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Brown Instrument Company records

Accession 1728

Manuscripts and Archives Department, Hagley Museum and Library


PO Box 3630
Wilmington, Delaware, 19807
302-658-2400
research@hagley.org

Finding aid prepared by Todd Cohn,

This finding aid was produced using the Archivists' Toolkit 2013-04-25T15:34-0400

Finding aid prepared using best local practices and Describing Archives: A Content Standard

Cite items for this collection in the following format:
[Description and dates], Box/folder number, Brown Instrument Company records (Accession 1728), Hagley Museum and Library, Wilmington, DE 19807

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Descriptive Summary

Title: Brown Instrument Company records
Dates: 1925-1960
Accession Number: 1728
Creator: Brown Instrument Company.
Extent: 54 linear feet
Language of Material: English
Repository: Hagley Museum and Library: Manuscripts and Archives Department
Abstract: The records of the Brown Instrument Company consist of research files documenting the development of measuring instruments and industrial control systems used in continuous process manufacturing.
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Administrative Information


Use Restrictions

These records are housed in remote storage. Please allow at least 24 hours for delivery.

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Historical Note

In the late 1850's, an English engineer, Edward Brown, immigrated to Philadelphia, bringing with him his knowledge of kilns, foundries, and the high temperatures involved in both. Edward Brown invented the first pyrometer (carbon-rod pyrometer) in 1869, based on differential expansion of iron and graphite rods. Until that time there had been no accurate way to measure the high temperatures in kilns and foundries. The pyrometer made it possible to measure these high temperatures that ordinary thermometers could not measure. This was important because it made it possible to set accurately the optimal temperatures for forging quality iron and steel, thereby reducing the amount of flawed iron and steel produced.

The business that would evolve into the Brown Instrument Company began in the mid-nineteenth century. According to the Philadelphia Directory, Edward Brown was listed as an engineer and patent agent in 1867. In 1873, he was listed as a solicitor of patents and his business was established in 1860. His 1880 listing had him with the United States & Foreign Patent Office, along with an advertisement that he sold pyrometers, scotch glass tubes, and steam gauges. By 1889, Edward Brown was no longer listed as a patent agent, and was advertising his instruments exclusively.

Edward Brown's son, Richard, took over the business after his father's death in 1905. The Philadelphia Directory for 1906 lists the business as Edward Brown & Son. Perhaps Richard kept his father's name for recognition. The Brown Instrument Company was established on April 19, 1910, with Richard Brown as president (for one year, 1918, the company was listed as Brown Instrument Co. & Keystone Electrical Instrument Co., but by 1919 it was listed again as only Brown Instrument Company). The purpose of the company was to manufacture electrical measuring instruments. The company became one of America's largest producers of industrial thermometers and thermostats, providing large steel companies with the means of regulating the high temperatures of their blast furnaces. By 1934, the company held a large number of instrument patents, was a producer of about five-hundred instrument products, employed five-hundred workers, and brought in annual revenues of about two million dollars. The company's success as a worldwide leader in industrial controls and indicators made it an attractive possible acquisition for other companies.

William Huff, treasurer of Minneapolis-Honeywell Regulator Company, happened by chance to be seated next to Richard Brown on a train to New York after a National Recovery Act meeting in Washington DC During the course of casual conversation they began to discuss the similarities between their respective companies. Brown was the maker of the best recording, indicating, and controlling instruments but did not make the valves and accessories needed for complete instrumentation. Minneapolis-Honeywell did make these valves and accessories. Brown and Huff realized that their companies were a natural fit and soon after entered into negotiations. In 1934 Minneapolis-Honeywell bought Brown Instrument's assets for $2.3 million, becoming one of several acquisitions Minneapolis-Honeywell made in the area of industrial process controls.

Minneapolis-Honeywell was also interested in Brown Instrument Company because they provided another opportunity for expansion into the global market. In 1930 Minneapolis-Honeywell established a subsidiary in Toronto, Canada where, since 1915, small inroads had been made with distributors for Minneapolis Heat Regulator Company thermostats. In the same year that they bought Brown Instrument Company, Minneapolis-Honeywell had opened its first European subsidiary in Amsterdam, and in 1936 they established one in England as well. Brown Instrument Company gave Minneapolis-Honeywell an opportunity to enter the Pacific Rim.

Brown had a close relationship with Yamatake Corporation of Tokyo, Japan. This Japanese company was distributing Brown products by 1920, and after the merger with Minneapolis-Honeywell, the relationship was expanded to include that companies commercial and residential heating controls. Yamatake-Honeywell was a 50-50 venture, but was pared down to 20% for Honeywell by the 1990's, and both companies would continue to benefit from technical cooperation.

World War II disrupted this new global expansion. In the Netherlands, their employee numbers were reduced to five, three of which were in hiding and could not hold jobs. Communications with Yamatake were severed. The owner, Takehiko Yamaguchi, continued with production, keeping track of royalties owed to Honeywell. At the end of the War Yamaguchi sent his son to Honeywell to give an accounting of the business during the war years. With much of the factory destroyed, Yamatake would have trouble paying the debt. Honeywell helped them reorganize, rebuild, and establish a presence in the Orient. The post war rebuilding was a boom for Honeywell's international business as factories were built throughout Europe and Asia. In this time of industrial growth, technologies centered on industrial controls would become important.

After their merger with Minneapolis-Honeywell Regulator Company, Brown Instrument began to develop control systems capable of measuring and adjusting the temperature, pressure, and flow rates of various liquids and gases. These developments were particularly important to the oil and chemical industries. Just prior to World War II, Brown developed electromechanical devices, which contributed to the automation of factories.

After World War II, Brown began to experiment with remote control devices similar to those developed at M.I.T.'s Servomechanisms Laboratory. According to reports from M.I.T.'s Lincoln Laboratory, during the 1950s, Brown began to use modern concepts of control engineering originally developed through research on guided missiles. With the 1950's came the rise of computers, and Brown began to use analog computers to develop control systems more powerful than the previous electromechanical systems. These systems could perform all calculations automatically and aided continuous process industries, such as oil and chemical, by automatically controlling liquids and gasses as they flowed through pipes and membranes.

In the late 1940s and early 1950s, Brown Instrument Company worked closely with IBM, who was also promoting industrial automation through its Industrial Computation Seminar, to develop automated systems for companies such as Sun Oil, DuPont, and Texaco. By the mid-fifties, Brown was working with Procter and Gamble, Sun, Standard Oil, Seagram, General Electric, Shell, and the Atomic Energy Commission to install systems capable of supervising an entire factory by analog computer.

In a 1988 pamphlet, Honeywell asserted that the legacy of Brown Instrument lived on with the 1975 development of TDC 2000, a digital process management system incorporating microprocessors. In 1983, TDC 3000 integrated all aspects of plant function, linking process equipment, control subsystems, and computers to a high-speed communications network. In summary, Brown Instrument Company had a major impact on the development of modern industrial production. From invention of the pyrometer to the advent of sophisticated measurement and control systems, Brown Instrument was instrumental in the creation of modern industrial automation.

The Brown Instrument name survived until 1949, at which point it became Philadelphia Division. On many of the engineering reports in the collection, the company is referred to as the Brown Instrument Division. Later it became the Process Control Division of Honeywell, Inc., located in Fort Washington, Pennsylvania. (Honeywell, Inc. became the official name in 1963, replacing Minneapolis-Honeywell Regulator Company). Today it is the Industrial Automation & Control Division (IAC) located in Phoenix, Arizona.

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Scope and Content

The records of the Brown Instrument Company consist of research files documenting the development of measuring instruments and industrial control systems used in continuous process manufacturing. The files trace the evolution of electromechanic​al, hydraulic, and pneumatic devices produced by the Brown Company. Trade catalogs dating from 1910 show that Brown's earliest electric meters were designed to measure and control heat and gases used in continuous firing iron and steel furnaces. By the late 1930s Brown found new markets for these temperature control devices and began producing a millivoltmeter to regulate and control the temperatures under which industrial processes took place. The records show that after World War II Brown experimented with remote control devices similar to those which had been recently developed at M.I.T.'s Servomechanisms Laboratory.

The collection includes a number of laboratory reports from M.I.T's Lincoln Laboratory indicating that Brown, during the 1950s, applied modern concepts of control engineering originally developed in guided missile development research. By mid-decade the company was talking to Du Pont, Procter & Gamble, Sun, Standard Oil, Seagrams, General Electric, Shell Oil and the Atomic Energy Commission about installing centralized control panels that, through the use of analog computers, could supervise an entire factory. It appears that Brown concentrated on the continuous process industries (e.g., oil and chemicals) which dealt with products in liquid and gaseous forms that could be automatically controlled as they flowed through pipes and membranes. During the late 1940s and early 1950s the company worked closely with IBM which was promoting industrial automation through its Industrial Computation Seminar. The two firms cooperated to develop a number of automated systems at Sun Oil, Du Pont, and Texaco. Correspondence and internal memoranda show that both Brown's engineers and the companies with whom they worked saw automation as a way to reduce labor costs, insure quality, and increase management's control over the shop floor. The Brown records, consisting, for the most part, of engineering reports generated by the firm's various projects, describe the development and installation of Brown's automated control systems.

The files include many reports on control engineering written by members of the American Society of Mechanical Engineers and the Instrument Society of America, providing a window into the world view of the engineers who created the automated control systems of the late 1950s and early 1960s, as well as into the minds of the customers who bought these systems.

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Bibliography

Borger, Judith Yates. 1985. Honeywell, the first 100 years. Minneapolis, Minn: s.n.

The Philadelphia directory, 1862-1919

Control. 1988. Chicago, Ill: Putman Pub. Co.

Nash, Michael. 1989. Computers, automation, and cybernetics at the Hagley Museum and Library. Wilmington, Del: The Museum.

Spencer, Edson W. 1986. Honeywell: after 100 years. New York: Newcomen Society of the United States.

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Series Descriptions and Inventory

I. Control Systems, 1928-1959, bulk 1945-1955
9.25 linear feet
Scope and Content
This series contains research files pertaining to the development of various control systems and schemes. The records are of an engineering and technical nature, covering the electromechanical, hydraulic, and pneumatic systems developed by the company. Found here are interoffice correspondence, customer correspondence, articles, bulletins, studies, and various reports. This documentation provides information on the problem solving, engineering, and technical development that went into Brown's control systems and devices.
Arrangement
The series is arranged in four subseries. Each of the subseries is arranged in the order of a number assigned by the company (i.e., 346/16). Each also contains similar types of documents, most of which are Engineering Department Records.
A. Automatic Control Systems, 1932-1954
0.25 linear feet
Box
1 Final Control Element System - Data Calculation Formula, February 20, 1932 April 1954 undated
1 Final Control Element System - Data Linkage, June 14, 1939-March 10, 1944
1 Conditioning Instruments-Air, February 17, 1937-February 1952
1 Application Data, December 29, 1943-January 24, 1944
B. Generalized Control Schemes, 1930-1957
1.75 linear feet
Box
1 General and Miscellaneous, June 24, 1944-March 14, 1945
1 Bulletins, March 30, 1943
1 Electronic Control Systems, December 7, 1951-January 1956
1 Basic - General and Miscellaneous, April 21, 1933-March 26, 1953
1 Basic - Articles and Abstracts, October 1948-December 31, 1956
1 Basic - Articles and Abstracts, August 1943-June 1957
1 Basic - Bulletins, November 16, 1950-January 19, 1954
1 Basic - Multiple Element Control, December 7, 1945-October 19, 1951
1 Basic - Ratio Control, November 30, 1931-June 1953
1 Basic - Fuel Air Ratio, June 15, 1951-December 14, 1954
1 Basic - Fuel Air Diesel Engines, March 26, 1952-February 1955
1 Program and Time System Control - General, October 20, 1949-January 27, 1954
1 Program and Time System Control - Program or Full Time Cycle, 1931-1945
Box
2 Program and Time System Control - Program or Full Time Cycle, 1946-1949 1950-1951
2 Program and Time System Control - Cam Operated, June 8, 1933-August 29, 1952
2 Program and Time System Control - Competitive Schemes, June 17, 1940-September 11, 1953
2 Program and Time System Control - Analysis Control, December 10, 1947-July 7, 1950
2 Program and Time System Control - Supervisory Control, October 11, 1949-August 7, 1953
2 Program and Time System Control - Service Data, November 18, 1949-August 21, 1952
2 Program and Time System Control - Graphic Panel Quotes, August 3, 1937-September 19, 1952
2 Program and Time System Control - Graphic Panel Bulletin Data, June 2, 1950-January 31, 1952
2 Program and Time System Control - General Panels Manual, November 12, 1953
2 Supervisory Control - Development, 1942-1951
2 Supervisory Control - Colorgrafic Panel, February 2, 1950-December 1953
2 Supervisory Control - Batch Production, July 2, 1943-November 12, 1952
2 Supervisory Control - Batch Process Control, January 6, 1945-September 11, 1952
2 Supervisory Control - Basic Control From Either or Two Variables, January 24, 1940-January 13, 1953
2 Supervisory Control - Control From Multi Point Instrument Annealing Cover Control, May 29, 1941-October 31, 1955
2 Supervisory Control - Control From Multi Point Annealing Cover Control Tests, February 6, 1942
2 Supervisory Control - Control Of Annealing, February 28, 1951-March 15, 1955
2 Supervisory Control - Control From Multi Point Instrument Pot Furnace Interlock Control, April 25, 1930-December 8, 1944
2 Supervisory Control - Warning Systems, June 29-July 6, 1948
2 Supervisory Control - Control From Multi Instruments, March 21, 1940-December 4, 1947
2 Supervisory Control - Saturable Reactor Control, September 30, 1953-January 4, 1957
Box
3 Supervisory Control - Furnace Control, March 30, 1951
3 Supervisory Control - Industrial Heating Control, 1944-1957
C. Process Control Systems, 1928-1958
2.75 linear feet
Box
3 Article and Abstracts, November 17, 1953-September 1958
3 General - Folder 1, February 1954-November 14, 1955
3 General - Folder 2, August 12, 1955-February 13, 1958
3 Measured Variables - General and Miscellaneous, October 9, 1934-1953
3 Measured Variables - Article and Abstracts, February 1943-July 1955
3 Measured Variables - Squeeze Roll Loading System, July 24, 1950-May 23, 1951
3 Measured Variables - Bulletins, November 15, 1950-February 8, 1954
3 Flow Control System - Ratio Control Flow Systems, July 8, 1932-August 25, 1953
3 Flow Control System - Folder 1, January 2, 1930-September 27, 1954
3 Flow Control System - Folder 2, May 21, 1931-October 29, 1956
3 Moisture Control Systems - General, December 19, 1936-December 4, 1953
3 Moisture Control Systems - Installation Diagram, October 26, 1938-December 18, 1939
3 Moisture Control Systems - Wiring Diagrams, January 11, 1939-December 23, 1943
3 Moisture Control Systems - Instructions, September 9, 1938-October 4, 1945
Box
4 Cotton Slasher, January 6, 1937-September 27, 1945
4 Cotton Slasher, May 25, 1949-July 19, 1951
4 Paper Machine Control - General, December 5, 1939-January 12, 1956
4 Paper Machine Control - Rayon Slasher Control, January 4, 1940-September 29, 1949
4 Paper Machine Control - Liquid Level Control, March 19, 1928-September 1958
4 Paper Machine Control - Size Box Level Control, December 21, 1938-October 19, 1951
4 Paper Machine Control - Size Box Electrodes, June 26, 1939-January 11, 1952
4 Paper Machine Control - Temperature Control, February 5, 1943-December 1956
4 Size Cooking Control - Size Box Temperature Control (Textile Mills), 1938-1946
4 Size Cooking Control - Cylinder Temperature Control, 1945-1948
4 Size Cooking Control - Cylinder Development, February 19, 1942-September 3, 1945
4 Size Cooking Control - Pressure Control, 1940-1954
4 Size Cooking Control - Furnace Pressure Control, 1939-1946
4 Size Cooking Control - Speed Control, July 31, 1951-December 10, 1952
4 Size Cooking Control - Differential Pressure Control, April 4, 1946-May 14, 1953
4 Size Cooking Control - Density Control, January 3, 1945-October 24, 1952
Box
5 Size Cooking Control - Exothermic Reaction Control Systems, June 29, 1948-January 8, 1952
5 Size Cooking Control - Weight Control Systems, September 9, 1946-July 1952
5 Size Cooking Control - Drying Control, August 1951
5 Size Cooking Control - Mixed Displacement Type Liquid Level, July 19, 1938-July 8, 1949
5 Flame Failure - Flame Failure Control Systems, November 11, 1941-December 19, 1950
5 Flame Failure - Determination Of Means To Safeguard Aircraft From Power Plant Fires, October 1943-April 1944
5 Flame Failure - Bulletins, 1937-1938
5 Flame Failure - Flame Resistance Data, January 22, 1942-April 28, 1944
5 Flame Failure - Sales Analysis and Data, December 14, 1939-March 28, 1949
5 Flame Failure, Application Data - General, May 23, 1944-November 8, 1951
5 Flame Failure, Application Data - Fractional Column Control, December 11, 1943-April 1955
5 Flame Failure, Application Data - Oil Heater Control, May 17, 1946-January 12, 1951
5 Flame Failure, Application Data - Absorber Tower Control, January 15-April 17, 1951
5 Flame Failure, Application Data - Electronic Furnace Control, June 28, 1944-December 18, 1953
5 Flame Failure, Application Data - Catalytic Cracker Control, October 13-December 8, 1947
5 Flame Failure, Application Data - Heat Exchanger Control, October 15, 1946-January 31, 1950
5 Flame Failure, Application Data - Combustion Control, January 27, 1930-November 1, 1934 October 13, 1937-December 10, 1953
5 Flame Failure, Application Data - Bethlehem Steel, Sparrows Point, 1934-1940
5 Flame Failure, Application Data - Byrne Combustion Control, May 20, 1935-February 16, 1942
5 Flame Failure, Application Data - Combustion Control Boiler, May 16, 1938-December 22, 1953
5 Turbine Control - Correspondence/ASME, February 14, 1929-October 10, 1956 [items OS-1]
5 Turbine Control - Motion Control, July 7, 1936-August 16, 1944
D. Control Devices, 1929-1959
4.5 linear feet
Box
5 Time Cycle Controllers Controller Schemes, November 2, 1942-April 19, 1946
5 Hydraulic Controllers & Parts, April 1953-June 23, 1954
5 Pneumatic - General and Miscellaneous, April 1, 1942-December 1955
5 Pneumatic - Pneumatic Theory, March 13, 1942-August 1948
5 Pneumatic - Competitive Analysis, December 19, 1934-November 3, 1944
5 Pneumatic - Bulletins, April 17, 1950-June 11, 1951
5 Pneumatic - Pneumatic Controller Schemes, February 14, 1940-June 24, 1953
5 Pneumatic - Oscillation Of Air, July 27, 1942-September 11, 1945
5 Pneumatic - History of Air Control, 1929-1930
Box
6 Pneumatic - History of Air Control, 1934-1946
6 Pneumatic - Wright Aeronautical Corp. Circular Case Control, September 29, 1939-September 19, 1951
6 Pneumatic - Rectangular Case, June 2, 1938-July 19, 1951
6 Pneumatic - Dual Interlock Controller, December 9, 1942-September 18, 1944 [items OS-1]
6 Pneumatic - Three Pen Recorders, February 1, 1940-July 5, 1946
6 Pneumatic - Dual Controller, June 24, 1940-December 27, 1948 [items OS-1]
Pneumatic - Small Rectangular Case Controller, February 15-June 19, 1950
Box
6 Pneumatic - Sales Data, April 25, 1938-January 18, 1957
6 Pneumatic Controllers & Parts - Pilot Valve, Components, Bulletins, October 11, 1935-November 23, 1955
6 Pneumatic Controllers & Parts - Pilot Valve, January 12, 1942-September 13, 1955 [items OS-1]
6 Pneumatic Controllers & Parts - Pilot Valve Non-Bleed Time, August 25, 1938-August 11, 1952
6 Pneumatic Controllers & Parts - Pilot Valve Non-Bleed Type Test Data, July 22, 1943-March 25, 1946
6 Pneumatic Controllers & Parts - Pilot Valve Redesign, June 2, 1949-July 15, 1958
6 Pneumatic Controllers & Parts - Pilot Valve Non-Bleed Product Quality Tests, April 10, 1952-June 30, 1953
6 Pneumatic Controllers & Parts - Null Balance Pilot Valve, April 11, 1946-September 28, 1949
6 Pilot Valves Non-Bleed Miniature - Development, January 30, 1952-February 20, 1956
6 Pilot Valves Non-Bleed Miniature - Testing, May 20, 1952-March 19, 1954 [items OS-2]
6 Pilot Valves Non-Bleed Miniature - Manufacturing, July 29, 1953-January 21, 1956
6 Pilot Valves Non-Bleed Miniature - Cost & Sales Data, March 3, 1952-December 6, 1955
6 Pilot Valves Non-Bleed Miniature - Pilot Valve Bleed Type, July 27, 1948
6 Pilot Valves Non-Bleed Miniature - Remote Cut-Off Valve, January 17, 1949-February 29, 1952
6 Pilot Valves Non-Bleed Miniature - Switching Valves, July 2, 1936-May 10, 1950
6 Pilot Valves Non-Bleed Miniature - Feedback Relay For Remotset Controller, August 10, 1949-December 26, 1950 [items OS-3]
6 Pilot Valves Non-Bleed Miniature - Pressure Balance Relay, August 17, 1949-February 27, 1951 [items OS-1]
6 Pilot Valves Non-Bleed Miniature - Air Control Nozzle, June 29, 1938-May 26, 1950
6 Pilot Valves Non-Bleed Miniature - Needle Valves, Tell-O-Set Controller, February 28, 1952-July 1, 1953
Box
7 Pilot Valves Non-Bleed Miniature - Reset Valve, September 24, 1940-November 15, 1955
7 Pilot Valves Non-Bleed Miniature - Reset Fluids, September 28, 1942-March 31, 1949 [items OS-3]
7 Pilot Valves Non-Bleed Miniature - Air Control Bellows Data, December 17, 1934-January 1955
7 Pilot Valves Non-Bleed Miniature - Diaphragms, September 13, 1949-February 23, 1954
7 Pilot Valves Non-Bleed Miniature - Index Setter, February 3, 1936-November 14, 1951
7 Pilot Valves Non-Bleed Miniature - Adjustable Restriction, General, June 22, 1950-April 23, 1957
7 Pilot Valves Non-Bleed Miniature - Air Control Gauges, February 2, 1937-December 26, 1950 [items OS-1]
7 Pneumatic Controllers, On-Off - General & Miscellaneous, July 5, 1938-April 17, 1953
7 Pneumatic Controllers, On-Off - Controller Schemes, June 27, 1944-November 13, 1953
7 Pneumatic Controllers, Proportional - General & Miscellaneous, July 20, 1937-February 29, 1952 [items OS-1]
7 Pneumatic Controllers, Proportional - Controller Schemes, June 27, 1944-August 16, 1954
7 Pneumatic Controllers, Proportional - Limited Throttling, December 7, 1936-February 12, 1947
7 Pneumatic Controllers, Proportional - Full Throttling, December 21, 1937-March 6, 1957
7 Pneumatic Controllers, Proportional - Non-Indicating Pressure Controller, 1950
7 Pneumatic Controllers, Proportional Plus Reset - General & Miscellaneous, March 28, 1944-February 23, 1954
7 Pneumatic Controllers, Proportional Plus Reset - Controller Schemes, November 22, 1943-October 8, 1954
7 Pneumatic Controllers, Proportional Plus Reset - Bulletins, June 7, 1950-December 8, 1954
7 Pneumatic Controllers, Proportional Plus Reset - Field Test Of Air Control, May 24, 1938-May 18, 1945
7 Air-O-Line - Controllers, February 21, 1935-October 2, 1952
7 Air-O-Line - Reset Shut-Off, March 15-November 24, 1948
7 Air-O-Line - History, 1935-1939
7 Air-O-Line - 3-27 PSIS Output Range, March 26-August 31, 1951
7 Air-O-Line - Dual Air Controller, August 23, 1935-March 18, 1942
7 Air-O-Line - Duplex Air Controller (Circular Case), March 31, 1936-June 20, 1946
7 Air-O-Line - Air-O-Line Controller With Adjustable Neutral, April 24, 1942-January 20, 1948
Box
8 Air-O-Line - Hygrometer Air Control (Circular Case), April 9, 1936-June 28, 1944
8 Air-O-Line - Pressure Gauge Air Control (Circular Case), June 18, 1937-November 12, 1948
8 Air-O-Line - Simplified Controller, January 24, 1946-April 9, 1947
8 Air-O-Line - Non-Indicating Controller Graphic Panel, October 24, 1949-June 27, 1952
8 Air-O-Line - Indicating Controller Compact (C.I.C.), March 23, 1949-March 3, 1952
8 Tel-O-Set - General, July 18, 1950-March 21, 1956
8 Tel-O-Set - Shell Development Co., October 8, 1957-November 17, 1959
8 Tel-O-Set - Manifolding, December 21, 1950-February 6, 1953 [items OS-1]
8 Tel-O-Set - Calibration Data, April 26, 1951-February 24, 1954
8 Tel-O-Set - Design-General, October 10, 1951-September 1955 [items OS-1]
8 Tel-O-Set - Design-Fast Reset, December 29, 1948-February 23, 1954 June 22, 1950-February 24, 1954 [items OS-1]
8 Tel-O-Set - Design Of Single Pilot, Dual Controller, July 26, 1951-February 24, 1954 [items OS-1]
8 Tel-O-Set - Design-Slow Reset, February 8, 1951-January 4, 1954
8 Tel-O-Set - Service Manual, October 25, 1951-July 30, 1953
8 Teloset Rate Action - Development, January 11, 1951-August 2, 1954
8 Teloset Rate Action - Field Tests, April 22, 1952-January 1955
8 Teloset Rate Action - Speed Floating Controller, October 14, 1949-June 7, 1950
8 Teloset Rate Action - Air-O-Line Controller Strip Chart Potentiometer, March 10-December 19, 1950
8 Teloset Rate Action - Service Analysis, May 13, 1943-October 13, 1949
8 Pneumatic Controllers, Rate Action - General & Miscellaneous, October 11, 1937-April 2, 1952
8 Pneumatic Controllers, Rate Action - Rate Action Schemes, November 23, 1943-September 1, 1953
Box
9 Pneumatic Controllers, Rate Action - Bulletin, March 23, 1943-February 23, 1954
9 Pneumatic Controllers, Rate Action - Dennis Rate Action Schemes, May 8, 1936-October 6, 1938
9 Pneumatic Controllers, Rate Action - Air-O-Line Controller With Rate, October 6, 1938-February 14, 1952
9 Rate Action Unit - Reports Only, May 8, 1940-May 9, 1951
9 Rate Action Unit - 89-S-54, May 20-August 19, 1946
9 Rate Action Unit - Tendalizer, September 11, 1934-September 19, 1935
9 Rate Action Unit - Impulse Unit, January 4, 1934-June 24, 1935
9 Rate Action Unit - Rate Relay, September 29, 1939-August 3, 1944
9 Rate Action Unit - 65-5-03, September 22, 1939-May 26, 1944
9 Pneumatic Telemetering Devices - General & Miscellaneous, April 16, 1943-June 30, 1949
9 Pneumatic Telemetering Devices - Pneumatic Telemetering Schemes, April 10, 1943-November 8, 1948
9 Pneumatic Telemetering Devices - Newmatic Time Pattern Transmitter Type, November 21, 1940-March 4, 1949 [items OS-1]
9 Pneumatic Telemetering Devices - Newmatic Time Pattern Development, June 11, 1937-December 22, 1947
9 Pneumatic Control Accessory Devices - Bulletins Air Filter (Dripwell), August 24, 1942-February 17, 1949
9 Pneumatic Control Accessory Devices - Filters, July 31, 1935-February 16, 1955
9 Pneumatic Control Accessory Devices - Heavy Duty, May 27, 1940-February 16, 1942
9 Pneumatic Accessories - General & Miscellaneous, November 9, 1942-September 20, 1954
9 Pneumatic Accessories - Articles & Abstracts, February 16, 1954
9 Pneumatic Accessories - Bulletins, July 23, 1951-May 19, 1952
9 Pneumatic Accessories - Manual By-Pass, January 23, 1947-August 26, 1949
9 Manual By-Pass - General, October 8, 1936-January 5, 1948 [items OS-1]
9 Manual By-Pass - Early Development, March 19, 1937-April 14, 1948
9 Manual By-Pass - #77269, April 30, 1938-September 6, 1945
9 Manual By-Pass - #77269 Improved Type, June 24, 1942-November 13, 1947
9 Manual By-Pass - #350088, November 23, 1948-November 26, 1943 [items OS-1]
9 Manual By-Pass - 17 X 45, November 26, 1943-May 4, 1948 [items OS-1]
9 Manual By-Pass - Integral, December 12, 1946-February 3, 1950 [items OS-1]
Box
10 Manual By-Pass - Development, January 14, 1947-July 2, 1948
10 Manual By-Pass - Development Reports, February 7, 1947-March 21, 1949
10 Manual By-Pass - Transfer Valve, June 11, 1948-February 28, 1951
10 Manual By-Pass - Redesign of Knob #352305, August 4, 1949-February 28, 1951
II. Measuring Systems, 1907-1973, bulk 1930-1957
35 linear feet
Scope and Content
Contains research files. The subject of this series' records is on the development of Brown's measuring systems, covering a wide variety of technical and engineering aspects.
Arranged in fifty-two subseries. Each of the subseries is arranged and divided by the order of a number assigned by the company (i.e., 346/16). For this reason, the subseries Photoelectric Pyrometry appears twice due to the fact that each set of records is marked with different file numbers. Each subseries also contains similar types of documents, most of which are Engineering Department Records. Found here are interoffice correspondence, customer correspondence, articles, bulletins, studies, and various reports. This documentation provides information on the problem solving, engineering, and technical development that went into Brown's measuring systems.
A. Instrument Theory, 1944-1956)
Box
10 General (100/00), February 2, 1955-December 28, 1956
10 Articles - General (100/05), August 1944-December 1956
10 Force Balance - General (100/10), March 2, 1950-May 8, 1956
10 Force Balance - Intrinsic Safety (100/20), July 5, 1946-February 6, 1956
B. Block Diagram Analysis, 1951-1953)
Box
10 Patent Department (103/02), February 19, 1953
10 Articles - General (103/05), April 1951-April 1953
10 Articles - A.S.M.E. (103/051), July 18, 1951-August 5, 1952
10 Building Block Instrumentation - General (103/10), April 5, 1951 July 21, 1952
10 Building Block Instrumentation - Electric (103/101), April 5, 1951-March 20, 1952
10 Building Block Instrumentation - Pneumatic (103/102), April 5, 1951-March 20, 1952
C. Telemetering Systems, 1933-1964
Box
10 General - General (104/00)
10 Patent Department - General (104/02)
10 Articles - General (104/05), December 1947-November 1964
10 Bulletins - General (104/07), October 24, 1950-May 1, 1957
10 Voltage Type - General (104/10), September 1, 1938-April 23, 1953
10 Current Type - General (104/20), December 15, 1947-April 7, 1952
10 Frequency & Pulse Rate Type - General (104/30), May 4, 1950-October 29, 1954
10 Frequency & Pulse Rate Type - Variable discriminator (104/301), December 30, 1942-February 11, 1949
10 Pulse Duration Type - General (104/31), May 1951-January 21, 1957
10 Pulse Duration Type - Development (104/311), August 18, 1947-July 3, 1952
10 Pulse Count Type - General (104/32), December 1934-November 10, 1952
Box
11 Pulse Code Type - General (104/33), November 27, 1953-February 24, 1954
11 Ratio Type - General (104/40), March 7, 1933-December 13, 1950
11 Ratio Type - Inductance Bridge (104/401), March 19, 1934-December 2, 1951
11 Ratio Type - Cathode Ray (104/402), June 1, 1943-September 15, 1944
11 Channel Equipment - General (104/50), March 6, 1945-July 13, 1955
11 Pneumatic Type - General (104/60), October 23, 1935-January 1959
11 Hydraulic Type - General (104/70), March 2, 1942-March 22, 1943
D. Type K Thermocouple, 1965
Box
11 Embrittlement (117/30), January 26-May 17, 1965
E. Photoelectric Pyrometry, 1931-1956
Box
11 Steel Bath Pyrometer - General (119/60), February 12, 1947-September 28, 1951
11 Steel Bath Pyrometer - Calibration Unit (119/61), February 12, 1947-April 4, 1949
F. Product Quality Measurement, 1950-1963
Box
11 General (120/00), June 20, 1950-March 1958
11 Articles - General (120/05), February 1950-December 1956
11 Chromatography - General (120/10), August 10, 1951-June 24, 1963
11 Chromatography - Gas (120/11), July 15, 1955-March 1958
G. Density & Specific Gravity Measurement, 1950-1963
Box
11 General (121/00), June 20, 1946-September 4, 1956
11 Patents (121/02), May 5-June 29, 1955
11 Articles (121/05), October 3, 1946-May 1956
11 Gases (121/10), December 1933-June 15, 1954
11 Liquids (121/20), March 1, 1928-September 23, 1955
11 Liquids-Instrumentation (121/201), January 17, 1947-February 7, 1957
11 Transmitters, Displacement - General (121/21), May 28, 1947-December 8, 1953
11 Transmitters, Displacement - Food Industry (121/211), April 12-May 16, 1952
11 Transmitters, Electric - General (121/25), May 24, 1955-July 12, 1956
11 Transmitters, Electric - Applications (121/26), December 13, 1955-August 22, 1956
H. Electro-Chemical Measurement, 1934-1958
Box
11 General (122/00), December 18, 1945-April 2, 1954
11 Articles- General (122/05), September 24, 1951-March 1958
11 Electrical Conductivity - General (122/10), February 6, 1934-April 18, 1955
11 Electrical Conductivity - Electrical Conductivity Investigation (122/101) (1 of 2), April 1939-June 24, 1954
Box
12 Electrical Conductivity - Electrical Conductivity Investigation (122/101) (2 of 2), April 1939-June 24, 1954
12 Oxidation-Reduction Potential - General (122/20), December 28, 1950-February 6, 1956
12 PH Measurement - General (122/30), October 21, 1930-November 21, 1956
12 PH Measurement - Special Systems (122/301), July 5, 1939-December 13, 1956
12 PH Measurement - Beckman (122/3011), May 11, 1942-March 1955
12 PH Measurement - Macbeth (122/3012), February 18, 1946-May 4, 1951
12 PH Measurement - Burrell (Coleman) (122/3013), January 10, 1938-October 31, 1947
12 PH Measurement - Cambridge (122/3014), May 26, 1948-November 16, 1955
12 PH Measurement - Applications (122/309), December 7, 1933-November 16, 1956
12 Pologrophy - General (122/40), February 20, 1940-December 9, 1954
12 Dielectric Constant - General (122/50), October 1949-December 18, 1958
12 Titration - General (122/60), December 1948-July 1953
I. Optical Measurement, 1929-1957
Box
12 General (123/00), November 16, 1932-January 23, 1957
12 Articles (123/05), November 18, 1929-May 3, 1954
12 Desitometers (123/10), September 20, 1949-May 23, 1957
12 Colorimetry (123/20), May 15, 1930-January 7, 1958
12 Polarimeters (123/30), April 8, 1949-September 17, 1954
12 Turbidity Meters (123/40), April 4, 1931-July 2, 1956
12 Refractometers (123/50), May 28, 1947-October 1956
12 Photometry - General (123/60), September 1931-November 17, 1954
12 Smoke Density Meters - General (123/70), December 2, 1930-Febraury 20, 1948
Box
13 Smoke Density Meters - Design (123/701), March 21, 1931-June 17, 1933
J. Viscosity Measurement, 1917-1958
Box
13 General (124/00), September 2, 1936-June 1, 1956
13 Articles (124/05), March 19, 1917-July 1958
13 Special Systems (124/10), April 15, 1936-September 9, 1952
13 Bendix Aviation Corp. (124/101), October 23, 1951-September 11, 1953
13 Brookfield Engineering Co. (124/102), September 24, 1948-February 10, 1954
13 Dobbie-McInnes, Ltd. (Poise-Meter) (124/103), July 20, 1949-May 23, 1951
13 Fischer & Porter Co. (124/104), December 1, 1947-July 6, 1953
13 Scott Testers, Inc. (Mooney Viscometer) (124/105), October 14, 1946-March 21, 1951
13 Norcross Corporation (124/106), November 17, 1944-May 21, 1953
K. Spectroscopy, 1941-1958
Box
13 General (125/00), September 11, 1942-October 4, 1955 [items OS-1]
13 Articles (125/05), November 17, 1943-October 1953
13 Petroleum Industry (125/051), January 22, 1942-November 1953
13 Diffraction (125/10), May 12, 1944-April 1955
13 Emission (125/20), March 1946-August 2, 1962
13 X-Ray (125/30), May 17, 1946-January 1957
13 Class 15 Receivers (125/311), October 5, 1945-March 5, 1953
Box
14 Infrared - General (125/40), March 1941-January 7, 1958
14 Infrared - Spectrometers (125/401), June 1941-January 1957
14 Infrared - Analyzers (125/402), July 30, 1948-June 10, 1958 [items OS-4]
14 Infrared - Accessory Instrumentation (125/41), November 18, 1954
14 Infrared - Class 15 Receivers (125/411), May 18, 1943-March 27, 1953 [items OS-4]
14 Infrared - Ultraviolet (125/50), August 16, 1943-June 11, 1953
14 Infrared - Accessory Instrumentation (125/51), January 25, 1951-January 29, 1954
14 Infrared - Class 15 Receivers (125/511), March 23, 1943-March 19, 1957
14 Infrared - Visible Light (125/60), October 1946-February 10, 1953
14 Infrared - Mass (125/70), May 13, 1942-April 1958 [items OS-4]
14 Infrared - Accessory Instrumentation (125/71), March 22, 1951-February 26, 1953
14 Infrared - Class 15 Receivers (125/711), June 24, 1943-June 5, 1953
Box
15 Infrared - Raman (125/80), May 12, 1944
15 Infrared - Class 15 Receivers (125/811), April 9, 1948
15 Infrared - Nuclear Resonance (125/90), March 1952-January 1958
L. Gas Analysis, 1915-1955
Box
15 General & Miscellaneous (126/00), April 4, 1933-September 13, 1955 [items OS-4]
15 Class 15 Receivers (126/0011), February 9, 1931-March 25, 1949
15 Articles (126/05), 1915-April 1957
15 Combustible Gas Analysis (126/10), April 22, 1937-September 4, 1953
15 Oxygen (126/11), June 7, 1938-March 14, 1955
15 Hydrogen (126/12), April 27, 1954-1955
15 Carbon Monoxide (126/13), 1922-1952
15 Paramagnetic Gas Analysis - Oxygen (126/21), March 27, 1944-March 14, 1955 [items OS-4]
15 Polarizing Cell Gas Analysis - Oxygen (126/31), June 14, 1940-September 29, 1953
15 Polarizing Cell Gas Analysis - Thermal Conductivity Gas Analysis (126/40), 1924-May 16, 1955
15 Analygraph - General (126/402), April 21, 1937-April 22, 1946 [items OS-4]
15 Analygraph - Field Development (126/4021), 1936-1939
Box
16 Analygraph - Application Data (126/4022), November 13, 1928-July 15, 1943
M. CO 2 Meter, 1924-1957
Box
16 General (126/403), July 12, 1927-July 9, 1951 [items OS-4]
16 Design (126/4031), 1930-February 9, 1944 [items OS-4]
16 Cells Design (126/40311), March 21, 1924-October 25, 1944
16 Parts (126/4032), October 19, 1926-February 9, 1944
16 Control Panels (126/40321), July 29, 1931-March 12, 1941
16 Adapters, A.C. (126/40322), April 28, 1932-May 9, 1940
16 Filters (126/40323), December 20, 1928-February 14, 1947
16 Aspirators, Fans, Pumps, and Blowers (126/40324), March 12, 1924-October 25, 1944 [items OS-4]
16 Condensers & Dryers (126/40325), November 30, 1928-December 9, 1946
16 Flow Gauges and Exit Seals (126/40326), February 12, 1932-December 2, 1941
16 Sampling Line, Sampling Tube, and Manifold (126/40327), November 12, 1926-January 14, 1942 [items OS-4]
16 Application Data (126/4033) (1 of 2), April 14, 1924-August 1, 1941
Box
17 Application Data (126/4033) (2 of 2), April 14, 1924-August 1, 1941
17 Thermal Conductivity Gas Analysis - Sulfur Dioxide (126/41), January 6, 1925-April 7, 1938 [items OS-3]
17 Thermal Conductivity Gas Analysis - Hydrogen (126/42), August 30, 1937-February 1, 1943
17 Oxygen Recorders - Sampling & Cleaning (126/501), August 11, 1948-October 15, 1954 [items OS-4]
17 Chromatography - General (126/70), September 23, 1955
17 Chromatography - Application Data (126/98), July 15, 1924-February 7, 1957
N. Flame Analysis, 1931-1943
Box
17 Bulletins - General (131/07), 1931
17 Flame Analyzer - General (131/20), April 21, 1943
17 Flame Analyzer - Design (131/202), February 9, 1931
17 Flame Analyzer - Testing (131/206), April 15, 1930-Janaury 28, 1931
17 Flame Analyzer - Applications (131/208), November 19, 1930-December 12, 1932
17 Flame Analyzer - Service (131/209), 1932-1933
O. Speed Measurement, 1926-1955
Box
17 Patent Department - General (132/02), May 21, 1935
17 Articles - General (132/05), June 1938-November 29, 1955
17 Bulletins - General (132/07), April 15, 1953
17 Tachometers - General (132/10), January 7, 1944
17 Tachometers - Design (132/102), December 19, 1939-April 16, 1951
17 Tachometers - Testing (132/106), January 11, 1926-March 22, 1950
17 Tachometers - Applications (132/108), February 3, 1938-May 2, 1955
17 Tachometers - Service (132/109), January 9, 1932-May 28, 1948
17 Generators - General (132/22), February 29, 1940-February 13, 1953
17 Drives - General (132/21), May 3, 1928-October 1, 1937
P. Thickness Gages, 1936-1958
Box
17 General (133/00), March 3, 1953-July 9, 1958
17 Articles (133/05), undated
17 Mechanical (133/10), October 15, 1936-August 2, 1950
17 Air Nozzle (133/20), January 1948-June 6, 1951
17 Radiation - General (133/50), January 11, 1956
17 Radiation - Beta Ray (133/501), December 20, 1948-April 30, 1954
17 Radiation - X-Ray (133/502), May 26-July 21, 1949
17 Radiation - Ultrasonic (133/60), July 1951
Q. Moisture Measurement, 1924-1959
Box
17 General (134/00), April 15, 1930-July 21, 1955
17 Articles (134/05), June 1933-December 17, 1956
17 Bulletins (134/07), January 6, 1937-August 15, 1953
17 Electric Resistance Type - Electric Hygrometers (134/101), February 1, 1930-October 18, 1957
17 Electronic Hygrometer Element - Electronic Hygrometer Sensing Elements (134/1011), April 8, 1946-January 7, 1957
Box
18 Electronic Hygrometer Element - M-H (134/10111), September 28, 1950-May 20, 1958
18 Electronic Hygrometer Element - Radiosonde (134/10112), October 11, 1937-February 21, 1946
18 Electronic Hygrometer Element - Electronic Hygrometers Circuit Design (134/1012), January 30, 1930-April 10, 1951
18 Electronic Hygrometer Element - Electronic Hygrometers Recorders Class 15 (134/1013), August 27, 1947-February 24, 1954 [items OS-3]
18 Electronic Hygrometer Element - Electronic Hygrometers Aspirator Boxes (134/1014), May 15, 1951-September 18, 1952
18 Wet-Dry Bulb Type - General (134/20), February 7, 1933-December 4, 1951
18 Wet-Dry Bulb Type - Psychrometers (134/201), April 17, 1924-February 13, 1952
18 Wet-Dry Bulb Type - Types-Sling (134/20111), December 4, 1931-May 3, 1945
18 Wet-Dry Bulb Type - Types-Spray (134/20112), October 12, 1936-March 23, 1944
18 Wet-Dry Bulb Type - Accessories (134/2012), September 17, 1924-October 12, 1955
18 Wet-Dry Bulb Type - Wicks (134/20121), December 15, 1926-September 6, 1951
18 Wet-Dry Bulb Type - M-H Assembly (134/20122), December 4, 1935-July 2, 1942
18 Wet-Dry Bulb Type - Fan Assembly (134/20123), January 30, 1929-March 3, 1954 [items OS-4]
18 Wet-Dry Bulb Type - Dew Point Measurement (134/30), December 19, 1945-February 1955
18 Wet-Dry Bulb Type - Dew Point Mirror Surface (134/31), October 1933-January 13, 1949
18 Wet-Dry Bulb Type - Dew Point Deaton Recorders (134/33), March 18, 1949-July 16, 1953
18 Wet-Dry Bulb Type - Tables (134/2013), July 1929-August 3, 1951
18 Mechanical Types - General (134/40), December 9, 1936-October 13, 1952
18 Mechanical Types - Hygrometers, Hair (134/401), May 6, 1932-February 17, 1950
18 Mechanical Types - Calibration & Tests (134/4012), October 31, 1933-December 23, 1948
18 Mechanical Types - Service (134/4013), September 7, 1945-June 3, 1949
18 Mechanical Types - Hygrometer, Animal Membrane Elements (134/4021), March 15, 1950-June 7, 1954
18 Mechanical Types - Gravimetric Types (134/50), October 12, 1934-September 6, 1940
18 Mechanical Types - Absorption Types (134/60), January 19-February 3, 1954
R. Moist-o-graph, 1936-1956
Box
18 General (135/00), February 28, 1936-November 9, 1954
18 Patent Data (135/04), August 3, 1938-March 3, 1953
18 Articles (135/05), June 10, 1942-September 1955
18 Bulletins (135/07), May 1937-December 14, 1950
18 Spec. Sheets (Q & A) (135/08), December 17, 1941-January 31, 1949
Box
19 Detector Elements - General (135/10), April 17, 1951-August 6, 1953
19 Detector Elements - Detector Rolls (135/101), February 10, 1941-January 19, 1956
19 Detector Elements - D. Rolls Redesign Paper (135/1011), October 25, 1949-November 13, 1952
19 Detector Elements - Power Unit Class 11 (135/20), November 28, 1938-September 29, 1953
19 Detector Elements - Triple Range Selector Switch Class 11 (135/201), April 22, 1946-September 28, 1953
19 Detector Elements - Cables (135/26), March 8, 1939-April 8, 1947
19 Switches - Multipoint (Detector Rolls) (135/28), June 5, 1939-March 11, 1942
19 Switches - Slasher (135/29), January 12, 1939-March 2, 1945
19 Switches - Transmitter Class 15 (135/30), August 3, 1949-August 16, 1955
19 Switches - Triple Range Selector Switch Class 15 (135/301), June 30, 1953
19 Switches - Multi-Range Selector Switch Class 15 (135/302), December 13, 1949-December 23, 1952
19 Switches - System Data Class 11 (135/60), January 9, 1939-January 16, 1946
19 Switches - System Data Class 15 (135/601), 1947-1950
19 Switches - Textile MOG General Development (135/61), January 21, 1938-June 12, 1950 [items OS-4]
19 Switches - Textiles General Development (135/611), January 12, 1948-February 3, 1956
19 Switches - Cotton MOG (135/62), March 25, 1938-December 9, 1955
19 Switches - Rayon MOG (135/64), February 1, 1939-November 28, 1951
19 Switches - Wool MOG (135/65), October 20, 1939-August 31, 1954
19 Switches - Paper MOG (135/66), January 8, 1936-February 29, 1956
19 Switches - Development (135/661) (1 of 3), 1936-1940
Box
20 Switches - Development (135/661), 1936-1940
20 Switches - Development (135/662), 1947-1950
20 Switches - Instrument Modification (135/70), December 8, 1937-December 20, 1946 [(135/702) 1939-1942; (135/703) 1943-1947; (135/704) 1947-1950]
20 Switches - Instructions (135/80), May 11, 1950-January 29, 1953
20 Switches - Wiring Diagrams (135/81), August 25, 1938, June 22, 1954
20 Switches - Sales Data (135/90), August 24, 1937-December 20, 1956
20 Switches - Service Data (135/96), March 4, 1938-September 21, 1953
20 Switches - Paper (135/961), August 22, 1944-April 1955
20 Switches - Application Data (135/98), March 13, 1939-February 10, 1956
20 Switches - Field Test of Paper MOG at N. Y. State School (135/981), May 31, 1939-March 14, 1945
20 Switches - Field Test of Paper MOG at Carthage Paper Makers (135/982), June 9, 1939-February 29, 1945 [items OS-4]
20 Switches - Field Test of Wool MOG at J. Hunter & Sons (135/983), August 4, 1939-March 29, 1945
20 Switches - Field Test of Paper MOG at Container Corp. (135/984), December 30, 1936-February 17, 1942
20 Switches - Paper Coating Machine (135/985), December 18, 1946-June 26, 1952
20 Paper - Paper Miscellaneous (135/9850), February 20, 1946-September 22, 1955
Box
21 Paper - Board Paper (135/9851), August 28, 1946-June 11, 1953
21 Paper - Book Paper (135/9852), September 19, 1946-September 26, 1955
21 Paper - Newsprint (135/9853), June 8, 1948-October 12, 1954
21 Paper - Tissue Paper (135/9854), October 3, 1946-September 12, 1947
21 Paper - Wrapping Paper (135/9855), May 18, 1948
S. Temperature Measurement, 1918-1959
Box
21 General (140/00), July 5, 1945-March 8, 1954
21 Patent Department (140/02), January 31, 1950-August 20, 1954
21 Articles (140/05), December 1929-July 10, 1959
21 Bulletins (140/07), March 11, 1943-April 8, 1952
21 Low - General (140/10), April 2, 1943-February 10, 1954
21 Low - Articles (140/101), February 2, 1950
21 Calorimetry - Articles (140/201), December 1918-December 1955
21 Calorimetry - General (140/20), March 6, 1939-July 20, 1956
T. Resistance Thermometers, 1907-1966
Box
21 General (141/00), September 22, 1942-June 27, 1963
21 Patent Department (141/02), February 4, 1924-February 8, 1955
21 Articles (141/05), May 23, 1907-May 28, 1954
21 Bulletins (141/07), February 2, 1938-November 17, 1954
21 Bulb Elements - General (141/10), October 19, 1939-April 29, 1955
21 Bulb Elements - Copper (141/101), November 7, 1925-August 29, 1947
21 Bulb Elements - Nickel (141/102), July 23, 1935-May 6, 1955
21 Bulb Elements - Commercial (141/1021), December 31, 1945-November 25, 1946
21 Bulb Elements - High Speed (141/1022), March 17, 1947-November 27, 1961
21 Bulb Elements - High Temperature (141/1023), May 18, 1950-January 17, 1962
21 Bulb Elements - Sub Zero Temperature (141/1024) (1 of 2), May 26, 1949-April 23, 1952
Box
22 Bulb Elements - Sub Zero Temperature (141/1024), May 26, 1949-April 23, 1952
22 Bulb Elements - Resistance Tests (141/1025), June 12, 1931-May 28, 1954
22 Bulb Elements - Platinum (141/103), December 15, 1931-October 1966
22 Bulb Elements - Obsolete (141/104), November 20, 1931-June 22, 1932
22 Bulb Assemblies - General (141/20), July 17, 1936-September 26, 1955
22 Bulb Assemblies - A. E. C. (141/201), June 26, 1953-October 14, 1954
22 Bulb Assemblies - Dairy Type (141/202), July 7, 1931-September 19, 1952
22 Bulb Assemblies - Industrial (141/203), November 3, 1937-April 13, 1959
22 Bulb Assemblies - Navy (141/204), September 23, 1936-April 17, 1952
22 Bulb Assemblies - Room Temperature (141/205), May 8, 1936-June 9, 1949
22 Bulb Assemblies - Air Craft (141/206), October 14, 1937-September 22, 1942
22 Bulb Assemblies - Body Temperature (141/207), October 27, 1932-March 29, 1949
22 Bulb Assemblies - Weather Bureau (141/208), November 29, 1939
22 Bulb Assemblies - Special-Miscellaneous (141/209), April 7, 1936-April 11, 1950
22 Bulb Assemblies - Speed of Response (141/30), February 29, 1952-February 19, 1962
22 Bulb Assemblies - Testing Apparatus (141/40), July 23, 1948-September 13, 1949
22 Bulb Assemblies - Calibrations (141/50), May 3, 1929-August 1, 1963
22 Deflection Bridge Circuit - General (141/60), August 5, 1937-February 4, 1958
22 Deflection Bridge Circuit - Navy Type (141/601), September 10, 1937-November 3, 1944 [items OS-4]
22 Deflection Bridge Circuit - Model 9001, 9003, 9090 (141/602), April 8, 1935-August 1, 1939
22 Balanced Wheatstone Bridge - General (141/61), April 10, 1942-February 4, 1958
22 Balanced Wheatstone Bridge - A. C. Bridge (141/611), September 17, 1942-March 12, 1947
22 Balanced Wheatstone Bridge - A. C. Rectified Bridge (141/612), March 9, 1949-July 31, 1951
22 Balanced Wheatstone Bridge - D. C. Bridge (141/613), February 11, 1924-February 1, 1929
22 Balanced Wheatstone Bridge - Circuit Theory (141/6131), January 24, 1928-March 3, 1942
22 Balanced Wheatstone Bridge - Model 9100,9109 (141/6133), January 15, 1926-December 1, 1938
22 Balanced Wheatstone Bridge - Instrument Modification (141/70), March 29, 1932-November 9, 1953
22 Instrument Components - Galvanometers (141/801), June 12, 1929-August 9, 1940
22 Instrument Components - Power Supplies (141/802), October 16, 1933-March 3, 1949
22 Instrument Components - Rectifiers (141/803), March 9, 1933-October 11, 1944
22 Instrument Components - Slide Wires (141/804), September 12, 1933-February 23, 1943
22 Instrument Components - Standardizing Panels (141/805), July 19, 1928-June 26, 1942
22 Instrument Components - Switches (141/806), January 5, 1934-March 24, 1952
22 Instrument Components - Sales & Service (141/95), March 8, 1937-February 4, 1958
22 Instrument Components - Manufacturing & Cost Data (141/96), March 13, 1951-February 12, 1957
22 Applications - General (141/98), July 28, 1933-April 11, 1962
Box
23 Applications - Differential Type (141/981), July 22, 1927-September 17, 1954
23 Applications - Modutrol System (141/982), February 6, 1932-July 30, 1942
U. Thermistors, 1941-1956
Box
23 Testing (142/60), March 1941-August 16, 1956
23 Applications (142/80), September 22, 1947-November 15, 1955
V. Photoelectric Pyrometry, 1931-1956
Box
23 Articles (143/05), December 1931-August 1956
23 Bulletins (143/07), October 23, 1936-January 1940
23 Optimatic Theory & Early Development (143/10), December 28, 1934-January 18, 1938
23 Ratio Radiation Theory (143/11), January 22, 1943-November 4, 1953
23 Optimatic Eye Design (143/15), February 11, 1936-October 29, 1940
23 Optimatic Recorders (143/21), August 13, 1936-September 26, 1938
23 Optimatic Indicators (143/22), August 21, 1936-January 7, 1937 [items OS-2]
23 Optimatic Calibration (143/30), February 27, 1934-July 18, 1941
23 Optimatic Charts & Scales (143/31), May 19, 1936-January 25, 1939
23 Optimatic Power Units (143/40), December 26, 1934-July 18, 1940
23 Optimatic Relays (143/50), May 8, 1935-July 8, 1936
23 Optimatic Timers (143/51), March 26, 1936-June 22, 1938
23 Optimatic Switches (143/52), March 29, 1934-January 6, 1936
23 Optimatic Tubes (143/53), March 3, 1937
23 Optimatic Wiring (143/70), December 19, 1934-August 3, 1936
23 Optimatic Service (143/96), October 13, 1936-July 27, 1953
23 Optimatic Applications (143/98), December 3, 1934-September 26, 1952
W. Radiation Pyrometry, 1916-1969
Box
23 Patent Department (144/02), May 12, 1943-November 23, 1956
23 Articles (144/05) (1 of 2), 1916-July 23, 1958
Box
24 Articles (144/05), 1916-July 23, 1958
24 Bulletins (144/07), September 15, 1936-April 24, 1952
24 Theory (144/10), June 22, 1934-September 9, 1955
24 Emissivity (144/11), October 1949-August 17, 1956
24 Radiamatic Systems - General (144/20), December 31, 1941-October 12, 1956
24 Radiamatic Systems - Testing (144/21), November 15, 1932-April 5, 1956
24 Calibration - General (144/22), June 17, 1937-March 1955
24 Calibration - Accuracy (144/221), March 25, 1940-April 3, 1957
24 Calibration - Standards (144/222), August 22, 1941-December 13, 1950
24 Calibration - Narrow Angle (144/30), January 25, 1940-May 26, 1955
24 Calibration - Wide Angle (144/31), February 26, 1941-November 2, 1955
24 Calibration - High Range (144/32), September 9-October 10, 1955
24 Low Range - General (144/33), April 8, 1941-November 14, 1962 [items OS-3]
24 Low Range - DuPont & Firestone (144/331), May 17, 1950-October 1, 1952
24 Low Range - Small Target (144/34), April 18, 1947-January 20, 1955
24 Low Range - Low Intermediate (144/35), May 11, 1951-September 6, 1955
24 Low Range - Intermediate (144/36), January 2, 1948-June 30, 1953
24 Low Range - High Speed (144/38), September 26, 1952-August 1, 1955
24 Low Range - Emmittance Free (144/39), February 19, 1952-November 19, 1956
24 Low Range - Miniature (144/37), July 17, 1950-June 4, 1957
24 Low Range - Sapphire Rod (144/40), April 16, 1952-September 19, 1969
24 Low Range - Pressure Type Pyrometer (144/50), December 21, 1929-June 13, 1945
Box
25 Low Range - Bolometer Type Pyrometer (144/55), September 6, 1943-April 13, 1948
25 Low Range - Parts (144/70), November 13, 1940-November 2, 1955
25 Low Range - Housings (144/71), October 19, 1939-May 20, 1948
25 Low Range - Lenses & Assemblies (144/72), June 4, 1940-April 4, 1956
25 Low Range - Thermopiles & Assemblies (144/73), October 28, 1941-October 20, 1954
25 Low Range - Accessories (144/80), July 25, 1940-January 5, 1955
25 Low Range - Rheostats, Calibrating (144/81), June 22, 1942-October 5, 1955
25 Target Tubes - General (144/82), August 8, 1939-September 10, 1956
25 Target Tubes - Ceramic (144/821), October 18, 1939-May 15, 1951
25 Target Tubes - Silica Carbide (144/8211), November 24, 1936-December 17, 1952
25 Target Tubes - Metallic (144/822), June 18, 1940-October 21, 1948
25 Target Tubes - Sales Data (144/90), August 23, 1940-April 26, 1956
25 Target Tubes - Service & Failures (144/91), February 4, 1942-June 13, 1955
25 Radiamatic Applications - Narrow Angle (144/980), June 1, 1942-May 23, 1955
25 Radiamatic Applications - Wide Angle (144/981), November 23, 1942
25 Radiamatic Applications - High Range (144/982), August 10, 1944-July 9, 1954
25 Radiamatic Applications - Low Range (144/983), June 3, 1940-June 14, 1956
25 Radiamatic Applications - Small Target (144/984), August 20, 1947-July 23, 1956
25 Radiamatic Applications - Low Intermediate (144/985), April 10, 1944-May 8, 1956
25 Radiamatic Applications - Intermediate (144/986), October 17, 1951-April 16, 1953
25 Radiamatic Applications - Miniature (144/987), November 15, 1949-April 3, 1957
25 Radiamatic Applications - High Speed (144/988), January 9, 1955-July 18, 1957
25 Radiamatic Applications - Emittance Free (144/989), May 27, 1954-May 11, 1956
25 Radiamatic Applications - Sapphire Rod (144/990), July 8, 1954-June 28, 1956
X. Thermocouples, 1932-1965
Box
25 General (146/00), January 12, 1953-January 10, 1964
25 Temperature EMF Tables (146/01), October 18, 1948-March 29, 1962
25 Smoothed Thermocouple Tables Of Extended Significance Vol. 2 Sections 2.1-2.14 - Patent Department (146/02), September 15, 1941-November 29, 1956
25 Smoothed Thermocouple Tables Of Extended Significance Vol. 2 Sections 2.1-2.14, March 1965
Box
26 Articles - General (146/05), April 15, 1913-February 19, 1958
26 Articles - Specific Types (146/051), March 1919-January 10, 1957
26 Articles - Specific Applications (146/052), May 1925-September 24, 1954
26 Articles - Speed Of Response (146/053), November 1931, May 6, 1952
26 Articles - Bulletins (146/07), 1932-September 10, 1954
26 Articles - Catalogues (146/08), September 30, 1941-May 21, 1946
26 Standard Type - General (146/10), September 25, 1941-August 11, 1949
26 Standard Type - Manufacturing (146/103), March 30, 1929-August 29, 1952
26 Standard Type - Welding (146/1032), August 12, 1942-February 19, 1964
26 Standard Type - Specs & Standards (146/104), March 11, 1947-May 2, 1958
26 Standard Type - Testing (146/106), November 21, 1928-August 15, 1952
26 Standard Type - Calibration (146/1061), February 4, 1932-January 12, 1965
26 Standard Type - Speed of Response (146/1062), September 26, 1945-July 9, 1964
26 Standard Type - Stability (146/1063), 1963-1965
26 Standard Type - Vibration Test (146/1065), September 1961
26 Standard Type - Applications (146/108), August 31, 1945-December 16, 1963
26 Standard Type - Sub-Zero (146/1081), September 24, 1941-May 8, 1953
26 Standard Type - Service (146/109), February 13, 1945-December 12, 1955
26 Standard Type - Angle Type (146/20), November 24, 1943-February 5, 1952
26 Standard Type - Molten Steel Thermocouples (146/21), June 29, 1953-April 29, 1959
26 Standard Type - Aspirating Type (146/22), November 3, 1931-July 1954
26 Standard Type - Molten Brass T/C (146/23), June 13, 1960-November 21, 1961
26 Standard Type - Averaging Type (146/24), August 25, 1932-September 19, 1961
26 Standard Type - Spring Loaded Type (146/25), July 14, 1964
26 Standard Type - Deflorex 3 Junction (146/30), March 10, 1931-March 14, 1944
26 Standard Type - Differential Type (146/34), March 27, 1941-February 16, 1955
26 Standard Type - Linear Output (146/36), April 18, 1958
26 Engine Type - General (146/38), March 21, 1951-December 1962
26 Engine Type - Diesel (146/381) (1 of 2), March 16, 1934-May 12, 1961
Box
27 Engine Type - Diesel (146/381), March 16, 1934-May 12, 1961
27 Engine Type - Rivet Type (146/3811), December 4, 1941-December 1, 1944
27 Engine Type - Spark Plug (146/3812), February 16, 1933-October 23, 1952
27 Temperature Sensing Elements for Aircraft Gas Turbines: A Design Study - Gas Turbine (146/382), November 8, 1946-May 4, 1959
27 Temperature Sensing Elements for Aircraft Gas Turbines: A Design Study - Aircraft Industries (146/3821), October 30, 1946-October 17, 1949
27 Temperature Sensing Elements for Aircraft Gas Turbines: A Design Study - NBS (146/3822), January 5, 1946-October 26, 1950
27 Temperature Sensing Elements for Aircraft Gas Turbines: A Design Study - Jet & Rocket (146/383), May 3, 1945-October 10, 1956
27 Temperature Sensing Elements for Aircraft Gas Turbines: A Design Study - J-Box Type (146/40), August 27, 1946-March 27, 1953
Temperature Sensing Elements for Aircraft Gas Turbines: A Design Study, March 30, 1949
Box
27 Compacted Mineral Oxide - General (146/45), December 1, 1954-August 25, 1964
27 Compacted Mineral Oxide - Insulation Resistance (146/451), June 20, 1963
27 Compacted Mineral Oxide - Specifications (146/458), 1964
27 Compacted Mineral Oxide - Competitive (146/459), June 15, 1962-July 8, 1964
27 Pencil Type - General (146/50), October 28, 1935-September 29, 1961
27 Pencil Type - Testing (146/506), November 13, 1934-December 26, 1950
27 Pencil Type - Tubing (146/507), April 27, 1932-May 19, 1961
27 Surface Type - General (146/55), November 14, 1929-March 28, 1972
27 Surface Type - Roll Temperature (146/551), October 1930-August 2, 1955
27 Surface Type - Tube Temperature (146/552), August 15, 1939-July 30, 1953
27 Two Wire Type - Tube Temperature (146/57), February 22, 1952-November 13, 1957
27 Two Wire Type - Vacuum Type (146/59), July 15, 1921-October 18, 1948
27 High Temperature Type - General (146/60), March 5, 1958-June 25, 1964
27 High Temperature Type - Compatibility Of Materials (146/601), July 15, 1960-April 1964
27 High Temperature Type - Cryogenic Thermocouple Sensors (146/70), March 3, 1961
Box
28 High Temperature Type - Parts (146/80), April 19, 1967
28 High Temperature Type - Connectors (146/81), October 16, 1941-September 1964
28 Insulators - General (146/82), December 16, 1932-May 16, 1961
28 Insulators - Magnesium Oxide (146/823), June 13, 1962
28 Insulators - Beryllium Oxide (146/824), June 28, 1961
28 Insulators - Health Hazards Of Beryllium and Thoria Oxide (146/827), July 7, 1959-January 15, 1960
28 Insulators - Flanges (146/83), December 31, 1941-July 6, 1953
28 Insulators - Nameplates (146/84), April 27, 1942-May 11, 1944
28 Terminal Heads - General (146/85), October 29, 1963
28 Terminal Heads - '30-'39 (146/851), March 16, 1928-April 26, 1940
28 Terminal Heads - '40-'44 (146/852), March 18, 1942-July 24, 1945
28 Terminal Heads - '45-'49 (146/853), October 19, 1944-August 22, 1949
28 Terminal Heads - '50-'54 (146/854), March 19, 1951-May 20, 1954
28 Terminal Heads - '55-'59 (146/855), April 19-26, 1955
28 Terminal Heads - '60-'65 (146/856), April 10, 1959-April 25, 1962
28 Terminal Heads - Space Applications (146/90), July 15, 1962-October 1964
Y. Thermocouple Wire, 1922-1969
Box
28 General (147/00), April 21, 1933-December 6, 1962
28 Patent Department (147/02), June 14, 1945-February 26, 1962
28 Articles (147/05), September 21, 1932-February 21, 1956
28 Bulletins (147/07), August 27, 1931-September 6, 1955
28 Alumel (147/10), October 4, 1939
28 Bismuth (147/11), June 1952
28 Chromel (147/12), June 5, 1940
28 Cobalt (147/13), undated
28 Copper (147/14), January 20, 1941-October 12, 1960
28 Constantan (147/15), September 20, 1938-October 28, 1964
28 Iron (147/16), January 27, 1939-October 30, 1964
28 Platinum (147/17), September 2, 1925-January 16, 1959
28 Rhodium (147/18), March 10, 1938
28 Steel (147/19), July 15, 1937-December 29, 1949
28 Molybdenum (147/20), November 1956-October 1960
28 Rhenium (147/21), March 1, 1956
28 Tungsten (147/22), July 29, 1957-February 23, 1962
28 Tungsten/26% Rhenium (147/23), undated
28 Chromel-Alumel - General (147/30) (1 of 2), February 1940-September 7, 1965
Box
29 Chromel-Alumel - General (147/30), February 1940-September 7, 1965
29 Chromel-Alumel - Articles (147/301), March 1935-1963
29 Chromel-Alumel - Curves & Tables (147/302), October 25, 1932-April 20, 1955 [items OS Map Drawer]
29 Chromel-Alumel - Failures (147/303), April 26, 1932-October 20, 1964
29 Chromel-Constantan - General (147/31), December 22, 1922-March 3, 1961
29 Chromel-Constantan - Curves & Tables (147/312), November 2, 1931-December 2, 1964
29 Chromel-Constantan - Chromel-Platinum (147/32), February 21, 1940
29 Chromel-Constantan - Chromel-Steel (147/33), September 9, 1932-February 14, 1952
29 Copper-Constantan - General (147/40), May 10, 1932-January 2, 1953
29 Copper-Constantan - Curves & Tables (147/402), January 13, 1928-March 15, 1957
29 Copper-Constantan - Graphite-Tungsten (147/45), December 23, 1930-1948
29 Copper-Constantan - Iridium-Rhodium (147/48), November 22, 1948-October 24, 1968
29 Copper-Constantan - Iron-Alumel (147/50), April 10, 1931-December 27, 1934
29 Iron-Constantan - General (147/51), November 2, 1945-September 26, 1968
29 Iron-Constantan - Curves & Tables (147/512), January 20, 1942-September 15, 1958
29 Iron-Constantan - History (147/5181), 1927-1937
29 Iron-Constantan - History (147/5182), 1938
Box
30 Iron-Constantan - History (147/5183), 1939-1940
30 Iron-Constantan - History (147/5184), 1941-1942
30 Iron-Constantan - Curves & Tables History (147/5191), January 21, 1937-November 27, 1942
30 Iron-Constantan - Nickel-Chromium (147/55), February 5, 1930
30 Iron-Constantan - Nickel-Nickel Molybdenum (147/56), July 10, 1940-September 1, 1959
30 Iron-Constantan - Platinum-Platinum Iridium (147/59), October 9, 1931
30 Platinum-Platinum Rhodium - General (147/60), December 8, 1939-March 6, 1969
30 Platinum-Platinum Rhodium - Articles (147/601), October 1933-January 25, 1965
30 Platinum-Platinum Rhodium - Curves & Tables (147/602), January 19, 1926-December 7, 1962
30 Platinum-Platinum Rhodium - Pt/30 vs. Pt/6 Rhodium
30 Platinum-Platinum Rhodium - General (147/61), July 22, 1955-June 8, 1964
30 Platinum-Platinum Rhodium - Articles (147/611), undated
30 Platinum-Platinum Rhodium - Curves & Tables (147/612), October 6, 1960-April 11, 1966
30 Platinum-Platinum Rhodium - Pt/40 vs. Pt/20% Rhodium
30 Platinum-Platinum Rhodium - General (147/62), December 14, 1962
30 Platinum-Platinum Rhodium - Articles (147/621), August 6, 1965
30 Platinum-Platinum Rhodium - Curves & Tables (147/622), December 11, 1962
30 Platinum-Platinum Rhodium - Pt/5% vs. Pt/.1% Molybdenum (147/63), January 4, 1962-December 1963
30 Platinum-Platinum Rhodium - Steel-Constantan (147/65), May 23, 1940-September 11, 1941
30 Platinum-Platinum Rhodium - Platinel (147/66), May 28, 1964
30 W-W 26% Re - General (147/72), May 18, 1961-December 9, 1965
30 W-W 26% Re - Articles (174/721), July 1961-October 12, 1964
30 W-W 26% Re - Curves & Tables (147/722), November 8, 1961-November 29, 1963
30 W 5% Re vs. W 26% Re - General (147/73), April 1, 1962-August 11, 1967
30 W 5% Re vs. W 26% Re - Curves & Tables (147/732), June 21-September 21, 1962
30 W 5% Re vs. W 26% Re - W 3% Re vs. W 25% Re (147/74), January 22, 1962-November 29, 1967
30 Extension Wire - General (147/80), January 26, 1927-March 7, 1960
30 Extension Wire - Chrome-Alumel (147/801), July 27, 1945-March 20, 1961
30 Extension Wire - Chromel-Steel (147/802), July 16, 1936-October 25, 1948
30 Extension Wire - Copper-Constantan (147/803), July 17, 1935-December 30, 1952
30 Extension Wire - Copper-Copper Nickel (147/804), July 30, 1946-December 23, 1964
30 Extension Wire - Iron-Constantan (147/805), December 5, 1941-December 5, 1950
30 Extension Wire - Iron-Cupronel (147/806), June 26, 1941-July 27, 1966
30 Extension Wire - Extension Color Coding (147/81), July 28, 1939-February 27, 1951
30 Extension Wire - Extension Specs & Standards (147/82), September 19, 1944-April 5, 1951
Box
31 Extension Insulation - General (147/90), July 21, 1947-May 6, 1965
31 Extension Insulation - Asbestos (147/901), May 31, 1932-July 11, 1961
31 Extension Insulation - Glass (147/902), December 22, 1941-March 2, 1967
31 Extension Insulation - Lead (147/903), June 13, 1938-March 4, 1946
31 Extension Insulation - Rubber (147/904), September 30, 1943-December 20, 1951
31 Extension Insulation - Plastic (147/905), June 7, 1944-February 11, 1964
31 Extension Insulation - Sales Policies (147/95), May 2, 1933-March 18, 1955
Z. Thermocouple Accessories, 1925-1965
Box
31 General (148/00), March 1, 1965
31 Patent Department (148/02), May 29, 1940-November 12, 1942
31 Bulletins (148/07), August 13, 1942-January 26, 1950
31 Switches, Rotary (148/10), May 20, 1936-April 1, 1959
31 Switches, Key - General (148/12), December 12, 1934-December 2, 1954
31 Switches, Key - Assemblies (148/121), August 30, 1933-January 10, 1955 [items OS-4]
31 Switches, Key - Switches, Plug (148/14), November 24, 1937-June 4, 1952
31 Switches, Key - Switches, Push Button (148/16), April 21, 1942-August 16, 1956
31 Switches, Key - Calibration Boxes (148/30), June 9, 1932
31 Switches, Key - Distribution Boxes (148/32), October 8, 1925-April 11, 1931
31 Switches, Key - Protecting Tubes (148/33), October 18, 1929-April 29, 1959
31 Switches, Key - Rings (148/34), September 9, 1938-June 17, 1941
31 Switches, Key - Terminal Tubes (148/36), September 18, 1942-December 23, 1943
AA. Thermometers, 1921-1959
Box
31 General (150/00), January 31, 1952-January 10, 1959
31 Patent Department (150/02), December 3, 1937-August 3, 1954
31 Articles (150/05), September 7, 1932-November 1954
Box
32 Bulletins (150/07), December 11, 1935-June 11, 1953
32 Manufacturing - General (150/10), November 28, 1939-May 12, 1952
32 Manufacturing - Cost Data (150/101), December 18, 1945-December 5, 1952
32 Manufacturing - Materials (150/102), February 24, 1941-June 4, 1945
32 Manufacturing - Aging (150/103), January 6, 1942-May 16, 1946
32 Manufacturing - Bulb Assemblies (150/20), September 27, 1939-June 4, 1952
32 Bulb Assemblies, Liquid - General (150/21), February 3, 1942-August 12, 1947
32 Bulb Assemblies, Liquid - Theory (150/211), November 4, 1935
32 Bulb Assemblies, Liquid - Fill (150/213), July 14, 1932-March 4, 1952
32 Bulb Assemblies, Vapor - Theory (150/221), August 24, 1944-February 19, 1945
32 Bulb Assemblies, Vapor - Design (150/222), June 17, 1938-August 17, 1955
32 Bulb Assemblies, Vapor - Fill (150/223), 1916-January 4, 1949
32 Bulb Assemblies, Vapor - Testing (150/226), July 15, 1933-October 24, 1940
32 Bulb Assemblies, Vapor - Calibration (150/2261), August 27, 1935-January 24, 1947
32 Bulb Assemblies, Vapor - Overload (150/2262), July 12, 1934-June 15, 1944
32 Bulb Assemblies, Vapor - Ambient Temperature (150/2263), November 27, 1936-May 10, 1945
32 Bulb Assemblies, Vapor - Compensation (150/227), August 13, 1936-April 4, 1944
32 Bulb Assemblies, Vapor - Calender Roll (150/2281), September 26, 1930-October 11, 1932
32 Bulb Assemblies, Vapor - Applications (150/228), June 21, 1938-September 18, 1952
32 Bulb Assemblies, Vapor - Dairy (150/2282), May 4, 1939-April 27, 1949
32 Bulb Assemblies, Vapor - Dial (150/2283), February 23-November 20, 1934
32 Bulb Assemblies, Vapor - Dual Fill (150/2284), October 19, 1938-March 19, 1952
32 Bulb Assemblies, Vapor - Sac (150/22841), November 23, 1949-January 27, 1953
32 Bulb Assemblies, Gas - General (150/23), 1954
32 Bulb Assemblies, Gas - Theory (150/231), October 9, 1931-February 15, 1944
32 Bulb Assemblies, Gas - Design (150/232), May 21, 1930-March 12, 1945
32 Bulb Assemblies, Gas - Fill (150/233), May 22-August 18, 1944
32 Bulb Assemblies, Gas - Testing (150/236), November 20, 1933-May 28, 1945
32 Bulb Assemblies, Gas - Calibration (150/2361), October 24, 1939-April 14, 1949
32 Bulb Assemblies, Gas - Overload (150/2362), October 23, 1935
32 Bulb Assemblies, Gas - Ambient Temperature (150/2363), May 18, 1937-April 5, 1940
32 Bulb Assemblies, Gas - Applications (150/238), December 23, 1937-January 10, 1952
32 Bulb Assemblies, Mercury - Design (150/242), April 14, 1932-September 20, 1938
32 Bulb Assemblies, Mercury - Fill (150/243), April 1, 1937-January 15, 1946
32 Bulb Assemblies, Mercury - Testing (150/246), June 20, 1933-February 5, 1952
32 Bulb Assemblies, Mercury - Calibration (150/2461), November 1, 1938-June 23, 1950
32 Bulb Assemblies, Mercury - Ambient Temperature (150/2363), November 19, 1935-April 1, 1948
32 Bulb Assemblies, Mercury - Overload (150/2462), October 23, 1935
32 Bulb Assemblies, Mercury - Head Effect (150/2464), June 8, 1938-July 12, 1954
32 Bulb Assemblies, Mercury - Compensation (150/247), December 21, 1937-September 4, 1946
32 Bulb Assemblies, Mercury - Applications (150/248), October 15, 1940-November 27, 1953
32 Bulb Assemblies, Mercury - Dairy (150/2481), January 15, 1934-June 10, 1949
32 Bulb Assemblies, Mercury - Differential (150/2482), April 11, 1940-November 1921
32 Bulb Assemblies, Mercury - Refrigerated Truck (150/2483), July 5, 1950-December 8, 1952
32 Bulb Assemblies, Mercury - Sealed Piston (150/2484), June 4-August 2, 1951
32 Bulb Assemblies, Mercury - Self-Contained (150/2485), August 22, 1933-November 2, 1942
32 Bulb Assemblies, Mercury - Sign Board (150/2486), May 9, 1934-July 15, 1953
32 Speed Of Response - General (150/50), July 22, 1938-November 14, 1952
Box
33 Speed Of Response - Articles (150/501), January 10, 1941-November 1, 1955
33 Speed Of Response - Parts (150/60), December 16, 1937-April 18, 1956
33 Speed Of Response - Extension Necks (150/61), February 20, 1940-March 28, 1946
33 Speed Of Response - Filling Connectors (150/62), June 14, 1949-August 25, 1955
33 Speed Of Response - Fittings (150/63), December 8, 1937-January 31, 1947
33 Speed Of Response - Inserts (150/64), January 4, 1939-July 13, 1950
33 Speed Of Response - Tubing, Capillary (150/66), January 5, 1933-September 9, 1955
33 Service - General (150/95), January 27, 1943-August 23, 1945
33 Service - Vapor Filled (150/952), August 28, 1941-September 10, 1948
33 Service - Gas Filled (150/953), November 20, 1939-January 30, 1945
33 Service - Mercury Filled (150/954), December 5, 1955-November 19, 1936
BB. Temperature Controllers, Indicating, 1948-1955
Box
33 General (151/00), March 21, 1952-September 1955
33 Patents (151/02), June 12, 1951-February 8, 1952
33 Design (151/20), October 1, 1948-May 18, 1953
33 Testing (151/204), November 8, 1950-February 12, 1953
33 Manufacturing (151/205), January 15-August 18, 1952
33 Manufacturing-Cost Data (151/206), November 15, 1948-May 13, 1953
33 Manufacturing-Specs & Standards (151/207), August 10, 1950-June 4, 1952
33 Competitive Surveys (151/208), July 21, 1949-November 18, 1953
CC. Temperature Transmitters, 1947-1949
Box
33 General (158/00), September 4, 1947-August 15, 1949
DD. Pressure Measurement, 1936-1956
Box
33 General (160/00), December 28, 1936-January 27, 1942
33 Articles (160/05), February 1949-December 1956
33 Sealing Problems (160/40), March 22, 1939-March 17, 1953
EE. Pressure Elements, 1931-1957
Box
33 General (161/00), January 18, 1940-October 22, 1947
33 Patent Department (161/02), February 1, 1944-September 7, 1954
33 Articles (161/05), April 1933-June 14, 1956
33 Bulletins (161/07), May 27, 1949
33 Bourdon: Theory (161/11), August 28, 1936-January 21, 1957
33 Bourdon: Testing (161/16), February 14, 1950
33 Spiral: Theory (161/21), April 16, 1937-January 17, 1938
33 Spiral: Design - General (161/22), October 16, 1940-January 11, 1949
33 Spiral: Design - Tubing (161/221), October 22, 1937-September 27, 1949
33 Spiral: Design - Brackets (161/222), March 3, 1948-September 8, 1949
33 Spiral: Design - Spiral: Cost & Manufacturing (161/23), October 24, 1940-July 14, 1948
33 Spiral: Testing - General (161/26), June 23, 1937-July 27, 1953
33 Spiral: Testing - Calibration (161/261), October 24, 1938-November 18, 1952
Box
34 Spiral: Testing - Overload (161/262), December 20, 1938-November 6, 1953
34 Spiral: Testing - Temperature Compensation (161/263), August 24, 1938
34 Spiral: Testing - Spiral: Service (161/29), October 27, 1941-November 14, 1952
34 Spiral: Testing - Helices: Theory (161/31), January 23, 1935
34 Helices: Design - General (161/32), June 9, 1933-September 5, 1950
34 Helices: Design - Brackets (161/322), June 26, 1942-June 22, 1944
34 Helices: Design - Helices: Cost & Manufacturing (161/33), December 7, 1936-February 29, 1952
34 Helices: Design - Helices: Testing (161/36), November 19, 1931-November 15, 1951
34 Helices: Design - Helices: Service (161/39), November 26, 1937-April 15, 1953
34 Helices: Design - Bellows (Element) (161/40), February 22, 1955
34 Helices: Design - Bellows: Theory (161/41), January 1954
34 Helices: Design - Bellows: Design (161/42), August 15, 1943-April 16, 1946
34 Bellows: Testing - General (161/46), May 11, 1938-March 22, 1955
34 Bellows: Testing - Overload (161/462), November 1, 1938-April 4, 1945
34 Bellows: Testing - Corrosion (161/464), September 15, 1937-August 19, 1948
34 Bellows: Testing - Bellows: Service (161/49), January 17, 1949-November 12, 1952
34 Bellows: Testing - Diaphragms, Nonmetallic (161/50), January 14, 1938-June 29, 1939
34 Bellows: Testing - Diaphragms, Nonmetallic: Reports (161/51), December 1940
34 Bellows: Testing - Diaphragms, Nonmetallic: Design (161/52), March 31, 1938
34 Diaphragms, Nonmetallic: Testing (161/56), March 8, 1938-July 5, 1950
34 Diaphragms, Metallic: Testing (161/66), October 5, 1934-June 19, 1941
34 Diaphragms, February 27, 1952
FF. Pressure Gages, 1933-1957
Box
34 General (162/00), July 10, 1934-January 15, 1943
34 Patent Department (162/02), November 13, 1939-January 15, 1957
34 Articles (162/05), April 1, 1946-March 18, 1955
34 Bulletins (162/07), July 15, 1938-May 12, 1952
34 Bourdon - General (162/10), July 9, 1940
34 Bourdon - Theory (162/101), November 28, 1933-January 29, 1949
34 Bourdon - Design (162/102), May 19, 1938-October 10, 1940
34 Testing - General (162/106), April 17, 1940-December 2, 1955
34 Testing - Manning, Maxwell, & Moor (162/106-MA), November 12, 1947-September 11, 1953
34 Testing - Marsh Co. (162/106-MA), September 17, 1937-February 22, 1949
34 Testing - U.S. Gauge Division (162/106-UN), April 23, 1951-January 3, 1952
34 Testing - Service (162/109), October 1, 1945-September 13, 1951
34 Spiral - Design (162/202), June 29, 1937
34 Spiral - Cost & Manufacturing (162/203), November 25, 1941-July 28, 1955
34 Spiral - Testing (162/206), March 15, 1934-August 1955
34 Spiral - Applications (162/208), November 3, 1939-February 18, 1948
34 Spiral - Service (162/209), August 24, 1939-December 10, 1954
34 Bellows - Theory (162/301), July 12, 1950
34 Bellows - Design (162/302), June 9, 1943-August 12, 1948
34 Bellows - 5-50" H 2O (162/3021), October 13, 1942-February 3, 1944
34 Bellows - 100" H2O-15 PSI (162/3022), August 4, 1941-October 31, 1946
34 Bellows - Cost & Manufacturing (162/303), January 28, 1943-June 3, 1949
34 Bellows - Testing (162/306), August 30, 1940-April 11, 1950
34 Bellows - 5-50" H 2O (162/3061), May 26, 1942-May 25, 1944
34 Bellows - 100" H 2O-15 PSI (162/3062), October 30, 1941-January 28, 1949
34 Bellows - Applications (162/308), April 13, 1943-May 17, 1946
34 Bellows - Service (162/309), February 2, 1949
34 Bellows, Absolute Type - General (162/31), undated
34 Bellows, Absolute Type - Design (162/312), January 8, 1940-February 19, 1948
34 Bellows, Absolute Type - Power Set (162/3121), July 11, 1945-December 3, 1947
Box
35 Bellows, Absolute Type - Stainless Steel (162/3122), October 25, 1945-April 2, 1954
35 Bellows, Absolute Type - Cost & Manufacturing (162/313), January 18, 1940-August 10, 1948
35 Bellows, Absolute Type - Testing (162/316), January 19, 1942
35 Bellows, Absolute Type - Power Set (162/3161), July 13, 1944-November 30, 1945
35 Bellows, Absolute Type - Stainless Steel (162/3162), February 4, 1949-January 11, 1955
35 Bellows, Absolute Type - Applications (162/318), January 19, 1945-December 6, 1950
35 Bellows, Absolute Type - Service (162/319), August 3, 1945-April 15, 1946
35 Bellows, Absolute Type - Bellows, Micrometer Type (162/35), July 29, 1943-March 5, 1945
35 Bell - General (162/40), January 4, 1942-January 15, 1943
35 Bell - Theory (162/401), September 1, 1955
35 Bell - Design (162/402), June 3, 1935-October 18, 1943
35 Bell - Cost & Manufacturing (162/403), August 14, 1942-November 5, 1943
35 Key Number Section K083 - Testing (162/406), November 20, 1936-June 21, 1945
35 Key Number Section K083 - Applications (162/408), November 13, 1940-February 27, 1948
35 Key Number Section K083 - Service (162/409), April 8, 1942-April 2, 1948
35 Key Number Section K083 - Diaphragm (162/50), May 2, 1938-April 1952
35 Key Number Section K083 - Thermal (162/80), July 1937-June 1953
35 Key Number Section K083 - Ionization (162/90), July 1944-April 1946
GG. Pressure Transmitters, 1938-1953
Box
35 Patent Department (163/02), August 13, 1951-December 29, 1952
35 Articles (163/05), 1954
35 Bulletins (163/07), January 23-February 29, 1942
35 Pneumatic (163/10), August 15, 1949-June 14, 1950
35 Pneumatic, Spiral Type (163/15), January 25, 1938-August 21, 1950
35 Pneumatic, Bourbon "C" - General (163/20), November 15, 1949-October 24, 1950
35 Pneumatic, Bourbon "C" - "Jet Balance" (163/201), August 23, 1951-June 11, 1953
35 Pneumatic, Bourbon "C" - Electric (163/50), May 6, 1952-February 3, 1953
HH. Flow Measurement, 1923-1973
Box
35 General (180/00), May 6, 1943-March 21, 1957
35 Articles (180/05), May 25, 1933-January 10, 1958
35 Bulletins (180/07), February 9, 1937-June 3, 1940
35 Curve Series - 101-299 (180/10), May 12, 1930-August 17, 1931
35 Curve Series - 300-499 (180/10), July 18, 1930-December 1936
35 Curve Series - 500-599 (180/10), undated
35 Curve Series - 600-899 (180/10), September 29, 1948-January 16, 1973
35 Curve Series - Flow Handbook (180/15), August 16, 1943-January 3, 1947
35 Pulsating Flow - General (180/30), November 10, 1931-April 15, 1955
35 Pulsating Flow - Articles (180/301), December 6, 1928-September 6, 1967
35 Pulsating Flow - Sealing Problems (180/40), June 23, 1942-November 23, 1943
35 Gas Flow - General (180/50), November 24, 1931-December 8, 1954
35 Gas Flow - Articles (180/501) (1 of 2), December 8, 1926-October 1955
Box
36 Gas Flow - Articles (180/501), December 8, 1926-October 1955
36 Gas Flow - Courses (180/502), August 26, 1941-August 31, 1949
36 Gas Flow - Oxygen Flow (180/51), April 8, 1946-January 24, 1956
36 Gas Flow - Air Flow (180/52), August 20, 1932-July 28, 1953
36 Gas Flow - Steam Flow (180/53), August 4, 1925-November 30, 1951
36 Gas Flow - Chlorine Flow (180/54), April 30, 1930-December 9, 1955
36 Gas Flow - Water Flow (180/70), February 13, 1934-February 23, 1955
36 Gas Flow - Acid Flow (180/71), September 11, 1937-May 11, 1948
36 Gas Flow - Ammonia Flow (180/72), July 6, 1932-December 7, 1948
36 Gas Flow - Oil Flow (180/73), 1923-November 26, 1947
36 Gas Flow - Salt Flow (Molten) (180/74), April 11, 1938-March 14, 1945
II. Flow Primary Elements-Closed Channel, 1916-1957
Box
36 General (182/00), December 13, 1949
36 Patent Department (182/02), August 25, 1949-November 20, 1953
36 Articles (182/05), January 10, 1941-April 6, 1954
36 Bulletins (182/07), December 17, 1937-November 18, 1953
36 Main Line P., Theory - General (182/11), December 20, 1954-May 3, 1955
36 Main Line P., Theory - Articles (182/111), December 7, 1920-1954
36 Main Line P., Components - General (182/13), July 1937-December 1, 1949
36 Main Line P., Components - Straightening Vanes (182/131), September 21, 1932-November 16, 1942
36 Main Line P., Components - Flanges (182/132), September 3, 1930-1957
36 Main Line P., Components - Main Line P., Applications (182/18), April 4, 1939-December 2, 1952
36 Main Line P., Components - Connecting Piping (182/20), undated
36 Main Line P., Components - Connecting Piping, Theory (182/21), November 6, 1933-June 15, 1954
36 Connecting Piping, Design - General (182/22), May 3, 1954-October 7, 1955
36 Connecting Piping, Design - High Pressure (182/221), January 4, 1940-May 14, 1953
36 Connecting Piping, Design - Connecting Piping, Components (182/23), January 18, 1938-August 21, 1951
36 Connecting Piping, Design - Connecting Piping, Applications (182/28), May 19, 1930-August 10, 1954
36 Connecting Piping, Design - Orifices (182/40), October 4, 1950-September 6, 1955
36 Orifices, Theory - General (182/41), August 1936-December 30, 1953
36 Orifices, Theory - Articles (182/411), January 29, 1932-1955
36 Orifices, Theory - Segmental & Eccentric (182/4111), May 1942
36 Orifices, Theory - Quadrant Edge (182/4112), 1921-January 22, 1953
Box
37 Orifices, Theory - Calculations (182/412), July 1930-May 16, 1955
37 Orifices, Theory - Segmental & Eccentric (182/4121), May 17, 1932-January 11, 1955
37 Orifices, Theory - Quadrant Edge (182/4122), undated
37 Orifices, Design - General (182/42), March 9, 1938-July 12, 1955
37 Orifices, Design - Small Flow (182/421), December 27, 1949-December 11, 1952
37 Orifices, Design - Orifices, Specs & Standards (182/45), November 5, 1941-March 17, 1952
37 Orifices, Design - Orifices, Testing (182/46), December 28, 1934-May 1954
37 Orifices, Application - General (182/48), January 19, 1938-April 7, 1953
37 Orifices, Application - Small Flow (182/481), March 30, 1949-February 8, 1950
37 Orifices, Application - Orifices, Service (182/49), January 15, 1935-November 2, 1951
37 Venturi Tubes, Theory - General (182/51), September 11, 1936-February 14, 1955
37 Venturi Tubes, Theory - Articles (182/511), May 24, 1920-1947
37 Venturi Tubes, Theory - Calculations (182/512), February 8, 1926-December 7, 1943
37 Venturi Tubes, Theory - Venturi Tubes, Specs & Standards (182/55), August 16, 1949
37 Venturi Tubes, Theory - Venturi Tubes, Design (182/52), March 27, 1944-December 10, 1953
37 Venturi Tubes, Theory - Venturi Tubes, Applications (182/58), October 2, 1936-October 6, 1953
37 Venturi Tubes, Theory - Venturi Tubes, Service (182/59), May 2, 1951
37 Venturi Tubes, Theory - Flow Nozzles (182/60), July 29, 1947-August 29, 1949
37 Flow Nozzles, Theory - Articles (182/611), January 12, 1932-December 3, 1954
37 Flow Nozzles, Theory - Calculations (182/612), December 7, 1920-January 9, 1956
37 Flow Nozzles, Theory - Flow Nozzles, Design (182/62), March 2-November 23, 1951
37 Flow Nozzles, Theory - Flow Nozzles, Applications (182/68), March 27, 1940-January 9, 1952
37 Flow Nozzles, Theory - Flow Nozzles, Service (182/69), July 3, 1940-May 6, 1953
37 Flow Nozzles, Theory - Pitot Tubes (182/70), September 26-30, 1947
37 Pitot Tubes, Theory - Articles (182/711), December 8, 1916-November 18, 1955
37 Pitot Tubes, Theory - Calculations (182/712), August 3, 1942-July 29, 1954
37 Pitot Tubes, Theory - Pitot Tubes, Design (182/72), January 3, 1931
37 Pitot Tubes, Theory - Pitot Tubes, Applications (182/78), July 27, 1938-September 20, 1951
37 Pitot Tubes, Theory - Flow Tubes (182/80), October 14, 1948-December 15, 1954
37 Flow Tubes, Theory - General (182/81), September 9, 1949
37 Flow Tubes, Theory - Articles (182/811), September 15, 1948-January 10, 1950
37 Flow Tubes, Theory - Calculations (182/812), May 6-July 23, 1948
37 Flow Tubes, Theory - Special Types (182/90), December 22, 1936-January 8, 1957
JJ. Flow Primary Elements-Open Channel, 1920-1954
Box
37 Articles (183/05), March 1935-May 1950
37 Flumes, Theory (183/11), February 1921-December 10, 1954
37 Weirs (183/20), June 7, 1946-February 15, 1954
37 Weirs, Theory (183/21), May 24, 1920-June 1953
37 Gates (183/30), December 7, 1936
37 Gates, Theory (183/31), December 3-6, 1923
HH. Flow Secondary Elements-Closed Channel, 1930-1960
Box
37 General (185/00), May 12, 1941-May 3, 1954
37 Patent Department (185/02), November 6, 1944-March 19, 1953
37 Articles (185/05), January 10, 1951-August 7, 1954
37 Area Meter, Piston - General (185/10), 1932 December 17, 1953
37 Area Meter, Piston - Theory (185/101), March 22, 1933-October 11, 1949
37 Area Meter, Piston - Design (185/102), October 13, 1939-December 7, 1948
37 Area Meter, Piston - 3 Inch (185/1021), April-May 21, 1954
37 Area Meter, Piston - 4 Inch (185/1022), July 25, 1933-November 21, 1946
Box
38 Area Meter, Piston - Shell Development (185/10221), October 28, 1953-January 19, 1956
38 Area Meter, Piston - Testing (185/106), October 3, 1932-April 12, 1951
38 Area Meter, Piston - Calibration (185/1061), December 15, 1936-November 6, 1937
38 Area Meter, Piston - Applications (185/108), May 8, 1933-May 11, 1949
38 Area Meter, Piston - Oil (185/1081), November 10, 1930-April 9, 1956
38 Area Meter, Piston - Oxygen (185/1082), January 19, 1933-February 17, 1948
38 Area Meter, Piston - Sulfur (185/1083), December 23, 1947-April 9, 1948
38 Area Meter, Piston - Water (185/1084), February 21, 1940-October 20, 1949
38 Area Meter, Piston - Parallel Operation (185/1089), May 2, 1939-January 28, 1953
38 Area Meter, Piston - Service (185/109), April 3, 1936-March 30, 1950
38 Area Meter, Float - General (185/15), undated
38 Area Meter, Float - Theory (185/151), May 15, 1939-August 1954
38 Area Meter, Float - Instrument Adaptation (185/153), May 31, 1951
38 Area Meter, Float - Fischer & Porter (185/1531), February 16, 1939-May 21, 1951
38 Area Meter, Float - Brooks (185/1532), May 18, 1951-August 13, 1953
38 Area Meter, Float - Schutte & Koerting (185/1533), August 15, 1946-October 29, 1952
38 Area Meter, Float - Application (185/158), April 6, 1954
38 Area Meter, Float - Service (185/159), July 19, 1951
38 Area Meter, Float - Velocity Meters (185/20), August 27, 1947-April 1951
38 Area Meter, Float - Electro Meters (185/30), January 29, 1943-March 1954
38 Area Meter, Float - Electro Meters, Ultrasonic (185/31), January 3, 1951-November 1955
38 Area Meter, Float - Electro Meters, Electromagnetic (185/32), June 13, 1930-April 1, 1960
38 Area Meter, Float - Quantity Meters (185/40), April 1938-July 1, 1955
38 Area Meter, Float - Quantity Meters, Nutrating Disc (185/41), January 24-March 3, 1946
38 Area Meter, Float - Mass Flow Meters (185/70), December 16, 1949-May 5, 1958
38 Area Meter, Float - Mass Flow Meters, Compensated (185/71), June 20, 1930-February 1, 1956
38 Area Meter, Float - Mass Flow Meters, Integrated (185/72), May 1, 1953-July 4, 1955
II. Mercury Head Flowmeters, 1929-1959
Box
38 General (186/00), October 11, 1935-December 10, 1952
38 Patent Department (186/02), September 8, 1942-September 29, 1954
38 Square Root Mech. (Meter) - Design (186/202), December 27, 1932-November 27, 1947
38 Square Root Mech. (Meter) - Testing (186/206), June 1, 1932-February 26, 1952
38 Square Root Mech. (Meter) - Calibration (186/2061), March 24, 1932-July 13, 1944
38 Square Root Mech. (Meter) - Applications (186/208), November 17, 1930-December 18, 1950
38 Square Root Mech. (Meter) - Service (186/209), June 14, 1933-June 30, 1949
38 Square Root Mech. (Meter) - S.R.M., Sorteberg Type (186/21), June 14, 1951-October 16, 1952
38 Square Root Mech. (Meter) - S.R.M., Pittsburgh Equit. (186/28), August 10, 1942-February 3, 1949
38 Square Root Mech. (Meter) - S.R.M., Competition (186/29), January 14, 1936-August 8, 1947
Box
39 Square Root Mech. (Meter) - S.R.M., Parts (186/30), January 23, 1940-July 23, 1943
39 Square Root Mech. (Meter) - S.R.M., Floats (186/31), October 26, 1942-February 17, 1950
39 Square Root Mech. (Meter) - S.R.M., Overload Seals (186/32), January 23, 1941-January 11, 1951
39 Square Root Mech. (Meter) - S.R.M., "U" Tubes (186/33), March 30, 1933-August 4, 1945
39 S.R.M., Pressure Tight Bearings - Design (186/342), June 8, 1938-December 13, 1950
39 S.R.M., Pressure Tight Bearings - Greaseless (186/3421), May 1950-May 22, 1953
39 S.R.M., Pressure Tight Bearings - Testing (186/346), December 30, 1937-July 12, 1950
39 S.R.M., Pressure Tight Bearings - Lubrication (186/347), February 20, 1933-February 22, 1955
39 S.R.M., Pressure Tight Bearings - Service (186/349), May 29, 1934-August 20, 1951
39 S.R.M., Pressure Tight Bearings - S.R.M., Torque Tubes (186/35), October 22, 1942-June 1, 1951
39 S.R.M., Range Tubes - General (186/36), May 4, 1933-March 10, 1954
39 S.R.M., Range Tubes - Special (186/361), June 17, 1935-January 6, 1949
39 Linear Mechanical - Design (186/402), April 16, 1942-July 16, 1954
39 Linear Mechanical - Testing (186/406), May 15, 1950-April 4, 1955
39 Linear Mechanical - Application (186/408), March 13, 1951-January 19, 1955
39 Linear Mechanical - Service (186/409), May 11, 1950-December 30, 1952
39 Linear Mechanical - L. M. Ring Balance Type (186/41), November 7, 1938-February 3, 1948
39 Linear Mechanical - Linear Mechanical Parts (186/50), September 13, 1949-July 11, 1951
39 Linear Mechanical - L. M. Overload Seals (186/52), February 21, 1951
39 Linear Mechanical - L. M. Magnetic Couplings (186/55), March 25, 1949-January 23, 1951
39 Linear Mechanical - L. M. Range Bells (186/57), October 29, 1953-February 15, 1954
39 Square Root Electrical - General (186/60), December 13, 1938-October 16, 1940
39 Square Root Electrical - Design (186/602), November 17, 1927-December 19, 1950
39 Square Root Electrical - Sealed Armature (186/6021), February 28, 1941-June 16, 1947
39 Square Root Electrical - High Pressure (186/6022), January 13, 1930-January 29, 1953 [items OS Map Drawer]
39 Square Root Electrical - Testing (186/606), November 23, 1931-October 9, 1951
39 Square Root Electrical - Application (186/608), August 21, 1933-December 20, 1949
Box
40 Square Root Electrical - Service (186/609), January 20, 1939-March 7, 1952
40 Square Root Electrical - S. R. E. Bell Type (186/61), December 18, 1929-December 31, 1954
40 Square Root Electrical - S. R. E. Capacitance Type (186/62), December 15, 1936-October 15, 1951
40 Square Root Electrical - S. R. E. Parts (186/70), November 15, 1945-January 15, 1946
40 Square Root Electrical - S. R. E. Floats (186/71), January 12, 1940-September 12, 1941
40 Square Root Electrical - S. R. E. Range Tubes (186/76), November 1, 1951-February 4, 1938
40 Square Root Electrical - S. R. E. Range Bells (186/77), June 13, 1930-June 16, 1959
40 Square Root Electrical - S. R. E. Coil Housings (186/78), October 30, 1940-August 14, 1947
40 Square Root Electrical - S. R. E. Solenoid Core Tubes (186/79), September 8, 1939-August 25, 1943
40 Linear Electrical - Theory (186/801), March 18, 1952-September 25, 1954
40 Linear Electrical - Design (186/802), November 7, 1938-December 28, 1954
40 Linear Electrical - Manufacturing (186/803), September 26, 1949-May 21, 1954
40 Linear Electrical - Cost Data (186/8031), May 22, 1946-April 6, 1954
40 Linear Electrical - Testing (186/806), March 17, 1949-January 21, 1954
40 Linear Electrical - Field (186/8061), March 22, 1948-June 10, 1953
40 Linear Electrical - Competition (186/8062), March 5, 1947-March 4, 1948
40 Linear Electrical - Applications (186/808), March 21, 1949-August 14, 1953
40 Linear Electrical - Service (186/809), April 1, 1953
40 Linear Electrical - Linear Electrical Parts (186/90), August 6, 1947-September 18, 1953
40 Linear Electrical - L. E. Floats (186/91), April 28-September 24, 1948
40 Linear Electrical - L. E. Overload Seals (186/92), August 20, 1948-May 8, 1950
40 Linear Electrical - L. E. Range Bells (186/97), April 21, 1949-March 17, 1954
JJ. Dry Head Flowmeters, Diaphragm, 1941-1960
Box
40 General (187/00), October 30, 1950-November 10, 1955
40 Patent Department (187/02), September 26, 1944-March 13, 1953
40 Articles (187/05), February 1948-December 1953
40 Bulletins (187/07), December 20, 1950-August 11, 1955
40 Square Root Pneumatic - General (187/20), October 18, 1951-July 25, 1956
40 Square Root Pneumatic - Theory (187/201), May 19, 1949-January 19, 1953
40 Square Root Pneumatic - Design (187/202), February 1, 1949-February 13, 1956
40 Square Root Pneumatic - Extended Range (187/2021), August 7, 1951-March 21, 1952
40 Square Root Pneumatic - Manufacturing (187/203), June 5, 1950-December 1, 1954
40 Square Root Pneumatic - Cost Data (187/2031), January 30, 1950-March 14, 1955
40 Square Root Pneumatic - Specs & Standards (187/204), May 10, 1949-March 23, 1955
Box
41 Square Root Pneumatic - Testing (187/206), August 16, 1950-August 11, 1953
Box
40 Square Root Pneumatic - Competitive Surveys (187/205), October 1, 1948-January 6, 1950
Box
41 Square Root Pneumatic - Field (187/2061), December 11, 1950-January 15, 1954
41 Square Root Pneumatic - Rohm & Haas (187/20611), November 28, 1950-May 25, 1953
41 Square Root Pneumatic - Standard Oil (187/20612), December 19, 1950-April 29, 1952
41 Square Root Pneumatic - Atlantic Refining Company (187/20613), January 9-April 9, 1951
41 Square Root Pneumatic - Calibration (187/2062), June 30, 1960-June 12, 1953
41 Square Root Pneumatic - Zero Shift (187/2063), October 8, 1951-May 26, 1954
41 Square Root Pneumatic - Weight Calibration (187/2065), April 16, 1951-July 15, 1952
41 Square Root Pneumatic - Overload (187/2066), April 10, 1952-September 26, 1952
41 Square Root Pneumatic - Applications (187/208), February 16, 1951-April 7, 1955
41 Square Root Pneumatic - Pulsating Flow (187/2081), July 13, 1951-July 29, 1953
41 Square Root Pneumatic - Service (187/209), December 12, 1950-March 25, 1955
41 Square Root Pneumatic - Manual (187/2091), April 13, 1953-April 5, 1955
41 Square Root Pneumatic - S. R. P. Parts (187/30), July 12, 1950-September 26, 1955
41 Square Root Pneumatic - S. R. P. Flanges & Valves (187/31), September 5, 1950-November 4, 1954
41 Square Root Pneumatic - S. R. P. Diaphragm Connecting Links (187/32), December 23, 1952
41 Square Root Pneumatic - S. R. P. Diaphragm, Nonmetallic (187/33), January 31, 1949-May 21, 1957
41 Square Root Pneumatic - S. R. P. Diaphragms, Metallic (187/34), April 17, 1950-March 26, 1956
41 S. R. P. Pilot Assemblies - General (187/35), September 18, 1950-January 24, 1954
41 S. R. P. Pilot Assemblies - Balancing Bellows (187/351), January 24, 1951-December 22, 1954
41 S. R. P. Pilot Assemblies - S. R. P. Dashpots (187/36), August 29, 1951-May 11, 1953
Box
42 S. R. P. Pilot Assemblies - S. R. P. Bodies (187/37), July 24, 1950-June 17, 1954
42 S. R. P. Pilot Assemblies - S. R. P. Covers (187/38), May 12, 1950-July 18, 1953
42 S. R. P. Pilot Assemblies - S. R. P. Beams & Sealing Bellows (187/39), May 16, 1945-February 15, 1955
42 S. R. P. Pilot Assemblies - Linear Mechanical (187/40), December 17, 1941-November 10, 1942
42 S. R. P. Pilot Assemblies - Linear Mechanical Parts (187/50), December 15, 1944
42 Square Root Electric - Theory (187/601), June 6, 1951
42 Square Root Electric - Design (187/602), February 7, 1951-December 30, 1954
42 Square Root Electric - Manufacturing (187/603), July 12, 1951-October 27, 1953
42 Square Root Electric - Cost Data (187/6031), March 5, 1951-October 28, 1954
42 Square Root Electric - Specs & Standards (187/604), May 4, 1951-September 18, 1952
42 Square Root Electric - Testing (187/606), June 7, 1951-February 3, 1955
42 Square Root Electric - Calibration (187/6062), June 20, 1951-February 15, 1952
42 Square Root Electric - Stability & Dynamics (187/6064), November 16, 1951-July 13, 1954
42 Square Root Electric - Weight Calibration (187/6065), September 24, 1951
42 Square Root Electric - Applications (187/608), June 10, 1953-April 30, 1954
42 Square Root Electric - Service (187/609), July 12, 1951-February 7, 1955
42 Square Root Electric - S. R. E. Strain Gage Actuated (187/61), January 26, 1954-January 13, 1955
42 Square Root Electric - S. R. E. Flanges & Valves (187/71), August 7, 1953
42 Square Root Electric - S. R. E. Diaphragm Conn. Links (187/72), September 21-November 23, 1951
42 Square Root Electric - S. R. E. Diaphragms, Metallic (187/74), September 11-October 9, 1951
42 Square Root Electric - S. R. E. Springs (187/75), August 16-27, 1951
42 Square Root Electric - S. R. E. Dashpots (187/76), February 28-July 2, 1952
42 Square Root Electric - S. R. E. Covers (187/78), August 19-September 24, 1951
42 Square Root Electric - S. R. E. Low-Flow Alarm Switch (187/79), October 11, 1951-January 15, 1954
42 Square Root Electric - Linear Electric (Meter) (187/80), January 22, 1944-August 21, 1946
KK. Dry Head Flowmeters, Bellow, 1941-1956
Box
42 Square Root Pneumatic (Meter) (188/20), April 28, 1941-July 13, 1945
42 S. R. P. Barton Body (188/21), July 15, 1948-July 12, 1954
42 S. R. P. Barton Body, Non-Indicating (188/22), August 3, 1949-March 8, 1956
42 S. R. P. Brown Prototype (188/23), June 1, 1942-July 17, 1944
42 S. R. P. Parts (188/30), May 24, 1943-January 31, 1956
42 Linear Pneumatic (Meter) (188/40), April 28, 1941-January 13, 1943
42 S. R. E. Barton Type (Lummis) (188/61), May 6, 1952-December 31, 1953
LL. Flowmeters-Open Channel, 1948-1956
Box
42 General (191/00), December 29, 1948-July 6, 1949
42 Bulletins (191/07), December 16, 1949-September 27, 1954
42 Mechanical - Design (191/102), May 31, 1949-November 1, 1955
42 Mechanical - Manufacturing (191/103), April 22, 1954-June 27, 1955
42 Mechanical - Cost (191/1031), April 16, 1952-October 11, 1955
42 Mechanical - Competitive Survey (191/105), February 16-March 9, 1953
42 Mechanical - Testing (191/106), July 6, 1953-March 26, 1954
42 Mechanical - Mechanical Parts (191/30), January 23, 1956
42 Mechanical - Mechanical Cams (191/31), October 29, 1952-November 6, 1953
42 Mechanical - Mechanical Floats (191/32), January 26, 1955
MM. Liquid Level Measurement, 1941-1953
Box
42 General (195/00), August 4, 1941-January 19, 1953
42 Articles (195/05), 1948-August 5, 1953
42 Bulletins (195/07), 1942
NN. Liquid Level Meters, Float, 1930-1955
Box
43 General (196/00), March 21, 1930-August 19, 1952
43 Patent Department (196/02), March 12-September 30, 1953
43 Articles (196/05), November 15, 1955
OO. Liquid Level Meters, Displacement, 1940-1956
Box
43 General (197/00), July 23, 1947-January 23, 1956
43 Patent Department (197/02), June 4, 1947-November 23, 1955
43 Transmitters (197/50), September 26, 1940-November 13, 1950
43 Transmitters, Control - Theory (197/701), August 5, 1952
43 Transmitters, Control - Design (197/702), May 25, 1950-December 29, 1952
43 Transmitters, Control - Manufacturing & Cost (197/703), October 24, 1950-November 13, 1952
43 Transmitters, Control - Competitive Survey (197/705), May 15-June 22, 1950
43 Transmitters, Control - Testing (197/706), February 8, 1951-February 14, 1952
43 Transmitters, Control - Applications (197/708), April 10, 1951-November 20, 1952
43 Transmitters, Control - Transmitter Parts (197/90), June 20, 1950-January 2, 1953
PP. Liquid Level Meters, Head, 1932-1955
Box
43 Patent Department (198/02), June 16, 1950-September 16, 1953
43 Bulletins (198/07), July 21, 1939, January 13, 1955
43 Mercury Head (198/10), November 19, 1932-October 24, 1945
43 Dry Head (198/20), May 11, 1950-November 3, 1955
43 Dry-Testing (198/22), June 18, 1953-July 8, 1955
43 Diaphragm Box (198/30), January 16, 1932-August 21, 1950
43 Dip Tube (198/40), October 24, 1950-February 7, 1955
QQ. Liquid Level Meters, Electric, 1931-1956
Box
43 General (199/00), February 17, 1931-February 22, 1956
43 Patent Department (199/02), May 26-September 16, 1953
43 Articles (199/05), February 11, 1943-November 1954
43 Transmitters (199/50), May 6, 1952-January 23, 1953
RR. Mechanical Parts, 1943-1955
Box
43 Lever and Links (200/16), January 15, 1943-May 26, 1944
43 Stabilized Spiral Systems (200/17), December 19, 1949-May 21, 1955
43 Nameplate Life (200/192), August 25, 1953-March 26, 1954
SS. Sealing Devices, 1952-1954
Box
43 Sealing Devices (235/00), November 14, 1952-December 28, 1954
TT. Electronic Devices & Parts, Integrator, 1931-1950
Box
43 Electronic Devices & Parts, Integrator (250/651), October 30, 1931-July 10, 1950
UU. Chart Drives, 1936-1955
Box
44 Hand Wound (259/10), February 7, 1936-December 13, 1954
44 INSCO-Brown Chart Speed Changer (259/20), October 23, 1952-September 13, 1954
44 Pneumatic - Macnick Division (259/301), May 21, 1951-November 3, 1954
44 Pneumatic - Seth Thomas (259/302), August 17, 1951-June 10, 1955
VV. Chart Paper, 1939-1956
Box
44 General (260/002), February 3, 1953-June 5, 1956
44 Quality Tests (260/20), February 19, 1953-January 7, 1955
44 Circular (260/201), July 9, 1941-October 25, 1955
44 Strip Chart Paper (260/212), April 20, 1939-June 2, 1942
XX. Integrators, 1949-1956
Box
44 Pneumatic (264/30), February 4, 1949-July 16, 1956
44 Miscellaneous Reports - 264/50-264/519, May 31, 1949-October 28, 1955
YY. Balancing Motor, 1947-1958
Box
44 Balancing Motor (267/05-267/332), April 11, 1947-February 19, 1958
44 Petroleum Industry
44 Production-Liquid - Natural Oil Pool-Repressurizing (871/115), May 6, 1943-September 25, 1957
III Job Files & Miscellany, 1937-1964
3.25 linear feet
Scope and Content
Consists primarily of job files following the progress and development of specific jobs by the Engineering Department. Also here are meeting minutes for the Bulb & Well Committee of Scientific Apparatus Makers of America (SAMA) whose general purpose, according to the minutes, "was to study the possibility of recommending standards for thermometer bulbs and wells." W. A. Lang from Brown Instrument was the committee's acting Secretary Pro Tem.
Arrangement
Job files are arranged in order by job number and consist of reports and project status notice forms from the Engineering Department. The Meeting Minutes are arranged in chronological order.
A. Jobs, 1949-1964
0.5 linear feet
Box
44 Electronic Integrator For Class 20 and 22 Instruments (267/99), July 23, 1952-December 30, 1953
44 Develop Electric Motor Mechanism For Valve Actuation (268/40) (1 of 2), January 5, 1949-January 2, 1953
Box
45 Develop Electric Motor Mechanism For Valve Actuation (268/40), January 5, 1949-January 2, 1953
45 Improvement of Paper and Ink for All Recording Instruments (272/00), June 26, 1953-March 9, 1954
45 Class 15 Circular Chart Potentiometer Bucket Pens-Redesign (272/11), March 16, 1949-January 4, 1951
45 Improved Pen and Bracket For Two Pen Type 153 (272/31), August 17, 1951-March 8, 1954
45 Pen Improvements For Class 153 Strip Chart Instruments (272/312), March 16, 1949-July 8, 1953
45 (Job 6707) Foxboro Type 3E Electric D/P Cell, July 22, 1952
45 (Job 6753) Competitive Study Of L&N PAT-50 Electric Controller With Rate Action, August 27, 1951-February 27, 1953
45 (Job 6769) SARCO Electric Thermostat, October 5, 1951-August 22, 1952
45 (Job 6771) Competitive Test-Foxboro D/P Cell, June 6, 1952
45 (Job 6810) The Weston Recording Potentiometer, September 3, 1953
45 (Job 6820) Averaging-Type Weston Resistance Thermometers For Oil Tank Application, February 11-May 5, 1953
45 (Job 6822) Bailey Synchrometer, January 14, 1954
45 (Job 6832) Taco-West Galvanometer Proportioning Controller, March 30, 1953
45 (Job 6833) Pyrometer Conversion Kit Made By Pyrometer Service, March 11, 1953
45 (Job 6860) Hagen Electro-Pneumatic Transmission System, November 4, 1953
45 (Job 6954) Competitive Test-Fielden Tektolog Temperature Recorder With On-Off Control, February 2, 1954-February 7, 1955
45 (Job 6956) Electromax Temperature Signaling Controller For Two-Position Control, February 14, 1955
45 (Job 6971) Model JS Stepless Controller, April 20, 1955
45 (Job 6974) Foxboro Square Root Extraction Relay, June 24-September 7, 1954
45 (Job 7033) Evaluation Of Constant Current Sources, May 28, 1954
45 (Job 7152) Scientific Specialties Co. Constant Voltage Unit, August 29, 1955-April 18, 1957
45 (Job 7159) Westronics 5" Strip Chart Potentiometer, October 11, 1955-December 16, 1957
45 (Job 7178) Shallcross Electronic Galvanometer Type 1965, January 7, 1957
45 (Job 7248) Taylor Transcope Controller, March 15, 1957-January 1, 1959
45 (Job 7263) Pyruni Radiation Pyrometer, May 24, 1957
45 (Job 7262) Bristol 3" Strip Chart POT, October 20, 1958
45 (Job 7310) Foxboro Type 37 Diaphragm Flow Meter, October 17, 1957-January 1, 1959
45 (Job 7312) M.M.M. American Electronic Control System, September 1957-October 23, 1958
45 (Job 7316) Gotham Thermometer Recorder (Hg), December 10, 1957
45 (Job 7350) Negretti & Zambra 3-Term Controller, May 29, 1958
45 (Job 7359) 90J Series Taylor Transcope Recorder, July 9, 1958
45 (Job 7512) Relay Back Mounted Class 15 ESCP, May 9, 1962-October 10, 1963
45 (Job 7515) Improved Resistance Thermometer Bulb, February 2, 1961-October 10, 1963
45 (Job 7524) Welded Bellows For Flowmeters, March 6, 1961-October 24, 1963
45 (Job 7530) Vane Flowmeter, March 22, 1961-October 21, 1963
45 (Job 7531) Class 15 Simplification Standardization, April 11, 1961-October 10, 1963
45 (Job 7551) Inductance Bridge Transmitter For Differential Converter, May 3, 1961-February 13, 1964
45 (Job 7566) Frequency Telemeter-I/F and F/I, February 21, 1962-October 1, 1963
45 (Job 7575) Sargent Model SR Laboratory Recorder, October 23, 1961-October 16, 1963
45 (Job 7583) Class 18 Circular Chart Recorder And Circular Scale Indicator, March 19, 1962-September 23, 1963
45 (Job 7588) Evaluation Of L&N Speedomax H Strip Chart With Series 60 CAT Controller, February 5, 1962-October 16, 1963
45 (Job 7591) Evaluate L&N Speedomax G 0.4 Second Strip Chart, February 22, 1962-October 16, 1963
45 (Job 7628) Class 18 Die Cast Door & Options, October 3, 1962-September 23, 1963
45 (Job 7642) Customers Drawings Convair Contract-SSD Pottstown, November 26, 1962-October 1, 1963
45 (Job 7685) Multi-Speed Electro-Mechanical Chart Drive, March 29, 1963-October 3, 1963
45 (Job 9275) Mass Flow Meter, April 14-November 24, 1961
45 (Job 9293) Study Of New Devices Related To Digital Instrumentation, November 2, 1961-September 23, 1963
45 (Job 9296) Liquid Density Transmitter With Plastic Tube, February 13-October 14, 1963
45 Miscellaneous Engineering Reports, December 26, 1951-January 22, 1959
B. Closed Jobs, 1937-1958
2.5 linear feet
Box
45 No. 6626-6865, 1950-1956
Box
46 No. 6866-8439, 1937-1957
Box
47 No. 8483-8669, 1944-1956
47 No. 8663 Pulp Consistency Controller Investigation, March 27, 1951-July 2, 1954 April 6, 1950-August 23, 1954
47 Correspondence, July 22, 1949-July 21, 1954
47 No. 8670-9300, 1950-1958
C. SAMA Bulb & Well Committee Meeting Minutes, 1946-1962
0.25 linear feet
Box
47 July 16, 1946-December 15, 1949
Box
48 January 12, 1950-September 5, 1962
48 Progress Reports, 1946-1953