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Fred C. Ielfield patents

Creation: 1901-1946
Accession: 1043


Fred C. Ielfield (1864-1948) was a mechanical engineer and inventor. This collection consists of twelve patents for mail canceling and postmarking machinery, corn-husking machinery, and a cereal cutter, all invented by Ielfield.


  • Creation: 1901-1946



41 item(s)

Biographical Note

Fred Charles Ielfield (1864-1948) was a mechanical engineer and inventor. He was born in Germany in 1864 and emigrated to the United States with other family members around 1870, settling in Silver Creek, Chautauqua County, New York.

While Ielfield also patented agricultural machinery, he found success with one of the first successful machines for the automated canceling and postmarking of the mail. He and his brother, August (1869-1952), founded the Columbia Postal Supply Company in 1898 and incorporated it in 1900. Fred left the firm in 1915, after general manager John W. Slack gained control, and established the rival Standard Mail Marking Machine Company. August made improvements to his brother's invention and eventually regained control.

He married Mary L. Wackerly (1867-1944) in 1885 and the couple had a daughter, Esther. Ielfield died in 1948 and is buried in the family plot in Greenwood Cemetery in Silver Creek.

Scope and Contents

The records consist of twelve patents for mail canceling and postmarking machinery invented by Fred C. Ielfield (1864-1948) during the time when he was with the Columbia Postal Supply Company. There are also two patents for corn-husking machinery and a patent and related correspondence for a cereal cutter. There is an unrelated patent for a vibrating screen by mechanical engineer Alexander Lorn Munro (1887-1890) of Milwaukee.

Access Restrictions

No restrictions on access; this collection is open for research.

Language of Materials


Finding Aid & Administrative Information

Frank C. Ielfield patents
Description rules:
Describing Archives: A Content Standard
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Revision Statements

  • 2021: Ashley Williams

Repository Details

Repository Details

Part of the Manuscripts and Archives Repository

PO Box 3630
Wilmington Delaware 19807 USA