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US Patent: D3,785
Design For A Plow-Clevis
Patentees:
George P. Darrow - Cincinnati, OH
George Johnson (Administrator) - Cincinnati, OH

USPTO Classifications:
D15/11

Tool Categories:
agricultural tools : clevises
wrenches

Assignees:
James L. Haven & Co. - Cincinnati, OH

Manufacturer:
Not known to have been produced

Witnesses:
Geo. H. Knight
James H. Layman

Patent Dates:
Granted: Dec. 14, 1869

Patent Pictures:
G. P. Darrow Pat. Dec. 14, 1869
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Description:
The clevis design includes a "wrench-head pin" and is clearly related to Darrow's Aug. 21, 1866 patent (no. 57,436), and June 18, 1867 plow clevis design patent (no. D2,674).

According to Jack Devitt's "Ohio Toolmakers and Their Tools," James L. Haven & Co. and successor firms produced a variety of ironware from the late 1850s well into the 20th Century.

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