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US Patent: 4,292
Plow-Clevis
Improvement in Plow-Clevises
Patentee:
Patrick Gallagher (exact or similar names) - Chambersburg, PA

USPTO Classifications:
278/96.2

Tool Categories:
agricultural : clevises
wrenches : auxiliary wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Wm. P. Elliott
Edmund Maher

Patent Dates:
Granted: Nov. 26, 1845

Patent Pictures:
Patrick Gallagher patent November 26, 1845
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Description:
Clevis with screw-adjusting draft adjustment, and two wrench-headed pins. A vertical threaded rod adjustment similar to this is noted in description of "quadrant clevis" in an 1861 publication. The specifications differentiate this adjustment from the clevis in the Gallatin Plow (pat. no. 3,052).

The patent is noted in discussion of patent applications for wrench-headed clevis pins that appears on pg. 674 of the Dec. 17, 1872 PATENT GAZETTE.

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