US Patent: 172,551 - Improvement in Coach-Wrenches


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US Patent: 172,551

Wrench
Improvement in Coach-Wrenches

Patentee:

James R. Brown (exact or similar names) - Cambridgeport, MA

USPTO Classifications:

81/124.5, 81/389, 81/DIG4

Tool Categories:

wrenches : pipe and nut combination wrenches

Assignees:

Eliza A. Cloudman - Lynn, MA

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Dec. 01, 1875
Granted:	Jan. 25, 1876

Patent Pictures:

James R. Brown Pat. January 25, 1876

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Description:

The jaw faces are serrated to grip pipe; depending on the handle angle, the angle of the movable jaw can be adjusted relative to its handle, and a screw at the end of the handle can adjust the jaw's position "up and down."