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US Patent: 269,234
Pipe Wrench
Patentee:
Edwin A. Robbins (exact or similar names) - Boston, MA

USPTO Classifications:
81/127, 81/166

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. R. Marble
James T. Dorsey
A. E. Leavitt
Sylvenus Walker

Patent Dates:
Applied: Oct. 02, 1882
Granted: Dec. 19, 1882

Patent Pictures:
Edwin A. Robbins patent December 19, 1882
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Description:
The adjustable jaw and its adjusting nut fit within the framework of the fixed jaw. A spur on the end of the hinged handle fits in a groove in the adjusting nut. The movement of the hinged handle allows limited motion so the jaws grip without crushing the pipe.

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