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US Patent: 181,701
Pipe-Tongs
Patentee:
Duncan McLaren (exact or similar names) - Brooklyn, NY

USPTO Classifications:
81/98

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench adjustment types : self-adjust wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
A. P. Bales
J. A. Skilton
J. Gardner
I. S. Yeatman

Patent Dates:
Applied: Jul. 08, 1876
Granted: Aug. 29, 1876

Patent Pictures:
Duncan McLaren Pat. August 29, 1876
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Description:
The swinging "hook jaw" has a "V" shaped retaining tip at the end of a curved bearing surface. The teeth on the curved face of the "handle" portion increase in size and spacing corresponding to the size of pipe to be gripped.

An extant example is marked with the patent date.

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