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US Patent: 302,842
Monkey-Wrench
Improved Serrated Pipe-Gripping Jaw
Patentees:
Robert C. Hayton - East Saginaw, MI
William H. Hayton - East Saginaw, MI
Samuel H. Heginbottom - East Saginaw, MI

USPTO Classifications:
81/184

Tool Categories:
wrenches : wrench components : pipe jaw attachments for wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Jay W. Sutton
Geo. W. Weodock
Phil C. Dieterich
W. R. Keyworth

Patent Dates:
Applied: May 05, 1884
Granted: Jul. 29, 1884

Patent Pictures:
S. H. Heginbottom, R. C. Hayton, and W. H. Hayton patent July 29, 1884
USPTO pdf tiff
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Description:
The patent is for the pipe-gripping insert, and the modifications to the fixed jaw that allow it to be slipped on and off the wrench.

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