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US Patent: 388,607
Pipe Wrench
Improvement in Pipe Tongs
Patentee:
David B. Whitehill - North Clarendon, PA

USPTO Classifications:
81/384, 81/411, 81/422

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
P. L. Brooks
C. W. Seville
A. H. Simpson
Marge E. Whitehill

Patent Dates:
Applied: Apr. 16, 1888
Granted: Aug. 28, 1888

Patent Pictures:
David B. Whitehill patent August 28, 1888
USPTO pdf tiff
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Description:
The end of the "fixed" jaw has a reversible, repositionable gripping block. The position of the hook jaw is adjustable by the link pin on the lever handle, and notches on the main shank. The connection between the lever handle and hook jaw is a wire loop.

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