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US Patent: 593,149
Pipe Wrenc h
Patentee:
Lawrence Williams - Columbus City, IA

USPTO Classifications:
81/99

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Philip C. Masi
Carroll J. Webster
F. Colton
R. S. Johnston

Patent Dates:
Applied: Jul. 19, 1897
Granted: Nov. 02, 1897

Patent Pictures:
Lawrence Williams patent November 2, 1897
USPTO pdf tiff
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Description:
The hook jaw passes through a slot in the handle; a coil spring works to close the jaw.

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