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US Patent: 627,371
Pipe Wrench
Patentee:
Robert Willis - New York, NY

USPTO Classifications:
81/64

Tool Categories:
wrenches : pipe wrenches : chain and strap wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. A. Brophy
C. R. Ferguson
Everard Bolton Marshall

Patent Dates:
Applied: Apr. 12, 1899
Granted: Jun. 20, 1899

Patent Pictures:
Robert Willis patent June 20, 1899
USPTO pdf tiff
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Description:
Strap wrench with a couple of alternate modes of clamping the strap. One mode uses a wedge bar; another mode uses the handle as the clamping wedge. In both modes, the strap is folded double at the clamped end.

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