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US Patent: 511,155
Pipe Wrench
Patentee:
Charles B. Merritt - Gouverneur, NY

USPTO Classifications:
81/102, 81/186

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
G. S. Elliott
E. W. Johnson
Arthur W. Orvis
John F. Harder

Patent Dates:
Applied: Aug. 31, 1893
Granted: Dec. 19, 1893

Patent Pictures:
Charles B. Merritt patent December 19, 1893
USPTO pdf tiff
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Description:
The hook jaw slides in a yoke that pivots on a lug extending from the main shank. Toothed faces on the jaws enable a grip on pipe or nuts.

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