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US Patent: 145,263
Pipe-Wrenches
Patentee:
Henry B. Wheatcroft - New York, NY

USPTO Classifications:
81/99

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

Assignees:
J. Austin & Co. - New York, NY

Manufacturer:
J. Austin & Co. - New York, NY

Witnesses:
Chas. M. Higgins
Arthur C. Fraser
Jona. Austin

Patent Dates:
Applied: Sep. 25, 1873
Granted: Dec. 02, 1873

Patent Pictures: [ 1 | 2 ]
Henry B. Wheatcroft Pat. Dec. 2, 1873
USPTO pdf tiff
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Description:
The patent is a self-adjusting pipe wrench with a swinging hook jaw, and curved gripping face.

A January 29, 1874 "IRON AGE" item indicates J. Austin & Co. produced this wrench. An 1877 hardware supply catalog lists three sizes.

A known example is marked WHEATCROFT PATENT 1873. Another known example is marked WHEATCROFT'S PAT DEC. 2. 1873. They have a leaf spring at the "heel" of the swinging jaw to help keep it in the closed position.

This patent is noted in pat. no. 333,836.

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