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US Patent: 1,380,794
Monkey Wrench
Patentee:
William Gordon (exact or similar names) - Union, NJ

USPTO Classifications:
81/139

Tool Categories:
wrenches : nut wrenches
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Gordon Automatic - Union, NJ
Automatic Wrench Corp. of America - West New York, NJ

Witnesses:
Angelo Caponegro
Edward Hollander

Patent Dates:
Applied: Oct. 20, 1919
Granted: Jun. 07, 1921

Patent Pictures: [ 1 | 2 ]
William Gordon Patent June 7, 1921
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Gordon Automatic - edited (FLICKR)
Description:
The quick-adjust action uses multiple toothed "levers" that engage a rack on the sliding jaw. Each of the "levers" has a slightly different length from the common pivot point. The movable jaw is pulled into engagement by the interior tension spring, and the tooth on the lever closest to the final position engages the rack tooth to hold the adjustment.

A "monkey wrench" version of GORDON AUTOMATIC outwardly resembling this patent and an adjustable open end wrench version (see patent no. 1,501,903) were advertised in a full-page ad in Sept. 27, 1923 AMERICAN MACHINIST. A February 1923 write-up in MACHINERY also include a pipe wrench version (see pat. no. 1,618,820) not included in the September 1923 piece.

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