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US Patent: 1,258,361
Automatic Monkey Wrench
Patentee:
Joseph P. Ruffeno - Opelousas, LA

USPTO Classifications:
81/145, 81/186

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: May 29, 1917
Granted: Mar. 05, 1918

Patent Pictures:
Joseph P. Ruffeno patent March 5, 1918
USPTO pdf tiff
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Description:
The wrench consists of a handle with internal compression spring and pipe gripping jaw, an extended shank with a terminal fixed jaw, and an intermediate movable jaw with a flat face and a pipe gripping face. The movable jaw has a secondary shank with rack teeth, and which bears against the compression spring. A pivoting latch engages the rack to hold the adjustment.

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