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US Patent: 52,930
Improvement in Wrenches
Patentee:
William Morehouse - Buffalo, NY

USPTO Classifications:
81/127

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

Assignees:
J. Fraser - Buffalo, NY
William Morehouse - Buffalo, NY

Manufacturer:
Unknown

Witnesses:
W. H. Sherman
R. H. Danforth

Patent Dates:
Granted: Feb. 27, 1866

Patent Pictures:
William Morehouse Pat. Feb. 27, 1866
USPTO pdf tiff
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Description:
This self-adjusting wrench operates by teeth cut on the interior end of the swinging handle engaging rack teeth cut on the movable jaw. Unmarked wrenches conforming to this design are known. In the absence of advertising or catalog listings, the manufacturer is a matter of surmise.

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