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US Patent: 80,237
Wrench
Improvement in Wrenches
Patentee:
George C. Taft (exact or similar names) - Worcester, MA

USPTO Classifications:
81/163

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James H. Bancroft
W. A. Williams
Patent Dates:
Applied: Dec. 04, 1866
Granted: Jul. 21, 1868
Antedated: Jul. 11, 1868

Patent Pictures:
George C. Taft Pat. July 11, 1868
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Description:
An adjusting screw with right and left-hand threads moves both jaws of an adjustable wrench.

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