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US Patent: 67,818
Improvement in Wrenches
Patentee:
George C. Taft (exact or similar names) - Worcester, MA

USPTO Classifications:
81/171

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

Assignees:
None

Manufacturer:
Unknown

Witnesses:
William F. McNamara
Alex. F. Roberts

Patent Dates:
Granted: Aug. 13, 1867

Patent Pictures: [ 1 | 2 ]
George C. Taft patent Aug. 13, 1867
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Description:
The "anchor" point of the adjusting screw in the fixed jaw is a "swivel".

A wrench having the features described in this patent and with "PAT'D .... 1867" visible from the mostly obliterated markings is known. It has "ACME" type threads on the adjusting screw.

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