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US Patent: 504,232
Wrench
Patentee:
George McKercher (exact or similar names) - Jonesville, MI

USPTO Classifications:
81/94, 81/99

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches
wrenches : wrench components : wrench jaw components
wrenches : pipe and nut combination wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Arthur L. Bryant
Wm. C. Dashiell
C. V. Burnett
Wesley Burnett
Patent Dates:
Applied: Jan. 07, 1893
Granted: Aug. 29, 1893

Patent Pictures:
George McKercher patent August 29, 1893
USPTO (New site tip)
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Description:
The main feature of the patent is the replaceable gripping surfaces for both jaws.

McKercher continued working on wrench designs, and produced a pipe wrench based on patent nos. 643,522 and 729,504.

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