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US Patent: 457,050
Wrench
Patentee:
Daniel A. Kershner - Jonesborough, AR

USPTO Classifications:
81/148

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. S. Duvall
Chas. A. Ford
J. R. Smith
J. V. Bell

Patent Dates:
Applied: Mar. 25, 1891
Granted: Aug. 04, 1891

Patent Pictures:
Daniel A. Kershner patent August 4, 1891
USPTO pdf tiff
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Description:
A sliding wedge and lever hold the adjustment of a sliding jaw. The jaw has wedge-shaped teeth that mesh with corresponding teeth on the side pieces of the central shank.

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