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US Patent: 459,241
Wrench
Patentee:
Thomas Sherk - Fredonia, KS

USPTO Classifications:
81/137

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. J. Schwartz
C. S. Frye
J. M. Kennedy
M. E. Kennedy

Patent Dates:
Applied: Jan. 02, 1891
Granted: Sep. 08, 1891

Patent Pictures:
Thomas Sherk patent September 8, 1891
USPTO pdf tiff
Google Patents
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Description:
The shank has threads a third of its circumference. The adjusting nut has an internal stop to prevent it from making a complete revolution.

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