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US Patent: 103,653
Wrench
Patentee:
Turner C. Purington - Lincoln, CA

USPTO Classifications:
81/170, 81/177.1

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

Assignees:
A. Mayoux - Lincoln, CA
Turner C. Purington - Lincoln, CA

Manufacturer:
Not known to have been produced

Witnesses:
David R. Smith
H. S. Tibbey
C. W. M. Smith

Patent Dates:
Granted: May 31, 1870

Patent Pictures:
T. C. Purington Pat. May 31, 1870
USPTO pdf tiff
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Description:
The adjusting knurl is held firmly between the handle ferule and "steps" on the shank. The adjusting threads are concealed within the movable jaw, and thus protected from dirt and damage.

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