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US Patent: 1,127,100
Wrench
Patentee:
Myer M. Shuster - Philadelphia, PA

USPTO Classifications:
81/111, 81/116, 81/129.5, 81/165

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

Assignees:
None

Manufacturer:
Clip_Bar Mfg. Co. - Philadelphia, PA

Witnesses:
L. Douville
P. F. Nagle
C. D. McVay
E. Hayward Fairbanks

Patent Dates:
Applied: Feb. 16, 1914
Granted: Feb. 02, 1915

Patent Pictures:
Myer M. Shuster patent February 2, 1915
USPTO pdf tiff
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Description:
The wrench is a screw-adjust with a spring to relax the jaw grip to enable a type of ratchet action. The auxiliary lever handle slides a stop against the adjusting worm, disabling the spring-tension feature. Marketed as the SHUSTER SPEED WRENCH.

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