US Patent: 1,127,100


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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. - Philadelpia, PA

Witnesses:

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

Patent Pictures:

Myer M. Shuster patent February 2, 1915

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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.