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US Patent: 573,732
Ratchet Wrench
Patentee:
Edward T. Warn - Maiden, MT

USPTO Classifications:
81/170, 81/62

Tool Categories:
wrenches : ratchet wrenches

Assignees:
Edward T. Warn - Maiden, MT
Frank Pick - Maiden, MT
Charles Drosch - Maiden, MT

Manufacturer:
Not known to have been produced

Witnesses:
L. N. Legendre
C. R. Ferguson
Rice Dougherty
Ben. V. Dougherty

Patent Dates:
Applied: Aug. 11, 1896
Granted: Dec. 22, 1896

Patent Pictures:
Edward T. Warn patent December 22 ,1896
USPTO pdf tiff
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Description:
Adjustable jaw ratchet wrench. The component parts of the ratchet head are contained within an enclosing band. The jaw adjustment is accomplished by a circular rack and pinion which can be turned by a second pinion connected to a shaft extending to the end of the handle. A compression spring holds this second pinion out of engagement with with circular rack.

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