US Patent: 448,958


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US Patent: 448,958

Wrench

Patentees:

Robert Haberthur (exact or similar names) - New York, NY

John M. Stowell (exact or similar names) - New York, NY

USPTO Classifications:

81/103, 81/135

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

C. Sedgwick

F. McArdle

J. F. Acker

Patent Dates:
Applied:	Apr. 11, 1890
Granted:	Mar. 24, 1891

Patent Pictures:

Robert Habethur and John M. Stowell patent March 24, 1981

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Description:

Rack teeth on the movable jaw engage rack teeth on a spring-loaded adjusting lever. The jaws have teeth and parallel faces making the wrench suitable for pipe or nuts.