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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
USPTO (New site tip)
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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.

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