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US Patent: 910,890
Wrench
Patentee:
James F. Wright - Philadelphia, PA

USPTO Classifications:
81/146

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches
wrenches : nut wrenches

Assignees:
None

Manufacturer:
Wright Wrench Co. - Canton, OH
Wright Wrench & Forging Co. - Tacoma, WA
Wright Wrench & Forging Co. - Canton, OH

Witnesses:
W. N. Woodson
Thomas J. Ellis
Charles Wm. Dettrey

Patent Dates:
Applied: Nov. 18, 1907
Granted: Jan. 26, 1909

Patent Pictures:
James F. Wright Pat. Jan. 26, 1909
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Description:
The patent's focus is the structure of the gripping surface inside the movable jaw, the tension spring tending to keep the gripping surface engaged with the rack in the main shank, and the rack recessed in the main shank. This patent and Ash and Stewart's March 15, 1904 patent (no. 754,633), were used for quick adjust nut wrenches produced by the Wright Wrench Co.

Contemporary advertisements stress the wrench could be held and adjusted by one hand, and the rack was replaceable.

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