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US Patent: 603,575
Adjustable Wrench
Patentee:
Wallace O. Parker (exact or similar names) - Norman, Oklahoma Territory

USPTO Classifications:
81/133

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Chas. E. Brock
W. J. La Varre
W. L. Maupin
T. M. Upshaw

Patent Dates:
Applied: Jun. 24, 1897
Granted: May 03, 1898

Patent Pictures:
Wallace O. Parker patent May 3, 1898
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Description:
A toothed gear wheel in the movable jaw meshes with gear teeth on the main shank. A spring-loaded toothed lever catches a notch in the gear wheel to hold the adjustment.

The arrangement facilitates one-handed use.

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