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US Patent: 425,647
Wrench
Patentee:
Thomas Young - Bradford, PA

USPTO Classifications:
81/128, 81/141, 81/143, 81/177.1, 81/311, 81/361, 81/391, 81/420

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
L. C. Hills
Chas. Schiller
C. J. Curtis
C. L. Casterline

Patent Dates:
Applied: Jun. 25, 1889
Granted: Apr. 15, 1890

Patent Pictures:
Thomas Young patent April 15, 1890
USPTO pdf tiff
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Description:
Quick-adjust sliding-jaw wrench with provision for a shiftable rack in the handle that allows for finer adjustment. The second set of jaws is to allow for places where the handle of the clamping cam would interfere with the wrench's use.

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