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US Patent: 531,715
Wrench
Patentee:
Jacob C. Brown (exact or similar names) - Elmira, NY

USPTO Classifications:
81/128, 81/165

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
M. M. Borst
Chas. W. Marvin
L. A. Baker
M. H. Murphy

Patent Dates:
Applied: Mar. 23, 1894
Granted: Jan. 01, 1895

Patent Pictures:
Jacob C. Brown patent January 1, 1895
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Description:
The width of the body serves as leverage; the opening of the jaws is set by sliding in or out on tapered slots in the body. The adjustment is accomplished by a yoke operated by a screw.

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