US Patent: 76,536 - Improvement in Wrenches


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US Patent: 76,536

Improvement in Wrenches

Patentee:

E. A. Smead (exact or similar names) - Tioga, PA

USPTO Classifications:

81/141

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

J. W. Mister

P. R. Erichser

Patent Dates:
Granted:	Apr. 07, 1868

Patent Pictures:

E. A. Smead Pat. April 7, 1868

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Description:

A cam on a spring holds fine teeth on the inside of the sliding jaw in engagement with corresponding teeth on the main bar. The cam is to prevent the jaw slipping inadvertently.