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US Patent: 76,536
Improvement in Wrenches
Patentee:
E. A. Smead - 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
USPTO pdf tiff
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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.

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