US Patent: 132,823 - Improvement in Wrenches


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US Patent: 132,823

Improvement in Wrenches

Patentee:

Pierre L. Gibbs (exact or similar names) - Chicago, IL

USPTO Classifications:

81/61, 81/97

Tool Categories:

wrenches : ratchet wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Granted:	Nov. 05, 1872

Patent Pictures:

Pierre L. Gibbs. Pat. Nov. 5, 1872

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Description:

The ratchet pawl works directly on the corners of nuts without an intermediate socket. The wrench was designed for the purpose of tightening and loosening fish-plate bolts on railroads.