US Patent: 86,534 - Improvement in Screw-Wrench


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US Patent: 86,534

Improvement in Screw-Wrench

Patentee:

Charles Hall (exact or similar names) - New York, NY

USPTO Classifications:

81/148, 81/156

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

J. M. Dixon

A. Kinnier

J. W. Coombs

Patent Dates:
Granted:	Feb. 02, 1869

Patent Pictures:

Charles Hall Pat. Feb. 2. 1869

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Description:

A sliding wedge on the back side of the movable jaw allows lateral movement of the jaw to engage or disengage the threaded portion of the jaw from the adjusting screw.