US Patent: 55,109 - Improvement in Screw-Wrenches


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US Patent: 55,109

Improvement in Screw-Wrenches

Patentee:

Joel C. Jackson (exact or similar names) - Rochester, NY

USPTO Classifications:

81/166

Tool Categories:

wrenches : wrench adjustment types : screw adjust wrenches

wrenches : nut wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

George B. Smith

I. B. Dewey

Patent Dates:
Applied:	Mar. 31, 1866
Granted:	May 29, 1866

Patent Pictures:

J. C. Jackson Pat. May 29, 1866

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Description:

A rotating adjusting nut engages threads on an extension of the moveable jaw. The threaded portion of the movable jaw slides in a recess in the shank.