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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.

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