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US Patent: 178,408
Wrench
Patentee:
Joseph N. Byington (exact or similar names) - Winona, MN

USPTO Classifications:
81/163

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. H. Bates
George E. Moham
C. G. Maybury
Wm. B. Phelps

Patent Dates:
Applied: Apr. 15, 1876
Granted: Jun. 06, 1876

Patent Pictures:
Joseph N. Byington Pat. June 6, 1876
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Description:
A left- and right-hand threaded screw threads into the movable jaw and base on the main stock. The nut which turns the screw is free to slide over part of the screw. The inside of the nut has a lug, and the screw has a corresponding slot for a portion of its length.

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