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US Patent: 370,848
Wrench
Patentee:
Arthur J. Barber (exact or similar names) - Auburn, NY

USPTO Classifications:
81/159, 81/170

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

Assignees:
Arthur J. Barber - Auburn, NY
Charles D. Gaylord - Auburn, NY

Manufacturer:
Not known to have been produced

Witnesses:
E. G. SIggers
C. E. Doyle
F. L. Allen
C. J. Williams
Patent Dates:
Applied: May 17, 1887
Granted: Oct. 04, 1887

Patent Pictures:
Arthur J. Barber patent October 4, 1887
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Description:
The knob at the end of the handle turns a rod that extends through the length of the wrench, and which is threaded for part of its length to adjust the movable jaw.

The movable jaw has only partial threads to engage the adjustment screw.

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