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US Patent: 964,346
Wrench
Patentee:
George H. Watson (exact or similar names) - Marshall, MI

USPTO Classifications:
81/100

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench adjustment types : self-adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Blanche C. Crowley
Grayce E. Wall
Bertha Smith
H. E. Winsor
Patent Dates:
Applied: Aug. 10, 1909
Granted: Jul. 12, 1910

Patent Pictures:
George H. Watson Pat. July 12, 1910
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Description:
The self-adjusting pipe tongs has a movable pivot pin, and a spring-tensioned stud pushing the movable jaw into the work.

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