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US Patent: 37,395
Wrench
Improved Self-Adjusting Pipe Tongs
Patentee:
Henry Getty - Brooklyn, NY

USPTO Classifications:
81/99

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. Turner
A. Sidney Doane

Patent Dates:
Granted: Jan. 13, 1863

Patent Pictures:
Henry Getty Pat. Jan. 13, 1863
USPTO pdf tiff
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Description:
The patent is for a spring-tensioned self-adjusting pipe wrench. The back of the "hook jaw" extends toward the handle to form a thumb lever to open the jaw against the pressure of the tension spring.

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