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US Patent: 300,127
Sliding Jaw Wrench
Patentee:
William H. Ratcliff - Middleborough, MA

USPTO Classifications:
81/183

Tool Categories:
wrenches : wrench components : pipe jaw attachments for wrenches
wrenches : pipe and nut combination wrenches

Assignees:
William H. Ratcliff - Middleborough, MA
George S. Gates - Athol, MA

Manufacturer:
Not known to have been produced

Witnesses:
Chas. S. Gooding
Sylvenus Walker
W. R. Marble

Patent Dates:
Applied: Jan. 24, 1884
Granted: Jun. 10, 1884

Patent Pictures:
William H. Ratcliff patent June 10, 1884
USPTO pdf tiff
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Description:
The adjusting nut is inset in the movable jaw. The primary focus of the patent is the pivoting gripping roll which enable the wrench to grip pipe and other round objects. The pivot for the gripping roll frame is held by a coil spring.

Corresponding British patent GB-188412872 was registered Sept. 27, 1884.

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