US Patent: 300,127 - Sliding Jaw Wrench


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US Patent: 300,127

Sliding Jaw Wrench

Patentee:

William H. Ratcliff (exact or similar names) - 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

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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.