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US Patent: 26,951
Improved Gripping Wrench
Patentee:
John E. Neill - U.S. Navy,

USPTO Classifications:
81/97

Tool Categories:
wrenches : nut wrenches
wrenches : wrench components : wrench jaw components

Assignees:
C. S. Pomeroy - New York, NY

Manufacturer:
Windsor Mfg. Co. - Windsor, VT

Witnesses:
Geo. Denison
Daniel Pomeroy

Patent Dates:
Granted: Jan. 24, 1860

Patent Pictures: [ 1 | 2 ]
John E. Neill patent January 24, 1860
USPTO pdf tiff
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Description:
The adjustable jaw has a pivot pin between the adjusting nut and the jaw segment. The adjustable jaw has a "roughened" face, an elongated slot to allow for extra play on the main shank, and a spring that holds the jaw in the "extended" position. The fixed jaw also has gripping teeth.

One known 10 inch example has smooth faces on both jaws; a 12 inch example has the pipe gripping teeth.

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