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US Patent: 16,997
Wrench
Improved Adjustable Pincer-Wrench
Patentee:
Ezra Ripley - Troy, NY

USPTO Classifications:
7/125, 7/139, 81/131

Tool Categories:
wrenches : wrench combination tools
wrenches : nut wrenches
wrenches : pliers type wrenches

Assignees:
None

Manufacturer:
Ezra Ripley - Troy, NY

Witnesses:
Ed. H. Uniac
A. F. Park

Patent Dates:
Granted: Apr. 07, 1857

Patent Pictures: [ 1 | 2 ]
Ezra Ripley patent April 7, 1857
USPTO pdf tiff
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Description:
Malleable iron 'levers' interlock to form an adjustable open end wrench. The drawings and specifications describe several options for attaining the interlock. Other tool functions shown in the drawing are not part of the patent. Some examples marked "E. Ripley's Patent April 7, 1857," some are unmarked. The variants shown in the 2nd illustration are copied from "Antique and Unusual Wrenches," by Schulzes. Later Ripley patents (e.g. 29,620) enhanced and expanded the tool's functions.

Cortland Ball's Sept. 9, 1862 wrench / hammer patent (no. 36,389) and A. D. Crosby's combination tool (no. 317,738) used a similar adjusting means.

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