US Patent: 132,789
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| Improvement in wrenches
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Patentee:
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| Quimby S. Backus (exact or similar names) - Millers Falls, MA |
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Patent Dates:
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| Granted: |
Nov. 05, 1872 |
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Patent Pictures:
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1 | 2
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Quimby S. Backus Pat. Nov. 5, 1872 |
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Stan Schulz
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Description: |
| "The nature of my invention consists in the construction and arrangement of a wrench, in which the movable jaw is held in place by friction produced by operation on the object..."
See the writeup on Backus accompanying patent 132,791.
A wood-handled example appeared in an October, 2012 Martin J. Donnelly auction, and an all-steel example with angled jaws appeared in a March 22, 2014 Donnelly auction. |
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