US Patent: 331,053
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| Wrench
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Patentee:
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| Nathan H. Griffith (exact or similar names) - Providence, RI |
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Patent Dates:
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| Applied: |
Jul. 30, 1885 |
| Granted: |
Nov. 24, 1885 |
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Jeff Joslin
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Description: |
| "My improvement is more especially designed as a carriage-wrench, and it may also be advantageously employed for holding a boring-bit or other tool; and it consists in the improved combination of a screw with the expanding jaws, and also in the combination therewith of a holding-shoe..."In 2005 an example sold at auction for $1870. Keep in mind that prices will vary greatly with condition. |
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