US Patent: 166,514
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| Wrenches
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Patentee:
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| Thomas F. Dunn (exact or similar names) - Saccarappa, ME |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 22, 1875 |
| Granted: |
Aug. 10, 1875 |
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Patent Pictures:
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Thomas F. Dunn Pat. August 10, 1875 |
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Stan Schulz
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Description: |
| The patent is for the slot in the length of the shank which allows a second wrench to be inserted to provide leverage. One or more of the ends may have multiple sizes, although that feature is not part of the patent. |
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