US Patent: 331,951
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| Wrench
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Patentee:
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| Frank Sedwick Duell (exact or similar names) - Abington, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 14, 1885 |
| Granted: |
Dec. 08, 1885 |
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Patent Pictures:
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Frank Sedgwick Duell patent December 8, 1885 |
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Stan Schulz
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Description: |
| A screw with left- and right-hand threads adjusts the movable jaws. The spring-loaded pin that forms the ratchet pawl extends through the end of the handle, and can be rotated to reverse the ratchet action. |
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