US Patent: 171,935
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| Wrench
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Patentee:
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| William Hawkins (exact or similar names) - Birmingham, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 30, 1875 |
| Granted: |
Jan. 11, 1876 |
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Patent Pictures:
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William Hawkins Pat. January 11, 1876 |
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Stan Schulz
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Description: |
| The movable jaw adjusts by a conventional looking side-screw, except that the base of the screw has a gear, connecting to another gear on the handle. The handle turns to drive that gear. The gear ratio provides more turning force to the adjusting screw. |
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