US Patent: 172,854
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Wrench
Improvement in Tap-Wrenches
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Patentee:
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| John J. Grant (exact or similar names) - Hartford, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 16, 1875 |
| Granted: |
Feb. 01, 1876 |
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Patent Pictures:
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John J. Grant Patent February 1, 1876 |
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Stan Schulz
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Description: |
| The gripping jaws are actuated by ratchet action. The inside of the ratchet wheel has "tapered" flanges which engage slots in the gripping jaws, to close or open them. A spring-loaded pawl on one side provides the ratchet action. |
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