US Patent: 215,479
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| Carriage-Wheel Wrench
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Patentee:
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| Nelson R. Pratt (exact or similar names) - Dover South Mills, ME |
| USPTO Classifications: |
| 81/75 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 11, 1878 |
| Granted: |
May 20, 1879 |
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Patent Pictures:
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Nelson E. Pratt patent May 20, 1879 |
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Stan Schulz
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Description: |
| The wrench locks the axle nut to the wheel. The inner set of jaws clamps to the axle nut. The outer set of jaws clamps to the outside of the hub, and has cushioned jaw surfaces so as to not damage the hub's finish. |
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