US Patent: 132,823
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| Improvement in Wrenches
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Patentee:
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| Pierre L. Gibbs (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Nov. 05, 1872 |
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Patent Pictures:
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Pierre L. Gibbs. Pat. Nov. 5, 1872 |
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Stan Schulz
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Description: |
| The ratchet pawl works directly on the corners of nuts without an intermediate socket. The wrench was designed for the purpose of tightening and loosening fish-plate bolts on railroads. |
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