US Patent: 391,532
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Wrench
Improved Socket-Wrench
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Patentee:
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| Joseph G. Hoffman (exact or similar names) - Ste. Genevieve, MO |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 08, 1888 |
| Granted: |
Oct. 23, 1888 |
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Patent Pictures:
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Joseph G. Hoffman patent October 23, 1888 |
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Stan Schulz
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Description: |
| An adjustable brace / socket wrench. The sliding jaws are opened by the compression spring, and closed by the sliding pivot pin structure which can be set in one of a series of holes corresponding with pre-set sizes. |
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