US Patent: 317,924
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| Wrench
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Patentee:
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| Amos Call (exact or similar names) - Springfield, MA |
| USPTO Classifications: |
| 81/93 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 13, 1884 |
| Granted: |
May 12, 1885 |
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Patent Pictures:
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Amos Call patent May 12, 1885 |
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Stan Schulz
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Description: |
| The patent describes a combination pipe and nut wrench comprised of separate pipe and nut jaws sliding on a common shank, adjusted by a nut or sleeve on the shank. The only difference between this design and the parallel patent (no. 317,923) is that the jaws have a connecting pivot and only one jaw is connected to the adjusting screw. |
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