US Patent: 589,681
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| Wrench
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Patentee:
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| Henry Althoff (exact or similar names) - Melrose, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 03, 1897 |
| Granted: |
Sep. 07, 1897 |
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Patent Pictures:
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Henry Althoff patent September 7, 1897 |
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Stan Schulz
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Description: |
| The movable jaw slides on the main shank, with a spring catch engaging rack teeth on the main shank. One side of the movable jaw has a flat jaw face for nuts; the other side has a screw-adjustable grip with teeth. The corresponding fixed jaws are flat for nuts and notched with teeth to grip pipe. |
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