US Patent: 606,690
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| Wrench
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Patentee:
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| Thomas Spriggs (exact or similar names) - Little River, KS |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 26, 1897 |
| Granted: |
Jul. 05, 1898 |
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Patent Pictures:
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Thomas Spriggs patent July 5, 1898 |
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Stan Schulz
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Description: |
| Adjustable jaw wrench. The adjustment may be by worm and rack threads, or by sliding shank and set screw. The movable jaw may be smooth for nuts, or toothed to grip pipe. |
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