US Patent: 326,837
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| Wrench
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Patentee:
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| Dennis S. Blue (exact or similar names) - Fremont, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 29, 1884 |
| Granted: |
Sep. 22, 1885 |
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Patent Pictures:
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Dennis S. Blue patent September 22, 1885 |
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Stan Schulz
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Description: |
| The base of the movable jaw has a bolt with with a flat side as wide as the wrench shank. The remainder is threaded to engage teeth on the main shank. The end of the bolt has a thumb lever to turn it. In use, the bolt is turned to allow the jaw to slide freely, and once engaged with the work piece, the bolt is tightened to have the jaws grip firmly. |
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