US Patent: 457,050
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| Wrench
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Patentee:
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| Daniel A. Kershner (exact or similar names) - Jonesborough, AR |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 25, 1891 |
| Granted: |
Aug. 04, 1891 |
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Patent Pictures:
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Daniel A. Kershner patent August 4, 1891 |
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Stan Schulz
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Description: |
| A sliding wedge and lever hold the adjustment of a sliding jaw. The jaw has wedge-shaped teeth that mesh with corresponding teeth on the side pieces of the central shank. |
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