US Patent: 54,471
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| Improvement in Wrenches
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Patentee:
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| C. C. Webber (exact or similar names) - Springfield, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 01, 1866 |
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Patent Pictures:
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C. C. Webber Pat. May 1, 1866 |
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Stan Schulz
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Description: |
| The patent uses two adjustment screws. The first screw moves an adjustable jaw in the customary manner. The second screw has a coarse thread engaging the handle, and a fine thread engaging the second head for additional gripping power. |
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