US Patent: 55,066
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Improvement in Screw-Wrenches
Improved Hand-Wrench
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Patentee:
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| John L. Crist (exact or similar names) - Harrisburg, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 29, 1866 |
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Patent Pictures:
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John L. Crist Pat. May 29, 1866 |
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Stan Schulz
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Description: |
| This quick-adjust nut wrench uses a rotating ferule with a relieving notch to hold and release the jaws. The jaw shanks have interlocking teeth. A spring stop on the handle keeps the rotating ferule in place either in the locked or adjusting positions. |
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