US Patent: 149,840
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| Wrenches
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Patentee:
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| William H. Crittendon (exact or similar names) - Grafton, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 13, 1874 |
| Granted: |
Apr. 21, 1874 |
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Patent Pictures:
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William H. Crittendon Pat. April 21, 1874 |
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Stan Schulz
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Description: |
| The threaded rod portion of the sliding jaw is clamped between a threaded stud on the main shank and a release lever. The handle and ferule rotate to lock and unlock the release lever. |
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