US Patent: 2,441,144
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| Wrench Provided With Cam-Actuated Self-Tightening Jaws
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Patentee:
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| Roy L. Gregory (exact or similar names) - Everett, WA |
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Patent Dates:
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| Applied: |
May 29, 1945 |
| Granted: |
May 11, 1948 |
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Patent Pictures:
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Roy L. Gregory patent May 11, 1948 |
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Stan Schulz
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Description: |
| The action can be seen by looking at the drawings. A known example marked GREGORY DESHANE MFG. CO. PAT. PEND. does not have the interchangeable jaw surfaces, and the "tail" on which the handle cam bears is blunt rather than tapered.
The specifications cite one French patent and U.S. patent nos. 294,642, 496,753, 657,391, 899,197, 1,215,640, 1,361,923, and 1,845,400 as relevant prior art.
DeShane Mfg. was at Seattle, WA. |
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