US Patent: 1,859,600
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| Friction Clutch Mechanism
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Patentee:
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| Jacob H. Prettyman (exact or similar names) - Marion, Marion County, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 04, 1930 |
| Granted: |
May 24, 1932 |
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Patent Pictures:
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1 | 2
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Jacob H. Prettyman patent May 24, 1932 - sheet 1 |
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Stan Schulz
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Description: |
| Reversible "roller ratchet." Several alternate constructions are shown and described. A 1932 newspaper article indicated Wright Tool & Forge intended to produce this wrench at Barberton, OH, with Mr. Prettyman supervising production. |
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