US Patent: 641,782
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Wrench
Wrench For Grain-Separator Cylinders
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Patentee:
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| Frank Kostlan (exact or similar names) - Traer, IA |
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Patent Dates:
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| Applied: |
Feb. 24, 1899 |
| Granted: |
Jan. 23, 1900 |
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Patent Pictures:
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Frank Kostlan patent Jan. 23, 1900 |
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Stan Schulz
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Description: |
| Gear drive in a case, with handle formed of pipe and fittings. A smaller gear driving a larger gear provides mechanical advantage in tightening and loosening nuts.
This design appears in a June 1902 ad for Wood's Hawkeye Cylinder Wrench, produced by Wood Bros. Steel Self-Feeder Co., Des Moines, IA. |
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