US Patent: 633,578
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| Monkey Wrench
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Patentee:
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| Richard F. Downey (exact or similar names) - Menominee, Menominee County, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 10, 1898 |
| Granted: |
Sep. 26, 1899 |
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Patent Pictures:
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Richard F. Downey patent Sept. 26, 1899 |
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Stan Schulz
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Description: |
| The hinged handle acts as a cam to slide the adjusting nut and its base tighter against a nut. The internal pin and spring return the handle to the "straight" position when pressure is released.
R. B. Wheeler & Co. - patent attorneys |
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