US Patent: 728,945
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| Ratchet Pipe Wrench
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Patentee:
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| Joseph Levy (exact or similar names) - Verdigris, NE |
| USPTO Classifications: |
| 81/99 |
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Patent Dates:
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| Applied: |
May 16, 1901 |
| Granted: |
May 26, 1903 |
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Patent Pictures:
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1 | 2
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Joseph Levy patent May 26, 1903 |
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Stan Schulz
LEVY PIPE WRENCH from Feb. 2, 1905 IRON AGE (FLICKR)
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Description: |
| Hook jaw "self-adjust" with a spring to keep the hook jaw in "normal open" position. The patent drawing shows a coiled spring connecting the pivot bolt and swinging jaw. The wrench as produced has a projection on the back of the handle, with a secondary link to the swinging jaw and a compression spring which keeps the jaw "normally closed".
An early 1905 "new product announcement" listed a Chicago distributor, and pictured an example as produced; a known example has very small lettering that suggests Levy was the manufacturer.
The corresponding British patent is GB-190413621 (no. 13,621 of 1904). |
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