US Patent: 107,425
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| Improvement in Wrenches
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Patentee:
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| Henry Tregallas (exact or similar names) - Calumet, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Sep. 13, 1870 |
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Patent Pictures:
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Henry Tregallas Pat. Sept. 13, 1870 |
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Stan Schulz
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Description: |
| The handle tapers so the "fixed" jaw and movable jaw can be slid off. There are interchangeable smooth face (nut) and toothed face (pipe) jaws. The movable jaw slides and has rack teeth to engage rack teeth on the shank. Tregallas patented further evolution of this idea on Setp. 26, 1882 (pat. no. 265,188). |
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