US Patent: 455,183
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| Wrench
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Patentee:
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| James Dushane (exact or similar names) - South Bend, IN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 22, 1890 |
| Granted: |
Jun. 30, 1891 |
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Patent Pictures:
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James Du Shane patent June 30, 1891 |
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Stan Schulz
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Description: |
| Screw adjust nut wrench with lever handle and toggle linkage to provide extra jaw movement to tighten the grip. The lever linkage may include springs to open the jaws when the grip on the lever handle is relaxed. |
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