US Patent: 232,581
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| Wrench
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Patentee:
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| Duncan Weir (exact or similar names) - Marshall, TX |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 02, 1880 |
| Granted: |
Sep. 21, 1880 |
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Patent Pictures:
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Duncan Weir patent September 21, 1880 |
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Stan Schulz
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Description: |
| The pivoting handle has gear teeth that engage rack teeth on the under side of the sliding jaw face in the "fixed" jaw. This arrangement tightens or loosens the wrench grip for any given adjustment. |
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