US Patent: 564,816
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| Wrench
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Patentees:
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| Robert Aldrich (exact or similar names) - Millville, MA |
| John V. Chamberlin (exact or similar names) - Worcester, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 18, 1895 |
| Granted: |
Jul. 28, 1896 |
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Patent Pictures:
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Robert Aldrich and John V. Chamberlin patent July 28, 1896 |
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Stan Schulz
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Description: |
| A spring-tensioned wedging roller holds the adjustment. Although the drawing shows application to a nut wrench, the specifications note the adjusting means could also be applied to pipe wrenches. |
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