US Patent: 41,768
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| Nut Wrench
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Patentee:
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| George W. Griswold (exact or similar names) - Abington, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Mar. 01, 1864 |
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Patent Pictures:
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George W. Griswold Pat. Mar. 1, 1864 |
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Stan Schulz
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Description: |
| The movable jaw has an internal spring-loaded roller that wedges against the back of the bar to hold the adjustment. The back of the movable jaw has an opening to reach in to release the roller. |
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