US Patent: 63,935
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| Improvement in Wrenches
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Patentee:
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| James A. Partridge (exact or similar names) - Lowell, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Apr. 16, 1867 |
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Patent Pictures:
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James A. Partridge Pat. April 16, 1867 |
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Stan Schulz
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Description: |
| The movable jaw has a lever which when depressed releases the adjusting screw's engagement with the movable jaw, allowing for rapid adjustment without generating wear on the adjusting screw or corresponding threads in the movable jaw.
This patent is referenced in William A. Heath's Nov. 4, 1879 patent (no. 221,305). |
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