US Patent: 296,942
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| Wrench
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Patentee:
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| James Du Shane (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. 30, 1883 |
| Granted: |
Apr. 15, 1884 |
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Patent Pictures:
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James Du Shane patent April 15, 1884 |
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Stan Schulz
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Description: |
| The wrench has a two-part screw adjustment. The smaller screw works similarly to a "typical" adjusting screw, except that its range of motion is less than the overall adjustment range of the wrench. The larger nut has interrupted threads so that when the gap in its threads align with the main bar of the wrench the movable jaw is free to slide. |
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