US Patent: 391,588
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| Wrench
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Patentee:
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| Caleb S. De Witt (exact or similar names) - Lockport, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 21, 1887 |
| Granted: |
Oct. 23, 1888 |
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Patent Pictures:
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Caleb S. De Witt patent October 23, 1888 |
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Stan Schulz
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Description: |
| Turning the end of the handle adjusts the movable jaw. A couple of lugs on the end piece of the handle engage a groove in the fixed portion of the handle. The exterior of the handle is knurled, and a hole allows for insertion of a pin for a lever handle. A wrench constructed in this fashion and in the proportions shown in the drawing would be apt to bend in the shank. |
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