US Patent: 256,351
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| Ratchet Monkey Wrench
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Patentee:
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| William F. McGregor (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 10, 1881 |
| Granted: |
Apr. 11, 1882 |
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Patent Pictures:
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William F. McGregor patent April 11, 1882 |
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Stan Schulz
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Description: |
| The adjusting screw for the jaws has left- and right-hand thread. The movable jaws and adjusting screw are mounted in a large ratchet head. The ratchet action is reversible, with a middle position that locks the head from rotation. |
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