US Patent: 414,772
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| Monkey Wrench
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Patentee:
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| William H. Kaltenbeck (exact or similar names) - Stamford, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 21, 1889 |
| Granted: |
Nov. 12, 1889 |
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Patent Pictures:
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William H. Kaltenbeck patent November 12, 1889 |
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Stan Schulz
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Description: |
| The shank of the movable jaw is square with a lower elliptical section threaded on the "narrow" edges. The handle rotates around the base of the "bottom" jaw and has an internal nut with an elliptical opening threaded on the "broad" sides. The handle attaches to the "bottom" jaw by pins that engage a circular groove in the extended base of the bottom jaw. |
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