US Patent: 139,622
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Wrenches
Improvments in Monkey Wrenches
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| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 19, 1872 |
| Granted: |
Jun. 03, 1873 |
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Patent Pictures:
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Smith & Lee Pat. June 3, 1873 |
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Stan Schulz
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Description: |
| The handle attached to the movable jaw generates a combination of rack and wedge action to move the jaw and hold the adjustment. The back side of the shank has fine teeth that engage similar teeth inside the frame of the movable jaw.
Improved by patent no. 145,953. |
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