US Patent: 349,249
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| Wrench
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| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 30, 1886 |
| Granted: |
Sep. 14, 1886 |
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Patent Pictures:
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Alfred H. Criley patent September 14, 1886 |
USPTO pdf tiff
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Description: |
| A guide-pin in the movable jaw has a compression spring to push the jaw away from the main shank. Teeth on the base of the movable jaw engage rack teeth on the main shank. A cam lever on the movable jaw pulls the sets of teeth together to hold the adjustment. |
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