US Patent: 345,567
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| Pipe Wrench
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Patentee:
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| Samuel J. Benson (exact or similar names) - Boulder Creek, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 06, 1886 |
| Granted: |
Jul. 13, 1886 |
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Patent Pictures:
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Samuel J. Benson patent July 13, 1886 |
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Stan Schulz
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Description: |
| The movable jaw has a roller grip forced against the work piece by a spring. A cam lever locks the base of the movable jaw, and unlocks to free it to be adjusted by a worm. |
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