US Patent: 447,377
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| Pipe Wrench
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Patentee:
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| Daniel P. Stanton (exact or similar names) - Warwick, RI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 05, 1890 |
| Granted: |
Mar. 03, 1891 |
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Patent Pictures:
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Daniel P. Stanton patent March 3, 1891 |
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Stan Schulz
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Description: |
| Applies the thumb screw type pivot adjustment of traditional adjustable pipe tongs to a swinging hook jaw "self-adjusting" pipe wrench. A spring holds the jaw closed. |
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