US Patent: 803,942
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| Pipe Wrench
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Patentee:
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| John H. Vinton (exact or similar names) - Boston, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 05, 1905 |
| Granted: |
Nov. 07, 1905 |
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Patent Pictures:
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John H. Vinton patent Nov. 7, 1905 |
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Stan Schulz
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Description: |
| Pipe wrench adaptation of an "auto monkey wrench" style adjustable wrench. The gripping surface on the movable jaw swings on a pivot and tends to move "out" by the pressure of a compression spring. |
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