US Patent: 542,012
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| Pipe Wrench
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Patentee:
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| Charles L. Dunham (exact or similar names) - Centre View, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 19, 1895 |
| Granted: |
Jul. 02, 1895 |
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Patent Pictures:
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Charles L. Dunham patent July 2, 1895 |
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Stan Schulz
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Description: |
| A form of tongs with a "wrap-around" jaw structure that pivots from the handle, and is clamped and released by lever action of the handle. The gripping bit can be removed, rotated to expose a new edge, and sharpened.
Improvement on the January 11, 1876 W. Crumbie patent no. 171,999. Dunham's later patents ( no. 656,154 on August 14, 1900 and no 705,742 on July 29, 1902) represent different approaches. |
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