US Patent: 212,795
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| Pipe and Nut Wrench
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Patentee:
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| Daniel Fisher (exact or similar names) - Oil City, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 10, 1879 |
| Granted: |
Mar. 04, 1879 |
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Patent Pictures:
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Daniel Fisher patent March 4, 1879 |
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Stan Schulz
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Description: |
| The adjustable jaw has a curved surface that matches the curved surface of pipe and provides two bearings for square nuts. The main focus of the patent is the "bit" in the opposite jaw. It can be rotated and turned over to provide eight biting edges before needing to be replaced or sharpened. This feature is carried over from Fisher's May 21, 1878 patent (no. 203,822). |
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