US Patent: 203,822
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| Pipe-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: |
Apr. 08, 1878 |
| Granted: |
May 21, 1878 |
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Patent Pictures:
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Daniel Fisher patent May 21, 1878 |
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Stan Schulz
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Description: |
| The patented features are the replaceable wear plate and the gripping bit which has eight potential biting edges before needing to be sharpened or replaced.
The gripping bit is repeated in Fisher's March 4, 1879 patent (no. 212,795). |
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