US Patent: 876,925
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| Chain Pipe Wrench
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Patentee:
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| George Amborn (exact or similar names) - New York, NY |
| USPTO Classifications: |
| 81/70 |
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Patent Dates:
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| Applied: |
Mar. 08, 1907 |
| Granted: |
Jan. 21, 1908 |
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Patent Pictures:
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George Amborn patent January 21, 1908 |
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Stan Schulz
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Description: |
| Amborn received three interrelated patents on January 21, 1908 -- this patent, 876,926, and 876,927. The patent date appears on some models of Williams' VULCAN chain wrenches. The focus of this patent is the attachment point for the free end of the chain. The hook point on the inner faces of the jaws is deep enough to retain the chain.
Arthur C. Fraser & Co. - patent attorneys
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