US Patent: 876,927
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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: |
May 06, 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 Jan. 21, 1908 -- 876,925, 876,926, and this patent. This patent shares reversible jaw plates with pat. no. 876,926. The reversible jaw pieces were the main feature of Williams' VULCAN BIJAW chain wrenches which were introduced in spring, 1910. The inner face of the jaw plates has a different form of hooks.
Later modifications and improvements received patent nos. 1,146,119 and 1,146,120.
Arthur C. Fraser & Co. - patent attorneys
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