US Patent: 876,926
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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: |
| The focus of this patent is the reversible double-ended jaw plates. When one set of jaw teeth is worn, the jaws can be reversed to use the other set. The chain hooks on the inner face are similar to those patented in Amborn's parallel patent no. 876,925, and differ from those in 876,927. The "double-ended" jaw pieces in the patent resemble those used in Williams' VULCAN BI-JAW chain wrenches introduced in spring, 1910.
Amborn modifications to this design to adapt it to "cable chain" are described in pat. no. 985,766.
Arthur C. Fraser & Co. - patent attorneys
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