US Patent: 570,214
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| Chain Wrench
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Patentee:
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| George Amborn, Jr. (exact or similar names) - Brooklyn, NY |
| USPTO Classifications: |
| 81/70 |
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Patent Dates:
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| Applied: |
Jun. 01, 1896 |
| Granted: |
Oct. 27, 1896 |
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Patent Pictures:
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George Amborn Jr. patent October 27, 1896 |
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Stan Schulz
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Description: |
| J. H. Williams & Co. produced an extensive variety of chain pipe wrenches. This patent and Amborn's parallel patent (no. 570,213) are cited on VULCAN chain pipe wrenches. Williams' chain wrenches incorporated aspects of multiple patents, and in the absence of patent markings on the tools or patent citations in advertising, etc. it is a challenge to connect features of the tools to specific patents.
This patent's focus is the fixed connection between the chain and handle, and other modifications related to the use of "cable chain."
Corresponding Canadian patent no. CA-54,446 was issued December 26, 1896.
Aspects of this patent and parallel patent 570,213 appear in British patent GB-189623890 registered Oct. 27, 1896. |
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