US Patent: 522,136
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| Chain Wrench
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Patentee:
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| John H. Vinton (exact or similar names) - Boston, MA |
| USPTO Classifications: |
| 81/68 |
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Patent Dates:
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| Applied: |
Dec. 11, 1893 |
| Granted: |
Jun. 26, 1894 |
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Patent Pictures:
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John H. Vinton Pat. June 26, 1894 |
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Stan Schulz
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Description: |
| "The invention has for its object the production of a durable, strong, simple and efficient chain wrench of great power, and one by which a pipe may be handled without the free end of the chain becoming accidentally loosened from the head of the wrench." -- from the description.
The head and chain match illustrations of the Trimo Giant Pipe Wrench as shown in late 19th and early 20th Century catalog listings; the Trimo Bulldog chain wrench used the same mode for attaching the chain to the handle. |
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