US Patent: 1,064,036
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| Chain Wrench
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Patentee:
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| Arthur J. Whitfield (exact or similar names) - Boston, MA |
| USPTO Classifications: |
| 81/68 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 05, 1912 |
| Granted: |
Jun. 10, 1913 |
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Patent Pictures:
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Arthur J. Whitfield patent June 10, 1913 |
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Stan Schulz
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Description: |
| The fixed end of the chain is attached to the bar by an off-center swivel whereby the effective length of the chain and gripping points of the links are altered depending on the size of the pipe to be grasped. |
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