US Patent: 404,770
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Pipe Wrench
Improvement in Alligator-Wrenches
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Patentee:
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| Edward S. Boynton (exact or similar names) - New York, NY |
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Patent Dates:
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| Applied: |
Nov. 26, 1888 |
| Granted: |
Jun. 04, 1889 |
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Patent Pictures:
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Edward S. Boynton Pat. June 4, 1889 |
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Stan Schulz
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Description: |
| The improvement is "steps" or "stops" on the smooth jaw of an adjustable alligator wrench which help alleviate the problem of crushing pipe. The improvement is applied to Boynton's June 14, 1887 patent (no. 364,749), and known examples are marked with the earlier patent date.
Corresponding British patent GB-188909299 was registered June 4, 1889. |
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