US Patent: 489,048
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| Pipe Wrench
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Patentees:
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| Freeman L. Twiss (exact or similar names) - Groton, Tompkins County, NY |
| Luther A. Barber (exact or similar names) - Groton, Tompkins County, NY |
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Patent Dates:
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| Applied: |
Nov. 05, 1892 |
| Granted: |
Jan. 03, 1893 |
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Patent Pictures:
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1 | 2
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Freeman L. Twiss and Luther A Barber patent January 3, 1893 |
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Stan Schulz
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Description: |
| The handle is threaded into the chain head, and adjusts the toothed face to grip pipe.
A known incomplete example is missing the toothed gripping head, and is marked with the patent date.
Smith & Denison - patent attorneys
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