US Patent: 426,171
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| Pipe-Cutter
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Patentee:
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| Harry Comstock (exact or similar names) - Fulton, NY |
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Patent Dates:
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| Granted: |
Apr. 22, 1890 |
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Patent Pictures:
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1 | 2
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Patent 426,171 - edited image |
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Stan Schulz
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Description: |
| "My invention relates to certain improvements in pipe-cutters for cutting metallic pipes, and the purpose thereof is to provide novel means by which a pipe is channeled to guide the cutters and the burr raised by the cutters is wholly removed, leaving the end of the pipe perfectly smooth, with a uniform surface and diameter and a beveled edge." The rocking frame for the paired cutters compensates for "out-of-round" pipe. The "burnishing block" removes the external burr formed by the cutters. The printed patent has an erroneous application date.
An 1893 write-up for the Comstock pipe cutter shows a "single wheel" cutter. |
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