US Patent: 18,521
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| Device for reversing the chisel in mortising-machines
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Patentee:
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| Caleb B. Rogers (exact or similar names) - Norwich, CT |
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Patent Dates:
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| Granted: |
Oct. 27, 1857 |
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Jeff Joslin Vintage Machinery entry for C. B. Rogers & Co.
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Description: |
| "My improvement consists in the peculiar construction and application of a spiral way or guide, acting on a reversing check pin, to reverse the position of the chisel or mortising tool, for cutting opposite ends of the mortise." |
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