US Patent: AI279
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| Hollow Auger
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Patentee:
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| Mahlon Gregg (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 15, 1860 |
| Reissue Information: |
| Reissue of 19,292 (Feb. 09, 1858) |
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Jeff Joslin (dm)
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Description: |
| The primary purpose of this "Additional Improvement" patent is to provide a drawing of the hollow auger intended to be used with Gregg's Machine for Cutting Tenons on Spokes. The original patent, number 19292, was issued February 9, 1858. |
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