US Patent: 9,688
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| Machine for pointing and threading screw-blanks
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Patentee:
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| Thomas J. Sloan (exact or similar names) - New York, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Apr. 26, 1853 |
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Jeff Joslin
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Description: |
| This patent is of interest because it covers the machine used to manufacture the first modern wood screw, invented by Sloan in 1846; see patents 4,704 and RE107.According to the 1873 "Subject-matter index of patents for inventions issued by the United States Patent Office", this patent was granted an extension. |
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