US Patent: 482,864
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| Split wheel
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Patentee:
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| Conrad M. Conradson (exact or similar names) - Madison, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 26, 1891 |
| Granted: |
Sep. 20, 1892 |
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Jeff Joslin
Vintage Machinery entry for Conradson Machine Tool Co.
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Description: |
| The inventor had been working for Gisholt Machine Co., designing their heavy-duty turret lathes. According to the book, "Madison, a History of the Formative Years, 2nd ed.", after the first version of the lathe was in production, Conradson lost interest and began spending his time on his own projects; the company owner, John A. Johnson, was forced to fire him, which happened very roughly at the time of this patent. In 1917 Conradson would established the short-lived Conradson Machine Tool Co., makers of milling machines, lathes, planers, and radial drilling machines. |
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