US Patent: 3,745,845
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| Speed changer
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Patentee:
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| George L. Redman (exact or similar names) - East Alton, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 17, 1971 |
| Granted: |
Jul. 17, 1973 |
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Jeff Joslin
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Description: |
| This clever drill press slow-speed attachments mounts the motor with its shaft and multi-step pulley to the bottom; a belt connects it to a multi-step pulley on the bottom of a vertical jack-shaft, and the top of the jack-shaft carries another pulley that connects to the spindle pulley. This simple and compact arrangement provides the two-stage speed reduction required for drilling metal on a small drill press with an AC induction motor. |
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