US Patent: 1,947,533
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| Automatic control for motors
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Patentee:
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| John D. Nies (exact or similar names) - St. Charles, IL |
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Patent Dates:
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| Applied: |
Jun. 11, 1931 |
| Granted: |
Feb. 20, 1934 |
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Jeff Joslin
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Description: |
| It appears that this invention was primarily intended for printing presses."This invention relates to automatic control for motors. Although it has been illustrated as embodied in a system for automatically controlling the rotor resistance during acceleration and slow speed operations of slip ring motor, the invention is applicable to many other uses." |
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