US Patent: 1,983,091
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Electrodynamic machine
Variable-speed induction motor
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Patentee:
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| Everett P. Larsh (exact or similar names) - Vandalia, OH |
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Patent Dates:
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| Applied: |
Feb. 06, 1932 |
| Granted: |
Dec. 04, 1934 |
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Jeff Joslin
Vintage Machinery entry for Master Electric Co.
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Description: |
| This invention varies the speed of an induction motor by varying the "slippage", which can be achieved by a device on the stator that is adjusted to increase magnetic leakage. |
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