US Patent: 1,750,446
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| Dynamo-electric machine
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Patentees:
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| Clifford H. Landis (exact or similar names) - Chicago, IL |
| John D. Wallace (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Feb. 27, 1928 |
| Granted: |
Mar. 11, 1930 |
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Jeff Joslin
Vintage Machinery entry for J. D. Wallace & Co.
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Description: |
| "This invention relates to power machines, particularly electric motors, and more especially to those which are designed compactly as direct connected electric motor driven units, such for instance as mortisers and the like. The improvements herein referred to reside in the 'head' or tool operating part and more specifically the motor, as distinct from the work holding part. The main objects of the invention are to provide improved means for protecting the machine, especially the motor with its commutator and bearings, from dust; and to provide improved means for controlling the flow, distribution and drainage of lubricating oil." |
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