US Patent: 2,517,836 - Brush lifting mechanism for electric motors


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US Patent: 2,517,836

Brush lifting mechanism for electric motors

Patentee:

Steffen S. Brown (exact or similar names) - Dayton, OH

USPTO Classifications:

310/167, 73/547

Tool Categories:

electrical devices : electric motors : induction motors : repulsion start induction run motors

Assignees:

Brown-Brockmeyer Co. - Dayton, OH

Manufacturer:

Brown-Brockmeyer Co. - Dayton, OH

Witnesses:

Unknown

Patent Dates:
Applied:	Nov. 14, 1947
Granted:	Aug. 08, 1950

Patent Pictures:

USPTO (New site tip)
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Vintage Machinery entry for Brown-Brockmeyer Co.

Description:

A mechanism for lifting the brushes and shorting the commutator bars of a repulsion-induction motor. Such a mechanism engages when the motor has reached sufficient speed. The innovation is to perform the two actions simultaneously so as to limit the amount of arcing.