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US Patent: 790,541
Controller for electric motors
Patentee:
Walter J. Warder, Jr. - Chicago, IL

USPTO Classifications:
200/9

Tool Categories:
electrical devices : electric motors : motor controls

Assignees:
Western Electric Co. - Chicago, IL

Manufacturer:
Western Electric Co. - Chicago, IL

Witnesses:
W. H. Warren
George P. Barton

Patent Dates:
Applied: Sep. 26, 1904
Granted: May 23, 1905

Patent Pictures:
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"Vintage Machinery" entry for Western Electric Co.
Description:
"My invention is especially intended for use in controllers used with motors which operate machine-tools or other machinery requiring variable speed..."

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