US Patent: 870,596 - Motor-controller


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US Patent: 870,596

Motor-controller

Patentee:

Lewis L. Tatum (exact or similar names) - Norwood, OH

USPTO Classifications:

200/5R, 200/6.0BA, 318/829

Tool Categories:

electrical devices : electric motors : motor controls

Assignees:

Allis-Chalmers Co. - Milwaukee, WI

Bullock Electric Mfg. Co. - Norwood, OH

Manufacturer:

Allis-Chalmers Co. - Milwaukee, WI

Witnesses:

George B. Schley

Fred J. Kinsey

Patent Dates:
Applied:	Aug. 31, 1906
Granted:	Nov. 12, 1907

Patent Pictures:

USPTO (New site tip)
Google Patents
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Vintage Machinery entry for Allis-Chalmers Mfg. Co.
Vintage Machinery entry for Bullock Electric Mfg. Co.

Description:

"My invention is especially applicable to mill motors and mine hoists where it is necessary to frequently stop, start and reverse the motors. It is also well adapted for use upon electric locomotives and in all places where large currents or high voltages are to be controlled."