a website collaboration between Science Service and the Smithsonian Institution

1943 - workman aligning the commutator necks which feed electricity to the rotor a 100-ton copper-and-steel giant


CD 1964040 E&MP31.052

Electric Motor

October 10, 1943

This 100-ton copper-and-steel giant will soon take its place on the war production line helping to turn out vitally-needed steel plate.

It is the rotor for a 7,000-horsepower electric motor which the Westinghouse Electric & Manufacturing Company is building for a big steel company.

Containing over 50,000 feet of copper wire, the rotor will spin around at a speed of more than 1,600 miles an hour to furnish power for rolling steel plate 120 inches in width and ranging in thickness from three eights of an inch to two inches.

The completed motor will weigh 264 tons and is one of the largest Westinghouse has built for the steel industry.

This workman at the Company's East Pittsburgh plant is shown aligning the commutator necks which feed electricity to the rotor. 

Original Caption by Science Service

National Museum of American History


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