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1943 - the high speed steel cutting tool

WORLD'S LARGEST BORING MILL

E&MP 10.039
Dynamics-Dynamos
January 1943

SLICES 4 MILES OF STEEL SHAVINGS AN HOUR

Westinghouse East Pittsburgh Works - Speeding production of orders important to national defense, one of the world's largest boring mills is shown machining the frame of a huge waterwheel generator to limits held within four thousandths of an inch, about the thickness of a newspaper page.

This mill is driven by 24 motors, ranging from 300- horsepower down to 2 1/2 horsepower, requiring 600,000 watts of electricity. Its 30-foot turntable weighs 176,000 pounds.

Seen in this image - the high speed steel cutting tool.

Westinghouse ID # 268131

Original Caption by Science Service
© Westinghouse



National Museum of American History

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