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Harper's Encyclopedia of United States History (ed. Benson Lossing) 4 0 Browse Search
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Harper's Encyclopedia of United States History (ed. Benson Lossing), Engineering. (search)
rsal use of rotary motion, and of the reduplication of parts. The steam-engine is a machine of reciprocating, converted into rotary, motion by the crank. The progress of mechanical engineering during the nineteenth century is measured by the improvements of the steam-engine, principally in the direction of saving fuel, by the invention of internal combustion or gas-engines, the application of electrical transmission, and, latest, the practical development of steam turbines by Parsons, Westinghouse, Delaval, Curtis, and others. In these a jet of steam impinges upon buckets set upon the circumference of a wheel. Their advantages are that their motion is rotary and not reciprocal. They can develop speed of from 5,000 to 30,000 revolutions per minute, while the highest ever attained by a reciprocating engine is not over 1,000. Their thermodynamic losses are less, hence they consume less steam and less fuel. Duplication of parts has lowered the cost of all products. Clothing is
Harper's Encyclopedia of United States History (ed. Benson Lossing), Westinghouse, George 1846- (search)
Westinghouse, George 1846- Inventor; born in Central Bridge, N. Y., Oct. 6, 1846; settled in Schenectady in 1856; received a high school education; served in the National army in 1863-65. After the war he engaged in the manufacture of machinery under his various patents. His inventions include a rotary engine; several devices in railway signals; electric machinery; the Westinghouse air-brake, etc. Westminster Abbey