. American railway transportation . 20 AMERICAN RAILWAY TRANSPORTATION with a strap of iron nailed to the upper surface, the railsbeing very similar to those most frequently used forstreet-railways until horse-cars were displaced by theheavier electric ears run at a higher rate of The Rocket, 1829. The successful locomotive dates from 1820, at whichtime the celebrated English engineer Stephenson broughlout the Rocket. The stationary engine had been intro-duced by Watt fifty years before that time, but it wasStephenson who first incorporated in the engine the twofeatures essential to a
. American railway transportation . 20 AMERICAN RAILWAY TRANSPORTATION with a strap of iron nailed to the upper surface, the railsbeing very similar to those most frequently used forstreet-railways until horse-cars were displaced by theheavier electric ears run at a higher rate of The Rocket, 1829. The successful locomotive dates from 1820, at whichtime the celebrated English engineer Stephenson broughlout the Rocket. The stationary engine had been intro-duced by Watt fifty years before that time, but it wasStephenson who first incorporated in the engine the twofeatures essential to a workable locomotive. One ofthese two features was the multitubular boiler, by whichthe heating surface is greatly increased. Stephenson wasnot the inventor of this, but was the first to make prac-tical use of the invention. The other feature was theexhaust draft, the device whereby the exhaust -team fromthe cylinder created a stronger draft through the firo-box and the tubes of the boiler. By combining these two ORIGIN OF THE AMERICAN RAILWAY 21 principles in the Rocket, Stephenson became the fatherof the locomotive. At the trial test, in October, 1829,on the Liverpool and Manchester Railroad, the Rocketattained a speed of 29 miles an hour and the practicabilityof mechanical tract
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