. Bulletin - United States National Museum. un from 247 to 282(formerly 1147 to 1182), with the exception of the scrappedNo. 270. With an operating weight of 292,600 pounds, the locomo-tives of the T-3A class develop 1,908 horsepower continu-ously, with a tractive force of 12,750 pounds, and they candevelop 2,488 horsepower for 1 hour, with a tractive forceof 18,440 pounds. The maximum speed of a T-3A is 75 milesan hour. These locomotives operate on 660-volt direct cur-rent, usually obtained from a third rail. The pantographsare used only when crossing certain complicated crossoverswitches. Ea
. Bulletin - United States National Museum. un from 247 to 282(formerly 1147 to 1182), with the exception of the scrappedNo. 270. With an operating weight of 292,600 pounds, the locomo-tives of the T-3A class develop 1,908 horsepower continu-ously, with a tractive force of 12,750 pounds, and they candevelop 2,488 horsepower for 1 hour, with a tractive forceof 18,440 pounds. The maximum speed of a T-3A is 75 milesan hour. These locomotives operate on 660-volt direct cur-rent, usually obtained from a third rail. The pantographsare used only when crossing certain complicated crossoverswitches. Each of the eight axles is driven by its individualgearless motor. The overall wheelbase is 46 feet, 5 inches,the overall length 56 feet, 10 inches. 6 & O Hudson-Type Locomotive Lord Baltimore, 1 935 During the winter of 1936-1937, The Baltimore and OhioRailroad Co. conducted in conjunction with the magazineThe Model Craftsman a contest among model builders forthe construction of a model of the railroads Washington-to- 53689 O - 56 -7 95. Figure 76.—Model of B & O Hudson-type locomotive Lord Baltimore, 1935. Jersey City lightweight, streamHned train, the Royal Blue,first placed in operation on June 24, 1935. The contest, with a first prize of $500, was won by FletcherG. Speed of New Rochelle, N. Y., and his prize-winning train(figure 76) was presented by the Baltimore and Ohio in 1937to the National Museum (USNM 311191). The train con-sists of the Hudson-type, or 4-6-4, steam locomotive LordBaltimore and tender, together 2 feet long, plus five in workmanship, and powered with a small electricmotor, the model is built to a scale of V4 inch to the foot. The original locomotive Lord Baltimore was designed bythe Baltimore and Ohio, and was constructed at the com-panys Mount Clare shops in Baltimore. The weight of thelocomotive and tender in working order was 527,000 pounds,and the tractive force was 38,000 pounds. The drivingwheels were 84 inches in diameter, and the
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
