. The Street railway journal . rain, made 914 STREET RAILWAY JOURNAL. [Vol. XXIX. No. 21. entry into the Grand Central Station on May 11, 1907, andin a short time the operation of equipment should be underservice test. Some question has been raised as to whether trucks withdrivers of so large a diameter, 62 ins., on which are con-centrated 15 tons of motors in a limited wheel-base, willtrack properly under all conditions of rail. Experience,however, is the final criterion. Sometime since I made a verv careful investigation of the it will maintain a drawbar pull of nearly 25,000 lbs. at agood r
. The Street railway journal . rain, made 914 STREET RAILWAY JOURNAL. [Vol. XXIX. No. 21. entry into the Grand Central Station on May 11, 1907, andin a short time the operation of equipment should be underservice test. Some question has been raised as to whether trucks withdrivers of so large a diameter, 62 ins., on which are con-centrated 15 tons of motors in a limited wheel-base, willtrack properly under all conditions of rail. Experience,however, is the final criterion. Sometime since I made a verv careful investigation of the it will maintain a drawbar pull of nearly 25,000 lbs. at agood rate of speed for several hours continuously, and withnatural ventilation. These extraordinary characteristicswould, for the class of service for which these machines wereconsidered, amply warrant the additional weight because ofthe simplicity of the gearless machine. A very promising type of machine, embodying many ofthe good features of those which had preceded it, is nowunder construction by the General Electric Company, for. FIG. 13.—ALTERNATING-CURRENT LOCOMOTIVE MOTOR-GENERATOR COMBINATION, WITH INDEPENDENT TENDER possibilities of direct-current gearless and geared motors,the former of the bi-polar type, for the same service, a verysevere one. Both machines are of the four-axle, bogie-truck type, thetrucks being linked together. The geared locomotive. , weighs 93 tons and the gearless, Fig. 11, 126 tons, butthe weight per axle is well within the usual allowance. On use either on direct current or with a motor-generator setsupplied from, an alternating-current trolley. This machineis of the four-axle free-bogie type, the drawbar pull beingtaken through the main frame. On each truck, and form-ing an integral part with it, are two bi-polar gearless mo-tors driving the middle pair of axles, and at either end ofeach truck is a pair of leading wheels of similar diameter.
Size: 3185px × 784px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
