. American engineer and railroad journal . MACHINE TOOL COMPANY. CONSTANT-SPEED GENERAL ELECTRIC MOTOR. at the rear, just above the main driving shaft. The drive isthrough a l->4-in. Renold silent chain, delivering direct fromthe motor shaft to the driving shaft, and running at a velocityof from 600 to 1,200 ft. per minute. The speed reduction at thechain is very low, the driving sprocket having 23 teeth and thedriven 30 teeth. The speed reduction is obtained by gearingbetween the driving shaft and the spindle. The motor is a direct-current machine of the C-Etype, made by the General
. American engineer and railroad journal . MACHINE TOOL COMPANY. CONSTANT-SPEED GENERAL ELECTRIC MOTOR. at the rear, just above the main driving shaft. The drive isthrough a l->4-in. Renold silent chain, delivering direct fromthe motor shaft to the driving shaft, and running at a velocityof from 600 to 1,200 ft. per minute. The speed reduction at thechain is very low, the driving sprocket having 23 teeth and thedriven 30 teeth. The speed reduction is obtained by gearingbetween the driving shaft and the spindle. The motor is a direct-current machine of the C-Etype, made by the General Electric Company, Schenectady,N. Y., and has a 100-per cent, range (400 to 800 rev. per min.)by field regulation. Its rating of 4 is taken at its lowestspeed—400 rev. per min. This speed range of 2 to 1 isquadrupled by two properly proportioned back-gear attach-ments arranged ai the spindle as shown in the rear view atthe left. The back-gear attachment is conveniently handled June, 1903. AMERICAN ENGINEER AND RAILROAD JOURNAL 246. tiEAKEU DKIVE UPON AN 84-IN. BORING MILL, BUILT FOB THE PENKSLVANI THE BB;TTS machine INDUCTION MOTOB (CONSTANT SPEED).—WESTINGIIOUSE ELECTRIC TUBING COMPANY. RAILROAD BY AND MANUFAC-
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
