. Railway mechanical engineer . s are machined and heated they will warpand distort when case-hardened. The only way to insurethese being true, fitting prop>erly and having satisfactorybearing surface is to grind them. The cost of grinding isgenerally offset by the greater production and fewer spoiledpieces. Mechanical Parts of Electric Locomotives Comparison with Steam Locomotives; Detailsof Construction of Outside Frame Type Railway Mechani By H. A. Houston al Engineer, Westinghouse Electric & Manufacturing Company M [ECHAXICAL parts of electric locomotives be de-fined as those parts
. Railway mechanical engineer . s are machined and heated they will warpand distort when case-hardened. The only way to insurethese being true, fitting prop>erly and having satisfactorybearing surface is to grind them. The cost of grinding isgenerally offset by the greater production and fewer spoiledpieces. Mechanical Parts of Electric Locomotives Comparison with Steam Locomotives; Detailsof Construction of Outside Frame Type Railway Mechani By H. A. Houston al Engineer, Westinghouse Electric & Manufacturing Company M [ECHAXICAL parts of electric locomotives be de-fined as those parts of the locomotive which ser\-e forits foundation, as the running gear and cab. Thisis illustrated by Figs. 1 and 12, which are end and side viewsof the mechanical parts of a Baldwin-\\estinghouse electriclocomotive built for the Chilean State Railways. Electric locomotives may be divided into two major classes,namely, outside frame and inside frame locomotives. Theformer class includes those types of construction in which:. first, the driving motors are mounted on and geared to theaxle; second, the motors drive the axles by means of quillsand springs; third, the motor armature concentric with thedriving axle. The latter typifies construction, em-bracing: first, direct side rod drive in combination with acounter-shaft or jack-shaft; second, gear and side rod drivethrough a jack-shaft. In this paper, it is intended to comment on the construc-tion of parts of the tyi>e utilizing outside frames,and axle-mounted motors with gear drive. Comparison With Steam Locomotive DeHign The electric locomotive a peculiarity in that itsdesign characteristics embody the fundamentals of both thesteam locomotive and the mo^hrn all steel it is one or more Wxomotive wheel arrange-ments, or running gears, with tlie equivalent of a car bodyresting upon it. The cab may be mounted directly on themain frame or have a center pin an
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
