. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . FIG. 2. EOX FRAME MOTORused and the weight of the armature iscarried by the upper half as is done inthe Westinghouse motors. Having outlined the two types of framesand the advantages of each, let us con-sider the manufacture, which is in generalthe same for both types. In the case of held tight by nuts and lockwashers (W),Fig. 2. POLES. The motor is now ready to main field coils (M) and interpolecoils (Z), each made up of copper strapot several turns, each turn insulated from Jan
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . FIG. 2. EOX FRAME MOTORused and the weight of the armature iscarried by the upper half as is done inthe Westinghouse motors. Having outlined the two types of framesand the advantages of each, let us con-sider the manufacture, which is in generalthe same for both types. In the case of held tight by nuts and lockwashers (W),Fig. 2. POLES. The motor is now ready to main field coils (M) and interpolecoils (Z), each made up of copper strapot several turns, each turn insulated from January, 1912. RAILWAY AND LOCOMOTIVE ENGINEERING 29 the other and all entirely covered by in-; sulation, are slipped over the pole pieces«• (P and V) and the pole pieces bolted to*the frame with a piece of spring steel (T)/.behind the coil and next to the frame to*Jprevent all vibration and to take up for. FIG. 3. MAIN FIELD POLE. the shrinkage of the field coils. Electricalconnections are made to the coils at ter-minals (Y) and the leads are pulledthrough holes, fitted with rubber bushingsto protect the leads, in the frame. Themain pole pieces are not solid, but aremade up of laminations which are heldbetween two end plates riveted togetherwhen the laminations are under a pressureof about 60 tons. The housings (H) are now fitted to theframe, the armature (A) put into place,the two halves bolted together and afterthe axle bearings (L) and gear case (G)are fitted the motor is ready for runningafter the bearings have been packed andoiled. The lubrication of the armature andaxle bearings is an important considera-tion, especially in case of the former, forif the armature bearing should over heatand the lining of babbit becomes melted,the distance which this would allow thearmature to drop, would bring the arma-ture into the pole pieces, as the air gapbetween the armature and the pole faces
Size: 1935px × 1292px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
