. Electric railways, theoretically and practically treated . DIRECT CURRENT SERIES RAILWAY MOTOR. 79. 8o ELECTRIC RAILWAYS. the cradle consisting of a U-shaped bar fastened to thetruck at the middle of the U. This form of suspension isdesigned to relieve the bearings of the weight of the the nose suspension (Fig. 43), a cast projection on themotor frame, termed the nose, is fastened through a heavylink to the motor truck. With the nose suspension, theweight of the motor is distributed between the truck andthe car axle. Box Frame Type of Motor. — The rapid developmentof heavy inter-u
. Electric railways, theoretically and practically treated . DIRECT CURRENT SERIES RAILWAY MOTOR. 79. 8o ELECTRIC RAILWAYS. the cradle consisting of a U-shaped bar fastened to thetruck at the middle of the U. This form of suspension isdesigned to relieve the bearings of the weight of the the nose suspension (Fig. 43), a cast projection on themotor frame, termed the nose, is fastened through a heavylink to the motor truck. With the nose suspension, theweight of the motor is distributed between the truck andthe car axle. Box Frame Type of Motor. — The rapid developmentof heavy inter-urban railways created a demand for amotor of large capacity, which could be mounted under acar in a limited space. To meet this contingency theGeneral Electric Company developed the box frame typeof railway motor. This type of motor differs from theordinary split frame motor, in that the magnet frame con-sists of a one piece hollow casting, open at both armature is inserted into position from the side, beingretained in place by end plates, which fasten to the fieldframe. One of the adv
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