. Electric railway journal . GEARLESS MOTOR ARMATURE AND DRIVING ELECTRIC LOCOMOTIVE used for single independently-operated switches, butelectro-pneumatic cam control is used for operating^banks of switches. Four combinations of motors are provided for motor-ing. The first is with twelve motors in series, thesecond with six motors in series and two sets inmultiple, the third with four motors in series and threesets in multiple, and the fourth with three motors in- 510 Electric Railway Journal Vol. 55, No. 11. ONE-HALF OF RUNNING GEAR, WITH MOTORS LOCOMOTIVE
. Electric railway journal . GEARLESS MOTOR ARMATURE AND DRIVING ELECTRIC LOCOMOTIVE used for single independently-operated switches, butelectro-pneumatic cam control is used for operating^banks of switches. Four combinations of motors are provided for motor-ing. The first is with twelve motors in series, thesecond with six motors in series and two sets inmultiple, the third with four motors in series and threesets in multiple, and the fourth with three motors in- 510 Electric Railway Journal Vol. 55, No. 11. ONE-HALF OF RUNNING GEAR, WITH MOTORS LOCOMOTIVE series and four sets in multiple. In each combinationthere is one tapped-field step in addition to therheostatic steps, thus giving eight operating speedsexclusive of the thirty-one resistance steps. For regeneration, some motors are used to excite thefields of the others, which in turn are used as gen-erators to return power to the line. As a provision against short circuits or extreme over-loads, a quick-acting circuit breaker is provided in theapparatus cab which will protect the circuit in less than of a second. Mechanical Construction Designed to ProvideFlexibility For flexibility in curving the running gear is madeup of four trucks, each of a relatively short middle two trucks have four driving axles each,and the two end trucks, two driving axles and oneguiding axle each, making a total of fourteen trucks are connected together with articulationjoints which allow of no relative lateral
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