File:The Street railway journal (1902) (14574410729).jpg

Identifier: streetrailwayjo201902newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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Text Appearing Before Image:
FIG. io.—CAR-WIRING DIAGRAM OF METROPOLITAN EQUIPMENT their equipments connected in parallel; Fig. 3, two cars inwhich the motors of the first car have been cut out of cir-cuit; Fig. 4, two cars in which the motors of the second carhave been cut out of circuit; Fig. 5, one car with motorsin series; Fig. 6, one car with motors in parallel; Fig. 7,one car with the first motor cut out of circuit, and Fig. 8,one car with the second motor cut out. A schematic dia- motors and cut out, and the motors coupled in seriesparallel control. E1 and E2 represent the special switches, called 2 mo-tors-4 motors switches, by which the motor car connec-tions are disposed for four-car trains or eight-car trains.At the same time, the steps of resistances are changed inorder to suit exactly the two-motor or four-motor equip-
Text Appearing After Image:
September 6, 1902.) STREET RAILWAY JOURNAL. 309 ment conditions. It was found in practice, however, thatthis latter disposition was not necessary on the Metropoli-tan cars, and in the actual controllers this refinement wasomitted. I1 and P are the armatures, and J1 and J2 are the fieldsof the motors. M1 and M2 are the reversing switches forreversing the direction of rotation. SA1, SR1, SA2 and SR2 two motors I1 and J1 are then so connected that the move-ment of controller switch P1 can put them either in seriesor in parallel. Fig. 10 is a car wiring diagram of the system.

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