. The Street railway journal . er the inside and the outside of the cars. are of the four-wheel double-deck type, having longitudi-nal seats inside with a capacity of twenty-four and crossseats on the top with a capacity of thirty-five, making fifty-nine as the total seating capacity of the car. The length ofthis car was 28 ft. 2 ins. All of these cars are finished inthe same general style as those already described and areequipped with Westinghouse 49-B motors and No. 90controllers. The 49-B motor is specially designed for citytramway work and has four poles built up of annealed-steel stampin
. The Street railway journal . er the inside and the outside of the cars. are of the four-wheel double-deck type, having longitudi-nal seats inside with a capacity of twenty-four and crossseats on the top with a capacity of thirty-five, making fifty-nine as the total seating capacity of the car. The length ofthis car was 28 ft. 2 ins. All of these cars are finished inthe same general style as those already described and areequipped with Westinghouse 49-B motors and No. 90controllers. The 49-B motor is specially designed for citytramway work and has four poles built up of annealed-steel stampings cast on the inside of the motor casing,which forms the yoke of the magnetic circuit and also com-pletely encloses the motor. The yoke is horizontally di-vided and the two parts hinged so that the lower half canbe dropped and the whole of the motor exposed for in-spection and repairs. The field coils are machine-woundon formers. The armature is light and of small armature is of the slotted-core, drum-wound type,. SINGLE-DECK CAR with a two-circuit winding, which insures sparkless run-ning. The motors are coupled to the car axles throughsingle-reduction gearing enclosed in a cast-steel case. Thecar axles are 4 ins. in diameter and the wheels are 2 ft. 6ins. in diameter, while the gage of the track is 4 ft. 8| ins. The Westinghouse No. 90 controller is of the series-parallel type and has an ingenious mechanical intercon- 55- STREET RAILWAY JOURNAL. [Vol. XIX. No. 18. nection between the main lever and the reverse lever,whereby the number of electrical contacts is kept as lowas possible. This feature reduces the wear-and-tear ex-penses. This controller is arranged on the Newcastle tram-cars for service braking; contacts are arranged wherebya backward motion of the main lever beyond the offposition places suitable resistances in circuit with the carmotors, which thus run as generators on load driven bythe momentum of the moving car. Used in this way it ispractically
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
