. The Street railway journal . om to 22 miles on grades of i per cent. The weight of the motor cars, including the electrical equip-ment, is 53 tons, and they are able to haul from five to seventrail cars of 10 tons and 12 tons dead-weight, at a speed of 40II I m. p. h., up grades of i in 100. Ofthe ten motor cars five are finished assaloon cars for use on express other five are fitted with second-class and third-class car contains a baggage com-partment and accommodations forthe air compressor. The current collector or 22, consists of two r
. The Street railway journal . om to 22 miles on grades of i per cent. The weight of the motor cars, including the electrical equip-ment, is 53 tons, and they are able to haul from five to seventrail cars of 10 tons and 12 tons dead-weight, at a speed of 40II I m. p. h., up grades of i in 100. Ofthe ten motor cars five are finished assaloon cars for use on express other five are fitted with second-class and third-class car contains a baggage com-partment and accommodations forthe air compressor. The current collector or 22, consists of two rollers ofelectrolytic copper of 3J/^-in. diam-eter and 2-ft. 19^-in. length, insulatedfrom one another, running on insu-lated ball bearings and mounted onan insulating rod. The current istaken off by copper contacts rubbingon both ends of each roller and ledinto the cars by means of insulatedcables. The trolley frame is madeup of Mannesmann tubing, attachedto the car roof by means of porcelaininsulators. Compressed air is used. = Fuse box. = Primary — — Short-circuit device.£ = Air cock for contro trolley =■ Starting-han„ = Air-brake — Switch for motor compressor. FIG. AND PLAN OF MOTORMANS CAB FIG. 23.—SWITCH FOR PRIMARY CIRCUITOPEN primary and secondary conductors. The ratio of the trans-formion is from 6:1. The transformers also have severalwindings, which supply the current at 14 volts for running thesmall fan-motors. MOTOR CARS AND LOCOMOTIVESThe express and passenger trains are hauled by motor cars,the freight trains by electric locomotives. The company has already decided, however, to use electric locomotives for cer- to raise and lower the trolley, and glycerine dash pots are pro-vided to control the speed of movement. Each car carries twotrolley poles, one for each direction of running. The current, at 3000 volts, is carried into the car, as alreadymentioned, by flexible cables, which, within the car, a
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
