. The Street railway journal . WESTINGHOUSE AIR COMPRESSORS FOR CHARGING CARBRAKE RESERVOIR ONE OF THE SCOTT & MOUNTAIN ELECTRICALLY-DRIVENBOILER FEED PUMPS tact switch for varying the compound-ing by altering the number of coils inseries. A boosting set, composed of two nega-tive boosters, driven by a motor is in-stalled. The field coils of the boosters areseparately excited, and the necessaryvariation in voltage is obtained by regulat-ing resistances. Two return feeders are connected tothe rails at points approximately twomiles distant, through which the boostersdraw a part of the return cur
. The Street railway journal . WESTINGHOUSE AIR COMPRESSORS FOR CHARGING CARBRAKE RESERVOIR ONE OF THE SCOTT & MOUNTAIN ELECTRICALLY-DRIVENBOILER FEED PUMPS tact switch for varying the compound-ing by altering the number of coils inseries. A boosting set, composed of two nega-tive boosters, driven by a motor is in-stalled. The field coils of the boosters areseparately excited, and the necessaryvariation in voltage is obtained by regulat-ing resistances. Two return feeders are connected tothe rails at points approximately twomiles distant, through which the boostersdraw a part of the return current. Theboosters are bipolar, and have a capacityof 160 amps., at 100 volts. The switchboard, made by the GeneralElectric Company, consists of three feeder,three machine, and two battery panels;the instruments are of the Kelvin andBritish Thomson-Houston pattern. Three Lancashire boilers, 30 ft. long by8 ft. 6 ins. in diameter, supply steam at a
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
