. The Street railway journal . mproved ventilation is thus secured andthe temperature of all parts reduced. These generators delivertheir rated output continuously for twenty-four hours with but avery moderate rise of temperature and without sparking. Theyare compound wound and the potential at the terminals increasesabout ten per cent from no load to full load, the speed being keptconstant. The present standard sizes are 100, 150, 200, 250 and Fig. 9 shows an illustration of a machine of thistype. Although the practice of mounting the armature directly uponthe shaft and thus
. The Street railway journal . mproved ventilation is thus secured andthe temperature of all parts reduced. These generators delivertheir rated output continuously for twenty-four hours with but avery moderate rise of temperature and without sparking. Theyare compound wound and the potential at the terminals increasesabout ten per cent from no load to full load, the speed being keptconstant. The present standard sizes are 100, 150, 200, 250 and Fig. 9 shows an illustration of a machine of thistype. Although the practice of mounting the armature directly uponthe shaft and thus to a large extent combining the engine andgenerators in one compact machine originated at a comparativelyrecent date, the advantages of this method have become so wellrecognized that machines of this type are rapidly superseding belt-driven apparatus, particularly in power plants where large unitsare required. The popularity of engine type generators is princi-pally due to their simple construction, economy of floor space, in-. F1G. 1.—THREE VIEWS OF FIELDS |FOR ENGINE TYPE GENERATORS larger generating units and for machines especially suitable forrendering the distribution of power on roads of considerablelength commercially successful. The Westinghouse Electric & Manufacturing Company attaineda high position in the manufacture of electric railway apparatusby the introduction of the Westinghouse No. 3 motor in 1891,and has steadily improved the design and construction of itsmotors, generators and other railway apparatus to an extent thatby efficiency of operation and magnitude of achievement justifiesthe present contribution to railway history. Twenty thousand motors, aggregating 650,000 , is the West-inghouse record in one branch of the railway field alone. It isthe purpose of this article to illustrate and describe some of thelatest achievements in electric railway apparatus, as exemplifiedin the latest Westinghouse generators, boosters, rotary trans-formers,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
