. Ingegnere meccanico ferroviario . * gangs raggruppate e spotted e più speciali organized. C'è un ampio campo di pensiero e di pianificazione attenta quando si progettano nuovi negozi per fornire impianti di tracksand adeguati che coordineranno con i sistemi di produzione o programmi meglio adattati alla massima produzione a mini-MOM costo. Sulla base dell'esperienza con la trazione elettrica su Norfolk & Western, l'American Railway Engineering Assoziations Committee on Electrification conclude che sono praticabili 44,000 voltcurrent per la trasmissione e 11.000 volt di corrente monofase per la linea aerea

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. Railway mechanical engineer . * grouped and spotted and more special gangs organ-ized. There is a large field for thought and careful plan-ning when designing new shops to provide proper tracksand facilities which will co-ordinate with production sys-tems or schedules best adapted to maximum output at mini-mum cost. On the basis of experience with electric traction on theNorfolk & Western, the American Railway Engineering Asso-ciations Committee on Electrification concludes that 44, 000 voltcurrent for transmission and 11.000 volt single-phase current forthe overhead line are practicable for lines having heavy gradientsand heavy traffic, and that probably this system will effect asaving of at least 12 per cent of the total annual expenditure ascompared with steam operation.. At the McKees Rocks Plant of the Pressed Steel Car Company Some Failures of Chilled-Iron Car Wheels* Chemical Specifications Proposed to Improve Serv-ice—Importance of Low Percentage of Phosphorus BY H. J. FORCE Chemist and Engineer of Tests, Delaware, Lackawanna & Western THE cast iron wheel has a marvelous history. Approxi-mately 26, 000, 000 chilled-iron wheels are now in usein the United States and Canada, under freight cars, passenger coaches, refrigerator cars, engine tenders, citystreet cars, interurhan cars and electric locomotives. Eightyto ninety per cent of all the equipment in the United Statesand Canada is equipped with cast iron wheels. The annualproduction in the United States is approximately three mil-lion wheels, some of which are exported to France, Russia, Italy and other foreign countries. A large proportion ofthe total production is required for repairs. It is the object of this paper to point out such recom-mendations and changes as are thought to be necessary

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1910
• booksubjectrailroadengineering