Railway and Locomotive Engineering . ns Accident Bul-letin In the Interstate Commerce Commis-sions Accident Bulletin No. 74, coveringOctober, November, and December, 1919,and the year ended December 31, 1919,returns were included which indicatedthat twenty-two accidents occurred as aresult of cast steel wheels breaking, tenbeing caused by overheating and twelveby other causes. These data were cor-rectly compiled from monthly reports ofrailway accidents filed in the Bureau ofStatistics by various railways throughoutthe United States, but it has developed thatmost of the companies manufacturing
Railway and Locomotive Engineering . ns Accident Bul-letin In the Interstate Commerce Commis-sions Accident Bulletin No. 74, coveringOctober, November, and December, 1919,and the year ended December 31, 1919,returns were included which indicatedthat twenty-two accidents occurred as aresult of cast steel wheels breaking, tenbeing caused by overheating and twelveby other causes. These data were cor-rectly compiled from monthly reports ofrailway accidents filed in the Bureau ofStatistics by various railways throughoutthe United States, but it has developed thatmost of the companies manufacturing thewheels in question made cast iron wheelsinstead of cast steel wheels. Correspon-dence with the roads rendering the re-turns resulted in a correction of all themonthly reports affected. It seemsproper, therefore, to call attention to theseerrors and to state that the returns attrib-uted to the breaking of cast steel be transferred to cast iron wheels. ISO RAILWAY AND LOCOMOTIVE ENGINEERING May, 1921 Biv^iivej^placers. With aF e w i n g stype Re-placer rerail-ments are quicklyeffected and delaysrelieved. Strong enoughto carry the heavi-est locomotive, yetlight enough to behandled by oneman. Gradual andeasy climb ofwheels on to re-placer is in markedcontrast to the ab-rupt ascent ofother types ofcamel back frogs. The Q & C Co. 90 West St. New York Chicago St. Loui» Baldwin Record No. 100. The Walschaerts Valve Gear as de-scribed and illustrated in the latest Bald-win-Record, No. 100, leaves nothing tobe desired in point of construction oradjustment. The series of hypotheticalcases covers all that experience has shownlikely to occur in the variations in valveopening incident to the assembHng of theparts, as well as what may arise afterthe gear has been sometime in the hypothetical illustrated cases do notexactly tally to a sixty-fourth in everyinstance, the directions are so clear thatany intelligent mechanic may immediatelysee what part of the gearing
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