. Railway mechanical engineer . was brokenup into many pieces, some so small as to be impossibleto replace and for which it was necessary to substituteflanged steel plates, which were partly riveted and partlywelded into place. Three out of five of the sections making up the under por-tion of the underframe were distorted so that they had to becut and straightened, and this portion of the operation ofreclaiming presumably was practically the same as that in thecase of the frame which Mr. Murray handled. I have been familiar for a great many years with themerits of the Tliermit process and know
. Railway mechanical engineer . was brokenup into many pieces, some so small as to be impossibleto replace and for which it was necessary to substituteflanged steel plates, which were partly riveted and partlywelded into place. Three out of five of the sections making up the under por-tion of the underframe were distorted so that they had to becut and straightened, and this portion of the operation ofreclaiming presumably was practically the same as that in thecase of the frame which Mr. Murray handled. I have been familiar for a great many years with themerits of the Tliermit process and know the fine work whichcan be done with it under some conditions. But the framewhich we welded was so badly broken up that it would havebeen a physical impossibility to have repaired it with theThermit process. I am taking the liberty of again bringingthe matter up in order that the difference in the nature ofthe two jobs may be clearly drawn. W. L. Bean. *Sce tlie February. 1919, issue of the Railway Mechanical Engineer,Itagc Mikado Type Loconvotive for Canadian Pacific Freight SchikC New Canadian Pacific Locomotives Mikado Type for Freight Service; Heavy FrameConstruction and Interchangeable Side Rods BY W. A. NEWMAN Engineer of Locomotive Construction THE locomotive building program now being carried outby the Canadian Pacific Railway includes four newtypes of locomotives; a Mikado type locomotive havinga tractive effort of 56,000 lb., two classes of Pacific typelocomotives with 43,700 and 42,600 lb. tractive effort re-spectively, and a Santa Fe type locomotive with a tractiveeffort of 66,000 lb. All of these locomotives have beendesigned by the mechanical engineering department of theCanadian Pacific and are being contsructed at the Augusshops in Montreal. The initial order of 10 Mikado t)pe locomotives has 235,000 lb. on the driving wheels, which gives a factor ofadhesion of The cylinders are 25 in. by 32 in., driv-ing wheels 63 in. outside diameter, which with a n
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
