Railway and Locomotive Engineering . ive Power, Rolling Stock and Appliances Vol. XXIX. .114 Liberty Street, New York, March, 1916. No. 3 Triumph of Grade Reductions and Other ImportantImprovements on the Canadian Pacific Railroad Among the remarkable improvements in latter to the Rogers Pass tunnel that is driver of a descending train signalled to grade reductions on the principal railroads being driven through INIinint Macdonald in tlie switchman that his train was under in America it is doubtful if there is in the Selkirk Range. control, the normal setting of one of tluse America a better i
Railway and Locomotive Engineering . ive Power, Rolling Stock and Appliances Vol. XXIX. .114 Liberty Street, New York, March, 1916. No. 3 Triumph of Grade Reductions and Other ImportantImprovements on the Canadian Pacific Railroad Among the remarkable improvements in latter to the Rogers Pass tunnel that is driver of a descending train signalled to grade reductions on the principal railroads being driven through INIinint Macdonald in tlie switchman that his train was under in America it is doubtful if there is in the Selkirk Range. control, the normal setting of one of tluse America a better illustration of what may Prior to 1908 these two stations were switches would divert the train to a catch be done in the way of grade reduction in separated by such extreme grades that siding. mountainous regions than the improve- four 154-ton consolidation (2-8-0) loco- Increase in the density and extent of ment of the Canadian Pacific railroad line motives were required to haul a trainload traffic made great reduction practically a. THE LACHINE CANAL SWING SPAN IN ITS OPKN AND CLOSED POSITIONS. in British Columbia. It has involved theconstruction, some six years ago, of oneof the most interesting systems o£ tunnelsin existence, and also the construction,now under way, of the longest tunnel onthe continent. We refer in the formerinstance to the spiral tunnels in the valleyof the Kicking Horse River, and in the of 710 tons of freight over this sectionof the main line. For about three milesa grade of per cent, prevailed, decreas-ing to 4 and 35 per cent, for the re-mainder of the distance. These gradesinvolved the use of spring switches atdifferent points along the line for thepurpose of safety. Unless the engine- necessity. Reference to Fig. 1 will enablethe reader to clearly understand the man-ner in which this was accomplished. Themain line now traverses the valley of theKicking Horse River between these twostations with an increased length of and a maximum grade
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