File:Railway and locomotive engineering - a practical journal of railway motive power and rolling stock (1916) (14760569332).jpg

Identifier: railwaylocomotiv29newy (find matches)
Title: Railway and locomotive engineering : a practical journal of railway motive power and rolling stock
Year: 1901 (1900s)
Authors:
Subjects: Railroads Locomotives
Publisher: New York : A. Sinclair Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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urnal of Motive 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 tile rcmarkalilc impniviincnts ingrade reductions on the principal railroadsin America it is doubtful if there is inAmerica a better illustration of what maybe done in the way of grade reduction inmountainous regions than the imijrove-ment of the Canadian Pacific railroad line latter to the Rogers Pass tuiuu-1 tliat isbeing driven through Mimnt Macdimalil inthe Selkirk Range. Prior to 1908 these two stations wereseparated by such extreme grades thatfour lS4-ton consolidation (2-8-0) loco-motives were required to haul a trainload driver of a descending train signalled tothe switchman that his train was undercontrol, the normal setting of one of thi.-seswitches would divert the train to a catchsiding. Increase in the density and extent oftraffic made great reduction practically a
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THE l..\( HINE C.\N.\L SWING SP.\X IX ITS OPEN AND CLOSED POSITIONS in British Columbia. It has invohed theconstruction, some six years ago, of oneof the most interesting systems of 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 4.5 per cent, prevailed, decreas-ing to 4 and 3.5 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 82miles and a maximum grade of 22 percent, (compensated). 74

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