. American engineer and railroad journal . The design which was prepared by the builders representstheir most approved practice for engines of this class, embody-ing as it does in one engine practically all the new featureswhich have been successfully applied by lliein during the past maintain the schedule these new engines will have to handle12 cars on the up grades at the same speed as the present typehandles the lighter trains. Like the class which they supersede, the engines here illus-trated are equipped with fire tube superheaters of the side headertype. Their weight of 258,000 pounds an
. American engineer and railroad journal . The design which was prepared by the builders representstheir most approved practice for engines of this class, embody-ing as it does in one engine practically all the new featureswhich have been successfully applied by lliein during the past maintain the schedule these new engines will have to handle12 cars on the up grades at the same speed as the present typehandles the lighter trains. Like the class which they supersede, the engines here illus-trated are equipped with fire tube superheaters of the side headertype. Their weight of 258,000 pounds and tractive power ,200 pounds places them among the most powerful engines oftheir class. Among the new features embodied in this designwill be noticed the steam pipe arrangenitnt having an outsideconnection with the cylinders. A similar arrangement was ap-plied by these builders to a recent order of Pacilic type locomo-tives built for the New York Central, and in a number ofother instances. This arrangemeiu prnvides more fret area in. .\EW 4-6-2 LOCOMOTIVE FOR THE SCO LINE. 1911. 158,000 25 X 26 75 ISO 805 33,200 two years to other engines of a similar class. Tliey constitutethe latest of an interesting series of design of Pacific type lo-comotives, each one heavier and more powerful than the pre-ceding. The story of this development on the Soo Line is told by thefollowing table, and is typical of what other roads have had todo in their effort to meet increased requirements or to improveservice. ,,, . Year. 1904-1909. 1910. Weight on driving wheels, lbs 131,000 147,500 Total weight, lbs 221,000 Cylinders diameter and stroke, in. .. 20x26 244x26 Driving wheels, diameter, in 69 69 Boiler pressure, pounds per sq. in. . 200 IGO Total heating surface, sq. ft 2, 2,876 Superheater heating surface, sq. ft 515 Grate area, sq. ft 43 9 47 Tractive power, lbs 25,600 30,800 During seven years, from 1904 to 1911, there has been an in-crease in weight of 52
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
