. Electric railway journal . Steel Underframe op MilwaukeeCar posts to the vestibule corner posts. At each side post aH-in. x xV-in. steel carline forged to a shape to conformto the roof curvature is riveted to the top flange of theletter-boards. To each steel carline is bolted a H-in. xii-in. ash carline, and an additional intermediate woodcarline is provided between each set of main carlinesbetween bulkheads. A very light roof construction was secured by using. Specially Designed Arch Bar Truck of Light Weight 1-in. x 2 !-in. poplar, tongue and grooved, covered withNo. 8 cotton duck laid in
. Electric railway journal . Steel Underframe op MilwaukeeCar posts to the vestibule corner posts. At each side post aH-in. x xV-in. steel carline forged to a shape to conformto the roof curvature is riveted to the top flange of theletter-boards. To each steel carline is bolted a H-in. xii-in. ash carline, and an additional intermediate woodcarline is provided between each set of main carlinesbetween bulkheads. A very light roof construction was secured by using. Specially Designed Arch Bar Truck of Light Weight 1-in. x 2 !-in. poplar, tongue and grooved, covered withNo. 8 cotton duck laid in white lead and oil. Insidethe body, headlining of isr-in. agasote is used, but noheadlining is provided in the vestibules. The interiortrim is in cherry, with all furring designed to serve itspurpose with the least possible weight. The doubleflooring is made up of an under layer of f-in. yellow pinewith i-in. maple on top. Design of the Trucks The low weight of 4,300 lb. per truck without motorswas obtained through the use of chrome vanadium steelin the arch bars. The use of this special alloy steelfor the side-frame members made it possible to employa lighter section with safety and hence reduce theweight. The elastic limit of these special steel membersis 50 per cent greater than that of ordinary steel, acharacteristic which is expected to avoid the troublewhich some companies have had in the past with break-ing the bottom arch bar. The top arch bar of
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
