. Railway mechanical engineer . t one commodity, grain. This car wasconstructed to determine by actual service test the net ad-vantages to be obtained from a grain-tight self-clearing carof tonnage capacity, as compared to standard boxcars of ordinarj- capacity. The limiting tonnage adopted as the basis of the design The car is all-steel, with the exception of the runningboard and the ridge on top of the center sill. The generaldesign is practically the same as is commonly used for coalcars of equal capacity, except that this car is built with asteel roof. The roof is provided with th
. Railway mechanical engineer . t one commodity, grain. This car wasconstructed to determine by actual service test the net ad-vantages to be obtained from a grain-tight self-clearing carof tonnage capacity, as compared to standard boxcars of ordinarj- capacity. The limiting tonnage adopted as the basis of the design The car is all-steel, with the exception of the runningboard and the ridge on top of the center sill. The generaldesign is practically the same as is commonly used for coalcars of equal capacity, except that this car is built with asteel roof. The roof is provided with three hatch openingson each side of the running board, which are located re-spectively at the center of the car and directly above the two-end hoppers. The hoppers are arranged four on each side of the centersill. The hopper openings are purposely made relativelysmall and the frame and slides are machined and carefullyfitted. The slides are opened and closed by a rack andpinion arrangement and are locked by means of a sealing pin. Canadian Pacific 75-Ton Hopper Grain Car is the maximum capacity of four M. C. B. axles having6-in. by 11-in. journals. The length was determined by thedistance from center to center of unloading hoppers in themodern elevators at Montreal and West St. John, there be-ing one elevator having hopper centers spaced 48 ft. Theheight was determined by the actual cubic space requiredto contain the full load of wheat, plus an allowance of atleast 12 in. on top to permit of full load being placed inthe car without trimming. To meet this condition it wasnecessarj- to make the height at the eaves ft. The widthat the eaves is 10 ft. 3 in. passing through the slide and hopper frame. The trucksare of the Vulcan type built to U. S. R. A. light weight is 59,700 lb., making the allowable loadlimit 150,000 lb. The car having given satisfactorj performance on itsinitial trip between Port McNicoll, Ontario and Montreal,it has been placed in regular servi
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
