. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . all sizes of boxcars in existence, or contemplated in thenear future, which might be used at any time for the transportation of grain, and,in the design of the unloaders at PortArthur, due consideration was given to thefollowing: (a) Weight of all box carsand contents; (b) variation of length,width, and height of all box cars; (c)variation in elevation of floor of box cars,both when loaded and unloaded; (d) vari-ation in width and height of grain doors. The result of a thorough considerationo
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . all sizes of boxcars in existence, or contemplated in thenear future, which might be used at any time for the transportation of grain, and,in the design of the unloaders at PortArthur, due consideration was given to thefollowing: (a) Weight of all box carsand contents; (b) variation of length,width, and height of all box cars; (c)variation in elevation of floor of box cars,both when loaded and unloaded; (d) vari-ation in width and height of grain doors. The result of a thorough considerationof all theiie points is that the unloaders locks to definitely support the ends of thecradle while cars are being taken on andoff, and with collapsible end bumpers tobring the car to a central position on thecradle, clamp the car in this position, andtake the total end thrust on the couplingsof the car during the time the car is tiltedat any angle to the horizontal in either di-rection. One side of the cradle is providedwith heavy structural steel brackets whichcarry the door opening mechanism, two. GENER.\L ARR.\NGEMENT OF BOX CAR UNLOADER FOR GRAIN have been built to cover all possible vari-ations in the above mentioned features ofbox cars, with the possible exception of afew freak cars. GENERAL DESCRIPTION The unloaders consist of a heavy struc-tural rocking cradle, capable of beingtipped with its longitudinal axis at a maxi-mum elevation of 45° to the horizontal ineither direction. This cradle carries thecar of grain, and is provided with end deflecting baffles, and baffle operating me-chanism. Between these brackets and op-posite to the grain door is a deflectinghopper or chute to insure the grain beingcarried well into the center of the receiv-ing hopper. Steel gratings are providedto protect the chute and to cover all theopen spaces around the unloader. Flex-ible deflectors are also provided to preventany spillage of grain along the side of thewalls of the car, or in any
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