. Railway mechanical engineer . ± October, 1917 RAILWAY MECHANICAL ENGINEER 547 the other two on a specialy designed turret, placed over thefirebox and immediately in front of the cab. Two whistlesare also mounted on this turret, and the rigging is so ar-ranged that one of them can be blown from the train, bymeans of an outside cord connection. The throttle valve is of the sliding type, in accordance with. This construction replaces the single damper opening in tliebottom of the box, which is ordinarily used in American loco-motives. The cylinders are of the two-piece type, designedin accordan
. Railway mechanical engineer . ± October, 1917 RAILWAY MECHANICAL ENGINEER 547 the other two on a specialy designed turret, placed over thefirebox and immediately in front of the cab. Two whistlesare also mounted on this turret, and the rigging is so ar-ranged that one of them can be blown from the train, bymeans of an outside cord connection. The throttle valve is of the sliding type, in accordance with. This construction replaces the single damper opening in tliebottom of the box, which is ordinarily used in American loco-motives. The cylinders are of the two-piece type, designedin accordance with American practice. The steam distribu-tion is controlled by I2-in. piston valves. These are fitted,at each end, with light cast steel heads and spiders, betweenwhich is placed a cast-iron bull ring. The heads and spidersare mounted on the valve stem, which is extended throughthe front head. The packing rings and steam chest bush-ings are of gun-iron. The Walschaert valve gear is applied, A View of the Back Boiler Head with the Cab Removed Russian practice with a small auxiliary valve which opensfirst, facilitating the opening of the large valve and this samesmall valve is used when drifting on engines which have noby-pass valves. It has outside connections with the lever inthe cab and is arranged to open with a downward piovementof the slide. There are two ports in the vertical throttle-pip
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
