. Railway mechanical engineer . ed for the brake equipment. Several classes of tank engines are em[)loyed on the NorthEastern Railway both with two and three cylinders. The 428 RAILWAY MECHANICAL ENGINEER Vol. 91, No. 8 latest t)-pe has three cylinders, and particulars of these willbe found in the table of dimensions. The passenger enginesare of the 4-4-4 tj-pe. The three cylinders, together withtheir valve chests, are cast in one piece. The leading axleis the crank axle and the crank pins are 120 deg. sets of link motion, the reversing of which is done bya steam gear, operate the
. Railway mechanical engineer . ed for the brake equipment. Several classes of tank engines are em[)loyed on the NorthEastern Railway both with two and three cylinders. The 428 RAILWAY MECHANICAL ENGINEER Vol. 91, No. 8 latest t)-pe has three cylinders, and particulars of these willbe found in the table of dimensions. The passenger enginesare of the 4-4-4 tj-pe. The three cylinders, together withtheir valve chests, are cast in one piece. The leading axleis the crank axle and the crank pins are 120 deg. sets of link motion, the reversing of which is done bya steam gear, operate the piston valves direct, giving outside The 4-S-O engine is fo: yard work and is similar in thearrangement of its motion to the passenger engines exceptthat the valve for the centre cylinder is driven through arocking lever, which, as the valves have end admission,necessitates the use of crossed rods. The same arrangementis used on the 4-6-2 engines. In each case the leadingcoupled axle is the crank axle. For yard work and general. Three-Cylinder Tank Locomotive for Passenger Service, North Eastern Railway admission. The valve for the centre cylinder is on thetop with its axis inclined downwards to the centre of thecrank axle. The valve chests for the outside cylinders areinside the frames at the side of their respective two four-wheel bogies are alike. Each journal is pro-vided with two coil springs taking the weight through crossbeams spanning the axle boxes. The leading springs of the service of an intermittent nature three-cylinder engines seemto offer distinct advantages. They are less complicated thanfour-crank arrangement and the writer favors their moregeneral adoption, either with simple or with compoundcylinders. The 0-6-4 engines used by the Midland were introducedto take the place of 0-4-4 locomotives originally used. They
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
