. Factory and industrial management. essitated the bendingof the side frames outward to increase the width by 5 inches, this bend-ing being done carefully after the side plates are bored, punched, andslotted in bundles of four. The plates are i inch thick, of Siemens-Martin mild steel or flussciseii, and very solidly braced together. Thevalve gear is Waelschaert-Heusingers, worked from an outside rock-ing shaft, a method of transmission adopted because it enables thecranked axle to be made of the simplest form possible, since thereare no eccentrics, with their well-known disadvantages as compa
. Factory and industrial management. essitated the bendingof the side frames outward to increase the width by 5 inches, this bend-ing being done carefully after the side plates are bored, punched, andslotted in bundles of four. The plates are i inch thick, of Siemens-Martin mild steel or flussciseii, and very solidly braced together. Thevalve gear is Waelschaert-Heusingers, worked from an outside rock-ing shaft, a method of transmission adopted because it enables thecranked axle to be made of the simplest form possible, since thereare no eccentrics, with their well-known disadvantages as comparedwith an outside eccentric crank, avoiding beside the inconveniencewith large eccentrics for getting at the inside main-rod big ends. The expansion links are located inside the frames, and the valve-chests, with partially balanced valves, are placed above the cylinders,inclined toward the outside and easily accessible. The cylinders andvalve-chests are cast in one piece at the foundry of the adjoining 686 THE ENGINEERING THE MOST POWERFUL ENGINE EXHIBITED AT PARIS—THE TWELVE-WHEEL COMPOUNDOF THE MOSCOW-KAZAN RAILWAY. works of the renowned firm, Sulzer, and are fitted with a half-auto-matic starting valve having a double-seated piston valve and combinedauxiliary valve for live-steam admission. On starting, and when thereversing screw is at one or the other extreme end of its travel, eachof the two cylinders receives steam direct from the boiler and exhaustsdirect to the chimney, independently as in a single engine. In linkingup to a position corresponding to a cut-off of 70 per cent, this valve isreversed and compound working commences. This action may beeasily observed in engines leaving stations by the slower and quieterexhaust which takes place after the machine is well started. Themain driving rods are of nickel steel from Krupps and the connectingand coupling rods are of Siemens-Martin steel. The blast pipe is ofannular invariable type with its orifice level
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Keywords: ., bookcentury1800, bookdecade1890, booksubj, booksubjectengineering
