. American engineer and railroad journal . SCHMIDT IMPROVED SMOKE TUBE SUPERHEATER. rods are required or used. On account of the double admission,and owing to there being no bridges in the steam ports—the ringsbeing solid—the diameter of the piston-valves can be kept verysmall. An important point in favor of highly superheated steamis that its great tenuity makes the use of piston-valves of a com-paratively small diameter possible, even in the case of loco-motives designed for high-speed passenger service. To preventjamming of the solid rings, the steam-chest is steam-jacketed.* Forced lubrica
. American engineer and railroad journal . SCHMIDT IMPROVED SMOKE TUBE SUPERHEATER. rods are required or used. On account of the double admission,and owing to there being no bridges in the steam ports—the ringsbeing solid—the diameter of the piston-valves can be kept verysmall. An important point in favor of highly superheated steamis that its great tenuity makes the use of piston-valves of a com-paratively small diameter possible, even in the case of loco-motives designed for high-speed passenger service. To preventjamming of the solid rings, the steam-chest is steam-jacketed.* Forced lubrication, with mineral oil having a high flash-point,is used for the cylinders and valves, in order to insure efficientlubrication. The Frames are of the usual plate type employed abroad, andare 1 in. thick. The underhung springs of the back and inter-mediate drivers, together with the overhung springs of the frontdrivers and truck wheels, are equalized, so that the weight iscompensated between two distinct groups of wheels. The truck,how
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
