. American engineer and railroad journal . mitted that this is a truth the average law-maker linds ithard to comprehend. A NEW VALVE FOR LOCOMOTIVE CYLINDERS In the JOLRNAi, for January, 1889, pages 43 and was described a new form of valve for steam-enginesdevised and jiatenled by Mr. F. D. Child, of West ; the drasvings given herewith show this valve as head E, which is connected to the valve-rods C Cby thetwo Hat connecting rods D D, one on each side of thecylinder. They may also be worked by having two rock-ers, one at each end of cylinder. There is a second bear-ing f
. American engineer and railroad journal . mitted that this is a truth the average law-maker linds ithard to comprehend. A NEW VALVE FOR LOCOMOTIVE CYLINDERS In the JOLRNAi, for January, 1889, pages 43 and was described a new form of valve for steam-enginesdevised and jiatenled by Mr. F. D. Child, of West ; the drasvings given herewith show this valve as head E, which is connected to the valve-rods C Cby thetwo Hat connecting rods D D, one on each side of thecylinder. They may also be worked by having two rock-ers, one at each end of cylinder. There is a second bear-ing for the rocker, which is bolted to guide-yoke, as this case the engine has the form of guides and cross-head shown, but the arrangement can readily be adaptedto double guides and a box cross-head. The arrangement of the steam and exhaust-ports isshown in section in fig. 3 While the valves shown are simply piston-valves of anannular form, the objects which the inventor has soughtto accomplish by their position and arrangement are :. CHILDS PISTON VALVE ON A LOCOMOTIVE CYLINDER. applied to a locomotive cylinder. Fig. i is a longitudinalsection of the cylinder and cross-head ; fig. 2. a plan ; , a cross-section through the center of the cylinder, andfig. 4, an end view showingthe front head. The draw-ings show a 17 X 24-in. cy-linder arranged to replace acylinder and steam-chest ofthe ordinary pattern on alocomotive which has beenalready in service. The peculiar features ofthis arrangement, which isespecially adapted for highspeeds, are that the valves,which are of the piston type,are not in a separate steamchest, but in the cylinder it-self. The ports run entirelyaround the cylinder and thevalves are annular in form,consisting of a ring in eachend of the cylinder. The method of working them is readily seen from the draw-ings ; .; ./ are the valves ; A is the rocker arm, and C Care the valve-rods ; F F are the ports. The valve at theback end of the cylinder is worked
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
