. American engineer and railroad journal . plston-valve Into one, and is patented by Mr. Edward Heyde, , with Wiekcs Brothers, of Bagman . Mich. We wish to call especial attention to the Heyde valve thatis used on this engine, and of which we present a separate engraving, although tin- latter docs not illustrate the valve thatis used on this particular engine. The great trouble that hasheretofore been experienced with this type of valve lay in thefact that the rings were apt to catch in the ports if they wereallowed to travel over them, and that the wear resulted in badleakages of steam p
. American engineer and railroad journal . plston-valve Into one, and is patented by Mr. Edward Heyde, , with Wiekcs Brothers, of Bagman . Mich. We wish to call especial attention to the Heyde valve thatis used on this engine, and of which we present a separate engraving, although tin- latter docs not illustrate the valve thatis used on this particular engine. The great trouble that hasheretofore been experienced with this type of valve lay in thefact that the rings were apt to catch in the ports if they wereallowed to travel over them, and that the wear resulted in badleakages of steam past the packing. With this arrangementit will be seen that the bottom face of the valve is kept solid,and that the rings merely stand out on the back to serve asbalancing packing, and that if they were removed the valvewould work on as usual with the exception that it would nolonger be balanced. The low-pressure valve is 10 in. in diameter, fitted with a self-setting spring ring aud having 1 in. lap on both ends. All. TRIPLE EXPANSION ENGINE FOR THE STEAM YACHT WAPITI, BUILT BY F. W. WHEELER & CO., WEST BAY CITY, MICH. hausts at both ends into a receiver connected with the middleof the intermediate-pressure valve, from which it exhausts atboth ends into the low-pressure valve in the usual way, theexhaust this time being carried by the inside of the valve tothe condenser. All the cylinders are fitted with piston-valves,and the ports in all valve-chests are 1J in. deep. The high-pressure valve is 54. in. in diameter of the Heydepatent type, with a lap of l{\r in. at top and | in. on intermediate valve is also of the Heyde type, and is9 in. diameter with the same laps as the high-pressure. Theports in the valve-chamber extend only half around, and thevalve is kept absolutely steam-tight by the half circular springring on the opposite side of the ports pressing the valve againstthe liner, the other half of the ring being pinned to the valvemaking a solid plug-valve. This
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
