. American engineer and railroad journal . — *-=- --c-ir4 ■-■ 1 •. 10NNECTING 1 »sii\i. ITTACHED TO FRONT FR back of the valve chamber to a b in. opening in the center at thetop, to which the pipes leading forward are connected by balljoints. The walls of the steam chest are normally lJ4 ill. thickand the center of the valve is set 4H in. outside of the center ofthe cylinder. The relief or drifting valves of the Sheedy typeconsist very simply of a 5 in. passage cored in the casting backof and between the valve chamber and cylinder, having a con-nection at either end to the cylinder steam
. American engineer and railroad journal . — *-=- --c-ir4 ■-■ 1 •. 10NNECTING 1 »sii\i. ITTACHED TO FRONT FR back of the valve chamber to a b in. opening in the center at thetop, to which the pipes leading forward are connected by balljoints. The walls of the steam chest are normally lJ4 ill. thickand the center of the valve is set 4H in. outside of the center ofthe cylinder. The relief or drifting valves of the Sheedy typeconsist very simply of a 5 in. passage cored in the casting backof and between the valve chamber and cylinder, having a con-nection at either end to the cylinder steam port. At eitherend of this passage is a valve held open by a spring, which iseasily compressed and the valve closed when steam is admittedto the cylinder. It remains open when the steam is shut off andgives a free passage from one end of the cylinder to the other. Eight-inch exhaust pipes are carried forward along the boilershell from the II. P. cylinder to the front end of the reheater inthe smoke box. These pipes are fitted with a slip joint near theirconnec
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
