. The locomotive engineer . Tifcj Cepirne. Bistlsci ud iBlepealiM Tjlrti IB Oat Cue. Isinrtoe FcecdDB froa DlWUsB, ltd obTiillnj dlffl- coltlH crptrteGHd wltb sld- !i!-l( sHels T»h<. POPULAR WITH ENGINEERS II7.^r^r,r Trifd. J. E. LQNERGAN & CO., Locomolivc Pop Solely ValvGuide and Rod Oil Cupi, Ral 211 RAGES7., PHILADELPHIA. I A New Piston Valve. The pisum valve lias always been thesubject of more or less thought by invent-ors. The perfect balance and ease ofhandling the engine has always been anincentive to the successful solving of thepiston valve problem, butwhen they got into the b
. The locomotive engineer . Tifcj Cepirne. Bistlsci ud iBlepealiM Tjlrti IB Oat Cue. Isinrtoe FcecdDB froa DlWUsB, ltd obTiillnj dlffl- coltlH crptrteGHd wltb sld- !i!-l( sHels T»h<. POPULAR WITH ENGINEERS II7.^r^r,r Trifd. J. E. LQNERGAN & CO., Locomolivc Pop Solely ValvGuide and Rod Oil Cupi, Ral 211 RAGES7., PHILADELPHIA. I A New Piston Valve. The pisum valve lias always been thesubject of more or less thought by invent-ors. The perfect balance and ease ofhandling the engine has always been anincentive to the successful solving of thepiston valve problem, butwhen they got into the busi-ness deeply enough theyhave always found practicalobstacles that have madetheir inventions of no practi-cal value. The chief obstaclehas been that, to keep thepacking rings of the valvefrom catching in the portand breaking, it was foundnecessary to make multipli-pons—a row of holes instead of an open port. Thi-,at best, is a bad devici,and was alone enough ii ■kill the piston valve for loco-motives; another troublewas the proper relief of the valve andcylinder pistons, when running with steamshut off they became pumps that wereconstantly drawing dust and cinders intothe steam chest and cutting the valvesto pieces. An ordinary D valve will liftoff its scat and relieve the pressure of airin the cylinder if the engine i
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1888
