. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . in emergency appli-cation, and as little as possible kak pastthe outeredges of the emergency outer edges frequently wear quiterapidly and uncertainly, thereby letting aconsiderable quantity of pressure leak pastin the emergency application. With thepacking ring no air is supposed to leakpast the edges of the piston, and all leak-age is obliged to pass through the smallport in the piston. The freight valves are Soine few roads now using the high speedbrake, having equipped hurried
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . in emergency appli-cation, and as little as possible kak pastthe outeredges of the emergency outer edges frequently wear quiterapidly and uncertainly, thereby letting aconsiderable quantity of pressure leak pastin the emergency application. With thepacking ring no air is supposed to leakpast the edges of the piston, and all leak-age is obliged to pass through the smallport in the piston. The freight valves are Soine few roads now using the high speedbrake, having equipped hurriedly, neg-lected to replace the old plain triple witha quick action triple at the time the changefrom ordinary brakes was made to highspeed brakes. These roads, however, arenow taking off the plain triples from theirtenders and putting on the quick actiontriples. This is good practice. We do notfeel that it would be good practice, how-ever, to equip tenders in ordinary service,that is, not in high speed brake service,with quick action triple valves. If yourtender seems to be so heavy that the plain. Fig. ).—TKIPLE V.\LVE TESTING MACHINE, CKKEN ISI,.\XD SHOPS, I^ &HUDS3N RAILRO.\D.—C0URTE=;Y ,OF A. BtlCHANAN, JR., MASTER MECHANIC. rot so equipped inasmuch that their trainpipe is larger and there is less necessity forlooking after the amount of air passing byemergency piston in emergency application.(188) J. E. G., Needles, Cal., writes:The question of plain or quick actiontriples for tenders has arisen, owing topoor service given on one of our largefreight engines. Is it good practice toequip engines with quick action triples?Are there any roads that do so? A—There are no roads using quick actiontriple valves on their tenders in ordinaryair brake service; but those roads usingthe high speed brake for their tenders areequipped with quick action triple valves. triple valve does not do satisfactory work,it might seem better to increase yourbraking power through the med
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
