. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . usea neatly fitted equalizing piston and astandard packing ring such as used intriple valves, the leakage from the brakepipe into the equalizing reservoir becamea negligible quantity and shortly thereaftersome cases of undesired quick action weretraced to what appeared to be an unneces- H-3 CHANGE-OVER VALVE A 1/16-inch opening to the atmospherewill reduce the pressure in the 1( reservoir (which has been thestandard size since the introduction of thehigh-speed brake) and the a
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . usea neatly fitted equalizing piston and astandard packing ring such as used intriple valves, the leakage from the brakepipe into the equalizing reservoir becamea negligible quantity and shortly thereaftersome cases of undesired quick action weretraced to what appeared to be an unneces- H-3 CHANGE-OVER VALVE A 1/16-inch opening to the atmospherewill reduce the pressure in the 1( reservoir (which has been thestandard size since the introduction of thehigh-speed brake) and the average brakevalve pipe connection from 11(1 to 90 lbs.,in from 5j to 6 seconds time, and if aconsiderably longer time is required it in-dicates leakage into the equalizing reser-voir which adds to the volume of ■ m-pressd air to be expanded, hence if therate of reduction is toi slow and it is ATMOSPHERE^TO LOAD CYLINDERTO RETAINING VALVE FOUR COMPARTMENT RESERVOIR <f AUXILIARYRESERVOIR REDUCTIONRESERVOIR izzuzzzzziiir-^ TAKE UPRESERVOIR SJ= r^T ~ri r ■ TO EMPTYCYLINDER LOADRESERVOIR 1 ■-*. EMERGENCE POSITION. CHANGE-OVER \\l\l l\ LOAD as a friction ring, was used and it wasintended as much for the purpose of giv-ing a certain stability to the movement ofthe piston as to prevent undue leakagepast the ring. The inevitable friction ring, or packingring leakage, was always a variable quan-tity and as a general proposition, every-thing else being equal, the looser thepiston in its bushing the greater the leak-age past the ring during a brake applica-tion, and with the then standard 5/64inch opening through the preliminary ex-haust port bushing the rate of equalizingreservoir reduction from 110 lbs. to 90 sarily rapid rate of equalizing reservoir re-duction. Upon an investigation it was foundthat this reduction from 110 to 90 lbs. wastaking place, in some instances, in considerably less than 5 seconds time and itwas generally agreed that this should takeplace in approximatel
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Keywords: ., bookcentury1900, bookdecade1900, bookidrailwaylocom, bookyear1901
