. Locomotive engineering : a practical journal of railway motive power and rolling stock . he air brake must work lifelong work of the inventor of thetriple valve has been on lines that wouldinsure the movement of the piston in eitherdirection by differential pressures, withouthelp or interference, and experience hasdecreed that the recharging device shallbe separate and distinct from the triple-valve mechanisms; hence, the use of thepressure-retaining valve and the rejectionof devices contained in or attached to thetriple-valve mechanism. (65) J. S., Quincy, 111., writes; I. Wh
. Locomotive engineering : a practical journal of railway motive power and rolling stock . he air brake must work lifelong work of the inventor of thetriple valve has been on lines that wouldinsure the movement of the piston in eitherdirection by differential pressures, withouthelp or interference, and experience hasdecreed that the recharging device shallbe separate and distinct from the triple-valve mechanisms; hence, the use of thepressure-retaining valve and the rejectionof devices contained in or attached to thetriple-valve mechanism. (65) J. S., Quincy, 111., writes; I. What is the matter with a D-8 brakevalve that will not set the brakes in theservice application, the valve being allright? 2. What pressure is had in thebrake cylinder with an emergency appli-cation? I know it is claimed that 10 percent, of the train-line pressure goes in, butwhat is the total pressure? 3. In a three-car train, the first car having a lo-inch cyl-inder with lo-inch travel, the second carhaving an 8-inch cylinder with 8-inch tra-vel, and the third car with a lo-inch cylin-. M. & O. PIPE CLAMP. be made that would not permit this schemebeing worked. This question is a half-brother to Question No. 52 in Augustnumber of Locomotive Engineering,and while affording good food for thought,its usefulness ends there. Its applicationto practice would be disappointing and un-satisfactory. (64) J. W. C, Waco, Tex., writes:I have studied out a plan whereby I canrecharge reservoirs while brakesare applied, without the use of an extrapipe or hose. The device can be used inconnection with the Westinghouse quick-action triple, and would cost but inform me whether the necessityfor such a device would justify the rail-roads in going to this additional cost. Ihave been informed that such improve-ments have been invented by others, butI do not understand why they have notbeen adopted. A.—Triple valves thatwould recharge the auxiliary reservoirswhile brakes were
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
