. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . be fromthe middle gasket of the brake valve asexplained, either main reservoir or brakepipe pressure could enter, or it might oc-cur through leaks from port to port, onthe face of the rotary valve and seat, andit might be due to a defective pipe bracketgasket. It should always be borne in mind thatthe action of the equalizing feature ofthe brake valve is such that, the equal-izing piston cannot be lifted, a differentiialin pressure surrounding it cannot be ob-tained. If it does lift the diffe
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . be fromthe middle gasket of the brake valve asexplained, either main reservoir or brakepipe pressure could enter, or it might oc-cur through leaks from port to port, onthe face of the rotary valve and seat, andit might be due to a defective pipe bracketgasket. It should always be borne in mind thatthe action of the equalizing feature ofthe brake valve is such that, the equal-izing piston cannot be lifted, a differentiialin pressure surrounding it cannot be ob-tained. If it does lift the differential inpressure has been created, but ther? is apossibility of the piston being lifted with-out resulting in a discharge of brake pipepressure should the exhaust port have been plugged for any reason and the re-moval of the plug had been neglected. In view of the series of articles on theII 0 brake, it is unnecessary to call at-tention to the points from which air couldenter the brake pipe from some other por-tion of the equipment and under certainconditions lift the equalizing The Luminator. A very interesting paper was recentlyread by Mr. T. R. Duggan before theSocietj of Chemical Industry in NewYork. Among other things the speakersaid: After a long period of experiment-ing and after many trials, an inventor,a German scientist, Herr Brandes, wasable to construct an apparatus whichgave to ordinary water, after simplyflowing over it, certain instance, when used in steam boil-ers, much less scale was deposited, oldscale was softened and detached fromthe plates, especially the flues, steamwas dryer, and less coal was requiredin steam-raising, and generally the saltswere found as a powder in the bottomof the boiler, whereas otherwise theywould have formed hard scale. This apparatus was studied in allits applications; it was simplified, andfinally this scientific method of treatingwater has been patented throughoutthe world. The invention is a rem
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