Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . 265 ;254 Figure 264New York Straight Air Brake Pressure Reducing Valve spring is supposed to be adjusted to forty-five pounds,it will readily be seen by reference to Fig. 264, thatthe force of the spring will drive the diaphragm downso that it will unseat the check valve 26. Therefore,when no air is in the brake cylinder, the main reser-voir pressure can pass by the check valve, and out 6i6 LOCOMOTIVE ENGINEERING through the pipe
Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . 265 ;254 Figure 264New York Straight Air Brake Pressure Reducing Valve spring is supposed to be adjusted to forty-five pounds,it will readily be seen by reference to Fig. 264, thatthe force of the spring will drive the diaphragm downso that it will unseat the check valve 26. Therefore,when no air is in the brake cylinder, the main reser-voir pressure can pass by the check valve, and out 6i6 LOCOMOTIVE ENGINEERING through the pipe connection leading to the straight airbrake valve, and when the pressure under the dia-phragm becomes a fraction greater than that forwhich the regulating spring 20 is adjusted, the dia-phragm will be moved up, thereby allowing the check valve to reseat and shut offthe main reservoir pressure,but should the brake cylinderleathers leak, and thus in ashort time bring the pressuredown below the tension of thegraduating spring, the dia-. 14 I I 13 05 02 phragm will be forced downand again unseat the checkvalve to admit main air pres-sure. This action enables theengineer to place the straightair brake valve in service posi-tion, and do any repair workunder his engine with perfectsafety, for the reason that aslong as the air pump works,the straight air brake valve willautomatically supply mainreservoir pressure to the brakeFigure 265 cylinders, and thus keep the New York Safety Valve engine from moving. One ofWith Hand Release the greatest benefits that thestraight air brake valve confers in road service is, that itenables the engineer to set the engine brakes inde-pendently of the train brakes, so that in slowingdown, or in making a stop, he can keep the trainbunched, and thereby prevent a break-in-two. Thesafety valve, Fig. 265, on the brake cylinders, is for 07 -jj- PIPE THREAD /.;•-:?
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectlocomot, bookyear1916
