FIG. 14 B.-No. 6 Distributing Valve. Recharging Copyright, 1909, by The Norman W. Henley Publishing Co. AUT CALIFORNIA - PIPE FEED VALVE EXHAUST STEAM LIVE STEAM PIPE BRAKE VALVE BRAKE PIPE MAIN BRAKE CYLINDER im No. 6 ET Equipment. Colors showing sequence of pressures at automatic-brake release. brake-valve in release position, independent brake-valve in running position. Holding Effect of Locomotive Brake In the DISTRIBUTING VALVE, FIG. 14 B, the increase of brake-pipe pressure in chamber p has forced the equalizing portion to release position, but as there can be no automatic release until the distributing-valve release pipe from IV shall be re-opened to the atmosphere by the automatic brake-valve being returned to running position, the only effect is to re-connect the application chamber with the application cylinder, and their combined volume with the distributing-valve release pipe. With no release of application-cylinder air, piston 10 and application valve 5, and exhaust valve 16, remain in the lapped condition as shown; there is no maintaining pressure being now supplied to the application cylinder, and the safety valve is seated. If the release position of the automatic brake-valve had followed a service application, there would be no change made whatever in the distributing-valve pressures; but with the recharge of the brake pipe after an emergency application the application chamber is found empty of pressure, and its consequent equalization with the application cylinder when the equalizing valve is moved to release position somewhat reduces the pressure of the application cylinder, and this should be followed by a movement of application piston 10 to the left and a quick "pop" of brake-cylinder pressure escaping from the exhaust port at EX; the pressure in chamber b being thus relieved of its excess over that in |