2.70 



NO. 6 E T LOCOMOTIVE BRAKE 



emergency application is made, they operate to vent some of the 

 brake-pipe air to the locomotive-brake cylinders. The brake- 

 pipe air vented to the locomotive brake cylinders by the quick- 

 action cylinder cap does not give any higher brake-cylinder 



fr BraAe P//?e 



pressure, but causes a local reduction in brake-pipe pressure 

 that insures the quick-action operation of the train brakes. 

 The positions of the various parts, when the valve is in auto- 

 matic emergency position, are as here shown. 



