8. Q. Name the different parts of the air brake as applied to a car.
A. The triple valve, auxiliary reservoir, brake cylinder, brake pipe, angle cocks, cut-out cock, retaining valve, centrifugal dirt collector and strainer tee.
9. Q. What is the duty of the triple valve?
A. The triple valve has three duties to perform: Charge the auxiliary reservoir; apply the brake; and release the brake.
10. Q. What is the purpose of the auxiliary reservoir?
A. It is here that the air is stored that is admitted to the brake cylinder when the brake is applied; thus, each car carries its own brake power.
11. Q. What is the purpose of the brake cylinder?
A. It is here where the power of the compressed air is converted into work by forcing the brake piston out, moving the brake levers, rods and brake beams, forcing the brake shoes against the wheels, applying the brake.
12. Q. What is the purpose of the brake pipe and angle cocks?
A. It is through the brake pipe that all brakes in the train are placed into communication with the brake valve on the locomotive; and through the brake pipe, air from the main reservoir flows to the triple valves and auxiliary reservoirs on the different cars. The angle cocks are for the purpose of opening and closing the ends of the brake pipe.