A. To apply the locomotive brake quickly, as in short switching.
115. Q. What brake cylinder pressure is usually developed with this brake?
A. About forty-five pounds.
DEAD ENGINE FEATURE
116. Q. What is the dead engine device?
A. The dead engine device is a pipe connection between the main reservoir and the brake pipe. In this pipe is found a combined strainer and check valve with a choke fitting and cut-out cock, which when open forms a connection between the brake pipe and the main reservoir.
117. Q. What is the purpose of this device?
A. To provide a means of charging the main reservoir of an engine whose compressor is inoperative.
118. Q. What is the object of charging a main reservoir of an engine with a disabled compressor?
A. As the air used in the locomotive brake cylinders comes from the main reservoir, for the brakes to be operated on this engine it is necessary that its main reservoir be charged.