. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . Brake Cylinder. The brake cylinder employed is illustratedin Fig. 153. The piston S is connected to the brake rigging insuch a manner that it moves onlywhen the power brake is the hand brake (if pro-vided) is used, no movement ofthe piston occurs. The pistonrod is made hollow to receive thepush rod Hy which is attached tothe levers of the foundation brakegear. The release spring 9 forcesthe piston to release positionwhen the air pressure is ex-haust
. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . Brake Cylinder. The brake cylinder employed is illustratedin Fig. 153. The piston S is connected to the brake rigging insuch a manner that it moves onlywhen the power brake is the hand brake (if pro-vided) is used, no movement ofthe piston occurs. The pistonrod is made hollow to receive thepush rod Hy which is attached tothe levers of the foundation brakegear. The release spring 9 forcesthe piston to release positionwhen the air pressure is ex-hausted from the brake packing leather 7 is heldagainst the cylinder wall by theexpander 8 which insures an air-tight piston. Conductors Valve. This valve is located in a convenientposition in the car and is preferably fitted with a cord attached. Fig. 151. Westinghouse Type DEmergency Valve 192 AIR BRAKES to its handle and running the entire length of the car. It is to beused only in eases of necessity or emergency. It is connected to
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