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Each vehicle of a vacuum braked train will have a cylinder with a partial vacuum on both the "train pipe" and reservoir sides of the piston while the brakes are off. The brakes are applied by allowing air into the train pipe side, the resulting pressure differential will put the brakes on. The vacuum is originally supplied from the locomotive (see entry for ejector) via the train pipe, and a one-way valve ensures that the vacuum is maintained in the reservoirs on each vehicle. The train pipe runs the length of the train thus providing a fail-safe system should the train part.
A flexible pipe usually seen just above a buffer beam. The pipe may be connected to a similar pipe on another vehicle so as to form a continuous vacuum line (Usually referred to as the train pipe) between vehicles.
A pump actuated by a rod fixed to the cross-head on a steam locomotive and used to create a vacuum for the braking system.
The system of rods and cranks which connect the pistons and valves to the wheels and controls the admission of steam to the cylinders.
A rod which is connected to the moving part of a valve, and which passes through one end of a steam chest.
A roofed railway goods-vehicle.
The area at the end of corridor and saloon coaches, from which access may be gained to the side corridor or central passageway, outside doors, W.C. (if any), and corridor connection to the next coach (if any).
A railway structure which is used to carry railway tracks above the general level of the ground and is usually made up of a continuous series of bridges or trestles.
A type of hydraulic transmission that uses several torque converters to cover a range of speeds. Developed by the German, J.M.Voith company for railway use in the 1930's.