GB172345A - Improvements relating to heating systems for railway cars and the like - Google Patents

Abstract

172,345. Brougham, F. J., (Vapor Car Heating Co., Inc.). June 12, 1920. Fluid-actuated valves. - In a heating system for railway carriages and the like, the supply of steam or other heating medium is increased or decreased according to whether the signalling or other apparatus, which is connected up when the carriages are assembled, is in or out of action. Valves in the steam supply pipe of the radiators are maintained in their open position by the air pressure in the train pipe of the signalling system. The steam valve 25, Fig 2, may be set in half-open position by depressing a handle 42, which causes a lever 44 to engage with a lip on a sleeve 37 secured to the valve spindle so as to prevent the valve from being closed by the upward pressure of a spring 30. When air pressure is admitted above the piston 28, the steam is fully opened. and the lever 44 is withdrawn by a spring 49 from engagement with the sleeve on the valve spindle. A port 27 allows a small quantity of steam to pass to the radiator when the valve is closed. The supply of steam to the main and auxiliary radiators K, L, Fig. 3, is controlled for a four-way valve 84, operated by piston device 98 connected to the air-pipe M of the signalling system. A lever 95, Fig. 4, pivoted to the en'd of the piston-rod 96 rotates a member 93 having lugs adapted to engage in slots in a disc 90 on the end of the valve member. The valve may be operated by hand by raising it against the pressure of a spring 87 out of engagement with the lugs. The steam supply to the main radiator passes through a hand-operated valve 83.