Improvements in Cowls or Air Inlets for the Supply of Fresh Air to, and the Extraction of Impure Air from, Railway Coaches, Tram Cars, Ships, and other Vehicles.

摘要

10,311. Stone & Co., J., and Darker, A. H. April 30. Ventilators.-Relates to railway-carriage ventilators of the kind in which a conduit, having a constricted portion, is provided with lateral apertures for admitting pure air to the carriage, while cinders &c. and the rest of the air pass through the conduit. According to the present invention, a duct, having a flaring mouthpiece f, Fig. 5, leads to the inner space g, which is separated from an inner space h by a perforated partition j. At the end of the space g is fitted a chest k having a pointed end l so that cinders are deflected into the side passages m and make their escape at the rear end of the duct. Pure air passes through the perforated screen j into the air-chest k. In a modification, a pair of flaring mouths q, Fig. 10, are provided with perforated sides which enclose an airchest x. Cinder-laden air is deflected through the passage r. The air-chest is provided with a pair of pivoted valves w which automatically prevent through draught and suction. In a somewhat similar construction, the conduit leading to the space to be ventilated is surrounded by a heating or cooling medium. In another form, the air-chest x, Fig. 14, is divided by partitions 41, and the duct is provided with a grid valve 12 so that the ducts 8 may be made both downcast, or one downcast and the other upcast. In further modifications, the underside of the perforated partition 2 is provided with louver or baffle plates to prevent the impact of cinders &c. with the perforated part.