Apparatus for producing snow deflecting air curtains for railway

Details Apparatus for producing snow deflecting air curtains for railway Apparatus for producing snow deflecting air curtains for railway

1974-12-18

1976-08-03

Paperner, L. J.

Railway switches and signals

Switches

Snow protected

104279, E01B 700

Patent

active

039724972

ABSTRACT:
An apparatus for producing snow deflecting air curtains for a railway switch comprising one (or two side-by-side) ducts along the center of the railway switch and having nozzle slits for directing snow-deflecting air curtains in opposite directions over each pair of rails consisting of one fixed and one movable rail. The duct internal cross-section tapers so that air passes therealong at a more or less constant velocity from an air blower connected to the conduit. The air curtains issue from the nozzle slits at at least one hundred feet per second and preferably travel along a path which inclines upwardly from the horizontal about 5.degree..

REFERENCES:
patent: 1298891 (1919-04-01), Chausse
patent: 1718271 (1929-06-01), Adams
patent: 2812980 (1957-11-01), Kadosch et al.
patent: 2894704 (1959-07-01), Bone
patent: 3223835 (1965-12-01), Cherry et al.
patent: 3697746 (1972-10-01), Patterson et al.

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