Railway double tongue switch

Details Railway double tongue switch Railway double tongue switch

1979-03-05

1981-02-17

Blix, Trygve M.

Railway switches and signals

Switches

Point

246442, 246444, E01B 704

Patent

active

042510422

ABSTRACT:
A double tongue switch comprises a pair of identical and interchangeable switch assemblies, each of which has a rectangular body with vertical outer walls. Each switch tongue includes a pair of full-width railheads of increased thickness. Each body includes a continuous central support wall beneath the traffic-carrying tongue railhead. The inner end and side walls are ramped to facilitate removal of debris. The tongues are positively locked in extreme positions and are mounted on the bodies by an improved attachment device.

REFERENCES:
patent: 719557 (1903-02-01), Blanchard
patent: 1388700 (1921-08-01), Cwojna
patent: 2231232 (1941-02-01), Theodos
patent: 3977635 (1976-08-01), Pirker et al.
patent: 4059054 (1977-11-01), Alimanestianu et al.

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