Railway switches and signals – Switch-connected frogs
Patent
1988-11-07
1991-01-08
Graham, Matthew C.
Railway switches and signals
Switch-connected frogs
246415R, 246435R, 246468, E01B 700, E01B 716
Patent
active
049829190
ABSTRACT:
In a reversing device for the movable parts of a railway switch, in which movable wing rails are, in their end positions, alternately engaging the frog and are supported in their engaging positions by supporting rods extending in the longitudinal direction of the wing rails and which are slideably guided on the sleepers or, respectively, base plates, the supporting rods include at least one thrust support cooperating, for the purpose of shifting the wing rails relative to the frog, with thrust supports of the wing rails. In this case, at least one of the mutually cooperating surfaces of the thrust supports of a wing rail and/or supporting rod is formed of a wedge surface passing over into a supporting surface extending in essentially parallel relation to the longitudinal direction of the supporting rod. The supporting surface cooperates, in the position in which the wing rail contacts the frog, with the thrust support of the wing rail.
REFERENCES:
patent: 1269444 (1918-06-01), Hollingshed
patent: 1371937 (1921-03-01), Scartsris
patent: 1885366 (1932-11-01), Martini
patent: 3860205 (1975-01-01), Dohse
patent: 4210300 (1980-07-01), Kempa
Durchschlag Gerald
Lang Alfred
Graham Matthew C.
Voest-Alpine Maschinenbau Gesellschaft mbH
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