Railway switches and signals – Crossings – frogs – and mates – Frogs
246435R, 246448, 246452, E01B 702, E01B 716
In a reversing device for movable parts of a railway switch within the deflection area of a railway switch, in particular tongue rails, monorail deflection device or movable stock rails, in which device the movable rails can be caused to contact rigid switch parts, the movable rails are supported in their contacting position by supporting rods extending in the longitudinal direction of the rail the supporting rods are slideably guided on the sleepers or, respectively, base plates in the longitudinal direction of the rails. In this case, the supporting rods are designed as adjusting members for the reversing operation and comprise thrust supports cooperating with thrust supports of the movable rails for shifting the rails. At least one of the mutually cooperating surfaces of the thrust supports of rail and/or of supporting rod is formed of a wedge surface passing over into a supporting surface extending in an essentially parallel relation to the longitudinal direction of the supporting rod. The supporting surface cooperates in the contacting position of the rail with the thrust support of the rail. This provides in a simple manner the possibility to reliably and exactly effect reversing operation for railway switches, in particular high speed switches having a great radius of curvature.
patent: Re29353 (1977-08-01), Metcalf
patent: 528776 (1894-11-01), Horrie
patent: 770614 (1904-09-01), St. George-Moore
patent: 1269444 (1918-06-01), Hollingshed
patent: 1371937 (1921-03-01), Scartsaris
Voest-Alpine Maschinenbau Gesellschaft m.b.H.
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