Abstract: The invention relates to a superstructure switching device comprising a stock rail (12), a switching rail (14) that changes into a control rail such as a channel rail, a guide rail (10), a retainer (18) that holds the switching rail on the control rail side in a force-fit, in particular by means of a wedge element and a slide device (16, 30, 32, 34) that supports the switching rail in a sliding manner. The aim of the invention is to use a minimum of components for configuring the device, without forfeiting any functional efficiency. To achieve this, the guide rail (10) is a machined section of a rolled rail-steel section (24), which has on the control-rail side a cross-section (26) that corresponds to the control rail and seamlessly changes into the latter.

Abstract: The invention relates to a cross frog (10) for points and crossings, comprising a cross frog tip (14) and wing rails (16, 18) and running rails (20, 22) situated either side of this point, each with a basic course (38) aligned with a main or secondary track (26, 28). The aim of the invention is to reduce the wear around the cross frog tip without reconstructing the cross frog tip itself or the guard rails allocated thereto or realigning them in relation to each other. To this end, at least one of the running rails deviates from its basic course in the area of the cross frog tip, in such a way that the movement of a rail vehicle running through the main or secondary track is influenced through its wheel frame or bogie axle, away from the cross frog tip.

Abstract: A superstructure arrangement for a track comprising a rail fastened to a securing device such as a ribbed plate which is disposed above a concrete sleeper, with an intermediate layer extending between the sleeper and the securing device. The rigidity of the intermediate layer is variable and rated so that at the maximum permissible stress in the rail, caused by bending under wheel lead, the elastic property changes to substantially non-elastic.

Abstract: The invention relates to a track with rail track section (10) which differs from the usual basic layout. In order to check changes in track layout in a simple manner, the invention provides that the rail track section (10) has a cutout (24) running parallel to the basic layout in a longitudinal direction of the track. When the rail track section is placed parallel to the basic layout, the layout of said cutout is inversely the same as that of the desired change in layout.

Abstract: An expansion joint for part of a railway track arranged on a foundation has a stock rail with a stock rail head and a tongue movable with respect to and along said stock rail head, upon which at least one fastening device acys for pressing it on the stock rail. This expansion joint enables the rail foot to be lingitudinally moved with little friction and excludes tipping of the stock rail or tongue. For that purpose, the tongue is not bolted, but pressed only against the stock rail by the fastening device, and the force thus transmitted is decomposed into components that act, on the other hand, in the direction of the foundation and, on the other hand, in the direction of the stock rail head. The force is transmitted by a rolling element extending from a shaft which is anchored to the foundation.

Abstract: A method and device for the elastic bending of a support (16) with at least one bendable end (24), intended in particular for a flexible switch (10). To achieve an elastic line of a finite radius of curvature also at the free end of the support, a bending moment diverging from zero is generated in the elastically bendable end (24) of the support (14) by applying a force coupling to an auxiliary lever (28).

Abstract: A superstructure arrangement for a track comprising a rail fastened to a securing device such as a ribbed plate which is disposed above a concrete sleeper, with an intermediate layer extending between the sleeper and the securing device. The rigidity of the intermediate layer is variable and rated so that at the maximum permissible stress in the rail, caused by bending under wheel lead, the elastic property changes to substantially non-elastic.

Abstract: A bearing system for a part of a railroad track, such as a rail-fastening or ribbed slab (10), supported by elastic elements on, for example, a railroad sleeper. The elastic elements form a spring system with a kinked characteristic curve such that when the spring system is subjected to force that is smaller than the forces active in the operative range (16) of the spring system, the characteristic curve rises steeply and, in the operative range (16), runs flat.

Abstract: A support system for a rail section which bridges the gap between foundations which are relatively movable auxiliary rails running parallel to the rail across the sleepers which are supported by the foundation, and underpinning supports providing a stiff connection between rail and auxiliary rails. The underpinning supports move in response to relative movement of the foundation so that undesirable rail bending is avoided.

Abstract: An expansion joint for part of a railway track arranged on a foundation has a stock rail with a stock rail head and a tongue movable with respect to and along said stock rail head, upon which at least one fastening device acts for pressing it on the stock rail. This expansion joint enables the rail foot to be longitudinally moved with little friction and excludes tipping of the stock rail or tongue. For that purpose, the tongue is not bolted but pressed only against the stock rail by the fastening device, and the force thus transmitted is decomposed into components that act on the one hand in the direction of the foundation and on the other hand in the direction of the stock rail head.

Abstract: A rail junction (20) between rail lines (12, 14) extending in a direction parallel to each other for a car with a predetermined clear space profile, for a dual-track line of a high-speed magnetic train. Rail line (12) consists of line up supports (22, 24) and flexible support (16), rail line (14)consists of supports (28, 26) and flexible support (18), the flexible supports (16, 18) are elastically bent so that their ends (30, 32) are aligned for providing a rail connection. In order to permit a track change without changing the distance between the rail lines, the support (22, 26) adjoining the elastically bendable end (30, 32) of the bendable support (16, 18) is elastically bent outward away from the direction of the rails.

Abstract: Rail construction including laterally adjacent frog sections with guard rails outwardly spaced to each side thereof by interposed liners. The components are interconnected by a transverse tightened bolt with vertical misalignment precluded by either nesting projections on adjacent abutting faces of the components or by a rigid, preformed sleeve press-fit within the bore receiving the bolt, the sleeve extending through the frog sections and at least partially through the liners.

Abstract: A roller assembly for a rail switch tongue used with a stock rail exhibiting reduced friction and resistance to vibration includes roller elements for supporting the switch tongue. Each roller element is supported by elastomer springs, one having a damping and the other having a supporting characteristic. The spring elements are mechanically coupled so that loading of the roller elements by the switch tongue causes a change in the spring length.

Abstract: To achieve low wear and hence a greater shape durability of track parts, it is proposed that the contact surface of a track part have a curvature having a constant difference .DELTA.K in relation to the curvature of the corresponding current contact surface of the wheel supported on it, or that successive contact surfaces of the track part and the wheel have a continually changing curvature difference .DELTA.K with the curvature difference between the contact surfaces of the track part and wheel lessening as the angle of contact tangent increases.

Abstract: A device for locking a switch blade with a stock rail which includes a locking piece connected to the stock rail. The locking piece has an opening through which the longer leg of an L-shaped locking clamp extends. A switch element also extends through the opening and has an upper surface in contact with the longer leg of the L-shaped member which extends below the foot of the switch blade. The shorter leg has an end free to articulate with respect to a shaft. The shaft is further connected with a clamp receiver or clamp notch. The pivot axis of the clamp receiver member and shorter leg extends parallel with the switch blade and is positioned above the foot of the switch rail such that the clamp receiver member slopes downwardly between the shaft and connection point with the switch blade.

Abstract: A device for locking a switch blade (10, 12) with a stock rail (14, 16) is proposed, whereby the switch blade is held down on a supporting surface only when it is in locked and unlocked positions. When the switch blade (10, 12) is in the locked position it is acted upon by a resultant force (53) that prevents both a rotation of the switch blade and its rising up.

Abstract: A frog tip that can be moved relative to the wing rail is proposed, in which the contact surfaces each curve away from the frog tip and the wing rails in a lengthwise direction.

Abstract: A rail attachment device which allows for longitudinal displacement of a rail. The rail attachment device includes a first element fixedly supported to a ribbed plate and having a vertical arm extending essentially parallel to the longitudinal direction of the rail. The rail attachment device also includes a second element which is connected to the web of the stock rail. Connecting elements connect the first element to the second element so as to allow for longitudinal shifting of the stock rail and second element with respect to the first element fixed to the ribbed plate. In one embodiment, the second element includes a web-plate fixed to the web of the stock rail by a bolt and a plate-like element connected to the web-plate and having longitudinally extending slots. The connecting elements pass through holes formed in the vertical arm and through the elongated slots.

Abstract: An arrangement is proposed for controlled guidance of a wheel axle (22) or of a bogie of a rail vehicle passing over points, whereby the wheel contact point (48, 50) is subjected to a controlled influence such that the wheel axle runs substantially vertical to the track longitudinal axis. The controlled influence of the wheel contact point can be exerted by, for example, the stock rail (32) veering away outwards in the area that the blade begins.