Abstract: In a device for checking the operation of devices (4) used to displace movable switch parts (2, 3), in which the movable switch parts (2, 3) are connected with each other by a coupling rod (13), the coupling rod (13) is comprised of two coupling rod parts (14, 15) that are relatively movable in the axial direction. Sensors (34, 35) are provided for the detection of at least two different displacement positions of the coupling rod parts (14, 15).

Abstract: In a device for the monitoring and the prognosis of the failure probability of inductive proximity sensors (1) for the monitoring of the position of movable switch rails or rail components, in which the proximity sensor (1) has at least one coil (5) that is supplied by an oscillator (7), and the sensor current flowing by means of variable attenuation is measured and then fed to an evaluation circuit, characteristic lines (18, 22) of the sensor (1) are stored for the course of the sensor currents in dependency of the distance of the movable switch rails or rail components, i.e. the mechanical attenuation in an electric not additionally attenuated condition, and in an electric additionally attenuated condition. The measurement currents (22) corresponding to a mechanical attenuation condition (18), as well as to respective additionally electric attenuated condition are cyclic scanned.

Abstract: In a device for measuring the temperatures of axles and/or bearings to locate hot-boxes or overheated brakes in rolling stock, in which the infrared rays of the measuring points are directed onto an infrared receiver (8) via an oscillating mirror (9), whereby infrared rays emitted transversely to the longitudinal direction of the rails are detected in the scanning plane defined by the oscillation of the oscillating mirror (9), at least two deviation mirrors (1, 2) are arranged within the scanning plane at a distance (a) from one another transverse to the longitudinal direction of the rails. The deviated infrared rays of the deviation mirrors (1, 2) are detected in a chronological sequence in accordance with the oscillation of the oscillating mirror (9).

Abstract: A device for switching and elastically locking the end positions of movable switch parts, in particular switch tongues of grooved rail switches, including an axially displaceable rod (15) and a tube (17) surrounding the rod, in which a spring (29) encompassing the rod is braced against stops and locking members (26, 26′) capable of being displaced radially outwards are arranged, wherein the rod (15) has axially spaced-apart control stops (24, 25) for a radially inward position of the locking members (26, 26′) and the tube (17) has stops (32, 33) for the outward position of the locking members (26, 26′), wherein at least one (25) of the control stops (24, 25) of the rod (15) is displaceable relative to at least another one (24) of the control stops (24, 25) in the axial direction of the rod (15) and is capable of being fixed in the respective displaced position.

Abstract: In order to enable the use of highly resistant materials difficult to weld or not weldable at all for a stock rail (2), the tongue box for grooved rail switches, which includes a stock rail (2), a slide plate (5) and a side rail (3), whereby the side rail (3) and the slide plate (5) and a base plate (4) are welded together forming a box-shaped section with the stock rail (2), is designed in a manner that the stock rail (2) is connected with the box-shaped profile in a positive and force-transmitting manner by clamping pieces that are welded with the box-shaped section and/or the base plate (4).

Abstract: In a device for displacing the movable parts of rail switches or crossings, in which a plurality of hydraulic cylinder piston units engaging in an offset manner in the longitudinal direction of the rails are each connected in series, at least one directional or seat valve (9) capable of being adjusted in a pressure controlled manner is inserted in the duct (8) that connects the hydraulic cylinder piston units (1 to 4) arranged in series, which directional or seat valve blocks the connection to the consecutive cylinder piston unit if a preset differential pressure is exceeded.

Abstract: The invention relates to a curve path of a switch comprising switch tongues, a main track and a branch track, which curve path from the beginning of the curve path to the end of the curve path is comprised of several portions having different curvatures 1/R, R being the radius of curvature, wherein the coefficient of curvature &agr;=1/R/1/Rmin at the beginning of the curve path (&agr;A) and at the end of the curve path (&agr;E) is selected to be ≧0 and the point, or a region, in which &agr;=1 is located at a relative distance &ngr;=L/Lges≠0.5 from the beginning of the curve path, L being the distance from the beginning of the curve path and Lges being the length of the curve path.

Abstract: A device for locking the end positions of movable railway switch parts in which two parts axially displaceable relative to each other are displaced into a position coupled to each other for movement in at least one direction. The relatively displaceable parts, formed by a tube and a rod guided within the tube, are arranged at least partially within a stationary external tube. Locking elements comprising balls cooperate with the axially displaceable parts and the external tube and are displaceable radially into a lock position within a recess of the external tube. The balls are surrounded by a ring resiliently held in a position having an outer diameter smaller than, or equal to, the outer diameter of the axially displaceable tube retained in a peripheral groove of the tube. The balls are arranged in openings in the tube between the rod and the ring.

Abstract: In a connecting device for a switch actuator and/or a lock for movable parts of a railway switch or crossing, including a rod assembly, in particular a sliding rod or a locking rod articulately connected with the movable part, the movable part or the rod assembly, in particular the switch tongue (2), is rigidly connected with a strap (4) engaging from behind a pin (5) connected with the rod assembly or the movable part for transmitting tensile forces. Between the rod assembly and the strap (4) or the movable part is arranged at least one elastic compression element, which is compressible by the rod assembly in the abutment position of the movable part on a rigid rail part, the strap (4) being displaceable out of abutment on the pin (5).

Abstract: The invention relates to a casing for a hot box or blocked brake detection scanner (2) comprising infrared detectors and a heating means, wherein the casing is comprised of a casing lower part and a lid (5), the lid (5) is designed as a chimney top with lateral surfaces (7, 8) converging towards the upper edge and carrying an electrical heating means (4) on their inner sides (6), and the lid (5) includes openings (9) for the scanning geometry of the infrared detector(s) on its upper edge or near its upper edge.

Abstract: Device for detecting the positions of pivotable parts of a rail switch, such as, e.g., tongue rails (1, 2) by at least one sensor designed as a continuous distance sensor (4,5,6,7), wherein the sensor output is connected to a circuit arrangement (10) for two separate evaluations, the first evaluation being configured as a distance evaluation and the second evaluation being configured as a function control of the sensor, as well as a method for evaluating signals.

Abstract: A device for setting railway switches includes a plurality of interlinked hydraulic switching devices (6) connected to a separate reversible hydraulic drive unit in a manner offset in the longitudinal direction of the rails, wherein the working volumes of the hydraulic cylinder piston aggregates (6) are connected to driving movement in same direction. The pistons (20) or plungers (11) include push-open valves (18) for travel limitation.

Abstract: In a device for securing stock rails in railway switches comprising a bearing plate (2) for the stock rail (1), a slide chair (3) for the switch blade and an elongate spring element (6) for holding down the rail foot (1), the spring element (6) is insertable into a tunnel-shaped recess (5) of the slide chair (3) at a tension insufficient for holding down the rail foot (1), or without any tension at all, and is braceable relative to the rail foot (1) and the bearing plate (2) by a separate clamping wedge (10) extending transverse to the spring element (6). The spring element (6) has a cross section varying over its length and, starting from a central region in which it cooperates with the transverse wedge (10), tapers towards its two free ends and, on its free end (9) facing away from the rail foot (1), is designed to project towards the bearing plate (2).

Abstract: A device for operating switches includes a plurality of interlinked hydraulic switching devices (7) offset in the longitudinal direction of the rails. The first mechanical switching device is connected with a hydraulic cylinder/piston unit acting as a pumping element, the working volumes (13) of this first hydraulic cylinder/piston unit (7) acting as a pumping element being connected with the working volumes (13) of consecutive hydraulic cylinder/piston units (7) so as to be driven in same direction.

Abstract: The device that is used to measure the switching force in railway points incorporates a measuring bolt (5) that can be inserted into a joint in the point drive. At the unattached end of the measuring bolt there is a head (7) in which an electro-mechanical sensor (8) is arranged. The precise adjustment of the measuring bolt (5) within the joint is effected by using a spacer (10), which simplifies the removal of the measuring bolt once the measurements have been made.

Abstract: In a switch blade (point-rail) device in a grooved-rail turnout on a tram- or streetcar-type line, switch blades (2) are detachably mounted, using a clamping wedge (5) which is fastened to a support part (6) by means of a screw (12) in an essentially perpendicular direction to the running surface. Once the clamping wedge (5) has been removed, the switch blade (2) can be demounted and lifted out. Mounting is performed by pressing an inclined lateral surface (7) of the switch blade (2) against a correspondingly inclined lateral surface (8) of the support part (6). The angles of inclination of the wedge, and of the contact surface of the support part, are matched to each other so that self-locking is achieved.

Abstract: In a device for locking end positions of movable switch parts, in particular, a switch lock, two relatively movable parts are displaceable into a position non-positive in respect of at least one direction of movement. The relatively movable parts are formed by a tube and a pin axially guided within the tube. In addition, separate locking elements formed by heads of flexible tongues are provided.

Abstract: A testing apparatus for the calibration of overheating or rail brake locating devices comprises an IR emitter which is guided in a housing so that it can shift along a curved track to exhibit an appropriately adapted beaming direction in a particular position. An extension piece for the track is provided for further changing the beaming direction.

Abstract: An adjustable scanning range is provided for vehicle-activated measuring equipment of the type which includes receiver coils positioned on opposite sides of a transmitter such that voltages induced in the received coils from the transmitter are altered as the vehicle passes, the measuring occurring through the application of the induced voltages to a comparison circuit. Altering the input(s) to the comparison circuit by a constant voltage value allows the scanning range to be adjusted.