Abstract: The present disclosure relates to a railroad track tool apparatus. The apparatus comprises a tool configured to perform an operation to the rail of the railroad track, a clamp assembly, and a coupling. The clamp assembly is moveable between a clamped position and an unclamped position to removably couple the tool with the rail. The clamp assembly is moveable along the rail. The coupling is configured to couple the tool to the clamp assembly. The coupling comprises a pivot, a linkage assembly comprising an arm coupled to the pivot, and a head coupled to the linkage assembly. The coupling is configured such that the tool is moveable between an inner side and an outer side of the rail, rotatable toward and away from the inner side or the outer side of the rail, and rotatable toward and away from an underside of the rail.

Abstract: A portable cutting apparatus (1) for the in situ truncation of railway rails (9) comprises a rail saw (2) having a motor (3) with a cyclic movement output member (4), a plate holder (5) adapted to carry an abrasive blade (6) and a movement transmitter (7) engaging the motor output member (4) and the plate holder (5) to set the plate holder (5) in a cyclic movement, a linkage structure (27) with a rail connector (29) and a saw connector (31) and a sawing position alternator (45) to autonomously and alternately move the plate holder (5) to and fro.

Abstract: A rail profiling device for a railway crossover includes a frame having first and second rail-side members laterally spaced from each other and two longitudinally spaced support members extending therebetween; a plurality of wheels positioned on the rail-side members, wherein the rail-side members are laterally spaced a distance, such that wheels on opposite rail-side members are configured to be mounted on laterally spaced rails of the railway corresponding to an axle width of a rail vehicle of the railway, the wheels including a wheel profile corresponding to a rail vehicle wheel profile; and a planing device positioned on the first rail-side member and configured to provide, in a single set-up pass, a precisely located continuously levelly supported crossover wheel contact surface profile along the entire length of one side of the railway crossover.

Abstract: A device for the continuous reprofiling of the rails of railroads includes at least one abrasive rail reprofiling unit (2) guided along the railroad tracks and comprising at least one abrasive disk (3) that can be pressed against a rail (1). This device notably includes at least one abrasive-waste pickup (20) having at least one segment forming a collection port (21). This segment is placed in the immediate vicinity of at least one abrasive disk (3) and into the geometric axis (41) of the major waste jet (40) produced during operation of this abrasive disk (3). The segment (21) simultaneously cooperates with means for transporting the waste. Moreover, each waste pickup (20) includes elements for reflecting and absorbing the kinetic and thermal energy that allow the formation of agglomerations of matter on the pickup to be avoided.

Abstract: A method and apparatus for directing a spark stream generated by contact between a rotating grinding stone and a railhead away from nearby combustible material, wherein the grinding stone is tilted at an angle such that only one of the leading and trailing edges of the grinding stone contacts the railhead during the grinding operation. The leading or trailing edge is selected such that the spark stream is directed away from the nearby combustible material. The apparatus can include tilting assembly, associated with a grinding unit, including a grinding stone, which is controllable to tilt the grinding unit at an angle to the railhead during the grinding operation such that only one of the leading and trailing edges of the grinding stone contacts the railhead during the grinding operation.

Abstract: A rail grinding machine comprises a machine frame having guide wheels running on the rail, a follower frame mounted on the machine frame, the follower and machine frames being pivotally connected for pivoting about an axis extending in the longitudinal direction, and the follower frame having sensing rollers running on the rail of the track. A rail grinding device is mounted on the follower frame for adjustment relative to the rail, a drive motor for driving the rail grinding device is vertically adjustably mounted on a vertical guide connected to the machine frame, and a transmission connects the drive motor to the rail grinding device.

Abstract: A wheeled trolley carries various tools across an object to be worked. A track attaches directly to the work and simultaneously isolates the tool from the work. A standard connection to the trolley readily accommodates a variety of diverse tools, using a keyway or the like to ensure accurate and repeatable placement of the tools. A preferred contouring guide allows a tool to be moved through an arc, where the focal point of the arc may be set to produce an infinite variety of custom shapes, bevels or angles of cut. An upper stop is provided which readily sets the break line between surface finish and edge contour. An adjustable tool carriage allows control over both position and force, including preloading a work tool with force. Resilience is incorporated into the apparatus to accommodate diverse hardness and abrasion characteristics, and, in at least one embodiment, to enable the track to accurately follow a warped or sagging work piece.

Abstract: A portable multi-purpose rail grinding machine for grinding field welds, switch points and frogs, including a hydraulically driven grinder with a disk-shaped stone adjustably mounted on a frame for setting the grinding stone between horizontal and vertical positions, an adjustable rail assembly including a hook-shaped guide member and a flanged wheel guide member, one of which may be selectively chosen to guide movement along a rail, and adjustably positionable handlebars for allowing the operator to control and manipulate the grinder from an ergonomic upright position.

Abstract: A grinder support apparatus for supporting a grinder on a railroad rail. The apparatus comprises a support wheel adapted to roll on a top surface of the rail, and a frame having the support wheel connected thereto. The frame comprises a handle for a user to move the support wheel and frame along the rail and a support section for removably connecting the grinder to the frame. A grinding wheel of the grinder can contact a surface of the rail as the support wheel contacts the top surface.

Abstract: The grinding machine comprises A grinding head with a rotary abrasive tool, carried by a chassis equipped, at its ends, with rollers for running and. guiding on the rail that is to be ground. A balancing assembly, resting on the other rail of the track, is mounted to pivot on the chassis, also provided with an orientable maneuvering arm. To rotate the grinding tool, an internal combustion engine is fixed to a support articulated to the balancing assembly, the horizontal output shaft of the engine being connected by a transmission assembly to the grinding head. The machine makes it possible to grind the profile of the head of the rail through an angle of 180° while at the same time avoiding excessive inclination of the engine.

Abstract: A cutting apparatus for cutting a rail or other elongated workpiece includes a rotatable blade for cutting the rail, a blade cover for covering the blade, an engine (or motor) for driving the blade, and a frame for supporting the blade, the blade cover and the driver. The cutting apparatus further includes link mechanisms. One link mechanism supports the blade and the blade cover relative to the frame and permits the blade cover to move while maintaining a predetermined attitude during cutting. Therefore, the blade cover moves vertically and avoids hitting obstacles. Another link mechanism moves the driver while maintaining a predetermined attitude of the driver. Therefore, the driver remains level during cutting.

Abstract: A rail cutting machine with an engine block rotating a grinding wheel and a support guiding the grinding wheel in its plane transversely of the rail while being pivotally connected onto a vice to be fastened to the rail the grinding wheel being mounted at one end of an an-n pivotally connected with its other end to the engine block about an axis parallel to the pivot axis] on the vice and to the longitudinal axis of the rail, the engine block being permanently connected to the vice so that it may not be turned over horizontally and may not be turned upside down vertically so as to always be on a same side of the plane of the grinding wheel with respect to the vice.

Abstract: A main body 1 of a grinding assembly for use in a track rail joint grinding apparatus comprising a pair of grinding assemblies A, A' rotating around vertical shafts 5, 5' in mutually opposite directions so as to grind one and the other width-wise halves of a track rail R, comprises grinding blade supporting portions 3A to 3C which each constitute a recess edge 2 complementarily engaging with a head Ra of the track rail R, said grinding blade supporting portions being arranged at equiangular distances in the rotational direction of the vertical shaft 5, 5', and a suitable number of grinding blades 4a to 4h being detachably attached to grinding blade attaching portions 6a to 6h of each of the grinding blade supporting portions 3A to 3C.

Abstract: A fine grinding device for the continuous reprofiling in situ of the surface of the head of at least one rail of a railway track includes at least one fine grinding unit per rail. Each one of these fine grinding units carries a beam (1) on which are mounted rotatably at least two pulleys (4, 8) situated slightly above the rail (3) and around which is arranged an endless abrasive brand (5) working in the longitudinal direction of the rail. Between these two pulleys (4) there is a biasing shoe (12) that contacts the rail over a rectangular surface and that is subjected to the action of a jack supported by the beam (1) and acting on the shoe (12) with a determined force for applying the abrasive band (5) against the head of the rail (3) without any vibration. At least one of the pulleys (4) is driven in rotation by a motor to set the abrasive band (5) into motion.

Abstract: An abrasive block 1 used for scraping wet leaves, snow or ice from a rail R of a railway track in order to enhance traction, is urged onto the rail R by a piston 2 under oil-pressure within a cylinder 3. The pressure is created via a diaphragm 11 which separates the oil in the cylinder 3 from an air-chamber 12. Chamber 12 is supplied with air via a regulator 14, from the air-brake supply system 16 of the train, and has a dump valve 19 for dissipating air-pressure surges. A return spring 20 under the piston 2 is active in retracting the block 1 when air-pressure in the chamber 12 is reduced.

Abstract: In the proposed process of machining the top surface of a rail by a circumferential grinding by means of at least one abrasive product, which is moved along the rail and urged against the top surface of the rail and rotates about an axis of rotation which includes an acute angle with the longitudinal direction of the rail, desirable grinding conditions are ensured in that a freely rotatable abrasive is caused to roll and slide on the top surface is caused to roll and slide on the top surface of the rail in frictional contact therewith and thus to grind said top surface.

Abstract: A rail grinding machine for grinding rails of a track includes a machine frame with rollers for support on both rails of the track and a swivel drive for swingably mounting a carrier frame to the machine frame for rotation about a pivot axis which extends longitudinally in direction of the track. A grinder is adjustably secured to the carrier frame in an area of one rail, with a drive motor for supplying energy to the swivel drive and the grinder being secured to the machine frame at an area distant to the carrier frame. The distance of the carrier frame and its pivot axis from a support roller located opposite to the grinder is reducible by a length compensation unit which includes a pressure-exerting element for applying in opposition to the distance reduction a force by which the grinder is pressed against a rail head inner flank of the rail being ground.

Abstract: A mobile rail grinding machine comprises a machine frame extending in a longitudinal direction, and undercarriages supporting the machine frame on the track rails for movement in an operating direction. A mounting frame is supported on the track rails by flanged wheels, and a drive vertically adjustably connects the mounting frame to the machine frame. At least one rail head grinding unit is arranged on the mounting frame and comprises an abrasive belt having opposite ends, a storage spool holding one of the belt ends and a collecting spool holding the opposite belt end whereby the abrasive belt may be reeled off the storage spool and onto the collecting spool, and a pressure element arranged to press the abrasive belt against the surface area of the rail head off which the irregularities are to be ground.

Abstract: An apparatus forming a portable, hand-operated machine (1, 1', 1"), having a circular cutting wheel (4) or saw blade (4") which is rotatable about a center of rotation (5, 5"), comprises a double-armed holder (9) with a rear arm (20) which, at its rear, free end (27), is connected to the machine at a first hinge, rotatable about a first axis of rotation (18, 18a, 18b, 18") parallel to the center of rotation of the cutting wheel or the saw blade, and, at the other end, is connected rotatably, by means of a toggle joint (22), to a front arm (21) which in turn is connected rotatably, at its front, free end, to a securing device about a second axis of rotation at a second hinge, for rotatable anchoring of the holder and, thus, of the machine on the object which is to be cut or sawn.

Abstract: The machine comprises an automotive vehicle (1) and at least one grinding carriage (2). During the grinding operation of the rail, the automotive vehicle (1) is standing still, immobile with respect to the railroad track, whereas the grinding carriage (2) displaces itself reciprocally along the track. The distance between the the carraige (2) and the vehicle (1) is thus variable.

Abstract: A cutting machine for a railroad rail performs clamping by use of a screw to fasten a catch arm onto a gauge which indicates a cutting position and is fastened onto a railroad rail. The catch frame is connected to a main body block via slide shafts, and a rotating grinding disk saw, driven by an engine mounted on the main body block, is rocked by working a stroke handle to smoothly raise and lower the rotating grinding disk saw within a cut opening to cut the railroad rail crosswise. By varying the cut of the rotating grinding disk saw, frictional resistance to cutting is reduced and the generation of frictional heat is prevented, permitting use of a small-scale engine and improving the accuracy of the cut.