Abstract: A trolley apparatus, system, and method of manufacture are described herein. The trolley apparatus may comprise one or more of a first side plate, a second side plate, a support axle, one or more roller components, and/or other components. The support axle may be mounted through and/or between the first side plate and the second side plate. The support axle may be mounted such that the first side plate and the second side plate are at opposite ends of the support axle. The support axle may be configured to support the one or more roller components. In some implementations, the trolley apparatus may be specifically configured to accommodate a slackline webbing which may have a width of about five centimeters.

Abstract: Installation for transporting vehicles hauled by a cable, including an image acquisition system generating an image representative of a compartment of a vehicle, and an electronic control unit retrieving an identifier of the vehicle and recording the identifier and the representative image associated with the identifier in a non-volatile memory.

Abstract: An exercise device comprising a metallic box, two motors mounted at left and right sides of the box, a mirror touch screen, a camera, a loudspeaker, two motors mounted at the left and right bottom of the box, movable arms at slide tracks at both sides, a voltage transformer for the mirror touch screen, and four drive boards for four motors. All these four motors connect with gear reducers. Four carriages ride on both sides of slide tracks. The upper left and right two carriages provide support for upper limbs exercise. The lower left and right two carriages provide support for lower limbs exercise.

Abstract: A movement system includes a rail, a trolley, and a braking system. The trolley is movably attached to the rail and configured to support the payload. The braking system is operatively attached to the rail. The braking system includes a braking module having a base, operatively attached to the trolley, and a wheel assembly, operatively attached to the base. The wheel assembly has a shaft, a clutch, and a braking wheel. The clutch is rigidly attached to the shaft and configured for rotation with the shaft about the rolling axis. The braking wheel axially surrounds the clutch and is in continuous rolling contact with a surface of the rail. The clutch is configured to selectively allow rotation of the braking wheel relative to the shaft in only one direction of rotation to decelerate movement of the trolley along the rail.

Abstract: A rail for suspended conveyors and suspended cranes, having a substantially C-shaped profile head for suspending the rail and a profile body connected thereto. The profile head is open at the top, thereby forming a gap running along a longitudinal center plane bounded on both sides by first web segments extending outward from the center plane. Two second web segments opposite each other and running downward and outward as seen in cross section are connected to the first web segments and the rail is made of two profiles disposed symmetrically about the vertical longitudinal center plane as seen in cross section. The rail supports an overload protection in the region of the profile head, and allows simple attachment by suspension supports. In a particular embodiment the first web segments run diagonally outward and upward and the first web segments are angled relative to the longitudinal center plane.

Abstract: A zip line or trolley system kit for propelling a person or an object using gravity along an extended cable line suspended between two trees or towers. The zip line system having a frame with one or more wheels, an adjustable length seat, a handle and a braking system for slowing the speed of descent of the zip line system. The trolley system having at least two wheels spaced apart at a suitable distance to increase ride smoothness and improve sliding of the zip line system along the extended cable. An actuator of the braking system allows for the rider to control of the speed of descent of the zip line system.

Abstract: An aerial cable car system including transportation operating equipment for passenger and/or freight transport, wherein electrical consumers are connected for operation thereof to a rechargeable electrical energy store of a transportation operating equipment by a respective power circuit. The transportation operating equipment includes an operating control device connected to measuring devices for dynamically capturing measurement values based on available quantity of energy in the energy store. The operating control device includes a storage module having at least one stored measurement control value and an associated control parameter. The operating control device includes a filter module comparing a captured measurement value to the at least one stored measurement control value and reading out corresponding stored control parameter, based on which power circuits can be selectively coupled or decoupled to the energy store by the operating control device.

Abstract: A method for implementing an overhead rail guided transport system includes the following steps: a vehicle transport system is provided, which includes an upper rail guided transport system, a lower rail guided transport system, a vehicle exchange equipment, and a plurality of vehicles operating in the upper and lower rail guided transport system; respective vehicle utilizing rates in the upper and lower rail guided transport systems are provided; the vehicle exchange equipment is used to interchange the vehicles respectively operating in the upper and lower rail guided transport systems in order to equilibrate the respective vehicle utilizing rates.

Abstract: The present invention includes a track (1, 101) of a track system with straight, transition, curved, and switch track sections. The invention further comprises bogies (40) for vehicle cabins suspended under the track. Track sections of the track have an upper rail (1) and one or two lower rails (101, 201). Further, a bogie (40) has fore and aft sets of upper guide and switch wheels (151, 251, 154, 254), and one set of lower guide and switch wheels (152, 153, 252, 253, 156, 157, 256, 257). The bogies (40) also have one left and/or one right load bearing wheel (150, 250) and one drive wheel facing upwards and engaging a downwards directed drive wheel running surface (15) of the upper rail. Each set of lower guide wheels consist of left and right wheel pairs (152, 153, 252, 253) so that transition sections can be passed without moving any parts of the bogie (40).

Abstract: A hoist apparatus includes a traveling portion disposed to travel along a transfer path, a rotation portion installed at the traveling portion to rotate with respect to the traveling portion, an ascending and descending portion to ascend or descend with respect to the rotation portion and for loading an object, and an object support member installed at the traveling portion, having an accommodation space to accommodate the object, and including at least one object support portion disposed at one side of the object support member and having a shape corresponding to the object so as to support the object rotated by the rotation portion.

Abstract: A roller coaster amusement device adapted to provide for the passengers a ride wherein the passengers experience at least a portion of the ride in a racing position, the amusement device wherein an endless guide structure at least including multiple curves, one or more carriages displaceable along the guide structure, a passenger assembly associated with a carriage, said passenger assembly being adapted to accommodate at least one passenger such that said passenger experiences at least a portion of the ride in a racing position, a station along said guide structure allowing the passenger to board the passenger assembly.

Abstract: A brake mechanism for a beam trolley on a beam has a body member on the beam trolley adjacent the beam. The body member has a recess and axially aligned bores and a rotatable lateral pin extends through the aligned bores. The lateral pin has a rotatable elongate cam portion extending across the recess, and a brake pad is in the recess adjacent to the beam and abutting the cam portion. A handle is connected to the lateral pin for rotating the pin and the cam portion to displace the brake pad against the beam. The brake pad frictionally secures the beam trolley on the beam and locks the rotatable cam in place. Rounded end portions on opposite ends of the lateral pin and sleeve-like bushings between the axially aligned bores and rounded end portions permit rotation of the cam portion by the handle.

Abstract: A personal transportation and freight delivery system that can be operated as a fully automated driverless land transportation system consisting of vehicles that move on their own propulsion on a pair of overhead parallel steel rails that form a single track and allows people to go anywhere the tracks can take them and delivery of freight anywhere along the tracks. Passengers and freight are transported inside a module that hangs from a propulsion dolly with in-line wheels to roll along such tracks. Electric motors are used for propulsion with power supplied at the tracks assembly; however, the system is also suited for internal combustion engines. There's no need for track switches to route vehicles to its destination as each vehicle has a steering mechanism. Rubber bumpers at each end of the propulsion dollies allow the vehicles to fit bumper-to-bumper along the tracks.

Abstract: A zipline trolley system comprises a cable, trolley, launcher, and a catch block. The launcher is fixed on the cable and comprises a substantially cylindrical inner body with a rigid outer body adapted to rotate about the inner body. A return spring attaches the inner body with the outer body. The catch block is also fixed on the cable and comprises a block with left and right retaining arms pivotably connected to the block and adapted to clasp onto the front plate of the frame of the trolley.

Abstract: A plurality of cables is unified into a parallel in a vertical direction state to constitute a flat cable, and the flat cable is pressed against an internal surface of a perimeter of the Cableveyor. Further, both ends of the flat cable are fixed such that the flat cable touches neither upper or lower inner surface of the Cableveyor by slanting up both ends of the accommodated portion of the flat cable.

Abstract: The invention relates to a cable or pipeline trolley (2) for travelling along a carrier rail, comprising at least one chassis (1) and a carrier device (10) for cables or pipelines, in addition to a central plate (9) that connects the carrier device (10) to the chassis (1). Known cable or pipeline trolleys of this type are sensitive to high winds and are frequently derailed from the guides as a result of the large wind-exposure area. The aim of the invention is to develop a cable or pipeline trolley so that it is more operationally secure and the chassis can run more reliably along the carrier rail even when exposed to high winds or other stress. To achieve this, at least two rectangular cavities and two triangular cavities (6, 7) are positioned within the outer boundary of the central plate (9), said cavities being symmetrical in relation to the central axis of the central plate and being separated by a strut.

Abstract: A trolley having a trolley upper portion; a trolley wheel carriage secured to the trolley upper portion; and a trolley lower portion extending downwardly from said trolley upper portion, allowing the trolley to be displaced along a box to box cable.

Abstract: A joint connector for the lower flanges of adjoining running rails is assembled from two abutment pieces that each is seated in a lower flange of a respective rail that forms the joint. By use of centering devices, the correctly aligned positioning of the two abutment pieces is assured, wherein the abutment pieces transfer their aligned positioning to the lower flanges that meet each other without offset at the joint and the positioning cannot be negatively affected by transverse forces. The connection also provides a positive-fit in a transverse direction of the rails. Another joint connector arrangement connects the two running rails in the region of the top side. Abutment pieces in this case are seated as riders on a support rib and are connected to each other by tension rods.

Abstract: A device for suspending a rail of an overhead conveyor or a hoisting machine from a traversing gear or supporting structure includes a tension element, which carries the rail by one end via a fixing device. The fixing device grasps a support element of the rail. The support element widens and extends at least partly in the lengthwise direction of the rail. To provide a device for suspending a rail that provides enhanced safety against collapse, the fixing device includes two fixing parts, which are connected like pliers by means of a bolt running in the lengthwise direction of the rail. The fixing parts swivel toward each other from the open position into the fixing position by their fixing regions. The support element of the rail rests against the bearing surfaces of the fixing parts, even in the open position, when the fastening means are released.

Abstract: An improved zip line trolley allowing a rider control of his or her speed while traversing along a suspended cable (8) as seen in FIGS. 1A and 1B. The trolley comprises front and rear pulleys (44F) and (44R) conjoined via pulley housing (16) with left and right horizontal handles (10L) and (10R) attached to vertical shaft (12). Front and rear hand brake levers (20F) and (20R) are mounted onto left and right horizontal handles (10L) and (10R). When front and rear hand brake levers (20F) and (20R) are squeezed by the rider, they create a constricting force on front left and right calipers (32FL) and (32FR) along with rear left and right calipers (32RL) and (32RR) of FIGS. 2A and 3A. Thus, friction is applied to front and rear pulleys (44F) and (44R) via front left and right brake pads (34FL) and (34FR) along with rear left and right brake pads (34RL) and (34RR).

Abstract: The present invention discloses a zipline trolley comprising of two substantially flat side flanges arranged in a parallel configuration, a substantially flat front face attached perpendicularly to the front edges of the side flanges, and a substantially flat back face attached perpendicularly to the rear edges of the side flanges. There are also provided two axles for bearing wheels and four lines for attaching the side flanges to the two spreaders. One set of two lines is attached to the bottom of each of the side flanges. The lines are connected to two spreaders, which are attached to the ends of a handlebar.

Abstract: A friction drive trolley conveyor has a conveying traveling body provided with a friction drive load bar having traction purpose engaging means at both ends thereof and allows traction drive to be easily conducted without fail even at the time of conveying a heavy object. The traction purpose engaging means is composed of an engaged shaft arranged in the horizontal direction within a vertical notched portion formed at one end of the load bar, a hook member vertically swingably pivotally supported at an intermediate position in vertical height of the load bar at the other end of the load bar and a holding means holding the hook member in an engaged posture or a disengaged posture, and on a traveling route side, a first switching means switching the hook member from the engaged posture to the disengaged posture and a second switching means switching the hook member from the disengaged posture to the engaged posture.

Abstract: A suspension conveyance apparatus has a conveying traveling body movably supported on a traveling guide rail and a hanger suspended from the conveying traveling body, and an anti-swaying guide rail in parallel with the traveling guide rail, the anti-swaying guide rail is engaged with a roller and prevents lateral swaying of the hanger. The anti-swaying guide rail is installed on only one of the right and left sides of the traveling guide rail and includes a horizontal flat rail surface and a circular rail surface curvedly protruding in the vertically opposite direction of the horizontal flat rail surface, and a flat peripheral surface roller adjoining to the horizontal flat rail surface and rolling and an hourglass-shaped peripheral surface roller fitted to the circular rail surface are provided as the roller.

Abstract: A running gear, for example, a single-rail lower-flange running gear for hoisting equipment, includes several wheels running on a rail, at least two of which are arranged one behind the other in the direction of travel of the running gear and adapted to be driven by an electric motor. The driven wheels are joined to at least two shafts, which are oriented coaxially to the axis of rotation of said at least two driven wheels.

Abstract: The present invention relates to a rail and trolley apparatus having a trolley movable along a horizontally supported rail assembly for use as a fall protection or other load supporting system. The trolley is provided with pairs of wheels arranged to engage opposing bearing surfaces in each of two channels provided in the rail assembly. Each bearing surface has a central portion and two side portions shaped to fit flush against a curved edge surface of each wheel. This allows the wheels to bear against the surfaces in multiple directions, thereby allowing rolling motion of the trolley along the rail assembly as well as loading of the trolley in any direction not parallel to said motion. As a result, the apparatus can be oriented at any angle about a longitudinal axis thereof during installation, adding to the versatility and adaptability of the apparatus.

Abstract: A plurality of cables is unified into a parallel in a vertical direction state to constitute a flat cable, and the flat cable is pressed against an internal surface of a perimeter of the Cableveyor. Further, both ends of the flat cable are fixed such that the flat cable touches neither upper or lower inner surface of the Cableveyor by slanting up both ends of the accommodated portion of the flat cable.

Abstract: A cableway cabin, having supporting elements including a base frame, a roof frame and at least four corner columns connecting the base frame to the roof frame. All these parts are formed only from tubular sections having a circular inner cross-section. The parts are which has three connecting pieces, at least one of which is conical and one of which in each case is pressed into one of the three tubular sections forming a corner. Unless all three connecting pieces are conical, it is expedient to make the non-conical connecting piece or connecting pieces cylindrical and to provide them with a constriction extending over more than 60% of their length and filled with a resilient adhesive.

Abstract: A trolley assembly for a conveyor includes a wheel assembly and a trolley arm. The wheel assembly includes a wheel that is rotatably mounted to an axle, with the axle extending along an axis of rotation of the wheel and comprising a mounting portion that is non-rotatably mounted to or at least partially received in the trolley arm. The mounting portion of the axle may be inserted into a passageway and at least partially expanded to limit retraction of the axle from the passageway, or a fastener or other retaining means may secure the axle at least partially within a passageway of the trolley arm. The mounting portion of the axle may comprise a non-cylindrical mounting portion that is received in a non-cylindrical-shaped passageway of the trolley arm.

Abstract: A cableway with suspended tram and remote bogie is disclosed. This includes a self-contained motor, traction and support sheaves with provision for adjusting the height of the tram below said cable for limiting vertical acceleration caused by travel along the cantenary curve of the cableway.

Abstract: A rail guide having first and second guiding rails disposed in a mirror-inverted relationship with regard to one another. At least one pair of spaced leading and following carriages are displaceably mounted to the guiding rails so as to engage and transport a sliding component along a transport path towards a stacking area. While the leading and following carriages are slidably supported by both guiding rails along the main track of the transport path, the leading carnage slides along the first rail, and the trailing carriage slides along the second rail along the transport path downstream from the main track in the stacking area.

Abstract: A safety frame is provided to face a lid at a position where an article is held by an overhead traveling vehicle. A lower frame of the safety frame is movable upwardly relative to an upper frame of the safety frame. Further, an optical axis of a photoelectric sensor is provided between the lower frame and the upper frame.

Abstract: A trolley for a conveying system includes a first trolley arm with a trolley wheel rotatably mounted thereon, a second trolley arm with a trolley wheel rotatably mounted thereon, and a load bar. The trolley wheels roll along a track of the conveying system to move the trolleys along the conveyor track. The first trolley arm connects to a first attachment element, which includes a base portion and an attaching member that are integrally formed together. The load bar connects to the second trolley arm and to the attaching member of the first attachment element. The load bar has a slot proximate to one or both ends for receiving the attaching member. The attaching member is retainable in the slot, such as via a retaining pin. The first and second trolley arms are connected together via the load bar.

Abstract: A multi-program trolley and track switch system is provided for a movable wall system having multiple panels supported and movable along multiple paths defined by multiple track sections. Switch assemblies automatically direct each wall panel to a predetermined wall forming location based on the arrangement of guide plates in the each switch assembly and the configuration of a diverter element associated with each trolley. Each switch assembly includes an array of vertically oriented guide plates offset at different lateral distances from the track path. Each trolley includes a side diverter element that is positioned a predetermined lateral distance from the trolley centerline to engage a pre-selected switch guide plate. In one embodiment, lead trolleys have only a side diverter element while trailing trolleys have both a side diverter element and a center diverter element.

Abstract: A multi-program trolley and track switch system is provided for a movable wall system having multiple panels supported and movable along multiple paths defined by multiple track sections. Switch assemblies automatically direct each wall panel to a predetermined wall forming location based on the arrangement of guide plates in the each switch assembly and the configuration of a diverter element associated with each trolley. Each switch assembly includes an array of vertically oriented guide plates offset at different lateral distances from the track path. Each trolley includes a side diverter element that is positioned a predetermined lateral distance from the trolley centerline to engage a pre-selected switch guide plate. In one embodiment, lead trolleys have only a side diverter element while trailing trolleys have both a side diverter element and a center diverter element.

Abstract: An overhead transportation system includes a support structure positioning a running surface above ground level for operating a truck along the running surface. A car body is suspended from a beam or chassis carried by the truck in such a manner to place a center of rotation of the car body above the chassis and truck. Improved performance on curves is provided through superelevation of the tracks upon which fixed steel wheel assemblies of the truck ride.

Abstract: An apparatus monitors the locking of the safety bar of the chairs of an aerial cableway system. A first sensor determines the occupancy of the chairs and a second sensor determines the locking of the safety bar. The sensor output signals from these two sensors are led to a control device, which is enabled to switch the chairlift system off.

Abstract: An overhead transport apparatus includes a guide rail unit having a main rail having a pair of rail members, and a branch rail branching off the main rail; an auxiliary guide rail provided along the branch rail at an upper part of a branching region in which the branch rail branches off the main rail; a transport vehicle having a vehicle body, a pair of wheels attached to the vehicle body and moving along the guide rail unit, and a driving motor mounted on the vehicle body and driving the wheels; a roller provided in the transport vehicle, and ascending in order to move the transport vehicle toward the branch rail with the auxiliary guide rail, or descending in order to move the transport vehicle toward the main rail; and a control part controlling the ascending/descending movement of the roller.

Abstract: A non-metallic conveyor component is provided. The conveyor component includes an inner race and an outer race. The inner race includes an outer bearing surface. The outer race includes and inner bearing surface. One of the outer and inner bearing surfaces includes a helical groove. The inner and outer races are made from a polymeric matrix material having an alloying additive.

Abstract: An enclosed track system comprising an enclosed track having at least one curve and a trolley for negotiating the curve. The trolley includes an externally located drive section and a rolling section having first and second roller portions located within the track. The first roller portion includes rollers for rolling on flange portions of the track. The second roller portion includes a yoke-mounted driven wheel and a pair of support rollers. The driven wheel rolls on an inner surface of the top of the track. The pair of support rollers roll on flange portions of the track and are mounting on respective rods for pivoting action about vertical axes. The drive section includes a motor powered driving wheel which extends partially into the track to engage the driven wheel. The drive section also includes an articulated joint coupling the first and second roller portions together.

Abstract: A double pulley device which has a pair of sheaves arranged in line inside a reverse U-shaped metal support flange-plate, each sheave being mounted rotating free on a fixed spindle of the flange-plate. At least one orifice for the passage of a snap-hook, is situated between the two spindles of the sheaves, so that the fixing point of the snap-hook is positioned above the point of contact of the sheaves with the cable. One of the wings of the flange-plate is arranged to enable the mobile finger of the snap-hook to be opened when the double pulley device is fitted onto the cable.

Abstract: An enclosed track system comprising an enclosed track having at least one curve and a trolley for negotiating the curve. The trolley includes an externally located drive section and a rolling section having first and second roller portions located within the track. The first roller portion includes rollers for rolling on flange portions of the track. The second roller portion includes a yoke-mounted driven wheel and a pair of support rollers. The driven wheel rolls on an inner surface of the top of the track. The pair of support rollers roll on flange portions of the track and are mounting on respective rods for pivoting action about vertical axes. The drive section includes a motor powered driving wheel which extends partially into the track to engage the driven wheel. The drive section also includes an articulated joint coupling the first and second roller portions together.

Abstract: An enclosed track system comprising an enclosed track having at least one curved portion and a trolley including a rolling section having first and second roller portions located within the track and spaced from each other and an externally located drive section. The second roller portion comprises a drive wheel arranged to roll on an inner surface of the track. The drive section has an articulated joint coupling the first and second roller portions to each other. The drive section includes a motor to cause the drive wheel to rotate, whereupon the trolley rolls along the track, with the articulated joint enabling the first and second roller portions to pivot longitudinally with respect to each other so that the trolley can negotiate curves in the track.

Abstract: Vehicle intended to run on a track line comprising at least two track cables (2,A,B,C), the vehicle comprising at least one wheel support (3) intended to run on each track cable (2), and a platform (16) arranged between the wheel supports (3), each of said wheel support (3) comprising at least one wheel (12) to be placed on top of the track cables (2).

Abstract: The installation conveys persons from a valley station to a mountain station and for carries individuals from the mountain station to the valley station via carriages that are guided along a track formed by a running rail. The installation has a cableway system with a haulage cable and transport assemblies that can be coupled thereto and are intended for persons and for conveying devices that convey the carriages from the valley station to the mountain station. The haulage cable is guided over cable-deflecting pulleys in the valley station and in the mountain station. Guide rails are provided in the valley station and in the mountain station along which the conveying devices and transport assemblies, uncoupled from the haulage cable, are guided around the cable-deflecting pulleys with conveying wheels. Bypass rails are connected to the guide rails via diverters both in the valley station and in the mountain station.

Abstract: A suspension rail comprises a rail body (18) having slide track means (22,24) extending lengthwise of the rail, said slide track means (22,24) being adapted to slidably support hangers thereon. The general novelty is that the slide track means comprises two parallel tracks (22,24) of low friction plastics held in or by the rail body (18) and spaced by the rail body (18), so that a hanger (38) suspended on the rail contacts the rail only at the two tracks (22,24).

Abstract: A shock absorbing apparatus that absorbs a shock produced by an abutment of a traveler on a stop member when the traveler is brought to a stop at a predetermined position includes a leaf spring arranged adjacent the stop member in a substantially face-to-face relationship with a guideway. A free end of the leaf spring abuts slightly with the guideway or with a slight clearance from the guideway. A mid portion of the leaf spring is curved gradually from the guideway. The traveler is provided with a contact portion that passes over the free end of the leaf spring to contact with the curved mid portion before the traveler abuts with the stop member at the predetermined position.

Abstract: A current collector is used with an elongated, generally closed rail having a slot extending the length thereof and plural power conducting strips disposed within and extending the length of the rail, with the current collector providing power to a mobile machine. The current collector includes a wagon disposed within the rail and having plural sliding contact brushes each engaging a respective power conducting strip within the rail. An electrical connector and cable leads are connected to the wagon for coupling the sliding contact brushes to the mobile machine for powering the mobile machine. The wagon moves on first and second wheel assemblies which are detachably connected to respective forward and aft portions of the wagon and which travel over inner portions of the closed rail.

Abstract: According to this invention, a ski lift radio is provided whereby data are stored electronically and converted to an audio signal to be played by the radio and wherein the system is charged by means of an inductive charge receptor associated with the radio which is charged by means of a stationary inductive charger.

Abstract: An overhead support system. A riding surface is located over a space and supports at least one overhead cart from which a load is supported by a tension element. A plurality of spherical elements are positioned between the riding surface and overhead cart and are attached to either the cart or the riding surface. The load can be moved horizontally in the space by applying a horizontal force to the load causing the cart to move over the riding surface while carrying the load in the horizontal direction. In preferred embodiments the riding surface is an array of spoked rimless wheels. In other preferred embodiments the riding surface is a slot track, or the riding surface may be a combination of the array and slot tracks. In other preferred embodiments a hoist assembly is used to raise and lower the load. In a preferred embodiment the hoist assembly is located below the riding surface. In another preferred embodiment, the hoist assembly is located above the riding surface.

Abstract: A travelling mechanism for travelling rail having flange parts and web parts. The mechanism including rest running wheels located opposite to each other which can rest on the flange parts. The flange sides of the rail guide rollers are arranged parallel to web rest in front of and behind each running wheel on both sides. The guide rollers, like the running wheels, are rotatably mounted in lateral bars connected below the travelling rail. The lateral bars are spaced from each other and connected to each other by a connecting traverse. To create a travelling mechanism that is adjustable, whereby the running wheels always run relatively close to the web, the travelling mechanism be adjustable to different flange widths by the use of connecting traverses of different lengths. The spacing between the axes of the guide rollers is variable independently of the running.