Chairs And Plates Patents (Class 246/453)
  • Patent number: 10106933
    Abstract: A universal slide-plate includes a body and a drop-in shoulder member with a plurality of retaining members that cooperate to selectively connect the universal slide-plate and a stock rail to a rail platform and/or tie. The universal slide-plate has a slide surface configured to support a moveable point rail thereon. The universal slide-plate may be selectively removed and repositioned relative to a rail platform and/or tie.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 23, 2018
    Assignee: NARSTCO, INC.
    Inventors: Sean Keightley, Michael Del Guerrero, Steven Glenn Smith
  • Patent number: 8870127
    Abstract: A lock bearing for a points setting arrangement has a lock bearing screw penetrating a foot of a setting tongue and a spring package arranged between the foot and the screw head of the screw. Therefore the lock bearing screw can be tightened with a relatively narrowly definable torque range and still has the rotation reserve to bring the position of the head of the lock bearing screw into line with a hole in a safety plate mapping the screw head which then, upon being inserted as previously known, latches in place over the head of the lock bearing screw. An alternative embodiment has a lock bearing with a lock bearing screw penetrating a foot of a setting tongue and an anti-rotation ring enclosing the head of the lock bearing screw in an annular, force-fitted manner with an outer toothing and a safety plate matching the outer toothing.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: October 28, 2014
    Assignee: Siemens Schweiz AG
    Inventors: Walter Ackeret, Rudolf Herrmann, Andreas Infanger
  • Patent number: 8684317
    Abstract: A railroad switch point roller mechanism utilized with a rail, a moveable point and a ground supported tie. The mechanism includes a roller or wheel which turns relative to a wheel axis. A wheel support is also employed and holds the wheel relative to the ground supported tie. The support connects to the moveable point, such that the lateral movement of the wheel relative to the ground supported tie takes place when the moveable point travels laterally relative to the rail. An adjustor is also included for finely determining the up or down position of the wheel relative to the tie and the wheel support.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: April 1, 2014
    Inventor: Jim Arnold
  • Patent number: 8608115
    Abstract: A point rail is shiftable transversely on an upper face of a rail base plate between an engaged position bearing on a longitudinally extending and fixed stock rail and a disengaged position spaced transversely of the stock rail. A roller assembly has a mounting plate securable to the rail base plate, a roller support pivotal about a support axis on the rail base plate, a roller carried on the roller support, and a spring biasing the roller upward with a predetermined spring force into a lift position with the roller projecting upward past the upper face for supporting the point rail on the roller. Thus this assembly supports the point rail and, in the engaged position, presses it against the support cleats and the stock rail and it is an integral part of one of the rail base plates.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: December 17, 2013
    Assignee: Schwihag AG
    Inventors: Tilmann Ruetzel, Frank Meyer, Bernd Wientges
  • Patent number: 8430364
    Abstract: A roller assembly for facilitating movement of a switch rail between two positions. In one embodiment, the roller assembly includes a frame adapted for attachment to the switch rail and having a pocket formed therein, and an elastomer assembly, at least a portion of which is slidably disposed within the pocket. The elastomer assembly includes a roller wheel and an elastomeric block. The roller wheel travels along the surface of a tie plate when the switch rail is moved between positions. The elastomeric block is adapted to compress under a load applied to the switch rail in the direction of the tie plate, causing the roller wheel to retract in the direction of the pocket. When the weight of a train is exerted on the roller assembly, the compression of the elastomeric block causes the train to ride fully on the rails, just as if the roller assembly were not present. When no weight is exerted on the roller assembly, the roller assembly assists the switch to move freely between positions.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: April 30, 2013
    Assignees: Eco-Production Vresova Spol. S R O, IAT International, Inc.
    Inventors: Avraham Ashkenazi, Seth Fleishman, Ivo Chládek, Václav Suchan, Radek Lucovi{hacek over (c)}
  • Patent number: 7874527
    Abstract: A rail fastening apparatus fastens an inner stock rail in a railway slide chair assembly. The apparatus includes a base plate. The base plate has on one face a rail seat region on which the inner stock rail sits when the slide chair assembly is in use. A resilient rail fastening clip restrains the inner stock rail. A locating means locates the rail fastening clip in a first position. A loading means vertically deflects the clip so as to produce a load in a toe portion of the clip.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: January 25, 2011
    Assignees: Pandrol Limited, VAE Eisenbahnsysteme GmbH, VAE GmbH, BWG GmbH & Co. KG
    Inventors: John Phillip Porrill, David Ronald Seeley, Heinz Ossberger, Josef Leitner, Hans-Ulrich Dietze, Hubertus Höhne
  • Patent number: 7766283
    Abstract: The invention relates to a device (1) which is used to lift and displace the tongue blade (2) of a rail (6), comprising at least two rollers (12, 14) whereby the axes thereof are arranged in an essentially parallel manner in relation to a running rail (4), in order to displace the tongue blade (2) in a transversal manner in relation to the running rail (4), at least two support carrier pins (22, 24) which respectively support a roller (12, 14), and a base body (8) which supports the carrier pins (22, 24). The rollers (12, 14) have a projection which projects in at least one first direction in relation to the base body (8). The inventive device is characterised in that a covering (10) is arranged between at least two adjacent rollers and is oriented towards the first direction and at least partially covers a passage between the at least two adjacent rollers (12, 14).
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: August 3, 2010
    Assignee: CDP Bharat Forge GmbH
    Inventors: Bernd Lesemann, Frank Bornscheuer
  • Patent number: 7530535
    Abstract: A railroad switch point having fixed rails and switching rails is provided. The switch point includes a first railroad tie having a top side. The switch point also includes a rod positioned at the top side of the first railroad tie. The rod is coupled to the switching rails and is also coupled to a switch actuator. A first rail support is secured to the top side of the first railroad tie for supporting the fixed rails and the switching rails above the rod.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: May 12, 2009
    Inventor: David K. Fox
  • Publication number: 20080087773
    Abstract: A rail support forms an upwardly directed generally planar slide face, a longitudinally extending running rail secured to the support and having a foot. A longitudinally extending switch blade adjacent the rail is shiftable above the slide face between an inner position closely transversely juxtaposed with the running rail and an outer position transversely spaced from the running rail. A frame defines a longitudinal outer axis spaced transversely along the slide face from the running rail, a longitudinal middle axis between the outer axis and the running rail, and an inner axis between the middle axis and the running rail. Respective outer, middle, and inner rollers are carried on the frame and rotatable about the respective axes. The middle roller is axially offset from the inner and outer rollers and is of such a diameter that it radially overlaps the inner and outer rollers.
    Type: Application
    Filed: October 4, 2007
    Publication date: April 17, 2008
    Inventor: Frank Meyer
  • Patent number: 7185860
    Abstract: A modular tongue switch assembly comprises a tongue pivotally connected to a slide surface, held down by a pivot retainer. The slide surface consists of slide plate sections removably attached to corresponding bed plate sections, which are in turn welded onto a base plate. Floating brace blocks hold a non-integral stock rail in place on the base plate. When the tongue moves, a horizontal lever arm actuates an inner box assembly housed within an outer box and containing the conductor rail, allowing the passing train to maintain contact with the conductor rail, if necessary. A novel rodding and lever arrangement is used.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: March 6, 2007
    Assignee: VAE Nortrak North America, Inc.
    Inventors: Cory O'Brien, Gary Click
  • Patent number: 7063293
    Abstract: In a roller device (6,7) for a movable point of frog (1), including a sliding strip (18) and at least one roller (11) and at least one roller bearing (12) fixed to a stationary part of the switch, the roller(s) (11) is/are mounted on an arm (19) of a double-armed lever (10). The pivot bearing (12) of the lever (10) is arranged in a support (13) connected with a stationary part of the switch, wherein the arm (18) facing away from the roller(s) (11), of the double-armed lever (10) is pivotable against a spring (19) with adjustable spring power.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: June 20, 2006
    Assignees: VAE Eisenbahnsysteme GmbH, VAE GmbH
    Inventors: Josef Leitner, Hannes Feldbaumer, Franz Stelzer
  • Patent number: 6997419
    Abstract: An adjustable gage plate assembly having a pair of gage plate ends each with rail seats that are connected at their inner ends to swivel slide plates of an adjustment assembly which enables the gage plate ends to be moved laterally and angularily relative to each other such that the gage plate assembly may be adjusted to a specified lateral distance and angle between the gage plate end rail seats.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: February 14, 2006
    Assignee: Cleveland Track Materials, Inc.
    Inventors: James A. Remington, Joseph A. Martin, Karl E. Axthelm
  • Patent number: 6955326
    Abstract: A modular tongue switch assembly comprises a tongue pivotally connected to a slide surface, held down by a pivot retainer. The slide surface consists of slide plate sections removably attached to corresponding bed plate sections, which are in turn welded onto a base plate. Floating brace blocks hold a non-integral stock rail in place on the base plate. When the tongue moves, a horizontal lever arm actuates an inner box assembly housed within an outer box and containing the conductor rail, allowing the passing train to maintain contact with the conductor rail, if necessary. A novel rodding and lever arrangement is used.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: October 18, 2005
    Assignee: Vae Nortrak North America Inc.
    Inventors: Cory O'Brien, Gary Click
  • Patent number: 6464177
    Abstract: With a device for switching switch tongues the tongue tip of which lies on a roller plane of a slide chair, the switch tongue can be switched more easily when the front roller (7a) of a roller pair (6) is positioned lower than the rear roller (7b).
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: October 15, 2002
    Assignee: Schwihag Gesellschaft für Eisenbahnoberbau mbH
    Inventor: Armin Heim
  • Patent number: 6305614
    Abstract: A T-shaped electrically insulated member for securing to rails having electric current passing therethrough. The electrically insulated rail member includes a metallic core and an electrically insulating material encasing the metallic core. The electrically insulated rail member can be used as a gauge plate or a switch plate. Bushings are received by the electrically insulated rail member for receipt of fasteners secured to adjacent rail members. Also disclosed is a method for manufacturing the electrically insulated rail member.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: October 23, 2001
    Assignee: Portec Rail Products, Inc.
    Inventors: Kevin R. Adkins, William T. Urmson, Jr., John S. Cooper, John W. Mospan
  • Patent number: 6189840
    Abstract: A ‘ROLLER DEVICE FOR DISPLACEMENT OF RAILROAD SWITCHING RAILS’ comprising a basic structure (10), provided in its end with a stylized horizontally-S-shaped laminar locking rib (1), the structure (10) being centrally provided with a pair of trapezium-shaped longitudinal plates (2) parallel to each other. The ends of the shafts (4) of corresponding rollers (5) being attached to cuts (3) of the plates (2). On the opposite end of the basic structure (10), it is defined a L-shaped laminar rib (8), which is mounted on a transversal support (11) defined by a U-shaped folded plate with horizontal extends (11a).
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: February 20, 2001
    Assignee: Companhia Vale do Rio Doce
    Inventors: Gilson Etore Mantovan, Isnad Torres Pires, José Roberto Fehlberg, Reynaldo Lopes Ferreira
  • Patent number: 5899417
    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).
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: May 4, 1999
    Assignee: VAE Aktiengesellschaft
    Inventors: Hannes Gsodam, Heinz Ossberger
  • Patent number: 5628480
    Abstract: A switch blade rolling device has a suspended rolling support on which the switch blade is moved, a body provided with a hook, side parts, a transverse end wall with an end opening and a bottom transverse wall with a bottom opening. The clamping claw is anchored in the end opening and the elastic support is screwed into the bottom opening. The free end of an oscillating lever is supported at the top on the elastic support and is mounted in the longitudinal direction with an oscillating lever bolt between side parts. The oscillating lever carries two rollers on roll bolts. The first roller is arranged above the elastic support and is mounted in the longitudinal direction with an oscillating lever bolt between side parts. The oscillating lever carries two rollers on roll bolts. The first roller is arranged above the elastic support and the second roller is arranged between the oscillating lever bolt and the first roller.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: May 13, 1997
    Assignee: Eco Production Vresova, SPOL. S.R.O.
    Inventors: Pavel Vrsecky, Jiri Walter
  • Patent number: 5622340
    Abstract: A rail switch point assist apparatus includes an elongated main member having an outward end removably and adjustably connected to the railroad track running rail and the inner end adjustably connected to a support member extending between a pair of ties. The inward end of the main member is vertically adjustable relative to the support member, and a pair of rollers are rotatably mounted between the inward end and the track running rail. The rollers are mounted on the main member to support a rail switch point moving towards and after from the track running rail. The outward end of the main member includes a bracket which is pivotally and slidably mounted to the main member so as to pivot about an axis transverse to the longitudinal axis of the main member and being slidable along the longitudinal axis of the main member.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: April 22, 1997
    Assignee: Double T Railroad Products
    Inventors: Charles W. Turner, Michael K. Flaherty
  • Patent number: 5582371
    Abstract: A rail flange securement clamp for adjustably mounting a switch point roller assist apparatus on a railroad rail includes a base plate and a top plate, the top plate generally upwardly spaced from the base plate and an adjustable connection device extending between and connecting the base plate and top plate for increasing and decreasing the distance between the base plate and top plate. A rail flange engagement plate having a base section and a rail flange engagement section is adjustably mounted on the securement clamp above the top plate such that the base section is mounted above the top plate and the rail flange engagement section extends outwardly from the top plate for engagement of a flange of a railroad rail thus securing a switch point roller assist apparatus on the railroad rail.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: December 10, 1996
    Inventors: John Humphrey, Dean Wieser
  • Patent number: 5562267
    Abstract: A box sleeper (1), characterized by a steel box-like sleeper section member (5) which has a cross-sectional width (15) and a cross-sectional height (16) matching that of a normal concrete or wooden sleeper and has an open part (31) on top and is closable at its ends by transverse plates (17 and 18) and has laterally projecting bearing flanges (13 and 14) for stockrail fasteners (28, 29), points-tongue slide chairs (30) and/or operating components of tip fasteners. The box-like sleeper section member (5) is associated with tip fasteners in the form of "latch fasteners" (33) comprising stationary guides (32) and movable latches (34), cam rods (34) and cam-rod bearings (37), all of which project into the upper part (31) of the box-like sleeper section member (5), whereas the bottom part houses the points-tongue slide rods (54), the tongue-monitoring linkage (45), heating rods (43) if any, and shock-absorbing elements (38).
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: October 8, 1996
    Assignee: Schwihag GmbH
    Inventors: Armin Heim, K. Ohm, K Spiegel, Rudolf Kopl, Jurgen Kruger, Volker Klein, Hans-Joachim Scholte
  • Patent number: 5509626
    Abstract: A railroad track switch has tongue rails which pivot relative to fixed stock rails and rolls onto which the tongue rails move when pivoted away from the stock rails. The rolls are carried at opposite ends in spring supports and each roll is mounted for level adjustments in the respective supports. Outer ends of the spring supports are themselves mounted for back and forth adjustments towards and away from the stock rails.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: April 23, 1996
    Assignee: Enzesfeld-Caro Metallwerke AG
    Inventor: Andreas Fodor
  • Patent number: 5501418
    Abstract: A switch point roller assist apparatus includes an elongated main support structure on which is movably mounted a rail securement clamp for releasably adjustably connecting the main support structure to a railroad rail. An elongated tie bar is adjustably mounted on the main support structure generally perpendicular to the main support structure. A roller support cage is pivotally adjustably mounted on the main support structure, the roller support cage supporting at least one roller rotatably mounted thereon, each roller mounted generally perpendicular to the main support structure. The tie bar is adjustably mounted to the main support structure such that the position of the tie bar is vertically adjustable relative to the main support structure. Finally, the roller support cage is adjustably mounted on the main support structure such that the position of the rollers is vertically adjustable relative to the main support structure.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: March 26, 1996
    Inventors: John Humphrey, Dean Wieser
  • Patent number: 5499786
    Abstract: In a device for facilitating the re-positioning of moveable rails or rail components, in particular of tongue rails (7), in which the rails (7, 7'), during the re-positioning operation are supported on rollers (10, 10') forced against the underside of the rail base by spring action, the rollers (10, 10') in at least one end position (7, 7') of the re-positioning operation are pressed by the force of the spring against one edge (14, 15) of the rail base. In this way it is possible to combine the advantages of reduction of the sliding friction during the re-positioning operation with a flexible securing of the end position of the currently involved adjusted position of the moveable rail or rail component (7, 7').
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: March 19, 1996
    Assignee: Voest-Alpine Eisenbahnsysteme Aktiengesellschaft
    Inventors: Gerald Durchschlag, Herbert Klein
  • Patent number: 5482231
    Abstract: A rail switch point assist apparatus includes an elongated main member having an outward end removably and adjustably connected to the railroad track running rail and the inner end adjustably connected to a support member extending between a pair of ties. The inward end of the main member is vertically adjustable relative to the support member, and a pair of rollers are rotatably mounted between the inward end and the track running rail. The rollers are mounted on the main member to support a rail switch point moving towards and after from the track running rail. The outward end of the main member includes a bracket which is pivotally and slidably mounted to the main member so as to pivot about an axis transverse to the longitudinal axis of the main member and being slidable along the longitudinal axis of the main member.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: January 9, 1996
    Assignee: Double T Railroad Products
    Inventors: Charles W. Turner, Michael K. Flaherty
  • Patent number: 5390881
    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.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: February 21, 1995
    Assignee: BWG Butzbacher Weichenbau GmbH
    Inventors: Sebastian Benenowski, Erich Nuding, Hans-Ulrich Dietze
  • Patent number: 5356224
    Abstract: In the case of a device for fastening of at least one exchangeable elongate slide insert (5), in particular synthetic plastics material slide inserts, in recesses of a slide base or ribbed plate (4), in which the side surfaces of the slide insert (5) are at least partly gripped by inwardly-sloping or undercut walls of the recesses, the slide inserts (5), on their underside and transversely to their longitudinal axis, have a straight-line groove, in which case the slide base or ribbed plate (4) on its upper side has a groove open towards the top in alignment with the groove in the insert, and the groove in the slide base or ribbed plate (4) and the groove in the slide insert (5), in the locking-in position, define a clear opening for the insertion of a rod-shaped locking-in member (7), the free ends of which project, in a plastically deformable mariner, beyond the edges of the slide base or ribbed plate.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: October 18, 1994
    Assignee: Voest-Alpine Eisenbahnsysteme Aktiesengesselschaft
    Inventor: Gerald Durchschlag
  • Patent number: 5133522
    Abstract: A process for producing a crossing frog with moving point (1) for very long railway switches incorporated in long welded rails. The frog also comprises a cradle (2) in two elements (3 and 4), one molded and the other not molded. The method comprises welding, on a point side of the frog, the molded element (3) of the cradle (2) to the rolling rails (7) of an intermediate track of a branch, fixing parts (5 and 5') to the moving point (1) so as to form the non-molded element (4) of the cradle (2); rigidifying the non-molded element (4); interconnecting, by means of a non-welded joint, the subassembly formed by the molded element (3) welded to the rolling rails (7) and the subassembly formed by the non-molded element (4) formed by the parts (5 and 5') and the moving point (1), and finally, welding the moving point (1) to the rolling rails (9) on a heel side of the frog.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: July 28, 1992
    Assignee: Cogifer (CIE Generale d'Installations Ferroviares), S.A.
    Inventor: Gerard Testart
  • Patent number: 5127613
    Abstract: The antifriction insert (1) for slide surfaces of switching devices is fixed to a base member (5) in that the base member includes a recess with grooves at both sides. At least one of the grooves has upwardly open hollows (9). The antifriction insert has projections associated with these hollows (9) so that the antifriction insert can be introduced from above into the base member (5) and then only needs to be displaced by the length of the projections in order to obtain safe securing.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: July 7, 1992
    Assignee: Magna Holding Anstalt
    Inventor: Urs Germann
  • Patent number: 5125603
    Abstract: A railway structure for a sliding chair (2), a sliding plate and a ribbed plate (1), respectively, for railway switches or railway crossings. The structure includes friction-reducing sliding members (4, 5) of synthetic plastic material being releasably mounted within recesses (3) in the sliding chair (2) and the plates, respectively. There are accommodated within each recess (3) at least two sliding members (4, 5) having their side surfaces engaged over the major part of the periphery by inwardly protruding walls or profiles of the edge of the recess, so that there results a safe mounting in position of the sliding members (4, 5). The structure makes the interchange of the sliding members a simple procedure.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: June 30, 1992
    Assignee: Voest-Alpine Zeltweg Gesellschaft m.b.H.
    Inventors: Hermann Orasche, Johann Rieger, Heinz Steiger
  • Patent number: 4890804
    Abstract: Disclosed is an improved turnout unit to be employed in turnout point of railway tracks, which does not necessitate maintenance of the sliding surface of the base plate. In the turnout unit of the present invention, a spray-coated ceramic layer is formed on the base plate and the tongue rail slides on the ceramic layer.
    Type: Grant
    Filed: January 21, 1988
    Date of Patent: January 2, 1990
    Assignees: Nippon Sharyo Seizo Kabushiki Kaisha, Kanto Bunkiki Kabushiki Kaisha
    Inventors: Tomihiko Teramoto, Hidehiko Ono, Sadanobu Ito, Kiyoshi Nishino
  • Patent number: 4634087
    Abstract: A grooved rail switch with a tongue rail device includes a tongue rail displaceably supported on a torsion-stiff support box for movement between a stock rail and a switch rail. The support box is made up of an upper slide plate, a lower bottom plate and flat bars extending between and welded to the slide plate and bottom plate. High strength bolts secure the stock rail to one side of the support box and the switch rail to the other side.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: January 6, 1987
    Assignee: Elektro-Thermit GmbH
    Inventor: Bernd-Joachim Kempa
  • Patent number: 4105175
    Abstract: The invention relates to a device for a switching point of a railway track, said switching point comprising two movable tongue-rails controlled in such a manner that their ends may be brought in contact with line-rails, or be separated therefrom, by a sliding movement over bearings carried by sleepers, said device being placed in the space between two bearings and comprising a sliding part or piece supporting at least one tongue-rail on a self-lubricating sliding surface, said part or piece being influenced by elastic springs or the like to lift the tongue-rail or rails which it supports with respect to said bearings, in such a manner that said tongue-rail or rails are not in contact with said bearings during the sliding movement of the tongue-rail or rails, but come directly into contact with the bearings under the influence of the load of a railway vehicle passing over said tongue-rail or rails.
    Type: Grant
    Filed: June 29, 1977
    Date of Patent: August 8, 1978
    Assignee: Gestivalmo Societe Anonyme Holding
    Inventor: Michel R. De Spiegeleer