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7523707 |
Machine and method for welding rails of a track
A machine for welding the rails of a track includes a rail pulling device that grips the rail ends and pulls them together so that they can be welded to one another. Two rail clamps provided for...
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7395139 |
Condition monitoring system
A system is disclosed for monitoring condition of a railways installation such as a points machine. The system includes a plurality of sensors (S 1 , S 2 , S 3 -S N ) associated with elements of...
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7089867 |
Device for lifting and re-positioning a track used in television and motion picture industries
A device for use in television and motion picture industries lifts and re-positions a track on which camera dolly or crane is located. The device includes a first bar member of a substantially...
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6832559 |
Roller rail clamp
The invention provides roller rail clamp apparatus for use in lifting a rail for operations such as replacement of ballast or resurfacing of a railway. The apparatus comprises parallel pairs of...
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6651353 |
Rail alignment tool
A rail alignment system for locating a first end piece and a second end piece of a first rail section and a second rail section. The rail alignment system comprises (a) a first rail alignment tool...
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6637340 |
Rail pulling system
A rail pulling system for efficiently drawing the ends of two rails together. The rail pulling system includes an elongate frame, a control unit, a first sliding unit and a second sliding unit, a...
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6637727 |
Rail puller including a clamping beam and two clamping members and a method thereof
A rail puller that applies tension to rail sections to reduce the gap between the ends of rail sections. The rail puller comprises a first clamp assembly and a second clamp assembly located at...
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6622633 |
Railroad machine centering system
A railway maintenance device movable on a railroad track having a pair of spaced rails, the device including a frame configured for movement relative to the track and having at least two side...
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6546876 |
Tamping machine having a measuring sensor coupled to mechanical measuring device on an auxiliary track
A mobile tamping machine for tamping ballast under a railroad track includes a machine frame supported on undercarriages running on a main track for moving the machine in an operating direction. A...
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6385861 |
Rail alignment tool
A rail alignment system for locating a first end piece and a second end piece of a first rail section and a second rail section. The rail alignment system comprises (a) a first rail alignment tool...
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6375402 |
Apparatus for unloading rails
An apparatus for unloading rails from a freight car on which the rails are arrayed to extend in a longitudinal direction of the freight car comprises a track-bound car, and a rail guiding unit...
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6260485 |
Method for correcting the position of a track
The position of a track is corrected on the basis of the independent and separate measurement of the level errors of each track rail, and by concentrating the correction work on the most egregious...
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6220170 |
Method of correcting the position of a railroad track
A method of correcting the position of a railroad track composed of laterally adjacent track sections connected by branch tracks comprises the steps of measuring the position of each individual...
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6158352 |
Machine and method for rehabilitating a track
A mobile machine for rehabilitating a track has a machine frame extending in a longitudinal direction and supported by undercarriages for mobility on the track in an operating direction, the...
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6089163 |
Apparatus for adjusting the distance between rails
A system for adjusting the separation distance between adjacent rails over which vehicles travel, the apparatus including a vehicle moveable along the rails and including a boom or pivoted art...
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5887527 |
Track lining machine
A track lining machine comprises a machine frame supported on the track by undercarriages, a track stabilization assembly vertically adjustably mounted on the machine frame and engaging the track,...
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5640909 |
Method and machine for tamping and stabilizing a track
A track is tamped and stabilized at a desired level by lifting the track to a temporary level, intermittently tamping the track and then advancing along the track in an operating direction in...
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5619929 |
Track tamping machine, machine arrangement and method
A mobile track tamping machine for simultaneously tamping ballast under a plurality of track ties comprises a machine frame extending in a longitudinal direction and supported by undercarriages on...
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5617794 |
Track stabilization machine having stabilization units linked to oscillating out of phase with each other
A dynamic track stabilizer comprises a machine frame supported on the track by undercarriages for mobility along the track, and two track stabilization units linked to the machine frame by vertical...
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5617793 |
Method of tamping a plurality of ties simultaneously
A method of tamping a plurality of ties fastened to rails of a track comprises repeated cycles of a first tamping operation comprising the steps of lifting the track to a desired level and...
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5605099 |
Maintenance vehicle and method for measuring and maintaining the level of a railroad track
A maintenance vehicle and associated method for measuring and correcting the level of a railroad track in a single pass. An instrument carriage, or frog, is towed by and in fixed relationship to...
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5598782 |
Methods of railway track maintenance
A method of adjusting the geometry of a stretch of a railway track uses a track maintenance machine which runs on the track and which has at least one measuring reference system (13) guided by...
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5591915 |
System for the continuous measurement of the resistance of a track to transverse displacement
A method of continuously measuring the resistance of a track to transverse displacement comprises the steps of continuously advancing a dynamic stabilizer along the track, applying a power to the...
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5528991 |
Apparatus and associated methods of laying track
Track laying apparatus and associated methods are provided for installing rails on blocks. In a preferred embodiment, a track laying apparatus has an installation portion for installing the blocks...
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5481982 |
Track surfacing machine and method for correcting the track geometry based on track cant and measured lining force
A track surfacing machine for correcting the track geometry includes a machine frame supported by undercarriages for mobility in an operating direction and including lining drives for correcting...
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5477787 |
Mobile track working machine performing track lining and ballast tamping in a first direction and ballast sweeping and plowing in the opposite direction
A mobile track tamping and ballasting machine movable along a railroad track in a first operating direction and a reverse direction, which comprises a first machine frame, a second machine frame,...
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5419259 |
Machine for compacting track ballast with variable gauge track stabilizer
A mobile machine for compacting ballast comprises a machine frame extending in a longitudinal direction and supported by undercarriages on the track rails, and a ballast bed stabilizing apparatus...
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5379700 |
Two machine arrangement for track tamping in switches having track lifting units mounted only on first machine
A mobile track tamping machine arrangement comprises a first machine and a second machine, each machine comprising a self-propelled elongated machine frame supported on undercarriages running on...
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5329856 |
Continous action tamping machine
A mobile machine for leveling, lining and tamping a track, has an elongated machine frame supported on undercarriages for continuous movement along the track in an operating direction during a...
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5299505 |
Ballast tamping machine having pivotable and extendable auxiliary lifting and lining unit for branch track
A ballast tamping machine comprises a machine frame supported on undercarriages, a tamping unit vertically adjustably mounted on the machine frame and comprising reciprocable vibratory tamping...
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5297482 |
Rail threader
A rail threader comprising a top plate having side plates extending downwardly from the opposite sides thereof. A vertically disposed plate extends upwardly from the top plate and is adapted to...
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5295440 |
Rail puller, with wedge clamp
A rail puller for attachment to the end of a rail comprising a top plate having side plates extending downwardly therefrom in a spaced-apart relationship. The bottom surface of the top plate is...
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5231929 |
Ballast cleaning machine with vibrator attached to track lifting unit for vibrating the unit transversely when replacing track on the ballast
A mobile ballast cleaning machine comprises a machine frame, undercarriages supporting the machine frame for mobility on the track, an excavating chain mounted on the machine frame and arranged to...
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5172635 |
Track working machine for the controlled lowering of a track
A track working machine for the controlled lowering of a track comprises a machine frame, at least one undercarriage supporting the machine frame on the track for mobility in an operating...
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5172637 |
Track surfacing machine for the controlled lowering of the track
A continuously advancing dynamic track stabilization machine comprises a first cross level measuring element arranged at the machine frame front end and generating reference signals corresponding...
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5157840 |
Method of and an equipment for determining the position of a track
In the method, the actual position of a track (1) is measured and the theoretical position is calculated, and the distance therebetween is calculated or measured, the track repair being controlled...
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5113767 |
Continuous action ballast compacting machine
A continuously advancing track working machine for compacting ballast comprises a self-propelled machine frame supported by undercarriages on the track for mobility in an operating direction and a...
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5052306 |
Mobile track position correcting and tamping machine
A mobile track leveling, lining and tamping machine comprising a ballast tamping assembly mounted on an elongated machine frame and a track lifting and lining unit for correcting the position of...
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5046270 |
Mobile ballast clearing and planing machine
A mobile machine for clearing and planing ballast comprises a machine frame, undercarriages supporting the machine frame for mobility on the railroad track, at least one vertically and transversely...
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5036594 |
Method and apparatus for gauging the corsslevel and warp of railroad tracks
The crosslevel measuring adapter includes a battery-powered electronic level sensor, a processor unit, a display, and data, display and power switches mounted in a housing through which an...
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5012413 |
Railroad track curve lining apparatus and method
The specification discloses an improved railroad track curve liner for more accurately locating track transition points to more accurately calculate an improved track configuration as a funcion of...
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5007350 |
Universal mobile track leveling, lining and tamping machine
A universal mobile track leveling, lining and tamping machine useful for work in track switches and tangent track comprises four ballast tamping units mounted between the undercarriages of the...
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5007349 |
Mobile track leveling, lining and tamping machine
A mobile track leveling, lining and tamping machine comprises four ballast tamping units mounted between the undercarriages of the machine and immediately preceding the rear undercarriage in the...
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4955302 |
Mobile tie gang apparatus
A mobile apparatus for sequentially exchanging selected consecutive groups of oil ties in an existing railroad track for groups of new ties while retaining groups of old ties therebetween to...
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4947757 |
Method and machine arrangement for working in a track switch section
A method of working a main track and a laterally adjacent track in a track switch section in tandem comprises the steps of intermittently moving a track leveling, lining and tamping machine with...
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4928599 |
Continuously advancing track leveling, lining and tamping machine
A continuously advancing machine for track leveling, lining and tamping comprises a main frame, a single undercarriage supporting the main frame and the main frame having a portion projecting in...
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4905604 |
Mobile switch leveling, lining and tamping machine
A mobile switch leveling, lining and tamping machine comprises a vertically and laterally adjustable leveling and lining tool carrier frame linked to the machine frame, a pair of flanged wheels...
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4903608 |
Machine for laterally displacing a track
A machine for laterally displacing a track comprises at least one vertically adjustable tamping head having reciprocable vibratory tools for tamping ballast under the ties; a compact operating unit...
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4893565 |
Mobile track switch working machine
A mobile track working machine comprises a machine frame and an apparatus for lifting and laterally moving the track in a switch section, which apparatus comprises a vertically and laterally...
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4881467 |
Continuously advancing track maintenance or rehabilitation machine
A continuous action track maintenance or rehabilitation machine comprises a first machine frame, a carrier frame arranged between the undercarriages supporting the first machine frame on the track,...
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