Roller rail clamp
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United States of America Patent
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-
Dec 21, 2004
Grant Date -
Sep 25, 2003
app pub date -
May 30, 2003
filing date -
Jun 14, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
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 spaced-apart lift roller assemblies mounted to a support for positioning a pair of clamping to a rail of the track, each the lift roller assembly comprising at least one pair of rollers, wherein each the roller of a roller pair rotates on an axis in an essentially vertical plane adjacent a rail and the rollers are on opposite sides of a rail when a lift roller assembly is clamped thereto with the head of the rail releasably retained upwardly of flanges at the lower ends of the rollers; means for adjustably connecting the apparatus to a carrier thereof; a lift mechanism for adjusting the vertical position of the support relative to the carrier of the apparatus; and a tilt mechanism for applying torque about a horizontal axis to linkage between members of a pair of lift roller assemblies.
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