Railroad track rail
AssigneeThe Raymond Lee Organization, Inc.
InventorJohn F. Halpenny
Life of this patent
Estimating the term…
Abstract
A rail track that reduces noise and vibration for particular use in rapid transit and subway lines. The track is formed of a conventional rail embedded in a pre-stressed concrete bed. Sections of such jacketed rails are joined together by means of flanges, one of which is welded to one side of each rail end, with the bolt holes in the flanges and the joined rails oriented at an angle to axes of the rails so as to transfer a tension load between each rail of a joint. The pre-stress tension wires of the concrete bed extend beyond the ends of each section and are individually joined by turnbuckles or other tension creating couplers. The bottom of each concrete bed section is mounted on a solid sheet of rubber or other elastomer.
Claims1
A railroad track support comprising individual modules, each module comprising a length of steel rail partially embedded in a concrete bed which extends in the axial direction of the rail;
- first and second joint means which join two such modules along a common axial orientation so that the end faces of the concrete beds of two such joined modules detachably abut directly against each other and so that said joined modules transmit both compression and tension axial forces as a unit;
- said first joint means comprising two splice bars, one each on opposite sides of the rails of two axially abutting modules, said splice bars formed with splice holes, the axes of which are oriented at a diagonal angle to the axis of the joined rails when a pair of said splice bars are bolted about two such joined rails, said diagonal axes of the splice holes permitting each bolt fastened through said splice bars to apply an axial tension load to the joined rails, and an axial compressive load to the abutting concrete beds, with
- said rails being shorter in length than the overall length of the concrete beds of the modules, so that the opposed end sections of the concrete beds extend beyond the respective end sections of the steel rails;
- each said concrete bed encasing longitudinal tension members;
- each said concrete bed formed on each end with one or more open recesses extending from the end face of each said end, with a first set of said tension members extending beyond the said end faces and a second set of said tension members extending into said open recesses, said recesses oriented so that when two such modules are joined in abutting relationship along a common longitudinal axis, each of the second set of tension members of each module extends into said recess of the other module;
- said second joint means comprising fastening means, each of a size to fit into a said recess, for joining together under an adjustable tension force, the two tension members of two abutting modules which extend into a common said recess so as to draw the two modules together to provide a pre-set axial compression force in the concrete beds of the two modules.
Dependencies are inferred from the claim text.