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US 4,397,241 AGranted
System for laying a separation fabric on the subgrade of a railroad bed
OwnerGeorge R. Newmaninventor
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OwnerGeorge R. Newmaninventor
Estimating the term…
A system including method and apparatus for laying a separation fabric on the subgrade of a railroad bed. More particularly, the present invention provides a system for laying a separation fabric on the subgrade of an existing railway bed from which the ballast has been removed so that a continuous web of the material can be laid directly on the subgrade prior to reintroducing ballast back to the railway bed below the track and ties. When the ballast has been removed by apparatus such as an undercutter, the separation fabric is introduced without over stressing the track as by raising it high enough to accommodate a pay out roll of the fabric below the ties. The foregoing is accomplished by supporting a supply roll of fabric above the railway track generally parallel thereto, and directing the fabric web to a guide adjacent the bottom of the ties to a pay out roll or surface below the ties at an angle of approximately 45.degree. with the track so that the web can be directed around the surface so as to leave the surface parallel to the railroad track to be deposited on the subgrade.
A system for laying a separation fabric in continuous web form on the subgrade of a railroad bed from which ballast has been removed, the fabric when laid extending transversely at least to the opposite ends of the ties, comprising, in combination:
A system for laying a separation fabric in continuous web form on the subgrade of a railroad bed from which ballast has been removed, the fabric when laid extending transversely at least to the opposite ends of the ties, comprising, in combination:
A system for laying a separation fabric in continuous web form on the subgrade of a railroad bed, the fabric when laid extending transversely at least to the opposite ends of the ties, comprising, in combination:
A method for laying a separation fabric in continuous web form on the subgrade of a railroad bed from which ballast has been removed, comprising the steps of locating a supply roll of fabric above and parallel with the railroad track;
A method for laying a separation fabric in continuous web form on the subgrade of a railroad bed comprising the steps of locating a supply roll of fabric above and parallel with the railroad track;
Dependencies are inferred from the claim text.