The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 1976
Filed:
Nov. 11, 1974
John Kenneth Stewart, Columbia, SC (US);
Canron, Inc., New York, NY (US);
Abstract
A method and apparatus for aligning track and compacting ballast therebetween. A pair of shoes contoured to fit the shoulder of the ballast is placed in contact with the shoulder whereby each shoe is located on the outside of a respective one of the rails and extends in a longitudinal direction along the shoulder. A vibration device is used to fluidize portions of the ballast beneath each of the shoes and between each shoe and the ends of the adjacent ties. A lifting jack is articulately connected to each shoe and the two jacks apply a lifting force to the rails substantially equal to the weight of the track by means of laterally and vertically adjustable clamps adapted to grasp each of the rails. A lateral force is then applied to the rails by means of the clamps to displace the track in a substantially horizontal position through said fluidized ballast. The shoes have an appropriate surface area whereby the applied forces per unit area on the shoes are of a magnitude to substantially prevent vertical and lateral movement of the shoes in the ballast during the vibration and aligning operation.