Retarders suitable for wagon speed control and having means for holding them in their operative condition
AssigneeDowty Hydraulic Units Limited
InventorsDavid E. Bick, Christopher F. Flippance, Ian C. Parry
Life of this patent
Estimating the term…
Abstract
A retarder, suitable for reducing the speed of a wagon rolling along a railway track, includes a retainer, which is adapted to be secured upon or adjacent a rail of the track, and an hydraulic unit which is fitted in the retainer. A portion of the unit normally projects from the retainer thus to lie in the path of a wheel of the wagon so as to be engageable by that wheel. The portion is movable inwardly of the retainer to a position, out of the path, in which it permits the wheel to pass the retarder. The retarder includes holding mechanism for maintaining the portion in that position.
Claims15
A retarder, suitable for reducing the speed of a wagon rolling along a railway track, including a retainer which is adapted to be secured with respect to a rail of said track, an hydraulic unit which is so fitted in said retainer that a portion thereof, which normally projects from the retainer thus to lie in the path of a wheel of said wagon so as to be engageable by that wheel, is movable inwardly of said retainer to a position out of said path in which it permits said wheel to pass said retarder, and holding means movable into engagement with said portion for maintaining said portion in that position, wherein said portion of said hydraulic unit is so movable inwardly of said retainer by said wheel as in rolling along said rail it engages said portion.
A retarder, suitable for reducing the speed of a wagon rolling along a railway track, including a retainer which is adapted to be secured with respect to a rail of said track, an hydraulic unit which is so fitted in said retainer that a portion thereof, which normally projects from the retainer thus to lie in the path of a wheel, is movable inwardly of said retainer to a position out of said path in which it permits said wheel to pass said retarder, and holding means for maintaining said portion in that position, said holding means being mounted on said retainer and including a lever mechanism part of which is caused mechanically to engage said portion for holding it in said position.
A retarder, suitable for reducing the speed of a wagon rolling along a railway track, including an elongate retainer comprising at least two portions, each provided with a respective bore, and an intermediate portion formed integrally with, and extending between, said two portions thus to form a single member, said retainer being adapted to be secured directly upon a rail of said track by two bolt means each of which passes through a respective hole in said rail, and at least two telescopically contractible hydraulic units, each of which is slidingly fitted in a respective said bore of said retainer so that a portion of each unit, which in the extended condition of said unit projects from the retainer thus to lie in the path of a wheel of said wagon so as to be engageable by that wheel, is telescopically movable inwardly of said bore to a position out of said path of said wheel in which it permits passage of said wheel along said rail.
Dependencies are inferred from the claim text.