Marshalling yard retarder

Details Marshalling yard retarder Marshalling yard retarder

1982-03-22

1984-11-06

Beltran, Howard

Brakes

Vehicle

Railway

104 26A, 104252, 104257, 188290, B61B 100, B61K 702, F61D 5700

Patent

active

044807236

ABSTRACT:
In a retarder system for railway wagons, a retarder device which includes a rotatable cylinder resiliently urged into a working position adjacent a rail and provided with a flange with a helical contact surface. The flange of a railway wagon wheel which passes in a working or first direction influences the contact surface of the cylinder to set the cylinder rotating thereby pumping a hydraulic medium through a throttled opening to obtain a braking action. The cylinder is provided with an elongated projection arranged parallel to the axis of the cylinder, which extends radially from the cylinder and is directed, in a position of readiness of the cylinder, substantially towards the rail. Upon passage of a wheel of a railway wagon, travelling in a return or second direction opposite to the first direction, past the retarder device, the projection acts to prevent the cylinder from being rotated about its axis when the wheel contacts the flange to move the cylinder against the resilient biasing out of its working position.

REFERENCES:
patent: 3128721 (1964-04-01), McGowan
patent: 3332519 (1962-07-01), Danieli

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