Title: Radial axle railway truck disc brakes

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Abstract: A railway truck has a pair of radial axles with journal bearings at their ends and an adaptor mounted on each journal bearing and arranged to support the truck framing for steering movements of the respective axles with respect thereto, rigid links connecting the diagonally opposite axle bearing adaptors via bifurcated yokes to accommodate horizontal turning movements in opposite senses of the respective axles, the adaptors being mounted on the axle bearings to permit limited relative movement of the axle bearings and of the respective axles transversely of the truck with respect to the adaptors, whereby to permit the respective axles, while held in parallelism by the diagonal links, to move transversely of the truck with respect to each other sufficiently to follow transverse offsets in the track rails such as may occur at turnouts and the like without placing excessive strains on the bearing adaptors and linkages. A compatible disc brake system comprises a single disc at the center of each axle adapted to be frictionally engaged by opposing shoes of a disc brake mechanism supported by the bifurcated yoke, the nose of which is connected to the truck framing intermediate the axles to accommodate free pivoting movement of the brake mechanism in the horizontal plane in accordance with corresponding movements of the axles.


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