Abstract: An improved mounting bracket for supporting a disc brake actuator assembly on a railcar truck, the mounting bracket being a cast metal bracket designed to bolt onto a portion of the truck frame, the bracket being generally H-shaped in cross section along a major portion of its length with the "H" being generally disposed horizontally so that the two sides of the H comprise upper and lower substantially solid horizontal walls.

Abstract: A device for mounting third rail engaging equipment on a railway truck comprises a fixed part mounted on and extending outwardly from a side member of a railway truck and a vertically moveable part pivotally mounted on the fixed part and mounting the third rail engaging equipment support, the moveable part being normally latched to the fixed part for maintaining the third rail engaging equipment such as current collectors and sleet scrapers at optimum operating pressure against the third rail, and arranged for automatic release responsive to receipt by the third rail engaging equipment of a predetermined upward impact from the third rail whereby to protect the third rail engaging equipment and its supports from the truck structure against impacts in excess of the predetermined impact, and for automatic gravity-responsive resetting whereby to cause the third rail engaging equipment to continue functioning at its optimum operating pressure.

Abstract: Apparatus for tramming the wheel and axle assemblies of railway trucks having sideframes and a transverse frame member supported on sideframes, the sideframes being supported at their ends on structures carried on the end portions of the axles, including a fixture having apertures defining the trammed positions of the journal boxes, vertical axis cylindrical apertures in the end portions of the sideframes adapted for general vertical alignment with the fixture apertures, cylindrical bushings rotatably mounted in the sideframe apertures and having off center internal apertures, pins rotatably mounted in the bushing internal apertures and having off center internal apertures, pins rotatably mounted in the bushing internal apertures and having an eccentric extension at their lower ends, whereby irrespective of misalignment of the sideframes, the pin extensions are alignable with and insertable in the fixture apertures, said bushings and pins being lockable in the resulting trammed positions and their eccentric e

Abstract: A railway vehicle truck in which the framing consists of sideframes resiliently supported at their ends on the axle bearings and a main frame supported on the sideframes by flat elastomeric pad devices inclined longitudinally of the truck and located at a substantially higher level than the levels of the neutral axes of the sideframe center portions and of the effective lateral reaction points of the resilient supports of the sideframes on the axles, the position and inclination of the pad devices being such that the horizontal component of the resultant force developed by each pad device on the respective sideframe lies along the neutral axis of the sideframe center portion whereby to place the center portion of the sideframe in tension rather than bending and thereby permit use of sideframes of extremely light construction, and separating lateral thrust means between the sideframes and main frame from the vertical springing function of the inclined pad devices to permit optimum placement of the lateral thru