RAILWAY CAR TRUCK

摘要

A railway car truck having a pair of side frames and a bolster and a transom extending transversely between the side frames. A respective rocker seat is rigidly an d permanently attached to each end of the transom and is pivotally supported on a rocker bar that i s supported by the tension member of a sideframe. The pivotal connection between the rocker sea t and the rocker bar disposes the transom perpendicular to the side frame and provides pivota l movement of the side frame with respect to the transom. The railway car truck is assembled b y inserting the ends of the bolster and transom into the window of a side frame, and then inserti ng the rocker bar through a passageway in the side frame to a position under the rocker seat a nd on the bottom tension member of the side frame. Springs are then inserted between the transom and the bolster such that the bolster is resiliently supported on the side frame.