Truck bolster

Abstract From the Canadian patent

A railroad car truck bolster may be formed as a steel casting. That bolster may include , side bearing fitting access sockets located abreast of the side bearing seats. It may also include , substantially continuous internal cavities to either side of a cross-wise internal vertical web plate , mounted under the center plate bowl. The truck bolster may have large brake rod apertures that , have large radii of curvature and that may be bounded internally by a shear reinforcement at the , vertical plane of the truck mid-span centerline and another shear , reinforcement spaced laterally outboard of the mid-span vertical plane. The webs of the bolster may be substantially , imperforate …