Stationary, slow speed and uni-directional lockout for differential action railroad car wheelsets

A railroad car wheelset has an axle with one wheel rigidly attached as in conventional railroad practice. This wheel is permitted to rotate by journal bearings. At the other wheel, the axle is provided with a smooth surface and a self-lubricating bearing is provided as a part of a hub on the axle. The axle is provided with a boss for preventing the independently rotating wheel from migrating laterally out of proper alignment. A bearing is located between this boss and the side of the wheel. A removable retainer plate is located on the other side of the independently rotating wheel. Adjacent the removable retainer plate is an electrical contactor. The bearings can be comprised of a lubricant coating permanently bonded to the bearing surface of the hub. Latch elements are pivotally secured to the other wheel and engagable with locking elements operatively secured to the axle. A second wheelset has an independently rotatable wheel locked to the axle automatically in one direction.