An improved device for automatically lubricating tram axles and the like

摘要

177,982. Jones, A. J. M. March 19, 1921. Force-feed lubricators.-Oil is introduced into the wheel hubs of trams or the like by a pump operated solely by contact of the plunger E with the caps of passing wheels and constrained by links to move in a circular path while always remaining at right-angles to the direction of motion of the vehicle. The links are pivoted at D on the tank, and the pump-barrel B is pulled back into position by a spring J.