Rail car door bottom guide rail

Abstract From the Canadian patent

A railroad car arranged to transport automobiles comprises a floor a, roof, a pair of spaced sidewalls, at least one door assembly having a lower end and guide means for guiding the door assembly to a position overlying a sidewall to enable loading and unloading of the rail car. A rail guides the lower end of the door assembly. The rail is positioned along the floor of the rail car. Means are attached to the door assembly and extend to a sliding engagement with the rail. The rail has uninterrupted sections and extends substantially entirely across the floor between the sidewalls and has two spaced depressible sections that can be pushed down by the tires of automobiles rolling thereover. …