|5193767||Girder type switch track|
A switch track apparatus for a girder type track comprises a movable girder composed of at least one girder portion shiftable between a plurality of positions on a fixed supporting member and of at least one drive device for driving the movable girder. Th...
|4534527||All weather switch for railroads|
An improved railroad stub switch is described in which the axial rail tension or compression forces due to temperature fluctuations are transmitted through the switch by means of radius arms connected to both the switch and fixed rails, thereby eliminatin...