Abstract: 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. The drive device is supported on a side surface of the movable girder substantially within a thickness of the movable girder.
Abstract: 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 eliminating the need for expensive expansion joints at the switch. In a preferred embodiment, interlocking point shoes are also employed so as to hold the butt ends in vertical and horizontal register and transmit a signal to the trailing side rail of the impending approach of a load from the approach side rail, thereby reducing batter on the trailing side rail.
January 30, 1984
Date of Patent:
August 13, 1985
Canadian Patents & Development Limited
Lawrence A. J. van Eyken, Semion Perlin