Abstract:
A freight car classificaton system at a level classification yard is disclosed which may automatically classify and reclassify the cars to make up a new train. A freight car mover is installed along a receiving track and also along each of several classification tracks for pushing or retarding the cars to a predetermined speed. A group of freight car accelerator-retarders installed along the receiving track is adapted to accelerate or retard the cars at a predetermined speed. Groups of freight car accelerator-retarders installed along the classification tracks are also adapted to accelerate or retard the cars to a higher predetermined speed. An automatic decoupling unit is installed at a suitable position near the first group of accelerator-retarders along the receiving track so that any specific coupling between the cars may be automatically decoupled or disconnected as the cars move. The cars on the receiving track are sequentially pushed to a predetermined speed to the desired classification track and coupled to other freight cars at a predetermined speed. The classified cars on the classification tracks may then be automatically reclassified onto the receiving track to make up a new train.
Abstract:
Idle cars of a baggage handling system suitable for use in busy airports are stored on sidings in a storage area. Each siding has a retractable stop arranged to arrest the leading car on the siding and a plurality of powered drive wheels on a reciprocable frame, the drive wheels cooperating with a member on the car to drive the car. The member is of lesser length than the overall length of the car and the drive wheels are spaced at intervals equal to the overall length of a car such that the drive wheels are out of engagement with the members when the car or cars are arrested by the stop. To release a car from storage the stop is withdrawn and the frame shifted to engage the drive wheels with the car members. The first drive wheel provides a higher speed than the others to open a gap between the first and the following cars such that the stop may be returned to arresting position prior to arrival of the next car at that position.