Abstract: An intermodal transport system designed for use in the hauling of semi-trailers by means of railway bogies. The system combines a turntable and spring-loaded chock design to enable the efficient loading and unloading of semi-trailers. A novel turntable design reduces bending stresses in transit while the combined chock reduces labor requirements during the loading and unloading processes since an automatic locking in place is achieved.

Abstract: Frozen lumps of coal in conventional hopper cars are loosened by lowering an assembly of vertically oriented probe elements into the car while simultaneously vibrating the assembly. The vibratory structure is mounted on a gantry arrangement which also supports a supplemental probe arrangement utilizing impact forces to loosen coal in hopper cars having interiors different from those of the cars operated on by the vibratory arrangement.

Abstract: A system for moving freight carriers including highway semi-trailers and receptacles such as demountable containers and merchandise racks in trains on railway tracks includes railway trucks, each slidably mounting a transversely centered fifth wheel support to permit its positioning at different locations longitudinally of the truck and swivelly mounting a pair of longitudinally disposed structures each including a pair of transversely spaced treadways for supporting semi-trailer highway wheels such that the highway wheels at the rear of one semi-trailer can be supported on one wheel supporting structure and the fifth wheel support can be positioned between the treadways of the other wheel supporting structure to support the front end of another semi-trailer, whereby a plurality of semi-trailer and railway trucks are linkable into a train with the front end of the leading semi-trailer supported on the fifth wheel support of a road-rail tractor.