Railroad track relaying train

A train for relaying railroad track in a relaying zone comprising:

• (a) cars for transporting ties and fixing means,
• (b) a sequence of working cars comprising at least a car for removing old rails and ties or track panels, a ballast excavating car, and track relaying car, each of said working cars carrying working instrumentalities and having at both ends bogies adapted to run on rails;
• (c) a coupling frame between each two consecutive working cars and connected by universal joints with adjacent ends of said cars, said coupling frames carrying no working instrumentalities,
• (d) at least one track-laying or caterpillar truck supporting each of said coupling frames and adapted to move on the ballast or cleared track bed, means for raising and lowering said coupling frame relative to the respective track and means for driving and steering said trucks, said ends of said working cars being supported by said coupling frame in its raised position to unload said bogie trucks adjacent to said ends and to carry them in a lifted position above said ballast or cleared track bed,
• (e) controllable hydraulic bumpers or buffers on opposite ends of said coupling frames for keeping the coupling frames in predetermined longitudinal relation to said working cars between which said coupling frames are disposed, and
• (f) guide members provided at the end of a working car adjacent a coupling frame and bearing on the adjacent end of the respective coupling frame for keeping the chassis of said car in the proper transverse parallel position in relation to the coupling frame.