Railway rolling stock – Special car bodies – Sleeping
Patent
1975-03-19
1978-02-28
Makay, Albert J.
Railway rolling stock
Special car bodies
Sleeping
14 695, 105368B, 182131, B65G 6700, B65J 110, E01D 1512, E04G 316
Patent
active
040761347
ABSTRACT:
Trailers are loaded on and unloaded from railroad flatcars by use of a system including tractors to pull the trailers, an end ramp at the end of the train, and a movable side ramp structure at the side of the train. The movable ramp structure has a ramp and a retractable bridge extending from the top of the ramp to the top of a flatcar in the train. In unloading, a tractor drives up the movable ramp and across the bridge to get onto the flatcar. Then the bridge is retracted, the tractor hitches onto one of the trailers, and pulls it along the joined beds of the flatcars and down the end ramp. The tractor then takes the trailer to a storage area, unhitches the trailer, and returns to the movable ramp structure to repeat the process. While the first tractor is pulling the trailer along the tops of the flatcars, the movable ramp structure moves to a position near the next trailer to be unloaded, and extends the bridge again. A second tractor then mounts the movable ramp and repeats the unloading process with the next trailer. Additional tractors can be used in the same way. This greatly speeds the unloading process, since the next tractor need not wait to go to work until the previous trailer has been unloaded. The loading operation is substantially the reverse of the unloading operation. The bridge of the ramp structure preferably includes power-operated telescoping arms and hinged plates forming a roadway. The arms can be positioned in four different arrangements to form roadways extending in four different directions, thus enabling the loading and unloading of tractors in any of the four directions.
REFERENCES:
patent: 2099288 (1937-11-01), Allen
patent: 2190708 (1940-02-01), Fowler
patent: 2449829 (1948-09-01), Agren
patent: 2786590 (1957-03-01), Edwards et al.
patent: 2963986 (1960-12-01), Dobson
patent: 2996206 (1961-08-01), McKee
patent: 3019917 (1962-02-01), Ajero
patent: 3074569 (1963-01-01), Ajero
patent: 3095591 (1963-07-01), Buck
patent: 3149583 (1964-09-01), Morrill
patent: 3370311 (1968-02-01), Demos
patent: 3576167 (1971-04-01), Macomber
Beltran Howard
Landow Consulting Associates, Inc.
Makay Albert J.
LandOfFree
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