Mobile trackway

Details Mobile trackway Mobile trackway

1975-01-24

1976-02-24

Blunk, Evon C.

Railways

Traveling track

37 8, 61 42, 61 84, 105413, 198188, 214 41R, E21D 912, B61B 1300, B65G 6708, E02F 700

Patent

active

039397777

ABSTRACT:
A mobile trackway comprises a plurality of interconnected carriages adapted for rolling on an existing trackway, and having mounted on upper surfaces thereof two side-by-side trackways. Ramp cars (which form part of the mobile trackway) and switching sections on the carriages permit load-transporting cars to be moved to either of the two trackways from the existing trackway. When used in conjunction with tunneling machinery, a string of muck cars is positioned on one of the trackways and may be conveyor loaded while previously loaded cars are removed from, and empty cars are delivered to, the other trackway. The carriages are of hollow shell construction and are adapted for carrying ballast, for example excavated rock, scrap iron or concrete, to prevent being tipped over by any arrangement of loaded muck cars thereupon. No other stabilization means, such as outriggers or supporting members contacting the tunnel, is required. Recessed carriage wheels allow a low center of gravity and maximum ballasting capacity with minimum use of tunnel space. The mobile trackway is adapted for being towed by a tunneling machine so as to move therewith, rail sections being added to the tunnel trackway in front of the advancing mobile trackway which rides thereupon.

REFERENCES:
patent: 650927 (1900-06-01), Crosby
patent: 955398 (1910-04-01), Harris
patent: 1762074 (1930-06-01), Paisley
patent: 2796969 (1957-06-01), Russell
patent: 2796999 (1957-06-01), Russell
patent: 2906212 (1959-09-01), Hayes
patent: 2907481 (1959-10-01), Russell
patent: 3138327 (1964-06-01), Jacobs
patent: 3365895 (1968-01-01), Jacobs
patent: 3626855 (1971-12-01), Fogelstrom
patent: 3678694 (1972-07-01), Haspert

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