E - Fixed Constructions – 01 – B
Patent
E - Fixed Constructions
01
B
104/16
E01B 27/02 (2006.01) E01B 27/18 (2006.01)
Patent
CA 1123666
ABSTRACT. A method of re-levelling railway track of the kind having rails fastened to sleepers supported on a ballast bed is disclosed. The method comprises lifting the sleepers off the ballast bed and pneumatically placing ballast stones by an air stream in the gap formed between the underside of a lifted sleeper and the underlying ballast bed using a tool which is driven into the ballast bed adjacent a side face of the sleeper to a depth such that an outlet for the ballast stones propelled by the air stream is provided at the level of said gap. The tool used comprises a spade-like member having a channel along which the air stream and the ballast stones are fed into said gap, said member being disposed so that said channel extends generally downwardly with its mouth facing said sleeper side face and the length of the channel being greater than the depth of the channel. Preferably the length of the channel is such that with the lower end thereof aligned with said gap said channel extends upwardly to a position above the top side of the sleeper.
327974
British Railways Board
Smart & Biggar
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