RAIL FASTENING ON METALLIC SLEEPER Russian patent published in 1995 - IPC

FIELD: railroad transport. SUBSTANCE: the metallic sleeper has the longitudinal groove 3 on its upper surface 2. The backings 6, having rectangular openings 7 and lengthwise ribs 8, are welded to the upper surface of the sleeper. The bolts 9 with the rectangular head 10 are inserted into the openings 7 of the backings 6 with possibility of their turning off until the head of the bolt rests upon a vertical wall of the lengthwise groove. Each clamp 11 has a pair of protrusions with different thickness, arranged in its upper and lower parts, for adjusting a width of the track by selective placement of respective protrusions between the rim of the backing 6 and a lateral face of a flange of the rail 12 with insulation or without the insulation between them. EFFECT: enhanced structure of fastening of rail. 1 cl, 6 dwg