INTERMEDIATE SEPARATE RAIL FASTENING Russian patent published in 2000 - IPC

FIELD: railway transport; permanent way; reinforced concrete ties and fastenings. SUBSTANCE: proposed rail fastening has rail baseplate with ribs, hook bolts, clamp unit and flexible fishplates. Clamp unit has rigid clamp, washer and screw with groove on body and lockring installed in groove at a distance from screw head exceeding clamp thickness. Threaded hole with bath is made in rail baseplate in zone of rib. Side wall of clamp from rail side is provided with oblique hole whose axis is orientated to bath. This invention makes it possible to increase capacity at carrying out lubrication of clamp bolt thread, replacement of defective rails and at assembling rail skeletons. EFFECT: increased capacity. 1 cl, 2 dwg