INTEGRAL PLATELESS BAILS FASTENINGS FOR REINFORCED CONCRETE UNDERRAIL BASE Russian patent published in 1998 - IPC

FIELD: railway transport; permanent way; members fastening rail to reinforced concrete base. SUBSTANCE: integral plateless fastening consists of insert 4 installed in widened part of through channel 2 in base for hook bolt 3, clamp for pressing rail to base, and adjusting washer to limit side displacement of rail and tied up by hook bolt 3 or adjusting-and-pressing member 7 formed by indicated washer and clamp made as integral unit. Base in zone of location of washer and clamp is provided with recess to accommodate adjusting washer and one of support parts of clamp or adjusting-and-pressing member 7. EFFECT: enhanced fastening of rails. 3 dwg