A process for the preparation of a double c - shaped resilient clamp for fastening a railroad rail on a substrate and a terminal, which is produced by applying this method

摘要

A method of making a resilient double C-shaped clip for securing a rail on a support, wherein in advance of the heat treatment the ends adapted to cooperate with the support and with the foot of the rail are bent towards one another in the direction of the fastening force to such an extend that they are offset with respect with one another over a certain distance in relation to their position when the ready clip is free of load and wherein after the heat treatment the clip is subjected to a series of permanent deformations, each effected by imposing a permanent deformation force on one end of the clip while the other end is held in fixed position, such that upon a continued deformation there would be no increase or only a very small increase of the load, and the clip being relieved of load after each deformation.