Method of making a resilient double C-shaped clip for securing a rail on a support and a clip made by the use of this method

The method of making a clip for securing a rail on a support, which comprises the steps of:

• (a) bending a length of bar material into a U-shaped configuration;
• (b) bending the U-shaped configuration of step (a) transversely of the plane of such configuration to define a generally C-shaped clip in which the free ends of the C-shape are laterally offset, in the plane of the C-shape, from a predetermined final disposition thereof;
• (c) subjecting the C-shaped clip to hardening and heat treatment;
• (d) fixedly holding one end of the C-shaped clip while exerting a first force against the other end of the clip in a direction and of such magnitude as to effect a continuous movement of said other end and produce a permanent deformation of said ends toward said final disposition thereof, and then releasing said force to allow said ends of the clip to spring back to that permanently deformed position effected by said first force;
• and
• (e) repeating step (d) at least once with an increased force to effect further permanent deformation of said ends to said final disposition thereof.