Abstract: A method of making a tapered wedge for use in gripping a multi-ply rope or cable, especially concrete-reinforcing tendons, wherein the tapered wedge is circumferentially divided into a plurality of parts surrounding an axial aperture for the rope or cable. Each of these parts is deformed, for at least a part of its axial length, by pressing only its circumferential side edges inwardly toward the axis of the aperture so as to displace its interior surface adjacent these edges inwardly as well as to displace exterior surface regions inwardly.

Abstract: A conical wedge for use in gripping a multiply rope or cable, especially concrete-reinforcing tendone, is circumferentially divided into a plurality of complementary parts each of which has, for at least part of its axial length, a deformation produced by pressing its circumferential edges towards its central axial plane so as to displace its interior surface adjacent said edges inwardly thereby increasing contact with the wires of the tendon. Preferably the region of deformation is confined to the narrow axial end of the wedge.

Abstract: For connecting together two wires which are to be placed under tension in series connection, a connector has a rigid body pierced by two substantially parallel bores. The wires are passed through the bores and anchored against the tension at opposite ends of the body by suitable anchoring means. The lengths which are to be tensioned extend through the bores. Where a wire has ruptured under tension, the broken ends can be respectively connected to two such connectors, which are themselves joined by a supplementary length of wire. Tension can then be re-applied.