Abstract: A spacer for use in locking two cages into an integral unit of reinforcement and spacing the reinforcement from the surface of the form used in making large concrete products such as box sections, pipes, culverts and manholes. The spacer provides for precise placement of the reinforcement cages without the necessity of welding or the use of ties to retain the spacer in place. The spacer uses an eye configuration for spacing a torsion lock that provides for both ease of installation and positive locking of the spacer onto the cages.

Abstract: A spacer for attachment to the wires of a reinforcement cage that must be held away from the surfaces of a concrete form or wall used in producing concrete products, such as concrete pipe. The cage spacer is formed of a continuous piece of round spring-steel wire and has a closed loop formed at one end that hooks on a wire of the reinforcement cage. The closed loop connects two parallel spaced-apart legs that provide a spacing nose, the legs terminating at the other end of the spacer in an S-shaped hook that snaps over another of the wires of the cage. In the preferred embodiment, one lower leg is wrapped over and around the other leg to provide additional stability to the spacer.