Concrete insert

Claim 1

A concrete insert, free from hooks, for anchoring and supporting anchor nuts for retaining various brackets and fittings such as used in a metal framing system with the insert embedded in concrete for its full depth and for either part or all of its entire length, said insert comprising: an elongated metal channel member of uniform thickness having a flat back wall and side edges, the back wall extending for substantially the entire length of the insert, the uniform thickness of the channel member providing uniformity of load stress along the entire length of said channel member; a pair of side walls integrally connected to the side edges of the back wall and projecting forwardly an equal distance to the front face of the channel member and terminating in flanges projecting towards each other formed parallel to and spaced from the back wall, said flanges being formed with lips projecting inwardly towards said back wall for supporting a loaded anchor nut without exerting a spreading stress on the channel side walls; and said channel side walls being formed with two longitudinally extending half sections with the outer half sections being parallel to each other so that when the channel member is embedded in concrete with loaded anchor nuts supported therein no wedging stress is exerted on the concrete adjacent the open face of the channel, and with the inner half sections of the side walls flaring outwardly in the form of a wedge so as to anchor the channel member when embedded in concrete and so that any stress exerted on the concrete will be spaced inwardly from the front face of the channel member when the channel member is thus embedded with loaded anchor nuts supported therein.