Abstract: A nut includes a sheet metal U-shape housing which can be positioned on a threaded rod laterally so that the legs of the housing straddle the rod. A U-shape spring clip is provided having parallel legs with inwardly projecting thread forms on the legs adapted to mesh with the threads of the rod. The spring clip legs are insertable in two slots in one leg of the housing also to straddle the rod at right angles to the legs of the housing. The housing includes supports for the spring clip thread forms which hold them in engagement with the rod thread. Snap latches preclude ordinary removal of the clip as long as the rod is present.

Abstract: A shear stud assembly is formed at the construction site by assembling double-headed shear studs with a channel system which engages one-headed end of the shear studs. The shear stud assembly may be positioned in a slab, beam, or horizontal element around columns or vertical elements for reinforcement with the studs hanging downwardly from the channel system through the normally congested steel reinforcing. Several forms of channel system are disclosed, each of which permit the length of the assembly and the spacing of the studs to be adjusted to fit, and yet still remain within the design parameters, all without the use of skilled labor or special tools.

Abstract: In steel reinforced concrete structures, a hanging system uses an embeddment anchor with a head or washer positioned behind the second layer of reinforcing from the load being supported. An adjustable length tubular opening or shank extends from the head or washer to the form which forms the surface from which the load is to be supported. In the tubular embodiment, two sealed tube sections telescope with respect to each other for adjustment to the required distance and are held to the head or washer by a removable plastic threaded fastener. After the concrete is poured, the fastener is removed and a threaded stud such as a rod is threaded into the head or washer through the tube. The tube is then sealed. In another embodiment, an internally threaded sleeve is adjusted on a threaded shank to obtain the variable distance from the washer or head to the form.

Abstract: Extruded conductive metal stock has a number of grooves along one long side of the sectional configuration of the stock which extend almost to the other long side. The grooves form parallel fingers. The stock is transversely cut to form machining stock blocks and the fingers become square posts projecting from a bar. The stock blocks may be cut between the posts to form smaller blocks with fewer fingers or posts. The blocks are then loaded on a machining center pallet with the fingers facing radially outwardly. The pallet is indexed through the machining center to form the square in section fingers into round posts, using a center flush hollow mill. The diameter of the mill and the spacing of the fingers is selected to avoid secondary milling. The posts are axially drilled to form a barrel wall and one or more set screw holes are drilled and tapped in the wall. If a flat pad pressure connector is formed, the posts are cut to form the pad prior to machining, and the axial drilling is omitted.

Abstract: Elongated generally rectangular in-section conductive metal bar stock is formed by extrusion to form a post type electrical bus connector. The shorter dimension is approximately the diameter of the posts to be formed, while the longer dimension is approximately the height of the posts plus the thickness of the bus or bar from which the posts will project. The narrow end forming the bus has a triangular ridge. The bar stock is cut-to-length dictated by the number of posts to form blocks which are then loaded into specialized pallets of a machining center. The machining center is the type having at lest two pallets, one being loaded while the other is indexed with respect to the tool spindle. The machining center also includes an automatic tool changer. The machining center mills the posts with a hollow center flush mill, drills the hole in the posts and forms tapped holes followed by deburring. The bar stock may have extruded L-shape flats, one of which forms a pad for a compression type connector.

Abstract: A submersible bus type connector using hollow posts or flat pad posts is machined from conductive metal bar stock extrudate in a continuous machining line, to form the posts and the drilled and tapped holes for the conductor connection hardware before being cut-to-length to form a connector having the desired number of side-by-side posts all machined from one block. The process produces an improved and yet low cost connector.