Abstract: A rotary forming apparatus of the type having a pair of central rotors, and one or more die carriers swingably mounted on the rotors, for repeatedly forming a sheet metal work piece moving along a linear path, rotor bearing supports for supporting the rotors at least at one end thereof, die carrier guides on the die carriers at an end thereof adjacent to the rotor bearing supports, and, at least two cam plates adjacent to each the rotor bearing support, for guiding the die carriers guides.

Abstract: An eccentric drive rotary stamping apparatus for forming moving sheet metal and having a die assembly (12) (14) (16) (18) moveable forward and backward along a linear path, with upper and lower dies (12) (16) on respective sides of the sheet metal (M), the dies being closeable on the sheet metal for forming, and, an eccentric rotary drive crank system (22, 24) coupled to the die assembly, and operable to move the die assembly forward and backward along the linear path, and being further operable to close the dies the sheet metal. Also disclosed is a method of forming moving sheet metal by such apparatus.

Abstract: A steel joist member for use in supporting floor structures giving great strength and convenience and improved acoustical performance having a web defining side edges and an axis, a flange on at least one side edge, openings through said web at spaced intervals therealong, having rounded ends and parallel linear sides, portions of said web displaced from said opening remaining attached integrally to the web by bend lines formed on the linear sides of the opening along axes parallel to the web axis, and forming reinforcing channels alongside the opposite sides of the opening. Also disclosed is a composite joist member made up of two such members joined together back to back with their openings in registration creating an H shape or an I shape. Also disclosed is a rim member for supporting the composite joists to form a floor structure. Also disclosed is a method of making such a floor joist member.

Abstract: A steel member (10,40,70,100) for use in supporting structures and having reduced heat transfer characteristics as compared with solid web studs, and having a web (12,42,72,102) defining side edges and an axis, a flange (14,44,74,104) on at least one side edge, openings (18,46,76,112) through said web (12,42,72,102) at spaced intervals therealong, of predetermined size and profile, at least a side portion of said web (12,42,72,102) removed from said opening (18,46,76,112) remaining attached integrally to said web (12,42,72,102), by bend lines being formed along axes parallel to said web axis. Also disclosed is a composite member (130) made up of two such members (132) joined together. Also disclosed is a method of making such a member (10,40,70,100,130,132).

Abstract: A variable width roll forming apparatus forms a web and includes a first side plate extending substantially an entire length of the roll forming apparatus and a second side plate extending substantially an entire length of the roll forming apparatus, the first side plate and the second side plate being oriented substantially equidistant from one another. A plurality of roller die assemblies are disposed in apertures formed in the first side plate and the second side plate. An adjusting apparatus is utilized to selectively change a separation width between predetermined roller die assemblies in the first side plate and the second side plate, wherein the roll forming apparatus defines at least two differing widths between roller die assemblies disposed in the first side plate and the second side plate while maintaining the substantially equidistant spacing between the first side plate and the second side plate.