A steel stud member (10) for use in supporting structures and having reduced thickness as compared with conventional studs, and having a web (12) having side edges, flanges (14) and (16) on the side edges, formed at angles to the web, the web and the flanges enclosing inside surfaces, and having outside surfaces for mounting structure, and plurality of narrow indented longitudinal ribs (20) formed in the flanges, and in the web, indented inwardly from the outside to the inside of the flanges, providing greater load bearing capacity for a given gauge of steel. Also disclosed is a method of making such a steel member.
E04C 3/09 - JoistsGirders, trusses, or truss-like structures, e.g. prefabricatedLintelsTransoms of metal with apertured web, e.g. with a web consisting of bar-like componentsHoneycomb girders at least partly of bent or otherwise deformed strip- or sheet-like material
B21D 13/10 - Corrugating sheet metal, rods or profiles, or bending sheet metal, rods or profiles into wave form into a peculiar profiling shape
B21D 19/00 - Flanging or other edge treatment, e.g. of tubes
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 on the sheet metal. A further rotary drive system (50,52) assists to drive the die assembly, along the linear path. Followers (46) on the die assembly , engage guide ramps (42, 44) at just before and just after closing to maintain the linear speed of the die assembly and match it with the linear speed of the sheet metal. Also disclosed is a method of forming moving sheet metal by such apparatus.
A composite steel joist member made up of two steel joists each 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, with the joists being joined together back to back with their openings in registration. Also disclosed is a rim member for supporting the composite joists to form a floor structure .
E04C 3/08 - JoistsGirders, trusses, or truss-like structures, e.g. prefabricatedLintelsTransoms of metal with apertured web, e.g. with a web consisting of bar-like componentsHoneycomb girders
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.
B21D 5/08 - Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
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