Abstract: A reinforcing unit for aerated concrete components. At least two spaced apart welded reinforcing mats are made up of longitudinally extending main bars and transversely extending crossbars, the crossbars being welded at their intersections with the main bars. The two mats are spaced apart from each other by connector bars which are bent into a C-shape from weldable steel bars, each connector bar having a pair of opposed legs and a spacer portion connecting those legs. The connector bars have openings to allow the passage of lifting rods. A device for forming the connector bars includes a straightening device, a device for adding small flags with holes therethrough, a bending device and a cutting device for cutting the bent connector bars and then a welding device for welding the connector bars to the mats.

Abstract: The X-ray cassette consists of a substantially rigid lower section and a resilient cover which has a convex curvature relative to the inside of the cassette in its non-distorted state. The closure system is in the form of a snap-action closure system, consisting of a bar which is displaceable parallel to the front of the cassette in the lower section thereof and which is formed with beads or has cams rivetted or soldered onto it. When the cassette cover is pressed against the lower section of the cassette, these cams or beads engage in corresponding beads or cams on the end face of the cassette cover.