Abstract: A roofing panel for use on inclined roofing support structures wherein the panel is formed of sheet material and is configured in section from its higher to its lower end such as to define at its upper end a downwardly depending foot arranged in use to enable securement to the roof support structure at or adjacent its higher end and then an upwardly extending ridge lower than the foot and having in its side facing the lower end of the panel, a slot; the lower end of the panel including a downwardly directed ridge arranged in use to overly the ridge of the next succeeding lower panel and including a tongue directed towards the higher end of the panel and lying beneath the under surface of the panel and arranged in use to engage with the slot in the upwardly directed ridge of the next succeeding lower panel for positive location therewithin, whereby the panel in use lies over the downward depending securement foot of the next succeeding lower panel.

Abstract: A forming apparatus for shaping a workpiece made from malleable metal strip driven through the apparatus comprises a main frame on which are mounted driven bottom rollers for driving and supporting the workpiece through the apparatus and top rollers pressing the strip against the bottom rollers. The top rollers are mounted on side sub-frames which are traversible towards and away from the longitudinal center-line of the apparatus and which carry forming tools. The subframe may carry forming rollers mounted in cylindrical carriers which are themselves rotatably mounted end to end in support tubes extending parallel to said center-line and are rotationally adjustable independently of each other, for example to allow the amount of angular deformation of the strip to be adjusted without necessarily changing the forming tools. Bars provided to effect bending may be readily adjusted for size variation.