Abstract: A collapsible border assembly (1) for a picture, clip-frame, mirror, glass pane or other object (2), comprises a plurality of corner pieces (3), adapted for detachable engagement with corners of the object (2), and a number of elastic elements (4,5) interconnecting adjacent ones of the corner pieces (3). In use, the elastic elements (4,5) extend under tension between the corner pieces (3), around the periphery of the object (2), to thereby provide a border for the object (2) of frame-like appearance. Such border assemblies (1) may be stacked one above the other to provide a stepped frame appearance.

Abstract: The device comprises frame apparatus that is usable to maintain a poster 7 or other area of sheet material in a substantially taut condition by gently stretching the same. FIGS. 1 and 2 illustrates an embodiment in which the canvas 7 or the like is stretched by helical compression springs 4 in only one direction whereas FIGS. 3 to 6 illustrates an embodiment in which said canvas 7 or the like is stretched by springs 4 and 11 in two coplanar and relatively perpendicular directions. The use of the invention will allow paper and other sheet materials to be displayed in such a way that any small changes in dimensions due to ageing or changes in ambient conditions are automatically compensated for by expansion or contraction of the frame apparatus.