GB1058655A - Improvements in mosaic panelling - Google Patents

Abstract

1,058,655. Moulds for casting concrete. P. REYNTIENS, and D. KIRBY. July 20, 1965 [Jan. 27, 1965], No. 3602/65. Heading B5A. [Also in Divisions B6 and E1] A translucent mosaic panel comprises a substantially two-dimensioned [flat] reinforced, loadbearing, unitary framework of intersecting reinforced concrete beams and, on one surface of the framework, a mosaic of pieces of stained glass or other translucent material set in a matrix layer of epoxy resin which adheres to the concrete framework. The layer of epoxy resin may be reinforced with glass fibre or other material, e.g. glass fibre rovings that are connected to the reinforcement of the concrete framework by threading rings of glass fibre on to the reinforcement such that they project from the surface of the concrete framework into the adjacent layer of epoxy resin. The glass fibre rovings can then be reeved through the projecting portions of the rings before the epoxy resin layer is cast. The epoxy resin may contain fine and coarse sand, quartz flour, and a block colouring material. In making the panel, a number of formwork islands are placed in the bottom of a mould, metal reinforcement is positioned within the mould between the islands, concrete is poured into the mould up to the height of the islands, the concrete is allowed to set to form a unitary, reinforced, load bearing concrete framework, pieces of stained glass or other translucent material are placed on the islands to form a mosaic, a layer of epoxy resin is cast around the mosaic and on top of the framework and any exposed parts of the upper surfaces of the islands, the epoxy resin is allowed to set and the composite panel is separated from the mould and formwork islands. The exposed surface of the epoxy resin layer may be covered with slate dust while the resin is still tacky but in the mould. The formwork islands may be of a foamed plastics material such as foamed polystyrene. The mould may be a vibratory mould having a carrier which overlies the mould and which is provided with clamps to hold the formwork islands against the bottom of the mould and depending supports for supporting reinforcement for the concrete framework out of contact with the bottom of the mould, the carrier being removable from the mould. The mould may be pivotally connected about a horizontal axis along one edge to a fixed support, the pivotal connection being releasable. The bottom of the mould may be a false metal floor heated from beneath by hot water. A number of the panels may be mounted alongside one another to form a large stained glass window in, say, the wall of a church or public building.