Patent GB-479948-A (GB)
Title: Improved method and means for fastening wallboards or other panels to walls and other supports
IPC: E04F13/10
Filed: 1936-08-28
Abstract: 479,948. Walls; wallboards. TRIGGS, W. W. (Celotex Corporation) Aug. 28, 1936, No. 23619. [Classes 20 (iv) and 87 (i)] A wall comprises a support A, Fig. 1, a pair of adjoining panels 1, 2 positioned on the support, and a layer 8, Fig. 3, of bonding material which joins the panels together and is sufficiently elastic to provide sufficient shear displacement and stretching to permit considerable relative movement between the panels, the joint between the panels being arranged to minimize the appearance of separation of the edges of the panels due to shrinkage. The invention also comprises fastening one panel to a support by means of fastening means arranged along a margin of the panel, positioning a second panel beside the first panel so that a margin thereof overlaps the fastened margin of the first panel, with a layer of the said bonding material provided between the overlapping portions of the panels, and then applying pressure to the joint. The bonding material may be a rubber latex compound. As shown in Figs. 1 and 3, panels or wallboards 1, 2 are provided with stepped overlapping edges 3, 4, the overlapped edge 3 being nailed or otherwise fastened to the beam or stud A. The overlapping parts of the boards may be secured together while the bonding material, which is applied to one or both parts, is in a wet or dry condition. The adjacent edges of the boards are bevelled, as shown at 9, 10, so as to produce a joint of V-shape, the widening of which, when the boards shrink, is not particularly noticeable. If desired, the fastening nails 5 may be driven through both boards, and at an angle to the wall, but such nails have little holding effect on the upper board. In covering plaster walls, the overlapping flanges of the boards are secured together by the bonding material, and the lower flange only of each board is nailed to the wall. In a modification, the overlapping parts of the boards are provided, as shown in Fig. 5, with recessed portions which are filled with the bonding material so as to provide two enlargements 13, 14 thereon; alternatively, instead of providing the enlargement 14, a portion of the bonding material may extend rearwardly into the space between the edges of the boards. A cushioning layer of sponge rubber, felt, or fabric may be glued to the jointing face of one board prior to the application of the bonding material. The bevelled joint shown in Fig. 11 is formed by nailing the board 21 in position and securing the board 22 by the bonding layer 8 ; the grooved formation 23 of the board 22 may be dispensed with. Instead of arranging adjacent boards so that they overlap, they may be provided with abutting flanges 33, Fig. 13, overlapped by a strip 35 which is secured by a bonding layer 8. The flanges 33 are nailed to the support, and the outer face of the strip 35 may be convex. This arrangement may be modified by providing the strip 35 with a flat outer face and shaping the adjacent edges of the strip and boards so that a V-shaped groove is provided on each side of the strip. In a further modification, the flanges 4 of adjacent boards fit over, and are secured by a bonding layer 48 to, a strip 47 which is fastened to the wall, as shown in Fig. 16 ; alternatively, the flanges 4 are dispensed with, and the bevelled-edged boards are secured by a bonding layer to an underlying strip which is nailed to the wall. In both these cases, the bonding layer extends beyond the edges of the underlying strip. The board shown in Fig. 1 may have its outer face covered with veneer which extends over the bevelled shoulders of the board.