GB945666A - Pad for seating - Google Patents

Abstract

945,666. Resilient upholstery. HERMAN MILLER Inc. Sept. 28, 1962 [Oct. 2, 1961], No. 36915/62. Heading A4M. A seat pad is made by locating a layer of resilient foam material 4 between front and back cover sheets, and pressing and securing together the cover sheets along three edges to form an envleope and along three lines parallel and adjacent to the fourth edge to form two separate tubular sections 24, 25 each having a subsidiary section of foam trapped within it between two of the lines, the outer section 25 being subsequently folded back on the other section 24 and secured. A seat pad comprises a flexible and durable envelope of sheet material 1, 2, 3 filled with foam material 4, the two end edges 18, 18a each being formed with a pair of ridges 24, 25 having the same thickness as the pad and which are separated from the main part of the pad by strips 20 where the inner faces of the envelope are held together, and the outer ridge 25 being folded back and secured over the inner ridge 24. The envelope comprises top and bottom layers 1, 2 of fabric reinforced vinyl and fabric reinforced plastic layer 3, the upper and lower layers being heat sealed along band lines 5, 20, 21, 22 and the lower corners 2, 3 being perforated to permit breathing of the foam 4. A reinforcing strip 29, e.g. of fibreboard, longitudinally flexible but resistant to lateral buckling, is incorporated between the folded ridges 24, 25 at one edge 18a prior to their being stitched together. The side margins comprise heat sealed layers 1, 2, 3 which form a wide flange 30 which incorporates a rib 31a with a foam core. Metal reinforced holes 34 are included at the corners of the pad and along its lateral edges which may incorporate metal reinforcing rods. The edge flange 30 may be clamped between seat frame halves 40, 40a with the rib 31a preventing its inadvertent removal from the clamped frame 41.