GB720969A - - Google Patents
Abstract
Abstract 720,969. Footballs, &c. RASCH, J., [trading as REX-THERMOPLASTIC J. RASCH.]. May 26, 1953 [May 29, 1952], No. 14641/53. Class 132 (2). A football or the like comprises a shell of a plastic mixture composed of 50-60 per cent. polyvinychloride and 50-40 per cent. plasticizer and having an aperture closed by.a plug of the same composition and backed by an inflating valve part of which is made of the same composition. The ball may be marked to represent the conventional panelled leather casing. As shown in Fig. 3, the valve comprises an inwardly extending body 6 of the plastic having a flange 6a cemented to the inner surface of the ball around the aperture. The body 6 embraces a tube 7 of metal or hard plastic into which is threaded the spring-loaded flap valve 5. As shown in Fig. 4, the flange 6a carries a valve body 8 in a chamber 8a of which is accommodated a metal ball valve 9.
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