| 摘要 |
989,976. Belt gearing. J. H. FENNER & CO. Ltd. Nov. 27, 1963 [Nov. 30, 1962], No. 45306/62. Heading F2Q. [Also in Division B5] A method of joining the ends of a conveyer belt having an elastomer impregnated multiple ply textile fabric core, wherein the plies are held together by binder threads 3, comprises separating adjacent plies at the belt ends by severing the binder threads, removing portions of the separated plies to form complementary stepped surfaces on the two ends, Fig. 6, applying an elastomeric material to the complementary surface and to the severed ends of the binder threads, engaging the complementary surfaces, and fusing them together. The binder threads may be severed by cutting or by tearing the plies apart, and the elastomeric material may be applied to the joint surfaces as a paste or in sheet form, the fusion of the joint being effected by heat and pressure. The core may be loosely woven, as described in Specification 770,524, and stabilized by impregnation with an elastomer such as p.v.c. The warp threads 1 are of high tenacity filamentary yarn and the binder threads 3 are of staple fibre yarn mixed with a small proportion of high tenacity filament yarn. |
