| 摘要 |
1,208,587. Laminated rubber articles. GOODYEAR TIRE & RUBBER CO. 12 Dec., 1967 [16 Jan., 1967], No. 56415/67. Heading B5N. [Also in Divisions B2 and D1] A rubber or rubber-like article containing a textile reinforcing member comprising a plurality of continuous filamentary elements in the form of cords, e.g. of glass, nylon or polyester material, or of fabric formed of such cords arranged in parallel longitudinal relation and held together by spaced lateral warp threads, is produced by a process in which prior to incorporating the member into the article it is progressively flexed along its length under tension so that the flexibility of the member is greater after flexing then before flexing. Prior to flexing the member may have been dipped in an adhesive which bonds it to rubber, dried and hot stretched. After flexing the member may be embedded in uncured rubber applied by calendering, formed into a laminated article, e.g. a tire, and vulcanized. The flexing apparatus shown in Fig. 2 comprises two parallel frame members 10 that support idler rolls 11 and 12 mounted in bearings 14 secured to the bottom of frame members 10 and adapted to guide web 13. Extending between frame members 10 parallel to one another and perpendicular to the path of travel of the web are three stationary tubular supports 15 and two adjustable tubular supports 16 having secured thereto flexing bars 17 "L"-shaped in cross-section, which extend longitudinally along each support 15 and 16 from end to end and over which the web is flexed in passing. Supports 16 are mounted for rotary movement relative to slide blocks 20 and are biased to the desired position by means of coil tension springs. The desired angle of flexure of the web as it passes through the apparatus is adjusted by vertical adjustment of the tubular supports 16 carried at each end by slide blocks 20 received in vertical guides 21, by means of screw jacks 32 each comprising a threaded plunger 33, top plate 34 which engages slide block 20 and helical gear 35 threaded on plunger 33 and mounted for rotary movement, the teeth of the helical gear 35 engaging worm 36 mounted at the end of a motor-driven driveshaft. |
