Manufacture of a tyre reinforcement using two half-carcasses

摘要

Production of a half reinforcement of a tyre carcass from a single strand (23) round a bead wire (8) consists of: (a) holding the bead wire in a predetermined position; (b) positioning a ring (14) a predetermined distance from the wire and approximately coaxial, with the planes of the two being parallel, the ring having half the number of hooks (15) as the number of strand loops contained in the required tyre; (c) hitching the strand onto the hooks with the aid of a means to place the strand in relation to a guide, form a loop of which two strands run towards the wire and the turnaround, each strand rejoining the adjacent hook after turning around the wire; (d) positioning a tyre cavity shaped former on the opposite side of the bead wire to the ring so that the bead wire is in the correct relative lateral position; and (e) removing the loops from the hooks and transferring to the support. Production of the machine is also claimed.