Apparatus for producing pneumatic tires

Abstract From the Canadian patent

A cavity having the shape of the tire to be produced is defined by a mold comprising an upper element a lower element and a core element which are fittable to and releasable from one another. The core mold element comprises three divided segments, i.e. a segment for forming the inner surface of the tire tread and a pair, of segments for forming the inner surfaces of the tire sidewalls including tire beads. The core mold element has two pairs of nipping portions for holding the opposite ends of tire cords placed on the tread inner surface forming segment. The nipping portions in each pair are movable toward or away from each other. The tire cords nipped at their opposite ends by the core …