The Goodyear & Tire Rubber Company

Arthur W Beres

Helmut Dernbach

Richard A Raymond

Joseph P Verderico

Richard A Raymondi

A tire mold having an upper half, a lower half, and a hinged segmented center ring mounted on the lower half. The center ring has an upper register between the ring and the upper mold half and a lower register between the center ring and the lower mold half to support the center ring during molding. The lower register is provided by engagement of an inclined surface on the center ring with a lower register surface on a ring flange positioned between the hinge axis of each center ring segment and the inclined surface of the segment. The hinge axis is positioned below a lower split plane between the lower mold half and center ring. The height of the ring flange and the inclination of the lower register surface is selected to provide for swinging movement of the center ring segments with the least interference between the center ring and the tire tread during opening of the mold and to provide the maximum support of the center ring segments during molding of a tire.

Tire mold

A pair of arms having cable guides are connected for movement together and apart and include a torsion spring for urging the arms apart to maintain tension in a flexible cable carried by the cable guides. The cable is connected to a radially and axially movable segment of a segmental mold. The cable extends from the movable segment into a steam chamber and then through the cover of an opening in the wall of the steam chamber. At least one of the arms is mounted for hinged movement relative to the other arm on the cover so that the arms in a retracted position can be moved through the opening when the cover is removed.

Cable take-up for tire vulcanizer

A tire mold having two 'half' molds each including a side wall and a tread molding portion and a center ring having a tread molding portion for molding one third or less of the total width of the tire tread. The center ring is divided into eight sections each hinged to one of the half molds to swing open and outward of interfering portions of the tread pattern, being opened solely by the movement of the tire as it is lifted from the mold. No auxiliary mechanism for driving the sections is used or needed, and the mold is opened and closed in the same manner as the usual two piece tire mold. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.

Growing community of inventors

Akron, OH, United States of America

Arthur W Beres