Abstract: A movable, adjustable carrier assembly suitable for transporting a tire through a tire retreading plant along a conveyor track at different heights. The adjustable carrier assembly includes a main bar and a support bar. The support bar self-lockingly engages one of a plurality of notches or slots in the main bar. By reason of the multiplicity of notches, the height of the support bar, and accordingly the height of the tire it is transporting, can be adjusted, thus permitting a tire to be transported throughout a tire retreading plant on a single adjustable carrier, the height of the tire being adjusted as needed at the various operational stations. Also, the same adjustable carrier can be adjusted to accommodate tires of different sizes.

Abstract: A retread curing ring assembly that includes a conical frustum seat insertable within an opening of a tire carcass to be cured. The retread curing ring captures the edge portions of an elastomeric envelope draped over the tire carcass and a tread strip between the conical seat and the inner edge of the circumferential bead formed along the interior edge of the sidewalls of the tire carcass. A plurality of clamping assemblies are circumferentially disposed around a circular body member to which the conical seat is attached. Each clamping assembly has a clamping arm movable between an open and closed position. When the curing ring is positioned within the tire carcass, the clamping arms are moved to their closed positions, thereby drawing the curing ring further within the tire carcass to form a seal between the inner edge of the circumferential bead and the conical seat.