Bladder holder assembly for tire making machine

In an inner and outer bladder holder assembly for a tire making machine comprising an inner bladder bead ring and an outer bladder bead ring, a bladder spacing ring position between the inner and outer bladder bead rings, an inner bladder clamp ring positioned on the other side of the inner bladder bead ring, and an outer bladder clamp ring positioned on the other side of the outer bladder bead ring, the improvement comprising a plurality of detachable fasteners fastening all the said rings together into a unitary assembly, each fastener comprising a single fastener extending through all said rings and accessible for insertion and withdrawal from the outer bladder clamp ring, a second plurality of detachable fasteners fastening some, but not all of the rings together through holes therein into sub-assemblies, and dowel means positioning the outer bladder bead ring, the bladder spacing ring, the inner bladder bead ring and the inner bladder clamping ring only with respect to each other, those holes being counterbored so that the second plurality of detachable fasteners therein clear overlying rings, whereby the second plurality of detachable fasteners may be tightened to permit limited movement between adjoining rings prior to tightening of the fasteners extending through all rings.