project a stream of air against the layers of tire components 34 at a position midway between the edges 44 and 46 of the drum 10 and in a direction ab as shown in fig2 then as the drum rotates streams from the other jets will impinge upon the layers 34 in directions ac ad ae af and ag at positions spaced further from the position x midway between the edges to eject air from between the layers of tire components 34 at the edges the resulting curtain of air under pressure provides stitching and ejection of air without contacting the layers of tire components 34 the stitching and ejection of air is applied to the full width of the layers of tire components 34 upon each revolution of the drum 10 and therefore the number of revolutions required for complete stitching does not depend upon movable rollers which require many revolutions to cover the width of the layers as shown in fig1 the nozzles 32 are mounted to provide streams of air under pressure in a radial direction through passages a b a c a d a e a f and a g however in the modification shown in fig6 where similar parts have been designated by the same numerals but with the addition of the prime mark the manifold 18 u2032 has nozzles 48 which are mounted on a drum face 50 wherein the direction of the nozzle passages a u2032 h a u2032 i a u2032 j a u2032 k a u2032.