Mold for making yarn tubes

Claim 1

A MOULD FOR THE MANUFACTURE OF A YARN TUBE OF THE TYPE HAVING A PAIR OF IMPERFORATE ANNULAR END RINGS AND A PERFORATE WALL WITH AN INNER AND OUTER FACE, SAID MOULD COMPRISING: AN INNER AND AN OUTER MOULD PART EACH HAVING A COMMON LONGITUDINAL AXIS AND MATING END WALLS MUTUALLY DEFINING A PARI OF ANNULAR CHANNELS EACH AT AN OPPOSITE END THEREOF; A PLURALITY OF PROJECTIONS ON ONE SAID PART, EACH HAVING SIDE WALLS AND HAVING A FACE CONTACTING THE OTHER PART AT PLACES WHERE FLUID OPENINGS ARE TO BE FORMED IN SAID TUBE WALL, SAID FACES ALL LYING IN A SURFACE CONCENTRIC WITH SAID AXIS AND WITH THE OUTER FACE OF SAID TUBE; A PLURALITY OF MATING WALLS ON SAID INNER AND OUTER MOULD PARTS, THE SIDE WALLS THEREOF WITH THE SIDE WALLS OF SAID PROJECTIONS, MUTUALLY DEFINING A PLURALITY OF ELONGATED CHANNELS EACH EXTENDING CONTINOUSLY FRO ONE SAID ANNULAR END CHANNEL TO THE OTHER TO FORM CONTINUOUS FLOW STREAMS THEREBETWEEN FOR THE PASSAGE OF MOLDABLE MATERIAL, AND THE SIDE WALLS OF SAID PROJECTIONS ALL LYING IN THE DIRECTION OF THE SIDE WALLS OF SAID CHANNELS AND IN THE DIRECTION OF THEIR RESPECTIVE FLOW STREAMS.