Device for the automatic anchoring of the outer yarn end of balls in automatic balling machines

摘要

A winding mandrel for a ball winding machine has umbrella stretchers at its forward portion on which yarn is wound. The front end of the mandrel is provided with a plurality of radial channels open on frontal edged for receiving a yarn and retaining means movable with respect to the front end to occlude at least one of the radial channels to hold the yarn in the channel.