Methods and devices for controlling the tension of yarn in a tufting machine

摘要

A tufting machine for forming tufted carpet having means for inserting loops of at least two different yarns into a backing material moving through the tufting machine and means for controlling the deviation of the ratio of different yarns projecting from a top surface of the backing material. It is contemplated that the tufting machine can be used to maintain the color of the tufted carpet at a desired color during the operation of the tufting machine.