Method and devices for laying a thread on a substrate

摘要

In a method of applying a thread to a moving substrate, a thread is continuously dispensed to a pick-up point at the point of contact between two rotating wheels (2, 3) inclined towards each other and provided on their peripheries with fingers (7) which hook the thread and move it to one side or the other as they rotate, and then deposit the thread extended between said fingers 180° from the pick-up point. Long spaces between the fingers (7) on one wheel or the other make it possible to lay the thread longitudinally (8b) or in a long diagonal line instead of merely in a lateral zigzag pattern. The invention also relates to devices for carrying out said method.