Apparatus with endless screws for forming flat loops of textile yarn

Apparatus for forming flat loops of textile yarn and depositing them on a moving conveyor belt, comprising a conveyor belt, at least two endless screws, means for driving said endless screws, at least two members for supporting and guiding yarn loops, said support and guide members being disposed on either side of said endless screws outwardly thereof, two deviating rods, said deviating rods being disposed in a plane parallel to the axes of said endless screws and equidistant therefrom, said plane being perpendicular to a plane defined by said support and guide members and perpendicular to a surface of said conveyor belt, a driven rotating arm arranged to rotate and coil yarn around said endless screws, said support and guide members and said deviating rods, said support and guide members being configured to permit inverting the yarn loops between the ends of said endless screws and a zone of deposition of said loops on said conveyor belt surface, and means for inverting the yarn loops comprising a surface on said conveyor belt adapted to provide friction for driving the yarn and means for displacing said conveyor belt surface at a speed greater than the speed of displacement of said yarn loops on said support and guide members.