Arrangement for open-end rotor spinning

Open-end rotor spinning apparatus, comprising:

• spinning rotor means for spinning yarn arranged on an axis;
• a fiber receiving surface in said spinning rotor means which extends circumferentially around said spinning rotor axis;
• housing means for housing said spinning rotor means, said housing means being connected to a vacuum source;
• fiber feeding duct means for feeding fibers to said spinning rotor means, said fiber feeding duct means including a mouth area leading into said spinning rotor means where fibers exit said fiber feeding duct means as viewed in the direction of the mouth area centerline, said mouth area exhibiting a circumferential cross-sectional width in said circumferential direction of said fiber receiving surface and including an axial cross-sectional width in said axial direction of said spinning rotor means, said circumferential width being greater than said axial width;
• wherein said housing means includes a projection projecting into an open area of said spinning rotor means and forming a gap between said spinning rotor means and said projection, said fiber feeding duct means including a conveying air flow therethrough for conveying fibers, said gap serving as an overflow gap for said conveying air;
• and
• wherein said spinning rotor means fiber receiving surface includes an open edge adjacent said gap, said fiber feeding duct means mouth having a circumferential wall closest to said open edge and being spaced approximately 1 mm from said spinning rotor means open edge.