W. Schlafhorst Ag & Company

Oerlikon Textile Gmbh & Co Kg

Saurer Spinning Solutions Gmbh & Co. Kg

Bert Schlömer

Heinz-Georg Wassenhoven

Hans Grecksch

Thomas Weide

Michael Spitzer

Brigitte Riede

Dirk Brakensiek

Detlef Schelter

A spinning rotor for use at high speeds in open-end spinning machines has a rotor cup having an annular wall portion defining a rotor opening, a bottom wall portion merging with the annular wall portion, and a mounting hub extending exteriorly from the bottom wall portion. A rotor shaft is affixed to the mounting hub coaxially with the rotor cup. The merger of the bottom and annular wall portions of the rotor cup defines a maximum exterior diameter of the rotor and an interior rotor groove. The annular wall portion, the bottom wall portion and the mounting hub are of different cross-sectional thicknesses with the cross-sectional thickness of the bottom wall portion increasing from the rotor groove to the mounting hub. The wall thickness is less than 1.2 mm in the area of the maximum exterior diameter of the rotor cup () and the rotor cup has an aerodynamic exterior contour free of edges for deterring turbulent boundary layer air flow thereabout and an interior contour for promoting fiber spinning into a yarn.

Spinning rotor for open-end spinning machines

A yarn withdrawal nozzle for an open-end rotor spinning arrangement, having an inlet funnel and a coaxially arranged structure in the inlet funnel, as well as notches arranged in a spaced-apart manner that are positioned in the traveling direction of a yarn downstream of the coaxially arranged structure. The coaxially arranged structure is comprised of circularly-shaped beads or grooves of different diameters.

Yarn withdrawal nozzle

Growing community of inventors

Heinsberg, Germany

Bert Schlömer