Fibre loosening device for a spinning unit of spinning machine

An improved fibre separating device for a spinning unit of a spinning machine including a fibre separating roller having functional contact lines arranged along at least one helix on said roller, fiber sliver condensing means and feed roller means operatively mounted in said device for coaction with said fiber separating roller, said condensing means having a slip surface forming an outlet which is biased against said feed roller means, said feed roller means feeding fiber slivers jointly with said condensing means onto the surface of said fibre separating roller;

• the improvement comprising, said fiber separating roller having a grip line, said slip surface being operatively disposed behind the grip line in the direction of the fibre sliver motion, said condensing means being equipped with dividing means on said slip surface for dividing the sliver into discrete fibre sections having widths which are not an integer multiple of the lead width S of the helix along which the functional contact lines of the fibre separating roller are arranged.