Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers Piecing arrangements therefor Covering endless core threads with fibres by open-end spinning techniques

DTEXTILES PAPER D01Threads, fibers D01HSPINNING OR TWISTING

D01H4/00Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers Piecing arrangements therefor Covering endless core threads with fibres by open-end spinning techniques

D01H4/02imparting twist by a fluid D01H4/04imparting twist by contact of fibres with a running surface D01H4/06co-operating with suction means D01H4/08Rotor spinning D01H4/10Rotors D01H4/12Rotor bearings Arrangements for driving or stopping D01H4/14Rotor driven by an electric motor D01H4/16Friction spinning, i.e. the running surface being provided by a pair of closely spaced friction drums D01H4/18Friction drums D01H4/20Drum bearings Arrangements for driving or stopping D01H4/22Cleaning of running surfaces D01H4/24in rotor spinning D01H4/26in friction spinning D01H4/28using electrostatic fields D01H4/30Arrangements for separating slivers into fibres Orienting or straightening fibres D01H4/32using opening rollers D01H4/34using air-jet streams D01H4/36with means for taking away impurities D01H4/38Channels for feeding fibres to the yarn forming region D01H4/40Removing running yarn from the yarn forming region D01H4/42Control of driving or stopping D01H4/44in rotor spinning D01H4/46in friction spinning D01H4/48Piecing arrangements Control therefor D01H4/50for rotor spinning D01H4/52for friction spinning