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

Child Classifications

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• D01H 4/02 imparting twist by a fluid, e.g. air vortex
• D01H 4/04 imparting twist by contact of fibres with a running surface
• D01H 4/28 using electrostatic fields
• D01H 4/30 Arrangements for separating slivers into fibres; Orienting or straightening fibres
• D01H 4/38 Channels for feeding fibres to the yarn forming region
• D01H 4/40 Removing running yarn from the yarn forming region, e.g. using tubes
• D01H 4/42 Control of driving or stopping
• D01H 4/48 Piecing arrangements; Control therefor