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US 6,189,308 B1Granted
Method of and apparatus for producing a yarn on a ring-spinning machine
AssigneeZinser Textilmaschinen GmbH
InventorsFriedrich Dinkelmann, Andreas Olbrich
Life of this patent
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Abstract
A yarn is produced by condensing and compacting the roving after its passage through a drafting frame by suction rollers or suction belts and then twisting and winding up the yarn without the formation of a thread balloon on a ring spinning station with a balloon-limiting finger or crown.
Claims14
A method of producing yarn, comprising the steps of:
- drafting roving in a drafting frame to produce a drafted roving;
- thereafter compacting the drafted roving in a condensing device to obtain a compacted roving;
- and
- ring-spinning the compacted roving to twist the compacted roving while minimizing thread-balloon formation and to collect the compacted roving into a yarn body.
1 more element
A spinning machine for producing yarn, comprising:
- a drafting frame for drafting roving to produce drafted roving at an outlet pair of drafting rollers of said drafting frame;
- a condensing device downstream of each of said outlet pair of rollers for compacting said roving to compacted roving;
- a ring-spinning station receiving at least one of said compacted rovings for twisting thereof to form a yarn and for collecting yarn in a yarn body;
- and
- means at said station for minimizing thread-balloon formation in the twisting of said compacted rovings.
2 more elements
Dependencies are inferred from the claim text.