Abstract An apparatus for driving a spindle for effecting false twisting of yarns in which a drive roller frictionally contacts a spinner to rotate it with high speed. Said spinner loosely fits in the grooves formed in the ends of a fixed magnet. The portions of the spinner loosely fit in grooves of a fixed magnet having a polarity the same as the polarity of corresponding grooves of the fixed magnet respectively whereby due to repulsion produced between the polarities, said spinner is urged to abut said drive roller and also its rocking motion is avoided. In front of respective poles of said fixed magnet, a metal plate of high permeability is provided with an airgap therebetween to increase magnetic flux density of said polarity portions.
An apparatus for driving spindle for effecting false twist of yarns as claimed in claim 1, characterized in that said spinner provides at opposite ends thereof cylindrical magnets thereon, one pole of which is on the outer face of the spinner and the other pole is on the inner face of the spinner, said poles having contrary polarity to each other.
Claim 2
Dependent Claim
44 words
An apparatus for driving spindle for effecting false twist of yarns as claimed in claim 1, characterized in that each groove on the opposite ends of said fixed magnet has a thin film of nonmagnetic metal or nonmetal material covering on the groove respectively.
Claim 3
Dependent Claim
41 words
An apparatus for driving spindle for effecting false twist of yarns as claimed in claim 1, characterized in that a confronting plate of high permeability metal is provided to face the poles of said fixed magnet with a small gap therebetween.
Claim 4
Independent Claim
124 words
An apparatus for driving a spindle for effecting false twist of yarns comprising a drive roller affixed to a spindle, a cylindrical spinner 8 mounting spaced cylindrical magnets 9 having poles adjacent its upper and lower ends, and fixed magnets 7a, 7b having each pole at their upper and lower face respectively and having a groove at their sides, said spinner being arranged so that its midportion is in rolling contact with said drive roller, said cylindrical magnets 9 being inserted with a loose fit in the groove of the fixed magnets so that the respective pole of said cylindrical magnets is adjacent the pole of the corresponding fixed magnet 7a, 7b and the polarity of such poles is identical to each other respectively.