Abstract: A method for making an elasticised yarn includes feeding a roving made of a cotton-based natural fibre at a weight percentage of at least 50% and having a linear mass density between 0.1 Nm and 50 Nm, to a stretching unit, and extracting it from the stretching unit at a speed higher than the unwinding speed. The stretched roving and an elastic fibre are jointly pulled through an overlapping unit, forming a spool of the elasticised yarn. The elastic fibre includes a natural rubber containing more than 80% polyisoprene 1,4-cis. The elastic fibre also includes sulphur as a vulcanization agent; a vulcanization accelerator and a vulcanization activator; an anti-tacking agent; an antioxidant agent; and a stabilisation agent. The elastic fibre is obtained by longitudinally cutting a longitudinally cut flat yarn made of the natural rubber, to attain a linear mass density between 50 dtex and 1000 dtex.

Abstract: A method and a device for initiating the rewinding process after a yarn break in single stage pot spinning. In the process, a yarn detaching device (14) is introduced into a spinning centrifuge (3) rotating a high rpm, and places a cutting edge (16, 48) against the conically wound portion (32) of a spinning cake (15) deposited on the inner wall (26) of the spinning centrifuge (3). The yarn detaching device (14) has a yarn guide device, whose yarn guide contour (17, 43) covers the cutting edge (16, 48) of the yarn detaching device (14) such that in the course of the initiation of the rewinding process lower winding layers of the conically wound portion (32) are lifted on the rewinding tube (9) and in this way dependably prevents the winding of yarn around the yarn detaching device (14) during the rewinding process.

Abstract: A centrifugal spinning and winding machine (23) with a plurality of work stations (1) arranged in series. The work stations (1) comprise several autonomous centrifugal spinning units (2), an associated winding device (5), and an associated storage device (4) located between the centrifugal spinning units (2) and the winding device (5) and having at least one storage path (31) for holding spinning cops (16) and at least one waiting path (33) for holding empty bobbin tubes (11) for supply to the spinning units and the winding device.

Abstract: A machine for making a mixed yarn by combining two false-twist textured yarns is disclosed. The machine comprises drawing systems (3A, 3B; 8A, 8B) arranged on either side of the texturing area and mounted alternately on two separately controlled parallel, shafts, and heat treatment units (5A, 5B) located in the false twisting area and having a temperature controlled by two mutually separated systems. The false-twist spindles (7) are power spindles with a speed that may be varied to suit each kind of yarn. The machine comprises joining device (9) for interlacing two yarns from two different texturing positions, the device being arranged, when seen from the front, between the positions so that the two yarns (2A, 2B) follow identical paths before being joined.

Abstract: Novel fibers have been made from reactor grade isotactic poly-alpha-olefin wherein polypropylene is produced by single-site catalysis and has a melt flow rate of greater than zero to about 5,000, MWD in the range of about 1.0 to about 3.5.

Abstract: A pot-spinning machine is equipped with a rewinding tube mounted on each yarn guide and with a central, common shogging drive of the yarn guides at one side of the machine. After a yarn break or similar interruption in spinning, in order to be able to initiate the rewinding operation immediately at the affected spinning station while simultaneously continuing the spinning process unchanged at the neighboring spinning stations, the shogging motion of the yarn guide is separated from the motion of the rewinding tube supported on the yarn guide, so that the rewinding tube is then moved only at the forward indexing speed of the yarn guide which is relatively slow compared with the shogging speed and which does not affect the rewinding of yarn onto the rewinding tube.

Abstract: A pot spinning machine holds a yarn rewinding tube in ready position during the spinning operation for immediate movement to an operative rewinding position in the event of a yarn break so that the broken end of yarn is not lost by winding onto the yarn cake already formed in the spinning pot and the yarn cake may then be properly rewound. The yarn break is detected with the aid of a yarn sensor which then emits a signal for immediately moving the rewinding tube into the rewinding position and clamping the yarn end. The rewinding operation can begin, even in the absence of a loose end of the yarn, if the yarn has assumed the form of a chord-like yarn segment extending substantially in the circumferential direction against the inner face of the yarn cake deposited onto the inside wall of the pot, which can be grasped and utilized to initiate the rewinding operation.

Abstract: A PC strand is formed by twisting peripheral wires made of deformed PC steel wires around a core, and allowing rust inhibitive material of thermoplastic resin to permeate into voids defined among the core and peripheral wires by use of an extruder. Since at least one of the core and peripheral wires is made of a deformed PC steel wire having an uneven outer surface, the thermoplastic resin can smoothly permeate deep into the inside of the PC strand.

Abstract: A method for rewinding a spinning cake from a spinning pot of a pot spinning apparatus onto a rewinding body, preferably onto a tube as a yarn carrier, includes drawing a sliver to be spun in a drafting configuration, guiding the sliver in a pneumatic piecing aid, and depositing the sliver with a traversing yarn guide onto an inner wall surface of the rotating spinning pot as the spinning cake, while maintaining a requisite rotation for formation of a yarn. A yarn guide is moved toward the middle of the spinning cake in a last stroke being shorter than a next-to-last stroke of the yarn guide toward the middle of the spinning cake, once a predetermined size of the spinning cake is reached, before initiating rewinding of the spinning cake onto the rewinding body. A delivery of the sliver from the drafting configuration is stopped once a reversing point of the stroke is reached. The rewinding body is introduced into the spinning pot and the yarn is transferred onto the rewinding body.

Abstract: In the spinning unit of a centrifugal spinning machine the yarn conduct (4, 5) mounted between the revolving tube (2) and the yarn spreader (8) is designed so as to open on the side of the rewinding unit consisting of a winding drum (17) and a cartridge holder (18). The yarn conduct opens without displacement of the yarn (28) from its longitudinal axis. This allows to reduce the friction of the yarn (28) against the wall of the yarn conduct (4, 5) during the spinning process and to reduce the friction of the yarn (28) against the wall and the upper end of the spreader (8) during the rewinding process, as well as to bring the rewinding unit closer to the spinning unit.

Abstract: A centrifugal spinning apparatus, comprises a plurality of drawing mechanisms for simultaneously producing a plurality of fiber tows and a plurality of spinning units forming an assembly of such units operating in synchronism, each spinning unit being associated with a respective drawing mechanism and comprising a pair of centrifugal spinning pots associated with respective temporary storage bobbins. Each drawing mechanism alternately supplies two spinning pots. On changing pots, the yarn is severed and its end is picked up by a temporary storage bobbin. A carriage, displaceable along a guide, carries a yarn suction arm pivotally mounted about shaft, a joining device, a reserve yarn bobbin system, and a take-up bobbin. The carriage is moved opposite storage bobbins of the different spinning systems associated with the several drawing mechanisms.

Abstract: In the case of a spinning machine for the pneumatic false-twist spinning of staple fibers, it is provided that each spinning point is constructed as a double spinning point for subjecting two slivers to spinning which comprises devices for drafting which is common to both slivers, respective separate devices for pneumatic false-twisting and respective separate devices for winding the yarns onto intermediate packages, and that, in an automatic interconnection, a spooling machine is arranged which rewinds the yarns of the intermediate packages onto normal packages.

Abstract: Packages, particularly cross-wound packages are produced directly at a ring spinning frame. In a method and apparatus for making packages a rewinding device is provided for a group of spinning stations. The rewinding device comprises a fixed winding station and a gripping device movable along the group of spinning stations. The rewinding device is able to perform all the manipulations for starting up a spinning process with empty yarn carriers. It is also possible to change the full yarn carriers and mount the empty yarn carriers on a spinning frame, remove thread breaks and carry out spinning following a batch change. Spinning of the individual yarn carriers takes place individually, so that when replacing one yarn carrier, the other spinning stations continue to operate. This leads to a high production rate of the ring spinning frame and simultaneously reduces costs for rewinding compared with known systems.

Abstract: An apparatus for changing yarn carriers in a textile machine, particularly a ring spinning machine, funnel spinning machine or ring twisting machine, includes a revolver having an axis, a pair of spindles being disposed on the revolver symmetrically to the revolver axis and having axes, and the spindles of the pair being rotatable in mutual alternation between a spinning position and an unwinding or disposal position. According to one embodiment, the axes of the spindles of the pair are inclined relative to the revolver axis by an acute angle and diverge in a direction toward the free ends of the spindles. According to another embodiment, at least two pairs of spindles are disposed on the revolver for serving at least two adjacent spinning or twisting stations of the textile machine, and each two adjacent spindle axes are mutually parallel at a given spacing.

Abstract: A textile machine has a support carrying a number of yarn dispensing spindles. The machine includes an automatic winding device movable selectively to each of the spindles for rewinding yarn on each spindle. The winding device includes a yarn supply and elements which guide the yarn to the spindle to be rewound. In one embodiment, the winding device includes an articulated arm which removes the spindle from the support, brings it to the winding device for yarn to be rewound upon the spindle and returns the spindle to the support. In a second embodiment, an empty spindle is removed from the support by one arm and a second arm delivers a full spindle to the support. In a third embodiment, the automatic winding device moves to a spindle. Then a motor associated with the respective spindle operates at a different rewind speed and yarn is supplied to the spindle spinning at rewind speed to wind the yarn upon the spindle.

Abstract: A ring spinning and spooling frame includes spooling stations. A plurality of spindles are disposed in pairs on bearing plates. At least two of the pairs of the spindles are associated with one of the spooling stations. The bearing plates are movable in position between a ring spinning position and an unreeling swiveled position of the spindles. An apparatus which carries the bearing plates pivots one of the bearing plates through 180.degree. out of the vicinity of adjacent bearing plates between the ring spinning position and the unreeling swiveled position of the spindles.

Abstract: Packages, particularly cross-wound packages are produced directly at a ring spinning frame. In a method and apparatus for making packages a rewinding device is provided for a group of spinning stations. The rewinding device comprises a fixed winding station and a gripping device movable along the group of spinning stations. The rewinding device is able to perform all the manipulations for starting up a spinning process with empty yarn carriers. It is also possible to change the full yarn carriers and mount the empty yarn carriers on a spinning frame, remove thread breaks and carry out spinning following a batch change. Spinning of the individual yarn carriers takes place individually, so that when replacing one yarn carrier, the other spinning stations continue to operate. This leads to a high production rate of the ring spinning frame and simultaneously reduces costs for rewinding compared with known systems.

Abstract: A method for winding a covered yarn in a covered yarn manufacturing machine. A non-elastic yarn is supplied from a wrapping yarn bobbin and is wrapped around a core yarn made of an elastic yarn to form a covered yarn. The covered yarn is traversed by a traverse guide along a winding bobbin and is wound around the winding bobbin. The traverse guide is displaced along the winding bobbin to a position outside a normal traversing region when the non-elastic yarn on the wrapping yarn bobbin has almost consumed. Thereafter, the covered yarn manufacturing machine is stopped. Then, the consumed wrapping yarn bobbin of non-elastic yarn at supply is replaced by a new wrapping yarn bobbin of non-elastic yarn. The covered yarn manufacturing machine is restarted. The above-described steps of the displacing, the stopping, the replacing and the restarting are repeated with regard to one winding bobbin.

Abstract: In the processing of light waveguides, a method uses an overhead haul-off from a first supply reel to apply a pre-twist to the light waveguide, which is preserved during a tinting operation and while the tinted waveguide is wound in a tangential direction on a second supply reel. During further processing, in acordance with the present method, the waveguide is taken off by an overhead haul-off process from the second supply reel in a direction of haul-off which is opposite to the direction during the first overhead haul-off so that the twist produced by the second overhead haul-off is in an opposite direction and compensates for the twist produced during the first overhead haul-off operation.

Abstract: In the case of an arrangement for producing staple fiber yarn that is first prespun on an air spinning machine and that subsequently is finish-spun on a simplified ring spinning machine, it is provided that the air spinning machine and the ring spinning machine, by means of a conveying device for the spools receiving the prespun yarn, are connected to form a machine system, the ring spinning machine of which and the air spinning machine of which each have a number of spinning points that are coordinated with one another.

Abstract: A method of producing twisted yarn comprises precision doubling several single yarns in a precision assembly winder to form a precision package which is dyed or bleached. The yarn is thereupon twisted during withdrawal from the precision package.

Abstract: The present invention relates to a process for covering an elastane yarn stretched by three to five times, with a covering yarn, characterised in that it consists:in a first phase, in covering the drawn elastane yarn with the covering yarn with a twist of the order of one third the usual twist of single-covering, and in receiving this covered yarn on a bobbin,then, in a second phase, in taking up this bobbin of covered yarn on a twisting member to communicate thereto an additional twist until a twist which is equal to the usual twist of single-covering is obtained on this yarn.

Abstract: Glass fiber strand is prepared from a process so that the strand can be bulked at higher processing speeds. The process involves drawing the glass fibers from molten glass, applying an aqueous treating composition to the fibers, gathering the treated glass fibers into one or more strands and collecting the glass fiber strands onto one or more packages, drying the packages, rewinding the packages onto a second, more supportive package, steaming one or more of the second packages and drying the steamed packages so that the package has a moisture content of around 1 to about 25 weight percent. The aqueous treating composition used to treat the glass fibers in forming has one or more starches, an aqueous soluble, emulsifiable or dispersible wax wherein the amount of wax in the aqueous treating composition is less than the amount of starch, a cationic lubricant and water.

Abstract: A stranding machine comprising a plurality of stands, each carrying a pair of bobbins disposed on opposite sides of the stand, wire on a bobbin being fed through a hollow, rotatable shaft on the stand along with a core, such as an electric cable core, and to a stranding unit. The number of stands is equal to the number of wires to be stranded, and each stand carries means for paying-off wire from either bobbin and means for loading either bobbin with wire, the wire guiding means of the latter being movable from adjacent one bobbin to adjacent the other bobbin, whereby one bobbin may supply the wire for stranding while the other bobbin is being loaded with wire. Drive means, separate from means which rotates the hollow shaft, rotates the bobbin being loaded and can drive either bobbin.

Abstract: Yarns or filaments from producers packages, having little or no twist therein and mounted upon two-for-one spindle units, are uptwisted, directed to a ply twisting unit where the twisted filaments are plied and downtwisted onto a takeup bobbin of a spindle unit. A selected percentage of the required twist is inserted as the plied, cabled filaments are wound upon the takeup bobbin and the remainder of the required twist inserted as the filaments are unwound from the takeup bobbin and directed to a winder unit. Alternatively, the rate of twist applied to the plied filaments may be increased by driving the traveler ring, thus increasing the life or the speed of the traveler which directs plied filaments to the driven takeup bobbin. Occasionally, when two-for-one spindle units are applying extremely high twist, which slows down the delivery of twisted plied filaments, the driven downtwist takeup spindle unit may employ a super high speed stationary traveler ring.

Abstract: Disclosed is a method and apparatus for winding covered yarn, namely non-elastic yarn twisted about a strand of elastomeric yarn, on a core to form a take-up package so that the wound covered yarn can be drawn (unwound) from the package without hanging up on itself or puckering.

Abstract: A continuous twisting and cabling machine including a yarn feeding and twisting section and a cabling and rewinding section positioned below the twisting section. The twisting section includes a series of removable assemblies supporting a series of twist spindles, control and brake means for the spindles, connecting means to a transporter and fixing means for attachment to the cabling and rewinding section.

Abstract: In the case of an arrangement for producing staple fiber yarn that is first prespun on an air spinning machine and that subsequently is finish-spun on a simplified ring spinning machine, it is provided that the air spinning machine and the ring spinning machine, by means of a conveying device for the spools receiving the prespun yarn, are connected to form a machine system, the ring spinning machine of which and the air spinning machine of which each have a number of spinning points that are coordinated with one another.