Abstract: A condensing zone for condensing a drafted fiber strand is arranged downstream of the front roller pair of a drafting apparatus of a ring spinning machine. The condensing zone includes a stationary sliding surface having a suction slit, over which the fiber strand is transported by a perforated transport belt. The condensing zone is bordered on its exit side by a nipping roller which is disposed on the transport belt. The nipping roller drives the transport belt and is in turn driven by a friction roller. The friction roller is pressed, by means of a loading spring, onto the nipping roller as well as onto a roller of the front roller pair of the drafting apparatus.

Abstract: A fixed tube of circular cross-section, which is common to several spinning stations disposed side by side, is connected to a suction source and has, in each station, a suction slot arranged on the path of a bundle of fibers to be compacted and along its direction of advance. A cylindrical sleeve is freely rotatable on the tube and has a perforated portion which extends around a corresponding slot. The sleeve is rotated about the fixed tube by a pressure roller which presses the bundle of fibers against the perforated portion of the sleeve. The sleeve cooperates with an axially stationary retaining element which is separate from the tube and is arranged to limit the axial movements of the sleeve along the tube.

Abstract: A locating frame for drawing and compacting units of a pair of adjacent spinning stations in a spinning machine where each drawing unit has a pressure roller which supplies the bundle of fibers to the compacting unit and which rotates a pressure roller of the compacting unit, by means of a belt transmission. The frame comprises: two pairs of seats for housing and keeping parallel and spaced apart two axles on which the pressure rollers of the drawing units and the pressure rollers of the compacting units of the two adjacent stations are mounted rotatably, longitudinal arms acting on the axles in order to keep the pressure rollers of the same spinning station aligned longitudinally, and transverse arms for keeping the transmission belts of the two adjacent stations, respectively, aligned with ring gears fixed for rotation with the pressure rollers.

Abstract: A condensing zone for condensing a drafted fiber strand is disposed downstream of a front roller pair of a drafting unit of a ring spinning machine. The condensing zone comprises a stationary sliding surface having a suction slit, over which the fiber strand is transported by an air-permeable transport belt. The condensing zone is bordered on its exit side by a nipping roller disposed on the transport belt. The nipping roller drives the transport belt and is in turn driven by the front pressure roller of the drafting unit. The front pressure roller is, for this purpose, connected with the nipping roller via a drive belt, preferably a toothed belt. The nipping roller and the front pressure roller are arranged on supporting arms which can be spread apart and which tension the drive belt.

Abstract: In a process for condensing a drafted fiber strand in a condensing zone arranged downstream of a front roller pair of a drafting apparatus, the fiber strand is transported through the condensing zone by means of a perforated, suctioned transport belt. It is hereby provided that the fiber strand has the same direction of motion as the transport belt. Furthermore, it is ensured that a sufficient amount of the fibers located in the fiber strand are still nipped by the front roller pair during condensing. This results in the advantage that the front ends of the fibers of the fiber strand to be condensed do not insert themselves into the perforation of the transport belt, thus leading to clogging.

Abstract: A drafting frame for a spinning machine, especially a ring-spinning machine can be readily retrofitted with a compaction device adjacent the last pair of drafting rollers if the condensing zone is defined between a clamping location formed by the nip of the last roller pair and a clamping location formed by a number of elements of the compacting device against the upper roller of the last roller pair.

Abstract: A top roller unit is arranged on a top weighting arm for a drafting apparatus of a spinning machine, which top roller unit has a holding device and two double top rollers and is arranged at two adjacent spinning stations. A first top roller of a spinning station borders a drafting zone which serves to draft a fiber strand, and a second top roller of a spinning station borders a condensing zone which serves to condense the fiber strand and which is arranged downstream of the drafting zone. The second top roller of each spinning station is driven via a drive by the first top roller, which drive takes the form of an intermediate gear which is common to all the top rollers of the top roller unit. The top roller unit is supported by a housing which encapsulates the intermediate gear.

Abstract: Rotating winch for stranding lines comprising a hollow rotor (1) wherein a motor (9) suitable for rotating a drawing drum (12) around an axis perpendicular to the axis of rotation of the rotor (1) is arranged, the external lateral surface (21) of said drawing drum (12) having a substantially concave profile which is included between two containment walls (22, 22′). Said profile is preferably symmetrical and has a substantially constant radius of curvature, equal to about the double of the distance between the containment walls (22, 22′) and to about ⅔ of the external diameter at the center of the drawing drum.

Abstract: A drafting frame for a spinning machine, especially a ring-spinning machine can be readily retrofitted with a compaction device adjacent the last pair of drafting rollers if the condensing zone is defined between a clamping location formed by the nip of the last roller pair and a clamping location formed by a number of elements of the compacting device against the upper roller of the last roller pair.

Abstract: A wire stranding machine is provided, being capable of stranding the wire materials evenly and uniformly even if two wire materials are used, by installing the capstan assembly outside of the rotary structure on the wire incoming side. A rotary structure having the winding drum inside of a flyer bow is supported by main shafts, and the capstan assembly is disposed adjacent to the main shaft on the wire incoming side. The capstan assembly includes a pair of capstan members consisting of main and auxiliary capstans, each having plural grooves on the outer circumferential surface thereof, and the main capstans are set opposite to each other. The capstan assembly is so arranged that the main and auxiliary capstans are set on the mounting member of the main shaft supporting the rotary structure and disposed parallel in the direction perpendicular to the axis of the main shaft. The main capstans are adapted to rotate at the same speed but in opposite directions to each other.

Abstract: A sliver compactor is provided between a drafting roller of a drafting frame and the delivery unit which supplies the sliver to the spinning stations of the spinning machine. The sliver compactor has a shielding element juxtaposed with the perforated moving surface to which suction is applied and which reduces the suction force required to draw the fibers of the sliver into a compact form. The shielding element extends over a plurality of slivers and the respective spinning stations and a number of such shielding elements may be aligned over the length of the machine below the stretching field plane and secured on the machine frame.

Abstract: A condensing zone for condensing a drafted fiber strand is disposed downstream of a front roller pair of a drafting unit of a ring spinning machine. The condensing zone comprises a stationary sliding surface having a suction slit, over which the fiber strand is transported by an air-permeable transport belt. The condensing zone is bordered on its exit side by a nipping roller disposed on the transport belt. The nipping roller drives the transport belt and is in turn driven by the front pressure roller of the drafting unit. The front pressure roller is, for this purpose, connected with the nipping roller via a drive belt, preferably a toothed belt. The nipping roller and the front pressure roller are arranged on supporting arms which can be spread apart and which tension the drive belt.

Abstract: A condensing zone is arranged downstream of the drafting apparatus of a ring spinning machine, through which condensing zone an air permeable transport belt transports the drafted fiber strand. A cleaning element is arranged at the transporting element, which cleaning element takes the form of, for example, a cleaning roller, and which is pressed using a light pressure onto the transporting belt. The rotation direction of the cleaning roller preferably runs in the opposite direction to the direction of motion of the transport belt. The driven bottom roller of the front roller pair of the drafting apparatus can serve as a cleaning roller.

Abstract: A condensing zone for condensing a drafted, still twist-free fiber strand is arranged downstream of a front roller pair of a drafting unit of a spinning machine. An air-permeable transport belt transports the fiber strand through the condensing zone. The transport belt slides hereby over a stationary sliding surface, in which a suction slit of a suction channel is located. At the end of the condensing zone, the fiber strand is pressed with the transport belt by a nipping roller to the sliding surface. The nipping roller as well as the front pressure roller of the drafting unit are supported in a top weighting arm. A separate pressure spring is arranged each for the top pressure roller and for the nipping roller. It can be provided that the nipping roller is arranged at a holding device, which can be swivelled around a swivel axle, which lies coaxially to the axle of the front pressure roller.

Abstract: Method of and apparatus for bundling fibers of a sliver in the drafting frame of a spinning machine in which a fiber-bundling zone is provided downstream of the last pair of drafting rollers. The fiber-bundling zone can be formed with a transporter for the sliver, e.g. a belt, provided with an array of perforations having a width which is at least equal to the traversing width of the sliver. The suction orifice juxtaposed with the array of perforations of the belt is inclined to the direction of the travel of the sliver and preferably extends over the full width of the traversing motion. The edge of the orifice can be rectilinear or curved.

Abstract: An arrangement for a ring spinning machine for condensing a drafted but untwisted fiber strand includes a drum which transports the fiber strand through a condensing zone. The drum is provided on its outer sleeve with a perforation. In order that the perforation can be particularly fine and close-meshed, the outer sleeve of the drum forms a supporting skeleton, which comprises openings, which are covered over by a thin sieve belt, preferably a woven tape. The sieve belt extends over a suction slit located in the condensing zone. The skeleton is so formed that in the area of nipping points, formed together with the drum, the skeleton is sufficiently resistant.

Abstract: A condensing zone is arranged downstream of the front roller pair of a drafting arrangement of a spinning machine, in which condensing zone a drafted roving or a sliver is condensed. The condensing zone has a suction device which has a closed hollow profile and which serves as a sliding surface for a circulating sieve belt. The sieve belt transports the drafted fiber strand to a nipping roller, which presses the fiber strand and the sieve belt against the sliding surface at a nipping point. The fiber strand travels over an essentially in transport direction extending suction slit located in the condensing zone, which suction slit extends to the nipping point.

Abstract: A high efficiency method of producing a high quality knit fabricis diclosed. The method includes the steps of drafting a blended sliver of cotton fibers and polyester fibers in a four roll draffing zone in which the nip to nip spacing in the break zone is no more than 2.5 mm longer than the effective fiber length of the polyester fibers, and no more than 1.5 mm greater than the effective fiber length in the intermediate zone, and at least 7 mm greater than the effective fiber length in the front zone, thereafter spinning the drafted sliver into yarn at a take up speed of greater than 150 meters per minute, and thereafter knitting the spun yarn into fabric.

Abstract: A condensing zone is arranged downstream of the main drafting area of a drafting assembly of a ring spinning machine, which condensing zone is defined on one side by a front roller pair of the drafting assembly and on the other side by a nipping roller which presses a drafted fiber strand against a supporting surface. The peripheral speed of the nipping roller is from 3% to 8% greater than the peripheral speed of the front roller pair. The fiber strand to be condensed obtains thus a lasting draft in the condensing zone.

Abstract: A condensing zone is arranged downstream of the front roller pair of a drafting arrangement of a spinning machine, in which condensing zone a drafted fiber strand is condensed. The condensing zone comprises a sliding surface having a suction slit, which sliding surface serves as a guide for a circulating air-permeable transport belt. The transport belt transports the fiber strand over the suction slit to a nipping roller, which presses the fiber strand and the transport belt against the sliding surface. The perforation of the transport belt presents a risk, namely that fiber fly or other impurities can be deposited between the sliding surface and the supporting surface of the transport belt arranged thereto. For this reason it is provided that the sliding surface has at least one sharp edge, which extends transversely to the transport direction and which scrapes the supporting surface. The sharp edge lies preferably in the area of the supporting surface which covers the suction slit.

Abstract: Flyer drafting arrangements deliver drafted fiber strands, whose width is greater than their height. Because of this, a condensing zone is often arranged downstream of the flyer drafting arrangements, which bundles the respective fiber strand laterally. Up to now, such condensing zones comprised mechanical condensers, which produced very unsatisfactory results. It is therefore provided in the present invention that a pneumatic condensing device is arranged at the condensing zone arranged downstream of the flyer drafting rollers. This condensing device can comprise a suction slit extending essentially in transport direction of the fiber strand, which suction slit is covered by an air-permeable transporting surface which guides the fiber strand.

Abstract: A condensing zone for pneumatic condensing of the drafted, still twist-free fiber strand is arranged downstream of the drafting apparatus of a ring spinning machine. The condensing zone is limited by a delivery roller pair, whose driven bottom roller is a suction roller, which is arranged directly downstream of the front roller pair of the drafting apparatus. The fiber strand loops the suction roller at an angle of at least 45°.

Abstract: An arrangement and method for spinning a yarn from a plurality of yarn components includes a drafting arrangement, a condensing zone arranged downstream thereof and also a ring spindle which twists all yarn components jointly. The condensing zone has a stationary sliding surface for a perforated transport belt which transports the yarn components through said condensing zone. At least one suction slit is located on the sliding surface, which suction slit extends essentially in a transport direction of the yarn components. The condensing zone is defined on its exit side by a nipping roller, which presses the yarn components and the transport belt onto the sliding surface. The at least one suction slit extends to the nipping point. The yarn components may be a sliver or roving and a core yarn, or two slivers or rovings, which, with or without any core yarn, together form the subsequent yarn.

Abstract: Yarn is unwound from a reel by means of unwinding rollers. Simultaneously the yarn is untwisted partially to free constituent fibers by means of a rotating arm guiding the yarn through an eye. Nip rollers prevent slack in the untwisted yarn. Drafting rollers draft the untwisted yarn to break bonding among the fibers. A pair of endless belts moving in opposing relation hold the drafted fibers together in a bundle. The fibers are sucked from the bundle via a conduit into a foraminous container from which the fibers can individually be reclaimed for testing.

Abstract: A yarn is made on a pot-spinning machine by drafting a roving and then condensing the roving via a suction roller or belt before the yarn is twisted on a pot-spinning station.

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.

Abstract: A compacted yarn is produced by providing a row of orifices subsequent to drafting along which the fiber strand is guided and after which the fiber strand is subjected to a twist according to the invention the suction air flow is monitored at least at one suction location and upon falling below a threshold, a signal is generated which can be used for shutdown or to alert personnel. The result is elimination of the reduction in yarn quality which can occur when the compaction system becomes blocked by lint, fiber accumulation or the like.

Abstract: To produce a mock yarn which is similar in appearance to a true yarn with respect to the ability to discern the components of the mock yarn after the twist has been imparted to the mock yarn, the rovings or slubbings forming the mock yarn, after drafting separately but parallel to one another in a drafting frame, are subjected separately to condensing and compaction by suction rollers or belts provided with rows of perforations. Thus compacted and condensed rovings are then combined, twisted and wound up as mock yarns. A core thread can be introduced into each roving or into at least one of the rovings upstream of the last pair of drafting rolls or immediately upstream of the condensing unit for a core mock yarn.

Abstract: A spinning machine in which downstream of the drafting frame and as part thereof, beyond the output rollers thereof, a suction roller is provided above the roving and cooperates with at least one counterroller below the roving to condense the roving before it is wound up on a ring-spinning or pot-spinning station.

Abstract: A drafting equipment is provided with a small double belt for spinning machines with a fiber bundling zone which follows the pair of output rollers of the main drafting field and is followed by a pair of delivery rollers. A pneumatic compression device is provided between the pair of output rollers and the pair of delivery rollers. A pneumatic compression device is provided with a small perforated belt and a suction device extending on the side of the belt away from the fiber sliver and which sucks air through the fiber sliver between the pair of output rollers and the pair of delivery rollers.

Abstract: A cleaner for a roving apparatus which is free from an adverse effect caused by air flow blowing along an upper surface of a roller beam rearward of the roller beam, and which, after the fibers scraped from the bottom clearer cloth are collected to the rear of the roller beam, conveys the fibers to the end of an apparatus frame. The fibers, etc., adhered to the bottom clearer cloth are scraped by a scraper to fall onto a roller beam 1. The fallen fibers, etc., and the fiber waste which tends to be accumulated onto the upper surface of the roller beam are guided to a guide rail 25 by the action of air flow blowing from an air-blowing tube, to thereby accumulate on a bottom part 25a of the guide rail 25. The fibers, etc., are conveyed to the end of the guide rail 25 by a scraper 41 moving along the guide rail 25, and then collected in a dust box provided at the end of the apparatus frame. The bottom part 25a of the guide rail 25 is located lower than the upper surface of the roller beam 1.

Abstract: A condensing zone lies downstream of the front roller pair of a drafting unit of a spinning machine, in which condensing zone a drafted fiber strand is condensed. The condensing zone comprises a sliding surface having a suction slit, which sliding surface serves as a guide for a circulating, perforated transport belt. The transport belt transports the fiber strand to a nipping roller, which presses the fiber strand and the transport belt against the sliding surface. The nipping roller is connected to a drive, from which drive said nipping roller can be cut off in age the case of a break in the transport belt.

Abstract: To provide a twisting apparatus in which one of a pair of twisting rollers t1 and t2 is a hollow rubber roller t1, while the other is a hard cylindrical roller t2 in which a rubber band t16 is installed. Twisting efficiency is improved compared to the conventional twisting roller both comprising hollow rubber rollers. Thus, by applying the present invention to a spinning apparatus for manufacturing spun yarn from a fiber set, the spinning speed of the spun yarn can be increased and the spinning range extended.

Abstract: A textile machine is provided with drafting equipment for drafting fiber material. The drafting equipment includes a suction device disposed to remove dirt separated from the fiber material. The textile machine further includes a guiding device configured to guide fiber material into an inlet of the drafting equipment. The guiding device further includes a dirt separating device configured therewith so that dirt particles are separated from the fiber material prior to the fiber material reaching the inlet of the drafting equipment.

Abstract: To prevent yarn from being cut when an operating spinning machine stops, thereby preventing subsequent re-activation from being affected. In a spinning machine for manufacturing yarn by passing a fiber bundle that exits a draft apparatus 1 through a spinning nozzle 2 injecting a swirling air current and then through a twisting apparatus 3 that twists the fiber bundle in a direction reverse to that of the swirling air current, each spinning unit is driven independently, and the draft apparatus 1 can be decelerated or accelerated with the speed ratio of each pair of rollers being maintained. When the spinning is stopped or activated, the draft apparatus 1 and the twisting apparatus 3 simultaneously decelerate or accelerate so as to be simultaneously stopped or activated, and in response to this operation, air injection from the spinning nozzle 2 stops or starts.

Abstract: A spinning machine having a drafting frame, a condensing unit at the downstream side of the drafting frame and a spinning station for winding up the yarn and imparting twist to the roving in forming the yarn. The condensing unit comprises a disk-shaped suction rotor oriented in a plane tangent to the output rollers of the drafting frame. A limited compaction zone is formed by a shield within a suction rotor and designed to apply suction only to a limited portion of the perforated periphery thereof. The pressing roller bears against the suction rotor at the downstream side of the compaction zone.

Abstract: A yarn is spun by dividing a traveling fiber assembly into a plurality of fiber sub-assemblies, causing the sub-assemblies to traverse different paths and then recombining them, wherein the paths are sufficiently proximate for fibers to continuously transfer from one or more of the sub-assemblies and be drawn onto or into another or other sub-assemblies. Also disclosed is a method for forming a yarn comprising twisting a plurality of fiber sub-assemblies together at a convergence point to form a fiber assembly being a yarn, and further including cyclically altering the relative twist propagation in and/or into the sub-assemblies upstream of the convergence point. Still further disclosed are alternative methods involving cyclic variation of paths traversed by the sub-assemblies, and cyclic alteration of the relative positions of the sub-assemblies. Apparatus is described for carrying out each method.

Abstract: There is described an apparatus for bundling a drafted roving (4), comprising a rotating conveying surface (3) provided with air through-holes (6) succeeding each other in direction of rotation (9), and comprising a suction means connected to the conveying surface (3) on the side facing away from the roving (4) in the vicinity of the air through-holes (6), which suction means forms a slot-like suction zone (5) for the roving (4) extending in direction of rotation (9) of the conveying surface (3). To create advantageous constructional conditions, it is proposed that the suction zone (5) should have at least one suction slot tapering in direction of rotation (9) of the conveying surface (3) from at least two rows of holes to one row of holes.

Abstract: A drafting and spinning apparatus is disclosed that produces highly uniform yarns with improved mechanical properties. The apparatus comprises a plurality of pairs of drafting rolls for drawing a sliver formed of one or more types of staple fibers, each fiber type having a predetermined effective fiber length. The plurality of pairs of drafting rolls comprises at least two pairs of intermediate rolls, with the distances between the nips of adjacent intermediate roll pairs being no more than the effective fiber length of the longest fiber type in the sliver. The apparatus further includes device for spinning the sliver into yarn at a take-up speed of greater than 150 meters/minute.

Abstract: A spinning apparatus is disclosed according to the invention having a drafting zone comprising at least four roll pairs for drawing a sliver comprising one or more types of staple fibers. The rolls pairs include a back roll pair, intermediate roll pairs and a front roll pair and the distance between the nip of the back roll pair and the nip of the adjacent intermediate roll pair, and the distances between the nips of adjacent intermediate roll pairs is no more than the effective fiber length of the longest staple fiber type in the sliver. The drafted sliver may be spun into yarns at high speeds, such as the speeds used in air jet spinning apparatus to provide yarns having increased strength and reduced defects. The present invention also includes a method of forming high quality and high uniformity yarns by advancing a sliver through a drafting apparatus and thereafter spinning the sliver into yarn.

Abstract: A rail for supporting and guiding the lower belt of a drafting frame of a textile machine is provided with a coating of one or more of aluminum oxide, titanium dioxide, chromium oxide or molybdenum oxide in an oxide ceramic powder with a hardness of 800 to 1500 HV and a grain size of 45 to 5 .mu.m. A pressing arm urges the stand against its belt.

Abstract: To allow the gap between a pair of belts and the output pair of rollers of a drafting frame for a textile machine to be reduced, the sliver compaction funnel which is disposed at the inlet side of the nip of the output pair of rollers is mounted on an arm which extends alongside the upper rollers or upper belt. The funnel can be mounted on two arms which straddle the ends of the upper roller or upper belt.

Abstract: In the pneumatic pressing of textile strands in a drafting frame the pressure in the pressure line is monitored by a pressure sensor and/or a flowmeter and used to control a value between the pressure source and that pressure line. According to the invention a disturbance signal is outputted when the pressure in the line drops below a threshold, the control signal for the valve exceeds a threshold, the displacement of the value member exceeds a certain level and the flow rate exceeds a value so as to indicate leakage beyond a tolerance level.

Abstract: A twisted yarn structure includes constituent fibers which extend between a surface and a core of the yarn structure so that at least one portion of each fiber is trapped and bound within the yarn structure by portions of other fibers. The fibers can extend cyclically or in random fashion between an inner region and an outer region of the yarn, and can be twisted in subgroups along the length of the yarn structure to be locked in position therein. To produce the yarn structure having fibers which cyclically extend between the inner and outer regions, the fibers of a drafted strand of fibers from front drafting rollers are spun and passed through an oscillating guide before being wound on a spindle.

Abstract: A twisting frame 1, and a method of twisting yarn 11 in which a twist is applied to the yarn by signals having a 1/f fluctuation to yield a yarn 11 in which the yarn count varies with a 1/f fluctuation. The first aspect is a twisting method that applies twist to a single yarn or a plural number of yarns, in which a twist is applied to the yarn or yarns by setting the twist count to correspond to the strengths of serial signals having a 1/f fluctuation.

Abstract: A spinning plant machine has a basic drafting equipment body to receive drafting equipment which has at least two pairs of rollers, whereby each pair is constituted by an upper roller and a lower roller. A device for the adjustment of the distance between the pairs of rollers is in the form of a push rod which is coupled to the bearing arrangement of the lower rollers as well as to fix the support of the lower rollers on the basic drafting equipment body. The push rods can be adjusted with precise parallelism and position.

Abstract: A piecing method for a spinning machine wherein, following stoppage of the spinning operations, after cutting the sliver (S) between the usually rotating draft rollers (13) and the stopped draft rollers (12) and before the restarting of drafting and spinning, the sliver (S) is once again cut between the usually rotating draft rollers (13) and the stopped draft rollers (12) by driving the stopped draft rollers (12) for a predetermined period of time and then stopping again, thus sliver (S) is supplied to the twisting part (2) by then driving the stopped draft rollers (12). Therefore, not only can the sliver fiber density of the sliver end supplied to the piecing area during piecing be increased, but that length of the tip of the sliver can also be shortened. Accordingly, the strength of the piecing part is increased and the length of the piecing part can be shortened.

Abstract: A plant structure having three floors with first and second ring spinning apparatuses located on the first floor and with vertical sliver feed tubes extending from the first and second ring spinning apparatuses respectively to the second floor for feeding a sliver through the sliver feed tube to the first ring spinning apparatus and to the third floor for feeding sliver from a can thereof to said second ring spinning apparatus. Each of the sliver feed tubes is provided with a fitting, including a slide section extending at an obtuse angle to the tubes, such that sliver strands descend through the tubes and through the associated fittings before they are fed into associated ring spinning machines.

Abstract: An apparatus and method for interrupting delivery of sliver to a spinning frame for spinning sliver into yarn and winding the yarn onto a spindle utilizing a sliver stop motion. The sliver stop motion is positioned on a respective drafting system of the spinning frame. The sliver stop motion is mounted to the spinning frame so as to overlie the back drafting rolls for stopping the motion of sliver being drafted by the back drafting rolls responsive to a break in yarn being wound onto the spindle. The stop motion includes an elongate pivoting member which is pivotally mounted to a frame mounting member. The frame mounting member is pivotally mounted to the spinning frame. At the stop motion's proximal end, a yarn contact member extends outwardly therefrom so as to underlie and slidably contact yarn being directed to the respective spindle. A sliver comb is connected to and extends outwardly from the distal end of the elongate pivoting member so as to overlie sliver being drafted by the back drafting rolls.

Abstract: In the blending and spinning processes, 1/f fluctuation signals are imparted to the feed slivers or rovings, wherein the blending ratio of the blended slivers, blended rovings, or blended yarn varies with a correlation, specifically a correlation with a 1/f fluctuation.