Abstract: Roller pair for tensioning strands of filter material in the manufacture of cigarette filters with a first roller made of metal which is rotatably driven by a drive and a second roller of which the surface consists of a resilient material, the two rollers being mounted on one side on a frame or the like and the second roller being pivotally mounted about a horizontal axis perpendicular to its longitudinal axis, away from the first roller and towards the latter, and an actuation device for pivoting the second roller, the second roller able to be driven by a drive via a second drive shaft and an articulated shaft and being mounted such that the size of the gap between the rollers can be altered along its length to adapt to the thickness of the material.

Abstract: A drawing mechanism for the doubling and drafting of fibre slivers, has a drawing mechanism frame for accommodating the drawing mechanism, which has at least two pairs of rollers each comprising an upper roller, and a lower roller, and has means for adjusting the spacing of at least one of the lower rollers in relation to another lower roller, in each case having a mounting device for accommodating the lower roller, wherein lower rollers are arranged to be driven by a drive device comprising at least one drive element endlessly revolving around pulley wheels. In order, by simple means in terms of construction, to make possible a considerable reduction in the work and time required for adjustment of the lower roller(s) and, accordingly, of the extent(s) of the drawing zone(s), the mounting device(s) are made adjustable by the drive device.

Abstract: A drawing mechanism for the doubling and drafting of fiber slivers has a drawing mechanism frame for accommodating the drawing mechanism, which has at least two pairs of rollers each comprising an upper roller and a lower roller and has means for adjusting the spacing of at least one of the lower rollers in relation to another lower roller, in each case having a mounting device for accommodating the lower roller, lower rollers are arranged to be driven by a drive device comprising at least one drive element endlessly revolving around pulley wheels and each lower roller has a roller-driving pulley wheel.

Abstract: A drawing mechanism for the doubling and drafting of fibre slivers, has a drawing mechanism frame for accommodating the drawing mechanism, which has at least two pairs of rollers each comprising an upper roller, and a lower roller, and has means for adjusting the spacing of at least one of the lower rollers in relation to another lower roller, in each case having a mounting device for accommodating the lower roller, wherein lower rollers are arranged to be driven by a drive device comprising at least one drive element endlessly revolving around pulley wheels.

Abstract: A top making apparatus is attached to a woolen card. Materials usually to be processed on a woolen card are fed and the delivered web is guided by the top making apparatus and ball tops are formed by the top making apparatus. This top is processed on cotton spinning system. Finer and even yarn can be spun with the top.

Abstract: Top making apparatus is attached to a woolen card.

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 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: 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 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: An automated drafting system particularly suitable for drafting textile strands of sliver is provided. The automated drafting system includes a synchronous drive sliver drafting roller system utilizing toothed gears in the preferred embodiment operatively connecting a pair of drafting rollers with one of the rollers being directly driven by a motor to thereby cause identical rotation of both rollers. The automated drafting system also includes a system for securing and pressuring together upper and lower sliver drafting rollers wherein the lower roller of a pair of drafting rollers is preferably maintained in a fixed but rotational position while the upper roller of the pair is pressured towards the lower roller and controllably restricted as to both horizontal and vertical movement during the drafting process.

Abstract: Worsted grade all-wool of fair quality can be spun on cotton spinning system. Wool top is processed at first passage of cotton drawing frame instead of gill, with cutting and drafting with suitable distance between front and third rollers. Second and back top rollers are removed so that wool sliver which is more uniform and which has a shorter staple length distribution can be processed with roller drafting only. The second to last passage is processed with the same distance between the front and third roller as the first passage and also has the second and back top rollers removed. The sliver is fed through three (3) pairs of the rollers and one pair of aprons of a cotton roving frame, the draft is the same distance as the first passage of drawing process between front and back rollers and uses an engraved middle top roller. Yarn is spun on a cotton ring frame by drafting the fed roving through three pairs of rollers and one pair of aprons.

Abstract: In the case of a textile machine comprising drafting units that are disposed next to one another, the bottom cylinders are arranged in the longitudinal direction of the machine so that they continue along several or all drafting units. The continuous bottom cylinders are disposed at several bearing points which are arranged at a spacing from one another in the longitudinal direction of the machine. It is provided, in the case of the delivery bottom cylinder, to design at least some of the bearing points such that they can be radially adjusted. As a result, radial directional deviations of the delivery bottom cylinder can be compensated which occur along its longitudinal dimension.

Abstract: A draft mechanism for use on a spinning machine includes a series of roller pairs each including a bottom roller and a top roller. The roller pairs are connected to output shafts of motors through the use of timing belts. The motors are electrically controlled according to the draft ratios. Roller gauge adjusting shafts are meshed with bearing portions of the top and bottom rollers.

Abstract: A spinning machine having several spinning points is disclosed having at least one drafting unit assigned to each spinning point. Each drafting unit has several top rollers and several drivable bottom rollers. At least the bottom rollers which are assigned to the feeding side for the fiber material are driven by a common drive shaft extending in longitudinal direction of the machine by means of transmission devices which contain a coupling. It is provided that at least the bottom rollers assigned to the feeding side are arranged adjustably for the adjusting of the distance with respect to the respective rollers which follow while maintaining a driving connection between the common drive shaft and the respective ones of said bottom rollers.

Abstract: A textile drafting apparatus of the type having upper and lower drafting rollers forming a plurality of roller nips for travel therebetween of a textile strand includes a carrier member for adjustably supporting the upper drafting rollers. The textile drafting apparatus includes a force-applying member for applying a downward roller nip force through the carrier member to the rollers. The force-applying member is intermediately transversely offset from the longitudinal center line of the carrier member for permitting access to attaching studs for sliding of the attaching studs in longitudinal slots on the carrier member to adjust the position of the upper drafting rollers in the carrier member. According to another aspect of the present invention, the textile drafting apparatus includes a template device for positioning an upper drafting roller at a predetermined spacing from the pivoting shaft of the carrier member.

Abstract: Disclosed is a new roller drafter for drafting and aligning fibers in a strand or strip of card web e.g. for producing filament-wrapped yarn. The improvements include, increasing (in the direction of strip or strand movement) the distances between nips of adjacent pairs of rolls and optionally increasing in said direction of strip or strand movement the outer diameters of each pair of rolls. Also disclosed are, a process utilizing said roller drafter (optionally with filament wrapping), and a drafted strand or strip and a wrapped yarn which are products of the present invention.

Abstract: The invention is a drafting frame of a spinning or twisting machine comprising a plurality of roll pairs or roll triads comprising upper and lower rolls, the upper rolls being guided at their ends by bearings in at least one supporting arm rotatable about a pivot shaft with the spacing of the upper rolls from each other being changeable. Each of the bearings is a guide means, advantageously an open ended slot, aligned with an axis of a lower roll. Every supporting arm has at least two guide means spaced from each other for at least one of the upper rolls.

Abstract: In a spinning machine with a plurality of adjacently disposed drawing or drafting roller arrangements with which the lower rollers are arranged as lower roller cylinders extending in the machine longitudinal direction, a central control device and adjusting arrangement is provided for the adjustment of the distance of the lower roller cylinders. The central control device is linked to several locations at a lower roller cylinder or to several bearing seats of a lower roller cylinder, whereby all bearing seats of this lower roller cylinder are loosened at guide holders whereby then the bearing seats and the lower roller cylinder are simultaneously brought into the desired position by activating the control device. When in the adjusted position the bearing seats are again fixedly attached to the guide holders.

Abstract: A drawing frame with a drawing region or with two independent drawing regions includes, as a whole, four or more so-called drawing and control rollers. These latter all comprise pressure rollers with barrel rubbers. The control roller situated immediately upstream of the draw-off or "total" drawing roller is arranged in such a position that its periphery is separated from that of the drawing roller by a narrow gap. The ratios between the diameters and the speeds of rotation of these rollers is selected in such a way that the peripheral velocity of the "total" drawing roller is significantly greater than the peripheral velocity of the adjacent control roller. Consequently, an upwardly directed flow of air is created which removes the floating fibres which would otherwise tend to form windings or so-called "rolls".

Abstract: Improved method, and apparatus for practicing the method, for determining parameters of a staple length distribution of fibers in a yarn sliver by feeding the yarn sliver to and between two pairs of drafting rolls initially spaced apart at a greater distance than the longest fiber in the yarn sliver and monitoring the drafting force exerted upon the yarn sliver while continuously decreasing the distance between the pairs of drafting rolls and monitoring the distance, and generating signals representative of the drafting force and distance and feeding them, respectively, to the Y-axis and X-axis of a X-Y recorder and drawing a curve therefrom from which the desired parameters can be determined.