Abstract: The coating of the pressure roller (3) of a drawing roller frame for spinning frames comprises an outer layer and an inner layer fixed to the core of the pressure roller. The outer layer is thinner and harder than the inner layer and is embodied as an endless belt (1) which loosely surrounds the inner layer such that the belt can be displaced in relation to the inner layer. In order to improve the running of the belt, the belt is guided over a deflector rail (2), the cross-sectional area (u) of the rail being wider than the average staple length of the fibre material (F) drawn on the drawing roller frame. Furthermore, the belt is designed in such a way that it comprises a double thread interlining, one thread interlining being wound counter to the second thread interlining such that the threads of one thread interlining cross the threads of the second thread interlining.

Abstract: The present invention relates to a method of producing a fiber board characterized in that it comprises the following processes (a)–(f): (a) a separating process of a bast portion, (b) a fiberizing process by defibrating the bast portion of the kenaf, (c) a preparing process of a mat comprising the kenaf fibers having an average length of 10–200 mm and an average diameter of 10–300 ?m, (d) a supplying process of an adhesive agent into the fiber mat, (e) a drying process of the adhesive agent, and (f) a molding process by heating said fiber mat under pressure to form a fiber board having a density of 600–900 kg/m3.

Abstract: A fiber processing machine includes a sliver drafting unit which has first and second adjoining roll assemblies each defining a nip through which a sliver runs in a sliver advancing direction. The second roll assembly is spaced downstream of the first roll assembly. The nips of the first and second roll assemblies together define a principal drafting field and the drafting direction thereof. At least two pressure bars are disposed in the principal drafting field for contacting and deflecting the sliver from the drafting direction as the sliver advances from the first roll assembly to the second roll assembly.

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 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 sliver guiding assembly for the passage of a sliver bundle discharged in a sliver advancing direction by output rolls of a drawing unit forming part of a draw frame. The assembly includes a sliver guide having a wall face converging in a direction of the advancing direction and a passage provided in the wall face. The sliver bundle is adapted to travel through the passage in the advancing direction. A sliver leading element is disposed upstream of the passage as viewed in the advancing direction for gathering the sliver bundle and for guiding it toward the passage. An arrangement is provided for maintaining communication between a zone of the sliver guide and enviromental air; the zone is defined between the outlet of the sliver leading element and the inlet of the passage.

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 ready drafted fiber strand is condensed by means of rolling in the edge fibers before the yarn to be spun is imparted a twist. The condensing arrangement comprises a sliding surface having a suction slit extending essentially in a fiber strand transport direction, as well as a perforated transport belt which transports the fiber strand over the sliding surface and the suction slit. The sliding surface is the outer contour of a hollow profile, to which a suction device is connected. The transport belt consists of such a thin material that the fiber strand is disposed on the sliding surface and the suction slit at practically no distance thereto. The transport belt is preferably made from polyamide multifilament yarns.

Abstract: A draft free condensing zone for condensing a drafted fiber strand is provided between a front roller pair of a drafting unit of a ring spinning machine and a delivery roller pair arranged downstream thereof. The apparatus for condensing comprises an air-permeable und suctioned sliding surface which is in contact with the fiber strand, under which sliding surface is located a suction slit which is stationarily arranged and extends essentially in transport direction of the fiber strand. The sliding surface is the front surface of a rotating disc, whose rotational axle extends essentially perpendicular to the transport direction of the fiber strand.

Abstract: A fiber processing textile machine includes a mechanism for advancing a sliver bundle, formed of a plurality of slivers, in a travel path in a direction of sliver feed; and a sliver guiding body positioned in the travel path and having an axis of rotation and a plurality of sliver guiding surfaces disposed about the axis of rotation. The sliver guiding surfaces are of different arcuate shape as viewed perpendicularly to the direction of sliver feed. Further, a holding mechanism is provided for positioning the sliver guiding body and supporting it for rotation for orienting a selected one of the sliver guiding surfaces toward the sliver bundle, whereby the sliver bundle is contacted and guided by the selected surface.

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: A fiber processing system includes a fiber processing machine having a sliver guiding element through which a sliver runs; and a separate device which generates a low pneumatic pressure and which supplies a pneumatic stream to the sliver guiding element.

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 device for controlling textile fibers floating through drawing cylinders in a combing machine comprises a plurality of drawing rollers on each of which a rubber roller is pressed, the device further comprising a stationary rod which can be applied, with an adjustable height, to the drawing cylinder assembly, and having a rod contour having a circle arch cross-section facing one of the drawing roller to press on the sliver being drawn, the rod being arranged between the second and third rubber rollers therethrough the sliver passes, the circle arch cross-section contour facing the third drawing roller.

Abstract: A fiber processing machine includes a sliver guiding device having first and second wall elements as well as first, second, third and fourth wall faces. The first and second wall faces which form part of the first and second wall elements, respectively, are oriented toward and spaced from one another to define a first gap. The third and fourth wall faces are oriented toward and spaced from one another to define a second gap. Some of the wall faces are convergent for densifying a sliver running through the first and second gaps. At least one of the first and second wall elements is stationary during operation. First and second cooperating withdrawing rolls immediately adjoin the first gap for pulling the sliver therethrough upon their rotation. The first and second withdrawing rolls define a bight into which the first and second wall faces extend. The first and second withdrawing rolls have respective first and second circumferential roll surface portions forming the bight.

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: A fleece guidance system is provided to convey a fiber fleece to the nip of a pair of calendar rollers. The system includes a funnel having a fiber sliver channel defined therethrough which tapers towards an opening adjacent the nip of the calendar rollers. The channel has a longitudinal axis therethrough which is angled relative to a plane through the axes of rotation of the calendar rollers. Oppositely facing guiding segments are configured on the funnel on opposite sides of the opening. The segments have a forward edge which extends into the nip and define lateral guiding surfaces for the fiber sliver exiting from the opening. A plane through the forward edge of the guiding segments and the opening is essentially perpendicular to a plane through the axis of rotation of the calendar rollers.

Abstract: An apparatus for measuring the thickness of running sliver includes a body having inner walls defining a funnel-shaped cavity through which the sliver passes; a contact finger having an end portion for contacting the running sliver at the narrow end of the cavity; a support arrangement for movably securing the contact finger to the body; a device for urging the end portion of the contact finger into resilient contact with the running sliver for pressing the running sliver against a stationary component at the narrow end of the contact finger, whereby the contact finger performs excursions in response to thickness variations of the running sliver; and a transducer connected with the contact finger to transform displacements thereof into electrical signals. There is further provided an air stream generating arrangement for driving an air stream through the space which accommodates the contact finger, whereby the contact finger is exposed to the air stream.

Abstract: A fleece funnel is provided for use in textile drafting equipment to receive a fiber fleece conveyed by a pair of delivery rollers. The fleece funnel includes a long side disposed adjacent to the delivery rollers. A funnel area is defined in the long side for receiving the fiber fleece. The funnel area defines a planar guiding surface in a planar substantially concave impact surface. A funnel opening is defined in the impact surface and a funnel channel is in communication with the funnel opening. A ramp surface is defined on the long side outside of the funnel area. The ramp surface meets the impact surface and defines a common contour line with the impact surface so that air forced out of the fiber fleece balloon formed as the fiber fleece is conveyed into the funnel opening is drawn away from the funnel area towards the ramp surface unimpeded by planar components of the fleece funnel.

Abstract: In the case of a drafting arrangement for a spinning machine, at least one drafting zone has a sliver guide with a guiding surface for the travelling sliver. The sliver guide is arranged in a wedge-shaped gap, which is formed by a roller pair downstream of the drafting zone. According to the present invention, the sliver guide comprises a sliver brake with a pressing element which slides on the sliver. The pressing element is resilient with a pressure in the direction towards the guiding surface, and is disposable against the travelling sliver. The evenness of the drafting is thereby improved.

Abstract: An apparatus and method for guiding a broken thread end in a yarn spinning machine into a position in readiness for piecing wherein the broken thread end is retrieved from a bobbin, routed through a yarn spinning mechanism, guided into the nip of a pair of rollers of an operating drafting apparatus without abrasion of or interference with the yarn end during the guiding of the yarn end and wherein the yarn end is deposited in a position in the drafting apparatus such that the yarn end is controllably withdrawn from the drafting apparatus through the spinning mechanism and pieced or joined with a new sliver as the yarn end is withdrawn.

Abstract: An apparatus for measuring sliver thickness in a drawing frame includes a sliver guiding device which has an inlet for simultaneously receiving a plurality of side-by-side running slivers having an advancing direction; and a sliver combining arrangement defining a plane extending parallel to the advancing direction for bringing the slivers together to form a sliver assembly constituted by a plurality of side-by-side positioned running slivers arranged in the plane and laterally contacting one another. A movable sensor element is situated at the apparatus outlet and laterally contacts the sliver assembly with an adjustable force. The sensor element undergoes excursions upon variation of thickness of the sliver assembly. The sensor element and a counterelement together define a restriction through which the sliver assembly passes. A transducer converts excursions of the sensor element into electric pulses.

Abstract: An apparatus for measuring sliver thickness in a drawing frame includes a sliver guiding device having converging inner wall faces for bringing a plurality of simultaneously introduced slivers together to form a sliver assembly constituted by side-by-side positioned running slivers arranged in a plane. The apparatus further includes a sensor element laterally contacting the sliver assembly; and a counterelement laterally contacting the sliver assembly. The counterelement is so supported that it may pivot parallel to the plane of the sliver assembly for purposes of adjustment and immobilization. The sensor element is urged into a resilient contact with the sliver assembly whereby the sensor element undergoes excursions upon variation of thickness of the sliver assembly. The sensor element and the counterelement together define a constriction through which the sliver assembly passes. A transducer converts excursions of the sensor element into electric pulses.

Abstract: An apparatus for measuring sliver thickness in a drawing frame includes a sliver guiding device having converging inner wall faces for bringing a plurality of simultaneously introduced slivers together to form a sliver assembly constituted by side-by-side positioned running slivers arranged in a plane. The apparatus further includes a sensor element laterally contacting the sliver assembly; and a counterelement laterally contacting the sliver assembly. The counterelement is so supported that it may pivot parallel to the plane of the sliver assembly for purposes of adjustment and immobilization. The sensor element is urged into a resilient contact with the sliver assembly whereby the sensor element undergoes excursions upon variation of thickness of the sliver assembly. The sensor element and the counterelement together define a constriction through which the sliver assembly passes. A transducer converts excursions of the sensor element into electric pulses.

Abstract: An apparatus for measuring sliver thickness in a drawing frame includes first and second selectively used sliver guiding devices having converging inner wall faces for bringing a plurality of simultaneously introduced slivers together to form a sliver assembly constituted by side-by-side positioned running slivers arranged in a plane. Each sliver guiding device has a sliver inlet and a smaller sliver outlet. Either the inlet or the outlet, or both, have different passage areas in the different sliver guiding devices. A receiving arrangement accommodates the selected sliver guiding device in the apparatus. The apparatus further includes a sensor element and a counterelement laterally contacting the sliver assembly from opposite sides. The sensor element is urged into a resilient contact with the sliver assembly whereby the sensor element undergoes excursions upon variation of thickness of the sliver assembly.

Abstract: The instant invention relates to a compression bar such as is used in the main drafting zone of drafting rollers of the textile industry. The invention considerably reduces deposits on a compression bar. The fixed compression bar has a rectangular cross-section, with its narrow faces being rounded off. On the other hand, the compression bar is rotatably mounted about its longitudinal axis, whereby the compression bar has preferably a circular cross-section.

Abstract: A process and device for bundling a fiber composite which has been drafted in a drafting device having a pair of output rollers and a pair of delivery rollers gathers together the fiber composite leaving the pair of output rollers in a fiber bundling zone. The fiber composite is conveyed through the fiber bundling zone and supported through the fiber bundling zone on one side by a conveying plane which moves in the direction of conveyance of the fiber composite. A suction air stream is drawn through the fiber bundling zone at substantially a right angle to the conveying direction of the fiber composite. The suction air stream causes the gathering together of the fiber composite in the bundling zone at a width substantially equal to a desired width of the fiber composite.

Abstract: A self-threading condenser for disposition within a drafting zone of a textile machine. The condenser includes a diminishing radii guide profile which directs a fiber strand contacting the guide profile into a fiber strand-carrying notch defined in the condenser. The condenser is allowed to float laterally in response to movements of strand passing through the drafting zone.

Abstract: A device for forming core/wrap yarn is provided in which a core strand and one or more wrap strands are passed from the nip of a pair of rollers to a stationary support surface which is outwardly, downwardly curved and which includes an open channel therein; wherein the core strand is passed through the channel from the nip and the wrap rovings are passed from the nip to converge upon and wrap around the core strand in the channel to form wrapped yarn; wherein the support surface may be moved from its operative position to a second position to allow a second mode of operation absent the support surface and wherein the support surface is tapered from the outer edges toward the channel.

Abstract: A short cycle unevenness control device in the delivery part of a carding machine. The device includes a set of measuring rollers 26 and 37 for receiving a sliver from a funnel and a set of drafting rollers 23 and 42 for issuing the sliver S to a coiler. The top measuring roller 37 is provided with an annular groove 36, while a bottom roller 26 is provided with an annular flange 25, which engages with the annular groove 36. The top drafting roller 42 is provided with an annular flange 41, while a bottom drafting roller 23 is provided with an annular groove 22, to which the flange 41 engages. Furthermore, the flange 41 of the top drafting roller 42 engages the groove 36 of the top measuring roller, while the flange 25 of the bottom measuring roller 46 engages the groove 22 of the bottom drafting roller 23.

Abstract: For use with a ring spinning apparatus, a drawing frame is described, which comprises two delivery rollers, which define between them an exit nip for a drawn fibrous roving and one of which defines on its air-permeable peripheral surface a deflecting path for the fibrous roving being delivered and a suction zone, which extends along the deflecting path between the exit nip and a pressure, applying roller, which is peripherally spaced from said nip, and the suction zone comprises two juxtaposed and laterally spaced apart branch suction zones, and a blast nozzle is disposed between said branch suction zones and is operable to direct an air blast against the suction-free area which is disposed between the branch zones, whereby the drawn fibrous roving is divided into two branch rovings. The two branch suction zones merge in the suction zone upstream of the pressure-applying roller into a peripherally extending common suction zone portion.

Abstract: A fleece hopper of a textile draw frame is located between a pair of draw-off rollers and a fiber sliver pipe. Fiber fleece is gathered together in the hopper and deflected into the hopper outlet. The hopper outlet includes a pipe-shaped insert removably fitted therein. The insert can be removed and replaced without disturbing or adjusting the hopper itself.

Abstract: The invention relates to a device to condense and guide a fiber sliver, in particular in a spinning plant preparation machine having a sliver funnel. The funnel is followed by draw-off rollers which are surrounded on both sides by guide surfaces. The lateral distances between the guide surfaces and the draw-off rollers can be adjusted independently of each other. A process is also provided according to which the distance between the guide surfaces is selected to be greater for puffed fiber material than for non-puffed fiber material. Furthermore, the distance between the guide surfaces is selected to be greater with synthetic fiber material than with natural fibers.

Abstract: The drafting arrangement is provided with a guide element between the front roller pair and the operative unit formed by an apron and a roller. The guide element is disposed for guiding a length of fiber between the roller of the operative unit and the front roller pair. The guide element may be of D-shaped cross-section, circular cross-section or in the form of a curved plate. Where cylindrical, the guide element may also be rotated.

Abstract: The sliver guide is comprised of a cylindrical sleeve rotatably mounted on an inner element fixed to the guide table. The sleeve carries a radial outwardly projecting flange above the table in order to support the combed sliver such that the moving sliver rotates the sleeve so that sliding friction does not occur between the guide and the combed sliver. The inner element is adjustably mounted by an eccentrically disposed screw to permit lateral adjustments relative to the table.

Abstract: The drawing mechanism for drawing textile fibers includes an input nip between a first pressure roller (6) and a first drafting roller (1), a first intermediate nip between a second pressure roller (7) and a second drafting roller (2), and an output nip between a third pressure roller (8) and a third drafting roller (3). Two additional nips are formed between a fourth and a fifth pressure rollers (9, 10) and the second drafting roller. A second intermediate nip is formed between a sixth pressure roller (11) and the second drafting roller (2). If the treated fibers are short, the draft occurs between the input nip (6 - 1) and the first intermediate nip (9 - 2), and between the second intermediate nip (10 - 2) and the output nip (8 - 3). If the fibers are long, pressure on the fourth and fifth pressure rollers (9, 10) is reduced. The draft zones then extend to the intermediate nips (7 - 2, 11 - 2). In this manner an adaptation to different fiber lengths is possible without alteration of the roller distances. .

Abstract: A core wrap system is provided in which a core strand and wrap strands spaced from said core strand on each side of said core strand are passed from the nip of a pair of rollers to a stationary support surface that is outwardly, downwardly curved, and which includes an open channel therein which is outwardly, downwardly curved along the surface; wherein the core strand is passed through the channel from the nip; wherein the wrap rovings are passed from the nip to converge upon and wrap around the core strand in the channel to form wrapped yarn in the channel; and wherein wrapped yarn then is passed through a ring traveler to a wind-up spindle.

Abstract: An apparatus for making a yarn consists of at least one ring spinning mechanism and a drawing mechanism, which precedes the ring spinning mechanism and defines at least one draft path for drawing a fibrous roving and includes two delivery rollers defining a clamping nip for the drawn roving, wherein one of said delivery rollers constitutes behind the clamping nip a guiding surface for deflecting the drawn roving. In order to increase the strength of the yarn, it is proposed that the delivery roller which constitutes the guiding surface for deflecting the roving constitutes at least near the delivery end of the guiding surface a slideway for guiding the roving transversely to its axis as the roving is twisted between the ring spinning mechanism and the drawing mechanism.

Abstract: A sliver guide conduit extending between the output and calendar rollers of a draw frame or like spinning preparation machine is of a bipartite construction having an upstream conduit section extending into the interior area of a downstream conduit section, with an air conduit opening tangentially into the interior of the downstream conduit section annularly about the upstream section for admitting an airstream to assist in drawing a sliver through the sliver guide conduit during machine start-up.

Abstract: A blended yarn producing device includes a draft device having back rollers, middle rollers and front rollers and a twisting device succeeding the draft device, which is constituted such that a trumpet guide for introducing slivers of different types separately at upper and lower locations is located on the sliver entrance side of the back roller.

Abstract: Apparatus for guiding the travel of roving between succeeding roller pairs at a spinning machine drafting station having telescoping tube members defining a roving guide channel therethrough and displaceable apart from one another to be variable in length for adjustable disposition between the nip areas of the successive roller pairs throughout a full range of different spacings therebetween.

Abstract: In an apparatus for compressing and automatic introduction of a fibre strand into a feed nip: an opening is formed as a longitudinal slot (12, 12a, b12"a) extending from the outlet port (15) of the nozzle channel (7;7") in the longitudinal direction thereof and in a plane extending substantially perpendicular to the plane (E--E) of the feed nip (1; 1"). The contour of the insertion nozzle (6, 6") adjacent its outlet end on both sides of the longitudinal slot (12, 12a, b; 12"a) is of a shape (9, 10;9") conforming to the contours of the components (2, 3; 2", 8"a), particularly rollers (2, 3) defining the feed nip (1; 1").

Abstract: The fiber strip feed device provided with a fiber strip feed duct between the entrance rolls and the calendering rolls in a spinning machine, particularly in a set of drafting rolls of the spinning machine, has a tangential housing air duct opening into the fiber strip feed duct which is cylindrical. A fiber strip funnel is located downstream of the feed duct toward whose constricted inner space a high pressure pipe is directed whose working direction crosses the axis of the fiber strip funnel for fiber strip feed.

Abstract: A sliver coiler includes a rotary head assembly, a trumpet mounted eccentrically in the rotary head assembly and a sliver support situated at a vertical distance above the rotary head assembly and arranged for guiding the sliver to the trumpet orbiting during rotation of the rotary head assembly. There is provided a hood which encloses a volume above the rotary head assembly and which has a ceiling wall provided with an air inlet opening. The sliver support is arranged in a zone of the ceiling wall.

Abstract: Apparatus for packaging mineral fiber insulation material includes a compression member to gradually compress the material, where the compression member contains a plurality of depressions, the downstream edge of the depressions being sloped to gradually blend with the plane of the compression surface, and the upstream edge of the depressions forming an abrupt drop from the plane of the compression surface, thereby defining an aperture at the upstream edge of the depressions for the escape of air during compression of the material, where the upstream edge is adapted to support the insulation material during the venting of the compressed air.

Abstract: In order to make possible automatic restart of a spinning machine drafting frame after strand breakage in an easy way, a movable blocking member is insertable between the drive roller of the lower feed belt and the lower feed belt in the direction of the line of contact of the lower feed belt and the drive roller, this blocking member on engagement raising the lower belt from its drive roller by operation of a connecting rod attached pivotally to the detent member. Additional roller pairs present upstream of the feed belts are preferably provided with means for simultaneously lifting the various upper rollers from the lower rollers with or without holding the yarn or thread fixed on engagement of the detent member.

Abstract: An apparatus for gathering a running fiber web into a sliver, includes a web guide element having edge portions defining an outlet opening through which the web passes; a trumpet arranged downstream of the outlet opening of the web guide element as viewed in a direction of web advance, and an arrangement for guiding air, flowing against the direction of web advance and generated by web compression downstream of the web guide element, away from a zone extending between the outlet opening of the web guide element and the outlet opening of the trumpet.

Abstract: A drafting roller arrangement for spinning machines is disclosed having at least three pairs of rollers forming successive drafting zones in the conveying direction of the sliver and having a sliver stopping device assigned to the first pair of rollers that can be triggered by a disturbance. In front of the last drafting zone, a sliver condenser having guide surfaces narrowingly tapering in the conveying direction of the sliver is arranged. The sliver condenser is provided with a threading slot extending in the conveying direction of the sliver and is held by means of a holding device in such a way that it can be moved out of the drafting zone transversely to the conveying direction toward the side facing away from the threading slot. This arrangement accommodates restarting of the drafting arrangement without the sliver condenser interfering with the sliver supplied to the last drafting zone.

Abstract: A web of fibers delivered from a drawing machine is assembled into a sliver which passes into a guide duct, then passes between takeup rollers into a can coiler. Downwardly inclined air-escape holes are pierced in the wall of the guide duct in order to discharge the air entrained by the sliver. There is consequently no swelling of the sliver on the delivery side of the takeup rollers and no pressure rise towards the guide duct inlet, thereby facilitating the introduction of the web into the duct.

Abstract: Draft apparatus for use with a pneumatic high speed spinning frame. At least one pair of sliver compressing member are disposed on the sliver path. One of the sliver compressing members has a circumferential recessed groove for receiving the sliver and the other sliver compressing members has a circumferential rib adapted to be fitted into the recessed groove.