Abstract: At least one circular ridge, which projects upwardly beyond the surface of the navel of the thread delivery device, is placed in the path of yarn being removed from the peripheral wall of the spinning chamber and delivered to the throat of the navel. The ridge has a height of at least 0.003" and is radially so located in proximity to the edge of the navel that the yarn being formed and lifted from the wall of the spinning chamber first engages the navel at the ridge.

Abstract: A heating device for heating an advancing yarn, which has a groove in which the yarn advances along a zigzag line. To advance the yarn in the groove, yarn guides are provided, which are arranged spaced apart from each other on a common carrier so as to form a unitary structural unit. The structural unit is inserted on the bottom of the groove, and rests against the side walls of the groove. The yarn guides are configured as pins.

Abstract: A spinning apparatus having a nozzle (n1) that exerts the actions of a rotating air current on the fiber (f), a hollow spindle (s1) and a fiber introduction member (e2) positioned opposite the inlet end part (s1") of the hollow spindle with a fiber guide member (E) arranged with a fiber guiding surface (e9) twisted in the rotation direction of the air flow and the fiber introduction member (e2) projecting from the fiber guide member toward the hollow spindle. The end part of the guide member (E) may be formed into a flat or a curved shape whereby a spun yarn with improved fiber evenness and having higher strength, a round cross section, a better exterior and resembling blend yarn which differs from core yarn, can be spun. Furthermore, improvements in the spinning properties and success rate of yarn piecing can be realized.

Abstract: A yarn withdrawal navel for an open-end spinning apparatus is provided with a ferromagnetic locating surface. This is used for the purpose of coupling to a mounting, which has at least one permanent magnet. The yarn withdrawal navel and the mounting have abutment surfaces which are configured to vary the magnetic mounting effect on the navel as a function of the relative rotation position of the navel and the mounting.

Abstract: An apparatus is provided for stranding together stranding elements, such as electrical and/or optical transmission elements. The apparatus includes a stranding disk and an elongated rotating accumulator for feeding the elements through the stranding disk, which gathers the elements into a cable. The rotating accumulator has a plurality of longitudinal chambers for accommodating respective elements. The chambers are radially open either inward or outward relative to the longitudinal direction, according to different embodiments of the invention. The invention also provides associated methods of stranding with such devices.

Abstract: In a spinning apparatus including a rotatable spindle carrying a package for receiving a yarn from a yarn guide which is arranged in axial alignment with the spindle, a tubular element surrounds the package and the spindle and is floatingly supported by magnetic bearings and a second yarn guide is arranged so to be rotatable within the tubular element and receives the yarn for guiding it onto the package with a winding speed corresponding to the rotational speed difference between the spindle and the tubular element and sensors are arranged adjacent the tubular element for sensing any axial deviation of the tubular element from its desired position which axial deviation is taken as a measure for the yarn tension forces.

Abstract: A method for optimizing the spinning geometry of a spinning machine in which the lengths of the path segments between the drafting output and rolls and the yarn guide, between the yarn guide and the balloon constricting ring, between the balloon constricting ring and the traveller, or other angles are controlled in response to the yarn break frequency and/or spinning force and, when necessary, the spindle speed is also controlled to minimize the spinning force. The system can use a fuzzy logic.

Abstract: A device for the reverse-twisting of stranding elements (4), comprising a stationary guide disk (1) and a twisting disk (2) located at a distance from the guide disk and able to rotate around its axis. At least one filament-shaped, tension-proof support element (7) is located between the guide disk (1) and the twisting disk (2). At least one holding element (5) is mounted on the support element (7) and is located at a distance from the guide disk (1) on one side, and from the twisting disk (2) on the other. The holding element (5) contains axial passage holes (6) for the stranding elements (4). The ends of the support elements (7) are affixed in holders (9), which are able to tilt and/or rotate with respect to the twisting disk (2).

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 spinning apparatus for producing a spun yarn by using swirling air currents to twist a non-twisted short staple fiber bundle drafted by a drafting unit. A nozzle block having at least one nozzle provides a swirling air current that acts upon the fiber bundle. A fiber bundle passage is defined by the nozzle block and a needle holder having a substantially central, longitudinal axis and a guide surface that twists relative to the longitudinal axis. A guide member associated with the needle holder projects toward the inlet of a hollow spindle.

Abstract: An apparatus to reverse-twist cable elements in the discharge direction, while at the same time the resulting twisted discharge is taken up in a storage path includes a mandrel for expanding the cable elements prior to the twisting thereof in the discharge direction.

Abstract: A guiding bow (1) for an elongated element (3) in a twisting or winding apparatus. At least part of the length of the guiding bow (1) has a transversal cross-section which is streamlined. The core (5) of the guiding bow may be made of a load carrying material, the sheath (7) of a synthetic material.

Abstract: A two-for-one twisting spindle has a protective pot with an upper edge and a bobbin carrier positioned in the protective pot for receiving two bobbins to be placed atop one another. A thread inlet tube extends axially through the bobbin carrier for receiving a first and a second thread withdrawn overhead from the bobbins. A thread guide ring is rotatable about the axis of the spindle. The thread guide ring has an eye for guiding one of the first and second threads withdrawn from the bobbins to the thread inlet tube, wherein the other of the first and second threads is guided about the periphery of the thread guide ring. A bristle ring is connected to the upper edge of the protective pot, the bristle ring having radially inwardly oriented, elastic bristles along which bristles the threads pass before entering the thread inlet tube.

Abstract: Flat filaments or ribbons are deflected by a system of sheaves to converge the filaments to closing stations proximate to points at which the filaments are tangentially applied to helical surfaces of a central cylindrical core member. Successive sets of filament deflection sheaves stack the filaments into bundles or stacks which can be separated by spacer elements which are applied to a smooth core or the filaments can be inserted into helical grooves or slots in the core. Preferably, adjacent filaments forming each stack are guided to prevent contact or totally eliminate sliding friction until just prior to application in the core. The apparatus and method can be used to produce optical fiber cables, high pressure flexible composite pipes and the like in which the flat ribbons can be wound either within helical grooves formed within the core or about the cylindrical surface of a smooth core.

Abstract: A spindle for manufacturing a yarn has a spindle body for receiving a fiber supply bobbin from which a fiber is removed radially outwardly to form a fiber balloon and guided to a centering point above the spindle body. A spindle rotor for rotating the spindle body has a central axis. A supply device for introducing a flowable medium into the space limited by the fiber balloon is provided. The supply device has an inlet line with an outlet opening. The inlet line has a section adjacent to the outlet opening extending at least directly upstream of the outlet opening coaxially or parallel to the central axis. At least a portion of the section is rotatable about the central axis and has a fiber guide tube comprising a first end that extends coaxially from the portion and a second end that extends radially from this portion.

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 cooling apparatus of a high speed false texturing machine in which a so-called surging phenomenon is prevented, yarn breakages are not increased, unevenness in yarn dyeing does not occur, and deterioration of crimp characteristics in obtained textured yarn is prevented. A false texturing machine includes a false twisting device (6) for imparting twists to a yarn (2), a heating apparatus (3), disposed upstream from the false twisting device (6), for heat setting twists that run back along the yarn (2), and a cooling apparatus (4, 5), disposed between the heating apparatus (3) and the false twisting device (5), for cooling the yarn. The cooling apparatus (4) has a plurality of partial cooling plates (8). A yarn pressing member (9) serves to insert the yarn (2) into a space between the adjacent partial cooling plates (8) beyond a common contacting line of the adjacent partial cooling plates (8).

Abstract: A yarn lap preventor for deflecting a parted yarn end away from an enlarged diameter area of a rotating take-up shaft of the open end spinning machine, particularly of the type for forming cylindrical yarn packages. The yarn lap preventor is preferably integrally molded plastic including a body portion and a mounting arm portion extending radially outwardly from the body portion. The body portion of the yarn lap preventor includes a tapered edge which is positioned adjacent the enlarged diameter area of the take-up shaft and preferably in closely spaced apart relation from where the advancing yarn leaves the enlarged diameter area. The body portion of the yarn lap preventor also preferably includes a shield portion which extends along a circumferential portion of the enlarged diameter area.

Abstract: A false twist crimping machine has a secondary heater positioned downstream of the false twist zone, which comprises a slightly curved, upright, externally heated tube. The upright heating tube has a downstream end which connects with a horizontally directed transport tube which extends laterally across the service aisle of the machine adjacent the floor, and to a side frame which mounts the package take-up system. The inside diameter and length of the transport tube closely correspond to the inside diameter and length of the heating tube.

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 spindle for manufacturing yarns has a spindle rotor with a central axis. A fiber guide duct extends substantially from the central axis radially outwardly for guiding a first fiber radially outwardly. The first fiber, after exiting the fiber guide duct, is guided under formation of a fiber balloon to a centering point that is located on an extension of the central axis of the spindle rotor. At least one inlet line that extends substantially radially toward the fiber balloon is provided for introducing a flowable medium into a space limited by the fiber balloon.

Abstract: In the case of a spinning machine comprising several spinning stations for the spinning of slivers fed in cans into yarns, drivable transport belts are provided which transport the slivers between the cans and the spinning stations. When bridging differences in height with respect to the horizontal line, the transport belts are arranged in such a sloped manner that the slivers rest on the transport belts because of their own weight. Lateral coverings against damaging air flows are preferably assigned to the transport belts.

Abstract: An apparatus for making a yarn comprises two pairs of conveying rollers for defibrating at least one fibrous roving, two juxtaposed, closely spaced twisting drums, which succeed the conveying rollers and define a generally triangular twisting space, to which suction is applied and withdrawing rollers for withdrawing the yarn made from the fibers twisted in the triangular twisting space. To ensure desirable spinning conditions in such an apparatus, it is proposed that the two pairs of conveying rollers, which pairs immediately succeed each other, the conveying rollers of the receiving pair, which are remote from the triangular twisting space, define a clamping nip, form a delivering pair of rollers are nearer to the triangular twisting space and defining a guiding nip of rollers permits a slip relative to the fibers, and delivering pair are arranged to be driven at a higher peripheral velocity than the conveying rollers of the receiving pair but not in excess of the velocity of yarn formation.

Abstract: In a drawing false-twisting method, which draws a twisted yarn, heat-sets the drawn and twisted yarn, cools the yarn by making the yarn travel in contact with the surface of the guide groove of a cooling plate and untwists the yarn to obtain a textured bulk yarn, the yarn is moved laterally to spread the oil transferred from the yarn to the surface of the guide groove.

Abstract: A yarn draw-off pipe for the withdrawal of a yarn, e.g. from a spinning rotor. To achieve easier replaceability of the yarn draw-off pipe, the latter is provided with an inclined surface upon which an elastic element bears to retain the yarn draw-off pipe. The inclined surface is placed in relation to the axis of the holder of the yarn draw-off pipe in such manner that the force of the elastic element exerted radially to the axis produces a force acting in axial direction, so that the yarn draw-off pipe is securely held in its holder.

Abstract: A cable manufacturing method comprising the steps of arranging a closing die and a plurality of panel plates in this order, on a pass-line having a curved zone and a linear zone, from the side of a front end of the pass-line, inserting all wires, to be stranded, through an opening of the closing die, and inserting each wire through a hole formed in a corresponding one of the panel plates, guiding the wires such that the wires are substantially parallel with one another and each wire is loose of the panel plates, rotatably supporting the panel plates, respectively, and passing each wire through the curved zone and the linear zone while rotating the panel plates in the same direction, thereby stranding the wires with a large pitch so as not to plastically deform the wires.

Abstract: A process and apparatus for the control of a yarn storage mechanism on a spinning mill machine is proposed. When yarns are wound up it may occur, e.g. in forming conical bobbins, that more yarn is delivered than is wound up. The yarn which is briefly in excess is here taken up in form of a yarn loop by a compensator arm which intervenes transversely in the course of the yarn and is mounted so as to be capable of swivelling. According to the invention it is proposed that the compensator arm be subjected to the force of a spring which acts upon it increasingly as the yarn loop decreases, and in that the force of an additional elastic element acts upon the compensator arm as further excursion occurs.

Abstract: Excess liquid is removed from a fast-moving thread, in that the latter is deflected, so that the liquid is hurled off, the hurled off liquid is removed from the thread, in that the thread is passed through a closed chamber, where a vacuum is produced in order to facilitate liquid evaporation and in that the thread is led through a narrow gap, so that the layer directly surrounding the thread and travelling therewith is peeled off. The combination of these drying effects constitutes one process stage. Advantageously, this process stage is performed several times in direct succession, so that in the case of a thread-protecting, small deflection angle a good thread drying can be achieved. The process is performed by an apparatus comprising several chambers (K.1-3) connected in series in the thread movement direction, the thread being deflected at the inlet and/or outlet with respect to each chamber by a deflection element (U.1-4) and passes through a narrow gap (S.1-). The chamber walls (20.

Abstract: A spinning arrangement in which the working elements for the processing of fiber material are arranged within an adjustable climate-controlled zone. The climate-controlled zone can be adjusted in such a manner that the fiber material fed to the working elements has the tendency to supply humidity to the ambient air of the climate-controlled zone. Before the feeding, particularly when deposited in a can or on a roving bobbin and/or on the transport path to the working elements, the fiber material is surrounded by air whose climate differs from the climate in the adjustable climate-controlled zone of the working elements. During the processing, the fed fiber material and the working elements are each in a different climatic condition that is optimal for the processing.

Abstract: A draw texturing machine comprises a first heater for heating a yarn, a false twisting device for imparting twists to the yarn, and a cooling plate, disposed between the first heater and the false twisting device, for cooling the yarn which has been heated by the first heater and for inhibiting vibration of the yarn so as to allow the yarn to run in a stable manner. The cooling plate is provided with a yarn threading groove member having a bottom portion with which the yarn runs in contact and wall portions connected to the bottom portion to form a concave, downwardly directed opening. The wall portions of the yarn threading groove member are provided with a plurality of holes, and the bottom portion of the yarn threading groove member is provided with no holes.

Abstract: A ring spinning apparatus, which comprises a rotatably drivable spindle, which is adapted to carry and to be non-rotatably connected to a bobbin, a guide ring, which is coaxial to the axis of the spindle and serves to guide a traveler, which is adapted to revolve on the guide ring and constitutes a yarn guide, and an annular deflecting guide, which surrounds the bobbin and serves to deflect adjacent to the guide ring the yarn which is approaching the traveler. That ring spinning apparatus is characterized in that the projections of that yarn portion which is approaching the traveler from the deflecting guide and that yarn portion which is departing from the traveler in a plane that extends through the axis of the spindle include an angle that is smaller than 90.degree. and the projections of said approaching and departing yarn portions in a plane that is at right angles to the axis of the spindle include an angle that is larger than 90.degree..

Abstract: Process allowing the cooling of a yarn (2) in motion at the exit from a heater (5) before it passes through a treatment member such as a false twist spindle (7), consisting in passing the yarn inside a tube (10) through which a current of cool air or other gaseous product passes, the current of air being directed in a direction opposite to the direction of advance of the yarn. It is characterized in that during this cooling phase, the yarn is held in contact with a support or guide surface arranged coaxially inside the tube (10) through which the current of air which flows in the space contained between the external tube (10) and the guide surface.

Abstract: In a spinning machine having a plurality of spinning units arranged next to one another and having a movable servicing apparatus which can be applied to the individual spinning points for the piecing, it is provided that the servicing apparatus has a splicing device with a splicing duct directed toward the spool package. A yarn storage device is arranged approximately as an extension of the splicing duct and a guiding element of the servicing apparatus which transfers the newly spun yarn in the area of the yarn storage device can be brought between a device for the withdrawal of a yarn and devices for picking up this yarn which can be moved into the area between a spool package and the splicing device.

Abstract: A process for introducing a fiber sliver into a fiber processing machine which has an openable sliver feeding device and a sliver introduction funnel and a sliver injector, comprising the following steps: opening the openable sliver feeding device, grasping the leading end of the sliver pneumatically into and through the sliver introduction funnel and into the opened feeding device and closing the sliver feeding device on the sliver. The invention also includes a device for carrying out the process.

Abstract: An apparatus for severing a yarn and processing the resultant end of the separated yarn comprising a controllably rotatable abrasive element (1) disposed between two yarn-tensioning mechanisms (2,3) which hold the yarn in position and under tension for engagement with an abrasive surface of the abrasive element. The abrasive element (1) is mounted stationary with respect to the yarn-tensioning mechanism (2,3) such that the yarn 4 can be wrapped around the abrasive element (1) at a predetermined angle of wrap (.alpha.).

Abstract: Fiber optic filaments or ribbons are deflected by a system of sheaves to converge at final filament deflection sheaves which direct the filaments along the longitudinal direction of an assembly table. Successive sets of filament deflection sheaves stack the filaments into bundles which are separated by spacer elements which are likewise guided to the assembly table. Sensors at the final sheaves monitor the tensions in both the filaments and separators and a controller is used to adjust the tensions to compensate for frictional variations upstream of the final sheaves. The table is positioned at an angle to the machine axis so that the stacked filament bundles and separators can be wound about a rotating core by being drawn along the table by the rotating core for staggered and tangential application of the filaments about the core at the downstream end of the table.

Abstract: In a textile spinning apparatus a yarn joining device (12) begins to work to join the end of a newly spun yarn with a retrieved yarn end after the breakage of a yarn (2). During the joining process draw-off rollers (3) continue, to supply the yarn (2) such that yarn storage members (4, 11) have to be implemented during the joining process. In order to draw the yarn (2) into the interior of the yarn storage members (4, 11), air suction is applied in a known manner. After the yarn (2) joining process is completed in the yarn joining device (12), the yarn storage members (4, 11) are successively emptied by use of an acceleration in yarn draw off speed effected by a yarn storage draw-off roller (7) and an auxiliary friction roller (14).

Abstract: A cabling machine for laying optofibers, cables or the like in an oscillating, wavy path around a smooth pull-reliever, or into grooves having an oscillating, wavy shape which are extruded around a pull-reliever, i.e., so-called S/Z-cabling. The machine includes a pull-reliever pulling-off device, a braking capstan, a fiber reeling-off device, and an S/Z-bench (6) for laying the fibers around the pull-reliever. When used with a grooved pull-reliever (2), a laying-on tube (11) of the S/Z bench (6) is connected to a transmission (14), and a sensor (17) is connected to the transmission and functions to detect rotation of the laying-on tube (11) caused by the oscillating waveshape of the grooves. The reeling-off device (1) and the braking capstan (3) are controlled to cause the pull-reliever (2) to rotate to perform a corrective function.

Abstract: In the case of a spinning machine comprising spinning stations which are preferably arranged on both sides of the machine, depositing sites for several rows of cans are assigned to each side of the machine which contain the sliver to be spun. Delivery rollers are used for the transport of the slivers between the cans and the spinning stations. Stationary guiding surfaces are arranged between the delivery rollers for supporting the slivers. The guiding surfaces are spaced from a tangent line connecting the delivery rollers. The guiding surfaces are mounted to be selectively adjustably movable in certain preferred embodiments.

Abstract: A production apparatus for spinning ring spinning filaments and staple compound slivers into compound yarns wherein the main improvement comprises altering the three-line roller draft system to a four-line roller draft system, combining multi-filaments with short staple fiber clusters and then the resultant being twisted to form compound ring yarns that are superior to the conventional ring yarns. It indeed achieves the maximum practical value and is adaptable to industry uses.

Abstract: A reverse stranding apparatus for the reverse stranding of conductors. The apparatus comprises a stationary divider plate, a twisting plate rotatable in different directions, and a central element disposed between the parts, and peripheral tubes surrounding the central element, the central element and the peripheral tubes being pressed against each other at least during the twisting step of the conductors, and the conductors to be stranded being adapted to pass through at least the peripheral tubes. To allow high speeds of rotation, the peripheral tubes are connected substantially for their entire length to the central element by a substantially radial part.

Abstract: A spindle is mounted to a frame for rotation about the spindle axis. A core yarn package of elastic core yarn is held stationary on the spindle. Elastic core yarn is withdrawn from the core yarn package in a direction substantially along the spindle longitudinal axis. A nonelastic covering yarn is drawn from a supply package, through the spindle and along a confined yarn guide passageway from the spindle guide passageway outwardly, upwardly and inwardly around and in spaced relation to the core yarn package for confining and guiding the covering yarn, and then into wrapping engagement with the withdrawn core yarn to form a corespun yarn.

Abstract: A pneumatic spinning apparatus comprises a nozzle block having a nozzle which gives a whirling air stream to a fiber bundle coming out of the draft device, a spindle having a fiber bundle passage, a guide member with its forward end protruding into a spindle inlet port, and an introduction tube having a fiber bundle passage which has been separated into a plurality of parts and fixed at the nozzle block inlet side.

Abstract: In the case of an arrangement for pneumatic false-twist spinning, it is provided that a sliver is divided in the area of the delivery roller pair of a drafting unit, is divided into two partial slivers. Edge fibers are spread away during and after the division. The divided slivers are then jointly or separately pneumatically false-twisted and are wound up as an individual yarn, as two separate yarns or as a double yarn.

Abstract: A method for the doffing of a yarn winding machine which is composed of several side-by-side winding stations, and wherein identical packages having the same build and yarn length are produced on the several stations. The doffing procedure includes the simultaneous cutting of the yarns of all of the stations at the end of the winding cycle, the replacing of the full packages with empty bobbins, the threadup of the empty bobbins, and the simultaneous commencement of the yarn traverse at all of the stations.

Abstract: In the ease of a spinning machine for the spinning of yarns from slivers which are fed in cans on a platform above the spinning machine, the slivers are conveyed from the cans to the spinning stations by conveyor belts. Several spinning stations are combined to a machine section, and a support is provided between two machine sections respectively on which the guide rollers of the conveyor belt are held. In the area of the center plane of the spinning machine, the support projects upwards through the platform.

Abstract: A cabling machine is disclosed for laying optofibers, cables or the like in an oscillating, wavy path around a smooth pull-reliever, or into grooves having an oscillating, wavy shape which are extruded around a pull-reliever, i.e., so-called S/Z-cabling. The machine includes an S/Z-bench (6) which includes an aligning mechanism (13) which grips and guides the pull-reliever (2), and a motor (15) which imparts an oscillating, rotational movement to the aligning mechanism via a transmission (14). When used with a grooved pull-reliever (2), a laying-on tube (11) of the S/Z bench (6) is connected to the transmission (14) and a sensor (17) is connected to the transmission and functions to detect rotation of the laying-on tube (11) caused by the oscillating waveshape of the grooves. A reeling-off device (1) and a braking capstan (3) of the machine then cause the pull-reliever (2) to rotate to perform a corrective function.

Abstract: In a ring spinning frame provided with two parallel alignments of bobbin hangers, a plurality of roving guides is arranged in an alignment at an intermediate position between the two alignments of bobbin hangers, wherein a first group of roving guides is formed by roving guides alternately positioned in the roving guide arrangement and a second group of roving guides is formed by the remained roving guides thereof, an improved creel mechanism for relatively displacing the first group of roving guides and the second group of roving guides whereby a first intervening space between two adjacent roving guides and a second intervening space between two adjacent roving guides are alternately formed along the alignment of the roving guides, wherein the first intervening space ensures a free passage of a full packaged roving bobbin but the second intervening space does not permit a free passage of the full packaged roving bobbin, the above-mentioned formation of two intervening spaces being created alternately, at ea

Abstract: In the case of a spinning machine having several spinning stations for the spinning of slivers into yarns, the slivers are transported from cans to the spinning stations by transport devices which comprise transport belts. The transport belts are provided with tension inserts which are covered by the closed smooth lateral edges of the basic material of the transport belts.

Abstract: A false twist crimping machine is disclosed which is adapted for processing synthetic yarn, and which includes a novel .[.means.]. .Iadd.structure .Iaddend.for the thermal treatment of a yarn at high processing speeds of 1,200 meters per minute and above, and without increasing the overall size of the machine. The yarn thermal treatment .[.means.]. .Iadd.structure .Iaddend.includes a yarn heating plate and a yarn cooling plate. The yarn heating and cooling plates preferably each include a curved yarn path guideway to provide efficient and reliable yarn contact of the advancing yarn with the curved guiding surfaces, and at least the yarn cooling plate extends above a service aisle provided between the central frame of the false twist crimping machine and a yarn supply creel spaced from and extending parallel to the central frame.