Abstract: The present invention is directed to a drawframe having a sliver delivery device and a computer part for maintaining a predetermined quality of sliver, wherein there is a predetermined overproduction from a card and/or a drawframe relative to a spinning machine. The arrangement temporarily decreases production to temporarily compensate for the overproductions. The sliver which is produced during the decrease in production may be delivered to a separate can.

Abstract: The combing machine is provided with a plurality of combing devices for delivering a plurality of combed slivers as well as a drafting system for receiving and drafting the combed slivers for delivery to a can press. A measuring device is provided to measure the thickness of the sliver delivered to the drafting system and to deliver a signal to a control unit which, in turn, regulates the drafting of the sliver within the drafting system in accordance with the received signal in order to obtain an evened combed sliver.

Abstract: A textile machine for processing textile material is provided having a control and drive unit and a feeding device for feeding textile material drawn from storage means allocated to the feeding device. The textile machine further includes a delivery device for delivering drawn-off textile material to a receiving container. The feeding device of the machine has an independent feed control unit associated therewith for independently controlling the operation of the feed apparatus in a non-dependent relationship with the processing machine control unit. With this arrangement, a continuous supply of textile material is supplied to the processing machine without the feed device control unit being dependent upon external commands. The feeding device control unit is completely responsible for the initiation and operation of the continuous textile material feeding process.

Abstract: In a method and an apparatus for producing continuous slivers of improved uniformity, open-loop or closed-loop control of the production process is corrected in dependence upon the absolute air humidity measured near the installation. Long-term variations in sliver weight, which have been found to correlate with the absolute air humidity, are obviated.

Abstract: The delivery roller pair are made with continuous uninterrupted cylindrical surfaces so that air flows on the input side converge in the nip and then flow from the central zone thereof to opposite end zones. In addition, the air flows on the output side flow from the end zones towards the central zone. The suction nozzle is disposed downstream and in alignment with the nip so as to receive the fiber material for spinning into yarn.

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 drafting system and autoleveller are arranged such that the "tongue" roller and the "grooved" roller of the sliver sensor ahead of the first drafting rollers serve to measure the thickness of the sliver therebetween, and their output signal is used, subject to a time delay, to vary the draft ratio in the subsequent drafting means. The autoleveller throughput speed is adjustable and the time delay in the draft ratio variation is automatically adjusted in response to the speed selected.

Abstract: A drafting unit for a spinning machine has several stub shaft supported bottom rollers which are each assigned to a spinning point and which are in driving connection with drive shafts extending through in longitudinal direction of the machine. To facilitate servicing operations, the bottom rollers are held by means of support components which are detachably mounted at a machine frame which accommodates the drive shafts.

Abstract: The textile machine, for example a spinning machine, comprising at least one drawing system consisting of a plurality of runs, such as pairs of rollers and the like. At least two such runs each have a cylinder having markings which are detected by a sensor of a separate pulse generator. The output signal S.sub.1 of one pulse generator is applied to a count input of a counter while the output signal S.sub.2 of the other pulse generator is applied to a reset input of the counter. The counter can be reset by the output signal S.sub.2 only during a preset reset time window. When the counter has counted to the end of this time window, the counter furnishes a trigger signal S.sub.3 for an alarm and the like.

Abstract: In the case of a spinning machine having a plurality of drafting units, which each contain several top rollers and bottom rollers, and in which the bottom rollers are each constructed as roller sections which can be individually separated form a central drive, it is provided that the bottom rollers are constructed as hollow cylinders which are disposed on stationary shafts.

Abstract: The ring spinning machine has separate drives for the spindles, the delivery rollers and the other rollers of the drafting device. The inverters of the corresponding drive motors are fed from a D.C. intermediate circuit so that all the drives stop simultaneously, thus obviating thread breakages. A disc brake is electrically coupled to the intermediate circuit to prevent rotation of the delivery roller of the drafting device.

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: In an arrangement for interrupting the operation of an individual drafting frame at a spinning machine, devices are provided for reducing the contact of a sliver with the bottom rollers and particularly for lifting the sliver off the bottom rollers which are operative when the pressure rollers are lifted off the bottom rollers.

Abstract: Fiber material to be spun is presented to drafting equipment in the form of a fiber sliver and is subjected to pre-stretching and main stretching in such drafting equipment. While being stretched, the fiber sliver is gathered together to a minimum width which amounts to at least 1.5 times the diameter of a torsion device to be used with the sliver. After being thus gathered together, the fiber sliver is not further gathered together before having torsion imparted thereto while such diameter is maintained. The width of a condenser situated upstream from the main stretching field amounts here to at least 1.5 times the diameter of a pneumatic torsion device situated downstream from such field. The injector component and torsion component of such torsion device are of identical diameter, from their intake opening to their outlet opening. In this way, hairy and soft yarns, similar to ring yarn, are produced.

Abstract: This invention relates to a filtration roving with the cross section of the roving exhibiting portions more tightly twisted than the remainder of the roving.

Abstract: A relatively heavy sliver creel frame is suspended from an overhead support by relatively stiff wires whose angle to the creel in combination with the weight of the creel minimize horizontal creel sway. A pair of additional stabilizing links connect the creel to and cantilever it from a support structure spaced from the floor region over which the creel is suspended.

Abstract: A drafting assembly whose lower belt is laterally guided by a guide element having a pair of side walls joined by a web and more unitarily from a synthetic resin. The web lies outside the loop of the lower belt and in the upper belt or adjacent the lower belt. The element is held against lateral movements by abutments which can be lateral flanks of the rollers or a guide element for the upper belt. The element is prevented from twisting or rotation by engagement with a stationary turnover rail over which the lower belt passes.

Abstract: Dust extraction apparatus for a drawframe of the type comprising a pair of table-like creels (3), on each of which are disposed a set of bollards (5) arranged such that multiple slivers of cotton can be drawn in parallel relationship into a set of differential drafting rollers (2), the dust extraction apparatus comprising a plurality of air inlet vents positioned, for example, on each creel table at or around each bollard and at or around each guide-fork (20), and further air inlet vents, for example, at or around each set of differential drafting rollers, each vent being connected to outlet ducting (6, 9, 12) providing substantially constant suction and incorporating a filter adapted to continuously remove particles of dust etc. from the air within the ducting at a substantially constant rate.

Abstract: The arrangement conveys cans which deliver and receive textile material, between machines delivering such material and machines which are substantially of the same type but use such material, along a closed transport or conveying path. The conveying path is of a structure comprising sections which extend parallel to each other including a siphon-shaped stand-by section containing parallel legs. Using such sections there is rendered possible a space-saving arrangement and simultaneously ready accessibility to the different sections of the conveying path and the machines for operating the machines and eliminating faults and malfunctions at the machines and the sections of the conveying path.

Abstract: Spinning machine in which the upper rollers of the drafting units are arranged at pressure arm assemblies, whereby each pressure arm assembly has a main arm and an operating lever which is positionally arranged above the main arm and radially movable. To each work location of the machine are assigned signal lights for indicating disruptions at the work location. For optimum visibility from distant locations, the indicator lights are provided at the operating levers.

Abstract: A roving of short fibers is converted to a continuous twisted thread by a device which grips the roving between the facing teeth of two endless belts, and an acoustically generated transverse air jet is directed at the side of the roving, at a fixed point situated between the two belts. The direction of the air jet is reversed each time the fixed point is passed either a pair of facing teeth, or the midpoint in the gap between two successive pairs of facing teeth.

Abstract: A method and apparatus for straightening fibres in a sliver comprises subjecting the sliver to sliding frictional contact with a foraminous surface through which an airflow passes, the sliding contact having the effect of both straightening the fibres in the sliver to orientate them, and straightening the hooked ends of any fibres in the sliver, and the influence of the airflow serving to remove dust and/or trash from the sliver.

Abstract: The present invention provides a draft roll arrangement in a spinning frame in which the apron bottom roll is longitudinally divided into two sections at a location along its length selected to be within a range for which torsion of the apron bottom roll does not pose a problem in spinning, and in which the respective bottom rolls are operatively connected to one another in such a manner that one of the ends of the back and front bottom rolls and one apron bottom roll section are connected to a driving source and the drive for the other apron bottom roll section is derived through the back and front bottom rolls. In a preferred embodiment, the respective apron bottom roll sections are associated with rotational angle sensors whose output rotational angle signals are supplied to a control unit. When the difference in the rotational angle has exceeded a preset value, an output signal indicating such state is issued from the control unit.

Abstract: An apron for a draft apparatus being suitable for use with a pneumatic high speed spinning frame. The apron includes a front side rubber layer, a reverse side rubber layer adhered to the front side rubber layer and core cords interposed between the two rubber layers. A ratio of thickness between the front side rubber layer and the reverse side rubber layer is set to a value within a range from 3:7 to 1:9.

Abstract: A transport system for transporting laps wound on tubes in spinning preparation. The laps are transported above head height by carriers or supports movable along transport rails and are raised and lowered by means of carrier rails. The transport rails and the carrier rails are components or parts of a closed, endless circulation path or track. Each carrier has a holder for the lap and a holder for the empty tube. The invention provides the advantages that no special transport system is required for return of the tubes. Moreover, transport of individual laps or of a group of such laps is possible and an ordered and simple circulation path is provided during transport of these elements or parts. Furthermore, the system can readily be automated.

Abstract: A draw frame for spinning machine is provided with a blocking mechanism movable into a position between the upper and lower feed rollers in the event of yarn breakage, to lift the roving from contact with the driven rollers. The blocking member is mounted on a rail, extending parallel to a load arm on which the upper rollers are mounted. Both load arm and the bearing arm rail are swivelably mounted. Each of the bearing rails are arranged so that they are weighted by the supporting arm, when placed in the operating position, by a resilient member acting on a connecting member between the bearing rails.

Abstract: A drawing frame for a spinning machine is provided with a blocking mechanism movable into a position between the upper and the lower feed rollers in the event of yarn breakage, to lift the roving from contact with the driven roller. A roving holder facilitating the holding of the tuft end of the roving between the drawing and outlet rollers is provided. This latter apparatus is coupled to the means for actuating the blocking mechanism for synchronous operation and is provided downstream of the inlet roller. It comprises a table extending beneath the roving and a rotatable shaped arm above the roving which arm is movable by the switching mechanism to simultaneously hold the front end of the roving.

Abstract: A drawing frame has an electric driving motor (M) and a main shaft (H), which is drivingly connected to several driven rollers (W1-W4, W1'-W4') in the two draw heads (11) of the drawing frame. Between the motor (M) and the main shaft (H) are arranged a belt adjusting gear mechanism (V and HO) and a clutch (K). The transmission ratio of the adjusting gear (V and HO) is automatically gradually reduced from a maximum value to the operating value, so that the main shaft (H) is smoothly accelerated.Cut-off devices are provided for automatically stopping the frame when a disturbance of any kind occurs. The cut-off devices switch off the electric motor (M), release the clutch (K) and actuate a brake (B) which acts upon the main shaft (H), and also an adjusting member of an adjustable disc (V) of the belt-adjusting gear (V and HO). The brake (B) can be relatively small, as it does not have to decelerate the uncoupled motor (M).

Abstract: Slubbing, which is to be drawn, is pulled from cans (25), which are mounted behind a drawing frame. The frame comprises a double draw head section with devices for filling two cans (7 and 8), which are situated at respective filling stations. The filled cans (7 and 8) are then automatically replaced by empty cans (2): A slide (15 and 16) moves two empty cans (2) rectilinearly, counter to the working direction of the draw heads, into the filling stations and simultaneously moves the filled cans (7 and 8) rectilinearly in the same direction into two removal stations (13 and 14). Thus, the replacement of the cans (7 and 8) proceeds very rapidly and with a minimal gap between the filled cans (7 and 8) and the empty cans (2), which avoids the need for the frame to be stopped. A device (M and H) for controlling and driving the frame is accommodated in a rear part (6) of the frame housing which is situated on the side of the removal stations (13 and 14) facing the filling stations (7 and 8).

Abstract: A method of unrolling and piecing a lap and a lap drive for combing machines, lap drafters and similar machines having a driven pair of support rolls for supporting the lap to be unrolled for processing. One of the support rolls is uncoupled from its drive for unrolling and for piecing the fiber layer.

Abstract: An improved gill box with rotating heads, which comprises a plurality of needles acting on an assemblage of slivers fed substantially continuously and consists of a feeder group, a group which controls the fibers and is constituted by two heads with combs superimposed one above the other and rotating in cooperation, and a drawing group.

Abstract: A method and apparatus for transmitting a driving power in a drafting device of a spinning frame. In the drafting device comprising a pair of back rollers, middle rollers and front rollers arranged in order, the driving power for the middle rollers is transmitted through a transmission passage different from a transmission passage for transmitting the driving power for the back rollers and front rollers.

Abstract: A drive system for a drawframe for a rove drawing process in which the drawframe includes at least one pair of feed rollers, at least one pair of sleeves, at least one pair of drawing rollers, and at least one swinging arm on which one feed roller, one sleeve and one drawing roller of each pair is supported, the swinging arm being displaceable between an inoperative position and an operative position where the pair of feed rollers, pair of sleeves and pair of drawing rollers are engaged under pressure for rove drawing. The drive system includes a drive shaft and at least one displaceable friction clutch roller which is displaceable between an operative position to engage both the drive shaft and one of the feed rollers for transmitting drive from the drive shaft to the feed roller, and an inoperative position where it is disengaged from the feed roller, the friction clutch roller being displaceable into its operative position to allow progressive engagement of the drawframe at start up.

Abstract: A method and apparatus for blending a "primary staple" with a "secondary staple" wherein the weight ratio of the primary staple to the secondary staple is between 10,000:1 and 10:1 is disclosed. The secondary staple is continuously supplied to a blending machine (already working a primary staple) by drafting a textile roving. The drawn roving is then disintegrated into the secondary staple by an air flow amplifier. The air flow amplifier also supplies an air flow to transport the secondary staple to a blending machine, where it is blended into the primary staple.

Abstract: An apparatus for drafting and parallelizing strands of fiber comprising three side-by-side rolls nested in three side-by-side troughs which conform to and are adjacent the bottoms of the three rolls. The rolls are rotated in the same direction at sequentially greater speeds. The first two rolls include fiber-combing teeth, and the third roll is composed of a smooth, rubber-like surface. The fibers pass sequentially around the bottoms of the three rolls through a very narrow gap between the rolls and troughs to emerge in a parallelized, drafted condition. The unit may be incorporated into a no-twist yarn system as the sole mechanism for drafting and parallelizing the fiber, to form no-twist yarn in a continuous manner; or be used in place of conventional drafting system.

Abstract: An aqueous sizing composition, method of preparing same and sized glass fibers are provided that enables the production of sized glass fibers having improved filamentization. The aqueous sizing composition has one or more cross-linkable film formers, one or more organo silane coupling agents and about 2 to about 12 weight percent of an interaction product of an unhydrolyzed or partially hydrolyzed amino organo silane coupling agent and an epoxidized polar thermoplastic copolymer. The epoxy copolymer has about 2 to about 12 parts of monomer with epoxy functionality per 100 parts of copolymer. Also the epoxy copolymer has a glass transition temperature (Tg) of from -10.degree. C. to about 70.degree. C. The unhydrolyzed or partially hydrolyzed amino silane coupling agent is contacted with the epoxidized copolymer, where the copolymer has a percent solids in the range of about 15 to about 60 weight percent.

Abstract: Device for aligning and attenuating soft or brittle fiber mats employing a rotating vacuum roller for gently grasping the fiber mats under sufficient compressive force to hold the same without breaking or otherwise damaging the fiber mats.

Abstract: The invention contemplates a method for separating fibers fed in the form of fibrous material, wherein the material is pinched in the cross-section in such a manner that the pinching action is applied to fibers spaced from one another at a certain distance. Simultaneously, the velocity of fibrous material is substantially increased so that individual fibers are pulled out. An apparatus for carrying out the method comprises an outlet pair of rolls having an appropriately profiled cylindrical roll.

Abstract: Apparatus for textile fiber band or the like composed of staple fibers, wherein the fiber band is guided through a transport tube or duct and there is produced within the transport duct an air flow directed in the same sense as the feed or conveying direction of the fiber band.

Abstract: In a drawing device for sliver comprising two endless moving elements having cooperating working runs between which the sliver passes, at least one of the elements is constituted by a plurality of bars extending between a pair of parallel carriers (e.g. chains) and each bar has a convexly curved outer working surface from which penetration members, (e.g. needles) extend.

Abstract: A textile drawing machine has interchangeable drawing heads mounted between the feed rollers and the drawing rollers, to enable it to treat different types of textile fibres. The heads are readily replaceable in a frame of the machine and have support and drive members engaging support and drive members on the frame.

Abstract: The control system is constituted by a succession of elongate parallel control elements, made of elastomer, which extend in directions transverse to the direction of the path of the fibres to be controlled and which each have a work face and an opposite face provided with at least one longitudinal fixing rib engaged in a longitudinal slit of a tubular support part and terminated by a retention head in the said tubular support part, the drawing device including means for guiding, driving and orientating all the aforesaid tubular support parts, to ensure the displacement of the said control elements for the fibres while abutting against the other control system of the drawing device.

Abstract: The present invention provides an improvement in a fiber drafting assembly which includes an opening roll, the improvement wherein the assembly has a housing member extending about at least a portion of the circumference of the opening roll, the housing member being characterized by having a groove located interiorly thereof.

Abstract: In accordance with the invention, the breaking and stretching machines have pressure heads, each one being essentially constituted by two opposed complexes, upper and lower, each one of which includes at least two transmission chains of the Renold type which are meshed with two chain pinions (double, triple, etc) fitted on two strong parallel shafts that are supported by appropriate bearings attached to the lateral elements of the machine bedplate; those corresponding to the lower complex are fixed, while those corresponding to the upper complex are moveable, so that the latter complex may adopt, with respect to the other complex, two limiting positions; one of separation, which permits the introduction of the layer of fibres, and the other, where the elements approach one another, to be utilized during the work and in which the pressure can be adjusted.