Abstract: In textile machines fed with fibre slivers, such as e.g. drawframes, immediate stopping of the machine is required in case of a sliver breakage before or on the feed table. This requirement is fulfilled using the inventive stop motion apparatus quickly and reliably, by tilting a pan arranged beneath each normally running fibre sliver and which does not contact such fibre sliver. The reaction time of the stop motion apparatus can be shortened by providing a heavy body on, and movable with respect to, the pan, the body being e.g. in the form of a steel ball. Since the pan in its working position does not contact the normally running fibre sliver, slivers of improved quality are produced and contamination of the stop motion apparatus is avoided.

Abstract: An apparatus for separating fibre material from an air stream or current of a penumatic transporting system contains a filter or perforated drum internally of which there prevails a vacuum. The fibre material drops from the drum at a take-off zone or region, in the form of a fibre layer or mat, into a receiving container or the like. This fibre layer is then removed from the receiving container, by using a plunger, and deposited, in an outfeed or delivery duct or channel. The spacing of the fibre take-off zone at the drum from the bottom or floor of the container is limited to a value which avoids tearing of the fibre layer or mat. Jamming or clogging of fibre material when using a rotating filter or perforated drum is avoided, since the take-off of the dropping or outbound fibre layer from the filter or perforated drum is perfected cleanly throughout. There results the advantage that danger of fires and damage, caused by fibre jamming, are essentially precluded.

Abstract: With the creel for a spinning machine according to the invention at least two rows of rotatably suspended roving bobbins, which extend essentially in parallelism with respect to one another, are adjacently lined-up. Normally in ring spinning machines there are employed for such creels roving deflecting rods which extend horizontally in the longitudinal direction of the ring spinning machine. The rovings extending from the roving bobbins to the drafting arrangements are guided around the deflecting rods for the purpose of guiding the rovings. If the deflecting rod is located behind the bobbins, then insertion of the rovings about the rods is extremely cumbersome, and additionally, there exists the danger of damaging the rovings. If the deflecting rod is located further towards the front, then exchange of the bobbins becomes tedious. These drawbacks are eliminated with the invention in that a row of substantially rod-shaped holders is arranged behind the front row of roving bobbins.

Abstract: A bobbin exchange apparatus on a ring spinning or a ring twisting machine contains a transporting belt extending substantially horizontally in the longitudinal direction of the machine. The transporting belt is provided with bobbin holders and, viewed relative to the machine, is inclined downward towards the front. According to the invention, there are provided supporting means extending in the longitudinal direction of the machine. These supporting means are contacted by the front side of the empty bobbin tubes placed onto the transporting belt. The invention permits a considerable space saving to be achieved in such a manner that, in comparison to known machines, more space is available for the spindle bearings or bolsters and there can be used a spindle rail which fulfils the requirements of sufficient stability. Furthermore, the invention allows an improved spinning geometry to be chosen.

Abstract: The invention concerns the pneumatic cleaning of spinning rotors for open-end spinning. Cleaning is accomplished in a manner such that the spinning rotor is brought to standstill and a cleaning device is snugly seated by means of its cleaning cover upon the rotor housing. Thereafter, during a suction operation there is particularly sucked away the part of the contaminants or impurities forming a fiber ring. Then, there is formed an air jet by means of pressurized or compressed air and a blower head which is introduced into the internal space of the rotor. This air jet while rotating frees the remaining contaminants or impurities, especially the dust-like contaminants, which are then likewise removed by suction.

Abstract: The present invention concerns an apparatus for winding threads or yarns and similar strands, in which a friction drive roll and a bobbin support roll are provided. The latter is supported only at one end, and the other end is free, in such manner that easy operation is possible. In arrangements of such type any deviation, however small, of the two rolls from their correct, parallel position, is to be avoided if correctly built bobbin packages are to be produced in the winding process. This is achieved according to the invention in that a coupling means, coupled or connected with the bobbin support roll, which moves during the winding process, brings about a forcible parallel alignment of the two rolls.

Abstract: The present invention concerns an apparatus for severing a fibre layer (3) composed of mutually slidable staple fibres, and containing two driven pairs of rolls (9/10; 11/12) forming two nip lines for the fibre layer (3) guided therebetween. Severing is achieved in that the two pairs of rolls (9/10; 11/12) are kinematically coupled using a flexible power transmitting element (19) in such a manner that by moving a roll tandem (26) contained in the path of movement of the power transmitting element (19) one pair of rolls (11/12) is rotated relative to the other one (9/10). Owing to this relative rotation of the pairs of rolls the fibre layer clamped between the nip lines is severed. This apparatus presents the advantage that its design is simple and reliable and that, in particular, no clutch is required.

Abstract: The present invention concerns a method and an apparatus for producing a draftable staple fibre sliver (12) from a strand (12) of endless filaments, which is united and condensed for further processing. According to the invention the zone of the united and condensed sliver, from which, due to the cutting process, fibre points stick away inclined and pointed towards the front and outside, is inserted into the inside of the sliver.In this manner the detrimental effects, caused by the fibre points sticking out, are eliminated. Particularly the defective points in the end product produced, caused by these fibre points, are eliminated, fly waste generation in the processing room is reduced and, owing to the reduction of the danger of clogging of the fibre sliver guiding funnels, the operational reliability of the subsequent processing machines is improved.

Abstract: The present invention concerns a method of automatically doffing the full bobbin packages from, and donning the empty bobbin tubes onto, the spindles of a preparatory spinning machine equipped with flyers. The flyers are of the so-called suspended type, i.e. they are rotatably supported in a flyer head.For the conjoint, vertical doffing of the full bobbin packages, and for the conjoint, vertical donning of the empty bobbin tubes the flyers are pivoted to the side in such manner, that they cannot obstruct the doffing of the full bobbins any more.The inventive preparatory spinning machine comprises a common support beam in which the flyers are rotatably supported, in which arrangement the beam can effect a translatory movement in such manner that each flyer can be brought into an inclined position.

Abstract: The present invention concerns the production of fancy yarns, in which during open-end spinning a roving is supplied program-controlled to the spinning unit for the yarn to be produced. According to the invention at least one roving bobbin is supported by a support member, which is detachably arranged on a can used as a receptable for the fibre material to be processed. The bobbin creel used up to the present for the bobbins impairs the accessability of the winding locations for the fancy yarn produced. This creel, according to the invention, no longer is required. Thus, the cumbersome mounting and dismantling of the creel in changing over from normal yarn to fancy yarn and vice-versa is dispensed with. According to the invention the alterations required for such changes of the yarn production mode are extremely simple.

Abstract: The present invention concerns a flyer for roving frames. According to the invention the flyer arms (14,16) at their free ends are connected rigidly with a ring (17). Furthermore, an enclosed guide duct with a guide tube (22) is provided for the roving, which guide tube (22) is supported to be pivotable about its longitudinal axis and supports a presser finger (25). Thus, a flyer of relatively low weight results, but of high solidity, permitting high rotational speeds. The guide duct for the roving can be of enclosed shape over a maximum of its length.

Abstract: Operatively connected with a spinning ring of a ring spinning or ring twisting machine is a tubular inner ring at a small distance, the upper limit or boundary of such inner ring being located at a higher position than the traveller guide surface defined on the spinning ring, in such a manner that unthreading of the thread, which no longer is tensioned by the traveller is rendered impossible. Also the inner ring and/or the spinning ring are provided with at least one slot-opening by means of which traveller debris can escape. Furthermore the distance of the outer upper edge of the inner ring from the traveller guide surface is to be chosen sufficiently large, so that upon restarting of the winding process the traveller does not collide with the inner ring.

Abstract: A drive for the rolls defining a main drafting zone of drafting arrangements of long spinning machines, wherein in order to prevent drafting defects caused by distortion movement of the rolls, the latter are driven from one end by a first gear arrangement and from the other end are interconnected rigidly drivewise or slippage-free, respectively, during the standstill of the spinning machine via a second gear arrangement and via a freewheel clutch.

Abstract: A method and apparatus for taking-in a fibre layer in blow-room machines wherein the fibre layer is pressed by a number of pivotable pedal levers distributed across the width of the machine, and loaded by a pressing device, against a take-in roll. In the absence of fibre material between the take-in roll and the pedal levers, the pedal levers are temporarily lifted-off the take-in roll.

Abstract: Each card is interconnected to a multiplicity of pneumatic feed ducts via a branch duct which can be selectively placed in communication with any one of the feed ducts. Each branch duct includes a plurality of openings near one end, each of which is opened or closed relative to a feed duct by means of a sliding baffle. In addition, the upstream end of each branch duct is open to the atmosphere so that the same constant air pressure prevails in all of the feed chutes to the various cards.

Abstract: Weighing apparatus for continuously weighing a throughpassing layer of fiber material in a metering device of a spinning preparatory machine with two pairs of rolls arranged at a distance from one another for supplying the layer of fiber material to and for taking-off the layer of fiber material from a measuring zone between the pairs of rolls. There are provided two weighing plates, each of which is pivotable about an axle and connected with a measuring signal transmitter, the signal of which depends on the pivoting angle of the plate. An endless belt which contactingly glides across the weighing plates and which is driven at the speed of movement of the layer of fiber material is provided for transporting the layer of fiber material.

Abstract: A method of, and apparatus for, controlling the startup, the normal operation and the stopping of all spinning positions of an open-end spinning machine provided with an electronic control unit supplied with power via a supply line. Control circuits extend from the electronic control unit to devices which influence the course of the spinning position. In the event of failure of the electronic control unit the normal operation is maintained.