Abstract: A spinning machine for producing a thread includes a multiplicity of spinning stations at which sliver is spun into thread, each of the spinning stations including a thread-break sensor and a slubbing-stopping device connected to the sensor and released by an electrical current from the sensor for arresting the sliver after each thread break sensed by the sensor, each slubbing-stopping device including an electrical energy storage device, a charging circuit for the storage device, and a device for discharging the storage device for operating the slubbing-stopping device.

Abstract: A spinning machine is provided with a thread monitoring device having a light source and a light sensitive cell to sense the thread running to a spindle from the front exit rollers. The thread monitor is formed of two parts, each having a housing arranged on either side of the thread. Within each housing is the light source and the light sensitive cell. The housings are each detachably connected to a slider which is adjustably held in a guide support that can be swivelled and locked in a carrier which is secured to the free end of a support rail running alongside and parallel to the roller supporting arm.

Abstract: Along the ring bank of a twisting or spinning machine is provided a shaft rotatable about an axis parallel to the ring bank and supporting holders for thread-break sensors inductively responding to the orbiting of the travelers. Since the holders are independent of the ring bank, they can be swung out of the way to allow replacement or maintenance of the ring bank.

Abstract: The apparatus for producing two-component thread comprises a twisting mem to which the two components of the two-component thread are fed, and means for severing one of the components as the feed of the second component ceases, including a hollow cylinder operatively connected to a drive and having an annular slit made therein, with at least one flat knife accommodated in the internal space of the cylinder in the area adjoining the annular slit.

Abstract: The spinning machine comprises a drafting frame for drawing sliver and at least one fiber suction station connected to a vacuum source associated with this drafting frame. To save energy each fiber suction station is provided with a sensing means for detection of broken fiber or roving and throttling means for throttling the suction. The throttling means is adjustable to a throttled position in the air stream which considerably reduces the air flowing into the fiber suction duct. This throttling means is also automatically disengagable into a position resulting in a considerably increased air flow rate following detection of broken fiber or roving by the sensing means.

Abstract: An apparatus is disclosed for driving a pair of friction rollers arranged adjacent one another forming a wedge-shaped yarn-forming gap. A common drive belt is run along the surfaces of both rollers and the shaft of an electric motor. The motor is displaceably mounted in a guide which maintains the motor shaft in an essentially parallel relation to the friction roller shafts. The motor shaft can thereby be displaced for the purpose of increasing or decreasing the tension of the drive belt.

Abstract: A spinning machine for the production of yarn in which at each spinning station, a yarn break sensor is provided in conjunction with a sliver-stopping unit. The latter is electrically actuated and to reduce peak current draw upon simultaneous thread breaks, a time-delay circuit, e.g. using shift registers, is provided to time-stagger the operation of the stopping units.

Abstract: An arrangement for evaluating the performance of a yarn processing machine including a plurality of yarn processing stations that are individually operatable and each of which includes a monitoring device for the operating conditions thereof and a yarn quality monitoring device capable of detecting yarn quality defects comprises data links which separately supply first signals from the condition monitoring devices and second signals from the yarn quality monitoring devices to an evaluation location. An associating device is situated at the evaluation location, being connected to the data links and operative for associating the second signals which are representative of quality defects with the associated yarn processing stations.

Abstract: Each of the operating stations is provided with a signal directing means for emitting a call signal indicating a need for servicing, a positional reference marker in order to initiate a braking operation and a locating reference marker for exactly locating a service tender relative to the operating station.The service tender carries a signal receiving means for receiving a call signal emitted for an operating station during passage by the operating station. In addition, the service tender includes a sensor which is responsive to the positional reference marker of the operating station to be serviced which serves to initiate braking of the motor for the service tender. Further, the service tender carries a locating device which cooperates with the locating reference marker of the operating station in order to locate the tender relative to the operating station for servicing purposes.

Abstract: Each of the spinning stations is provided with a cradle having a pair of arms which are pivotally mounted on a carrier. The service tender is provided with a pair of light beam emitter/receiver units so that when the tender is called to and aligned with a specific spinning station one emitter/receiver unit is able to detect the presence of the carrier in a raised position while the second emitter/receiver unit is able to detect the presence or absence of a yarn package or bobbin tube on the cradle.The service tender is operable in response to the combination of signals received from a calling station at the spinning station and the signals received from the emitter/receiver units.

Abstract: A draw frame for a spinning machine is provided with roving blocking mechanism associated with its inlet rollers actuable on rupture of the remittant thread to arrest movement of the roving and is further provided with a sensor for detecting the continuity of the roving being fed from a source of supply and a roving clamp situated between the sensor and the blocking mechanism. The blocking mechanism and the roving clamp are arranged to be simultaneously operated in response to a signal from the sensor or in response to rupture of the thread.

Abstract: An open-end friction spinning machine having a plurality of spinning units, each having two rollers that are arranged next to one another and form a wedge-shaped yarn-forming gap is provided with a yarn guard for sensing yarn breakage in each spinning unit. In response to yarn breakage sensed by an individual yarn guard of a spinning unit, a wind-up spool is lifted off its driving roller and the rollers are stopped. Preferably, a control element is provided for lifting-off of the wind-up spool, and at the same time triggering the stoppage of the rollers and/or switching-off of a suction device arranged adjacent the wedge-shaped yarn-forming gap.

Abstract: Each cover of a spinning station is provided with a rail element for guiding the service tender along the aligned spinning stations. In addition, the service tender carries a guide means in the form of a roller which has a cylindrical part to roll on the rail element of the covers when the covers are in a closed position as well as a frusto-conical part for rolling on the rail elements when the covers are in an open condition.

Abstract: An improved ring spinning machine for making a filled bobbin of yarn, thread or the like comprises at least one ring rail which moves up and down near a plurality of spindles driven by a ring rail drive. A control for the ring rail drive in case of an unforeseen machine stoppage, is arrayed so as to cause the ring rail drive, when it would otherwise drive the ring rail in the upward direction on restart because the ring rail was moving up at the time of shut-off, to reverse so that the ring rail moves downward no later than the time of restart of the spindles, so that the ring rail moves downward after the unforeseen machine stoppage at the beginning of restart thus providing for a safer, more reliable spinning operation.

Abstract: This invention relates to an apparatus for emergency fiber supply to a spinning unit in an open-end spinning machine. According to the invention, a sensing unit controls an electromagnetic coupling and fiber supply device, such that a break in the yarn is rapidly detected and the fiber supply is immediately disengaged, even if the conventional thread breakage detector fails.A sensing unit is disposed in that portion of the wall of a cover that extends into the spinning rotor interior. It is adapted to respond to the excess accumulation of unspun fibers and/or an undue increase in temperature by disconnecting the electromagnetic fiber supply coupling via the thread breakage detector circuit to which it is connected. The sensing unit can be a pressure sensitive microswitch, a bimetallic relay, a thermistor, or a combination of these elements.

Abstract: A device attached to a spinning or twisting machine, designed to monitor the integrity of two threads merging under tension into a yarn, has a carrier swingable about a horizontal axis and provided with a thread guide, such as a pair of parallel pins, bracketing the yarn downstream of the merger point. A rupture of either thread lets the carrier rotate, e.g. by gravity, from an unstable normal position by half a turn into a stable off-normal position to impede the advance of the remaining intact thread whereby the latter also breaks. Such action, however, is prevented when the yarn is under reduced tension, as during shutdown or startup of the machine, by a locking mechanism arresting the carrier in its normal position. The locking mechanism may include an electromagnet whose winding can form part of a circuit signaling the displacement of the carrier into its off-normal position in response to a thread break.

Abstract: An optical electronic monitoring apparatus is used to detect undesired coil or lap formation at transport and drive rollers 13. For this purpose the beam 14 of a light barrier is arranged along the surface of the roller 13 parallel to its axis 23 in such a way that it is partially obscured by the cross-section of the roller. The subsequent evaluation circuit has a low pass filter 16, a differentiation stage 17 and a further low pass filter 18.

Abstract: An apparatus for sliver can controlling in a spinning mill having a plurality of spinning machines each comprising a plurality of spinning stations. The apparatus includes various lines of sliver can transporting tracks through which a full sliver can may be brought to a position adjacent to any of the spinning stations, as required. Sliver consumption quantities at the respective stations are computed by a control circuit as a central processing unit. When the sliver consumption at any one of the spinning stations reaches a predetermined quantity at which its sliver can is nearly empty, the control circuit operates to energize a warning means and means for indicating the number designating such spinning station calling for sliver can replacement.

Abstract: A device for mounting or donning of bobbins onto a transport band of a textile machine, especially a ring spinning or ring twisting machine contemplates that incorrectly mounted bobbins are ejected or doffed by a bar member pivotable about a pivot axis or shaft. To eject or doff such incorrectly mounted bobbins the bar member is moved, at a monitoring or control position, in a downward direction towards the head of the bobbin currently there located and ejects incompletely mounted bobbins. The donning device exhibits simplicity and a reliable mode of operation. Furthermore, by means of the invention damage produced by incorrectly mounted bobbins is avoided and damaged bobbins are removed from the operating process.

Abstract: A device for interrupting the feed of a roving to drawing frames of a thread spinning machine of the type wherein each drawing frame comprises a plurality of pairs of upper and lower drawing rollers, of which the lower drawing roller, located on a roving in-feed side of the drawing frame, is provided with a clamping segment for interrupting the roving feed in a released position thereof in response to a broken-end detector, which monitors the presence of a spun thread, is improved by the provision of a suction device, associated with the drawing rollers on a thread formation side of the drawing frames, for collecting rovings present in a drawing frame when the roving feed thereto is interrupted. In accordance with a perferred embodiment, the suction device comprises suction tubes which are mounted for movement away from the drawing rollers and lockable in respective operating and nonoperating positions.

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: The passage of material through a textile spinning or twisting machine is regulated through operation of a control element associated with the movement of said material. Light reflected from the moving material is converted into a variable electrical signal which is then modulated and used to operate a light-emitter. The modulated output of the light-emitter is sensed by a receiver located remote therefrom, but in direct-line-of sight, into an electrical command signal for operating the control element.

Abstract: A stop motion for textile machines for transmitting a signal for stopping a working station in case of a thread breakage or a used-up supply bobbin. The stop motion includes a thread guide eyelet secured to a thread sensor bar which is pivotable about a horizontal pivot shaft, and is characterized by a guide element located between the pivot shaft and the thread guide eyelet. The guide element supports the thread sensor bar in its normal operating position against lateral vibrational movements exerted by the running thread.

Abstract: An arrangement of electrodes for monitoring thread breakage on ring spinning machines for a sufficiently strong reception of the electric charge of the running thread for generating a signal that can be further processed, in which an electrode (3) is arranged in the proximity of the moving thread (1) between a stretching mechanism (2) and a thread guide (4), preferably on the thread guide (4) on a displacable or turnable insulated body (5), or such electrode (3) with insulated body (5) is positioned on a balloon constricting ring (6), adjustable through displacement or turning of the insulated body (5) in such a way that the thread (1) is not permanently in front of this electrode (3), this electrode (3) being connected by means of an insulated line to an electronic circuit or directly to an electronic circuit.

Abstract: A device attached to a spinning or twisting machine, designed to monitor the integrity of two threads merging under tension into a yarn, has a carrier in the form of a disk or a stem rotatable about an axis and provided with a thread guide such as an eyelet, or a pair of pins parallel to that axis, bracketing the yarn downstream of the merger point. A rupture of either thread, detected by a separate sensor or by one of the bracketing pins, generates or releases a force which rotates the carrier around its axis by about half a turn to impede the advance of the remaining intact thread whereby the latter also breaks and the machine is stopped automatically, or manually in response to an alarm signal.

Abstract: A device for indicating the triggering of a signal transducer in, for example, thread surveillance and monitoring systems.

Abstract: Apparatus for detecting a twisted pair (21) of conductors includes contact means (60) in the form of a generally semi-circular rocker. One diametrical end portion of the rocker rides on portions of the twisted pair of conductors as they are advanced over a sheave (34). The opposite diametrical end portion of the rocker is caused to be supported in alignment with a sensor (81). Should one of the conductors be missing, perhaps because of a break or equipment malfunction, the rocker is no longer caused to be maintained in a position such that the opposite end portion is aligned with the sensor. This causes the sensor to provide a signal indication of a break and because of its changed position to provide a visual indication to an operator.

Abstract: A bearing rail is provided extending along each side of the draw frame and spaced laterally from the outer edges of the double upper rollers. At the end of the each rail, in the area when the thread exits from the exit rollers, each rail is provided with two carriers, one of which is provided with a light source and the other which with a light receiving photo-cell. The light source on one side of the drawing frame is arranged in association with the thread being drawn adjacent the photo-cell on the other side so that the light source causes this remote thread to cast a shadow on the photo-cell adjacent to it. Similarly the light source on the other side, the thread remote from it and the photo-cell opposite it are also aligned. The shadow on each photo-cell produces an alternating current which is then independently fed to a circuit and switch means, housed at the inlet end of the bearing rail.

Abstract: A spinning frame is provided with a fiber break guard having a fiber guide which as a consequence of the breaking of one of the individual fibers is displaced to cause the breaking of the other fiber. For a certain and rapid breaking of the remaining fiber, the displacement of the fiber guide caused by the remaining fiber, or at least the displacement of an associated member causes a pinching of the remaining fiber in a clamping device or the activation of a fiber separation device for cutting through the remaining fiber.

Abstract: A device is provided for interrupting the feed of a roving to drawing frames on ring spinning machines in response to thread breakage at a respective spinning unit. The device includes a clamping segment annularly clamped about a lower drawing roll and having abuttments for selectively lifting the upper drawing roll away from the lower roll to interrupt the feed of roving in response to movement of the clamping segment to an interrupting position. To control the clamping segment, a locking detent lever is provided which is spring-loaded into a locking position engaging the clamping segment and movable to an unlocking position in response to an electrical drive mechanism which, in turn, is controlled by a thread end break detection device. In particularly preferred embodiments, a capacitor is used to energize the drive means to unlock the lever, the capacitor being charged during normal spinning operation and discharged for a preset time period during the unlocking operation.

Abstract: An identification detector and cooperating identification encoder generate an identification signal uniquely correlated to a specific individual one of a group of ring spinning machines which are traversed by at least one traveling unit.

Abstract: In a process and apparatus for monitoring thread breaks without touching the thread, the stochastic electrical charge of the moving thread is detected without contact by means of a metallic plane electrode disposed at the textile machine close to the moving thread. The change of potential upon the occurrence of a thread break is amplified in a high input resistence amplifier. The output of the amplifier is connected to the threshold device directly or by a capacitor. A reference potential is connected to the threshold device input, and the threshold device outputs a binary signal for indicating the condition of the thread.

Abstract: A ring spinning machine for spinning yarns comprised of finite length fibers has a plurality of spinning locations for combining two untwisted textile strands into a yarn to which a twist is imparted prior to winding up of the yarn. A sensor is associated at each spinning location which reacts to a break of one of the two fiber strands and causes an interruption of the spinning of the yarn. The sensor is designed to sense a characteristic of the yarn which changes in a manner recognizable by the sensor when the yarn is only being spun from one of the two fiber strands and an interrupter is provided which acts in response to the signal from the sensor to interrupt the spinning of the yarn upon the detection of a strand break.

Abstract: A method for evaluation of balloons of yarn-like materials. Ballooning of yarn-like materials is converted to an electric signal, the electric signal is amplified and the electric signal is analyed by a Fourier analyzer to know respective frequency components and voltage amplitude components which show the condition of ballooning.

Abstract: In order for the snail wire that is to be fitted on a ring-frame for detection of yarn breakage to sense sharply the intrinsical vibration resulting from its contact with yarn, the flat portion of the snail wire where the piezo-electric element is mounted is modified so as to sense the vibration more easily and furthermore, the piezo-electric element and connecting lead are covered and retained with elastic material for protection to thereby ensure the yarn breakage detecting snail wire which can be used stably throughout a long period.

Abstract: A textile machine such as a spinning machine has, for each spindle, a comparator which senses the voltage at a motor driving said spindle and compares it with a reference voltage. Upon the comparator sensing such a change in the motor voltage as would be consistent with breakage of the material being worked on the machine (e.g. a roving passing towards the spindle and being spun into a thread), it operates a switch which serves both to switch off the motor driving the spindle and to arrest the material passing to the spindle.

Abstract: The control arrangement is used in conjunction with a textile machine at which a thread or a filament, respectively, supplied from a creel package is guided via a roll, around which it forms a plurality of windings, to a thread guide eyelet and to a ring spindle system. The invention aims at the reliable elimination of any danger of lap-up formation on the roll including the danger of lap-up formation caused by unwinding the thread from a take-up bobbin (unwinding "overhead" from the take-up bobbin). The control arrangement comprises a first thread severing element which severs the thread upstream from the roll, and a second thread severing element which severs the thread along the unwinding path between the roll and the take-up bobbin.

Abstract: A control mechanism for use on an open-end spinning machine provided with a sensor which senses tension in yarn being produced and a switching mechanism for interrupting a fiber feed device responsive to the sensor sensing a drop in yarn tension. The switching mechanism includes a switch-on member 3 and a main switch member 4 that is switched on upon actuation of the switch-on member for putting the sensor 10 and fiber feed device out of service. A switch-off member 5 is provided for switching off the main switch member 4 for putting the sensor and the fiber feed device 60 back into service.

Abstract: An apparatus for detecting an erroneously inserted empty bobbin is disposed on a spinning frame which is provided with an automatic doffing and donning apparatus and a conveyor having empty bobbin supporting pegs mounted thereon. The detecting apparatus photoelectrically or electromechanically detects whether or not an empty bobbin is correctly inserted onto the corresponding empty bobbin supporting peg based on the fact that an incorrectly inserted bobbin inclines backwards and projects upwards. When the incorrectly inserted bobbin is detected, an alarm is actuated in order to notify an operator in charge of the spinning frame of the same.

Abstract: There is measured the length of a thread withdrawn overhead from a spinning cop or from a yarn bobbin. In order to circumvent the fault sources caused by slip and/or thread elongation there is generated a signal which periodically varies in accordance with the movement of the thread release or detachment point at the spinning cop or at the yarn bobbin, as the case may be, and there are counted the number of cycles of the fundamental frequency of this signal. The thread length is obtained by multiplication of the counted number of cycles by the constant thread length of two successive winding layers for spinning cops or yarn bobbins of the same origin and the same thread. The periodic signal can be derived from the thread withdrawal force or from the number of revolutions of the detachment point. The method is particularly suitable when rewinding a number of spinning cops on to a cross-wound bobbin.

Abstract: A travelling scanning apparatus for successively checking the working conditions at the spinning position of a ring spinning machine is enabled, in order to determine whether a yarn breakage has occurred at a spinning position, and, in the affirmative case, whether there prevails a danger of damage due to lap-up formation on a roll of the drafting arrangement. Using a yarn feeler first the presence of a normally spun yarn is detected. If no yarn is present, the broken yarn suction nozzle, which is used for eliminating the fibres not spun in, is lowered from its normal working position into a scanning position, and an optimum fibre stream is obtained between the delivery rolls of the drafting arrangement and the lowered nozzle for scanning using a second feeler. In case of non-presence of this fibre stream, that is in case possible lap-up formation, a roving supply interrupting device is activated and the roving supply to the drafting arrangement is interrupted.

Abstract: An end detector for detecting an interruption in an individual textile strand being processed on a textile machine and the combination of such detector with others mounted on a roving frame.

Abstract: Apparatus and method for facilitating maintenance of a data system gathering information regarding the operating conditions of ring spinning machines in a textile mill wherein at least one traveling unit, supported for travel along a predetermined path for traversing one or more ring spinning machines, carries detectors for monitoring ends of strand material normally being formed by traversed machines, additional sensors are provided on each machine for signalling operating characteristics of the machines, and processors operatively communicating with the sensors and responsive to signals from the sensors determines from such signals the operating conditions of respective ones of the machines. In accordance with this invention, malfunctions of defined portions of the data system are identified and an output display of information characteristic of the nature and machine location of malfunctions is generated.

Abstract: Apparatus and method for facilitating efficient management of manufacture by ring spinning machines in a textile mill through the use of a data system wherein sensors are provided on each machine for signalling operating characteristics of the machines, and processors operatively communicating with the sensors and responsive to signals from the sensors determine from such signals the operating conditions of respective ones of the machines. In accordance with this invention, an input device permits entering a request for display of information characteristic of selected individual operating conditions of selected individual spinning machines, with an output device then producing such display.

Abstract: An improvement in a data link, such as is used for continuously transferring data concerning operations of textile yarn forming machines such as ring spinning frames, wherein a transmitter and receiver each use particular combinations of oscillators and phase locked loop circuits to function as frequency synthesizers.

Abstract: A device is disclosed, as an attachment to a spinning, or a doubling frame, for stopping the rotation of the spindle and the sliver feed whenever a sliver or a thread breaks and for giving, at the same time, a warning signal (e.g. a luminous signal) to a watching operator. The device comprises a thread feeling whisker connected to a circuit which controls electromagnetic clutches connected to the spindle, and the spindle braking and stopping mechanism is connected by a flexible cable to a sliver-pinching press so that as soon as the spindle is being braked and stopped the sliver is pinched and sliver feed is discontinued. The electric circuit also comprises an indicator lamp.

Abstract: A textile yarn processing machine, such as a two-for-one twister or the like, having respective yarn processing stations is provided with an improved yarn monitoring system for stopping the operation of the yarn processing station in response to the absence of a yarn running therethrough, as for example, upon the occurrence of a yarn breakage. The improved yarn monitoring system of the present invention is constructed generally as follows: A yarn sensor is constructed and mounted so as to be held in an operative setting by yarn tension when the yarn is running in normal operating condition and to be released in the event of the release of such tension, as upon a yarn breakage. A switching mechanism is provided for stopping the operation of the yarn processing station, and means is provided for operably connecting the yarn sensor to the switching mechanism for actuating the switching mechanism upon the release of the yarn sensor from its operative setting.

Abstract: At each work position of a textile machine having a plurality of work positions driven by a common drive unit (warper's creels, winder or spooling and spinning machines, or circular knitting machines, for example), an electronic monitor device is provided which is responsive to thread travel. An indicator device is associated with each travel monitor and comprises a storage element and an indicator connected thereto, for the permanent indication of a thread breakage. To prevent false indications of thread breakage when the machine is stopped, a control signal is generated when the machine's drive unit is operating. Each indicator device further includes an electronic switch responsive to the control signal to insure the storage unit can be set to indicate a thread breakage only during operation of the drive unit.

Abstract: A method and apparatus for reducing waste of supply strands passing to a series of yarn processing units, in which a detector moves along the yarn processing units alternately in a first direction and a second direction opposite from the first direction while sensing breakage of any one of a series of strands being delivered from the processing units and also sensing the direction of movement of the detector, and in response to sensing breakage of any strand, and irrespective of the direction of movement of the detector, passage of the corresponding supply strand is interrupted in its course to the corresponding yarn processing unit by a flowing stream of air being directed from a nozzle moving with the detector into engagement with a corresponding, normally inactive, strand interrupting member for actuating the same.

Abstract: A sensing device responsive to ballooning motion of textile yarns, and producing electrical sensing signals comprising a hollow or ring-shaped yarn guide body whose interior periphery is provided with motion responsive and non-responsive elements in alternate sequence.