Abstract: An apparatus and a method automatically charge a machine for characterizing mechanical and/or geometrical properties of staple fiber samples. The apparatus includes a plurality of clamping strips each having a plurality of clamps for receiving fiber samples, at least one reservoir for the clamping strips, and a transporter whereby the clamping strips or individual fiber samples are automatically brought from the reservoir into the machine. The method includes charging a plurality of clamping strips with fiber samples, introducing the charged clamping strips into a reservoir, and automatically bringing the individual clamping strips or individual fiber samples via a transporter from the reservoir into the machine.

Abstract: A yarn unevenness information analyzing apparatus which can perform an analysis of periodic yarn unevennesses without being restricted by another analysis of non-periodic yarn unevennesses. Signals from a large number of yarn evenness detectors are inputted to a CPU for yarn unevenness analysis by way of a first switch for changing over the signals in a short period to successively output the signals and a second switch for changing over the signals in a long period to successively output the signals.

Abstract: A wire temperature measuring method for a wire electric discharge machine by which temperature and temperature distribution of a wire can be accurately measured during electric discharge machining. After a machining voltage is cut off, a loop current flows. Based on the loop current and a voltage between electrodes measured by a differential amplifier, a resistance between the electrodes is obtained, and the temperature of a wire is obtained based on the resistance. Accordingly, the wire temperature during actual machining operation can be measured with accuracy.

Abstract: A method for monitoring and maintaining correct regulation of the tension of a yarn fed to a textile machine, such as a loom, a hosiery machine or a knitting machine, including the steps of continuously determining both the state of movement and the tension of the yarn at a point between a support bobbin from which the yarn is unwound and the textile machine which processes it, comparing the measured tension with a predetermined desired tension and adjusting the tension of the yarn at a point between the bobbin and the point in which the tension is measured. The tension adjustment is interrupted when the measured tension is equal to the desired value. The device of the present invention includes sensing elements for sensing movement and measuring tension of the yarn and a comparison element for comparing the measured tension value with a desired tension and which is connected to the sensing element.

Abstract: Conditioned gas flows are applied at various critical locations in instruments and apparatus for testing and processing textile fibers, such as cotton. In the context of test instruments, a standard test zone environment (which becomes part of the test record) is effected by the introduction of controlled conditioned gas flows directly into a testing zone, including into testing instruments themselves. In the context of processing apparatus, direct control of processing performance parameters is effected by "controlling parameters", which are in turn effected by the application of conditioned gas flows. A plurality of "performance parameters", which may be in conflict with each other, may be controlled in accordance with a predetermined compromise control strategy, carried out by feedback or feedforward control systems implementing modern statistical control approaches.

Abstract: A method and apparatus for simultaneously cleansing and grading yarn produced by a spinning or spooling machine with a plurality of spindles or primary spools. One spindle processor is associated with each spindle. The spindle-processor grades in a grading plane containing a cleansing envelope. All yarn defects located outside the cleansing envelope in the grading plane are considered unacceptable defects and are excised from the yarn.

Abstract: An apparatus and method for measuring characteristics of entities in a sample of textile material, including trash, provides a sample of textile material to a processor where entities are individualized and thereafter transported to a sensor system. Characteristic signals are generated by the sensor signal corresponding to sensed characteristics of the entities, including trash, and a computer analyzes the characteristic signals to identify signals corresponding to trash and to classify the trash signals as corresponding to one of several types of trash. Based on the characteristic signals, the computer determines an entity length, diameter and speed and also determines a peak value of a characteristic signal corresponding to an entity. Based on these measurements, trash is characterized as to one of several types of trash.

Abstract: A device for measuring the mass of fiber slivers contains an entry part for the fiber sliver to be measured and a measuring part adjoining the entry part. Arranged on the measuring part are two measuring members working on different measurement principles, specifically a so-called fiber-sliver mechanically, and so-called active-pneumatic measuring member for measuring the pneumatic pressure generated by the fiber sliver at a contraction. In addition to measuring the mass of fiber slivers, the device can be used for obtaining a characteristic variable for their composition or for separate regulation and monitoring in a control stage.

Abstract: Test material (F) such as a textile yarn is illuminated and the light reflected from the test material is measured so that the presence of a foreign substance can be determined from a change in the reflected light. When detecting foreign substances which are darker than the test material (F), an image of the test material in front of a light background (4) is projected onto a sensor (3), and for the detection of lighter foreign substances an image of the test material in front of a dark background is projected onto the sensor. The apparatus and method may be used in combination with an electronic yarn clearer for the purpose of detecting foreign fibers in yarns.

Abstract: A device for measuring the mass of fiber slivers contains an entry part for the fiber sliver to be measured and a measuring part adjoining the entry part. Arranged on the measuring part are two measuring members working on different measurement principles, specifically a so-called fiber-sliver mechanically, and so-called active-pneumatic measuring member for measuring the pneumatic pressure generated by the fiber sliver at a contraction. In addition to measuring the mass of fiber slivers, the device can be used for obtaining a characteristic variable for their composition or for separate regulation and monitoring in a control stage.

Abstract: The creation of fault diagnosis takes place using a knowledge-based evaluation of signals which signal the quality of the products produced, for example using spectrograms obtained in the investigation of parameters of textile fiber or filament structures. A first evaluation unit (NA) is provided for the detection of characteristic deviations of the spectrograms, which unit generates a so-called fault descriptor (SD) for each such deviation. A second evaluation unit (WA) uses a knowledge base (WB) to determine possible fault causes for each fault descriptor.

Abstract: A testing apparatus includes a receiver for holding a plurality of textile samples and an automatic feed mechanism disposed adjacent to the receiver for selectively engaging and removing samples from the receiver and transporting them to a processor where the textile material is processed to produce textile entities in an individualized condition. The entities are then transported to a sensor that produces signals corresponding to characteristics of the entities. A control means detects the presence or absence of a sample in the automatic feed mechanism and controls it accordingly. Analog and digital components analyze the characteristic signals to identify segments of the characteristic signals that correspond to neps, trash and fibers.

Abstract: A non-contact temperature measuring system and a dual-reference body structure employed therein is described, wherein a moving object whose temperature is to be determined, is passed by first and second reference bodies having a same form factor with respect to the moving object. Each of the reference bodies has a heat flow sensor embedded at the end of a cavity formed in the reference body such that the heat flow sensor primarily responds to radiation heat flow generated by a temperature differential between the moving object and its respective reference body.

Abstract: Keratin fiber condition is evaluated by testing dry hair to determine analysis factors. For each factor, two values of elongation are determined by measuring the force required to obtain a first value and a second value of elongation of the fiber. The percent total elongation of the fiber to its break point is also determined. The ratio of the two measured forces is used with the percent total elongation in empirically derived nonlinear equations to determine analysis factors, such as a condition factor and a moisture factor. It is found that each factor is independent of fiber diameter or the source of the fiber. It is also found that the factors change as a function of subjective or objective measures of chemical damage to, and moisture content of, the hair fiber. The factors can, therefore, be used for identifying hair care products suitable for application to the hair without inducing unacceptable damage.

Abstract: The warp threads (Ka) are clamped as a thread layer, are divided off individually from this and are stretched with a simultaneous measurement of the tensile force and/or stretching. These operations take place before the weaving process in a step of the weaving preparation process in which the warp threads are in the form of a prepared warp-thread layer. The device contains means (1, 2) for clamping the warp-thread layer, means (4) for dividing off the warp threads and means (FP) for measuring the tensile force and/or stretching of the divided-off warp threads, the means (1, 2) for clamping the warp-thread layer forming an integral part of a warp preparation machine, preferably of a knotting unit or of a drawing-in unit.

Abstract: A physical property measuring device for measurement of physical properties of a test sample piece in the form of a flexible sheet-like material is provided. The test sample piece is fed to a measuring zone of the device while being interposedly held at a whole upper end thereof between transfer arms so as to be kept hanging, to thereby minimize or substantially prevent application of any unnecessary external force thereto during transferring. In the measuring zone, the test sample piece is kept interposedly held at upper and lower portions thereof between upper clamp arms of an upper clamp mechanism and between lower clamp arms of a lower clamp mechanism and the upper and lower clamp mechanisms are actuated relative to each other to carry out measurement of desired physical properties.

Abstract: The prevailing tension in an elongate strand, such as a textile yarn, is instantaneously measured, even at very low levels of tension and at fine incremental changes in tension, by a tension measuring apparatus utilizing a pair of fixed contact arms spaced from one another to define a strand contact line therebetween and an intermediate cantilevered sensing arm disposed at an equal spacing from each fixed contact arm and at a lateral spacing from the stand contact line. The fixed contact arms and the sensing arm are contacted with the strand simultaneously at the same common lateral side of the strand to cause the strand to deflect from the strand contact line at equivalent strand break angles between the respective strand contact points on the fixed contact arms and on the sensing arm.

Abstract: An apparatus for delooping fibers in a fluid flow preferably includes a cyclone for receiving entities from a fiber individualizer and delivering individual fibers to a sensor. The fluid flow rate to the cyclone is set to optimize operation of the individualizer and the flow rate from the cyclone is set to optimize operation of the sensor. A nozzle is provided in the sensor for mechanically delooping the fibers so they are sensed in a straight condition. In addition, electronics associated with the sensor detects sensor signals corresponding to looped fibers and electronically "deloops" the fibers to produce data, such as the actual length of a fiber that was presented to the sensor in a looped condition.

Abstract: Method for on-line process control of yarns wound upon reels intended for yarn package classification and sorting into homogeneous classes of predetermined quality standards. This method consists in the determination of the specific weight of the yarn bundling on the reel. This value is utilized to check the yarn package compliance with preset standard values of the technological properties, in particular of the dyeing affinity.

Abstract: Disclosed are various needle-based devices for individualizing single fibers and other entities from a fibrous mass, particularly for testing purposes. In one embodiment, an accelerated pin drafting machine has a plurality of combing elements which sequentially pierce a fiber mat and move within a drafting zone with increasing distance between adjacent combing elements. The accelerated pin drafting machine in turn feeds a fiber individualizer. In another embodiment, a comb-like needle sampler is provided which moves past a perforated plate such that portions of fibrous material protruding through the perforations are loaded onto the needle sampler. An elastomer clamping feedroll moves against the needles to clamp the sample, and then rotates to gradually feed fibers from the sampler. As an alternative to the elastomer clamping feedroll, a clamping block presses against the needles, and the needles are slowly retracted to gradually release fibers.

Abstract: The insertion of thread into a yarn tester is accomplished by a mechanism that includes a clamp (3) for the thread end and an insertion arm (14) mounted for pivoting movement about a fixed axis to contact a portion of the thread above the clamp and swing a loop portion of the thread down into the space between feed rollers and to present the loop to a take-over nozzle (13). The thread is transferred from the insertion arm to the nozzle (13) and is fixed until transfer in the clamp (3), so that the thread transfer takes place in the form of a loop. Consequently, the insertion arm (14) need have no special thread clamp and can be of correspondingly simple design. The pivoting movement of the insertion arm (14) requires only a simple drive, and the take-over of the loop-shaped thread (F) by the take-over member is carried out without difficulty.

Abstract: The present invention relates to an oiling frame for chemical fibre machines in which signal emitted by a sensor disposed above the filament bobbin winding machine of the chemical fibre machine for detecting broken filaments in any fibre strand is received by a cylinder for the same to actuate a set of blades below oil nozzles in the oiling frame so that the blades may instantaneously and simultaneously cut the fibre strands moving downward from the oil nozzles. Since the blades and the blade covers are designed to have several sharp edges which facilitate quicker and more precise cutting thereof while the blades can be economically made of non-expensive metal material.

Abstract: A process is disclosed for sampling textile fiber skeins. A fiber skein (2) continuously moved in the longitudinal direction (23) is intermittently brought to a stop within a defined section (4, 28). The profile of the immobilized section (4, 28) of the fiber skein (2) is flattened at least in partial region (24) and the textile analysis is carried out on this temporarily immobilized, flattened partial region (24) of the fiber skein.

Abstract: A device for measuring the temperature of an external moving filament is disclosed. The device includes dual thermal sinks or reference bodies; each reference body has two heat flow sensors that are matched in sensitivity and are connected in series. By utilizing dual thermal reference bodies, which are maintained at different temperatures, the device yields the absolute temperature of the filament by measuring the temperatures of the referenced bodies and the heat flow rates between each of the reference bodies and the filament. The device automatically calculates the proportionality constant between the heat flow rates and the temperature differences between the filament and the reference bodies and thus calculates the filament temperature. Each heat flow sensor has a row of sensitive elements or active junction lines that is not parallel to the path of the filament.

Abstract: Single entities such as fibers are delivered one at a time to a fluid stream, and a nozzle orients the entities so that each entity along its length (major dimension) is generally parallel with the direction of fluid flow. The entity then enters a sample region and a sensor senses entity data such as the speed of the entity as it passes through the sample region. A preferred embodiment includes a collimated beam of light and two side-by-side photo detectors positioned to measure light extinction caused by fibers passing through the sample region. Another sensor may be provided to detect light scattered forward at an angle of about forty degrees (40.degree.). The sensor signals are used to generate data that corresponds to such parameters as length, fiber ribbon width, fineness, cross-sectional area, maturity, cross-sectional circularity, shape, surface roughness, etc. Optical filtering provides information about composition (natural or man-made) and appearance (color and polarization).

Abstract: A process and apparatus for measuring mechanical properties of structural fibers. The process comprises the steps of suspending at least one fiber from a rigid fixture so that it may hang vertically therefrom; attaching a mass to the fiber, thereby placing the fiber in tension; guiding the mass in a frictionless manner to avoid extraneous damping so that only extensional motion is permitted; exciting the mass and the fiber with a longitudinally directed impulse to induce an amplitude of extensional vibration; generating output signals according to the impulse and the vibration response; and communicating computing means with the output signals. The computing means stores data for deriving certain material properties of the fiber based upon the output signals and computes the material properties.

Abstract: Interfacial strength of a composite material between its fibers and matrix is measured by observing a sample material through a microscope, measuring the diameter of selected one of the fibers by moving indicators in the field of vision of the microscope, applying pressure on the selected fiber by means of an indentator and measuring both the displacement of the indentator and the load on the fiber, and thereby obtaining a curve between the indentator displacement and the square root of the load. The curve has a straight portion and the point at which the curve begins to deviate from the straight portion is determined. The load value corresponding to this point is used to calculate debonding and sliding interfacial shear strengths of the material according to given formulas.

Abstract: In method of yarn strength measurement, the yarn of which the strength is being tested is grabbed while the yarn is moving during a production or processing process, in a spinning machine or a yarn-processing machine, a spooling frame or open-end spinning machine, by a clamp and is made to tear. The forces arising during tearing are determined using a test device and utilizing the electronic infrastructure already extant in the yarn cleaner to ascertain the yarn strength.

Abstract: A rotatable capacitance sensor preferably constructed of a generally cylindrical body mounted on bearings to a carriage assembly. The body has a number of parallel, spaced apart conductive plates having edges extending through the exterior body surface, and alternate ones of the plates are connected via a bearing to a conductor in one part of the carriage assembly, and the remaining ones of the plates are connected via a bearing to a second conductor in another part of the carriage assembly.

Abstract: A method and apparatus for carrying out the checking of the state of wear of a covering fabric in a driving belt (2) mounted on a plurality of pulleys (3, 4, 5) by measuring the electric resistance variations of the belt fabric. The apparatus provides that at least two of the pulleys (3, 4, 5) should be electrically insulated with respect to each other and connected to an electric circuit (20) designed to apply an electric voltage to said pulleys in order to carry out the measuring of the electric resistance of the fabric exhibited by belt stretches (A, B) comprised between the pulleys themselves. The electric resistance thus found lends itself to be compared with predetermined resistance values corresponding to different states of wear of the belt (2) fabric. The work surface of the belt (2) is coated with an electrically conductive fabric (12) acting by contact on the pulleys (3, 4, 5) and having characteristics of tensile strength.

Abstract: A rotatable capacitance sensor preferably constructed of a generally cylindrical body mounted on bearings to a carriage assembly. The body has a number of parallel, spaced apart conductive plates having edges extending through the exterior body surface, and alternate ones of the plates are connected via a bearing to a conductor in one part of the carriage assembly, and the remaining ones of the plates are connected via a bearing to a second conductor in another part of the carriage assembly.

Abstract: An apparatus for testing fibers includes a single fiber preparation and separation device for separating fibers from a sample of multiple fibers and producing an output of single fibers. A fiber transport means, preferably an air conduit, receives the single fibers and transports them to a removed location where at least one fiber is sampled from the transport means. In the preferred embodiment, the sampler is a hook that is inserted into, and removed from, an air conduit to hook and remove single fibers carried in a stream of air inside the air conduit. A testing apparatus associated with the sampler then determines at least one characteristic of the sampled fiber, such as strength, tension as a function of elongation, or cross sectional characteristics.

Abstract: A detector for detecting conductive materials contained in a stringy material sensitively, which is a cylindrical microwave cavity resonator (1) comprising a peripheral part (9) and two circular plates (10) covering the ends of the peripheral part. At least one of the circular plates has cylindrical protrusion (4) at its center. In the peripheral part, an antenna (5) for the generation of discharge is provided. In the protrusion (4) a detecting means (6) for discharge is provided. Paths (3,8) or a notched part (7) for the stringy material to be measured which passes through a high electric field formed by the protrusions and penetrate the cylindrical microwave cavity resonator oscillating at a fixed frequency, discharges are generated by the strong electric fields concentrated on the very small metals. Since sounds, light, and electromagnetic waves are generated at this time, the very small metals can be detected sensitively with discharge detecting means such as a microphone, a photodetector and an antenna.

Abstract: The invention provides a fiber testing device for thermomechanical testing of fibers which preferably includes a linear step motor coupled to a first fiber gripping jaw. A second fiber gripping jaw is positioned in linear relation to the first gripping jaw and is coupled to a load cell. Advantageously, the apparatus includes a chamber for maintaining a fiber test specimen in a substantially thermally isolated environment during testing of the fiber. A heating means and a cooling means are connected to the chamber. The heating means and cooling means are controlled by a control means which also controls the position of the linear step motor. The fiber testing device of the invention is capable of performing complicated mechanical and thermal fiber testing protocals without operator involvement except for initiation of the testing sequence.

Abstract: For the purpose of establishing the clearing limit of a yarn clearing system, the yarn faults are determined, classified and counted. The parameters reference length and sensitivity are set in relation to the number of the corresponding clearer cuts on an orthogonal coordinate system. A clearing profile is thereby generated which represents the functional correlation between the quantity of all theoretically possible combinations of the yarn clearer setting parameters, and which reveals the number of clearer operations to be expected during clearing of the yarn for any combinations of the setting parameters.

Abstract: An apparatus (20) for testing a specimen sample of fibers includes a frame (22), rotatable drums (60) situated at a first station upon the frame for holding a quantity (86) of fibers, a brush (152) situated at a second station along the frame for brushing the fiber specimen and testing equipment (28) situated at a third station upon the frame for performing a series upon the fiber specimen. A comb (34 or 35) is utilized for gathering the fiber specimen from the quantity of fibers held by the drums, and carriages (122 and 136) are movably mounted upon the frame for transporting the comb between the first, second and third stations of the apparatus. When positioned at the first station, the comb gathers a fiber specimen, and the specimen is carded. When the comb is positioned at the second station, the gathered specimen is brushed by the brush, and when the comb is thereafter moved to the third station, the brushed specimen is tested by the testing equipment.

Abstract: A fiber testing apparatus includes two support members for holding a fiber and a positioning mechanism to facilitate placement of the fiber into engagement with the support members. A translation apparatus moves the two support members apart while a monitor records at least one characteristic of the fiber as it is tensioned. In one embodiment, the two support members are first and second clamps and the positioning apparatus includes first and second suctions oriented to draw the fiber in opposite directions and place the fiber in a substantially linear configuration adjacent to both clamps. In another embodiment, a hook and clamp configuration is utilized, and in yet another embodiment a vacuum groove is employed to facilitate positioning of the fiber.

Abstract: An apparatus for measuring the quantity of fiber tufts during flight thereof, having an impact element provided with an impact face arranged in the flow path of the fiber tuft stream and being exposed for collision with the fiber tufts. The impact face is situated at an oblique angle to the flow direction of the fiber tufts. There is further provided a measuring element operatively connected to the impact element for generating signals representing stresses or excursions of the impact element derived from the collision of fiber tufts with the impact face. An electronic evaluating device is connected to the measuring element for receiving signals therefrom.

Abstract: For use in a spinning mill, the apparatus is used to even up the mass of sliver being conveyed, for manufacturing perfect roving yarns. The evening up takes place by measuring the thickness of the sliver after it has been compressed to a certain volume in a gap between two rollers. One roller is rigidly arranged, whereas the other is supported in a resilient manner or has a resilient portion. Movements by the resilient roller are indicative of the extent of the deviations in the thickness of the conveyed sliver, and the movements of the resilient roller are monitored by a sensor which sends signals for controlling devices for facilitating the evening up the amount of the sliver mass being fed. By means of the arrangement of rollers, the apparatus does not generate oscillations which would alter the measured results from the measuring rollers under certain operational conditions.

Abstract: A number of individual samples from a batch of textile material are tested in the form of a test series. During each test series, at least one type of data obtained for each individual sample is stored digitally, and after n individual samples have been tested this data is displayed in the form of a collective chart containing n suitably arranged individual curves. This type of display does away with the use of a chart recorder with its known disadvantages and enables a printer to be used. Also, since the data can be displayed in the form of a collective chart, pauses between individual measurements, which would otherwise occur due to the relatively low printing speed of the printer, and which would greatly reduce the output of the test installation, do not occur.

Abstract: There are described a process and apparatus for measuring the degree of filament intermingling of an intermingled multifilament yarn. The intermingled yarn is moved through a self-conveying fluid jet (air jet). The yarn substantially fills out the jet channel and emerges from the jet in a virtually tensionless state. Owing to the pressure difference at the jet outlet, noncohesive yarn zones expand explosively in the manner of a balloon. After expansion, the yarn passes before a sensor means, preferably an electronic camera, which detects the lightness differences or light diffraction phenomena due to the yarn filaments and sends as a function thereof a signal to a signal processing means. The method of measurement of the invention makes it possible to obtain very accurate information about the nature of the intermingling (spot type or continuous) and also about the geometry of intermingling (for example number and spacing of intermingling nodes in the case of spot type intermingling).

Abstract: A method for producing multiple fiber data from a plurality of single fiber tests. A plurality of individual fibers are subjected to tension tests such that the individual fibers are elongated tensioned and broken while characteristics of the fiber are monitored. Multiple fiber data are obtained by testing a number of fibers from a sample and superimposing the graphical representation of tensile characteristics of the individual fibers upon one another to obtain a composite representation which constitutes multiple fiber data. Characteristics of individual fibers which may be combined to obtain a composite representation constituting multiple fiber data include such characteristics as tension, elongation and cross-sectional characteristics of the fiber.

Abstract: The invention relates to a method of and apparatus for detecting unwanted material in the form of string or woven fabric in a flow of wanted fiber flocks or in a wanted fiber fleece. To this end, the flock flow is guided through a wave field which detects the presence of unwanted material in the flock flow so that the unwanted material can be separated out in a separator facility. The wave field can be an optical or acoustic wave field. The result obtained can, in addition to the separation of the unwanted material, be displayed in display means and/or recorded.

Abstract: The system contains measurement elements (MK) associated with the workstations, and means (PC) for evaluating the signals supplied by the measurement elements (MK), characteristic parameters being obtained during the evaluation for the individual workstations and analyzed for significant deviations from the corresponding desired values. The desired values are formed from the behavior of a statistically comparable collective. At the beginning of each monitoring operation generalized start values are used for the individual desired values, which are converted during the course of the monitoring into more accurate, absolute values. These are updated continuously and form the core data for an automatic inference process. Consequently, the method of functioning of the system, which can be employed in particular in winding rooms for monitoring automatic spoolers, is automatic and objective, and the evaluation of the measurement results becomes independent of the interpretation of the operating personnel.

Abstract: A sliver measuring device includes a pair of rollers (6, 7) which limit two sides of a rectangular measuring space (3). A third side of the measuring space (3) is closed off by a guide roller (8) or by a guide plate. A measuring element (5) for the thickness or non-uniformity of the sliver is arranged on a fourth side of the measuring space. The rollers (6, 7) serve to compact the sliver in the measuring space. The measuring element (5) is formed by a leaf spring provided with strain gauges. Since the sliver is actively driven at the measuring point, this leads to an increase in the compaction of the sliver and thus to an increase in the measuring accuracy dependent upon the compaction. On the other hand, the inertia of the measuring element is very low.

Abstract: A control system for a spinning machine wherein a nonsteady yarn irregularity is measured on the real time basis and results of the measurement is displayed in a concentrated manner or directly displayed on a package. A computing device for computing a standard deviation from a yarn irregularity signal is provided so that a uniformity of a yarn irregularity is evaluated in addition to a thickness and a length of the yarn irregularity.

Abstract: In order to measure the electromagnetic characteristics of a moving filiform material without cutting the latter and without any risk of a liquid and/or solid pollution introduced by the material disturbing the measurements, an ultra-high frequency cavity (10) is proposed, whose wall (12) is traversed by two facing orifices, in which are placed the two open parts of a dismantlable tubular protective device (26). The slot (24) makes it possible to introduce the filiform material (F) in to the cavity. The device (26) isolates the filiform material from the latter and its production in two parts enables it to be put into place without cutting the material. The protective device (26) is replaced without stopping the measurements and without any pollution being able to enter the cavity.

Abstract: In an automatic textile winder, an origination indicia is associated with each spinning tube supplied to the winder, e.g., in the form of a label, marking, or the like, on or applied to each tube or to a peg-tray carrier therefor. A quality-control device is provided at each winding station to monitor a quality-related parameter of the yarn winding operation. Another device is provided at each winding station in operative association with the respective quality control device for cancelling the indicia of each spinning tube whose yarn satisfies a predetermined value for the quality-related parameter as determined by the quality-control device, but leaving uncancelled the indicia of any spinning tube whose yarn fails to satisfy such quality value. Each spinning tube discharged from the winding stations is delivered to a detection station for reading or otherwise detecting any indicia remaining thereon. In this manner, the origin of inferior or sub-quality yarn can be readily identified.

Abstract: The automatic inspecting apparatus for a yarn joining device comprises devices for judging, when more than predetermined times of measured results within the doffing process are recognized to be abnormal, such, as a defective spindle, for generating an abnormal signal when judged to be abnormal, for setting a joining button of the winding unit to a joining stop position in response to the abnormal signal, and for flickering a lamp associated with the winding unit in response to the abnormal signal.

Abstract: The device contains a measuring gap, which is provided for the passage of the test material, the measuring gap having two side walls each of which is provided with a measuring electrode forming part of a capacitive measuring element. An optical measuring element having a light source arranged on one side of the measuring gap and having a photoelectric element is provided in addition to the capacitive measuring element, and both measuring elements form part of a common measuring head. The fluctuations in accuracy of previous measuring heads having only one measuring element are thereby reduced and automatic checking of the measuring head output can be preformed. In addition, parameters which could not be determined with previous measuring heads can be measured and monitored in accordance with the present invention.