Abstract: According to the method for characterizing fancy yarn, at least one characteristic of the fancy yarn is scanned along the longitudinal direction of the fancy yarn. Values of the scanning are evaluated and the results of the evaluation are outputted. The results of the evaluation are the fancy yarn parameters such as base yarn mass, base yarn diameter, slub distance, mass increase (?M) of a slub, slub diameter increase, slub diameter, slub length (LE) and/or slub total mass. The evaluation includes a smoothing or idealization of the scanning values, e.g. an idealization of the webs (91, 91?) as horizontal stretches and of the slubs (92, 92?) as trapeziums. the idealized course of the curve may be subtracted from the original course of the curve in order to obtain information on the slubs on the one hand, and on the virtual base yarn on the other hand. The occurring data quantity may be reduced by specifying parameters of the idealized course of the curve.

Abstract: The device for examining a solid, elongate product to be tested contains a measurement capacitor with a measurement part-electrode and guard electrodes electrically insulated therefrom. The device further comprises means for applying an alternating voltage to the measurement capacitor for the purpose of generating an alternating electrical field in the measurement capacitor. The guard electrodes are set up for active guarding, in that, with regard to the alternating voltage, they are kept at the same potential as the measurement part-electrode. Differently thick products to be tested may be tested with one and the same measurement head thanks to the active guarding. The signal noise is reduced, the output signal is largely independent of the position of the product to be tested in the transverse direction, and the measurement head has small geometric dimensions.

Abstract: The invention relates to a device for scanning a thread, which is displaceable in the longitudinal direction thereof inside a measuring slot, by means of an optical beam emitted by a light source. The device includes a receiver of light reflected on the thread and a unit for processing electrical signals received by the receiver. The aim of the invention is to develop a small-sized device which is easy to operate and which makes it possible to detect foreign matter contained in the thread in a most selective manner at a high sensitivity. For this purpose, the light emission in at least two wavelength ranges is carried out by means of a light source, with these wavelength ranges being determined by two main wavelengths.

Abstract: The invention relates to a method for detecting and classifying foreign material in an inspection lot of textile fibers that is moved lengthwise. The aim of the invention is to allow for the simultaneous inspection of the inspection lot with regard to a plurality of properties and to allow for the detection of a foreign material and for its classification in a simple manner while taking due consideration of all properties measured. According to the invention, values for deviations of these properties from a standard are detected and stored for at least two properties that are influenced by the foreign material. The values for the deviations are eliminated according to a predetermined rule except for the values of one property. A value for the deviation and a value for the length of the deviation on the inspection lot resulting from the values of the remaining property is detected and the foreign material is classified according to this deviation and length.

Abstract: An apparatus for measuring a moisture content value within a volume. A frequency generator generates at least one source signal at frequencies of no more than about one kilohertz. Probes are disposed with surfaces in physical contact with the volume, where no direct current flows between the probes through the volume. One of the probes is electrically connected to the frequency generator as a source probe, and adapted to receive the source signal and emit the source signal into the volume, thereby creating an electrical field having characteristics that are dependent at least in part on a moisture content of the volume. Another of the probes operates as a receiver probe for sensing the electrical field and producing an output signal having an output property that is dependent at least in part on the source signal and the moisture content within the volume.

Abstract: The invention relates to a method of processing signals obtained from scanning textile fabrics (1). To provide a method which makes it possible to evaluate the faults (4, 5, 6) in a fabric in a highly differentiated way and which results in targeted actions on the basis of the faults that are recognised, first of all, for values of parameters, value ranges which define categories of faults in the fabric are determined. For categories of faults in the fabric, the distribution of faults in the fabric is then to be determined and, as a function-of the category determined and the distribution of the faults in the fabric, an action is to be performed in connection with the fabric.

Abstract: The invention relates to a device for optically monitoring a woven web of endless fabric on a mechanical weaving loom or a winding device. The monitoring device includes a holding element and extends over the entire width of the woven web of endless fabric. The monitoring device is directly in contact with the woven web of endless fabric and is held indirectly on the mechanical weaving loom, in the region between a delivering roller and the winding of the web of endless fabric onto a cloth beam or a large roller parallel to the delivery roller. The holding element has an axle located on the monitoring device and an axle located on the mechanical weaving loom, the two axles extending parallel to each other and being interconnected by a pivoting arm.

Abstract: A fiber testing station. Electrically conductive first fiber retaining means engage first ends of fibers, where the fibers extend in substantially one direction from the first fiber retaining means to distal second ends of the retained fibers. The first fiber retaining means are electrically isolated from the fiber testing station. First length measurement means measure first relaxed lengths of the retained fibers between the first fiber retaining means and the second ends of the retained fibers. Electrically conductive second fiber retaining means engage the second ends of the retained fibers. The second fiber retaining means are electrically isolated from the fiber testing station. Moisture measurement means take electrical measurements along the retained fibers between the first fiber retaining means and the second fiber retaining means, and thereby determine a moisture content of the retained fibers.

Abstract: The invention relates to a method for detecting and classifying foreign material in an inspection lot of textile fibers that is moved lengthwise. The aim of the invention is to allow for the simultaneous inspection of the inspection lot with regard to a plurality of properties and to allow for the detection of a foreign material and for its classification in a simple manner while taking due consideration of all properties measured. According to the invention, values for deviations of these properties from a standard are detected and stored for at least two properties that are influenced by the foreign material. The values for the deviations are eliminated according to a predetermined rule except for the values of one property. A value for the deviation and a value for the length of the deviation on the inspection lot resulting from the values of the remaining property is detected and the foreign material is classified according to this deviation and length.

Abstract: The invention relates to a device for scanning a thread, which is displaceable in the longitudinal direction thereof inside a measuring slot, by means of an optical beam emitted by a light source. The device includes a receiver of light reflected on the thread and a unit for processing electrical signals received by the receiver. The aim of the invention is to develop a small-sized device which is easy to operate and which makes it possible to detect foreign matter contained in the thread in a most selective manner at a high sensitivity. For this purpose, the light emission in at least two wavelength ranges is carried out by means of a light source, with these wavelength ranges being determined by two main wavelengths.

Abstract: A process is disclosed for evaluating data obtained from textile fabrics. In order to devise a process which allows data obtained from textile fabrics to be easily compared, assessed in a differentiated manner as to their significance and evaluated, the data are determined in a section (3a,3b) of the surface of the fabric, sorted according to at least two parameters (13,14) and represented in an image (12, 30) as a function of the parameters.

Abstract: A method for creating markings on a planar textile body and a thread-like body for carrying out the method. According to the invention, the markings on a planar textile body can survive all following process steps and permits a clear marking of position on the textile surface. During production of the planar body, a thread-like body is included, which comprises a support with a filament wound around the support. The support is divided into marked zones and mark-free zones.

Abstract: The invention relates to a device for detecting foreign substances in a thread using a detector which line-scans the thread, the latter being lit by an illumination element. The aim of the invention is to provide a means of continuously testing the thread with good resolution and at a high speed. To this end, the inventive device consists of a compact unit made up of a sensor or a detector, an objective and an illumination element. These elements have a common axis and the illumination element enables the thread to be illuminated with a very high light intensity. To this end, the illumination element (1) is hemispherical and has light sources which are distributed across the hemisphere (5).

Abstract: The invention relates to a process and a device for adjusting clearing limits, defects in the yarn being cut out and a clearing limit separating defects which are to be cut out from defects which are not to be cut out. To achieve an improved, simplified and rapid adjustment of the clearing limit so the effect thereof in the end product can also be predicted more accurately, starting from the clearing limit, displays of defects in the end product are to be produced which make an effect of the defects in the end product visible.

Abstract: In a method and a device for identifying foreign bodies in a base textile material, the base textile material is subjected to beams and the beams reflected on the base material are detected and converted into an electrical signal. In order to detect foreign bodies in the material in a targeted manner and to differentiate them from each other, so all or only the unwanted foreign bodies can be, for example, eliminated, the beams have two defined and different wavelength ranges and the reflected beams are simultaneously and jointly detected from the two wavelength ranges. Preferably, a first defined wavelength range can be selected in such a way that the beams reflected on the base material provide random values in the electrical signal, for at least two different foreign bodies, and another defined wavelength range for the beams is selected in such a way that the reflected beams provide an electrical signal for the two foreign bodies, in a different ratio from the first wavelength range.

Abstract: The invention relates to a method and a device for identifying and expelling foreign material in a stream of fibres consisting of compressed textile fibres. To provide a method and a device which continuously check the stream of fibres in industrial use also at high speeds, the checking conditions being constant over a long period, the stream of fibres is compressed in portions (62), driven by positive fit, optically detected and inspected for the presence of foreign material. The device has at least one roller-shaped element (14, 15) provided with teeth (21, 22) for engagement in the stream of fibres, between which teeth (21, 22) light-transmitting elements (23, 24) are arranged.

Abstract: A first parameter is detected on a fast moving strip or yarn with a wave field, and a first signal indicating potentially present contaminants or impurities is generated. This first parameter preferably detects reflection properties that can be detected on the surface of the product. A further parameter is detected on the strip or yarn in a field, and a second signal is generated which also indicates contaminants or impurities. This second parameter preferably detects properties such as mass or diameter of the yarn or strip. Evaluations of the first signal and the second signal that occur at the same location on the product are considered together, and labeled to indicate the specific type of impurity or contaminant that they represent. Using empirical analysis, evaluation specifications can be selected to identify a group of impurities which are most likely to include a specific impurity of interest, e.g. non-vegetable contaminants.

Abstract: The invention relates to a method and a device for detecting foreign matter in a fibre composite moving in the longitudinal direction and consisting substantially of wool or cotton fibres. To provide an improved, easier and rapid method of detecting polypropylene in fibres intended for textile products the fibre composite is irradiated with infrared light (2, 3) in a defined wavelength range, the reflected light filtered (13) and the filtered fraction of the light measured (11). Values which significantly deviate from a base value indicate the presence of foreign matter.