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: 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: This method serves to optimize and maintain constant fiber-quality in automated mixing of bales having fibers of differing qualities. The bales (1a, . . . 1k, . . . 1n) are moved into the conveyance path (3) of a removal member (4) of a bale-removing device (2) and a fiber sample is automatically withdrawn in each case from the bale (1k) processed by the removal member (4) and is analyzed in measuring and control instrument (5). The analytical values so measured are continuously compared by a program in the measuring and control instrument (5) with nominal values and the comparison measurements so obtained in a continuous manner are used to maintain the mixing values by instructing the bale-removing device (2) to remove corresponding quantities from the particular bales (1a, . . . 1k, . . . 1n) evincing different qualities.

Abstract: In a process for preparing and fixing samples of fibres to be analysed optically, a plurality of fibres (5) to be analysed is laid on a first transparent plate (2), the first plate (2) and the fibres (5) lying on it are covered by a second transparent plate (1) and the two plates (1,2) are pressed together and simultaneously displaced coplanarly with respect to each other to form a fixed sample composed of parallel, longitudinally aligned fibres (5).

Abstract: A thread guide for yarn cleaners has a disk-like body (1) with a front plate (11) a rear plate (12) and a generally V-shaped cutout (2) of which radial surfaces (3, 4) serve as thread entry surfaces and of which the center (5) serves as thread-guide floor. The thread-guide floor (5) has a first hump (6) serving to restrict thread motion vertically from a central thread path (17), the right-hand thread entry surface (3) has a second hump (7) serving to limit lateral thread motion to the right of path (17) and the left-hand thread entry (4) has a third hump (8) serving as to limit lateral thread motion to the left of the path, the highest elevations (points of greatest protrusion) (13, 14, 15) of the three humps (6, 7, 8) being axially offset from each other.

Abstract: A separation apparatus for fiber webs (6) with parallelized fiber positions wound on a processing drum (4) includes an arm (1) rocking relative to the processing drum, the arm carrying a separation comb (13). The arm and its separation comb (13) are mounted for movement along and controlled by the shape of a separation cam (3) implementing the separation of the fiber web (6) wound on the processing drum (4) at a specified site and the unwinding of the separated fiber web from the processing drum (4) by the free end of the fiber web (6) along a generatrix of the surface of the processing drum (4).

Abstract: A disordered material of staple fibers is separated into individual uniform and parallel fibers to prepare representative, textile samples. A piece of the original fiber material (6) to be analyzed is moved into a space between two mutually parallel disks (1, 2) which are held at a constant distance from each other and are equipped with sets of mutually engaging needles with serrate profiles (3, 4) which penetrate the fiber material (6). The two disks (1, 2) are moved relative to each other while preserving their mutual spacing and the needles linearly resolve the fiber material (6) into its individual fibers. A sample clamp (5) is used to remove a random, orthogonal cross-sectional sample (11), which sample (11) substantially matches by its composition that of the original fiber material (6) and accordingly is suitable for carrying out diverse quality tests.

Abstract: A method for making slivers of fibers with parallelized fibers from sets of tangled or matted fibers includes the steps of winding a pre-measured amount of partially oriented fiber material onto a first carding drum (3), detaching the annular fiber web from the first carding drum (3) at a specific site and separating the web from the drum. The separated fiber web is wound off the first carding drum by the detached free end of the web, and the fiber web is stretched. The stretched fiber web is wound onto a second carding drum (8) folded over onto itself, and the doubled fiber web is detached from the second carding drum at a specific site. The detached fiber web is wound off the second carding drum (8) by the detached free end of the fiber web and the fiber web is again stretched. The stretched fiber web is wound onto the first carding drum and the winding and stretching steps are repeated until satisfactory parallelization has taken place, whereupon the iteration cycle is ended.

Abstract: To provide a more representative output signal on electro-optical transducers scanning a traveling filament, such as a textile thread than heretofore possible, a beam of light is passed to the filament and the light reflected therefrom is analyzed and transduced into an electrical signal, so that light passing laterally of the filament is eliminated from the pick-up to provide an output signal in the pick-up representative only of the portion of the thread which is actually illuminated.

Abstract: To prevent periodically recurring thickened portions of thread from open end spinning machines, a thread thickness sensing signal is conducted to a mono stable blocking multivibrator having an unstable blocked time just under, for example, ninety percent, of the time of pull off of thread during one revolution of the turbine, so that the distance of thread passing through the sensor during the unstable time is just slightly less than the circumference of the spinning turbine of the open end spinning machine. If other thickened portions result from a specific circumferential point of the turbine, resulting in periodic defects, the mono stable multivibrator will be triggered again and again; the trigger signals is summed, for example, by an integrator and if the sum of the pulses reach a certain value, a defect signal is generated, for example, stopping the machine. Before being applied to the mono stable multivibrator, the signals are preferably dynamically limited.

Abstract: A pair of pressure disks through which the thread may pass are pressed together by a controllable electromagnetic force generated by a pressure electromagnet acting on at least one of the disks. The thread is passed over an oscillating lever which is urged by the tension of the thread from a first position to a deflected position and, when in the deflected position, closing an electrical contact which opens the circuit to the pressure electromagnet acting on the disks to return the lever to the first position, thus opening the contact. The magnetic force of a lever reset magnet is adjustable.

Abstract: To provide a readily separable electrical in-line connection in which mechanical stress on the terminal itself is relieved, one terminal strip or lug, in a flat strip form, is engaged by another terminal lug having a bent-over tab, so that, in cross section, the other terminal element is U-shaped; one of the terminal elements has a hole punched into it, and the other has a projecting pin, fitting into the hole. The two terminal elements are assembled together by inserting the pin in the hole, with the terminal elements respectively aligned at a slight angle, and they are then rotated so that the U-shaped bent-over tab engages around the other terminal element, to make a secure electrical connection which is also mechanically stable.

Abstract: A sensing lever, preferably a double-arm lever, is journalled over a fulcrum; one arm is engaged by the thread to be supervised, and further connected to operate an electrical switch; the other arm is subject to electromagnetic force derived from an interrupted, pulsed electromagnet. Pulsed operation of the electromagnet can be obtained by a signal derived from the switch of the lever itself, or from an extraneous source; upon attraction by the magnet, the contacts are opened; during a pulse gap, the thread tension depresses the lever, thus closing the contacts; the lever will, therefore, continuously vibrate and presence of an a-c signal across the switches will be indicative of: (a) presence of thread; (b) thread tension below a predetermined limit (excessive tension would overcome the pulsed reset force of the electromagnet); and (c) proper operation (jamming of the lever would likewise result in a d-c output from the switch).