Abstract: Circular knitting machine for the manufacture of knit wares of hosiery with combed-in fibers, having at least one needle bed possessing knitting needles and having at least one carding machine which possesses a feed apparatus for a band of fibers, a combing-in zone, through which the knitting needles pass, for the contact less insertions of fibers into the knitting needles, and a separating apparatus for separating the band of fibers into individual fibers. The separating device comprises a separating drum that can be driven at high peripheral speed and is provided with a fitting (card wires) for which a drive mechanism is provided that is independent of the knitting machine drive mechanism.

Abstract: A pivoted latch needly having stem segments or budge portions of a height of eleven tenths of a millimeter and a length of at least eight millimeters.

Abstract: The invention relates to a weaving loom which is provided with a selection device allowing the programmed selection of that weft thread among a plurality of threads which has to be inserted into the weaving shed by means of an insertion device. The selection device comprises a program control device and a positioning device controlled by such program control device, which positioning device moves the weft thread carrier so that only the selected weft thread is brought to an active position ready to be inserted into the weaving shed. The selection device comprises a microcomputer provided with a microprocessor, a read-only memory, a pattern computer and a keyboard intended for programming and operating. The positioning device is provided with electromagnets controlled by program control signals of the program control device, which electromagnets control the positioning of the weft thread carriers so as to move the weft threads from the passive positions to the active positions and vice-versa.

Abstract: A method and apparatus for piecing a yarn in a spinning rotor of an open end spinning device is disclosed wherein an increased quantity of fibers is momentarily fed into the spinning rotor after the yarn is returned to the spinning rotor, whereupon the fiber supply is reduced to the normal supply quantity. Preferably, during termination of the spinning process, fibers are stored between a supply device and a fiber opening device which on commencing the piecing process are suddenly released, while at the same time the fiber supply resumes at the normal rate. For effecting the method an abutment surface (110) is preferably provided in a feed channel (11) on the side of a clamping point (15) of a clamping lever (5) for acting on the feed channel (11) facing away from the opening roller (2).

Abstract: A method and apparatus for piecing up yarn on an apparatus for producing wrap yarn. The device includes delivery rolls, a hollow spindle, takeup rolls, and a wind up device. A binding thread is fed from a bobbin carried on the hollow spindle for wrapping around a fiber bundle being fed through the delivery rolls and the hollow spindle. A clamping device and yarn guide is provided for positioning a piecing thread into the nip of the delivery rolls for being joined with said fiber bundle upon breaking of the wrap yarn.

Abstract: A method and apparatus of detecting faulty operations of spinning units of an open-end spinning machine by monitoring the faults appearing in the yarn being produced by the machine and generating a fault signal responsive thereto. Another speed responsive signal is produced responsive to the speed that the yarn is being delivered from the spinning compartment of the machine. The fault signal is fed to a variable gain amplifier which has its gain controlled by the speed responsive signal. The signal produced by the amplifier is then differentiated, shaped, and integrated. The integrated signal is, in turn, compared with a threshold value for determining when the faults in the yarn exceed a predetermined level.

Abstract: A method and apparatus for cleaning fibrous material which is fed in the form of a sliver by a delivery device to an opening roller carried within a housing which opens the fibrous material and feeds the opened fibers to an open-end spinning device. A dust separator opening is provided in the housing between the delivery device and the open-end spinning device. A source of suction is connected to the dust-separator opening and a gauze-like covering extends over the dust-separator opening for maintaining the fibrous material within the effective range of the opening roller as the fibrous material is carried thereover during the opening process. The dust from the fibrous material is withdrawn through the gauze-like covering and the dust-separator opening by the source of suction. The housing can also be provided with a trash separator opening having a separator edge positioned adjacent thereto for separating trash from the fibrous material simultaneously while the dust is being removed therefrom.

Abstract: A method and apparatus for detecting the faulty working of spinning units of an open-end spinning machine by monitoring the faults in yarn as it is fed from the spinning machine. An electrical signal is produced by a sensor indicating faults appearing in the yarn. Another signal of predetermined frequency corresponding to the speed of delivery of the yarn from the spinning machines is generated. The electrical signal produced by the sensor is electrically multiplied by the signal of predetermined frequency for producing a differential signal. This differential signal is filtered, shaped and integrated and subsequently compared with a preset threshold value for producing a signal indicating when the occurrence of faults exceed a predetermined threshold. This signal can be used for stopping the spinning unit.

Abstract: A core thread is combined with staple fiber in a spinning rotor by feeding the core thread to form a loop in the fiber collection surface while feeding and withdrawing the core thread in a manner to maintain it substantially linear, and the stable fiber is spun into an outer yarn shroud twisted about the axis of the core thread. The core thread feed tube is located at one side of and spaced from a diametral plane through the fiber collection surface, and the fiber feed tube is located at the opposite side of and spaced from such plane through the fiber collection surface. A loop is formed in the core thread by delaying startup of drawoff rollers for a predetermined interval after startup of core thread supply rollers, and the loop is laid on the circumference of the fiber collection surface by rotation of the spinning rotor.

Abstract: A method and apparatus for monitoring the production of spun yarn in an open end rotor spinning machine. The spun yarn is withdrawn from the open end rotor spinning machine at a constant rate of speed. As a result of changes in mass of the yarn created by flaws therein, the centrifugal force within the rotor varies causing the tension in the yarn to vary accordingly. As the yarn is withdrawn from the rotor, it passes around a spring loaded arm which is displaced according to the centrifugal force applied to the yarn. The spring loaded arm is operately connected to a balance bridge circuit which generates an output signal corresponding to the displacement thereof. The output signal from the balance circuit is then fed to an integrator which integrates the signal to produce a slowly varying integrated reference signal.

Abstract: Transmission of the thread twist-forming force to the thread end is facilitated by a finger mounted eccentrically in the bore of the thread drawoff tube. The thread, which is rotated about the circumference of the bore, periodically engages the finger, which finger plucks the thread away from the tube wall and momentarily relieves the bearing force between the thread and the drawoff tube at the tube infeed end. The finger is spaced inwardly from the tube infeed end and may be a pin projecting radially inward from the tube wall or an offset wire extending parallel to but eccentrically of the tube axis.

Abstract: Yarn of a fineness between Nm 60 and Nm 250 comprises fibres from the fur of angora rabbits. The fibres are pretreated with a two-component composition of an antistatic agent and an agent for increasing the adhesability of the fibres. The pretreated fibres, with or without other fibres such as synthetic fibres, are spun together with an uninterrupted carrier thread of a cross-section up to one third of the cross-section of the spun yarn.

Abstract: Fibers are carried to a spinning rotor from a fiber-resolving device by a translational fluid medium, such as air, which is first accelerated to orient the fibers. Carrier fluid next is maintained at constant speed and laminar flow to deliver the oriented fibers to a rotating laminar fluid in the region adjacent to the inner wall of the spinning rotor. The acceleration and velocity of the translational fluid is effected by a feed tube having a frustoconical infeed section, tapered toward a cylindrical outfeed section.