Abstract: An opening roller for opening fibres fed to an open-end spinning machine has a cylindrical shell outwardly from which protrude a plurality of fibre-engaging teeth, each of which has a coating of wear-resistant ceramics or metallic material applied thereto. The teeth are formed as pointed ends of a plurality of pins passing through the cylindrical shell and the coating applied so as to cover the whole surface of each of the pins.The opening roller is provided with a flange extending from each end of the cylindrical shell and the wear-resistant coating may be applied to each of the protruding tooth portions, the outer surface of the cylindrical shell and the inner surface of the flanges.

Abstract: Apparatus is disclosed for winding an elongate fibrous material, such as a sliver or roving, comprising: package tube mounting means to support first and second package tubes in winding positions in transversely spaced parallel relationship; a material delivery arm for delivering material first to one of the package tubes to form a first package and then to the other of the package tubes to form a second package; drive means for rotating the package tubes for winding on material; the delivery arm being arranged during the building of a package to contact the package at a winding-on point which lies in a plane containing the axes of rotation of the two package tubes and to deliver material at the winding-on point direct to the package under a winding tension localized in the region of the winding-on point by the delivery arm; first traversing means for causing relative traversing movement between each package tube and the delivery arm in the direction of the axis of rotation of the tube for building a parallel

Abstract: The apparatus is particularly adapted for detecting breakage, run-out or excessive slackening of running sliver strands passing from a creel to the drafting rolls of a textile drafting machine, and includes reed switches which are actuable by movement, into proximity therewith, of magnet-carrying members which normally are maintained distal from the switches by engagement with the sliver strands. The reed switches are protectively mounted and are so located with respect to the magnet-carrying members as to minimize the number of reed switches required for operation of the apparatus. The channelled mounting for the reed switches also provides separating vane guides for the adjacent running strands of sliver, the guide walls having rounded end protuberances to effect better separation; both the guide elements and magnet-carrying members being coated with a smooth plastic to obviate snagging of sliver.

Abstract: A method of open-end spinning textile yarn provides the steps during spinning of feeding fibres to a spinning means acting to twist the fibres fed thereto into a tail end of a yarn and withdrawing from the spinning means the continuously formed twisted yarn, and the further step following an interruption in spinning and preparatory to restarting spinning of applying with the spinning means stopped a longitudinal reciprocating motion to the tail end of the yarn to remove excess twist therefrom.

Abstract: The present disclosure is directed to an open-end spinning machine for the open-end spinning of textile fibres, in which there are provided a spinning element, a fibre opening roller, means for feeding fibres in the form of a sliver to said opening roller, and fibre conveying means for conveying in discrete form to said spinning element fibres opened by said opening roller. The opening roller comprises a boss portion, an end wall portion extending radially outwardly from said boss portion at one end thereof, and a cylindrical shell portion extending from said wall portion over and in coaxial relation to said boss portion to form an annular cavity between the outer surface of said boss portion, the inner surface of said wall portion and the inner surface of said shell portion.

Abstract: Apparatus for open-end spinning textile yarns comprises fibre feed means, spinning means to receive fibres from the fibre feed means and to spin them into a tail end of yarn for continuous withdrawal of yarn from the spinning means, and yarn withdrawal means to withdraw the yarn along a yarn withdrawal axis to a yarn delivery aperture of the spinning means and to form the yarn into a package. The yarn withdrawal means comprises a package forming assembly and a yarn engaging means. The package forming assembly is operative to form a package of the yarn and has yarn distributing guide means to distribute the yarn on the package. The yarn engaging means is operative to engage the yarn in its passage between the yarn delivery aperture and the yarn distributing guide means.

Abstract: First suction forces of relatively large magnitude and small duration, and second suction forces of relatively small magnitude and large duration, are alternatively applied to the trash outlet of each trash box of a multi-station open-end spinning machine during its operation. The large-magnitude suction forces rapidly evacuate from each box trash previously introduced therein by a beater roll disposed adjacent its inlet. The small-magnitude suction forces discourage escape of the trash from the boxes, pending evacuation thereof. Preferably the small-magnitude suction forces are applied simultaneously and substantially continuously to the outlets of all of the trash boxes, and the large-magnitude suction forces are applied successively to discrete groups of the boxes.

Abstract: In replacing a completed yarn package by an empty bobbin tube in a yarn processing machine, the running yarn delivered to the completed yarn package is severed, the severed yarn is delivered to a yarn collection zone, the running yarn is engaged with an empty bobbin tube without halting delivery of the yarn from the yarn collection zone, the completed yarn package is removed from a bobbin tube support and replaced by the yarn engaged with the empty bobbin tube while the yarn continues to be delivered to the yarn collection zone, and the empty bobbin is rotated to wind on yarn delivered to it to form a package thereon.