Rieter Machine Works, Ltd.

Maschinenfabrik Rieter Ag

Georg Symon

Felix Graf

Ruedi Schneeberger

A yarn guide member is driven by an entrainment member in a predetermined direction of movement of a belt run of a belt with which there is connected the entrainment member. In a stroke reversal zone the entrainment member is reversed in its movement by the belt moving around a reversing roller and there is thus released the yarn guide member from entraining engagement by the entrainment member. The yarn guide member, while then in so-to-speak free flight, strikes a housing wall operative as an impact wall. The yarn guide member thus changes its traversing direction. After having impacted the impact wall the yarn guide member returns to the entrainment vicinity of the entrainment member which in the meantime has begun its movement along the belt run now located opposite to the first mentioned belt run as the entrainment member rotates around the reversing roller. The impingement of the yarn guide member is taken up mechanically by the impact wall and thus does not affect the entrainment member, and the yarn also is positively guided at the reversal positions.

Traversing apparatus for traversing a longitudinally moving yarn which

Winding of threads into cross-wound packages is effected by a moving traverse mechanism of a main traverse mechanism by which the thread is laid on to the package. The thread runs in a preliminary traverse mechanism between two elongated guide members which form therebetween a gap. The thread extends transverse to the guide members. The thread is additionally influenced by the preliminary traverse mechanism by means of air streams flowing in the longitudinal direction of the gap, these air streams being controlled with respect to timing. In this way, the thread is relatively uniformly tensioned, so that the operation of laying the thread into the package can be performed by the main traverse mechanism with greater precision. In the preliminary traverse mechanism, the thread practically does not come into contact with any fixed components, since no such components are required for its guidance and within the gap the thread is located in a kind of air cushion. Thus the thread is treated gently while there is no wear of moving parts in the preliminary traverse mechanism.

Method and apparatus for forming cross-wound packages

The apparatus for interlacing a multi-filament yarn within an interlacing passage comprises a body member containing at least one substantially spherical recess for receiving a substantially spherical air jet or blow nozzle element selectively movable in predetermined directions to provide two-dimensional adjustability thereof. Due to this selective movability of the substantially spherical air jet or blow nozzle element, there exists the possibility of controllably moving the air stream issuing from the air jet or blow nozzle element so as to interlace the filaments of the multi-filament yarn. The air stream can be moved within a predetermined operating range in order to thereby optimize the interlacing of the multi-filament yarn.

Apparatus for interlacing a multi-filament yarn

The apparatus for interlacing a multi-filament yarn within an interlacing passage comprises a slide member movable at essentially right angles to the interlacing passage. The slide member has a jet or blow nozzle opening into the interlacing passage. The slide member is selectively movable in predetermined directions. Due to this movability of the slide member there exists the possibility of moving the airstream issuing from the jet or blow nozzle so as to interlace the filaments of the multi-filament yarn. The airstream can be moved within a predetermined operating range in order to thereby optimize the interlacing of the multi-filament yarn. The movement of the slide member is effected by means of a pressure pin or bolt which displaces the slide member against the force of a compression spring.

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Winterthur, Switzerland

Georg Symon