Abstract: In a fluid jet loom in general, the loom operation is not stopped immediately after detection of the defective weft yarn, resulting unavoidably in the insertion of the next weft yarn. In this regard, the present invention provides a method for disposal of the defective weft yarn in a fluid jet loom which consists in temporarily disabling the weft yarn cutting function of a weft yarn cutter provided to the weft yarn inserting nozzle upon detection of defective weft yarn insertion, and subsequently stopping the loom operation.

Abstract: A method for treating a weft yarn upon stoppage of a shuttleless loom comprising:stopping a shuttleless loom based on a stop signal;bringing the warp yarns in an open shed condition between the time of switching off said shuttleless loom and the time of restarting said shuttleless loom, so that a weft yarn which has been picked just before the stoppage of said shuttleless loom is released from its crossed condition by said warp yarns;automatically inserting a pushing out device into a clearance between said weft yarn and a preceding weft yarn to separate said weft yarn from a cloth; andremoving said separated weft yarn.

Abstract: An apparatus for locating a servicing device which travels along a parent textile machine, such as a spinning frame, having a plurality of stations and stops at any designated station of the parent machine to there perform a servicing operation, such as yarn piecing or cleaning by use of fluid, such as compressed air or vacuum, supplied from a fluid source provided separately from the servicing device. The apparatus comprises, on each station of the parent machine, a stationary connector communicating with the fluid source and a locating guide member having a locating guide groove therein, and, on the servicing device, an air cylinder, a locating rod actuated by the cylinder toward and away from the locating guide member and engageable with the guide groove and a communicating member movable together with the locating rod and engageable with the stationary connector.

Abstract: In the weft inserting device of the invention, a pair of main nozzles are supported by a change lever and the motion of a cam lever operatively linked with movable loom parts for reciprocation thereby is transmitted to said change lever. The timing of motion transmission and interruption is controlled by a timing control unit. According to a preferred embodiment, the control unit is a microcomputer and the timing setting can be changed by changing the weft yarn selection program stored in the microcomputer.

Abstract: In an air jet loom including a weft inserting apparatus constructed in accordance with the principles of this invention, a weft is inserted into a warp shed by being ejected, together with compressed air, from an ejection nozzle of the weft inserting apparatus. When the weft passes through a weft guide passage in the ejection nozzle, it is adapted to deviate from the center or axis of at least a portion of the weft guide passage since an air discharge hole is provided in the ejection nozzle in fluid communication with the atmosphere so as to open into said portion of the weft guide passage.

Abstract: A dust-removing mechanism in an open-end spinning frame has a dust-removing chamber into which a dust-removing opening opens, the dust-removing opening being defined by a rear wall disposed upstream in the direction of rotation of the combing roller and having an edge and a front wall disposed downstream in the direction, there being an angle .alpha. formed between first and second lines passing through the front and rear wall edges and the center of the combing roller, an angle .beta. formed between a third line passing through the center of the combing roller and the center of an opening in the rotor and a fourth line passing through the center of the combing roller perpendicularly to the third line, an angle .UPSILON. formed between a surface of the front wall and a fifth line extending parallel to the fourth line through the front wall edge, and an angle .delta.

Abstract: A method and an apparatus for automatically controlling the winding tension of the roving in a bobbin lead roving machine is disclosed. The mean bobbin winding diameter D.sub.B, bobbin r.p.m. N.sub.B and the flyer r.p.m. N.sub.F are measured automatically for one or more operating spindles, and a mathematical equation (N.sub.B /N.sub.F -1).times.D.sub.B =K representative of winding conditions for the roving is solved by automatic operation based upon the above measured values. When the value K thus obtained exceeds a preset control limit, the bobbin r.p.m. is decreased or increased automatically for correcting the value K towards its central setting for automatically correcting the winding tension of the roving.

Abstract: In a jet loom in which a weft yarn is inserted through the warp shed by a jet of fluid such as air, the thickness of the weft yarn is detected prior to insertion continuously or at intervals with a yarn thickness detector, and the pressure of ejection of the fluid jet is controlled by a result of such detection so as to be optimum for the weft insertion. The jet of fluid is ejected from a nozzle member under the controlled pressure to insert the weft yarn reliably without insertion failures.