Method of automatic drawing-in and machine for carrying out the said method
OwnerFabrizio Gironiinventor
Life of this patent
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Abstract
A method and apparatus for carrying out an automatic drawing-in is provided including forming lengths of thread which are double folded. The thread is passed to a corresponding heddle and between corresponding dents of a reed. The threads are leased and placed under tension. Progressively, the various threads which are leased and under tension are moved away from the drawing-in location. Heddles are selected from a plurality of magazines and the heddles are positioned in a drawing-in attitude. The reed is positioned and the dents are spread for passage of the various threads. The warp threads are passed by moving the drawn-in heddles directly from the associated magazines to a heddle frame of a corresponding set of heddle frames. The heddles are always retained in a guide.
Claims17
A method of automatic drawing-in comprising the steps of:
- forming lengths of double folded thread obtained from a thread magazine;
- storing heddles in a plurality of packs;
- selecting a singular heddle from the plurality of packs to be drawn-in passing first a head of each length of double folded thread and then a tail of each length of double folded thread into said selected heddle;
- positioning a reed with a first forward movement at a constant rate to obtain a precise alignment between a vertical axis of a space contained between two dents of the reed and a vertical axis of cross section of a heddle hook;
- passing the head and then the tail of each length of double folded thread between the selected dents of the reed;
- leasing and tensioning the heddled and reeded threads;
- progressively moving the reeded and leased threads away from the drawing-in location passing said drawn-in heddle directly from a track of an associated pack of heddles to a track of a corresponding set of heddle frames while maintaining another heddle retained in a guide.
A machine for automatic leasing, comprising:
- a feeding arrangement for feeding drawing-in threads including supply means for supplying first a head and then a tail of doubled lengths of thread to a heddle hook;
- a magazine of thread providing thread to said supply means;
- an arrangement for feeding in drawing-in threads including a thread puller and a thread clamp having a cutting element, said clamp and cutting element for engaging and cutting pulled thread;
- thread support means for separately supporting two parts of the doubled lengths of thread and for moving the doubled lengths of thread progressively away from a drawing-in region;
- a heddle feeding arrangement including a plurality of heddle magazines having a plurality of adjacent tracks for the passage of pendant heddles, each track extending a length of a corresponding set of a plurality of heddle frames and a multiple deflector with a needle for connecting an associated track of heddles with each of said plurality of heddle frames;
- and
- reed positioning means including a carriage carrying a reed, said reed having vertical dents, said carriage being movable on a horizontal track parallel to said heddle frames, a spreader for opening the dents and an electric motor having a clutch for intermittent advancing of said reed.
Dependencies are inferred from the claim text.