DE118710C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

When making sack-like extensions in goods using retractable needles on the known knitting machines set up for this purpose, gaps or openings arise in the goods when the stitch-holding needles are disengaged in their knock-off position, i.e. in the position in which their hooks under the knock-off edge χ (Fig. 1) of the needle bed. If the thread reverses to the next row formation with a needle disengaged in this way (Fig. 9 and 9a, the disengaged needles are dotted in Fig. 9), the gaps y arise between the adjacent wales, since there are no sinker loops between the needle loops α ¹ α? α ⁸ α ⁴ ... are present, and these gaps are perceptible in the goods as a row of gaps yy (FIG. 9 a) when the needles are later indented again and continue to work.

This row lies on both sides in the oblique lines \ (Fig. 10) when the needles are disengaged from both sides in the order i, 2, 3 ..., as shown e.g. B. happens in the heel formation.

To avoid this inconvenience, it is necessary to replace the missing sinker stitches between a ¹ and α ² , α ³ and α ^4, etc. and this is now done by first turning the thread, as shown in Fig. 8, each time can still be placed on the last disengaged needle to the old stitch and forms the loop β, one half of which then crosses and fills the gap y (Fig. 8 a).

For this, however, it is also necessary that each such needle protrudes a little beyond the knock-off edge χ (Fig. 1) so that the thread can be placed in the open hook. For this purpose, each needle at the top, close to the tongue, still has a working foot α (FIGS. 1, 2 and 3) and above the row of needles at ff ¹ devices are attached which can detect α and move the needle. These devices are shown in more detail in FIGS. 1 to 7, specifically showing:

1 shows a cross section through the needle bed and the guide rails along the line b - d (FIG. 2) with a side view of the auxiliary locks;

Fig. 2 is a Aufrifs of the needle bed and cross section of the sleeve locks according to the line Z-w_ (Fig. 1);

3 shows a basic outline of FIG. 2, but with the complete auxiliary locks;

4 shows the auxiliary locks in elevation;

Figures 5 and 6 are a side view of thumbs g and z;

7 shows the bearing sleeve for bolts g * ² with the two thumbs g and z; . ■

Fig. 8 Laying of the thread to prevent gaps when knitting bag-like extensions ;

8a item of goods without row of gaps;

Fig. 9 Laying the thread when knitting bag-like extensions without a device to prevent gaps;

9a item of goods with row of gaps;

Fig. 10 Form of a by disengaging and re-engaging piece of goods created with stitch-holding needles.

In the fixed rail e (Fig. 1, 2 and 3), in which the Schlofsrahmen ν leads, are two sliding rails cc ¹ , each of which is moved by one of the screw spindles attached to both sides of the machine. These rails cc ¹ carry the

Bearing sleeves ff ¹ each with a rotatable bolt g ¹ (Fig. 7), which is held by a spring h / 2 ¹ so that a protruding thumb gg ¹ (Fig. I, 2, 3, 6 and 7) backwards on the bearing foot the sleeve f rests. At the other end of each pin has a second g ² projecting thumb ii ^1, which from a Hülfsschlofs the Ma (Figures 1, 2, -3, 5, and ^7.): Can be made machine. The rail q (Fig. 1), which is attached to the lock frame ν or connects the locks of a multi-part knitting machine, i.e. forms the carriage of the usual knitting machine, carries an angle piece k (clearly in Fig. I, otherwise also in Fig. 3 and 4) and in this hang from two bolts mm ¹ two auxiliary triangles 0 and u and 0 ¹ M ¹ , of which ο is connected to u by η and o ¹ to u ^l by n ¹ , i.e. each forms a single piece ( In Fig. ι M ¹ W ¹ O ¹ on the bolt m ^l can be clearly seen). These auxiliary locks ο η u and ο ¹ η ¹ μ ¹ are moved to the side with the usual lock frame ν of the machine and their triangles can act on the thumbs ii ^{1 of} the bolts g ² and on the needle feet a , if the locks hang deep enough, such as B. 0 ¹ W ¹ M ¹ in Fig. 1 and 3. The heights of the two auxiliary locks are changed by the fact that a bolt beveled on both sides i. (Fig. 3 and 4) located under, the plates r or r is ¹ mm, the bolt ¹ pushes and lifts one or the other Castle of. In Fig. 3, for. B. raised m with its auxiliary castle and lowered m ^1; in the upper position, however, the auxiliary triangles do not meet either the thumbs ii ¹ or the needle feet a. If t (Fig. 3) ^{moves back to the left below r 1} , a spring ρ pushes the castle down. The bolt t is attached to the rod s , which is slidably located in the machine, moves back and forth with the lock, but can be held up by anvil on adjusting iron, so it can be moved sideways against the auxiliary locks. If it hits to the right when it is being pushed out, it moves to the left and lifts up 772 ¹ M ¹ W ¹ O ¹ (Fig. 3); if it hits to the left, it goes to the right and moves out m uno . In the middle of the slide stroke, however, an adjusting iron always brings the rod s with bolt t into its central position, in which it keeps both auxiliary locks disengaged at the top. The effect of such an auxiliary lock is as follows: When the slide is pushed to the right (Fig. 2 and 3), the preceding auxiliary lock is mu no disengaged, but the following is in the working position below, and its upper triangle w ¹ hits the thumb z ' ¹ des first bolt and turns it so that the other thumb g ¹ grips the working foot α of the needle and pushes the needle a little bit out of the bed (Fig. 2, top left, the protruding needle). Now the thread guide places the thread on this needle as the slide lift continues; but soon the lower auxiliary triangle o ¹ comes to the working foot α and pushes the needle back into the bed, which has to be done, because otherwise it makes it difficult to insert the thread into the next working needles. The thread laying (Fig. 8) is hereby achieved. As soon as the auxiliary lock o ¹ u ^l has pushed the needle back at a , it is also disengaged in the middle of the slide stroke and both auxiliary locks do not hit the next following bolt (Fig. 2 and 3) fi . The carriage comes right side to its stroke end, so shifts st to the left, and holds the left-Hülfsschlofs (Fig. 3) 0 ¹ M ¹ is disengaged, but lowers the right lying 0 u and moves it a; so that when drawers to the right now this Hülfsschlofs acts on a needle lying on the right side of the goods, it raises to lay the thread and lowers again, 'as indicated above by o ^l u ^l. In FIG. 10, therefore, 0 ¹ M ¹ has first worked on needle 1 on the left, then ou on needle 1 on the right, then again o ¹ w ¹ on needle 2 on the left, and so on.

Fig. Ι shows how triangle u ^! the thumb i ^l rotated and like thumb g ¹ by twisting the needle at α a piece. pushed out of bed. The auxiliary locks are only active during the disengagement of the individual needles in the first working period of the expansion; they remain inactive for the remainder of the period of re-engagement.

Claims (1)

Patent Claim: ', Lamb'sehe knitting machine with a device for the automatic production of sack-like extensions in the goods using retractable needles, characterized in that, in order to avoid a row of gaps in the goods, each stitch-holding needle disengaged by sinking its working foot into the needle bed before the beginning of the next stitch row by means of one special needle foot (a) attacking thumb (g ¹ or gj, which is influenced by an auxiliary lock (u ¹ and u) through the mediation of a second thumb (i ^{1 and} i) sitting on the same pin fg ^ J with the former, in its axial direction is pushed up so far that it grips the thread as a loop and, after taking up the loop, is lowered again through the same auxiliary lock (0 ¹ or 0). 1 sheet of drawings.