DE174408C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- Λ * 174408 CLASS 52 «. GROUP

JULIUS KÖHLER in LIMBACH i. S.

Patented in the German Empire on February 25, 1905.

The present invention relates to a circular linking machine for producing a single-thread chainstitch seams for hosiery and has the purpose of avoiding skipped stitches, to achieve a smooth run of the machine and to create a seam that is as elastic as possible.

In the previous single-thread circular linking machines, the stitch formation is carried out using the

ίο sewing needle and a catcher running. That Catching the needle thread loop and then presenting the same to the re-piercing The needle causes a compound movement of this catcher. Parts of this movement, z. B. the fall of the catcher must be done very quickly so that the eccentric get steep turns and cause the machine to pound, noisy. In addition, the wear and tear of such eccentrics is great, as a result of which the movement becomes unsafe over time and eventually closes Skipped stitches. The catcher movement also influences the stitch formation in such a way that that there is no sufficient elastic seam, as required for knitted fabrics is.

These drawbacks are now eliminated by the present invention in that for Stitch training a catcher and an engraver is used. which both on the same side of the fabric on which the chain of the chain stitch is to come to be effective come and who present the needle thread loop of the needle so that this after it has penetrated the goods, safely enters the loop.

In the accompanying drawings, Fig. 1 shows the complete machine from the front and to the front Part in longitudinal section,

Fig. 2 shows part of the floor plan, while the

Fig. 3 to 8 illustrate the stitch formation.

The known ring b provided with the needles a (FIGS. 1 and 2) rotates gradually around the disk d carried by an arm c. The needle e of the horizontally movable needle bar / stitches into a stitch of the goods hanging on the opening needles with each stitch . ■

The catcher g (Fig. 1) used here is bent twice so that it forms an upwardly extending approach or a nose which can enter the needle thread loop. The catcher is held by a vertical rod k , which can move up and down, but can also rotate. The first type of movement is given to the rod h by a lever η together with a lifting disk 0. For this purpose, the lever η engages with its pin i in the groove of an adjusting ring k. Below the latter, the rod is provided with a turn, which is enclosed by two mm bolts screwed into the frame. As a result, a rotation also takes place within the raising and lowering of the rod h.

The engraver j? has a tip that attaches itself to one approach that closes the loop of thread

/ ■ '

can capture. This engraver is clamped directly in a lever q which is moved by a circular eccentric r.

The stitch formation now proceeds as follows:

The catcher g is low (Fig. 3). The needle e has penetrated the goods w (correct stitch) and moved back so far that the needle thread forms a loop into which the catcher nose enters from below. As the needle moves further back and the catcher g tries to assume its uppermost position, it simultaneously rotates so that its nose moves in the direction of the viewer, thereby allowing the piercer to easily enter the loop (Fig. 4). .

The needle has now completely receded, the fabric has rotated one stitch in the direction of the arrow χ and the piercer has assumed the lowest position (Fig.5)

By catching and piercing, the loop is expanded in this way and the piercing one Needle presented that this must pierce safely into the loop (Fig. 6).

As the needle advances, the catcher rotates back over the needle and ' descends while the engraver rises (Fig. 7).

Finally, both tools have left the loop, which is now on the needle hangs and is tightened as you proceed (Fig. 8). When repenting the movement of the needle repeats the game again.

Since the catcher g and the stecherp jointly expand and present the needle thread loop, the short jerky movements which are necessary when using only one catcher are avoided, so that the machine runs smoothly. Furthermore, the large loop that is presented to the piercing needle eliminates any skipped stitch, and finally the loop can be held so long that it cannot be completely distorted and therefore forms an elastic chain stitch.

Claims (1)

Patent claim: Round linking machine for the production of a single-thread chain stitch seam, characterized in that a catcher (g) and a stitch (p) on the same side of the fabric on which the chain of the chain stitch seam is to come to lie are effective to avoid skipped stitches and to create an elastic seam and divide themselves into the stitch formation in such a way that the catcher (g) grips the needle thread loop, then, while he continues to rise in the direction of its axis and at the same time rotates around it, presents it to the engraver, who holds it so wide that the needle , after it has penetrated the goods, can safely pierce the loop and only tighten as much thread as is necessary to produce a flawless elastic seam. 1 sheet of drawings.