US1770578A - Flat-knitting frame - Google Patents

Flat-knitting frame Download PDF

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Publication number
US1770578A
US1770578A US268275A US26827528A US1770578A US 1770578 A US1770578 A US 1770578A US 268275 A US268275 A US 268275A US 26827528 A US26827528 A US 26827528A US 1770578 A US1770578 A US 1770578A
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Prior art keywords
needle
covering
point
groove
needles
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Expired - Lifetime
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US268275A
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Lohs Max
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Seyfert & Donner
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Seyfert & Donner
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B11/00Straight-bar knitting machines with fixed needles
    • D04B11/18Straight-bar knitting machines with fixed needles for producing patterned fabrics
    • D04B11/22Straight-bar knitting machines with fixed needles for producing patterned fabrics with stitch patterns

Definitions

  • My invention relates to flat knitting frames and more especially to the needles forming part of such machines.
  • attempts have been made 5 to improve the flatknitting frames substantially in such a manner, as to increase their output, make the 100 s finer and render the running of the mac ine steadier. This is difiicult on account of the use of bearded w needles and of the resser-bar, for the flexible beard and consequently the length of the needle must not be made below a certain minimum as otherwise it would forfeit the elasticity required for the ressing.
  • Fig. 1 is a vertical section of the needle together and the 01 bar showing one of the improved needles and one of the covering points cooperating therewith, the needle and covering point being shown in ino erative position.
  • Fi s. 2-6-i lustrate the several parts of the evice in difierent positions.
  • Fig. 2 showing the making of new loops, 1 the bar carrying the covering points being inoperative.
  • Fi 3 shows how the covering point cov-. so ers t e hook of the needle.
  • Fig.4 shows the going down of the needle bar and covering point bar.
  • Fig. 5 illustrates the slipping of the old mesh over the loop
  • I on Fig. 6 illustrates the formation of the new mesh.
  • n is the needle and p is the covering point.
  • the covering-- point is movable toward the needle to close the hook andreceive and hold the previously formed loop to assist in knocking over.
  • the covering point p moves towardsthe needle and covers the hook of the same. the hook disappearing in the groove w of the covering point.
  • the needle n is formed also with a small groove y. Now both the needle and covering oint move downwardly d meshtthereby slips, on to the hook of the covering point, (Fig. 4).
  • Fig. 5 shows the position ofthe needle 01. and the covering; "9o ointp after a row of loops has been finishe he needle n has been lowered from the po-f sition illustrated in Fig. 5 and the covering point g) has been raised.
  • the needle and the covering point are now ready to return into the osition shown in Fig. 1, for starting anot er row of loops.
  • the sinking o the loops ta es place not below the groove 3 of the improved needle, but we close below the end of the hook.
  • the needle moves, it is true, down to below the lead sinkers, durin the renewed pushin forward the heads of he'needles have to d their way between the lead sinkers.
  • the shortening of the needles ensures that the needlesv become more stable and that the needle hooks do not break off so easily as in the case of needles havin lon beards.
  • the shortening go of the needles as urther the advantage that the fineness of the loop can be increased, and that the needle stroke or travel is considerably shortened, so that the machine can be i worked more quickly and its running becomes steadier.
  • I clainizp 1 In a machine for knittin plain fabric a needle having a non-resilient 00k, a covering point movable toward the needle to close the hook and receive" and hold the previously formed loop to assist in knocking over, said needle having a groove, and a downward extension on said covering point adapted to fit in said groove.
  • a needle having a non-resilient book; a covering oint movable, toward the needle to close t e hook and receive and hold the pre viously formed loop to assist in knocking 5 over, said needle having a groove, and a downward extension on said covering point adapted to fit in said groove, said downward extension having a groove adapted to receive the hook of said hooked needle.

Description

July 15, 1930. r e s 1,770,578
I FLAT KNITTING FRAME Filed April 7, 1928 Patented July 15. 1930 'UNIJTED STATES PATENT OFFIQE.
max none, or MIA'IARO, srsnv, ASBIGNOR 'ro snvrnar a nonnanfor'cannnxrz,
. GERMANY rnsr-xnrrrme reams 1 Application filed April 7, 1928, Serial 110. $6 8,275, and in Germany June 7,.
' My invention relates to flat knitting frames and more especially to the needles forming part of such machines. In recent times attempts have been made 5 to improve the flatknitting frames substantially in such a manner, as to increase their output, make the 100 s finer and render the running of the mac ine steadier. This is difiicult on account of the use of bearded w needles and of the resser-bar, for the flexible beard and consequently the length of the needle must not be made below a certain minimum as otherwise it would forfeit the elasticity required for the ressing. Moreis over, there is another obstac e to the shortening of the needle, namely the fact that the laying of the threads and formation of loops in the old type oi machine must take place below the groove ofthe needle into which so the end of the beard is pressed. Further the distance from the end of the cove to the point at which the sinking of t e loop takes place, must be so great as to prevent the upper oint ornib of the sinker, from being cau 't in the groove of the needle, which is easi y liable to occur since during the sink ing of the loops by the jack sinkers, each two needles are at firstslightly pressed against each other by the thread, as is well known.
so lhe present invention ofi'ers the meansfor renderm possible thesinking and the formation o loops everi when the needle is shortened to a considerable extent.
. It consists in the application and use of a 35. solid needle with a short beard and of a covering point cooperating with it in the forma- 'tion of the loops. The needle, beingsolid, i. e. non-perforated, can be made as thin as any ordinary needle. It will further be 40 shown that the movements of the needle bars and the covering-point bars are much shorter than the movements of similar bars in the knitting machines now in use, thus allowing a reater speed of working.
46 n the drawings afiixed to this specification and forming part thereof a device embodying my invention is illustrated diagrammatically by way of example.
In t e drawings: to Fig. 1 is a vertical section of the needle together and the 01 bar showing one of the improved needles and one of the covering points cooperating therewith, the needle and covering point being shown in ino erative position.
Fi s. 2-6-i lustrate the several parts of the evice in difierent positions.
Fig. 2 showing the making of new loops, 1 the bar carrying the covering points being inoperative.
Fi 3 shows how the covering point cov-. so ers t e hook of the needle. Y Y
Fig.4 shows the going down of the needle bar and covering point bar.
Fig. 5 illustrates the slipping of the old mesh over the loop, and I on Fig. 6 illustrates the formation of the new mesh.
Referring to the drawings, n is the needle and p is the covering point. The covering-- point is movable toward the needle to close the hook andreceive and hold the previously formed loop to assist in knocking over. After the thread has been distributed to the needles by means of the yarn guide and after 100 s l have been formed by means of the sin ers e (Fig. 2), the covering point p (Fig. 3) moves towardsthe needle and covers the hook of the same. the hook disappearing in the groove w of the covering point. In order to enable the end of the covering point to disappear also, the needle n is formed also with a small groove y. Now both the needle and covering oint move downwardly d meshtthereby slips, on to the hook of the covering point, (Fig. 4). 35 Hereafter the coverin point p moves away from the needle in suc manner that the old mesh passes the hook 'ofthe needle and a newmesh is'fornied (Fig. 5). Fig. ,6 shows the position ofthe needle 01. and the covering; "9o ointp after a row of loops has been finishe he needle n has been lowered from the po-f sition illustrated in Fig. 5 and the covering point g) has been raised. The needle and the covering point are now ready to return into the osition shown in Fig. 1, for starting anot er row of loops. I
In usin a covering, point as shown, the sinking o the loops ta es place not below the groove 3 of the improved needle, but we close below the end of the hook. The danger of the crushing of the needles by the nib of the sinker no longer exists, as during its movement, the sinker cannot come-in contact with the groove of the needle at all. The oove g, which in theimproved needle is situated within the range of the nose (1 of the sinker, is not likely to catch on the sinker, as during the laying of the thread, the nee- 10 dles are always between'the sinkers. During the knocking. over of the loops, the needle moves, it is true, down to below the lead sinkers, durin the renewed pushin forward the heads of he'needles have to d their way between the lead sinkers.- The shortening of the needles ensures that the needlesv become more stable and that the needle hooks do not break off so easily as in the case of needles havin lon beards. The shortening go of the needles as urther the advantage that the fineness of the loop can be increased, and that the needle stroke or travel is considerably shortened, so that the machine can be i worked more quickly and its running becomes steadier.
I wish it to be understood that I do no desire to be limited to the exact details of construction shown and described for obvious modifications will occur to a person skilled in the art. 7
I clainizp 1. In a machine for knittin plain fabric a needle having a non-resilient 00k, a covering point movable toward the needle to close the hook and receive" and hold the previously formed loop to assist in knocking over, said needle having a groove, and a downward extension on said covering point adapted to fit in said groove.
2. In a machine for knitting plainfabric a needle having a non-resilient book; a covering oint movable, toward the needle to close t e hook and receive and hold the pre viously formed loop to assist in knocking 5 over, said needle having a groove, and a downward extension on said covering point adapted to fit in said groove, said downward extension having a groove adapted to receive the hook of said hooked needle.
to In testimony whereofI afiix m signature.
MA LOHS.
US268275A 1927-06-07 1928-04-07 Flat-knitting frame Expired - Lifetime US1770578A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519875A (en) * 1948-02-12 1950-08-22 Dexdale Hosiery Mills Straight knitting machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519875A (en) * 1948-02-12 1950-08-22 Dexdale Hosiery Mills Straight knitting machine

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