US2250229A - Device for the production of looped fabrics - Google Patents

Device for the production of looped fabrics Download PDF

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Publication number
US2250229A
US2250229A US347545A US34754540A US2250229A US 2250229 A US2250229 A US 2250229A US 347545 A US347545 A US 347545A US 34754540 A US34754540 A US 34754540A US 2250229 A US2250229 A US 2250229A
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United States
Prior art keywords
needles
loops
needle
thread
row
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Expired - Lifetime
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US347545A
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English (en)
Inventor
Luchsinger Ernst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FIRM LUCHSINGER S HANDELSGESEL
FIRM LUCHSINGER'S HANDELSGESELLSCHAFT
Original Assignee
FIRM LUCHSINGER S HANDELSGESEL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of US2250229A publication Critical patent/US2250229A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B39/00—Knitting processes, apparatus or machines not otherwise provided for

Definitions

  • This invention relates to a device for producing looped fabrics which is provided with two sets of needles and wherein advancing the needles of one set serves to form Ia gap with the aid of the second set of needles so that the thereupon inserted work thread will be pulled out into zigzag loop formation by the subsequent withdrawal ⁇ of the advanced needles so as to permit continuing the working afterthe first thread layer has been worked by the second set of needles.
  • a flexible hook band is provided for the second set of needles, the hooks of which serve for receiving the thread loops formed by this set of needles during the start of the operation so that these loops can be ⁇ thrown by means of the band over thread loops that are subsequently formed on similar sets of needles.
  • the aforesaid flexible hook band is ⁇ therefore utilized even for forming the rst row of loops, and, after a second row of loops has been formed, the hook band is raised up,whereupon the downward movement of the same, starting fromone end and proceeding in a direction toward the other end, that is, gradually, serves to throw the rst row Iof loops upon the second row of loops of the corresponding set of needles, this being vtherefore rendered possible without the expenditure of additional power; the set of needles carrying this row of loops being thereupon turned around 180 on the apparatus through agency of its support member; a new row of loops then being formed on this set of needles, and the cycle is then repeated.
  • the hook band from the time of formation of the rst row of loops remains uninterruptedly hooked thereon until a plurality of rows of loops is formed, and it is only after a workpiece of certain length Vhas been produced that the hook bank is unhooked therefrom unless it is desir-ed to leave it therein; the hook band prevents the finished loop structurefrorn rolling together.
  • the use of va exible hook band also permits operations to be conducted with stiff threads, Ithat is, it permits the production of correspondingly more rigid loops.
  • the hook band may be of very simple construction as by providing suitable hooks at one edge of the needle carrier.
  • the sets of needles consist of simple shaft needles so Ithat any needle carrier now in practical use 'may be utilized, and hence fine loops can also be produced;
  • FIG. 1 is a top plan View of the ⁇ device according to the invention
  • Fig.. 2 shows a cross-section thereof
  • Fig. 3 is a partial view, as seen from above, for ⁇ explaining the beginnin-g of the work.
  • Fig. 3a shows a cross-section of Fig. 3
  • Fig. 4 shows a partial cross-section of Vthe device in a diferent working condition compared with that shown in Eig. 2;
  • Fig. 5. is :a parti-al View, -as seen from above, for .explaining the continuation of the work in the condition of operationof vthe device asshown in Fig. v4;
  • Fig. 5a shows a cross-section of Fig. 5.
  • Figs.6 anda illustrate in a top plan view and acorresponding cross-section, respectively, a fur- A'theriworking stage
  • Figs. 7 and 7a ⁇ illustrate in a top plan View and a corresponding cross section, respectively, still another workingstage
  • Fig. 8 is a lpartial cross-section of the device in the condition thereof shown in Figs, "I and 7a;
  • Figs. 9 and 9a illustrate in a top plan viewand a corresponding cross-section, respectively, a still further ⁇ working stage
  • Figs. l0 and 10a illustrate in a .top plan View and a corresponding cross-section, respectively, another working stage
  • Figs. 1-1-to 13 are partial views of modifications of an individual working-member.
  • rI'he device is provided with an oblong casing I in the top of which a longitudinal slot 2 is arranged Which serves for displaceably guiding a handle 3 which lis secured, by means of a guide loop 4to a longitudinal bar 5, the ends of which are fastened to the upper portion of the casing I, beyond the slot 2.
  • the handle 3 protrudes through the longitudinal slot 2 of the casing I by means of a flat neck 6 which carries a plate I which is positioned within the casing I and is provid-ed with control cams on two opposite sides there-of serving for actuating needles lr6 which are displaceably arranged in the casing I by means of a lower guide I'l and an upper guide 1'8.
  • Theseneedles can be displaced transversely of the casing I by corresponding displacements of a sli-de which is composed of the par-ts 3, 4, 6 and 'I and is guided on the longitudinal bar v5.
  • a band 8 is connected, which may, by Way of example, consist of steel, and which passes over a guide roller positioned adjacent to one of the -ends 'of the casing I, the other end of the band being attached to a tension spring II which passes over a guide roller and tends to retain rthe handle 3 in the end position shown on the left hand side of Fig. 1.
  • the needles I6 are advanced so as to project out of the casing I to a greater extent, as shown in dotted lines in Fig. 2.
  • VBy shifting the handle 3 in the opposite direction the needles are retracted toward the casing again, that is, into the full line position shown in Fig. 2.
  • the numeral I9 designates the needles of a cooperative set which is arranged on a bar said needles and bar thus forming a needle rake 29.
  • This needle rake is inserted at its ends in two angular holders 2I which are united, by means Iof a web 23, into a sin-glie member, which is secured to the casing I by screws 24.
  • the needle set I9 is associated with an auxiliary member in the form of a band 60 which is provided along one of its longitudinal margins with hooks 6I the spacing of which corresponds to that of the needles I9. As shown in Fig. 1, one end of the Yband 69 is attached to the outermost right hand needle I9 (Fig. 1) by means of a loop 62.
  • the working is started with the needles I6 in retracted position relative to the casing I, when the working thread isv slightly tied to that immovable left hand needle I9 of the needle rake 20 and the corresponding hook 6I of the band 69 where the looping is .to begin, as indicated in Fig. 1, the thread being simply passed about the respective needle I9 and the associated hook 6I.
  • the handle 3 is returned into the left hand position, whereby the needles I6 are retracted by the control plate I.
  • the working thread 25 is drawn out into Zig-zag shaped loops 21 of uniform tension, as illustrated in Fig. 6, so that the thread then bears against the individual needles IS, I9 positioned within the range of operation of the two needle sets.
  • the thread loops 26 formed about the needles I9 are shifted upwardly on the needles I9 by accordingly folding and moving the band 69 upwardly in the direction of the arrow shown in Fig.
  • the needle rake 29 is removed from the casing I in the upward direction and then turned through an angle of 180 and inserted in the holders 2
  • the band 66 may be removed from the work in that the interlacing of the loops into stitches can then be effected by means of a bar 63 which, as shown in Figs. 11 to 13, is provided with a toothed longitudinal edge for engagement with the looped fabric from below, as indicated in chain-dotted lines in Fig. 10a forY detaching the fabric from the needles I9 by accordingly folding and moving the band 60 upwardly, as previously described.
  • the needle rake 2D is turned end for end through an angle of relative to the casing, so that the looped fabric is again positioned in front.
  • the bar 63 is provided with pointed teeth 64, whereas Fig. l2 shows rounded off teeth 65, and Fig. 13 depicts teeth with intervening tooth gaps of different depths forming a repeat of pattern in the row of teeth, or serrations.
  • the needle rake 20 is preferably secured in position in the holders 2I by the arrangement of a spring pressed locking ball on each vertical Yengagement face of the holders, for the purpose of engaging with a corresponding recess in the needle rake 20.
  • an insert may be arranged for the purpose of varying the distance between the needles I9 on the rake 20 from the needles I6 in the advanced position of the latter in order that accordingly wider or narrower stitches may be effected.
  • two needles I6 enter, in the advanced position 4of these needles, between each two adjacent needles I9, but the arrangement may also be such that, for example, between each two adjacent needles I9 on the rake 29 only one neede I6 or more than two needles I6 penetrate while advancing.
  • a rigid member may be used for carrying the hooks 6I, such as, for example, a hook carrier bar or the like.
  • a stationary needle set for the formation of a rst row of loops thereon by means of the working thread
  • a second displaceable needle set for forming a thread receiving gap between said two needle sets by conjointly advancing the needles of said second set between said stationary needles of said iirst set
  • control means for advancing and retracting the needles of said second set -between the needles of said first set
  • an auxiliary knock-over member associated with said first needle set for depositing said first row of loops on further loops having been formed on said needles of said first set, for effecting stitches by interlacing said rst loops with said further loops.
  • a stationary needle set for the formation of a first row of loops thereon by means of the working thread
  • a second displaceable needle set for forming a thread receiving gap between said two needle sets by conjointly advancing the needles of said second set between said stationary needles of said first set
  • control means for advancing and retracting the needles of said second set between the needles of said first set
  • an auxiliary knock-over member associated with said first needle set
  • thread holding elements arranged on said member, said holding elements being spaced apart from each other distances equalling the spacings of said needles of said first needle set, for depositing said iirst row of loops on further loops having been formed on said needles of said first set, for effecting stitches by interlacing said first loops with said further loops.
  • a stationary needle set for the formation of a first row of loops thereon by means of the working thread
  • a second di-splaceable needle set for forming a thread receiving gap between said two needle sets by conjointly advancing the needles of said second set between said stationary needles of said first set
  • control means for advancing and retracting the needles of said second set between the needles of said rst set
  • an auxiliary knock-over member asso'- ciated with said rst needle set
  • hooks arranged on said member, said hooks being spaced apart from each other intervals equalling the intervals between the needles of said first needle set, for depositing said first row of loops on further loops having been formed on said needles of said rst set, for effecting stitches by interlacing said first loops with said further loops.
  • a stationary needle set for the formation of a first row of loops thereon by means of the working thread
  • a second displaceable needle set for forming a thread receiving gap between said two needle sets by conjointly advancing the needles of said second set between said stationary needles of said first set
  • control means for advancing and retracting the needles of said second set between the needles of said rst set
  • a band serving as a knock-over member associated with said first needle set for depositing said first row of loops on further loops having been formed on said needles of said first set, for effecting stitches by interlacing said first loops with said further loops.
  • a stationary needle set for the formation of a first row of loops thereon by means of the working thread
  • a second dsplaceable needle set for forming a thread receiving gap between said two needle sets by conjointly advancing the needles of said second set between said stationary needles of said first set
  • control means for advancing and retracting the needles of said second set between the needles of said first set
  • a bar shaped element serving as a knock-over member associated with said first needle set for depositing said rst row of loops on further loops having been formed on said needles of said rst set, for effecting stitches by interlacing said rst loops with said further loops.
  • a stationary needle set for the formation of a first row of loops thereon by means of the working thread
  • a second displaceable needle set for forming a thread receiving gap between said two needle sets by conjointly advancing the needles of said second set between said stationary needles of said first set
  • control means for advancing and retracting the needles of said second set between the needles of said rst set
  • a bar shaped element serving as a knock-over member, and a serrated longitudinal edge on said element for depositing said first row of loops on further loops having been formed on said needles of said rst set, for effecting stitches by interlacing said first loops with said further loops.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US347545A 1939-08-04 1940-07-25 Device for the production of looped fabrics Expired - Lifetime US2250229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2250229X 1939-08-04

Publications (1)

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US2250229A true US2250229A (en) 1941-07-22

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Family Applications (1)

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US347545A Expired - Lifetime US2250229A (en) 1939-08-04 1940-07-25 Device for the production of looped fabrics

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US (1) US2250229A (de)
CH (1) CH214389A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501045A (en) * 1946-05-31 1950-03-21 Groszmann Jose Device for forming looped mesh fabrics
US2609675A (en) * 1949-02-22 1952-09-09 Tarafa Josefina Domenech Automatic apparatus for the manufacture by hand of all kinds of knitted fabrics
US2621498A (en) * 1948-06-19 1952-12-16 Palic Trading Corp Straight-bar knitting machine
US2690658A (en) * 1948-06-18 1954-10-05 Luchsinger Ernst Knitting machine
RU2585571C1 (ru) * 2015-03-06 2016-05-27 Дмитрий Валерьевич Марченков Блок направляющих элементов и устройство петлеобразования трикотажного полотна, использующее указанный блок

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501045A (en) * 1946-05-31 1950-03-21 Groszmann Jose Device for forming looped mesh fabrics
US2690658A (en) * 1948-06-18 1954-10-05 Luchsinger Ernst Knitting machine
US2621498A (en) * 1948-06-19 1952-12-16 Palic Trading Corp Straight-bar knitting machine
US2609675A (en) * 1949-02-22 1952-09-09 Tarafa Josefina Domenech Automatic apparatus for the manufacture by hand of all kinds of knitted fabrics
RU2585571C1 (ru) * 2015-03-06 2016-05-27 Дмитрий Валерьевич Марченков Блок направляющих элементов и устройство петлеобразования трикотажного полотна, использующее указанный блок

Also Published As

Publication number Publication date
CH214389A (de) 1941-04-30

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