US2547170A - Center selvedge forming device - Google Patents

Description

April-3, 1951 J. PICANOL CENTER SELVEDGE FORMING DEVICE 6 Sheets-Sheet 1 Filed Sept. 30, 1947 5 w m m V .A f r H G. M E m m j April 3, 1951 J. PICANOL 2,547,170

CENTER SELVEDGE FORMING DEVICE Filed Sept. 30, 1947 6 Sheets-Sheet 3 JQL' me Picano l, M Vf/W'OF OZQMJAW April 3, 1951 J, PlCANOL 2,547,170

CENTER SELVEDGE FORMING DEVICE Filed Sept. 30, 1947 6 Sheets-Sheet 5 Aprii 3, 1951 J. PICANOL 2,547,179

CENTER SELVEDGE FORMING DEVICE Filed Sept. 30, 1947 6 Sheets-Sheet 6 Jaime Pzmnol, l/Wf/WO/P PM M l atented Apr. 3, 1951 CENTER SELVEDGE FORMING DE VICE I Jaime Picanol, Ypres, Bel gi u m 7 Application September 30, 1947, Serial No. 777,058

In Belgium November 27,1943 I 1 Section 1, Public Law 690,, August8,'1948 Patent expires November 27, 1963 The'invention relates to a new device for the formation of special selvedge or split in the middle of the fabrics when weaving in one operation a plurality of fabrics of a width which is less than the reedspace of the loom. It isknown 7 that several fabrics of difierent width can be woven on one same loom when between the fabrics, wovennext to each other, a strip without warp yarn has been provided. Later on these fabrics are separated by cutting off the entire piece along the axis of said parts without warp yarnj It is however necessary to provide along the sides thus cut off, a selvedge or split capable to prevent the ravelling of the fabric, which at these places is. unprovided with the normal selvedge which generally exists along the external sides of the fabrics.

Certain devices have already been suggested for the production of such selvedges, which make use of a fixed rod, cut out in sucha way that it represents two fixed needles, each needle having on its .end an eyelet, this fixed rod and those needles cooperating with a movable rod provided with'inclined slits ending on an eyelet, in such a manner that the threads when passing through said slits, are capable of being deplaced'transversely, so as to form a special twilling which willform'the pseudo-selvedge or splits. The latter, as produced by this device, generally has the form of a combination of a straight warp yarn with 'awarp-yarn interwoven between said straight warp-yarn and the successive picks.

The present invention concerns a new device -permitting to realize the selvedges or centreselvedge in a systematic way, providing at the same'time a greater resistance and the possibility of being better adapted to the nature of the fabrics due to the fact that the interweaving of a warp-yarn can be effected along two straight warp yarns and at wish, at each pick, at every two picks, every four picks, etc.

The device manufactured in accordance with the present invention is characterized by a combination of three rods which are placed in juxtaposition, whereby all three of them'carry out a straight, alternative movement in a vertical plane, parallel to the plane of the card.

In the appended drawings:

Figure 1 is a diagram illustrating the weaving of the fabric;

Figures 2 to 5 are diagrammatic perspective views showing the three movable rods separate fifom'each other, and in four difierent positions; Figure 6 is a diagrammatic elevational view of. the weaving loom, showing the position of the device; r a

4 Claims. (Cli 139-54) the same vertical plane.- chainyarns b, c are lowered and the chainyarn a Figure '7 is a lateral view of the loom of Figure 6;

Figures 8, 9 and 10 are diagrams illustrating different center selvedges.

Figure 1 shows that it is possible to provide the centre selvedge, while maintaining straightened the two threads of the chain a b and interweaving a third thread of thechain 0, respectively between the first two and the picks or weftyarn. .,The movements after the execution of the weftdl show that the chain a must be kept elevated, the chain b lowered, whilst the chain's must be lowered, thus coveringthe first two transversely. This transverse covering is ob tained in accordance with the device of the invention, by the displacement of the two chainyarns, a, b with a small transverse movement, the third chainyarn 0 being always. displaced in From then on, the

is raised, and 'this'position is maintained during the formation of the wanted'quantity of picks, in this case three. Immediately afterwards the chainyarns a, b are displaced transversely, but

- in reverse sense, the chainyarn b being raised and the chainyarn a being lowered; in these new positions the same quantity of picks is formed and these successive movements are thus continually repeated. It is sufficient to provide in due time the lowering, raising and the standstill of the chainyarns which are to form the centreselvedge, two of these yarns receiving periodically a little transverse movement, once in one direction, once in the other, the first chainyarn being passed through the eyelet of a needle, which is. carrying out an alternative straight movement. The result is that this needle, places alternately itschain yarnto the left or the right of the first two. The interweaving, forming the centre-selvedge is thus realised.

The device has. beenconceived so that it can realise at the same time two selvedges, respectively, for the adjacent sides o'f the two fabrics which are bein woven simultaneously.

According to the Figures 2, 3, 4 and 5 the devicehas three rods, I, 2 and 3 placed one ,be hind the other andcapable of carrying out an alternative vertical movement. M Q The first 'rod I has an openin 4 out out in such away that it presents two eye- needles 5, 6 of whicheeach point. is directed downwards and has an eyelet respectively I, 8. r r .1 Above the needles a transverse slit 9 has been provided. Each needle receives a warp-yarn C,

third rod 3 has the same slits and the same eye- 7 g lets as the rod 2 but the disposition is reversed, namely, the slits I, ll',;arehrstlypxtending along the longitudinal side of the rod-opposite the longitudinal side of the rod 2 bordered by the slits Ill, ll. These slits F0,-l l';also have at the level of the slits l0, ll adoublecurve, which is displacing them towards the opposite longitudinal side. This seoond part of the 'slits l 0,', H is doubled by the.. stra ight slits 12}, .13. The eyeletsl l, are disposed at thebeginof the double curve ofthe slits ll.

"The Warp-yarns C extend through the transverse opening 9 of the' iirst'rod I,-and"through the (straight slits l2 I2 "and +3, 13 of the rods "2 and 3. *Thewarp-yar-ns b,which extend through the rod' Pbetween the needlesfi, 6= pass through-the slits ill, Il -oi there-c1 2 and the eyelets I4, I 5'" of the" roj'd 3, whilst -'the warp-yarns a go equally through the rod l between 'the needlesp-and' across theeyelets l4, l-5- of the rod 2, and t e slits [0, l l -of' the rods3.

iIt suflices thusto :displace the twotlatter rods in such F31 way thatthroughzthe action of :the curved slits 1 H), :i band .103; l l ':and through; the transverse movement,.. made possible by therieyelets 14,-. i5. and H.315 .thewarp-yarnszmb are being. displaced transversely by .-a :small amount, in such a Way that r the straight displacement; of theznee'dles 5,46 causes-.thezthird Walmyarn c to; be. alternatelyzdispl ccd1 fromleftto right of the .Lfirst one, .thusrproviding a. centreeselvedge as: shown in. the .Fi gures 8,.y9 and: 1 0 whichdifier one fro e t e ro l -by the numb -g ep pk reali be n We success ve mo men Of th ed h t-i -e -th needle s. T ese threegrods l -2 andp3care.situated in asheath 1,5, fixed behind the V harness-fram s .n. Each of these rods is actuated by a cable passing orifpulleys. 19,20, 2!,{22 landmoved by means (if a cam device .23, capable-to operate' in duetime the .required traction ifor the f displacement of saidlrod by a convenientsma'h quantity. iThte warpyarns a, I), c extend from a small iSPQ'ciaI pp inra which umqlls in the same manner; as the weavers beam. r

flt will "be understood 'that,depending-upon the lower branch or the upper "branch-of the curved slits l 0, U which are placed opposite the eyelets 14', t5 the warp-yarns b will be situated at the leftpr"attheright,'i.'f-e.,-'they be placed :left or "right with regard to the point of the needles" 1, B and the latter will thus 'place'the "warp-yarn" 0' at the right or the left of thread b. Similarly, the upper-branch or the lower branch of the curvedslits -i0',- l'|'---which are placed opposite-the "eyelets ME i5, =willplace the'warpyarnn at theleftorat the rig-ht. The transverse movements of the warp-yarns-m b arethlls flefinitely obtained by the stl 'lright ab tiernative movement of the rods and =3.

These movements could =-obviously he caused by all other means "than those described pregiiously. Similarly, f said rods can be provided with other 1 accessories.

4 What I claim is: I 1. In a device for making the cutting portions of slit-up fabrics, the combination of three up and down movable rods, one rod carrying eyeneedles and controlling the up and down move- .ment of .a first pair of Warfilkya o e Of the two other rods having 'means for controlling the .up and down movement of a second pair of warp yarns and, simultaneously, the transverse movementiof :a .third= .p.air of Warp yarns, the second -sec9nd; -pair orwarp yarns and the up and down amovementrof the third pair of warp yarns, means iorsupporting said rods, and means for moving 2. '-In adevice for making the cutting portions of -.slit= -'up fabrics, the combination of three up and down movable rods, one ,rod carrying two downw l i g e =need andwn rqllins the up and down movement of; afirstp'airiofwarp yarns, which .cross said ro'd .at :a. horizontal lit iormed. therein above the eye-needles, saidy turning around -said needles before leaf ing through .the .eyes, .one of the .two 'other'rods having two small. horizontal eyeletsfior imp rt ingan up-andedown.movementsto a second-pair of warp yarns and; also havingtwo vertical double-curved slits for controlling the transverse movementof atthi-rd pair of warpyarns. thesecondone of said .twoo'ther rodsl ha 'n g twowsmall .horizontal .eyelets for imparting up-and down movement wto the gjthirld pair of warp yarns, and twovertical doublecurved slits for controlling the transverse movement of the second pair of warp yarns, mGaIlSYfOIKSIlDPQifU- ing .said rods, and means .ior moving said rods .uprand down.

3.. Ina device forlmalgingythe cutting portions of slit-up fabrics, the cornbination of xthree gp and down movable Lro'ds, one rod carryin .two downwardly: pointing. eyeenee'dles and controlling the up and ..down Ino'vementof affirst pair o f warp. yarns, which .cross ,saidg red at a; hori tal slit -formed therein above the yeye needles, yarns turning around said needlesflbefore'glegrd ing through 1 theeeyes, one .of [the twoother: rods havingtwo-small horizontal eyelets for impart.- in an up-and-down movement to a seconfd pair of wvar-p yarns, and -two .vertical double curved slits --f or ,controlling the. transverse movement :Qf a third pair of .w'arpyarnsythe second Qnejdf said two other rods having two. small horizontal eyelets efor imparting an .upeand-idown movement .to the third pair, of .warp. yarns, and two vertical double-curved islits -f or c ontrolling ithe transverse .movementoft e.second pairi f warp yarns'so thatrthe secondeand.,-third pairof warp yarns are :placed. alternately on ,diff erent sides of the needles, meansior supporting said rqds, and: means. for movingsaid. rods npeand ldown.

4. In -a .-device,for. making the cutting, portions of slit-up; fabrics,- thecombination of three pan'd doW-n movable rods one ro'd .carrying .two downwardly pointing -eye needlessandcontrolling the up-and-down movement. of. a j'flrst pa ir ,of warp yarns, which. .cross said .rddat .afhoriz ontal slit formed there in .above the.-eye;need -les. said yarns turning around said needles'before leading throughttheeeyes, one of the.two..other rods -.-having two vsmall lhorizontal ..eyele,t s...f or impartin an ru qndedown .movement .to ..the second pair .of warp wyaxgnsfland etwro vertical doubleecurved v slits -fem-,coratrolling-.the.transverse movement of a third pair of warp yarns,

/ 5 second one of said two other rods having two small horizontal eyelets for imparting an upand-down movement to a third pair of warp REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,226,361 Niederwerfer May 15, 1917 2,300,281 Barbotto Oct. 27, 1942 FOREIGN PATENTS Number Country Date 10,552 Great Britain of 1888

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