US1989056A - Harness for cross weaving - Google Patents

Description

1935- J. J. KAUFMANN HARNESS FOR CROSS WEAVING Filed Jan. 9, 1955 Patented Jan. 22, 1935 UNITED STATES PATENT OFFICE i e 1,989,056 Q 7 v HARNESS FOR (moss WEAVING w v John Jacob Kaufmann,Elkins Park., Pa. ,assignors to Steel Heddle Manufacturing Company, Phil- 7 adelph ia, 2a., a corporation of Pennsylvania]; 3. Application-January 9, 1933, Serial No f 650, 880

g9 olaifiis." (011139 52) My invention relates to metallic loom harness for use in that method of weavingknown as cross weaving, sometimes called doupwezving; or leno weaving, in which the warp threads are 5 crossed or twistedabouteaclr other at as many points in the shed as may be desirable, either for a succession ofpicks, or according to a pattern or design to be produced. A

This invention relates more particularly to the construction and formation of the guideor' lifting heddles which are employed to raise" the doup needles and thus cause each of the doup warps controlled thereby to be disposed on one side'or the other of its ground warp as required. The principal object of my invention is to pro vide a metal harness for crossweaving in which possibility of fouling of the warp threads will be eliminated, which will be simple, durable, andef cient for various types ofcross weaving, and which will be relativelyinexpensive in construction.

With the foregoing object in view, myinvention contemplates the provision of a doup needle, preferably punched from sheet metal, and a pair of lifting heddles of novel conformation for each doup needle, each of whichheddle is made from a single strip of thin flat metal.

My present invention insuresthe utmost freedom in the shedding of the warp','as well as sew:

ing to guide the warp during the sheddingaction so that the same will not be caught on the top of the doup needle or jammed between the needles and the lifting raised. e

The nature and characteristic features of my present invention will be more readily understood from the following description, taken inconnection with the accompanying drawing forming part hereof, in which:

s Figure 1 is an elevational view of one pair of heddles, and the associated parts, for controlling a pair of warp ends; 7

' Fig. 2 is an enlarged detail view-of the central;

portion thereof; v Fig. 3 is a side elevation of that portion of the structure shown in Fig. 2; and

Fig. 4 is a face View of a preferred form of doup needle employed in association withthe lifting heddles forcontrolling the doup warp.

It will of course be understood that the description and drawing herein contained are illustrative merely, and that various changes and modifications may be made in the-structure disclosed without departing from the spirit 'ofthe invention. i

Referring to thedrawing, in the particular embodiment of my invention therein shown, 10 is the doup needle, which is preferably made byheddles and thus improperly the control of thedoup warp 13 is locate'dJjThe ground warp l4 extendsfreely between the pair of lifting heddles, and is .eontrolled,"in the event that it is desired-to raise'and; lower the same,fby separate harness( notshown)'. The outer margin 15 of the eye end 11 of the doup need1e"10 is arched or-curved;, and' the'jinner under margins 16 thereof'arealso curved, in gothie format-'- tion, meeting in a central-apex;

Extending from the eye end ll of the doup needle 10 are two legs lfl, which terminate in enlarged portions 18,ea cliof which is provided with a slot19,'-forconnection ofthe; doup needle I 10 with the needle'lowering means, such for example 'as the bars or rods 20-which extend through the slots 19.

There are provided two lifting heddles 21, each of 1 which is formed'from asingle strip of thin flat metal. The upper portion 22 and the lower portion 23 of each of the lifting heddles are each preferably disposed in a plane parallel to the plane of the doup needle '10, and alsoparallel to the general longitudinal extension-of the warp ends 13' and I4 controlled by the harness.

The central part of each lifting heddle 21 comprises an upper'straight-portion '24, an intermediate inclined ofiset portion; 25, and a lower straight portion 26,'-al1 disposedin'planes at right angles to the planesof the upperand lower por tions of the heddle proper, this arrangement being secured by-imparting a quartertwist to the strip fromwhich the heddle is formed, at the points 27 and 28." The'central part'of-the heddle'21 is slotted, as at 29,- this slot'extending' entirely' through the inclined offset portion of the central part of the heddle, and also extending upwardly a short distance into the portion 24; and downwardly a shortdistance into the portion26.f

Near the upper and lower extremities or each of the heddles 21 there are provided slotsor mortises 30, for mounting the lifting heddles 21 on the harness frame rodsor-barsBI; I The twisting-of the central portions of thehe'ddle out of the plane of the up'pe'r and lower -portions thereof provides'a: guard or guide which eir tends-over the eyeend 11 of thedoup needle and prevents the ground warp 14 frombeing' caug'ht on the horizontal portion of; the curvedmargin- 15 of the eye end ll ofthe doup needle 10. The guard which is thus provided will also serve to prevent the warp ends which pass between adjacent sets of heddles; from becoming lodged or caught on the eyeend ofjthe doup needle.

Bythe provision of'the'slotted offset portion 25 of the liftingheddle, an -appreciable space 32 will be secured hetween the side margin ofthe leg portion 17 of the (10 11 needle 10 and the 'up-' per p'ortions 22 and 24 of the lifting-heddle which remains in the lowered position, thus preventing the ground warp 14 from being gripped between the doup needle and the upper portions 22 and 24 of oneof the lifting heddles when the other is raised, wh h wou d imp p rly ai e he ground warp and cause a mispick.

By reason of the githic formation of the inner margins 16 of the eye end 11 of the doup needle 10, said eye end will be properly: centered with respect to the lifting heddle, and in this manner the portions 24, 25 and 26 1} the heddle-will be so positioned with respect to the eye end 11 of the doup needle 10, as the liftinghed'dle is raised, as o guide ny f the w endsw ieh would tendto lodge on the top of the needle to such posi: tion that the same will readily slide down the'side of t needle- F rthermore. c oss. w a ing; ha n ss co s ruc ed as aforesaid will'be free in its action, thus atly easing he sheddinsfme ionl a the ths heddle's a e eeti. ilyfra seci and low red,

Iclaim:

1, harn ss ie' er s w erih t-a li tin he i e ma e f a, single la strip metal, the certtral part of the heddle comprising an upper s a ht r on an nte med at e setnort en, n a w r traight s rtie-1 th centr p rt be n twisted with' esneet tev e upper and lowerarts here s he s veral Pertiene th reof are d p s n P nes each a nse t t e gene a lehgi ud el exten ieh e h were ds t erewto provide a guard to guide the warp over the t n.- e t e deep need e the cen ra part o t e le e ng lo t d in eextension o he oup nee er threwsh- In rness tor er sw e a i ti h ddie mad of. a ngle fla a a r me al havin its ppe nd ow r post n s each p e in a p ane p ra le v to. he eneral. lensi ud na at n-- Sien of h n. nds, c ntral par e heheddle, e ng w sted with-respect to the pp andlewe pa ts em ris'm; a u pe t ai ht perti r aner ediate nset portion nds, o e tra ght nert ent. and he ee tralna of: heddle bei g. sl tedie the. extensien of he doup: n e le erethroughr I d- I harn ss tereressw a i tin he l die e e12 a, ing e flat s r p ime a ts. upper and lower portions eaclr disposed a; P ne pa a e t he eehsm ensi nshnel exte Sieh of h re ehdsthe cen ra part; or he heddle e s otte or the ex ension or the ime n edle he e hreush and heme tw sted with respect. tov the lah Q heurrerend lewernen tions of the edd e and he sick n; the centra P r in r $it ene e het h ower end hereof Will engage and li t he need e when he hed le is d, I

In nessfier: cross a litine; li d-- dle made of asihele la str rf'metah having, its 99t and we ne tie sd sh sed i a pla p e t the seh l eneit denal. ex ent-- Sien of the we e e ds h central par of: the h d e pr ing n upper s a ht; no tien, an intermediate, se ne eh, and: a. e er strai h po t n, ll d sn s d n lan s, t ri -h angles to. the Planes: o h unn re d nwe por i ns of: t e h dle proper he e y o p ov de a. sue-rd. ta ui e w re est r he en f; he deup. n edles the en re-l ert e th heddl ibeih la ed er he xt ns e s Qt he deep n edle he thr ue n limit ess.- ielre ees weav n a doup. eedle. hav ng an hro h hich dean were ex: ends, se dhe d1e be n e it ih me al,. a h iror lifting; he dle eeehinede. et a si s-1e flat strip of metal, the central part of the heddle comprising an upper straight portion, an intere iate of p ti nd a. lower strai h p tion, the,- central part being twisted with respect to the upper and lower parts whereby the several portions thereof are disposed in planes each at an angle to the general longitudinal extension of the warp ends thereby to provide a guard to guide the warp over the top of the doup needle, and the central part of the heddle being slotted for the extension of the doup needle therethrough.

6. In harness for cross Weaving, a doup needle having an eye. through which the doup warp extends,, said needle being made of thin flat metal, a pair of lifting heddles each made of a single fiat strip of metal havingits upperand lower portions each disposed in a plane parallel to the general longitudinal extension of the warp ends, the central part of the heddle being twisted with respect, to the upper and lower parts and comprising an upper straight portion, an intermedi-. ate offset portion, and a lower straight portion, and the central part oi the heddle being slotted for the extension of the, doup needle therethrough.

'7;. In harness for cross weaving, a doup needle an eye through which the doup warp extends, said needle being made of thin flat metal, a pair of lifting heddles each made of a single flat strip of metal having its upper and lower portions each disposed in av plane parallel to the general longitudinal extension of the warp ends, the central part of the heddle being slotted for the extension of the doup needle therethrough and being twisted with respect to the planes of the upper and lower portions; of the heddle,

V 8. In harnessf;0r crossweaving, a doup needle having an eye through whiQh the doup warp, extends, said needle being made of thin fiat metal, a pa rof lift ng; er-idl s. each mad f. a sin l flat strip of metal, having its upper and lower portions each disposed in a plane parallel to the general lqngitudmal extension of; the warp, ends, he c t p rt. ofrthe edd e comprising an upper straight portion, an intermediate offset portion, and a lower straight portion, all disposed in planes at right; angles to the planes of the upper and lower portions of the heddle proper hereb t provide a. uard to uid the wa p over the, top. of the doup needle, and the central party of, the heddle slptted for, the extension o he do p edl th ethrou h.v

9. In harness for cross weavin a doup needle having an; eye throughwhich the, doup warp ex ends; said needle be n made. or thin flat metal, a pair of lifting heddles each made of a single flat str p o m al hayngits upper and lower portions each disposed in a plane parallel to the en ral longi dina extension of; the warp end the central part ofthe heddle comprising an up,- per straight portion, an intermediate offset portion, and a lower straight portion, all disposed in p anes; a right an es to the planes of; the upp and lower portions: ofth heddle proper thereby to provide a guard to guide the warp over the top of the doup; needle; the central, part; of; the heddle being; slotted; tor the extension oi? the doup needle therethr s and the; nnerma s sf the y portion of the needle being curved and extending to a central apex therebyto center the eye portion or the heddle with; respect to the lifting heddle wh nithe. sam is rai ed.

OH J CQ AUFMANN.

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