Патент USA US2125894код для вставки
R. DEwAs \ NEEDLE wEAvING Loom Filéä-July 14, 193e 2,125,894 " 2 Sheets-Sheet 1 #mi l ' Aug. 9,' 1938. _' R. DEWAS ` NEEDLE >wEAvING LooM " Fired July 14,v 1956 2 sheets-sheet 2 Patented . Aug. 9, 1938 i' 2,125,894 ` UNITED STAT Es A PATENTÍ ori-‘ICE ` 2,125,894 NEEDLE WEAVING LOOM °. Raymond Dewas, Amiens, France » Appuœuon July 14, 193s, serial No. 90.512 „ In France August 10, 1935 (ci. 13s-12s) 9 Claims. v The arrangement of these guiding means as a - The present invention relates to improvements whole on the needles oiïers the advantage of pre venting the coming into contact of the walls of in needle weaving looms fed from iixed weft bob bìns and has for one ofits objects to provide im , proved means for the guiding of the needles of' operation to be effected lat great speed, lubrica tion being dispensed with and the warp threads being preserved as much as possible. These improvements are described hereafter 10 and shown diagrammati'cally in the attached drawings, merely as examples of the carrying out in combination with one another, thus forming an improved guiding device, or which may be em V10' ployed separately. - , These improvements consist in means of guid ing the larms of the needles in their alternate pas sage in the shed and in means for the guiding of these arms'as well as the heels of the needles, in the channels. ’ y ` _ ` The association of these improvements enables . needles, said meansbeing adapted to be employed 15 the needles, properly speaking, with other' sur- faces liable to damage them... 5 these looms, whatever may be the type and what ever may be the method of driving the' said . of the invention which are by no means limiting. » Fig. 14 is a plan view from above of one arm of the needle with its heel, arranged with a view 15 These improvements are applicable particularly to their _guiding in accordance with 'the inven in those looms in which the needles for conveying tion, the head of the needle -not _being shown,> and for pulling the weit thread in the shed _are because this head, which isattached to the _end of the type described and claimed in the specifica-~ of the arm, may be oi any known type; Fig. 2 is -a side elevation seen from the tell oi 20 20 tions accompanying my prior U’. S. patent appli cations Ser. No, 'i25„885,`iiled May 16, 1934 (n_ow ' Pate'ntNo.- 2,072,161) and Ser. No. 19,576, ñled May 3, 1935. With regard to the improvements made in the 25 guiding of _the arms of the needles in the shed. thecloth; ~ 'v - Fig. 3 is a cross section of the arm, taken on the line 3-3 of Fig. 2; Fig. 4' is a cross section of the heel-'on the line 4-4ofFig.2; .- , 25 , Fig. 5 is a side elevation, seen from the fell of they consistinthe guiding of the' arms in four ` principal opposed directions two‘by two,.utilizing ' the cloth, showing the arm at the end of its for for this purpose means situated on the lower part ward stroke in the shed, at the >moment when , of the arm oi needles, facing the fell oi the cloth the thread is exchanged over; this figure also 30 (that is to say"of the last weit thread inserted) showing the channel in which the heel is located 30 and cooperating Vwith other means situated on the and which is fitted on one end of the slay, thel forward part oi the slay, also facing the iell of sword and the reed being shown rin part. Fig.- 6~ is a cross section, on the line 6_6 of the cloth,- which enables the shuttle race to be dispensed with, as well as' with they use ofthe _ Fig. 5 'showing the manner in .which the guiding- 35 reed as a means of guiding, thus avoiding 4the of the arm .of the needles in the shed is carried 35 inconveniences lwhich in most cases arise from . out; Figs. ’1 and 8 are. fragmentary views oi details . their employment. _ . , . With regard-to the improvements provided in of one of the guides, shown in Fig. 6 attached the guiding .of the arms oi theneedles in their to the 4fore partof the slay, facing the fell of the 40 channels, these consist in employing certain of v cloth; ' 40 . Fig. 9 is a cross section taken on the line 9-9 the means 'provided for the guiding of the arms in the shed, in combination with other similar additional guiding means which are situated on oi Fig. 5 showing the position of the arm of thel needlel and its guiding in the channeh' Fig. .10 is a crosssection taken »on the line the upper'part> oi the said arms, facing the reed, 45 these ’ various means cooperating with the inner Ill-_l0 of Fig. 5 showing the position and the 45 - guiding or the heel inl the channel; walls of the'channels arranged' accordingly. Figs. 11 and 12 are'ìcross sections of the heel, - Finally, with regard to the improvements pro y vided iorv-th'e'guiding'oi the heels oi the needles showing two variants in the construction of the in their channels, these consist in employing guid Fig. 13 is a cross section of the heel and of its 50 ing means which are similar to those employed for the guiding of the arms in the channels but which channel,` showing a variant in the construction latter; have much larger surfaces, >so that they may ex tend over at least two opposite sides of the heel, of these'latter; ' u . Y i ' The needle, the arm and the heel of which are , thés means cooperating with the inner walls of ' shown in Figs. r1,-.2 and 5, vwhich in a needle loom 55 th channels arranged accordingly. is at the left side of the loom,`has in practice on 2 2,125,894 _its end, the head (not shown) which passes the or other material, the upper ends 'of which are weft thread through the shed.v aligned on the passage, in the shed, of the strip 3 of the arms I of the needles, and at the greatest possible distance from the reed blades. 'I'his lat ter characteristic affords the very great advantage The needle- situated at the right side of the « loom and which also has at its end. a head which passes the weft thread through the shed, is formed similarly; therefore it has not been shown. Nev ertheless, in accordance with the ~type of the head, the sections of the meansfor the guiding of the heel and of the.` ann, may vary from those of _ 10 the other needle; ' According -to these ñgures and with regard to the more important f_orm of construction (Figs. 1 to 10), I- is the arm of a tubular needle, prefer ably nmade of light metal, and having a square 15 cross' section.A 'I‘his metallic construction oifers the advantage, as compared with wood, of avoid ing -all deformation under the influence of heat and dampness. ' T‘he end I’ of this arm, which enters into the .20 shed, is arranged in any suitable way to receive the head or to form the head, partially or en 25 - The opposite end _I" of this arm, which slides in the channel, carries the heel and also its stud 2 directing the alternate rectilinear movement of the needles, when this 'is attained, for example, by picking arm and connecting rod. 30 With regard to the guiding of the arm I in the shed, (Figs. 5 and 6) this is carried out, in ac cordance with the spirit of the invention, by a longitudinal strip 3 suitably profiled, attached to the lower part o_f the face I° of the arm I facing 35 the fell of the cloth and extending preferably over,l the entire length of the said arm. ,This strip is assisted in its function by the guiding elements or guides I3 which are attached to the edge of the slay facing the fell of the cloth. These guides I3, which enter into-the interior of the shed, across the lower sheet of the warp threads when the slay returns, are constructed in such a way as to en sure, without the assistance of other -parts, than the strip 3, the guiding ofthe arm in the shed, in 45 four principal directions which will be referred to hereafter, without the arm coming into contact either with the slay or with the reed. Preferably this strip 3 has an angular cross section, m‘ainly in order to reduce to‘a minimum 50 the height of- the guides I3 so that-_and for other reasons-_they may Dass under the fabric easily when the weft is beaten up. The strip 3 is fitted in such a manner that its lower face 3d projects slightly below the lower face I4 of the arm I., for 55 the purpose of ensuring the guiding of the armv in the shed, 'as in the channel, in a vertical direction ` from below to above. ` The side face 3¢ of its hori zontal web is intended to ensure the guiding" of the arm in the shed, as in the channel, in a horizon tal direction from left to right., The upper face 3h ofthis said horizontal web is intended for the _ guiding of the arm in the shed, in a vertical direc tion from above, to below and the side face 3'» is intended to guide the arm in the shed in a hori zontal direction from right to left. 'I'he guides I 3 'are arranged, at determined in tervals and -in suitable number, along the length of the slay 5, between. the channels '8 and at ' tached, by bolts or otherwise, on the edge ofthe these threads are drawn in. ' ' lIn order to ensure, on four sid‘es and in accord ance with the four- principal directions, the guid ing of the arms i in the shed by means of the guides I‘3 in combination with the strip 3, the upper ends ofthe guides I3 are cut out on the front part facing the arms I into the form of` a hook, the inner profile of which corresponds par tially to the profile of the strip 3 and consequently has faces I3?, I3", I 3d and I3", so that ‘the strip-3, when the needle advances into the shed, pene trates successively and slides in the hooks of the 20 said guidesi I3, being guided by the corresponding tirely. This head may be of any type whatever and particularly of the type described in m earlier applications already referred to. of preserving to a considerable degree the warp threads which come 'in contact with the said guides, a's well as the reed blades between which faces 3b, 3°, 3d and 3‘ on four sides, namely in ver ,tical opposite directions from above to below and from below to above, and laterally in the direc tions opposite the side of the fell of the cloth and of the side of the reed. 'I‘he hooks might be ar ranged or combined with ‘one another to coni pensate for eventual wear, as will be understoodv easily. To facilitate the entry- of the end y of the strip 3 30 into the hook of the guides I3, the angles of the sloping parts of the latter preferably are rounded, as also is the entry end of the strip. From the foregoing explanations it will be understood’readily that as the result of this guid ing of the arms l in the shed by means -of the strip 3 and the guides I3, the heads of the needles move throughout th‘eir strokes and meet, in an absolutely accurate and certain manner, without strain of the assembly. For this> reason, ’it is i possible to drive the needles at a high speed and l’ with great frequency.' with a view to the guiding of the arm l in the ' channel 3, an additional strip 3’ is mounted on and attached along the upper -part of the face I l of the arm I, facing the reed I I; it is mounted in such a way that its upper face 3b’ projects slightly above the upper face Ib of the arm I,'so as to eifect guiding in the channel in avertical direction from above to below, lateral guiding in a direction from right to left being- ensured by the face I" of this strip 3’. The guiding in the opposite lateral di rection from left to rightî and guiding in a .verti cal direction from below'to above are ensured by the faces 3° and 3‘l of the strip 3 for the guiding in the shed, this _strip 3 being diagonally opposite to the strip 3', so that by these very‘simple means the guiding is ensured rigorously. - The strips 3 and 3'_v do not extend- over the' whole height of the arm chiefly for to obtain very great lightness and at- the same time among other `reasons, to allow, in the case of the ap plication to needles working in accordance .with the arrangements described in myearlier appli cations already referred to, of the sectionalizing of the face I° of the tube of the pulling needle with a view to the passage of the blade ensuring the release of the weft thread. With a view to the guiding of the heel of the 65 70 _slay facing the fell` of the cloth, parallel to the needle in the channel 8, the end I " of the needle 70 teeth or dents II of the reed, the lower baulk I2 is provided, in this form of construction, on two of which is held in the angle formed by the upper ~ of its opposite faces Illand Iß, with strips 4, web and the horizontal web of the T-iron 5 form covering the said faces and extending beyond ing the slay Without` a shuttle`race. them above and below the faces Ib and Id, to 75 'I'hese guides I3 are constituted of lugs, of metal the same extent as the faces 3b" and 3d-of the 75 3 2,125,394 strips 3' and 3, the thickness of each Aolf these ` strips 4 being the same as that of the strip 3 or 3' corresponding to it. 'I'he strips 4, as a-result of the conception of be dispensed with and also the serious inconveni- . ' ences resulting therefrom. ' Further, as the result of this same guiding of the heel and of the arm through the whole the assembly, are much reduced in length which _ length of the channel, it will be appreciated that contributes to the lightening of the needle and the, needle, when in the'channel, can stand up, the reduction ofthe total space occupied by the loom. . > The strips 3, 3'. and 4 can be. made of any l10 other suitable material, for instance ‘ of vul canized libre. ‘ ' - With regard to the channel arranged at each end of the slay 5,-it consists of a box 8 of cast iron or other material, the side of which facing the f_ell of the cloth has a slot 9 throughout the whole of its length for the passage of the driving stud 2, said slot allowing of the needle` I being withdrawn from the rear when this is required. The mounting of the channel V8, `at least when feeding is effected with a single weft thread, is carried out in such a way that the end which is directed towards the shed reaches (when a without» strain, to the various reactions due, among others, to the beating up of the weft. . The strips 4 on the heel may cover all the faces of the end I" of the arm I entirelyor partially. 10' Fig. 11 shows a method of covering the faces I“ and I° of vthe heel totally and the faces Ib and Id of the heel partially.- . Fig. 12 shows a method of covering the faces I“, Ib, I c and Id ofthe heel totally by a sheath 4. Fig. 13 ‘shows a method of covering the faces I“, Ib, Ic and Id ofthe end I" of the needlel forming the heel totally by means of the four strips 4, the `inner> profile of the channel 8v conforming' closely to the outer profile of the strips. When a tube with sharp angles is employed, the »pro jecting angles of this channel are removed and` fabric is --.woven according the maximum width rounded olf, as shown‘at 8e, so as not to come for which the loom is designed) the immediate ’ into contact with the said angles of the tube. neighborhood of the temples, in order to be able. The four strips 4 afford the advantage of a. very to reduce to the minimum the total lengthof the needle and consequently its weight and 'at the . same time the whole space occupied by the loom. This involves, at the conclusion of the stroke be .30 yond the shed, the re-entry of the head for a cer tain distance into the interior of the channel; and when the conveying needles are arranged to work large contact surface with the channel, as an result of which wear is still further reduced. As the parts of the channel 8 which conieinto con-f tact with the strips of the arm have .not been altered, the working of the whole remains the 30" same. - In certain cases' the-reed may share in .the t. according to the process described in my earlier . guiding of the arm in the shed. For this purpose applications already referred to, this involves,'for ~the profile of the hooks of» the guides I3 is 35 the purpose of feeding the conveying needle, the . altered in such a way as».to guide the strip on 35 arrangement in the side 'ofthe channel 8 which faces the reed, at its end which is directed towards the shed, of a slot 8 extending for a certain 40 length and intended for the passage‘of the weft thread coming from the bobbin. . The attachment of the channel 8 on the T-iron 5 which vforms the slay is ensured by means of screws passing through the middle horizontal web, of the said T-iron 5 and entering the bosses I0 45 forming projections on the lower face of the the faces 3b, 3e and 3‘l only, that is to say in vertical directions from above to below, lateral from left to right and'vertical from below _to above, whilst lateral _guiding from right to left is ensured by the sliding of the face 3?’ of the 40. strip 3' against the reed, the latter, for this pur pose,~ being situated in the prolongation of the v inner vertical face »8*EL of the channel. In other cases a shuttle race may be employed for guiding the arm inthe shed, from below -to ` above, making use of the reed for guiding from > ‘ The interior of the channel 8 is hollowed out iight to left, or again the part ofthe hooks act- _ in accordance with a rectangular section, for ex-’ ing> upon the ,face 3“ of the strip 3 may be em ample, corresponding to the extreme outer di ployed. The shuttle 'race >is then notched at 50 mensions of the arm and the heel with their the location of the guides- I3 to allow of theirbeè 50 channel 8. strips. Y _ _ , is to be understood. that,_ _ without A _ , ` departing. By the combination ofthe inner faces of the in'gItmounted. channel 8“, 8b, 8° and 8‘l with the faces 4", 4h and `»from the spirit ofthe invention, alterations, im . 4d of the strip 4 of the heel on the side of the provements _or vadditions may be introduced and 55 reed; and the faces 4b, 4° and 4d ofthe strip 4 of the employment of equivalent- means may also `the heel on the side of the feu'of the cloth, the _ For example, the section of the strips is not guiding of the heel in the channel is thus. car invariable. and these may have other shapes orried out in four principal directions. By the combination of the same'inner faces of another'number of faces„the hooks of -the guides ' '60 the channel 8 with the faces 3e' and 3b' of the as `well as the channels having corresponding 60 supplementary strip -3' and with the faces 39 and 'profiles so as to ensure guiding on another num 3d of thestripl 3, the guiding of the arm I in the ber of faces or in another number of directions. channel 8 is carried out in the same way also on In _the same way the _strips of the heel and of the arm need n_ot go beyond the levels ~ofthe tube, four sides. be considered. ' ' ' ' As a result of the lguiding in the four principal _ for example if the channel 8 is given the section opposed directions which'4 ls ensured, as shown Y labove, of the arm of the needle when it is in the _shed and in the channel; as a result also of the shape and of the arrangement of the‘heel and of the dimensions of the surfaces in contact with the saidchannel, the whole in collaboration with great lightness of the needle, the guiding of the moulded materiaL'for example. Also when they » heel in the channel so that it may slide easily piece and‘the arm may share inthe sliding‘4 of the faces of‘ the (channel, thus increasing the T70 75 may be ensured; which, whilst increasing the speed, enables the lubrication of the channel to 65 shown in Fig. 13. Similarly the 'strips on the arni and on the heel may be made in a single piece, of fibre or ofA are made of moulded material, for example with 70 a basis of syntheticresin, the arm itselfland its strips and also the head, may be made in a single ' already considerable contact'surface. The sur 4 2,125,894 faces which come into contact with the guides may also be covered with vulcanized fibre or with _ other resistant material. Further the slot 9 and the stud 2 may be on portion, a guide channel connected to said slay at one end thereof and positioned adjacent the `side of the shed where said shed penetrating portion enters, means carried by said heel por another face of the channel, for example, if the .'tion for engaging said guide channel to guide drive of the needle were carried out by setting said heel portion to prevent lateral and vertical the stud 2 directly into motion, by means of a movement, an L-shaped longitudinal rib car long stroke grooved cam arranged near the chan ried by said shed penetrating portion and ex tending along the side facing the fell of the cloth nel. ‘ Finally these improvements will also be appli to be woven and Yprotruding slightly below‘the 10 cable to looms in which there are several pairs lower surface of said penetrating portion, a plu of needles bound by their heels. I claim: 1. A weft inserting mechanism for looms, com prising the combination with a slay and a shed forming mechanism, of a needle element includ ing a shed penetrating- portion and a heel por tion, a guide channel connected to said. slay at one side thereof and positioned adjacent the side of the shed where said shed penetrating portion enters, means carried b`y said yheel portion for engaging said guide channel to guide said heel portion to prevent lateral and vertical movement, a longitudinal rib carried by said shed penetrat ing portion and facing the fell of the cloth and a plurality of spaced guide members mounted at intervals on said slay engaging said rib during the penetrating movement, said rib and said guide members being so .constructed that said shed 30 penetratins portion will be guided to prevent lat eral and vertical movement, and means for mov lng the needlethrough the‘shed. 2.~ A weftinserting mechanism for looms, com prising the combination with a slay and a shed 35 iormingmechanism, of a needle element includ rality of spaced guide‘members _mounted on said slay at intervals, said guide members including means engaging said _L-shaped rib during the penetrating movement to guide said shed pene trating’portion to prevent lateral and vertical movement and permit penetration thereof into the shed, means for moving the needlel through the shed. . 5. A weft-inserting mechanism v for looms, 20 comprising the combination with a slay and a shed-forming mechanism, of a needle element »having a substantially rectangular cross-section and including 'a shed penetrating portion and a heel portion, a guide channel connected to said slay at one end thereof a?’d positioned adjacent the side of the shed where said shed penetrating portion enters, means carried by said heel- por tion for engaging said guide channel to guide said heel portion tov-prevent lateral and vertical movement, an L-shaped‘longitudinal rib carried by said shed penetrating portion and extending along the~ side facing the fell of the cloth to be wovenand protruding slightly below the lower surface of said penetrating portion, a plurality ing a shed`penetrating portiona'nd a heel portion,« of spaced guide members mounted on said slay i a guide channel _connected to said slayat one side at intervals, said_~ guide members including thereof and positioned adjacent the side `of the means engaging said l.-sha'ped rib during the shed where said shed penetrating portion enters, penetrating movement V`to guide said shed pene 40 means carried by said -heel portion for engaging trating portion to prevent lateral and vertical said guide channel to de said heel portion to movementand permit penetration thereof into prevent lateral and vertical movement, a longi the shed, a second >longitudinal rib carriedvby . tudinal L-shaped rib carried by said penetrating - said shed penetrating portion and mounted sub portion,~ a plurality oivspaced guide members stantiallydiagonally opposite to said ñrst men tioned rib and protruding slightly above the up members including means engaging said L-_-` per surface of said shed penetrating portion, said shaped rib duringthe penetrating, movement to ribs being constructed to engage said guide chan guide said shed penetrating-portion to prevent nel when the shed penetrating portion is in lateral and vertical movemen'tand permit pene- _ serted into and withdrawn from the shed where by said shed penetrating portion will be con 50 tration `thereof into the shed and means for mov ing the needle through the shed. ’ tinually and evenly guided to preventllateral-' 3. A weft inserting mechanism for looms, -com and vertical movement whileit is in the guide prising the -combination with a slay and a shed channel, and means for moving ' the needle forming mechanism, of a needle element includ through the shed. _ _ mounted on said ‘slay at intervals, said guide 55' ing a shed-penetrating portion and a heel portion a guide channel connected to said slay at one side thereof' and positioned. adjacent the .side of the shed where s__aidshcd penetrating portion enters, heel portion for engaging -00 said giudeïwchannelÁ-Áto guldesaid heel portion to prevent lateral and' vertical movement, a longi tudinal L-sliapedl rib carried by said penetrating portion, a plurality of spaced guide members mounted on said slay at intervals, said guide members including a pair of fingers engaging said rib during the penetratingmovement to guide said shed penetrating portion.. to prevent lateral and vertical movement ‘and permitV penetration havingvaI substantially rectangular cross section and including a shed -pf'anetrating portion and a heel portion, a guide channel connected to said 60 slay at one end thereof and positioned adjacent the side of _the shed where said shed penetrat ing portion enters, means- carried by said heel portion for engaging said guide channel to guide said heel portion to prevent lateral and vertical 65 movement, an L-shaped longitudinal rib carried by said shed penetrating portion and extending prising the combination witha slay and a shed alongthe side facing the fell of the cloth to be woven and protruding slightly below the lower surface of said penetratingportion, a plurality of spaced guide members mounted on said slay at intervals, said guide members including means forming mechanism, of a needle element hav engaging said L-shaped rib during the penetrat into the' shed, and means for moving the 4needle 70 through theshed.` 4. A weftinserting mechanism for looms, com -75 6. A weft inserting mechanism 'for looms, comprising the combination with a slay and a shed-forming mechanism, oi' a needle element ing a substantially rectangular cross section and ing movement to guide said shed penetrating including a- shed penetrating portion and a heel _ portion to prevent lateral and vertical -move 5 2,125,894 ment and permit penetration thereof into the shed, a second longitudinal rib carried by said and. protruding slightly above and below the up per and lower surfaces of said heel portion, a shed penetrating portion and mounted substan- ' longitudinal L'-shaped rib carried by said shed penetrating portion and extending along the side facing the fell of the> cloth to be woven and protruding slightly below the lowerl surface, a plurality of spaced guide members mounted at intervals on said slay, said guide members in tlally diagonally opposite to said ñrst mentioned rib and protruding slightly above the_upper sur tace of said shed penetrating portion, said ribs being constructed‘to engagel said guide channel when the shed penetrating portion is inserted into and withdrawn from the shed whereby said 10 shed penetrating portion will be continually and evenly guided to prevent lateral and vertical movement while it is in the guide channel, means for moving the needle through the shed and slots in said guide channel one of said slots‘accom 15 modating said last mentioned means, the other one of saidslots permitting the passage of the weft thread arriving from the bobbin and pass ing to the selvedge. , ’7. A weft inserting mechanism for looms, 20 comprising the combination with a slay and a shed-forming mechanism, ‘of a needle element having a substantially rectangular cross section and including a shed penetrating portion and a `heel portion, a- guide channel connected t0 said 25 slay at one end thereof and positioned adjacent the side of the shed Where said shed penetrating portion enters, means carried by said heel por- _ tion for engaging said guide channel to guide s_aid heel portion to prevent lateral and vertical 30 movement, said means including guide strips mounted on opposite' sides of_ said heel portion cluding means engaging said L-shaped rib dur ing the penetrating movement to prevent lateral 10 and vertical movement, a second longitudinal rib carried by said shed penetrating portion and mounted substantially diagonally opposite to said ñrst mentioned rib and protruding slightly above the upper surface of said shed penetrat 15 ing portion, said ribs being constructed to engage said guide channel when the shed penetrating portion is inserted into and withdrawn from the shed, ,whereby said shed penetrating portion will be continually and Aevenly guided to pre 20 vent lateral and vertical movement while it is in the guide channel and> means for moving the needle element through the shed. ` 8. A weft inserting mechanism according to , claim 7 in which said guide strips entirely sur 25 round said heel portion. ' ~ ’ 9. A weft inserting mechanism according to claim 7 in which said guide strips only partly surround said heel portion. RAYMOND DEWAs.