Патент USA US2406579код для вставки
Aug. 27, i R'. BAssls'r 2,406,519 msm-communs Ílmf?umrènky Fon Immune “canins med April 2a, 1945. , - 2 Shawna-sheet- 1 2,406,579 Patented Aug. 27, 1946 UNlTEo STAT Es PATENT* omer; _' ` 2,406,579 y NEEDLE-GONTROLLING MEGHANISM Fon KNIT-TING MAoHrNEs: nadoen Bassist, New. n Application April'zs, 1945,» serial Np. seattle- 1 Briefly stated, the` preferred practice of my present invention.relatesgßnerally to; knit-1. invention involves the provision of a needle in whichk a turned-back beard of magnetically-re-A imgrovedneedle-Controllingmee ting machin sand; has particu-.lar reference anism.. t0 While Het, necessarily restricted. sponsive character is mounted on -a needle shank all. its phases to enr particular time of knitting.- meehine. mr »- ; Which is substantially immune to magnetic forces,r and the mounting of at least one electro-magnet i in a position in which the beard is subjected toits ìaventionis primarily intended for and applicable t0,.- the kind ,0f knitting; meehine which employe e needle of thel soecalled “spring beard” type. A magnetic force. By energizing and de-energizing the magnet inV predetermined timed relation to the knittingA operation, movements of the needle beard dee-.die or this kind comprises'. a shank and e. .edfbaek heard. there. being. a yieldebly» reellel ierit. articulation between the beard and ehenli whereby. the. beard ie constantly-»urged inte en Oreil rarmreeeivine position.. spaced. from the shank?. Dunne e. predetermined 'phase of. .the 1m' ne..> @veley via... whedit is.; desired te entran -15 the ram theereek. 0f. the.’ needle. and guide it lamellen. nrevìouslyedempleted 10.01? ÍOf the. knitted tehrid ase-'called “presser barf’er equiva. lent meehaniealî element. ie; eareedtd bearlupen the .heard and. prees it, inte. ednteetwit 'the' A20 sheet’. this presente beine maintained' until the beei‘d' d11d Shank are safely. through therme: viously-knitted loop. l Upon subsequent With drawal of the presser bar'or-the likeáythûebeard can be correspondingly effected. i ,Y ' So far as the broader phases ofthe presentin vention are1 concerned, it makes' no _difference whether the needle as a whole is reciprocated t as iin-.Warp knitting machines, for-example, amongî others).-, or Whether it remains. stationary during the knitting operation (as in circular- knittinglma chinos, for> example). But Whatever the nature or mode of: operation of the knitting machine may be, it will embody, of course, a mechanism adapt ed to perform» a knitting. operation uponvya'rn supplied to’it,1fa main drive shaft'actuating. this mechanism,- and a magnetically-controlled needle beard of 'tlîef character referred to, the electro tje-assumes its normal open dispositionvwith re-l V25 magnetic. mearìsfbeing operated in timed relation spoot tó the shank. _ _ ’ - " j Y’ to the 'knittingv-.operationg and preferably byv a l " The dse ef; a preSeer-ber'of the. generality@ mentioned. and the operation deeerileed. means actuated by the main drive shaft of the machine. For.~ example., I contemplate that the electro-magnet or magnets- will be controlled by an electric circuit, and that al suitable switch Wv 1.-; known in the knitting machine art.` ' ' It is a general object ofmy present inventionto 'y provide an improved mechanism wherebythe need means may. be actuated bythe main drive shaft for a presser-‘bar may be dispensed With,l This, (fori subordinate'mechanisr'n driven by the shaft) . achieves- the desir-able ¿advantage ofy simplifying the -knitting machine structure,V andr eliminating tomake and break the electric' circuit -in the de' sired. timed relation tothe knitting operation. ' `_ ' Or` course, there> will be as many electro-'mage several movable elements, via, the presser bar andV its associated actuating mechanisme.. Such ‘a simi nets as maybe needed to‘ control the needlesin plification is of particularfvaluein machines iti-'_A tended to operate at relatively highY speedssi‘née’r> every movable part ofi a‘knitting-.machine entails problems of accurate mounting and assemblyf volV-ed. Thus, ina Warp'knitting- machine, for' example, or in any ~machine' vvl'ierea- largey multi;- plicity off’ needles are simultaneously operated duringlthê knitting proceduraa plurality o_f` elec tro-magnets will be arranged side by 'side-alon'g-'a suitable' support extending; lengthwise of the. ma chine, i-ç‘ëfjgparïalijei tothe bank of needles. on the 'other hand-'in _a’circuiafî knitting vmai-,nine or Y Wearïand tear, lubrication, Weight,r vibration, and. the like; and these problems become-Q1@v7 „special andY unusual magnitude where high-speed move# y ments, lespecially. oscillatory movements'` such as those ofapresser bar, areinvolved. n' 4 < 'l f I' achieve.v the principal object of» my invention? ' the like,` wheréonly vone or at inosta small group ’ of needles is operative at any'instant’olf time, one electro-’magnet may be'_ 'su'ñìcientf 1t Will b_e understood,"'al`so, that a single electro-magnet by means-y of a design and association: of parts whereby- an electro-magnetic` means may be ’suo-r cessfull-y resorted to to. perform they functions may be operatively associated with a >group of heretofore served by a presser bar or other me-. 50 adjacent needles, and that-the invention does not chanical device of the character; described.4 -Not necessarily contemplate that there shall be a sep- ' ` only- does such an improvementv involve substan-ï tial'ly no movable parts, but it lends itself readily! needle'. arate electro-magnet in association with each which are: currently VcomingJ~ into. greater use. y v' f Y . ` In a .relativelysi'mple andpreferred `embodi to the.. higher speed -machines and ' operations 555 ment of my- inventiom the beard'. of the-needle 2,406,57 9 3 4 is resiliently articulated to the shank, as in the ordinary “spring-beard” needle, and the beard normally assumes an open position spaced from the shank. The electro-magnetic means, in such are the elements which feed the yarn to the needles. During the operation of the machine, the guide bar 25 has a primary reciprocating a case, is positioned to exert its force upon the needle beard at predetermined time intervals to rection, each of the elements 26 passing through move it into a closed position against the shank, movement in a generally forward-and-back di one of the spaces between the needles 20. The guide bar 25 also reciprocates, in accordance with the resilient articulation being relied upon to a predetermined plan, in a longitudinal direction return the beard to its openv position after the so as to effect the‘desiredl formation of'yarn loops magnetic force has ceased to act. Or, conversely, 10 around predetermined needles. The guide bar a needle may be employed in which the inherent 25> is actuated by mechanism which is driven by resilience presses the beard normally against the the main drive shaft. shank, and in such a case the electro-magnetic None of the actuating mechanism has been means may be positioned and arranged to exert illustrated in the present drawings since it is its force so as to open the crook of the needle atA 15 generally well-known per se, and since it has no predetermined times. An unusually eñ'lcient re- ' direct bearing upon the present improvement. sult can be achieved by a third alternative design However, it ,will be understood that the various in which the beard is resiliently urged into a nor parts are driven in such predetermined timed re mal position intermediate between the fully-open lationship that a series of knitting operations are and the fully-closed positions, and in which a 20 successivelyperformed. An illustrative cycle is pair of electro-magnets are arranged to exert best shown in >Figures Y1-5. In each of these their forces from opposite sides of the needle at figures, I have shownv one of the needles 20 and predetermined successive time intervals, one one of the guide bar Yelements 26; andI have magnet serving to move the beard into its fully` indicated in dot-and-dash lines the general dis-v closed position, the other magnet serving to move 25 position of the sinker elements 24. In Figure 1, it into its fully open position. . the needle 20 has its turned-back beard 21V in I achieve the foregoing general objects and an open yarn-receiving disposition with respect advantages, and such other objects and advan to the shank of the needle, and the guide bar ele tages Aas may hereinafter appear or be pointed ment 26 has just completed a movement which out, in the manner illustratively exemplified in 30 has engaged the yarn strand 28 within the crookr the accompanying drawings in which: of the needle. The needle is in a raised position. Figures 1-5 are diagrammatic views showing The needle now starts to descend for the pur successive stages in a typical knitting operation, pose -`of pulling the strand 28 through the pre and showing an illustrative installation of an ~ viously-knitted loop 29. During this descending improved mechanism of the present character; 35 movement-,as indicated in Figure 2.,.the needle _Figure 6 is a fragmentary perspective view of beard 2'! moves into its closed disposition with re’ a portion of the knitting instrumentalities in the spect to the needle shank, thus entrapping the relationship they assume in an actual machine, yarn 28 within the crook of the needle, and per an illustrative electric circuit being shown dia mitting the needle to pass completely through grammatically; 40 the loop 29; During this procedure, the sinker Figure '7 is an enlarged longitudinal cross-sec 24 moves towardV the left, as a comparison of tion through a knitting needle of the present charFiguresl and 2 will indicate.` i After the free end of the beard 21 has safely Figures 8 and 9 are views similar to Figures 1-5, illustrating a modification ofthe invention; and 45 passed through the loop 29, it is no longer neces sary that it remain in its closedeposition, and Figure 10 is a similar view illustrating a fur the continuing descent of the needle is indi ther modiñcation. i cated in Figures 3 and 4, showing how the yarn Merely by way of example, I have chosen to 28 is pulled through the loop 29 in order to form illustrate the present invention as it may be ap v plied to a so-called warp knitting machine. Some 50 a new loop 30. In Figure 4 the needle is in its lowest posi of the parts of such a machine are shown in tion, and in Figure 5 the needle has risen to its operative relationship in Figure 6. In this figure highest position. In the meantime, the sinker 24 I have shown a multiplicity of knitting needles has moved into the position shown in Figure 5, 20 extending upwardly from Aa needle bar 2|. During the operation of the machine, which is 55 to hold rthe newly-formed loop 30 down while the well-known per se, the needle bar 2| is caused to reciprocate in an up-and-down direction by an actuating mechanism driven from a main drive shaft. The shaft 22 may be considered to be a drive shaft of kthis character, or a subordi 60 nate shaft driven thereby. f y needle 20 moves upwardly. It will also be ob served that the guide bar element 26 has swung into a position in readiness for forming a new loop of the yarn 28 in the crook of the raised needle.’ . I My present` invention is directed primarily to At 23 I have indicated a sinker bar which car ries, in well-known fashion, a series of flat sinker the opening and closing movements 0f the nee dle beard 21. In the embodiment illustrated in elements 24 arranged in parallel spaced relation--> ship and extending through the spaces between the needles 20. During the operation of the knit subjects the needle -beard 21 to the electro-mag Figures 1-5, this lis accomplished by mounting an electro-magnetic means 3l in a'pcsition which netic force at the time that the needle beard 21 is to be moved into its closed position. The nee dle illustrated is of the usual character in which bar 23 is suitably actuated in the desired timed 70 there is a resilient articulation between the nee relationship by the main drive shaft, such as the dle beard 21 and the needle shank. This articu shaft 22. . \ lation is in the vturned-back region l32, which is I have also shown an illustrative guide bar 25 resiliently constructed so that the needle beard which carries a plurality of depending apertured normally assumes the position shown in Figures ting machine, the sinker bar 23 is caused tore ciprocate> in a forward-and-back direction, in timed relation to the needle reciprocation. The elements 26. In a warp knitting machine, these 475A 1, 3, 4 and 5, but may be urged into the position 2,406,579. . . 5 or' Eìgure‘..?¿ragainstathe action; ot its inherent resilienceim Y ‘ ` '. ".1 sive.I standmiint,I from the. materiali of.y theïshank ofitheaneedlœ This difference.; resides in theta-ct that. the-...needle beard 4î1 is; purposely constructed: j InFtgure- 1',..the.e electro-magneticmeans 3 t; is. inoperative. In Figure. 2;. the'd'otted lines.3l3 .are intended. to:` indicate that the electro-magnetic. meßnsisoperative and' is. producing ‘an electrica. magnetic. ñeld; which exertsjits force upon the needle beard; 21:.. "Ifl'iemagnet‘31i isrnot: showniir Figures 3:-5., and; is, inoperative during the phases of operation 'shown inethese figures.. in such a way that it is: readily' responsive~ to. electro-magnetic force, while thez material oi the needle shan-kA is purposely.V made ofÍ a material may which>beisachieved relatively .inimmune> various; Ways. to. such. , For forcer. example, 10.v the shank ,may be.` composed of.r stainless steel 'or' f A practicar embodiment: of the invention is. most clearly shown inv Figure 61 in which I have illustrativetyf shown the electromagnetic means in the form of a series of adjacent U-shaped magnets. For- the` sake of convenience, I have designated these magnets by the reference nu meral 3|. They are mounted side-by-side upon a supporting bar 34 which extends lengthwise of> the machine. It will thus be observed that each magnet controls the operation of a series of ad 20 jacent needles 20, the bank of magnets conjoint ly producing, at desired predetermined times, a 6 ' beard uns dineren-from. a magnetieaiiy-«respom equivalent allaoywhich is, relatixteiy .immune to. magnetism, while'. the breal'dlfl may be composed of.'i carbon; steel` or equivalent materialjwhich. is. relatively responsive: to- magnetism.; lìiïliereA dife ferent materials are employed", the parts mayf be` separately manufactured, and then Welded to gether at the line or in the region 49, any con venient welding procedure being utilized for this purpose. In the alternative, the shank and nee dle beard/may be formed of a single element, and the beard 41 subsequently treated (for example, by chemical action or electroplating or the like), to impart a relatively magnetically-responsive magnetic field which aiîects an entire series of quality to the beard. needles. In Figures 8 and 9 I have illustrated anv obvious ’ The magnets need not necessarily be U-shaped, 25 alternative arrangement in which the electro as will be understood, and any magnet construc magnetic means 50 is arranged on the opposite tion or design may be employed, provided it pro side of the needle 5l. In this case, the resilient duces the desired electro-magnetic field in the articulation in the region 52 is of such a charac desired region of the machine. For illustrative purposes, I have diagrammatically shown the type 30 ter that the beard 53 normally assumes the closed position shown in Figure 9, whereby the action of electric circuit which may be employed for controlling the magnets. `vA suitable energizing of the electro-magnet 50 (indicated by the lines of magnetic force 54) serves to draw the beard 53 coil is formed around each magnet. One end of away from the shank and thus open the needle the coil is connected as at 35 to the conductive portion 36 of a control wheel or switch 31. The 35 so that it may receive the yarn 55. An unusuallyv eiiicient arrangement, constitut other end of the coi] is connected, as at 38, to ing a third alternative, is 'shown in Figure 10 in one terminal 39 of a suitable source of electric 'which the needie 56 has a. beard 51 resiuenuy power. "A rheostat 40 is preferably arranged with articulated thereto at 58 in such a manner that in the lead wire 38, for such adjustments in mag netic strength as may be desired from time to 40 the beard normally assumes an intermediate posi tion indicated in full lines. In this position, the time. beard kis neither in its fully-closed nor in its The make-and-break or switch device 31 has fully-open position, and a pair of electro-magnets been illustratively shown in the form of a wheel 59 and 60 are arranged on opposite sides of the or disk mounted on the shaft 22. The conduc tive portion 36 is arranged on the periphery of 45 needle. The magnet 59 serves at predetermined time intervals to draw the beard 51 into the closed -this wheel, and is adapted to ride over an elec position represented by the dotted lines 6l; while tric contact 4| which leads from the other ter minal 42 of the source of electric power. The > the magnet 69 functions at other predetermined time intervals to draw the beard 51 into its fully~ balance of the peripheral surface of the wheelk 31 is suitably insulated. ` As a result, when the 50 open position represented by the dotted lines E2. shaft 32 rotates, the electric circuit is periodical-y ly established and broken, in predetermined timed relation to the knitting operation, as the con This arrangement is desirable, despite the provi sion of a pair of magnets, because less electric power is needed to eñect the desired movements of the needle beard. The magnets 59 and 60 are tact element 4l makes and breaks electric contact 55 energized and deenergized at predetermined times with the conductive portion 36. The various coils on some or all of the mag nets 3| may be interconnected in parallel as indicated by the connecting wires 43 and 44. For by a pair of switch arrangements such as that shown in Figure 6, one switch arrangement con trolling one of the magnets, the second switch producing certain effects, a predetermined group arrangement controlling the other magnet, but groups ofpmagnets; although all magnet-actua chine. of magnets may for example be energized and 60 both of them being operated in predetermined timed relation to the main drive shaft of the ma» de-energized independently of another group or ' It will readily be understood that my invention tion is always eiîected in a predetermined timed is by no means restricted to a Warp knitting ma-> relation to the knitting operation itself. Attention is now directed to Figure 7 in which 65 chine of the character shown, nor to the various details herein illustrated by way of example. y I have shown one of the needles on a greatly Thus, any type of make-and-break mechanism enlarged scale. In this view I have more clearly may be employed, other than that diagrammati shown the shank 45, the resilient articulation 46, and the needle beard 41, and I have shown the ' cally represented by the Wheel 31 of Figure 6. For example, av photo-electric device may serve preferred arrangementy of a slight recess 48 in to make and break the circuit at the desired time the shank, within which the free end of the intervals, or a relay may be interposed-between beard 41 disposes itself when the beard is ad the source of power andthe actual make-and justed into its closed position. The line of demarkation 49 is intended to indi- ` break mechanism. ' . cate, diagrammatically,`that the material of the 75 , In general, it Will be understood that the de 2,406,579 7 8 tails herein' described and illustrated. may obvi effect movements of the latter, and means_forÍ energizing and de-energizing said electro-mag net in timed relation to the knitting cycle. ously be modified by those skilled in the art in a number of respects, Without departing from the spirit and scope of the invention as expressed in the- appended claims. 2. In a knitting machine, a needle comprising ' Having thus described my invention and illus a shank and a turned-back beard, said beard be \ ing adapted to move toward and away from said trated its use, what I claim as new and desire to secure by Letters Patent is: being composed of a material which is vsubstan 1. In a knitting machine, aneedle comprising shank during the knitting operation, said shank tially non-responsivey to magnetic force, said a shank and a turned-back beard, said beard be 10 beard being composed of a material Which is readily responsive 'to such force, andan electro ing adapted to move toward and away from said magnet positioned to exert its force upon said rshank during> the knitting operation, said beard being composed of a material readily responsive tofmagnetic force, an electro-magnet positioned to exert its force upon said beard and thereby 15 beard and thereby effect movements of the latter. RUDOLPH BAssIsT.