Патент USA US2124067код для вставки
July 19, 1938. K. HOWIE \ ~ 2,124,067 NEEDLE BAR ASSEMBLY FOR KNITTING MACHINES AND PROCESS OF- KNITTING THEREON Original Filed Dec. 14, 1955 2 Sheets-Sheet 1 ju?y 159, 193. K. HOWIE 2,124,957 NEEDLE BAR ASSEMBLY FOR KNITTING MACHINES AND PROCESS OF KNITTING THEREON Original Filed Dec. 14, 1935 2 Sheets-Sheet 2 Jfennei'h Jigugz'e, W. 2,124,067 Patented July 19, 1938 UNITED STATES PATENT OFFICE 2,124,067 NEEDLE BAR ASSEMBLY‘ FOR- KNITTING MACHINES AND PROCESS OF KNITTING THEREON Kenneth Howie, Norristown, Pa., assignor to Wildman Mfg. (30., Norristown, Pa., 2. corpo ration of Pennsylvania Application December 14, 1935, Serial No. 54,470 Renewed January 5, 1938 9 Claims. (on. 66-82) The invention relates to full fashioned knitting machines of the Cotton type. ing another part of the means for adjusting the needle bar sections. ‘ Fig. 12 is a diagram of the fabric produced with the aid of the sectional needle bar. The sectional needle bar can be used in an 5 each end of the middle section, said end sections being adjustable endwise away from the middle. ordinary Cotton frame for making full fashioned section to leave enlarged spaces in the needle row hosiery, or in the machine shown in the United between the adjacent ends of the sections so that States patent of Howie and Krieble, December ' a wale of enlarged sinker loops will be knit in 4, 1934, No. 1,982,991. The needle bar of the present invention i each heel tab substantially at or adjacent the in which the row of spring beard needles d are ner selvage thereof. ' In transferring the leg blank to a machine for mounted is shown generally at i, la, carried by knitting the foot portion onto the leg portion, the brackets 2, mounted on bearings 4 and operated wale of open stitches can be used for impaling by mechanism substantially as in ordinary prac 15 the heel tabs onto the transfer bar, and thence tice, upwardly and downwardly and also for 15 to the needles of the footer machine. Or the wardly and backwardly in performing the knit~ The invention includes a needle bar made‘of sections i. e. a middle section and a section at fabric, having the wale of enlarged loops, can~be impaled on the needles of the same machine on which they were formed, for continuing the knit 20 ting to form the foot, or the tabs with the wales of enlarged loops can be used in a process in , volving the attachment of .said tabs to the foot portion of the stocking by a looping action per formed by the operator. 25 I Fig. l is a front view of the needle bar adjusted to its closed position, and showing part of the 30 means for operating the ban. Figs. 1a and lb are details. Fig. 2 is a front view of the needle bar adjusted to its open position. Fig. 3 is a detail plan view of parts of ad 35 jacent sections of the needle bar and part of the means for adjusting the sections of the bar to open or closed position. This view shows the sec tions in their separated relation, the bar therefor being referred to as in its open condition. Fig. 4 is a detail plan view of the sectional clamping member of the needle bar. Fig. 5 is a detail plan view of the main part of the sectional needle bar. ' section I and end sections Ia, for a purpose here inafter described. 20 ' The sections of the bar are each provided with a dovetail base kc corresponding to the recess in ‘II are cross plates 1 lb secured by screws ‘I2. The 25 ratus, the process of knitting, and the fabric. 40 ' This needle bar according to the present’ im provement is formed in sections, i. e., a middle the carrier rail. At the ends of the carrier rail The invention also includes besides the appa In the accompanying drawings ting operations. ' Fig. 6 is a plan view of the supporting rail of 45 the sectional needle bar. Fig. 6a is an end view of Fig. 6. Fig. 6b is a view of an end plate for the rail of Fig. 6. Fig. 7 and Fig. 7a are end views of the main part, and the clamping part, respectively, of the needle bar. Figs. 8 and 9 are views of a bar forming part of the means for adjusting the sections of the needle bar. Figs. 10 and 11 are views of an eccentric form 55 center section of the-needle bar is ?xed to'the carrier rail by screws 13. The end sections are adapted to have movement lengthwise along the carrier} rail to and from the center section, the outward movement being limited by the adjust 30 able stop screws ‘llc. The needles are clamped between the main sections of the needle bar and the complementary clamping sections lc which are secured to the main section by the bolts Id. Each main section of the needle bar may- have 35 one of ' the clamping members associated there with, so that‘ each end section with its clamp can be ‘ manipulated independently. vThe movable end sections la of the needle bar are pressed normally endwise against the ends 40' of the fixed middle section I of the bar by springs 14 which are seated in sockets 14a of the cross plates ‘Nb and sockets.“ in the end sec tions. ‘ The closed position of the needle bar, i. e.- with 45. the end sections against the middle, is shown in I Fig. 1, so that the needles adjacent the joint be tween the sections are spaced apart a distance equal to the spacing of the needles‘ throughout the sections. This condition is for knitting courses with the spacing of stitches uniform throughout, as for instance, in the welt, leg and foot portions of the stocking. _ For separating the end sections from the ends of the ?xed middle section, as shown in Fig. 2, 55 ' 2 2,124,067 I various means may be provided. ‘The one- shown needles which are to form the heel tabs. The as an example consists of an eccentric, 16, Figs. 1, 2, 10 and 11 pivotedon a screw TI mounted in the right hand end section of the needle bar. fabric is cast off after the required ravel courses are knit thereon, and finally the heel tabs with knitting is‘continued. during which the instep This eccentric bears on the end of a rod 18 slid their ravel courses are cast o? and the fabric ably mounted on the needle bar by screws 19 pass is then ready to be ‘placed on the points of a ing through elongated openings 80 in the rod into " transfer bar and thereafter upon the needles of the end sections of the needle bar. An adjust ment for this connection consists of a screw 82 10. passing through the lug 83 and bearing on one of ' the screw studs 19. a lock nut being provided at 84. The eccentric may be variously operated auto matically or manually. As an example, a man .uaily operated means has been chosen for this 15 particular disclosure of the invention consisting of a handle 8| attached to the eccentric. By turning this handle from the position shown in Fig. 1 to that shown in Fig. 2, the rod 18 is pushed by the eccentric leftward, and this move— 20 ment is communicated to the lefthand section of theneedle bar., The right hand section la of the needle bar is also free to move and because the eccentric is mounted directly thereon the result will be that both end sections aremoved 25 endwise from the ‘middle section until stopped the footer machine by the use of said transfer bar. Other processes can be carried out involving the use of what, conveniently, may be termed an 10 instep transfer bar,.by which the instep loops are taken oif from the instep needles, and held while the heel tabs are completed and thereafter, by means of said instep transfer bar, replaced upon said instep needles for knitting the foot portion 15 of the fabric on the same machine, only the one machine being-necessary to do the whole work. This instep transfer bar forms part of the sub ject matter of another application for patent ?led of even date herewith, as does also its combina 20 tion with this needle bar. In one process, involving the use of said instep I transfer bar, the heel tabs having the wale of open work stitches may be spreadoutward or laterally and their enlarged sinker wale stitches 25 by the screws lie. The needles will 'now be impaled upon the‘ needles of the‘ same machine related as shown in Fig. 2 with the needles atthe which has formed the leg portion and then the adjacent ends of the sections of the bar spaced knitting of ‘the foot is proceeded with on the apart as shown at y a distance greater than the same machine, it being understood that the in 30 ordinary spaces between the needles. step‘transfer bar which took the instep loops off With the needle bar sections adjusted as just from the instep needles and held them, has now described, a line of sinker wale stitches will be restored said loops to the instep needles, this hav formed longer atithe gaps, or wider spaces 11 ing taken place before the knitting of the foot between the sections of- the needle row, so that has been started. 35 the heel tabs will have 'a line of enlarged spaces, It will be noted that the row of needles for 35 or openings, in those wales of the heel tabs which forming the instep fabric extends from and in are at- or adjacent the inner selvage edges of said "cluding the needle dl to and including the needle tabs, as shown at y: Fig. 12, which selvage edges d2, on the middle section of the needle bar. _At are knit on, say, the end pairs of needles of the the ends of this row of instep needles there are 40 middle section of the needle bar, one pair at each other needles on'the middle section, and'two of 40 end of saidmiddle section. these are shown as an example at each end of the The clamping screws Id for- the center section middle section. These needles, while mounted on of the needle bar, aswell as the clamping screw the middle section, belong to those needles which for the right hand section, which screws draw the knit the heel tabs. By this relation of the needles 45 clamping plate Ic into place to clamp the needles. the sectional b'ar enables therextra wide spaces 1,!2 to the bar, have their heads exposed through open to be provided in the heel tab fabric at or ad ings 18a in the rod ‘l8,which openings are larger in jacent the inner selvage edges thereof. diameter than the bolt heads, so that the rod is The full complement of needles is always main free to be adjusted despite that the said heads lie tained in alignment with the needle row, the in part in said openings. extra wide spaces between certain of the needles 50 With the invention applied to astocking knit- _ being obtainedby a relative adjustment endwise ting machine, it is possible to provide in the heel between the sections. Because none. of the nee tabs of the stocking blank during the knitting dles are moved to a position out of alignment thereof a line of enlarged openings in a wale of 55 each heel tab, said wale preferably being spaced apart from the selvage edge of the heel tab with two ordinary standing wales intervening. These large openings are due to the spaced apart rela tion of the needles at the points 1/ where the ad 60 jacent ends of‘the sections lie spaced apart. The sectional needle bar above described may - you be used in carrying out various processes of knit ting. For instance, when it is desired to provide in the knitting operation a wale of open work in each tab to facilitate impaling the leg blank onto a transfer bar for. transferring to a machine for interknitting the foot portion of the stocking with the leg portion, the knitting of the leg would be with the other needles of the row, the use of oper ating connections individual to certain of the 55 needles is avoided, which operating connections would have to be multiplied according to the number of needles which are to be operated to and from a position of alignment with the other needles of the row. ' - 60 ' The sectional bar may be used in carrying out other processes of knitting a single unit full fashioned stocking on one machine, and there fore it will be understood that the invention in volving the'sectional needle bar is not limited to any one use thereof. . - By this invention the needles are maintained in their aligned condition irrespective of whether carried on with the needle bar in closed condition . or not the extra wide spacing at 1'] exists in the 70 to provide a row of needles equally spaced throughout. This knitting would be continued to a point where the knitting of the heel tabs is about to begin, whereupon the needle bar is ad justed to its open position of Fig.‘ 2 presenting 75 the extra wide spaces at 1/ between certain of the . ' v 70 No individual needle is dropped out nor de ?ected from its prescribed position. No special means are provided for “holding the needles in alignment with each other. All sections being mounted in the rail having the dovetail channel’ 75 needle row. 3 2,124,067 will be maintained in accurate alignment under all circumstances. vThe dovetail channel in the supporting rail may be lined with any suitable wear piece. - It will be seen that the rail ‘H which serves as carrier for the sections I, la holding the needles is integral from end to end. Its middle portion i. e. that portion which corresponds in length to the middleysection' l of the needle bed has said middle section rigidly attached thereto against any relative movement between said middle sec tion and the rail. The portions of the rail lying at either end of the rail may be termed the end portions of said rail. They form integral exten 15 sions of the rail’s middle portion and they serve asguides as well as supports for the end sections Ia of the needle bed. I claim: - 1. A needle bar for full fashioned knitting ma V20 chines comprising a carrier rail made up of a middle portion and end portions integrally con nected with the middle portion and in lengthwise alignment therewith, a section rigidly secured to the rail’s middle portion against movement rela 25 tive thereto, a section mounted on each of the integrally connected end portions of the rail and slidably only endwise for adjustment to and from the middle section while in constant alignment therewith, needles carried by the sections and means for operating the end sections for adjust ing them. 2. A needle bar according to claim 1 in which the operating means for the end sections com prises a bar and an initial operating element for said bar mounted on one of the sections, and a connection operated by said element, which by one action moves both of the end sections away from the middle section. ' 3. A needle bar according to claim 1 in which 40 spring means holds the needle bar sections closed against each other, and initial operating means mounted on one of the sections, with a connec tion operated thereby for separating the sections against the pressure of the spring means. 4. A needle bar for ?at full fashioned knitting machines having a middle section and a section at each end of the middle section movable to and from the middle section, each section having its complement of needles to make up the needle row, and means for moving the end sections end wise relative to the middle section, said means comprising an initial operating element for manual manipulation mounted on one of the end sections, a connection from said element to the other end section, and stops for limiting the out ward movement of the end sections, substantially 10 as described. _ 5. A needle bar according to claim 4 in which the operating means consists of an eccentric mounted on one end section, and a connection operated by and extending from the eccentric to the other section, substantially as described. 6. The hereindescribed process of knitting with a sectional needle bar consisting in knitting the leg portion of the stocking with the sections closed, that is, with the end sections closed against the middle section to provide equal spac ing between the needles throughout the needle row, then separating the sections so that the spaces between the needles at the adjacent ends of the sections will be enlarged for making a Wale of enlarged sinker loops adjacent the inner selvage edges of the heel 'tabs, substantially as described. '7. A process according to claim 6 in which the inner selvage portions of the heel tabs are formed by needles at the ends of the middle section of the needle bar. 8. The hereindescribed process of knitting with a sectional needle bar, consisting in knitting a portion of the fabric with the sections closed, to provide equal spacing between the needles throughout the needle row, then separating the sections so that the spaces between the needles at the adjacent ends of the sections will be enlarged, and then knitting to thereby make wales of en 40 larged sinker loops, substantially as described. - 9. A method according to claim 8 in which all sections of the needle bar are held in lengthwise alignment under all conditions, substantially as described. ' ' KENNETH HOWIE.