Jan. 7,1947. F. J. FORD ‘ 2,413,819 KNITTING MACHINE‘ Filed May 25, 1943 4 Sheets-Sheet 1‘ _ “w. . R ‘, v . . ., 8 wNN w?.NR ,QNN_NQ\m w ‘= 5:-‘ @ I... / .\ AvAv.~ N“NWWM“N. . REE/“M. _a>.»QQ .\ rummmmmmnuu Wm.mm mm“R.wm Qwk._“5. ww/ m», Mm“. m“ N%, n. m& Q3 ' Jan. 7, 1947.‘ F,_,_,.-C',RD ' ' 2,413,819 KNITTING MACHINE Filled May 25, 1945 Q 4 Sheets-Sheet 2 Jan. 7, 1947. F‘. J. FORD 2,413,819 KNITTING MACHINE Filed May 25, 19,45 4- Sheets-Sheet 5 k. p AL | w \ Mm m ;w“ v. v QHQ.|; “0R 4‘ .w if , §§ 5. v ‘r Jan.- 7, 1947. - 2,413,819 F. J. FORD KNITTING MACHINE v Filed May 25, 1943 4 Sheets-Sheet 4 - BY INVENTOR. . Patented Jan. 7, 1947 - ‘2,413,819 UNITED STATES PATENT OFFICE 2,413,819 KNITTING MACHINE Frank J. Ford, Worcester, Mass, assignor of one third to Harry Whittaker, Oxford, and one third to Max B. Striar, Worcester, Mass. Application May 25, 1943, Serial No. 488,371 3 Claims. (C1. 66-—135) 1 2 This invention relates to improvements in knit ting machines and methods of knitting, Objects of the invention include the provision equally applicable to other types of knitters, and I do not wish to be limited to the constructions shown except as recited in the appended claims. of a, knitting machine having a single row of The knitting machine here illustrated is sup needles to which weft threads are fed at inter 5 ported on legs E0 or other base means, these legs vals, one weft thread being introduced to the supporting a frame or the like l2 and bracket 14. needles in series between each rise thereof, in The latter journals a shaft !6 having fast and combination with a series of jacks guiding warp loose pulleys i8, 20, driven by a belt or the like threads to be knit into a fabric with the weft 2| and shaft 16 extends under the edge of frame threads, said fabric thereby including weft and 10 [2 and is also journaled therein or in a supporting warp threads knit in loops, wherein said jacks leg as at 22. Shaft I6 is provided with a bevel are provided with means to reciprocate the same gear 2d intermediate its length and another bevel in a direction transverse to the needles and the needle motion, to shift the warp threads from one gear 23 at its inner end, for the purpose of driv ing various cam rings, as will be explained. needle to the next adjacent needle and then to 15 A bracket 28 is mounted on frame l2, adjacent shift the jacks back to the original needle, where but above shaft l6, by means of a leg 353. This by double onset or right and left loops are formed leg provides a journal for a vertical shaft 32 which in each Wale together with the chain loops of the is also journaled in a sleeve 34 forming a part of wefts. the bracket. Shaft 32 has a gear 36 fixed thereto Further objects of the invention include the 20 in mesh with the intermediate gear 24 on shaft provision of novel power transmissions for a pair 16, and at its other end shaft 32 mounts a gear of jack cam rings and for the needle cam ring; 38 in mesh with a gear 4!! on a stud shaft 42, the the provision of novel warp guiding jacks; the latter being mounted in bracket 28 and a vertical provision of a novel slide mechanism for recipro arm 44 thereof. A spur gear 46 is fast to the stud cating the jacks; and the provision of a new and .. shaft 42 and is rotated therewith from belt 28 as useful method of knitting. ‘ Other objects and advantages of the invention will appear hereinafter. Reference is to be had to the accompanying drawings in which Fig. l is a view in elevation of a cylinder knit ting machine embodying my invention; above described. . Bobbins 48 are mounted on spindles on a large bobbin ring 50, these bobbins providing the Weft. or cross threads in the fabric to be manufac tured. The bobbin ring is toothed on its under side to mesh with the spur gear 46 and is thus rotated, carrying with it the bobbins, each of Fig. 2 is an enlarged detail view of the support and drive for the weft bobbin ring; Fig. 3 is a sectional detail view of the drive : which unwinds as suitable guides not shown, lead the threads to the needles. The bobbin ring is arranged to ride on a supporting roller f or the needle cam ring; 52 mounted at the top of the bracket. Fig. 4 is an elevational detail view'of the drive Diametrically across the bobbin ring from the for the jack cam rings; mechanism just described, the construction is Fig. 5 is a section on line 5-—5 of Fig. 4; repeated in reverse, see Fig. 1. Roller 54 sup Fig. 6 is a section showing the needle cam ring; #10 ports the bobbin ring which drives spur gear 56 Fig. 7 is a still further enlarged view of the mounted on bracket 51. In turn, spur gear 55 jack reciprocating mechanism; drives gears 58, (ill, shaft 62, gear Bil, and a shaft Fig. 8 is a sectional view of the jack and slide 66 is thereby driven from shaft it, which is here support; aligned therewith. A hand wheel 88 is provided Fig. 9 is a top plan view of the slide support, ~' on shaft 65 but obviously this shaft can be power looking in the direction of arrow 9 in Fig. 7; driven also if desired. By this means the bobbin Fig. 10 is a section on line l0—l0 of Fig. 8; ring is balanced and rotates easily, any desired Fig. 11 is a section on line I l-I I of Fig. 7; means, such as a center shaft being used to Fig. 12 is a plan view of a jack; and maintain the ring in central position. Whether Figs. 13 to 17, inclusive, are diagrammatic views shaft 6%‘ is driven directly or by the bobbin ring, illustrating the action of the warp jacks with re-' it is provided with a gear 70 similar to gear 26 lation to the needles. . on shaft I5. - ~ The present invention is illustrated in the draw ‘.Fig. 3 shows the purpose of gears 26 and it, ings as applied to a cylindrical knitting ‘machine, although only the latter is disclosed in relation but it is to be understood that the invention is 55 to-the needle cam ring 12. The cam ring isv ' 2,413,819 to depress the jack guides, while lowercams 125 toothed to mesh with gears 26 and 10 and is are shaped to raise the guides. The lower guides driven thereby in timed relation to the bobbin are mounted on a lower cam ring lZ'B and alter ring. A cam is shown at ‘M, the cam slot at 16, nate with the upper cams in a vertical direction, and the needles ‘l8 are reciprocably mounted in see Figs. 1 and '7. The lower cams may be pro needle slots in the cylinder Bil as usual, and rise vided with rearward extensions I30 to prevent and fall in accordance with the speed of rotation dropping of the guides. of shafts l6 and 66. Both upper and lower guide cam rings are Brackets 82 are supported on frame i2 and in toothed on their outer peripheries, as shown, to turn mount a large ?xed cylinder 84 the axis of which coincides with the axis of rotation of the 10 mesh with spur gears I32, 135 respectively, both of which are fast to a single shaft I35 journaled bobbin ring and needle cam ring. This ?xed cyl in bracket arms l38 on support MB. Another inder is vertically slotted at close intervals on its ring M2, also toothed, is mounted on a series of interior, as at 86, see Figs. '7, 8 and 9. Further brackets M4, bolted to the needle cam ring 12 brackets 93 conveniently placed on frame l2 sup port an interior ?xed cylinder 90 exteriorly slotted 15 to rotate therewith, so that the ring M2 is posi tively driven. A third gear M6 on shaft I36 as at 92 correspondingly to slots 35. Cylinders meshes with the teeth on ring M2 to drive jack 84 and 9!] are concentric and radially spaced, so guide cam rings l 2Q, I28 at the same speed. Gears that each slot 86 faces a slot 92. Inner cylinder E32 and I 34 are ?anged to aid in supporting the 90 is divided at 94 for a purpose to be described. guide cam rings. Brackets 88 rotatively support the lower jack Gears 2B and ‘H1 rotate the needle cam ring, ring guide cam ring to be described. on, shaft 35, and the upper and lower cam Warp threads $5 are guided to the needles by rings E28, M3, thus vertically reciprocating the jacks $38, the threads unwinding from ?xed bob guides Hi2 and thereby laterally reciprocating the bins not shown but coming into the machine through eyes in. a guide ring me in a manner 25 jacks se. The needle action is conventional and it is similar to that disclosed in my Patent No. 2,289, thought that the needle cams need not be further 492, issued July 14, 1942, reference being had to illustrated. These cams reciprocate the needles guide ring element 86 therein. Jacks 98 are in the usual manner, and the needles are raised novel per se, but the principal novelty resides and lowered one cycle for each shift of the jacks. in the motion imparted thereto by sliding jack Thus, the needles being fed, the jacks operatively guides I02. Jack cams or guides Hi2 are all similar and each comprises a central flat body 5% which is inclined with relation to end pieces I525, the latter being parallel but offset due to the in- ; clined central body I04. In the end pieces ad jacent the junctions with the body Hill there are provided pairs of tabs Hi8, Ht, which extend outwardly forming guiding means ?tting slots 83 and 52, it being observed that the upper tabs “33 are located in slots two removed from the slots containing lower tabs H0, see Figs. '7 and 9. Each jack 98 comprises spaced side plates hav ing spacers I 52 securing the plate together in the correct relation. The jacks are assembled one associated therewith are shifted, say to the left, to bring the warp threads to certain needles, whereupon the needles continue their feeding movement to form the conventional loops in the, wefts and the warp loops. On the next needle feed, the jacks are shifted again to original posi tion and the needles again operate, repeating the weft loops, but this time the warp loops are formed on needles to the right of the needles forming the just prior warp loops, as respects each warp thread. This action is repeated to form the fabric with the double oifset right and left warp loops in combination with the usual weft loops. The shift of the jacks depends on the angle of inclination of the jack guide bodies above described, and the degree of shift deter mines the needles engaging the ways threads, so to each jack guide, the latter being contained be tween two spacers, see Fig. 10, and the jack itself is located between the pairs of tabs I98, ill]. that by a variation in inclination of the jack cam The shanks of the jacks extend inwardly ra guides, a single warp thread may be alternated dially of the cylinders projecting through the between adjacent needles, or between needles inner cylinder at the space 94, and terminating having a space therebetween, or between needles in the downturned ?ngers H4 containing guide spaced by one or more needles. In brief, each eyes I it to guide the warp 95 to the needles. warp jack passes its thread from one to another It will be apparent from the above that the jacks 93 move laterally and the jack cam guides 55 needle and back again and repeat, and therefore a fabric having conventional loops, and interen Hi2 move vertically. The lack guides, being re gaged double offset warp loops is provided. Figs. ciprocated vertically in the slots in the ?xed 13 to 17 inclusive show the action of the warp cylinders 84, 98, will reciprocate the jacks later jacks with relation to the needles. Fig. 13 illus ally due to the inclined central bodies IEM which thereby act as cams for this purpose, and there 60 trates a complete cycle and the needles are shown in a rising and falling movement as occasioned by the needle cams. Section A of 13 corre sponds to Fig. 14 wherein the jacks are station ary and as to the left hand needle in Fig. 14 the jacent courses and partially forming two wales 65 latch closes On the warp thread and the weft is cast off. The right hand needle casts on both with each warp. the weft and the warp. Section B of Fig. 13 cor To vertically reciprocate the jack cam guides fore each warp thread will be thus passed back and forth between a pair of needles. This mo tion of the jacks thus provides a double oifset loop or right and left loops in each warp in ad I provide a pair of jack guide cam rings which rotate about an axis coinciding with that of the needle cam ring. Upper cams H8 are mounted to depend from the upper cam ring I29 which is suspended at diametrically opposite points on responds to Fig. 15 and shows the needles up and the jack moved to the right. The left hand needle has now formed a loop with the warp and the right hand needle having previously cast off, re— ceives the warp thread. In this position of the needles, the latches of course are open. Section rollers I22 journaled on brackets E24, the latter A1 of Fig. 13 corresponds to Fig. 16 wherein the being mounted on brackets 44 and 58. Upper cams H8 are provided with. inclined surfaces 75 needles are down and the latches are closed, the 2,418,819 5 6 jack remaining in the same position as in Fig. 15. In this case the left hand needle casts off both weft and warp and the right hand needle latch cams in the slots for reciprocable motion therein, closes on the warp and casts off the weft. Section B1 of Fig. 13 corresponds to Fig. 17 wherein the needles are again up with the latches open, and the warp is fed to the left hand needle. Were the diagram to be continued to the right, section A of Fig. 13 and Fig. 14 would be repeated, etc. further cams to reciprocate the jack cams, jacks mounted in the ?xed cylinder for movement therein, said jack cams moving the jacks, and cam rings rotatable to reciprocate the jack cams, said last named cam rings having driving connections from the ?rst named ring. 2. A warp knitting machine comprising a needle cylinder, a circular series of needles in said cylin I intend to knit a ?ller into the fabric for 10 der, and needle cam means operatively arranged blanket cloth, overcoatings, and allied heavier goods, and I therefore provide guides for laying therewith, warp thread guiding jacks movable patent. cams. circumferentially of the needle cylinder, means to reciprocate the jacks, said means comprising a in such a ?ller in each course. These guides do cam for each jack, each jack cam being movable not form a part of the present invention however, and in fact known devices of this character can 15 relative to its jack to effect the reciprocation thereof, and further cams for moving the jack be used, as disclosed in my above identi?ed Reference is hereby made to my copending ap 3. A warp knitting machine comprising a sequence of needles in line, cam means for actuat plication S. N. 402,293, ?led July 14, 1941, Patent No. 2,346,159, dated April 11, 1944, for illustration 20 ing the needles, warp jacks reciprocable trans versely of the needles and parallel to the line of needles, jack cams operatively arranged relative to the jacks, said jack cams being reciprocable . advantages thereof, I do not wish to be limited to impart the reciprocating movement to the to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is: 25 jacks, and successive cams for reciprocating the of the cloth knitted by the present machine. Having thus described my invention and the l. A knitting machine comprising a needle cylinder, a needle cam ring, means to rotate the ring, a ?xed cylinder, slots in the cylinder, jack jack cams. .1 . FRANK J. FORD.