Патент USA US2410710код для вставки
Nov. 5, 1946. ' ‘ F, w, BROWN _ - 2,410,710 KNITTING MACHINE AND METHOD OF KNITTING Filed May 7, 1945 2 Sheets-Sheet 1 Nov. 5, 1946. F. w. BROWN 2,410,710 KNITTING MACHINE AND METHOD'OF KNITTING ' Filed May '7, 1945 2 Sheets-Sheet 2'. M, 5Lekb8nu.b» I?Q‘7% .\\ , , “Il i.N, I NT W. w W I'M/(Brawn. 2,410,710 Patented Nov. 5, 1946 rent UNITED STATE OFFICE 2,410,710 KNITTING TACHINE AND METHOD OF KNITTING Frederick W. Brown, Mount Holly, N. J. Application May 7, 1945, Serial No. 592,320 (01. 66-63) 7 Claims. 1 er, as explained, is effected by using a knittin ‘My invention relates to knitting machines and has particular reference to the cam and jack machine of the type shown in Reissue Patent No. mechanism. In the ordinary type of knitting machine Robaczynski. 20,423 issued June 22, 1937, to Ladislaus needle bed. Needles are mounted upon the rice In the accompanying drawings forming a part of this application and in which like numerals are employed to designate like parts throughout die bed and are operated by jacks. The jacks the same. known as links and links, a carriage equipped ‘with a cam construction is reciprocated over a ' Figure 1 is a plan view, parts in section, of carriage. The jacks and needles reciprocate in 10 the cam system and needle bed and associated elements of a knitting machine, channels formed in the needle bed andthere is Figure 2 is a transverse section taken on line a comb at one edge of the needle bed. 2—2 of Figure 1, During the knitting operation, particularly ‘Figure 3 is a similar view taken on line 3-—3 of when the needles are casting o? to form a stitch, the needle upon which the stitch is being formed 15 Figure 1, Figure 4 is a diagrammatic view of the single is retracted and the free end of the needle moves butt and double-butt jacks and associated ele from the comb teeth of the needle bed, and this are moved by the cam construction secured to the ments, and action forms a new loop upon the needle. The Figure‘ 5 is a diagrammatic view of a knit length of the loop depends upon the distance that the free end of the needle is retracted from the 20 sweater produced by my improved knitting ma chine. comb. The longer the formed loop is, the looser In accordance with my invention, 1 provide a will be the knitted fabric. knitting machine comprising a front needle bed In the knitting of sweaters, it was heretofore 50, having channels ll formed by partitions l2, the practice to knit the body portion of the sweater ?at and the tail of the sweater was knit 25 having teeth 13, constituting a comb. The nu meral l4 designates needles of the double latch tighter than the remainder of the sweater. It is type. The needle bed I0 is stationary and is hor necessary to knit the tail of the body portion of izontal, and the'needles M are accordingly held the sweater tighter in order that the sweater will horizontal and are adapted to be reciprocated properly ?t the user. It was the practice to knit within the channels ll. Certain of the needles a band or border separate from the body of the M are reciprocated by double-butt jacks l5, slide sweater and attach the same to the body by sew able within the channels H,.and the remaining ing or the like.‘ These bands were employed to needles I 4 are reciprocated by single-butt jacks attach buttons to the sweater and to provide but it. As more clearly shown in Figure 4, there are tonholes. It has also been the practice to knit these bands upon the edges of the body portion, 35 two sets of double-butt jacks l5 near the ends of the needle bed I!) and the single-butt jacks and following the usual practice of knitting the it are arranged between the two sets of double tail of the body portion closer than the remain butt jacks. The number of double-butt jacks der of the body portion, the lower ends of the employed in each set will depend upon the de bands were knit closer. These bands are em ployed to attach buttons to the sweater and to 40 sired width of the band to be knit. This num ber usually varies from eight to sixteen. The provide buttonholes, as stated. These bands have number of single-butt jacks It will‘depend upon proven togbe unsatisfactory inasmuch as the the width of the body portion to be knit and I closely knit tails of the bands tend to shrink, curl may employ two hundred and twenty single-butt or draw. ' ‘ In accordance with my invention I knit the 45 jacks 16. Figure 4 is diagrammatic and does not accurately indicate the precise number of body portion of the sweater and the tail and knit double-butt or single-butt jacks, and of course the tail tighter than the body portion, as was the the number may be widely varied. ‘ Each jack l5 usual practice. The bands are knit upon the and it serves to reciprocate a needle Ill. The body portion and tail but the bands are knit with the same tension throughout their entire 50 needles actuated by the double-butt jacks l5 pro duce the bands ll, ‘while the needles actuated by length and may be of the same tension as the the single-butt jacks it produce the body porbody or looser for a two-ply band. This elimi nates the objectionable tight knit tail embodied in the previous bands. I - tion I?- having the tail l9, knit tighter than the body portion I8. The bands H are knit with the ' The knitting of the body'portio'n of the sweat- 55 same degree of .tension or looseness throughout. 2,410,710 the entire length. These bands may be of the same degree of tension as the body portion I 8 but when two-ply, they would be knit looser. The buttons are secured upon one band I‘! and the buttonhoies formed in the other band. E'ach double-butt jack i5 has an upstanding butt 22 and an upstanding auxiliary butt 26’, while each single-butt jack i6 is provided with an upstanding butt 2 I. These butts project above 4 their high points 34 moved outwardly further, and when this is done, the guide cams 36 will be moved inwardly longitudinally. The stitch cams 29 may be provided at their outer ends with tails 29’, to enter recesses 30'. The two longitudinal sets of cams form a passage 31, which receives the butts 26 of the jacks I5 and the butts 2| of the jacks I6. The operation of the machine is as follows: The tension of the yarn upon the needles re 10 tains the butts 2i of the double-butt jacks I6 in the shanks of the jacks, as shown. Mounted above the jacks i5 and i6 and the engagement with the inner edges of the inner set needle base Iii is a reciprocatory carriage 22, of cams including the bridge cam 23. The ten which is moved over the needle bed It through. sion of the yarn also tends to retain the auxiliary out the entire length of the same and beyond the butts 20' of the double-butt jacks in engagement sets of jacks I5, Figure 4. The usual means is with the edges of the outer set of cams including employed ,to reciprocate this carriage which, the stitch cams 29, until the face 24 of cam 23 is moves in a horizontal plane parallel with the nee reached by butts 26, at which time the butts 20' dle 'bed. “ will have passed the high point 34 of stitch cam 29 and the butts 26 will then be free to engage the face 24 of the bridge cam 23, so that edge 24 will then control the action of the double-butt construction comprisesga bridge cam 23, which ‘ jacks. Assuming that the carriage 22 is at the is fixedly secured to the lower face of the car right end of the needle bed I0, Figure 4, and is riage 22 by any suitable means. This bridge cam travelling to the left, as indicated by the arrow, has an inner face 24, for acting upon the ‘butts 25 then the set of double-butt jacks IE to the right 2| of the single-butt jacks I6, and the butts 26 will be ?rst operated in the knitting of the band of the double-butt jacks I5, for controlling the I‘! to the right, Figure 5. The auxiliary butt 20’ movement of the several needles in proper timed will now engage with the outer face of the leading order. Arranged upon opposite sides of the guide cam 36 and is brought thereby into engage bridge cam 23 are stitch cams 25, adjustably se 30 ment with the stitch cam 29 and will engage the cured to the lower face of the carriage 22. These high point 34. When in this position the double stitch cams have high points 26, which deter butt jack I5_will retract its needle for the entire mine the maximum retraction of the single-butt length of its stroke and the yarn pulled back from jacks I6 but not the maximum retraction of the the comb, as shown in Figure 3. Figure 2 shows double-butt jacks l5, Disposed upon the outer 35 the position that the needle has before being re sides of the stitch cams '26 are guide cams 21 and tracted by either jack I5 or IE. As the carriage 28,‘ mounted upon the lower face of the carriage 22 continues to travel to the left, each successive Arranged beneath the carriage 22 and secured thereto, is my improved cam construction, which reciprocates the three sets of jacks. This cam 22. The cams 2'! are ordinarily yieldably mount ed upon the carriage 22 so that they may move double-butt jack I5 is retracted and as its butt longitudinally slightly, moves forwardly so that its butt 26 may engage the cam face 24 of the bridge cam 23, in proper The stitch cams 25 con- _ 20' passes from the high point 34, the jack again trol the length of the loops formed in knitting the body portion of the sweater. The stitch cams order. The trailing stitch cam 29 engages the 25' .do‘not' retract the .doubleebutt jacks I5 for auxiliary butt 20' of each jack I5, to the right, controlling‘ the length of the loops which form as the carriage 22 continues to move to the left and the'bands H, but a separate or auxiliary set of 45 the high point 34 of the stitch cam 29 again re cams is'employed for this purpose.’ tracts each double-butt jack I5 for the maximum This separate or auxiliary set of cams comprises distance forming the longer loop inthe band I‘! to the right and the knitting now occurs. As the auxiliary stitch cams 29, mounted upon the lower carriage 22 passes beyond the right group of face" of the carriage 22. Each stitch cam 29 is preferably adjustable to Vary the position of its 60 double-butt jacks I5, the butts 2! of the single high point and forthis purpose it may be pivotally butt jacks I6 engage the inner faces of the inner connected at its inner end with the carriage by group of cams including the stitch cams 25, and when the high point 26 engages the butt v2|, the a pin 36 and may have a transverse slot 3 i, to re jack I6 is retracted to the end of its movement ceive a set screw '32’ and a transverse slot 32 to receive a pin 33. These screws and pins are 55 and the needle will pull the yarn. When the trail ing stitch cam 25 has its high point brought into secured to'the carriage 22 and are flush with the engagement with each butt 2!, the jack I6 is re lower face of the cams 29. Each stitch cam 29 tracted and the loop is formed and the knitting has a high point 3A, which engages the outer or auxiliary butt 20’ of each bouble-butt jack I5 to occurs. This formation of the loop is the same as retract this jack for the maximum distance. The 60 shown in Figure 3, except that the loop will not be as long as the loop A but about two thirds as long. inner butt 2%) of this double-butt jack I5 is dis The knitting is started at the tail end of the posed upon the inner edge of the stich cam 29 body portion and ?rst produces the tail I9 and the and will engage with the face~24 of the bridge cam band I ‘I. The loops pulled by the single-butt jacks 23. The high point 34 determines the maximum length of the loop pulled in knitting the band l1, 65 I6 in forming the tail l9 are shorter than the and‘ this loop is longer than the loop pulled by loops pulled by the double-butt jacks I5 in form the high point 26 in knitting the body portion of ing the bands i'i. After the tail I9 is knit the the sweater; stitch cams 25 are adjusted so that the high points ‘The numeral 35 designates a center cam ar 26 are higher and the single-butt jacks I6 will ranged between the inner ends of the stitch cams 70 then pull longer loops in knitting the body portion 29. Disposed upon the outer sides of the stitch I8. The tension of the tail I9 is greater than the cams 28 ‘are guide cams 36, which are mounted tension of the body portion I8. The tension of upon the carriage 22 and are preferably longi the body portion I8 may be the same as the ten tudinally adjustable. The stitch cams 29 are now slon of the bands I l or the tension of the bands I? at'th'e minimum adjusted position and may have 75 maybe less than the tension of the bodypQrt-ion 2,410,710 l8. The stitch cams are adjustable to vary the elevation of their high points 26 and the stitch cams 29 are adjustable to vary the elevation of their high points 34, and the action and adjustment of the stitch cams 29 are independ ent of the stitch cams 25. The stitchcams 25 are disposed upon opposite sides of the bridge cam 23 and have no control over the action of thevjacks when their butts engage the face 24' like having a, body portion with a tail and side band, a needle bed, a set of needles mounted upon the needle bed to knit the body portion and tail, a second set of needles mounted upon the needle bed to knit the band, single-butt jacks toshift the body portion knitting needles, dou ble-butt jacks to shift the band knitting needles, each double-butt jack having amain butt and an auxiliary butt, a ?rst cam structure includ of the bridge cam, and the same'is true with‘ 10 ing stitch cams arranged to engage the butts of the single-butt jacks after the needles in the respect to the stitch cams 29. . body portion knitting group have engaged the When the carriage 22 reaches the set of jacks yarn, a separate cam structure including stitch l 5 to the left, these jacks are'operated in the same cams arranged to engage the auxiliary butts of‘ manner as explained in connection with the jacks IE to the right. The “carriage now passes out 15 the double-butt jacks after the needles in the band knitting group have engaged the yarn, the wardly beyond the left set of jacks l5. Upon its main butts of the double-butt jacks being adapt next stroke the carriage returns to the starting position to the right. While the carriage is trav ed to engage the ?rst cam structure when the elling to the right, the high points 34 of the cams double-butt jacks are released from the control 29 engage the auxiliary butts 20' retracting the 20 of the second cam structure, a carriage move able with relation to both sets of butts and means jacks [5, in succession, and the knitting occur ring when the trailing high point 34 retracts the to fxedly secure the cam structures to the car jacks l5. In a similar manner, the high points riage so that all stitch cams travel in a ?xed path during the knitting operation'of the ma 26'engage the butts 2| and retract the jacks IS in succession, the knitting occurring when the trail ing high points 26 reach the butts 2|. When the 3. In a machine for knitting a sweater or the like'having a- body portion with a tail and side carriage reaches the second set of jacks i5 to the right, these jacks are again retracted in succes band, means to knit the body portion and tail in sion by the high points 34 and the same opera . cluding a set of needles and single-butt jacks, tion occurs as stated in connection with the jacks 30 means controlling the operation of the single butt jacks including stitch cams having high l5 to the left. ' ‘ By virtue of this operation I can knit the bands points arranged to engage the butts of the single I‘! integral with the body portion l8 of the sweater butt jacks after the body portion knitting needles chine. . ' and have these bands of the same tension or loose have engaged the yarn, means to knit the band ness throughout their entire length since the 35 including double-butt needles and jacks, each lengths of the loops in these bands remain the double-butt jack including a main butt and aux same, while the tail [9 of the body It! is knitted iliary butt, and means to controlthe operation tighter than the body portion, since the'loops in of the double-butt jacks including stitch cams the tail are made shorter by adjusting the stitch having high points arranged to engage the aux cams 25 to lower their high points. 40 iliary butts after the needles in the band knit It is to be understood that the form of my in ting group have engaged the yarn, the high points of the second named cams being disposed vention herewith, shown and described is to be taken as a preferred example of same and that higher than the high points of the ?rst named various changes in the shape, size, and arrange cams, the arrangement being such that the stitch ment of parts may be resorted to without depart 45 cams for the double-butt jacks retract them for ing from the spirit of my invention or the scope a greater distance than the single-butt jacks are of the subjoined claims. retracted by their stitch earns, the main butts Having thus described my invention, what I of the double-butt jacks co-acting with the con claim is: ' trol means of the single-butt jacks when the dou 1. In a machine for knitting a sweater or the 50 ble-butt jacks are freed from control by the con like having a body portion with a tail and side trol means of the double-butt jacks and means band, a. needle bed, a set of needles to knit the to reciprocate all cams in a ?xed path during the body portion and tail, a second set of needles to knitting operation of the machine. knit the band, single-butt jacks to shift the body 4. In a machine for knitting asweater or the portion knitting needles, double~butt jacks to 55 like having a body portion with a tail and side shift the band knitting needles, a ?rst cam struc bands, means to knit the side bands including ture arranged to engage the butts of the single sets of needles and set of double-butt jacks, each butt jacks after the body portion knitting needles have engaged the yarn and being adjustable to double-butt jack having a main butt and an aux iliary butt, means to knit the body portion and vary the tension of the body portion and tail, a 60 tail including a set of single-butt jacks arranged separate cam structure arranged to engage cor between the sets of double-butt jacks, means to control the action of the single-butt jacks includ responding butts of the double-butt jacks after ing adjustable stitch cams having high points the needles in the band knitting group have en arranged to engage the butts of the single-butt gaged the yarn for regulating the tension of the band, the other butts of the double-butt jacks 65 jacks after the needles in the body portion knit ting group have engaged the yarn, means to con being adapted to engage the ?rst cam structure trol the action of the double-butt jacks including when the double-butt jacks are released from the stitch cams having high points arranged to en control of the second cam structure, the separate gage the auxiliary butts after the needles in the cam structure being permanently arranged in the path of travel of the said corresponding butts 70 band knitting groups have engaged the yarn, the main butts being adapted for co-action with the of the double-butt jacks during the knitting op control means of the single-butt jacks and means eration of the machine, and a carriage upon to reciprocate each cam in a ?xed path during which the cam structures are mounted and move the knitting operation of the machine. able with relation to both sets of butts. 5. In a machine for knitting a sweater or the 2. In a machine for knitting a sweater or the 75 2,410,710‘ 7 8 like having a body. portion with a tail and side the stitch cams being adjustable to vary the band; means to knit the body portion and tail position of their high points, the main butts of including a'set of needles and a 'set of single the double-butt jacks co-acting with the con butt jacks; means to knit the band including a trol means, and a cam structure including stitch setoof needles and a set of double-butt jacks, each 5 cams having high points arranged to engage the double-butt jack having a main butt and aux auxiliary butts after the needles in the band. ilia'ry butt, means for controlling the action of knitting group have engaged the yarn, the last the single-butt jacks including stitch cams hav named stitch cams being adjustable to vary the ing'high‘points arranged to engage the butts of position of their high points ‘and means to recip the singles-butt jacks after the needles of the body 10 rocate each vcam in a ?xed path during the knit portion knitting group engage the yarn to re ting operation of the machine. ' tract the same, themain butts of the double T7. The method of knitting a sweater having a butt jacks co-acting with the control means, and body portion and tail and side band, comprising stitch cams having high points arranged to en advancing a ‘set of needles and engaging the yarn gage the auxiliary butts after the needles in the. 15 and retracting the needles to form loops in pro band knitting groups engage the yarn for re ducing the tail and repeating the cycle of opera tracting the double-butt jacks independently of tion for a suitable number of times, advancing the ?rst named stitch cams and means to recip the same set of needles to engage the yarn and rocate each cam in a ?xed path during the knit retracting the needles for a greater distance ting operation of the machine. 7 20 for forming longer loops in the body portion and - 6. In a machine for knitting a sweater or the repeating the cycle of operation for a suitable likehaving a body portion and a tail and side number of times whereby the tail has a greater band‘, means to knit the body portion and tail tension than the body portion, advancing an including a set of needles and set of single-butt other group of needles and engaging the yarn jacks, means to knit the band including a set of 25 and retracting such group of ‘needles and repeat needles and set of double-butt jacks, each dou ing the cycle of operation for a suitable number ble-butt ‘jack having a main butt‘ and auxiliary of times and retracting the needles in each cycle butt, means for controlling the action of the of operation for the same distance for forming single-butt jacks including stitch cams having ,, high points arranged to engage the butts of the single-‘butt jacks after the needles in the body portion knitting group have engaged the yarn, loops in the side band, whereby all loopsin the side band have‘ the same length. FREDERICK \V. BROWN.