US1755968A

US1755968A - Knitted fabric

Info

Publication number: US1755968A
Application number: US62585A
Authority: US
Inventors: Rubenstein Harry
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-10-15
Filing date: 1925-10-15
Publication date: 1930-04-22
Anticipated expiration: 1947-04-22

Description

H. RUBENSTEIN KNITTED FABRIC April 22, 1930.

1925 2 Sheets-Sheet l Filed oct. 15,

April 22, 1930. H. RUBENSTEIN KNITTED FABRIC 2 Sheets-Sheet 2 Filed OCC. l5, 1925 Patented Apr. 22, 1930 UNITED STATES HARRY RUBEN STEIN, OF BROOKLYN, NEW YORK KNITTED FABRIC Application iled October 15, 1925. Serial No. 62,585.

The invention relates to knitted fabrics and the method of and apparatus for producinv the same.

he principal object of the invention, gen- 5 erally stated, is to provide means for and a method of making a knitted fabric possessing certain characteristic features in the arrangement and location of the loops or stitches whereby an unusual and highly attractive appearance will be obtained.

Another object of the invention is to provide, in a circular knitting machine, a novel combination and arrangement of needles,

and other assol the peculiar loop or stitch formation and produce afabric having the desired characteristics.

A more specific object of the invention is to provide a method of knittin involving the employment of means inclu 'ng different sets of needles arranged in alternation and acting at certain times in alternation and at other times together so as to form loops or stitches all of which are interlinked in a certain peculiar manner to make the fabric.

rther object of the invention is to provide a knittlng method and apparatus 1n which the times at which the needles operate in alternation and the times at which they operate in unison or simultaneously are interlinkedstitches or or design.

A still more specific object of the invention s the provision of a knitting method and means for carrying it out including sets of needles having their general features in common but having certain different characteristics whereby certain of the needles will be acted upon by certain cams, others acted upon by different cams,-and both acted upon simultaneously by certain other cams so that the successively alternate and simultaneous movement will-produce the fabric desired.

To the attainment of the foregoing objects and advantages, the invention consists preferably in the method and the means for carrying it out to be hereinafter more fully described and claimed and illustrated in the accompanying drawings in which:

igure l is a somewhat diagrammatic plan View of a circular knitting machine embodying means for producing the fabric,

Figure 2 is a magnified view of the fabric produced,

Figure 3 is a vertical section through a portion of the knitting machine illustrating certain mechanical features thereof necessary to the carrying out of the method.

Figure 4 is an elevation looking at the inside of the cam means for operating the needles,

Figure 5 is a horizontal section through the cam means taken on the line 5 5 of Figure 4,

Figure 6 is a cross section taken on the line 6-'6 of Figure 4, looking in the direction of the arrows, and

Figure 7 is a cross section taken on the line 7 7 of Figure 4, likewise looking in the direction of the arrows. l

Referring to the drawings in detail, I have illustrated, more or less diagrammatically, a portion of a circular knitting machine of a well known type. Only such parts are shown as are necessary for an understanding of the present invention. Machines of this type include a stationary table 1 above which is supported, as by brackets 2, a stationary ring 3 upon which are mounted segmental or arcuate plates 4 which, together, constitute an upper circular ring. Suitably supported with respect to the-table 1 is a rotary head 5 travelling within the confines of the ring defined by the late members 4 and adjacent the inner` per1phery of a ring 6 stationarily mounted with respect to the table. The head 5 carries the needles to be described which cooperate with cam dkvices carried by the ring 6. l

In carrying out the present invention I make use of two sets of needles arranged in alternation, those of one set bein designated by the numeral 7 and havin ong butts 8 and those of the other set being designated b the numeral 9 and having short butts 10. cept in the matter of length of the butts the needles are all similar and are'provided loo 6l* While the long butt needles needles short butt needles knit at the at their upper ends with the usual beards 11 which catch the threads for carrying out the knitting action. Operating between the successive needles are the usual radially movable sinkers or pressers 12 having projections 13 thereon engaged within cam grooves 14 in a rin 15 mounted beneath the ring defined by the p ates 4, these cam grooves 14 controlling the outward and inward movement of the pressers or sinkers at the proper periodic intervals. Machines of this type are further provided with beard closers 16 for the purpose of closing the beards so that they may enter and pass through the loops of a previously made row of stitches. In actual practice these beardv closers are held in place by a circular coil spring 17 which surrounds the head 5 and which engages within notches 18 in the outer edges of the beard closers for holding the beard closers normally away from the path of movement of the beards. It is furthermore customary toprovide cams 19 located at intervals and engageable by the beard closers for the purpose of lining them u and retracting them at points in advance oi) the knitting points, at which latter mentioned points are provided cams 20 for projecting the beard closers outwardl into operative relation to the needles for e ecting closing of the beards as the needles move downwardly so thathey will pass through previously made loops or stitches and permit the same to be cast off preparatory to making the next successive row. When the machine is in operation all of the needles of course turn with the head 5, the needle butts 8 and 10 being engaged by cam means so as to be moved upwardly and downwardly at the proper intervals. u

In carrying out the invention for producing the fabric shown in Figure 2, I arrange the long and

short butt needles

7 and 9 1n alternation and provide a peculiar cam mechanism cooperatin with the butts 8 and 10 thereof for electlng knitting with the two sets of needles, at certain times in alterna,

tion andat other times together. Referring to Figure 1 it will be observed that the machine is designed to knitpwith eight

threads

21, 22, 23, 24, 25, 26, 27 and 28, which threads are led from any suitable source and brought through

suitable uides

29 and 30. It will be observed that t e number of threads corresponds with the number of cam bearing segments or sections at the plates 4, and at each ment has a knitting point located substantially at the cam 20. The knitting points for the threads 21 to 28 Aare indicated at 31, 32, 33, 34, 35, 36, 37 and 38, respectively. In the carrying out of the method the long butt knit at the

points

31 and 35, the

points

33 and 37, while both the long an short butt needles knit at the

points

32, 34, 36 and 38. 7 are knitting, at

the

points

31 and 35, the short butt needles are idle and remain in lowered position so as not to catch the threads, and while`the short butt needles are knitting at the

points

33 and 37 the long butt needles are idle and in lowered position.

In order to eil'ect this necessary needle movement, I provide cam mechanism which includes sections indicated generally b the

numerals

40, 41 and 42, the first named eing located at the

knitting points

33 and 37 the second named being located at the

points

32, 34, 36 and 38 and the last named being located at the

points

31 and 35. The section 4() is shown as including a cam 43 having an inclined upper face or shoulder 44 upon which ride both the long and the short butts of the needles. To illustrate the path of movement through the '

cam sections

40, 41 and 42, I have provided dotted lines 45 and dash lines 46, these two lines representing, respectively, the direction of travel of the short and long butt needles. extending beyond the cam 43 is a cam 47 having a shoulder or ledge 48 curved downwardly for the purpose of directing the short butt needles to a third cam 49 which is located at the

knitting points

33 and 37. The cam 47 has a downwardly inclined shoulder 50 located in the path of travel of the long butts only inasmuch as this shoulder does not project outwardly to a suiiicient extent to be engaged by the short butts. The purpose of this shoulder or surface 50 is to move the long butt needles downwardly out of the way and into inoperative position while the short butt needles are knitting. Below the cams 47 and 49 is a cam 51 having a ledge 52 along which the long butts travel after they leave the cam surface 50. The cam 49 has a downwardly inclined edge or surface 53 engaged by the short butt needles after they pass beyond the downwardly curved end 48 of the cam 47 so that the short butt needles will be moved downwardly to perform their knitting action while the long butt needles remain in lowered and inoperative position while passing along the ledge 52.

Each of the cam sections 41 located at the

points

32, 34, 36 and 38 where both sets of needles knit, includes a cam 54 having an'upwardly inclined ledge 55 upon which both the long and short butts engage after leaving the lowest point of the cam 49, this ledge acting to elevate all the needles into position preparatory to making their stitches or loops. In end to end relation to the cam 54 is a cam 56 having a ledge 57 which has one end portion horizontal and acting as a continuation of the higher end of the ledge 55 and which has its other end inclined downwardly as shown at 58. The long and short butt needles ride along the ledges 55, 57 and 58. Above the cams 54 and 56 is a cam 59 spaced somewhat from the ledge 57 so as to guide the Located above and lowered orinoperative position.

raised, While and one end of the cam 59 has a downwardly curved surface 60 leading to the upper end of an inclined surface 61 on a cam 62, this surface 61 actin to force the needle butts downwardly so tat the needles will knit at the

points

32, 34, 36 and 38.

The section 42'includes or comprises a cam 63 havin an upwardly inclined ledge 64 extending ?rom the lowest ortion of the cam 62 and projects only to suc an extent as to be in the path of travel of the long butts which will consequently engage thereu on and ride upwardly therealong, the shortl utts engaging upon a horizontal ledge 65 of the cam member`63 and remaining consequentlyin Above the cam 63 is a cam 66 corresponding to the cams 47 and 59 and having a downwardly curved end portion 67 leading to the upper end of a downwardly inclined surface 68 on a cam member 69 corresponding to the cam members 49 and 62. At the end of each section 42 is arranged a section 41. The curved lower edge of the cam 66 coacts with the upper edge of the cam 63 for properly guiding the long butts so that the long butt needles will be held elevated in position to engage and knit the threads. From the above it will be seen that at certain times, all the needles are at other periods the long and short butt needles are alternately operated to effect knitting.

In the operation, it will be seen that' when the head 5 carrying all the

needles

7 and 9, the beard-closers 16 and the sinkersor pressers 12, is rotated, the beard closers are drawn back away from the needles bythe cams 19 needle butts,

located in advance of the knitting points at which are located the cams 49, 62 and 69 for moving the short butt needles, both the long and short butt needles, and the long butt needles alone, respectively, downwardly. The exact manner of thread treatment or handling at the starting of the machine is the same as usual, and assuming that the machine has been operating to a suflicient extent to Start the fabric properly, it will be seen that when the butts 10 of the short butt neei' dles 9 come into engagement with the inclined surface 53 of the cam members 49 the short butt needles are moved downwardly. In advance of this point the long butt needles are moved downwardly along the surfaces 50 1nto inoperative position, as shown by the dash line at the right hand end of Figure 4.

As the short wardly by the cam 49 the beard closers 16 are forced toward the needles by engagement with the cams 20. The threads 23 'and 27 are of course engaged within the beards of the short butt needles and Whenthese needles are moved downwardly the beards will eng the closers 16 and be closed thereby so that the beards, carrying the threads will enter and pass through the loops thus forming butt needles 9 are moved downage t e same manner except that the long buttneedles are operated by engagement with the inclined edges 68 of the cams 69 in the sections 42, the upper and downward movement resulting in the formation of the loops 21" and 25". The threads 22`, 24, 26 and 28 are knitted by both the long and short butt needles, the needles being moved downwardl. by engagement with thedownwardly incllned surface 61 of the cams 62 in the sections 41, the exact action being the same as above indicated and the loops 22a, 24", 26L and 28a being formed by the short bu-tt needles and the loops 22", 24", 26" and 28" being formed by the long butt needles.

In actually forming the fabric, the loops 23a and 27a are arranged in alternation with the loops 21" and 25" of a preceding row, and the loops 22", 24", 26a and 28" are interlinked with the loops 23*il and 273while the loops 22", 24", 26" and 28" are interlinked with the loops 21" and 25" as clearly indicated in Figure 2. In this way it is quite evident that the thread between the successive loops 23a and 27"L and between the successive loops 21b and 25" will overlie the body or foundation defined by the interlinking of the threads at those knitting points where both the long and short butt'needles operate, thus producing a somewhat ribbed effect such as that illustrated.

From the foregoing description and a study of the drawings, it will be seen that I have thus provided a fabric together with a method and means for making the same, embodying certain known principles of design but involving an arrangement of operatively related elements which will produce a fabric possessing certain highly desirable characteristics in the matter of pattern which will be quite distinctive.

While I haveI shown and described the preferred embodiment of the invention, it should be understood that the detailed steps in t-he method and the specific arrangement, location and correlation of the parts is merely for illustrative purposes only as I reserve the right to make all such changes and modifications as will not depart from the spirit of the invention or the scope of the ,claim hereunto appended.

Having thus described -the claim: l

A knitted fabric comprising a plurality of threads in corresponding courses, one knitted at alternate wales and floated at intervening wales in one course, one knitted at every wale of the second course, one knitted at intervening wales and floated at alternate walesof the third course, and one knitted at every wale of the fourth course, the second and invention, I

The sinkers or pressers fourth threads `for beneath the a Wale.

In testimo ny wh ming a foundation fabric floats of the first and e Y stagiered float relation erof loops in every of a yarn of a thread decrease the loops in ereo I aix my signature ARRY RUBENSTEIN.