US2191883A - Knitted fabric - Google Patents

Description

1Feb- 27, 1940 H. FLx-:lsHER KNITTED FABRIC Filed April 15. 193s 2 Sheets-Sheet 1 Ilj T P T IFIFFIF FTFPF IFI/:IF FP T PFT PFTF F1 T T P/-T buig.

/2 4 6 83 Hghxl ATTORNEY Feb. 27, 1940. H F'LEISHER 2,191,883

KNITTED FABRI C Filed April l5, 1938 2 4Sheets-Sheef, 2

. INVENTOR fvyflejshen BY ATTORNEY UNITED ASTATES ser ' PATENT OFFICE KNITTED lFABRIC Harry Fleislier,` Watertown, Conn., assignor to LPrinceton Incorporated, Watertown, Conn., a

corporation of Connecticut Application April 15, 1938, Serial No. 202,223

. 1o claims.

This invention relates to knitted fabrics, and more particularly to a knitted fabric wherein the threads or yarns constituting the same are arranged in novel repeating sequences of tucks,

5 floats, plain stitches, and loose laid-in yarns.

One object of this invention is to provide a .new form of knitted fabric having repeating sequences of tucks, plain stitches and laid-in yarns separated from each other by floats, and producing a. plurality of parallel diagonal ridges and grooves on one surface thereof.

A still further object is to provide a novel form of knitted fabric of the above nature which will be relatively simple in construction, easy to manufacture, iiexible and elastic, non-crushable, substantially run-resisting, pleasing in appearance, and very eilicient and durable in use.

With these and other objects in view, there has been illustrated on the accompanying drawings one form in which the invention may be conveniently embodied in practice.

In the drawings:

Fig. 1 represents a diagrammatic plan view of a circular twelve feed" knitting machine for producing the improved fabric.

Fig. 5 is an enlarged vertical sectional `view of a portion of the knitting machine. v

Fig. Gais a sectional view of a vportion of the needle-actuating cam, taken on the line 6--8 of Fig. 4.

Fig. 7 is a sectional view of another portion of the needle-actuating cam, taken on the line 1-1 of F18. 4.

four of the needle beard pressers arranged in the proper sequence to produce the knitted fabric of this invention.

Fig. 9 is a fragmentary side view showing the engagement of a low-cut presser cam witha lowcutpresser, the needle beard being closed and casting olf a stitch.

Fig. 10 is a similar view showing the engagement of a low-cut presser' cam with a high-cut Fig. 8 is a fragmentary perspective view of (Cl. Gti- 169) presser-the needle beard remaining open.. for making a tuck.

Fig. 11 is a similar viw showing the engagement of a high-cut presser cam with a low-cut presserthe needle beard remaining open for I producing a tuck.

Fig. 12 is a similar view showing thev engagement of a high-cut presser cam with a. high-cut presser, resulting in the closing of the needle beard and the casting off of a stitch.

Referring now to the drawings, wherein like reference numerals denote corresponding parts l throughout the several views. the numeral Ill f (Fig.y 5) indicates a circular stationary base or table upon which are mounted a plurality of up- I' standing angle brackets Il in circular formation. The brackets II support a stationary ring member I2, which carries a plurality of horizontal arcuate plates I3 forming a segmental substantially circular sinker-operating cam memv ber.

Provision is also made of a needle-carrying cylinder I4 which is adapted to rotate within a stationary annular needle-actuating cylinder cam I-the latter being rigidly secured to the sta- I tionary table I0 in the usual manner and located below the level of the stationary ring member I2. 'I'he rotary needle cylinder Il carries a plurality of long butt needles I6 and short butt needles I'I- which are arrangedalternately around the cirf l.. cumference of the needle cylinder Il. The needles I6 and I1 are adapted to be successively engaged by the grooves of the cylinder cam I5 v (see Figs. 4-7) to cause said needles to travel upwardly and downwardly during the operation 3 of the machine. Each of the needles I6 and IIl is provided at its upper end with a spring beard I8 which, when in the open .position shown in Figs. 5, 10 and l1, is 'adapted on its downward stroke to catch theyarn or thread. l

Operating between thel successive needles I6 and I'I 'are a series of horizontal reciprocating sinkers I9, which are provided on their upper edges with substantially rectangular projections 20 adapted-to travel within a horizontalcam groovefzl formed in the sinker-operating arcuate cam plates I3. The cam groove 2| serves to control the outward and inward movement of the vsinkers I9 at the proper times.

Provision is also made of a series of pivotally I mounted vertical pressers 22 which `are adapted to close the spring beards IBof the needles I6 and I1 when engaged by a plurality of presser cams 25, herein shown as located at certain selectedonesotthetwelvelsnittingpoints. In

order to hold the pressers 22 away from the spring beards I8 of the needles I6 and I1 except when engaged by said presser cams 25, provision is made of a circular coiled spring 23 which surrounds the lower notched ends of said pressers 22. To line up the pressers 22 just in advance of the knitting points, provision is made of a plurality of guide cams 24 (see Fig. 1), which serve to direct said pressers 22 into position and avoid striking the stationary yarn carriers as the pressers revolve past said carriers.

The T-shaped presser cams 25 serve to push the pressers 22 against the spring beards I8 of the needles I6 and I1 as they pass by so that the yarn will be knitted off the needles to form stitches. It will be understood, however, that the presser cams 25 are omitted or released at certain points so that at said points the thread or yarn will not be knitted off, but will be carried in the needle beards to a later station where the yarn Will be knitted oi and there inlaid with the thread or yarn of this course forming a "tuck.

For producing the improved fabric of this invention, the machine is provided With twelve knitting stations 26, 21, 28, 29, 30, 3|, 32, 33, 34, 35, 36 and 31, to each of which different threads or yarns are fed through guides 38 and 39. As most clearly shown in Fig. 4, the cylinder cam I5 is provided with a plurality of sets of needleactuating cams 40 and 4I to control the up and down motion of the alternating short butt and long butt needles I1 and I6, respectively. Two different arrangements are employed, as indicated in Fig. 4, wherein the dotted line 42 represents the movements of the short blutt needles I 1, and the dot-and-dash line 43 represents the movements of the long butt needles I6. At the 40, only the short butt needles I1 will be held up, and at the cam 4I, only the long butt needles I6 will be held up.

As indicated in the table shown in Fig. 2 the yarns 44-55 inclusive, which are being fed to the knitting stations 26-31 inclusive, respectively, in twelve courses, are acted upon by the long and short butt needles I6 and I1 in accordance with the particular arrangement and setting of the pressers 22, needle cams 40 and 4I, and presser cams 25, at the respective stations.- 'I'he pressers 22 for acting upon the alternating long and short butt needles I6 and I1 are arranged in alternating pairs, as indicated in Figs. 2 and 8; i. e. rst, two pressers with high cuts having low cuts 51. At'the first course (or station 26), the presser cam 25 is provided with a low cut 58. At the second course (or station 21), the presser cam 25 is omitted (as indicated by an X in the last vertical column of the table in Fig. 2), whereby the pressers 22 will be held in inoperative position by the spring 23.

At the third course (or station 28) the presser cam 25 is provided with a high cut 59, and at the fourth course (or station 29) the presser cam has a low cut 58. At the fifth course (or station 38) the presser cam 25 is again omitted and at the sixth and seventh courses (or stations 3| and 32), respectively, the pressers cams 25 are each provided with a high cut 59.

At the eighth course (or station 33) the presser cam 25 is again omitted, and at the ninth course (or station 34) the presser cam 25 has a low cut 58. At the tenth course (or station 35) the presser cam 25 is provided with a high cut 59. 'I'he presser cam 25 is omitted at the eleventh course (or station 36). and the presser cam 25 wales across the fabric.

56, and then two pressers at the twelfth course (or station 31) has a low cut 58.

Throughout the machine the stationary needleactuating cylinder cams 40 and 4I are alternated, the cam 4I which raises all the long butt needles I6 being located at all odd numbered courses, and the cam 40 which raises the short butt needles I1 being located r at all even numbered courses.

Referring now to Figs. 9, 10, 11 and 12, the

pressers and presser cams are so arranged that` In accordance with the above construction, theJ yarn 44 at the irst course will be tucked at the rst Wale (indicated at T in the table of Fig. 2) due to the engagement of a presser 22 having a high cut 56 with a presser cam 25 having a low cut 58, then floated on vthe opposite surface of the fabric at the second Wale (indicated at F in said table) due to the short butt needle I1 being held down in inoperativer position. A plain stitch will occur at the third Wale (indicated at P) due to the engagement of a presser 22 having a low out 51 with a' presser cam 25 having a low cut 58; the yarn Will be floated at the fourth Wale. This sequence of operations repeats every four Wales across the fabric.

At the second course, the yarn 45 will be oated n (F) at all odd numbered Wales due to the omission of the 21. At the even numbered Wales of the second course, the yarn will be picked up by the short butt needles I1 which are raised at these wales, and loosely laid-in the fabric (indicated at I in Fig. 2). This sequence repeats every two laid-in yarn differs from a tuck former is similar to a float but is disposed on the opposite side of the fabric therefrom. This is due to the fact that the laid-in yarn is fed to the needle on its hook side, whereas the floated yarn is located on the plain side of the fabric. A tucked yarn diifers from a laid-in yarn in that it forms a loop similar to a plain stitch and is embedded relatively tightly in the f fabric, Whereas a laid-in yarn is comparatively loose.

It Will be noted that a in that the presser cam 25 at the second station l 'I'he yarn 46 at the third ycourse is stitched (P) y at the first Wale due to the fact that long butt needles I1 are raised by the cam 4I and to the engagement of the high-cut presser 22 and highcut presser cam 25, respectively; a float* F" occurs at the second Wale, then a tuck T at the third Wale due to the engagement of a lowcut presser 22 and a high-cut presser cam 25. A oat will also occur at the fourth Wale. This sequence of operations repeats every four wales.

At the fourth course, the yarn 41 is floated F" at the first wale, tucked T at the second, due to engagement of a high-cut presser 22 with a lowcut presser cam 25, then floated F" at the third Wale and stitched P at the fourth Wale due to the engagement of a low-cut presser 22 and a low-cut presser cam 25. This sequence repeats every four wales.

In the tth course the yarn 4I is loosely laid-in At the sixth course the yarn 49 is oated (F)` at the first Wale, stitched (P) at the second Wale, due to the engagement of a high-cut presser 22 with a high-cut presser cam 25; floated (F) at the third Wale and tucked (T) at the fourth Wale, due to the engagement of a low-cut presser 22 and a high-cut presser cam 2 5. This sequence also repeats every four Wales.

At the seventh course,` the yarn 50 is acted upon exactly as was the yarn 46 at the third course, the needles, needle cams, pressers and presser cams being arranged in the same manner.

At the eighth course, the yarn 5l is acted upon exactly as was the yarn 45 at the second course, the needles, needle cams, pressers, and presser cams being arranged in the same manner.

At the ninth course, theyarn 52 is acted upon exactly the same as was the yarn 44 at the first course, the needles, needle cams, pressers, and presser cams being arranged the same.

The yarns 53, 54 and 55 at the tenth, eleventh and twelfth'courses, respectively, are acted upon exactly the same as were the yarns 49, 48 and 41 at the sixth, fifth and fourth courses, respectively, the needles, needle cams, pressers and presser cams being arranged in the same manner.

From the table shown in Fig. 2 served that the above operations Will result in a fabric having two series of Adiagonally disposed rows of successive floats which cross each other at alternate wales. Parallel to the diagonal rows of floats extending upwardly to the right are a series of diagonally disposed plain stitches and laid-in yarns starting at the third, seventh and eleventh courses, arranged in the following Asequences, respectively: P-I-P,

P-P-I-P--P-I-P, and I-P-P-I-P-P-I-P. Moreover, a seriesv of diagonally disposed tucks and laid-inyarns, starting at the rst, fifth and ninth courses, are arranged in the following sequences, respectively: T, I-T-T--I-T, and

Similar rows of tucks, plain stitches and in-lays are disposed parallel to the diagonal rows of floats which extend' downwardly to the right.

Thus, at every two rows starting at the first,

third, fifth and seventh, ninth and eleventh courses, the following sequences appear:`

fT-I-T-P-I-P-T--IU P--TI-T-P-I-PT, I-P-T-I-T--PI-P, P-I-P-T--IT, and T-P-P, and IT, respectively.

The improved knitted fabric thus formed is shown greatly enlarged and With its yarns spread apart in Figs. 3A and 3B, from which it Will be noted that the tucked and laid-in yarns form diagonally Adisposed ridges indicated by a dot and dash line 60, separated by floated yarns forming diagonally disposed valleys indicated by a dot and dash line 6I alternating with said ridges.

The yabove described sequence'of the twelve courses shown will be repeated in each succeeding set of twelve courses, producing a knitted fabric machine continues to operate. The side of the fabric having the tucks, plain and laid-in stitches, will be quite rough, while the other surface having the floats will be relatively smooth.

Whiletherohasbndiscledinthisspeomit will be obas long as the cation one form in which the invention may be embodied, it is to be understood that this form is shown for the purpose of illustration only, and that the invention is not to be limited to the specific disclosures, but may be modified and embodied in various other forms Without departing from its spirit. In short, the invention includes all the modifications and embodiments coming within the scope of the following claims.

Having thus fully described the invention, what is claimed as new, and for which it is desired to secure Letters Patent, is:

1. A run-resisting knitted fabric repeating every twelve courses and four wales in which a yarn in every other Wale in every course is floated, the oats of even numbered courses being located at odd numbered Wales and the oats of odd numbered courses being located at even numbered Wales, producing two groups of diagonal rows of floats crossing each other at rightkangles throughout the fabric, the yarn at each of the second, fifth, eighth and eleventh courses comprising a series of inlays alternating with the floats.

2. A run-resisting knitted fabric repeating every twelve courses and four wales in which a yarn in every other Wale in every course is floated, the floats of even numbered courses being located at odd numbered Wales and the floats of odd numbered courses being located at even numbered wales, producing two groups of diagonal rows of floats crossing each other at rightangles throughout the fabric, the yarn at each of the second, fth, eighth and eleventh courses comprising a series of inlays alternating with the floats, and wherein the diagonal rows of floats Which extend upwardly to the right are interposed first with a series of yarns having the repeating sequence P--I-P-P-I-P, and then with a series of yarns having the repeating sequence T-IT-T-I-T"' throughout the fabric.

3. A run-resisting knitted fabric repeating every twelve courses and fo-ur Wales, in Which a yarn in every other Wale in every course is floated, the floats of even numbered courses being located at cdd numbered wales and the floats of odd numbered courses being located at even numbered Wales, producing two groups of diagonal rows of floats crossing each other at right-angles throughout the fabric, the yarn at each of the second, fifth, eighth and eleventh courses comprising a series4 of inlays alternating With the floats, and wherein the diagonal lrows of oats which extend upwardly and to the left are. alternated with a series of yarns having the repeating sequence T--I-T-P-I- throughout the fabric.

4. A run-resisting knitted fabric repeating every twelve courses and four wales, in which a yarn in every other Wale in every course is floated, the floats of even numbered courses be ing located at odd numbered wales and the floats of odd numbered courses being located at even numbered wales, producing tWo groups of diagonal rows of floats crossing each other at rightangles throughout the fabric, the yarn at each of the second, fifth, eighth and eleventh courses comprising a' series of inlays alternating with the floats, wherein the diagonal rows of floats which extend upwardly and to the right are interposed wherein the diagonal rows of oats which extend upwardly and to the left are alternated with a series of yarns having the repeating sequence T-I-T-P--I-P throughout the fabric.

5. A run-resisting knitted fabric repeating every twelve courses and four Wales in which a yarn in every other Wale in every course is floated, the oats of even numbered courses being located at odd numbered wales and the floats of odd numbered courses being located at even numbered Walls, said fabric also being made up of tucks, plain stitches and inlays arranged in repeating sequences alternating with the oats in the rst Wale, T-P-I-P-T-'Ik in the second Wale, I-T-P-I-P-T; in the third Wale, P-T-I-T-P-I; and in the fourth Wale, I-PfT-I-T-P 6. A knitted fabric comprising a plurality of courses having yarns iloated at every even numbered Wale and alternating with a plurality of courses having yarns iioated at every odd numbered Wale, and wherein every third course comprises a series of alternately iioated and laid-in yarns, the remaining courses of vsaid fabric comprising a series of tucks and plain stitches al-I ternating with the floats. v

7. A knitted fabric repeating every twelve courses and every four Wales comprising a plurality of I courses having yarns floated at every even numbered Wale alternating a plurality of courses With yarns floated at every odd numbered Wale, and wherein every third course comprises a series of alternately floated and laid-in yarns.'

the remaining courses of said fabric comprising a series of tucks and plain stitches alternating With the oats, said tucks and stitches being disposed at every odd numbered Wale in the first, third, seventh and ninth course, and disposed at every other even numbered Wale in the fourth, sixth and tenth course.`

8. A knitted fabric repeating every twelve courses and every four Wales comprising a plurality of courses having yarns oated at every even numbered Wale and alternating with a plurality of courses having yarns floated at every odd numbered Wale, and wherein a series of alternately oated and laid-in yarns is disposed at the second, fth, eighth and eleventh courses, and a. series ofl tucks and plain stitches alternating with the iioats are alternately disposedin the other courses, said tucks and stitches being disposed at the every other odd numbered Wale in the first, third, seventh and ninth courses, and

disposed at every other even numbered Wale in the fourth, sixth and tenth courses.

9. A knitted fabric repeating every v twelve courses and four .Wales comprising a plurality of courses having the yarn floated at every even numbered Wale and alternating With a plurality of courses having yarn oated at every odd numbered Wale and wherein a series of alternately oated and laid-in yarns is disposed at the second, fth, eighth and eleventh courses, the floated yarns in the second and eighth courses being disposed at the odd numbered wales and in the fth and eleventh courses at the even numbered wales, and wherein a series of tucks and plain stitches alternating with floats are disposed in the other courses, said tucks and stitches being located at the every other odd numbered Wale in theiirst, third, seventh and ninth courses and disposed at every other even numbered Wale in the fourth, sixth, and tenth courses.

10. A knitted fabric repeating every twelve courses and four wales in which the yarns of the fabric are made up of tucks, plain stitches, floats and inlays, arranged as follows: rst and ninth F-P-F-T.

HARRY FLEISHER.

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