US2543172A - Circular knitting machine - Google Patents

Circular knitting machine Download PDF

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Publication number
US2543172A
US2543172A US723438A US72343847A US2543172A US 2543172 A US2543172 A US 2543172A US 723438 A US723438 A US 723438A US 72343847 A US72343847 A US 72343847A US 2543172 A US2543172 A US 2543172A
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United States
Prior art keywords
needles
split
knitting
thread
cam member
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Expired - Lifetime
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US723438A
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English (en)
Inventor
Javorek Jaroslav
Vanatko Antonin
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BATA NARODNI PODNIK
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BATA NARODNI PODNIK
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Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/42—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration
    • D04B9/46—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof

Definitions

  • This invention relates to circular knitting machines and has for its object to simplify the means hitherto used in an operative system in circular knitting for the manufacture of splitworked hosiery and so to improve them that the split-worked hosiery has a better appearance.
  • the means hitherto employed in which at each course of the circulating needles it was the object to obtain always at the same place a change between two or more thread guides, consisted of thrust cams which were xed on anv auxiliary pattern drum revolving synchronously with the needle cylinder and driven by the main shaft.
  • This arrangement necessitated the interposition of a transmission device in the form of levers or connecting bars between the auxiliary pattern drum and the thread guide.
  • the invention does away with the aforesaid disadvantages; it makes possible a greatly simplied construction of the machine and scrupulously neat lines of loops in the split or joining seam.
  • the present invention consists substantially in this, that on the cam frame vadditional cam members are provided, by means of which the 2 knitting needles, the butts of which are of different length, are moved into or out of the range of the stationary thread guides.
  • Figure l is a side view of the lower part of a stocking with a split-worked sole D and the upper part B of the heel,
  • Figure 2 a partial view of the loops of a splitworked part to an enlarged scale
  • Figure 3 a view of the latch needles used
  • Figure 4 the arrangement of the needle butts in the ring of needles and a diagrammatic representation of the guiding of various threads
  • Figure 5 a vertical section through the needle cylinder and the pattern drum
  • Figure 6 a diagrammatic representation of the motion of the needle hooks with respect to the thread guides, ⁇
  • Figure 8 a view from above on to the cylinder cam frame shell
  • Figure 12 a section through the eccentric supporting means of the thread guides
  • Figure 14 an arrangement of the presser of the usual construction
  • Figures 15-18 the paths followed by the needles during normal knitting without split-work and Figures 19-22 the paths followed by the needles during the split-work.
  • the circular knitting machine of a kind known per se, with reference to which the invention shall now be explained, is provided with a revolving needle cylinder I with normal needles 2, 3, 4, ( Figure 3), of which about half of all the needles disposed around the periphery have short butts 2a and the other half long butts 3a ( Figure 4).
  • Figure 3 normal needles 2, 3, 4,
  • Figure 4 At one end of the set 3a, of long-butted needles are two needles 4 with butts of medium length and at the other end one needle 5 with a quite short butt.
  • the arrangement may, however, also be such that only one needle 5 with a quite short butt is provided on one side and one needle 4. with a butt of medium length on the opposite side.
  • the short-butted needles 2 serve the purpose of knitting the rear side of the length A, the split-worked upper part B of the heel, the heel C and the split sole D.
  • the long-butted needles 3 serve the purpose of knitting the front side of the length A and the upper side of the foot E ( Figure 1).
  • the medium-butted needles 4 and the quite short-butted needle 5 act as binding or joining needles (split needles) between the knitted upper part and the split-worked upper part B of the heel and the sole D.
  • the rows of loops F, formed on the needles 4 and 5, therefore contain all the threads in common ( Figures 2, 4)..
  • Six thread guides 5 to II are provided, of which, for instance, the two thread guides 6, 'i serve the purpose of knitting the length A and the instep part E in reverse plaited pattern, whilst the thread guide I I is used for knitting the split sole D and the split-worked upper part B of the heel, the thread guide 8 for knitting the heel C, the thread guide 9 for knitting the top and the thread guide IU for instance for striping or for other patterns.
  • the operative system consists of a stationary cylinder cam frame shell I8 ( Figure 8) with the cam members I9, 20, 2I ( Figure 7) of the usual construction, the modified central, upper cam member 22, and the lower cam member 23, and the cam member 24 according to the invention.
  • the cam member 24 according to the invention can be brought into and out of the operative position with respect to the needle cylinder and, during the split work, sinks (as will be seen in Figures 20-22) al1 the needles with the exception of the short-butted needle 5 ( Figure 19) in front of the thread guides 6, 'I which remain in the operative position and knit the upper part of the foot ( Figure 6).
  • the radial adjustment of the cam member 24 with respect to the needle cylinder is effected by the thrust cam 26 fixed on the control drum Il ( Figure 5), with its sliding surfaces 27, 23, 29 of diierent height and by the push bar 3i which slides on them with its end 30 and on which a lifting plate 32 with a symmetrical incision 33 is xed by screws 34.
  • the cam member 24 is rigidly connected with a sliding member 35 which is guided in the bracket 3B of the right-hand picker 3l ( Figure 8).
  • the eXtreme positions of the sliding member 35 are fixed by a. pin 36 provided in it, which slides in the slot 39 of the small cover plate 4E) screwed to the bracket 36.
  • a two-armed lever 43 capable of turning about a pivot 44 acts with its right-hand arm on the sliding member 35.
  • To its left-hand arm is xed by means ofscrews 4l a small plate 48 which with its bevelled surfaces on both sides slides either on the upper or the lower surface of the incision 33.
  • the cam member 24 has its concave surface in the operative position for the knitting of split work, that is to say, is at such a distance from the needle cylinder, that only the quite short-butted needle 5 will pass through it and will therefore not be sunk (Figure 19).
  • the cam member 2I which is also actuated by the control drum I'I, adjustable radially with respect to the needle cylinder and is of ordinary construction has, during the knitting of the split part, its concave surface at such a distance from the needle cylinder that the short-butted and medium-butted needles 2, I and the needle 5 with the quite short butt pass through it ( Figures 19, 20, 22), their hooks travelling in the paths I, III ( Figure 6), in which they catch hold of the thread 52 of the thread guide II, intended for the split part, whilst the needle hooks of the long-butted instep needles 3 has already been sunk by the cam member 2
  • the cam member 24 will, owing to achange Y in the position of the control drum I1 and of the sliding surface 28 of the thrust cam 26 ( Figure 5), occupy a position of rest, that is to say, itis at such a distance from the needle cylinder, that the butts of all the needles pass through it and are therefore not sunk.
  • of known construction Figures -18).
  • a further characteristic 'feature of the invention consists in this, that during the knitting of split-worked hosiery both the split thread guide I I used for the lower part D (sole) and the thread guides 6, 'l used for the upper .part E of the foot part remain around the lwhole of the periphery of the courses of loops in an operative, stationary position Vand are put out of operation only during the production of top, heel and toe.
  • the needles 2 with their butts 2a are before they receive the split thread 52, so controlled in their position as tion, that is to say, those thread guides, which are operative during the knitting of a tubular portion of the stocking deliver their ⁇ thread to the whole row of needles.
  • both the just mentioned split thread guides and those freshly put in operation deliver their threads only to those needles, which come within their range of action with the aid of cam members according to the invention.
  • the operative and the inoperative position of all the thread guides is brought about in a known manner by the control drum with thrust cams and push bars.
  • a further feature consists in this, that indii vidual thread guides are mounted so as to be capable of 4rocking on eccentric bushes supported on a common journal, by turning which a relative displacement of those thread guides in a radial plane to the needle hooks is effected and thus lthe angle, at which the yarns are supplied ⁇ to the latter, can readily be altered.
  • cam member 2i is also at such a distance from the needle cylinder, that the butts of all the needles are not sunk by it.
  • the cam members 2i, 24 being inoperative, it becomes possible for the two thread i3, 55 to be taken from the thread guide E, 'I by all the needle hooks.
  • the thread guide II with the split thread 52 is brought by the push bar I5 and the thrust cam and control drum l l into the operative position and brings the split thread 52 into the ⁇ hooks of the last short-butted needles 2, the
  • the cam member 2i is brought into operation in a known manner and linfluences in the vradial direction only the long-butted needles 3, whilst the row of short-butted and medium-butted needles 2, l, 5 moves past the cam member 2i and is only sunk by the cam member I9 ( Figures 19-22).
  • the cam member 213 is brought by turning the control drum Il, the end 3i! of the push bar bearing on the upward slope of the sliding surface 27 of the thrust cam, towards the needle cylinder in the radial direction, but at first only so far that, after the free passage of the short-'butted needles 2, 5, the medium-butted and long-butted needles 3, I are sunk. During the sinking of these needles the push bar end 35 passes, through the further revolution of the control drum Il, on to the low sliding surface 27 of the thrust cam 25,
  • cam member 24 is brought in the range of the long-butted needles 3 still closed to the needle cylinder, which results in the sinking of all the butts of the needles 2, 3, 4 with the exception of the quite short-butted needle ( Figures 19-22). While the cam member 24 is moving into this position, the rest of the shortbutted needles 2, the quite short-butted needle 5 and the medium-butted needle 4 move past the cam member 2
  • the short-butted needles 2 which follow the aforesaid needles are also sunk by the cam member 24, but pass through the cut-away place ⁇ 5l provided by the invention in the cam member 23 (see Figure 22) without being raised by the sliding surface of the later ( Figure 11) consequently they cannot take up any threads 49, 5U from the thread guides 6, T.
  • the two threads 49, 5E thus put out of action, lay themselves, drawn by the medium-butted needles 4, into the end l of the presser S2, which is in the operative position ( Figure 14) from which the previously inserted, free split thread 52 knits itself again into the needle hooks of the needles 2, 5, 4 through the rotation of the needle cylinder.
  • the needles 3 move in accordance with Figure 21 (knitting the upper part of the foot) and the needles 2 in accordance with Figure 22 (knitting the split-worked upper .part of the heel and the split sole).
  • the cam member 2l is moved away from the needle cylinder in a known manner through the rotation of the control drum I1.
  • the cam member 24 increases its distance from the needle cylinder through the push bar end 3S running up on to the raised sliding surface 28 of the thrust cam 25.
  • the thread guides 6, '1, H which during the knitting of the splitworked upper part of the heel were in a xed operative position, are replaced by the thread guide 8 which now alone inserts the heel thread into the shcrt-butted needles 2.
  • the thread guide 8 is again replaced by the thread guides 6, 7, Il for knitting the split-worked part D (split sole) and through the further rotation of the control drum I'l, during which the sliding surface 29 comes into action, as at the beginning of the split-worked part B (upper part of heel), the parts 2
  • a circular knitting machine for the manufacture of split-worked hosiery comprising: a cam frame, a fixed central upper cam member thereon, knitting needles having short butts, knitting needles having butts of medium length, some of the said knitting needles being adapted to serve as connecting needles, knitting needles having long butts, a radially movable cam member disposed beneath the central upper cam member and movable into one position to allow the connecting needle with the shortest butt t0 pass through while causing the other needles to sink and a Xed lower cam member on the cam frame, the active surface of which, in the circumferential path of movement of the needles is circumferentially spaced rearwardly of the said radially movable cam member and is adapted to raise again the needles with medium and long butts while permitting the needles with short butts to pass through without altering their vertical height.
  • a circular knitting machine for the manufacture of split-worked hosiery comprising: knitting needles, hooks on the knitting needles, a common journal mounted in a stationary position, eccentric bushes supported on the common journal, a split lower thread guide to be used for knitting the lower part of the hosiery, and upper thread guides to be used for knitting the upper part of the hosiery, the said lower and upper thread'guides being rockably mounted on the eccentric bushes in such a way that by turning the bushes the thread guides are displaceable in radial planes relatively to the needle hooks, whereby the angle between the threads supplied can be altered.
  • a circular knitting machine for the manufacture of split-worked hosiery comprising: a cam frame, a fixed central upper cam member thereon, knitting needles having short butts, knitting needles having butts of medium length, some of the said knitting needles being adapted to serve as connecting needles, knitting needles having long butts, a radially movable cam member disposed beneath the central upper cam member and radially movable into one position to allow the conecting needle with the shortest butt to pass through while causing the other needles to sink, a fixed lower cam member on the cam frame, the active surface of which, in the circumferential path of movement of the needles, is oircumferentially spaced rearwardly of the said radially-movable cam member and is adapted to raise again the needles with medium and long butts while permitting the needles with short butts to pass through without altering their vertical height, additional cam members provided on the cam frame, by means of which the said knitting needles are moved into and out of range of

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US723438A 1942-08-07 1947-01-21 Circular knitting machine Expired - Lifetime US2543172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE239938X 1942-08-07

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US2543172A true US2543172A (en) 1951-02-27

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US723438A Expired - Lifetime US2543172A (en) 1942-08-07 1947-01-21 Circular knitting machine

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US (1) US2543172A (enrdf_load_stackoverflow)
CH (1) CH239938A (enrdf_load_stackoverflow)
NL (1) NL60913C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079780A (en) * 1957-11-25 1963-03-05 Kale Knitting Mills Inc Solid color patterned stocking with split foot

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1159873A (en) * 1914-07-20 1915-11-09 Scott & Williams Inc Yarn feeding and changing mechanism for knitting-machines.
GB209190A (en) * 1922-10-05 1924-01-07 Charles Howard Dennis Clark St Improvements in or relating to the manufacture of knitted fabrics
US1939818A (en) * 1931-05-29 1933-12-19 Standard Trump Bros Machine Co Method and machine for producing knitted split fabric
US2009694A (en) * 1931-03-16 1935-07-30 Standard Trump Bros Machine Co Knitting machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1159873A (en) * 1914-07-20 1915-11-09 Scott & Williams Inc Yarn feeding and changing mechanism for knitting-machines.
GB209190A (en) * 1922-10-05 1924-01-07 Charles Howard Dennis Clark St Improvements in or relating to the manufacture of knitted fabrics
US2009694A (en) * 1931-03-16 1935-07-30 Standard Trump Bros Machine Co Knitting machine
US1939818A (en) * 1931-05-29 1933-12-19 Standard Trump Bros Machine Co Method and machine for producing knitted split fabric

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079780A (en) * 1957-11-25 1963-03-05 Kale Knitting Mills Inc Solid color patterned stocking with split foot

Also Published As

Publication number Publication date
NL60913C (enrdf_load_stackoverflow)
CH239938A (de) 1945-11-30

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