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US3006172A - Flat warp knitting machines - Google Patents

Flat warp knitting machines Download PDF

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Publication number
US3006172A
US3006172A US18038A US1803860A US3006172A US 3006172 A US3006172 A US 3006172A US 18038 A US18038 A US 18038A US 1803860 A US1803860 A US 1803860A US 3006172 A US3006172 A US 3006172A
Authority
US
United States
Prior art keywords
sinker
needle
needles
neb
face
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US18038A
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English (en)
Inventor
Porter Allan William Henry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HOBOURN F N F Ltd
Hobourn-Fnf Ltd
Original Assignee
HOBOURN F N F Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HOBOURN F N F Ltd filed Critical HOBOURN F N F Ltd
Application granted granted Critical
Publication of US3006172A publication Critical patent/US3006172A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D04B15/06—Sinkers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars

Definitions

  • This invention relates to sinkers for flat warp knitting machines.
  • Such machines have a row of reciprocating needles with hooks, one or more rows of warp thread guide eyes which are swung to and fro across the row of needles, and which make lapping and shogging movements along the row of needles, as well as a row of sinkers which are situated one between each adjacent pair of needles in the row.
  • Each sinker has a neb and all the sinkers are moved to and fro together so that the nebs are moved into and out of engagement between the needles once during each knitting cycle.
  • a sinker for a flat warp knitting machine has a neb, the projecting portion of which beyond the throat is divided into two parts, the parts being face to face and diverging from each other in a direction towards their tips.
  • each neb may be fiat and lie in the plane of the remainder of the sinker and the other part may be inclined to this plane, but alternatively and preferably, the two parts of the sinker diverge at equal angles from a central plane containing the remainder of the sinker.
  • each neb When the sinkers are mounted in position in a knitting machine and have their nebs in engagement between the needles the diverging parts of the nebs extend across the backs of the shanks of the needles; that is across the needles on the closed sides of the needle hooks.
  • the two parts of each neb preferably diverge from each other a distance equal to the distance between adjacent sinkers so that one part of the neb of one sinker touches the other part of the neb of the adjacent sinker in a plane passing through the centre line of the intervening needle and lying at right angles to the row of needles.
  • the diverging parts of the nebs must be resilient so that they can be sprung apart as the needles pass between them when the nebs are withdrawn from between the needles.
  • the sinkers can most easily be made from two resilient plates fixed together face to face. Both plates have projections on one edge, the projections together forming the nebs and the tips of the projections being bent away from each other. As is usual, the sinkers are preferably fixed together face to face with spaces between them to a sinker bar. The sinker bar, together with the sinkers, form a complete sinker assembly ready for mounting in a machine.
  • FIGURE 1 is a side elevation of a single sinker
  • FIGURE 2 is a perspective view of a sinker assembly comprising a number of sinkers fixed together face to face and showing also the associated needles and guides of a flat warp knitting machine;
  • FIGURE 3 is a diagrammatic perspective view to a larger scale, illustrating the operation of a sinker in accordance with the invention.
  • Each sinker consists of a pair of flat plates 1 and 2 having on their upper edges projections 3 and 4 together forming a neb.
  • the tips 5 and 6 of the projections 3 and 4 respectively beyond the throat 7 of the sinker diverge from each other as shown most clearly in FIGURES 2 and 3 of the drawings.
  • a row of sinkers are fixed together side by side by having their rearmost ends 8 cast into a light metal block 9.
  • the plates 1 and 2 are formed with a number of holes 10 to 13.
  • the metal of the block 9 penetrates into the holes it) and 11 and so anchors the plates 1 and 2 firmly in position in the block 9.
  • the holes 12 are merely to enable the plates to be held whilst the block 9 is cast, and a rod 14 shown in FIGURE 3 and indicated in chain-dotted lines in FIG- URE 2, passes through the holes 13 to maintain the spacing of the front ends 15 of the sinkers.
  • the blocks 9 are bolted side by side to a sinker bar as described in my co-pending application mentioned above.
  • Each sinker consisting of a pair of plates 1 and 2 is mounted between adjacent needles 16 in a flat warp knitting machine.
  • the needles 16 are quite conventional and have hooks 17 and-tongues 18 which reciprocate within tubular shanks of the needles 16 to open and close the hooks 17 in the manner described in my co-pending application already mentioned.
  • the machine also has one or more rows of guide eyes, one of which is shown at 19.
  • the needles 16 When the machine is in operation the needles 16 are reciprocated upwards and downwards in the direction of the arrows 20.
  • the guide eyes 19 are swung to and fro in the direction of the arrows 21 and they also make movements to and fro in a direction along the row of needles 16 as indicated by the arrow 22.
  • the sinkers reciprocate in the direction of the arrows 23. Warp threads leading from a single warp beam pass one through each of the openings 24 in the guide eyes 19.
  • FIGURE 3 of the drawings The operation of the machine when it is knitting an openwork fabric having some stitches forming open loop pillars is illustrated in FIGURE 3 of the drawings.
  • successive stitch loops 26, 27 and 28 are knitted on the same needle with the one warp thread 25.
  • the gmide eye 19 makes shogging and lapping movements under the control of a pattern mechanism to and fro in a direction along the row of needles, but moves backwards and forwards across the throat of only one needle.
  • FIGURE 3 of the drawings This figure is diagrammatic and shows a single sinker with its double neb in a fixed position.
  • the hooked needle on which the stitch loops are being formed is shown in six difierent positions illustrating six successive stages in the knitting cycle.
  • the needle reciprocates straight upwards and downwards and the sinker also reciprocates horizontally.
  • a movement equal in magnitude, but opposite in direction, to that performed by the sinker has been superimposed on the needle so that it appears that the needle moves both upwards and to the right.
  • the guide eye 1% is also shown in six successive positions which it occupies relative to the needle. The positions of the needle and guide eye in the six successive stages are shown at. A to F.
  • both the guide eye 19 and the hook 17 of the needle are in their positions marked A.
  • the warp thread 25 passes through the opening 24, through the loop 27 knitted in the previous knitting cycle on the needle 16, thence through the hook 17 and back to the already knitted fabric.
  • the hook 17 is completely closed by the tongue 18.
  • the hook 17 has started torise, the tongue 18 has started to open the hook 17 and the sinker consisting of the plates 1 and 2 has moved a little to the left. This brings about the relative movement shown in FIGURE 3 of the drawings of the needle to the right.
  • the guide 19 has also swung to the right. The movement of the hook 17, the guide eye 19 and the sinker plates 1 and 2 continues to stage C.
  • the thread 25 passes downwards to the loop 27 which has been pulled over to the right, and in so doing, passes to the right of the left-hand extremity 29 of the tip 5 of the projection on the plate 1 forming part of the neb.
  • the thread 25 passes behind the tip 5 and then under the tip 5 back into a position in front of the plate 1.
  • the hook 17 is fully open because the tongue 18 is completely retracted into the tubular shank of the needle 16 and the needle rises a substantial amount relatively to the guide eye 19 and the sinker formed by the plates 1 and 2.
  • the loop 28 which previously lay in the hook 17 is held down around the shank of the needle 16.
  • sinkers in accordance with the present invention are especially advantageous when knitting pillar stitches on single needles because they enable the knitted loops to be held down by the wales formed under the divided parts of the sinker nebs, but they are also advantageous when knitting any other types of stitch in which shogging motions of the guides take place between successive stitches which are formed on different needles. This is because, as already explained, the thread helices formed around the needle shanks lie nearer to the needle hooks than they would in a machine provided with conventional sinkers.
  • the new loop of the thread 25 which is laid in the hook 17 at stage P of the knitting cycle of course passes between the tips 5 and 6 at the same time as does the hook 17.
  • the previously knitted loop 28 is cast off over the hook 17 and the needle then returns to the position shown at A and the knitting cycle is repeated.
  • the diiference between this cycle and that of a machine with a conventional sinker having a single neb is that with a single neb, as the needle moves upwards between positions A and C, the thread, instead of passing behind the tip 5, will pass in front of the tip because the tip will lie in the same plane as the plates 1 and 2; that is on the same side of the tip as the needle itself.
  • a sinker assembly comprising a plurality of elongated sinker means arranged in a row with at least one sinker means located between each adjacent pair of shanks, said at least one sinker means comprising two resilient neb portions which project longitudinally and downwardly from said sinker means and terminate in diverging tips, each of which tips extends away from the other towards a neb portion of the adjacent sinker means on the opposite side of a needle, and means for reciprocating said sinker means in a direction transverse to said shanks, whereby during a knitting operation a thread passing through the hook of one of said needles and moving towards the tips of said neb portions is caused to pass under one of said sinker assembly
  • a fiat warp knitting machine wherein said tips of said neb portions are in contact with the tips of the neb portions of the said adjacent sinker means.
  • the at least one sinker means between each pair of needles comprises a pair of plates arranged face to face, each plate having a body portion with an edge and a hook-shaped neb portion extending from said edge of said body portion, said edge and said neb defining between them a throat and said neb portions being outwardly bent away from each other and tips of said neb portions being in contact with the tips of the neb portions of the adjacent sinker means in said assembly lying on the opposite side of a needle.
  • a sinker assembly for a flat warp knitting machine comprising a plurality of sinker means arranged side by side in a row and means rigidly fixing said sinker means together, each of said sinker means comprising a pair of plates arranged face to face and each plate having a body portion with an edge and a hook-shaped neb portion extending from said edge of said body portion, said edge and said neb defining between them a throat and said neb portions being outwardly bent away from each other and tips of said neb portions being in contact with the tips of the neb portions of adjacent sinker means in said assembly.
  • sinker means for a fiat warp knitting machine, said sinker means comprising supporting means carrying a body portion consisting of at least one elongated member and two resilient neb portions projecting longitudinally from said body portion, each neb portion having a tip and a throat defined between said neb portion and said body portion, and said neb portions diverging from each other as their tips are approached.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US18038A 1959-04-16 1960-03-28 Flat warp knitting machines Expired - Lifetime US3006172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12998/59A GB889739A (en) 1959-04-16 1959-04-16 Improvements relating to flat warp knitting machines

Publications (1)

Publication Number Publication Date
US3006172A true US3006172A (en) 1961-10-31

Family

ID=10014963

Family Applications (1)

Application Number Title Priority Date Filing Date
US18038A Expired - Lifetime US3006172A (en) 1959-04-16 1960-03-28 Flat warp knitting machines

Country Status (5)

Country Link
US (1) US3006172A (fr)
CH (1) CH364863A (fr)
DE (1) DE1207541B (fr)
FR (1) FR1257284A (fr)
GB (1) GB889739A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320773A (en) * 1963-12-27 1967-05-23 Cotton Ltd W Straight bar knitting machines
US3323332A (en) * 1963-12-27 1967-06-06 Cotton Ltd W Straight bar knitting machines
US4322956A (en) * 1980-03-04 1982-04-06 Liba Maschinenfabrik Gmbh Warp knitting machine arrangement
US4674302A (en) * 1981-06-08 1987-06-23 Milliken Research Corporation Warp knitting machine
US4698986A (en) * 1981-06-08 1987-10-13 Milliken Research Corporation Warp knitting machine
WO2021086250A1 (fr) * 2019-10-29 2021-05-06 Iro Aktiebolag Module d'outil de touffetage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1930819A (en) * 1929-10-04 1933-10-17 United Shoe Machinery Corp Knitting machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB797817A (en) * 1955-08-24 1958-07-09 F N F Machinery Mfg Company Lt Improvements relating to warp knitting machinery

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1930819A (en) * 1929-10-04 1933-10-17 United Shoe Machinery Corp Knitting machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320773A (en) * 1963-12-27 1967-05-23 Cotton Ltd W Straight bar knitting machines
US3323332A (en) * 1963-12-27 1967-06-06 Cotton Ltd W Straight bar knitting machines
US4322956A (en) * 1980-03-04 1982-04-06 Liba Maschinenfabrik Gmbh Warp knitting machine arrangement
US4674302A (en) * 1981-06-08 1987-06-23 Milliken Research Corporation Warp knitting machine
US4698986A (en) * 1981-06-08 1987-10-13 Milliken Research Corporation Warp knitting machine
WO2021086250A1 (fr) * 2019-10-29 2021-05-06 Iro Aktiebolag Module d'outil de touffetage
CN114729486A (zh) * 2019-10-29 2022-07-08 范德威尔瑞典公司 簇绒工具模块
CN114729486B (zh) * 2019-10-29 2023-06-30 范德威尔瑞典公司 簇绒工具模块
US11840787B2 (en) 2019-10-29 2023-12-12 Vandewiele Sweden Ab Tufting tool module

Also Published As

Publication number Publication date
DE1207541B (de) 1965-12-23
CH364863A (fr) 1962-10-15
FR1257284A (fr) 1961-03-31
GB889739A (en) 1962-02-21

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