US3699783A - Apparatus for feeding filling threads to a warp knitting machine - Google Patents

Apparatus for feeding filling threads to a warp knitting machine Download PDF

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Publication number
US3699783A
US3699783A US867524A US3699783DA US3699783A US 3699783 A US3699783 A US 3699783A US 867524 A US867524 A US 867524A US 3699783D A US3699783D A US 3699783DA US 3699783 A US3699783 A US 3699783A
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United States
Prior art keywords
chain
yarn
arm
turntable
weft
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Expired - Lifetime
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US867524A
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English (en)
Inventor
Alexander J Carman
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JP Stevens and Co Inc
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JP Stevens and Co Inc
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Assigned to BANKERS TRUST COMPANY, A NY BANKING CORP. reassignment BANKERS TRUST COMPANY, A NY BANKING CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: J.P. STEVENS & CO.
Assigned to J.P. STEVENS & CO., INC. reassignment J.P. STEVENS & CO., INC. RELEASE SECURITY INTEREST & ASSIGNMENT. Assignors: BANKERS TRUST COMPANY
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D04B23/12—Flat warp knitting machines with provision for incorporating unlooped wefts extending from selvedge to selvedge

Definitions

  • ABSTRACT A feed mechanism for feeding lengths of weft thread on chains to a weft inserted warp knitting machine in which threads from packages rotating on a turntable pass through arms for each package and are transferred to an auxiliary chain provided with clamping thread transfer pins which carry one end of each of the threads across the knitting machine to the far weft carrier chain while the rotating arms carry the other ends to the near feeding chain.
  • the weft thread thus strung across from chain to chain is clamped on the chain, and at the near feeding chain the thread is cut.
  • Feed of filling thread or insert yarn presented a substantial problem.
  • One very desirable solution was to provide parallel carrier chains, usually moving continuously, to the two ends of the knitting line with cam operated, thread clamping and releasing pins, the thread being cut after clamping.
  • certain problems arose.
  • the enormous speed of the machine which can utilize filling thread lengths in the miles per hour, presented serious problems when the carrier chains were fed with a single thread from a single package. It was, of course, possible to change thread packages or cones by a conventional transfer mechanism which operates analogously to a transfer for connecting new supplies to shuttles in looms.
  • the present invention deals with a variant of the chain feed of filling threads.
  • the actual chain feed is not significantly changed and the same effective mechanism used in the Carman patent may be employed.
  • the present invention uses multiple thread cones or packages and so shares with the Carman carousel the important advantage of permitting fabric pattern variation by different colored or textured filling threads. Likewise, the present invention permits considerably slower thread speed in laying the threads between the feed chains, which was an additional important advantage of the Carman feed. That these important advantages of the Carman carousel are retained, together with certain other advantageous features, represents a desirable operating design. It is not necessary to compromise in order to obtain desirable new features, as is so often the case in improved mechanical designs.
  • the present invention uses moving packages, as does the Carman carousel, but instead of a large number of packages having to move along very considerable lengths of feed chain, and therefore at high speeds, a plurality of packages revolves on a relatively small and so very stiff and rugged turntable.
  • each package Above each package is an arm extending out with suitable thread eye and, if desired, tensioning means. These arms rotate with the turntable.
  • Adjacent to the turntable is an auxiliary chain with thread clamping pins or cups of the same design as those on the two chains that carry the successive insert threads or yarns to the knitting line. This chain is in the same plane as the arms of the packages but extends less than the full width of the knitting machine by the length of the arm.
  • the pin on the auxiliary chain which has been opened by a cam engages the yarn and is carried by the auxiliary chain to the opposite carrier chain, where the thread is caught on the pin of the carrier chain in the normal manner and released.
  • the arm above the particular package turns in the opposite direction and finally comes adjacent to the second or near carrier chain, where it pulls the thread across an opened pin, which then clamps down, and the usual cutter cuts off the end so that when this arm comes around again the cycle is repeated.
  • the two feed chains are moving and, therefore, the auxiliary chain has to be arranged with a diagonal path and the movement of the end of each arm above the packages on the turntable also results in movements in two dimensions.
  • Drives are, of course, synchronized with knitting machine drive as they are in a carousel, and so arm and diagonal chain bring the thread to the two proper pins on the carrier chains.
  • the carrier chains are or can be of equal length, whereas in the carousel normally one chain is longer than the other since its pins receive one end of the thread coming off a package or cone on the carousel and these pins move up so that they are at the same point as the pin receiving the other end of the thread from the package.
  • the turntable carrying the packages is in the clear, and so when packages have to be replaced it is a little more convenient than on the long endless chain of the carousel.
  • FIG. 1 which shows in plan view yarn feeding onto an intermediate auxiliary conveyor chain, also shows, in effect, an elevation of the knitting machine insert yarn carrier chains since these latter slant up at an angle.
  • the knitting machine frame is shown at I with continuously moving carrier chains 2R and 2L.
  • This figure illustrates operation of the pins where the chain is flat. They are formed of a bottom piece 4 with a top beveled clamping piece 5 on a rod 8 passing through a hole in the bottom piece.
  • the pins are held in closed position by the springs 6 which bear against knobs 7.
  • the bottom pieces 4 are attached to the chain by brackets 9.
  • the chains 2R and 2L are shown purely diagrammatically without the cams on the sprockets where the chains turn at the bottom and at the top to insert the yarns into the knitting line.
  • the cams on the sprocket are, of course, the ones which bear on the knobs 7 of the pins and operate to open the pins and to clamp down on the yarns.
  • the bottom pin on the left hand chain is in its opened position ready to transfer an insert yarn, as will be described below.
  • Insert yarn is carried on packages 10 which are mounted on a turntable 11. Above the packages are arms 12 with tension disks 13 at the ends and guide eyes 14, which can be seen in FIG. 2. The arms are mounted on a central column 15 which turns with the turntable.
  • Transfer to the insert yarn chains 2L and 2R is by an intermediate conveyor chain 16 with a drive sprocket l7 and idler sprockets 18.
  • the chain carries pins or clips 19 of the same conventional design as is shown in FIG. 3 and as are used on the insert yarn carrying chains.
  • FIG. 2 is an elevation taken at a time when one of the arms 12 with its tension disk 13 is at a transfer point. It is above and adjacent to one of the pins 19 on the intermediate conveyor chain 16. At this point the pin 19, shown in FIG. 2, has been opened by the cam 22 on the framework 23. Camrning action is similar to that described in FIG. 3 and so is shown merely diagrammatically in FIG. 2. The pin 19 receives yarn out just to the right of the tension disk 13 and then drops off the cam and clamps tight on the yarn thus pulling the end of the yarn off the tension disc. Thereafter as the chain 16 moves, the pin pulls this yarn through the eye 14. In the meantime, the arm 12 is moving in the opposite direction toward the right hand carrier chain 2R.
  • FIG. 2 shows the situation just after the pin has closed.
  • the thread is pulled out and re-engages the tension disc 13, as is shown in FIG. 1, and finally, when the pin has reached a position below the bottom end of chain 2L, the arm will have reached a position adjacent to the pin at the bottom of chain 2R.
  • These pins are opened by the conventional cams carried by the sprocket mechanisms, (not shown), and the yarn is transferred to the chains, the pin 19 at the second transfer point being opened by a cam 24.
  • the yarns are then cut by a conventional cutter, which is shown diagrammatically at 25 on the right hand side.
  • the chains 2R and 2L are, of course, moving in the customary manner, and when they reach the knitting line in the machine the yarn is inserted against the warp yarns and leaves the opened pins at this point.
  • This operation is substantially the same as with a Carman carousel, illustrated in FIG. 5 of the Carman patent which has been referred to above; and as the present invention does not change the operation of the mechanism, this portion of the machine is not illustrated.
  • the turntable 1 1 is rigid, no special guide tracks and rollers are required as in the case of a Carman carousel and, as has been described above, the elimination of these elements constitutes a distinctive feature of the variant of the present invention illustrated in FIGS. 1 and 2. Although these guide elements are eliminated, their function is not, because the insert yarn is transferred to the insert yarn carrying chains. In other words, so far as the knitting machine itself is concerned, the function of the carousel is performed, albeit by the somewhat simplified mechanism described.
  • an intermediate carrier chain provided with yarn clips, said clips clamping by spring pressure, and means for opening said clip, the intermediate carrier chain extending from a point adjacent an arm of the turntable to an opposite insert weft carrying chain, means for driving said intermediate chain at a higher speed than the peripheral speed of the ends of each rotating arm above each package,
  • cam actuated means at the point of adjacency to d. means for cutting the end of the yarn from the turntable arm after it is clamped by the pin on the other weft carrier chain.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US867524A 1969-10-20 1969-10-20 Apparatus for feeding filling threads to a warp knitting machine Expired - Lifetime US3699783A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86752469A 1969-10-20 1969-10-20

Publications (1)

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US3699783A true US3699783A (en) 1972-10-24

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Application Number Title Priority Date Filing Date
US867524A Expired - Lifetime US3699783A (en) 1969-10-20 1969-10-20 Apparatus for feeding filling threads to a warp knitting machine

Country Status (9)

Country Link
US (1) US3699783A (fr)
AT (2) AT332516B (fr)
CA (1) CA919930A (fr)
CH (3) CH564624A5 (fr)
DE (3) DE2065911C3 (fr)
FR (1) FR2066155A5 (fr)
GB (2) GB1309620A (fr)
IL (1) IL35663A (fr)
NL (1) NL7015329A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785175A (en) * 1971-05-14 1974-01-15 Schlafhorst & Co W Apparatus for inserting weft thread bunches into weft thread storage devices in warp knitting machines
US3797278A (en) * 1972-12-04 1974-03-19 K Kohl Warp knitting machine
US4347718A (en) * 1979-10-03 1982-09-07 Hospal Medical Corporation Cutting elements for knitting machines
US4823564A (en) * 1987-09-02 1989-04-25 Liba Maschinenfabrik Gmbh Device for clamping weft threads in a warp knitting machine
CN104562419A (zh) * 2014-12-01 2015-04-29 常州市第八纺织机械有限公司 新型铺纬小车
WO2019174662A3 (fr) * 2018-03-14 2019-11-07 Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen Dispositif et procédé destinés à tisser en chaîne

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2951643C2 (de) * 1979-12-21 1983-03-03 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Schußfadenmagazin für Kettenwirkmaschinen
DE3040393C2 (de) * 1980-10-25 1985-05-02 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Schußfadenmagazin mit Umkehrschuß für eine Kettenwirkmaschine
DD217553B3 (de) * 1983-02-28 1992-12-24 Malimo Maschinenbau Gmbh Chemn Verfahren und vorrichtung zum herstellen einer textilbahn
DE3343048A1 (de) * 1983-11-28 1985-06-05 Liba Maschinenfabrik Gmbh, 8674 Naila Verfahren und vorrichtung zum legen von querschussfaeden fuer eine kettenwirkmaschine
DD248709A3 (de) * 1985-03-04 1987-08-19 Textima Veb K Verfahren und flache kettenwirkmaschine zum herstellen eines schusskettengewirkes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE235853C (fr) *
US1014916A (en) * 1907-07-11 1912-01-16 Charles B Tewksbury Machine for making tags.
US1015174A (en) * 1910-09-14 1912-01-16 Drahtpapier G M B H Machine for producing fabric, paper, or cardboard having an inclosure of crossing threads.
US2692635A (en) * 1952-11-21 1954-10-26 Nashua Corp Machine for paying out and delivering parallel lengths of thread
US3364701A (en) * 1966-02-25 1968-01-23 Stevens & Co Inc J P Apparatus for feeding filling threads to a warp knitting machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE235853C (fr) *
US1014916A (en) * 1907-07-11 1912-01-16 Charles B Tewksbury Machine for making tags.
US1015174A (en) * 1910-09-14 1912-01-16 Drahtpapier G M B H Machine for producing fabric, paper, or cardboard having an inclosure of crossing threads.
US2692635A (en) * 1952-11-21 1954-10-26 Nashua Corp Machine for paying out and delivering parallel lengths of thread
US3364701A (en) * 1966-02-25 1968-01-23 Stevens & Co Inc J P Apparatus for feeding filling threads to a warp knitting machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785175A (en) * 1971-05-14 1974-01-15 Schlafhorst & Co W Apparatus for inserting weft thread bunches into weft thread storage devices in warp knitting machines
US3797278A (en) * 1972-12-04 1974-03-19 K Kohl Warp knitting machine
US4347718A (en) * 1979-10-03 1982-09-07 Hospal Medical Corporation Cutting elements for knitting machines
US4823564A (en) * 1987-09-02 1989-04-25 Liba Maschinenfabrik Gmbh Device for clamping weft threads in a warp knitting machine
CN104562419A (zh) * 2014-12-01 2015-04-29 常州市第八纺织机械有限公司 新型铺纬小车
CN104562419B (zh) * 2014-12-01 2016-08-17 常州市第八纺织机械有限公司 新型铺纬小车
WO2019174662A3 (fr) * 2018-03-14 2019-11-07 Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen Dispositif et procédé destinés à tisser en chaîne

Also Published As

Publication number Publication date
DE2065911A1 (de) 1976-12-30
CA919930A (en) 1973-01-30
DE2065911C3 (de) 1979-11-15
ATA108274A (de) 1978-05-15
IL35663A (en) 1974-10-22
DE2051471C3 (de) 1979-02-08
CH564625A5 (fr) 1975-07-31
AT347557B (de) 1979-01-10
FR2066155A5 (fr) 1971-08-06
DE2051471A1 (de) 1971-04-29
DE2065911B2 (de) 1979-04-05
ATA945670A (de) 1976-01-15
CH564624A5 (fr) 1975-07-31
CH528623A (de) 1972-09-30
NL7015329A (fr) 1971-04-22
DE2051471B2 (de) 1978-06-22
AT332516B (de) 1976-10-11
DE2065910A1 (de) 1976-12-30
GB1300785A (en) 1972-12-20
IL35663A0 (en) 1971-04-28
GB1309620A (en) 1973-03-14

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BANKERS TRUST COMPANY, A NY BANKING CORP., NEW YO

Free format text: SECURITY INTEREST;ASSIGNOR:J.P. STEVENS & CO.;REEL/FRAME:005271/0777

Effective date: 19891020

AS Assignment

Owner name: J.P. STEVENS & CO., INC., GEORGIA

Free format text: RELEASE SECURITY INTEREST & ASSIGNMENT.;ASSIGNOR:BANKERS TRUST COMPANY;REEL/FRAME:007074/0390

Effective date: 19931210