US3710594A - Device for the selection of the needles or knitting accessories of circular knitting machines - Google Patents
Device for the selection of the needles or knitting accessories of circular knitting machines Download PDFInfo
- Publication number
- US3710594A US3710594A US00050396A US5039670A US3710594A US 3710594 A US3710594 A US 3710594A US 00050396 A US00050396 A US 00050396A US 5039670 A US5039670 A US 5039670A US 3710594 A US3710594 A US 3710594A
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- US
- United States
- Prior art keywords
- jacks
- operative position
- cam
- magnet
- needle
- 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
Links
- 238000009940 knitting Methods 0.000 title claims abstract description 17
- 210000002105 tongue Anatomy 0.000 claims abstract description 35
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
- D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
- D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
- D04B15/78—Electrical devices
Definitions
- the jacks are delivered, in an operative position with the tongues deformed, to a electro-magnet which selectively holds the jacks in operative position against elastic urging of the tongues, whilst the non-selected jacks are moved to an inoperative position by elastic urging of the tongues. Downstream of the magnet, the tongues of the selected jacks return to the undeformed state without moving the selected jacks from the operative position in which the actuating butts thereof cooperate with a raising cam to move associated needles to a working position.
- SHEET 7 0F 9 'NOR BE ttttttt ys PATENTEDJAH 16 ms SHEET 9 [IF 9 NORBERT BOURGEOIS Inventor DEVICE FOR THE SELECTION OF THE NEEDLES OR KNITTING ACCESSORIES OF CIRCULAR KNITTING MACHINES BACKGROUND OF THE INVENTION
- This invention relates to devices for the selection of the needles or knitting accessories of circular knitting machines.
- the invention more particularly concerns circular knitting machines provided with independantly movable needles and in which selection is effected by the action of magnetic means on oscillating elements associated with the needles or other accessories to be controlled.
- oscillating elements or needle jacks associated with the needles, and comprising an actuating butt are urged by a cam which pivots them so that their actuating butt comes within the range ofa raising cam.
- the butts of the needle jacks are placed within the reach of a raising cam by the permanent urging of individual springs located behind the needle jacks at the bottom oftheir guide grooves.
- independant is effected by means of other independant individual springs located outside the needle bed and which, when they are not held by a selectively excited electro-magnet, each have a free end protruding beyond the point of a switching and control cam which ensures that they are placed into contact with the corresponding needle jacks against the action of the individual urging springs, the respective butts being withdrawn in their grooves away from the raising cam.
- the actuating butts of the oscillating needle jacks are selectively brought, from their rest position, into a position in which they operatively cooperate with a raising .cam by theattraction of a selectively excited electro-magnet or by several electro-magnets selectively actuated in succession.
- the invention is particularly applicable to a circular knitting machine comprising a plurality of needles or knitting accessories relatively movable past at least one selecting station, wherein each needle or accessory is independantly slidable in a guide groove between a working position and a rest position and is associated with an element movable between an operative position and an inoperative position, and wherein each selecting station comprises magnetic selection means for controlling movement of the elements and means downstream of the selection means for causing the needles or accessories associated with elements in the operative position to adopt the working position whilst allowing the needles or accessories associated with elements in the inoperative position to adopt the rest position.
- each element comprises an elastically deformable part and means are provided for causing the elements to be delivered to the selection means in the operative position with the deformable parts deformed, the selection means being able to selectively hold the elements in the operative position against elastic urging of the deformed parts, and the non-selected elements being moved to the inoperative position by elastic urging of the deformed parts.
- the selected elements are slightly downstream of the selection means, their deformed parts are able to elastically return to the undeformed state without moving the selected elements from the operative position.
- the movable elements can be oscillable needle jacks each having an actuating butt to which the magnetic field of the selection means can be applied.
- FIG. 1 is a side view, partly in radial cross-section, of part of a circular knitting machine with a rotating needle bed having several selection stations and provided with oscillating needle jacks, one of which is shown in the selected or operative position in which it holds an associated needle in a raised working position.
- FIGS. 2 and 3 are views similar to FIG. 1, but in which the cross-section passes through the plane of a selection station of the device, an oscillating needle jack being shown held in a selected or operative position in FIG. 2 and freed in a rest or inoperative position in FIG. 3.
- FIG. 4 is a schematic plan view of a part of the same knitting machine.
- FIGS. 5 and 6 are views similar to FIG. 4 showing two modifications.
- FIG. 7 is a'view similar to FIG. 2 of a third modification.
- FIGS. 8 and 9 are views similar to FIG. 7 but in two different operating positions.
- FIG. 10 is a schematic view similar to FIG. 6 corresponding to the modification of FIGS. 7, 8 and 9.
- FIG. 11 is a schematic perspective view of a part of the knitting machine according to the modification of FIG. 7 through 10.
- a rotating cylinder 1 of the illustrated knitting machine is supported by a driving ring 2 and comprises at its periphery a series of grooves 3 parallel to the axis of the cylinder and in which independant needles 4 each provided with an actuating butt 5 can slide.
- Each butt can cooperate with the usual control cams 6 fixed on the cam-box 7 which is mounted on the principal stationnary plate 8 fixed to the frame of the machine.
- the needles 4 can be selectively slid in their grooves between a lowered rest position (FIGS. 2 and 3) and a raised working position (FIG. 1) by means of individual oscillable needle jacks 9 each comprising a projecting actuating butt 10.
- Each needle jack is able to pivot about an end 9' so that in an operative position the actuating butt 10 engages with a raising cam l 1, also fixed to the stationary cam-box 7, and in an inoperative position the butt 10 is removed from cam 11.
- each needle jack comprises a part 12 capable of being elastically deformed in relation to the main body of the jack.
- this part is in the form of an elastic tongue, which is manufactured integrally with the needle jack.
- a cam 14 fixed to the cambox 7 exerts a thrust on the elastically deformable tongues 12, which are thus deformed.
- the actuating butts 10 of the needle jacks thus move through the magnetic field of an electro-magnet 15 mounted on a support 16 fixed to the stationary cam-box.
- the needle jacks are made of a suitable magnetic material so that they are subjected to a magnetic attraction greater than the mechanical reaction provided by each tongue 12 and which tends to urge the needle jacks to the inoperative position.
- the electro-magnet is selectively excited by means of impulses delivered as a function of an operating program, not shown.
- the setting cam 13 ceases to exert its action on the lower end of the needle jacks as soon as the actuation butts are submitted to the selective attraction of the pole 17 of the electro-magnet 15(FlGS.2and 3).
- a magnet 21, constituting magnetic means for maintaining selection is
- Magnet 21 has substantially the same attractive force as electromagnet 15 and exerts a permanent influence solely on the butts of the needle jacks A selected by the electromagnet 15.
- the needle jacks B not selected by the electro-magnet 15 are returned to their inoperative position by the action of their elastic tongues 12 before they reach electro-magnet 21; the effect of the field of electro-magnet 21 on the non-selected needle jacks B is therefore negligible in view of the separation of the actuation butts thereof from magnet 21.
- the two magnets 15 and 21 are separated by a non-magnetic material 23 to avoid interference between the two respective magnetic fields.
- the needle jacks A selected by means of the electro-magnet 15 thus pass from the field of electro-magnet 15 to that of the adjacent magnet 21 without a risk of pivoting back into their inoperative position under the effect of unbending of their elastic tongues 12.
- Magnet 21 is preferably a permanently maintained electro-magnet. Whilst eleetro-magnet 21 exerts an influence on an actuation butt 10, the thrust cam 14 ceases action on the corresponding elastically deformable tongue 12, which returns to its undeformed position without causing displacement of the needle jack in question so that the actuation butt 10 remains in operative position on the raising cam 11.
- FIG. 6 enables improvement of the delivery of the needle jacks to the selection means.
- a setting cam 13a acts on the lower end of the needle jacks and puts their actuating butts 10 into the operative position as at C.
- These butts are thus submitted to the attractive magnetic field of a lead-in magnet 25 located upstream of selection electro-magnet 15a.
- Magnet 25 is located adjacent the selection electro-magnet 15a so that it bridges a gap between the downstream end 13b of the setting cam 13a and the attacking adge D of the selection magnet 15a.
- the excitation of the selection electro-magnet 15a is once more controlled by impulses as a function of a program, not shown.
- the electro-magnet 15a and the magnet 25 are both fixed to the stationary cam-box; the neighboring edges of the polar surfaces of these two magnets are separated by a non-magnetic material to avoid interference between the two magnetic fields. Consequently, a needle jack can pass from the magnet 25 to the selection electro-magnet 15a, when the latter is excited, without being pushed back to its inoperative position by action ofthe deformed tongue 12 submitted to the thrust of the cam 14.
- the magnetic field of the magnet 25 is sufficient to overcome the force supplied by each elastic part 12, deformed against the thrust cam 14, and holds the needle jacks in operative position.
- the relative disposition of the downstream end 13b of the setting cam 13a, the lead-in magnet 25, and the selection electro-magnet 15a is such that the setting cam 13a ceases to act on the lower part of the needle jacks 9 before the actuation butts 10 of these jacks are subjected to the action of the selection electro-magnet 150, the needle jacks being held in operative position by the magnet 25.
- Magnet 25 is preferably a permanently fed electromagnet and, during passing by of the needle jacks in front of a selecting station, all of the butts 10 are attracted and held by this permanent electro-magnet 25.
- a second permanently maintained magnet 21a, con stituting magnetic selection holding means, is mounted on the stationary cam-box downstream of the selection magnet 15a.
- Magnet 21a holds the butts 10 .of the needle jacks F selected by the magnet 15a in their operative position on the cam 11.
- the downstream edge of magnet 21a extends further downstream than the downstream edge G of the thrust cam 14 so that the tongues 12 return to their original undeformed state without causing pivoting of the selected needle jacks, as is seen for the needle jack indicated by H.
- this arrangement enables an increase in the rate of selection of the device with a maximum reliability and safety.
- the third variant shown in FIGS. 7, 8 and 9, aims to provide a maximal reduction of the required attractive power for the magnetic lead-in means. Consequently the power consumption of the electro-magnets can be reduced and the device can have a smaller bulk whilst ensuring the optimum operating conditions with a great reliability in delivery of the oscillating elements to the magnetic selecting means.
- the actuating butts 10 are thus submitted to the influence of magnetic lead-in means 25a fixed to the cam-box by means of a bracket 36 so that the butts of the needle jacks are held in their operative position when the setting cam 13c ceases its action.
- a cam 14a fixed to the cam-box, exerts a thrust on the tongues 12 as indicated by 9!).
- their actuating butts are then selectively subjected to the magnetic field of an electro-magnet 15a, the tongues 12 being in their deformed state.
- the butts of the selected needle jacks 92 remain in the operative position in which they are temporarily held by attraction of the holding magnet 210 during cessation of the action of the thrust cam 14a; the deformed tongues 12 can thus return to their initial undeformed state without causing the selected needle jacks to pivot.
- the selected needle jacks 9fhave passed by the holding magnet 21a they are moved to a raised position by the raising cam 11 so that they slide the as sociated needles up into the working position.
- the non-selected needle jacks 9g have their butts l0 removed from the raising cam 11 so that the corresponding needles remain in the lower rest position.
- the magnet 25a constituting the magnetic lead-in means, as well as the holding magnet 21a, can be permanent magnets, but are preferably permanently supplied electro-magnets.
- each oscillating needle jack also has a protruding part 3k on its rear edge.
- the parts 3k are housed in a recess 3m in the guide groove 3.
- This particular arrangement enables the needle jacks 9 in operative position to manouvre radially, for example under the elastic urging of the deformed elastic tongues 12, prior to raising the associated needles to the working position whilst enabling the needle jacks to be firmly held when the associated needles are raised, without having to rely upon a braking of the needle jacks, as is normally used but which does not allow the jacks the same freedom of manouvre.
- the needle jacks Whilst in known devices the needle jacks are moved into inoperative position by means of a cam, or magnetically or by means of separate springs, in the described device according to the invention the needle jacks are brought to the inoperative position by means of the elastic tongues integral with the needle jacks.
- each needle is independently slidable in a guide groove between a working position and a rest position and is associated with a needle jack movable between an operative position and'an inoperative position
- each selecting station comprises magnetic selection means for controlling movement of the jacks and means downstream of the selection means for causing the needles associated with jacks in the operative position to adopt the working position while allowing the needles associated with jacks in the inoperative position to adopt the rest position
- each needle jack comprises an elastically deformable tongue
- delivery means causing said jacks to be delivered to said selection means in the operative position with the deformable tongues deformed
- said delivery' means comprising a setting cam upstream of said selection means for moving said jacks into operative position and a bearing surface against which the deformable tongues of the jacks are deformed when moved into operative position by said setting cam, said selection means selectively holding
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6926944A FR2030542A2 (fr) | 1969-07-10 | 1969-08-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3710594A true US3710594A (en) | 1973-01-16 |
Family
ID=9038677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00050396A Expired - Lifetime US3710594A (en) | 1969-08-05 | 1970-06-29 | Device for the selection of the needles or knitting accessories of circular knitting machines |
Country Status (2)
Country | Link |
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US (1) | US3710594A (fr) |
FR (1) | FR2030542A2 (fr) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3771328A (en) * | 1972-01-03 | 1973-11-13 | A Schindele | Jack-controlling means for the needles of a circular knitting machine |
US3771327A (en) * | 1968-10-16 | 1973-11-13 | Terrot Soehne & Co C | Electromagnetically-operated pattern control mechanism for circular knitting machines |
US3812691A (en) * | 1969-10-07 | 1974-05-28 | Terrot Soehne & Co C | Jack and needle actuator for a circular knitting machine |
US3818726A (en) * | 1973-02-27 | 1974-06-25 | Stoll & Co H | Needle selecting mechanism for flat knitting machines |
US3851500A (en) * | 1971-04-19 | 1974-12-03 | Rockwell International Corp | Circular knitting machine needle selecting apparatus |
US3885404A (en) * | 1971-06-21 | 1975-05-27 | Elitex Zavody Textilniho | Apparatus for patterning knitting machines |
US3890805A (en) * | 1972-04-04 | 1975-06-24 | Bonneterie S A Et | Needle selection device for a circular knitting machine |
US3910070A (en) * | 1972-06-08 | 1975-10-07 | Elitex Zavody Textilniho | Apparatus for controlling the needle selectors in a circular knitting machine |
US3919863A (en) * | 1973-05-08 | 1975-11-18 | Precision Fukuhara Works Ltd | Electronic needle selecting means for circular knitting machines |
US3974664A (en) * | 1973-03-25 | 1976-08-17 | Erba Maschinenbau Ag | Method and device for electronic scanning of control-fields of a control member on cylinder and straight bar knitting machines |
US3977215A (en) * | 1975-07-11 | 1976-08-31 | Jumberca, S.A. | Needle selector mechanism for knitting machine |
US3987646A (en) * | 1972-01-10 | 1976-10-26 | Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi | Magnetic actuator construction for a circular knitting machine |
US4023383A (en) * | 1975-05-03 | 1977-05-17 | Mayer & Cie | Electrically controlled needle selector arrangement for knitting machines |
US4033148A (en) * | 1975-08-08 | 1977-07-05 | Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Of Czechoslovakia | Needle selecting device |
US4054042A (en) * | 1975-01-31 | 1977-10-18 | Battelle Memorial Institute | Apparatus for accelerating a knitting needle during its stitch drawing stroke |
US4196599A (en) * | 1978-03-04 | 1980-04-08 | Jumberca, S. A. | Needle selection mechanism for knitting machines |
US4738123A (en) * | 1982-07-14 | 1988-04-19 | Tibbals Jr Edward C | Circular weft knitting machine |
US4739636A (en) * | 1984-08-06 | 1988-04-26 | Cesare Colosio S.R.L. | Circular knitting machine |
US4799366A (en) * | 1987-08-04 | 1989-01-24 | Orizio Paolo S.P.A. | Knitting or hosiery machine with electronic-controlled, electromechanically actuated selection of the needles |
US5241288A (en) * | 1990-11-23 | 1993-08-31 | Savio S.P.A. | Electromagnetic selector equipped with a plurality of selection positions |
US5664442A (en) * | 1995-03-30 | 1997-09-09 | Matec S.R.L. | Elastic selector with associated sub-needle for needles in a circular knitting machine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH622566A5 (fr) * | 1978-06-05 | 1981-04-15 | Dubied & Cie Sa E | |
DE3523997A1 (de) * | 1985-07-04 | 1987-01-15 | Schieber Universal Maschf | Nadelauswahlvorrichtung an einer flachstrickmaschine |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1590295A (en) * | 1924-08-06 | 1926-06-29 | Wildman Mfg Co | Knitting machine and pattern mechanism |
GB466043A (en) * | 1935-11-23 | 1937-05-21 | Booton Ltd W | Improvements in and relating to knitting machines |
US3292393A (en) * | 1963-04-20 | 1966-12-20 | Morat Kg Franz | Pattern control arrangement for circular knitting machines |
US3365916A (en) * | 1965-03-02 | 1968-01-30 | Morat Kg Franz | Selector magnetic arrangement for knitting machines |
FR1559100A (fr) * | 1968-01-23 | 1969-03-07 | ||
US3449928A (en) * | 1965-03-06 | 1969-06-17 | Morat Gmbh Franz | Selector apparatus for circular knitting machines |
DE1803296A1 (de) * | 1968-10-16 | 1970-05-14 | Terrot Soehne Maschinenfabrik | Magnetisch beaufschlagte Nadel fuer Rundstrickmaschinen |
US3535892A (en) * | 1967-02-14 | 1970-10-27 | Morat Gmbh Franz | Knitting machine with slide latch needles controlled by jacks |
US3550398A (en) * | 1968-02-16 | 1970-12-29 | Wildt Mellor Bromley Ltd | Patterning mechanism for knitting machines |
US3605448A (en) * | 1968-05-14 | 1971-09-20 | Erich Ribler | Magnetic selector for textile machines |
-
1969
- 1969-08-05 FR FR6926944A patent/FR2030542A2/fr active Pending
-
1970
- 1970-06-29 US US00050396A patent/US3710594A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1590295A (en) * | 1924-08-06 | 1926-06-29 | Wildman Mfg Co | Knitting machine and pattern mechanism |
GB466043A (en) * | 1935-11-23 | 1937-05-21 | Booton Ltd W | Improvements in and relating to knitting machines |
US3292393A (en) * | 1963-04-20 | 1966-12-20 | Morat Kg Franz | Pattern control arrangement for circular knitting machines |
US3365916A (en) * | 1965-03-02 | 1968-01-30 | Morat Kg Franz | Selector magnetic arrangement for knitting machines |
US3449928A (en) * | 1965-03-06 | 1969-06-17 | Morat Gmbh Franz | Selector apparatus for circular knitting machines |
US3535892A (en) * | 1967-02-14 | 1970-10-27 | Morat Gmbh Franz | Knitting machine with slide latch needles controlled by jacks |
FR1559100A (fr) * | 1968-01-23 | 1969-03-07 | ||
US3550398A (en) * | 1968-02-16 | 1970-12-29 | Wildt Mellor Bromley Ltd | Patterning mechanism for knitting machines |
US3605448A (en) * | 1968-05-14 | 1971-09-20 | Erich Ribler | Magnetic selector for textile machines |
DE1803296A1 (de) * | 1968-10-16 | 1970-05-14 | Terrot Soehne Maschinenfabrik | Magnetisch beaufschlagte Nadel fuer Rundstrickmaschinen |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3771327A (en) * | 1968-10-16 | 1973-11-13 | Terrot Soehne & Co C | Electromagnetically-operated pattern control mechanism for circular knitting machines |
US3812691A (en) * | 1969-10-07 | 1974-05-28 | Terrot Soehne & Co C | Jack and needle actuator for a circular knitting machine |
US3851500A (en) * | 1971-04-19 | 1974-12-03 | Rockwell International Corp | Circular knitting machine needle selecting apparatus |
US3885404A (en) * | 1971-06-21 | 1975-05-27 | Elitex Zavody Textilniho | Apparatus for patterning knitting machines |
US3771328A (en) * | 1972-01-03 | 1973-11-13 | A Schindele | Jack-controlling means for the needles of a circular knitting machine |
US3987646A (en) * | 1972-01-10 | 1976-10-26 | Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi | Magnetic actuator construction for a circular knitting machine |
US3890805A (en) * | 1972-04-04 | 1975-06-24 | Bonneterie S A Et | Needle selection device for a circular knitting machine |
US3910070A (en) * | 1972-06-08 | 1975-10-07 | Elitex Zavody Textilniho | Apparatus for controlling the needle selectors in a circular knitting machine |
US3818726A (en) * | 1973-02-27 | 1974-06-25 | Stoll & Co H | Needle selecting mechanism for flat knitting machines |
US3974664A (en) * | 1973-03-25 | 1976-08-17 | Erba Maschinenbau Ag | Method and device for electronic scanning of control-fields of a control member on cylinder and straight bar knitting machines |
US3919863A (en) * | 1973-05-08 | 1975-11-18 | Precision Fukuhara Works Ltd | Electronic needle selecting means for circular knitting machines |
US4054042A (en) * | 1975-01-31 | 1977-10-18 | Battelle Memorial Institute | Apparatus for accelerating a knitting needle during its stitch drawing stroke |
US4023383A (en) * | 1975-05-03 | 1977-05-17 | Mayer & Cie | Electrically controlled needle selector arrangement for knitting machines |
US3977215A (en) * | 1975-07-11 | 1976-08-31 | Jumberca, S.A. | Needle selector mechanism for knitting machine |
US4033148A (en) * | 1975-08-08 | 1977-07-05 | Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Of Czechoslovakia | Needle selecting device |
US4196599A (en) * | 1978-03-04 | 1980-04-08 | Jumberca, S. A. | Needle selection mechanism for knitting machines |
US4738123A (en) * | 1982-07-14 | 1988-04-19 | Tibbals Jr Edward C | Circular weft knitting machine |
US4739636A (en) * | 1984-08-06 | 1988-04-26 | Cesare Colosio S.R.L. | Circular knitting machine |
US4799366A (en) * | 1987-08-04 | 1989-01-24 | Orizio Paolo S.P.A. | Knitting or hosiery machine with electronic-controlled, electromechanically actuated selection of the needles |
US5241288A (en) * | 1990-11-23 | 1993-08-31 | Savio S.P.A. | Electromagnetic selector equipped with a plurality of selection positions |
US5664442A (en) * | 1995-03-30 | 1997-09-09 | Matec S.R.L. | Elastic selector with associated sub-needle for needles in a circular knitting machine |
Also Published As
Publication number | Publication date |
---|---|
FR2030542A2 (fr) | 1970-11-13 |
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