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US3851500A - Circular knitting machine needle selecting apparatus - Google Patents

Circular knitting machine needle selecting apparatus Download PDF

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Publication number
US3851500A
US3851500A US00135319A US13531971A US3851500A US 3851500 A US3851500 A US 3851500A US 00135319 A US00135319 A US 00135319A US 13531971 A US13531971 A US 13531971A US 3851500 A US3851500 A US 3851500A
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United States
Prior art keywords
jacks
jack
electromagnets
magnetic
magnet
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
US00135319A
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English (en)
Inventor
R Wolfshagen
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.)
Boeing North American Inc
Original Assignee
Rockwell International Corp
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 Rockwell International Corp filed Critical Rockwell International Corp
Priority to US00135319A priority Critical patent/US3851500A/en
Priority to ZA721490A priority patent/ZA721490B/xx
Priority to IT49104/72A priority patent/IT957577B/it
Priority to NL7204087A priority patent/NL7204087A/xx
Priority to FR727211879A priority patent/FR2133604B1/fr
Priority to AR241340A priority patent/AR195483A1/es
Priority to DE19722217115 priority patent/DE2217115A1/de
Priority to CH551172A priority patent/CH534758A/de
Priority to BE782283A priority patent/BE782283A/xx
Priority to BR2311/72A priority patent/BR7202311D0/pt
Priority to ES401920A priority patent/ES401920A1/es
Application granted granted Critical
Publication of US3851500A publication Critical patent/US3851500A/en
Anticipated expiration legal-status Critical
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
    • D04B15/66—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 actuating or selecting mechanism generally comprises a first or lower magnet means that includes a pair of poles, one of which is shaped in such a fashion as to provide a' cam surface against which one end (in this case, the lower end) of the, jacks will be cammed into a preselected position.
  • This preselected position is one in which the other ends of the jacks, here the upper ends, are moved into a select position where they can be magnetically engaged by a second or der.
  • the present invention is concerned with circular knitting machines generally known as the large diameter body type, but is not limited to that type of knitting machine solely.
  • Circular knitting machines basically comprise a cylindrical needle cylinder which is mounted for rotation about a vertical axis.
  • the outer periphery of the needle cylinder is formed with a large number of slots of generally rectangular cross-sectional configuration, commonly referred to as tricks, extending longitudinally generally parallel to the cylinder axis.
  • tricks Within these slots or tricks are disposed a plurality of knitting needles and usually one or more sets of needle jacks to accomplish their various knitting functions.
  • then eedles or needle jacks if they are to be the functioning means by which needles are caused to knit or not to knit, is controlled through appropriately located cams that at various times are in contact either with the needles or, in the present description, with the needle jacks.
  • the raise cams i.e. those that cause the needles to move vertically upwardly into the knit position are normally located just adjacent the outer periphery of the needle cylinder so that buttsor other protrusions on the needle jacks can cooperate therewith.
  • the mechanical transducers in turn cooperate with butts extending out from the lower ends of the patterning jacks.
  • the fact that mechanical linkage must exist between the element to be operated upon and the operating driver results in comparatively poor time response which in turn necessitates slower operating speeds and decreased production rates.
  • the actuating mechanism of the present invention goes beyond those existing in the prior artby virtue of providing for the first time a system utilizing both permanent magnetic fields and electromagnetically generated fields to assure not only extremely quick response time but also to produce surety in operation. It should be mentioned at this point that it would be possible to operate the present actuating mechanism solely through the use of electromagnets but no constructive purpose would be gained since permanent magnets can easily replace the function of certain of the electromagnets and thereby eliminate field controlling devices that would otherwise be necessary. Additionally, the present apparatus, because of its high rate of response can be effectively controlled by electronically programmed apparatus to switch from one desired pattern to another with no down time for the alteration of patterning cams.
  • Another object of this invention is to provide an improved jack actuator for knitting machines, which'actuator includesm'eans for positioning the jacks in a normally operative condition unless acted upon by a different part of the actuator.
  • Another object of thisinvention is to providean im proved jack actuator for use on a rotary knitting machine, which actuator includes means forsubjecting the jacks to atranslating magnetic field such that any selected jack can be subjected to the field independently of any adjacent or adjoining jack.
  • An additional object of this invention is to provide an improved jack actuator for use with rotary knitting machines which includes means for positioning the jacks in a select position from which they can unerringly be caused to move to positions resulting in knitting or nonknitting, as desired.
  • a further object of this invention is to provide an improved jack actuator for use with rotary knitting machines which includes upper and lower magnet means for controllably effecting positioning and corresponding ends of the jacks.
  • FIG. 3 is a front elevation of a cam box illustrating the manner in which the jack actuator is located with respect tothe jack raising cams;
  • FIG. 4 is a front elevation of the improved jack actuator of this invention.
  • FIG. 5 is a side elevation of the improved jack actuator of this invention.
  • FIG. 6 is a top plan view of the improved jack actuator with parts removed to show the manner in which the magnets of the upper part of the actuator are disposed;
  • FIG. 7 is a bottom view of a fragmentary portion of the structure of FIG. 3 illustrating the manner in which the lower portion of the jack actuator effects positioning of the jacks.
  • FIG. 8 is a top elevation of the lower portion of the magnetic static force assembly showing the two lower magnetic poles.
  • the actuator apparatus of this invention is to be used in conjunction with rotary knitting machines and preferably with large diameter machines having a multiplicity of yarn feeds, for example, 48 or more. Applicability of the principles and structures herein described are, however, relevant also to the small diameter knitting machines of the type now widely used to produce hosiery. It further must be understood, as mentioned earlier, that the method of selection here described might apply as well to a linear system where discrete bodies are caused to travel past a site of selection. The invention will be described specifically in conjunction with a particular type of apparatus, viz., a knitting machine, but it will be appreciated that its use can well extend into other areas of technology and engineering.
  • FIG. 1 of the drawings the actuator apparatus 10 is shown mounted adjacent the external wall of the needle cylinder 11 for cooperation therewith.
  • apattern jack 12 which is of the rocking type having a fulcrum located approximately midway between its upper and lower ends.
  • intermediate jack [3 and finally the actual needle 14 which performs the kntting operation is positioned immediately above intermediate jack 13.
  • Pattern jack 12, intermediate jack l3 and the knitting needle 14 are all mounted within a slot or trick present in the outer periphery of needle cylinder 11.
  • the entire outer periphery of the cylinder is slotted to provide a series of the tricks which extend substantially parallel to the axis of rotation of the knitting cylinder (not shown).
  • the actuator apparatus 10 is mounted on the machine base that also carries the needle cylinder 1 1. Also shown in FIG. 1, immediately beneath the actuator apparatus and secured to the machine base is a jackraising cam 15 that is also shown in FIGS. 2 and 3 of the drawings. These jack-raising cams are mounted on the machine in segments referred to as cam boxes and are disposed completely around the needle drum circumferentially, so that all jacks 12 during each full cylinder rotation may be acted upon by the raising cam 15 if this is desired.
  • FIG. 1 also shows, adjacent to the needle 14 and secured to machine structure, a needle cam 17. These needle cams are disposed completely around the needle cylinder circumferentially, so that the parts of all raised needles 14 are acted upon by the needle cam to lower them after they take yarn to form a stitch, and to cause them to perform stitch formation action.
  • the apparatus itself is made up of two principal operating subassemblies.
  • One of these comprises a magnetic static force asembly means 20 which is located adjacent the lower end of the actuator apparatus and which includes permanent magnet means 28 with upper pole 30 and lower poles that exert a magnetic force against the lower ends of the pattern jacks 12 as they travel past these magnetic elements.
  • the upper part of the actuator apparatus 10 has been designated as a magnetic force translation assembly means and is indicated by the numeral 21.
  • the magnetic force translation asssembly means includes a plurality of electromagnets 22 each of which is less than the spacing between the leading edges of two adjacent jacks'in width at its pole extreme and arranged in two levels at predetermined intervals to successively overlap each other at the pole extremities. This arrangement enables a very narrow and yet continuously effective sequential magnetic field to be applied to the open end of any pattern jack [2, as it progresses past the actuator apparatus, without adversely effecting its immediate neighboring jacks, and without reliance on friction or other mechanical means to overcome the at- I traction of the static magnetic force assembly means 20.
  • the magnetic force translation assembly2l also includes a jack indexing magnet 23 (FIG. 4) which are in this case shown to be permanent magnets but which may, alternatively, also be in the event it should be desired.
  • the function of this magnet is to so effect the position of the pattern jacks that they are in'readiness to be acted upon by the electromagnets 22 when desired.
  • jack latching magnet 24 which will maintain magnetic engagement with any jacks that have been acted upon by the electromagnets and hold them in the selected or nonknitting position for the required length of time to ensure that the lower end of the pattern jack will avoid any contact with one of the raising cams 15.
  • FIG. 6 The exact layout of the permanent jack indexing magnet 23 selecting electromagnets 22 and jack latching magnet 24 is shown clearly in FIG. 6 where the uppermost pole of each of the magnets is shown, the electromagnets 22 having coils 25 mounted on the closed ends thereof. These coils are, of course, connected by means of wires 26 to suitable sources of regulated voltage.
  • these magnets 22 are energized in sequence starting with the first uppermost magnet 22 immediately adjacent the jack indexing magnet 23. After level, has been energized after this second electromagnet 22 has been energized temporarily it is deenergized a predetermined time after the third of the e lectromagnet 22, which is located on the upper level, has been energized.
  • This third electromagnet 22 is deenergized at a predetermined time after the selected jack has progressed to a location where the jack latching magnet 24 can maintain the magnetic engagement of the jack with upper magnet'means 21.
  • this structure is made up of a first and second pole, the first pole being designated by the numeral 30 and the second and lower pole indicated by the numeral 31.
  • the first pole 30 performs no function other than that of providing a magnetic attraction helping to hold the lower end of pattern jacks 12 coming into contact with the magnetic static force assembly.
  • I has a cam surface 32 which is configured to cause the lower end of the jacks to move inwardly toward the needle cylinder and a cam surface 37"which is configured to permit the lower end of the jacks to move outwardly from the needle cylinder if this is desired.
  • This first cam surface 32 results in the upper ends of every one of the jacks 12 moving to a position of close proximity with upper magnet means 21 where they can be pulled against cam surface 29 by the attraction of jack indexing magnet 23 and subsequently selected to notknit, if this is desired, through interaction with magnetic fieldsoriginated with electromagnets 22 and subsequently following jack latching magnet 24.
  • the second cam surface 37 of .pole 31 permits the lower endsof the jacks not selected by upper magnet means 21 and through interaction with the static magnet field of lower magnet means 20, to be displaced outwardly along the cam surface 37 to a position where the notched lower section of the .jacks 12 will engage and be acted upon by the raising-cam 15.
  • This can be'stv be seen in FIG. 1 where the lower end of the jack 12 is shown in the displaced position it assumes when it is not returned against surface 29 of guard cam 27 by en- .ergization of electromagnets 27.
  • the notched lower end of the jack 12 will contact andsubsequently follow the contour of raising cam 15, which will raise the intermediate jack 13 and the knitting needle 14 finally into position to take yarn for knitting.
  • the lower pole 31 of the magnetic static force assembly is constructed in such a way that'the bottoms of pattern jacks 12 make contact with cam surface 32, depending upon whether or not they have been previously in a knit (raised) or a non-knit (lowered) position.
  • Those jacks that have been in the lowered or non-knit position are designated by numeral 33 and first contact surface 32 about midway of the lower pole 31.
  • Those jacks that have been in the raised or knit position are indicated by numeral 34 and contact surface 32 of pole 31 at an earlier point.
  • these jacks 34 are additionally in the process of being lowered by contact with'intermediate jacks 13 which have butts cooperating with lowering cam 16.
  • This embodiment is preferred to permit. a closer spacing of the jack actuator apparatus 10 circumferentially about the periphery of the needle cylinder as it is clear that the jack lowering action could be accomplished before jack contact with .cam surface 32.
  • the region-from the point of contact of jacks 34 with surface 32 to a location about midway of the lower pole 31 might be called the jack depressing section.
  • This language is functionally descriptive because as the jacks progress from the depressing section towardthe mid section, or jack indexing section, the lower ends of the jacks are depressed inwardly toward the needle cylinder 11 and into the respective tricks in the cylinder. In this orientation the stepped or notched-lower ends of all jacks 33 and 34 are located outside of a planewhere they can come into contact with jack raising cams15.Such inward movement of the lower end obviously results in outward movement of.
  • any one jack is located in the jack indexing section, theupper ends of jacks 12 will be acted upon by the indexing magnet 23 of upper magnet means 21 which partially neutralize the effect of the tween any jack 12, located circumferentially within the indexing section jack and the cam surface 29 provided that the jack 12 is an infinitely rigid element.
  • any real jack element is'not infinitely rigid and when loaded by forces acting at right angles to the longitudinal dimension at known distances on each side of a center support the jack will deflect in a known manner within its elastic limit and depending upon its cross section geometry.
  • any jack 12 located circumferentially within the jack indexing section with its lower end held against cam surface 32 by interaction with the magnetic field of lower magnet means 20, its mid-length located fulcrum point bearing on pivot cam 40, and its upper end interacting with the magnetic field of jack indexing magnet 23 of upper magnet means 21 will elastically and in a predetermined manner deflect outwardly toward the pole ends of jack indexing magnet 23 until contact is made with surface 29 of guard cam 27.
  • the elastic properties of a jack 12 are predetermined such that jack contact with all three cam surfaces 32, 40 and 29 will occur simultaneously in the jack indexing section of the actuator for each and every jack in a full cylinder revolution irrespective of normal wear, obtainable part tolerances and uneven temperature expansions which would otherwise cause the dimension air gap relationship between the jack and the magnets to be indeterminant.
  • This condition is necessary for error free selection because first, clearance (air gaps) to the magnet means and 21 are now the same for each and every jack at the select position, and second because with the jack bearing on the pivot cam surface 40 there is no possibility that jack impact with this surface, through cooperation with cam surface 37 on pole 31, can occur, such impact causing undesired bounce or recoil of the jack away from the actuator apparatus.
  • any pattern jack 12 will continue to be held by the lower magnets 30 and 31 so that it will follow the contour of pole cam surface 32 on the pole cam surface 37 into what is called the jack actuation section (see FIG. 8).
  • This is referred to as the jack actuation magnetic attraction of lower magnet means 20 to move awsay from the cylinder and out of its trick to a position where it will engage and be acted upon by the raising cam 15.
  • Jacks so disposed are identified by numeral 36 in FIG. 8.
  • pattern jacks 12 are vertically mounted in the longitudinally extending tricks of the needle cylinder 11 and rotate in a path on the periphery of this cylinder.
  • the actuator apparatus 10 At each yarn feeding station around the periphery of needle cylinder 11 there is located one of the actuator apparatus 10 so that at that location any needle can be caused to knit or not to knit depending upon whether or not the electromagnets 22 are sequentially energized.
  • the purpose for providing a multiplicity of electromagnets to effect the selection, when desired, of certain of the pattern jacks l2' is because of the desirability of providing as many needles in the needle cylinder as possible and to rotate the needle cylinder at an angular rate which is not limited by the selection v means.
  • each needle must be kept to an absolute minimum and when doing this, it then becomes necessary that a very narrow and yet continuously effective magnetic field must be maintained to ensure that any one of the jacks are held long enough to remove them from the infue nc'e of the lower magnetic means 20 into a selected position of non-knitting. Also, it is necessary that the lower magnet means 20 must hold jacks 36 in contact with'cam surface 27 long enough to pivot their lower ends into a position where they will engage and be acted upon by raising cam 15. Because the magnetic force acting on the jack is directly, relatable to the edge or thickness dimension of the 7 jack, a practical force limit exists. Also, because the force required to displace the jack against its inertia becomes increasingly great as the time available to displace the jack becomes less, it follows that, for high angular cylinder speeds,
  • the amount of. jack displacement which can be practically accomplished within a time period equivalent to one jack spacing may be inadequate to fully displacethe notched lower end of the jack 36 from the position where it will avoid contact with the raising cam 15 to the positionwhere it will engage and cooperate with the raising cam.
  • This condition is accommodated by accomplishing jack displacement, over a time period equivalent to multiplicity of jack spacings, which in turn determines the need for,the plurality of sequentially energized electromagnets 22 to ensure that the individual selected jacks 35 are held long enough to remove their lower ends from the influence of the lower magnet means 20.
  • the bottom ends of the pattern jacks When the drum is rotated so that the needles turn past each of the various selection stations, the bottom ends of the pattern jacks first come into contact with either the jack depressing or jack indexing section of the lower pole 31 of the magnetic static force assembly. At this time the jacks with the cooperation of jack indexing magnet 23 are is a select position with the notched lower ends of the jacks retracted into their cylinder tricks and located outside of a plane where they can come into contact with jack raising cams 15.
  • the jack will pivot about its fulcrum point bearing on pivot cam 40 the lower end of the pattern jack in cooperation with lower magnet means 20 will followalong the contour of cam surface 37 of lower pole 31 and move outward from the needle cylinder to the position where it will be acted upon by the next following raise cam 15. This of course vertically shifts all of the associated elements 12, 13 and 14 upwardly and will cause the needle to take yarn and then to subsequently draw down a new stitch.
  • the first of the electromagnets 22, and by first is meant the first one that is approached by any given traveling pattern jack, is energized, it will act to hold the upper end of .the selected jack 12 against the guard cam 27.
  • the jack indexing magnet 23 is located rotationally ahead of the permanent electromagnets 22 and that the jack latching magnet 24 is located rotationally behind the elecous that there has been provided an improved and radi- I cally different type of apparatus which is capableof selecting discrete articles of very small lateral dimensions with minimum probability of selecting or adversely effecting any of the other individual articles immediately adjoining or adjacent the article to be selected.
  • this mechanism provides a magnetic means formaking accurate selection of pattern jacks at high rotational cylinder speeds.
  • Actuator apparatus for selectively effecting positioningof needle jacks mounted within the tricks of the needle cylinder of a circular knitting machine to place the jacks in either a selected or a non-selected position
  • said apparatus comprising a magnetic static magnetic force translation assembly means including a plurality of electromagnets physically arranged in a predetermined mannerto enable them selectively to magnetically engage the other end of each selected jack with sequentially applied magnetic fields overcoming said magnetic means of said static force assembly means to hold the selected jack in the selected position where the associated needle will be caused to knit.
  • a magnetic static magnetic force translation assembly means including a plurality of electromagnets physically arranged in a predetermined mannerto enable them selectively to magnetically engage the other end of each selected jack with sequentially applied magnetic fields overcoming said magnetic means of said static force assembly means to hold the selected jack in the selected position where the associated needle will be caused to knit.
  • said magnetic means comprises a cam pole having a surface adapted to be contacted by said one end of each jack,
  • said contact surface being configured to cause the jacks to move into a position where they can be selected by said magnetic force translation assembly means when desired.
  • said magnetic force translation assembly includes jack -in dexing magnet means located rotationally ahead of said plurality of electromagnets to cooperate with said magnetic static force assembly means in positioning the jacks in a select position where they can be magnetically engaged by said plurality of electromagnets when they are energized.
  • said magnetic force translation assembly means includes jack latching magnet means located rotationally behind said plurality of electromagnets to magnetically engage said other ends of those jacks magnetically engaged by said plurality of electromagnets and hold the jacks in the non-operative position for a predetermined period.
  • first magnet means for magnetically engaging the lower ends of said jacks to place the jacks in the operative position in which the needles carried in the needle cylinder will becaused to knit, said first magnet means including: i l. a first pole, and
  • a second pole having a cam surface configured to cause the jacks to move to a position of selection
  • second magnet means for magnetically engaging the upper ends of said jacks to move them into a non-operative position in which the needles carried in the needle cylinder will be caused not toknit
  • a permanent magnet located rotatably ahead of said plurality of electromagnets to cooperate with said first magnet means in positioning the jacks in a select position where they can be magnetically engaged by said plurality of electromagnets when they are energized
  • a permanent magnet located rotatably behind said plurality of electromagnets to magnetically engage the upper ends of those jacks magnetically engaged by said plurality of electromagnets and hold the jacks in a non-operative position for a predetermined period;
  • a pivot cam located between said upper and lower magnet means to provide a fulcrum about which the jacks will pivot when acted upon by said magnet means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00135319A 1971-04-19 1971-04-19 Circular knitting machine needle selecting apparatus Expired - Lifetime US3851500A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US00135319A US3851500A (en) 1971-04-19 1971-04-19 Circular knitting machine needle selecting apparatus
ZA721490A ZA721490B (en) 1971-04-19 1972-03-06 Circular knitting machine needle selecting apparatus
IT49104/72A IT957577B (it) 1971-04-19 1972-03-18 Perfezionamento nelle macchine e nei procedimenti per la lavorazione a maglia circolare
NL7204087A NL7204087A (es) 1971-04-19 1972-03-27
FR727211879A FR2133604B1 (es) 1971-04-19 1972-04-05
AR241340A AR195483A1 (es) 1971-04-19 1972-04-06 Aparato selector de cuerpos individuales, particularmente de agujas para maquina de tejer circular, y metodo para efectuar la ubicacion de los levantadores de estas
DE19722217115 DE2217115A1 (de) 1971-04-19 1972-04-10 Nadelauswählvorrichtung für Rundstrickmaschinen
CH551172A CH534758A (de) 1971-04-19 1972-04-14 Einrichtung zur Nadelwahl für Rundstrickmaschinen
BE782283A BE782283A (fr) 1971-04-19 1972-04-18 Appareil selecteur d'aiguilles de metiers a tricoter circulaires
BR2311/72A BR7202311D0 (pt) 1971-04-19 1972-04-18 Aparelho e processo para seletivamente efetuar a colocacao em posicao de platinas de agulhas ou de padrao no interior das ranhuras de um cilindro de agulhas de uma maquina de malharia circular e aparelho para seletivamente efetuar o deslocamento de platinas de padrao e para selecionar corpos individuais ou distintos uns dos outros a medida que sao levados a deslocarem-se ao longo de um local de selecao
ES401920A ES401920A1 (es) 1971-04-19 1972-04-19 Procedimiento y aparato para seleccionar la posicion de laspalancas selectoras de agujas o dibujo, montadas en las ra-nuras de dibujo de un cilindro de agujas de un telar circu- lar para tejidos de punto.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00135319A US3851500A (en) 1971-04-19 1971-04-19 Circular knitting machine needle selecting apparatus

Publications (1)

Publication Number Publication Date
US3851500A true US3851500A (en) 1974-12-03

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Application Number Title Priority Date Filing Date
US00135319A Expired - Lifetime US3851500A (en) 1971-04-19 1971-04-19 Circular knitting machine needle selecting apparatus

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US (1) US3851500A (es)
AR (1) AR195483A1 (es)
BE (1) BE782283A (es)
BR (1) BR7202311D0 (es)
CH (1) CH534758A (es)
DE (1) DE2217115A1 (es)
ES (1) ES401920A1 (es)
FR (1) FR2133604B1 (es)
IT (1) IT957577B (es)
NL (1) NL7204087A (es)
ZA (1) ZA721490B (es)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3948062A (en) * 1973-08-15 1976-04-06 Precision Fukuhara Works, Inc. Electronic needle selecting means for circular knitting machines
US3971233A (en) * 1973-11-22 1976-07-27 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Circular knitting machine with pattern producing devices
US4033148A (en) * 1975-08-08 1977-07-05 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Of Czechoslovakia Needle selecting device
US4171628A (en) * 1975-05-22 1979-10-23 C. Terrot Soehne Gmbh & Co. Magnetic control system for circular knitting machines
US4793159A (en) * 1987-02-27 1988-12-27 Precision Fukuhara Works, Ltd. Needle selection device for circular knitting machines
US4901541A (en) * 1987-04-20 1990-02-20 Okuma Machinery Works Ltd. Needle selector for knitting machine
US6145349A (en) * 1997-02-04 2000-11-14 Pilotelli Macchine Tessili S.R.L. Method and equipment for Jacquard selection in a textile machine
US20220243370A1 (en) * 2019-06-11 2022-08-04 Santoni S.P.A. A flat part for a knitting machine and a knitting machine comprising such flat part

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015936A1 (de) * 1990-05-17 1991-11-21 Schieber Universal Maschf Strickmaschine
IT1269153B (it) 1994-11-17 1997-03-21 Ettore Negri Sistema elettromagnetico di selezione degli aghi per macchine da maglieria

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Publication number Priority date Publication date Assignee Title
US3262285A (en) * 1962-07-11 1966-07-26 Beguin Rene Electromagnetic needle selection mechanism
US3283541A (en) * 1963-02-14 1966-11-08 Dubied & Cie Sa E Method and device for the individual control of selecting members
US3292393A (en) * 1963-04-20 1966-12-20 Morat Kg Franz Pattern control arrangement for circular knitting machines
GB1116744A (en) * 1964-10-22 1968-06-12 Dubied & Cie Sa E Improvements in or relating to electromechanical selection systems for the needles of knitting machines
US3449928A (en) * 1965-03-06 1969-06-17 Morat Gmbh Franz Selector apparatus for circular knitting machines
US3518845A (en) * 1966-11-14 1970-07-07 Dubied & Cie Sa E Selecting device for individual selection of the knitting tools in very fine gauge knitting machines
US3710594A (en) * 1969-08-05 1973-01-16 Bonneterie Sa Et Device for the selection of the needles or knitting accessories of circular knitting machines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262285A (en) * 1962-07-11 1966-07-26 Beguin Rene Electromagnetic needle selection mechanism
US3283541A (en) * 1963-02-14 1966-11-08 Dubied & Cie Sa E Method and device for the individual control of selecting members
US3292393A (en) * 1963-04-20 1966-12-20 Morat Kg Franz Pattern control arrangement for circular knitting machines
GB1116744A (en) * 1964-10-22 1968-06-12 Dubied & Cie Sa E Improvements in or relating to electromechanical selection systems for the needles of knitting machines
US3449928A (en) * 1965-03-06 1969-06-17 Morat Gmbh Franz Selector apparatus for circular knitting machines
US3518845A (en) * 1966-11-14 1970-07-07 Dubied & Cie Sa E Selecting device for individual selection of the knitting tools in very fine gauge knitting machines
US3710594A (en) * 1969-08-05 1973-01-16 Bonneterie Sa Et Device for the selection of the needles or knitting accessories of circular knitting machines

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3948062A (en) * 1973-08-15 1976-04-06 Precision Fukuhara Works, Inc. Electronic needle selecting means for circular knitting machines
US3971233A (en) * 1973-11-22 1976-07-27 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Circular knitting machine with pattern producing devices
US4171628A (en) * 1975-05-22 1979-10-23 C. Terrot Soehne Gmbh & Co. Magnetic control system for circular knitting machines
US4033148A (en) * 1975-08-08 1977-07-05 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Of Czechoslovakia Needle selecting device
US4793159A (en) * 1987-02-27 1988-12-27 Precision Fukuhara Works, Ltd. Needle selection device for circular knitting machines
US4901541A (en) * 1987-04-20 1990-02-20 Okuma Machinery Works Ltd. Needle selector for knitting machine
US6145349A (en) * 1997-02-04 2000-11-14 Pilotelli Macchine Tessili S.R.L. Method and equipment for Jacquard selection in a textile machine
US20220243370A1 (en) * 2019-06-11 2022-08-04 Santoni S.P.A. A flat part for a knitting machine and a knitting machine comprising such flat part

Also Published As

Publication number Publication date
DE2217115A1 (de) 1972-10-26
FR2133604A1 (es) 1972-12-01
ES401920A1 (es) 1975-03-01
FR2133604B1 (es) 1973-06-29
NL7204087A (es) 1972-10-23
CH534758A (de) 1973-03-15
ZA721490B (en) 1972-11-29
IT957577B (it) 1973-10-20
BE782283A (fr) 1972-08-16
AR195483A1 (es) 1973-10-15
BR7202311D0 (pt) 1973-06-07

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