US3530686A - Pattern device for circular knitting machines having rotary needle carriers - Google Patents

Pattern device for circular knitting machines having rotary needle carriers Download PDF

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Publication number
US3530686A
US3530686A US697878A US3530686DA US3530686A US 3530686 A US3530686 A US 3530686A US 697878 A US697878 A US 697878A US 3530686D A US3530686D A US 3530686DA US 3530686 A US3530686 A US 3530686A
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United States
Prior art keywords
pattern
armature
armature means
control
electromagnet
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Expired - Lifetime
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US697878A
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English (en)
Inventor
Johann Martinetz
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Mayer and Cie GmbH and Co
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Mayer and Cie GmbH and Co
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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

  • a plurality of armature means respectively coact with the pattern feet to control the positions of the control plates, and each armature means is supported for swinging movement immediate its ends, one end being adapted to engage a pattern foot and the other end carrying a permanent magnet means.
  • a plurality of electromagnets respectively coact with the permanent magnet means, and each electromagnet includes a pair of opposed pole shoes between which a permanent magnet means is located and a direct current exciting coil which will control the polarity of the pole shoes depending upon the direction of the direct current. In this way with a single impulse of direct current it is possible to swing an armature means, and when the pulse of current terminates the permanent magnet means will maintain the armature means in the position to which it has been displaced.
  • the present invention relates to pattern devices for circular knitting machines which have rotary needle carriers.
  • the present invention relates to that type of circular knitting machine where the selection of needles is carried out by means of electromagnetically actuated control members which, in accordance with a predetermined pattern, will control the positions of control plates or jacks which are carried by the rotary needle carrier.
  • each armature at its end which is distant from the pattern feet with a permanent magnet structure situated between opposed pole shoes of an electromagnet which is excited in one direction or the other with direct current so as to control the polarity of the pole shoes.
  • a structure which eliminates all play in the supporting structure for the armatures.
  • the objects of the present invention also include the provision of a construction which can be readily adapted to existing machines so that it is not required to build entirely new machines to have the structure of the present invention.
  • FIG. 1 is a schematic side elevation of a pattern structure of the invention, showing partly in section structures such as the needle cylinder and electromagnetic structure;
  • FIG. 2 is a top plan view of the structure of FIG. 1 as seen in the direction of arrow II of FIG. 1;
  • FIG. 3 is a sectional view, on an enlarged scale as compared to FIG. 2, taken through an adjustable bearing structure along line III of FIG. 2 in the direction of the arrow;
  • FIG. 4 is a sectional elevation of another embodiment of a bearing structure for engaging an end of a shaft means of the invention.
  • the pattern structure which is illustrated in a highly schematic manner in the drawings is used for the pattern selection of cylinder needles of a knitting system of a circular knitting machine.
  • This structure includes, for example, six selecting armature means 1-6 in the form of swingable armature levers which are respectively turnable about shafts 7 on which the several levers are freely turnable without any play. These shafts are supported in a housing 8 composed of a plurality of plates, for example.
  • Each of the adjusting armature means 1-6 includes an adjusting arm 1a, 1b, 10, etc. which, as shown in FIG.
  • the several pattern feet 9 of the control plates 12 are arranged, in a manner known with mechanical pattern devices, at different elevations.
  • the control plates 12 are arranged in groups of six wherein in each group the pattern feet are located successively at different elevations.
  • a separate armature means, of the several armature means 1-6 is provided for a particular one of the pattern feet 9.
  • these pattern feet 9 of the successive plates 6 are offset with respect to each other in a stepwise arrangement so that in an unillustrated plan view, which is, however, shown in the above-mentioned application, the several pattern feet 9 of each group of six control plates are arranged along a helix which extends around the axis of the needle cylinder.
  • the armature means 1-6 it is possible to provide a relatively large distance between successive control plates which are to be controlled by one of the armature means 1-6.
  • the rapidity with which the armature means must be actuated is reduced, so that the operations of the pattern device can be carried out with great reliability, which is of considerable significance.
  • Each armature means can be adjusted in the period of time required for movement of one pattern foot at one elevation to the location previously occupied by the next pattern foot which is at the same elevation and which is six control plates distant from the first pattern foot, so that in accordance with the size of this time interval it is possible to provide relatively large switching tolerances for the structure which actuates the armature means, and
  • Such a construction also provides relatively large tolerances and the simplicity of the programming switch structure of the pattern device.
  • each control plate 12 has a lower butt or foot 13 by means of which it can be swung into the guiding groove or trick 10 of the needle cylinder 11.
  • each foot 13 will be situated in an outer position to engage a control cam 14 so that when a foot 13 is in the dotted line position 13' shown in FIG. 1 the cams will coact with the control plates 12 to displace the latter for shifting needles.
  • the control plates will participate in the operations and will be displaced through predetermined working strokes so that the needles which are respectively controlled by these control plates will be displaced to their operating positions.
  • control plates 12 and thus of their butts 13 is brought about by way of the swingable amature means 1-6 of the pattern structure.
  • the swingable armature means 13, 5 and 6 are in their operating positions where their pattern-foot engaging arms are in the position for engaging the pattern feet 9 of the corresponding control plates 12 so that these pattern plates will be swung into the grooves 10 of the needle cylinder 11 to prevent these particular control plates from participating in the operations.
  • the thusdisplaced control plates 12 cannot reach the next operating positions, and the needles which are respectively controlled thereby remain in the rest positions.
  • the armature means 4 is illustrated in a rest position where its adjusting arm 4a is situated beneath the pattern foot 9' which it otherwise would engage, and thus the corresponding control plate 12' will have its pattern foot 9' pass over the arm 4a so as not to be displaced thereby.
  • the control plate 12' which is shown in dotted lines together with its pattern foot 9' remains in its outwardly swung position so that the control butt 13 of this particular control plate 12' along its working stroke to place the needle controlled will be actuated by the cam means and will be displaced thereby in an operating position.
  • FIG. 2 shows in plan view the details of the armature means 1 which has its adjusting arm 1a situated in an operating position where its inclined end surface 1b will be engaged by the corresponding pattern foot 9, and of course each sixth pattern foot 9 which is situated at the elevation of the arm 1a will ride along the surface 1! thereof to be swung inwardly to prevent these particular control plates from entering into the knitting operations.
  • This result is achieved because only every sixth control plate has a pattern foot 9 which is situated at the elevation of the inclined end 1b of the armature means 1.
  • the control arms of the remaining armature means are not illustrated.
  • the several swingable armature means are preferably supported for swinging movement about axes which pass through their centers of gravity, respectively, and for this purpose the several armature means 1-6 are supported for swinging movement on shafts 7 which respectively extend without play through bores of the several armature means.
  • the several armature means 1-6 have arms 10, 2c, etc. which are directed oppositely to arms 1a, 112, etc.
  • the arms 2c and 3c are fragmentarily illustrated in FIG. 2 and the remaining arms of the lower armature means 4-6 are respectively situated beneath the arms 1c-3c shown in FIG. 2.
  • the arm 10 as shown in FIG. 1 extends between the pole shoes 15a and 15b of an electromagnet 15 which is provided with a direct-current exciting coil 16, and the remaining control arms of the armature means which are respectively distant from the pattern feet 9 respectively extended into the spaces between the opposed pole shoes of identical electromagnets 15.
  • each armature means has at its arm which extends between the pole shoes of the electromagnet a permanent magnet means which in the illustrated example consists of a pair of permanent magnet plates 19a and 19b of relatively small size respectively fixed to opposed faces of the armature arm 10, and of course the remaining armature arms which are respectively situated between the pole shoes are also provided with small permanent magnets 19a and 19b.
  • these permanent magnets are arranged with their north poles directly away from each other and with their south poles directed toward each other.
  • the permanent magnet means 19a, 191) has identical poles respectively directed toward the pole shoes 15a and 15b of the permanent magnet means, and these identical poles are north poles in the illustrated sample.
  • the permanent magnet 19b will be attracted to the pole shoe 1512, as shown in FIG. 1, or the permanent magnet 19a will be attracted to the pole shoe 15a.
  • the coil 16 is connected to a pair of junctions 20 and 21 whichcan interchangeably be provided with positive or negative polarity, as indicated in FIG. 1, so that in this way the direction of flow of the direct current and the polarity of the pole shoes 15a and 1511 can be controlled. It is to be noted that with this construction the armature means will stably remain in the position to which it is displaced.
  • the other five armature means 2-6 are controlled in precisely the same way as the armature means 1 as described above and shown in the drawings.
  • they are stacked in three rows as indicated in FIG. 2 with the arms 10, 20, etc. of the successive armature means 1-6 correspondingly offset so as to be respectively situated between the pole shoes of the control magnets.
  • the several armature means of the invention are supported for rotary movement in a play-free manner.
  • each armature means terminates at its outer end in a pair of pointed tips 7a, as shown at an enlarged scale in FIGS. 3 and 4.
  • Each of these tips is situated, as shown in FIGS. 2 and 3, in a bearing cap 23 provided with rotary ball bearing members 22, or, as shown in FIG. 4, it is possible to situate each tip 7a in a tapered recess of a bearing block 24.
  • This bearing support 25 includes, as shown in FIGS. 2 and 3, a bore 27 formed in a screw 26 which is threaded into a threaded bore of a wall of the housing 8, and the cap 23 is received in this bore 27 in which it is freely slidable.
  • a compression spring 28 is situated in the bore 27 and urges the cap 23 at one end of the shaft 7 toward the opposed end of the shaft 7, and a lock nut 29 is carried by the screw 26 so that by loosening the lock nut it is possible to adjust the axial position of the screw 26 and thus adjust the force of the spring 28, Then the lock nut 29 is tightened so as to maintain the adjustment.
  • an adjusting means is provided for adjusting the spring force with which one of the bearing means at one end of the shaft 7 is urged toward the other of the bearing means.
  • This construction provides a play-free support for each armature means, so that each armature means can swing without play.
  • FIG. 4 illustrates a simpler embodiment for achieving a play-free bearing, and with this construction the bearing block 24 is fixed to a leaf spring 30 which at its end 30a is fixed by rivets 31 to a wall of the housing 8 and which at its other end 30b has a convexly curved surface freely pressing against the inner surface of'a wall of the housing 8 so as to provide in this way a prestressing of the leaf spring so that there is a constant pressure of the bearing block 24 toward the left, as viewed in FIG. 4, along the axis of the shaft 7, to urge the latter at its opposite tip into a stationary bearing block 24 corresponding to that shown in FIG. 4.
  • each armature means at its permanent magnet portion assumes in a stable manner one of the pair of opposed end positions in which the permanent magnet portion engages either one or the other of the pole shoes of the electromagnet.
  • the electromagnet need not be constantly energized since a single impulse will be sufficient to displace the armature means which will then reliably remain in the adjusted position as a result of the action of the electromagnet, so that only a short current impulse is required for adjusting purposes.
  • the coils thereof can be very small while at the same time they are capable of being excited with a relatively strong current impulse which if it continued would result in overheating of the coil, but which does not have this result because of the short duration of the impulse.
  • each armature means reliably prevents undesirable rebounding of the armature means after it has been adjusted.
  • the spring force which axially urges the bearing at one end of the shaft 7 toward the bearing at the other end thereof provides in a highly reliable manner a constant play-free seating for the ends of the shaft means 7 to eliminate any possibility of play and rebounding.
  • the pattern device is mechanically very simple and can easily be added to existing machines which initially were designed for mechanically actuated pattern devices.
  • the pattern device of the invention is not subject to any faulty operation and can be constructed and operated in 7 a practically maintenance-free manner, while at the same time being capable of being encased in a dust-tight manner within a suitable enclosure.
  • the structure of the invention it is possible to control either cylinder needles or dial needles.
  • the several armature means of the invention can be arranged one above the other along the outer casing of the needle cylinder, while in the case of dial needles the turning axes of the several armature means of the invention can be vertically arranged one after the other.
  • the pattern device of the invention is constructed in such a way that a change of the cam-controlling system and the control plate arrangement in known mechanical Jacquard pattern devices having pin wheels is not required.
  • An electromechanically operating pattern device which is operated by a punched tape, a film strip, a magnetic strip or the like, which feeds signals to the programming device can be provided on existing machines which originally were provded with mechanical patterning structures for the circular knitting machine.
  • a pattern device for a circular knitting machine rotary needle-carrier means carrying needle-controling plates which respectively have pattern feet which respectively move along predetermined paths during rotation of said rotary needle-carrier means a plurality of armature means for respectively coacting with predetermined groups of said feet for controlling the positions of said plates each armature means having one end for engaging a pattern foot of a control plate and an opposed end distant therefrom support means supporting each armature means for swinging movement about a given axis between its opposed ends permanent magnet means having a pair of opposed permanent magnets with like poles respectively directed toward the pole shoes of each electromagnet carried by each armature means at said opposed end thereof and a plurality of electromagnets respectively coacting with said permanent magnet means of said armature means each electromagnet having a pair of opposed pole shoes between which a permanent magnet means is located and each electromagnet having an exciting coil adapted to be supplied with direct current so that in accordance with the direction of flow of the direct current one or the other of the pole shoes will be excited to attract said
  • each armature means has a pair of opposed portions beyond which a pair of shaft portions respectively extend along said axis and said support means including bearing engaging said shaft portions at outer extremeties thereof to support said shaft portions for rotary movement without play said support means pressing one bearing axially toward the other.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US697878A 1967-03-06 1968-01-15 Pattern device for circular knitting machines having rotary needle carriers Expired - Lifetime US3530686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1635848A DE1635848C3 (de) 1967-03-06 1967-03-06 Mustervorrichtung für Rundstrickmaschinen mit umlaufenden Nadelträgern

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US3530686A true US3530686A (en) 1970-09-29

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US697878A Expired - Lifetime US3530686A (en) 1967-03-06 1968-01-15 Pattern device for circular knitting machines having rotary needle carriers

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US (1) US3530686A (de)
DE (1) DE1635848C3 (de)
ES (1) ES349095A1 (de)
FR (1) FR1564603A (de)
GB (1) GB1224000A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742733A (en) * 1971-06-04 1973-07-03 Warren & Swasey Co Knitting machine
US3747370A (en) * 1971-03-19 1973-07-24 Northrop Carolina Inc Pattern jack actuator means for circular knitting machines
US3855819A (en) * 1973-02-23 1974-12-24 Precision Fukuhara Works Ltd Electro-mechanical needle selecting means for circular knitting machines
US3896639A (en) * 1973-01-09 1975-07-29 Hayes Albion Corp Knitting machine actuators
US3908403A (en) * 1973-02-28 1975-09-30 Battelle Memorial Institute Knitting machine
US3928988A (en) * 1972-08-12 1975-12-30 Luth Claus Peter Magnetic control device for yarn guides
DE2537118A1 (de) * 1974-08-20 1976-03-11 Matec Spa Radial wirkende nadelwaehlvorrichtung an einer rundstrickmaschine mit radial schwingenden nadelstoessern
US3948062A (en) * 1973-08-15 1976-04-06 Precision Fukuhara Works, Inc. Electronic needle selecting means for circular knitting machines
US3972207A (en) * 1974-11-04 1976-08-03 Vinatex Knitting Systems, Inc. Selection device for the needles of a knitting machine
US3990270A (en) * 1972-11-03 1976-11-09 Hayes-Albion Corporation Knitting machine
US4972686A (en) * 1987-10-07 1990-11-27 Nagata Seiki Kabushiki Kaisha Electromagnetic needle selector for circular knitting machines
US5095721A (en) * 1989-05-11 1992-03-17 Savio S.P.A. Needle section device having rocker levers in a circular machine
US5241288A (en) * 1990-11-23 1993-08-31 Savio S.P.A. Electromagnetic selector equipped with a plurality of selection positions
US5408852A (en) * 1993-01-08 1995-04-25 Harting Elektronik Gmbh System of magnets for a selection block in textile machines

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2343845A1 (fr) * 1976-03-08 1977-10-07 Asa Sa Installation pour le changement des fils d'alimentation dans un metier a tricoter circulaire
JPS5587385U (de) * 1978-12-13 1980-06-16
JPS59199850A (ja) * 1983-04-26 1984-11-13 永田精機株式会社 電子柄出し丸編機の電磁選針装置
JPS60224845A (ja) * 1984-04-21 1985-11-09 ワックデータサービス株式会社 丸編機用選針装置
GB2229198B (en) * 1989-03-15 1992-09-09 Nagata Seiki Kk Piezoelectric needle selector in a circular knitting machine
DE4213764C1 (de) * 1992-04-27 1993-10-07 Harting Elektronik Gmbh Magnetsystem für die Nadelauswahl in Textilmaschinen

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE24031C (de) * H. KLINGHAMMER in Langensalza Drehbarer Blumentisch
US29224A (en) * 1860-07-17 Improvement in shuttles for sewing-machines
US613178A (en) * 1898-10-25 Type-writer
US1748734A (en) * 1927-03-11 1930-02-25 Morton Mfg Company Releasable curtain-roller mounting
CA461939A (en) * 1949-12-20 S. Williams Lawrence Integral ball bearing
US2558455A (en) * 1948-07-06 1951-06-26 Novak Frank Motor-driven brush assembly
CH381282A (de) * 1958-11-28 1964-08-31 Deutsche Fernsprecher Gmbh Lager für die Achse des Bremsreglers eines Fernsprechnummernschalters
US3365916A (en) * 1965-03-02 1968-01-30 Morat Kg Franz Selector magnetic arrangement for knitting machines
US3461690A (en) * 1966-02-28 1969-08-19 Mayer & Cie Maschinenfabrik Pattern device for circular knitting machines

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE24031C (de) * H. KLINGHAMMER in Langensalza Drehbarer Blumentisch
US29224A (en) * 1860-07-17 Improvement in shuttles for sewing-machines
US613178A (en) * 1898-10-25 Type-writer
CA461939A (en) * 1949-12-20 S. Williams Lawrence Integral ball bearing
US1748734A (en) * 1927-03-11 1930-02-25 Morton Mfg Company Releasable curtain-roller mounting
US2558455A (en) * 1948-07-06 1951-06-26 Novak Frank Motor-driven brush assembly
CH381282A (de) * 1958-11-28 1964-08-31 Deutsche Fernsprecher Gmbh Lager für die Achse des Bremsreglers eines Fernsprechnummernschalters
US3365916A (en) * 1965-03-02 1968-01-30 Morat Kg Franz Selector magnetic arrangement for knitting machines
US3461690A (en) * 1966-02-28 1969-08-19 Mayer & Cie Maschinenfabrik Pattern device for circular knitting machines

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747370A (en) * 1971-03-19 1973-07-24 Northrop Carolina Inc Pattern jack actuator means for circular knitting machines
US3742733A (en) * 1971-06-04 1973-07-03 Warren & Swasey Co Knitting machine
US3928988A (en) * 1972-08-12 1975-12-30 Luth Claus Peter Magnetic control device for yarn guides
US3990270A (en) * 1972-11-03 1976-11-09 Hayes-Albion Corporation Knitting machine
US3896639A (en) * 1973-01-09 1975-07-29 Hayes Albion Corp Knitting machine actuators
US3855819A (en) * 1973-02-23 1974-12-24 Precision Fukuhara Works Ltd Electro-mechanical needle selecting means for circular knitting machines
US3908403A (en) * 1973-02-28 1975-09-30 Battelle Memorial Institute Knitting machine
US3948062A (en) * 1973-08-15 1976-04-06 Precision Fukuhara Works, Inc. Electronic needle selecting means for circular knitting machines
DE2537118A1 (de) * 1974-08-20 1976-03-11 Matec Spa Radial wirkende nadelwaehlvorrichtung an einer rundstrickmaschine mit radial schwingenden nadelstoessern
US3972207A (en) * 1974-11-04 1976-08-03 Vinatex Knitting Systems, Inc. Selection device for the needles of a knitting machine
US4972686A (en) * 1987-10-07 1990-11-27 Nagata Seiki Kabushiki Kaisha Electromagnetic needle selector for circular knitting machines
US5095721A (en) * 1989-05-11 1992-03-17 Savio S.P.A. Needle section device having rocker levers in a circular machine
US5241288A (en) * 1990-11-23 1993-08-31 Savio S.P.A. Electromagnetic selector equipped with a plurality of selection positions
US5408852A (en) * 1993-01-08 1995-04-25 Harting Elektronik Gmbh System of magnets for a selection block in textile machines

Also Published As

Publication number Publication date
DE1635848A1 (de) 1972-03-30
ES349095A1 (es) 1969-04-01
GB1224000A (en) 1971-03-03
FR1564603A (de) 1969-04-25
DE1635848C3 (de) 1978-11-23
DE1635848B2 (de) 1978-03-16

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