US3672186A - Method and apparatus for forming a rib fabric having a two-ply section - Google Patents

Method and apparatus for forming a rib fabric having a two-ply section Download PDF

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Publication number
US3672186A
US3672186A US27239A US3672186DA US3672186A US 3672186 A US3672186 A US 3672186A US 27239 A US27239 A US 27239A US 3672186D A US3672186D A US 3672186DA US 3672186 A US3672186 A US 3672186A
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United States
Prior art keywords
needles
yarn
cylinder
dial
hook
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Expired - Lifetime
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US27239A
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English (en)
Inventor
Joseph Rab
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KNIT Tech DEV CORP
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KNIT Tech DEV CORP
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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
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/58—Thread guides for circular knitting machines; Thread-changing devices
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/06—Circular knitting machines with independently-movable needles with needle cylinder and dial for ribbed goods
    • 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
    • D04B15/80—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the thread guides used
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/26—Circular knitting machines with independently-movable needles for producing patterned fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/023—Fabric with at least two, predominantly unlinked, knitted or woven plies interlaced with each other at spaced locations or linked to a common internal co-extensive yarn system

Definitions

  • ABSTRACT The method of knitting two-ply segments extending coursewise of a rib fabric on a knitting machine of the type having two sets of needles, for example cylinder and dial needles, a plurality of feeds, and means at a selected feed for guiding the yarn forming each ply into the path of the hooks of the needles on which it is being knit and into the hook-opposite side of the other set of needles.
  • the feeding of the yarns to their respective sets of needles is carried on at a single yam feed without reliance on any special cams or delayed timing.
  • ATTORNEY METHOD AND APPARATUS FOR FORMING A RIB FABRIC HAVING A TWO-FLY SECTION BACKGROUND OF THE INVENTION The present invention is herein described with respect to circular knitting machines comprising two sets of needles, one set in the cylinder and the other in the dial, although the basic principle of the invention is also applicable to V-bed flat knitting machines.
  • a machine of the circular design will conventionally include a number of knitting feeds or feed stations evenly distributed about its circumference, the number of feeds, all other variables being constant, determining the rate ofproduction of the machine.
  • each feed station includes a conventional yarn carrier which performs the dual function of feeding the yarn into the path of both the cylinder and dial needles, as well as guarding the latches of both sets of needles from inadvertent closing.
  • the cylinder needles are reciprocated in a vertical direction, while the dial needles are radially reciprocable at specified yarn feeds to accomplish the knitting of the fabric.
  • the present invention combines the cylinder-only and dial-only knitting functions at a single feed thereby substantially increasing machine productivity.
  • the improved method for forming the two-ply segment of a course comprises introducing the yarn forming one ply only to the cylinder needles at a position beneath or on the hook-opposite side of the dial needle shanks, so that the yarn is only picked up by the hooks of the cylinder needles. Simultaneously, and at the same feed, the yarn forming the other ply and being fed only to the dial needles is introduced at a position behind or on the hook-opposite side of the cylinder needle shanks, so that the yarn is picked up by the dial needles only.
  • the conventional yarn carrier is used only for its latch guarding function, both yarn ends being fed through an auxiliary yarn guide attached to the machine at a prescribed position adjacent and slightly spaced in a circumferential direction from the conventional yarn guide.
  • the auxiliary guide includes a first opening therein at a point below the level of the dial needles-and a second opening at a point radially inward from the cylinder needles.
  • FIG. 1 is a fragmentary perspective view, with parts broken away, of a cylinder and dial type of knitting machine to which the improved attachments have been applied;
  • FIG. 2 is a view similar to FIG. 1, except looking from the opposite side of the yarn guides;
  • FIG. 3 is a perspective view of the auxiliary yarn guide illustrated in FIGS. 1 and 2 removed from the knitting machine;
  • FIG. 4 is a reduced fragmentary plan view of the knitting machine illustrated in FIGS. 1 and 2; 7
  • FIG. 5 is an enlarged elevation view of the apparatus illustrated in FIG. 4;
  • FIG. 6 is a vertical sectional view, partially in elevation, taken substantially along the line 6-6 in FIG. 5;
  • FIG. 7 is a diagrammatic view showing the relationship between the yarn ends forming the two plies and the cylinder and dial needles of a circular knitting machine having rib gating, and the'operational sequence of these needles as the yarns are supplied according to the present improved method;
  • FIG. 8 is a schematic view of the needles and yarn relationship employed at consecutive feeds when knitting a first fabric having a two-ply segment according to the prior art
  • FIG. 9 is a schematic view of the needle and yarn relationship employed at consecutive feeds when knitting said first fabric according to the present invention.
  • FIG. 10 is a schematic view of the needle and yarn relationship employed at consecutive feeds when knitting a second fabric having a two-ply segment according to the prior art
  • FIG. 11 is a schematic view of the needle and yarn relationship employed at consecutive feeds when knitting said second fabric according to the present invention.
  • FIG. 12 is a schematic view of the needle and yarn relationship employed at consecutive feeds when knitting a third fabric having a two-ply segment according to the prior art
  • FIG. 13 is a schematic view of the needle and yarn relationship employed at consecutive feeds when knitting said third fabric according to the present invention.
  • FIG. 14 is a schematic view of the needle and yarn relationship employed at consecutive feeds when knitting a fourth fabric having a two-ply segment according tothe prior art.
  • FIG. 15 is a schematic view of the needle and yarn relationship employed at consecutive feeds when knitting said fourth fabric according to the present invention.
  • FIGS. 1 and 2 the present invention is illustrated in connection with a circular knitting machine of the type having a set of dial needles I2 and a set of cylinder needles 14, the two sets operating synchronously. It should be recognized, however, that the invention might also be utilized with a V-bed flat machine.
  • a plate 10 is divided into a plurality of segments including 10, I0 and 10", each of the segments covering a plurality of dial needles and being removable to provide access thereto.
  • the dial needles 12 are mounted in the dial l3 beneath plate for radial reciprocatory movement, and the cylinder needles 14 are mounted in a needle cylinder (not shown) for vertical reciprocatory movement, the paths of the respective needles intersecting.
  • the dial needles 12 are oriented in a position with the hooks thereof above the shank, and the cylinder needles are so oriented that the hooks face the outside of the shank or toward the outside of the cylinder formed by the cylinder needles 14.
  • the cylinder and dial needles are arranged alternately around the periphery of the knitting machine in what is referred to as rib gating.
  • An adjacent cylinder needle and dial needle, as used hereinafter in this specification is described as a cylinder/dial needle pair.
  • a conventional yarn carrier 16 is adjustably attached to a mounting bracket 18in a well-known manner, which, in turn, is suitably secured to the knitting machine.
  • the conventional carrier 16 is useful in the practice of the present invention only in its latch guarding function (except when a third yarn or additional yarns are utilized in both plies), because neither yarn end x or y actually passes through the openings 17 which normally feed the yarn to the needles in forming the standard rib fabric. Where additional yarns are used in both plies, they may of course be fed through an opening 17 in conventional carrier 16 if they are to be knit into both plies.
  • yarn carrier 16 is used in its normal manner, while the yarn feeding is accomplished at the feed illustrated in FIGS. 1 and 2 by an auxiliary yarn guide 20.
  • Yarn guide 20 is suitably attached to the knitting machine at a position circumferentially preceding yarn carrier 16, atop the point where both sets of needles are in their retracted positions.
  • the auxiliary guide 20 includes a first yarn feeding passageway 22 receiving and guiding yarn end x and a second yarn feeding passageway 24 receivingand guiding yarn y.
  • the respective yarns are fed into a position beneath (in the case of yarn end x) and behind (in the case of yarn end y) conventional guide 16, whereby the yarn x to be knit on the cylinder needles only is laid in beneath the shank (hook-opposite side) of the dial needles and the yarn y to be knit on the dial needles only is laid in behind the shank (hook-opposite side) of the cylinder needles.
  • auxiliary yarn guide 20 comprises a generally L-shaped plate 26 vertically arranged and having a horizontal flange 28 extending adjacent the upper surface of plate segment 10" from the upper end of upright leg 26a and a depending tab protruding downwardly from the outer end of the horizontal leg 26b.
  • An opening 29 in the upper horizontal flange 28 provides a means for securing yarn guide 20 to the stationary plate segment 10.
  • Opening 22 in tab 30 lies below the horizontal plane defined by the dial needles 12, while a second opening 24 in the heel portion 27 of L- shaped plate 26 lies behind or radially inward of the cylinder formed by the cylinder needles 14.
  • the yarn strand x extends through opening 22 in auxiliary yarn guide 20 and is fed beneath the shanks of dial needles 12 to a position beneath conventional yarn guide 16 into the path of the hooks of successive cylinder needles 14.
  • the path of yarn x intersects the downward path of cylinder needles 14 at a point circumferentially succeeding conventional yarn guide 16 and at a knitting point immediately prior to the closing of the latch.
  • the above described yarn path defines a critical angle exceeding the tangent to the cylinder formed by the cylinder needles taken at the point where the yarn is first engaged by the cylinder needles, in that if the angle is too small, the yarn is subject to the scissors effect of the needle latch which can snag or rupturethe yarn. In such a situation, by way of explanation, the scissors effect is likely to occur in the present invention because the feeding point of the yarn taken by the cylinder needles is below the level of the dial needles, a point lower than normal with respect to each cylinder needle latch.
  • feed angle ensures that the upper portion of the latch engages the yarn and properly moves it into knitting position.
  • the second yarn strand y extends through opening 24 in the heel 27 of yarn guide 20 and is fed behind the shanks of cylinder needles 14 to a position in the inward path of the hooks of dial needles 12 (note particularly FIGS. 4 and 6).
  • cylinder needles 14 are arranged in the usual manner so that they reciprocate vertically and parallel to each other, while the dial needles 12 are arranged so that they reciprocate to and fro along the radii which diverge from a common center. While FIG. 7 shows the dial needles 12 parallel to each other, this is merely for convenience of illustration, although the set-up on a V-bed flat machine would be quite similar to FIG. 7.
  • the needles have latches of the usual type, and the needles are assumed to turn counterclockwise when viewed from above, this being indicated by the arrows A in FIG. 7.
  • each cylinder/dial needle pair operates synchronously or simultaneously, and yarn ends 2: and y are first engaged by the needles of each cylinder/dial needle pair at approximately the same time.
  • needles. 12 have been designated 12a-12j and needles 14 have been lettered l4a-14j for clarity.
  • both needles are in their extended position beyond the yarn ends at and y, while needles 12b and 14b .have begun to retract and are grasping their respective yarn ends y and x.
  • the formation of the loop is completed by needles 12c-e and needles 14c-e.
  • Needles 12fj and l4f-j are returning to their extended position while their latches open to receive yarn from a subsequent feed, and with the newly formed loops being held on the shanks of the needle. It is emphasized that at yarn feeds utilizing auxiliary guide 20, only yarn end y is formed into loops, as successive dial needles 12 are withdrawn, yarn x being laid into the system on the hookopposite side of the dial needle shanks. The reverse is true with yarn end x in that only the cylinder needles 14 grasp yarn 1: since it is laid in on the hook-opposite side of the dial needle shanks.
  • Such patterns as Milano rib may therefore be produced without the use of successive yarn feeds to form the two-ply section, the reduction of a yarn feed per pattern repeat leading to a considerable increase in the productivity of the machine.
  • Other popular patterns including Ponti di Roma may also be formed with similar production increases.
  • the invention makes possible a variety of patterns not otherwise economically feasible, and thereby increases the versatility of the machine.
  • the first fabric pattern illustrated schematically in FIGS. 8 and 9 is popularly known as Milano rib and comprises alternating sections of single ply ribs with an intermediate section of double ply fabric therebetween in which the plies are completely separate and can be formed by the apparatus and method of this invention.
  • Milano rib The first fabric pattern illustrated schematically in FIGS. 8 and 9 is popularly known as Milano rib and comprises alternating sections of single ply ribs with an intermediate section of double ply fabric therebetween in which the plies are completely separate and can be formed by the apparatus and method of this invention.
  • a fabric produced by prior techniques necessitated the use of three feeds per repeat, as illustrated in FIG. 8, it is now possible to form the fabric utilizing a two feed repeat (FIG. 9), a resulting productivity of 50 percent.
  • the second fabric illustrated in FIGS. and 11 is popularly known as Ponte di Roma which, like the firstfabric, has twoply segments spaced walewise from each other throughout the fabric. As shown in FIG. 11, the two-ply segments can be formed at the same feed with a consequent increase in production and economy.
  • FIGS. 12 and 13 illustrate a third type of fabric construction comprising a single welt pattern having two-ply segments spaced walewise from each other.
  • the two-ply segments are advantageously formed at a single feed according to the present invention.
  • the present invention can be used in connection with the manufacture of other types of knit fabrics formed on circular machines of the type having two sets of needles, including double knit machines, conventional rib machines, interlock machines, sweater machines and the like.
  • the present invention is also applicable to the V-bed flat knitting machines.
  • the method according to the invention can be employed for the production of underwear, outerwear, swimwear, footwear and the like.
  • FIGS. 14 and 15 compare the prior art method and the present method of knitting a double welt variation of said third fabric.
  • a yarn gur e means positioned in operative relationship with a yarn feed of the knitting machine, said guide means including a first opening therein for receiving a first yarn from a supply source and directing said first yarn into knitting position on the hook-side of the shanks of all dial needles, but on the hook-opposite side of the shanks of the cylinder needles, said guide means also including a second opening therein for simultaneously receiving a second yarn from a supply source and directing said second yarn into knitting position on the hook-side of the shanks of all the cylinder needles, but on the hook-opposite side of the shanks of said dial needles, the yarn from said second opening being fed along a path which defines an angle exceeding the tangent to the cylinder formed by the cylinder needles taken at the point where the yarn is first engaged by the cylinder needles.
  • said guide means comprises a plate having said first and second openings therein, said plate being attached to a portion of said machine and being disposed in a vertical plane, said first opening in the plates positioned at a point below the horizontal plane defined by the dial needles and on the hook-side of said cylinder needle shanks, said second opening being inwardly disposed in a radial direction from the cylinder formed by the cylinder needles and on the hook-side of said dial needle shanks.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Knitting Of Fabric (AREA)
US27239A 1970-04-10 1970-04-10 Method and apparatus for forming a rib fabric having a two-ply section Expired - Lifetime US3672186A (en)

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US2723970A 1970-04-10 1970-04-10

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US (1) US3672186A (OSRAM)
AT (1) AT336160B (OSRAM)
BE (1) BE765458A (OSRAM)
CA (1) CA938119A (OSRAM)
CH (1) CH539712A (OSRAM)
DE (1) DE2117039A1 (OSRAM)
ES (1) ES390005A1 (OSRAM)
FR (1) FR2089529A5 (OSRAM)
GB (1) GB1341636A (OSRAM)
IE (1) IE35041B1 (OSRAM)
LU (1) LU62951A1 (OSRAM)
NL (1) NL7104479A (OSRAM)
SE (1) SE369083B (OSRAM)
ZA (1) ZA712087B (OSRAM)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990268A (en) * 1973-01-10 1976-11-09 I.W.S. Nominee Company Plush fabric knitting apparatus
US4019350A (en) * 1973-03-19 1977-04-26 Burlington Ag Method of producing double-knit fabric having additional fleece threads incorporated into one face or both faces thereof
US5048313A (en) * 1988-08-04 1991-09-17 Vignoni S.R.L. Circular knitting machines with thread guide having support cam for yarn
US5127241A (en) * 1989-06-22 1992-07-07 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Yarn feed arrangement with at least one yarn guide for a circular knitting machine
US20040089027A1 (en) * 2002-09-06 2004-05-13 Dietmar Traenkle Circular knitting machine having at least one moveable thread guide
US20120234052A1 (en) * 2011-03-15 2012-09-20 Nike, Inc. Method Of Manufacturing A Knitted Component
US20150315728A1 (en) * 2015-07-13 2015-11-05 Sung-Yun Yang Process of manufacturing fabrics having jacquard and terry patterns
US11478038B2 (en) 2011-03-15 2022-10-25 Nike, Inc. Article of footwear incorporating a knitted component
US12262791B2 (en) 2011-03-15 2025-04-01 Nike, Inc. Knitted footwear component with an inlaid ankle strand

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH612455A5 (OSRAM) * 1977-07-25 1979-07-31 Dubied & Cie Sa E
FR2568278B1 (fr) * 1984-07-27 1986-10-17 Eminence Sa Procede de tricotage de fils composites et produit textile obtenu selon ce procede
DE9305795U1 (de) * 1993-04-17 1994-08-25 Du Pont de Nemours International S.A., Le Grand-Saconnex, Genf/Genève Elastische Doppel-Rundstrickware
RU2163648C1 (ru) * 2000-03-28 2001-02-27 Курский государственный технический университет Двойной кулирный трикотаж
RU2167966C1 (ru) * 2000-06-20 2001-05-27 Московский государственный текстильный университет им. А.Н. Косыгина Двухслойный трикотаж
JP2003055866A (ja) * 2001-08-20 2003-02-26 Hakuryu Kikaisho Kofun Yugenkoshi 丸編み機の給糸器の構造
DE102014118217B4 (de) * 2014-12-09 2020-12-31 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Rundstrickmaschine
DE102018124616A1 (de) * 2018-10-05 2020-04-09 Hochschule Niederrhein Verfahren und Strickmaschine zur Herstellung der Strickware sowie Strickware

Citations (6)

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Publication number Priority date Publication date Assignee Title
DD48716A (OSRAM) *
US1722391A (en) * 1923-02-23 1929-07-30 Pfrommer Bruno Knitted fabric
US2067739A (en) * 1936-07-01 1937-01-12 Karo Knit Fabrics Inc Knitted fabric and method of making the same
GB488850A (en) * 1937-01-14 1938-07-14 Wilfred Reynolds Improvements in or relating to knitted fabrics and the production thereof
DE948003C (de) * 1952-08-05 1956-08-23 Bruno Pfrommer Doppelflaechige Strickware und Verfahren zu ihrer Herstellung
FR1579984A (OSRAM) * 1967-09-18 1969-08-29

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD48716A (OSRAM) *
US1722391A (en) * 1923-02-23 1929-07-30 Pfrommer Bruno Knitted fabric
US2067739A (en) * 1936-07-01 1937-01-12 Karo Knit Fabrics Inc Knitted fabric and method of making the same
GB488850A (en) * 1937-01-14 1938-07-14 Wilfred Reynolds Improvements in or relating to knitted fabrics and the production thereof
DE948003C (de) * 1952-08-05 1956-08-23 Bruno Pfrommer Doppelflaechige Strickware und Verfahren zu ihrer Herstellung
FR1579984A (OSRAM) * 1967-09-18 1969-08-29

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Lancashire, J. B. Jacquard Design And Knitting, 1969, National Knitted Outerwear Association, pp. 95 99. *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990268A (en) * 1973-01-10 1976-11-09 I.W.S. Nominee Company Plush fabric knitting apparatus
US4019350A (en) * 1973-03-19 1977-04-26 Burlington Ag Method of producing double-knit fabric having additional fleece threads incorporated into one face or both faces thereof
US5048313A (en) * 1988-08-04 1991-09-17 Vignoni S.R.L. Circular knitting machines with thread guide having support cam for yarn
US5127241A (en) * 1989-06-22 1992-07-07 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Yarn feed arrangement with at least one yarn guide for a circular knitting machine
US20040089027A1 (en) * 2002-09-06 2004-05-13 Dietmar Traenkle Circular knitting machine having at least one moveable thread guide
US6907758B2 (en) * 2002-09-06 2005-06-21 Sipra Patententwicklungs - Und Beteiligungsgesellschaft Mbh Circular knitting machine having at least one moveable thread guide
US20120234052A1 (en) * 2011-03-15 2012-09-20 Nike, Inc. Method Of Manufacturing A Knitted Component
US9060570B2 (en) * 2011-03-15 2015-06-23 Nike, Inc. Method of manufacturing a knitted component
US11421353B2 (en) 2011-03-15 2022-08-23 Nike, Inc. Knitted component and method of manufacturing the same
US11478038B2 (en) 2011-03-15 2022-10-25 Nike, Inc. Article of footwear incorporating a knitted component
US11859320B2 (en) 2011-03-15 2024-01-02 Nike, Inc. Knitted component and method of manufacturing the same
US12262791B2 (en) 2011-03-15 2025-04-01 Nike, Inc. Knitted footwear component with an inlaid ankle strand
US12297569B2 (en) 2011-03-15 2025-05-13 Nike, Inc. Knitted component and method of manufacturing the same
US20150315728A1 (en) * 2015-07-13 2015-11-05 Sung-Yun Yang Process of manufacturing fabrics having jacquard and terry patterns

Also Published As

Publication number Publication date
DE2117039A1 (de) 1971-10-21
NL7104479A (OSRAM) 1971-10-12
ZA712087B (en) 1971-12-29
BE765458A (fr) 1971-08-30
FR2089529A5 (OSRAM) 1972-01-07
ATA296971A (de) 1976-08-15
AT336160B (de) 1977-04-25
ES390005A1 (es) 1974-04-01
IE35041B1 (en) 1975-10-29
GB1341636A (en) 1973-12-25
IE35041L (en) 1971-10-10
SE369083B (OSRAM) 1974-08-05
CH539712A (de) 1973-07-31
CA938119A (en) 1973-12-11
LU62951A1 (OSRAM) 1971-08-26

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