EP1048770B1 - Latch needle with a latch mounted on a pivot bearing - Google Patents

Latch needle with a latch mounted on a pivot bearing Download PDF

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Publication number
EP1048770B1
EP1048770B1 EP00105150A EP00105150A EP1048770B1 EP 1048770 B1 EP1048770 B1 EP 1048770B1 EP 00105150 A EP00105150 A EP 00105150A EP 00105150 A EP00105150 A EP 00105150A EP 1048770 B1 EP1048770 B1 EP 1048770B1
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EP
European Patent Office
Prior art keywords
latch
latch needle
needle according
groove
depression
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
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EP00105150A
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German (de)
French (fr)
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EP1048770A1 (en
Inventor
Sigmar Majer
Bernhard Schuler
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Groz Beckert KG
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Groz Beckert KG
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Publication of EP1048770A1 publication Critical patent/EP1048770A1/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/04—Latch needles

Definitions

  • the invention relates to a latch needle with the features of the preamble of claim 1.
  • Tongue needles are used in knitting machines, for example.
  • Switch needles have a hook-shaped head, the a pivotally mounted tongue is assigned. This can swivel into a first position in which they are on the free End of the hook-shaped head, as well as in a second Position in which it is pivoted away from the head and releases the head.
  • the precise positioning of the tongue comes important in doing so.
  • the tongue has to run smoothly to be swung back and forth by low operating forces to be able to.
  • her tongue spoon when closing hits the hook of the latch needle. This must be about the Lifetime of the latch needle, and thus over many Work cycles away, remain ensured.
  • the tongue is stored on the latch needle in usually through a pin or axle pin through a Tongue hole provided in the tongue shaft engages.
  • a cheek area near the head formed which has a tongue slot.
  • Cheeks are provided on the sides of the tongue slot which a corresponding pin is formed or between which has a corresponding axle pin.
  • the tongue protrudes between the cheeks in the tongue slot and is mounted on the pin or axle pin.
  • Cheeks formed holes are different approaches known. For example. is from the US PS 3,526,104 and that belonging to the same patent family DE-OS 15 85 091 a latch needle with an inserted Axle pin known.
  • the holes used to receive the axle pin are provided in the cheek of the latch needle, are aligned with each other and are to the side faces of the Needle flared.
  • the axle pin used is formed by a piece of wire that at both ends is riveted so that convex rivet heads form.
  • the axle pin is provided by a separately and piece of wire inserted into the corresponding holes educated.
  • a latch needle is known from US Pat. No. 5,509,280 known for storing the tongue two diagonally adjacent, from the cheeks or cheeks half pins pushed out serve.
  • the half cones are asymmetrical with respect to the pivot axis of the tongue shaped.
  • the half cones are formed by the Cheeks plastic with an appropriate piercing tool be deformed. The penetration depth is along the Circumference of each peg is not constant, reducing the flow conditions of the material vary along the circumference.
  • half pin for storing a tongue on a latch needle plastic deformation of the cheeks on both sides of the tongue slot manufacture.
  • piercing tools used with a flat face.
  • the piercing tools have a cylindrical at their respective front ends Cutters with a flat end surface whose diameter is smaller than the diameter of the half pin to be produced.
  • the half-pegs form projections that go into the tongue slot protrude and reach into the tongue hole.
  • the resulting half-cones are permanent ensure precise positioning of the tongue
  • Tongue needles are also known from US-A-4020319 known with half-pins pressed out of the diaphragm wall, the latch needles outside in the area of the half-journals have corresponding depressions. These recesses each have a flat or concave arch Ground on. The ones pushed out of both side walls Pins are welded together. To achieve this, a laser welding process is specified.
  • the latch needle according to the invention points to the latching at least one generated by plastic deformation Projection on the tongue and in that Tongue hole one extending into the tongue slot Tongue sticks out.
  • the projection thus forms a pin or a half pin for storing the tongue.
  • On the side surface the needle is in the axial extension of the projection a depression available, at least in some areas has convex bottom. This convex bottom shape influences the material flow during formation or Forms of the lead positive. It will be this way possible to have a lead with only a slight bulge adjacent Areas of the inner flank of the tongue slot too produce. It also succeeds in the front surface of the To keep the projection relatively flat, so that for tongue storage serving surface area maximized in size can be.
  • the floor can be a continuous and uninterrupted Have a groove and otherwise curved or flat his.
  • the groove can be directly on the wall connect to the well. It is then radially outside arranged.
  • a stepped transition area is formed in the middle area.
  • This is a conical ring surface shaped.
  • the one provided in the bottom of the recess Ring groove can have a groove bottom and groove flanks that merge with a radius. That radius is preferably significantly smaller than half the groove width, preferably less than a third or a quarter of the Groove width.
  • the central region of the depression is preferred flat. However, it can also be concavely curved in some areas his. It is essential for the convex curvature according to the invention the bottom of the depression that an outdoor area is present which is inserted more deeply than a middle area. The outside area does not have to be coherent in a ring be trained.
  • the diameter of the depression is advantageous about the size of the diameter of the protrusion. However, it can also be useful to have something different To provide diameter.
  • the protrusion is formed from the respective cheek and preferably connected to it in one piece. This will separate the lead From the rest of the latch needle long operation prevented.
  • a tongue needle 1 is illustrated in detail in FIG. It has a shaft 2, which ultimately carries a hook-shaped head 3. Between the head 3 and the shaft 2 is a somewhat bulging section provided that forms a breast 4. This is used for attachment a tongue 5, which is shown in FIG Axis of rotation 6 is pivotally mounted. The tongue 5 engages with its tongue shaft 10 in a tongue slot 7, which penetrates the needle breast and in two side cheeks 8, 9 divided.
  • the Half pins 11, 12 For storing the tongue 5 around the transverse to the shaft 2 Aligned axis of rotation 6 (see Figure 2) serve half pin 11, 12, which are connected to the cheeks 8, 9.
  • the Half pins 11, 12 thus jointly form a bearing 13 for the tongue 5 and its tongue shaft 10, as in FIG. 3 can be seen.
  • This has a tongue hole 14 in the half pin 11, 12 from both flat sides of the tongue shaft 10 intervene here.
  • The is approximately in the middle Bearing surface 15 interrupted by a gap 16 in which the half pins 11, 12 closely adjacent with their end faces end to each other or abut each other.
  • the storage area 15 is thereby divided into individual partial areas 15a, 15b, where the partial surface 15a is the lateral surface of the half pin 11 and the partial surface 15b the lateral surface of the Half pin is 12.
  • the geometry is again shown in detail in FIG. 7 illustrated. Thereafter, the end face 17 is essentially formed plan and the partial surface 15a is essentially cylindrical. A transition area 21 between the end face 17 and the partial surface 15a has a certain Curvature or curvature. On an ideal cylinder shape a dashed illustrated in Figure 7 is missing Area 22. It is ideally very small or nonexistent.
  • the recess 24 is in axial Extension of the half pin 11 with a recess 24 formed essentially cylindrical outer surface 25.
  • the lateral surface has approximately the same diameter like the half pin 11.
  • the recess 24 has a bottom 26 with at least one further recess 20, i.e. on Middle region 27 is located on the periphery of the Floor 26 surrounding outer area 28 in front.
  • the location of the second depression 20 is in the edge region of the tongue hole 14 arranged.
  • the second recess 20 is an annular groove formed and has, as can be seen particularly in FIG. 7, a substantially flat groove bottom 29 on which is followed by a groove flank on the outside, which through the Shell surface or wall 25 can be formed.
  • the transition between the groove bottom 29 and the wall 25 formed by a curved surface area 31, the one has a relatively small radius.
  • a conical groove flank 32 (Ring surface) provided with a curved surface area 33 merges into the groove bottom 29.
  • the area area 33 is preferably also with a small radius of curvature curved.
  • the cheek 8 faces the tongue slot 7 Side of a substantially flat flank 36, which reaches up to the partial surface 15a of the half pin 11.
  • the tongue 5 is through the corresponding flanks of the tongue slot 7 so that they, although they can be pivoted with little friction about the axis of rotation 6 (FIG. 2), can hardly tip in the lateral direction.
  • the relatively large area Guiding the tongue 5 enables a permanent precise work. This also applies to the storage formed by the half pin 11, 12.
  • the storage area 15 is almost closed, i.e. the gap is 16 ideally zero.
  • the half pins 11, 12 are part of the cheeks 8, 9. They are due to plastic deformation of the cheeks 8, 9 educated.
  • the half pins 11, 12 can, if necessary, with their end faces 17, 18 are welded together. This can be done with the help of a laser beam that is in the recess 24 hits.
  • the half pins 11, 12 are preferably in relation to one another mirror-symmetrical, so that the above, on the half pin 11 related description equally the half pin 12 applies. In other embodiments there is no mirror-symmetrical structure of the half pin.
  • FIG Figure 5 Another form of the latch needle 1 not according to the invention is shown in FIG Figure 5 illustrates.
  • the difference to the embodiments according to Figures 3 and 4 is again in the Formation of the deepening 24.
  • the wall 25 of the depression is approximately cylindrical and agrees with the diameter of the partial surface 15a of the half pin 11 essentially coincide.
  • Deviating from the Embodiments described above is the bottom 26 of the depression, however, arched overall. His middle range 27 goes without a paragraph in the second recess 20 in Outside area 28, which is not a groove, but the Forms the edge of a spherically convex surface.
  • the Transition between the second recess 20 and the wall 25 is formed by the surface area 31, the one has a very small radius of curvature.
  • This one too Embodiment it is possible in the tongue slot 7 almost flat flanks 36 and almost cylindrical partial surfaces 15a, 15b on the half pin 11, 12 to get. in the the rest of the above description applies accordingly.
  • FIG Figure 6 Another embodiment of the latch needle 1 is shown in FIG Figure 6 illustrates.
  • This switch needle 1 differs essentially from the latch needle according to FIG by the width of the second recess 20, the depth their width exceeds.
  • This design also enables an almost cylindrical half pin 11, 12 each design, in which the bearing portion (partial surface 15a, 15b) of Bearing surface 15 relatively large, ideally equal to the tongue thickness and between the two partial surfaces 15a, 15b remaining gap 16 relatively narrow, ideally the same Is zero.
  • the half-cone succeeds 11, 12 each have a relatively sharp-edged transition between the end face 17 and the partial surface 15a or 15b to rent.
  • a latch needle has half-journals for storing its tongue 11, 12, which are formed on the latch needle.
  • the latch needle 1 is provided with a latch slot 7, which is delimited by two cheeks 8, 9. At each other are facing side surfaces of the cheeks 8, 9 Wells trained.
  • the through plastic deformation formed depressions produce protrusions or half-zappers 11 and 12, which in the tongue slot 7 and in the Tongue hole extending into the tongue slot 7 Tongue 5 protrude.
  • the bottom of the recess 24 has in its Edge area in the axial extension of a further depression 20 on. This form of the two-tiered deepening allows the formation of a relatively precise cylindrical Half pin 11, 12, so that the bearing portion of the through the two half journals 11, 12 defined bearing surface 15 is maximized.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Description

Die Erfindung betrifft eine Zungennadel mit den Merkmalen des Oberbegriffs des Patentanspruchs 1. Derartige Zungennadeln werden bspw. in Strickmaschinen verwendet.The invention relates to a latch needle with the features of the preamble of claim 1. Such Tongue needles are used in knitting machines, for example.

Zungennadeln weisen einen hakenförmigen Kopf auf, dem eine schwenkbar gelagerte Zunge zugeordnet ist. Diese kann in eine erste Stellung schwenken, in der sie an dem freien Ende des hakenförmigen Kopfs anliegt, sowie in eine zweite Stellung, in der sie von dem Kopf weg geschwenkt ist und den Kopf freigibt. Der präzisen Lagerung der Zunge kommt dabei eine große Bedeutung zu. Die Zunge muss leichtgängig sein, um durch geringe Betätigungskräfte hin- und hergeschwenkt werden zu können. Andererseits muss sie so genau geführt sein, dass sie mit ihrem Zungenlöffel beim Schließen den Haken der Zungennadel trifft. Dies muss über die Lebensdauer der Zungennadel, und somit über sehr viele Arbeitsspiele hinweg, sichergestellt bleiben.Switch needles have a hook-shaped head, the a pivotally mounted tongue is assigned. This can swivel into a first position in which they are on the free End of the hook-shaped head, as well as in a second Position in which it is pivoted away from the head and releases the head. The precise positioning of the tongue comes important in doing so. The tongue has to run smoothly to be swung back and forth by low operating forces to be able to. On the other hand, it has to be so precise be guided with her tongue spoon when closing hits the hook of the latch needle. This must be about the Lifetime of the latch needle, and thus over many Work cycles away, remain ensured.

Die Lagerung der Zunge an der Zungennadel erfolgt in der Regel durch einen Zapfen oder Achsstift, der durch ein in dem Zungenschaft vorgesehenes Zungenloch greift. An der Zungennadel ist in der Nähe des Kopfs ein Backenbereich ausgebildet, der einen Zungenschlitz aufweist. Zu beiden Seiten des Zungenschlitzes sind Wangen vorgesehen, aus denen ein entsprechender Zapfen geformt wird oder zwischen denen ein entsprechender Achsstift gelagert ist. Der Zungenschaft ragt zwischen die Wangen in den Zungenschlitz und ist auf dem Zapfen oder Achsstift gelagert.The tongue is stored on the latch needle in usually through a pin or axle pin through a Tongue hole provided in the tongue shaft engages. At the A latch needle is a cheek area near the head formed, which has a tongue slot. To both Cheeks are provided on the sides of the tongue slot which a corresponding pin is formed or between which has a corresponding axle pin. The tongue protrudes between the cheeks in the tongue slot and is mounted on the pin or axle pin.

Zur Ausbildung eines Zapfens zur Lagerung der Zunge oder zum Einsetzen des Stifts in entsprechende in den Wangen ausgebildete Löcher, sind unterschiedliche Vorgehensweisen bekannt geworden. Bspw. ist aus der US-PS 3.526.104 sowie der zur gleichen Patentfamilie gehörigen DE-OS 15 85 091 eine Zungennadel mit einem eingesetzten Achsstift bekannt. Die Löcher, die zur Aufnahme des Achsstifts in den Wangen der Zungennadel vorgesehen sind, fluchten miteinander und sind zu den Seitenflächen der Nadel hin konisch erweitert. Der eingesetzte Achsstift wird durch ein Drahtstück gebildet, das an beiden Enden vernietet wird, so dass sich konvex gewölbte Nietköpfe ausbilden. To form a pin for storing the tongue or to insert the pen into the corresponding one Cheeks formed holes are different approaches known. For example. is from the US PS 3,526,104 and that belonging to the same patent family DE-OS 15 85 091 a latch needle with an inserted Axle pin known. The holes used to receive the axle pin are provided in the cheek of the latch needle, are aligned with each other and are to the side faces of the Needle flared. The axle pin used is formed by a piece of wire that at both ends is riveted so that convex rivet heads form.

Der Achsstift wird durch ein separat bereitgestelltes und in die entsprechenden Löcher eingesetztes Drahtstück gebildet.The axle pin is provided by a separately and piece of wire inserted into the corresponding holes educated.

Darüber hinaus ist aus der US-PS 5.509.280 eine Zungennadel bekannt, bei der zur Lagerung der Zunge zwei schräg aneinander anschließende, aus den Wangen oder Backen herausgedrückte Halbzapfen dienen. Die Halbzapfen sind dabei bezüglich der Schwenkachse der Zunge asymmetrisch geformt. Die Halbzapfen werden gebildet, indem die Wangen mit einem entsprechenden Einstechwerkzeug plastisch verformt werden. Die Einstichtiefe ist dabei entlang des Umfangs jedes Zapfens nicht konstant, wodurch die Fließverhältnisse des Materials entlang des Umfangs variieren.In addition, a latch needle is known from US Pat. No. 5,509,280 known for storing the tongue two diagonally adjacent, from the cheeks or cheeks half pins pushed out serve. The half cones are asymmetrical with respect to the pivot axis of the tongue shaped. The half cones are formed by the Cheeks plastic with an appropriate piercing tool be deformed. The penetration depth is along the Circumference of each peg is not constant, reducing the flow conditions of the material vary along the circumference.

Außerdem ist es aus der DE-PS 608 619 bekannt, Halbzapfen zur Lagerung einer Zunge an einer Zungennadel durch plastische Verformung der Wangen beidseits des Zungenschlitzes herzustellen. Es werden dazu Einstechwerkzeuge mit ebener Stirnfläche verwendet. Die Einstechwerkzeuge weisen an ihrem jeweiligen vorderen Ende einen zylindrischen Stecher mit planer Endfläche auf, dessen Durchmesser kleiner ist als der Durchmesser des zu erzeugenden Halbzapfens.In addition, it is known from DE-PS 608 619, half pin for storing a tongue on a latch needle plastic deformation of the cheeks on both sides of the tongue slot manufacture. There are piercing tools used with a flat face. The piercing tools have a cylindrical at their respective front ends Cutters with a flat end surface whose diameter is smaller than the diameter of the half pin to be produced.

Die Halbzapfen bilden Vorsprünge, die in den Zungenschlitz ragen und in das Zungenloch greifen. Hier kommt es darauf an, dass die entstehenden Halbzapfen eine dauerhafte präzise Lagerung der Zunge sicherstellenThe half-pegs form projections that go into the tongue slot protrude and reach into the tongue hole. Here it comes to the fact that the resulting half-cones are permanent ensure precise positioning of the tongue

Aus der GB-A-1588410 sind Zungennadeln mit beweglich gelagerter Zunge bekannt, zu deren Lagerung zwei aus den Schlitzseitenwänden herausgedrückte Halbzapfen vorgesehen sind. An der Nadelaußenseite weisen die Halbzapfen jeweils eine von Drückstempeln hinterlassene Vertiefung auf, die am ringsum laufenden Rand tiefer ist als in einem mittleren Bereich. Die zugehörigen Drückstempel sind an ihrer Stirn jeweils konkav ausgebildet. Durch die so erreichte Schärfung der Umfangskante des jeweiligen Drückstempels werden die erforderlichen Drückkräfte verringert und die Zapfenform wird verbessert, indem die Konizität der entstehenden Zapfen vermindert wird.From GB-A-1588410 latch needles are also movable stored tongue known, for storage two from the Slotted sidewalls provided half pin are. The half pins each point on the outside of the needle an indentation left by stamps, the is deeper on the circumferential edge than in a middle one Area. The associated stamps are on hers Forehead each concave. Through the so achieved Sharpening the peripheral edge of the respective punch the necessary pushing forces are reduced and the Cone shape is improved by the taper of the resulting Cone is reduced.

Aus der US-A-4020319 sind darüber hinaus Zungennadeln mit aus der Schlitzwand herausgedrückten Halbzapfen bekannt, wobei die Zungennadeln außen im Bereich der Halbzapfen entsprechende Vertiefungen aufweisen. Diese Vertiefungen weisen jeweils einen ebenen oder konkav gewölbten Boden auf. Die aus beiden Seitenwänden herausgedrückten Zapfen sind miteinander verschweißt. Um dies zu erreichen, wird ein Laserschweißverfahren angegeben.Tongue needles are also known from US-A-4020319 known with half-pins pressed out of the diaphragm wall, the latch needles outside in the area of the half-journals have corresponding depressions. These recesses each have a flat or concave arch Ground on. The ones pushed out of both side walls Pins are welded together. To achieve this, a laser welding process is specified.

Davon ausgehend ist es Aufgabe der Erfindung, eine Zungennadel so zu gestalten, dass eine dauerhafte präzise Funktion der Zungennadel sichergestellt ist.Based on this, it is an object of the invention to To design a latch needle so that a permanent precise Function of the latch needle is ensured.

Die erfindungsgemäße Zungennadel weist zur Zungenlagerung wenigstens einen durch plastische Verformung erzeugten Vorsprung auf, der in den Zungenschlitz und in das Zungenloch einer sich in den Zungenschlitz erstreckenden Zunge ragt. Der Vorsprung bildet somit einen Zapfen oder einen Halbzapfen zur Lagerung der Zunge. An der Seitenfläche der Nadel ist in axialer Verlängerung des Vorsprungs eine Vertiefung vorhanden, die einen wenigstens bereichsweise konvexen Boden aufweist. Diese konvexe Bodenform beeinflusst den Materialfluss bei dem Herausbilden oder Formen des Vorsprungs positiv. Es wird auf diese Weise möglich, einen Vorsprung mit nur geringer Aufwölbung benachbarter Bereiche der Innenflanke des Zungenschlitzes zu erzeugen. Außerdem gelingt es dadurch, die Stirnfläche des Vorsprungs relativ flach zu halten, so dass die zur Zungenlagerung dienende Mantelfläche in ihrer Größe maximiert werden kann. Bei einer symmetrischen Bauform, bei der beide Wangen mit Vertiefungen und entsprechend mit Vorsprüngen versehen werden, die etwa in Zungenschlitzmitte aneinander stoßen oder miteinander einen Spalt festlegen, wird die in diesem Bereich vorhandene etwa ringförmige Unterbrechung der Lagerfläche minimiert. Dies ist unabhängig davon, ob die Vorsprünge (Halbzapfen) an ihren Stirnseiten miteinander verschweißt sind oder nicht. Die erreichte Maximierung der Lagerfläche und die geringe Deformation der Innenflanken des Zungenschlitzes gestatten eine dauerhafte präzise, d.h. spielarme, Zungenlagerung, so dass auch Zungennadeln, die sehr lange in Betrieb sind, mit hoher Präzision arbeiten. Dies wird letztendlich durch die konvexe Ausbildung des Bodens der in der Nadelseitenfläche vorhandenen Vertiefung ermöglicht. Dabei kommen prinzipiell unterschiedliche konvexe Formen in Betracht. Bspw. kann der Boden eine ringsumlaufende und ununterbrochene Nut aufweisen und ansonsten gewölbt oder plan ausgebildet sein. Es ist jedoch auch möglich, die Nut ein- oder mehrfach zu unterbrechen. Die Nut kann unmittelbar an die Wandung der Vertiefung anschließen. Sie ist dann radial außen angeordnet. Es ist jedoch auch möglich, sie etwas weiter innen anzuordnen und eine ringförmige Stufe zwischen der Wandung der Vertiefung und der Nut auszubilden.The latch needle according to the invention points to the latching at least one generated by plastic deformation Projection on the tongue and in that Tongue hole one extending into the tongue slot Tongue sticks out. The projection thus forms a pin or a half pin for storing the tongue. On the side surface the needle is in the axial extension of the projection a depression available, at least in some areas has convex bottom. This convex bottom shape influences the material flow during formation or Forms of the lead positive. It will be this way possible to have a lead with only a slight bulge adjacent Areas of the inner flank of the tongue slot too produce. It also succeeds in the front surface of the To keep the projection relatively flat, so that for tongue storage serving surface area maximized in size can be. With a symmetrical design, with both Cheeks with depressions and accordingly with protrusions are provided, which are approximately in the middle of the tongue slot butt or set a gap with each other the approximately ring-shaped interruption present in this area the storage area minimized. It is independent whether the protrusions (half pin) on their end faces are welded together or not. The reached Maximize storage space and minimize deformation the inner flanks of the tongue slot allow permanent precise, i.e. low backlash, tongue storage, so that also tongue needles that have been in operation for a very long time work with high precision. This will ultimately be done by the convex formation of the bottom of the in the needle side surface allows existing deepening. In principle come here different convex shapes. For example. the floor can be a continuous and uninterrupted Have a groove and otherwise curved or flat his. However, it is also possible to use the groove one or more times to interrupt. The groove can be directly on the wall connect to the well. It is then radially outside arranged. However, it is also possible to go a little further arrange inside and an annular step between the Form the wall of the recess and the groove.

Zwischen der am Außenumfang des Bodens der Vertiefung angeordneten Nut und dem plan oder gewölbt ausgebildeten Mittelbereich ist erfindungsgemäß ein stufenartiger Übergangsbereich ausgebildet. Dieser ist als konische Ringfläche geformt. Die in dem Boden der Vertiefung vorgesehene Ringnut kann einen Nutboden und Nutflanken aufweisen, die mit einem Radius ineinander übergehen. Dieser Radius ist vorzugsweise deutlich kleiner als die halbe Nutbreite, vorzugsweise geringer als ein Drittel oder ein Viertel der Nutbreite.Between the on the outer periphery of the bottom of the recess arranged groove and the flat or arched According to the invention, a stepped transition area is formed in the middle area. This is a conical ring surface shaped. The one provided in the bottom of the recess Ring groove can have a groove bottom and groove flanks that merge with a radius. That radius is preferably significantly smaller than half the groove width, preferably less than a third or a quarter of the Groove width.

Der Mittelbereich der Vertiefung ist vorzugsweise flach. Er kann jedoch auch bereichsweise konkav gewölbt sein. Wesentlich ist für die erfindungsgemäße konvexe Wölbung des Bodens der Vertiefung, dass ein Außenbereich vorhanden ist der tiefer eingestochen ist als ein Mittelbereich. Der Außenbereich muss nicht ringförmig zusammenhängend ausgebildet sein.The central region of the depression is preferred flat. However, it can also be concavely curved in some areas his. It is essential for the convex curvature according to the invention the bottom of the depression that an outdoor area is present which is inserted more deeply than a middle area. The outside area does not have to be coherent in a ring be trained.

Es hat sich als zweckmäßig herausgestellt, die Vertiefung mit einer im Wesentlichen zylindrischen Mantelfläche auszubilden. Der Durchmesser der Vertiefung ist vorteilhafterweise etwa so groß wie der Durchmesser des Vorsprungs. Es kann jedoch auch zweckmäßig sein, etwas unterschiedliche Durchmesser vorzusehen.It turned out to be useful, the deepening with an essentially cylindrical lateral surface train. The diameter of the depression is advantageous about the size of the diameter of the protrusion. However, it can also be useful to have something different To provide diameter.

Der Vorsprung ist aus der jeweiligen Wange herausgebildet und mit dieser vorzugsweise einstückig verbunden. Damit wird eine Trennung des Vorsprungs (Zapfens) von der übrigen Zungennadel auch nach langem Betrieb verhindert.The protrusion is formed from the respective cheek and preferably connected to it in one piece. This will separate the lead From the rest of the latch needle long operation prevented.

Weitere zweckmäßige Einzelheiten sind Gegenstand von Unteransprüchen, der Zeichnung und/oder der Beschreibung. In der Zeichnung sind Ausführungsformen der Erfindung veranschaulicht. Es zeigen:

  • Fig. 1 eine Zungennadel in einer schematisierten perspektivischen und ausschnittsweisen Darstellung,
  • Fig. 2 die Zungennadel nach Figur 1, in einer ausschnittsweisen Seitenansicht, in einem anderen Maßstab,
  • Fig. 3 bis Fig. 6 verschiedene Ausführungsformen von erfindungsgemäßen Zungennadeln, geschnitten entlang der Linie II-II, in Figur 2, und
  • Fig. 7 die Zungennadel nach Figur 3, in einem anderen Maßstab, in ausschnittsweiser Darstellung.
    • Further useful details are the subject of dependent claims, the drawing and / or the description. Embodiments of the invention are illustrated in the drawing. Show it:
  • 1 is a latch needle in a schematic perspective and partial representation,
  • 2 shows the tongue needle according to FIG. 1, in a partial side view, on a different scale,
  • 3 to 6 show different embodiments of latch needles according to the invention, cut along the line II-II in FIG. 2, and
  • Fig. 7, the latch needle of Figure 3, on a different scale, in a fragmentary representation.

    • In Figur 1 ist eine Zungennadel 1 im Ausschnitt veranschaulicht. Sie weist einen Schaft 2 auf, der letztendlich einen hakenförmigen Kopf 3 trägt. Zwischen dem Kopf 3 und dem Schaft 2 ist ein sich etwas aufwölbender Abschnitt vorgesehen, der eine Brust 4 bildet. Diese dient der Befestigung einer Zunge 5, die um eine aus Figur 2 ersichtliche Drehachse 6 schwenkbar gelagert ist. Die Zunge 5 greift mit ihrem Zungenschaft 10 in einen Zungenschlitz 7, der die Nadelbrust durchsetzt und in zwei seitliche Wangen 8, 9 unterteilt.A tongue needle 1 is illustrated in detail in FIG. It has a shaft 2, which ultimately carries a hook-shaped head 3. Between the head 3 and the shaft 2 is a somewhat bulging section provided that forms a breast 4. This is used for attachment a tongue 5, which is shown in FIG Axis of rotation 6 is pivotally mounted. The tongue 5 engages with its tongue shaft 10 in a tongue slot 7, which penetrates the needle breast and in two side cheeks 8, 9 divided.

    Zur Lagerung der Zunge 5 um die quer zu dem Schaft 2 ausgerichtete Drehachse 6 (siehe Figur 2) dienen Halbzapfen 11, 12, die mit den Wangen 8, 9 verbunden sind. Die Halbzapfen 11, 12 bilden somit gemeinsam eine Lagerung 13 für die Zunge 5 und deren Zungenschaft 10, wie aus Figur 3 ersichtlich ist. Dieser weist ein Zungenloch 14 auf, in das die Halbzapfen 11, 12 von beiden Flachseiten des Zungenschafts 10 her eingreifen. Die Halbzapfen 11, 12 definieren dabei gemeinsam eine im Wesentlichen zylindrische Lagerfläche 15, deren Durchmesser etwas geringer ist als der Durchmesser des Zungenlochs 14. Etwa mittig ist die Lagerfläche 15 durch einen Spalt 16 unterbrochen, bei dem die Halbzapfen 11, 12 mit ihren Stirnseiten eng benachbart zueinander enden oder aneinander anliegen. Die Lagerfläche 15 ist dadurch in einzelne Teilflächen 15a, 15b unterteilt, wobei die Teilfläche 15a die Mantelfläche des Halbzapfens 11 und die Teilfläche 15b die Mantelfläche des Halbzapfens 12 ist.For storing the tongue 5 around the transverse to the shaft 2 Aligned axis of rotation 6 (see Figure 2) serve half pin 11, 12, which are connected to the cheeks 8, 9. The Half pins 11, 12 thus jointly form a bearing 13 for the tongue 5 and its tongue shaft 10, as in FIG. 3 can be seen. This has a tongue hole 14 in the half pin 11, 12 from both flat sides of the tongue shaft 10 intervene here. Define the half pins 11, 12 together a substantially cylindrical Bearing surface 15, the diameter of which is slightly less than the diameter of the tongue hole 14. The is approximately in the middle Bearing surface 15 interrupted by a gap 16 in which the half pins 11, 12 closely adjacent with their end faces end to each other or abut each other. The storage area 15 is thereby divided into individual partial areas 15a, 15b, where the partial surface 15a is the lateral surface of the half pin 11 and the partial surface 15b the lateral surface of the Half pin is 12.

    Die Geometrie ist im Einzelnen nochmals in Figur 7 veranschaulicht. Danach ist die Stirnfläche 17 im Wesentlichen plan ausgebildet und die Teilfläche 15a ist im Wesentlichen zylindrisch. Ein Übergangsbereich 21 zwischen der Stirnfläche 17 und der Teilfläche 15a weist eine gewisse Krümmung oder Wölbung auf. An einer idealen Zylinderform fehlt ein in Figur 7 gestrichelt veranschaulichter Bereich 22. Er ist idealerweise sehr kleine oder nicht vorhanden.The geometry is again shown in detail in FIG. 7 illustrated. Thereafter, the end face 17 is essentially formed plan and the partial surface 15a is essentially cylindrical. A transition area 21 between the end face 17 and the partial surface 15a has a certain Curvature or curvature. On an ideal cylinder shape a dashed illustrated in Figure 7 is missing Area 22. It is ideally very small or nonexistent.

    Wie aus den Figuren 3 und 7 hervorgeht, ist in axialer Verlängerung des Halbzapfens 11 eine Vertiefung 24 mit im Wesentlichen zylindrischer Mantelfläche 25 ausgebildet. Die Mantelfläche weist etwa den gleichen Durchmesser auf wie der Halbzapfen 11. Die Vertiefung 24 hat einen Boden 26 mit wenigstens einer weiteren Vertiefung 20, d.h. ein Mittelbereich 27 steht über einen an der Peripherie des Bodens 26 umlaufenden Außenbereich 28 vor. Die Lage der zweiten Vertiefung 20 ist im Randbereich des Zungenlochs 14 angeordnet. Die zweite Vertiefung 20 ist als Ringnut ausgebildet und weist, wie insbesondere aus Figur 7 hervorgeht, einen im Wesentlichen ebenen Nutboden 29 auf, an den sich außen eine Nutflanke anschließt, die durch die Mantelfläche bzw. Wandung 25 gebildet sein kann. Der Übergang zwischen dem Nutboden 29 und der Wandung 25 wird durch einen gewölbten Flächenbereich 31 gebildet, der einen relativ geringen Radius aufweist.As can be seen from Figures 3 and 7, is in axial Extension of the half pin 11 with a recess 24 formed essentially cylindrical outer surface 25. The lateral surface has approximately the same diameter like the half pin 11. The recess 24 has a bottom 26 with at least one further recess 20, i.e. on Middle region 27 is located on the periphery of the Floor 26 surrounding outer area 28 in front. The location of the second depression 20 is in the edge region of the tongue hole 14 arranged. The second recess 20 is an annular groove formed and has, as can be seen particularly in FIG. 7, a substantially flat groove bottom 29 on which is followed by a groove flank on the outside, which through the Shell surface or wall 25 can be formed. The transition between the groove bottom 29 and the wall 25 formed by a curved surface area 31, the one has a relatively small radius.

    Zwischen dem Nutboden 29 der zweiten Vertiefung 20 und dem Mittelbereich 27 ist eine konische Nutflanke 32 (Ringfläche) vorgesehen, die mit einem gewölbten Flächenbereich 33 in den Nutboden 29 übergeht. Der Flächenbereich 33 ist vorzugsweise ebenfalls mit einem geringen Krümmungsradius gekrümmt. Between the groove bottom 29 of the second depression 20 and the central region 27 is a conical groove flank 32 (Ring surface) provided with a curved surface area 33 merges into the groove bottom 29. The area area 33 is preferably also with a small radius of curvature curved.

    Die Wange 8 weist an ihrer dem Zungenschlitz 7 zugewandten Seite eine im Wesentlichen plane Flanke 36 auf, die bis an die Teilfläche 15a des Halbzapfens 11 heranreicht. Die Zunge 5 ist durch die entsprechenden Flanken des Zungenschlitzes 7 geführt, so dass sie, obwohl sie reibungsarm um die Drehachse 6 (Figur 2) schwenkbar ist, in Seitenrichtung kaum kippen kann. Die relativ großflächige Führung der Zunge 5 ermöglicht dabei ein auf Dauer präzises Arbeiten. Dies gilt auch im Hinblick auf die durch die Halbzapfen 11, 12 gebildete Lagerung. Die Lagerfläche 15 ist nahezu geschlossen, d.h. der Spalt 16 ist idealerweise gleich Null.The cheek 8 faces the tongue slot 7 Side of a substantially flat flank 36, which reaches up to the partial surface 15a of the half pin 11. The tongue 5 is through the corresponding flanks of the tongue slot 7 so that they, although they can be pivoted with little friction about the axis of rotation 6 (FIG. 2), can hardly tip in the lateral direction. The relatively large area Guiding the tongue 5 enables a permanent precise work. This also applies to the storage formed by the half pin 11, 12. The storage area 15 is almost closed, i.e. the gap is 16 ideally zero.

    Die Halbzapfen 11, 12 sind Bestandteil der Wangen 8, 9. Sie sind durch plastische Deformation der Wangen 8, 9 ausgebildet. Die Halbzapfen 11, 12 können bedarfsweise mit ihren Stirnflächen 17, 18 miteinander verschweißt werden. Dies kann mit Hilfe eines Laserstrahls erfolgen, der in die Vertiefung 24 trifft.The half pins 11, 12 are part of the cheeks 8, 9. They are due to plastic deformation of the cheeks 8, 9 educated. The half pins 11, 12 can, if necessary, with their end faces 17, 18 are welded together. This can be done with the help of a laser beam that is in the recess 24 hits.

    Die Halbzapfen 11, 12 sind vorzugsweise zueinander spiegelsymmetrisch aufgebaut, so dass die vorstehende, auf den Halbzapfen 11 bezogene Beschreibung gleichermaßen auf den Halbzapfen 12 zutrifft. Bei anderen Ausführungsformen liegt kein spiegelsymmetrischer Aufbau der Halbzapfen vor.The half pins 11, 12 are preferably in relation to one another mirror-symmetrical, so that the above, on the half pin 11 related description equally the half pin 12 applies. In other embodiments there is no mirror-symmetrical structure of the half pin.

    Während bei der im Zusammenhang mit den Figuren 3 und 7 veranschaulichten Ausführungsform der Zungennadel 1 die Breite der zweiten Vertiefung 20 im Außenbereich 28 seine Tiefe übertrifft und die Nutflanke 32 konisch ausgebildet ist, weichen die Verhältnisse bei der in Figur 4 veranschaulichten nicht erfindungsgemäßen Form der Zungennadel 1 davon etwas ab. Die zweite Vertiefung 20 im Außenbereich 28 weist einen etwa quadratischen Querschnitt auf und die Nutflanke 32 ist somit eine Zylinderfläche. Es ist jedoch auch möglich, die Nutbreite größer oder kleiner als deren Tiefe zu bemessen. Ansonsten gelten die im Zusammenhang mit den Figuren 3 und 7 getroffenen Ausführungen. Die zweite Vertiefung 20 im Außenbereich 28 ermöglicht die Erzeugung von Halbzapfen 11, 12 mit nahezu zylindrischer Form, so dass die Größe der Lagerfläche 15 maximiert wird.While in connection with Figures 3 and 7 illustrated embodiment of the latch needle 1 Width of the second recess 20 in the outer region 28 its Depth exceeds and the groove flank 32 is conical the conditions are the same as that illustrated in FIG form of the latch needle 1 not according to the invention something of it from. The second depression 20 in the outer area 28 has one approximately square cross-section and the groove flank 32 is thus a cylindrical surface. However, it is also possible the groove width is larger or smaller than their depth sized. Otherwise apply in connection with the Figures 3 and 7 made statements. The second specialization 20 in the outer area 28 enables the generation of Half pin 11, 12 with an almost cylindrical shape, so that the size of the storage area 15 is maximized.

    Eine weitere nicht erfindungsgemäße Form der Zungennadel 1 ist in Figur 5 veranschaulicht. Der Unterschied zu den Ausführungsformen nach den Figuren 3 und 4 liegt wiederum in der Ausbildung der Vertiefung 24. Wie bei den vorstehenden Ausführungsformen ist die Wandung 25 der Vertiefung etwa zylindrisch und stimmt mit dem Durchmesser der Teilfläche 15a des Halbzapfens 11 im Wesentlichen überein. Entsprechendes gilt für den Halbzapfen 12. Abweichend von den vorstehend beschriebenen Ausführungsformen ist der Boden 26 der Vertiefung jedoch insgesamt gewölbt. Sein Mittelbereich 27 geht absatzlos in die zweite Vertiefung 20 im Außenbereich 28 über, der insofern keine Nut, sondern den Rand einer sphärisch konvex gewölbten Fläche bildet. Der Übergang zwischen der zweiten Vertiefung 20 und der Wandung 25 ist durch den Flächenbereich 31 gebildet, der einen sehr kleinen Krümmungsradius aufweist. Auch bei dieser Ausführungsform ist es möglich, in dem Zungenschlitz 7 nahezu ebene Flanken 36 und nahezu zylindrische Teilflächen 15a, 15b an den Halbzapfen 11, 12 zu erhalten. Im übrigen gilt die vorstehende Beschreibung entsprechend.Another form of the latch needle 1 not according to the invention is shown in FIG Figure 5 illustrates. The difference to the embodiments according to Figures 3 and 4 is again in the Formation of the deepening 24. As with the above In embodiments, the wall 25 of the depression is approximately cylindrical and agrees with the diameter of the partial surface 15a of the half pin 11 essentially coincide. The same applies to the half pin 12. Deviating from the Embodiments described above is the bottom 26 of the depression, however, arched overall. His middle range 27 goes without a paragraph in the second recess 20 in Outside area 28, which is not a groove, but the Forms the edge of a spherically convex surface. The Transition between the second recess 20 and the wall 25 is formed by the surface area 31, the one has a very small radius of curvature. This one too Embodiment, it is possible in the tongue slot 7 almost flat flanks 36 and almost cylindrical partial surfaces 15a, 15b on the half pin 11, 12 to get. in the the rest of the above description applies accordingly.

    Eine weitere Ausführungsform der Zungennadel 1 ist in Figur 6 veranschaulicht. Diese Zungennadel 1 unterscheidet sich von der Zungennadel nach Figur 3 im Wesentlichen durch die Breite der zweiten Vertiefung 20, deren Tiefe ihre Breite übersteigt. Auch diese Bauform ermöglicht es, einen jeweils nahezu zylindrischen Halbzapfen 11, 12 zu gestalten, an dem der Traganteil (Teilfläche 15a, 15b) der Lagerfläche 15 relativ groß, idealerweise gleich der Zungendicke ist und der zwischen beiden Teilflächen 15a, 15b verbleibende Spalt 16 relativ eng, idealerweise gleich Null ist. Mit anderen Worten, es gelingt, den Halbzapfen 11, 12 jeweils einen relativ scharfkantigen Übergang zwischen der Stirnfläche 17 und der Teilfläche 15a bzw. 15b zu verleihen.Another embodiment of the latch needle 1 is shown in FIG Figure 6 illustrates. This switch needle 1 differs essentially from the latch needle according to FIG by the width of the second recess 20, the depth their width exceeds. This design also enables an almost cylindrical half pin 11, 12 each design, in which the bearing portion (partial surface 15a, 15b) of Bearing surface 15 relatively large, ideally equal to the tongue thickness and between the two partial surfaces 15a, 15b remaining gap 16 relatively narrow, ideally the same Is zero. In other words, the half-cone succeeds 11, 12 each have a relatively sharp-edged transition between the end face 17 and the partial surface 15a or 15b to rent.

    Eine Zungennadel weist zur Lagerung ihrer Zunge Halbzapfen 11, 12 auf, die an der Zungennadel angeformt sind. Die Zungennadel 1 ist dazu mit einem Zungenschlitz 7 versehen, der von zwei Wangen 8, 9 begrenzt wird. An den voneinander weg weisenden Seitenflächen der Wangen 8, 9 sind Vertiefungen ausgebildet. Die durch plastische Verformung gebildeten Vertiefungen erzeugen Vorsprünge bzw. Halbzapren 11 und 12, welche in den Zungenschlitz 7 und in das Zungenloch einer sich in den Zungenschlitz 7 erstreckenden Zunge 5 ragen. Der Boden der Vertiefung 24 weist in seinem Randbereich in axialer Verlängerung eine weitere Vertiefung 20 auf. Diese Form der zweifach gestuften Vertiefung ermöglicht die Ausbildung eines relativ präzise zylindrischen Halbzapfens 11, 12, so dass der Traganteil der durch die beiden Halbzapfen 11, 12 festgelegten Lagerfläche 15 maximiert wird.A latch needle has half-journals for storing its tongue 11, 12, which are formed on the latch needle. To this end, the latch needle 1 is provided with a latch slot 7, which is delimited by two cheeks 8, 9. At each other are facing side surfaces of the cheeks 8, 9 Wells trained. The through plastic deformation formed depressions produce protrusions or half-zappers 11 and 12, which in the tongue slot 7 and in the Tongue hole extending into the tongue slot 7 Tongue 5 protrude. The bottom of the recess 24 has in its Edge area in the axial extension of a further depression 20 on. This form of the two-tiered deepening allows the formation of a relatively precise cylindrical Half pin 11, 12, so that the bearing portion of the through the two half journals 11, 12 defined bearing surface 15 is maximized.

    Claims (15)

    1. Latch needle (1)
      with a head (3), which has an associated pivoting latch (5), and with a needle throat (4), which is provided with a sawslot (7) configured between two cheeks (8, 9),
      wherein the latch (5) has a latch blade (6), which is provided with a latch hole (14) and extends into the sawslot (7),
      with at least one bearing journal (13), which is formed from at least one projection (11, 12), which is configured from one of the cheeks (8, 9) by plastic deformation and which is disposed in the latch hole (14),
      wherein the cheek (8, 9) contains a depression (24), the at least one projection (11, 12) being formed from the material thereof,
      wherein the depression (24) has a base (26) with an annular outer region (28) and a central region (27), the depression (24) having a greater depth in the annular outer region (28) than in the central region (27),
      characterised in that
      a step-like transition region with a conical ring surface (32) is arranged between the central region (27) and the outer region (28).
    2. Latch needle according to Claim 1, characterised in that the depression (24) has an essentially cylindrical wall (25).
    3. Latch needle according to Claim 1, characterised in that the annular outer region (28) has a cohesive configuration.
    4. Latch needle according to Claim 1, characterised in that the central region (27) is plane.
    5. Latch needle according to Claim 1, characterised in that the central region (27) is arched.
    6. Latch needle according to Claim 1, characterised in that the width of the annular outer region (28) exceeds its depth.
    7. Latch needle according to Claim 1, characterised in that the annular outer region (28) is an annular groove with groove base (29) and groove flanks (25, 32), and that an arched surface region (31, 33), the radius of curvature of which is less than half the groove width, is respectively provided in the transition from the groove base (29) to the groove flank (25, 32).
    8. Latch needle according to Claim 1, characterised in that the annular outer region (28) is an annular groove with groove base (29) and groove flanks (25, 32), and that an arched surface region (31), the radius of curvature of which is less than a third, preferably a quarter, of the groove width, is respectively provided in the transition from the groove base (29) to the groove flank (25, 32).
    9. Latch needle according to Claim 1, characterised in that the depth of the depression (24) measured in the central region (27) corresponds essentially to the height of the projection (11, 12).
    10. Latch needle according to Claim 1, characterised in that the journal (10) is formed by two projections (11, 12) forming the journal halves respectively connected to one of the cheeks (8, 9).
    11. Latch needle according to Claim 10, characterised in that the journal halves define a cylindrical shell face (15), which is a bearing face for the latch (5).
    12. Latch needle according to Claim 10, characterised in that the journal halves have essentially plane end faces (17, 18), which preferably touch one another.
    13. Latch needle according to Claim 1, characterised in that the end faces (17, 18) are arranged essentially parallel to the cheeks (8, 9).
    14. Latch needle according to Claim 1, characterised in that the projection (11, 12) has a diameter, which is essentially the same as the diameter of the depression (24).
    15. Latch needle according to Claim 1, characterised in that the projection (11, 12) is connected in one piece to the cheek (8, 9).
    EP00105150A 1999-04-01 2000-03-10 Latch needle with a latch mounted on a pivot bearing Expired - Lifetime EP1048770B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19914928A DE19914928C2 (en) 1999-04-01 1999-04-01 Latch needle with a tongue supported on a pin
    DE19914928 1999-04-01

    Publications (2)

    Publication Number Publication Date
    EP1048770A1 EP1048770A1 (en) 2000-11-02
    EP1048770B1 true EP1048770B1 (en) 2004-07-28

    Family

    ID=7903292

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00105150A Expired - Lifetime EP1048770B1 (en) 1999-04-01 2000-03-10 Latch needle with a latch mounted on a pivot bearing

    Country Status (5)

    Country Link
    US (1) US6209360B1 (en)
    EP (1) EP1048770B1 (en)
    JP (1) JP2000303332A (en)
    DE (2) DE19914928C2 (en)
    ES (1) ES2220278T3 (en)

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    TWI744856B (en) * 2020-04-09 2021-11-01 大康織機股份有限公司 Reed tooth

    Family Cites Families (11)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE608619C (en) * 1935-01-28 Torrington Co Method of manufacturing knitting machine needles
    CA681690A (en) * 1964-03-10 C. Oberem William Welded integral bearing for knitting machine latch needles
    US1961429A (en) * 1931-06-15 1934-06-05 Torrington Co Latch needle and method of making the same
    US1991140A (en) * 1934-02-28 1935-02-12 Acme Knitting Machine & Needle Knitting machine needle
    US3022651A (en) * 1958-02-26 1962-02-27 Torrington Co Integral offset bearing for latch of knitting needle
    GB1098578A (en) * 1965-12-08 1968-01-10 Grieve & Company Ltd T Improvements in and relating to latch needles
    FR1499561A (en) * 1966-10-28 1967-10-27 Grieve & Company Ltd T Pressed rivet nose needle
    US3850011A (en) * 1972-06-23 1974-11-26 Torrington Co Latch pivot for latch needle
    US4020319A (en) * 1974-02-07 1977-04-26 The Torrington Company Method of forming a knitting needle latch pivot
    GB1588410A (en) * 1977-12-13 1981-04-23 Needle Industries Ltd Latched needles
    DE4402706C1 (en) * 1994-01-29 1995-06-08 Groz & Soehne Theodor Simply mfd., abrasion-resistant, long-life latchet needle

    Also Published As

    Publication number Publication date
    ES2220278T3 (en) 2004-12-16
    DE19914928C2 (en) 2001-05-23
    JP2000303332A (en) 2000-10-31
    US6209360B1 (en) 2001-04-03
    EP1048770A1 (en) 2000-11-02
    DE50007170D1 (en) 2004-09-02
    DE19914928A1 (en) 2000-10-05

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