MXPA01002371A - Adjustable plating yarn carrier assembly for knitting plated fabric - Google Patents

Abstract

An adjustable plating yarn carrier (1) having two yarn guides (32, 34) allowing for the adjustment of the angle between two yarns (H, S) and the angles of both yarns to the needle (N), for the knitting of plated fabric, is provided.

Description

TWO-WIRE DIFFERENT CARRIER MOUNTING ADJUSTABLE FOR A TWO-WIRE WOVEN FABRIC.

BACKGROUND OF THE INVENTION This invention relato a yarn carrier for a uniform woven apparatus for woven fabrics with two different yarns.

DESCRIPTION OF THE PREVIOUS TECHNIQUE The term "fabric with two threads" means the feeding of two threads simultaneously to the needles of a weaving apparatus in such a way that they are two turns per stitch, one of each thread. These turns are placed so that one turn is on one side of the stitch and the other turn on the other side. The threads can be either contrasting in color or have different fibrous compositions. For example, it is not unusual to weave a thread, also called "resistant" (like nylon) with an elastomeric thread, or "soft". A suitable "soft" yarn is an elastomeric yarn manufactured and marketed by E.l. du Pont de Nemours and Company under the trademark Lycra ©. In a flat stitch, therefore, there is a predominant color or type of fibrous composition on one side, and the other color or fibrous composition REF. DO NOT. 127288 predominant on the other side. On one side of the fabric, where both the front and reverse turns occur in the same course, the colors or fibrous compositions will appear on both sides of the fabric; the front turns show a color or a fibrous composition and the reverse turns show the other color or the predominant fibrous composition. The effect of the fabric with two different threads is obtained by ensuring that the two different threads of the fabric are fed to the needles at an angle, normally in the range of between fifteen to forty-five degrees (15 ° and 45 °), measured from from the point on the inner surface of the needle where the two threads meet. This angle may depend on several factors, including the type of the two threads to be woven for a fabric, the structure of the stitch fabric, the measurement of the machine, the size of the hook needle or the shape and density of the stitch. This angle may also be potentially important to ensure that the yarn woven with another yarn (usually the elatoric yarn) is placed in such a way that it does not lose the point of the needle hook when it is supposedly captured by the needle. This is especially important during the weaving of the first course of a woven fabric for sweater wherein sometimes the yarn does not exist in the needle stem to close the hook of the needle and whereby the elastomeric yarn is captured. While the angle is smaller, there is a greater chance of capturing the thread to be woven with another thread through the needle. One means to achieve this is to delay the downward movement (the wire capture step) of the needle. This can be achieved by modifying the needle protection device and the stitch cam, increasing the width of the protection cam.

BRIEF DESCRIPTION OF THE INVENTION The present invention is directed to a carrier for driving a first and second wires to a needle with an angle α to be defined between the wires and to a weaving apparatus including this carrier. The carrier comprises a first guide member and a second guide member. Each guide member has a tip through which a thread distribution passage extends. The step defines thread deflection surfaces in each guide. The threads that come out from the ends of the thread at the ends of each of the yarn passages are guided towards a needle.

The first guide member and the second guide member are relatively movable relative to each other in a first direction to adjust the space between the ends of the steps and thereby adjust the angle between the wires. One of the first and second guide members is also relatively movable with respect to the other in a second direction, whereby the relative position on the needle occupied by the first and second wires is adjusted. In a particular case the first direction is generally parallel to a longitudinal reference axis extending through the carrier, while the second direction is generally transverse to the longitudinal reference axis.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood from the following detailed description taken in relation to the attached drawings, which form a part of this application, and wherein: Figures 1 and 2 are, respectively, the views in lateral elevation and front of a yarn carrier for a weaving apparatus according to the first embodiment of this invention, with a portion of Figure 2 shown partially in section, while Figure 1A is an enlarged front section view of a portion of a wire guide of the carrier of Figure 1; Figure 3 is a front elevational view of a yarn carrier for a weaving apparatus according to a second embodiment of this invention; Figure 4 is a rear perspective view of the carrier of Figure 3; Figure 5 is a side elevational view, partly in section, of the yarn carrier of Figure 3 generally taken along lines 5-5 therein; Figure 6 is an enlarged view of a portion of Figure 5; Figures 7A to 7D are stylized diagrammatic views illustrating the relative positions of the strong and soft yarns in the needle hook; and Figures 8A and 8B are, respectively, a cam plate of the prior art and a modified cam plate found particularly useful with the yarn carrier of the present invention.

DETAILED DESCRIPTION OF THE INVENTION During the following detailed description, similar reference characters refer to similar elements in all figures of the drawings.

Figures 1 and 2 are, respectively, a side and front elevation view of a wire carrier generally indicated by the reference character 10 according to the first embodiment of the present invention. The yarn carrier 10 is used to guide the yarns to the needles of a uniform woven apparatus. Various portions of a normal tissue apparatus are stylistically illustrated in the figures to allow a clearer understanding of the structure of the carrier 10 and the relationship of the structure and movements of the portions of the carrier 10 with respect to the tissue apparatus. A normal uniform tissue apparatus includes a plurality of tissue needles N. As seen in Figure 2, the tissue needles N are normally placed in the front and rear needle arrangements generally indicated by the reference characters 14, 16, respectively. Each knitting needle N in the front needle array 14 is individually extensible and retractable in a first plane 18, while each needle in the rear needle array 16 is extensible and retractable in a second plane 20. Like any given needle that is extends and retracts in its respective plane, captures the two different threads that are presented to it. The first and second planes 16, 20 interconnect to define an intersection line 24 (Figure 2) that extends transversely through the weaving apparatus. The back and front planes 18, 20 define an angle 26 therebetween. It is convenient for defining purposes to define within the apparatus a predetermined reference plane. Probably the most convenient plane to be used as the reference plane is the plane 28 which bisects the angle 26 between the needle planes 18, 20 and which includes the intersecting line 24 which extends transversely. The reference plane 28 is visible as well as the line in the plane of Figure 2. The yarn carrier 10 includes a first yarn guide member 32 and a second guide member 34. Each yarn guide member 32, 34 , includes a guide portion generally in the form of a dome 32G, 34G with an integral mounting flange portion 32F, 34F respectively. Each flange portion 32F, 34F has an opening 32S, 34S formed therein for the following purpose. The guide portion 32G, 34G of each wire guide member 32, 34 terminates at a respective tip 32T34T. The tip of the guide member 34 has a synthetic gem support 34J, like a sapphire, placed therein. A wire passage 32Y (Figure 2), 34Y (Figure 1A), extends through the tip 32T, 34T of each respective wire guide member 32, 34. The regions of the wire passages 32, 34 in the proximity of the intersection of the surface of each tip 32T, 34T and its corresponding yarn pitch 32Y, 34Y, define an oval or circular yarn deflection surface 32D, (Figure 2), 34D (Figure 1A), respectively. Each yarn deflection surface 32D, 34D deflects a yarn passing through the given yarn passage 32Y, 34Y toward the needle N. A mounting bracket generally indicated by the reference character 38 leads to the first and second guiding members of wire 32, 34. In the embodiment of Figures 1 and 2, the bracket 38 takes the generally L-shape which is connected at one end by a screw 40 to a transverse mechanism T of the weaving apparatus from which the thread carrier 10 is part It should be noted in the embodiment of the invention shown in Figures 1 and 2 that the flange portion 34F of the second guide member 34 is directly mounted to the second end of the bracket 38, while the first wire guide member 32 is directly mounted. to the second guide member 34. Any convenient connection can be used. For example, the guide member 34 can be retained to the bracket 30 by a wide-head screw 42 which extends through the opening 34S in the flange 34F. When the screw 42 is screwed into a cavity 38R in the bracket 38, the lower part of the screw 42 frictionally couples the second guide member 34 against the bracket 38. A similar arrangement can be used to secure the first and second guide members 32, 34. A screw 46 (Figure 2) extends through the opening 32S in the flange portion 32F of the first guide member 32 in threaded engagement with a cavity 34R in the second guide member 34. The lower part of the head of the screw 46 frictionally couples the first guide member 32 against the second guide member 34. A first thread for weaving with another thread, such as a "resistant" thread "H", is supplied to the first guide of yarn 32 through a porcelain grommet 48. The resistant yarn H is illustrated in the drawings as a relatively thick line. The eyelet 48 is supported by an arm 48A. The arm 48A is rotatably adjustable with respect to the bracket 38 during the execution of the carrier 10. The arm 48A normally remains fixed while the carrier 10 is in use. The first thread H is routed through the eyelet 48 towards an access opening 32A (Figure 2) located on the back surface of the first yarn guide 32. The yarn H passes from the guide portion 32G of the yarn guide 32 through the passage 32Y at the tip 32T thereof. The yarn H is deflected against a contact point on the deflection surface 32D as the yarn H leaves the first yarn guide 32 towards the needle N. As the carrier 10 is transverse to the weaving apparatus, the resistant yarn H deviates against Different contact points on the deviation surface 32D. A second yarn for knitting with another yarn, such as a "soft" or elastomeric yarn S, is supplied to the second yarn guide 34 on a pulley 52. The yarn S is illustrated in the drawings as a relatively thin line. The pulley 52 travels on a synthetic gem support (not visible) carried in a housing 54. The housing 54 is rotatably mounted to the second guide member 34 by means of a screw 54S. The second thread S is directed by the pulley 52 to the guide portion 34G of the yarn guide 34. As the soft yarn S exits, the step 34Y at the tip of the second yarn guide 34 is deflected against a point contact on the deflection surface 34D of the synthetic gem support 34J towards the needle N. Similar to the situation with the guide 32, since the carrier 10 is transverse to the weaving apparatus, the soft yarn S is deflected against different contact points on the deflection surface 34D towards the needle N. The synthetic low-friction gem support 34J is supplied at minimized frictional forces as the soft yarn S passes from the passage 34Y in the yarn carrier 34 to the needle N, as discussed in US Pat. No. 5,931,023, issued on August 3, 1999 on behalf of Ernesto Branch and assigned to the assignee of the present invention . As can be seen in Figures 1 and 2, the points, or locations, on the deflection surfaces 32D, 34D where the respective wires H, S, exit from the ends of the passages 32Y, 34Y at the respective tips 32T, 34T of the yarn guides 32, 34, are illustrated separated from each other at a distance D. The distance D between the yarn exit points at the ends of the passages 32Y, 34Y at the tips 32T, 34T can be measured with respect to any desired reference data. A convenient reference data is a reference axis 10A extending longitudinally through the attached wire guide members 32, 34. The term "longitudinally" means that the axis 10A extends generally parallel to the extended direction of the carrier 10. The prolonged direction can be considered the general direction where the threads H, S pass through the thread guides 32, 34, or the direction of the carrier 10 as it moves towards and apart from the line of intersection 24. The axis 10A is preferably defined to remain perpendicular to the line of intersection 24. The defined axis 10A may, but not necessarily, remain in the reference plane 28. The exit point of the wire at the end of the passage 32Y at the tip 32T of the The first yarn guide 32 remains at a first distance Ex from the lower edge 38E of the bracket 38, and at a second distance E from the intersection line 24. The yarn exit point e n the end of the passage 32Y at the tip 34T in the second wire guide 34 is spaced at a first distance Fx from the lower edge 38E of the bracket 38, and remains at a second distance F2 from the line of intersection 24. The distances The f E, F_ and F: are convenient measurements along the reference axis 10A. As noted above, for a successful two-thread weave with a strong thread H and a soft thread S, requires that the two different wefts for weaving H, S show a convenient angular relationship between them. Only yarns that are appropriately oriented in space will be properly joined by the knitting needle N and will occupy the convenient relative positions on the needle hook necessary for a convenient two-wire weave. As seen in Figure 1, the wires H, S must define a predetermined angle ZR between them. Normally the angle ZR remains in the range of between fifteen and forty-five degrees (15 ° and 45 °). As a corollary, each thread H and S also defines an angle Zh, Zs, each respectively measured from an appropriate reference data, such as a line indicated in the Figures by the reference character L originating at point Q on the inner surface of the needle N where the threads H, S meet the needle N and where they extend parallel to the line of intersection 24. However, as a practical matter, variations in the tissue operation may arise, due to the yarns, fabric structures, machine measurements, needle hook size or stitch shape or density. Any of these variations can change the value of the angle ZR that is necessary to produce a fabric with two different suitable threads. The yarn carrier 10 according to this invention is structured to allow the yarn guides 32, 34 to be relatively movable with each other and for other characteristics of the wearer. As it develops, these relative movements impart to the bearer 10 the ability to selectively adjust the angles Zh, Zs respectively defined between each of the threads H, S and the line L passing through the point Q on the needle N, as well as the relative angle ZR defined with respect to each other. From the observation of Figure 1, it can be seen that the angle ZR between the wires H, S can be adjusted in a variety of ways. More directly, the angle ZR can be modified by adjusting the distance D between the respective tips 32T, 34T of the yarn guides 32, 34. Alternatively, if the distance D is kept constant, the angle ZR can be adjusted by: (1) adjusting the angle Zh between the resistant thread H and the reference data L; and / or (2) adjusting the angle Zs between the soft wire S and the reference data L. The structure of the carrier 10 of the present invention is capable of achieving each of these adjustments. The first guide member 32 and the second guide member 34 are relatively movable relative to each other.

To adjust the distance D between the yarn exit points in the steps 32Y, 34Y and the respective tips 32T, 34T of the yarn guides 32, 34, the screw 46 is loosened, and the first yarn guiding member yarn 32 moves in the directions indicated by arrow 58. The direction of relative movement 58 between yarn guides 32, 34 is generally parallel to axis 10A. By relatively moving the yarn guides 32, 34 together, the distance D is increased or decreased, dependent on the direction of movement. The relative upward or downward movement between the yarn guides 32, 34 (in the directions of the arrow 58) results in the increase or decrease respectively (as measured against the axis 10A) of the angle ZR between the yarns H, S. It should be noted that although the relative movement of the thread guides is illustrated as a rectilinear motion, it is not necessarily limited. The guides 32, 34 can be rotated, helically, pivotally or along any desired path, as long as the movement results in the distance D between the point of exit of the wire at the ends of the passages 32Y, 34Y at the tips 32T , 34T and the relative angle ZR between the yarns H, S is decreased or increased. Although in the embodiment illustrated in FIGS. 1 and 2, the guide member 34 is relatively movable with respect to the bracket 38, it should be noted that this relationship it is not necessary to change the distance D.

While the yarn guides 32, 34 are relatively movable in each other, it is not required that one of the yarn guides be relatively movable with respect to the bracket. Therefore, if desired, the adjustable connection provided by the releasable screw 42 between the guide 34 and the bracket 38 can be omitted, and the guide 34 secured securely to the bracket 38. This fixed connection between these members is schematically indicated by connection 59 (Figure 2). The ability to move the guide member 34 with respect to the bracket 38 facilitates the adjustment of the angle Zh and between the resistant wire H and the reference data (line L). The relative movement of the member 34 with respect to the bracket 38 in a direction of the arrow 60 (generally parallel to the reference axis 10A) directly serves to adjust the distance Fi between the yarn exit point at the end of the step 34Y in the point 34T on the guide member 34 and the bracket 38 and the distance F2 between the thread exit point at the end of the passage 34Y at the tip 34T and the intersection line 24. As a result of the relative movement between the guide 34 and the bracket 38, the angle Zs between the soft wire S and the line L, is directly varied.

It should be noted that since the first guide member 32 is mounted to the second guide member 34, the movement of the guide 34 is carried with the guide 32. Therefore, the movement of the guide member 34 with respect to the bracket 38 to change the angle Zs also has the side effects of changing the distance Ei (between the bracket 38 and the thread exit point at the end of the passage 32Y at the tip 32T of the guide member 32) and the distance E2 (between the point of exit of the thread at the end of the passage 32Y at the tip 32T and the intersection line 24), and the variation of the angle Zh between the resistant thread H and the line L. It was observed that since the guide member 32 it is also movably mounted to the member 34, any necessary compensation adjustment can be made by adjusting the member 32 with respect to the member 34. It should be readily appreciated that the connection of the members can be reversed. That is, the first guide member 32 can be a guide member that is movably mounted to the bracket, with the second guide member 34 either fixedly or movably mounted to the first member 32. This alternative structure can facilitate the direct adjustment of the distances E_, E2 and of the angle Zh, with the adjustment of the distances F_, F_ and the angle Zs as a secondary effect.

The embodiment of Figures 3-7 illustrates an alternative structure wherein the first guide member 32 is directly connected to the bracket 38. In summary, it is appreciated from the foregoing that the wire carrier 10 of the present invention wherein the guides of yarn 32, 34 are movable relative to each other and with respect to the bracket 38, allows the adjustment of the angle ZR between the resistant yarn H and the soft yarn S, as well as the adjustment of the angles Zh, Zs between the resistant yarn H and the yarn. soft thread S in relation to the line L through the needle N. Figures 3 to 7 illustrate a second mode of the. 10 'wire carrier according to the present invention. The structural elements and relationships corresponding to those analyzed in relation to Figures 1 and 2 are indicated with prime reference characters. It should be clear that the embodiment of the invention shown in Figures 3 to 7 is desired to provide a more robust structure with respect to that shown in Figures 1 and 2. Furthermore, the embodiment of the invention shown in Figures 3 to 7 it provides another degree of freedom of relative movement between the guides 32 ', 34' which still allows further refinement to adjust the feed angles of the yarns to the knitting needles N.

In the yarn carrier 10 'shown in Figures 3 to 7, the bracket 38' generally includes a C-shaped clamp member 38C having a base 38B 'from which a pair of securing arms 38A' extend. The ends of each securing arm 38A 'are inclined to each other to define clamping flanges 38F'. As best seen in Figure 3, one of the arms 38A 'has an access opening 38G' therein. Opening 38G 'defines work surfaces 38W for a purpose described later. The base 38B 'of the clamp 38C is welded or otherwise suitably secured (as indicated by the dotted area with number 37' of Figure 5) to one end of a handle 38L 'generally L-shaped. The second end of handle 38L 'has an elongated opening 38S' therein. A screw 40 'passes through the opening 38S' at the second end of the handle 38L which adjustably secures the bracket 38 'to the transverse mechanism T of the weaving apparatus. The yarn guide 32 'for the resistant yarn H is modified from the structure shown in Figures 1 and 2. In the embodiment of Figures 3 to 6, the yarn guide 32' includes a pair of panels 32P 'which they extend upwardly from the elongated flange portion 32F '. The panels 32P 'and the surface of the flange portion 32F' cooperate to define a channel 32C extending axially over a portion of the yarn guide 32 '. The upper edge of one of the panels 32P 'has an array of teeth spaced 33 therein, for a purpose described later. The yarn guide 34 'for the soft yarn S is also modified from the corresponding structure shown in Figures 1 and 2. In the embodiment of Figures 3 to 6, in the yarn guide 34', there is a grooved member. , generally tubular, slidably received, telescopically, within the channel 32C formed in the wire guide 32 '. As seen in the drawings, the lower end of the yarn guide 34 'has the synthetic gem support 34J' therein extending axially further from the panels 32P 'in the guide 32'. The side walls 34S 'of the yarn guide 34' extend over the edges of the yarn guide 32 '. The upper edge of the side wall 34S 'near the toothing 33 in the guide 32' also has an array of spaced teeth 35 provided therein. The spaces between the teeth 35 in the guide 34 'are larger than the corresponding spaces between the spaces between the teeth 33 in the guide 32'. This discrepancy in the spacing of the teeth results in the teeth in the guides moving between them, for a purpose that becomes clearer in the present. To mount the carrier 10 ', the yarn guide 32 ', having the yarn guide 34' therein, slidably and telescopically extends through the bracket 38 '. As seen from Figure 5, a spring 39 is captured between the handle 38L 'of the bracket 38' and the lower surface of the flange portion 32F 'of the yarn guide 32'. The force of the spring 39 acts through the yarn guide 32 'to deflect the upper edges of the side walls 34S' in the yarn guide 34 'against the fastening flanges 38F' in the securing arms 38A '. The threaded screws 41 act to jointly extract the arms 38A 'from the clamp 38C whereby the wire guide members 32', 34 'are secured in the described relationship within the bracket 38'. The heads of the screws 41 are located on one side of the bracket 38 'apart from the path of the resistant thread H. Each thread for a fabric of two different threads is supplied to its thread guide in a manner generally similar to that described in relation to Figures 1 and 2. The resistant yarn H is supplied to the tip of the yarn guide 32 'through the eyelet 48'. The wire H enters the guide portion of the guide member 32 'through the access opening 32A' located on the back surface of the first wire guide 32 '(Figure 4). The yarn H passes through the passage 32Y 'at the tip 32T' and deviates towards the needle N. The soft yarn S (Figure 3) is directed on the pulley 52 'and passes through the central channel of the yarn guide 34 'to the tip 34T'. As the soft yarn S leaves the step 34Y in the synthetic gem support 34J 'at the tip 34T', it deflects towards the needle N. The angles Zh, Zs defined respectively by the resistant and soft yarns with respect to the line of the data L and the relative angle ZR defined between the resistant thread H and the soft thread S, are as described in relation to Figures 1 and 2. The angle ZR is adjusted by varying the distance D between the exit points of the yarn at the ends of the passages 32Y ', 34Y' at the tips 32T ', 34T' in the respective yarn guides 32 ', 34'. First, the clamping force imposed by the threaded screws 41 is released. The guides 32 ', 34' are prevented from falling from the bracket 38 'by the clamping force imposed by the deviation of the spring 39. Once the force of If the holder is released, the guide member 32 'can move with respect to the guide 34' in the direction of the arrows 58 'to vary the distance D. Again, the direction of movement of the guide 32 is generally parallel to the axis 10A1 of the thread guides attached. The guide 32 'is rectilinearly moved with respect to the guide 34' by inserting a lever lifting implement, such as a flat blade actuator, into the spaces between the toothed displacement 33, 35 provided in the guides 32 ', 34', respectively . The action of levering the implement against a toothing 33 in the guide 32 '(using a toothing 35 in the guide 34' as a point of support) moves the guide 32 'with respect to the guide 34'. This remains within the scope of this invention to alter the structure of the carrier 10 'to allow on the other hand the rectilinear movement between the guides 32', 34 'to alter the distance D and the angle ZR. To alter the angles Zh and Zs, without adjusting the distance D, the guide member 32 'can move with respect to the bracket 38' in the direction of the arrows 60 '. Once the clamping force is released, the implement can be inserted into the space between the teeth 33 in the guide 32 'which are accessible through the opening 38G' in the arm 38A 'of the bracket 38'. The action of levering the implement against the work surfaces 38W causes the guide member 34 'to move relative to the bracket 38'. It was noted that the guides 32 ', 34' can be moved in one direction by the lever of the implement against the lower edge of the lower arm 38A '. Nevertheless, the relative movement of the guides 32 ', 34' in the opposite direction will not be possible without the presence of the work surface 38W at the upper edge of the lower arm 38A '. As noted above, the embodiment of the invention shown in Figures 3 to 6 includes a structure that allows additional adjustment in feeding the yarns to the knitting needles N. In general, the first and second guiding members 32 ' 34 'are also relatively movable relative to each other in a second direction indicated by arrows 68A, 68B for moving the yarn exit point at the end of the passage at the tip of one of the yarn guides towards or apart from the reference plane 28. As this action develops, the relative position of a needle occupied by the first and second threads is adjusted. The drive mechanism for effecting this relative movement of the thread guides in the second directions 68A, 68B includes a threaded thumb screw 62, having an elongated head 62H, extending through the lower end of the first guide 32 '. . The end 62E of the thumbscrew 62 engages the rear surface of the flange 34F 'of the first guide 34'. The manipulation of the head 62H advances the end 62E of the thumbscrew 62 in the direction of the arrow 67. The advancement of the thumbscrew 62 exerts a force on the lower end of the guide 34 'to cause it to deviate in relation to the to the guide 32 'against the deflection of the spring 39 in a direction 68A. The address 68A is generally perpendicular to the plane containing the directions 58 ', 60'. In addition, the other guide 32 'also moves relatively with respect to the guide 34' in the opposite direction 68B, also generally perpendicular to the plane containing the directions 58 ', 60'. When the butterfly screw 62 retracts to the restored force generated by the spring 39, the guides 32 ', 34' return to their original positions in relation to one another. The imposition of a deflection force at the lower end of the guide 34 'moves the latter relative to the first guide 32'. This is moved to the point of exit of the thread at the end of the passage 34Y 'at the tip 34T' of the guide 34 'towards or apart from the bisection reference plane 28. As a result the relative position of the wires H, S in the hook of the needle N. In the case illustrated in Figures 7A and 7B, the soft yarn S can be repositioned from its initial position where the yarns meet or close relative to each other to a second position where the yarns they are relatively distant from each other. Once the yarns H, S are adjusted to each other by virtue of the movement of the guides 32 ', 34' in the directions 68A, 68B, the location of the yarns H, S with respect to the hook of the needle N can be adjusted by the total movement of the carrier 10 'with respect to the transverse mechanism T. Therefore, as suggested in Figures 7C and 7D, once the threads H, S are positioned with each other as desired by the action of the thumbscrew 62 (Figure 7C), the screw 40 'is loosened and the complete carrier 10' can be repositioned in the transverse mechanism T in the directions 72. This latter repositioning has the effect of adjusting the positioning of the relatively positioned yarns from a point initial "1" on the hook of the needle N (Figure 7C) to a second point "2" on the hook of the needle N (Figure 7D). This ability to adjust the yarn S of the fabric in two yarns with respect to the resistant yarn H inside the hook of the needle is advantageous when the bead stitching is necessary, as, for example, in the cuff bands and in the bands of the waist of the needle. a woven dress. It should be noted that in Figures 5 and 6, the tip 34T 'of the' guide 34 'travels along an arcuate path as it moves in the direction of the arrows 68 towards or apart from the plane 28. However, this remains within the contemplation of this invention to modify the structure of the port 10 'such that the tip 34' can move along a rotating, curvilinear or rectilinear trajectory. Any convenient mechanism can be used to move the tip 34T 'of the guide 34' along any given path to or away from the reference plane 28. The carriers 10, 10 'as described herein can be made of any suitable material that has sufficient strength to be subjected to constant use in the vicinity of a high-speed weaving apparatus. However, the mass of the carrier can also be considered in the selection of materials. Steel is the material of choice for the embodiment of Figures 3 to 6.

Figures 8A and 8B illustrate respectively, stylistically, the portions of a cam plate of the prior art and a modified cam plate found particularly useful with the yarn carrier 10, 10 'of the present invention. The prior art cam plate 80 includes a protective cam 82 having a needle return surface 84. The two surfaces 84 are symmetrically disposed with respect to the vertical center line VCL of the cam 82 to reciprocate the tissue action , as appreciated by those skilled in the art. The needle return includes a transition portion 86 that bears, at the end point 86T, a stitch cam surface 88. As illustrated, the inclination of the needle return surface 84 abruptly changes at the entry point 86E of the transition region 86. In operation, assuming that the cam plate 80 and the yarn carrier 10, 10 'are transversely to the weaving apparatus in the direction of the arrow 92, as the end of a needle travels as far as possible. Along the longer length of the needle return surface 84, each needle N retracts in its needle plane in downward direction 94. As a needle N finds the entry point 86E in the cam, the hook of the needle N is slidably positioned over the yarns for the fabric in two yarns H, S. When the needle N reaches the end point 86t of the transition region 86, the two fabric yarns H, S are already captured on the hook of needle Due to the relatively excessive inclination of the surface of the transition region 86, the cam plate crosses a relatively short linear distance 95 during the thread catching operation. At the time of the yarn capture, the conveyor 10, 10 'is spaced at a transverse distance 96 from the needle N. In this distance the yarn defines a relatively excessive entry angle 98 with respect to the needle N. In some cases , even when the angle ZR between the wires H, S has been adjusted appropriately by the operation of the carrier 10, 10 ', the slope of the entry angle 98 can prevent the capture of the soft thread. Figure 8B illustrates a portion of a cam plate 100 that is convenient for overcoming the problems associated with the excessive entry angle and is therefore especially useful with the carrier 10, 10 'of the present invention. As in the prior art, the cam plate 100 includes the needle return surfaces 104 that are symmetrically positioned with respect to the vertical centerline VCL of the cam 100. The needle return surface has a starting point 104E that usually it remains in the vertical center line VCL. The end of the needle return surface 104 includes a transition region 106 extending between the points 106E, 106T. In the cam 100 illustrated in FIG. 8B, the transition region 106 of the needle return surface 104 smoothly tilts toward the stitch cam surface 108. The transition surface 106 may be smoothly tilted linearly or arching. In practice, with a cam plate 100, the linear distance 110 of the transition portion 106 (as measured in the direction of movement 92 of the cam 100 between the entry and end points 106E, 106T) is in the range of fifteen at forty-five percent (15% to 45%) of the linear distance 112 between the starting point 104E of the needle return surface 104 (in Figure 8B, the vertical centerline VCL) and the point 106T (as was measured in the same direction), depending on the measurement of the tissue device. More particularly, the linear distance 110 is in the range of thirty to forty five percent (30% to 45%) of the linear distance 112, depending on the measurement of the weaving apparatus.

In operation, it is again assumed that the cam plate 100 and the yarn carrier 10, 10 'are transverse to the weaving apparatus in the direction of the arrow 92. When the needle N finds the entry point 106E on the cam 100, the hole of the needle N is slidably placed on the yarns for the two-thread fabric H, S, at point 114. When the needle N reaches the end point 106T of the transition region 106, the yarns of the fabric to two H, S threads have already been captured on the needle hook. However, due to the slight inclination of the transition region 106, the needle is at the level of the point 114, so that when the thread is captured, the cam plate 100 can cross a relatively larger linear distance 115, which is possible with a cam of the prior art. Therefore, at the time of capture of the yarn, the carrier 10, 10 'is spaced at a relatively greater transverse distance 116 from the needle N. At this distance 116, the yarns H, S define a relatively low input angle 118. with respect to the needle N. From the foregoing, it can be appreciated that the yarn carrier according to any embodiment of the present invention allows the adjustment of the angles of the yarns as they exit the yarn carrier towards the knitting needles. As the ability of the needles to capture the yarns is believed to be improved, however there are still factors such as whether the weaving apparatus is an electronic or manual weaving machine, the measurement of the machine, the weight of the yarn, the structure of the fabric, the size or shape of the hook, and the density of the stitch. Those skilled in the art have the benefit of the teachings of the present invention indicated above and can make the modifications thereto. Any of these modifications are encompassed within the scope of the present invention, as defined by the appended claims. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects or products to which it refers. Having described the invention as above, property is claimed as contained in the following:

Claims (38)

1. A carrier for driving a first and second thread to a needle with an angle defined between the wires, the carrier characterized in that it comprises: a first guide member and a second guide member, each guide member having a distribution step from the ends of where a thread is able to be guided towards a needle; the first guide member and the second guide member are relatively movable relative to each other in a first direction to adjust the space between the ends of the steps and whereby the angle between the wires is adjusted.

2. The wire carrier according to claim 1, characterized in that the one of the first and second guide members is received slidably and telescopically within the other guide member.

3. The wire carrier according to claim 2, characterized in that each of the first and second guide members have an array of teeth spaced therein, the spacing between the teeth is of sufficient size to receive a lever implement for moving a guide member with each other.

4. The wire carrier according to claim 1, characterized in that it additionally comprises: a bracket; one of the first and second guide members to be fixed to the bracket, the other of the first and second guide members being movable in the first direction with respect to the fixed guide member.

5. The wire carrier according to claim 1, characterized in that it additionally comprises: a bracket; one of the first and second guide members that movably connects to the bracket, the other of the first and second guide members that is movable in the first direction with respect to the guide member that movably connects to the bracket.

6. The wire carrier according to claim 1, characterized in that one of the first and second guide members is also relatively movable with respect to the other in a second direction, whereby the relative position on the needle occupied by the first ones is adjusted. and second threads.

7. The yarn carrier according to claim 6, characterized in that the other yarn carrier includes a drive screw member engaging the relatively movable member, the advancing drive screw member moving the movable member in the second direction.

8. The wire carrier according to claim 4, characterized in that one of the first and second guide members is also relatively movable with respect to the other in a second direction, whereby the relative position of the needle occupied by the first ones is adjusted. and second threads.

9. The yarn carrier according to claim 8, characterized in that the other yarn carrier includes a drive screw member engaging the relatively movable member, the advancing drive screw member moving the movable member in the second direction.

10. The wire carrier according to claim 5, characterized in that one of the first and second guide members is also relatively movable with respect to the other in a second direction, whereby the relative position of the needle occupied by the first ones is adjusted. and second threads

11. The yarn carrier according to claim 10, characterized in that the other yarn carrier includes a drive screw member engaging the relatively movable member, the advancing drive screw member moving the movable member in the second direction.

12. The wire carrier according to claim 1, characterized in that the carrier has a longitudinal reference axis extending therethrough, and wherein the first direction is generally parallel to the longitudinal reference axis.

13. The wire carrier according to claim 12, characterized in that one of the first and second guide members is also relatively movable with respect to the other in a second direction generally transverse to the longitudinal reference axis, whereby the relative position is adjusted of the needle occupied by the first and second threads.

14. A carrier for driving a first and second wire to a needle with an angle defined between the wires, the carrier characterized in that it comprises: a bracket; a first and a second guide member, each guide member having a thread distribution passage from the ends at which a wire is able to be guided towards a needle; wherein one of the first or second members is movably mounted to the bracket while the other of the guide members is mounted to the movably mounted guide member, a guide member is movable in a first direction with respect to the bracket to adjust the spacing between the end of the passage in the movable guide member and in the bracket, whereby the angle between the wires is adjusted.

15. The carrier assembly according to claim 14, characterized in that one of the first and second guide members is also relatively movable with respect to the other in a second direction, whereby the relative position on the needle occupied by the first and second ones is adjusted. second thread

16. The yarn carrier according to claim 15, characterized in that the other yarn carrier includes a drive screw member engaging the relatively movable member, the advancing drive screw member moving the movable member in the second direction.

17. The wire carrier according to claim 15, characterized in that the one of the first and second guide members is slidably received within the bracket.

18. The wire carrier according to claim 17, characterized in that the one of the first and second guide members carries an array of teeth spaced therein, the space between the teeth is of sufficient size to receive a lever implement for moving a guide member with respect to the bracket.

19. In a weaving apparatus having a first and second needle array, each needle in the first array is extensible and retractable in a first plane, each needle in the second array is extensible and retractable in a second plane, the first and second planes intersect to define an intersecting line that extends transversely through the weaving apparatus, the weaving apparatus characterized in that it has a carrier assembly for driving a first and second yarn to each of the needles at an angle defined between the yarns , the carrier comprises: a first guide member and a second guide member, each guide member having a wire distribution passage from the ends at which a wire is able to be guided towards the needle; wherein the improvement comprises: the first guide member and the second guide member which are relatively movable relative to each other in a first direction to adjust the space between the ends of the steps as measured in a direction perpendicular to the line of intersection and whereby the angle between the threads is adjusted.

20. The weaving apparatus according to claim 19, characterized in that one of the first and second guide members is slidably and telescopically received within the other guide member.

21. The weaving apparatus according to claim 20, characterized in that each of the first and second guide members carries an array of teeth spaced therein, the space between the teeth is of sufficient size to receive a lever implement for moving one guide member with respect to the other.

22. The weaving apparatus according to claim 19, characterized in that it additionally comprises: a transverse mechanism; a bracket for connecting the wire carrier to the transverse mechanism; one of the first and second guide members is fixed to the bracket, the other of the first and second guide members movably movably with respect to the fixed guide member.

23. The weaving apparatus according to claim 19, characterized in that it additionally comprises: a transverse mechanism; a bracket for connecting the wire carrier to the transverse mechanism; one of the first and second guide members is movably connected to the bracket; the other of the first and second guide members is movable in the first direction with respect to the guide member that movably connects to the bracket.

24. The tissue apparatus according to claim 19, characterized in that the first and second needle planes define an angle therebetween, a reference plane extending between the needle planes defined in the tissue apparatus, the reference plane includes a transversely extending intersecting line, wherein the improvement further comprises: one of the first and second guide members that is also relatively movable relative to the other in a second direction to move the passage of the movable guide member toward or apart from the reference plane whereby the relative position of the needle occupied by the first and second threads is adjusted.

25. The weaving apparatus according to claim 24, characterized in that the other thread carrier includes a drive screw member that engages the relatively movable member, the advancing drive screw member moves the movable member in the second direction.

26. The tissue apparatus according to claim 22, characterized in that the first and second needle planes define an angle therebetween, a reference plane extending between the needle planes defined in the tissue apparatus, the reference plane includes a transversely extending intersecting line, wherein the improvement further comprises: one of the first and second guide members that is also relatively movable relative to the other in a second direction to move the passage of the movable guide member toward or apart from the reference plane whereby the relative position of the needle occupied by the first and second threads is adjusted.

27. The weaving apparatus according to claim 26, characterized in that the other thread carrier includes a drive screw member that couples the relatively movable member, the advance of the drive screw member moves the movable member in the second direction.

28. The tissue apparatus according to claim 23, characterized in that the first and second needle planes define an angle therebetween, a reference plane extending between the needle planes defined in the tissue apparatus, the reference plane includes the intersecting line that extends transversely. wherein the improvement further comprises: one of the first and second guide members is also relatively movable with respect to the other in a second direction to move the passage in the movable guide member towards the reference plane whereby the position is adjusted relative to the needle occupied by the first and second threads.

29. The weaving apparatus according to claim 28, characterized in that the other thread carrier includes a drive screw member that couples the relatively movable member, the advancement of the drive screw member moves the movable member in the second direction.

30. The weaving apparatus according to claim 19, characterized in that the carrier has a longitudinal reference axis extending therebetween, and wherein the first direction is generally parallel to the longitudinal reference axis.

31. The weaving apparatus according to claim 26, characterized in that it additionally comprises a cam plate having a needle return surface with a starting point thereon, the needle return surface includes a transition region extending between the entry point and an end point, the proportion of (i) the linear distance between the entry point and an end point of the transition region and (ii) the linear distance between the point of beginning of the area of Needle return and the end point of the transition surface is in the range of fifteen to forty five percent (15% to 45%).

32. The weaving apparatus according to claim 30, characterized in that the first and second needle planes define an angle therebetween, a reference plane extends between the needle planes defined in the tissue apparatus, the reference plane includes the intersecting line that extends transversely, in wherein the improvement further comprises: one of the first and second guide members is also relatively movable with respect to the other in a second direction generally transverse to the longitudinal reference axis to move the passage in the movable guide member toward or apart from the plane of reference whereby the relative position of the needle occupied by the first and second threads is adjusted.

33. In a weaving apparatus having a first and a second needle array, each needle in the first array is extensible and retractable in a foreground, each needle in the second array is extensible and retractable in a second plane, the first and second planes intersect to define an intersecting line that extends transversely through the tissue apparatus. characterized in that the weaving apparatus has a bracket; a carrier assembly for driving a first and a second wire to each of the needles at a defined angle between the wires, the carrier comprises: a first guide member and a second guide member, each guide member having a distributing step the yarn from the ends of which a yarn is able to be guided towards a needle; where the improvement comprises: one of the first or second guide members is movably mounted on the bracket while the other of the guide members is mounted on the movably mounted guide member, a guide member is movable in a first direction with respect to to the bracket to adjust the space between the ends of the passage in the movable guide member and the bracket as measured in a direction perpendicular to the line of intersection, whereby the angle between the wires is adjusted.

34. The tissue apparatus according to claim 33, characterized in that the first and second needle planes define an angle therebetween, a reference plane extends between the needle planes defined in the tissue apparatus, the reference plane includes the intersecting line extending nonsversively, wherein the improvement further comprises: one of the first and second guide members is also relatively movable with respect to the other in a second direction to move the passage in the movable guide member toward or apart from the reference plane whereby the relative position of the needle occupied by the first and second threads is adjusted.

35. The yarn carrier according to claim 34, characterized in that the other yarn carrier includes a drive screw member that engages the relatively movable member, the advance of the drive screw member moving the movable member in the second direction.

36. The weaving apparatus according to claim 33, characterized in that the one of the first and second guide members is slidably received within the bracket.

37. The weaving apparatus according to claim 36, characterized in that the one of the first and second guide members carries an array of teeth spaced therein, the space between the teeth is of sufficient size to receive a lever lift implement to move a guiding member with respect to the bracket.

38. The weaving apparatus according to claim 33, characterized in that it additionally comprises a cam plate having a return surface of aga with a starting point thereon, the needle return surface includes a transition region that is extends between the entry point and an endpoint, the proportion of (i) the linear distance between the entry point and an endpoint of the transition region and (ii) the linear distance between the beginning point of the surface of needle return and the end point of the transition surface is in the range of fifteen to forty five percent (15% to 45%).