FR2866783A1 - Elevating threads guiding device for e.g. arboriculture, has fold, extending from end portion of one elevating thread, forming hook and allowing hooking of another elevating thread after bringing two threads together - Google Patents

Abstract

The device has a loop shaped fold to permit its attachment on a tie-in thread and to allow, after attachment, its free pivoting on the thread. Folds at an end of a strand that extends from the loop shaped fold permit attachment of an elevating thread (20). A fold (45) extending from an end portion of the thread (20) forms hook and allows hooking of an elevating thread (21) after bringing the two elevating threads together.

Description

The subject of the present invention is, in the field of trellising in

  arboriculture and viticulture, a device for guiding so-called lift wires.

  As the vegetation grows, the young shoots elongate substantially vertically, and the foliage grows so that after a certain time this vegetation tends to fall back under the effect of its own weight. In order to remedy this problem, it is known to trellise this vegetation, which consists in binding these stems to trellis wires extending between stakes.

  It is still known to use so-called lift son, arranged on either side of the stakes, near the top thereof, and between which the vegetation is intended to be contained.

  In the autumn, after the operation of the size, the lifting threads are unhooked from the stakes, to be hanging up only in the spring during the trellising and lifting operation, which makes it possible to increase the leaf surface, to promote the maturation of grapes or the administration of products for the treatment of this vegetation. Such a lifting consists in bringing the lifting wires closer together on both sides of the vegetation and keeping them tightened, in particular using staples arranged like jumpers over these two wires.

  For this purpose we use devices able to allow the reversible maintenance of these so-called lift son, which consist of retaining grooves made on both sides of the post as described in DE 20 39 580 and US 2,011,716. or devices attached to the stake and having such grooves as described in US 3,411,754.

  Also known devices, usually called spacers, designed adapted to be secured to a post and having two branches each extending on either side of said stake and having at their free end a ring in which is threaded thread. Such devices are described in EP 0 876 756 and CH 685 187. The branches can take two extreme positions in which the son are either spaced from each other or are tightened.

  The device of document CH 685 187 provides a manual intervention for the positioning, whether in one position or the other, of each of the branches, advantageously, the spacer device described in EP 0 876 756 is equipped with a spring means allowing the automatic passage of the constricted position to the position away from the release of the branches whose ends are provided adapted to be maintained by a fastening means.

  Note that it is also common to use son raising feet, to maintain the low vegetation of the vine, and are equipped with spacers similar to those previously described.

  These various devices are tedious, in addition, they require a particular adaptation of the plantation in that it is not possible, except to make significant changes, to implement them on facilities existing. This disadvantage is, in most cases, related to the fact that the existing devices are of use in relation to a particular configuration of the stake.

  Another disadvantage of the existing devices is that they are usually made integral with the stake by fixing to a specific height. This allows only a vegetation lift at a given height but does not allow to ensure a lift in stages and accompanying the growth of vegetation.

  The object of the present invention is to remedy these various drawbacks by proposing a so-called lift guide device which has the great advantage of being independent of the type of stakes used, and which is installed without any modification of the existing installation. .

  The device for guiding lifting threads according to the invention is of the type made of metal wire shaped by folding, and it is essentially characterized in that it comprises on the one hand a bend in the form of a loop capable of allowing, by a lateral approach, its hooking on a trellis wire, and to allow, after hooking, its free pivoting on said trellis wire; and on the other hand at one end of a strand extending from said loop-shaped fold, a first folding adapted to allow the hooking of a lifting thread, extended, in extreme part, by a second folding forming a hook , able to allow the picking of the second take-up thread after bringing the two so-called lift wires closer together.

  The main advantages of the device according to the invention are that the latter is intended to be hooked on a wire, without the need for stakes, it can be hung on a wire taut, just as it is hung the first thread lift.

  According to an additional feature of the device according to the invention, the loop-shaped folding consists of a winding over 360 with a zone of overlap of the turns where they are not contiguous to allow the engagement of the trellis wire.

  According to another additional feature of the device according to the invention, the first folding adapted to allow the attachment of a thread lift consists of a succession of two folds at right angles to form on the one hand a section parallel to the axis of passing the trellis wire in the loop-shaped bending, to allow kinking of the take-up wire, and two radial segments at said section for maintaining kinked said wire.

  According to another additional characteristic of the device according to the invention, the second folding forming a hook, adapted to allow the picking of the second take-up thread consists of a folding to form a hook forming a plane perpendicular to the axis of passage of the thread of trellising in the loop-shaped folding.

  According to a particular embodiment of the device according to the invention, the second folding hook is shaped in the form of arrow having two retentive zones and at the end a triangular deviating portion so as to allow the picking of the thread lift from above or by the below.

  According to a first particular embodiment of the device according to the invention, it comprises two rectilinear strands extending from the loop-shaped folding at an angle with respect to each other, and each of which is provided with its end, a first and a second fold for the attachment of the two lift son.

  According to a variant of the first embodiment of the device according to the invention, the ends of the straight strands are folded symmetrically with respect to each other.

  According to a second particular embodiment of the device according to the invention, it comprises two rectilinear strands extending from the bend in the form of a loop being aligned with respect to each other, one being provided at its end a first and a second folding for hooking and picking two lifting son, while the other is provided at its end with a means, similar to said loop-shaped folding, hooking of a foot lifter.

  According to an additional feature of the second particular embodiment of the device according to the invention, the rectilinear strand extending between the loop-shaped folding and the first and second folding for hooking and hooking of two lifting son, comprises in its middle region a double loop for hanging an intermediate lift wire.

  The advantages and characteristics of the device according to the invention will become more clearly apparent from the description which follows and which refers to the appended drawing, which represents several non-limiting embodiments thereof.

  In the accompanying drawings: FIG. 1 is a diagrammatic front elevational view of a first embodiment of the device according to the invention.

  - Figure 2 shows a schematic side elevational view of the same embodiment.

  - Figure 3 shows a schematic top view of the same embodiment.

  FIG. 4 represents a diagrammatic elevational front view of a second embodiment of the device according to the invention.

  - Figure 5 shows a schematic side elevational view of the same embodiment.

  - Figure 6 shows a schematic top view of the same embodiment.

  With reference to FIGS. 1, 2 and 3, there can be seen a first embodiment 1 of the so-called lift guide device according to the invention.

  As shown in FIG. 3, the device 1 is intended to cooperate with, on the one hand, a trellising wire 2 carried by a post P which it crosses, and on the other hand two raising wires 20 and 21 not secured to the post P The device 1 is in the form of a folded metal wire 20, which preferably consists of a spring-grade stainless metal.

  It comprises in its central region a loop-shaped folding 10 comprising a central opening 11 for the passage of the trellis wire 2. The loop 10 is shaped to allow the introduction of the device 1 on the wire 2 by a lateral approach then that it is stretched, for this purpose it consists of a winding greater than 360 to allow the creation of the central opening 1, while in the superposition area of the turns they are non-contiguous to allow the engagement of the wire 2.

  In practice the device 1 is approached by the wire 2 which is engaged between the two turns of the loop 10, then by making the device 1 a quarter turn is held the wire 2 in the central opening 11.

  From the loop 10 of the device 1 extend two rectilinear strands 4 and 5 forming between them a certain angle, in this case of the order of 60, and whose ends are shaped for the attachment of the lift wires 20 and 21 .

  The end 40 of the strand 4 thus has on the one hand a fold 41 at right angles which generates a rectilinear section 42 parallel to the axis of the central opening 11 of the loop 10, and on the other hand a fold 43 to right angle to form a rectilinear segment 44 perpendicular to the plane formed by the strand 4 and the rectilinear section 42. As can be seen more specifically in FIG. 3, the lift wire 20 is intended to be twisted on the rectilinear section 42, the rectilinear segment 44 and the strand 4 at the fold 41 helping to maintain the wire 20 kinked.

  The segment 44 comprises at the end an arrow-shaped folding 45 extending in a plane perpendicular to the axis of the opening 11 of the loop 10. This folding 45 in the shape of an arrow presents on the side of the segment 44 two zones. retentive 46 and 47, positioned respectively above and below the segment 44, and at the end a triangular portion 48 deflector.

  Similarly, the strand 5 has at its end 50, a fold 51 at right angles, a straight section 52, a fold 53 at right angles, a rectilinear segment 54, at the end an arrow-shaped fold 55 having two zones retentive 56 and 57, and a triangular portion 58 deviating.

  The strand 5 is, however, symmetrical with the strand 4 in that the fold 41 is made in the reverse direction of the fold 51.

  The straight section 52 is of course intended for the kinking of the lifting wire 21, while the rectilinear segment 54 and the strand 5 at the fold 51 contribute to keeping the wire 21 kinked.

  It will be noted that the kinking of the wires 20 and 21 on the rectilinear sections, respectively 42 and 52, due to the tightening of the sections by the wires 20 and 21, contributes to keeping the device 1 in a fixed position with respect to these wires. and 21, and preferably, depending on the manner in which it is installed, in a plane perpendicular to these wires 20 and 21.

  In the configuration shown in Figures 1, 2 and 3, the strands 4 and 5 are spaced apart, that is to say, they keep spaced the lift son 20 and 21 to allow the growth of vegetation.

  When it is necessary to tighten the vegetation, the lift wires 20 and 21 are lifted, which, as shown in dashed lines in FIG. 1, is easily made by bringing them together, for example by grasping the straight sections 42 and 52 of the device 1, and on the one hand hooking the wire 20 with the bend 55 in the form of an arrow, the wire 20 settling in one of the retentive zones 56 and 57 as it passes over or over below the triangular portion 58 deflector, and secondly the lift wire 21 with the folding 45 in the form of arrow, the wire 21 settling in one of the retentive zones 46 and 47 as it passes over or below the deviating triangular portion 48.

  Release of the lift son 20 and 21 is achieved by operating the reverse maneuver, that is to say by disengaging the folds 45 and 55 in the form of arrow, and by a spring effect the two strands 4 and 5 open .

  Note that it may be necessary to add to the device 1 means for limiting the movement of the lift son 20 and 21, to prevent the devices 1 that equip a vineyard road does not rock on one side with the vegetation. Such means may for example consist of chains or the like, of selected length and connecting each of the son 20 and 21 to a stake or a fixed P-wire such as wire 2 or another analog.

  The device 1 according to the invention is independent of the type of post used to support the trellis wire 2, and it is adaptable to the son 2, 20 and 21, while they are already in place. This device can therefore easily be used on existing installations without redevelopment thereof.

  It will be noted that it is possible for the two means for hooking up the lift wires 20 or 21 to be other than a rectilinear section 42 or 52, for example a loop or the like, 2866783 8 with non-contiguous turns to make it possible to put the thread in and hold it there. It is however recommended that one of these two means be a rectilinear section, to promote the maintenance of the device 1 in a plane perpendicular to the son.

  Referring now to Figures 4, 5 and 6, there can be seen another embodiment 6 of the son guide device said levers according to the invention.

  This device 6 is also in the form of a folded metal wire, which preferably consists of a spring-grade stainless steel.

  It also comprises a loop-shaped folding 60 comprising a central opening 61 intended for the passage of the trellising wire 2. The loop 60 has the same characteristics as the loop 10 of the device 1, in order to be put on the wire 2 by a lateral approach while the latter is stretched.

  Loop 60 extends a rectilinear strand 7 whose end 70 has on the one hand a fold 71 at right angles which generates a rectilinear section 72 parallel to the axis of the central opening 61 of the loop 60, and on the other hand a fold 73 at right angles to form a rectilinear segment 74 perpendicular to the plane formed by the strand 7 and the rectilinear section 72.

  The segment 74 comprises at the end an arrow-shaped folding 75 extending in a plane perpendicular to the axis of the opening 61 of the loop 60. This folding 75 in the shape of an arrow has on the side of the segment 74 two zones. retenters 76 and 77, respectively positioned above and below the segment 74, and at the end a triangular portion 78 deflector.

  The device 6 further comprises, extending from the loop 60, in the opposite direction to the strand 7 and substantially in alignment with the latter, a strand 62 provided at its end with a loop 63 similar to the loop 60.

  It will be noted that in a variant of this device 6, the loop 60 constitutes its lower end, that is to say that there is no strand 62.

  In a similar manner to the device 1, the device 6 is intended to be pivotally mounted on the trellis wire 2 via the loop 60, while a lifting wire 20 is twisted on the straight section 72, and that the folding 75 in the shape of an arrow makes it possible to pick the other lifting thread.

  It is thus possible to bring and hook the two lifting son by means of devices 6 placed step by step. Advantageously, the devices 6 may alternately be positioned one on one side and the other of the other vegetation, as shown in Figure 4.

  With this embodiment, it is possible to guide foot lifting son 22, as shown in Figures 5 and 6, using the loops 63. By tilting the devices 6, pivoting on the wire 2, it is possible to at the same time tighten up and down the lifting wires, or simultaneously tighten them.

  We can also notice the presence on the strand 7, in the median region thereof, of a double loop 79 intended to allow the maintenance of an intermediate lift wire 23, shown in FIGS. 5 and 6, this double loop 79 being shaped to allow engagement of the wire 23 while the latter is stretched by inclining it to engage between the two loops of this double loop 79.

  Such a device is reserved for particular crops, in which the vegetation is abundant, and extends over a good height.

  In a similar manner to the device 1, the device 6, as well as its previously mentioned variants, is preferably associated with means adapted to limit its pivot angle on the trellis wire 2, and which may consist of chains or the like attached to pickets or fixed wires. It is also conceivable that the device according to the invention, whatever its embodiment, has an additional folding to create a support member adapted to cooperate with a near stake to limit the pivoting.

  The device according to the invention may also be associated with means for holding up the lift wires at the end of a similar design row. Such a holding means may be in the form of a device 1 disposed in a horizontal plane, and having on the one hand, replacing the loop 10, a ring intended to be threaded on a picket, and on the other hand at the ends 40 and 50 a ring for fixing the ends of the lift son, while the ends 45 and 55 are shaped for mutual hooking.

Claims (9)

  1) Thread guiding device known as levellers used in the field of trellising arboriculture and viticulture (20, 21) of the type made of metal wire shaped by folding, characterized in that it comprises on the one hand a folding (10; 60) in the form of a loop adapted to allow, by a lateral approach, its hooking on a trellis wire (2), and to allow, after hooking, its free pivoting on said trellis wire (2); and on the other hand at the end (40; 50; 70) of a strand (4; 5; 7) extending from said loop-shaped fold (10; 60), a first fold (41,42, 43; 51, 52, 53; 71, 72, 73) adapted to allow the attachment of a lifting wire (20, 21), extended, in extreme part, a second folding (45; 55;  75) forming hook, able to allow the hooking of the second thread lift (20, 21) after bringing said two son lift (20, 21).   2) Device according to claim 1, characterized in that the loop-shaped folding (20; 60) consists of a winding over 360 with a zone of overlapping turns where they are non-contiguous to allow engagement trellising wire (2).   3) Device according to claim 1 or claim 2, characterized in that the first folding adapted to allow the attachment of a lift wire (20, 21) consists of a succession of two right-angle folds (41, 43; 51, 53; 71, 73) to form on the one hand a section (42,; 52; 72) parallel to the axis of passage of the trellis wire (2) in the loop-shaped fold (20; 60) to allow kinking of the take-up wire (20, 21), and two segments (4, 44, 5, 45, 7, 74) radial to said section for holding said wire twisted.   4) Device according to any one of the preceding claims, characterized in that the second folding (45; 55; 75) forming a hook, adapted to allow the hooking of the second lifting wire (20, 21) consists of a folding to form a hook extending in a plane perpendicular to the axis of passage of the trellis wire (2) in the loop-shaped fold (20; 60).   5) Device according to claim 4, characterized in that the second folding (75) forming a hook is shaped as an arrow having two retentive zones (46, 47, 56, 57, 76, 77) and at the end a triangular portion ( 48; 58; 78) so as to allow the lifting thread to be picked up from above or from below.   6) Device according to any one of the preceding claims, characterized in that it comprises two straight strands (4, 5) extending from the loop-shaped folding (10) at an angle with respect to the other, and each of which is provided at its end with a first folding (41, 42, 43, 51, 52, 53) and a second folding (45, 55) for hooking the two wires lifters (20, 21).   7) Device according to claim 6, characterized in that the ends (40, 50) of the straight strands (4, 5) are folded symmetrically with respect to each other.   8) Device according to any one of claims 1 to 5, characterized in that it comprises two straight strands (7, 62) extending from the loop-shaped fold (60) being aligned with respect to each other. to the other, one (7) being provided at its end (70) with a first (71, 72, 73) and a second (75) folding for hooking and picking two son lifters (20, 21), while the other (62) is provided at its end with means, similar to said loop-shaped folding (60), hooking (63) of a foot lifter (22). ).   9) Device according to claim 8, characterized in that the rectilinear strand (7) extending between the loop-shaped fold (70) and the first (71, 72, 73) and the second (75) fold for the hooking and picking of two lift son (20, 21) has in its central region a double loop (79) for hooking an intermediate lift wire (23).