FR2567859A1 - Metal-wire reel fitted with a cutting device on its periphery - Google Patents

Abstract

The metal-wire reel 1, in which a ring of wire 2 is held in a cage formed from a cross-member 3, the branches 4 of which are folded over so as to retain the said ring 2 and to act as a pay-out device, the wire 6 being drawn as required through an eye 5 arranged in the centre of the cross-member 3, is characterised in that it furthermore comprises, on its periphery, a cutting device 7 fixed, above a portion of the ring 2, to two remote branches 4 of the cross-member 3, which cutting device 7 consisting of two superposed blades 8, 9, one a lower blade 9 and the other an upper blade 8, which are solidly attached at one end 10, the lower blade 9 closest to that part of the ring 2 having two recesses 11, 12 close to its edges with two lugs 13, 14 for fixing to each of the respective branches 4 of the cross-member 3 and at least one wire 6 guiding groove 17 which coincides with at least one respective notch 18 provided on one of the edges of the upper blade 8.

Description

 The present invention relates to a coil of metal wire provided with a cutting device at its periphery.

 The coil of metal wire according to the present invention is known in the art and in trade under the name of Filiac bobbin.

 A Filiac spool is a spool of metal wire in which a wire crown is held in a cage formed from a spider whose branches are folded so as to retain said crown and to serve as a reel, the wire being pulled through an eye in the center of the cross as needed. Usually such a bobbin to be unwound through the center and through the eye contains substantially 50 meters of wire whose diameter can vary between 0.5 mm and 2 mm.

 The nature of the wire can be round wire, galvanized wire, plasticized wire and the like.

 As far as is known, there is at present no simple, robust cutting device disposed at the periphery of a spool of wire which is capable of cutting relatively large wires with a diameter greater than 1 mm.

 I1 exists in the technique of windings of metal wire conditioned on display cards on which edges are riveted to cut certain diameters of metal wire. These cutting edges which are sharp blades cannot cut the relatively large wires wound on a bobbin having a crown of wire held in a cage formed from a crosspiece whose branches are folded so as to retain the crown.

 To cut such relatively large coiled wires, the user must use pliers which suit the diameter of the wire. It is not always easy to have the appropriate pliers. On the other hand, a user can injure himself with the pliers. In addition, there is a problem with the installation of the clamp. Some users put the clip on their belt and as already mentioned it can result in accidents.

 The present invention overcomes the aforementioned drawbacks by proposing a bobbin which is provided at its periphery with a simple, robust, reliable cutting device which makes it possible to cut all the desired wire diameters very easily.

 In accordance with the present invention, the coil of metal wire comprises at its periphery a cutting device fixed, above a part of the crown, on two branches distant from the spider, which cutting device consists of two superimposed blades, one lower and the other upper, integral at one end, the lower blade closest to the crown part having near its ends two notches with two fixing lugs on each of the respective branches of the cross and at least one groove guide wire which coincides with at least one respective notch provided on one of the edges of the upper blade.

The present invention also relates to the characteristics below considered in isolation or in all their technically possible combinations:
- The two blades are two metal tabs, one of their ends forming an elbow which have an identical thickness and which came in one piece;
- Each fixing lug has a hollow to receive the respective branch of the cross;
- The thread guide groove or grooves of the lower blade have a V shape;
- the notch (s) of the upper blade has a point shape;
- There is provided for each wire guide groove on the lower blade, a corresponding notch on the upper blade;
- the notches on the upper blade are arranged on the edge furthest from the eye of the cross;
- the upper blade is shorter than the lower blade;
the wire wound according to a crown to be cut by the cutting device has a diameter between 0.5 mm and 2 mm;
- the coiled wire to be cut is a wire chosen from a galvanized wire, a plasticized wire, a coated wire.

Other advantages and characteristics of the present invention will emerge from the detailed description given below, with reference to the appended drawings in which:
- Fig. l is a perspective view of a coil of metal wire provided at its periphery with a cutting device according to the present invention;
- Fig. 2 and 3 are elevational views of the two sides of the coil;
- Fig. 4 is a front view of the cutting device.

 In the accompanying drawings in which the same reference numerals designate similar parts, the coil of metal wire provided with a cutting device at its periphery according to the present invention is designated as a whole by 1. The wire crown 2 is held in a cage formed from a cross 3 whose branches 4 are folded so as to retain said crown 2. The cross 3 has substantially in its center an eye 5 through which passes and is guided the strand of wire 6 which is unwound from inside the wire crown 2. After passing through the eye 5, the strand of wire 6 to be cut is directed towards the cutting device 7. The cutting device 7 is fixed to the periphery above part of the crown 2 on two branches 4 of the cross 3 (see Fig. 3).

 The cutting device 7 consists of two superimposed blades 8 and 9 connected at one end by an elbow 10. Preferably, the two superimposed blades 8 and 9 came in one piece. The lower blade 9 closest to the crown portion 2 comprises near its two ends two notches 11, 12 with two fixing lugs 13, 14. Each fixing lug 13, 14 has a recess 15, 16 for receiving the branch respective 4 of the spider 3. The lower blade 9 is also provided with a plurality of thread guide grooves. In the accompanying drawings, there is shown only a wire guide groove 6. This groove is designated by 17. It is quite certain that the number of wire guide grooves can vary at will but it is necessary to have at least minus a guide groove 17.

 The groove or grooves 17 for guiding the wire 6 of the lower blade 9 preferably has a V shape.

However, a U shape or any other suitable shape may be suitable.

 Opposite and in coincidence of each groove 17, the upper blade 8 is provided with a corresponding notch 18. Each notch 18 preferably has a point shape but any other shape may be suitable. To obtain the best wire cutting effect, the notch (s) 18 of the upper blade 8 is or are arranged on the edge furthest from the eye 5 of the crosspiece 3. The upper blade 8 is usually shorter than the blade lower 9, its end being set back with respect to the notch 11 where the cutting device 7 is partly fixed on one of the branches 4 of the spider 3.

 After having explained the structure of the wire spool 1 according to the present invention, which is provided at its periphery with the cutting device 7, we will now describe its mode of use.

 Firstly, the user unwinds part of the wire 6 from the interior of the crown 2. The strand of wire 6 thus pulled from the interior of the crown 2 is then brought to pass through the eye 5. This strand of wire 6 is then inserted into the guide groove 17 of the lower blade 9.

 The user then exerts pressure using the thumb on the upper blade 8 in order to fold it against the lower blade 9. The wire 6 is then blocked both by the groove 17 and in the notch 18. In this position the wire 6 is not likely to move.

The wire 6 is then folded back towards the tip of the notch 18 substantially at an angle of 900.

 The user then only has to twist the wire 3600 and he notices the wire break 6.

 It is thus possible with the device according to the present invention, to cut wires having a diameter as large as 2 mm. The cut is clear and the operation takes place very easily.

 Another advantage of such a device is that it makes it possible to cut wires which are coated, for example, with plastic material. Those skilled in the art know from experience that it is not easy to cut large wires whose diameter is between 0.8 and 2 mm.

 The present invention therefore provides a simple solution to the problem of cutting metal wire wound on a spool whose wire length can reach up to 50 meters and even more.

Claims (10)

 1. Reel of metal wire (1) in which a wire crown (2) is held in a cage formed from a cross (3) whose branches  (4) are folded so as to retain said crown (2) and to serve as a reel, the wire (6) being pulled through an eye (5) arranged in the center of the crosspiece (3) as and when required, characterized in that it further comprises, at its periphery a cutting device (7) fixed, above a part of the crown (2), on two distant branches (4) of the crosspiece (3), which cutting device (7) consists of two superimposed blades (8, 9), one lower (9) and the other upper (8), integral at one end (10), the lower blade (9) la closer to the crown part (2) having near its ends two notches (11, 12) with two fixing lugs (13, 14) on each of the respective branches (4) of the spider (3) and at least one groove guide (17) of wire (6) which coincides with at least one respective notch (18) provided on one of the edges of the upper blade (8).  2. Coil according to claim 1, characterized in that the two blades (8, 9) are two metal tabs, one of their ends forming an elbow (10), which have an identical thickness and which came in one piece .  3. Coil according to one of claims 1 or 2, characterized in that each fixing lug (13, 14) has a recess (15, 16) to receive the respective branch (4) of the spider (3).  4. Coil according to any one of claims 1 to 3, characterized in that the groove or the guide grooves (17) of wire (6) of the lower blade (9) has a V shape.  5. Coil according to any one of claims 1 to a, characterized in that the notch or the notches (18) of the upper blade (8) has a point shape.  6. Coil according to any one of claims 1 to 5, characterized in that there is provided for each guide groove (17) of wire (6) on the lower blade (9) a corresponding notch (18) on the upper blade (8).  7. Coil according to any one of claims 1 to 6, characterized in that the notches (18) on the upper blade (8) are arranged on the edge furthest from the eye (5) of the spider (3)  8. Coil according to any one of claims 1 to 7, characterized in that the upper blade (8) is shorter than the lower blade (9).  9. Reel according to any one of claims 1 to 8, characterized in that the wire wound according to a crown (2) to be cut by the cutting device (7) has a diameter between Q5 mm and 2 mm  10. Coil according to any one of claims 1 to 9, characterized in that the wound wire to be cut (6) is a wire chosen from a galvanized wire, a plasticized wire, a coated wire.