FR2705447A1 - Apparatus for grappling with fireworks and pyrotechnic delay that can be used together in a fireworks device. - Google Patents

Abstract

The present invention relates to the bundling of fireworks bombs. For this purpose is used a device comprising a base (1) provided with cells (20) each of which is capable of receiving a free end (10) of the wick (9) and, in the case of one of them , a free end (57) of an igniter cord (58). Between two consecutive cells (20) is arranged, in the base (1), a channel (33) capable of receiving a pyrotechnic delay (3) ensuring the transmission of fire between the cells (20). Means forming a cover (2) retain on the base (1) the free ends (10, 57) of the wicks (9) and of the igniter cord (58) and the pyrotechnic delays (3). The grappling operation is thereby facilitated and its result is made more reliable. Delay changes on the firing range are considerably easier.

Description

The present invention relates to a device for clustering bombs

  each having a wick, having a base in the form of a strip clean firstly to be fixed along a battery of mortars each of which is intended to receive a respective firework bomb and secondly to integrally receiving a free end of each wick, pyrotechnic delays connecting the free wick ends two by two and a free end of an igniter firing bead of the bombs via

delays and lashes.

  In the current state of the art, the connection between the delays, the wicks of the bombs and the igniting cord is effected by means of an assembly comprising sheaths of kraft paper held around these various components by a ligature, the whole being fixed on the bar,

  made of wood, also by ligature.

  The realization of this assembly is long and tedious because of the many cutting operations of kraft paper sleeves and ligating. They are also delicate, the care given to the ligating and the passage of the wicks being essential to have a good transmission

  fire between the different components.

  In addition, if the artificer on the ground wants to change the timing of the firing of the bombs, which involves the replacement of pyrotechnic delays, this modification requires the preliminary removal of the ligatures and their recovery, and we find the disadvantages above, generally aggravated by the fact that one does not

  the conditions in the field are as favorable as in the workshop.

  Finally, the known mount is particularly vulnerable to moisture. The object of the present invention is to remedy these drawbacks and, to this end, the present invention proposes a grappling device of the type indicated in the preamble, characterized in that the base comprises a plurality of transverse receiving cells of a respective free end of the wick, distributed longitudinally at the rate of one cell per free end of the wick and opening in the same longitudinal face of the base, longitudinal channels for receiving a respective pyrotechnic delay, connecting the cells in pairs and opening into said face, and means for fixing cover means on said face, in that there are further provided cover means, comprising fixing means adapted to cooperate with said means for fixing the base to ensure fixing the cover means on said face in a position in which they define with the cells and the channels a closed assembly while releasing a respective passage for the wicks and the igniter, and in that the cells and the channels and / or the cover means are shaped such that, when the cover is fixed on said face, it integrally trapped a free end of wick in each cell, a pyrotechnic delay in each receiving channel and a free end of igniter cord in

  one of the cells, in a pyrotechnic continuity relation.

  The base and the lid means are for example

  made by molding in synthetic material.

  A person skilled in the art will easily understand that such a device allows a much faster making bomb clusters, the cutting operations of kraft paper and ligating sheaths being removed, and that it is much easier to arrange the pyrotechnic delays , the free ends of the wick and the free end of the ignition cord in a proper relationship to allow good fire transmission between them, the position of the cells and channels predetermined the position of these different components and by

therefore this relationship.

  These advantages are found wherever the grappling takes place and, in particular, if this grappling takes place on the ground and it is particularly possible, in much better conditions, to change the timing of the field shot. , even in the very last

  minute, keeping all the reliability of the assembly.

  Preferably, the cells are identical in order to ensure an identity of the fire transmission conditions between the different pyrotechnic delays and the different free ends of the wick, and the channels for receiving the pyrotechnic delays are identical, to facilitate an interchangeability of the pyrotechnic delays. . Similarly, when the cover means has a cover per cell, which facilitates a progressive mounting of the pyrotechnic delays and wick free ends on the device, the covers are preferably mutually identical, which offers both the advantage to make them interchangeable and to promote the interchangeability of pyrotechnic delays, and the advantage of allowing standardized manufacturing, particularly

is made by molding.

  To facilitate a change in pyrotechnic delays in the field, even immediately before firing, the means for fixing the cover means on the base are preferably reversible, that is to say, releasable without destruction, which allows reuse the

  lid means after disassembly.

  For example, the fastening means comprise snap-fastening means, easy to make in reversible form, especially when the base and the cover means are made of a synthetic material, which also makes it possible to produce these fastening means directly during molding, particularly simple and economical. Naturally, a rigorous positioning of the pyrotechnic delays in the channels intended for their reception favors the proper functioning of the assembly and the present invention also proposes a pyrotechnic delay intended to be used together with the grappling device according to the invention, which pyrotechnic delay is characterized in that it comprises a longitudinal tubular body, for example a metal body, lined internally with a pyrotechnic delay composition, open at its transverse ends and having an immobilization conformation on the outside.

  the base and the cover means.

  For example, for this purpose, the receiving channels and / or the cover means comprise mutually opposite transverse shoulders, of longitudinal stop for the delays.

  pyrotechnics and the tubular bodies of the latter include

  same, to cooperate with these transverse shoulders mutually

  opposite, transverse shoulders also mutually opposite.

  The receiving channels and / or the cover means, on the one hand, and the tubular bodies, on the other hand, are dimensioned longitudinally, between the respective shoulders, so that a mutual abutment is established in both directions. longitudinals, which precisely fixes the position of the pyrotechnic delays on the base, in the longitudinal direction. Fixing the free ends of the wicks in the respective cell can be provided in a particularly simple manner when, according to a preferred embodiment, the cells and / or the cover means comprise baffle retention means of the free end of respective wick. The realization of such means, in particular by molding in one piece with the base and / or the means forming a cover

is easy.

  It could be envisaged that the transmission of fire between the pyrotechnic delays and the free ends of the locks is effected by means of a pyrotechnic composition in which one

  would drown the free ends of the wicks inside the cells.

  However, it is preferred a direct transmission, not requiring additional cell stuffing operations by means of a pyrotechnic composition, and it is provided for this purpose, preferably, that the channels for receiving the pyrotechnic delays are placed according to the same longitudinal alignment, and that at each end of the tubular body a pyrotechnic delay, the pyrotechnic composition

  delay shows a rendering cone.

  Naturally, it is essential to prevent any transmission of the fire from one cell to another without passing through the pyrotechnic delay connecting them mutually and, for this purpose, said face and / or the means forming a lid preferably have transverse deflector reliefs between the cells, outside the reception channels of the pyrotechnic delays. Such reliefs can advantageously be made by molding, during the manufacture of

  the base and / or cover means by this method.

  A person skilled in the art will readily understand that the use of a grappling device and pyrotechnic delays according to the invention makes it possible to provide the fireworks and the public with fireworks devices requiring only a minimum of assembly operations in the field, so that the present invention extends to a fireworks shooting device, comprising a stack of mortars mutually juxtaposed longitudinally, characterized in that it comprises a grappling device according to the invention, whose base

  is attached along the mortar battery.

  This fireworks display device may further comprise fireworks bombs each of which is housed in a respective mortar and has a wick whose free end is engaged in a respective cell, an igniting cord with a free end is engaged in a cell, and pyrotechnic delays according to the invention each of which is housed in a respective receiving channel, the lid means being fixed on the base by said fixing means and holding on the base the free ends of the locks and cord

  igniter and pyrotechnic delays.

  Where appropriate, in the case of a product intended for the general public, it can then be provided that the means for fixing the cover means on the base make the fastening irremovable without destruction, in order to avoid disassembly being possible. followed by a reassembly in defective conditions, possibly dangerous, although a device according to the invention, by the simplicity of mounting that it allows,

  also helps avoid faulty setups.

  Other features and benefits of different aspects of

  the invention will emerge from the description below, relating to an example

  non-limiting embodiment of the invention, as well as drawings

  annexed which form an integral part of this description.

  FIG. 1 shows an exploded perspective view of a device for

  grappling according to the invention, with its pyrotechnic delays.

  - Figure 2 shows a view of a fireworks shooting device equipped

  a grappling device according to the invention, ready for shooting.

  FIG. 3 shows a view of a pyrotechnic delay according to the invention

in section by a longitudinal plane.

  - Figure 4 shows a view of an individual cell cover from below, that is to say from the side of the cover to be turned towards the base. FIG. 5 shows a view of the same lid in section through a plane

  cross-section marked V-V in FIG.

  Referring firstly to FIGS. 1 and 2, where the base or strip of the grappling device according to the invention has been designated by 1 each cell cover, visible in more detail in FIGS. 5, and

  by 3 each pyrotechnic delay, visible in more detail in FIG.

  FIG. 2 further illustrates a battery 4 of mortars, comprising a juxtaposition of mutually identical, substantially vertical, mortar tubes 5 along an alignment 6 which will subsequently constitute a longitudinal reference, these tubes being at this point effect mounted in a frame 7 for example of wood, and each containing a firework bomb 8 provided with a wick 9 having a free end 10 immobilized between the base 1 and a cover 2 respectively

  when the battery 4 is ready to fire, as it will appear later.

  In particular with reference to this state of the battery 4, the base 1 is fixed on the frame 7, for example by means of nails 11, in the immediate vicinity of the mouths 12 of the tubes 5, and along the alignment of the latter, naturally without interfering with their mouths 12 so as not to

  not constitute an obstacle to the exit of the bombs 8.

  For the sake of convenience, the grappling device according to the invention will be described with reference to the position it thus occupies on the frame 7 of a battery 4 of mortars, in the example illustrated in FIG. 2, being understood that does not result in any particular limitation as to the orientation that a grappling device according to the invention can occupy

in use.

  Referring to the position shown in FIG. 2, the base 1 has a generally flat shape in the vertical direction 13 and is elongate in the longitudinal horizontal direction 14 defined by the alignment.

  6, so as to present a respective zone 15 next to each mouth 12.

  It thus has two plane, substantially rectangular, horizontal faces in its position illustrated in FIG. 2, due to an upper face 16 and a lower face 17, mutually connected by a vertical edge 18. The long sides, not referenced , faces 16 and 17 are oriented longitudinally and their short sides, also no

referenced, transversely.

  In order to receive the nails 11, the base 1 is pierced right through, between its faces 16 and 17, holes 19 located respectively between two adjacent areas 15. In the illustrated example o the zones 15 are six in number, it is thus provided five nailing holes 19 of the base 1 on the frame 7 of the battery 4 mortars, it being understood that a different number, likewise that other methods of fixing the base 1 on the frame 7, could be provided without it so far falls outside the scope of the

present invention.

  In each zone 15, the upper face 16 of the base 1 is hollowed out with a respective recess 20 elongate in a horizontal transverse direction and having for example the shape of a rectangular parallelepiped. The presence of each cell 20 is reflected by the presence, under the lower face 17, of a projection 21 which also has, in this example, the shape of a rectangular parallelepiped delimited downwards by a flat, parallel bottom face 22 at the face 17. The faces 22 of the various projections 21 corresponding to the different cells 20 are coplanar with each other and with a longitudinal lower edge 23 of a rib 24 for stiffening the base 1, which rib 24 is also placed protruding under the lower face 17 thereof and extends over the entire longitudinal dimension of the base 1, except at the holes 19, it intersects. The lower faces 22 of the projections 21 and the lower edge 23 of the rib 24 can thus be used for a stable support of the base 1 on any flat support, and for example on a longitudinal, horizontal edge of the frame 7 as shown in FIG. illustrated in Figure 2, the

  nails passing through the base 1 from one side to the other being nailed in this edge 25.

  Each cell 20 is intended to receive the free end 10 of a respective bit 9 and, to help immobilize this free end relative to the base 1 under conditions which will be detailed later, preferably has baffle means, in the example shown in the form of a flat longitudinal wall 26 as the rib 24, which it constitutes an extension, without discontinuity, inside each cell 20. Each wall 26 has an upper edge 30 of level with the upper face 16 of the base 1 and subdivides the corresponding cell 20 into two compartments 27, 28 each having the shape of a rectangular parallelepiped and which are

  mutually juxtaposed in a horizontal transverse direction.

  In this direction, the two compartments 27 and 28 have different dimensions, the compartment 28 of larger dimension being intended to receive the free end 10 of the corresponding wick 9 while the compartment 27 of smaller size is intended to receive a zone 29 of the wick 9 directly adjacent to this free end 10. This compartment 27 directly adjoins the edge 18 of the base 1, by an upper edge 31 placed level with the wall 16, and the base 1 is mounted on the frame 7 of the battery 4 of mortars such that each edge 31 adjoins the mouth 12 of a respective tube 5, the various cells 20 being distributed longitudinally on the base 1 in a non-referenced pitch identical to the non-referenced distribution step longitudinal

tubes 5.

  The cells 20 are mutually identical and each of them is symmetrical with respect to a respective transverse plane 32 which constitutes a plane of symmetry for the whole of the respectively corresponding zone 15, with the exception of the longitudinally extreme zones, slightly different as it will appear later. This plane 32 also constitutes a plane of symmetry for the corresponding lid 2 respectively when it is fixed on the base

  1, and this regardless of the lid 2 and the zone 15 considered.

  The compartments 28 of the various cells 20 are connected in pairs by channels 33, mutually aligned along a longitudinal axis 37 and recessed in the upper face 16, which gives rise to the formation of a longitudinal bulge unreferenced, devoid of particular function, on the lower face 17. Each channel 33 opens freely into the compartments 28 associated and furthermore, to the

  same as the cells 20, in the upper face 16 of the base 1.

  Each channel 33 comprises, in the illustrated example, three sections mutually juxtaposed longitudinally, at the rate of two longitudinally extreme sections 34 and a longitudinally central section 35. The end sections 34, through which each channel 33 opens into the two corresponding compartments 28, have in recess with respect to the face 16 a bottom face 36 which is in the illustrated hemicylindrical example of revolution about the axis 37, which is located in the geometric plane of the face 16. The radius, unreferenced, of bottom faces 36 is smaller than the depth of the cells 20 perpendicular to the upper face 16 of the base, so that the bulge, not referenced, which corresponds to them in the face 15, remains recessed relative to the lower faces 22 of the projections 21 and the edge 23 of the rib 24. The two sections 34 which open into the same compartment 28 are mutually symmetrical with respect to corresponding plane 32 with regard to the zones 15 other than the extreme zones, a single channel 33 opening into the compartments 28 of the cells 20 corresponding to the

extreme zones.

  In their central zone 15, on the other hand, the channels 33 are deprived of background. In other words, each central zone 35 is defined by a hole passing through the base 1 from one side to the other, that is to say from its upper face 16 to its lower face 17. Each of these holes presents when it is seen in plan form of a rectangle, defined by two longitudinal edge areas 38, mutually symmetrical with respect to the axis 37 and spaced perpendicularly thereto by a distance greater than the diameter of the bottom faces 36 of the extreme sections 34, and two transverse edge areas 40 which, because of this compared sizing of the mutual spacing of the edge areas 38 and 39, on the one hand, and the diameter of the faces 36, on the other hand, define shoulders

  transverse, turned towards each other.

  The different channels 33 are identical, especially as to the

  dimensioning of their different sections 34, 35.

  The extreme zones are differentiated from the other zones 15 not only by their lack of symmetry with respect to the respective plane 32 and by the fact that a single channel 33 opens into the compartment 28 of the corresponding cell 20, but also by the fact that that in the extension of this single channel 33 along the axis 37, on the other side of the compartment 28, the base 1 has projecting on its upper face 16 a respective protuberance 42 to which corresponds a hollow 43, without

  particular function, of the lower face 17.

  Each protrusion 42 has, on a longitudinal dimension corresponding to that of an end section 34 of channel 33, from the corresponding compartment 28, an upper face 43 hemicylindrical in revolution about the axis 37 with a diameter identical to that of the faces bottom 34 of the zones 34 of the channels 33. In the direction of a longitudinal distance relative to the corresponding compartment 28, this face 43 is connected to a transverse shoulder 44 facing said compartment 28; in the direction of a distance from the axis 37, this shoulder itself connects to a face 45 also semicylindrical in revolution about the axis 37 but with a diameter greater than that of the

  face 43, which face 45 is also connected to the edge 18 of the base 1.

  Each of the protuberances 42 thus defined presents toward the cell respectively corresponding a flat transverse face 46 continuous, coplanarily extending a non-transverse face

  referenced delimitation compartment 28 in question.

  Each of the channels 33 is intended to receive a respective pyrotechnic delay 3 having a shape suitable for being there

  immobilized by fixing the cover 2 on the base 1.

  For this purpose, as is more particularly apparent from FIGS. 1 to 3, each pyrotechnic delay 3 has a tubular body 47 having a general shape of revolution about an axis which merges with the axis 37, so that one has retained the reference numeral 37 to designate this axis in FIG. 3. The bodies 47 of the different delays 3 are mutually identical, at least externally, as are

  mutually identical different channels 33 for receiving them.

  More specifically, in the illustrated example, each body 37 is delimited in the direction of a distance from the axis 37 by three outer circumferential surface sections due to two longitudinally end sections 48, cylindrical of revolution around the axis 37 with a diameter substantially identical to that of the faces 36 of the sections 34 of the channels 33, and of a longitudinally central portion 49 also cylindrical in revolution about the axis 37 with a diameter corresponding to the mutual transverse spacing of the longitudinal zones of edge 38 of a section 35 of channel 33, so that the section 49 defines by its connection with the sections 48 two shoulders 50 annular in revolution about the axis 37, planes, perpendicular to

  this one and turned in opposite directions.

  These shoulders 50 are mutually spaced longitudinally by a distance substantially identical to the distance longitudinally separating the edge regions 40 of a central section 35 of channel 33, so that each pyrotechnic delay 3 can fit precisely, without the possibility of longitudinal or transverse displacement other than its insertion displacement schematized by vertical arrows in Figure 1, in a corresponding channel 33. Thus, the section 49 is inserted in the section 35 by bearing transversely on the edge zones 38, the shoulders 50 come to bear longitudinally on the shoulders defined by the edge zones 40, and the sections 48 are applied with accuracy against the bottom faces 36 of the end sections 34 of the channel 33 considered. Longitudinally opposite their connection by the shoulder 50 respectively with the section 49, the sections 48 are connected to a respective end face 52 of the body 47, the two faces 52 being annular, flat, of revolution about the axis 37 and turned in opposite directions. The longitudinal distance separating the end faces 52 is substantially equal to the longitudinal distance mutually separating two neighboring cells 20 so that at each of the compartments 28 associated with the same channel 33, the faces 52 of the

  delay 3 corresponding to this channel 33 are flush.

  Each face 52 of the body 47 delimits an open end 53 thereof, thereby opening directly into a compartment 28 of cell 20. This open end is defined by the connection of the respective face 52 with an inner peripheral face 54 of the body 47 which is cylindrical of revolution about the axis 37 with a uniform diameter smaller than that of the outer circumferential surface portions 48. Through this inner peripheral face 54, the body 47 retains a pyrotechnic delay composition 55, suitably calibrated as a function of the delay that it is desired to establish between the firing of the bombs 8 placed in the tubes 5 associated with the two cells 20 connected to one another. channel 33 housing the delay 3. Preferably, the composition 55, made solid by any appropriate means, for example by compression, has at each of the ends 53 a cone 56 of fire restitution, of revolution about the axis 37 , so that the pyrotechnic delays 3 can ignite the free ends 10 of the wicks 9 and, if necessary, another pyrotechnic delay opening in the same

  compartment 28, without physical contact between these different components.

  The covers 2, which will now be described with reference to FIGS. 1, 2, 4, 5, have the function of both keeping the pyrotechnic delays 3 in the channels 33, and of closing at least substantially the cells 20 by immobilizing the free ends 10 of wick 9 and, in one case, a free end 57 of a cord

  inflammator 58, for example of the PICKFORD cord type.

  For this purpose, each cover 2 is adapted to be fixed, preferably removably, in a specific position on the base 6, as illustrated in particular in Figure 2, and it is with reference to this position

  that the lids 2 will be described now.

  Each of these covers 2 has a base plate 59 defined in particular by two mutually parallel flat faces, at the rate of an upper surface 60 devoid of function and a lower face 61 intended to be applied flat on the upper face. 16 of the base 1 around a respective cell 20 and, depending on whether it is a cell 20 of an extreme zone or a cell 20 of an intermediate zone, around the extreme portion 34 of the single channel 33 opening into this socket 20 and the corresponding protuberance 42 or around the two end sections 34 of channel 33 opening into this

cell 20.

  The two faces 60 and 61 have a rectangular plane, defined by their connection with two transverse edge areas 62 mutually symmetrical with respect to the plane 32, and by two longitudinal edge zones 64, 65, respectively symmetrical with respect to

this plan 32.

  The two transverse edge areas 62 are mutually spaced longitudinally by a distance which corresponds substantially to the longitudinal distance mutually separating the central sections 35 from two consecutive channels 33, that is to say the sum of the respective longitudinal dimensions of two sections. extremes 34 and a compartment 28, or the sum of the longitudinal dimension of an end portion 34, that of the upper face 43 of a protuberance

  42 and that of a compartment 28 of cell 20.

  By these edge areas 62 each cover 2 applied flat by its lower face 61 on the upper face 16 of the base 1 thus makes it possible to complete the longitudinal stop that constitute for the shoulders 50 of the body 47 of a pyrotechnic delay 3 the singing zones 40, also forming a shoulder, of a central section 35 of channel 33. To allow, for this purpose, to accommodate in each cover 2 or end portions 48 of outer peripheral face of two pyrotechnic delays 3 disposed respectively from and other of the associated cell 20, in the case of an intermediate zone, either on the one hand such an area 48 and on the other hand a protuberance 42 in the case of the extreme zones, in the lower face 61 of each plate 59 are arranged, according to the same longitudinal alignment, two channel sections 66, delimited by a respective bottom face 67 hemicylindrical of revolution about the axis 37 if one refers to the position said predetermined diameter, with a diameter substantially identical to that of the bottom faces 36 of the end portions 34 of channel 33. Each of these channel sections 66 opens on the one hand into a respective edge zone 62 of the plate 59 and on the other hand, in a recess 68 also hollowed out in the lower face 61, between the two sections 66, straddling the plane 32 and symmetrically with respect thereto if reference is made to the said

predetermined position.

  It is easy to see that, by their bottom face 67, the channel sections 66 marry the upper part of the outer peripheral surface portions 48 of the body 47 of the two pyrotechnic delays 3 disposed on either side of a cell 20, in the in the case of an intermediate section, or the upper part of an end section 48 of external peripheral face of the body 47 of a single pyrotechnic delay 3 and the upper face 43 of a protuberance 42 in the case of an area 15 extreme. The cell 68, as well as the channel sections 66, correspond to projections, respectively 72, 73, on the upper face 60 of the plate

  59, but these projections are devoid of function.

  The channel sections 66 have respective longitudinal dimensions substantially identical to those of an end section 34 of channel 33, so that the cell 68 is superimposed on the corresponding cell 20,

  if we refer to the longitudinal direction.

  If one refers to a transverse direction, the cell 68 is smaller than a cell 20, and placed so as to be superimposed integrally to the corresponding compartment 28, by a non-referenced area closer to its edge area 65 , while it is superimposed, by a zone also not referenced closer to the edge 64, only to a portion of the compartment 27 corresponding, namely about half of this

  compartment 27 closest to the wall 26.

  At this level, the cell 68 directly adjoins the edge zone 64 of the plate 59 and has a longitudinal flange 69 projecting under the face

lower 61 of the plate 59.

  This flange 69, symmetrical with respect to the plane 32, has perpendicularly to it longitudinal dimensions slightly smaller than those of the compartment 27, so as to penetrate into the latter. Perpendicularly to the lower face 61 of the plate 59, it has dimensions smaller than those of the compartment 27 perpendicular to the face 16, so that it allows the passage of the end zone 29 of a respective wick 9 and, in as regards one of the extreme zones, that of the free end 57 of the cord 58, inside the compartment 27, while constituting with the wall 26 a baffle imposing on this end zone 29 and on this free end 57 a compression and deflections inflated ensuring their immobilization inside the cell 20 when the cover 2 is fixed on the base 1. The suitable dimensioning, for this purpose, the compartment 27, the cell 68 , the wall 26 and the rim 69 is a normal skill

of a person skilled in the art.

  To ensure the fixing of each cover 2 on the base 1 in the determined position defined above, may be provided various fixing means which has been illustrated an embodiment

particularly simple.

  According to this embodiment, the plate 59 carries integrally, in its edge zone 64, respectively in the immediate vicinity of each edge zone 62, two tabs 70 mutually symmetrical with respect to the plane 32 and having, when viewed in section through a transverse plane, the shape of a bracket having a first branch projecting under the lower face 61 of the plate 59 and perpendicular to this face 61, to which it is connected, and a second branch parallel to the face 61 to which it is connected by the first branch and forming

  a protrusion transverse to the edge 64.

  To receive the two tabs 70, each zone 15 of the base 1 has, respectively on either side of the compartment 27, two holes 71 passing through the base 1 of its upper face 16 to its lower face 17, these two holes 71 being mutually symmetrical with respect to the respective plane 32 and arranged with respect to the latter in an identical manner to the tabs 70. The tabs 70 and the holes 71 are dimensioned, in a manner easily determinable by a person skilled in the art, so that the we can introduce the legs 70 by their second branch in the holes 71 by placing the plate 59 perpendicularly to the base 1, then fold the plate 2 by rotating it by the tabs 70 in the holes 71 to bring its underside 61 in flat contact with the upper face 16 of the base 1, the second legs of the legs 70 then being housed under the lower face 17 of the base 1 to ensure the retention of

  cover 2 in the immediate vicinity of the singing area 64.

  Furthermore, along the edge zone 65 are arranged two hooks 71 also mutually symmetrical with respect to the plane 32

  and projecting under the lower face 61 of the plate 59.

  These two hooks 71 are positioned, easily determinable by a person skilled in the art, so that during the above folding, they snap elastically on the edge 18 of the base 1, in a longitudinal zone of this song 18 transversely opposite the zone thereof corresponding to the edges 31

  compartments 27 of the cells 20.

  A person skilled in the art will readily understand how the assembly of a fireworks firing device is carried out when using the

  grappling device according to the invention.

  This assembly can be carried out while the base 1 is already fixed on the frame 7 of the battery 4 mortars, whose tubes 5 contain the bombs 8, or before mounting the base 1 on the frame 7 and introduction of bombs

8 in the tubes 5.

  The covers 2 being initially assumed disjoint from the base 1, is placed in the compartment 28 of a first cell 20 the free end of a wick 9, corresponding to the bomb 8 to be associated with the cell 20, in taking care of overlapping by the zone 29 of this wick 9 the edges 30 and 31. If the cell thus treated 20 corresponding to one of the end zones 15 and is intended to further receive the free end 57 of the igniter cord 58, the free end 57 is disposed identically

at the free end 10.

  Then, depending on whether it is an intermediate zone or an extreme zone, it is placed in each of the channels 33 opening into the compartment 28 considered, or in the single channel 33 opening into this cell 28, a delay pyrotechnic 3 suitably selected taking care to place the longitudinally central section 49 of its outer peripheral face in the hole constituting the central section 35 of the

channel 33.

  Then, the corresponding lid 2 is presented by orienting its plate 59 perpendicularly to the base 1 so as to introduce into the holes 71 the two tabs 70 and then the lid 2 is folded onto the base 1 as described above. , which automatically causes

  snapping hooks 71 on the edge 18 of the base.

  During this movement, the wick 9 and, where appropriate, the igniter cord 58 are trapped in the cell 20 and the free end 10 of the wick 9, as well as, if appropriate, the free end 57 of the igniter cord 58 , are placed directly or almost directly

  S look at the fire return cone 56 or each associated delay 3.

  During firing, initiated by means of the igniter cord 58, the wick 59 corresponding to the same cell 20 as the cord 58 and the pyrotechnic composition 55 of the delay 3 opening into this cell are simultaneously ignited. The corresponding bomb 8 is drawn and, after a delay depending on the pyrotechnic delay 3, it simultaneously ignites the wick 9 of the bomb 8 located in the immediately adjacent tube 5 and the pyrotechnic composition 55 of the delay 3 longitudinally following. The phenomenon repeats itself until the last extreme zone 15 o only a wick 9 is lit, the aforementioned face 46 prohibiting at this level the fire exit from the closed assembly defined by the cells 20 and 68 as well as by the faces internal peripherals 54 of the bodies 47, as well as at the level of the

  extreme zone 15 receiving the igniter cord 58.

  In order to ensure the reliable operation of the device, it is preferable to prevent the fire from being transmitted directly from one cell 20 to the other, without passing through the composition.

  pyrotechnic 55 of the delay 3 interposed between these cells.

  For this purpose, there is provided in the illustrated example, between two consecutive zones 15 respectively, a deflector relief in the form of a transverse rib 72 projecting on the upper face 16 of the base 1, over the entire dimension transverse thereof, that is to say from each of the longitudinal zones of edge to the hole defining the central section 35 of the channel 33 connecting the cells 20 of the two zones 15 considered, this rib 72 being further interrupted at level of the associated hole 19 to allow the passage of the nail head 11 respectively corresponding. At this hole and at the hole defining the central section 35 of the channel 33, the continuity of the dam opposing the direct passage of the fire is ensured respectively by the head

  nail 11 and the body 47 of the delay 3.

  Naturally, other means could be provided for this purpose

  without departing from the scope of the present invention.

  In general, this one is susceptible of numerous variants

  without so much as leaving its frame.

  These variants can relate not only to the number of cells 20 of the base 1, naturally linked to that of the tubes 5 of the battery 4, but also to the practical design of the base 1,

  pyrotechnic delays 3 and covers 2.

  ME NDIffCA TWONS 1. Apparatus for grappling fireworks (8), each of which has a wick (9), comprising a base (1) in the form of a strip that is clean on the one hand to be fixed along a battery ( 4) of mortars (5) each of which is intended to receive a respective firework bomb (8) and secondly to receive integrally a free end (10) of each wick (9), pyrotechnic delays (3). ) connecting the free ends (10) of the wick (9) in pairs and a free end (57) of an igniting cord (58) for firing the bombs (8) via the delays (3) and wicks (9), characterized in that the base (1) comprises a plurality of transverse cells (20) for receiving a respective free end (10) wick (9), distributed longitudinally at a rate of cell (20) by free end (10) of wick (9) and opening in the same longitudinal face (16) of the base (1), longitudinal channels (33) for receiving a respective pyrotechnic delay (3) connecting the cells (20) in pairs and opening into said face (16), and means (71, 18) for fixing cover means (2) on said face (16), in that there are further provided cover means (2), comprising fixing means (70, 74) adapted to cooperate with said fastening means (71, 18) of the base (1 ) to ensure attachment of the cover means (2) on said face (16) in a position in which they define with the cells (20) and the channels (33) a closed assembly while clearing a respective passage for the wicks ( 9) and the igniter cord (58), and in that the cells (20) and the channels (33) and / or the cover means (2) are shaped so that when the cover (2) is fixed on said face (16), it integrally traps a free end (10) of wick (9) in each cell (20), a delay pyrotechnic device (3) in each receiving channel (33) and a free end (57) of ignition cord (58) in one of the

  cells (20) in a pyrotechnic continuity relationship.

  2. Device according to claim 1, characterized in that the

cells (20) are identical.

  3. Device according to any one of claims 1 and 2,

  characterized in that the receiving channels (33) are identical.

  4. Device according to any one of claims 1 to 3,

  characterized in that the cover means (2) comprises a

cover (2) by levol (20).

  5. Device according to claim 4, characterized in that the covers (2) are mutually identical.

  6. Device according to any one of claims 1 to 5,

  characterized in that the fastening means (71, 18, 70, 74) are reversible.

  7. Device according to any one of claims 1 to 6,

  characterized in that the fastening means (71, 18, 70, 74) comprise

  latching means (71, 18, 70, 74).

  8. Device according to any one of claims 1 to 7,

  characterized in that the receiving channels (33) and / or the cover means (2) comprise mutually opposite transverse shoulders (40, 50), with longitudinal stop for the delays

pyrotechnics (3).

  9. Device according to any one of claims 1 to 8,

  characterized in that the cells (20) and / or the cover means (2) comprise baffle retention means (26, 69).

  the free end (10) of wick (9) respective.

  10. Device according to any one of claims 1 to 9,

  characterized in that the receiving channels (33) are arranged in a

same longitudinal alignment (37).

  11. Device according to any one of claims 1 to 10,

  characterized in that said face (16) and / or the cover means (2) have transverse deflector reliefs (72) between the cells

  (20), outside the reception channels (33).

  12. Device according to any one of claims 1 to 11,

  characterized in that the base (1) and the cover means (2)

are made of synthetic material.

  13. Pyrotechnic delay for use in conjunction with

  a device according to any one of claims i to 12, characterized

  in that it comprises a longitudinal tubular body (47) internally lined with a pyrotechnic delay composition (55), open at its transverse ends (53) and having externally an immobilization conformation by the base (1) and the means forming

cover (2).

  14. Pyrotechnic delay according to claim 13, characterized in that, to cooperate with the transverse shoulders (40, 50) of the receiving channels (33) and / or cover means (2) of a device according to claim 8 the tubular body (47) has

  mutually opposite transverse shoulders (50).

  15. Pyrotechnic delay according to any of the

  claims 13 and 14, characterized in that at the level of each

  end of the tubular body (47), the pyrotechnic delay composition

  (55) has a reproduction cone (56).

  16. Pyrotechnic delay according to any of the

  Claims 13 to 15, characterized in that the tubular body (47) is

  metallic. 17. A fireworks shooting device, comprising a battery (4) mortars (5) mutually juxtaposed longitudinally, characterized in that it comprises a grappling device (1, 2) according to any one of

  Claims 1 to 12, the base (1) of which is fixed along the battery (4)

of mortars (5).

  18. Device according to claim 17, characterized in that it further comprises fireworks (8) each of which is housed in a respective mortar (5) and has a wick (9), a free end (10). is engaged in a respective cell (20), an igniter cord (58), a free end (57) is engaged in a cell (20), and pyrotechnic delays (3) according to any one of

  claims 13 to 16 each of which is housed in a receiving channel

  (33) respective, the cover means (2) being fixed on the base (1) by said fixing means (71, 18, 70, 74) and holding on the base (1) the free ends (10, 57) wicks (9) and igniter cord

  (58) and pyrotechnic delays (3).