FR2837318A1

FR2837318A1 - Muffling device for snare drum comprises lower resonance skin

Info

Publication number: FR2837318A1
Application number: FR0207396A
Authority: FR
Inventors: Charles Bevand
Original assignee: MEDIAPLAST
Current assignee: MEDIAPLAST
Priority date: 2002-03-12
Filing date: 2002-06-12
Publication date: 2003-09-19

Abstract

The device (1) for muffling the snares of a drum (6) comprises a lower resonance skin (8b). The snare is constituted by a vibratory assembly constituted by several snare strands. There are means allowing the automatic locking and/or releasing of the vibratory assembly as a function of the skin vibration.

Description

transversale porte la barrette transversale mobile.transverse door mobile transverse bar.

DISPOSITIF AUTOMATIQUE D'ETOUFFEMENT POUR TIMBRE DE AUTOMATIC SMOKING DEVICE FOR STAMP

CAISSE CLAIRESNARE

La presente invention concerne un dispositif d'etouffement automatique pour timbre de caisse claire. La caisse claire est un instrument de percussion tres repandu avec une place importante dans beaucoup de sections rythmiques. Wile est utilisee couramment dans la plupart des orchestras de musique. Ces derniers utilisent souvent, dans leur section rythmique, un ensemble de tambour et de cymbale l0 formant ce qu'on appelle une << batterie >>. La caisse claire se differencie des autres tambours par le fait que sa peau inferieure, cite de resonance, est equipee d'un timbre constitue de plusieurs brins metalliques de types << ressorts >> tendus contre ladite peau inferieure de resonance. Lorsque le percussionniste frappe la peau superieure de ['instrument, la peau inferieure l 5 qui se situe a ['oppose se met a vibrer par l'effet de resonance. Ainsi, le timbre The present invention relates to an automatic choke device for snare drum. The snare drum is a very popular percussion instrument with an important place in many rhythm sections. Wile is commonly used in most music orchestras. The latter often use, in their rhythm section, a drum and cymbal ensemble 10 forming what is called a "battery". The snare drum differs from the other drums in that its lower skin, called resonance, is equipped with a stamp consisting of several metal strands of "spring" types stretched against said lower skin resonance. When the percussionist strikes the upper skin of the instrument, the lower skin at the opposite end vibrates by the resonance effect. So, the stamp

etant plaque contre la surface de la peau, cite de resonance, se met a vibrer. being plate against the surface of the skin, quotes resonance, starts to vibrate.

L' inconvenient des systemes habituels est que le timbre vibre, meme lorsque le musicien ne joue pas de la caisse claire, si un son est emis par un autre instrument a proximite de ladite caisse claire et dont la frequence emise fait entrer la peau en vibration en produisant un son parasite. Ceci dit, le musicien a la possibilite de couper le son parasite grace a des moyens manuels connus sur la plupart des caisses claires, qui consistent a detendre le timbre, grace a un levier situe sur le cote de ['instrument, et ainsi eloigner les brins de la peau inferieure. Ce systeme a ete prevu pour pouvoir jouer de la caisse claire sans le son du timbre qui lui donne une couleur de son, selon les The disadvantage of the usual systems is that the timbre vibrates, even when the musician does not play the snare drum, if a sound is emitted by another instrument near said snare whose frequency emits the skin into vibration producing a parasitic sound. That said, the musician has the possibility to cut the parasitic sound thanks to manual means known on most snare drums, which consist in relaxing the timbre, thanks to a lever located on the side of the instrument, and thus to distance the strands of the lower skin. This system was intended to be able to play the snare drum without the sound of the timbre which gives it a color of sound, according to the

desire du musicien.desire of the musician.

L'invention consiste a remedier de maniere automatique aux problemes de sons parasites emis par le timbre en reaction des sons environnants. Ainsi le timbre pour caisse claire de ['invention est equipe d'un dispositif d'etouffement. Le timbre est constitue par un ensemble vibratoire constitue de un ou plusieurs brine, et est caracterise en ce qu'il comprend des moyens permettant de bloquer et/ou de liberer ltensemble vibratoire en fonction de la vibration de la peau inferieure de resonance uniquement lorsque l'utilisateur frappe la peau superieure de ['instrument. Lorsque l'utilisateur ne joue pas, le(s) brins de timbre vent bloques contre la peau The invention consists in automatically remedying the problems of parasitic sounds emitted by the tone in reaction of the surrounding sounds. Thus the snare drum of the invention is equipped with a choke device. The patch is constituted by a vibratory assembly consisting of one or more strands, and is characterized in that it comprises means for blocking and / or releasing the vibratory assembly according to the vibration of the lower resonance skin only when the The user strikes the upper skin of the instrument. When the user does not play, the wind strand (s) blocks against the skin

inferieure a ['aide d'une piece d'appui qui etouffe les vibrations du timbre. inferior with the help of a piece of support which stifles the vibrations of the stamp.

Les bruits parasites etant emis par le timbre et ses vibrations, le fait de bloquer ledit timbre et d'etouffer ses vibrations empeche celui-ci d'emettre The parasitic noises being emitted by the timbre and its vibrations, the fact of blocking said stamp and of smothering its vibrations prevents it from emitting

des bruits parasites quand le musicien ne joue pas. noise when the musician does not play.

Selon des caracteristiques complementaires, le dispositif d'etouffement est constitue par un ensemble comprenant au moins une barrette transversale mobile, solidaire d'au moins une piece d'appui et en ce que ['ensemble etouffoir est sollicite par un systeme elastique de facon a ce qu'en position de repos, la barrette transversale mobile soit en appui sur ['ensemble vibratoire et a ce que la piece d'appuis soit en appui sur la peau According to additional features, the choke device is constituted by an assembly comprising at least one movable transverse bar secured to at least one support piece and in that the damper assembly is biased by an elastic system in such a way that in the rest position, the movable transverse bar is supported on the vibratory assembly and that the support piece bears on the skin

inferieure de resonance.lower resonance.

Selon d'autres caracteristiques complementaires, ['ensemble etouffoir est constitue par un etrier pivotant autour d'un axe transversal porte par un cadre support, l'etrier etant en forme de U dont les deux branches longitudinales portent chacune une ou plusieurs pieces d'appui, tandis que la According to other complementary features, the damper assembly is constituted by a bracket pivoting about a transverse axis carried by a support frame, the stirrup being U-shaped, the two longitudinal arms each carrying one or more pieces of support, while the

branche transversale porte la barrette transversale mobile. transverse branch carries the mobile transverse bar.

D'autres caracteristiques et avantages de ['invention se degageront de Other features and advantages of the invention will be

la description qui va suivre en regard des dessins annexes qui ne vent donnes the following description with reference to the accompanying drawings which do not

qu'a titre d'exemples non limitatifs. as non-limiting examples.

Les figures 1 a 9 illustrent un premier mode de realisation de I' invention. La figure 1 est une vue en perspective de la caisse claire, munie du Figures 1 to 9 illustrate a first embodiment of the invention. FIG. 1 is a perspective view of the snare drum equipped with the

dispositif automatique d'etouffement. automatic choking device.

La figure 2 est une vue de dessous de la caisse claire equipee du FIG. 2 is a view from below of the snare drum equipped with

dispositif automatique d'etouffement. automatic choking device.

Les figures 3 et 4 representent respectivement la face ext;erieure (figure 3) et la face en contact avec la peau (figure 4) du dispositif d'etouffement. La figure 5 represente la piece principale du dispositif en vue de dessous. La figure 6 represente une des deux pieces intermediaires du dispositif. La figure 7 represente dans une vue laterale une des branches Figures 3 and 4 show respectively the outer face (Figure 3) and the face in contact with the skin (Figure 4) of the smothering device. Figure 5 shows the main piece of the device in view from below. Figure 6 shows one of the two intermediate parts of the device. Figure 7 shows in a side view one of the branches

longitudinales du dispositif.longitudinal dimensions of the device.

La figure 8 represente, en vue de dessus, le mode de construction FIG. 8 represents, in top view, the method of construction

prefere du dispositif d'etouffement. favorite of the choking device.

Les figures 9a, 9b et 9c representent une extremite du cadre en vue Figures 9a, 9b and 9c show an end of the frame in view

de dessus, de cote et de face.from above, from side and from face.

La figure 10 est une vue similaire a la figure 2 representant une FIG. 10 is a view similar to FIG.

variante d'execution de ['invention. alternative embodiment of the invention.

Les figures 11 et 12 vent des vues laterales schematiques montrant comment fonctionne ['invention, la figure 11 montre le dispositif d' etouffement dans sa position d' etouffement, tandis que la figure 12 le FIGS. 11 and 12 show schematic side views showing how the invention works, FIG. 11 shows the choke device in its choking position, while FIG.

monke dans sa position de non-etouffement. monke in his position of non-suffocation.

Les figures 13 a 16 illuskent une variante de realisation. Figures 13 to 16 illustrate an alternative embodiment.

La figure l3 est une vue de dessus.Figure 13 is a view from above.

La figure 14 est une vue de dessous. Figure 14 is a view from below.

Les figures 15 et 16 vent des vues montrant comment fonctionne la variante. Les figures 17 et 18 vent des vues laterales montrant une autre variante adaptee au premier mode de realisation (figure 17) et a la variante Figures 15 and 16 show views showing how the variant works. FIGS. 17 and 18 show side views showing another variant adapted to the first embodiment (FIG. 17) and variant

(figure (18).(Figure (18).

L'invention concerne un dispositif automatique d'etouffement (1) pour caisse claire. Ladite caisse (6) est formee par un fut cylindrique (7), une peau superieure (8a), une peau inferieure de resonance (8b), deux cerclages (9a, 9b) identiques opposes l'un a l'autre, plusieurs systemes mecaniques (100) reliant les deux cerclages. Les systemes mecaniques (100) vent constitues de plusieurs filetages servant a rapprocher les deux cerclages (9a, 9b) l'un de l'autre pour permettre le reglage des peaux, celles-ci etant pincees entre les The invention relates to an automatic device for suffocation (1) for snare drum. Said body (6) is formed by a cylindrical body (7), an upper skin (8a), a lower resonance skin (8b), two identical straps (9a, 9b) opposite one another, several systems mechanics (100) connecting the two hoops. The mechanical systems (100) consist of several threads used to bring the two strings (9a, 9b) of each other to allow the adjustment of the skins, the latter being clamped between the

bords lateraux du fut cylindrique (7) et les cerclages (9a, 9b). side edges of the cylinder (7) and the straps (9a, 9b).

Le dispositif d'etouffement automatique (1) pour timbre de caisse claire (6) destine a eke place en appui sur la peau inferieure de resonance (8b) The automatic snuff device (1) for snare drum (6) for eke place in support on the lower resonance skin (8b)

est constitue par une piece principale en U portent la reference generale (2). is constituted by a main piece in U carry the general reference (2).

Le dispositif d'etouffement forme par la piece principale (2) est destine a etre place sous ['instrument (6) c'est-a-dire en contact avec la peau inferieure de resonance (8b) qui, elle-meme, est equipee d'un timbre (5) forme de un ou plusieurs brins (51) tendus par ses deux extremites opposees (52a, 52b) disposees avantageusement au centre de la peau inferieure de The smothering device formed by the main piece (2) is intended to be placed under the instrument (6), that is to say in contact with the lower resonance skin (8b), which itself is equipped with a stamp (5) forming one or more strands (51) stretched by its two opposing ends (52a, 52b) advantageously arranged in the center of the lower skin of

resonance et plaques sur celle-ci.resonance and plates on it.

Selon ['invention, la partie active du dispositif d'etouffement automatique (1) est avantageusement placee sensiblement au niveau de la moitie du timbre (5); toutefois, la caisse claire (6) peut etre equipee de plusieurs dispositifs, ou meme etre placee de maniere dissymetrique par According to the invention, the active part of the automatic smothering device (1) is advantageously placed substantially at the level of half of the patch (5); however, the snare drum (6) can be equipped with several devices, or even be placed asymmetrically by

rapport a la longueur du timbre (5). to the length of the stamp (5).

Selon une caracteristique complementaire et avantageuse de lO ['invention, la piece principale en forme de U (2) est fixee a un cadre (4) According to a complementary and advantageous feature of the invention, the U-shaped main piece (2) is attached to a frame (4).

entourant le timbre (5) sans le toucher pour ne pas gener son fonctionnement. surrounding the stamp (5) without touching it so as not to disturb its operation.

Ledit cadre (4) est constitue de deux poutres longitudinales paralleles (41a, Said frame (4) consists of two parallel longitudinal beams (41a,

41b) et de deux poutres d'extremite transversales (42a, 42b). 41b) and two transverse end beams (42a, 42b).

Selon le mode prefere de ['invention, le timbre (5) est fixe aux deux poutres d'extremite transversales (42a, 42b) du cadre (4). Le timbre (5) est done fixe au cadre (4) par ses deux extremites (52a, 52b). Afin de permettre un reglage de la tension audit timbre (5), il est prevu des lumieres (43) amenagees dans chacune des poutres d'extremite transversales (42a, 42b) de chacune des poutres longitudinales (41), ou dans chacune des extremites transversales, comme le montre la figure 8, pour permettre aux poutres d'extremite transversales (42a, 42b) de coulisser de l'interieur (INT) vers l'exterieur (EXT) du cadre et inversement. Le deplacement selon (F) des extremites transversales du cadre permet le reglage en tension du timbre fixe According to the preferred embodiment of the invention, the stamp (5) is fixed to the two transverse end beams (42a, 42b) of the frame (4). The stamp (5) is therefore fixed to the frame (4) by its two ends (52a, 52b). In order to allow adjustment of the tension to said stamp (5), there are provided lights (43) arranged in each of the transverse end beams (42a, 42b) of each of the longitudinal beams (41), or in each of the ends. as shown in FIG. 8, to allow the transverse end beams (42a, 42b) to slide from the inside (INT) to the outside (EXT) of the frame and vice versa. The displacement according to (F) of the transverse ends of the frame allows the adjustment in tension of the fixed stamp

sur lesdites extremites transversales (42a, 42b) du cadre support (4). on said transverse ends (42a, 42b) of the support frame (4).

Toutefois, le deplacement selon (F) des extremites transversales, peut etre obtenue par tout type de procede de coulissement, sans pour autant sortir du However, the displacement according to (F) of the transverse ends, can be obtained by any type of sliding process, without departing from the

champ de ['invention.field of the invention.

Selon un second mode de realisation, le cadre (4) peut etre libre par rapport au timbre (5) et uniquement retenu par les moyens de fixation (53) meme du timbre (5), de facon connue en soi, qui permettent de le tendre ou de le detendre, ces moyens etant generalement constitues par des sangles, cables ou aukes, qui passent par des lumieres d'extremite (44) amenagees According to a second embodiment, the frame (4) can be free with respect to the stamp (5) and only retained by the fixing means (53) even of the stamp (5), in a manner known per se, which allow the to stretch or relax, these means being generally constituted by straps, cables or aukes, which pass through end lights (44) arranged

dans les poutres d'extremites transversales (42a, 42b) du cadre (4). in the transverse end beams (42a, 42b) of the frame (4).

Selon un auke mode de realisation de ['invention, le timbre (5) peut eke fixe uniquement sur une des extremites transversales du cadre ou meme coupe pour n'avoir qu'une partie de timbre qui sera fixee au cadre ou sur une According to another embodiment of the invention, the stamp (5) can eke fixed only on one of the transverse ends of the frame or even cut to have only part of the stamp that will be attached to the frame or on a

partie du cerclage, comme le montre la figure 10. part of the strapping, as shown in Figure 10.

Le dispositif d'etouffement (1) pour timbre (5) de caisse claire est done constitue par un cadre support (4) et d'une piece principale en forme de U ou etrier (2) qui est mobile en pivotement dont les deux branches longitudinales (22a, 22b) portent a l'une de leur extremite (23a, 23b), au moins une piece d'appui, appelee barrette transversale mobile (21). La ou les barrettes transversales mobiles (21) vent constituees par une plaque allongee reliant les deux extremites (23a, 23b) des branches longitudinales (22a, 22b) et sur laquelle on a place une piece secondaire d'etouffement (20) en matiere souple ou rigide qui, en appui sur les brins de timbre, aura pour but The snare device (1) for snare drum (5) is therefore constituted by a support frame (4) and a U-shaped main part or stirrup (2) which is pivotally movable, the two branches of which longitudinal (22a, 22b) bear at one of their end (23a, 23b), at least one support piece, called mobile transverse bar (21). The movable transverse web or bars (21) constituted by an elongated plate connecting the two ends (23a, 23b) of the longitudinal branches (22a, 22b) and on which a secondary subassembly piece (20) of flexible material has been placed. or rigid which, in support on the strands of stamp, will aim

d'etouffer les bruits parasites emis par les vibrations du timbre (5). to smother the parasitic noise emitted by the vibrations of the timbre (5).

Selon une caracteristique de ['invention, l'etrier (2) qui porte la barrette transversale (21) comprenant la piece d'etouffement (20), est articule According to a feature of the invention, the caliper (2) carrying the transverse bar (21) comprising the choke piece (20), is articulated

sur le cadre (4) autour d'un axe transversal (XX'). on the frame (4) around a transverse axis (XX ').

Par ailleurs, chacune des deux branches longitudinales (22a, 22b) comprend une saillie d'appui (25a, 25b) constituent une piece ou une partie destinee a etre en contact avec la peau inferieure de resonance (8b); la mise en contact de ces saillies d'appui se faisant grace a un systeme elastique tel Moreover, each of the two longitudinal branches (22a, 22b) comprises a bearing projection (25a, 25b) constituting a part or a part intended to be in contact with the lower resonance skin (8b); the contacting of these bearing protrusions is done through an elastic system such

qu'un ressort (24) qui agit sur l'etrier. a spring (24) acting on the caliper.

Selon le mode prefere de ['invention, la saillie (25) est une partie constituante de la branche longitudinale (22a, 22b) avec laquelle elle fait corps, mais cette saillie pourrait aussi bien eke une piece rajoutee. Lesdites saillies (25a, 25b) vent placees de maniere a ce qu'elles soient According to the preferred embodiment of the invention, the projection (25) is a constituent part of the longitudinal branch (22a, 22b) with which it forms a body, but this projection could also eke a piece added. Said protrusions (25a, 25b) are positioned so that they are

en appui sur la peau inferieure de resonance (8b) de la caisse claire (6). resting on the lower resonance skin (8b) of the snare drum (6).

Chacune des saillies (25a, 25b) qui constituent une piece de contact solidaire de lekier (4) est un element de reactivite qui a pour but de reagir a lO chaque coup de frappe sur la peau superieure de resonance (8a) qui entraine la vibration de la peau inferieure (8b) et par reaction romps son contact avec la surface de la peau inferieure, ce qui provoque l'eloignement de la barrette kansversale mobile (21). Il en resulte une liberation du timbre (5) et permet Each of the protrusions (25a, 25b) which constitute a contact piece integral with the lekier (4) is a reactivity element which is intended to react to each punching stroke on the upper resonance skin (8a) which causes the vibration of the inferior skin (8b) and by reaction breaks its contact with the surface of the lower skin, which causes the removal of the mobile transverse bar (21). This results in a release of the stamp (5) and allows

ainsi son action vibratoire.thus its vibratory action.

lS Chaque branche longitudinale (22) porte sur la partie opposee a la saillie (25) un element ressort (24) qui plaque ladite saillie sur la peau et, du Each longitudinal branch (22) bears on the portion opposite the projection (25) a spring element (24) which projects said projection on the skin and

meme coup, la piece d'appui (21) sur les brins (51) du timbre (5). same time, the support piece (21) on the strands (51) of the stamp (5).

Selon le mode prefere, l'ekier (2) est monte sur le cadre, non pas directement, mais par l'intermediaire de deux pieces intermediaires (3a, 3b) Chacune des pieces intermediaires (3a, 3b) est fixee sur chacune des poukes longitudinales correspondantes (41a, 41b) du cadre (4), et est constituee par un corps creux dans lequel les branches longitudinales (22a, 22b) de l'ekier (2) peuvent se deplacer de haut en teas par pivotement autour de l'axe de rotation (X,X'). Par ailleurs, chaque piece intermediaire (3) est munie d'une butee (31) pour limiter le deplacement vers le haut de chaque branche According to the preferred mode, the ekier (2) is mounted on the frame, not directly, but through two intermediate pieces (3a, 3b) Each of the intermediate pieces (3a, 3b) is fixed on each of the poukes longitudinal members (41a, 41b) of the frame (4), and is constituted by a hollow body in which the longitudinal branches (22a, 22b) of the ekier (2) can move high and teas by pivoting around the axis of rotation (X, X '). Moreover, each intermediate piece (3) is provided with a stop (31) to limit the upward movement of each branch

longitudinale (22a, 22b) audit ekier (2). longitudinal (22a, 22b) ekier audit (2).

Le systdme peut etre desactive par le soul2vement manuel de la barrette transversale mobile (21) par rapport a l'axe de rotation (X,X'), a ['aide d'un levier, une cale, ou tous autres moyens, sans pour autant sortir du The system can be deactivated by manual lifting of the movable transverse bar (21) with respect to the axis of rotation (X, X '), by means of a lever, a shim, or any other means, without however, to leave the

champ de ['invention.field of the invention.

Selon le mode prefere, la barrette transversale mobile d'etouffement n'est pas directement constituee par l' etrier (2) mais fait partie d' une piece de prolongement d'etouffement (200) montee pivotante sur l'extremite des deux branches longitudinales (22a, 22b). Cette pitce de prolongement est constituee par une plaque allongee, comprenant a son extremite la barrette transversale d'etouffement (210) destinee a eke en contact avec le timbre, tandis que ses bordures laterales comprennent deux plots en saillie (250a, 250b), constituent les saillies d'appui destinees a etre en contact avec la peau inferieure de resonance. On a compris que, selon ce mode d' execution, l'etrier (2) ne comprend pas la barrette transversale d'etouffement qui est portee par le prolongement d'etouffement (200), ni les saillies d'appui (25a, 25b) qui vent portees (250a, 250b) par cette meme piece de prolongement. Selon ce second mode de realisation de la barrette transversale mobile de ['invention, il est possible d' effectuer des reglages pour permettre a l' organe d' etouffement d'etre plus ou moins en pression sur le timbre et de faciliter ou d'empecher le soulevement de la barrette transversale de ['invention en deplacant l'axe (Y,Y') le long des deux branches longitudinales (22a, 22b). On a aussi la possibilite de deplacer, sur ['ensemble constituent la pitce d'appui articulee (200), l'axe de rotation (Y,Y') le long des branches longitudinales (220a, 220b) du cadre (200) ou le long des cotes lateraux (220a, 220b) dans le cas d'une plaque. Selon un autre mode de realisation de ['invention, illustre sur les figures 15, 16, 17, le syst2me elastique sollicitant la mise en action de l'etouffement est constitue par un ou plusieurs contrepoids situes sur la ou les pieces intermediaires ou sur un prolongement, par exemple, amenage a ['oppose de la barre transversale mobile (21), par rapport a l'axe de rotation (X,X'). Ledit contrepoids (50) est done mobile en rotation par rapport a l'axe (X,X'). Le contrepoids, a tendance a descendre et, par rotation, par rapport a l' axe (X,X'), fait monter l' extremite opp osee, afin que la barre transversale mobile (21) munie de sa piece secondaire (20) soit en contact avec les brins According to the preferred embodiment, the mobile transverse bar is not directly constituted by the caliper (2) but is part of a choking extension piece (200) pivotally mounted on the end of the two longitudinal branches. (22a, 22b). This extension pitce is constituted by an elongate plate, comprising at its extremity the transverse bar of smothering (210) intended to eke in contact with the patch, while its lateral edges comprise two projecting studs (250a, 250b), constitute the bearing projections intended to be in contact with the lower resonance skin. It is understood that, according to this embodiment, the caliper (2) does not include the transverse bar of smothering which is carried by the extension of suffocation (200), nor the bearing projections (25a, 25b ) which are carried (250a, 250b) by this same extension piece. According to this second embodiment of the mobile transverse bar of the invention, it is possible to make adjustments to allow the choke member to be more or less in pressure on the patch and to facilitate or prevent the lifting of the transverse bar of the invention by moving the axis (Y, Y ') along the two longitudinal branches (22a, 22b). It is also possible to move the axis of rotation (Y, Y ') along the longitudinal branches (220a, 220b) of the frame (200) on the assembly constituting the articulated support pit (200) or along the lateral dimensions (220a, 220b) in the case of a plate. According to another embodiment of the invention, illustrated in FIGS. 15, 16 and 17, the elastic system requiring the actuation of the smothering is constituted by one or more counterweights located on the intermediate part or parts, or extension, for example, feeding the opposite of the movable transverse bar (21), relative to the axis of rotation (X, X '). Said counterweight (50) is therefore rotatable relative to the axis (X, X '). The counterweight, tends to descend and, by rotation, relative to the axis (X, X '), raises the oppose end, so that the movable transverse bar (21) provided with its secondary part (20) is in contact with the strands

(51) du timbre (5).(51) of the stamp (5).

Selon cet autre monde de realisation, la pression de la barrette transversale mobile (21) sur les brins (51) du timbre (5), emise par le conkepoids situe a ['oppose par rapport a l'axe (X,X') comporte des moyens de reglages par coulissement (C) dudit/desdits contrepoids (50) sur son support se rapprochant ou s'eloignant de l'axe de rotation (X,X'). Les moyens de coulissements (C) peuvent etre de tous types, sans pour autant sortir du According to this other embodiment, the pressure of the mobile transverse bar (21) on the strands (51) of the stamp (5), emitted by the conkeweight located at ['opposes with respect to the axis (X, X') comprises sliding adjustment means (C) of said counterweight (50) on its support moving towards or away from the axis of rotation (X, X '). Sliding means (C) can be of any type, without departing from

champ de ['invention.field of the invention.

L'invention peut aussi etre munie d'un second contrepoids (50) a ['oppose, par rapport a l'axe (X,X'), du premier contrepoids precise, afin d'obtenir un reglage le plus precis possible en deplacant les deux contrepoids le long de leur support respectif vers l'interieur, c'est a dire vers l' axe (X,X') The invention may also be provided with a second counterweight (50) opposite the axis (X, X ') of the first precise counterweight, in order to obtain the most precise adjustment possible by moving the counterweight. the two counterweights along their respective support towards the inside, ie towards the axis (X, X ')

ou vers l'exterieur, c'est-a-dire vers les extremites de leur support respectif. or outward, that is to say toward the ends of their respective support.

Ledit second contrepoids peut done avoir le role de frein pour ralentir le retour de la barrette transversale mobile sur les brins de timbre. Il est ainsi place sur la barrette transversale mobile, quel que soit son mode de Said second counterweight can therefore have the role of brake to slow down the return of the mobile transverse bar on the strands of stamp. It is thus placed on the mobile transverse bar, whatever its mode of

realisation, ou alors place sur les branches longitudinales (22a, 22b). realization, or place on the longitudinal branches (22a, 22b).

Selon un autre mode de realisation non represente de ['invention, la barrette transversale peut etre ralentie lors de son retour sur les brins de timbre a ['aide, par exemple, de pente(s) amenagee(s) a 1'interieur d'une ou de chaque piece intermediaire, ou sur le cadre lui-meme. Tous types de << freins retour >> connus peuvent etre appliques, sans pour autant sortir du According to another embodiment not shown of the invention, the transverse bar can be slowed down when it returns to the stamp strands by means of, for example, inclined slope (s) inside the one or each intermediate piece, or on the frame itself. All types of known "return brakes" can be applied, without departing from

champ de ['invention.field of the invention.

Selon un autre mode de realisation, le dispositif automatique d'etouffement (1) peut etre applique sur un timbre different des timbres classique comme, par exemple, celui illustre a la figure 10, qui montre un timbre constitue d'une succession de brins (51) fixes a une seule de leurs extremites, tandis que l'extremite libre de chacun des brins est en appui sur la peau de resonance. Selon ce mode de realisation, le timbre (5) est en contact avec la peau grace au dispositif de ['invention qui plaque les brins de timbre sur la peau. Ledit nouveau timbre, que l'on pourrait appeler << moitie de timbre >>, peut etre fabrique avec toutes sortes de materiaux. Ainsi, les brins pourraient etre realises grace a des tiges en acier ou toute autre matiere tel que du plastique, sans pour autant sortir du champ de ['invention. On constate sur ce mode de realisation du timbre que les brins peuvent ne pas s'etendre sur toute la largeur de la peau de resonance, mais seulement sur According to another embodiment, the automatic smothering device (1) can be applied to a stamp different from conventional stamps such as, for example, that illustrated in FIG. 10, which shows a patch consisting of a series of strands ( 51) fixed at one of their ends, while the free end of each of the strands bears on the resonance skin. According to this embodiment, the patch (5) is in contact with the skin thanks to the device of the invention which lays the strands of stamp on the skin. Said new stamp, which could be called "half stamp", can be made with all kinds of materials. Thus, the strands could be made with steel rods or any other material such as plastic, without departing from the scope of the invention. It can be seen in this embodiment of the patch that the strands may not extend over the entire width of the resonance skin, but only on

une partie de celle-ci tel que cela est illustre. a part of it as this is illustrative.

Selon un perfectionnement, qui peut etre une invention en elle-meme, mais qui peut etre avantageusement combine au dispositif automatique d'etouffement selon ['invention, les brins (51) de timbre (5) comportent un revetement anti-adherent ou anti-vibratoire comme, par exemple, un revetement en polytetrafluorethylene, plus connu sous le nom << teflon >>. Bien According to an improvement, which may be an invention in itself, but which can be advantageously combined with the automatic device of suffocation according to the invention, the strands (51) of stamp (5) comprise an anti-adherent or anti-adhesive coating. vibratory such as, for example, a polytetrafluoroethylene coating, better known as "teflon". Well

entendu, la peau du timbre pourrait aussi comporter un tel revetement. heard, the skin of the stamp could also include such a coating.

Pour rajouter un grain particulier au timbre, on peut associer au dispositif d'etouffement une << bruiteuse >>, de type maracas ou autre, qui sera To add a particular grain to the stamp, we can associate with the device of suffocation a "noise", of type maracas or other, which will be

place sur le dispositif meme, sur la barrette transversale mobile, par exemple. place on the device itself, on the mobile transverse bar, for example.

Ladite bruiteuse pourra etre amenagee a ['aide d'un botier de toutes formes possibles dans lequel on aura place des grains de toutes natures, sans pour Said noiser may be arranged with the help of a box of all possible shapes in which we will have placed grains of all kinds, without

autant sortir du champ de ['invention. as far as leaving the field of invention.

Bien entendu, ['invention n'est pas limitee aux modes de realization decrits et representes a titre d'exemples, mats elle comprend aussi tons les Of course, the invention is not limited to the embodiments described and represented by way of examples, but it also includes all

equivalents techniques ainsi que leurs combinaisons. technical equivalents as well as their combinations.

Claims

1-device for suffocation (1) for stamp (5) of snare drum (6), comprising a lower resonance skin (8b), said stamp being constituted by a vibratory assembly constituted by one or more strands (51) of stamps (5), characterized in that it comprises means for automatically blocking and / or releasing the vibratory assembly (5) by

function of the vibration of the lower resonance skin (8b).

2-device for suffocation (1) for stamp (5) of snare drum (6), according to claim 1, characterized in that it is constituted by a damper assembly (2) comprising at least one transverse bar mobile

of suffocation (21) secured to at least one contact piece (25).

3-device for suffocation (1) for stamp (5) of snare drum (6), according to claim 2, characterized in that the whole damper (2) is biased by an elastic system (24) so that in the rest position, the movable transverse bar (21) is resting on the vibratory assembly (5) and the contact piece (25) bears on the lower skin of

resonance (8b).

4- A snare device (1) for snare drum (6) according to claim 3, characterized in that the damper assembly is constituted by a pivoting ekier (2) pivotally mounted on a support frame (4) around 'an axe

transversal (X, X ').

- Device for suffocation (1) for stamp (5) snare drum (6), according to claim 4, characterized in that the caliper is U-shaped, the two longitudinal branches (22a, 22b) each carry a contact piece (25) while the transverse branch carries the transverse bar

mobile choke (21).

6- A snare device (1) for a snare drum (5) according to claim 5, characterized in that the movable transverse bar (5) for smothering (21) forms a secondary choking piece (20). ) in flexible or rigid material which bears on the strands of stamp (5), will aim

to smother the parasitic noise emitted by the vibrations of the timbre (5).

7- Muffling device (1) for snare drum stamp (5) (6),

according to any one of claims 4 to 6, characterized in that the frame

support (4) is constituted by two longitudinal beams (41a, 41b) and two

transverse ends (42a, 42b).

8- Device for suffocation (1) for stamp (5) snare drum (6), according to claim 7, characterized in that the stamp (5) is fixed to

transverse ends (42a, 42b) of the frame (4).

159- Smothering device (1) for snare drum stamp (5),

according to claims 1, 2, 4 and 7, characterized in that the branches

longitudinal members have at their outer ends a transverse axis (Y. Y ') of rotation carrying a movable transverse bar constituted by an elongated plate or a frame with two longitudinal branches (220a, 220b), the outer end of which is provided with a piece transverse extension (210), itself provided with a secondary part (211) of suffocation, in contact with the patch (5), the inner end of the piece being provided with at least two studs (250a, 250b ), or pieces in contact with the skin, the plate or frame (200), the choking piece (211), and the bearing piece (250a, 250b) on the skin constitute an assembly articulated with respect to the axis (Y. Y '), located on the