EP0229746A2 - Return mechanism for an upright piano and means for its application - Google Patents

Return mechanism for an upright piano and means for its application Download PDF

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Publication number
EP0229746A2
EP0229746A2 EP87810035A EP87810035A EP0229746A2 EP 0229746 A2 EP0229746 A2 EP 0229746A2 EP 87810035 A EP87810035 A EP 87810035A EP 87810035 A EP87810035 A EP 87810035A EP 0229746 A2 EP0229746 A2 EP 0229746A2
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EP
European Patent Office
Prior art keywords
pusher
hammer
jack
bar
handle
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Granted
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EP87810035A
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German (de)
French (fr)
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EP0229746B1 (en
EP0229746A3 (en
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Fernand Kummer
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Individual
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Priority to AT87810035T priority Critical patent/ATE89093T1/en
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Publication of EP0229746A3 publication Critical patent/EP0229746A3/en
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
    • G10C3/00—Details or accessories
    • G10C3/16—Actions
    • G10C3/161—Actions specially adapted for upright pianos
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
    • G10C3/00—Details or accessories
    • G10C3/16—Actions
    • G10C3/18—Hammers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
    • G10C9/00—Methods, tools or materials specially adapted for the manufacture or maintenance of musical instruments covered by this subclass

Definitions

  • the upright piano has, compared to the grand piano, the disadvantage of not allowing, when the key is in the low position, after the hammer strikes the string, a new strike with a movement of small amplitude. This is particularly troublesome, for example, when it is necessary to perform trills, especially in "pianissimo".
  • the grand piano on the contrary allows such successions of strikes even when the key is in the low position, with movements of very low amplitude.
  • This advantage of the grand piano is due to its double escapement mechanism. Simpler, the mechanism of the upright piano has only one exhaust.
  • Various unsuccessful attempts have been made to obtain from the upright piano a result analogous to that achieved with the grand piano.
  • the present inventions aim to provide an exhaust device for upright piano, as well as means for implementing such a device, which allows successive strikes fast rope with very small amplitude movements, when the key is in the low position.
  • the device which is the subject of the invention comprises a second exhaust pusher 14.
  • This pusher is fixed, directly or by means of other parts, to the catcher.
  • the pusher extends in the direction of the hammer handle and its tip 15 is at a distance from the hammer handle which is calculated from so that the handle comes to rest against this end at about the moment when the counter-catcher 10 comes to press on the catcher 9. Therefore, even while only slightly raising the key, and even then the amplitude of this movement is insufficient to replace the exhaust pusher 2 under the nut, the second exhaust pusher 14 can act on the hammer handle under the effect of a new pressure on the key.
  • the second exhaust pusher can be rigidly attached to the catcher, in which case it mainly acts as a stop. To make it a true exhaust valve, it should be allowed to tilt so that its end leaves the contact of the handle of the hammer at the end of the stroke, in the same way as the first pusher leaves at the end of its stroke its support under the nut to let the hammer finish its course with its only momentum.
  • the second pusher is mounted on a pin 16 which is itself fixed on the catcher.
  • the axis 16 is a part of a rod 17 which allows attachment to the catcher by means of a clamping piece 18.
  • a stop 19 against which the body of the second pusher abuts.
  • a stop cushion 20 dampens the contact with the stop 19.
  • the height of this stop is adjustable by simply twisting the rod 17.
  • the height of the stop determines the height at which s stop the tip 15 which meets the handle of the hammer.
  • the angle formed by the straight line connecting the axis 16 and the tip 15, on the one hand, and the axis of the hammer handle, on the other hand is approximately straight.
  • the second pusher has a tip 21. This tip 21, like the tip 15, is provided with a felt roller which softens the contact.
  • a trigger stop 22 is fixed on a non-movable part of the piano, on the path that the tip 21 must travel.
  • the stop is placed at an adjustable height. This height is calculated so that the end 21 of the second pusher comes to apply at the end of the race against this stop and slides against it.
  • the second pusher switches around the axis 16 and the tip 15 rises, leaving the handle of the hammer.
  • the second pusher leaves contact with the handle of the hammer at the end of the race. It is enough to slightly release the key so that the second pusher descends, under the action of a spring 24, and is again ready to push back the handle of the hammer, even before the first pusher has returned under the nut. It suffices that the second pusher moves back by the small distance X for the tip 15 to descend again by traversing the distance Y.
  • the length of the second plunger is adjustable: to shorten it, it suffices to push the rod, preferably metallic, which forms the arm which extends in the direction of the hammer handle, into the body of the plunger, which is preferably in wood; traction, on the contrary, causes elongation. It is also possible to fix on the handle of the hammer one or more pieces at the height where the tip 15 of the pusher meets the handle. This is also a way of shortening the distance between the tip 15 of the hammer handle.
  • the stop 22 is a bent rod which is fixed to the celestial bar. This rod is in the same vertical plane as the path of the second pusher. Its lower part, which comes into contact with the tip 21 when the latter is at the end of its travel, is approximately horizontal.
  • the bent rod is preferably inserted into a wooden bar 23.
  • This bar preferably extends over the entire length of the piano and carries all of the angled trigger rods.
  • the fixing of the bar 23 to the celestial bar is done simply by means of an adhesive strip.
  • the height of the angled trigger rod 22 is adjusted by pulling or pushing it down or up, that is to say by pushing it more or less deeply into the bar 23.
  • the stop 22 is a button, similar to the exhaust button.
  • This button is fixed by a screw in a bar 23.
  • the bar 23 is no longer attached here to the celestial bar; it is at the center bar, for example via crosspieces which are not shown in the drawing.
  • Such a construction makes it possible to remove the celestial bar without removing the bar 23, and thus to easily adjust the height of the buttons by means of the screws.
  • the role of the celestial bar is reduced: on the one hand it is not used for fixing the trigger stop, and, on the other hand, it is no longer essential to serve as a fulcrum with a hammer when the main exhaust device is lifted, since the second exhaust pusher 14 is sufficient to fulfill this role.
  • the celestial bar is therefore only a secondary support point and serves mainly as a support for the soft pedal and as a reinforcement and stabilization bar for the entire piano. It may be advantageous to make it thinner, to place it higher (in order to make it easier to access the heads of the stopper adjustment screws) and to fix it by means of a device which makes it easily removable, in view to facilitate adjustment.
  • stops in the form of bent bars with a bar 23 which is not fixed to the celestial bar.
  • the trigger stop 22 is omitted, and the second pusher 14 is simply a stop rocking freely on the axis 16. Such a movable stop already achieves the desired result, but in a less satisfactory.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Stringed Musical Instruments (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Component Parts Of Construction Machinery (AREA)
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Abstract

This device for an upright piano has a second escapement jack (14). This jack is fixed to the check (9). It can swing about a pivot (16). At one end (15) it extends towards the hammer shank (3) and in the other direction has an end (21). A trigger stop (22), in the form of a button, is fixed to a bar (23) above the second jack. After the first jack (2) has thrown the hammer towards the string (4), it leaves its point of support beneath the butt, through the action of the set-off button (8) on the escapement lever (7). If after striking the string the hammer falls back faster than the key (1) rises, the first jack does not move back under the butt (11). The shank of the hammer then falls onto the end (15) of the second jack. It is then possible, even if the key is allowed to rise only very slightly, to throw the hammer back again by means of the second jack, even if the first jack has not moved back under the butt. At its end of travel, the end (21) of the second jack, which rises with the check, meets the stop (22), and the end (15) rises sharply and lets the hammer reach the end of its travel under its own momentum. A spring (24) restores the second jack to position as soon as pressure on the key is relaxed. <IMAGE>

Description

Le piano droit présente, par rapport au piano à queue, l'inconvénient de ne pas permettre, lorsque la touche est en position basse, après que le marteau a frappé la corde, une nouvelle frappe avec un mouvement de faible amplitude. Cela est particulièrement gênant, par exemple, lorsqu'il faut exécuter des trilles, surtout dans les "pianissimo". Le piano à queue permet au contraire de telles successions de frappes même lorsque la touche est en position basse, avec des mouvements de très faible amplitude. Cet avantage du piano à queue est dû à son mécanisme à double échappement. Plus simple, le mécanisme du piano droit ne présente qu'un échappement. Diverses tentatives infructueuses ont été faites pour obtenir du piano droit un résultat analogue à celui qui est atteint avec le piano à queue. Les présentes inventions visent à fournir un dispositif d'échappement pour piano droit, ainsi que des moyens de mise en oeuvre d'un tel dispositif, qui permette des frappes successives rapides de la corde avec des mouvements de très faible amplitude, lorsque la touche est en position basse.The upright piano has, compared to the grand piano, the disadvantage of not allowing, when the key is in the low position, after the hammer strikes the string, a new strike with a movement of small amplitude. This is particularly troublesome, for example, when it is necessary to perform trills, especially in "pianissimo". The grand piano on the contrary allows such successions of strikes even when the key is in the low position, with movements of very low amplitude. This advantage of the grand piano is due to its double escapement mechanism. Simpler, the mechanism of the upright piano has only one exhaust. Various unsuccessful attempts have been made to obtain from the upright piano a result analogous to that achieved with the grand piano. The present inventions aim to provide an exhaust device for upright piano, as well as means for implementing such a device, which allows successive strikes fast rope with very small amplitude movements, when the key is in the low position.

Les inventions sont décrites dans les revendications.The inventions are described in the claims.

Les dessins représentent, à titre d'explication et d'exemples, d'une part un mécanisme de piano droit classique, d'autre part un dispositif et des moyens de mise en oeuvre selon les inventions, selon les deux variantes des revendications 6 et 7.

  • La figure 1 est une vue latérale d'un mécanisme de piano droit classique, la touche étant en position haute, c'est-à-dire au repos.
  • La figure 2 est une vue du même mécanisme, avec la touche en position basse, c'est-à-dire pressée, le marteau revenant en arrière après avoir frappé la corde.
  • La figure 3 est une vue latérale d'un dispositif selon l'invention, dans la variante de la revendication 6,la touche étant en position haute.
  • La figure 4 est une vue latérale d'un dispositif selon l'invention, dans la variante de la revendication 7, la touche étant pressée et le marteau lancé vers la corde ; les traits pointillés représentent la position de certaines pièces lorsque la touche est en position haute et dans une position intermédiaire.
The drawings show, by way of explanation and examples, on the one hand a classic upright piano mechanism, on the other hand a device and means of implementation according to the inventions, according to the two variants of claims 6 and 7.
  • Figure 1 is a side view of a conventional upright piano mechanism, the key being in the high position, that is to say at rest.
  • Figure 2 is a view of the same mechanism, with the key in the down position, that is to say pressed, the hammer returning back after striking the rope.
  • Figure 3 is a side view of a device according to the invention, in the variant of claim 6, the key being in the high position.
  • FIG. 4 is a side view of a device according to the invention, in the variant of claim 7, the key being pressed and the hammer launched towards the string; the dotted lines represent the position of certain parts when the key is in the high position and in an intermediate position.

Dans les mécanismes classiques, le mouvement descendant de la touche 1 fait monter le poussoir d'échappement 2, ce qui lance simultanément le marteau 3 en direction de la corde 4. A mi-course de la touche, l'étouffoir 5 libère la corde sous la poussée de la cuillère 6. Emporté par son élan, le marteau frappe la corde . Immédiatement avant que le marteau frappe la corde, l'échappement fonctionne : le levier d'échappement 7 bute sur le bouton d'échappement 8, de façon que le poussoir d'échappement 2 recule et que son bout 13 glisse sur la noix, laissant ainsi le marteau poursuivre librement sa course. A partir du déclenchement de l'échappement, la touche 1, qui est représentée seulement partiellement ici, poursuit également sa course indépendamment de celle du marteau. Celui-ci va frapper la corde et il est renvoyé en arrière. La touche étant encore en position pressée, la contre-attrape 10 solidaire du manche du marteau vient s'appuyer sur l'attrape 9, qui est encore en position haute.In conventional mechanisms, the downward movement of the button 1 raises the exhaust pusher 2, which simultaneously launches the hammer 3 in the direction of the rope 4. Halfway through the button, the damper 5 releases the rope under the pressure of the spoon 6. Carried away by its momentum, the hammer strikes the rope. Immediately before the hammer hits the rope, the exhaust works: the exhaust lever 7 abuts on the exhaust button 8, so that the exhaust pusher 2 moves back and its tip 13 slides on the nut, leaving thus the hammer freely continue its course. From the triggering of the exhaust, key 1, which is only partially shown here, also continues its course independently of that of the hammer. This one will strike the rope and it is sent back. The key being still in the pressed position, the counter-catch 10 secured to the hammer handle comes to rest on the catch 9, which is still in the high position.

Si la touche remonte plus vite que le marteau ne redescend, le poussoir d'échappement se remet en place sous la noix 11 et le mécanisme est ainsi rechargé, l'étouffoir 5 étant par ailleurs revenu sur la corde. En fin de course, le marteau retombe sur la bande de repos 12.If the key rises faster than the hammer descends, the exhaust pusher is replaced by the nut 11 and the mechanism is thus recharged, the damper 5 also being returned to the rope. At the end of the stroke, the hammer falls on the rest strip 12.

Si par contre la touche remonte plus lentement que le marteau ne redescend, le poussoir d'échappement n'a pas le temps de revenir en place sous la noix. Le seul moyen pour que le dispositif soit à nouveau chargé consiste pour le pianiste à relever le doigt assez haut de façon que la touche remonte suffisamment. C'est là que réside l'inconvénient majeur des pianos droits, déjà mentionné plus haut : il n'est pas possible de se contenter d'un mouvement de faible amplitude pour recharger le dispositif. L'amplitude nécessaire est trop grande pour exécuter aisément des trilles, surtout pianissimo.If, on the other hand, the button rises more slowly than the hammer descends, the exhaust pusher does not have time to return to its place under the nut. The only way for the device to be charged again is for the pianist to raise the finger high enough so that the key goes up enough. Therein lies the major drawback of upright pianos, already mentioned above: it is not possible to be satisfied with a movement of small amplitude to recharge the device. The amplitude required is too great to easily perform trills, especially pianissimo.

Le dispositif objet de l'invention comprend un deuxième poussoir d'échappement 14. Ce poussoir est fixé, directement ou par l'intermédiaire d'autres pièces, à l'attrape. Le poussoir s'étend en direction du manche du marteau et son bout 15 se trouve à une distance du manche du marteau qui est calculée de façon que le manche vienne s'appuyer contre ce bout à peu près au moment où la contre-attrape 10 vient s'appuyer sur l'attrape 9. Dès lors, même en ne relevant que légèrement la touche, et alors même que l'amplitude de ce mouvement est insuffisante pour remettre en place le poussoir d'échappement 2 sous la noix, le deuxième poussoir d'échappement 14 peut agir sur le manche du marteau sous l'effet d'une nouvelle pression sur la touche.The device which is the subject of the invention comprises a second exhaust pusher 14. This pusher is fixed, directly or by means of other parts, to the catcher. The pusher extends in the direction of the hammer handle and its tip 15 is at a distance from the hammer handle which is calculated from so that the handle comes to rest against this end at about the moment when the counter-catcher 10 comes to press on the catcher 9. Therefore, even while only slightly raising the key, and even then the amplitude of this movement is insufficient to replace the exhaust pusher 2 under the nut, the second exhaust pusher 14 can act on the hammer handle under the effect of a new pressure on the key.

Le deuxième poussoir d'échappement peut être fixé rigidement à l'attrape, auquel cas il joue principalement un rôle de butée. Pour en faire un poussoir d'échappement véritable, il convient de lui permettre de basculer afin que son extrémité quitte le contact du manche du marteau en fin de course, de la même manière que le premier poussoir quitte en fin de course son point d'appui sous la noix pour laisser le marteau finir sa course par son seul élan. A cette fin, dans la forme d'exécution préférée représentée dans les dessins, le deuxième poussoir est monté sur un axe 16 qui est lui-même fixé sur l'attrape. Dans la forme d'exécution représentée ici, l'axe 16 est une partie d'une tige 17 qui permet la fixation à l'attrape par le biais d'une pièce de serrage 18. Une autre partie de la même tige, parallèle à l'axe 16, forme un arrêt 19 contre lequel vient buter le corps du deuxième poussoir. Sous le corps du deuxième poussoir, un coussin d'arrêt 20 amortit le contact avec l'arrêt 19. La hauteur de cet arrêt est réglable par simple torsion de la tige 17. La hauteur de l'arrêt détermine la hauteur à laquelle s'arrête le bout 15 qui rencontre le manche du marteau. De préférence, l'angle formé par la droite reliant l'axe 16 et le bout 15, d'une part, et l'axe du manche du marteau, d'autre part, est à peu près droit. A l'arrière, c'est-à-dire du côté opposé au manche du marteau, le deuxième poussoir présente un bout 21. Ce bout 21, comme le bout 15, est muni d'une roulette de feutre qui adoucit le contact. Lorsque l'attrape avance en direction du manche du marteau, elle s'élève en même temps en entraînant avec elle le deuxième poussoir, qui se rapproche ainsi de la barre céleste. Une butée de déclenchement 22 est fixée sur une partie non mobile du piano, sur le trajet que doit parcourir le bout 21. La butée est placée à une hauteur réglable. Cette hauteur est calculée de façon que le bout 21 du deuxième poussoir vienne s'appliquer en fin de course contre cette butée et glisse contre elle. Comme le bout 21 reste à la hauteur déterminée par la butée, alors que l'axe 16 continue à s'élever avec l'attrape, le deuxième poussoir bascule autour de l'axe 16 et le bout 15 s'élève, quittant le manche du marteau. Ainsi, de la même manière que le premier poussoir d'échappement quitte son point d'appui sous la noix en laissant le marteau finir sa course par son seul élan, le deuxième poussoir quitte le contact avec le manche du marteau en fin de course. Il suffit de relâcher légèrement la touche pour que le deuxième poussoir redescende, sous l'action d'un ressort 24, et soit à nouveau prêt à repousser le manche du marteau, avant même que le premier poussoir soit revenu sous la noix. Il suffit que le deuxième poussoir recule de la faible distance X pour que le bout 15 redescende en parcourant la distance Y.The second exhaust pusher can be rigidly attached to the catcher, in which case it mainly acts as a stop. To make it a true exhaust valve, it should be allowed to tilt so that its end leaves the contact of the handle of the hammer at the end of the stroke, in the same way as the first pusher leaves at the end of its stroke its support under the nut to let the hammer finish its course with its only momentum. To this end, in the preferred embodiment shown in the drawings, the second pusher is mounted on a pin 16 which is itself fixed on the catcher. In the embodiment shown here, the axis 16 is a part of a rod 17 which allows attachment to the catcher by means of a clamping piece 18. Another part of the same rod, parallel to axis 16, forms a stop 19 against which the body of the second pusher abuts. Under the body of the second pusher, a stop cushion 20 dampens the contact with the stop 19. The height of this stop is adjustable by simply twisting the rod 17. The height of the stop determines the height at which s stop the tip 15 which meets the handle of the hammer. Preferably, the angle formed by the straight line connecting the axis 16 and the tip 15, on the one hand, and the axis of the hammer handle, on the other hand, is approximately straight. At the rear, that is to say on the side opposite the hammer handle, the second pusher has a tip 21. This tip 21, like the tip 15, is provided with a felt roller which softens the contact. When the catcher advances towards the hammer handle, it rises at the same time, carrying with it the second plunger, which thus approaches the celestial bar. A trigger stop 22 is fixed on a non-movable part of the piano, on the path that the tip 21 must travel. The stop is placed at an adjustable height. This height is calculated so that the end 21 of the second pusher comes to apply at the end of the race against this stop and slides against it. As the end 21 remains at the height determined by the stop, while the axis 16 continues to rise with the catcher, the second pusher switches around the axis 16 and the tip 15 rises, leaving the handle of the hammer. Thus, in the same way that the first exhaust pusher leaves its fulcrum under the nut, letting the hammer end its race by its sole impetus, the second pusher leaves contact with the handle of the hammer at the end of the race. It is enough to slightly release the key so that the second pusher descends, under the action of a spring 24, and is again ready to push back the handle of the hammer, even before the first pusher has returned under the nut. It suffices that the second pusher moves back by the small distance X for the tip 15 to descend again by traversing the distance Y.

La longueur du deuxième poussoir est réglable : pour le raccourcir, il suffit d'enfoncer la tige, de préférence métallique, qui forme le bras qui s'étend en direction du manche du marteau, dans le corps du poussoir, lequel est de préférence en bois; une traction provoque au contraire un allongement. Il est d'ailleurs possible de fixer sur le manche du marteau une ou plusieurs pièces à la hauteur où le bout 15 du poussoir rencontre le manche. C'est également là une manière de raccourcir la distance qui sépare le bout 15 du manche du marteau.The length of the second plunger is adjustable: to shorten it, it suffices to push the rod, preferably metallic, which forms the arm which extends in the direction of the hammer handle, into the body of the plunger, which is preferably in wood; traction, on the contrary, causes elongation. It is also possible to fix on the handle of the hammer one or more pieces at the height where the tip 15 of the pusher meets the handle. This is also a way of shortening the distance between the tip 15 of the hammer handle.

Dans une première variante, représentée à la figure 3, et qui est destinée surtout à des pianos déjà existants, sur lesquels il s'agit d'installer le dispositif, la butée 22 est une tige coudée qui est fixée à la barre céleste. Cette tige est dans le même plan vertical que le trajet du deuxième poussoir. Sa partie inférieure, qui entre en contact avec le bout 21 lorsque celui-ci est en fin de course, est approximativement horizontale.In a first variant, represented in FIG. 3, and which is intended especially for already existing pianos, on which it is a question of installing the device, the stop 22 is a bent rod which is fixed to the celestial bar. This rod is in the same vertical plane as the path of the second pusher. Its lower part, which comes into contact with the tip 21 when the latter is at the end of its travel, is approximately horizontal.

La tige coudée est de préférence enfoncée dans une barre 23 en bois. Cette barre s'étend de préférence sur toute la longueur du piano et porte l'ensemble des tiges coudées de déclenchement. La fixation de la barre 23 à la barre céleste se fait simplement au moyen d'une bande adhésive. Le réglage de la hauteur de la tige coudée de déclenchement 22 se fait en la tirant ou en la poussant vers le bas ou vers le haut, c'est-à-dire en l'enfonçant plus au moins profondément dans la barre 23.The bent rod is preferably inserted into a wooden bar 23. This bar preferably extends over the entire length of the piano and carries all of the angled trigger rods. The fixing of the bar 23 to the celestial bar is done simply by means of an adhesive strip. The height of the angled trigger rod 22 is adjusted by pulling or pushing it down or up, that is to say by pushing it more or less deeply into the bar 23.

Dans une deuxième variante, représentée à la figure 4, et qui est destinée surtout à des pianos fabriquée d'emblée pour être équipés du dispositif, la butée 22 est un bouton, analogue au bouton d'échappement. Ce bouton est fixé par une vis dans une barre 23. La barre 23 n'est plus fixée ici à la barre céleste; elle l'est à la barre de centre, par exemple par l'intermédiaire de traverses qui ne sont pas représentées dans le dessin. Une telle construction permet d'enlever la barre céleste sans enlever la barre 23, et de procéder ainsi aisément au réglage de la hauteur des boutons au moyen des vis. De la sorte, le rôle de la barre céleste est réduit : d'une part elle ne sert pas à la fixation de la butée de déclenchement, et, d'autre part, elle n'est plus indispensable pour servir de point d'appui au marteau lors d'un décrochement du dispositif principal d'échappement, puisque le deuxième poussoir d'échappement 14 suffit à remplir ce rôle. La barre céleste n'est donc plus qu'un point d'appui secondaire et sert principalement de support pour la pédale douce et de barre de renforcement et stabilisation de l'ensemble du piano. Il peut être avantageux de l'amincir, de la placer plus haut (afin de rendre plus aisé l'accès aux têtes des vis de réglage des butées) et de la fixer au moyen d'un dispositif qui la rende aisément amovible, en vue de faciliter le réglage.In a second variant, shown in Figure 4, and which is intended primarily for pianos manufactured from the outset to be equipped with the device, the stop 22 is a button, similar to the exhaust button. This button is fixed by a screw in a bar 23. The bar 23 is no longer attached here to the celestial bar; it is at the center bar, for example via crosspieces which are not shown in the drawing. Such a construction makes it possible to remove the celestial bar without removing the bar 23, and thus to easily adjust the height of the buttons by means of the screws. In this way, the role of the celestial bar is reduced: on the one hand it is not used for fixing the trigger stop, and, on the other hand, it is no longer essential to serve as a fulcrum with a hammer when the main exhaust device is lifted, since the second exhaust pusher 14 is sufficient to fulfill this role. The celestial bar is therefore only a secondary support point and serves mainly as a support for the soft pedal and as a reinforcement and stabilization bar for the entire piano. It may be advantageous to make it thinner, to place it higher (in order to make it easier to access the heads of the stopper adjustment screws) and to fix it by means of a device which makes it easily removable, in view to facilitate adjustment.

Il est à noter qu'il est également possible d'utiliser des butées en forme de barres coudées avec une barre 23 qui n'est pas fixée à la barre céleste.It should be noted that it is also possible to use stops in the form of bent bars with a bar 23 which is not fixed to the celestial bar.

Dans une forme d'exécution simplifiée, la butée de déclenchement 22 est supprimée, et le deuxième poussoir 14 est simplement une butée basculant librement sur l'axe 16. Une telle butée mobile permet déjà d'atteindre le résultat visé, mais de manière moins satisfaisante.In a simplified embodiment, the trigger stop 22 is omitted, and the second pusher 14 is simply a stop rocking freely on the axis 16. Such a movable stop already achieves the desired result, but in a less satisfactory.

C'est le cas à plus forte raison dans une forme d'exécution encore simplifiée, dans laquelle le poussoir est fixé rigidement, sans axe.This is all the more the case in a still simplified embodiment, in which the pusher is rigidly fixed, without an axis.

Néanmoins, ces deux formes d'exécution améliorent le fonctionnement du piano.However, these two forms of performance improve the functioning of the piano.

Grâce au deuxième poussoir d'échappement, les répétitions lentes ou rapides sont garanties dans n'importe quelle position de la touche, quelle que soit la force de frappe. L'échappement simple de la mécanique traditionnelle ne les permet pas. En règle générale, le jeu pianistique devient plus expressif. Les notes répétées en pianissimo peuvent être jouées legato sans que le son soit entrecoupé. Cela est impossible à garantir avec l'échappement simple de la mécanique traditionnelle.Thanks to the second exhaust pusher, slow or fast repetitions are guaranteed in any position of the key, regardless of the striking force. The simple exhaust of traditional mechanics does not allow them. As a rule, the piano playing becomes more expressive. Notes repeated in pianissimo can be played legato without the sound being interrupted. This is impossible to guarantee with the simple exhaust of traditional mechanics.

Claims (12)

1. Dispositif d'échappement pour piano droit, caractérisé en ce qu'il comprend au moins un deuxième poussoir d'échappement (14) fixé sur l'attrape (9) ou sur une pièce solidaire de l'attrape, ledit deuxième poussoir s'étendant en direction du manche du marteau, la distance entre le bout (15) dudit poussoir et ledit manche, ou une pièce solidaire dudit manche, étant telle que ledit manche vient s'appuyer contre ledit bout approximativement au moment ou la contre-attrape (10) vient s'appuyer sur l'attrape.1. Exhaust device for upright piano, characterized in that it comprises at least one second exhaust pusher (14) fixed on the catcher (9) or on a part integral with the catcher, said second pusher s 'extending in the direction of the hammer handle, the distance between the end (15) of said plunger and said handle, or an integral part of said handle, being such that said handle comes to bear against said end approximately at the time when the catch catches (10) comes to rest on the catch. 2. Dispositif selon la revendication 1, caractérisé en ce que le deuxième poussoir d'échappement (14) est fixé sur l'attrape (9) ou une pièce solidaire de l'attrape au moyen d'un axe (16) qui permet audit poussoir de basculer de façon que le bout (15) dudit poussoir s'élève, l'angle formé par le manche du marteau, la droite passant par l'axe (16) et le point de contact dudit bout avec ledit manche étant approximativement droit.2. Device according to claim 1, characterized in that the second exhaust pusher (14) is fixed to the catcher (9) or a part integral with the catcher by means of an axis (16) which allows said pusher to tilt so that the end (15) of said pusher rises, the angle formed by the hammer handle, the straight line passing through the axis (16) and the point of contact of said end with said handle being approximately straight . 3. Dispositif selon la revendication 2, caractérisé en ce qu'il comprend des moyens aptes à élever le bout (15) du deuxième poussoir en fonction du mouvement de l'attrape.3. Device according to claim 2, characterized in that it comprises means capable of raising the end (15) of the second pusher as a function of the movement of the catcher. 4. Dispositif selon la revendication 3, caractérisé en ce que les moyens aptes à élever le bout (15) du deuxième poussoir sont une butée de déclenchement (22) fixée de manière amovible et réglable sur une partie non mobile du piano, et l'autre bout (21) du deuxième poussoir, ledit autre bout et ledit bras de déclenchement étant conformés de façon que ledit autre bout vienne s'appuyer sur ledit bras de déclenchement en faisant basculer le deuxième poussoir au moins pendant la phase finale de l'ascension de l'attrape.4. Device according to claim 3, characterized in that the means capable of raising the end (15) of the second pusher are a trigger stop (22) removably fixed and adjustable on a non-movable part of the piano, and the other end (21) of the second pusher, said other end and said trigger arm being shaped so that said other end comes to rest on said trigger arm by tilting the second pusher at least during the final phase of the ascent to catch it. 5. Dispositif selon la revendication 1, caractérisé en ce que le deuxième poussoir est fixé à l'attrape ou à une pièce solidaire de l'attrape de manière amovible.5. Device according to claim 1, characterized in that the second pusher is fixed to the catch or to a part integral with the catch in a removable manner. 6. Dispositif selon la revendication 4, caractérisé en ce que la butée de déclenchement (22) est une barrette coudée.6. Device according to claim 4, characterized in that the triggering stop (22) is a bent bar. 7. Dispositif selon la revendication 4, caractérisé en ce que la butée de déclenchement (22) est un bouton fixé de manière amovible et réglable au moyen d'une vis.7. Device according to claim 4, characterized in that the trigger stop (22) is a button detachably fixed and adjustable by means of a screw. 8. Dispositif selon les revendications 5 et 6.8. Device according to claims 5 and 6. 9. Dispositif selon les revendications 5 et 7.9. Device according to claims 5 and 7. 10. Barre (23) apte à être utilisée dans un dispositif selon la revendication 6, présentant au moins une butée (22) de déclenchement en forme de barrette coudée, au moins l'une des faces de ladite barre étant couverte au moins partiellement d'adhésif permettant de coller ladite barre de manière amovible à une partie fixe.10. Bar (23) capable of being used in a device according to claim 6, having at least one stop (22) for triggering in the form of a bent bar, at least one of the faces of said bar being covered at least partially by adhesive for removably sticking said bar to a fixed part. 11. Poussoir apte à être utilisé dans un dispositif selon les revendications 1 à 9, caractérisé en ce que ses deux bouts (15, 21)) sont pourvus de roulettes de feutre.11. Pusher able to be used in a device according to claims 1 to 9, characterized in that its two ends (15, 21)) are provided with felt rollers. 12. Dispositif selon la revendication 8 , comprenant au moins un poussoir selon la revendication 11 et une barre selon la revendication 10.12. Device according to claim 8, comprising at least one pusher according to claim 11 and a bar according to claim 10.
EP87810035A 1986-01-17 1987-01-19 Return mechanism for an upright piano and means for its application Expired - Lifetime EP0229746B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87810035T ATE89093T1 (en) 1986-01-17 1987-01-19 PULL-BACK DEVICE FOR A SMALL PIANO AND MEANS FOR ITS APPLICATION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH175/86 1986-01-17
CH17586 1986-01-17

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EP0229746A2 true EP0229746A2 (en) 1987-07-22
EP0229746A3 EP0229746A3 (en) 1989-03-08
EP0229746B1 EP0229746B1 (en) 1993-05-05

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EP87810035A Expired - Lifetime EP0229746B1 (en) 1986-01-17 1987-01-19 Return mechanism for an upright piano and means for its application

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EP (1) EP0229746B1 (en)
AT (1) ATE89093T1 (en)
DE (2) DE3785680T2 (en)
ES (1) ES2014214A4 (en)
GR (1) GR900300103T1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003477A1 (en) * 1991-08-01 1993-02-18 Vladislav Vladimirovich Volkov Piano key mechanism
EP0585798A2 (en) * 1992-08-31 1994-03-09 Yamaha Corporation Upright piano with key action mechanism responsive to repetition without double strike and loss of sound
DE4414109A1 (en) * 1994-04-22 1995-10-26 Helmut Karl Repeat piano mechanism with key actuated lever
CN111531352A (en) * 2020-04-14 2020-08-14 陈忠 Rotary layering device for urheen barrel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE123696C (en) *
DE51541C (en) * H. L. HONE in Lexington, Kentucky Repetition mechanism for pianofortes
US1599743A (en) * 1923-10-01 1926-09-14 Carnes John Wilson Piano action

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE123696C (en) *
DE51541C (en) * H. L. HONE in Lexington, Kentucky Repetition mechanism for pianofortes
US1599743A (en) * 1923-10-01 1926-09-14 Carnes John Wilson Piano action

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003477A1 (en) * 1991-08-01 1993-02-18 Vladislav Vladimirovich Volkov Piano key mechanism
EP0585798A2 (en) * 1992-08-31 1994-03-09 Yamaha Corporation Upright piano with key action mechanism responsive to repetition without double strike and loss of sound
EP0585798A3 (en) * 1992-08-31 1995-03-15 Yamaha Corp Upright piano with key action mechanism responsive to repetition without double strike and loss of sound.
DE4414109A1 (en) * 1994-04-22 1995-10-26 Helmut Karl Repeat piano mechanism with key actuated lever
CN111531352A (en) * 2020-04-14 2020-08-14 陈忠 Rotary layering device for urheen barrel

Also Published As

Publication number Publication date
ES2014214A4 (en) 1990-07-01
EP0229746B1 (en) 1993-05-05
ATE89093T1 (en) 1993-05-15
DE3785680D1 (en) 1993-06-09
GR900300103T1 (en) 1991-09-27
DE3785680T2 (en) 1993-11-11
EP0229746A3 (en) 1989-03-08
DE229746T1 (en) 1990-09-06

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