CH311865A

CH311865A - Timepiece with deadbeat seconds.

Info

Publication number: CH311865A
Authority: CH
Inventors: S A Montres Rolex
Original assignee: Rolex Montres
Priority date: 1953-08-12
Filing date: 1953-08-12
Publication date: 1955-12-15

Description

Piece d'horlogerie ä avertisseur Le brevet pnincipal a pour objet une piece d'horlo- gerie ä avertisseur dans laquelle deux roues, la Premiere montee ä frottement Sur un mobile du rouage, et la deuxieme de comptage du temps, sont normalement 6car- t6es l'une de 1'autre et dass laquelle un dispositif per- met, en mettant en Prise ces deux roues, de faire tourner la seconde d'un angle correspondant ä un intervalle de temps predetermine jusqu'ä ce qu'elle revienne au zero, un dispositif actionnant alors 1'avertisseur, caracterise par 1e fait que ledit dispositif d'embrayage des deux roues se compose dune bascule articulee au centre du mou- vement, supportant une tige et un bouton de commande ainsi qu'un rouage de mise ä 1'heure de la reue de comp- tage, un plan incline, une paroi concentmque ä laxe du centre et une denture placee ä cette Peripherie, et par 1e fait que pour une certaine Position angulaire, ladite bascule deplace, par 1'intermeidaire du plan inctine, la reue de comptage montee sirr un bras oscillant, et la met en Prise avec la reue d'entrainement ajustäe ä frotte- ment surr I'arbre de centre et met egalement en Prise le rouage de mise ä 1'heure avec cette reue de comptage. Timepiece with warning device The main patent relates to a timepiece with warning device in which two wheels, the first mounted by friction on a moving part of the gear train, and the second for counting the time, are normally spaced apart. from one another and in which a device makes it possible, by bringing these two wheels into engagement, to rotate the second through an angle corresponding to a predetermined time interval until it returns to zero , a device then activating the horn, characterized by the fact that said two-wheel clutch device consists of a rocker articulated at the center of the movement, supporting a rod and a control button as well as a gear train. at the time of the counting reception, an inclined plane, a wall concentric with the axis of the center and a toothing placed at this Periphery, and by the fact that for a certain angular position, the said rocker moves, through the intermediary of the plane, the counting gear mounted on an oscillating arm, and engages it with the friction-adjusted drive gear on the center shaft and also engages the time-setting gear train with this counting receipt.

11 est bien connu en horlogerie de monter un mobile Sur un Support pivotant de maniere ä ,pouvoir 1e faire en- grener ou non avec un autre mobile. It is well known in watchmaking to mount a mobile on a pivoting support so as to be able to make it mesh or not with another mobile.

0n a, par exemple, dejä propose, dans un commu- tateur ä mouvement d'horlogerie comportant un pignon entraine par 1e mouvement et susceptible d'engrener avec une reue de comptage de laquelle il est normalement ecarte, de monter la reue de comptage Sur un Support pivotant. Sur faxe de la reue de comptage est monte un dispositif permettant de faire tourner la reue de comptage d'un angle correspondant ä un intervalle de temps predetermine. Le d6p1acement du support pivo- tant est assure par u,ne came coaxiale ä un disque horaire et agissant ,Sur un prolongement dudit Support. Un tel m6canisme prend toutefois beaucoup trop de place et West pas utilisable Jans une piece d'horlogerie de di- mensdons reduites. Il fait en outre intervenir des tiges fixees par une seule extremite dans ,les mobiles en pre- sence, notamment pour 1'accouplement des mobiles mon- t6s Sur le Support pivotant, rendant 1e tout complique et d6lncat. It has, for example, already been proposed, in a clockwork commutator comprising a pinion driven by the movement and capable of meshing with a counting gear from which it is normally spaced apart, to mount the counting gear on a pivoting support. On the fax of the counting receipt is mounted a device making it possible to rotate the counting receipt by an angle corresponding to a predetermined time interval. The displacement of the pivoting support is ensured by a cam coaxial with a time disc and acting on an extension of the said support. However, such a mechanism takes up far too much space and cannot be used in a timepiece of reduced dimensions. It also involves rods fixed by a single end in the mobiles present, in particular for the coupling of the mobiles mounted on the pivoting support, making the whole thing complicated and delicate.

La presente invention eise au contraire ä realiser un ensemble compact groupant dans un espace reduit la reue de comptage et ]es dispositifs d'embrayage de cette reue, ce groupement etant en outre rea1ise de teile ma- niere que 1e nombre d'elements utilises est reduit par rapport aux solutions anterieures. The present invention, on the contrary, aims to produce a compact assembly grouping together in a reduced space the counting receipt and the clutch devices of this receipt, this grouping furthermore being produced in such a way that the number of elements used is reduced compared to previous solutions.

L'invention a pour objet une piece d'horlogerie ä avertisseur, selon la revendication du brevet principal, caracterisee par 1e fait que ladite reue de comptage est pivotee autoirr d'un axe fixe entre les bras d'un Support mobile, luä-meme pilote par une extremite autoirr d'un axe solidaire de la Platine, et comportant lesdits disposi- tifs d'embrayage et d'avertissement. The subject of the invention is a timepiece with an alarm, according to the claim of the main patent, characterized by the fact that said counting receiver is pivoted around a fixed axis between the arms of a mobile support, itself pilot by one end autoirr of a shaft fixed to the plate, and comprising the said clutch and warning devices.

Les dessins annexes representent, ä titre d'exemple, une forme d'execution et des variantes de la präsente invention. The appended drawings represent, by way of example, an embodiment and variants of the present invention.

La fig. 1 en est une vue en plan. fig. 1 is a plan view.

La fig. 2 est une vue en elevation selon 11-1I, et la fig. 3, une vue de face selon 111-111 de la fig. 1. La fig. 4a montre une prem.iere vue de cöte, et la fig. 4b, une seconde vue de cöte dune variante. La fig. 5a montre une vue en plan dune autre va- riante, et la fig. 5b en est une vue developpee en elevation. Au dessin, 1 designe la Premiere reue montee ä frot- tement Sur laxe 2 des minutes, sous la reue de centre d'un mouvement non represente. La reue 1 engrene avec une seconde reue 3 (fig. 3), constituant une reue de comptage du temps, et pivotee autoirr d'un axe 4, fixe entre les bras d'un Support mobile 5. Ce dernier est pivote par son extremite 6 autoirr d'un axe 7 solidaire de la Platine B. Coaxialement, Sur faxe 4 du support mobile 5, sont en outre montes une came 9 et un renvoi 10. Ce renvoi engrene avec une raue ä canon 11 coaxiale ä la Premiere roue 1 sur laxe des minutes 2. Le canon Porte un Index 12 ddindication du temps ecould. Sous la roue 3 est enco-re montee une roue d'a gle 13 entrainee par un pignon 14 commande par une tige de comptage 15. La roue d'angle 13, la roue de comptage 3, la came 9 et 1e renvoi 10 sont solidaires en rotation autour de faxe 4. fig. 2 is an elevational view along 11-1I, and FIG. 3, a front view according to 111-111 of FIG. 1. Fig. 4a shows a first side view, and FIG. 4b, a second side view of a variant. fig. 5a shows a plan view of another variant, and fig. 5b is a developed view in elevation. In the drawing, 1 designates the First receipt mounted by friction On axis 2 of the minutes, under the center receipt of a movement not shown. Reue 1 meshes with a second reue 3 (fig. 3), constituting a time counting reue, and pivoted around an axis 4, fixed between the arms of a mobile support 5. The latter is pivoted by its end 6 around an axis 7 secured to the plate B. Coaxially, on the fax 4 of the mobile support 5, are also mounted a cam 9 and a reference 10. This reference meshes with a cannon wheel 11 coaxial with the first wheel 1 on the minute axis 2. The barrel bears an Index 12 indicating the elapsed time. Under the wheel 3 is still re-mounted an angle wheel 13 driven by a pinion 14 controlled by a counting rod 15. The angle wheel 13, the counting wheel 3, the cam 9 and the first reference 10 are integral in rotation around fax 4.

L'extremite 16 du Support mobile 5 est soumise 'a 1'action d'un ressort helicoidal 17 fixe ä la Platine B. La came 9 presente Sur sa Peripherie circulaire une encoche 18 et une butee contigue 19. The end 16 of the mobile support 5 is subjected to the action of a helicoidal spring 17 fixed to the plate B. The cam 9 has on its circular periphery a notch 18 and a contiguous stop 19.

Sous 1'effet du ressort 17 agissant Sur 1e Support 5 pivote autour de I'arbre 7, la came 9 est appuyee contre un galet 20, monte entre deux ponts 21 et 22 Sur la Pla- tine B. Lorsque la Peripherie eirculaire de la came 9 s'appuie contre 1e galet (fig. 1), sous 1'action du ressort 17, la Premiere roue 1 engrene avec la roue de comptage 3 et 1'entraine en rotation dans 1e sens de la minuterie. Le mecanisme de comptage fonctionne alors jusqu'ä ce que l'encoche 18 parvienne en eorrespöndance avec 1e galet 20. A ce moment, 1e support 5 pivote autour de faxe 7 jusqu'ä ce que le galet sofft entr6 dans 1'encoche 18 et 1'avertisseur entre en action, comme il Sera decrit plus loin. Les roues 1 et 3 sont alors ecartees l'une de 1'autre. Under the effect of the spring 17 acting on the support 5 pivots around the shaft 7, the cam 9 is pressed against a roller 20, mounted between two bridges 21 and 22 on the plate B. When the circular periphery of the cam 9 bears against the first roller (fig. 1), under the action of the spring 17, the first wheel 1 meshes with the counting wheel 3 and causes it to rotate in the first direction of the timer. The counting mechanism then operates until the notch 18 comes into contact with the roller 20. the alarm comes into action, as will be described later. The wheels 1 and 3 are then separated from one another.

Dans tonte Position de la came 9, la tige de comp- tage permet de modifier la Position angulaire de la came. L'index donne, en correspondance, t'indication du temps de cömptage sur un-cadran. Dans 1'exemple d'exe- cution decrit, ce cadran est concentrique au cadran de la montre ou du reveil, mais il est bien entendu que la roue ä canon 11 pourrait etre pivotee Sur un axe diffe rent de laxe des minutes 2, ä condition que la roue ä canon reste en Prise avec 1e renvoi 10. In any Cam position 9, the counter rod allows the angular position of the cam to be modified. The index gives, in correspondence, the indication of the counting time on a dial. In the exemplary embodiment described, this dial is concentric with the dial of the watch or the clock, but it is understood that the barrel wheel 11 could be pivoted on an axis different from the minute axis 2, provided the cannon wheel remains in engagement with the idler 10.

0n a prevu pour ces deux mobiles un gros module, de teile maniere qu'its restent engrenes, quelle que sofft la Position du Support 5. La butee 19 empeche d'ac- tionner la tige de comptage 15 dans 1e mauvais sens, lorsque 1'encoche de la came est en eorrespondance avec 1e galet. Dans tonte autre Position du galet, lorsque la tige est actionnee dans un sens quelconque, la roue d'en- trainement 1 tourne ä frottement Sur laxe 2. A large module has been provided for these two mobiles, in such a way that they remain meshed, whatever the Position of the Support 5 is. the notch of the cam is in ecorrespondence with the 1st roller. In any other position of the roller, when the rod is actuated in any direction, the drive wheel 1 rotates frictionally on the axis 2.

Lorsque 1e mecanisme de comptage fonctionne, c'est- ä-dire que la came 9 a dte ddplacee et positionnee angu- lairement dune valeur quelconque, une Partie de 1'ener- gie du mouvement sert ä 1'entrainement du mecanisme. 0n a prevu de supprimer RTI ID="0002.0277" WI="3" HE="4" LX="509" LY="2031"> 1e ddreglage qui peut en resul- ter pour 1e mouvement par un apport d'energie exte- rieure. A cet et?fet, un ressort helicoidal 23 est monte autour de la tige de comptage 15. L'une des extremites de ce ressort est fixee ä la Platine 8, tandls que son autre extremite est solidaire du pignon 14..Ainsi, I'ac- tionnement de la tige 15 tend ce ressort, qui emmagasine de lenergie en Proportion de la valeur angulaire du deplacement de la came 9. Pendant le fonetionnement du mecanisme de comptage, c'est-ä-dire la rotation des mo biles 13, 3, 10 et11, ainsi que de la came 9 contre 1e galet 20, 1e ressort 23 restitue cette energie de teile ma-. niere que 1e mouvernent n'ait plus ä vaincre les frotte- ments resultant des transmissions de force. When the counter mechanism is operating, ie the cam 9 has been displaced and angularly positioned by any amount, part of the energy of the movement serves to drive the mechanism. It has been planned to eliminate RTI ID="0002.0277" WI="3" HE="4" LX="509" LY="2031"> the 1st misalignment which may result from this for the movement by an external energy supply - laugh. For this purpose, a helical spring 23 is mounted around the counting rod 15. One of the ends of this spring is fixed to the plate 8, while its other end is fixed to the pinion 14. Thus, I actuation of the rod 15 tends this spring, which stores energy in proportion to the angular value of the displacement of the cam 9. , 3, 10 and 11, as well as the cam 9 against the first roller 20, the first spring 23 restores this energy of such ma-. deny that the movement no longer has to overcome the friction resulting from the transmissions of force.

Bien entendu, 1e ressort helicoidai 23 pourrait, par exemple, etre remplace par un ressort spinal, tel que decrit plus loin pour la variante,des fig: 4a et 4b. Dans la forme d'execution des fig. 1 ä 3, (e ressort spinal de compensation pourrait etre dispose autour de laxe 4, par exemple entre 1e renvoi 10 et la came 9, son extre- mite exterieure etant fixee au pilier 5a du support 5 et son extremite Interieure ä laxe 4 lui-meme. A I'extre- mite 16 du Support mobile 5 est monte pivotant un cli- quet 24 cooperant avec un rocket 25 solidaire en rota- lion dune roue de contact 26, chassee Sur laxe 27 (fig. 2). Le ressort 17 est fixe ä un doigt 28 du cliquet 24, decentre par rapport -ä laxe du cliquet, de teile sorte que celui-ci est constamment appuye contre 1e rocket 25, 1e ressort 17 agissant simultanement, Sur 1e Support 5, comme ddjä indique plus haut. Of course, the first helicoidai spring 23 could, for example, be replaced by a spinal spring, as described below for the variant of Figs: 4a and 4b. In the embodiment of FIGS. 1 to 3, (the spinal compensating spring could be arranged around the axis 4, for example between the first transmission 10 and the cam 9, its outer end being fixed to the pillar 5a of the support 5 and its inner end to the axle 4 itself. At the end 16 of the movable support 5 is pivotally mounted a pawl 24 cooperating with a rocket 25 integral in rotation with a contact wheel 26, driven on the axle 27 ( 2) The spring 17 is fixed to a finger 28 of the pawl 24, offset with respect to the axis of the pawl, such that the latter is constantly pressed against the rocket 25, the spring 17 acting simultaneously, on the Support 5, as ddjä indicates above.

Sur la Platine 8 est montd un Support fixe 29 por- tant un organe isolant 30 dann lequel sont noyees deux tiges de contact 31 et 32 reliees ä des conducteurs cor- respondants 33 et 34 pour le declenchement dun aver- tisseur. A l'extremite de la tige inferieure 31 est fixee une poinde isolante 35 dirigee vers la roue 26 et en con- tact avec eile. Dans cette roue sont, par ailleurs, mena- gees des depressions ou trous 36, angulairement equi- distants sur une circonference. L'espace separant deux d-pressions 36 equivaut et co.rrespond ä 1'espace sepa- rant deux dents du rocket. Lorsque la Pointe 35 tombe Cans une depression 36, le contact est ouvert et 1'aver- tisseur au repos. Au contraire, lorsque la Pointe 35 se deplace Sur la surface de la roue 26 entre deux depres- sions 36, les ,Plots de contacts des tiges 31 et 32 sont reunis et le circuit electrique est ferme. Mounted on plate 8 is a fixed support 29 carrying an insulating member 30 in which are embedded two contact rods 31 and 32 connected to corresponding conductors 33 and 34 for triggering a horn. At the end of the lower rod 31 is fixed an insulating pole 35 directed towards the wheel 26 and in contact with it. In this wheel are, moreover, formed depressions or holes 36, angularly equidistant on a circumference. The space separating two depressions 36 is equivalent to and corresponds to the space separating two teeth of the rocket. When the tip 35 falls into a depression 36, the contact is open and the horn is at rest. On the contrary, when the tip 35 moves on the surface of the wheel 26 between two depressions 36, the contact pads of the rods 31 and 32 are united and the electrical circuit is closed.

A chaque deplacement du Support mobile 5, sous RTI ID="0002.0551" WI="11" HE="4" LX="1053" LY="1291"> 1'action de la rotation de la came entre la Position du galet.20 dans 1'encoche et sa positian Sur la Partie cir- culaire de la came, le cliquet 24 vient saisir une nou= velle dent du rocket 25. Lorsque 1e temps determine_ par la Position angulaire de la came s'acheve, 1'encoche vient correspondre avec 1e galet et 1e Support mobile 5 pivote sous 1'action du ressort 17. Le cliquet entraine alors 1e rocket et la roue 26 en rotation dune valeur an- gulaire correspondant ä I'avance dune dent du rocket. Pendant cet Intervalle de deplacement angulaire, la Pointe isolante 35 coulisse Sur la roue 26 entre deux depressions 36 et ferme 1e contact qui enclenche 1'aver- t isseu r. Each time the Mobile Support 5 is moved, under RTI ID="0002.0551" WI="11" HE="4" LX="1053" LY="1291"> the action of the rotation of the cam between the position of the roller 20 in the notch and its position On the circular part of the cam, the pawl 24 seizes a new tooth of the rocket 25. When the time determined by the angular position of the cam ends, the notch comes to correspond with the first roller and the first movable support 5 pivots under the action of the spring 17. The pawl then drives the first rocket and the wheel 26 in rotation by an angular value corresponding to the advance of a tooth of the rocket. During this interval of angular displacement, the insulating tip 35 slides on the wheel 26 between two depressions 36 and closes the first contact which engages the warning device.

Un dispositif de retardement est associe ä la roue de contact 26 pour limiter sa vitesse angulaire et d6li- miter ainsi la duree d'enclenchement de 1'avertisseur. Ce dispositif comprend une roue intermediaire 37 en Prise par un pignon 38 avec la roue de contact 26, une roue d'echappernent 39 en Prise par un pignon 40 avec la roue 37, ainsi qu'une ancre 41 montee Sur un axe por- tant un volant 42. Lorsque le Support mobile pivote par la commande de la came et entraine 1e cliquet 24, la rotation du rocket 25 solidaire de la roue de eontact 26 est freinee et regularisee. 11 y a bien entendu deux ma- nieres au moin.s de modifier la duree d'enclenchement de 1'avertisseur, Tune en variant 1e n'ombre de dents du rocket et, en relation avec 1'intervalle angulaire obtenu, les ouvertures de la roue de contaet, et 1'autre en modi- fiant les caracteristiques de 1'echappement du dispositif de retardement qui, dans certains cas, peut d'ailleurs etre supprime. A delay device is associated with the contact wheel 26 to limit its angular speed and thus limit the duration of the activation of the horn. This device comprises an intermediate wheel 37 engaged by a pinion 38 with the contact wheel 26, an escapement wheel 39 engaged by a pinion 40 with the wheel 37, as well as an anchor 41 mounted on an axis bearing a flywheel 42. When the mobile support pivots by the cam control and drives the first pawl 24, the rotation of the rocket 25 integral with the contact wheel 26 is braked and regularized. There are of course at least two ways of modifying the duration of the horn engagement, one by varying the number of teeth of the rocket and, in relation to the angular interval obtained, the openings of the the contact wheel, and the other by modifying the characteristics of the escapement of the delay device which, in certain cases, can moreover be eliminated.

En variante non representee, 1e contact de ferme- ture du dispositif el.ectrique d'avertissement pourrait etre d'un Gutre type. Une seine tige de contact isolee pourrait coulisser Sur la roue de contact, qui presente-, rafft alors des secteur.s isolants et des secteurs conduc- teurs relies ä la masse. 0u bien, la roue de contact pour- rait ctre munie de courtes tiges reparties circulairement ä sa peripherie et contre lesquelles viendraient buter, Tors du deplacement du Support mobile, deux tiges de contact isolees. In a variant not shown, the closing contact of the electrical warning device could be of a different type. A single insulated contact rod could slide on the contact wheel, which then has insulating sectors and conductive sectors connected to ground. Alternatively, the contact wheel could be provided with short rods distributed circularly at its periphery and against which two isolated contact rods would abut, when the mobile support moves.

Il est bien evident que la piece d'horlogerie decrite pourrait etre egalement munie d'un dispositif d'avertis- sement mecanique de types connus, ä la place de 1'aver- tisseur electrique dont il a ete question jusqu'ici. It is quite obvious that the timepiece described could also be fitted with a mechanical warning device of known types, instead of the electric warning device discussed so far.

En variante ä la fig. 4a, le Support mobile 43 porte un axe 44 monte en porte ä faux et Sur lequel toument, dune part, solidairement, la came 45 et la raue de comptage 46 et, d'autre part, la roue d'entrainement 47 solidaire d'un canon fendu 48 et susceptible, sous 1'ac- tion de la came, d'engrener avec 1.a denture du barillet 49. Un ressort spiral de compensation 50 est enroule autour de laxe 44. Son extremite inferieure est fixee ä celui-ci, tandis que son extremite extdrieure est attachee au pilier 51. Comme precedemment, 1e Support mobile 43, qu:i pivote autour d'un axe 52 (fig. 4b) solidaire de la platine 53, appuie la came 45 contre un gatet ou un doigt 45a, solidaire de la platine 53. La roue de comp- tage 46 engrene avec le pignon solidaire de laxe 54 du ressort moteur d'un dispositif moteur d'avertissement mecanique. Le ressort moteur 55 est, d'u.ne part, fixe ä faxe 54 et, d'autre part, au doigt 56a d'un pont 56 montc Sur la platine 53 par les piliers 51. Alternatively to fig. 4a, the movable support 43 carries a shaft 44 cantilevered and on which rotate, on the one hand, integrally, the cam 45 and the counting wheel 46 and, on the other hand, the drive wheel 47 integral with a slotted barrel 48 and capable, under the action of the cam, of meshing with the toothing of the barrel 49. A compensating spiral spring 50 is wound around the axis 44. Its lower end is fixed to this ci, while its outer end is attached to the pillar 51. As before, the first mobile support 43, which: i pivots around an axis 52 (fig. 4b) integral with the plate 53, supports the cam 45 against a gatet or a finger 45a, secured to the plate 53. The counting wheel 46 meshes with the pinion secured to the axle 54 of the mainspring of a mechanical warning motor device. The mainspring 55 is, on the one hand, fixed to the fax 54 and, on the other hand, to the finger 56a of a bridge 56 mounted on the plate 53 by the pillars 51.

Au sommet de laxe 54 est fixe un dispositif dar ret de 1'avertisseur comprenant un bouton 57 muni d'un doigt 58 destine ü cooperer avec une butde 59 solidaire du pont 56. Le bouton 57 sert ä la fois ä 1'armage du ressort moteur 55 et peut etre molete. Comme prece- demment, an a prevu un mdcanisme de retardement avertisseur ä echappement, dont l'ancre 60 est visible au dessin (fig. 4b). L'axe 54 se prolonge au travers.de la platine 53 et porte 1'aiguille de reveil 61. At the top of the axle 54 is fixed a device for stopping the horn comprising a button 57 provided with a finger 58 intended to cooperate with a butt 59 integral with the bridge 56. The button 57 is used both for winding the spring 55 motor and can be knurled. As before, an exhaust warning delay mechanism has been provided, the anchor 60 of which is visible in the drawing (FIG. 4b). Shaft 54 extends through plate 53 and carries alarm needle 61.

Dans une autre variante (fig. 5a et 5b), oü ]es par- ties communes ä la variante ,prdcedente portent les me- ines references avec indice prime, 1'arbre 54' commande par 1e bouton 57' n'est plus directement sollicitd par 1e ressort moteur 55', ce qui permet de supprimer I'ancien ressort de compensation 50 (fig. 4). En effet, un canon 62 est pivote dans la platine 63 Sur laquelle il est retenu par un clip non represente. Ce canon se prolonge par un doigt axial 64. L'arbre 54' tourne librement dans Je canon 62 et son extremitd inferieure est pivotee Sur la seeonde platine 65. Un second canon 66 solid Ire en rotation de 1'arbre 54' porte un second doigt axial 67 oppose et cooperant avec 1e premier. In another variant (fig. 5a and 5b), where the parts common to the previous variant bear the same references with a prime index, the shaft 54' is controlled by the button 57' and is no longer directly solicited by the first driving spring 55', which makes it possible to eliminate the old compensation spring 50 (fig. 4). Indeed, a barrel 62 is pivoted in the plate 63 On which it is retained by a clip not shown. This barrel is extended by an axial finger 64. The shaft 54' rotates freely in the barrel 62 and its lower end is pivoted on the second plate 65. A second solid barrel 66 in rotation of the shaft 54' carries a second axial finger 67 opposes and cooperating with the first first.

Ainsi, lorsque 1e bouton est RTI ID="0003.0277" WI="14" HE="4" LX="683" LY="2031"> actionne, 1e doigt 67 entre en prise avec 1e doigt 64 et la rotation du canon 62 arme le ressort moteur 55'. La sollicitation radiale de ce ressort s'exerce Sur 1e canon 62 qui prend appui Sur la platine 63, de Sorte que 1'arbre 54' reste libre en rotation. Cet arbre porte par ailleurs une roue 68 engre- nant avec une roue 69 d'un arbre intermdd,iaire 70 monte entre les deux platines. La roue 69 entraine 1e renvoi 71 en Prise avec la roue de comptage 46'. Thus, when the 1st button is RTI ID="0003.0277" WI="14" HE="4" LX="683" LY="2031"> actuated, the 1st finger 67 engages the 1st finger 64 and the rotation of the barrel 62 arms the mainspring 55'. The radial bias of this spring is exerted on the first barrel 62 which bears on the plate 63, so that the shaft 54' remains free to rotate. This shaft also carries a wheel 68 meshing with a wheel 69 of an intermediate shaft 70 mounted between the two plates. Wheel 69 brings idler 71 into engagement with count wheel 46'.

A la difference de la premidre variante decrite, la prdsente construction se distingue encore en ce que 1e Support mobile 43' est directement pivote en 52' dans la Platine 65. Ce Support Porte, comme precedemment, 1'arbre 44'. Lorsque 1'encoche de la came 45' tombe sur 1e doigt 45a', la roue d'entrainement 47' est degrende de la denture 49' du barillet. L'extremite pivotee du Sup port mobile 43' se prolonge par un bras 72 bloquant, dans la Position representee (fig. 5a), 1e marteau 73. Unlike the first variant described, the present construction is further distinguished in that the mobile support 43' is directly pivoted at 52' in the plate 65. This support carries, as before, the shaft 44'. When the notch of the cam 45' falls on the first finger 45a', the drive wheel 47' is released from the toothing 49' of the barrel. The pivoted end of the mobile support 43' is extended by an arm 72 blocking, in the position represented (fig. 5a), the first hammer 73.

Claims

CLAIM Timepiece with alarm, according to the claim of the main patent, characterized by the fact that said counting wheel is pivoted around a fixed axis between the arms of a mobile support, itself pivoted by one end. around a shaft secured to the plate, and comprising said clutch and warning devices. SUB-CLAIMS 1. Timepiece according to claim, characterized in that a cam is mounted coaxially with the counting wheel and has at its periphery a notch and a contiguous stop, said cam being pushed against a roller by a spring acting at the control end of the Support, in such a way that when the roller is in correspondence with the notch] the two wheels are separated from each other, whereas when the first roller bears against the circular face of the cam res two wheels are engaged against 1'action said spring.

2. Timepiece according to claim and sub-claim 1, characterized in that a large modulus wheel mounted coaxially with the cam permanently meshes with a corresponding barrel wheel mounted on the minute and attached to a time counting index.

3. Timepiece according to claim, charac- terisde by the first fact that the control extrem@ite of the pivoting support carries an axis about which pivots a pawl cooperating with the first ratchet of a contact wheel of the warning device.

4. Watchmaking stone according to sub-claims 1 and 3, characterized in that said spring is fixed by one of its RTIID="0003.0550" WI="16" HE="4" LX="1299" LY= "1523"> extremites at one finger of the pawl and by its other end at the plate, so as to act, on the one hand, on the said pivoting support and to apply, on the other hand and simultaneously, the 1st pawl against the 1st ratchet.

5. Hortogerie stone according to claim and 1, to sub-claim 3, characterized by the fact that the first warning device is electric and by the first fact that the contact wheel controls the closing of an electric circuit.

6. Clockwork stone according to sub-claim 5, characterized in that the closing of the electrical circuit is ensured by a metal rod carrying an insulating finger and a conductive pad cooperating with the first pad of a second metal rod, the two studs being joined together when the first insulating finger slides on the surface of the contact wheel and separated when this finger falls into depressions threatened on the surface of the rough head, in correspondence with the play of the pawl on the first ratchet.

7. Timepiece according to sub-claim 3, characterized in that the contact wheel is subjected to the action of a delay device in the form of a lever escapement. B.

Timepiece according to sub-claim 5, characterized by the fact that the contact wheel has insulated sectors and conductive sectors connected to ground and by the fact that an insulated contact slides alternately on these sectors , to engage or disengage the warning device, in relation to the play of the pawl.

9. Timepiece according to claim and] the sub-claims 1 and 2, characterized in that the counting wheel is driven by a rod parallel to the plate actuating a pinion meshed with a corner wheel mounted axially at the counting wheel.

10. Clockwork stone according to sub-claim 9, characterized by the fact that a helical spring is secured by one of its ends to the plate, while its other end is fixed to said pinion, so as to accumulating energy during the driving of the counting wheel by the rod and compensating for the energy losses by friction during the driving of this wheel by the movement.