CH120030A

CH120030A - Device for the automatic winding of timepieces by means of a rotating shaft.

Info

Publication number: CH120030A
Authority: CH
Inventors: Marius Meylan Louis
Original assignee: Marius Meylan Louis
Priority date: 1926-07-21
Filing date: 1926-07-21
Publication date: 1927-08-16

Description

  

  Dispositif pour le remontage automatique de pièces d'horlogerie au moyen d'un  arbre rotatif.    La. présente     invention    se rapporte à un  dispositif pour le remontage automatique de  pièces d'horlogerie au moyen d'un arbre ro  tatif. Ce dispositif s'emploiera avec avantage  pour remonter automatiquement les pièces  d'horlogerie, portées par les automobiles, au  moyen du câble flexible aboutissant au comp  teur de tours.  



  Le dessin ci-annexé représente, à titre  d'exemple, une forme     d'exécution    de l'objet  de l'invention.    La     fig.    1 en est une vue en élévation et  la     fig.    2 une vue en plan; les     fig.        â    et 4 mon  trent un détail; la     fig.    5 se rapporte à une  variante.  



  L'arbre rotatif a destiné à actionner le  compteur de tours présente une vis sans fin  b engrenant avec une roue dentée c creuse,  traversée par un arbre d, . sur lequel sont  fixés la came<I>e</I> et le pignon<I>f ;</I> celui-ci en  grène avec la roue     g    calée sur l'arbre     g'    so  lidaire de l'arbre de barillet, le tout monté  dans un carter     h.    A l'intérieur de la roue c,  la came e calée sur l'arbre d, est entourée par    deux ressorts lames i, dont les extrémités  sont fixées à la roue c.  



  Tant que le ressort de barillet n'est pas  remonté, si l'arbre a tourne, il entraînera la  came<I>r</I> par l'intermédiaire des ressorts<I>i</I> et  produira le remontage du barillet. Si ce re  montage est complet, la came e opposera  une grande résistance aux ressorts i, et     ceux-          ci    commenceront à tourner autour d'elle sans  l'entraîner. Pour diminuer les frottements,  on a monté sur la came e deux galets rota  tifs     e1.     



  Dans la variante de     fig.    5, les deux     res-          sorts-lames   <I>i</I> sont remplacés par un ressort le  en forme -de<B>U,</B> présentant .deux petites fenê  tres dans lesquelles s'engagent les billes de  roulement     Z.    Celles-ci sont     empchées    de tom  ber par les extrémités recourbées en dehors  des branches verticales du U.



  Device for the automatic winding of timepieces by means of a rotating shaft. The present invention relates to a device for the automatic winding of timepieces by means of a rotary shaft. This device will be used with advantage to automatically wind the timepieces, worn by automobiles, by means of the flexible cable terminating at the revolution counter.



  The accompanying drawing represents, by way of example, an embodiment of the object of the invention. Fig. 1 is an elevational view thereof and FIG. 2 a plan view; figs. â and 4 show a detail; fig. 5 relates to a variant.



  The rotary shaft a intended to actuate the revolution counter has a worm b meshing with a hollow toothed wheel c, traversed by a shaft d,. on which are fixed the cam <I> e </I> and the pinion <I> f; </I> the latter in mesh with the g wheel wedged on the g shaft solidary to the barrel shaft , all mounted in a housing h. Inside the wheel c, the cam e wedged on the shaft d, is surrounded by two leaf springs i, the ends of which are fixed to the wheel c.



  As long as the barrel spring is not reassembled, if the shaft has rotated, it will drive the cam <I> r </I> through the springs <I> i </I> and will wind the barrel. If this re-assembly is complete, the cam e will oppose a great resistance to the springs i, and the latter will begin to turn around it without dragging it. To reduce friction, two rotating rollers e1 have been mounted on the cam e.



  In the variant of fig. 5, the two leaf springs <I> i </I> are replaced by a spring 1 in the form of a <B> U, </B> presenting .two small windows in which the balls of Z bearing. These are prevented from falling by the curved ends outside the vertical branches of the U.

Claims

CLAIM Device for the automatic winding of timepieces by means of a rotary shaft, characterized in that the shaft is connected to the barrel spring by a cam integral with one of these two parts and cooperating with a spring integral with the other part, the whole so that the spring and the cam are driven together as long as the barrel is not reassembled and become detached from one another when the winding is complete.

SUB-CLAIMS 1 Device according to claim, characterized in that the cam, generally elliptical in shape, is arranged between two leaf springs. Device according to sub-claim 1, characterized in that the cam carries, rotatably mounted on it, running rollers. 3 Device according to claim, character ized in that the cam is disposed between the two vertical branches of a U-spring. 4 Device according to sub-claim 3, characterized in that each vertical branch of the U-spring has a window serving as a housing for a rolling ball and is bent out to the level of said window to prevent the exit of the ball.

5 Device according to claim, character ized in that the rotary shaft actuates a worm, in turn actuating a gear train, between two moving parts of which the cam and the spring are interposed. 6 Device according to sub-claim 5, characterized in that the worm and the gear train are mounted in a common housing.