CH247038A

CH247038A - Waterproof winding crown.

Info

Publication number: CH247038A
Authority: CH
Inventors: Favre Georges
Original assignee: Favre Georges
Priority date: 1945-04-05
Filing date: 1945-04-05
Publication date: 1947-02-15

Description

  

      Couronne    de     remontoir        étanche.       L'objet de l'invention est     une    couronne de       remontoir    étanche. Selon l'invention, la cou  ronne comporte un évidement annulaire qui  contient deux     rondelles    en matière plastique,  l'une des rondelles rendant la couronne étan  che     contre    la tranche du     tube    .de la carrure,  l'autre la     rendant    étanche contre le manteau  du tube de la     carrure.     



  Le     dessin    ci-joint montre, à titre d'exem  ple, une forme d'exécution en coupe de l'objet  (le, l'invention.  



  La couronne 1 comporte un     évidement     annulaire 2 à deux     diamètres        différents    lais  sent au milieu un canon 8 pour 1a fixation  de la tige 4 du mouvement. L'évidement 2 est  garni dans sa partie supérieure d'une ron  delle 5 en     matière        plastique    et contient un  ressort hélicoïdal 6 appuyant la rondelle 5  sur la tranche 7 du tube 8  &  la carrure 9.  L'évidement     annulaire    2 présente, dans sa  partie inférieure, un diamètre plus grand que  dans la partie supérieure. Il sert de logement  à une     seconde    rondelle 10 en matière plas  tique.

   La rondelle     plastique    10 est fixée dans  la couronne 1 par une rondelle métallique 11  et s'appuie, d'une part, contre la paroi de la  couronne et, d'autre part, contre le     manteau     du     tube    8 de la carrure 9.  



  Ces deux     rondelles    en matière plastique       agissant    sur la tranche et le manteau du tube  8 de     1a    carrure 9     garantissent    une étanchéité       parfaite    de la couronne.



      Waterproof winding crown. The object of the invention is a waterproof winding crown. According to the invention, the crown comprises an annular recess which contains two plastic washers, one of the washers making the crown watertight against the edge of the tube. Of the middle part, the other making it watertight against the casing. middle tube.



  The accompanying drawing shows, by way of example, an embodiment in section of the object (the, the invention.



  The crown 1 has an annular recess 2 with two different diameters leaving in the middle a barrel 8 for the fixing of the rod 4 of the movement. The recess 2 is lined in its upper part with a plastic washer 5 and contains a helical spring 6 pressing the washer 5 on the edge 7 of the tube 8 & the middle 9. The annular recess 2 has, in its lower part, a larger diameter than in the upper part. It serves as a housing for a second washer 10 made of plastic.

   The plastic washer 10 is fixed in the crown 1 by a metal washer 11 and rests, on the one hand, against the wall of the crown and, on the other hand, against the mantle of the tube 8 of the caseband 9.



  These two plastic washers acting on the edge and the casing of the tube 8 of the caseband 9 guarantee perfect sealing of the crown.

Claims

CLAIM: Waterproof winding crown, characterized by an annular recess containing two washers, one making the crown waterproof against the edge of the tube of the case, the other making it waterproof against the sleeve of the tube. 1st, caseband. SUB-CLAIMS 1. Crown according to claim, characterized in that the recess in the crown has two different diameters. 2. Crown according to claim -and sub-claim 1, characterized in that.

the small diameter recess contains a res out and a plastic washer resting against the crown and the edge of the middle tube. 8. Crown according to claim and sub-claims 1 and 2, characterized in that the part of the large-diameter recess comprises a plastic washer fixed in the crown by a metal washer. 4.

Crown according to claim and sub-claims 1. To 3, characterized in that the large-diameter plastic washer bears against the crown and the mantle of the tube of the middle part.