CH328663A - Device for checking the tightness of a waterproof watch case - Google Patents

Device for checking the tightness of a waterproof watch case

Info

Publication number
CH328663A
CH328663A CH328663DA CH328663A CH 328663 A CH328663 A CH 328663A CH 328663D A CH328663D A CH 328663DA CH 328663 A CH328663 A CH 328663A
Authority
CH
Switzerland
Prior art keywords
tightness
indicator
checking
watch case
case
Prior art date
Application number
Other languages
French (fr)
Inventor
Piquerez Ervin
Original Assignee
Piquerez Sa Ervin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Piquerez Sa Ervin filed Critical Piquerez Sa Ervin
Publication of CH328663A publication Critical patent/CH328663A/en

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B47/00Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece
    • G04B47/06Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached measuring instruments, e.g. pedometer, barometer, thermometer or compass
    • GPHYSICS
    • G04HOROLOGY
    • G04DAPPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/006Testing apparatus for complete clockworks with regard to external influences or general good working
    • G04D7/007Testing apparatus for complete clockworks with regard to external influences or general good working with regard to the sealing of the case

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Description

  

      Dispositif   <B>de</B>     contrôle   <B>de</B>     ,.l'étanchéité   <B>d'une boîte de</B>     montre        étanche       La présente     invention    a pour objet un  dispositif de contrôle de l'étanchéité d'une  boîte de montre étanche, comprenant, disposé  de     manière    visible à l'intérieur de ladite boîte,  un témoin dont la teinte change lorsque le  degré d'humidité de l'atmosphère     interne    de  la boîte varie.  



  Ce dispositif est caractérisé par le fait que  ce témoin est porté par la face inférieure de  la glace de la boîte.  



  Le dessin ci-annexé représente, à titre  d'exemple, une forme d'exécution de l'objet  de la présente invention.  



  Les     fig.    1 et 2 sont une section droite,  respectivement un plan de cette forme d'exé  cution.  



  Sur le dessin, 3 désigne la glace de la boîte  et 6 un     témoin    formé d'une pastille en porce  laine poreuse imbibée d'un gel contenant du  chlorure de cobalt et montée dans une bague  métallique 7, laquelle est fixée contre la face  inférieure de la glace, dans la partie centrale  de celle-ci, par exemple par collage, pres  sage, etc.  



  On pourrait aussi pratiquer dans la partie  centrale de la face inférieure de la glace une  petite creusure que l'on     remplirait    avec une  ou deux gouttes d'une dissolution de chlorure  de cobalt dans un gel.    On a remarqué que, lorsqu'une boîte cesse  d'être étanche après avoir séjourné dans de  l'eau, celle-ci reste dans les     joints    de la boîte.

    Lorsque cette dernière se     chauffe,    par exemple  au contact de la peau ou au     soleil,        cette    eau  se     transforme    en vapeur qui vient se déposer  sous forme de fines     gouttelettes    contre la glace  dans la partie centrale de celle-ci, parce     que     cotte glace, dont la     substance    est mauvaise  conductrice de la chaleur, reste froide plus  longtemps que le métal.

       D'autre    part, la partie  centrale de la glace est celle où le témoin se  voit le mieux sans gêner à la     lecture    de l'heure,  puisqu'il recouvre le centre de rotation des       aiguilles.    La substance de ce témoin     pourra,     en     outre,    servir à     absorber    complètement une  petite quantité d'eau entrée dans la boîte, de  façon à empêcher que cette eau attaque le  rouage avant qu'on ait séché la boîte et qu'on  lui ait rendu son étanchéité.



      Device <B> for </B> control <B> of </B>, .tightness <B> of a waterproof watch case </B> The present invention relates to a device for checking the sealing of a waterproof watch case, comprising, arranged in a visible manner inside said case, an indicator whose color changes when the degree of humidity of the internal atmosphere of the case varies.



  This device is characterized by the fact that this indicator is carried by the underside of the glass of the box.



  The accompanying drawing represents, by way of example, an embodiment of the object of the present invention.



  Figs. 1 and 2 are a cross section, respectively a plane of this form of execution.



  In the drawing, 3 designates the glass of the box and 6 a control formed by a porous wool pellet soaked in a gel containing cobalt chloride and mounted in a metal ring 7, which is fixed against the underside of the ice, in the central part thereof, for example by gluing, pressing, etc.



  We could also make in the central part of the underside of the ice a small hollow that we would fill with one or two drops of a solution of cobalt chloride in a gel. It has been noticed that when a box ceases to be watertight after having stayed in water, the water remains in the joints of the box.

    When the latter heats up, for example in contact with the skin or in the sun, this water turns into vapor which is deposited in the form of fine droplets against the ice in the central part of the latter, because of the ice cream, which the substance is a poor conductor of heat, stays cold longer than metal.

       On the other hand, the central part of the crystal is that where the indicator is best seen without interfering with reading the time, since it covers the center of rotation of the hands. The substance of this witness can, moreover, be used to completely absorb a small quantity of water entered in the box, so as to prevent this water attacking the cog before the box has been dried and returned to it. its tightness.

 

Claims (1)

REVENDICATION Dispositif de contrôle de l'étanchéité d'une boîte de montre étanche, comprenant, disposé de manière visible à l'intérieur de ladite boîte, un témoin dont la teinte change lorsque le degré d'humidité de l'atmosphère interne de la boîte varie, caractérisé par le fait que ce témoin est porté par la face inférieure de la glace de la boîte. SOUS-REVENDICATIONS 1. Dispositif selon la revendication, carac térisé par le fait que le témoin est placé sous la partie centrale de la glace. 2. CLAIM Device for checking the tightness of a waterproof watch case, comprising, arranged visibly inside said case, a witness whose color changes when the degree of humidity of the internal atmosphere of the case varies, characterized by the fact that this indicator is carried by the underside of the glass of the box. SUB-CLAIMS 1. Device according to claim, charac terized in that the indicator is placed under the central part of the mirror. 2. Dispositif selon la revendication et la sous-revendication 1, caractérisé par le fait que le témoin est formé d'une pastille en por celaine poreuse imprégnée d'un gel contenant du chlorure de cobalt. Device according to claim and sub-claim 1, characterized in that the indicator is formed of a porous porous cell pellet impregnated with a gel containing cobalt chloride.
CH328663D 1954-12-10 1954-12-10 Device for checking the tightness of a waterproof watch case CH328663A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH328663T 1954-12-10
CH314386T 1954-12-10

Publications (1)

Publication Number Publication Date
CH328663A true CH328663A (en) 1958-03-15

Family

ID=25736017

Family Applications (1)

Application Number Title Priority Date Filing Date
CH328663D CH328663A (en) 1954-12-10 1954-12-10 Device for checking the tightness of a waterproof watch case

Country Status (1)

Country Link
CH (1) CH328663A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1201258B (en) * 1959-06-23 1965-09-16 Hans Ulrich Klingenberg Process for generating a negative pressure inside a watch case and watch case manufactured for carrying out this process
EP3598246A1 (en) * 2018-07-20 2020-01-22 The Swatch Group Research and Development Ltd Watch comprising a device for measuring the degree of relative humidity inside its case

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1201258B (en) * 1959-06-23 1965-09-16 Hans Ulrich Klingenberg Process for generating a negative pressure inside a watch case and watch case manufactured for carrying out this process
EP3598246A1 (en) * 2018-07-20 2020-01-22 The Swatch Group Research and Development Ltd Watch comprising a device for measuring the degree of relative humidity inside its case
JP2020012827A (en) * 2018-07-20 2020-01-23 ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド Watch including device for measuring relative humidity inside watch
CN110737187A (en) * 2018-07-20 2020-01-31 斯沃奇集团研究和开发有限公司 Watch comprising a device for measuring the relative humidity inside the case
US11256217B2 (en) 2018-07-20 2022-02-22 The Swatch Group Research And Development Ltd Watch including a device for measuring the degree of relative humidity inside the watch case
CN110737187B (en) * 2018-07-20 2022-02-25 斯沃奇集团研究和开发有限公司 Watch comprising a device for measuring the relative humidity inside the case

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