CH328663A - Device for checking the tightness of a waterproof watch case - Google Patents
Device for checking the tightness of a waterproof watch caseInfo
- 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
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B47/00—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece
- G04B47/06—Time-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
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
- G04D7/006—Testing apparatus for complete clockworks with regard to external influences or general good working
- G04D7/007—Testing 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)
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)
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 |
-
1954
- 1954-12-10 CH CH328663D patent/CH328663A/en unknown
Cited By (6)
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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