CH304779A - Dial. - Google Patents
Dial.Info
- Publication number
- CH304779A CH304779A CH304779DA CH304779A CH 304779 A CH304779 A CH 304779A CH 304779D A CH304779D A CH 304779DA CH 304779 A CH304779 A CH 304779A
- Authority
- CH
- Switzerland
- Prior art keywords
- dial
- signs
- fluorescent material
- luminous
- crown
- 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
- G04B19/00—Indicating the time by visual means
- G04B19/30—Illumination of dials or hands
- G04B19/32—Illumination of dials or hands by luminescent substances
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Description
Cadran. Il est connu d e rendre les cadrans lisibles la nuit en leur appliquant des signes lumi neux ou en les éclairant indirectement, ou en core de porter les signes lumineux sur le verre surmontant le cadran ou dans un cercle de renforcement de ce verre.
Le cadran selon la présente invention est caractérisé en ce qu'une partie de sa surface, en forme de couronne, est recouverte de mal tière fluorescente, dans laquelle les signes apparaissent non lumineux.
L'unique figure du dessin annexé montre une forme d'exécution du cadran selon l'in vention, donnée à titre d'exemple.
Une partie de la surface de ce cadran 1 est recouverte de matière fluorescente 2. Elle présente la forme d'une couronne, dans la quelle apparaissent les signes 3, constitués ici de baguettes supposées appliquées sur le ca dran, mais qui pourraient aussi être des cabo chons, des chiffres ou tout autre.moyen per mettant la lecture de l'heure.
Au lieu de douze signes, il ne pourrait bien entendu n'y en avoir que quatre, dispo sés à trois, six, neuf et douze heures.
On obtient ainsi une très bonne visibilité de l'heure, même dans la pénombre, les signes foncés se détachant très bien de la surface lumineuse relativement grande que constitue la couronne de matière fluorescente.
Dial. It is known practice to make dials readable at night by applying luminous signs to them or by illuminating them indirectly, or even to wear the luminous signs on the glass surmounting the dial or in a reinforcing circle of this glass.
The dial according to the present invention is characterized in that part of its surface, in the shape of a crown, is covered with fluorescent material, in which the signs appear non-luminous.
The single figure of the appended drawing shows an embodiment of the dial according to the invention, given by way of example.
Part of the surface of this dial 1 is covered with fluorescent material 2. It has the shape of a crown, in which the signs 3 appear, here made up of rods supposedly applied to the dial, but which could also be cabo chons, numbers or any other means for reading the time.
Instead of twelve signs, there could of course only be four, available at three, six, nine and twelve o'clock.
Very good visibility of the time is thus obtained, even in half-light, the dark signs standing out very well from the relatively large luminous surface formed by the ring of fluorescent material.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH304779T | 1953-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH304779A true CH304779A (en) | 1955-01-31 |
Family
ID=4492212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH304779D CH304779A (en) | 1953-01-21 | 1953-01-21 | Dial. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH304779A (en) |
-
1953
- 1953-01-21 CH CH304779D patent/CH304779A/en unknown
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