EP1347349A2 - Crystals, especially watch crystals with inserted stones, in particular precious stones and method of manufacturing of such crystals - Google Patents

Abstract

A watch glass (10) has a time scale from precious, semiprecious or synthetic stones (18) set in the glass using adhesive, solder or a conical gold rim. Includes an Independent claim for a glass lens cover over the jewels.

Description

The present invention relates to glasses, in particular Watch glasses, with inserted stones, preferably in shape of gemstones, especially gemstones, Semiprecious stones and / or synthetic stones and Method of making such glasses.

The object of the present invention is to create Glasses, especially watch glasses, which are shapely integrated dial or an elegant have an integrated time scale and e.g. for installation in serve a wristwatch or pocket watch.

According to the invention, this object is achieved by a glass, especially in the form of a watch glass for installation in a Wristwatch or pocket watch with an integrated dial or an integrated timescale, whereby the Dial or the time scale one, four or twelve or more stones, preferably in the form of diamonds, in particular Brilliant and / or gemstones and / or synthetic Stones and preferably in different Sizes, types of stones and / or colors.

According to the invention, the stones can be placed directly in the glass, preferably with the interposition of a solder glass section be framed.

Alternatively, the stones according to the invention in the glass be framed by means of gold frames, preferably on recesses on their outer surface adjacent to the glass and / or constrictions and / or protrusions or widenings have to keep the frames in the glass improve.

According to the invention, it can be advantageous to have gold frames in To use the shape of a funnel, which is designed and in which a stone, especially a diamond, is set is that he is essentially only in the area of his Rundiste is in contact with the funnel and between an air gap between the bottom of the diamond and the funnel is present, with the funnel at its Anchoring one that extends into the glass plate Can have a foot part with a constricted upper Section and a widened lower section.

According to the invention, the stones can alternatively be used of an adhesive in the glass, instead of Glass or in combination with glass, plexiglass, plastic sheets and / or crystal plates can be used.

According to the invention, one can be used to manufacture the glasses Use a vacuum oven in which a glass with the stone or Diamonds and which is flooded with nitrogen, using the vacuum oven as a work place to surround the stone or diamond in the glass and the Vacuum oven first evacuated before heating and then is flooded with nitrogen and the vacuum oven is preferred evacuated again after the first evacuation and flooding and flooded again with nitrogen and preferably the entire vacuum furnace including the vacuum pump, also with nitrogen during the heating process is flooded so that the vacuum pump has no fresh air sucked in, but nitrogen and a double nitrogen cycle is achieved with a total removal of the Atmospheric oxygen, so that the stone or diamond during the heating process remains undamaged.

According to the invention can be placed in a glass plate at the points to which a diamond should be set one section at a time be inserted from solder glass, which with a, preferably not provided through step hole , into each of which a diamond is inserted, whereby then preferably in a double vacuum oven Nitrogen cycle to a temperature between about 400 and heated to 750 degrees Celsius.

Basically there are two different methods for framing stones in glass:
On the one hand bordering the stone with a gold rim, whereby another suitable material can be used instead of gold. This means that the stone is encased in a material such as gold, and this material is then introduced into the glass together with the stone. A second method is to frame the stone directly into the glass without any surrounding material.

The following difficulties arise when setting stones in glass:
Depending on its composition, glass has different coefficients of expansion, float glass, for example, has a coefficient of expansion of approx. 83 x 10-7, drawn glass around 93 x 10-7, borosilicate glass 34 x 10-7, quartz glasses have even lower coefficients of expansion.

Diamond has a coefficient of expansion of approx. 8 x 10-7 at normal temperature. The hotter the diamond gets its coefficient of expansion becomes higher. At 1000 degrees Celsius is the coefficient of expansion approx. 40 x 10-7.

Not only is the coefficient of expansion at diamond different from glass, but also the change in the coefficient of expansion at the different temperatures is not analogous to glass.

To not only glue the stone into the glass, but around To be able to frame it correctly, the glass must be placed on a Temperature to be heated at which it is at least soft is. This temperature is around 750 degrees Celsius.

With quartz glass, the temperature is much higher, up to 1300 degrees Celsius.

If the stone is now introduced into the glass at high temperature then glass and diamond (or each other stone) different when cooling together. This creates tension at the point where there is touch the two materials. Usually jumps then the glass.

Another problem is that the diamond (pure carbon) at higher temperatures on the surface graphitized, or even burned. Same or similar Damage also occurs with other gemstones.

A third problem is that the effect of the diamond, or gemstone is based on the fact that the light is reflected (preferably a total reflection) on the underside of the stone is directed back upwards and thus catches the eye of the beholder again. The sparkle of the stone is based on these reflections of light inside the diamond (gemstone).

The reflection (in particular the total reflection) takes place due to the different optical densities of Gem and air. The refractive index of the stone (at Diamond the highest ever = 2.54) determines the Angle size of the total reflection angle (with diamond 65 °).

The greater the difference in optical density between the two optical media, the greater the total reflection angle, the better the light output of the back reflected Light and therefore the better the effect of Gemstones (sparkle, fire, dispersion of light, etc.) In places where the diamond or gemstone directly touch the glass when touched there is a completely different optical difference Density than between diamond and air. The difference is much less. So the light is not reflected, but led out into the glass. With that loses the stone of fire and brilliance. So it has to be for reasons the optical effect a contact between glass and Diamond should be avoided if possible.

This can cause the problem of burning the gemstone be avoided that a vacuum oven is used in which the glass is connected to the diamond and which one flooded with nitrogen. It is important that none Residual air remains in the oven and deals with the nitrogen mixed, because even a very small amount of Atmospheric oxygen changes the surface of the Diamonds during the melting process of the glass. According to the invention, a vacuum oven is therefore used as a work station used to frame the stone in the glass. In front When the furnace is heated, the furnace is first evacuated and then floods it with nitrogen.

But you never get a total vacuum. If at Evacuate a residual pressure of one thousandth of a bar remains, then the 0.1 percent original air content is sufficient, which is then mixed with the nitrogen, to still damage the stone. Both normal vacuum pumps you can take the air up to approx. 1 Remove percent residual air, hardly more.

So after the first evacuation and flooding, the nitrogen-air mixture is evacuated again and the furnace is flooded again with nitrogen. Theoretically, you would then have a residual air share of 1 percent of a percent, ie a ten-thousandth of a percent.
But this is only theoretically the case, because if a vacuum pump is able to maintain a vacuum of 1 percent, it means that it sucks in as much air as it does through leaks (often through the pump itself) back into the vacuum entry. So it keeps the balance at about 1 percent pressure (or air). However, the re-entering air changes the air-nitrogen mixture to the disadvantage of nitrogen. If the furnace chamber is evacuated several times and flooded with nitrogen again in order to obtain a residual fraction of air of a fraction of 1 percent, then this low oxygen percentage does not remain the same while the vacuum pump is running, but it slowly shifts back to the one percent ,

Therefore, according to the invention, the entire vacuum furnace is surrounded together with the vacuum pump, during the heating process also with nitrogen or you flood all potential leaks in the vacuum body also with Nitrogen. In this case, the vacuum pump does not suck Fresh air, but nitrogen.

Only achieved with this double nitrogen cycle such a total removal of atmospheric oxygen, that the diamond (or gemstone) is the heating process survives undamaged.

In the inventive method for bordering Diamonds and other stones, as it is especially in the In connection with FIGS. 3a to 11b described in more detail at least the heating is therefore preferably carried out in a vacuum furnace with a double nitrogen cycle.

When you buy nitrogen there are different purities of nitrogen. The normal purity is too technical Is used for purposes sufficient for the invention Purpose not out; you have to use pure nitrogen.

With a diamond we have three zones the different The upper part, the girdle and the lower part.

The top part has the task of letting the light into the stone. The light through the board becomes relative recessed and through the top facets, which are around the board so bent that it is in ideal angle occurs.

The top part also has the task of reflecting Then let the light out of the stone. there the light is through the panel or through the top facets so bent that it is ultimately where possible falls back to where it originally came from. This makes the stone the largest for the viewer Effect.

The lower part of the stone has the task of light which has fallen through the top part to reflect that it goes through again without any loss of light the top emerges, and moreover at the correct viewing angle exit.

The girdle (the connection between the upper part and lower part) usually has only technical meaning and no visual meaning. The girdle is a band around the stone (like a kind of belt), which is perpendicular to the board. If the top and bottom were to meet without a girdle, this would result in a razor-sharp edge with an acute angle. This would lead to breakouts and the stone would always be damaged. That is why a girdle of approx. 1 to 3 percent of the total height of the stone is created with transition surfaces perpendicular to the table around the stone.
Light that hits the girdle from the inside is usually lost in the light play of the diamond. It emerges to the outside or is reflected in such a way that it does not exit through the upper part at the correct angle. If the diamond meets the glass on the girdle, this has no significance for the optical effect of the diamond.

According to the invention, a diamond is preferably inserted into the glass in this way edged that if possible only with the girdle or the immediately adjacent areas of the upper part and Bottom part in the glass sits to the optical qualities of the To get stones. Care should also be taken that the stone is set so that in the "Air area" around the bottom of the stone none Liquids, or skin cream or other Contaminants penetrate. Otherwise he will lose Stein also has its full visual impact. The So stone should be set so that inaccessible Placement of the "air area" surrounding the lower part are watertight.

There are several diamond (or other) options Gemstones) in glass although both materials have different expansion coefficients. A Possibility is to interpose a material which either elastic or flexible in its extension is so that it bridges the different coefficients. Such a material is e.g. Fine gold that itself different expansion coefficients if it sits between glass and diamond.

Gold has a coefficient of expansion of 140 x 10-7, which is larger than that of glass: but because of its softness it doesn't matter. You can melt gold with glass without the glass cracking.

To work with gold as the setting rim of the diamond there are two possible types of gold. Depending on the design requirements you can use yellow gold or fine gold or White gold.

Pure gold is the best material for yellow gold. It most easily connects to the glass. With white gold is an alloy of 85 parts by weight of fine gold and 15 parts by weight of palladium are most suitable.

If you leave the diamond without a bezel for design reasons want to enclose directly in the glass can be used as a buffer material Use "solder glass". This is a jar which is the coefficient of expansion between normal glass and bridge all possible materials (e.g. ceramics) can.

Another method to prevent stress cracks in the glass is to simply remove the diamond from the glass separate. You can grow together with a release agent of diamond and glass during the melting process. However, the release agent mostly changes the optical qualities of the diamond, or is itself visible if it is not transparent. You can but possibly remove it after the melting process. As a result, the diamond sits loosely the version. Depending on the design of the object, this may not be the case be annoying. You can also use the diamond after Fix the melting process of the glass again, e.g. with a fine silicone adhesive that runs along the girdle and connects the stone to the glass at this point. This is also a great way to prevent that Liquid or creams in the "air area" of the diamond setting penetration.

Fig. 1a

eine schematisch gezeichnete Draufsicht einer ersten Ausführungsform eines erfindungsgemäßen Uhrglases;

Fig. 1b

einen schematisch gezeichneten Schnitt längs der Linie b-b durch das Uhrglas gemäß Fig. 1a;

Fig. 2a

eine schematisch gezeichnete Draufsicht einer zweiten Ausführungsform eines erfindungsgemäßen Uhrglases;

Fig. 2b

einen schematisch gezeichneten Schnitt längs der Linie b-b der Fig. 2a;

Fig. 3a

einen schematisch gezeichneten Schnitt durch eine Glasplatte mit einem eingefügten Lot-glasabschnitt, der eine Stufenbohrung aufweist, in die ein Diamant eingeführt ist in vergrößertem Maßstab; vor dem Erhitzen;

Fig. 3b

einen Schnitt analog Fig. 3a durch die Glasplatte und den Diamanten nach dem Erhitzen auf eine Temperatur zwischen etwa 400 und 750 Grad Celsius, angepasst an die Verschmelztemperatur des Lotglases, die je nach Zusammensetzung desselben zwischen 400 und 700 Grad Celsius liegt;

Fig. 4a

einen Schnitt ähnlich Fig. 3a durch eine Glasplatte mit einer Stufenbohrung in die ein Diamant mit einer Goldzarge eingeführt ist;

Fig. 4b

einen Schnitt analog Fig. 4a durch die Glasplatte und den Diamanten nach dem Erhitzen auf etwa 750 Grad Celsius;

Fig. 5a

einen Schnitt ähnlich Fig. 4a durch eine Glasplatte mit einer durchgehenden Stufenbohrung in die ein Diamant mit Goldzarge eingeführt ist, wobei die Stufenbohrung oben mit einer zusätzlichen Deckglasplatte abgedeckt ist;

Fig. 5b

einen Schnitt analog Fig. 5a durch die Glasplatte und den Diamanten nach dem Erhitzen auf etwa 750 Grad Celsius;

Fig. 6a

einen Schnitt ähnlich Fig. 5a durch eine Glasplatte mit einer nicht durchgehenden Stufenbohrung in die ein Diamant mit Goldzarge eingeführt ist, wobei die obere Öffnung der Stufenbohrung mit einer Deckglasplatte abgedeckt ist;

Fig. 6b

einen Schnitt analog Fig. 6a durch die Glasplatten und den Diamanten nach dem Erhitzen auf etwa 750 Grad Celsius;

Fig. 7a

einen Schnitt ähnlich Fig. 6a durch eine Glasplatte mit einer durchgehenden Stufenbohrung in die ein Diamant mit Goldzarge auf den Kopf gestellt, d.h. mit seinem Oberteil nach unten eingeführt ist, wobei die obere Öffnung der Stufenbohrung, die dem Unterteil des Diamanten zugewandt ist, mit einer Deckglasplatte abgedeckt ist;

Fig. 7b

einen Schnitt analog Fig. 7a nach dem Erhitzen auf etwa 750 Grad Celsius;

Fig. 7c

einen Schnitt entsprechend dem Schnitt der Fig. 7b nach dem Abschleifen des Teiles der Glasplatte der in Fig. 7b nach unten über den Oberteil bzw. die Tafel des Diamanten vorsteht und dem anschließenden Wenden der Glasplatte;

Fig. 8a, 8b und 8c

jeweils einen Schnitt ähnlich Fig. 7a, 7b bzw. 7c einer abgewandelten Ausführungsform, bei der der Diamant keine Goldzarge aufweist, sondern im Bereich seiner Rundiste mit einem Trennmittel versehen ist;

Fig. 9a

einen Schnitt ähnlich Fig. 4a durch eine Glasplatte mit einer nicht durchgehenden Stufenbohrung in die ein Diamant eingeführt ist, der jedoch keine Goldzarge aufweist, wobei zwischen dem Diamanten und der Wandung der Stufenbohrung ein Trennmittel vorgesehen ist;

Fig. 9b

einen Schnitt analog Fig. 9a nach dem Erhitzen auf etwa 750 Grad Celsius;

Fig. 10a

einen Schnitt durch eine Glasplatte ähnlich Fig. 9a, wobei die Stufenbohrung an ihrer oberen Öffnung jedoch mit einer Deckglasplatte abgedeckt ist, die im Bereich der Stufenbohrung als Sammellinse ausgebildet ist;

Fig. 10b

einen Schnitt analog Fig. 10a nach dem Erhitzen auf etwa 750 Grad Celsius;

Fig. 11a

einen Schnitt durch eine Glasplatte ähnlich Fig. 4a mit einer nicht durchgehenden Zylinderbohrung, die sich nach oben zu einem Trichter erweitert, in den eine trichterförmige Goldzarge mit einem Diamanten eingeführt ist; und

Fig. 11b

einen Schnitt analog Fig. 11a nach dem Erhitzen auf etwa 750 Grad Celsius.

The invention is explained in more detail below with the aid of schematic drawings of exemplary embodiments.
It shows:

Fig. 1a

a schematically drawn top view of a first embodiment of a watch glass according to the invention;

Fig. 1b

a schematically drawn section along the line bb through the watch glass according to Fig. 1a;

Fig. 2a

a schematically drawn top view of a second embodiment of a watch glass according to the invention;

Fig. 2b

a schematically drawn section along the line bb of Fig. 2a;

Fig. 3a

a schematically drawn section through a glass plate with an inserted solder glass section having a stepped bore into which a diamond is inserted on an enlarged scale; before heating;

Fig. 3b

a section analogous to Figure 3a through the glass plate and the diamond after heating to a temperature between about 400 and 750 degrees Celsius, adapted to the melting temperature of the solder glass, which, depending on its composition, is between 400 and 700 degrees Celsius;

Fig. 4a

a section similar to Figure 3a through a glass plate with a stepped bore into which a diamond with a gold frame is inserted.

Fig. 4b

a section analogous to Figure 4a through the glass plate and the diamond after heating to about 750 degrees Celsius.

Fig. 5a

a section similar to Figure 4a through a glass plate with a continuous step hole into which a diamond with a gold frame is inserted, the step hole is covered at the top with an additional cover glass plate.

Fig. 5b

a section analogous to Figure 5a through the glass plate and the diamond after heating to about 750 degrees Celsius.

Fig. 6a

a section similar to Figure 5a through a glass plate with a non-continuous step hole into which a diamond with a gold frame is inserted, the upper opening of the step hole being covered with a cover glass plate;

Fig. 6b

a section analogous to Figure 6a through the glass plates and the diamond after heating to about 750 degrees Celsius.

Fig. 7a

a section similar to Fig. 6a through a glass plate with a continuous step hole in which a diamond with a gold frame is turned upside down, ie with its upper part inserted downwards, the upper opening of the step hole, which faces the lower part of the diamond, with a Cover slip plate is covered;

Fig. 7b

a section analogous to Figure 7a after heating to about 750 degrees Celsius.

Fig. 7c

a section corresponding to the section of Figure 7b after grinding the part of the glass plate which in Figure 7b protrudes down over the upper part or the table of the diamond and then turning the glass plate.

8a, 8b and 8c

7a, 7b and 7c, respectively, of a modified embodiment in which the diamond does not have a gold frame, but is provided with a release agent in the region of its girdle;

Fig. 9a

a section similar to Figure 4a through a glass plate with a non-continuous step hole into which a diamond is inserted, but which has no gold frame, wherein a separating agent is provided between the diamond and the wall of the step hole.

Fig. 9b

a section analogous to Fig. 9a after heating to about 750 degrees Celsius;

Fig. 10a

a section through a glass plate similar to Figure 9a, but the stepped bore is covered at its upper opening with a cover glass plate which is formed in the area of the stepped bore as a converging lens;

Fig. 10b

a section analogous to FIG 10a after heating to about 750 degrees Celsius.

Fig. 11a

a section through a glass plate similar to Figure 4a with a non-continuous cylinder bore that widens upwards to a funnel into which a funnel-shaped gold frame is inserted with a diamond. and

Fig. 11b

a section analogous to Fig. 11a after heating to about 750 degrees Celsius.

1a shows a first embodiment in plan view of a glass according to the invention, the watch glass 10 with an integrated dial, or one integrated time scale is formed, the four stones 18 in the form of diamonds, which directly in the Watch glass 10 are edged. Instead of the four diamonds 18 can also use other diamonds and / or gemstones and / or synthetic stones of uniform size, Color and type of stone or in different sizes, Colors and types of stones can be used. Doing so for a dial or a time scale one, four or twelve or used more stones. As from Fig. 1b the stones 18 can be seen directly in the watch glass 10 edged. It can also be seen from Fig. 1b that the Watch glass 10 has an edge 12 and in the area of Lower part of the stones 18 each have a recess 15b Air area between glass and diamond.

2a shows a second embodiment in plan view of the watch glass according to the invention, which is similar to Fig. 1a is, the stones 28 each a stone setting have in the form of a gold frame 27 and with this Stone setting are incorporated into the watch glass 20. As can be seen from Fig. 2b, the watch glass 20 has below the stones 28 each have a recess 25b and is provided with an edge 22.

3a and 3b show an inventive method for direct mounting of a diamond 18 in a glass plate 10 with an inserted solder glass section 11, the one Has stepped bore 14a, 15a with an annular shoulder 16, the diamond 18 from above in the stepped bore 14a, 15a is introduced. The arrangement of glass plate 10, 11 and diamond 18 are adjusted to the melting temperature of the solder glass, depending on the composition between 400 and 700 degrees Celsius a temperature between about 400 and 750 degrees Celsius heated. After this heating, a uniform one is obtained Glass plate 10, 11, i.e. is the solder glass portion 11 no longer recognizable and the diamond 18 is with its Girdle 19 melted into the glass.

4a and 4b show a method for edging a Diamonds 28 by means of a gold frame 27 in a stepped bore 24a, 25a of a glass plate 20, the stepped bore is designed so that the diamond 28 with his gold frame 27 to rest against the ring shoulder 26 comes. After heating to about 750 degrees Celsius one a stable, firm mounting of the gold frame and the diamonds set in the gold frame 28 in the Glass plate 20, with the diamond 28 separated from the glass remains, as can be seen from Fig. 4b.

5a shows a section through a glass plate 30b a continuous stepped bore 34a, 35a into the Diamond 38 is introduced with a gold frame 37, whereby the step hole at the top with an additional cover glass plate 31 is covered. After heating to about 750 The glass plates 30a and 31 are one degree in degrees Celsius Glass plate 30b fused, as shown in Fig. 5b is.

Fig. 6a shows a section similar to Fig. 5a through Glass plate 30c with a non-continuous step hole 34a, 35c in which a diamond 38 with a gold frame 37 is inserted, the upper opening of the stepped bore is covered with a cover glass plate 31. After this The glass plates are heated to around 750 degrees Celsius 31 and 30c fused into a glass plate 30d, as from Fig. 6b can be seen and the diamond 38 is in one closed cavity 34b, 35d melted.

Fig. 7a shows a section similar to Fig. 6a through Glass plate 30e with a continuous stepped bore 34e, 35e into a diamond 38 with a gold frame 37 on the head posed, i.e. with its top inserted down with the upper opening of the stepped bore 34e, 35e, which faces the lower part of the diamond 38 with a cover glass plate 31 is covered. As shown in Fig. 7b can be seen after heating up about 750 degrees Celsius a uniform glass plate 30f. After that, the part of the glass plate 30f becomes that shown in Fig. 7b grinded down over line 33 protruding, so that the surface of the glass plate matches the surface i.e. the table of the diamond 38 is aligned and after that The glass plate shown in FIG. 7c is turned 30g.

8a, 8b and 8c each show a section similar 7a, 7b and 7c of a modified method, respectively which the diamond 38 has no gold frame, but in Area of its girdle 39 with a release agent 40 is provided, which is preferably applied as a paste, the z. B. from a mixture of finely ground Graphite powder and spirit or fine grain kaolin and Water can exist.

After the paste has dried it will be at about 750 degrees Celsius heated and you get, as in Fig. 8b shown, a uniform glass plate 30f that up is ground to line 33. Further through Wash away the release agent. The diamond is however, even after removing the release agent in the Cavity 35f, although kept loose because of the Diameter of the bore 34e slightly smaller than that Outside diameter of the diamond 38 was chosen as from 8a can be seen.

According to the diamond after removing the Release agent through an adhesive 41, preferably one Silicone adhesive that runs along the girdle again be fixed, with the ventilation area 35f at the same time against the ingress of liquids and creams or Like. Is protected.

Fig.9a shows a section through a slightly thicker Glass plate 30h with a deep but not continuous Stepped bore 34h, 35h, one in the bottom and Spread the middle area with a release paste 40 Diamond, preferably introduced from above. After the paste has dried it will be at about 750 degrees Celsius heated, whereby the glass tends to Enclose diamonds 38. After cooling and the Removing the release agent fits the Diamant 38 loosely the cavity 35i, which is an air region between diamond and glass, and can be made using an adhesive 41 be fixed.

10a shows a section through a glass plate 43 a continuous stepped bore, the lower part 47 a smaller one and its upper part 48 a larger one Diameter than the diamond 38, the glass in the area of the ring shoulder 49 with a separating paste 40 is brushed and then the diamond 38 from above into the Hole 48 is inserted. Then the hole 48 covered by a glass plate 44, in which Area of bore 48 above diamond 38 as convex bulge 45 a converging lens is integrated, which enhances the optical effect of the diamond.

When heated to about 750 degrees Celsius Glass plates 43 and 44, preferably by fusing that according to the invention in a vacuum oven, preferably with double nitrogen cycle, takes place to air or Avoid gas bubbles to a glass plate 43g interconnected, as shown in Fig. 10b. To removal of the release agent, the diamond 38 fixed in the cavity 48g, 47g by means of an adhesive 41 become.

11a shows a section through a glass plate 30j with a non-continuous two-part bore, the lower part 55 as a cylinder bore with a smaller one Is formed diameter and the upper part 56 itself funnel-shaped expanded to a larger diameter and receives a funnel-shaped gold frame 50 in which a diamond 38 is set to be essentially only in the area of its girdle 39 with the funnel 51 Gold frame 50 is in contact and between the lower part of the diamond 38 and the funnel 51 an air gap 60 is present, the gold frame 50 one in the Cylinder bore 55 of the glass plate 30j extending into it Foot part 52, 53 has a constricted at 52 upper section and a widened lower section 53. When heated to about 750 degrees Celsius the glass of the glass plate 30k in intimate contact with the gold frame 50 and in particular its base 52, 53, so that the gold frame 50 is securely anchored becomes.

The present invention is all individually or in combination in the above description attached drawings and / or the following claims disclosed features.

Claims (10)

Glass, in particular watch glass, characterized by stones arranged in the glass (10, 20) and arranged in the form of a pattern, in particular a pattern designed as a time scale or dial, in particular gemstones, semi-precious stones and / or synthetic stones (18, 28, 38) , Glass according to claim 1, characterized in that it is designed as a watch glass (10, 20) for installation in a wristwatch or pocket watch with an integrated dial or an integrated time scale, which or the one, four or twelve or more stones (18; 28; 38), preferably in the form of diamonds, in particular diamonds and / or gemstones and / or synthetic stones and preferably in different sizes, types of stones and / or colors. Glass according to claim 1 or 2, characterized in that the stones (18) are enclosed directly in the glass (10), preferably with the interposition of a solder glass section (11). Glass according to claim 1 or 2, characterized in that the stones (28, 38) are enclosed in the glass (20, 30a, 30c, 30e, 30j) by means of a gold frame (27, 37, 50), which is preferably attached to it the glass adjacent outer surface has recesses and / or constrictions (52) and / or projections or widenings (53). Glass according to Claim 4, characterized in that the gold frame (50) has a funnel (51) which is designed and in which a stone, in particular a diamond (38), is set such that it is essentially only in the region of its girdle (39) is in contact with the funnel (51) and there is an air gap (60) between its lower part and the funnel (51), the gold frame (50) preferably being a foot part extending into the glass plate (30j or 30k) (52, 53) has a constricted upper section (52) and a widened lower section (53). Glass according to one or more of claims 1 to 5, characterized in that the stones or diamonds (28, 38) are arranged in stepped bores (47, 48) in the glass (43) and with a glass plate (44), preferably with converging lenses integrated therein (45) are covered, the converging lenses (45) being arranged in the glass plate (44) in each case in the region of a stepped bore (47, 48) and in each case above a stone or diamond (28, 38). Glass according to claim 1 or 2, characterized in that the stones (38) are fixed in the glass (30g, 30i, 43g) by means of an adhesive (41), instead of glass or in combination with glass, plexiglass, plastic plates and / or crystal plates can be used. Process for the manufacture of a glass, in particular watch glass, according to one or more of claims 1 to 7, characterized in that a vacuum furnace is used in which the glass is connected to the stone or diamond and which is flooded with nitrogen, the vacuum furnace being Workplace is used to insert the stone or diamond into the glass and fix it in the glass and the vacuum furnace is first evacuated before heating and then flooded with nitrogen and the vacuum furnace is preferably evacuated again after the first evacuation and flooding and flooded again with nitrogen and preferably the entire vacuum furnace, including the vacuum pump, is also flooded with nitrogen during the heating process, so that the vacuum pump does not draw in fresh air, but nitrogen and a double nitrogen cycle is achieved with a total removal of the atmospheric oxygen, so that the stone or diamond is released during the heating process temperatures which are in the range of about 400 to about 750 degrees Celsius, remains undamaged. Method according to Claim 8, characterized in that a section (11) made of solder glass is inserted in a glass plate (10) at the points at which a diamond (18) is to be set, said section being provided with a preferably non-continuous stepped bore (14a, 15a), into each of which a diamond (18) is introduced, then heated in a vacuum oven, preferably with a double nitrogen circuit, to a temperature between about 400 and about 750 degrees Celsius. A method for producing a glass according to claim 4 or 5, characterized in that the stones or diamonds (28, 38) are set in gold frames (27, 37, 50) and in a glass plate (20, 30a, 30c, 30e, 30j ) Drilled holes (47, 48, 55, 56) are used and then heated in a vacuum oven, preferably with a double nitrogen circuit, to a temperature of about 750 degrees Celsius.

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