JPH048375B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION BACKGROUND OF THE INVENTION Continuous production of sheet or panel and tubular glass products is known. There is a constant need in the industry for new equipment and methods to produce products that are more economical or of higher quality.

However, none of the prior art methods is capable of producing a glass sheet having, for example, one side of the glass sheet with one type of glass composition and the other side with a different glass composition. Furthermore, the prior art methods
It is not possible to form double sheet glass panels or windows in a continuous process, with each glass panel having an air gap and closing the ends at the same time.

Additionally, some of the most widely used methods for producing glass tubes involve relatively expensive processes that require maintaining the glass batches at the correct temperature as they enter the forming section to produce high-quality glass products. Requires feeding equipment.

The present invention provides a method and apparatus that provides significant benefits and enhances the possibilities for economically manufacturing such glass products.

SUMMARY OF THE INVENTION The present invention generally relates to apparatus and methods for continuously manufacturing sheet panel or tubular glass or glass-ceramic products. The compact also provides a greatly improved path for glass flow during the forming process in a manner that eliminates the need for expensive feeders that are typically required to maintain the glass mass at the correct temperature in prior art methods. Also provided. The upper part of the molded body is equipped with a gutter device for storing the molten glass mass. Glass overflowing from the trough arrangement communicates with each of the upper diverging wall locations separately and flows downward to the point where the flow meets the bottom diverging wall locations of the compact. The glass mass then flows down onto this lower or bottom diverging wall device. When producing sheet products, the flowing glass meets at a point near the exit opening formed at the far end of the divergent wall device. The shape of the top and bottom parts of the molded bodies and their wall arrangement and outlet openings are shaped according to the desired shape of the product to be produced.

A nozzle arrangement can be used to cooperate with the structure of the molded body wall locations to create the desired product structure and to provide proper cooling and air gaps between the formed glass walls.

According to another embodiment of the invention, the gutter device for housing the glass mass may be provided with a divider wall forming two separate gutter. Different compositions of glass may then be fed in each trough for feeding glass sheets, tubes or double glazed panels, for example those incorporating different glass compositions on each side of the final product.

OBJECTS OF THE INVENTION It is therefore an object of the present invention to provide an apparatus and method for manufacturing glass sheets or tubes that provides high quality yet economical production.

Another object of the present invention is to provide an apparatus and method of the type described above that is easily adaptable to varying compositional parts to accommodate various shapes and dimensions of a given glass product.

Yet another object of the invention is, in one of its embodiments, to provide an apparatus and method for manufacturing continuous, simultaneously formed, double glazed panels separated by internal air gaps. be.

Another object of the present invention, in one of its embodiments, is to form a single glass sheet product in which the sheet product formed is comprised of two separate layers of different glass compositions.

Other objects and advantages of the invention will become apparent from the following description of the drawings, in which embodiments of preferred forms of the invention are clearly shown.

DETAILED DESCRIPTION Apparatus and methods for use in a continuous process for the manufacture of sheet, double panel or tubular glass products constructed in accordance with the present invention are illustrated in FIGS. This is shown in Figure 3.

In the specific example of FIG. 1, the whole is 10 and 2
Two separate glass furnaces, designated 0, are preferably used to feed the molten glass mass from each furnace to respective trays, designated 12 and 22. A molded body 30 arranged in the usual manner in a fireproof partition, designated by the reference numeral 29, is located in the upper part 3.
2 and a lower part 34.

The upper part 32 of the molded body 30 is connected to each tray 1.
Two longitudinally extending reservoirs or troughs 36 are provided for receiving the glass flow from 2 or 22. These troughs 36 are separated from each other by longitudinally extending dividing walls 38. The upper molding 32 has a pair of outwardly divergent wall locations 40 that receive an overflow portion of the glass mass fed to the trough 36. As best seen in FIGS. 4 and 5, the upper part 32 of the molded body is extended over the lower part 34 by a pair of unfinished walls 42 resting on an upper edge 43 of the lower part 34 of the molded body. It is preferable to support The width of the diverging wall location 40 at its lower end is smaller than the width of the upper opening of the lower part 34 of the molded body.

The lower end of each wall or surface 40 is connected to the lower part 34 of the formed body.
may terminate in a vertically oriented edge 41 extending downwardly into a recess or groove 45 formed in an edge 43 of the holder. The wall disposed inside the groove 45 has an edge 47 . When glass is initially poured from wall 40, each groove 45 must be filled before glass flows from edge 47. Therefore, groove 45
The outflow is directed over the edge to an inwardly converging wall 46 provided in the lower molding 34.

Groove 45 actually forms a secondary containment tank or reservoir for the glass mass that is inadvertently lost in the glass flowing out from the first reservoir formed by groove 36. It serves to further precipitate or separate solid impurities.

Furthermore, since the glass mass flowing down the wall 40 has to flow under the edge 47 before reaching the wall 46 of the lower part of the molded body, this glass flow path directs the glass mass towards the outlet 48 in the lower part of the molded body 34. provides a means of controlling the cooling rate of the glass mass as it flows down.

As the glass mass flows down on the inwardly converging walls 46, the separate streams of glass from each trough 36 and groove 45 merge before exiting through the outflow slot 48 provided in the lower part 34 of the formed body. Form one glass sheet. The width of the exit slot 48 is approximately equal to the thickness of the glass sheet being formed. The width of the glass sheet is determined by the horizontal length dimensions of walls 40 and 46 and outlet slot 48.

The walls 40 and 46 form the working surface during the initial processing of the glass, and the particular dimensions and angles forming the walls are such that the glass mass will not be affected as it flows down the trough 36 and finally out the outlet 48. have a direct influence on maintaining the desired temperature, cooling rate and viscosity of the

As shown in FIG. 1, the combined sheet or hot ribbon of glass emerging from outlet 48 is then passed in the usual manner between a suitable support roller, generally designated 50, and a conventional refrigerator, generally designated 49. Basically, it is processed by passing it through.

When utilizing the apparatus shown in FIG. 1 according to the method of the invention, each glass channel 10 and 20 is preferably filled with a glass composition exhibiting different properties depending on the desired application. For example, in a particular application, a relatively thin coating of an expensive glass composition with special properties can be bonded to a common inexpensive glass composition to size the particular sheet being formed. Other applications use glass compositions of different colors so that one side of the sheet has a different color than the local layer, or one layer is tinted or tinted and the other layer is transparent. You can also do that.

Glass flow from each furnace to its respective trough 36 is controlled by conventional gates or valves such as those shown at 14. Therefore, the flow from each trough 36 to each of the diverging walls 40 can also be adjusted to adjust the thickness of each layer of glass sheet formed. Before the glass begins to flow, burners indicated at 16 and 18 are used to heat the area surrounding the outlet opening 48. Warm air is then forced upwards to warm the bottom and top of the compact. Due to the concave roof 31 provided on the top 32 of the molded body, this warm air tends to remain. This provides a means of heating wall 40 and inwardly diverging wall 46 to a uniform initial temperature.

In accordance with conventional processing methods, several burners, designated 16 and 18, can be used and their angles adjusted to obtain the appropriate desired temperature. After starting the process, auxiliary burners such as 16 and 18 can be adjusted or even switched off if they are no longer needed.

Upon opening the gate or valve 14, the glass mass begins to flow into the trough 36. When the trough 36 overflows, the glass mass flows down the working faces of the walls 40 and 46 and joins just before the outflow opening 48.

A single hot ribbon of glass exits the outlet 48 and engages conventional rollers, indicated at 50, which guide and process the hot ribbon and provide support before entering a conventional water-cooled refrigeration system 49. . Other conventional rollers may also be used to support the glass emerging from the refrigerator 49 and be processed over another set of rollers 51, typically made of graphite or other suitable material. The roller 51 is
It serves to horizontally move the ribbon and guide it into a conventional annealing furnace, indicated at 52. After appropriate annealing, the ribbon can be conventionally cut to the desired length to form a particular sheet glass product. What it generates is
A single glass sheet formed from two separate layers of glass. An example of an application for a sheet glass made by the method described above is a sheet glass made of an infrared blocking composition.
Formation of sheet glass with layers. Many other practical applications are possible using the method and apparatus of the invention.

It should also be understood that the shape of the compact 34 helps to favorably adjust the temperature gradient of the glass mass flowing down the wall locations 40 and 46, thus allowing superior quality glass to be produced.
By using different angles and dimensions, the glass mass can be flowed through longer or shorter channels to affect the cooling rate and viscosity of the glass mass. In this compact, the feed channels from the glass furnace used can be relatively simple and inexpensive compared to those required in prior art sheet forming equipment, and the total cost of installing such equipment can be reduced.

Furthermore, it is easier and faster to change the thickness or width dimension of the glass sheet product compared to prior art methods by simply removing the top or bottom part of the molding and replacing it with another desired one. be able to.

Referring to FIG. 2, another embodiment of the present invention is shown in which double glazed panels are simultaneously formed in a continuous process. Identical elements of the apparatus shown in FIG. 2 as compared to elements of the apparatus shown in FIG. 1 have the same reference numerals with a lowercase a added to indicate this general identity.

The embodiment of FIG. 2 has an installation of two furnaces 10a and 20a with the same feed devices and gate valves as shown in FIG. However, it should be understood that there is no need to use two furnaces or different compositions if it is not desired to form final products with different compositions.

Additionally, it should be understood that gutter 36a is shown separated by divider 38a. However, divider 38a is only necessary if a separate glass composition is to be used. Molded body 3
4a has a shaped body upper part 32a with a working surface in the form of a downwardly diverging wall position 40a. However, the shape of wall 40a is different compared to the embodiment of FIG. As best seen in FIGS. 6, 7 and 8, each wall 40a has an unfinished portion 41.
It curves inward as it approaches a. Similarly, the inwardly converging walls 46a of the lower section 34a are inwardly tapered and curved as they approach the longitudinal end section 47a. wall 4
The shape of the outer end of 0a and the top opening of wall 46a in the lower section 34a are related to the desired shape of the double glazed panel to be formed.

It will be seen that another difference in the embodiment of FIG. 2 compared to FIG. 1 is in the shape of the outflow opening 48a. The opening also has an end having a contour of approximately the same geometry as desired at the outer end of the double glazed panel being formed. The outflow opening 48a also includes curved extensions 54 at each end that conform to the shape of the outer ends of the double glazed panel being formed. These extensions are
It is important to provide additional surface area to the ends of the glass panels formed as described below.

FIG. 2 and FIG. 10 particularly show the lower part of the molded body 3.
4a shows a nozzle section provided and arranged inside. This nozzle, usually designated 60, is enclosed in a conventional rectangular metal box or enclosure 61 protected by a cover of a suitable refractory material, designated 62.
has. The metal part 61 is provided with facilities for circulation of air and cooling water, as will be explained in detail below.

As shown in FIGS. 9 and 10, the outer protective ceramic cladding 62 is designed according to the appropriate shape of the desired double glazed panel. The desired thickness of the walls of each glass panel is determined by the ceramic construction surrounding the metal nozzle 61 in order to adjust the gap between the wall 46a and the cladding 62 through which the glass mass must pass before reaching the outlet 48a. This can be advantageously adjusted by varying the shape of the fireproof coating.

Therefore, the thickness and shape of the individual panels formed can be varied simply by changing the ceramic cladding 62 which is adapted to fit around the rectangular section 61. The use of an asymmetrical ceramic coating also allows the double panels formed to have different thicknesses or shapes (see FIG. 15). If desired, the glass mass feed rate is adjusted to provide the correct amount of glass mass flowing into the lower part of the compact to obtain the designed final dimensions.

Covering 62 preferably includes a pair of tapered rib-like extensions 63 formed at each end, as shown in FIGS. 10 and 11. As best seen in FIG. 10, the extension 63
a and thus supports that part of the weight of the nozzle arrangement which is also supported by the water conduit 64. Moreover, the extension part 63
facilitates maintaining the coating 62 in the proper vertical position within a.

The metal box or enclosure 61 has an inlet conduit 64 for water with an internal conduit 66 carrying air.
A water conduit 64 with a large diameter has an outlet 68 for supplying cooling water to the enclosure 61 . Stopper 7
0 isolates incoming water from an outlet 74 through which water exits via an extension of conduit 64. Cooling water can be circulated within the enclosure 61 as can be readily seen. Metal bottom 72 confines the water flow within the confines of enclosure 61 except for outflow from outlet 74 .

Air conduit 66 has a right-angled extension passing through the sealed opening of conduit 64 and extends downwardly through the bottom or floor 72. A floor 72 is provided to manage the airflow initially adjacent the outer end of the outlet opening 48a.
Preferably, a groove 76 for communicating airflow is provided in an outlet 78 disposed toward the outermost end of the air outlet 78 . conduit 66
The air supplied to the air preferably contains very low moisture content and is directed into the gap between the double panels being formed, as explained below.

The glass mass contained in the trough 36a is separated and flows down along the working surface of the wall 40a and then onto the working surface of the wall 46a in the compact bottom 34a. The contours of walls 40a and 46a allow the separated glass flow to flow between wall 46a and ceramic coating 62.
Point downward toward the space formed between the two.

As the separated glass mass stream flows down,
The ends merge together before reaching outlet 48a. For glass flows that meet at the ends of each longitudinally disposed sheathing 62, the intermediate portion is
and the size and shape of wall 46a and outflow opening 48a. In this case, when the glass stream exits the outlet 48a, it is gradually cooled at a predetermined rate such that the glass stream reaches a temperature that maintains its shape.

Extended edges 54 surrounding the outer longitudinally spaced ends of the nozzle 60 provide an additional working surface for each end of the glass mass to maintain the desired shape of the glass panel being formed. It functions to ensure that sufficient cooling is performed.

Air supplied via conduit 66 is directed into the gap between double panels 81 to equalize the atmospheric pressure as the formed double panels exit outlet 48a.

Conventional support and transport equipment with water-cooled refrigerators can be used to handle and process this double panel 81 in a conventional manner. Such devices are indicated at 83 and 85 in FIG. Using a pair of pressure rollers, indicated at 87, arranged for reciprocating horizontal motion, the panels 81 are moved together to form partially sealed top and bottom ends of a double glazed panel with predetermined dimensions. It can be done. After further appropriate cooling, the portions of the panel formed between such impressions, indicated at 89, can be annealed and then cut in a conventional manner.

The plan view shown in FIG. 12 represents a typical double panel configuration simultaneously formed according to the present invention. As shown in FIG.
The double panel shown at has a pair of side walls 102 joined at opposite ends by an end wall 104.

If desired, the shape of the ceramic sheath 60 and the lower molded body portion 34a can be designed to provide a double panel with a particular shape in the end wall 104. For example, recesses or grooves or outwardly extending edges can be provided as desired. In such a case, the outlet opening 48a
A suitable roller disposed adjacent to the glass composition may be used to facilitate forming such a shape and at the same time typically assist in supporting the glass composition in a conventional sense.

In another advantage of the present invention, panel section 106 includes thickened reinforcements, such as 110, to increase the strength of the panel. Such separation panels can be advantageously used in structural applications such as wall sections, especially when using high strength glass-ceramic compositions.

To manufacture panels 106 and 108, ribs 6 having different shapes, as shown in FIG.
3 and extend it to the entire length of the coating 60. This structure prevents the separate downwardly flowing glass masses from joining together, resulting in the formation of two separate panel sections, as previously described in other embodiments.

The reinforcing member 110 is formed by spacing along the sides of the ceramic sheathing 60 and providing a suitable recess, indicated at 112, disposed adjacent the outlet opening 48a.

From the above description, it will be readily understood that the described method and apparatus simultaneously provide a continuous method for forming double panels and the like. The length and width dimensions and distances between width and length features can be adjusted within relatively reasonable limits for most commercial applications.

The apparatus of the present invention not only provides an apparatus for simultaneously forming double glazed panels, but also provides for formed panels in which each side of the panel can be formed from separate and different glass compositions. This choice opens up many possibilities, such as using a different composition for the other panel of a double panel that has desired properties that do not need to be used in one panel.

Next, specifically referring to FIGS. 3 and 16 to 21, in order to manufacture a tubular body,
Another preferred embodiment of the invention is shown.

Parts that are the same as previously described are designated by the same reference numerals, and parts that are similar but modified with respect to the present example are designated by the same reference numerals and the letter "b".

To explain with reference to FIG. 3, a pair of glass furnaces 1
0 and 20 are connected to the molded body upper part 32b via the supply grooves 12 and 22, which are also equipped with the gate valve 14.
It communicates with a pair of reservoirs 36b disposed therein. It should be noted that if two separate glass compositions are not used to form the tubular final product, there is no need to use separate furnaces, feeders and dividers 38b. However, other than the formation of the tube with dissimilar compositions in each half,
The method and apparatus function similarly as with divider 38b or a single reservoir.

The molded body upper part 32b is generally conical and includes a reservoir 36b, a divider 38b and each reservoir 36.
It comprises an outwardly sloping wall 40b forming a working surface for receiving the glass mass flowing out from b.

The upper part 32b of the molded body has a pair of support legs 80 which are extensions of the divider 38b, and the glass mass is made to flow through a portion where the inner wall 46b is approximately vertical and whose diameter is approximately equal to the diameter of the opening 48b. be.

Work wall surface 4 communicating with inner work wall surface 46b
The glass mass from 0b is divided as it flows from a separate reservoir 36b to the end of rib 84. At this point, the split streams of glass mass continue to flow downwardly towards the outlet 48b and merge as they form an enclosed tubular shape.

A nozzle arrangement, generally designated 60b, is mounted and supported within the lower body portion 34b. Typically, nozzle arrangement 60b provides a source of cooling water through T-shaped conduit 88 and air through conduit 90. Preferably, the nozzle has a protective cigar-shaped ceramic coating 92. The air in conduit 90 communicates separately through an outlet 100 at the bottom of nozzle arrangement 60b into the hollow space of the formed glass tube emerging from outlet 48b to help maintain the shape of the tube. Of course, outlet 100 is provided with a seal to prevent communication with water in conduit 88 circulating therein.

Referring to FIG. 3, the hollow glass tube 94 emerging from outlet 48b is subjected to conventional processing by rollers 96 as it is transferred to a conventional refrigerator, indicated at 98. The formed tube can then be annealed and then subjected to further conventional cutting or processing, if desired. The nozzle device 60b is
Although it can be made of the same material as the nozzle device 60a, the shape is different.

A second modified body top and bottom illustrating an example of a tube forming device constructed in accordance with the present invention.
0 and 21, three legs 80 are used and divider 38b is eliminated to form only one reservoir 36b. If a relatively large diameter tube is made and the size of the device requires additional stability to adequately support the upper part 32b on the lower part 34b, two or more legs may be used. It is desirable to use However, if more than two legs are used, stabilizing legs such as 82 are not required.

Flow from the single reservoir 36b in the embodiment of FIGS. 20 and 21 is directed to a working wall surface 40b between legs 80 with extensions 79 that contain the outflow of glass and direct it toward wall 40b. In all other cases, the manipulation and formation of the glass tube is the same as described above.

When using the three leg design shown in FIGS. 20 and 21, the air and water conduit 8
Preferably, slightly modified versions of the 8 and 90 designs are used. To stabilize the ceramic sheath 92, it is desirable to use an extension of the conduit 88 in the third leg that also carries circulating water out of the device.

From the above description, novel methods and apparatus for forming glass or glass-ceramic sheets, double panels or tubes are disclosed which have significant advantages over prior art methods and apparatus. .

As an additional benefit, FIGS. 9 and 10 show that a plurality of nozzles 104 extend below the outlet opening 48a.
1 shows the installation of a separate conduit 102 with .
If desired, the methods and apparatus described herein can be readily adapted to spray coating one or both of the interior surfaces of double glazed panels formed using the embodiment described in FIG. I can do it.

The coating used may be of any type that can be applied by fluid spray from nozzle 104.

[Brief explanation of drawings]

FIG. 1 is a front elevational view of an apparatus for producing sheet glass products constructed in accordance with the present invention;
The cross section is taken along the centerline of the device.
FIG. 1-A is a side cross-sectional view of the apparatus shown in FIG. 1, with the section taken along line A-A. FIG. 2 is a cross-sectional view of another embodiment of an apparatus for producing glass products constructed in accordance with the present invention, with the cross section taken along the centerline of the apparatus.
FIG. 3 is a cross-sectional view of another embodiment of an apparatus for producing glass products constructed in accordance with the present invention, with the cross section taken along the centerline of the apparatus.
FIG. 4 is a sectional view showing only the upper and lower parts of the molded body of the apparatus shown in FIG. 5 is a plan view of the portion of the apparatus shown in FIG. 4; FIG.
FIG. 6 is a sectional view showing the upper and lower parts of the molded body of the apparatus shown in FIG. 2. FIG. 7 is a plan view of only the upper part of the molded body shown in FIG. 6. FIG. 8 is a plan view of the lower part of the molded body shown in FIG. 6. FIG. 9 is a cross-sectional view similar to the view shown in FIG. 10 is a side cross-sectional view of the portion of the apparatus of FIG. 2 described in FIG. 9, with the section taken along line A--B--C--D in FIG. FIG. 11 is an elevational view showing only the covered portion of the nozzle device shown in FIGS. 9 and 10. FIG.
FIG. 12 is a plan view of a typical glass product obtained using the apparatus shown in FIGS. 9 and 10. 13 is a side cross-sectional view of a portion of a modified embodiment of the apparatus shown in FIG. 10; FIG. FIG. 14 is a partial elevation view similar to the view of FIG. 11 showing the modified ceramic coating shown in FIG. 13; FIG. 15 is a plan view showing the modified final product obtained using the embodiment shown in FIG. 13. Figure 16 shows the specific example shown in Figure 3.
FIG. 3 is a side elevational view of the top and bottom of the compact, with the cross section taken along the centerline of the device. FIG. 17 is a plan view of the apparatus shown in FIG. 16. 1st
FIG. 8 is a partial side sectional view taken at right angles to the view shown in FIG. 16. FIG. 19 is a side elevational view similar to the view shown in FIG. 16, but with the addition of a description of the ceramic coating not shown in FIG. FIG. 20 is a side elevational view of the embodiment shown in FIGS. 16 and 17, with the upper and lower parts of the molded body modified. 21 is a plan view of a modified portion of the apparatus shown in FIG. 20; FIG. 30: Molded body, 32: Upper molded body, 34: Lower molded body, 36: Reservoir, 40: Wall that widens at the end, 46: Converging wall, 45: Recess, 60:
Nozzle, 63: rib-like extension.

Claims (1)

[Scope of Claims] 1. An apparatus for continuously manufacturing sheet or tubular glass products having an upper part and a lower part, the upper part having a pair of divergent walls forming a working surface and disposed above the divergent walls. a storage device for storing a supply of molten glass mass provided therein, the glass mass overflowing from the storage device communicating with the top of each one of the diverging walls to flow down the wall and forming the molded body. A lower portion supports the upper portion and includes a lumen having an inwardly converging wall location, the upper opening of the lumen being larger than the widest dimension between the divergent walls of the upper portion to direct the glass mass flowing from the upper portion to the lower portion. A sheet or tubular glassware, characterized in that the lower end of the inner diverging wall of the lower part is adapted to terminate in an outlet according to the approximate shape and size of the glassware being formed. Equipment for continuous production. 2 the lower part has a recess forming a second storage device extending along the edge of the lumen in communication with the glass mass flowing from the upper diverging wall of the molded body; With a low edge on the inside,
2. The device according to claim 1, wherein the glass mass in the recess flows out onto a converging wall formed at the bottom of the molded body. 3. A lower part of the shaped body having a narrow, usually rectangular nozzle arrangement disposed within the lumen of the lower part of the shaped body, forming a flow path for the glass mass between the nozzle arrangement and the converging wall arrangement. Device according to claim 1, characterized in that it has an outer shell of a predetermined curved shape, such that it is accommodated between converging wall arrangements of. 4. The nozzle device and the outer shell have an elongated central portion with one side substantially parallel to the other side, the parallel sides joining at a curved end, and the outer shell cooperates with the diverging wall and the outlet at the bottom of the shaped body to direct the glass mass flowing through the shaped body into closed ends separated by an air gap extending between said closed ends. 4. Apparatus according to claim 3 for forming elongated double panels having: 5. The lower portions of the formed bodies each communicate with separate and separate feeders, the feeders being disposed between a pair of storage devices communicating with separate glass mass feed furnaces and disposed between the storage devices to a dividing wall directing the flow from the reservoirs to separate and spaced portions of said diverging wall, said converging wall surface disposed at the bottom of the shaped body containing a separate and spaced glass mass flowing from each reservoir; 2. Apparatus according to claim 1, characterized in that it has a shape which keeps these separate streams separated from each other until they each reach a predetermined position on said outlet. 6. The outer shell of the nozzle device has a rib-like extension formed at its end, the extension engaging in a predetermined position of the converging wall of the lower part of the formation. An apparatus according to claim 4. 7. Ribbed extensions of the outer shell extend downwardly at least to the outlet opening and are shaped to prevent separate glass masses flowing down each of the diverging walls of the lower part of the compact from joining together. 7. The device according to claim 6, characterized in that it is constructed as follows.