| Patent claims 1 Insulating pane containing a Venetian blind where the pane consists of at least two rectangular congruous panes permanently fixed to each other with frame-parts in the four corners of the panes where, in the space between two panes (1, 2) there is a Venetian blind which can be pulled up and down and which can be slanted and is hanging from the uppermost horizontal frame part (3), characterized by the fact that there are cords (11) or strings for pulling the Venetian blind up and down which can be rolled up and put on a roll (12) which is placed between the two panes and mounted in bearings in a direction where its axle is at right angles to the extension of the pane surfaces, that in the pane (2) which is nearest the apartment there is a hole (9) at the top through which, when the mounting of the pane is finished, there is an axle (23) for rotation of the roll (12), that in the pane which is nearest the apartment there is a hole (8) through which, when the mounting of the pane is finished, there is an axle (22) for the turning of an axle (16) for slanting of the Venetian blind and that outside the holes (8,9) on the inner pane, when the mounting of the pane is finished, there is against this pane a cover (20) hermetically mounted, which contains axles (22, 23) which grip the axle (19) inside the pane and the roll (12) for slanting and pulling up the Venetian blind by rotating each axle (22, 23) which can be rotated by axles which can be rotated in packings (36) in the tight cover (20) or through a magnet (27) immediately inside the tight cover (20) and a magnet (29) immediately inside the tight cover and just outside the inner magnet (27). 2 Insulating pane according to Patent Claim 1, characterized by the fact that there is no part for manoeuvring of the Venetian blind outside the outer side of the inner pane before the cover is fastened. 3 Insulating pane according to any earlier patent claim, characterized by the fact that the cover has out-turned flanges (21) with which it can be glued to the inner pane (2) 4 Insulating pane according to any earlier patent claim, characterized by the fact that immediately inside the cover (20) there is an inner magnet (27) put on a firm axle (26) for pulling the Venetian blind up and down and that immediately outside the cover (20) just outside the inner magnet there is an outer magnet (27) tied to a cord wheel or a pearl-chain wheel (34). Insulating pane according to any earlier patent claim, characterized by the fact that in the cover (20) there is a gear transmission (24, 28) between the axle (23) which can rotate the roll (12) directly and the firm axle (26) on which there is a cord wheel or a pearl-chain wheel (34). Insulating pane according to any earlier patent claim, characterized by the fact that in the cover (20) there is an axle in bearings for pulling the Venetian blind up and down. This axle goes through a packing (36) through the cover (20). On the axle outside the cover there is a cord wheel or a pearl-chain wheel (34) Procedure for mounting an insulating pane according to Patent Claim 1, characterized by the fact that first a pane (1) is fastened to the frame parts(3,4) where the uppermost frame part (3) has a Venetian blind fastened and after that the second pane (2) is fastened on the frame parts and that after that the cover (20) is mounted and glued against the inside of the inner pane so that the axle (23) for pulling the Venetian blind up and down and the axle (22) for slanting the Venetian blind comes through holes (9,8) in the inner pane and grips the corresponding parts (12, 19) inside this pane. |
In new and renovated windows insulating panes with two or three panes have been used since long. For the insulating panes which are now manufactured a type certificate is required, showing that theoretically they will prevent moisture entry for a hundred years.
To prevent the inlet of light more or less through a window either blinds or Venetian blinds are used since long. Placing a blind or a Venetian blind inside the innermost pane of a window involves the disadvantage that a whole or almost whole pulling down is most often prevented by flower pots and other things which usually stand on a windowsill close to the window. It is also a disadvantage that a blind or a Venetian blind placed like that in course of time becomes dusty. Compared to a blind, a Venetian blind has the advantage that, by the slanting of its slats, solar radiation for instance can be entirely prevented without the permeability of light being much reduced.
One purpose of the invention is to make it possible to, with in the main existing equipment and with only a little work, be able to prepare an insulating pane containing a Venetian blind. This can be done among other things by first inserting the Venetian blind between two panes so that nothing comes outside a pane surface. On a later occasion a cover with a control equipment can quickly be attached to the inside of the insulating pane. If the control of the Venetian blind is done with magnets, the insulating pane including the cover can be tight independent of time. If there is a shaft packing it is uncertain how long the packing will keep quite tight.
Insulating panes according to the invention can in most cases be installed in existing window frames without changing them. With drawn and vertical slats, a two-glazed insulating pane can have a thermal insulation which is close to that of a triple-glazed insulating pane. It is obvious that a pane according to the invention can be installed in window frames made of optional material and also in windows that can be opened.
The invention has the special characteristics described in the patent claims.
The invention will be explained more in detail with the help of figures.
Figure 1 shows a part of an insulating pane containing a Venetian blind.
Figure 2 shows the pane according to Figure 1 with a mounted cover in section
A -A.
Figure 3 shows the pane according to Figure 1 with a mounted cover in section B
- B.
Figure 4 shows the pane according to Figure 1 with a mounted cover seen from the inside of an apartment.
Figure 5 shows a variant of Figure 2.
Figure 6 shows a variant of Figure 3.
In the figures, the corresponding parts are represented by the same figure. With 1 and 2 the outer and inner panes of a two-glazed insulating pane are denoted and with 3 an upper part of a frame and with 4 a side part of a frame. The difference to frame parts in traditional insulating panes is that the frame parts here are considerably broader. In a traditional way they may be hollow and contain a moist-absorbing substance. With 5 a rubber packing between the innermost pane and a wooden frame 6 is denoted and with 7 a strip of wood is denoted, pressing and holding the insulating pane against the packing and the wooden frame. With 8 and 9 two round holes in the inner pane 2 are denoted. A metal strip 10 is fastened to the upper frame part 3 and carries a Venetian blind. To pull up the Venetian blind, depending of the breadth of the window, two to four cords, one of which is denoted 11 and is fastened to a roll carried at right angles against a pane surface 12. In the roll there is an axial hole in the centre whose cross- section is rectangular. The uppermost slats of the Venetian blind are denoted with 13. Outside these there are cords 14 in a well-known way to keep the slats at a distance from each other and to be able to slant them. The upper ends of the cords are in a traditional way fastened to little rolls 15, which are fasten to a long turnable horizontal axle 16 in a well-known way. For the turning of the axle 16 there is in the end of the axle a conical gear with the gear wheels 17 and 18. The gear wheel 18 is fastened to a thick axle 19 in which there is an axial centre hole whose cross-section furthest in is rectangular.
In Figures 2-6 you can see a metal cover 20 with protruding flanges 21. The cover is hermetically glued on the inner pane 2 with glue on the flanges. The cover according to Figures 2 and 3 shall be of non-magnetic material, for instance brass. 22 and 23 denote axles. One outer end has a rectangular form. The intention is to make it grip the axle 19 and the roll 12. On the axle 22 and the axle 23 a cylindrical gear-wheel 24 is fastened. Two other axles, 25 and 26, are hermetically soldered on the cover. On the inside of the cover on the axles 25 and 26 pivoted round magnets 27 are each firmly connected with a cylindrical gear-wheel 28, which cooperates with the gear-wheels 24. Immediately outside the cover there is an outer magnet 29 just as the inner magnet 27 pivoted on the axles 25 and 26. Firmly united with this outer magnet there is in Figure 2 a worm-wheel 30 and pivoted by a screw (cannot be seen in the figure) put on an axle 31. The axle ends with a loop 32 into which a rod can be connected for turning of the loop and the screw and the worm-wheel 30. Magnetic action makes the inner magnet follow the outer magnet when it is rotated. 33 denotes an outer cover of for instance plastic in which bearings for the axle 31 may be found. In Figure 3 the axle 23, when the cover is put on the inner pane, grips the centre hole in the roll 12. The outer magnet has a pearl-chain wheel 34 fastened on its outer side. It is rotated by a pearl-chain 35 in a well-known way. The cover is designed with regard to the pearl-chain. There must be a device (not shown) for the outer magnet to be braked so that it cannot rotate because of the weight of the Venetian blind.
hi Figures 5 and 6 the magnets have been exchanged for packings 36 of for instance Teflon whose long-term is somewhat uncertain. In Figure 6 the roll 12 must be prevented by a braking device (not shown) from rotating because of the weight of the Venetian blind. In Figures 5 and 6 it is shown that the insulating pane contains a third pane 37. Outside this there is a metal strip 38 which keeps and presses the insulating pane against the packing 5 and the wooden frame.
Some window manufacturers have a production of insulating panes of their own. Independent of where the insulating pane is manufactured it is important that it can take place rationally, that is to say largely automatically and in existing equipment. At the manufacture of insulating panes according to the invention this can take place without large divergences from the manufacture of traditional insulating panes. The difference is chiefly that the frame parts between the two innermost panes are broader, that a Venetian blind is fastened to the upper frame part and that there is a hole in the inner pane for a device for manoeuvering the Venetian blind. Here it is important that no part of the fastened Venetian blind is outside the inside of the inner pane. When fastening the inner pane on the frame parts a tape can be put on the outside of the inner pane so that it covers the hole or the holes made in the inner pane. Argon or another gas can then, in a well- known way, be led between the panes. In future, and that may be much later, the tape can be taken away and the cover, with glue on its flanges, be put at right angles to the inner pane so that the axles 22 and 23 grip the axle 19 and the roll 12. A small tool with suction cups can be put on the cover and kept on the inside of the inner pane so that the cover becomes fixed in its place while the glue hardens. The manufacturer of insulating panes can receive the Venetian blind including the parts which are to be fastened in the upper frame and the cover with its belonging parts from the outside. The extra work of the manufacturer of insulating panes can thus be small.
It goes without saying that the designs described here are only examples and that the invention is only limited by the patent claims.