| Patent Claims 1 Window containing an insulating pane (4) of the kind which has at least two rectangular congruous panes (5,6) not removably fixed to each other characterized by the fact that inside the insulating pane and at a distance from it an inner pane (8) is placed on whose upper edge (9) is fixed an upper rail (10) in which the horizontal axle (21) of a Venetian blind for slanting the blind is carried, that the device for turning the above-mentioned axle goes through the outside of the upper rail, that strings (27) for pulling up or pulling down the blind or device for handling these strings goes through the outside of the upper rail, that there are rails (11, 12) between the inner pane and the insulating pane along the three remaining edges of the inner pane which are removably pressed against the insulating pane and that the inner pane and the rails (10, 11, 12) are fixed to the window frame so that air from the inside cannot really come into the space (15) between the insulating pane and the inner pane while air from the outside can come into the above- mentioned space. 2 Window according to Claim 1, characterized by the fact that the inner pane at the top is shorter than the insulating pane. 3 Window according to Claim 1, characterized by the fact that there is an air filter (18, 32) between the outdoor air and the space (15) between the insulating pane and the inner pane (8). 4 Window according to any earlier claim, characterized by the fact that the upper rail (10) is removably mounted from above on the upper edge (9) of the pane. 5 Window according to any earlier claim, characterized by the fact that the upper rail (10) is permanently fixed to the outside of the inner pane. 6 Window according to any earlier claim, characterized by the fact that the upper rail has an inside parallel to its outside, which can be pressed against the insulating pane. 7 Window according to any earlier claim, characterized by the fact that the window frame is made so that the insulating pane (4) and the inner pane (8) can be put into the window frame from its inside. Window according to any earlier claim, characterized by the fact that the window frame is made so that the insulating pane (4) and the inner pane (8) can be put into the window frame from its outside. Window according to any earlier claim, characterized by the fact that the inner pane (8) including rails (10, 11, 12) fixed on the pane has the same outside measurements as the insulating pane. Window according to any earlier claim, characterized by the fact that the outer ends of the slats go in between the U bar of a side rail and a strip (28) fixed to the side edge of the inner pane. |
In new and renovated windows insulating panes with two or three glasses have feeT usS since long. For the insulating panes which are now made, a type ce'ficf is required'showing that the insulating pane will theoretxcally prevent harmful penetration of damp for a hundred years.
To orevent inlet of light more or less through a window, since long blinds or
dtadvaTage that a so placed blind or Venetian blind in course of tune becomes dusty.
The insulating pane mentioned in the Swedish patent 529 508 means advantages ΪIS β - fr o m the fact that it is difficult t o be £ e credibly the density of the pane against penetration of damp for a long t i me and S outer pane ha! been broken, the whole set with three panes must be changed.
Com p ared to a blind, a Venetian blind has the advantage that, by the slanting of £ solar radiation for instance can be entirely prevented w i thout decreasmg the permeability of light very much.
By the present invention you can put in an insulating pane as well as an enclosed Venetian blind in simple window frames and this with no risk of condensat i on on the inside of the insulating pane.
RECORD COPY-TRANSLATION (Rule 12,4) When water is condensed on a glass surface you cannot see clearly through the glass. It is therefore decisive for the value of the window that there is not any condensation on any of the pane surfaces.
At the use of insulating panes the space between the panes is entirely free from water why condensation cannot be formed there.
In cold weather the outermost pane in a triple-glazed window becomes cold. The innermost pane keeps almost room temperature and the medium pane gets a temperature between those of the two other panes.
If the space between a double-glazed insulating pane and an inner pane has connection with the air in the room which normally has an atmospheric humidity of 40 - 80 per cent, the steam of this air can be condensed on the side of the insulating pane turned towards the inner pane, at which the transparency is deteriorated.
By letting the space between the insulating pane and the glass get access to the outdoor air which in cold weather contains only a little steam and the temperature of the middle pane is higher than the dewpoint of the air between the insulating pane and the pane there is no condensation on the surface of the insulating pane turned towards the inner pane.
By having the Venetian blind between the insulating pane and the pane you gain that it is not prevented by flowerpots and other things often standing on a windowsill. Nor can the Venetian blind become dusty from the apartment.
The window frames shown in the figures are of wood. They can of course be made of other material, for instance of polyvinyl chloride.
The window frames, as they are shown in the figures are, if the windows cannot be opened, intended to be put directly in window frames. If the windows are to be opened they ought to be put in window frames designed in any of many well- known ways.
For the invention it is important that the distance between the outer panes does not increase more than 15 millimetres compared to existing triple-glazed insulating windows at which existing window-frames in many cases can be used without big changes. The invention has the special characteristics which are evident from the patent claims.
The invention will be explained in detail with the help of figures.
Figure 1 shows a window vertically where the panes are inserted into the window frame from the side.
Figure 2 shows a window frame according to Figure 1 horizontally.
Figure 3 shows the cross-section of a window where the panes are inserted into the frame from the outside.
Figure 4 shows the horizontal section of a window frame according to Figure 3.
In the figures common parts are denoted with the same numbers. In the figures the right side of the window is turned towards the room. The upper part of a window frame is denoted with 1, its lower part with 2 and its side parts with 3. Generally a double-glazed insulating pane consisting of one outer pane 5 and one inner pane 6 is denoted with 4. The two panes are not removably fixed to each other with a sealing compound and glue on a metal tube 7 in a well-known way. The panes are rectangular and congruous. With 8 is denoted an inner pane which is somewhat shorter at the top than the insulating pane. The upper edge of the inner pane is denoted with 9. An upper rail is denoted with 10, two side rails are denoted with 11 and a lower rail is denoted with 12. The rails are U-shaped and on the inside one of their legs is glued with a line of adhesive 13 against the outer edges of the inner pane. The other legs of the rails are, when the window is mounted, pressed against the insulating pane with a gasket material 14 between them. In the space 15 between the insulating pane and the inner pane 8 there is a blind whose two upper slats are denoted with 16. The inner pane 8 is pressed by the rails 10, 11 and 12 and by strips 17 screwed on the window frame against the insulating pane 4, which in its turn is pressed against a gasket 18 and further against the window frame. The gasket 18 can on part of its length at the upper part 1 and lower part 2 let through air. With 19 are denoted strings which encircle slats 16 of which the upper two have been drawn in the figure. The strings, in a well-known way, are fastened on one little cylinder 20 each which can be rotated on a long axle 21 carried in the upper rail 10. With 22 is denoted one inner and with 23 one outer gear drive for rotating the axle 21. Between the two gear drives there is a short axle 24 which is placed above the upper edge 9 of the inner pane. From the outer gear drive there goes a short vertical axle 25 which at its lowest end has a loop 26. By turning this with a rod the blind can be slanted in a well-known way. With 27 is denoted a string for drawing the blind up and down. This and at least one more string are used together at drawing the blind up and down. A well-known lock device (not shown) is used to lock the strings and with that the blind in the wished position. The strings go out above the upper edge 9 of the inner pane, which however is not shown in the figures.
Instead of the strings 27 going direct out through the outside of the upper rail they can be wound on to a first roll inside the outside of the upper rail where the axle of the roll is perpendicular to the outside of the rail. On the same axle and inside the rail there can be a second roll from which another string is wound at the same time as the strings for drawing the blind up and down are wound onto the first roll. This latter string can go through the outside of the upper rail. By this is gained that only one string goes through the upper rail at which the sealing becomes better. As an alternative it can be arranged so that the other roll is instead outside the upper rail so that only one axle sealing is needed. Roll here is the same as rope wheel or pearl-chain wheel. By rotating this roll the blind can be drawn up. This second roll can be rotated with a string or a pearl-chain. With string is meant the same as rope.
With 28 is shown a thin strip which is glued to the inner side edges of the inner pane and is intended to create a distance between the slats and the inner pane. At their ends the slats enter between the legs of the side rails and these strips 28. With 29 are denoted a couple of distance pieces to keep the insulating pane and the inner pane at a distance from the lower part 2 of the window frame. With 30 are denoted air holes in the upper rail and with 31 are denoted air holes in the lower rail.
These holes are there to let the outside air enter into the space 15. The air can of course, instead of as shown in the figures, pass in the opposite direction. Even if it takes a long time, there will be a balance between the air in the space and the outside air. The above-mentioned air filters can be replaced by more pervious fine-meshed nets.
In the figures 3 and 4, 32 denotes air pervious foam plastic. With 33 is denoted a lower holding strip with air holes 34. With 35 is denoted an upper holding strip with air holes 36. To the upper rail 10 is welded an inner plate 37. The rail 10 is put on the upper edge 9 of the inner pane from above so that the pane comes close to the plate 37 and one of the U-legs of the rail. A couple of pins 38 fastened to the plate 37 stop the rail 10 from being pressed too far down on the edge area 9 of the inner pane. On the window according to figures 3 and 4 the rails 11 and 12 have been glued to the inner pane with very thin lines of adhesive not marked in these figures. Between the rails 10, 11 and 12 and the window frame there are sealing strips 41. With 40 is denoted a distance block on which the insulating pane rests.
It is not necessary that the inner pane is shorter than the insulating pane at its upper end, particularly if the insulating pane and the inner pane are inserted into the window frame from its inside.
The methods of manufacturing shown in the figures are of course only examples. The invention can therefore be varied with the frame of the patent claims.