A GLAZING UNIT WITH STEEL REINFORCEMENT

Abstract: A glazing unit (1) with steel reinforcement with use being made of at least two layers of glass (2, 3), which are placed at regular intervals in a metal profile (4) running along the edges. In the space between the layers of glass (2, 3) a lattice (9) of a stroke and cut firm material, preferably hardened steel, is placed. The lattice (9) is placed in a U-shaped groove (10), which is fastened to the metal profile (4). The lattice (9) affords effective protection against burglary and wanton destruction of property.

Description: A GLAZING UNIT WITH STEEL REINFORCEMENT TECHNICAL FIELD The invention relates to a glazing unit with steel reinforcement with use being made of at least two layers of glass placed at regular intervals in a metal profile running along the edges. BACKGROUND ART Said kind of glazing units have been widely spread because of the good heat and sound insulating quali¬ ties. Furthermore, the glazing units with steel rein- forcement can to some extent resist strokes and bumps in case of wanton destruction of property and burglary, but they cannot resist heavy missiles or repeated strokes of heavy hammers or similar tools. For protection against burglary and for protection against wanton destruction of property it is therefore necessary to use steel shutters and/or steel lattices, which are placed either before or behind the glazing unit. However, said arrangements are unpractical and difficult to open and shut and to some extent it will not be possible to make use of them in the period in which the rooms are being used. DISCLOSURE OF THE INVENTION It is the purpose of the invention to indicate a glaz¬ ing unit, which affords effective protection against burglary and the throwing in of objects or liquids into the room behind the glazing unit. Said purpose is achieved by a glazing unit with steel reinforcement of the kind mentioned by way of introduc- tion and is characterized in that a lattice of stroke and cut firm material, preferably hardened steel, is placed in at least one of the spaces between the layers of glass. By this simple measure the desired protection against the throwing in of objects and liquids in case of wanton destruction of property is achieved, as it will not be possible to break more than the first window glass. In addition thereto,, it will not be possible by burglary to effect an entrance through the lattice even though usually effective tools like cutting nippers, hacksaws etc. are used. By a favorite embodiment of a glazing unit according to the invention the lattice is placed in a mainly U- shaped groove, which with the flat bottom part is made to fit tightly against the metal profile between the window glasses by the edges thereof. By said form the guarantee is obtained that the outer area of the lattice is protected against tools, which will not be able force their way into the bottom of the U-shaped groove. At the same time a conventional metal profile can be used, which does not need to be made to receive the ends of the lattice. The metal profile and the U-shaped groove can be assembled in a suitable way, for example by glueing or soldering. According to the invention the lattice can be shaped by a bilateral stretching of a partly slotted steel plate making parallellogram-shaped loops. Said embodiment ensures that the lattice is very stable without weak assembling points, and at the same time the lattice is simple to manufacture. Combined with an oblique placing of the connecting rods of the lattice the parallellogram-shaped loops make attractive light effects possible. BRIEF DESCRIPTION OF THE DRAWINGS Below the invention is further explained with reference to the drawings, on which Fig. 1 schematically and in a vertical section shows a glazing unit made in accordance with the inven¬ tion, Fig. 2 schematically shows a section of a glazing unit according to the invention. DESCRIPTION OF THE PREFERRED EMBODIMENT In Fig. 1 a glazing unit made in accordance with the invention is shown, which is collectively indicated with the reference number 1. The glazing unit consists of two layers of glass 2, 3, which in a known way are reinforced along the edges with a steel reinforcement profile 4. The glazing unit is placed in a in itself known way in a window frame 5 by means of space mould¬ ings 6, 7. Furthermore, a conventional glass moulding 8 is placed. Between the two window gl asses 2, 3 the lattice 9 cha¬ racteristic of the invention is p l aced, which by the embodiment shown in Fig. 1 is placed in a U-shaped groove 10 running along the edge of the lattice. In Fig. 2 a corner of a glazing unit made in accordance with the invention is shown. The lattice 9, which is built up over parallellogram-shaped loops 11, is placed in the groove 10 and the lattice is thereby protected against tools and the like. The groove 10 is placed against the conventional metal profile 4 and connected thereto in a suitable way, for example by the suggested glue joint 12.

Claims: C A I M S 1. A glazing unit (1) with steel reinforcement with use being made of at least two layers of glass (2, 3) placed at regular intervals in a metal profile (4) run¬ ning along the edges, c h a r a c t e r i z e d in that a lattice (9) of a stroke and cut firm material, preferably of hardened steel, is placed in at least one of the spaces between the layers of glass. 2. A glazing unit according to claim 1, c h a¬ r a c t e r i z e d in that the lattice (9) is placed in a mainly U-shaped groove (10), which with the flat bottom part is made to fit tightly against the metal profile (4) between the window glasses (2, 3) by the edges thereof. 3. A glazing unit according to claim 1, c h a- t e r i z e d in that the lattice (9) is shaped by a bilateral stretching of a partly slotted steel plate making parallellogram-shaped loops (11).

Inventors: BRASK ERIK, BRASK, ERIK
Applicants: BRASK ERIK, BRASK, ERIK
Application year: 1987
Main classification: E06B9
IPC codes: E06B3, E06B5, E06B7, E06B9