| 摘要 |
The invention relates to a device making it possible to protect all the openings requiring it, without losing the advantages thereof. It consists of a grid 3, of crosspieces 6, in which slide the bolts 11 manoeuvred by the buttons 7. A "two point" safety lock 4 accommodated in the upright 21, the rods 8, linked to the espagnolette bolt 18, by the screws and a left leaf upright, on the crosspieces 6 are welded a lug 19 and a twice-bent hinge. When closing the grid 3, the lugs 19 enter the striking plates embedded in the panels, the bolts 11 are pushed, the notches receive the rods 8 and the upper and lower striking plates receive the espagnolette bolt 18. <IMAGE>
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