| 摘要 |
The invention relates to so-called "landing" entrance doors of the burglarproof type, the constituent elements of which are made of component parts ready to be assembled mechanically and without special tools. These doors are intended to replace the old entrance doors to flats, without having to change the original door frames if their condition does not warrant it. It comprises one or two leaves composed of two steel sheets 1 and 2, between which slide two metal sections 20 and 30, enabling the leaf or the leaves to be adjusted to the dimensions of the original door frame. A flat iron 42, screwed in the rabbet or on the so-called "fixed" leaf, in which horizontally adjustable strike plates are arranged, makes it possible to receive the bolts 34, 35 and 36 of the locking system. Another model of flat iron 47, identical to 42, makes it possible to position, horizontally and vertically, movable strike plates 48 thus receiving the bolts of other models of locking systems. <IMAGE>
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