| 摘要 |
<p>The fixed surround frame (1) of the window carries a bottom locating element (13) slidably adjustable in relation to a bottom locking element (11) and affording a first vertical stop (15) positioned to engage a relative catch (11a), whilst the sash (2) carries a top locating element (17) embodied in two distinct component parts (17a, 17b), the first of which a base affording a pair of mutually opposed second vertical stops (19) at one end, positioned to engage the catch (10a) of a top stay rod (12), and a seating (20) at the other end; the second component (17b) affords a pair of mutually opposed third stops (21) positioned likewise to engage the catch (10a) and is insertable to an exact fit in the first in two different positions, 180 DEG apart, in such a manner as to alter the distance between the two pairs of stops (19, 21) and thus select a different sequence of interaction between the stops and the catch (10a). <IMAGE></p> |
