FIELD: building units, particularly that for window aperture closing.
SUBSTANCE: device for closing aperture provided with sash and casement comprises at least one opening device acting upon casement corners. Casement has corresponding furniture in casement corners including holding bolt extending out of furniture in upward or downward direction. Each holding bolt is secured by one guiding member installed in corner areas between sash and casement to provide one-way casement opening. Furniture and casement may perform plane-parallel motion from sash and in reverse direction along guiding members. Window wing may be opened to specified extent. When window wing is closed furniture is concealed as guiding members and opening device is fully closed with sash or casement.
EFFECT: improved breaking-in resistance and enhanced appearance.
10 cl, 3 dwg
