| 摘要 |
<p>The turning window wing is mounted in the pane surface of a swinging window ring, so as to be able to turn vertically. A pref. narrower turning window wing is fitted to one of the lateral vertical frame shaped-section units of the swinging window ring, and a shaped-section post is provided as a stop, between the lower and upper cross-mouldings of the latter. Two such shaped-section posts may be inserted into the pane surface of the swinging window wing, if necessary, to enable the turning window wing to be mounted in the centre of the window assembly. The turning window is provided for the improvement of ventilation, and can be opened only when the swinging window ring is in a vertical position.</p> |
