To open the window, crashed from a random gust of wind, usually set PA frame hooks or restrictive straps with a number of slots. However, the “hobbled” so the Transom is trying to “free” is going, especially notice it at night. Here are two ways to “calm” her. The easiest — replace the bar of a curved springy wire: it will soften, damping jerks open the sash window. The second option is the wing clip as shown in the figure, will allow you to set the frame in any place, will not give her to swing.