Abstract: Device for raising and lowering a modular aircraft window having an interpane, outerpane, frame assembly securing the inner and outer pane, collapsible shade with a fixed and movable end, the device comprising a block and tackle having a movable pulley and more than one fixed pulley, the movable pulley and fixed pulleys connected by a cable fixed at one end and attached at second end to the moving end of the collapsible shade. Moving the movable pulley effects a movement, through the cable, through the moving end of the collapsible shade, and creates a mechanical advantage multiplying the distance moved by the lever.

Abstract: A reversing screw (102) for a modular self-contained window insert (10), which reversing screw (102) allows movement of the window shade (16) between a full-opened and full-closed position, when the throw of the reversing screw (102) is less than the distance between the opened and closed position of the window shade (16).