Device for opening and closing a window, a door, or the like

In a device for opening and closing a window, a door, or the like having a stationary frame and having a casement moveable between a closed position and an open position, which is connected to the frame by at least one hinge part, having a toothed rack, longitudinally displaceable by a rotary operated actuating means which is connected to the casement by a hinge rod and wherein the hinge rod transfers longitudinal displacement of the toothed rack into movement of the casement, and having at least one pair of closing elements between the casement and the frame which is composed of a moveable and a stationary closing element, and acts to ensure said closed position of the casement, the moveable closing element of which can be changed over, by a closing rod, between a latched position holding the casement against the frame and an unlatched position releasing the casement, the improvement comprising:

• that said toothed rack is a first toothed rack cooperating with the casement, and that a second toothed rack is arranged in the frame, which is connected to the closing rod for the moveable closing element located in the frame, both toothed racks being longitudinally capable of being displaceable by the same actuating means, only one of said two toothed racks being ordinarily coupled to the actuating means, while the other is uncoupled and stationary, and wherein the ordinarily coupled toothed rack uncouples itself automatically from the actuating means after a predetermined distance of travel and the final phase of its longitudinal displacement serves to couple the other toothed rack to the actuating means.