Abstract: A window winding apparatus for a window of a vehicle such as an automobile or the like wherein the window is slidable generally upwardly-downwardly in an opening or closing action and is divided approximately vertically into a viewing pane and a relatively smaller ventilating pane and the two panes are actuated by a common drive effecting, relative to movement of the viewing pane, advance motion of the ventilating pane during opening and delayed motion thereof during closing, the apparatus including an actuating device having a slotted guide tube with a flexible threaded cable slidably guided in the tube in a tension and compression transmitting relationship, with the cable being positively connected through the guide tube slot to the larger viewing pane in an arrangement whereby lost motion retains the viewing pane in its closed position during the initial sliding opening action of the ventilating pane, and means adapted to automatically couple the ventilating pane to the drive cable only for and during its