Abstract: A lowerable window assembly for automobiles is provided which employs a pulley arrangement connected to an actuator assembly which operates to both lift and lower the window and to rotatively drive the actuator when the window is fully raised to impart lateral movement to the lower edge of the window which the actuator assembly is attached.

Abstract: A window actuator assembly for a lowerable automobile window includes a molded plastic hub having short internal helical drive lugs drivingly engageable with helical grooves molded into external surfaces of a drive spindle to effect lateral outward movement of the lower edge of the window outwardly as it approaches its fully raised position, moved upwardly with the actuator assembly by a window regulator drive which is configured to rotate the spindle as it approaches the raised position. A hinged connection is provided between the hub and the window.