Abstract: A bed assembly including a plurality of mattress support members that can be moved to an articulated position with respect to a straight line interconnecting the centers of the members, and which also can be moved to an angled position to roll a person on the bed from one side to the other as desired, which is especially useful for hospital beds. An actuator for moving the patient include first and second levers, a rotatable shaft, and a cable interconnecting the shaft and the levers. Actuating means for moving the support members to the articulated position can be of a conventional type, the lever, cable, and shaft actuating means not interferring with the operation thereof.