Abstract: A partition wall, upwardly movable into storage position and downwardly movable into vertical, down position. The wall comprises a plurality of similar trains of elongated members. The members of each train are arranged to form a single pantograph forming longitudinally aligned rows of diamonds. The trains are spaced laterally to form a wall plane and oriented so that the diamonds of the pantographs operate in a plane at a 90° angle to that wall plane. A plurality of panels are provided, each panel being secured to a pair of corresponding members in adjacent trains. The panels are secured to corresponding pairs of opposed sides of the diamonds. Means are provided to raise and lower the trains at a similar rate. The pantographs are contracted when the wall is in a storage position and the elongated when the wall is in down position. The panels form a vertical wall when the pantographs are elongated in down position.

Abstract: A rigid wall partition system which is vertically upwardly movable into storage position and vertically downwardly movable to form a continuous wall. The system comprises a plurality of panels secured to members which in turn are pivotally secured to spaced trains of single pantographs, contraction of the pantograph causing the panels to fold, in accordion fashion and expansion of the pantographs causing the panels to move to vertical, wall-forming position.