Abstract: A changeable exhibitor comprising a video or script tape movable on vertical guide rollers in a closed loop, a weighted roller freely movable along a substantially horizontal roller path within the interior space of said loop, a disc on one side of the roller, and projections on the side of the tape facing the roller path, said disc and projections cooperating to advance the tape in response to movement of the weighted roller in one direction along the roller path.

Abstract: A movable device supporting a movable figure having movable arms, comprising a longitudinal path formed by a substantially horizontal upper surface of a portion of the device in the operative position of the device, a roller freely movable along the path under the influence of acceleration and deceleration of said device, said path having means at each end for limiting the movement of said roller, and mechanical linkage connecting said roller and movable members, the path having a slightly upwardly convex curvature whereby the ends are disposed at a slightly lower level than the center portion in the operative position of the device.