Abstract: A sign (1) for mounting on an underlayer (P) and for consecutive, repeated presentation of a series of images. The sign (1) comprises at least two elongated display members (4). Each display member (4) has a plurality of sides for displaying images. The sign also comprises a respective drive member (6) for rotating each display member (4) and a frame portion for supporting the display members (4). The frame portion comprises at least one first element (7) for mounting to the underlayer (P) and at least two second elements (8) that are connectable to the first element (7). A display member (4) is rotatably supported on a first side of each second element (8). The drive member (6) for each display member (4) is mounted on a second side of each second element (8). The second side of each second element (8) is opposite the first side of each second element (8).

Abstract: In a device for operating display members (2) at signs for consecutive, repeated presentation of series of images, the members (2) are operated by a driving gear wheel (9) on a drive shaft (6) through a driven gear wheel (10) for each member (2). The drive shaft (6) has a lock (15) cooperating with a member (16) being non-rotatably connected with the driven gear wheel (10) for setting in a locking position for blocking the driven gear wheel (10) against rotation when no engagement between the gear wheels (9, 10) is present, and leaving its locking position for permitting rotation of the driven gear wheel (10) before engagement once again is present.