Abstract: Signal display element for the display of more than two informations by electromagnetically excited magnetic tilting plates, wherein at least two tilting plates in stable condition are arranged and supported in bearings on a baseplate for covering the surfaces of the baseplate carrying the information, the single tilting plates are supported in bearings preferably on two places and displaced in relation to each other, the distance between the common geometric axis of revolution of the tilting plates and the baseplate equals to, or is larger than the half of the total thickness of the tilting plates bearing up against one another.

Abstract: An iron core for the magnetic induction of a visual information displaying element with a magnetic flip plate, wherein the display element comprises one or more permanent-magnetic flip plates magnetized perpendicular to their face and suitable for the direct or indirect display of the information. It is provided with one or more exciting coils with an iron core with a repolarizable remanent induction adapted to produce a magnetic field and with a coercive force less than the coercive force of the permanent magnet in the flip plate. On the end of the core facing the display element a profiled body is closely fitted, which is made of a magnetic material having a higher initial permeability than the initial permeability of the iron core and which is provided with a profiled cut-out corresponding to the cross-section of the end of the iron core.