Electric game apparatus with rotating marker

A game apparatus having a frame rotatably mounting a symbol substrate and a marker capable of relative motion by means of an electric motor, with a plurality of teeth fixed with respect to the axis of said symbol substrate about which it is coaxially mounted and with a spatial tooth frequency corresponding to that between the symbols on the symbol substrate, further including an electromagnet means allowing the relative motion between the symbol substrate and the marker and interrupting this motion as a function of a random generator output, the marker and the symbol substrate being mutually lockable in one of several rotational angular positions predetermined by the teeth,

• characterized in that the electromagnet means comprises the poles of two annual electromagnets mounted approximately concentrically to each other and coaxially with the axis of the symbol substrate, one electromagnet being located adjacent the teeth and the other electromagnet being located radially therefrom, the marker being a freely moving magnetizable element positioned adjacent but spaced from the poles of the electromagnets, a pair of non-magnetizable rings each mounted between the poles of the electromagnets and the marker and spaced from the electromagnets, one ring being fastened to the symbol sybstrate, the rings being so shaped that the marker rests only against that ring which is next to the actuated electromagnet and means for selectively energizing said electromagnets whereby when the other electromagnet is energized the marker is held against the ring not attached to the symbol substrate and spaced from the teeth of the symbol substrate, and when the one electromagnet is energized, the marker is held against the ring fastened to the symbol substrate and engages in the space between a pair of teeth.