Display device for projecting scenes, win signals, and proportion of win signals

Claim 1

A display device for displaying one of a plurality of scenes, and comprising; a slide projector for containing representations of said plurality of scenes on slides mounted in said slide projector, a display area comprising said projector screen, means for projecting one of said slides at a time on said projector screen, and, means for advancing said slides into the project position on receipt of a scene advancing signal from a signal means; means associated with preselected scenes for activating a win signal; means associated with preselected ones of said preselected scenes for activating a proportion of win signal; display means for displaying a win signal and a plurality of further display means for displaying respective proportions of win signals; wherein, each slide comprises a plurality of markings on an end thereof; a conductive bar on each slide connecting all of said markings, said conductive bar being connected to ground potential; a plurality of spring contacts mounted in said slide projector such that each spring contact is adjacent a respective marking when the slide is in the project position: each of said contacts being connected to one end of a respective relay, the other end of the relay being connected to a source of potential; and conductive clips for mounting on selective ones of said markings of said preselected slides; said spring contacts being adapted to contact the clip on its respective marking when the slide, carrying the marking, is in its project position; whereby, when a contact is grounded through a conductive clip by said conductive bar, its respective relay will be energized; the movable contacts of each said relay being in a conductive path between a source of potential and an associated win or respective proportion of win display means; whereby, when a respective relay is energized, power will be supplied to its associated display means to energize said associated display means; and further comprising: conductive means connecting said signal means with said means for advancing; switch means inserted in said conductive means; timer means connected to said switch means and adapted to open said switch means when said timer means is activated whereby to prevent said means for advancing from receiving said signal, said switch means being closed when said timer is not activated; whereby to introduce an element of time randomness in the advancement of said representations.