Audio visual apparatus

Claim 1

AUDIO VISUAL APPARATUS COMPRISING A TRANSPARENCY HOLDER; MEANS SUPPORTING SAID HOLDER FOR GRAVITY-RESPONSIVE SLIDING MOVEMENT ON A VERTICAL AXIS, SAID HOLDER HAVING A SERIES OF INDEXING TEETH ARRANGED IN A ROW EXTENDING DIAGONALLY WITH REFERENCE TO SAID VERTICAL AXIS, AND A VERTICAL ROW OF PICTURE TRANSPARENCIES CARRIED BY SAID HOLDER; A PROJECTOR IN SAID HOUSING, POSITIONED FOR PROJECTING A LIGHT BEAM THROUGH SAID ROW OF TRANSPARENCIES; A TURNTABLE FOR SUPPORTING AND ROTATING A PHONOGRAPH RECORD AND PROVIDED WITH MEANS FOR DRIVING THE SAME; A TONE ARM HAVING A STYLUS FOR FOLLOWING A SOUND GROOVE IN SAID RECORD AND MOUNTED FOR HORIZONTAL ARCUATE SWINGING MOVEMENT; AND A ROTATABLE INDEXING FINGER SECURED TO SAID TONE ARM FOR ARCUATE SWINGING MOVEMENT IN UNISON THEREWITH, SAID FINGER HAVING A FREE END PORTION ENGAGEABLE SUCCESSIVELY BENEATH SAID INDEXING TEETH AND SUCCESSIVELY RELEASABLE THEREFROM AS THE TONE ARM FOLLOWS SAID RECORD GROOVE HORIZONTALLY, WHEREBY TO SUCCESSIVELY INDEX SAID HOLDER FOR DOWNWARD MOVEMENT BY GRAVITY TO SUCCESSIVELY PRESENT SUCCEEDING PICTURE TRANSPARENCIES TO THE LIGHT BEAM OF SAID PROJECTOR.