Automated instructional device

Claim 1

IN AN AUDIO-VISUAL TEACHING MACHINE HAVING MEANS FOR PRESENTING IN STEP-WISE SEQUENCE SUCCESSIVE FRAMES OF VISUAL STIMULUS, AN AUDIO RECORD MEDIUM COMPRISING A PLURALITY OF PARALLEL ENDLESS STORAGE TRACKS DISPOSED ON THE MEDIUM IN SEQUENCE AND IN ORDER OF MATERIAL STORED ON SAID VISUAL RECORD MEDIUM, EACH TRACK CARRYING AN AUDIO STIMULUS RELATED TO ONE OF THE FRAMES OF VISUAL STIMULUS, AND CONTROL MEANS FOR INDEPENDENTLY PRESENTING THE AUDIO AND VISUAL STIMULI TO A USER IN SUCH A WAY AS TO ALLOW THAT USE TO MAKE A RESPONSE TO THE PRESENTED STIMULUS, THE IMPROVEMENT WHICH COMPRISES MEANS FOR SUPPORTING AND ROTATING THE SAID AUDIO RECORD MEDIUM ABOUT THE LONGITUDINAL AXIS THEREOF TRANSVERSE TO THE PARALLEL RECORD TRACKS, A SCANNING HEAD FOR SCANNING SAID RECORD TRACKS IN SEQUENCE, MOTOR MEANS FOR ADVANCING SAID SCANNING HEAD TO DIFFERENT ONES OF SAID PARALLEL TRACKS TO SCAN SAME, AND MEANS FOR SYNCHRONIZING THE MOVEMENT OF SAID SCANNING HEAD WITH THE MOVEMENT OF SAID VISUAL RECORD MEDIUM SO THAT AS SUCCESSIVE FRAME OF SAID VISUAL RECORD MEDIUM ARE PRESENTED FOR VISUAL DISPLAY SUCCESSIVE ONES OF SAID RECORD TRACKS ARE SCANNED BY SAID SCANNING HEAD, AND MEANS FOR TRANSLATING THE SIGNALS PRODUCED BY SAID SCANNING HEAD INTO AN AUDIO STIMULUS.