Picture projector apparatus with sound synchronized with projected images

Claim 1

A SLIDE FILM PROJECTOR OF THE TYPE DESCRIBED COMPRISING A CASING HAVING TOP, BOTTOM, FRONT, REAR AND SIDE WALLS, SAID CASING HAVING A SLOT IN ONE OF SAID WALLS, A LAMP HOUSING IN SAID CASING ADJACENT THE REAR WALL, SAID LAMP HOUSING CONTAINING A LAMP THEREIN; A VIEWING SCREEN IN FRONT OF SAID HOUSING; A LENS SYSTEM IN SAID HOUSING IN FRONT OF SAID LAMP FOR DIRECTING A BEAM OF LIGHT THROUGH A PICTURE FRAME AND FOCUSING THE IMAGE FORMED THEREBY ON THE VIEWING SCREEN; FIRST MEANS MOVABLY MOUNTED ON SAID CASING AND ADAPTED TO RECEIVE A PICTURE DISC HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED PICTURE FRAMES THERIN IN A PREDETERMINED POSITION THEREOF; SAID FIRST MEANS BEING MOVABLE THROUGH SAID SLOT BETWEEN A FIRST POSITION WHEREIN A RESPECTIVE ON OF THE PLURALITY OF PICTURE FRAMES IS ALIGNED WITH SAID LIGHT BEAM WHEN A PICTURE DISC IS MOUNTED THEREON, AND A SECOND POSITION WHEREBY A PICTURE DISC MAY BE MOUNTED ON OR REMOVED FROM SAID FIRST MEANS; AND ELECTRO-MECHANICAL MEANS CONNECTED TO SAID FIRST MEANS AND RESPONSIVE TO ELECTRICAL SIGNALS FOR ROTATING SAID FIRST MEANS TO SEQUENTIALLY ALIGN RESPECTIVE ONES OF THE PLURALITY OF PICTURE FRAMES WITH THE LIGHT BEAM.