Projector construction

Claim 1

IN A PROJECTOR CONSTRUCTION, THE IMPROVEMENT COMPRISING A HOUSING, A FILM STRIP INCLUDED IN A CATRIDGE MOUNTED WITHIN SAID HOUSING, SAID CARTRIDGE BEING OF THE TYPE CONFINING AN ENDLESS LENGTH OF FILM STRIP WHEREBY REPEATED PROJECTION OF THE FILM STRIP CAN BE ACCOMPLISHED WITHOUT REMOVAL OF THE STRIP FROM THE CARTRIDGE, A LIGHT SOURCE WITHIN THE HOUSING ADAPTED TO DIRECT LIGHT ONTO FRAMES IN SAID FILM, A PROJECTOR SCREEN MOUNTED ON THE HOUSING FOR DISPLAYING THE PROJECTED IMAGES ON SAID STRIP, AND DRIVE MEANS FOR ENGAGING SAID STRIP TO SUCCESSIVELY MOVE SAID FRAMES PAST SAID LIGHT SOURCE, SAID DRIVE MEANS INCLUDING A MANUAL ACTUATING MEANS WHEREBY THE STRIP CAN BE STOPPED DURING PROJECTION AND WHEREBY THE SPEED OF MOVEMENT OF THE STRIP PAST SAID LIGHT SOURCE CAN BE MANUALLY CONTROLLED, SAID CARTRIDGE INCLUDING A GUIDE PLATE FOR SAID FILM STRIP WITH AN APERTURE IN SAID GUIDE PLATE FOR PASSAGE OF LIGHT THERETHROUGH, SAID STRIP INCLUDING SPROCKET HOLES, AN OPENING DEFINED BY SAID GUIDE PLATE OVER WHICH THE SPROCKET HOLES OF SAID FILM STRIP PASS, A SPROCKET CONNECTED TO SAID DRIVE MEANS HAVING TEETH ADAPTED TO EXTEND THROUGH SAID OPENING AND TO BE RECEIVED BY SAID SPROCKET HOLES FOR MOVEMENT OF SAID FILM, AN APERTURE PLATE MOUNTED IN SAID CONSTRUCTION HAVING AN APERTURE DEFINED THEREIN FOR COMMUNICATION WITH SAID FIRST MENTIONED APERTURE, PROJECTIONS FORMED IN SAID APERTURE PLATE, ADDITIONAL OPENINGS IN SAID GUIDE PLATE FOR RECEIVING SAID PROJECTIONS TO THEREBY ACCURATELY ALIGN SAID CARTRIDGE IN SAID CONSTRUCTION, A REFLECTING MIRROR AND LENS WHEREBY SAID LIGHT SOURCE IS ADAPTED TO DIRECT LIGHT ONTO SAID MIRROR AND THEN THROUGH SAID LENS FOR PASSAGE THROUGH SAID FILM STRIP, MEANS MOUNTING SAID LENS AND MIRROR ON A COMMON PIVOTAL AXIS, SAID CARTRIDGE INCLUDING A RECESSED PORTION FOR RECEIVING SAID MIRROR AND LENS IN AN OPERATING POSITION, AND MEANS ON SAID CARTRIDGE FOR PIVOTING SAID MIRROR AND LENS BETWEEN SAID OPERATING POSITION AND AN INOPERATIVE POSITION TO THEREBY PROVIDE CLEARANCE FOR INSERTION AND REMOVAL OF SAID CARTRIDGE.