Audio-visual system

Claim 2

An audio visual projector adapted to receive a cartridge containing an endless tape having a sound track and a signal track thereon on a first reel and an endless flimstrip in a loop comprising: start means on said housing responsive to reception of a portion of a cartridge within the housing to activate a tape drive motor, a lamp and a power source; tape engaging and audio pick-up head means in said housing to engage the exposed portion of the tape when a cartridge is received in the housing and response to said tape drive motor to drive said continuous tape; audio means in said housing in communication with said pick-up head means to transmit the sound tracks from said tape; discriminator means in said housing in communication with said pick-up head to receive and respond to signals received from said tape; film transport means in said housing to engage an exposed portion of said filmstrip when a cartridge is received in said housing and being adapted to transport said film; film advance means in said housing and in communication with said discriminator means and said film transport means so that when a signal is received by said discriminator means it will respond by causing said film advance means to drive said film transport means and transport said film to thereby permit said tape and film to be advanced in a predetermined sequence; a projector lens in said housing and aligned with the exposed portion of film in a cartridge positioned in the housing; condenser and direction means in said housing and being cooperative with a cartridge position in the housing and in association with said lamp to condense and direct light from said lamp onto the rear of film in the cartridge and to pass through the film and align the lens and thereby project an image of the exposed frame of film; cooling means in said housing to assist in preventing the exposed filmstrip of an attached cartridge from overheating; said film advance means including a solenoid with a reciprocal arm which will move outwardly with respect to said solenoid upon stimulation of a signal from said tape; a return spring on said solenoid to return said arm to its initial position subsequent to its extension, the solenoid arm thus actuating said film transport means and advancing said film; said film transport means including a movable arm having a claw means at one end thereof to engage with the sprocket holes in the filmstrip and being in communication with a block having a predetermined cam surface; said arm having a cam follower attached thereto so as to move with respect to said cam surface; and the end of said solenoid arm extending from said solenoid connected to one of said film transport arm and block so that when said solenoid arm is reciprocated said film transport arm will follow said cam surface and will disengage and re-engage with sprocket holes in said film in a manner which will advance the film a predetermined distance.

Claim 3

An audio visual projector adapted to removably receive a single cartridge containing an endless tape having a sound track and a signal track thereon on a first reel and an endless filmstrip in a loOp in side-by-side relationship comprising: start means on said housing responsive to reception of a portion of a cartridge within the housing and in engagement therewith to activate a tape drive motor, a lamp and a power source; tape engaging and audio pick-up head means in said housing to engage the exposed portion of the tape when a cartridge is received in the housing and responsive to said tape drive motor to drive said continuous tape; audio means in said housing in communication with said pick-up head means to transmit the sound tracks from said tape; discriminator means in said housing in communication with said pick-up head to receive and respond to signals received from said tape; film transport means in said housing adjacent to said tape engaging an audio pick-up head means to engage an exposed portion of said filmstrip in the cartridge when a cartridge is received in said housing and being adapted to transport said film; film advance means in said housing and in communication with said discriminator means and said film transport means so that when a signal is received by said discriminator means it will respond by causing said film advance means to drive said film transport means and transport said film in the cartridge to thereby permit said tape and film to be advanced in a predetermined sequence while retaining the tape and film substantially entirely within the cartridge during operation; a projector lens in said housing and aligned with the exposed portion of film in a cartridge positioned in the housing; condenser and direction means in said housing and being cooperative with a cartridge position in the housing and in association with said lamp to condense and direct light from said lamp onto the rear of film in the cartridge and to pass through the film and align the lens and thereby project an image of the exposed frame of film; cooling means in said housing to assist in preventing the exposed filmstrip of an attached cartridge from overheating while retaining the filmstrip in aligned relationship with the tape; said cooling means including a blower connected to said housing so as to exhaust air from said housing thus drawing air through a structure in said housing including a plenum path in communication with the apertures in the cartridge so that air passes through said cartridge containing said film into a plenum chamber adjacent said lamp and into said blower for exhaust from said housing; said suction and structure means providing a controlled rapid flow of air in communication with the portion of said filmstrip exposed for projection so as to cool said film and prevent buckling thereof and so as to vacuum clean particles of dust off said film thereby preventing unwanted defects in the projected image and scratches to the film; and the air flow leaving said structure and entering said plenum chamber in said housing thereby assisting to cool the interior of the housing adjacent to the lamp and to cool the lamp itself.

Claim 4

An audio visual projector adapted to removably receive a single cartridge containing an endless tape having a sound track and a signal track thereon on a first reel and an endless filmstrip in a loOp in side-by-side relationship comprising: start means on said housing responsive to reception of a portion of a cartridge within the housing and in engagement therewith to activate a tape drive motor, a lamp and a power source; tape engaging and audio pick-up head means in said housing to engage the exposed portion of the tape when a cartridge is received in the housing and responsive to said tape drive motor to drive said continuous tape; audio means in said housing in communication with said pick-up head means to transmit the sound tracks from said tape; discriminator means in said housing in communication with said pick-up head to receive and respond to signals received from said tape; film transport means in said housing adjacent to said tape engaging an audio pick-up head means to engage an exposed portion of said filmstrip in the cartridge when a cartridge is received in said housing and being adapted to transport said film; film advance means in said housing and in communication with said discriminator means and said film transport means so that when a signal is received by said discriminator means it will respond by causing said film advance means to drive said film transport means and transport said film in the cartridge to thereby permit said tape and film to be advanced in a predetermined sequence while retaining the tape and film substantially entirely within the cartridge during operation; a projector lens in said housing and aligned with the exposed portion of film in a cartridge positioned in the housing; condenser and direction means in said housing and being cooperative with a cartridge position in the housing and in association with said lamp to condense and direct light from said lamp onto the rear of film in the cartridge and to pass through the film and align the lens and thereby project an image of the exposed frame of film; cooling means in said housing to assist in preventing the exposed filmstrip of an attached cartridge from overheating while retaining the filmstrip in aligned relationship with the tape; said cooling means including a blower connected to said housing so as to exhaust air from said housing thus drawing air through a structure in said housing including a plenum path in communication with the apertures in the cartridge so that air passes through said cartridge containing said film into a plenum chamber adjacent said lamp and into said blower for exhaust from said housing; said suction and structure means providing a controlled rapid flow of air in communication with the portion of said filmstrip exposed for projection so as to cool said film and prevent buckling thereof and so as to vacuum clean particles of dust off said film thereby preventing unwanted defects in the projected image and scratches to the film; and the air flow leaving said structure and entering said plenum chamber in said housing thereby assisting to cool the interior of the housing adjacent to the lamp and to cool the lamp itself.