Educational system and apparatus

Claim 1

A TEACHING MACHINE COMPRISING AN ELECTRICAL TYPEWRITER HAVING A KEYBOARD WITH CHARACTERS DESIGNATED ON THE RESPECTIVE KEYS, A REPRODUCING MACHINE INCLUDING A PRERECORDED RECORD, MEANS FOR SLECTIVELY ACTIVATING SAID REPRODUCING MACHINE TO PRONOUNCE SAID RESPECT CHARACTERS, AN EXHIBITING MACHINE HAVING A RECORD MEDIUM, POINTER MEANS AND MEANS FOR SHIFTING SAID POINTER MEANS RELATIVE TO A MOUNTED RECORD MEDIUM TO DESIGNATE SUCCESSIVE CHARACTERS PRINTED THEREON, MEANS FOR SUPPLYING POWER TO SAID MACHINE INCLUDING A SELECTOR SWITCH HAVING OF "OFF" POSITION AND SUCCESSIVE PHASE POSITIONS: A PHASE I POSITION FOR SUPPLYING POWER ONLY TO SID TYPEWRITER, A PHASE II POSITION FOR SUPPLYING POWER TO BOTH SAID TYPEWRITER AND SAID REPRODUCING MACHINE, AND A PHADE III POSITION FOR SUPPLYING POWER CONCURRENTLY TO SAID TYPEWRITER, REPRODUCING MACHINE AND EXHIBITING MACHINE, AN ELECTROMECHANICAL MEANS ASSOCIATED WITH THE KEY LEVERS OF SAID TYPEWRITER AND CONTROLLED BY SAID ACTIVATING MEANS FOR BLOCKING THE ENTIRE KEYBOARD WHEN ALL THE KEYS ARE RELEASE AND THE REPRODUCING MACHINE IS RUNNING, AND MEANS CONTROLLED BY SAID SELECTOR SWITCH FOR DISABLING SAID KEYBOARD BLOCKING MEANS WHEN SAID SWITCH IS IN SAID PHASE I POSITION AND FOR ABLING SAID BLOCKING MEANS WHEN SAID SWITCH IS IN ITS PHASE II AND PHASE III POSITIONS.