Sound reproducing apparatus

Claim 1

IN A SOUND REPRODUCING APPARATUS, A ROTARY DISK HAVING AN EXPOSED SIDE PROVIDED WITH A SERIES OF INDEPENDENT CONCENTRIC HELICAL SOUND GROOVES EACH HAVING AN OUTER CONVOLUTION AND AN INNER CONVOLUTION RESPECTIVELY LOCATED AT A FIRST AND SECOND DISTANCE FROM THE PERIPHERY OF SAID DISK; A REWINDABLE SPRING FOR ROTATING SAID DISK; A DEVICE FOR WINDING SAID SPRING INCLUDING A FLEXIBLE ELEMENT WHICH IS STRETCHED WHEN THE SPRING IS HELD AGAINST UNWINDING AND WHICH IS SLACK WHEN THE SPRING UNWINDS TO ROTATE SAID DISK; A TONE ARM INCLUDING A STYLUS OVERLYING SAID DISK AND BEING MOVABLE WITH THE STYLUS BETWEEN A SERIES OF STARTING AND SECOND POSITIONS RESPECTIVELY LOCATED AT A FIRST AND SECOND DISTANCE FROM THE PERIPHERY OF SAID DISK, SAID STYLUS BEING ALIGNED WITH THE OUTER CONVOLUTION OF A DIFFERENT SOUND GROOVE IN EACH STARTING POSITION AND WITH THE INNER CONVOLUTION OF THE RESPECTIVE SOUND GROOVE IN EACH SECOND POSITION OF SAID TONE ARM, SAID STYLUS NORMALLY ENGAGING SAID DISK TO TRACK A SOUND GROOVE WHEN THE DISK ROTATES AND SAID TONE ARM BEING ARRANGED TO SEPARATE STYLUS AND DISK IN RESPONDS TO STRETCHING OF SAID FLEXIBLE ELEMENT; MEANS FOR RETURNING THE TONE ARM TO ONE OF SAID STARTING POSITIONS WHEN THE STYLUS IS DISENGAGED FROM SAID DISK; SAID STOP MEANS FOR ARRESTING THE TONE ARM IN ONE OF SAID STARTING POSITIONS, COMPRISING A ROTARY ARRESTING MEMBER HAVING A PLUALITY OF STOP FACES EACH DISPOSED AT A DIFFERENT DISTANCE FROM THE AXIS OF SAID ARRESTING MEMBER, SAID STOP FACES BEING MOVABLE INTO THE PATH OF SAID TONE ARM TO ARREST THE STYLUS IN DIFFERENT STARTING POSITIONS, AND MOTION TRANSMITTING MEANS OPERATIVELY CONNECTED WITH SAID FLEXIBLE ELEMENT FOR ROTATING SAID ARRESTING MEMBER AND COMPRISING A RECIPROCABLE MEMBER ARRANGED TO MOVE IN A DIRECTION TO ROTATE SAID ARRESTING MEMBER IN RESPONSE TO STRETCHING OF SAID FLEXIBLE ELEMENT.