Stereophonic moving magnet phonograph pickup

Claim 1

A PHONOGRAPH PICKUP CARTRIDGE COMPRISING A CARTRIDGE BODY AND A TRANSDUCER SYSTEM OPERATIVELY MOUNTED THEREIN, SAID TRANSDUCER SYSTEM COMPRISING A PAIR OF ELECTROMAGNETS EACH COMPRISED OF A CORE TERMINATING IN A PAIR OF SPACED-APART POLE PIECES FORMING A GAP THEREBETWEEN AND A COIL ARRANGED ABOUT SAID CORE, THE ORIENTATION OF SAID POLE PIECES BEING SUCH THAT THEY FORM A COMMON GAP WITH THE GAP SPACING DIRECTIONS OF THE RESPECTIVE PAIRS OF POLE PIECES PERPENDICULAR TO EACH OTHER, AND AN ARMATURE-STYLUS SUBASSEMBLY, SAID SUBASSEMBLY COMPRISING A GENERALLY SHEET-FORM SUPPORTING MEMBER HAVING A SLEEVE AT ONE END MOUNTED WITHIN SAID COMMON GAP, A BEARING OF AN ELASTOMERIC MATERIAL HAVING AN AXIALLY POSITIONED APERTURE FORMING A SOCKET FIXEDLY MOUNTED WITHIN SAID SLEEVE, AN ARMATURE COMPRISING A PERMANENT MAGNET OPERATIVELY MOUNTED IN SAID SOCKET FOR ANGULAR VIBRATION WITHIN SAID COMMON GAP SUBSTANTIALLY ABOUT A POINT INTERMEDIATE THE POLES OF SAID MAGNET, THE MAGNETIC AXIS OF SAID ARMATURE BEING ORIENTED SUBSTANTIALLY PERPENDICULAR TO THE SPACING DIRECTION OF SAID PAIRS OF POLE PIECES, AND A STYLUS AFFIXED TO SAID ARMATURE FOR TRANSMITTING VIBRATION THERETO, WHEREBY SAID SUBASSEMBLY IS REMOVABLE BY GRASPING SAID SUPPORTING MEMBER AND RETRACTING SAID SUBASSEMBLY AXIALLY.