Transducer

Claim 1

AN ELECTROMECHANICAL TRANSDUCER COMPRISING IN COMBINATION: MAGNET MEANS HAVING TWO OPPOSITE POLES PIECES ALIGNED ALONG A COMMON AXIS AND INCLUDING MUTUALLY SPACED PARALLEL POLE FACES HAVING AN AIR GAP THEREBETWEEN; ARMATURE MEANS AND MEANS FOR MOVABLY MOUNTING THE LATTER WITH RESPECT TO SAID MAGNET MEANS, SAID ARMATURE MEANS INCLUDING COIL SUPPORT MEANS SUBSTANTIALLY DISPOSED IN A PLANE EXTENDING THROUGH SAID AIR GAP AND PARALLEL WITH SAID POLE FACES AND THE COIL SUPPORT MEANS HAVING AN ACTIVE ZONE LOCATED DIRECTLY BETWEEN THE POLE FACES AND HAVING A COUPLING ZONE SURROUNDING SAID ACTIVE ZONE AND LOCATED OUTSIDE OF THE SPACE DIRECTLY BETWEEN SAID POLE FACES; TWO SYSTEMS OF WINDINGS SUPPORTED ON SAID COIL SUPPORT MEANS, EACH SYSTEM INCLUDING TERMINALS MEANS AND AT LEAST TWO MUTUALLY PARALLEL LINEAR CONDUCTORS PASSING THROUGH THE ACTIVE ZONE AND SYMMETRICALLY DISPOSED ABOUT SAID AXIS, THE LINEAR CONDUCTORS OF EACH SYSTEM CROSSING THE LINEAR CONDUCTORS OF THE OTHER SYSTEM AT RIGHT ANGLES; COUPLING CONDUCTORS JOINING SAID LINEAR CONDUCTORS ADDITIVELY IN SERIES AND COUPLING THEM WITH SAID TERMINAL MEANS, SAID COUPLING CONDUCTORS IN EACH SYSTEM LYING IN SAID COUPLING ZONE AND BEING SUBSTANTIALLY SYMMETRICALLY DISPOSED PERIPHERALLY ABOUT SAID AIR GAP ON OPPOSITE SIDES OF A PLANE INCLUDING SAID AXIS AND DISPOSED PARALLEL WITH THE LINEAR CONDUCTORS OF THE SAME SYSTEM, SAID LINEAR AND COUPLING CONDUCTORS LYING IN SUBSTANTIALLY THE SAME PLANE, SAID PLANE BEING PARALLEL TO SAID PLANE EXTENDING THROUGH SAID AIR GAP, AND SAID COUPLING CONDUCTORS FORMING TWO HALF COILS COMPRISING, RESPECTIVELY, THE OPPOSITE SIDES OF THE LINEAR CONDUCTORS, ONE OF WHICH HALF COILS IS WOUND CLOCKWISE AND THE OTHER OF WHICH HALF COILS IS WOUND COUNTER-CLOCKWISE RELATIVE TO A GIVEN ORIENTATION IN SPACE; AND PHONOGRAPH STYLUS MEANS CARRIED BY SAID ARMATURE MEANS.