Electromagnetic transducer and method of fabrication

Claim 1

ELECTROMAGNETIC TRANSDUCER APPARATUS FOR USE WITH MOVABLE RECORD MEDIA HAVING A MAGNETIZABLE RECORDING SURFACE THEREON COMPRISING, AN ELONGATED FLEXIBLE MOUNTING MEMBER OF HOMOGENEOUS MATERIAL THROUGHOUT ITS EXTENT HAVING AN APERTURE THEREIN APPROXIMATELY CENTRALLY LOCATED BETWEEN ITS ENDS, A BLOCK OF CARBONACEOUS MATERIAL DISPOSED WITHIN SAID APERTURE,TRANSDUCER APPARATUS INCLUDING A PLURALITY OF ELECTROMAGNETIC RECORDER-REPRODUCER MEMBERS MOUNTED IN PARALLEL SPACED APART RELATIONSHIP WITHIN SAID BLOCK ON SAID FLEXIBLE MEMBER WITH PORTIONS OF SAID REPRODUCER MEMBERS EXTENDING THROUGH SAID APERTURE, ELECTRICALLY CONDUCTIVE MEANS DISPOSED ON A SURFACE OF SAID MOUNTING MEMBER AND EXTENDING FROM THE TRANSDUCER APPARATUS TO AT LEAST ONE END OF THE MEMBER, EACH RECORDER-REPRODUCER MEMBER INCLUDING ONE OR MORE OPERATING WINDINGS THEREON INTERCONNECTED WITH SAID ELECTRICAL CONDUCTING MEANS ON SAID FLEXIBLE MOUNTING MEMBER, MEANS MOUNTING SAID FLEXIBLE MOUNTING MEMBER SOLELY AT ITS OPPOSITE ENDS TO SPACED APART SUPPORTS WHEREBY THE BALANCE OF THE MEMBER IS SLUNG THEREBETWEEN AND PROVIDES A FLEXIBLE SUSPENSION FOR THE TRANSDUCER APPARATUS, AND MEANS FOR VARYING THE SPACING OF THE SUPPORTS IN ORDER TO VARY THE TAUTNESS OF THE SUSPENDED PORTION OF THE MEMBER.