Oscillating drive means

Claim 1

A TORSIONALLY OSCILLATING RESONANT SYSTEM FOR TREATMENT OF MATERIAL COMPRISING AN ACTION MASS HAVING A TREATING SURFACE ADAPTED TO CONTACT SAID MATERIAL, A REACTION MASS BALANCING SAID ACTION MASS, A TORSION BAR ELASTICALLY COUPLING SAID MASSES FOR OSCILLATING IN OPPOSITE PHASE, SAID MASSES AND BAR COMPRISING A SYSTEM HAVING A RESONANT FREQUENCY OF VIBRATION AT WHICH SAID MASSES OSCILLATE AT THE SAME FREQUENCY BUT IN SAID OPPOSITE PHASE, AND AT WHICH FREQUENCY THE MASS OF SAID ACTION AND REACTION MASSES IS THEREBY REDUCED EFFECTIVELY TO ZERO, AND AN ELECTRODYNAMIC DRIVE FOR SAID SYSTEM, SAID DRIVE COMPRISING AN ELECTRICALLY CONDUCTING DISC COMPRISES IN THE REACTION MASS OF SAID MATERIAL TREATING SYSTEM, AN EVEN PLURALITY OF PASSAGES THROUGH SAID DISC, AND EVEN PLURALITY OF MAGNETIC FLUX CORES FIXEDLY MOUNTED ADJACENT SAID DISC AND EACH HAVING PORTIONS EXTENDING THROUGH A RESPECTIVE PASSAGE, SAID PASSAGES AND CORE PORTIONS BEING RELATIVELY PORPORTIONED FOR SOME FREEDOM OF OSCILLATING MOVEMENT OF SAID DISC RELATIVE TO SAID CORE PORTIONS, MEANS FOR PRODUCING AN ALTERNATING MAGNETIC FLUX IN SAID CORE PORTIONS AND SO AS TO INDUCE IN SAID DISC ALTERNATING CURRENT FLOWING RADIALLY INWARD AND OURWARD IN DISC PORTIONS INTERMEDIATE THE PORTIONS OCCUPIED BY SAID PASSAGES AND CORE PORTIONS, AN EVEN PLURALITY OF MAGNETS FIXEDLY MOUNTED IN JUXTAPOSITION TO SAID INTERMEDIATE DISC PORTIONS, SAID MAGNETS ALTERNATELY OF OPPOSITE POLARITY WHEREBY TO PRODUCE A FORCE ACTING IN A DIRECTION AT RIGHT ANGLES TO SAID CURRENT FLOW AND SAID MAGNETIC FLUX AND EFFECTIVE TO DRIVE SAID DISC MASS IN ONE AND THE OPPOSITE DIRECTION UPON THE INDUCING AND ALTERNATING OF SAID CURRENT FLOW AT OR NEAR THE RESONANT FREQUENCY OF SAID SYSTEM.