Vibrating eccentric mass device comprising one or more pairs of vibrators independently rotating in opposite direction to one another

Claim 1

A VIBRATING DEVICE COMPRISING, A BASE MEMBER, FIRST AND SECOND PARALLEL, AXIALLY EXTENDING SHAFTS HAVING THE AXES THEREOF LYING IN A FIRST PLANE, MOUNTING MEANS CONNECTED WITH SAID BASE MEMBER AND SAID SHAFTS SUPPORTING SAID SHAFTS FOR AXIAL ROTATION, MEANS CONNECTED WITH SAID BASE MEMBER AND SAID SHAFTS FOR CONCURRENTLY ROTATING SAID SHAFTS IN OPPOSITE DIRECTIONS, SUPPORT MEANS CONNECTED WITH SAID BASE MEMBER SUPPORTING SAID BASE MEMBER FOR LIMITED MOTION IN DIRECTIONS PARALLEL TO AND PERPENDICULAR TO SAID FIRST PLANE, A FIRST PAIR OF GENERALLY EQUAL MASSES DISPOSED IN A SECOND PLANE PERPENDICULAR TO SAID FIRST PLANE AND INTERSECTING SAID SHAFTS AT RIGHT ANGLES, FIRST SECURING MEANS FOR FIXEDLY SECURING ONE OF SAID MASSES IN SAID FIRST PAIR OF SAID FIRST SHAFT PAIR SECURING THE OTHER OF SAID MASSES IN SAID FIRST PAIR TO SAID SECOND SHAFT, EACH OF SAID MASSES OF SAID FIRST PAIR HAVING A CENTER OF GRAVITY ECCENTRICALLY DISPLACED FROM THE AXIS OF ROTATION OF THE ASSOCIATED ONE OF SAID SHAFTS TO CAUSE EACH OF SAID MASSES DURING ROTATION THEREOF TO EXERT A DYNAMIC FORCE UPON THE ASSOCIATED ONE OF SAID SHAFTS WITH THE DYNAMIC FORCE HAVING INSTANTANEOUS FORCE COMPONENTS PARALLEL TO AND PERPENDICULAR TO SAID FIRST PLANE, SAID FIRST SECURING MEANS SECURING SAID MASSES IN SAID FIRST PAIR TO THE RESPECTIVE SAID SHAFTS IN SUCH ANGULAR RELATION TO EACH OTHER AS TO CAUSE THE RESPECTIVE FORCE COMPONENTS PARALLEL TO SAID FIRST PLANE EXERTED BY SAID MASSES OF SAID FIRST PAIR TO BE EQUAL AND OPPOSITE AND TO CAUSE THE RESPECTIVE FORCE COMPONENTS PERPENDICULAR TO SAID FIRST PLANE EXERTED BY SAID MASSES OF SAID FIRST PAIR TO BE EQUAL AND ADDITIVE; A SECOND PAIR OF GENERALLY EQUAL MASSES DISPOSED IN A THIRD PLANE, SAID THIRD PLANE BEING PARALLEL TO AND SPACED FROM SAID SECOND PLANE, SECOND SECURING MEANS FOR FIXEDLY SECURING ONE OF SAID MASSES IN SAID SECOND PAIR TO SAID FIRST SHAFT AND FOR SECURING THE OTHER OF SAID MASSES IN SAID SECOND PAIR TO SAID SECOND SHAFT, EACH OF SAID MASSES OF SAID SECOND PAIR HAVING A CENTER OF GRAVITY ECCENTRICALLY DISPLACED FROM THE AXIS OF ROTATION OF THE ASSOCIATED ONE OF SAID SHAFTS TO CAUSE EACH OF SAID MASSES DURING ROTATION THEREOF TO EXERT A DYNAMIC FORCE UPON THE ASSOCIATED ONE OF SAID SHAFTS WITH THE DYNAMIC FORCE HAVING INSTANTANEOUS FORCE COMPONENTS PARALLEL TO AND PERPENDICULAR TO SAID FIRST PLANE, SAID SECOND SECURING MEANS SECURING SAID MASSES IN SAID SECOND PAIR TO THE RESPECTIVE SAID SHAFTS IN SUCH ANGULAR RELATION TO EACH OTHER AS TO CAUSE THE RESPECTIVE FORCE COMPONENTS PARALLEL TO SAID FIRST PLANE EXERTED BY SAID MASSES OF SAID SECOND PAIR TO BE EQUAL AND OPPOSITE AND TO CAUSE THE RESPECTIVE FORCE COMPONENTS PERPENDICULAR TO SAID FIRST PLANE TO BE EQUAL AND ADDITIVE; SAID MASSES IN SAID FIRST PAIR BEING OPPOSITELY ANGULARLY RELATED TO SAID MASSES IN SAID SECOND PAIR TO CAUSE SAID ADDITIVE FORCE COMPONENTS EXERTED BY SAID FIRST PAIR OF MASSES TO BE DIRECTED IN AN OPPOSITE DIRECTION TO SAID ADDITIVE FORCE COMPONENTS EXERTED BY SAID SECOND PAIR OF MASSES; WHEREBY AN ALTERNATING COUPLE ACTING ABOUT AN AXIS INTERMEDIATE AND PARALLEL TO SAID SECOND AND THIRD PLANES AND LYING IN SAID FIRST PLANE IS APPLIED TO SAID BASE MEMBER TO IMPART THERETO A VIBRATORY RECTILINEAR SHAKING MOTION PERPENDICULAR TO SAID FIRST PLANE.