Vibratory machines

Claim 1

A MACHINE FOR SUBJECTING MATERIALS TO VIBRATORY TREATMENT, COMPRISING A STATIONARY BASE HAVING A FIRST BEARING MOUNTED THEREON, AN ELONGATED SHAFT MOUNTED FOR ROTATION IN AND EXTENDING UPWARDLY FROM SAID BEARING IN FIXED ANGULAR RELATION TO SAID BASE, A NON-ROTARY STRUCTURE FOR SUPPORTING THE MATERIAL TO BE TRATED, SAID STRUCTURE BEING MOUNTED ON AN UPPER END PORTION OF SAID SHAFT THROUGH A SECOND BEARING IN WHICH SAID END PORTION IS ROTATABLE BUT IS IMMOVABLE RADIALLY AND ANGULARLY RELATIVE TO SAID STRUCTURE, SAID SHAFT BEING ROTATABLE AT A LOW SPEED ON AN AXIS SUBSTANTIALLY COINCIDING WITH THE CENTERS OF SAID BEARINGS, DRIVING MEANS FOR ROTATING SAID SHAFT TO HIGH SPEED, ECCENTRIC MASS MEANS FIXED TO SAID SHAFT TO HIGH SPEED, UPON ROTATION OF SAID SHAFT AT HIGH SPEED TO DISPOSE THE DYNAMIC AXIS OF SAID SHAFT TO ONE SIDE OF THE CENTER OF SAID SECOND BEARING AND SUBSTANTIALY IN AXIAL ALIGNMENT WITH SAID FIRST BEARING, SO AS TO IMPART TO SAID STRUCTURE GYRATORY NUTATIONAL MOVEMENTS OF HIGH FREQUENCY ABOUT SAID DYNAMIC AXIS, A COUNTERWEIGHT OF GREATER MASS THAN SAID STRUCTURE RIGIDLY CONNECTED WITH SAID STRUCTURE AND LOCATED BELOW AND REMOTE FROM SAID SECOND BEARING TO CENTER SAID MOVEMENTS AT A NODAL POINT NEARER TO SAID BASE