Straining and sifting apparatus

Claim 1

IN SIFTING STRAINING APPARATUS THE COMBINATION OF A BASE TO WHICH ARE SECURED A FRAMEWORK COMPRISING AT LEAST THREE UPSTANDING RIGID SUSPENSION-SUPPORTS DISPOSED SYMMETRICALLY ABOUT A CENTRAL AXIS, YIELDING ANCHORING MEANS ON SAID SUPPORTS, SUSPENSION RODS ANCHORED BY SAID ANCHORING MEANS TO SAID SUPPORTS AND DEPENDING THEREFROM, A SIEVE-CARRYING FRAME COMPRISING A RING NORMALLY CONCENTRIC WITH SAID AXIS AND LOCATED ABOVE THE ANCHORING POINTS OF SAID SUSPENSION RODS ON THE SUPPORTS, DEPENDING FRAMEMEMBERS EXTENDING DOWNWARDLY FROM THE RING, YIELDING ANCHORING MEANS ON THE SAID DEPENDING FRAME MEMBERS, SERVING TO ANCHOR THEM TO THE LOWER ENDS OF THE SUSPENSION RODS, BRACKETS ON SAID DEPENDING FRAME-MEMBERS SECURED TO A FLYWHEEL CASING COAXIAL WITH SAID RING AND LOCATED AT APPROXIMATELY THE SAME LEVEL AS THE UPPER ENDS OF THE SUSPENSION RODS, AN OUT-OF-BALANCE FLYWHEEL IN THE FLYWHEEL CASING, MEANS FOR ROTATING THE SAME, A SUB-FRAMERING ABOVE THE RING OF THE SIEVE-CARRYING FRAME, YIELDING MEANS CONNECTING THE SUB-FRAME-RING TO THE RING OF THE SIEVE-CARRYING FRAME TO PERMIT UP-AND-DOWN YIELDING MOVEMENTS OF THE EDGES OF THE TWO RINGS RELATIVELY TO ONE ANOTHER, AND A SIEVE-SEPTUM MOUNTED ON THE SUB-FRAMERING.