Ring-roller pressure molding of metal powders and the like

Claim 1

APPARATUS FOR PRESSURE MOLDING METAL POWDERS AND THE LIKE, COMPRISING: A PERIPHERALLY FLANGED ROLL MEMBER AND AN INTERIORLY GROOVED RING MEMBER OF LARGER DIAMETER, MEANS ROTATABLY MOUNTING SAID MEMBERS ON PARALLEL AXES FOR ADJUSTABLE AXIAL SPACING AND WITH SAID ROLL FLANGE PENETRATING SAID GROOVE, SAID MEANS INCLUDING SPACED ROOLS ON WHICH SAID RING MEMBER IS ROTATABLY SUPPORTED, AND VERTICALLY DISPLACEABLE BEARINGS FOR SAID ROLL MEMBER, HYDRAULIC PRESSURE ACTUATED HOLD-DOWN MEANS URGING SAID ROLL FLANGE TO MAXIMUM PENETRATION IN SAID GROOVE UNDER A PRESELECTED HYDRAULIC PRESSURE, MEANS FOR CONCURRENTLY ROTATING SAID MEMBER, MEANS FOR CONTINUOUSLY FEEDING SAID POWDERS INTO SAID GROOVE FOR COMPRESSION THEREIN BETWEEN SAID MEMBERS AT SAID PRESELECTED PRESSURE, AND MEANS FOR THEREAFTER PROGRESSIVELY STRIPPING SAID COMPACTED POWDER FROM SAID GROOVE IN SELF-SUSTAINING ARCUATE SEGMENTS, SAID POWDER FEEDING MEANS INCLUDING A VARIABLE SPEED MOTOR FOR FAVRYING THE RATE OF FEED, A POWER SUPPLY CIRCUIT FOR SAID MOTOR INCLUDING A SPEED CONTROL FOR SAID MOTOR, AND AN ACTUATING ARM FOR SAID CONTROL MOUNTED ON ONE OF SAID BEARINGS FOR ACTUATING SAID CONTROL TO REDUCE THE MOTOR SPEED AS SAID BEARING IS RAISED, AND FOR OPENING SAID SUPPLY CIRCUIT TO STOP SAID MOTOR AT A PRESELECTED ELEVATION OF SAID BEARING.