Control apparatus for forming mechanism

Claim 1

IN A MACHINE FOR FORMING A MATERIAL INTO COHESIVE MASSES OF LIKE SHAPE AND SIZE, A ROTOR HAVING A RADIAL BORE CONFORMING IN CROSS SECTION TO THE MASSES TO BE FORMED AND HAVING AN AXIAL BORE INTERSECTING THE RADIAL BORE, A MANIFOLD IN CONTACT WITH THE PERIPHERY OF THE ROTOR AND HAVING AN OUTLET TO DISCHARGE THE MATERIAL UNDER PRESSURE, MEANS FOR TURNING THE ROTOR TO BRING THE RADIAL BORE INTO AND OUT OF CONNECTION WITH THE OUTLET OF THE MANIFOLD DURING EACH REVOLUTION OF THE ROTOR, AND A PISTION SLIDABLE INWARDLY WITHIN THE RADIAL BORE UNDER PRESSURE OF THE MATERIAL WITHIN SAID MANIFOLD AS THE RADIAL BORE MOVES ACROSS THE MANIFOLD, THE IMPROVEMENT COMPRISING A ROLLER IN SAID AXIAL BORE IN RADIAL ALIGNMENT WITH THE MANIFOLD FOR LIMITING INWARD MOVEMENT OF THE PISTON AND FOR PROVIDING A ROLLING SUPPORT FOR THE PISTON DURING THE TIME THAT THE PISTON IS SUBJECTED TO THE CHARGING PRESSURE, AND MEANS WITHIN SAID AXIAL BORE FOR CONTACT WITH THE INNER END OF THE PISTON AS THE PISTON IS CARRIED OFF THE ROLLER AND AWAY FROM SAID MANIFOLD TO MOVE THE PISTON OUTWARDLY IN SAID BORE FOR EJECTING THE CHARGE OF MATERIAL.