Hurt, Richardson, Garner, Todd & Cadenhead
Method and apparatus for producing spherical objects
 A method and apparatus for producing spherical objects is disclosed, the apparatus having a reservoir filled with a relatively dense molten material, the reservoir being heated and hydraulically pressurized to maintain the molten state of the dense material. A second molten liquid, of lesser density and higher melting point is injected into the reservoir, the pressure and surface tension acting to force the injected material into a spherical form and the melting point difference acting to solidify the injected material. 
B Y
B22D Y10T
inventional additional
Harry J.
Robertson