Apparatus for forming threaded molded article

Apparatus for forming a threaded, molded plastic article with an outer surface thereof which comprises:

• a female mold having a mold surface for the formation of the outer surface of said molded plastic article;
• a mold core having an external core surface cooperating with said female mold to form a mold therebetween, said mold having a mold closed position and a mold open position, said mold core and female mold forming a mold cavity in the mold closed position, said mold core being so constructed to form a threaded inner surface of said molded article in the mold closed position;
• means for injecting plastic material into said mold cavity through the female mold;
• means for relatively moving said female mold to a position spaced from the mold core to space the female mold from the molded article and form said mold open position;
• a movable, rotatable stripper ring fitted over a portion of the external core surface having a rearward position in the mold closed position and a forward position in the mold open position, said stripper ring being in contacting relationship with said threaded article in the mold open position;
• and
• means to rotate the stripper ring from the rearward to the forward position thereof and thereby remove the threaded article from the mold core by rotating the stripper ring.