In an apparatus for molding composite articles from two materials, including a stationary first material mold half;
- a second material mold half disposed spaced from and in parallel facing relation to said first material mold half and movable linearly toward and away therefrom;
- a mold block disposed between said first and second material mold halves, movable linearly in response to movement of said second material mold half and rotatable about an axis between first and second material mold halves and parallel to their faces;
- and, two material mold means attached to said mold block and adapted to form, respectively and in response to sequential linear movements of said second material mold half and said mold block and rotary movement of said mold block, a mold closed position including:
- a. a first material-receiving mold cavity with the face of said two material mold means in contact with the face of said first material mold half;
- and,
- b. a two material-receiving mold cavity with the face of said two material mold means in contact with the face of said second material mold half;
- the improvement comprising:
- (1) mold core means movably attached to said mold block and extending through said two material mold means generally perpendicular to its face;
- (2) said mold core means having:
- (a) an extended position with mold core end portions disposed within parts of said first material-receiving mold cavity to block the receipt of the first material into said parts;
- and,
- (b) a retracted position with said mold core end portions at least partially retracted from said extended position and disposed with said first material within said two material-receiving mold cavity to allow the receipt of the second material into said parts and into the remainder of said two material-receiving mold cavity;
- and,
- (3) indexing means on said mold block for moving said mold core means from said extended position to said retracted position in response to rotation of said mold block and linear movement of said second material mold half and said mold block to the mold closed position.