Mold including side walls with locking projections

A mold defining a mold cavity for manufacture of an article having a plurality of side walls, the mold comprising

• a first end wall member including a surface, a first portion of said surface defining a mold surface and a plurality of cavities formed in said surface, said cavities being spaced outwardly from said mold surface,
• a second end wall member including a surface facing said first end wall, said second end wall member surface including a plurality of spaced apart cavities,
• at least one of said first and second end wall members being adapted to be supported for movement toward and away from the other of said first and second end wall members between a molding position and an open position,
• a plurality of mold side wall members, each of said side wall members including opposite end portions and including an inwardly facing surface comprising a mold surface for forming at least a portion of a side wall of the molded article, said side wall members being moveable from a closed position wherein first end portions of each of said side wall members engage said surface of said first end wall member and wherein opposite end portions of said side wall members engage said second end wall member and wherein said side wall members cooperate with said first and second end wall members to define a mold cavity conforming to at least a portion of the desired exterior dimensions of the articles, and an open position in which each of said side wall members is displaced laterally outwardly of its closed position and away from said end wall members to a location in spaced relation from said end wall members, said first end portions of said side wall members including projections adapted to be housed in said first end wall member cavities when said first end wall member and said side wall members are in said closed position and to prevent inward and outward movement of said side wall members, and said opposite end portions of said side wall members each including projections adapted to be housed in said second end wall member cavities when said second end wall member and said side wall members are in said closed position and to prevent inward and outward movement of said side wall members, and
• a core having a central core element, said central core element including an inclined surface and at least one movable core element supported for slideable movement along said inclined surface of said central core element, and said movable core member being supported for movement with said second mold end wall member toward and away from said first end wall.

A mold defining a mold cavity for manufacture of an article having a plurality of side walls, the mold comprising

• a first end wall member including a surface, a first portion of said surface defining a mold surface and a plurality of cavities formed in said end wall surface, and said cavities each including sloped cavity side walls, and a bottom wall, said cavity side walls converging toward said cavity bottom wall,
• a second end wall member including a surface facing said first end wall, said second end wall member surface including a plurality of cavities, said second end wall member cavities being spaced apart and each including sloped cavity side walls and a bottom wall, said cavity side walls converging toward said cavity bottom wall,
• at least one of said first and second end wall members being adapted to be supported for movement toward and away from the other of said first and second end wall members between a molding position and an open position,
• a plurality of mold side wall members, each of said side wall members including opposite end portions and including an inwardly facing surface comprising a mold surface for forming at least a portion of a side wall of the molded article, said side wall members being movable from a closed position wherein first end portions of each of said side wall members engage said surface of said first end wall member and opposite end portions of said side wall members engage said second end wall member and wherein said side wall members cooperate with said first and second end wall members to define a mold cavity conforming to at least a portion of the desired exterior dimensions of the article, and an open position in which each of said side wall members is displaced laterally outwardly of its closed position and away from said end wall members to a location in spaced relation from said end wall members, said first end portions of said side wall members including projections adapted to be housed in said first end wall member cavities when said first end wall member and said side wall members are in said closed position and to prevent inward and outward movement of said side wall members, said projections each including a first cam surface adapted to engage one of said sloped cavity side walls of said first end wall member cavities and a second cam surface adapted to engage another of said sloped cavity side walls of said first end wall member cavities, and said opposite end portions of said side wall members each including projections adapted to be housed in said second end wall member cavities when said second end wall member and said side wall members are in said closed position and to prevent inward and outward movement of said side wall members, said opposite end portion projections including a first cam surface adapted to engage one of said sloped cavity side walls of said second end wall member and a second cam surface adapted to engage another of said sloped cavity side walls of said second end wall member.