Abstract: An injection mold assembly including a plurality of locking bars for securing the mold sidewalls in a mold closed position. The locking bars project from one mold plate and are positioned outwardly of the mold sidewalls and include ends adapted to engage the other mold plate when the mold is closed and to function as wedges preventing outward movement of the mold sidewalls.

Abstract: A mold defining a mold cavity for manufacture of an article, the mold comprising a plurality of mold side wall members, each of the 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. The side wall members are moveable from a closed position wherein the 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 the side wall members is displaced laterally outwardly of its closed position and away from the end wall members to a location in spaced relation from the end wall members.