Abstract: Complemental male and female mold sections are supported in spaced relation to define a cavity that has a shape corresponding to the shape of the article to be molded, the mold sections being relatively movable away from one another to afford ejection of a completed article. A recess in the surface of at least one of the mold sections in a wall thereof generally parallel to the direction of the mold separation. An ejector bar sized to fit within the recess, the ejector bar having a surface discontinuity that is the mirror image of a surface discontinuity to be formed on the wall of the molded article. Means for moving the ejector bar along an oblique path after the mold sections are separated so that the ejector bar performs the dual function of separating the molded article from the mold section and effecting disengagement between the surface discontinuity on the ejector bar and its mirror image on the molded part.

Abstract: Complemental male and female mold sections are supported in spaced relation to define a cavity that has a molded corresponding to the shape of the article to be molded, the mold sections being relatively movable away from one another to afford ejection of a completed article. A recess in the surface of at least one of the mold sections in a wall thereof generally parallel to the direction of the mold separation. An ejector bar sized to fit within the recess, the ejector bar having a surface discontinuity that is the mirror image of a surface discontinuity to be formed on the wall of the molded article. Means for moving the ejector bar along an oblique path after the mold sections are separated so that the ejector bar performs the dual function of separating the molded article from the mold section and effecting disengagement between the surface discontinuity on the ejector bar and its mirror image on the molded part.