Abstract: An apparatus for cleaning molds for making optical lenses includes seven stations arranged in a circular array with a rotatably mounted central hub in the middle of them. Seven radial arms extend from the central hub, one for each station, and a workpiece holder depends from the radially outermost end of each arm and holds the molds as they travel from station to station. A drive motor lifts and lowers the central hub and hence the molds, an index motor rotates the molds from station to station, and an oscillation motor oscillates the workpiece holders when the molds are immersed in a cleaning solution or rinse water. The rinse water is filtered and circulated continuously. After a final rinse, the rinse water is drained slowly so that the surface tension of the water removes all water spots and the cleaned molds are delivered to a discharge station. The entire process is microprocessor controlled.

Abstract: A cell for casting resinous ophthalmic lenses including an annular gasket of resilient material and a pair of meniscus glass mold halves between which a lens may be cast. The mold halves are loaded into one side of the gasket annulus, one fully entered and seated against an inwardly directed locating flange and the other peripherally snapped into an annular receiving groove spaced away from the flange.