Patent for a new and improved ice machine. This design consists in "the combination of a non-conductive casing containing a freezing tank having water supply and discharge pipes, a water-tight diaphragm supported in said casing above the bottom of said tank having downwardly-tapered hollows in its upper surface and corresponding upwardly-tapered molds in its under surface, and a refrigerating medium contained within the said casing over said diaphragm and filling the hollows in the latter" (lines 82-91).