ter is placed, and in a and any oil that leaks into the chamber is centrifu- few minutes the water will form a layer of ice over gally separated from the heavier sulphurous acid, losses, because of the pressure that must be main- the drum. One of the photographs shows the ice- forming an annular… … with the weighted compressor, in is not available, a ventilator is Making frost. Coating the dram with Ice. the smaller machines the drums furnished, consisting of a fan at- The ice-making machine and the brine tank in which slabs of Ice are formed. are charged with anhydrous sul- tached to the…
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