| Show new freezing badget A gadget has been i vented invented called a heat transfer se which depends upon the high thermal conductivity of aluminum rather than upon power elbow grease or machinery for cooling drinks and freezing ice cream the set col consists of a nest of aluminum cans the inner car is fluted to provide greater cooling surface for the ice which it constans con tans the two outer cans are of two sizes to provide a variety of lic iid capacity in cooling drinks the fluta fluard d can is filled with ice or other othe refrigerant placed inside one of tte otlie other r cans and the drink is paired into the apace space between the cans cooling takes place quicho and without dilution in freezing ice cream the fluted can is filled with an ice and salt mixture or avith ith dry ice and is opera operated as a plunger in and out of the ice cream mixture rix ture which has been poured int one of the other cans |
