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William Young produced the machine as the "Johnson Patent Ice-Cream Freezer" in 1848. [8] Hand-cranked machines' ice and salt mixture must be replenished to make a batch of ice cream. Usually, rock salt is used. The salt causes the ice to melt and lowers the temperature in the process, due to freezing point depression. The temperature at which ...
Augustus Jackson (April 16, 1808 – January 11, 1852) [1] was an African American businessperson, chef, ice cream maker, and confectioner from Philadelphia, Pennsylvania. [2] He is credited as inventing a modern method of manufacturing ice cream and for new flavor development. [ 3 ]
Ice cream was originally made using very intensive labor and it often took one individual hours to make. Johnson had invented the hand cranked ice cream churn as a way to make ice cream faster and easier than by hand. [4] The patent number for the Artificial Freezer is US3254A. [5] It was patented on September 9, 1843, and antedated on July 29 ...
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A familiar example of this is the use of an ice/rock-salt mixture to freeze ice cream. Adding salt lowers the freezing temperature of water, lowering the minimum temperature attainable with only ice. Mixed solvent cooling baths (% by volume) [ 1 ]
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