james harrison developed a ice machine,
at the beginning of the 19th century england started to use ice boxes. people with wagons would come around and drop of a peace of ice in your icebox and if you were lucky they would give you shavings and that's how you would make a frezzie
1950s is when they started to change the model of the refrigerator or more less update it.
prior to the refrigerator coming out they built the freezer and refrigerator together
since the 1940 s they have been modeled like that. the more popular they got and were sold the more they can up with the models we are use to today.