What You Need to Know
Icyball is a name given to two early refrigerators, one made by Australian Sir Edward Hallstrom in 1923, and the other design patented by David Forbes Keith of Toronto. Keith's design was manufactured by American Powel Crosley Jr., who bought the rights to the device. Both devices are unusual in design in that they did not require the use of electricity for cooling. They can run for a day on a cup of kerosene, allowing rural users lacking electricity the benefits of refrigeration.
Steps
- 1.
Outback butter storage (Australian bush): Prevent rancidity in dairy products
- 2.
Prairie meat preservation (Canadian frontier): Extend shelf life of hunted game
- 3.
Rural vaccine storage (Global health applications): Temperature-sensitive medication preservation