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Kelvinator ad from 1920 Kelvinator refrigerator, c. 1926. The enterprise was established on September 18, 1914, in Detroit, Michigan, United States, by engineer Nathaniel B. Wales, who introduced his idea for a practical electric refrigeration unit for the home to Edmund Copeland and Arnold Goss.
The Einstein–Szilard or Einstein refrigerator is an absorption refrigerator which has no moving parts, operates at constant pressure, and requires only a heat source to operate. It was jointly invented in 1926 by Albert Einstein and his former student Leó Szilárd , who patented it in the U.S. on November 11, 1930 ( U.S. patent 1,781,541 ).
Electrical refrigerators were introduced in 1918, and by 1925, Leonard was building one out of every five refrigerators produced in the United States, which amounted to 1000 refrigerators per day. [1] Leonard merged with Kelvinator in 1926. The Leonard brand of appliances continued to be sold exclusively through Leonard dealers, as well as ...
Food in a refrigerator with its door open. A refrigerator, commonly shortened to fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so that its inside is cooled to a temperature below the room temperature. [1]
1920 newspaper ad featuring Wales' Kelvinator refrigerator. Nathaniel Brackett Wales (11 July 1883, Braintree, Massachusetts – November 15, 1974) was an American inventor credited with early patents on refrigerators, washers, vacuum cleaners, and co-inventor with his son of the proximity detonator used in bombs in World War II.
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.