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1920 – Edmund Copeland and Harry Edwards use iso-butane in small refrigerators. 1922 – Baltzar von Platen and Carl Munters invent the 3 fluids absorption chiller, exclusively driven by heat. 1924 – Fernand Holweck – the Holweck pump; 1926 – Albert Einstein and Leó Szilárd invent the Einstein refrigerator.
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 ).
Early refrigerator models (from 1916) had a cold compartment for ice cube trays. From the late 1920s fresh vegetables were successfully processed through freezing by the Postum Company (the forerunner of General Foods), which had acquired the technology when it bought the rights to Clarence Birdseye's successful fresh freezing methods.
Icebox used in cafés of Paris in the late 1800s. An icebox (also called a cold closet) is a compact non-mechanical refrigerator which was a common early-twentieth-century kitchen appliance before the development of safely powered refrigeration devices.
A self-contained refrigerator, with a compressor on the bottom of the cabinet was invented by Alfred Mellowes in 1916. Mellowes produced this refrigerator commercially but was bought out by William C. Durant in 1918, who started the Frigidaire Company in order to begin the first mass-production of refrigerators. [52] 1806 Coffee percolator
1920 Jungle gym The jungle gym, also known as monkey bars or climbing frame, is a piece of playground equipment made of many pieces of thin material, such as metal pipe or, in more current playgrounds, rope, on which children can climb, hang, or sit.
DOMELRE refrigerator advertisement from 1914 DOMELRE refrigerator c. 1914 ISKO advertisement from Good Housekeeping 1917. DOMELRE (an acronym of Domestic Electric Refrigerator) was one of the first domestic electrical refrigerators, invented by Frederick William Wolf Jr. (1879–1954) in 1913 and produced starting in 1914 by Wolf's Mechanical Refrigerator Company in Chicago.
4.2.3 1920s. 4.2 .4 1930s. 4.2.5 1940 ... The timeline of historic inventions is a ... James Harrison produces the world's first practical ice making machine and ...