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Florence Wilhelmina [1] Parpart Layman (January 1873 [2] - December 3, 1930 [3]), most commonly known by her maiden name of Florence Parpart, was an American inventor known primarily for her patents for an industrial sweeping machine [4] and electrical refrigerator.
Frederick McKinley Jones (May 17, 1893 – February 21, 1961) was an American inventor, entrepreneur, engineer, winner of the National Medal of Technology, and an inductee of the National Inventors Hall of Fame. [1] Jones innovated mobile refrigeration technology.
He soon made himself known with a variety of useful mechanical inventions [1] and eventually had twenty-one American and nineteen English patents.Sometimes known as the father of the refrigerator. [2] He was elected a Fellow of the American Academy of Arts and Sciences in 1813 and a member of the American Philosophical Society in 1819. [3] [4]
Amanda Minnie Douglas (1831–1916) – writer and inventor (portable folding mosquito net frame) Charles Dow (1851–1902), U.S. – Dow Jones Industrial Average Mulalo Doyoyo (1970–2024), South Africa/U.S. – Cenocell – cementless concrete
Standard J-1 providing joyrides. Although produced in large numbers, its four-cylinder Hall-Scott A-7a engine was unreliable and vibrated badly. While JN-4 production outnumbered J-1s by about two to one in June 1918, fatalities in JN-4s versus J-1s numbered about seven to one due to the limited use of the J-1s.
Henry J. Gaisman was born in 1869 in Memphis, Tennessee, [2] the youngest of four children. His father, Jacques Gaisman (né Geissmann), was an immigrant originally from Dornach, a French village in the Alsace region bordering Germany near Mulhouse, who fled worsening political pressures and immigrated to New Orleans in 1852.
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).
This prototype cooling device invented by Baltzar von Platen and Carl Munters in 1922 became the basis for a lot of refrigerators produced in Sweden and elsewhere. Baltzar von Platen (24 February 1898 – 29 April 1984) was a Swedish engineer and inventor.
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