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Parpart is credited as Florence P. Layman on the other patent which lists her as inventor, a 1914 patent for an electrical refrigerator, [24] as well as two other patents filed by her husband for which she was listed as assignee. [25] [26] Patent filings show that the Laymans moved several times between 1900 and 1919.
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.
A large domestic refrigerator stands as tall as a person and may be about one metre (3 ft 3 in) wide with a capacity of 0.6 m 3 (21 cu ft). Refrigerators and freezers may be free standing, or built into a kitchen. The refrigerator allows the modern household to keep food fresh for longer than before.
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
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 ).
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 wide 6×12, 6×17, and 6×24 cm frames are produced by special-purpose panoramic cameras. Most of these cameras use lenses intended for large format cameras for simplicity of construction. Cameras using 120 film will often combine the numbers of the frame size in the name e.g. Pentax 6×7 (6×7), Fuji 617 (6×17), and many 645 s (6×4.5).
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