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George Mortimer Pullman (March 3, 1831 – October 19, 1897) was an American engineer and industrialist. He designed and manufactured the Pullman sleeping car and ...
George Pullman (1831–1897), U.S ... Raymond Scott (1908–1994), U.S. – inventor and developer of electronic music technology; ... Timeline of historic inventions;
The sleeping car did not become commercially practical until 1857 when George Pullman invented the Pullman sleeping car. [82] 1839 Vulcanized rubber. Vulcanization refers to a specific curing process of rubber involving heat and the addition of sulfur or other equivalent curatives. It is a chemical process in which polymer molecules are linked ...
Workers leave the Pullman Palace Car Works in 1893. The Pullman Company, [1] founded by George Pullman, was a manufacturer of railroad cars in the mid-to-late 19th century through the first half of the 20th century, during the boom of railroads in the United States.
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
The Pullman attendants, regardless of their true name, were traditionally referred to as "George" by the travelers, the name of the company's founder, George Pullman. The Pullman company was the largest employer of African Americans in the United States. [8] Railway porters fought for political recognition and were eventually unionized.
The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War; Timeline of United States inventions (after ...
approximately 1893: The selenium phototube invention allows the conversion of brightness values into electrical signals. The principle is applied in wirephoto and television technology for a short time. Selenium is used in light meters for the next 50 years.