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Inventions in the 1930s' and 1940s'

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Carson Cofer

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Inventions in the 1930s' and 1940s'

CITATIONS

JET ENGINE - DR. HANS VON OHAIN

  • Dr. Ohain is considered the designer of the first working turbo-jet engine
  • Hans received a patent for his turbo-jet in 1936 (the design not the actual engine)
  • Ohain was also an airplane designer
  • Hans was German

"Early Twentieth Century Inventors and Inventions: EnchantedLearning.com." Early Twentieth Century Inventors and Inventions: EnchantedLearning.com. N.p., 24 Mar. 2015. Web. 24 Mar. 2015. <http://www.enchantedlearning.com/inventors/1900a.shtml>.

"Inventions in The 1930s." Inventions. N.p., 24 Mar. 2015. Web. 24 Mar. 2015. <http%3A%2F%2Finventors.about.com%2Fod%2Ftimelines%2Fa%2Ftwentieth_4.htm>.

XEROGRAPHY - CHESTER CARLSON 1937

JET ENGINE - SIR FRANK WHITTLE

JET ENGINE - DR. HANS VON OHAIN & SIR FRANK WHITTLE (CO-OWNERS)

1937

  • Sir Whittle was a pilot and engineer
  • Frank was a Royal Air Force apprentice
  • Mr. Whittle became a test pilot in 1931
  • They worked in different rooms and didn't know what contribution the other was giving to the engine
  • Carlson was an American law student
  • Chester had a hard time finding investors in his new invention
  • He was turned down by the IBM and the U.S. Army Signal Corps
  • Mr. Chester Carlson was a research engineer and a patent attorney
  • He filed a patent application in April, 1939 stating "I knew I had a very big tiger by the tail"

XEROGRAPHY - CONTINUED

BALLPOINT PEN - LASZLO BIRO

1938

  • Xerox Corporation trademarked the name "Xerox"
  • The name "Xerox" was protected carefully, because the patent had not been filed yet
  • The name "Xerox" still exists today providing printers, copiers, and fax machines to their customers
  • Biro noticed the type of ink used to write newspapers dried quicker than others
  • He decided to make a pen with that same type of ink
  • He did it by putting ink in the pen and putting a ball at the end of the tip
  • As the writer wrote, the ball would rotate and produce ink
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