Hammond, John Hays, 1888-1965

Variant names
Dates:
Birth 1888-04-13
Death 1965-02-12

Biographical notes:

Inventor and scientist.

From the description of John Hays Hammond papers, 1908-1965 (bulk 1912-1953). (Unknown). WorldCat record id: 79449289

Inventor; B.S., Sheffield Scientific School, Yale, 1910; pioneer in systems radio control of moving objects (torpedoes, ships, etc.); president Radio Engineering Co. of N.Y., Hammond Research Corp. of Mass.; inventor of improved methods of phonographic reproduction, other inventions relating to radio telephony and telegraphy, radar, pipe organ mechanisms, radio and phonograph reproduction; applied for over 800 patents in U.S. and Europe.

From the description of John Hays Hammond, Jr. papers, 1912-1963 (inclusive). (Unknown). WorldCat record id: 702166562

From the guide to the John Hays Hammond, Jr. papers, 1912-1963, (Manuscripts and Archives)

Biographical Note

1888, Apr. 13 Born, San Francisco, Calif. 1905 Patented two-cycle scavenger engine 1910 Graduated, Yale University, New Haven, Conn. 1911 Established Hammond Radio Research Laboratory, Gloucester, Mass. 1912 Invented "electronic dog," a photosensitive homing device Performed research on intermediate frequency United States delegate to the International Radio-Telegraphic Conference, London, England 1914 Demonstrated high-speed radio control boat to United States Army Invented proximity fuse for torpedoes Invented thermite incendiary bomb Natalia (yacht) completed 120-mile trip controlled by Hammond's radio and gyroscopic system 1916 1918 Developed continuous wave superheterodyne receiver using intermediate frequency Worked on radio-controlled submerged torpedo 1919 Doctor of Science, George Washington University, Washington, D.C. 1921 Researched, developed, and developed a frequency modulation (FM) system 1922 1923 Developed a secure telephone communication system 1925 1926 Developed unicontrol superheterodyne 1927 United States delegate to International Radio Conference, Washington, D.C. 1943 Developed a variable pitch propeller for ships 1950 Invented "Telespot," a system for secure televsion trnasmission of classified data 1959 Awarded Elliot Cresson Medal, Franklin Institute, Philadelphia, Pa. 1952 Developed dynamic accentuator for music amplification and reproduction 1965, Feb. 12 Died, Gloucester, Mass.

From the guide to the John Hays Hammond Papers, 1908-1965, (bulk 1912-1953), (Manuscript Division Library of Congress)

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Subjects:

  • Electronic musical instruments
  • Electron tubes
  • Engineering
  • Inertial navigation systems
  • Radio
  • Radio frequency modulation
  • Torpedoes
  • World War, 1914-1918

Occupations:

  • Inventors
  • Scientists

Places:

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