John Hays Hammond Jr.
John Hays Hammond Jr. (April 13, 1888 – February 12, 1965) was an American inventor known as "The Father of Radio Control". Hammond's pioneering developments in electronic remote control are the foundation for all modern radio remote control devices, including modern missile guidance systems, unmanned aerial vehicles (UAVs), and the unmanned combat aerial vehicle (UCAVs).
Also recorded as John Hays Hammond · Jack Hammond
John Hays Hammond Jr.

Wikimedia Commons · Public domain
- Name
- John Hays Hammond Jr.
- Born
- April 13, 1888
- Birthplace
- San Francisco, California, U.S.
- Died
- 12 February 1965
- Place of death
- New York City, U.S.
- Occupation
- inventor
- Awards
- IEEE Medal of Honor (1963)
- Spouse
- Irene E.
- Education
- Yale University (B.S., 1910)
- Nationality
- United States
- Honours
- IEEE Medal of Honor · National Inventors Hall of Fame · Elliott Cresson Medal
- Languages
- English
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Documentary summary
John Hays Hammond Jr. (April 13, 1888 – February 12, 1965) was an American inventor known as "The Father of Radio Control". Hammond's pioneering developments in electronic remote control are the foundation for all modern radio remote control devices, including modern missile guidance systems, unmanned aerial vehicles (UAVs), and the unmanned combat aerial vehicle (UCAVs).
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wikidata · Q6238419 · wikipedia · John Hays Hammond Jr.
In this article
Biography
Biography
He was the son of mining engineer John Hays Hammond Sr.
John Hays Hammond Jr. Studied at Yale University, Yale School of Engineering and Applied Science and Sheffield Scientific School. The recorded working language is English. Work by John Hays Hammond Jr. Is recorded in the collections of Museum of Modern Art. Distinctions recorded are IEEE Medal of Honor, National Inventors Hall of Fame and Elliott Cresson Medal.

John Hays Hammond Jr., Hammond jr hammond sr
Wikimedia Commons
Key facts
Key facts
• Name — John Hays Hammond Jr. • Born — April 13, 1888 • Birthplace — San Francisco, California, U.S. • Died — 12 February 1965 • Place of death — New York City, U.S. • Occupation — inventor • Awards — IEEE Medal of Honor (1963) • Spouse — Irene E. Fenton Reynolds • Parents — John Hays Hammond Sr Natalie Harris Hammond • Relatives — Natalie Hays Hammond (sister) Richard Pindle Hammond (brother) • Education — Yale University (B.S., 1910) • Illustration — John Hays Hammond Jr. and Sr., 1922 John Hays Hammond Jr. (April 13, 1888 – February 12, 1965) was an American inventor known as "The Father of Radio Control". Hammond's pioneering developments in electronic remote control are the foundation for all modern radio remote control devices, including modern missile guidance systems, unmanned aerial vehicles (UAVs), and the unmanned combat aerial vehicle (UCAVs). Of Hammond's many individual inventions, the inventions which have seen the most significant application are the variable pitch or controlled pitch propellers and single dial radio tuning. He was the son of mining engineer John Hays Hammond Sr.
Biography
Biography
Born in San Francisco, California, he and his family moved to South Africa and the Transvaal in 1893. His father was active as a mining engineer for Cecil Rhodes' mines in South Africa. In 1898, the family moved to England, where young Hammond fell in love with castles and life in earlier times. The family returned to the United States at the turn of the 20th century. At the age of twelve, Hammond accompanied his father on a business trip to Thomas Edison’s laboratory in West Orange, New Jersey. Upon being introduced to Edison, the boy asked so many questions that the inventor gave him a personal tour of the complex and assumed the role of mentor. The two would remain in contact for the rest of Edison’s life. While studying at the Sheffield Scientific School of Yale University, Hammond became interested in the new study of radio waves, and he was taken under the wing of Alexander Graham Bell. Bell also became his mentor, and the two would remain close friends until Bell’s death. After graduation from Yale in 1910, Hammond took a job in the U.S. Patent Office; he had learned from Edison that "inventing had to be a money-making proposition, where better to learn what fields were up-and-coming than in the Patent Office?" After he became an authority on the patent process, he founded the Hammond Radio Research Laboratory on his father's estate in Gloucester, Massachusetts. In total, he is credited with more than 800 foreign and domestic patents on more than 400 inventions (the exact number of inventions is vague due to how credit was listed on the forms), mostly in the fields of radio control and naval weaponry. He served on the Board of Directors of RCA and a listing of his professional colleagues and society friends reads like a Who’s Who of the rich and famous. Aside from his inherited wealth, his inventions brought Hammond an additional fortune. Between the years 1926 and 1929, he built a castle (including a drawbridge) which became his home, laboratory, and a showplace for his collection of Roman, medieval, and Renaissance artifacts. Hammond was also interested in the mechanism and workings of the pipe organ, and had a huge organ installed in the castle's Great Hall. Famous organists, including Richard Ellsasser and Virgil Fox, performed and made commercial recordings on this instrument, unfortunately no longer in operating condition (2015). Overlooking Gloucester Harbor in the North Shore region of Massachusetts, Hammond Castle is now a museum which offers self-guided tours throughout half the year and hosts fundraising events on a regular basis. Hammond was awarded the Edward Longstreth Medal from The Franklin Institute in Philadelphia, Pennsylvania in 1959.
Personal life
Personal life
Hammond married Gloucester resident, artist, and devout spiritualist Irene Fenton in 1925. In addition to his marriage, Hammond was part of a homosexual/pansexual circle surrounding A. Piatt Andrew, actor Leslie Buswell, and interior designer Henry Davis Sleeper, referring to the B.A.S.H. acronym often referenced in Gloucester culture (B.A.S.H. standing for Buswell, Andrew, Sleeper, and Hammond).
In popular culture
In popular culture
Hammond Castle was investigated by The Atlantic Paranormal Society (TAPS) in 2012 for paranormal activity, and this was shown on the TV show Ghost Hunters. The castle was also featured in season 1 of the PBS reality-game show Fetch! with Ruff Ruffman.
Inventions
Inventions
Examples of Hammond's 400+ U.S. patents: 10/21/1919 – System of Teledynamic Control (1,275,741) 5/20/1922 – System for Radio Control of Moving Bodies (1,420,258) 11/6/1928 – Submarine sound transmission (1,500,243) 3/18/1929 – Multi-channel radio system (1,717,662) 12/29/1931 – Secret Radio Communication (1,838,762) 5/19/1931 – Paravane Torpedo (1,806,346) 12/14/1936 – Gaseous Detector of Radiant Energy (1,610,371) 5/27/1941 – Variable Pitch Propeller Control (2,243,095) 7/11/1944 – Radio Alarm System (2,343,499)
Identity
Identity
John Hays Hammond Jr. Is recorded as having studied at Yale University, Yale School of Engineering and Applied Science and Sheffield Scientific School. The identifiers under which John Hays Hammond Jr. May be traced in institutional catalogues.
Life and career
Dated record
Life and career
The full dated record · 2 entries
1888
John Hays Hammond Jr. born at San Francisco.
1965
John Hays Hammond Jr. died at New York City.
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
San Francisco.
Birth place
New York City.
Death place
References
Citations
References
Each reference names the institution holding it, so a reader may go to the document itself.
reference work
Wikidata, structured authority record Q6238419: John Hays Hammond Jr.Wikimedia Foundation
Secondary witnessreference work
Secondary witness
People, houses and institutions
Knowledge graph
People, houses and institutions
Teachers, collaborators, publishers and institutions recorded against this person, each on a stated basis.
Studied at
1- Yale UniversityOrganisation
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Further particulars
Held on the record
Further particulars
Open the remaining particulars
The authorities additionally record the headings John Hays Hammond and Jack Hammond. His recorded language was English. He was the child of John Hays Hammond Sr. Formation and teaching. Connected to 1 other published record in the VALÉORINE Encyclopedia.
Identity and origins
John Hays Hammond Jr. Studied at Yale University, Yale School of Engineering and Applied Science and Sheffield Scientific School
Recognition and collections
John Hays Hammond Jr. Received IEEE Medal of Honor, National Inventors Hall of Fame and Elliott Cresson Medal
Work by John Hays Hammond Jr. Is
Museum of Modern Art
Within the Encyclopedia
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
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