Amos Dolbear

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Amos Dolbear, 1880

Amos Emerson Dolbear (born November 10, 1837 Norwich , Connecticut , † February 23, 1910 ) was an American professor and inventor. He is considered to be one of the inventors of the telephone and wireless communication. His inventions were the subject of lawsuits against, among others, Alexander Graham Bell and Guglielmo Marconi, the radio pioneer and Nobel Prize winner. The processes were unsuccessful in both cases, even though he had experimentally proven the discoveries many years earlier and in some cases also applied for a patent.

Life

Amos Dolbear graduated from Ohio Wesleyan University in Delaware , Ohio . During his student days he dealt with telephony. During this time he developed the first usable telephone set, 11 years before Bell patented his set. In 1881 Dolbear lost a case against the American Bell Telephone Company in the United States Supreme Court . He could not prove that he had developed a telephone set with a permanent magnet as early as 1865. From 1868 to 1874, Dolbear was a professor at the University of Kentucky . From 1874 he was a physics professor at the private Tufts University in Boston , Massachusetts . In 1877, Dolbear was elected to the American Academy of Arts and Sciences . In 1882 he began to deal with wireless communication. He uses the earth to transmit electrical waves. At first he used a Morse code key, later a carbon microphone with speech. He managed to cover several kilometers wirelessly. On October 5, 1886, he received a patent for a method in the field of wireless communication. In 1899 he sold the patent to the New England Wireless Telegraph and Telephone Company , which was bringing Guglielmo Marconi to court for patent infringement in the field of wireless communications. In 1901 the lawsuit was rejected. The Dolbear and Marconi procedures would be too different. Marconi used radio waves (electromagnetic waves) to transmit messages.

Web links

Commons : Amos Dolbear  - collection of images, videos and audio files

Individual evidence

  1. ↑ Cornell University Law School Dolbear et al. v. AMERICAN BELL TEL. Co.1 MOLECULAR TEL. CO. et al. v. SAME. 2 AMERICAN BELL TEL. Co. et al. v. MOLECULAR TEL. Co. et al. 3 CLAY COMMERCIAL TEL. CO. et al. v. AMERICAN BELL TEL. Co. et al. PEOPLE'S TEL. Co. et al. v. SAME. 4 OVERLAND TEL. CO. et al. v. SAME.
  2. ^ Dolbear, Amos Emerson, 1837-1910. ( Memento of the original from January 4, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. In: Tufts Digital Library @1@ 2Template: Webachiv / IABot / dl.tufts.edu
  3. ↑ Book of Members 1780 – present, Chapter D. (PDF; 575 kB) In: American Academy of Arts and Sciences (amacad.org). Retrieved February 24, 2018 .
  4. ↑ US Patent US350299 of October 5, 1886
  5. ^ Suit Against Marconi Dismissed. In: New-York Daily Tribune. March 13, 1901, p. 7.
personal data
SURNAME Dolbear, Amos
ALTERNATIVE NAMES Dolbear, Amos Emerson (full name)
BRIEF DESCRIPTION American telephony pioneer and inventor
DATE OF BIRTH November 10, 1837
PLACE OF BIRTH Norwich , Connecticut
DATE OF DEATH February 23, 1910