Tesla's electro-mechanical oscillator, steam-powered electric generator patented by Nikola Tesla in 1893.
Data
Burimi
Cochrane, C. H. (1896). The wonders of modern mechanism. A résumé of recent progress in mechanical, physical, and engineering science. Philadelphia: J.B. Lippincott company. Page 185.
The author died in 1940, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 80 years or fewer.