Jeronimo de Ayanz y Beaumont

Jeronimo de Ayanz y Beaumont (1553 to 1613) was a Spanish soldier, painter, astronomer, musician and inventor. He pioneered the use and design of the steam engine, as well as mining ventilation systems, improved scientific instrumentation, windmills and new types of furnaces for metallurgical, industrial, military and even domestic operations. In 1606 he patented a steam-powered water pump for draining mines. He also invented a diving bell, patented an immersion suit tested before the court of Philip III on 2 August 1602, and designed a submarine.