Who is the inventor of the fire hydrant in the USA?

Birdsill Holly Jr. (8 November 1820 – 27 April 1894) was a mechanical engineer and inventor of water hydraulics devices. He is known for inventing mechanical devices that improved city water systems and firefighting. He patented an improved fire hydrant that is similar to those used currently.

Holly's inventions used pressure to pump water directly into the main city water supply lines, since there were no water towers at the time for pressure from a local water supply reservoir for drinking water and fire protection. The pumps ran at various speeds according to usage. It was regulated by the pressure in the discharge main. Holly's company facilities doubled when he built a similar system for the city of Lockport water works department. He applied his water works system equipment in over two thousand cities in the United States and Canada.