When was the American entrepreneur and engineer died based on who's patent modern trains rely upon a fail-safe air brake system?
Railway air brake A railway air brake is a railway brake power braking system with compressed air as the operating medium. Modern trains rely upon a fail-safe air brake system that is based upon a design patented by George Westinghouse on March 5, 1868. The Westinghouse Air Brake Company (WABCO) was subsequently organized to manufacture and sell Westinghouse's invention. In various forms, it has been nearly universally adopted.
Charles Walter Hart Charles Walter Hart (July 6,1872–March 14,1937) was an American mechanical engineer, inventor, and businessman. Together with Charles Henry Parr, he founded a company that produced a commercially successful line of gasoline-powered tractors. After being forced out of his company in 1917, he went on to work on further development of the tractor and later, started an oil refinery.