In 1931 he set up his own company in Cheltenham making aircraft equipment: for this purpose he leased a factory and bought Arle Court in Cheltenham.[1] Dowty invented the first internally sprung aircraft wheel (used on the Gloster Gladiator)[1] and by the time World War II had broken out the company was known as Dowty Aviation and was making the hydraulic systems in planes in Britain, Canada and the United States.[1] His equipment was also used in the Concorde supersonic airliners.[2]
Dowty retarder
He also invented the "Dowty retarder" for use in railway classification yards, a hydraulic device that regulates the speed of rail cars as they roll down an inclined track. The devices are built for a specified speed, set at the factory. If the rail car is below the set speed, the device offers no resistance. If the car speed is at or greater than the speed setting, an internal valve is activated to provide a resistance to the wheel, thus slowing the car. This keeps cars rolling within a relatively narrow range of speeds.[3]
Honours
In 1956 he was knighted for his services to the industry.[1]