Carburetor
The first carburetor was invented by Samuel Morey in 1826. The first person to patent a carburetor for use in a petroleum engine was Siegfried Marcus with his 6 July 1872 patent for a device which mixes fuel with air.
Leonard S. Hobbs
Leonard S. (Luke) Hobbs (1896–1977) was an American aeronautical engineer who started in 1920 with the Army Air Service at McCook Field in Dayton, Ohio and later worked for Stromberg Motor Devices Corporation. He was born in Carbon County, Wyoming. He developed the first float-type carburetor for aircraft engines that was capable of providing normal operation during inverted flight. In 1927 he became a research engineer at the Pratt & Whitney Aircraft Company and by 1944 was vice president of engineering for parent company United Aircraft Corporation. He won the prestigious 1952 Collier Trophy for "designing and producing the P&W J57 turbojet engine". In 1956 was elected vice chairman of United Aircraft, retiring in 1958 but remaining on the company's board of directors until 1968.