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.
Quadrajet
The Quadrajet carburetor was actually a derivative of a variable venturi carburetor called the DOVE (diaphragm operated variable entrance) which was developed in the 1961-63 time frame at Rochester Products. Testing at the GM test facility in Arizona uncovered a hot engine percolation problem which resulted in hot start difficulties because of flooded engines. Production of the DOVE, which was underway in 1963 when the hot start problem was identified, was suspended and a crash project was initiated to fix the problem. Simultaneously a second crash project was initiated to develop a modified DOVE which became the Quadrajet. Prototype Quadrajet carburetors were in test at Rochester Products by the Fall of 1963. The DOVE hot-start problem was corrected but not in a timely enough manner; the production DOVEs were destroyed and the Quadrajet took its place.