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.
Gottlieb Daimler
In 1885, they created a carburetor which mixed gasoline with air allowing its use as fuel. In the same year Daimler and Maybach assembled a larger version of their engine, still relatively compact, but now with a vertical cylinder of 100 cc displacement and an output of 1 hp at 600 rpm (patent DRP-28-022: "non-cooled, heat insulated engine with unregulated hot-tube ignition"). It was baptized the "Standuhr" ("grandfather clock"), because Daimler thought it resembled an old pendulum clock.