Chemex was invented in 1941 by the German chemist Peter Schlumbohm in America.
From the available tools: Erlenmeyer flasks, a laboratory glass funnel and a paper filter, Mr. Schlumbom built a semblance of a drip coffee maker. All the oils contained in the ground grains remained on the filter placed in the funnel, and a clear drink got into the flask.
The coffee prepared in this way turned out to be tasty, but the design turned out to be inconvenient: the flask burned hands, and before pouring the drink, you had to look for a place where you could put the wet funnel removed from the flask. Schlumb found a way out: he connected the funnel with the flask with a leather grip. Later, the grip was made of wood, only the lace remained from the leather. To prevent coffee spilling past the cup, the chemist placed a funnel with a long spout at the top of the device. Through this gutter, air is expelled, displaced from the flask by hot water.
Coffee is often brewed in a hurry, when it is not up to the exact dosage of water. Therefore, the scientist placed a protrusion on the wall of the flask - the "navel", marking half of the volume.
The first slogan of the Chemex advertising campaign was: "Brew coffee like a chemist." The advertising face of the campaign was the inventor himself, who demonstrated the work of his invention. He also installed a gilded Kemex on the front door of his Cadillac as a mascot.
The Chemex has been recognized as an outstanding piece of American design and has exhibited at the New York Museum of Modern Art since 1944.