cona - Coffee pot (3) - Cona - Metal, Glass

Cona coffee maker, the iconic design coffee maker of the 1950s.
Height 38 cm
The coffee maker includes its heat source. It is complete.
The Cona coffee maker, also called a siphon coffee maker or a depressor coffee maker, is an emblematic device in the world of coffee, renowned for its elegant design and its unique operating mode, halfway between chemistry and craftsmanship.
The principle rests on the physics of pressures:

Water is heated in the lower vessel, which creates steam and makes the water rise into the upper vessel.
Ground coffee is mixed in this upper vessel, where the infusion takes place.
When the heat source is removed, cooling creates a depression in the lower vessel, drawing the infused coffee through a filter. The residues remain in the upper vessel.

The Cona coffee maker was invented by British chemist Robert Napier in the early 1900s. He filed a patent in 1910 for an innovative coffee-preparation system based on the siphon or depression principle. The Cona brand, which takes its name from a contraction of "Conical", was founded to commercialize this device.

What distinguishes the Cona coffee maker from other siphon coffee makers is its refined design and the emphasis on material quality, notably the use of borosilicate glass. Over the decades, Cona has become a symbol of luxury and elegance, prized by coffee enthusiasts and collectors. It is still manufactured in England, continuing a craft tradition and offering a unique coffee-preparation experience.