Cona coffee maker, c 1950.
© Science Museum / Science & Society Picture Library
Table model no III. Table model no III. The Cona company first launched its coffee makers in 1910. Made from glas and based on a vacuum principle, they profesed to make 'perfect' coffee. The glas structure allows infusion to take place at the correct temperature while also preventing contamination from other materials that may affect the coffee's flavour.