Coffee filter
A coffee filter is a filter that prevents the preparation of coffee that the coffee grounds to get into the brewed beverage. Today it is a container made of plastic, porcelain, or metal is used, into which a filter bag is inserted.
Coffee filters are available in many sizes. Common sizes range from child filter for the dollhouse size 801 one-cup filter 100, 2 -4- cup filter 101, the 102 and 1x4 classics to giant 1x12. The colors go from yellow, blue, pink, green, petrol, red to dark blue. The sizes 103 and 123 are no longer on the market and no more filter bags there are now produced it. There are also tea filters for tea.
History
The now common " Percolator " is entered invented by Melitta Bentz, a patent on July 8, 1908; She developed a filter paper on the basis of blotting paper. Previously partially screens or canvas used for collecting the coffee grounds. There was also filter apparatus for coffee, but without a paper filter. Already in 1783 the first coffee maker was designed with two separate containers, which held back the coffee grounds through a built-in strainer. These early coffee filter describes Johann Georg Krünitz as follows: " You put namely in a thereon made tinny, well tinned, Filtrirhut or funnel, (coffee sieve) a pure, fine canvas table-cloth or hair cloth, or because of this use by the öftern could easily be made unclean, prefer white erasing and printing paper, and takes every time new; in this one pours the coffee grounds, sets the funnel over a heated pan or pot, and gradually pour boiling water over it. "
Relatively widespread were the Arndt 's infusion of coffee machines made by Arndt from Quedlinburg in the 19th century. It was a top pot with removable metal screen. By 1887 pieces were sold by the sheet metal design over a million. Later there was this essay also made of aluminum and enamel. Beginning of the 20th century so-called exaggeration judge of metal or porcelain manufactured by other companies that also served as a sieve. Even the early mass-produced Melitta filter ran down to pointed; until 1934 they were made of aluminum or enameled sheet. Only then it was replaced by filters made of porcelain or ceramic.
There was at that time also competitors to Melitta, including a so-called Erka filter of sheet iron with bottom screen, called the "Bremer coffee pot " with an enameled sheet metal insert and a screen, the Burleya filter made of aluminum, an aha - filter with perforated pipe and several porcelain filter. Also was known the Carlsbad sieve. In the 1930s, Melitta brought the so-called quick filter on the market, which was arched and grooved so that the coffee could flow through quickly. In 1937 there were him in seven sizes, calculated for a cup to a maximum of 100 cups of coffee at once. In the 1950s, more competitive products appeared, for example, the Maestra filter in the form of a press and infuser lets - shake filter of Columbus. Early 1960s came coffee pots with integrated filter on the market.
Sonja coffee filter from the GDR
Equipment for the preparation of filter coffee, India