Abstract: A coffee brewing apparatus has a first cylinder, having a top opening and a bottom opening. A vertically movable second cylinder containing ground coffee, having a top opening and a bottom opening, is disposed below the first cylinder coaxially therewith. A vertically movable upwardly urged plunger, having a top head and a bottom head, is disposed through the bottom opening of the first cylinder, coaxially therewith, in a manner that the top head is sealingly and slidingly fitted in the first cylinder and the bottom head is adapted to be sealingly and slidingly fitted in the second cylinder through the top opening thereof. The plunger has a hot water exit channel vertically therethrough and a pressure-operated hot water release valve disposed in the channel.

Abstract: An espresso coffee machine wherein a conveyor disk, having a number of seats, each for receiving a respective wafer, is rotated in steps about an axis to successively feed the seats through a loading station for loading the wafers, an unloading station for unloading the used wafers, and a work station where each seat is interposed between a hot-water boiler and an outlet element for a coffee beverage, and is engaged by the boiler by virtue of pressurized cold water supplied to the boiler.

Abstract: A brewing head of an espresso maker includes a housing, and a lower brewing head section fixedly attached to the housing. The lower brewing head section includes a pressure sealed brewing chamber, and a lifting piston forming a floor of the brewing chamber. The lifting piston has apertures therethrough. A water inlet is located beneath the floor of the brewing chamber. An apparatus for moving the lifting piston is provided. The brewing head further includes an upper brewing head section movable relative to the lower brewing head section. The upper brewing head section includes an upper brewing head housing, and a fill shaft. The fill shaft is in communication with the brewing chamber when the upper brewing head section is moved to a fill position. The upper brewing head section further includes a brewing piston positioned over the brewing chamber when the upper brewing head section is moved to a brewing position.

Abstract: An automatic espresso and cappuccino machine comprises a number of individual filter units movable with respect to a coffee filling station, a coffee dispensing station, a filter cleaning station and a filter washing station. Ground coffee is introduced into each filter unit at the coffee filling station and then the filter units are selectively rotated by a filter indexing device to the coffee dispensing station where they are moved into engagement with a water nozzle which first compacts the coffee and then directs heated water through the ground coffee to form espresso. An emulisifier is also located at the coffee dispensing station, which is effective to produce foamed milk for combination with the espresso to form cappuccino.

Abstract: The invention relates to a method of preparing beverages such as coffee, tea, soup or the like through extraction, in which the product to be extracted is accommodated in a chamber and is confined by a piston, whereafter liquid is supplied to the chamber via a liquid supply duct provided in the piston, the product to be extracted being extracted and the extract being discharged from the chamber. During the supply of liquid the flow rate is measured and, depending on these measurements, the supply of liquid is regulated in such a manner that for a specified desired total amount of extract the time of contact between the liquid and the product to be extracted has a predetermined desired duration.The invention further relates to an apparatus for carrying out the method, this apparatus comprising chambers of equal dimensions.

Abstract: A perforated plate extraction column in which a liquid phase is contacted by a gas phase and in which foaming tends to prevent necessary separation of the two phases, in which a physical foam-breaking means is placed above each perforated plate.

Abstract: An automatic apparatus for the preparation of one or more servings of expresso coffee comprises a rotating board provided with through cylindrical holes which in a first position of rotation of the board are fed with a predetermined amount of fresh coffee grounds, which is also pressed, and by the rotation of the board are brought to an infusion position and lastly to a position of discharge of the coffee grounds.

Abstract: A dispenser includes a cartridge moving mechanism and a hopper. The cartridge moving mechanism moves between a cartridge receiving position and an extracting position and between the extracting position and a cartridge exhaust position. The hopper has a dropping unit and is disposed immediately above the cartridge receiving position. The dropping unit serves to drop a cartridge consisting of a fluid-impermeable outer frame and a filters. A space defined between the filters and the outer frame and contains a powdery or granular material to be extracted. An extracting mechanism of the dispenser has an upper extracting head, and a lower extracting head including an extracting tank. The upper extracting head is provided above the extracting position and has an extracting chamber. The extracting tank is provided below the extracting position to face the upper extracting head, and another extracting chamber is formed in the extracting tank.

Abstract: Green coffee is decaffeinated in a continuous economical process without organic solvent. Caffeine is extracted from a solution of green coffee solubles with supercritical carbon dioxide in a novel extractor under specified conditions.

Abstract: An apparatus for making coffee includes a housing which bounds a catch chamber provided with a discharge through which any liquid present in the catch chamber is discharged into a receptacle, so that a rotary body which is mounted in the catch chamber for rotation about an axis rotates in air. The rotary body includes an internal space which is subdivided by a partition into two compartments which communicate with one another at their outer ends. Liquid is discharged from one of the compartments into the catch chamber through a port situated at the inner end of such compartment, while hot liquid is introduced into the inner end of the other compartment and flows therethrough and the quantity of ground coffee contained therein to extract flavor from the latter. The rate of discharge is determined solely by the rate of replenishment, since the two compartments behave as connected vessels or a water trap.

Abstract: An assembly directed to the preparation or production of individual servings of a predetermined, variable quantity beverage, wherein the assembly is primarily intended for the production of Expresso Coffee or like beverage. The assembly may be manually operated and includes the directing of liquid from a liquid storage facility under pressure to a liquid dispersement receptacle. One or more filter receptacles having the beverage forming ingredient therein are brought into sealing engagement with the liquid receiving receptacle for the purpose of forcing the liquid into direct contact with the beverage ingredients resulting in the formation of the intended beverage and its delivery to a pre-positioned serving receptacle in aligned relation to the subject filter receptacle.