Abstract: A plurality of carafes on a coffee machine primarily for restaurant and institution use can be filled selectively with decaffeinated or normal coffee via a distributor between a brewing chamber and the outlets to the carafes. The microprocessor controller operates the device selecting the coffee for delivery to the brewing chamber in response to signals received from the carafes if they are placed at respective stations on the machine so that a decaffeinated carafe at any station will receive only decaf and a normal carafe will receive only normal coffee regardless of the station at which it is placed.

Abstract: An automatic coffee machine, in particular for the preparation of individual cups and small pots, is equipped with an instantaneous water heater (1) for the preparation of hot water, an installation for the feeding of coffee powder and a brewing device incorporating a brewing chamber (17) consisting of a stationary tube section (11) with vertical axis (12) and two locking pieces (15, 16). There is an axial drive (33) for the motion of the upper locking piece (16) in the direction of the axis (12) 0f the tube section (11) and a radial drive (31) for the radial motion in relation to this axis (12). The upper locking piece (16) carries the hot-water inlet into the brewing chamber (17), it consists of two parts, i.e. a supporting piece (67) and an at least partly conical centering piece (68). The centering piece (68) is equipped with only one gasket (28) for the sealing of the brewing chamber (17) on the one hand and the sealing of the hot water inlet on the other hand.

Abstract: A coffee percolator having a brewing chamber wherein at least one of the boundary wall surfaces of the brewing chambr is adjustable transversely of the direction of flow of the hot water through the coffee powder so that the thickness of the coffee powder bed in the direction of flow may be kept substantially constant for the coffee charges of varying size. The coffee percolator may include a brewing sieve having a support sieve with openings of a size exceeding the dimensions of the ground coffee particles and a fine sieve supported on the side of said support sieve facing towards the brewing chamber and having openings of a size smaller than the dimensions of the ground coffee particles.

Abstract: A beverage is prepared employing a package containing at least one beverage ingredient, e.g. roast and ground coffee. The package (10;200) is located at a brewing station, the package is pierced by a tool (49;248) to form an outlet opening (38;202) in the package, an aqueous medium, e.g. hot water, is introduced into the package, the aqueous medium is allowed to commingle with the beverage ingredient, and the beverage so formed is collected through the outlet formed in the package. The piercing tool is employed both to form the outlet opening, and to fold the material (117;204) surrounding the opening out of the path of the beverage which subsequently emerges through the outlet opening.

Abstract: An automatic household-type machine of a kind which comprises a percolation chamber having an outlet conduit for dispensing the coffee percolate, a heated water storage boiler, a pump having its delivery side communicated with the chamber and suction side communicated with the boiler, and an electronic control device linked operatively to a timer for activating the pump for pre-set time periods, further comprises a heater plate carried on a machine base and a manually operated two-way valve mounted on the free end of the outlet conduit from the percolation chamber. Connected to respective outlets of the valve are a first conduit for dispensing espresso coffee and a second conduit extending cantilever-fashion over the plate and being adapted to dispense German coffee percolate.

Abstract: Tea leaves are steamed out under pressure higher than atmospheric by means of steam generated from the moisture contained in the tea leaves for tea manufacturing. A round disk with a net on the discharge side of a rotary firing pot is horizontally shifted with a guide driven by air pressure or hydraulic cylinder, or vertically moved together with the horizontal shifting mechanism as a body. A raw tea leaves feeding cylinder is inclined from the top of the opening/closing cover to contact the central opening section of the round disk with the net, and the raw tea leaves are easily fed by means of a tilted charging chute. This tilted charging chute facilitates opening and closing of the disk with the net on the discharge side of the rotary firing pot to effectively make it airtight and further to effect the feeding of raw tea leaves.

Abstract: A device for loading, pressing, feeding and disposing off the ground coffee in automatic espresso coffee machines, which comprises crank mechanisms connected to the coffee feeding carriage and the coffee pressing piston, respectively; motors for driving the crank mechanisms; cam means associated with the crank mechanism actuating motors for positioning the coffee feeding carriage in the coffee loading and disposal station and in the coffee infusion station, and for moving the pressing piston in the coffee pressing and disposal position and in the rest position; and control means for controlling the crank mechanism actuating motors.

Abstract: Apparatus for infusing an infusible substance which comprises:(a) first means for containing the infusible substance during infusion;(b) second means for containing the infusible substance between it and the first means during the infusion; and(c) activation means for raising and lowering the first and second means.The activation means preferably comprises:(i) first rack means for lowering the first means;(ii) second rack means for raising the second means; and(iii) single drive means for activating the first and second rack means.

Abstract: A beverage is prepared employing a package (10) having a compartment (111) containing at least one beverage ingredient, e.g. roast and ground coffee. The package is located at a brewing station, an aqueous medium, e.g. hot water, is introduced into the package, the aqueous medium is allowed to commingle with the beverage ingredient, and the beverage so formed is collected through an outlet (38) formed in the package. The compartment of the package is sealed by a covering material (119) which determines one dimension of at least one opening (115) acting to filter the beverage passing out of the compartment to the outlet of the package. The package is also clamped at the brewing station prior to the introduction of the aqueous medium in a manner which maintains said one dimension during the subsequent formation and collection of the beverage.

Abstract: A system for preventing the escape of moisture from a beverage preparing device, such as a coffee brew basket, into apparatus for delivering a dry particulate food product, such as a coffee grinder, to the device during the beverage preparing process. The system includes a support plate containing a rectangular opening. A brew basket can be removably suspended from the plate under the opening. An elongated rod, rotatable about its longitudinal axis, is connected across the plate so as to extend across an edge of the opening. A flap is fixedly attached to the rod for tilting as the rod rotates between a closed position in which the opening is sealed against moisture penetration and a downwardly extending position such that the food product can be delivered through the opening to the basket. A spring biases the rod to an angular position of rotation such that the flap is normally closed to seal the opening.

Abstract: A beverage is prepared employing a package containing at least one beverage ingredient, e.g. roast and ground coffee. The package (10;200) is located at a brewing station, the package is pierced by a tool (49;248) to form an outlet opening (38;202) in the package, an aqueous medium, e.g. hot water, is introduced into the package, the aqueous medium is allowed to commingle with the beverage ingredient, and the beverage so formed is collected through the outlet formed in the package. The piercing tool is employed both to form the outlet opening, and to fold the material (117;204) surrounding the opening out of the path of the beverage which subsequently emerges through the outlet opening.

Abstract: A beverage brewing machine which has upper and lower brewing chambers which are moveable relative to each other so as to clamp a strip-shaped filter therebetween during the brewing process and the chambers can be separated so as to allow the filter strip to be removed from the brewing chamber and the beverage residual wiped therefrom after which the filter strip is returned to the brewing chambers which are then resealed for the next cycle. A hold down grid engages the top surface of the filter to hold it down as a piston moves in the lower chamber upwardly to force air through the filter to agitate the beverage. When the piston reaches top dead center, the hold down grid is lifted. When the piston passes the opening the brewed coffee is poured. A loose connection is provided between the connecting rod for the piston and the driving crank arm so that the piston remains longer at the top and bottom of its stroke.

Abstract: The automatic machine for the production of coffee and infusions according to this invention comprises a filter-carrying element having on the base a movable filter for the filtration of the infusion of coffee, into which element there can be sealingly inserted a piston equipped with means for the delivery of hot water under pressure supplied from a metering unit, in which the piston is carried by a transverse bar extending between two parallel side members of the machine and equipped with a pair of connecting rods adjacent to the lateral members and associated with elastic means for exerting tension on the piston and connected eccentrically to respective discs which can be rotatably actuated by a geared motor, there being present means for friction blocking of the piston in a lowered position in the filter-carrying element, these means determining the irreversible transmission of the movement from the motor to the piston, means being also present for the automatic expulsion of the exhausted infusion substanc

Abstract: A cylindrical container has an open top, and the bottom is formed by a piston reciprocable in the container. A filter is laterally and vertically movable between an initial position to open the top of the container and a subsequent position to close the top of the container. Supply means above the container mixes ground coffee and hot water and includes one or more partitions to cause the mixture to flow vertically downward into the open top of the container with hardly any turbulence so that the ground coffee floats on the hot water. The filter is then moved to close off the top of the container, and the piston is moved upwardly to press the water through a layer of coffee disposed at the underside of the filter and thence through the filter to an outlet.

Abstract: The invention is concerned with a machine for preparing a beverage employing a package (10;200) containing at least one beverage ingredient, e.g. roast and ground coffee. The machine has a point of entry (16;209) for the package into the machine, a brewing station within the machine at which the package is supplied with an aqueous medium to produce the required beverage, and drive means (24;217, 221, 222) which engage the package at the point of entry and convey the package to the brewing station. The drive means includes a coupling between a drive part (243;226) and a part (30;252) associated with the package, the coupling enabling the drive to the package to be engaged and disengaged and allowing the part associated with the package to move independently of the drive part.

Abstract: An "espresso" coffee making machine for household use incorporates an electronic device linked operatively to a timer, a selector operative to dispense one or two doses of the espresso coffee, and a control knob for controlling the amount of water per coffee dose to be dispensed.An electric coffee grinder and a feed pump for feeding water into the boiler are activated by the electronic device to operate for predetermined time periods clocked by the timer.

Abstract: The single driven part of the apparatus is an axially movable scalding cylinder, in which a piston is located which is free to move in the axial direction. This piston is positioned by a guide bush or moved with the scalding cylinder. A supporting block comprises, furthermore, an abutment for the disk of the piston. A second piston is arranged stationary or may be moved also axially against the force of a spring against a further supporting block. By the movement of the scalding cylinder ground coffee which has been inserted between the pistons is compressed and drinkable coffee is produced by feeding hot water thereto.

Abstract: Automatic regular coffee vending machine including ground coffee powders or coffee beans of different varieties stored in different chambers, separately. When one or more varieties are selected by selection-key operation, coffee powder or powders of the selected variety or varieties are supplied by a predetermined amount into a coffee extractor together with hot water of a predetermined amount, so that a cup of straight coffee of the selected variety or a cup of blended coffee of the selected varieties can be served from the machine. The coffee concentration can be selected by operation of concentration-selection keys, and coffee with cream and/or sugar also can be obtained by cream and/or sugar selection keys which are controlled by a memory storing data on the various supply amounts. When coffee beans are stored in the chambers, the selected amounts of beans are ground in a coffee mill before delivery to the coffee extractor.

Abstract: The automatic coffee-making machine according to the invention comprises a filter carrier having on its base a movable filter for filtering the coffee infusion, there being introducible into the carrier in sealing-tight manner a piston having means for delivering pressurized hot water supplied by a metering unit, the piston being operated for its movements of descent, introduction into the filter carrier element, compression of the coffee powder, raising and lateral rotation by a rod having resilient piston-pulling means and connected to a rotating disc actuated by a geared motor, means being provided to support and guide the piston in its movement, the latter means providing an irreversible transmission of the movement from the motor to the piston, automatic means being provided to expel the spent coffee powder and to supply fresh powder to the filter carrier.

Abstract: The invention provides a piston-cyclinder-assembly for a coffee brewing apparatus, the assembly comprising a cylindric cavity serving as a brewing chamber, a closing member mounted on the cylindric cavity at one end thereof, and a piston which can be displaced into and retracted from the brewing chamber at the other end. The piston is equipped with internal brewing water channels leading to the front face of the piston and connected to a brewing water connector. The closing member has plate-like shape and is fixed against movement in axial direction of the brewing chamber but is pivotally mounted near the cylindric cavity. To drive the piston into the cavity and to retract it, and to pivot the closing member, first and second stepping motors, respectively, are provided which are operatively connected to a control unit. Another embodiment is provided with a normal electric motor to drive the piston and with a pressure sensor.

Abstract: A beverage brewing machine which has upper and lower brewing chambers which are movable relative to each other so as to clamp a strip-shaped filter therebetween during the brewing process and the chambers can be separated so as to allow the filter strip to be removed from the brewing chamber and the beverage residual wiped therefrom after which the filter strip is returned to the brewing chambers which are then resealed for the next cycle. A hold down grid engages the top surface of the filter to hold down as a piston moves in the lower chamber upwardly to force air through the filter to agitate the beverage. When the piston reaches top dead center, the hold down grid is lifted. When the piston passes the opening the brewed coffee is poured.

Abstract: An apparatus for preparing "espresso" coffee in a household environment comprises a powder coffee metering dispenser assembly, a hot water dispenser assembly, an emptying device for the cup-like percolator movable along guide-forming means extending below said powder coffee metering dispenser assembly, said hot water dispenser assembly and said emptying device.

Abstract: Apparatus for precision metering of selected amounts of fungible or granular material such as coffee consisting of a frame, a hopper supported by the frame having a large upper storage area and communicating with a small lower vertically oriented exiting trough, horizontal sliding plate extending below a forward lip of the exiting trough, the horizontal sliding plate having an edge contacting the extended rear lip and for moving the plate to traverse the rear lip during metering of the granular material, receptacle securably attached on an under side of the horizontal sliding plate, and the horizontal sliding plate cooperating with the rear lip during traverse of the horizontal sliding plate for filling the receptacle means by the rear lip causing the metering of the granular material on the sliding plate to dump into the receptacle. The forward lip is adjustable for controlling the magnitude of metering of the granular material.

Abstract: Described is a coffee percolator having a coffee meal supply container mounted at an upper portion thereof, in which heating of the coffee meal supply by the heat of the coffee percolator and the resultant loss of volatile aroma substances are avoided. This is accomplished by providing a cooling system effective to cool the bottom of the supply container. In a preferred embodiment the supply container is cooled by means of air aspirated by a fan through an air flow path extending along the bottom of the supply container and subsequently returned to the environmental atmosphere.

Abstract: A machine, for the automatic preparation of a beverage which is extracted from a product contained in a cartridge, has at least one extraction mechanism and at least one assembly having a plurality of magazines for housing cartridges containing product to be extracted and for supplying those cartridges to a conveyor which supplies the cartridges from a magazine to a distributor which then supplies the cartridges to the extraction mechanism and which also removes cartridges from the extraction mechanism for discarding the used cartridge.

Abstract: A beverage brewing apparatus for use in vending machines has an open top and open bottom cylinder that is vertically movably supported by a frame on rods. A piston is also vertically movably supported by the rods and is normally pushed upwardly by coil springs disposed surrounding the rods. Bias springs are disposed between the frame and cylinder to push the cylinder dowardly whereby the sealing situation between the cylinder and brewing cavity is assured during progress of the brewing operation within the apparatus.

Abstract: The present invention relates to an apparatus for nonpressurized infusion brewing of a beverage, and especially tea brewed freshly from tea leaves, primarily adapted for use in vending machines. The apparatus includes a novel brew assembly comprising a frame, a carriage reciprocable along the frame between a brew position and discharge position. The carriage is driven between the brew position and discharge position by a motor driven crank pin mounted on a crank arm in which the crank pin is slidable in a transverse slot formed in the carriage. The carriage carries a brew cavity having an open top and bottom with externally extending guide pins mounted on opposed side walls. The brew cavity is mounted within the carriage and is normally biased towards a lower position.

Abstract: The domestic appliance using a hydrophilic powder comprises a chamber (4) for dispensing the powder and means for transferring the powder to a container (20).Said means comprise a turbine (7) to form a current of air sufficient to propel all the powder from the dispensing chamber (4) to the container (20).Use more particularly for constructing a domestic appliance adapted to prepare a drink from a soluble powder such as coffee and a liquid.

Abstract: Apparatus for making an infusion, e.g. tea or coffee, and having a piston and cylinder for blowing air through the infusion and then drawing it through a filter base, the cylinder having a flange which is slidably received between arms of a support, the flange having in its opposed side faces grooves which receive inward facing flanges on the arms and there being a disconnectable connection between the piston connecting rod and its operating crank so that, when said connection is disconnected, the cylinder can be mounted on and removed from the apparatus.

Abstract: Described is a coffee percolator of the type having a scalding chamber and a coffee filter, a wall of said coffee filter substantially closing said scalding chamber at its lower portion. The wall extends from an upper peripheral rim in a conical configuration with an angle of about 8.degree. to 35.degree. to the horizontal towards a substantially centrally located outlet and comprises a support sieve and a sheet of stainless steel disposed on the upper side of the support sieve facing towards the scalding chamber. The sheet has a thickness of about 20 to 80 .mu.m and is provided with a pattern of etched micro-perforations having a diameter of about 30 to 100 .mu.m at the surface facing towards the scalding chamber. The support sieve has a thickness of about 0.5 to 3 mm and is formed with a pattern of holes having a diameter of about 1 to 5 mm.

Abstract: Described is a coffee percolator comprising a brewing section disposed within a housing and provided with coffee meal filling means. The housing includes a cover plate and at least two coffee meal supply containers projecting through the cover plate to the exterior of the housing and formed with discharge openings positioned above the filling means. Also described is a coffee percolator having at least two coffee meal supply containers projecting upwards through the cover plate, the supply containers each having identically configured sidewalls and a bottom connected to the sidewall by fastener means permitting the bottom to be secured at two different positions in mirror-reflection alignment.

Abstract: A combination tea dispenser and brewer wherein a variety of different teas are provided in individual dispensers which are located in a position to dispense tea into an area where the dispensed tea is contacted by boiling water to brew the same. The brewed tea falls into a pot on the dispenser and is ready to be served.

Abstract: The invention provides a coffee machine, with a housing, a fresh water supply reservoir mounted therein, a heating means adapted to heat the fresh water and a feeding pump to supply the heated fresh water to a brewing chamber under pressure. The brewing chamber comprises a closure means and an inlet for coffee powder as well as an outlet for coffee. If appropriate, an installation for pushing out and removing, respectively, the leached-out coffee powder out of the brewing chamber and from the brewing chamber, respectively, may be provided. All parts of the apparatus which are subjected to contamination by the coffee powder or by the coffee, namely the brewing chamber, the closure element, the coffee powder inlet, the coffee outlet and eventually the installation for pushing-out and removing the coffee powder, are combined to a modular unit, which is removably inserted into the housing of the apparatus.

Abstract: A beverage brewing apparatus suitable for use in a vending machine has a frame supporting a vertically movable open-bottom cylinder and piston slidably disposed within the cylinder. The reciprocal movement of the piston within the cylinder is controlled by the operation of a cam element operated by a motor through a cam shaft, with this operation of the cam applying a vertical force to push the piston and also applying horizontal force tending to offset the axial center lines between the piston and cylinder. Therefore, the apparatus is provided with means for preventing the piston from lateral horizontal movement relative to the cylinder to insure improved sealing between the piston and cylinder.

Abstract: A brewing apparatus includes a vertically movable cylinder with an open top and bottom, a piston mounted for reciprocation down into such cylinder and a heated liquid supply device for discharging brewing liquid into the open top of the cylinder. A brewing cavity is horizontally reciprocal beneath the cylinder between a brewing position and a discharge position. A ground beverage material supply delivers material into the brewing cavity when the cavity is disposed at a material supplying position located intermediate the brewing position and the discharge position. A seal element which is disposed on the outer peripheral surface of the piston to obtain sealing between the piston and cylinder comprises a ring portion affixed to the piston and the flange portion extending radially outwardly from the end portion of the ring portion. A cut out space is formed on the inner surface of the flange portion which connects with the ring portion.

Abstract: Beverage brewing apparatus suitable for use in a vending machine has a frame supporting a vertically movable open bottom cylinder and a piston slidably disposed within the cylinder. A brewing cavity is disposed beneath the cylinder to enable reciprocation horizontally between a brewing position and a rest position. The horizontal movement of the cavity is controlled through a cable running around a pulley rotatably supported on the frame. The pulley is provided with a mechanism for adjusting the position thereof to determine the brewing position and rest position of the cavity to ensure secure engagement between the cylinder and brewing cavity.

Abstract: Described is a coffee percolator having a reservoir provided with means for sensing the filling level of coffee meal therein. The filling level sensing means comprises an electro-optical sensor secured to the outer side of the reservoir across a corner formed by portions of a sidewall and a bottom wall. An emitter and a receiver of said electro-optical sensor are disposed along an optical axis extending through the interior of the reservoir substantially diagonally across the corner, the sidewall and the bottom wall being optically transparent at least at the locations whereat the optical axis passes therethrough.

Abstract: Described is a coffee percolator the brewing cycle of which is controlled by control means. This coffee percolator is provided with further control means effective to initiate and to control a hot flushing operation for preheating those parts of the coffee percolator which come into contact with the coffee separately from the brewing cycle proper.

Abstract: A beverage brewing apparatus suitable for use in a vending machine has a frame supporting a vertically movable open-bottom cylinder and a piston slidably disposed within the cylinder. A base assembly is reciprocal horizontally between a brewing position and rest position. Actuation of various components is controlled by a motor through a cam shaft. The downward movement of the piston is controlled by the operation of a cam element, but this operation of the cam applying vertical force to push the piston also applies a horizontal force tending to offset the axial center lines between the piston and cylinder. Therefore means for preventing the piston from lateral horizontal movement relative to the cylinder insures improved sealing between the piston and cylinder.

Abstract: In a manually operated hot drink dispensing machine for use with a pre-manufactured throwaway container, in order to use containers of two different sizes, that is, pre-manufactured for percolated and other beverages; a dispensing unit including a cylinder forming a sleeve for the containers during use, an inner cylinder forming two chambers suitable for forming a housing for the corresponding containers, and a water supply head equipped with several ports for hot water and a separate port for cold water. The cover of the containers is provided with two raised annular elements, suitable for forming a chamber communicating with the port for the cold water when a container, inserted into the cylinder, is pressed against the head, so as to permit the introduction into the container of only hot water, and into the container of hot and cold water.

Abstract: An apparatus is provided for centrifuging liquid from a wet material. The apparatus includes a centrifugal drum and a stripper member positioned adjacent the centrifugal drum. The front side of the centrifugal drum is open and is arranged to be closed by a cover. The stripper is firmly connected to a driving shaft when the centrifugal drum is driven by means of a sliding clutch. A brake is provided for slowing down the centrifugal drum. During the centrifuging procedure, the centrifugal drum and the stripper rotate with the same number of revolutions and the cover is closed. After the centrifuging procedure, the centrifugal drum is slowed down with respect to the stripper and the cover is opened so that the still running stripper removes and ejects the residues.

Abstract: In a coffee percolator having a brewing section, different operating positions are controlled by a control piston driven by a motor by the action of suitable control means. The control piston moves through a coffee meal supply opening and a coffee-grounds flushing opening, both of which are provided in said brewing section, for selectively or contemporaneously opening and closing these openings in the different operating positions. In a brewing position the control piston closes both openings, so that an overpressure is generated within the brewing section. Subsequent to the brewing operation this overpressure is relieved in a relief position by opening the flushing opening while said supply opening remains closed. The relief position is succeeded by a flushing position, in which the supply opening is likewise opened, so that the exhausted coffee-grounds can be flushed out.

Abstract: The brewing apparatus includes a vertically movable cylinder with an open top and bottom, a piston mounted for reciprocation down into such cylinder and a heated liquid supply discharging brewing liquid into the open top of the cylinder. A brewing cavity is horizontally reciprocable beneath the cylinder between a brewing position and a rest position. A ground beverage material supply delivers material into the brewing cavity when the cavity is disposed at a material supplying position located intermediate the brewing position and the rest position. A second heated liquid supply discharges liquid into the brewing cavity while the cavity is disposed at the material supplying position with an electromagnetic valve controlling the second liquid supply operation. The reciprocably mounted piston may be provided with an air pressure release to release compressed air from within the vertically movable cylinder.

Abstract: A semi-automatic beverage brewing apparatus for brewing a cup to a pot of beverage such as coffee. The apparatus passes a selected quantity of water after heating the water, through a preselected quantity of beverage making material such as freshly ground coffee to brew the coffee. The beverage brewing apparatus includes a filter, a beverage making material holding device, a beverage making material quantity selector and transfer system for automatically measuring and placing a selected quantity of beverage making material from the material holding device into the filter, a liquid holding system, a liquid heater, a liquid quantity selector, heating and transfer system for automatically measuring, heating and placing the selected quantity of liquid on the beverage making material, and an outlet for passing the brewed liquid after it passes through the beverage making material and filter into a cup or pot.

Abstract: An apparatus for making one or more consumption units of coffee, comprising coffee container, means for metering a portion of coffee at a metering station immediately prior to use, means for compacting the coffee in a compacting space at a compacting station, as well as means for transferring the coffee from the metering station to the compacting station and furthermore means for transferring the compacted coffee to an extraction unit connected to a hot water source. Extraction is effected more efficiently by compacting the coffee at a pressure on the coffee of about 1,000 kg/cm.sup.2.

Abstract: A coffee machine comprises a boiling chamber, two pistons adjustable independently of each other and adapted to be pushed into the boiling chamber from opposite sides and defining between them a boiling space to hold and boil a predetermined quantity of powdered coffee, a source of boiling water having a through-flow heater and a boiling water pressure generator, and a hydraulic actuating device for the pistons having a pressurized medium circuit including a pressurized medium pump. The boiling water pressure generator is constituted by a media converter, of which one side is incorporated into the water supply to the boiling chamber while its other side is connectible to the pressurized medium pump.

Abstract: The invention relates to a coffee percolating machine comprising a housing including coffee meal and hot water supply means, an outlet opening for the coffee brew, and a discharge opening for the exhausted coffee meal, at least one brewing cylinder having an open inlet end and mounted in the housing for rotation about an axis perpendicular to its longitudinal axis from a coffee meal charging position to a brewing position and on to a discharge position for discharging the exhausted coffee meal, and a piston disposed in the brewing cylinder for axial displacement therein in response to the position assumed thereby.

Abstract: This invention concerns about an automatic coffee boiler, especially one that can feed automatically a certain amount of coffee powder and boil the coffee powder with a certain quantity of water vapor previously fixed. Its main characteristics is to use two time adjusters in a controlled circuit to respectively set a period of time for activating a coffee feeding device and an electric heater in water tank, and also to use a sequence controlling circuit which can automatically activate in sequence the coffee powder feeder, the heater in the water tank and a music alarm. Through the above-mentioned devices, coffee powder can be automatically fed out and boiled with vapor to become liquid coffee ready for drinking.One of the other specialities of this invention is that an electromagnetic valve set at the outlet of the coffee feeding device is able to act simultaneously with said coffee feeding device.

Abstract: A process for the continuous extraction of roasted coffee or tea, which comprises introducing dry finely ground coffee or tea at a charging station in the form of a bed with a thickness of from 0.5 to 15 cm and displacing the bed along a closed circuit up to a discharging station by way of at least one extraction station where a stream of extraction liquid is passed through the bed while a pressure gradient of the liquid on the bed is maintained.

Abstract: The device relates to the distribution under pressure of the hot water coming from a tank, boiler or the like in a coffee-machine and the delivering of the water itself to the chamber where the coffee powder is contained, as well as the filtering of the infusion obtained by the passing of the hot water through the coffee powder as far as the coming out of the infusion itself. The device allows to avoid the clogging of the inlet holes of the hot water into the chamber containing the coffee powder and the clogging or the variation of the holes of the usual filters through which the infusion passes so that the total passing surface of the infusion for filtering remains constant in the time.