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: 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: The invention relates to improvements in a beverage brewing machine. In accordance with the invention, the brewing machine is able to brew a larger single cup of beverage without affecting the quality of the beverage. The brewing machine includes an upper brewing chamber, and a lower second chamber below the upper chamber and filter means between the upper and lower chambers. To increase the amount of beverage brewed, the size of the lower chamber is increased by increasing the cross-sectional area of the lower chamber. However, the area of the upper opening of the lower chamber is not increased. Specifically, a flange extends inwardly from the top of the wall of the lower chamber to thereby cover a portion of the upper end of the bore of the lower chamber.

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: A beverage brewing apparatus according to the present invention is provided with a brewing cylinder. A pressurizing piston is slidably fitted in the brewing cylinder. The pressurizing piston, in conjunction with a coffee filter tape, defines a brewing chamber inside the brewing cylinder. The pressurizing piston compresses coffee powder fed into the brewing chamber. When the powder is pressurized by the pressurizing piston in the brewing chamber, extremely hot pressurized hot water is poured into the brewing chamber by a hot-water supply mechanism. As a result, a coffee solution percolated in the brewing chamber runs out therefrom through the filter tape.

Abstract: A beverage extracting and dispensing machine for use with flattened round cartridges, which contain a brewable product, such as ground coffee, freeze-dried coffee, tea, broth and the like. The cartridges have permeable upper and lower walls and a substantially cylindrical sidewall.A cartridge may be slid to a brewing station in which it is laterally embraced by opposite clamping jaws. During its movement to the brewing station a new cartridge spreads the jaws apart and pushes an old cartridge away from the brewing station. The spreading apart of the jaws starts an automatic brewing cycle at the beginning of which a presser plate is lowered onto the cartridge and presses it with a tight seal on an underlying fixed support while the cartridge is laterally clamped by the jaws.

Abstract: A coffee machine is disclosed which is of the type including a horizontal guide track and a brewing unit mounted for reciprocal movement on the guide track between predefined rest and brewing positions. The machine has first and second slides mounted for sliding movement on the track, a straining unit mounted to the side for movement therewith, a brewing chamber formed integrally with a cylinder that extends above it and a plunger which is axially movable into and out of the cylinder when it is in the brewing position in order to force brewing water into the brewing chamber from the cylinder. The brewing chamber has an open bottom and is mounted to the second slide means in a position above the straining unit for movement therewith. The brewing chamber can be moved into a predefined loading position in alignment with the straining unit into the brewing position together with the straining unit, and into an emptying position in which it is horizontally displaced with respect to the straining unit.

Abstract: This percolator is directed to preserve the flavor and aroma of coffee and comprises for this purpose a filter engaging piston and another piston for compressing and discharging the coffee grounds, both pistons being disposed on a same horizontal axis in mutual registration in a common cylinder and driven independently of each other by separate hydraulic pistons.