Abstract: A coffee grinding machine is described, said machine comprising a first grinder and a second grinder cooperating with each other based on a first grinding parameter for grinding coffee beans, thus obtaining a first dose of ground coffee during a first grinding cycle, wherein the coffee grinding machine also comprises a weighing device configured to measure the weight of said first dose of coffee substantially at the end of said first grinding cycle, wherein said weight measurement of said first dose measured at the end of said first grinding cycle is used to set a second grinding parameter of a second dose, ground after the first dose during a second grinding cycle. The coffee grinding machine is configured to interrupt the grinding of said second dose during said second grinding cycle in a manner not dependent on an actual weight measurement of said second dose.

Abstract: An espresso coffee machine is described, said machine comprising: a dispensing group and a corresponding coffee boiler containing water under pressure; a heater device for heating the water in the coffee boiler; a temperature sensor for measuring the temperature of the water in the coffee boiler; a processor connected to said sensor and configured to drive said heater device so that the water in the coffee boiler is at a set reference temperature, wherein said processor comprises a feedback system; and wherein the value of said set reference temperature is varied as a function of at least one of the following parameters: (a) a first parameter which is a function of the time elapsed from an operating cycle of the machine or a frequency of use of the machine within a time interval; (b) a second parameter which is a function of the temperature of a component of the machine; and (c) a third parameter which is a function of the environment.

Abstract: A group (6) for supplying hot water in a machine for preparing and dispensing a beverage, for example espresso coffee, comprising: a water accumulation chamber (14) with an inlet (11) for receiving water and an outlet (12); and a heating path (9, 13). The heating path comprises an inlet for receiving water from the outlet (12) of the accumulation chamber (14) and an outlet (15) for dispensing heated water into a brewing chamber (16) for preparing a beverage. The heating path comprises a path bounded by a heatable outer surface (13) and an inner core (9). The inner core (9) comprises a temperature probe (8) located in proximity of the outlet (15) for dispensing heated water.

Abstract: An espresso coffee machine is described, said machine comprising a pump (1) for pumping water, a dispensing group (25) configured to cooperate with a portafilter (35), wherein said portafilter (35) is configured to support a filter (40) loaded with coffee powder, a coffee boiler (15) in fluid communication with said dispensing group (25), a water dispensing system (16, 28, 29, 30) for supplying hot water from said coffee boiler (15) to said portafilter; and a system (16, 31, 6, 33, 14) for supplying steam to said dispensing group (25) so as to perform cleaning of at least a part of said water dispensing system (16, 28, 29, 30).

Abstract: A machine for preparing and dispensing espresso coffee or the like is described, said machine comprising: a first device for measuring the mass of an amount of ground coffee to be used for preparing an espresso coffee, a second device for measuring the mass of the brewed espresso coffee, a processing device for calculating a degree of concentration corresponding to a ratio between said mass of the amount of ground coffee and said mass of the brewed espresso coffee.

Abstract: A dispensing group for an espresso coffee machine is described. The group comprises: a coffee boiler configured to contain pressurized hot water; a supply duct for feeding hot water under pressure towards a puck of coffee powder; and a filter-holder support comprising guides (30) which form at least one sliding surface for slidably supporting a filter holder, wherein said filter-holder support is rotatable between a first position for inserting the filter holder and a second dispensing position and wherein said dispensing group comprises a mechanical locking device for locking the filter-holder support in the second dispensing position.

Abstract: A machine (100) for espresso coffee (barley or other beverages) of the piston type is described. The machine comprises a cylinder (1), a piston (2) which is configured to perform a translation movement in said cylinder (1), a rod (4) having an end cooperating with said piston (2), an operating lever (5), a member (6) configured to cooperate with said rod (4) and to move said piston (2) from a first position to a second position by compressing a spring (3), and a mechanism (8, 10, 11, 12) which realizes the connection between said operating lever (5) and said member (6), wherein said mechanism is of the “hold-to-operate” type.

Abstract: A machine (100) for espresso coffee of the piston type is described. The machine comprises a cylinder (1), a piston (2) which is configured to perform a translation movement in said cylinder, a rod (4) having an end cooperating with said piston (2), an operating lever (5), a spring (3), a member (6) configured to cooperate with said rod (4) and to move said piston (2) from a first position to a second position in which said spring (3) is at least partially compressed, and an opening (71) for introducing water into said cylinder (1) configured so as to introduce water above the piston (2).

Abstract: A machine for preparing and dispensing an espresso coffee including: a water supply (1) for feeding cold water; a dispensing group (19) and a corresponding coffee boiler (18); a coffee pump (7) which receives heated water and pumps said heated water towards said coffee boiler (18); a flow meter (9) arranged between said coffee pump (7) and said coffee boiler (18) for measuring an instantaneous water flow rate, i.e., the volume of water that passes from said coffee pump to said coffee boiler per unit of time; a memory for storing at least one pressure profile, wherein said coffee pump (7) is configured to operate according to said pressure profile during coffee dispensing; and a control unit (15) which stops dispensing of coffee based on a measurement of water flow calculated from starting time of the dispensing.

Abstract: A coffee grinding machine including a first burr and a second burr. At least one of the first burr and the second burr is rotatable about an axis of rotation, the burrs being mutually cooperating to grind coffee. The machine includes a motor which rotates at least one of the burrs with respect to the other, wherein the axis of rotation of the motor does not coincide with the axis of rotation of the burrs so that the coffee which is ground by the grinders is directed to an output of a conveyor cone for use thereof.

Abstract: A group (6) for supplying hot water in a machine for preparing and dispensing a beverage, for example espresso coffee, comprising: a water accumulation chamber (14) with an inlet (11) for receiving water and an outlet (12); and a heating path (9, 13). The heating path comprises an inlet for receiving water from the outlet (12) of the accumulation chamber (14) and an outlet (15) for dispensing heated water into a brewing chamber (16) for preparing a beverage. The heating path comprises a path bounded by a heatable outer surface (13) and an inner core (9). The inner core (9) comprises a temperature probe (8) located in proximity of the outlet (15) for dispensing heated water.

Abstract: A machine for preparing and dispensing espresso coffee or the like is described, said machine comprising: a first device for measuring the mass of an amount of ground coffee to be used for preparing an espresso coffee, a second device for measuring the mass of the brewed espresso coffee, a processing device for calculating a degree of concentration corresponding to a ratio between said mass of the amount of ground coffee and said mass of the brewed espresso coffee.

Abstract: A coffee grinding machine including a first burr and a second burr. At least one of the first burr and the second burr is rotatable about an axis of rotation, the burrs being mutually cooperating to grind coffee. The machine includes a motor which rotates at least one of the burrs with respect to the other, wherein the axis of rotation of the motor does not coincide with the axis of rotation of the burrs so that the coffee which is ground by the grinders is directed to an output of a conveyor cone for use thereof.

Abstract: In an improved method and machine for espresso coffee there are provided one or more operating units (10) each of which comprises a boiler, a pump, a heating unit, a group (26) for aroma extraction and dispensing of the espresso coffee brew, including related conduits. Each unit (10) is equipped with a system for controlling and adjusting the espresso coffee brewing parameters, in particular the water pressure.

Abstract: A weighing device for an espresso coffee machine may include a weighing platform locatable in a drip tray area of the espresso coffee machine under a group of the espresso coffee machine, a control unit connected to the weighing platform, a start/stop button, a timer unit, and/or a display. The start/stop button, the timer unit, and/or the display may be connected to the control unit. The weighing platform may be configured to measure a weight of a brewed shot. The timer unit may be configured to measure a time taken to deliver the brewed shot. The display may be configured to show results of the measurements.

Abstract: An espresso coffee machine comprises a boiler and a pump for feeding hot water under pressure to one or more brew groups (1), each of which comprises a receptacle (24) for infusing a predetermined dose of ground coffee, a hot water feed pipe (38) and an outlet pipe (40). Manual operating means (30, 50) are provided at the inlet of each brew group for selectively putting the coffee powder receptacle (24) in communication with the water feed pipe (38), with the outlet pipe 40 or with both the pipes in order to preinfuse the coffee powder.

Abstract: The method involves preceding the infusion of the coffee with a stage in which the coffee powder is soaked (preinfused) with a gradual increase in the pressure. The improvement located on the delivery pipe of an espresso coffee machine, immediately upstream of the infusion group, is a pressure damping device. This allows improved imbibition by the coffee powder during the "infusion" stage, i.e. the stage that precedes the actual dispensing of the espresso coffee.