Abstract: Coffee mill hopper assembly (1), comprising a hopper (10) with multiple compartments (18a, 18b) for storing coffee beans and at least one outlet (22) through which coffee beans may be released from the respective compartments, and a compartment selector (30) comprising a rotatable control knob for adjusting the position of a closure member (36) that cooperates with the at least one outlet (22) to provide for at least one outflow aperture that, depending on the rotational position of the closure member, selectively enables a release of coffee beans. The compartment selector (30) further comprises two toothed members that are rotationally locked to the control knob (34) and the hopper (10), respectively, wherein at least one of said toothed members (50a, 50b) is movably arranged and spring-biased to force the teeth (54a, 54b) of the toothed members towards each other in a meshing relationship.

Abstract: Coffee mill hopper assembly (1), comprising a hopper (10) with multiple compartments (18a, 18b) for storing coffee beans and at least one outlet (22) through which coffee beans may be released from the respective compartments, and a compartment selector (30) comprising a rotatable control knob for adjusting the position of a closure member (36) that cooperates with the at least one outlet (22) to provide for at least one outflow aperture that, depending on the rotational position of the closure member, selectively enables a release of coffee beans. The compartment selector (30) further comprises two toothed members that are rotationally locked to the control knob (34) and the hopper (10), respectively, wherein at least one of said toothed members (50a, 50b) is movably arranged and spring-biased to force the teeth (54a, 54b) of the toothed members towards each other in a meshing relationship.

Abstract: A device for performing a process of treating a liquid including a detachably arranged liquid treating unit and a basic part which is suitable for receiving and accommodating the liquid treating unit. The liquid treating unit has an air restriction for taking in air to be used in the liquid treating processes, wherein the air restriction includes a pin and a hole for receiving the pin. The pin is rotatably arranged in the hole, and means are provided for causing a rotation of the pin in case of a movement of the liquid treating unit relative to the liquid treating device.

Abstract: A device for performing a process of treating a liquid such as milk during which air is supplied to the liquid comprises a detachably arranged liquid treating unit and a basic part (3) which is suitable for receiving and accommodating the liquid treating unit. The liquid treating unit has an air restriction for taking in air to be used in the liquid treating processes, wherein the air restriction comprises a pin (11) and a hole for receiving the pin (11). In particular, the pin (11) is rotatably arranged in the hole, wherein means (15, 16, 17) are provided for causing a rotation of the pin (11) in case of a movement of the liquid treating unit in and/or out of the liquid treating device. In this way, an automated pin rotation mechanism is realized, whereby any blockage of the air restriction may be destroyed, and a reliable functioning of the air restriction is ensured.