Abstract: A device dispenses dosages of a substance in powder- or paste form contained in a supply container, when a head (1) of the device is connected to the supply container. The head has a housing with an outlet opening (107) of circular cross-section and a delivery- and closure element (100). The outlet opening and the delivery- and closure element are arranged on a central lengthwise axis (15) of the head. The delivery- and closure element rotates relative to the housing about this axis and is arranged for translatory displacement relative to the housing along the axis. The delivery- and closure element is cylindrical in its fundamental contour shape. A closure portion (101) thereof closes off the outlet opening. A delivery portion (102) is adjacent to the closure portion and delivers substance that is to be dispensed. A shaft portion is adjacent to the delivery portion. A conveyor body (103) on the delivery portion conveys substance to the outlet opening.

Abstract: A device dispenses dosages of a substance in powder- or paste form contained in a supply container, when a head (1) of the device is connected to the supply container. The head has a housing with an outlet opening (107) of circular cross-section and a delivery- and closure element (100). The outlet opening and the delivery- and closure element are arranged on a central lengthwise axis (15) of the head. The delivery- and closure element rotates relative to the housing about this axis and is arranged for translatory displacement relative to the housing along the axis. The delivery- and closure element is cylindrical in its fundamental contour shape. A closure portion (101) thereof closes off the outlet opening. A delivery portion (102) is adjacent to the closure portion and delivers substance that is to be dispensed. A shaft portion is adjacent to the delivery portion. A conveyor body (103) on the delivery portion conveys substance to the outlet opening.

Abstract: A head (5) is associated with a device (1) for dispensing measured dosages of a free-flowing material. The head has housing (3) with an interior space (59) with a fill opening (57) and a discharge orifice (62). A shutter bolt (80) is arranged in the housing to open and close the discharge orifice (62) and to loosen and advance the material. The head (5) has a dispensing position, in which the shutter bolt is oriented substantially vertically and a fill position. In the dispensing position, the material is dispensed through the discharge orifice (62). In the fill position, material is filled through the fill opening (57), which is positioned laterally on the housing when the head is in the dispensing position. A rest surface (51) is diametrically opposite the fill opening, so that the head lies on its rest surface in the fill position.

Abstract: A head (5) is associated with a device (1) for dispensing measured dosages of a free-flowing material. The head has housing (3) with an interior space (59) with a fill opening (57) and a discharge orifice (62). A shutter bolt (80) is arranged in the housing to open and close the discharge orifice (62) and to loosen and advance the material. The head (5) has a dispensing position, in which the shutter bolt is oriented substantially vertically and a fill position. In the dispensing position, the material is dispensed through the discharge orifice (62). In the fill position, material is filled through the fill opening (57), which is positioned laterally on the housing when the head is in the dispensing position. A rest surface (51) is diametrically opposite the fill opening, so that the head lies on its rest surface in the fill position.

Abstract: A device (110, 10) dispenses dosages of a free-flowing substance from a source unit (70) containing the substance. The device has a base unit (120, 20) and a receiving unit (130, 30), so that the source unit can be set into, and removed from, the receiving unit. An actuator (150, 50) generates repeated bidirectional pivoting movements of the receiving unit about the base unit. A connector unit (140, 40), arranged between the base unit and the receiving unit, pivotally supports the receiving unit, providing rotational mobility about a pivoting axis. The connector unit is slidably supported with translatory mobility relative to the base unit. The actuator generates repeated bidirectional translatory movements of the base unit. In this way, the receiving unit is subjected to repeated bidirectional pivoting movements and, superimposed on the latter, repeated bidirectional translatory movements.

Abstract: A container unit for the storage and protection of laboratory substances includes a protective housing and at least one dosage-dispensing unit. The at least one dosage-dispensing unit includes a reservoir container and a dispensing head. To prepare the at least one dosage-dispensing unit for operation, the protective housing can be removed from the dosage-dispensing unit. The protective housing has a bottom part with at least one suitably shaped recess to provide a stable seat for the at least one dosage-dispensing unit, as well as a bell-shaped top. The top can be connected to the bottom part, so as to form a tightly sealed interior space. For transportation and storage purposes, the at least one dosage-dispensing unit is arranged in the interior space of the closed protective housing.

Abstract: A utensil (1) for weighing a sample (6) has fill (2) and discharge (3) positions. The utensil has a receptacle (4) with an attached neck (5). An outside surface (7) of the receptacle has a seating surface (9) that defines a plane, as well as a fill opening (13), through which the sample is placed when the utensil is in the fill position. A passage opening (15) and a discharge opening (14), at the ends of the neck, allow sample flow from the receptacle through and out of the neck when in the discharge position, with flow into the neck occurring between the fill and discharge positions. The neck has at least one support contact point in the plane of the seating surface, so that the receptacle rests on both the seating surface and the at least one support contact point when in the fill position.

Abstract: A dosage-dispensing head has a body with an end surface and an area that couples the head to a source container. The end surface has an outlet opening connected to the coupling area. The head also has a slider, constrained to a guided linear sliding movement parallel to the end surface. An aperture-setting member of the body turns about a rotary axis, orthogonal to the end surface, to actuate the slider. An orifice opening of the aperture-setting member is configured so that the outlet opening is always within the area of the orifice opening. A passage opening of the slider is between the body and the aperture-setting member. By turning the aperture-setting member, the slider moves in a linear path, linearly displacing the passage opening relative to the outlet opening and varying the aperture width of the dosage-dispensing head. This regulates the flow rate of the free-flowing dosage material.

Abstract: A receptacle for the weighing-in of free-flowing substances has a fill opening, a tubular-shaped circumference wall, and a bottom part. The bottom part is connected to the tubular-shaped circumference wall, which it tightly closes off in the direction of gravity when the weighing receptacle is in its operating position. The weighing receptacle can be set on the weighing pan of a balance and can be filled like a beaker with free-flowing substances without allowing the latter to escape therefrom. The bottom part can be opened either by an outside force acting on the weighing receptacle and/or through the influence of a solvent acting on the weighing receptacle, forming an outlet orifice in the bottom part. The weighing receptacle, otherwise tightly sealed in the direction of gravity, can be flushed out with a fluid when the outlet orifice is opened.

Abstract: A device (110, 10) dispenses dosages of a free-flowing substance from a source unit (70) containing the substance. The device has a base unit (120, 20) and a receiving unit (130, 30), so that the source unit can be set into, and removed from, the receiving unit. An actuator (150, 50) generates repeated bidirectional pivoting movements of the receiving unit about the base unit. A connector unit (140, 40), arranged between the base unit and the receiving unit, pivotally supports the receiving unit, providing rotational mobility about a pivoting axis. The connector unit is slidably supported with translatory mobility relative to the base unit. The actuator generates repeated bidirectional translatory movements of the base unit. In this way, the receiving unit is subjected to repeated bidirectional pivoting movements and, superimposed on the latter, repeated bidirectional translatory movements.

Abstract: A draft protection device for a laboratory instrument according to the invention encloses a weighing compartment that surrounds a balance pan and includes a rear wall, a front wall, two sidewalls, a top cover with at least one opening, and a floor that is delimited by border edges. The top cover is connected at least to one of the two sidewalls and/or the front wall and/or the rear wall in an arrangement where the top cover and the walls connected thereto are vertically movable together in relation to the balance pan. In addition, the vertically movable wall(s) are vertically moveable past the adjacent border edge(s) of the floor. In any vertical position of the top cover, at least one of the sidewalls is horizontally slidable relative thereto.

Abstract: A draft protection device for a laboratory instrument. The device encloses a weighing compartment that surrounds a balance pan. The draft protection device includes a rear wall, a front wall, two sidewalls, a top cover, and a floor that is delimited by border edges. The draft protection device further includes at least one guiding means that is connected to the top cover and serves to guide the movement of at least one horizontally slidable sidewall, and/or a holder means that is connected to the top cover and serves to hold the front wall in place, wherein the guiding means and/or the holder means supports the weight of the at last one sidewall and/or the front wall in such a way that the wall(s) is pushed by a biasing torque against the floor of the weighing compartment. This torque is supported by the border edge facing towards the respective wall.

Abstract: A dosage-dispensing device has a drive unit and a receiver for a dosage-dispensing unit. The drive unit has a drive shaft. The dosage-dispensing unit has a delivery orifice with a closure element that is disposed in the delivery orifice. The closure element is coupled to the drive shaft when the device is in an operating state. The closure element provides the delivery orifice with an aperture cross-section that varies between a closed position and a maximally open position. To couple the drive shaft to the closure element and to open the delivery orifice, the drive unit linearly advances towards the dosage-dispensing unit. A closure spring holds the closure element in a closed position up to the point of complete coupling. To prevent premature opening of the delivery orifice during the coupling process, the drive shaft has limited linear mobility in a direction away from the dosage-dispensing unit.

Abstract: A dispensing head for a powder or paste dosage material has a housing with an outlet opening, a bearing- and passage area, and at least one socket connected to a source container. A feeder chute is formed inside the housing. A closure shaft is in the bearing- and passage area, free to rotate about and to slide along its central longitudinal axis. The closure shaft is connected to a closure element arranged near the outlet opening. Moving the closure shaft in the axial direction controls the volume flow of the dosage material through the outlet opening. A limit stop restricts the displacement of the closure shaft along its central longitudinal axis. In the feeder chute, an opposing stop defines the closed position where the limit stop rests in direct contact against the opposing stop and the outlet opening is closed off by the closure portion of the closure element.

Abstract: A dosage-dispensing device, for substances in powder- or paste form, includes a supply container and a dosage-dispensing head that is connected or connectable to the supply container. A housing has an outlet orifice of circular cross-section and a delivery- and closure element with a closure portion serving to close off the outlet orifice. The device further has a conveying tool with at least one conveying element that serves to direct the substance to the outlet orifice, wherein the outlet orifice and the delivery- and closure element are arranged on the central lengthwise axis of the dosage-dispensing head. The conveying tool is rotatable about the central lengthwise axis in relation to the housing and the at least one conveying element is designed to move on a circular path about the central lengthwise axis.

Abstract: A dosage-dispensing device includes a drive device and a source container that can be set into the drive device, wherein a dosage-dispensing head is connected to a closure shaft which is movably constrained in the source container. The closure shaft has a coupler part configured to be coupled to and uncoupled from a drive shaft of the drive device. The source container has a first form element which is designed for form-fitting engagement with a first counterpart element formed on the drive device and serves to precisely position the coupler part in relation to the drive shaft. The source container further has a second form element which is designed for form-fitting engagement with a second counterpart element formed on the drive device and which, when in operating position, serves to precisely position the dosage-dispensing head in relation to a target container.

Abstract: A dosage-dispensing head has a body with an end surface and an area that couples the head to a source container. The end surface has an outlet opening connected to the coupling area. The head also has a slider, constrained to a guided linear sliding movement parallel to the end surface. An aperture-setting member of the body turns about a rotary axis, orthogonal to the end surface, to actuate the slider. An orifice opening of the aperture-setting member is configured so that the outlet opening is always within the area of the orifice opening. A passage opening of the slider is between the body and the aperture-setting member. By turning the aperture-setting member, the slider moves in a linear path, linearly displacing the passage opening relative to the outlet opening and varying the aperture width of the dosage-dispensing head. This regulates the flow rate of the free-flowing dosage material.

Abstract: A receptacle for the weighing-in of free-flowing substances has a fill opening, a tubular-shaped circumference wall, and a bottom part. The bottom part is connected to the tubular-shaped circumference wall, which it tightly closes off in the direction of gravity when the weighing receptacle is in its operating position. The weighing receptacle can be set on the weighing pan of a balance and can be filled like a beaker with free-flowing substances without allowing the latter to escape therefrom. The bottom part can be opened either by an outside force acting on the weighing receptacle and/or through the influence of a solvent acting on the weighing receptacle, forming an outlet orifice in the bottom part. The weighing receptacle, otherwise tightly sealed in the direction of gravity, can be flushed out with a fluid when the outlet orifice is opened.

Abstract: A draft protection device for a laboratory instrument. The device encloses a weighing compartment that surrounds a balance pan. The draft protection device includes a rear wall, a front wall, two sidewalls, a top cover, and a floor that is delimited by border edges. The draft protection device further includes at least one guiding means that is connected to the top cover and serves to guide the movement of at least one horizontally slidable sidewall, and/or a holder means that is connected to the top cover and serves to hold the front wall in place, wherein the guiding means and/or the holder means supports the weight of the at last one sidewall and/or the front wall in such a way that the wall(s) is pushed by a biasing torque against the floor of the weighing compartment. This torque is supported by the border edge facing towards the respective wall.