Abstract: A structural part of a gas turbine plant is cooled by branching off a partial mass air stream, after being compressed by a compressor of the gas turbine plant, from a main mass air stream. The cooling partial mass air stream is ducted in a closed duct to the structural part to be cooled. At the same time, the partial mass air stream undergoes, independently of the main mass air stream, additional compression which is carried out by utilizing the rotational energy of a turbomachine shaft of the gas turbine plant. The novel gas turbine plant therefore is provided with a secondary compressor. The invention is suitable particularly for use in stationary gas turbine plants.

Abstract: A heat-shield component with a cooling-fluid return, a hot-gas wall to be cooled, an inlet duct for conducting a cooling fluid and an outlet duct for returning the cooling fluid. The inlet duct is directed towards the hot-gas wall and widens in a direction of the hot-gas wall. Furthermore, the invention relates to a heat-shield configuration which lines a component directing a hot gas, in particular a combustion chamber of a gas-turbine plant. The heat-shield configuration and has a plurality of the heat-shield components.

Abstract: A flow damper for cleaning stations, in particular for cleaning pipettor tips, is described, a cleaning liquid being introduced into the cleaning station through a pipettor needle and flowing around the pipettor tip before it is conducted away out of the cleaning station. In order to avoid wetting of the isolation surfaces of the pipettor needle and a level detector electrode, if provided, there are provided, according to the invention, in the cleaning station at least one screen having a preferably central entry orifice for the jet of liquid emerging from the pipettor needle and a device for diverting the liquid flow in the direction essentially opposite that of the entering jet of liquid. Furthermore, a plurality of exit orifices, preferably arranged radially around the entry orifice, for the diverted liquid flow are formed in the at least one screen.

Abstract: A hinge for an article of furniture has a mount which is attachable to a wall of the article. A hinge unit including a hinge arm and, optionally, a support for the arm is releasably connectible to the mount. To this end, the hinge unit is provided with a shaft which is receivable in a complementary recess of the mount. The hinge unit is further provided with a resilient tongue, and the tongue has a groove which cooperates with a projection on the mount to lock the hinge unit to the mount by snap action. A lever projects at an angle from both sides of the hinge unit, and the free end of each lever carries an arm which extends towards the tongue. An inclined protuberance is provided on either side of the tongue and each lever arm abuts a respective protuberance. The arrangement is such that, when the levers are urged towards one another, the lever arms cooperate with the protuberances to disengage the groove in the tongue from the projection on the mount.

Abstract: In the photometer arrangement comprising a light source, lens system with beam splitter, measurement cell, scattered light trap and photodetector, said parts being arranged in this sequence, the scattered light trap comprises a honeycomb. The ratio between the free cross-section of its individual channels and the length thereof is from 1:40 to 1:300.

Abstract: An incubation apparatus for microtiter plates includes an heating chamber and a incubation chamber. The heating chamber has a controllable hot air generator over which are arranged air guide devices for equalizing and distributing a stream of hot air to the microtiter plates. Air return devices are provided for collecting and returning hot air to the hot air generator. The heating chamber can be closed by a gate, and incubation chamber is divided by shelves into a plurality of compartments for receiving the microtiter plates. It is possible to close each compartment with a gate, and the side walls of the compartments are provided with heating devices. Furthermore, the incubation apparatus is provided with a gripping and transporting device having a working platform that is vertically displaceable and having a horizontally displaceable gripping arm.

Abstract: In the reaction vessel in the form of a cell for optical investigations of small quantities of liquid, the floor (4) of the reaction vessel exhibits a circular depression (6), in which a cylindrical body (9) is disposed so as to be moveable. The depression (6) exhibits arcuately extending channels (7), which extend from the depression (6) towards the walls (3) and/or the corners (8) of the reaction vessel.

Abstract: A furniture hinge has a hinge arm connectible to the body of a piece of furniture and a lever connectible to a closure for the furniture. The closure is movable between a closed position and an open position. A damping device is disposed between the hinge arm and the lever and includes a housing having a bellows-like first part and a second part secured to the hinge arm. A piston rides in the housing and divides it into first and second chambers. The piston is provided with flow channels which allow hydraulic fluid in the housing to flow between the first and second chambers. The piston is mounted on a rod which extends through, and is coupled to, the first housing part and is articulately connected to the lever. A sealing member likewise mounted on the rod is arranged to seal the flow channels upon movement of the closure to its closed position.

Abstract: In the apparatus for fixing the position of the test zones of a test strip and for reversing the latter, a guide (8) opens into a reversing device (1, 1a) for the test strips (2). Between the guide and the reversing device is arranged a closing means (9) for the guide, which is connected to a holding device (10) via a lever (5). The holding device (10) projects into the guide and is mounted rotatably in synchronism with the closing means (9). It is also equipped with a drive device (7). The reversing device has a moveable stop (4, 4a) which is driven by a position-detection means (3) arranged in the guide (8).

Abstract: An apparatus for transporting test material in strip form underneath a measuring device, the test material having various test zones along the length of the strip, the apparatus comprising conveyor means for transporting the test material; a retaining device disposed above the conveyor means at an angle transverse to the direction of movement of the conveyor means; and at least one heating device disposed on the retaining device for selectively heating individual test zones on the test material as the test material is transported by the conveyor means.

Abstract: In the device for evaluating test strips having individual test sections, which consist of a terminal, a work platform with holder for the test strips and a sensing head, a position mark 5 is arranged for each test section 9 on the side of the holder 13. On the work platform 15, the sensing head 14 is arranged so as to be capable of of traversing the test sections 9 and the position marks 5. The sensing head 14 is provided with light sources 6, which are directed towards the test sections 9, of different wavelength and with a light receiver and with at least one position detector 10 which is directed towards the position marks.

Abstract: A hinge for connecting two relatively movable components of a piece of furniture has a housing which is mounted on one of the components and a carrier which is mounted on the other component. A link bar pivotally connects the housing to a hinge arm which is secured to a quick-mounting plate via a fastening screw. The fastening screw passes through a slotted hole of the hinge arm so that the latter can be moved longitudinally relative to the quick-mounting plate when the fastening screw is loosened. An adjusting screw is threaded into the hinge arm and allows the inclination of the hinge arm relative to the quick-mounting plate to be adjusted. One end of the quick-mounting plate is provided with a pivotable arresting member for rapidly locking the quick-mounting plate to, and rapidly releasing it from, the carrier. The arresting member has a lip which engages a projection of the carrier in the locked condition. A cover is provided for the hinge arm and is designed to overlie the fastening and adjusting screws.

Abstract: A photometer head having a housing for receiving and supporting small test volumes. The housing includes a recess and a plate for substantially covering the recess. A light transmitter and a light receiver having first and second end surfaces are mounted within the housing and project into the recess at locations substantially opposite one another to define a gap between the first and second end surfaces for retaining the small test volumes. A liquid applicator extends through an aperture in the housing to dispense droplets of liquid test volumes into the gap. The light transmitter directs optical energy at the droplets and the light receiver receives the transmitted energy.

Abstract: A cabinet unit has an outer door pivotable relative to an outer portion of a furniture piece to define an outer cabinet, and an inner door pivotable relative to an inner portion of a furniture piece to define an inner cabinet, such as a refrigerator and the like, wherein in an open position of the inner door a gap is available between the inner door and the inner portion of the furniture piece to provide an access to mounting and adjusting screws of a hinge of the outer door.

Abstract: A cuvette for holding a liquid to be examined optically has front, back, and side walls defining a rectangular cross section and a Y-shaped structure at the bottom thereof for holding the liquid. The Y-shaped structure extends between transparent front and back walls with an upper funnel mouth extending to the side walls, and a liquid holding portion formed of inner walls spaced between the side walls, and extending down to a rounded, tub-shaped bottom. The front walls are transparent and serve also to form the front and back of the liquid holding portion. The bottom preferably has a frustroconic surface to minimize the amount of liquid required for examination and to facilitate mixing of liquids added to the cuvette. The side walls extend below the tub-shaped bottom, and are joined to the front and back wall midway up the liquid holding portion by means of a rib, so that light is not scattered by the side walls and optical inhomogeneities are prevented.

Abstract: Antigen-antibody reactions are measured by passing laser light through the mixture of the antigen solution with the corresponding antibody and measuring the light scattered in the forward direction and determining its intensity. The device used comprises a measuring system consisting of a laser, at least two diaphragms, a system of lenses and a photodetector and a light trap having a diameter corresponding to 1.1 to 1.7 times the diameter of the laser beam.