Abstract: A system serves to establish the spatial positions of a cutter head of a tunnel driving machine with precision and monitors and/or controls this position automatically. The system uses a computer-controlled laser beam scanning technique to locate the three-dimensional positions of mirror devices in successive measuring stations spaced along the tunnel.

Abstract: In a pneumatic mixing apparatus for bulk materials, filter apparatus comprises a plurality of tube filters which are disposed each beneath a reverse cleaning nozzle. Venturi nozzles fastened to a perforated plate project into each tube filter coaxially with the latter. An external supporting frame is also fastened to the perforated plate and at its bottom end embraces the tube filters in a plurality of coplanar rings affixed to one another.

Abstract: A method for the continuous or batch preparation of trialkyl organo-oxysilanes by reaction of organic hydroxy compounds with trialkyl halogen silanes in the absence of acid-binding substances is disclosed. The organic hydroxy compound is added directly to the trialkoxy halogen silane in an amount which corresponds to no more than the stoichiometrically necessary amount. The trialkyl halogen silane, or the resultant mixture is always at the boiling temperature or above the boiling temperature in the gaseous state. The reaction mixture is subjected, no later than toward the end of the reaction, to a column distillation in which the column temperature is held such that the reaction is carried to the end within the column. In continuous operation, the trialkyl halogen silane is introduced in gaseous form into the bottom of a column and either kept under reflux or introduced into a reactor into which corresponding stoichiometric amounts of organic hydroxy compound are simultaneously introduced.

Abstract: A jaw for chucking devices, especially multiple-jaw chucks of machine tools, for example, for chucking workpieces having surfaces curved in only one direction, especially workpieces having round chucking surfaces. The contact face of the jaw is provided on a chucking element consisting of hard but flexible material to which the chucking force is applied in at least one line parallel to the curved surface of the workpiece.

Abstract: The invention provides an apparatus for automatically moving the tongue of a seat belt into a position in which it may conveniently be grasped by an operator for insertion into a buckle. The apparatus comprises an inflatable bellows engageable with the tongue and extensible into the position by the application of pressure. The bellows may be retracted by vacuum pressure or by integral resilient means in response to the tongue having been inserted into the buckle.

Abstract: Benzodiazocines corresponding to the formula ##STR1## are converted to benzodiazepines corresponding to the formula ##STR2## of claim 1 by subjecting the benzodiazocine (a) if it is halogen-substituted in the 3-position to a thermal treatment which may also take place in the presence of a nucleophilic agent for the reaction or (b) if the 3-position is hydroxy substituted to treatment with a Lewis acid which is a chlorinating or brominating agent. Whenever the diazepine obtained as the final product has a 2-halogenomethyl group it may then be converted to benzodiazepine which is otherwise substituted in the 2-position.

Abstract: A process and apparatus for delivering carbon i.e., coal dust, to be combusted in a furnace is presented. The furnace is of the type having plural combustion points and may include a shaft furnace such as, for example, a blast or cupola furnace. The carbon dust is delivered in dosed quantities to each of the individual combustion points in a separate air stream which is under a predetermined pressure. The carbon (coal dust)/carrier gas (air) is delivered to each combustion point in the furnace at super critical speed, i.e., the speed of sound, the carrier gas having a relatively high proportion of solid material therein. The actual quantity of carbon material delivered to each combustion point is directly detected and monitored as a consequence of volumetric measurement and is appropriately corrected by means of a secondary air supply when the carbon quantity either exceeds or falls below a predetermined nominal value.

Abstract: A hollow thread bundle for material and/or heat exchange has a plurality of substantially parallel hollow threads of substantially equal length, and a sewing seam wrapping around the plurality of hollow threads and including at least one sewing thread. The hollow thread bundle can be produced by wrapping the plurality of hollow threads by a sewing seam including at least one sewing thread.

Abstract: An apparatus for determining the viscosity of fluids, particularly blood plasma, includes an outer housing including a front surface having a groove therein; a disposable capillary tube removably mounted in the groove and including at least one loop, each of the loops having two substantially horizontal branches including an upper branch and a lower branch for flowing the fluid under the influence of gravity through a predetermined path, and a device for measuring the rate of flow of the fluid along the path in one of the horizontal branches. Also disclosed is a flexible disposable capillary tube for the fluid viscosity measuring apparatus.

Abstract: Foam-inhibiting compositions for use in an aqueous solution containing polyethylene glycol ethers corresponding to the following formulaR.sup.1 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.2in which R.sup.1 represents a linear or branched alkyl or alkenyl radical containing from 8 to 18 carbon atoms, R.sup.2 represents an alkyl radical containing from 4 to 8 carbon atoms and n is a number of from 7 to 12, mixtures of the same with a polyglycerol polyethylene glycol alkyl ether of 1 part by weight of polyglycerol having a hydroxyl number in the range of from 900 to 1200 adducted with from 4 to 20 parts by weight of ethylene oxide and etherified at the free hydroxyl groups with alkyls having from 4 to 8 carbon atoms, and their use as foam-inhibiting additives for low-foam cleaning agents.

Abstract: Novel aminopropanol derivatives of 2-hydroxy-.beta.-phenyl-propiophenones and their physiologically acceptable acid addition compounds, processes for their preparation and therapeutic agents which contain these derivatives and are useful as antiarrhythmic drugs.

Abstract: The present invention provides a process for obtaining solid cyanuric chloride from the cyanuric chloride vapor obtained by trimerizing cyanogen chloride by separating out in a separation chamber, wherein cyanuric chloride vapor and cold air are introduced into the separation chamber through obliquely upwardly directed inlets in such a manner that an intensive mixing up of the cyanuric chloride vapor with the cold air takes place after emergence from the inlet pipes, the cyanuric chloride-free waste gases are withdrawn from the upper part of the separation chamber and the solid cyanuric chloride is removed from the lower part of the separation chamber.

Abstract: Polyethylene glycol ethers of the type obtained by the addition of from 4 to 20 parts by weight of ethylene oxide onto 1 part by weight of polyglycerol having a hydroxyl number in the range from 900 to 1200 and subsequent etherification of the free hydroxyl groups with linear or branched alkyl halides containing from 4 to 8 carbon atoms, and their use as foam-inhibiting additives for low-foam cleaning agents.

Abstract: For measuring the deformation capacity of erythrocytes use is made of a sample vessel that is walled off into two spaces by a piece of foil with a pore therein. One such space is filled with buffer solution with erythrocytes and the other is filled with buffer solution without erythrocytes. A pressure head is produced acting across the foil for causing transit or passage of the erythrocytes through the opening, whose diameter is less than the major quiescent diameter of an erythrocyte so that information on the deformation capacity may be produced by measuring the transit time. This is done by electrodes placed on the two sides of the opening so that changes in the resistance to alternating current by an erythrocyte in transit may be sensed and the transit time taken. After about 200 transits the readings are processed in a processing unit.

Abstract: For the conveying and storage of radioactive materials there are needed containers which shield gamma and neutron-radiation and dissipate the heat of decay whereby there is desired a variable neutron shielding. This is obtained by a neutron shielding between the cooling fins of the container which is fixed on the cooling fins by bosses.

Abstract: A process for manufacturing a fiber-reinforced push or pull rod formed of electrically insulating plastic material having flange fittings fastened to respective ends thereof. The push or pull rod is formed preferably as a hollow cylinder, and the flange fittings are adapted for transmitting compression or tension forces. A plurality of threads are arranged in parallel with each other and an axis of the rod; which threads are then impregnated with a hardenable plastic material. In accordance with the invention, the tensile strength of the rod is improved by wrapping the threads about at least one pair of wires which are arranged substantially parallel and at a distance with respect to each other so as to form a tape wherein the wires form the edges of the tape. The wires, as tape edges, are inserted into helical external recesses of the flange fittings and are secured therein in a form-locking manner.

Abstract: The invention relates to a digital circuit arrangement for control of a corpuscular beam in the procedure of structurizing areas by use of corpuscular irradiation devices operating with linearly extended multi-deflection systems, particularly for use in microlithography, constituted of a plurality of like circuit members for producing columns which contain figure edge points, each member including three triggers for storing edge course control signals indicative of the edge course, the three triggers output signals are combined in antivalence in the respective circuit member to yield an edge point signal. Furthermore, the circuit members are combined in a columnwise member arrangement in which the triggers form shift registers for a positive and negative shift direction.

Abstract: In a method of testing the biological effects of cell-lots, which release a characteristic or stimulatable ultra-weak photon radiation, the intensity and/or the photon statistic of the ultra-weak photon radiation is measured, as the test factor, for the purpose of the in vitro examination of substances for possible cell-damaging or regenerating effects, or for the purpose of carrying out quality control on biological substances, such as foodstuffs, edible plants or seed materials.

Abstract: In a heat exchanger for heat transfer between ammonia converter effluent recycle gases and water, a plurality of U-shaped tubes have their inlet and outlet ends connected to a tubesheet which divides the interior of a shell into a pressure chamber and a heat exchange chamber containing the tubes. The pressure chamber is divided into an inlet chamber and an outlet chamber with the cooled recycle gases flowing into the outlet chamber and cooling the inlet chamber. The tubes are formed of ferritic steel and are welded to the tubesheet. A tubular cladding of nitriding-resistant material extends through the tubesheet at the inlets to the tubes and spaces the recycle gases from the tubes at the inlet ends.

Abstract: An alarm, safeguarding and monitoring system for a room zone includes a plurality of sensors disposed at different positions and responsive to different physical phenomena, such as an ultrasonic sensor, an infrared sensor and a microwave sensor. The sensor outputs are individually coupled to majority decision, central processing unit and alarm generator circuits by a plurality of redundant signal links to minimize malfunction in the event of disruption or tampering.