Abstract: This invention relates to combustion control. It preferably uses a microphonic probe. Within a water circulation enclosure, a probe head defines a thin channel joining a cavity to a furnace, the cavity being closed by a diaphragm arranged as an acoustic transducer. The acoustic pressure which is detected is connected to the combustion characteristics. The invention is used in particular for turbulent premixture flames.

Abstract: A process is disclosed for cutting rock by means of discharging a medium under high pressure from a nozzle head at a fixed oscillating angle. A nozzle head on the end of the pressure hose is set in a freely pulsating movement through the discharge of a medium under high pressure. The movement of the nozzle head is controlled by a guide with stops. An apparatus for carrying out this process is also disclosed. The apparatus comprises a suitable nozzle head on a delivery line 1 for discharging a medium under high pressure and with a fixed oscillating angle and a guide 6 with stops 4. A flexible high-pressure hose is used as the delivery line 1.

Abstract: A pad transfer printing machine is disclosed in which the engraved printing plate is suspended face-down at an elevated position above the surface to be printed, and is horizontally movable between a retracted position and a pad contacting position. The plate is inked and scraped as it moves horizontally and, at the pad contacting position, presents an inked image to a deformable transfer pad. A movable printing member drives the transfer pad in alternating upward and downward strokes and inverts the pad during each upward and downward stroke, so that the transfer pad is alternately brought into contact with the printing plate at the top of its stroke and with the surface to be printed at the bottom of its stroke. The elevated position of the printing plate renders it easily accessable for removal and replacement. Excess ink is automatically removed from the printing plate by the scraping device as the plate is removed, and the excess ink is returned to the ink supply.

Abstract: A pharmaceutical composition for the prevention of dental caries which comprises as essential component(s) one or more of pentacyclic acid triterpenes of the formula: ##STR1## wherein R.sub.1 represents CH.sub.3, CHO or CH.sub.2 OH, R.sub.2 and R.sub.3 independently represent CH.sub.3 or COOH, R.sub.4 represents H, CH.sub.3, COOH or COOCH.sub.3, R.sub.5 and R.sub.6 independently represent H, CH.sub.3 or OH, and A represents two Hs or O, and their salts.

Abstract: The subject matter of the invention relates to apparatus for cooling or drying coarse-grained bulk material, comprising a plurality of trays mounted one above the other for rotation about a common axis, each tray being divided into a plurality of segments adapted to be tilted about a tilt axis extending in a radial direction of said common axis, means supporting said segments in the plane of the respective tray and permitting said segments to be tilted only within a determined angular range of rotation, and means for forcibly tilting each segment within said angular range. In prior art constructions, different means for forcibly tilting each segment in the said angular range have been required, depending on the time required by the feed material to pass through the cooling apparatus and on the number of trays employed in the cooling apparatus.

Abstract: An .alpha.-amino acid is effectively separated and recovered from an aqueous solution containing at least an .alpha.-amino acid and its corresponding .alpha.-amino acid amide by performing ion-exchange electrodialysis in the presence of ammonia. A reaction product liquid obtained by biochemical asymmetric hydrolysis of a D, L-.alpha.-amino acid is used preferably as the raw material aqueous solution for dialysis.

Abstract: To treat hydrocephaly, an intracranial catheter is implanted in the head. It is connected to a tube fitted with a non-return valve and serves to divert the flow of cephalo-rachidian liquid to the peritoneum or to the right auricle of the heart. In accordance with the invention a hydraulic filter of non-linear variable impedance is connected in the tube in series with the valve. The filter maintains an average flow rate of the cephalo-rachidian liquid close to the physiological flow rate, but prevents sudden rushes of fluid flow, thereby permitting the intracranial pressure to vary in the short term in the normal manner over a characteristic period of about one second, while preventing said pressure from rising slowly in the long term, e.g. over a characteristic period of about one minute. This is done by a bead (160) which is housed in a cavity (161) extending between a proximal orifice (111) and a distal orifice (136). The distal orifice constitutes a leaky valve seat for the bead.

Abstract: A bottle with a neck (1) has a child-resistant screw closure cap (13). In order to make the cap (13) child-resistant, the neck (1) is fitted with a collar (7) of U-shaped cross-section. The collar (7) is retained on the neck (1) by engagement of pawls (11) inside a portion (8) of the collar under a retaining ring (2) on the neck (1). The cap (13) is screwed onto the part (8) of the collar and to allow this to be done, the collar (7) is prevented from rotating on the neck (1) by engagement of the pawls (11) with ratchet teeth (4) on the outside of the neck (1). The pawls (11) and the ratchet teeth (4) are so shaped that if an attempt is made to unscrew the cap (13) merely by turning it in a counter-clockwise direction as seen from above, the pawls (11) ride over the ratchet teeth (4) so that the collar (7) is lifted on the neck (1) and is free to rotate.

Abstract: A milling-boring machine is described which allows various types of operations to be carried out on a workpiece of medium-large size so as to allow its complete working in a single location. The machine includes a pillar, a slide movable vertically along the pillar and a cylindrical head rotatably mounted in the slide, the head being rotatable and the slide being movable by digitally controlled drive means. The head carries two mandrels with their axes parallel to each other and parallel to the axis of the head, and at a predetermined distance therefrom, the mandrels being selectively rotatable at different speeds. Selected tools are mounted on the mandrels and on tool accessories attachable to the head. The machine further includes an accessory magazine for selectively supplying accessories to the head and a tool magazine for selectively supplying tools to the mandrels and to the tool accessories, with automatic devices for changing the accessories and the tools.

Abstract: The invention concerns new 1-tert.-alkyl-thiohydrazine-1,2-dicarboxylic a derivatives, their production, and their use as reagents for the transfer of a 1-tert.-alkylthio residue, particularly of a 1-tert.-butylthio residue as a protective group for thiols.

Abstract: A smoking device is disclosed which allows the user to regulate the air he inhales to consist of pure tobacco smoke, pure air, pure air carrying volatile substances, or a mixture of tobacco smoke and air carrying volatile substances. This is accomplished by a smoking device having three air passages and means to selectively open and close these passages.

Abstract: The present invention describes the inactivation of target cells by treatment of said cells with psoralens and irradiation with long wave length ultraviolet light. The inactivated cells are shown to be antigenic and are shown to be non-infective. These cells are useful as target antigens for in vitro assays of cellular immunity. Diagnostic kits containing the inactivated, target cells are prepared for use in serologic assays. Since the inactivated cells are immunogenic and non-infective, they are also useful as vaccines.

Abstract: The invention provides a modular fire fighting apparatus which may be quickly and easily mounted onto an ordinary pickup truck, and conveniently operated by the vehicle driver from the cab of the vehicle. The module generally includes a pump coupled to an engine for pumping a fire-retardant liquid, a control means for regulating the amount of liquid pumped, and a reservoir tank fluidly connected to the pump. The frame of the apparatus both unitizes the pump, engine and tank, and positions the engine and pump controls within the reach of the operator when the operator is in the cab of the vehicle. The invention further includes a tank level indicator including a transparent conduit and an elongated float engaged onto a guide rod in the tank for providing a visual display of the tank level which is positioned so that it may be observed through the rear-view mirror of the truck.

Abstract: The invention relates to the use of naproxen lysinate, ketoprofen lysinate and/or diclofenac lysinate in the form of an injectable solution in the treatment of inflammations and rheumatic disorders, and to injectable solutions containing the anti-inflammatory active compound naproxen, ketoprofen or diclofenac in the form of its lysinate.

Abstract: A refrigerated display counter has an interspace between an insulated tub-shaped cabinet and an inner tank forming a display surface. A cold air distribution duct provides for cold air flow over the display surface. An opening is provided in the cold air distribution duct, below the display surface level and deflector means are mounted in proximity to the opening for deflecting part of the cold air flow into the interspace.

Abstract: An artificial tree, simulating a Christmas tree, includes a vertical trunk and a plurality of limbs made of twisted wire extending from the trunk. A plurality of "wire brush" type filaments are arranged in parallel on a tape carrier. The tape carrier, with the filaments, is interleaved in the twisted wire of the limbs to provide the appearance of needles extending from the limb. This provides an inexpensive way of making a realistic looking artificial tree.

Abstract: Smoking article (10) has a filter mouthpiece (14) with a first stage filter element (18) and second stage filter element (19). First stage filter element (18) is rigidly attached to tipping paper (22). Second stage filter element (19) is free to move longitudinally in mouthpiece (14) and may be made to move axially by tapping the cigarette, thus, covering some of the ventilation holes (16) and changing the smoke to air ratio and the flavor.