Abstract: Pressurized fluid circuits are provided which are suitable for use in a pressure drop detector for a pressurized fluid fire alarm system. The pressurized fluid circuits are provided as channels in the surface of a block of material and include one channel connected to a source of fluid pressure. The channels are associated with valve regions by means of which, with a diaphragm pressed thereagainst, a required one or more of the channels can be closed off.In its application to a pressure drop detector a normally pressurized region of the diaphragm may support a mechanical linkage of the detector such that if the pressure drops, on release of pressure in the system, the collapsing of the diaphragm allows the mechanical linkage to be released thus actuating a fire alarm.

Abstract: According to the invention, the raw mix for producing portland cement clinker comprises a lime component, a clay component, an iron-containing component and a modifying agent. The latter is a cake byproduct readily available at titanium and magnesium works. The percentage by weight composition of the mix is as follows:______________________________________ lime component, 88.3 to 77.8 clay component, 9.2 to 11.2 iron-containing component, 2.0 to 5.0 modifying agent, 0.5 to 6.0 ______________________________________The raw mix according to the invention possesses better properties than conventional mixes. For example, its plasticity is 140 to 160 units, and the degree of mineralization is as high as 19 percent.

Abstract: Sulfenimides are prepared by electrolytic oxidation of organic disulfides or mercaptans and imides. The electrolytic oxidation is accelerated by a halide compound.

Abstract: A process for the preparation of Portland cement clinker resides in that limey, clayey and iron-containing components are ground together. The mix is then homogeneized pelletized, decarbonized at 800.degree. to 1000.degree. C. and roasted at 1200.degree. to 1350.degree. C. Dust sublimates--wastes of the titanium production--are added at the stage of grinding or homogeneization in an amount of 0.5 to 6.0% by total weight of raw mix, and, in case the dust sublimates are added at the homogeneization stage, an aqueous suspension of cakes--wastes of the titanium and magnesium production--is added at the pelletizing stage, at a volumetric ratio of water to cakes of 3-6:1, and in an amount of 10 to 14% by total weight of raw mix.The process according to the invention enables the preparation of clinker exhibiting an improved strength. With the process according to the invention, the degree of decarbonization of raw mix is as high as 35-50%, and roasting temperature is 120.degree.-150.degree. C. lower.

Abstract: Vinyl chloride is prepared by gas-phase chlorination of a gaseous mixture containing 5 to 50 vol. % of ethane and 50 to 95 vol. % of ethylene. The amount of chlorine supplied into the reaction zone is determined by the formula: number of chlorine moles=3m+ 0.3n, wherein m is the number of moles of ethane and n is the number of moles of ethylene. Chlorine is supplied into at 4 to 6 points of the reaction zone.The method of the present invention makes it possible to increase the yield of vinyl chloride up to 70% by weight, while reducing power consumption for the process 1.5 times as compared to the prior art methods.

Abstract: A detector for magnetically detecting flaws on the inner surface of a pipe of magnetizable material comprises a magnetizing assembly having exciting magnets and movable longitudinally along the interior of the pipe and a detecting assembly movable longitudinally along the exterior of the pipe. The magnetizing and detecting assemblies are opposite and close to each other through the wall of the pipe and movable longitudinally of the pipe in a synchronized manner to ensure highly accurate flaw detection.

Abstract: The cleansing agent comprises oleic acid, isopropyl alcohol, triethanolamine, ethanol extract of peat wax resin obtained by ethanol extraction of peat wax resin at a temperature of the alcohol boiling point, ethyl acetate, 1,2-pyropylene glycol, polyethyleneglycolic ether of synthetic fatty alcohols C.sub.10 -C.sub.18, diethanolamides of synthetic fatty acids C.sub.10 -C.sub.13, and water, the components being taken in the following quantities, in percent by weight:______________________________________ oleic acid 10.0-13.0 isopropyl alcohol 19.0-21.0 triethanolamine 3.0-5.0 ethanol extract of peat wax resin 1.0-1.5 ethyl acetate 10.0-13.0 1,2-propylene glycol 4.0-5.7 polyethyleneglycolic ether of synthetic fatty alcohols C.sub.10 -C.sub.18 4.0-5.5 diethanolamides of synthetic fatty acids C.sub.10 -C.sub.13 5.0-6.5 water to 100.

Abstract: The specification discloses a novel process for the preparation of 11-tetradecenal and novel intermediates therefor. There is also disclosed processes for the intermediates. The novel intermediates include 1,1-dialkoxy-9-halo-nonane and 1,1-dialkoxy-11-tetradecene. There is further disclosed a process for preparing a mixture of cis- and trans-11-tetradecenal at the molecular ratio of approximately 1-cis-form to 9 trans-form, by reacting a Grignard reagent of 1,1-dialkoxy-9-halo-nonane with a mixture (approximately 60:40) of 1-chloro-2-pentene and 3-chloro-1-pentene and thereafter hydrolyzing thus formed 1,1-dialkoxy-11-tetradecene. 11-Tetradecenal is useful as a sex pheromone against the female eastern spruce budworm (Choristoneura fumiferana). The 9:1 ratio of trans/cis isomers is believed to be the most effective ratio to use against the budworms.

Abstract: An apparatus for cultivating microorganisms on a granular medium comprises a vertical cylindrical vessel with a top port for charging the seeded granular medium and a bottom port for discharging the culture. The vessel is separated, heightwise, into sections by horizontal partitions, each section being provided with a tube for letting in an aerating flow of air and a tube for letting out the flow with metabolites. Each partition is composite and made up of partially overlapping circular sectors with perforation in the form of slots.The sectors are provided with a means for shifting them so that when the medium is being charged into a section, all sectors form a solid plate, while, during discharge of the culture from the section, the sectors are shifted so that a free downward passage for the culture is provided.The sector shifting means is located under the partition, relative to the medium, and provides for shifting of the sectors in a horizontal plane.

Abstract: The invention provides a fluidized bed combustion apparatus comprising in a common structure a plurality of modules, each module comprising: a diffuser bed support arranged to support and fluidize a bed of granular material by means of air diffusion into the bed, feed means for supplying material to be burnt to a bed supported on the bed support, and control means for controlling the operation of the bed independently of the operation of the other modules.

Abstract: Pressure drop detectors are provided which are suitable for use in pressurized fluid fire alarm systems. The pressure drop detectors have pressurized fluid circuits provided as channels in the surface of a block of material, including one channel connected to a source of fluid pressure. The channels are associated with valve regions by means of which, with a first diaphragm pressed thereagainst, a required one or more of the channels can be closed off.The pressure drop detectors have a normally pressurized region of the first diaphragm which by means of a first piston normally supports a mechanical linkage of the detector. If the pressure drops however on release of pressure in the circuit connected to the detector, the collapsing of the first diaphragm allows the mechanical linkage to be released thus actuating a fire alarm.

Abstract: A road vehicle battery charging system for a dual voltage electrical supply includes a conventional alternator/rectifier assembly for charging the main battery and a d.c. to d.c. converter connected to charge an auxiliary battery in series with the main battery. The converter includes an autotransformer with primary windings in series with respective transistors across the main battery and further windings connecting the transistor collectors in series with diodes to the auxiliary battery. The transistors form part of an oscillator which produces an a.c. waveform with a peak-to-peak voltage slightly less than twice the main battery voltage--the deficiency being made up by virtue of the further windings.

Abstract: A transmission-type charged particle beam apparatus comprising a vacuum elope enclosing, first means, having at least ten individual charged particle sources to separately produce at least ten individual charged particle beams, second means to supporting a specimen to be investigated; third means to project each of the beams along a different beam path through a predetermined region of the specimen, the beam paths collectively converging about a rotational axis of symmetry at equal angles of at least 30.degree.

Abstract: A vehicle headlamp reflector comprises a dished body having a generally rectangular front opening and a bulb-receiving rear opening. The body is internally reflective and includes a first pair of laterally disposed reflective portions, a second pair of laterally disposed reflective portions, an upper reflective portion and a lower reflective portion. The portions are disposed inwardly of the respective portions, are on opposite sides of the opening and between the portions. The portions lie on the same paraboloidal surface while the portions lie on a different paraboloidal surface. The two paraboloid surfaces have common axes and common foci but the focal length of the paraboloidal surface in respect of the portions is less than the other paraboloidal surface.

Abstract: In order to make higher production speeds possible when making confectionery lollipops a method and a device are presented wherein the separation of the pieces of confectionery takes place by means of a cutting stamp making an up and down movement in the vertical plane and, each time, a piece of confectionery is transferred to a production head in which a partially inserted stick is present already and in which the piece of confectionery is prepressed, whereupon the stick is inserted further into the piece of confectionery during a rotation of the production head to a second position in which, by means of a pressing stamp moving to and fro in radial direction, the subsequent pressing of the lollipops takes place, the production head being rotated thereupon again over a distance to a position in which the lollipop is ejected from the production head.

Abstract: A road vehicle battery charging system for a dual voltage electrical supply includes a conventional alternator/rectifier assembly for charging a main battery and a d.c. to d.c. converter for charging an auxiliary battery in series with the main battery. The converter includes two transistors connected with a feedback transformer to form an oscillator to drive an output transformer. The oscillator includes two diodes which need to be connected to one terminal of the main battery to allow the oscillator to run and a switching transistor is interposed in such connection and has its conduction controlled in accordance with the alternator output so as to inhibit the d.c. to d.c. converter when the alternator output is below a predetermined level.

Abstract: A drum to build and form a belted tire, having a central support element, the central portion of which consists of radially slidable segments, and two bead retainers arranged at both sides of said support element, the spacing of said bead retainers being axially adjustable symmetrically with respect to the support element, the bead retainers having, at their circumference, radially expandable, integrally formed rings arranged to be brought into engagement with the tire in an air-tight manner, wherein the support element has an integrally formed rigid cases between the central portion and the bead retainers, the rigid cases being fixedly connected to the side of the bead retainers facing the central portion, the contact face of each rigid case facing the central portion being bevelled, the segments of the central portion which are arranged between the two cases engage the bevelled contact faces of the cases, are retained by springs and are similarly bevelled at the place of contact with the cases, whereby when

Abstract: A bolt and nut unit coated with lubricant comprising graphite and/or molybdenum disulfide, an ethylene-vinyl acetate copolymer and a fatty acid or a metallic soap thereof. This lubricant has low temperature sensitivity, and the bolt and nut unit coated therewith can be tightened precisely into position with a constant torque regardless of variations in ambient temperature and humidity.

Abstract: A generator for liquid containing .sup.99m Tc has an adsorbant bed of alumina, zirconia or the like and has associated therewith a quantity of an electron scavenging compound of a rare earth, silver or gold so as to maintain elution efficiency during the working life of the generator. The compound may be a rare earth oxide such as ceric oxide typically present as a coating on alumina particles in an amount of about 0.1% by weight or a compound such as silver chloride present in quantities typically of about 5%. The eluant may be sodium or potassium perchlorate in water.