Abstract: Novel polycyclic macrocyclic compounds having four tertiary nitrogen bridgehead atoms and six bridging chains, each of which have not more than twelve directly connecting atoms between each pair of bridgehead nitrogens, said bridging chains being hydrocarbon chains and hetero-substituted hydrocarbon chains having at least one hetero connecting atom selected from the group consisting of oxygen, sulfur, and nitrogen, at least two of said chains being hetero substituted. When admixed with a compatible cation-donor compound, the polycyclic macrocyclic compounds form stable cation-containing macrocyclic complexes which, in turn, can be conveniently dissociated by addition of acid or a quaternizing acid. The novel polycyclic macrocyclics are valuable for use in the same way and for the same purposes as chelating agents.The polycyclic macrocyclic compounds are prepared by condensation reactions utilizing high dilution techniques, e.g.

Abstract: A vehicle wheel suspension device, for example for the rear wheel of a motor cycle, comprises a fork with two arms between which the wheel is mounted. The fork oscillates about its base and an intermediate solid serves as a base for buttressing connections extending from the vicinity of the free ends of the arms of the fork.

Abstract: This invention relates to a process for preparing vaccines, which consists in bringing into contact a toxic product with glutaraldehyde at a concentration and for a duration just sufficient to detoxify or inactivate said toxic product, and in stopping the glutaraldehyde-antigen reaction as soon as said inactivation stage is reached by physical and/or chemical means. The thus obtained inactivate product remaining antigenic and retaining its immunizing power, is usable as a vaccine for the preventive treatment of human and animals against infections caused for example by microbial or venomous toxins.

Abstract: Novel infusion-making machine characterized by a filter consisting of superposed crowns located in a centrifuging chamber eccentric with respect to a central shaft rotated by a motor, and submitted to a compound motion. The adjustments of the crowns permits infusing and filtering over a broad range so that the machine may be used in a variety of applications.

Abstract: A mechanism for converting rotary motion into translatory motion including a threaded shaft, an internally threaded sleeve surrounding the shaft and a plurality of balls in a helical passage defined between the sleeve and shaft by the threads, comprises a channel for transferring the balls between opposite ends of the passage which includes a longitudinal bore in the sleeve and, in each of two identical annular end plates secured to either end of the sleeve, an arcuate recess formed by a central bore portion of increased radius, and a linear groove having opposite ends communicating with the recess and the sleeve bore. The end plates which may be moulded from self-lubricating plastics material may have stops adjacent the inner ends of the groove which project inwardly between adjacent threads of the groove to guide the balls into the groove. The ends of the sleeve bore may be chamfered and the outer end walls of the grooves inclined to aid transfer of the balls between the bore and groove.

Abstract: The invention relates to a novel method for determining the multipole windings of electric induction machines. This method is based on the operational modulation, which consists in modulating a 2p-pole basic winding by q sequences of complex operators (a.sup.o, a.sup.1, . . . a.sup.r, . . . a.sup.m-1) wherein said operators are the m m.sup.th roots of the unity in a m - phased system, so that the polarity of the modulated winding is .vertline.2p.+-.2q.vertline.. In a 3-phased system, the wiring diagram consists e.g. in 9 main branches of windings coupled into 3 main parallel coupled stars, and this diagram requires only 6 outputs and two 3-pole switches for switching from one speed to the other.

Abstract: Apparatus for electrically chopping a direct current signal by controlling the superconductivity state of resistance elements contained within a cryostat. The resistance elements are in a bridge arrangement and the control is provided by laser diodes also contained within the cryostat.

Abstract: A calorimeter includes an adiabatic enclosure surrounding a tube for supporting a sample. In the enclosure is a control chamber in thermal contact with the sample-carrier tube and containing a substantially perfect gas. The temperature of the sample is kept constant during a change of state by varying the pressure of this gas. A differential gas thermometer provides an indication of the difference between the temperature of the sample and that of a thermally insulated reference body which is initially at the same temperature as the sample. An automatic control system varies the pressure of the gas in the control chamber in the sense which tends to cancel any temperature variations detected by the differential gas thermometer. The gas pressure is varied by means of a vertical passage which has its upper end connected to the control chamber and its lower end connected to receive hydraulic liquid from a volumetric pump actuated by the control system.

Abstract: This invention relates to a process for preparing vaccines, which consists in bringing into contact a toxic product with glutaraldehyde at a concentration and for a duration just sufficient to detoxify or inactivate said toxic product, and in stopping the glutaraldehyde-antigen reaction as soon as said inactivation stage is reached by physical and/or chemical means. The thus obtained inactivate product remaining antigenic and retaining its immunizing power, is usable as a vaccine for the preventive treatment of human and animals against infection caused for example by microbial or venomous toxins.

Abstract: The invention relates to lamelliform oxides of high ionic conductivity which contain monovalent elements inserted between lamellae of oxides of the type (L.sub.x M.sub.1-x) O.sub.2 wherein L is a trivalent element, M is a tetravalent element and x is a number between 0 and 1. Such oxides are useful as solid electrolytes in electrochemical generators or cells.

Abstract: In a method for measuring the concentration of a substance contained in a gas, the gas is irradiated with a radiation having a sufficiently short wavelength to photodissociate the substance. A photometric measurement is then carried out on at least one of the products of photodissociation in order to determine its concentration which is proportional to the concentration of the substance to be measured.

Abstract: A cold storage installation having a part thereof which is available for rapid freezing consists of a number of open compartments which are disposed one following the other and intercommunicating. Certain consecutive compartments are associated with means such as fans for creating air circulation conditions necessary for their utilization as freezing spaces. These consecutive compartments are adapted to be covered in longitudinally, possibly by fixed walls and movable elements associated with the compartments or possibly in part at least by elements on pallets to be located in the compartments.The freezing compartments are preferably upstream of the refrigerating equipment which may be located in an upper passage.The whole array of compartments is preferably provided with corridors, air circulation passages being located parallel to the corridors and transversely at the ends of the corridors.

Abstract: The use of polyconjugated polymers having .pi.-electrons which are delocalized throughout the macromolecular chain as oxidation-reduction polymers is described. The apparatus for regenerating such oxidation-reduction polymers comprises a column, at least one working electrode, an auxiliary electrode, a reference electrode, a potentiostat and a porous wall which separates the auxiliary electrode from the working electrode. Also disclosed is the use of the polymers in the oxidation and reduction of organic and inorganic substances.

Abstract: A synchronous rotary electric machine has a stationary superconducting D.C. field winding, a rotatable mechanical torque transmission shaft which carries normally conducting polyphase windings for providing a rotating field when A.C. currents circulate therein, and stationary auxiliary D.C. windings constructed to deliver a magnetic field. The currents in the auxiliary windings are adjusted for maintaining the torque and axial force tending to move the field winding under a predetermined value.

Abstract: A calorimeter for measuring the latent energy of a sample at a pressure of at least 1,000 bars has a test chamber enclosed in a substantially adiabatic enclosure. It has thick walls able to withstand the very high pressure, and is connected by capillary tubing to means for holding it at a set pressure. The test chamber and a reference body which is thermally equivalent to the chamber are surrounded by respective adiabatic jackets and symmetrically arranged in an isothermal enclosure which is held at a set temperature. A differential gas thermometer has bulbs in contact with the test chamber and with the reference body, and a two-input differential pressure measuring unit has each input connected by a capillary tube to one of the bulbs. The pressure measuring unit has a manometer capsule with a respective input on each side of a flexible membrane, a capacitive pickup for sensing the position of the membrane, and electronic readout means. It is enclosed in a thermally insulative case.

Abstract: A control device in implantable sub-cutaneously for use in medicine and surgery. It is actuable by pressing on a sub-cutaneous membrane. It comprises a first chamber closed by the membrane which is placed on one surface of its casing and contains an incompressible fluid, and a second chamber, containing a gas and housing two coaxial bellows connected at their free ends. One of the bellows communicates with the first chamber and the second bellows communicates with a flexible duct going to the duct or cavity to be controlled.

Abstract: In a method and system for the iterative and simultaneous comparison of a flow of data with a group of reference data items, the reference data items are recorded in the form of logical entities in a two dimensional memory table, one entity per column, each line containing data elements of the same order of each reference entity. The elements of the flow of data are compared in parallel and successively with those contained in the lines of the table, according to a first function provided by a logic unit. Each time, the results of a comparison are combined with the results already obtained (or, in the case of the first comparison results, with a set of initial register states, typically a "transparent" all-true set of states to pass on the first results to the next combination step which is usually the first meaningful combination step) according to a second function provided by a second logic unit, the result of the method being, in the simplest case, given by the final comparison.

Abstract: An electric power generating plant includes at least two compressors having matched operating characteristics, alternators and turbines and boilers having combustion chambers connected to the turbines. The compressors, alternators and turbines are operatively interconnected such that during no power demand periods the compressors are driven in a series arrangement by the alternators, functioning as electric motors, to store a supply of pressurized air in an air storage tank, and during normal and peak power demand periods the turbines, supplied by the combustion chambers of the boilers, drive the compressors, functioning in parallel relationship, which feed respective ones of the boilers with enriched air and a gas recycled after expansion by one of the turbines. During the normal and peak power demand periods pressurized air previously stored in the air storage tank by the compressors is fed to the combustion chamber of one of the boilers.

Abstract: Process of production of a separate phase, especially a solid phase of modified composition, from a matrix in liquid phase.Starting at a temperature at which the matrix is entirely molten, it is subjected to the action of an electromagnetic field, with such a frequency that the induced currents can be developed in the entire mass, and then the matrix is cooled, while maintaining the electromagnetic field, to a temperature range which causes the separation of a separate phase, especially a solid phase, and this phase is collected, under the effect of the electromagnetic field, in a certain zone of the matrix in the form of a compact mass.

Abstract: A device which generates plasma by energizing a column of gas with a high frequency periodic electric field of a frequency of at least 100MHz. The generating means extends over only a part of the gas column and the power of the energizing field is such that the plasma generated includes and extends beyond said part of the gas column. In one embodiment the gas column is contained in an elongated insulating casing and the generating means comprises a first metallic tube open at both ends and surrounding a part of the casing, a second tube enclosing the first, and a connecting ring between the first and second tubes.