Abstract: For water treatment systems it may be desired to feed various chemicals at optimum rates into the system. Improvements over the invention of U.S. Pat. No. 4,519,914 and also to the novel feeder capsules employed are a shown.The rate of feeding depends upon the size and number of small holes which are provided, or the user pokes through the shell of the capsule, and upon the flow rate of the water around it. In some embodiments the capsule is weighted to direct the small holes upward as it rests in quiet water, thereby substantially to halt the flow of chemical; but as the water is sloshed about in use, the chemical is dispensed at a rate proportional to the amount of use.In a so-called "dumbbell" capsule the vertical tendency is aided by a second vented floatation sphere snapped to the first to hold the dispensing holes upward even in a hot tub. It is used in the controlled release of free bromine by the oxidant, sold under the trademark "OXONE".

Abstract: A centrifugal classifier for classifying air, feed solids, fines and coarse particles has a housing with inlets and outlets. The housing is substantially parallelepipedic and contains a plurality of classifier rotors. Each rotor is connected to a separate outlet or to two separate outlets for classifying air and fines.

Abstract: An apparatus to adjust the length of the sheath of a bowden cable and capable of transmitting substantial forces. The bowden cable sheath terminates into a sleeve with a stepped outside diameter whereby it can be inserted into a structure fixed housing against the force of a compression spring. The housing contains a set of spacer panes which are spring-loaded and rest on the large diameter of the sleeve and which upon displacement of the sleeve out of the housing sequentially drop on the small sleeve diameter. The dropped panes extend the sheath each time by their thickness and between the sleeve collar and the housing inside wall form the support for the force exerted on the bowden cable. In a special embodiment, the apparatus is equipped with mechanical means accessible from the outside which when actuated will reset the already dropped spacer panes into their initial positions.

Abstract: An improved thermal imaging device is provided herein, which includes an internally-mirrored autocollimating mirror, a multi-element detector and a diaphragm in the mirror for limiting the aperture of the multi-element detector. In the improved device the multi-element detector is offset from the optical axis. At a symmetrical point on the other side of the optical axis, at which the autocollimating mirror forms an image of the multi-element detector, a mirror is disposed. Such mirror project the image of the multi-element detector back to the autocollimating mirror. Such image is then reflected once more right way up and laterally unreversed onto the multi-element detector in such a way that each individual detector element receives its own image.

Abstract: A process for the manufacture of phthalic anhydride by oxidation in the gas phase of an o-xylol naphthalene mixture. By producing a solution of 1 to 80 parts by mass naphthalene in 99 to 20 parts by mass o-xylol at a temperature of 0.degree. to 80.degree. C., storing the solution at that temperature, heating the solution only shortly prior to the reaction to 110.degree. to 180.degree. C., atomizing the heated solution into a hot airflow, passing the heated solution over metal oxide catalysts in the gas phase and collecting phthalic anhydride product, a problem-free manufacture of phthalic anhydride is attained.

Abstract: For water-treatment in swimming pools, cooling towers, hot tubs, and other systems, it is desired to feed various chemicals in small quantities but at optimum rates into the system. In several embodiments of the invention the water is recirculated through the system which usually includes a filter. It has been discovered that the chemicals can be fed by enclosing them in generally spherical plastic capsules suggestive of table tennis balls, but about the size of a base ball. The rate of feeding depends upon the size and number of small holes which are provided, or the user pokes through the shell of the capsule, upon the solubility of the chemical, and upon the flow rate of the water through a strainer, skimmer, or other chamber in the system into which the capsule is introduced. The random orientation of the capsule tends to average out variations.

Abstract: The invention concerns a method for depositing an interlining reducing friction and noise on a pitched cable consisting of a metal wire rope with a threaded helix. The preferred method consists in using a thermoplastic filament and raising the pitched cable to a temperature higher than the melting point of the thermoplastic used, and thereupon, winding the filament between the heated threads of the helix so that the flocks or hairs fuse or sinter to the metal wire and adhere.

Abstract: A device for testing the stringing tension of a racket is made up of two components. The first component has a racket support surface with a recess therein. The second component is a cylinder containing a spring in compression with a slot in the cylinder indicating the compression load on the spring. The components are connected together with a connecting bolt passing through the racket. A spindle mounted on the connecting bolt and the first component applies pressure between the two components, acts on the strings of the racket and indicates racket tension by the amount of compression applied to the spring of the second component. The connecting bolt can also be threaded and the second component cylinder can be threaded thereon to apply pressure between the components. Distance sensing electrical contacts in the recess of the first component indicate when the reading is to be made.

Abstract: Agonists and antagonists to nicotine are used as smoking deterrents.The nicotinic antagonists have the following structural requirements:(1) Aromatic, cycloalkyl, and heterocyclic carbamic acid esters of di- and trialkylaminoalkyl alcohols.(2) Aromatic, cycloalkyl, and heterocyclic thiocarbamic acid esters of di- and trialkylaminoalkyl alcohols.(3) Aromatic, cycloalkyl, and heterocyclic carboxylic acid esters of di- and trialkylaminoalkyl alcohols.(4) Aromatic, cycloalkyl, and heterocyclic carboxylic acid esters of heterocyclic amino alcohols.(5) Lobelia alkaloids: lobeline, lobelanine, and lobelanidine.The nicotinic agonists (nicotine-like) have the following structural requirements:(1) methylcarbamic acid esters of di- and trialkylaminoalkyl alcohols.(2) methylthiocarbamic acid esters of di- and trialkylaminoalkyl alcohols.

Abstract: Methods are provided for the treatment of pathological conditions connected with the production of interferons which destroy the immune system and possess damaging action on the cell system of mammals. Interferons are removed from the blood of mammals in two general methods. According to the first method antibodies to the interferons are introduced parenterally into the bodies of the mammals. In the second method continuous removal of interferon is achieved for example by extracorporeal perfusion of the blood of the patient through the substances which absorb, adsorb, disintegrate, or inactivate the biological activity of the interferons. HTLV-III/LAV virus is also removed by these methods.

Abstract: A seat heater for integrated assembly into car seats has at least two or several segments and faces, respectively, of any desired shaping. The heater includes several flat, electrically interconnected resilient heating elements (1.1/1.2) either forming a coherent heating face (1) or conforming to the section-wise individual seat configuration, especially the shaping thereof, with the connection between the individual heating elements (1.1/1.2) being respectively established by a low-strength electrical conductor (3) and the electrical conductor (3) being guided in an insulating resilient sheathing (6) of silicone rubber or the like engaging, at both ends, in partial lengths, each of the heating elements (1.1/1.2 et seq).