Abstract: For manufacturing articles of plastics, rubber or any other material a mold or die assembly comprising a mold or die base assembled from repetitive modular standard elements consisting of substantially "ready to use" interchangeable base plates is provided by the invention.The base plates are prefabricated by high-precision castings or galvanoplastics or any other similar high-precisious non-cutting method of manufacture.At least two of such base plates are, as mold or die plates, provided with a pre-determined number and arrangement of finished to sized, prefabricated cylindrical bores or piercings of any non-circular, mainly polygonal cross-section. Each of said bores or piercings is capable of fittingly receiving an interchangeable mold or die insert carrying the individually designed (negative) mold or die cavity surface for forming the particular article(s) to be manufactured.

Abstract: Disposable syringe made of plastics, for medical purposes, consisting of a barrel (1), a piston (2) provided with a plunger shaft (3) guided at a distance from the barrel wall, and a closure cap (4), the piston (2) being releasably joined to the plunger shaft (3). The piston (2) is at least partially softly resilient due to the fact that on the piston periphery wall parts of greatly reduced wall thickness are present. The closure cap (4) contains a sufficiently long, stable slide bearing for the plunger shaft (3), so that deformation of the latter, arising out of off-center application of force in the retracted piston position, and out of the tendency of the relatively thin plunger shaft (3) to bow or buckle, will not be transferred to the piston (2).

Abstract: Water supply system comprising a unit for converting the wind energy into kinetic energy, a unit for converting the kinetic energy into another usable form of energy and a unit for supplying water driven by that usable form of energy. According to the improvement, the unit for converting the wind energy is a wind motor (1) having rotor blades (41) and a control mechanism (42) for constant load on the rotor blades (41) independently from the wind intensity, the unit for converting the kinetic energy is a device for compressing the air to a pressure greater than that of the atmosphere and the unit for supplying water comprises a natural or artificial source of water such as a well (21) or a container operated by pressurized air and structure for temporary storage of the water and for controlling the water bailing from the source of water.

Abstract: The invention relates to a gas-heated or kerosene-heated boiler for warm water, hot water or for steam generation having a substantially horizontal cylindrical combustion chamber defined and surrounded by a flue tube (1) consisting of a plurality of annular ring tubes (b 2) that are arranged in succession for conveying a suitable heat carrier and are held together by means of annular distance strips (3). At least some of the annular ring tubes have different inner cross sections and/or are arranged in a manner of having different, unequal spacing distances one to the next. Thus, a substantially uniform main diameter of the flue tube (1) is maintained, and despite of this, the flow of heat carrier circulated is harmonized with the thermal load which is non-equally distributed along the axis of the combustion chamber, resulting in improved utilization of the heat energy radiation at substantially constant wall temperature along the flue tube (1).

Abstract: The invention relates to a process for obtaining ready-for-fertilization sexual products from sexually mature fish in a period independent of their natural spawning season, in which actual stage of ripening is determined by probing of sexual products [sperm or eggs], fish not yet ripe for ovulation are separated from ripe fish, compounds of hormonal effect are administered to fish, and after the ovulation sexual products are obtained from the fish or from their environment.In the process according to the invention a nonapeptide-C.sub.1-4 -alkyl-amide or a decapeptide amide of the general formula (I),Glp-His-Trp-Ser-Tyr-X.sub.1 -X.sub.2 -X.sub.3 -Pro-X.sub.4 (I)whereinX.sub.1 is a glycyl group or a D-isomer of any natural or synthetic amino acid group,X.sub.2 represents an L-amino acid group having 1 to 4 carbon atoms in the side chain, L-phenyl-alanyl or L-tryptophyl group,X.sub.3 represents an L-amino acid group having a C.sub.1-4 alkyl or C.sub.2-4 alkyl-amide side chain,X.sub.4 is a glycine-amide or a C.

Abstract: A chocolate product with increased protein content and having decreased carbohydrate content is disclosed. The product comprises substantially of a processed cheese and chocolate melt made perfectly homogeneous in a weight ratio of 1:1-1,5, being solid or semi-solid at environmental temperature. The carbohydrate content of the chocolate is partially replaced by decomposed milk or cheese protein. This product is manufactured by mixing melted cheese with a chocolate melt at 50.degree. C. or higher temperature by intensive stirring and homogenizing the mass, which is allowed to solidify preferably after it is formed. The formed product can be immersed into chocolate to obtain a chocolate icing on the surface of the product.