Abstract: The present invention is an apparatus and method for pouring a specific, predetermined amount of a substance from a container without having to measure the substance. The substance is preferably a liquid or a powder. The apparatus comprises a container, a buffer chamber connected to the container, a dosage chamber connected to the buffer chamber, and an opening. When a user tilts the container up, the substance flows from the container to the buffer chamber through an opening. When the container is placed back down, a predetermined amount of the substance flows into the dosage chamber. When the container is tilted once again, the predetermined amount of the substance contained in the dosage chamber flows out through the opening.

Abstract: A fuel mixture, comprising from 10 to 60 mols % acetylene and from 40 to 90 mols % ethylene, is prepared by mixing the two constituents in the gaseous phase at a pressure slightly above atmospheric pressure and at a temperature ranging from -25.degree. C. to +20.degree. C.

Abstract: A combustible mixture for torches and burners is formed essentially of at least 15% of a member of the group consisting of methylacetylene and/or propadiene diluted with up to 85% of a diluent which itself is formed of a mixture of at least one C.sub.3 hydrocarbon and at least one C.sub.4 hydrocarbon, and in addition wherein the C.sub.3 diluent comprises at least about 45% of all the C.sub.3 hydrocarbons including the C.sub.3 acetylenes, such that the endothermic heat of formation of the mixture for a molar volume is at least 10 KCal and that the proportion between the C.sub.3 and C.sub.4 hydrocarbons in the diluent is between 70/30 and 95/5.