Abstract: A detachable and non-damaging hanger assembly for use with vertical support structures located either inside or outside a building. The hanger assembly comprises a central bracket having means for removable attachment a support structure with easily removable rod-like hanger members or arms extending upwardly, downwardly, or both, from the central bracket. The members or arms extending outwardly, preferably in a curved manner, from the support structure and have on the outer ends of the arms means for hanging decorative or useful items. The method consists of attaching the central bracket to a vertical support structure by means of an adjustable belt that extends around the circumference of the support structure. With the central bracket attached to the support structure one end of the rod members is then telescopically engaged in a perforation formed in the central bracket so that the rod members are releasably held by the central bracket.

Abstract: A perforated vessel, which holds solid water sanitizing material (usually chlorine tablets) that dissolves in water. The vessel is coupled to the water supply hose of an automatic swimming pool cleaner. The football-like shape of the vessel and the coupling to the pool cleaner hose assures the movement of the vessel around the pool, without hose entanglement, as the pool cleaner moves about the pool. Sanitizer is thereby distributed within the pool water more evenly and more rapidly than is accomplished by commonly used free floating chlorinators.

Abstract: A folder is especially designed for use by an athletic coach or instructor. The folder includes a pair of stiff, rectangular supports or covers joined in the folding fashion by a linear hinge. On both the interior and exterior surface of at least one of the covers there are a plurality of releasable fastening elements, such as velcro pads. A rectangular chalkboard is provided having a top surface permanently marked with a diagram of the competition area and demarkation lines an athletic sport. The undersurface of the chalkboard is equipped with second, mating releasable fastener elements, that are releasably engageable with the first fastening elements. A magnetic board is likewise provided having a top surface permanently marked with a diagram of the competition area and demarkation lines of an athletic sport with the undersurface of the magnetic board equipped with second releasable fastening elements arranged in the same mirror image pattern as that on the surfaces of the cover.

Abstract: This invention provides a method of concentrating a metaliferous ore containing also substantial quantities of pyrites and/or pyrrhotite and/or sphalerite and comprises subjecting an aqueous pulp of the ore to a froth flotation process in the presence of a depressant and in which (1) pyrites and/or pyrrhotite, and/or (2) sphalerite, is depressed by using as the depressant an amine in which at least 20% of the total number of amine groups are tertiary amine groups and in which the number of quaternary amine groups present is zero or is less than one-third the number of tertiary amine groups.

Abstract: A method of concentrating a metalliferous ore containing also substantial quantities of pyrites and/or pyrrhotite and/or sphalerite and comprises subjecting an aqueous pulp of the ore to a froth flotation process in the presence of a depressant and in which (1) pyrites and/or pyrrhotite, and/or (2) sphalerite, is depressed by using as the depressant a condensation product of an aldehyde with a compound containing at least two amine or amide groups.