Abstract: A combined chalk and chalkboard eraser dispenser includes a vertical planar rear wall, a vertical planar front wall spaced forward from the rear wall by approximately the height of a standard blackboard eraser, and a horizontal planar bottom ledge projecting forward from the lower edge of the rear wall, an eraser dispenser opening being defined between a lower edge of the front wall and a forward edge of the bottom ledge. Chalk receptacles are substantially in the form of rectangular boxes having a open horizontal forward face. The depth of the chalk dispenser is preferably slightly less than the length of a standard piece of chalk.

Abstract: The residual level of N-vinylcarbazole in polyvinylcarbazole has been reduced to an amount less than 25 ppm by treatment of a solution of the polyvinylcarbazole with a strong acid. The polymer can be recovered in pure form by precipitation of the polymer from solution with a non-solvent.

Abstract: A necklace having a chain and a jewelry element has attaching members at each end of the chain and two pins extending from a rear surface of the jewelry element, with the pins disposed through the attaching members and bent back to the rear surface. A jewelry element having two L-shaped members, with a pin extending from an upright side of each and having an opposite end in close proximity to a base of each L-shaped member is disclosed. A jewelry element may have two pins attached at one end, terminating at the other end in a ball and disposed through attaching members, attached to ends of a chain. A method of making a necklace from a jewelry element having two pins extending from a rear surface thereof and a chain having attaching members at each end includes placing each attaching member over a pin and bending each pin back to the rear surface or heating each pin to form a ball at the end thereof.

Abstract: Free radical-curable compositions comprising a plastisol component and a copolymer containing free anhydride functionality and, optionally, other reactive diluents are provided. In particular, curable compositions employing a plastisol, preferably a polyvinyl chloride-containing plastisol, and a low molecular weight crosslinking copolymer component having free anhydride functionality and which is a partial esterification product of a terminally ethylenically unsaturated compound and a polymerizable maleic anhydride are provided. The compositions of the invention yield improved adhesives, sealants, coatings, and insulators for a wide variety of substrates and may be employed in a variety of coatings and castings. Processes for preparing cured plastisol compositions from the disclosed free radical-curable compositions are also provided.

Abstract: A kitchen article having a body, the body having a bottom sidewalls, a supporting structure formed in the body for supporting a kitchen implement over a top of the body, a bowl formed in an upper portion of the body, a spout formed at one location in an upper portion of a wall of the bowl and extending to a lip in the exterior of the body, and a chamber below a lower surface of the bowl and above the body. The body has provision therein for access to the chamber, the chamber being large enough to accommodate an implement of the proper size to fit on the supporting structure.

Abstract: An introducing needle having two lumens is disclosed. The lumens originate at the sharpened end of the needle in a parallel relationship. The first lumen is rectilinear along the entire longitudinal length of the needle and is adapted to engage a syringe barrel at the needle's hub end. The second lumen is rectilinear along the substantial longitudinal length of the needle and diverges from the first lumen at the needle's hub end. In operation, after a blood vessel is punctured by the sharpened end of the needle, a "flash" of blood is drawn through the first lumen and a guidewire is thereafter inserted through the diverging second lumen without disengaging the syringe barrel from the first lumen. In this manner, manipulation of the needle during insertion of the guidewire is substantially reduced, thereby reducing patient discomfort, trauma to the vein, and the possibility of movement of the needle from the initial puncture location.

Abstract: The invention discloses a novel head closure apparatus for shell and tube-type heat exchangers. The disclosed apparatus is substantially resistant to thermal stress cracking in that it has an internal closure chamber configured to withstand and dissipate thermal stresses caused by rapidly changing thermal gradients. The apparatus also provides for full access to the entire interior volume of the head closure and to the entire area of the head closure inner tubesheet surface in order to facilitate maintenance and repairs. The invention also discloses a compact and efficient retaining key apparatus for constraining the end-cover of a cylindrically-shaped head closure member against internal working pressures. The apparatus enables substantial reductions in the masses of the retaining keys, the head closure member, and the end-cover, which results in the head closure apparatus being simpler and more economical to manufacture and maintain.

Abstract: An improved process for coating an inert substrate, such as braided glass fiber sleeving and inert substrates of other materials and shapes, wiht a polymeric material such as a polyacrylate, a polyvinyl chloride, a silicone rubber, or a polyfluorocarbon, said method comprising the steps of: formulating an emulsion of the polymerizable material in water or other suitable polar phase; thickening the emulsion through the addition of an inert, finely-divided, particulate, hydrophilic inorganic oxide substance to a viscosity in the range of from about 35,000 to about 500,000 centipoises; applying the thicknened emulsion in the form of a uniform coating of desired thickness to the sleeving or other inert substrate; passing the coated substrate through a microwave energy chamber and subjecting the thickened emulsion coating to microwave energy of a frequency, at a power density, and for a peirod of time sufficient to substantially devolatilize, or dry and coalesce, said emulsion; and subjecting the devolatilized coa

Abstract: Herein is disclosed a method for agglomerating finely-divided particulate material of the types found in flue dusts from electric steel-making furnaces and the like, comprising introducing the dry flue dust together with about 8 to 12 percent by weight of a suitable binder such as water into the inlet end of a screw conveying device so configured and operated as to provide for a retention time for the mixture of binder and particulate material in progressing from the inlet to the outlet of about 15 to 60 seconds.

Abstract: An aqueous, biologically-compatible, reversible, oxygen-carrying system comprising a novel metallated porphine-carbohydrate-fatty acid complex, particularly a novel tetra-(p-carboxyphenyl)porphine-iron(II)-dextran-octanoate complex, useful as a synthetic respiratory pigment, and a method for preparing same. The complexes may be dissolved in a suitable electrolyte and used as a substitute for red blood cells.

Abstract: A system, method and apparatus for converting solar energy into heat and/or shaft work and employing two working fluids in admixture is described. One fluid has a relatively low boiling point and is capable of being readily converted to a vapor at low, system pressure. The other fluid has a relatively high boiling point and is not capable of being readily vaporized at low, system pressure. The mixture of fluids is passed through a solar energy absorber or collector where the fluids are heated, the lower-boiling fluid undergoing conversion at least in part to the vapor phase and the higher-boiling fluid remaining in the liquid phase. The heated fluids are passed into a disengaging zone where the vapor phase is separated from the liquid phase. Thereafter, the liquid phase is passed to an energy storage zone and the vapor phase, which consists entirely of the lower-boiling fluid, may be fed to a gas motor to generate useful shaft power.

Abstract: The branches of a furcated cylinder are splayed by a tapered plug inserted therebetween. To securely hold a circular fabric cutter in concentricity with the cylinder, the branches or fingers are placed within the cutter and then driven apart by further insertion of the tapered plug. One end of the cylinder is suited for connection with a rotating chuck. Interchangeable plugs facilitate the holding of various sizes of cutters.

Abstract: A new and distinct short-day cultivar of strawberry designated as "Grace" which is characterized by its capability of earliness, high yield, and good flavor. The plant produces fruit that are medium conic in shape with a slightly pointed tip and which are bright red in color. This cultivar is adapted to growing in the major fruit production areas of Florida.