Abstract: A close nesting, single element, easy-opening tamper-proof closure for wide-mouth containers, especially externally beaded, round, nestable cup-like containers formed from paper or plastic, the closure comprising a central panel adapted to substantially span the mouth of the associated container and formed from paper, a non-shrinkable plastic material, or the like, and further comprising a frusto-conically shaped skirt formed from a double-ended blank of a plastic material which is highly oriented in the direction extending circumferentially of the closure, the overlapped ends of the blank being heat sealed or otherwise joined to one another inwardly of the outermost of the ends thereof, the inner smaller diameter of the skirt being adhesively joined to the outer periphery of the central panel, the skirt being shrinkable, upon the application of heat thereto when the closure is in place over the mouth of a filled container, to shrink into tight engagement with the mouth of the container, the outermost free en

Abstract: Thermoplastic adhesive polycarbonamide-ester compositions having molecular weights ranging from about 2000 to 7000, a viscosity of about 2000 to 5000 centipoise at 160.degree.C. and a tensile shear strength of about 75 to 140 pounds per 1 inch .times. 1/2 inch lap, which are useful in the formation of creep resistant adhesive bonds in product assembly between laminae of relatively impervious materials such as glass, metals and certain of the plastics, e.g. polyethylene. An outstanding product assembly of this invention is a container of composite construction having a glass envelope of thin walled construction in the shape of an inverted light bulb bonded to a plastic cup-like base member with the above described thermoplastic adhesive composition.

Abstract: A food service tray which allows selective heating and/or cooling of meal components carried thereby. A base member of a thermally insulating material has a plurality of compartments divided into serially connected flow chambers having inlet and outlet openings. Food receptacles made of a thermally conductive material carry the meal components and are inserted into the compartments. Thermally insulating lids then cover the food receptacles. A refrigerated fluid under pressure may be passed through all or part of the flow chambers to thereby maintain the contents of the food receptacles therein in a chilled condition. A heated fluid under pressure can then be passed through selected flow chambers to thereby rethermalize or heat the contents of the food receptacles in the heated flow chambers to a proper serving temperature.

Abstract: Method and apparatus for providing a completely encircling coating of an organic polymeric material on a localized region of a glass container. At a coating station, a glass container is rotated through at least 360.degree.. During the rotation, a material application head furnishes fluid organic polymeric material to the surface of the localized region of the glass container which is to be coated. Stop members hold the application head a fixed distance from the localized region and a doctoring edge of the application head helps form a uniform layer or coating of the organic polymeric material completely encircling the localized region.

Abstract: A method is disclosed for forming stannic tetra-(tertiary-alkoxides) wherein the alkoxide groups contain from 4 to 8 carbon atoms, which process includes starting with a tin tetrahalide and involves reactions with an alkylamine and a tertiary alcohol. The resulting products are volatile tin compounds and find utility as a source of tin oxide. For example, the compounds may be hydrolyzed with water and then pyrolyzed to provide a source of ultra high purity tin oxide.

Abstract: Alkoxy ethoxides, for example 2-methoxy ethoxide, of aluminum and magnesium or aluminum and calcium, are provided. These compounds are of the formula MAl.sub.2 (O--CH.sub.2 --CH.sub.2 --O--R).sub.8 wherein M is calcium or magnesium and wherein R is an alkyl of 1 to 4 carbon atoms; they are liquids at about 25.degree. C. and about 1 atmosphere of pressure and are produced by reacting aluminum and magnesium or calcium with mono-alkyl ethers of ethylene glycol. Methods for hydrolyzing the compounds to obtain oxides of the formula MgAl.sub.2 O.sub.4 and CaAl.sub.2 O.sub.4 are disclosed. For example, magnesium aluminum octa-(2 methoxy ethoxide) is produced, using ethylene glycol monomethyl ether (methyl "Cellosolve") as a reagent; the material is hydrolyzed and heated to form MgAl.sub.2 O.sub.4.

Abstract: A transparent, activated, nonparticulate alumina with a total porosity of about 63% which consists of a unique pore morphology and size distribution and is thermally stable up to about 1,200.degree.C. at which temperature it can be nondestructively converted to alpha alumina is disclosed as well as a method of preparing said alumina by hydrolyzing aluminum alkoxides to form a particular sol which is essentially clear to the naked eye and the gel of which retains its integrity during drying and pyrolysis. The alumina thus produced is useful as a catalyst, absorbent and desiccant. In addition, a method of preparing the intermediate clear colloidal sol or gel consisting essentially of aluminum monohydrate is disclosed. This intermediate can be used to coat various substrates.

Abstract: A transparent, activated, nonparticulate alumina with a total porosity of about 63% which consists of a unique pore morphology and size distribution and is thermally stable up to about 1200.degree.C. at which temperature it can be nondestructively converted to alpha alumina is disclosed as well as a method of preparing said alumina by hydrolyzing aluminum alkoxides to form a particular sol which is essentially clear to the naked eye and the gel of which retains its integrity during drying and pyrolysis. The alumina thus produced is useful as a catalyst, absorbent and desiccant. In addition, a method of preparing the intermediate clear colloidal sol or gel consisting essentially of aluminum monohydrate is disclosed. This intermediate can be used to coat various substrates.

Abstract: An improved memory for a glass container inspection machine. In one common form of glass container inspection machines, the containers are indexed through multiple stations where they are inspected for various attributes. Rejection of defective containers can take place only after all of the inspections have been made. The information relative to a defective container is placed in a master-slave type flip-flop uniquely associated with a particular inspection station. Information is then shifted through a group of series-connected master-slave type flip-flops in synchronism with the movement of the container until the container, if defective, reaches a location where it can be rejected. The information is moved or clocked by a generated clock pulse that has a rise time that is faster than the information transfer time through the flip-flops.

Abstract: A convenience closure having a removable central panel. A convenience closure is attached to a can end to seal the can. The closure includes a removable central panel; a panel fold with an endless severing line formed in its upper surface; a chuck wall fold which has a nose portion that extends radially inwardly farther than the severing line and overlies the severing line; and a pull tab, attached to the central panel, which has a nose portion that extends to the severing line. The panel fold includes a nose portion that extends to a position adjacent to and under the severing line. To remove the central panel, the pull tab nose is depressed to break the severing line. Then, the pull tab is moved upwardly to complete the breaking of the severing line and remove the central panel. Breaking the severing line forms two sharp raw edges; one lies under the nose of the chuck wall fold and is thus protected. The other raw edge is formed adjacent the nose of the panel wall fold.

Abstract: There is provided a coating process, and compositions for practicing the process, wherein organic polymeric substrates, and especially polycarbonates and acrylics, are coated with a coating composition which is curable in a short period of time to provide the substrate with a hard, abrasion-resistant, mar-resistant, chemical resistant and acetone-resistant, strongly adhered coating. The coating composition employs the use of effective cure promoting amounts of a methanol and lower alkyl alcohol-melamine-formaldehyde partial condensate reaction products which are added to organopolysiloxanes made from methyltrialkoxysilane, wherein the organopolysiloxanes are made by a prescribed technique; the alkoxy groups contain one to six carbon atoms and the alkyl alcohol is a C.sub.2 to C.sub.4 alkyl alcohol or mixtures thereof.

Abstract: Mechanical self-centering device to center a moving web of thin sheetlike material such as paper, plastic, metal or the like to prevent the web from drifting from side to side as it moves from one mechanical device, such as an unwind stand, to another mechanical device, such as a printing press, coating apparatus, a web splicer, a machine to fabricate finished products from the web such as a cup-making machine, or the like. The self-centering device comprises a roller extending transversely across the path of travel of the web and adapted to rotatingly contact the moving web on one side thereof. The roller is rotatingly mounted in a bracket which is free to pivot about an axis which is spaced from, and which extends generally parallel to, the path of travel of the web.

Abstract: An improved "bird-swing" detector which has a downstream rejection system. An optical type bird-swing detector inspects glass containers as they move therethrough on a conveyor. A container exhibiting a bird-swing defect causes generation of a rejection signal. An oscillator may be set at a frequency in synchronism with the travel of the containers. A wave-shaping circuit forms the output of the oscillator into square waves at the frequency of the oscillator. A flip-flop has one input connected to the rejection signal and another input terminal connected to the wave-shaping circuit. The flip-flop output is connected to a multi-stage shift register. The signal from the wave-shaping circuit clocks the shift register. The switching of the flip-flop is delayed to allow entry of any information therefrom into the shift register before the flip-flop is reset. A reject or defective container signal is clocked through the shift register in synchronism with the travel of a defective container on the conveyor.