Abstract: Disclosed are low expansion, chemically resistant, ceramic articles containing keatite as the principal crystalline phase. The articles are prepared from compositions in the Li.sub.2 O.Al.sub.2 O.sub.3.SiO.sub.2 field. In preparing this ceramic article, a glass having the desired composition is formed into the appropriate shape by molding the molten glass, compaction and sintering of glass particles or by other conventional glass and ceramic forming processes. The article thus formed is then crystallized to keatite solid solution by an appropriate heat treatment followed by acid leaching in a strong but diluted aqueous acid to produce a ceramic material having the hydroxy aluminosilicate crystalline structure. The hydroxy aluminosilicate ceramic article is then thermally dehydrated to produce a ceramic article containing keatite as a crystalline phase together with mullite with or without the presence of other phases such as amorphous or glassy SiO.sub.2, quartz and nucleants.

Abstract: A foaming sealant or cement for use in securely joining shaped thermally crystallizable glass bodies and shaped glass-ceramic bodies previously formed by thermal in situ crystallization of thermally crystallizable shaped glass bodies wherein the sealant consists essentially of from (1) about 80-99% by weight of a glass frit having SiO.sub.2, Al.sub.2 O.sub.3, Li.sub.2 O and usually CeO.sub.2 as the essential ingredients, (2) about 2-15% by weight of ZnO powder when the mole percent of the CeO.sub.2 in the glass frit is below about 2, and (3) an amount by weight of SiC powder sufficient to be decomposed during the firing of the sealant to form gas which, in turn, foams the sealant. Such sealant can be fired and bonded to shaped glass-ceramic bodies at temperatures below 2192.degree. and as low as 2150.degree. F and even lower. The sealant is dimensionally stable when subjected to high temperatures over long periods of time and has an average coefficient of thermal expansion of from about -15 .times. 10.sup.-.

Abstract: Food cushioning means are provided to cushion and protect a stack of uniformly-shaped units of food product, such as chips, crackers, or cookies, that are shipped in a cylindrical container. A unique, inverted, cup-shaped bottom cushioning member is provided to support and cushion the stack of food product from the bottom. A sleeve of corrugated foam plastic is utilized to surround and cushion the sides of the stack of food product. In another embodiment, the invention provides an integral bottom and side cushioning member, which comprises a unique corrugated foam sleeve with a pair of tab portions folded inwardly near the bottom of the sleeve to support the stack of food product from the bottom.

Abstract: A system for the multiplex addressing of a colloidal light valve array. An array of individual sites or cells is made using a colloidal light valve (CLV) material which has a light transmission curve that is a function of the frequency of the applied potential across the site or cell. The array is generally defined by rows and columns of electrical conductors. The intersections of the rows and column define sites or are at individual cells. Any one site may be uniquely addressed by supplying this site with a high frequency electrical signal and a low frequency electrical signal during one time period and with two low frequency electrical signals during a second time period. Non-selected or non-addressed sites are supplied with combinations of high frequency and low frequency electrical signals during the two time periods to force the average light transmission valve of these nonselected sites to be the compliment of the average light transmission of the addressed site.

Abstract: Disclosed is a method of producing hard glass-ceramics from a melt of basalt enriched with one or more of CaO, MgO and SiO.sub.2 to achieve defined ratios of certain oxides in the batch, cooling the melt to a glass and thermally in situ crystallizing the glass to a highly crystalline glass-ceramic product containing a diopside solid solution as the principal phase.

Abstract: A method for powder coating of articles with an organic polymeric material. Articles to be coated, preferably glass containers, are transported by a first conveying mechanism through a pre-heat oven wherein their temperature is raised to a level above ambient temperature. The preheated containers are then transferred to chucks of a second conveying mechanism which carry the containers through a powder spray apparatus wherein the organic polymeric material is applied to the container. The chucks of the second conveying mechanism are cool and any oversprayed material will not adhere thereto. After spraying, the containers are again heated to cure the sprayed-on powder coating to form a filmlike layer on the container. The containers are then cooled below the softening point of the organic polymeric material and released from the second conveying mechanism for further handling.

Abstract: Disclosed is a method for chemically immobilizing proteins, particularly enzymes, containing in their molecular structure specified proportions cystine and cysteine groups on a support to form a biologically active composite having prolonged service life by the in-situ polymerization of the protein.

Abstract: A process is provided for melting glass forming ingredients by supplying all, or at least part, of the total heat required for such melting from the combustion of a combustible fuel which is an admixture of particulate coal and oil. The melting operating can be accomplished without any difficulty of temperature control and with no adverse effects on the quality or composition of the final glass. Excellent results are obtained employing, for example, a combustible fuel mixture of about 40% by weight of particulate coal having a particle size less than about 200 mesh and about 60% by weight of Number 2 fuel oil.

Abstract: A sealing glass composition comprises a PbO-containing glass frit, two particulate refractory fillers having controlled particle size distributions, and optionally at least one additive to prevent the chemical reduction of the PbO when the frit is fired in the presence of reducing conditions. The sealing glass composition is useful as a package sealant. It is especially useful as a solder glass for sealing a face plate portion to a funnel portion of a color television picture tube at temperatures of about 400.degree. C. A particulate glass composition for use in preparing the sealing glass composition, a sealing glass paste and methods of using the sealing glass and paste are provided.

Abstract: A method of and apparatus for blow molding a plastic article by forming a parison into a blown pre-form and then blowing the pre-form into the final article. The final blow mold is fixed, and the pre-form mold is movable from a parison-forming location to a pre-form blowing location. An arcuately movable turret carries a plurality of blow tubes sequentially registerable with the pre-form blowing location and the final blow mold location, these tubes are utilized for the blowing operation and also transfer the preform to the final mold location. The turret thus traverses the two blowing locations, but not the parison-forming location. The turret may also traverse additional thermal conditioning or ejection stations, or the like, if desired. The turret may also move vertically for mold clearance, if necessary. The turret can oscillate between the two blow mold stations or can rotate through a complete 360.degree. traverse, as required by the number of indexing positions desired.

Abstract: An apparatus for forming glass containers wherein the glass is expanded to its final shape in a blow mold. A blowhead is brought onto vertical registry with the blow mold cavity. In the conventional Hartford I.S. forming machine, the mechanism for moving the blowhead onto and out of registry with the blow mold is pneumatically operated. The blowhead and the arm that supports the blowhead or blowheads is of considerable mass, and when an operator is required to change blow molds, or in some instances repair mechanisms which are at the blow mold location, it is necessary to maintain the blowhead in its up position. Air lockout systems have been used in the past but have not been foolproof. Accidents may occur. The present invention utilizes a mechanical lockout arrangement which locks the piston rod in its elevated position to avoid any possibility of the blowhead dropping.

Abstract: Apparatus for sensing the presence of an article. One end of a very high impedance resistor is held at a fixed voltage. The other end of the resistor is connected to a sensing element. When an article is placed close enough to the sensing element, a form of capacitive coupling to ground is created which causes a minute current flow through the resistor. This causes a small voltage drop across the resistor. The current and voltage difference are presented to a voltage follower which effectively amplifies the current. Sample and hold circuits furnish a signal which indicates the actual voltage level. A minimum level detector measures the voltage level with no article present. This level is compared with the sample and hold signal, and an article present signal is generated if the sample and hold signal is a pre-selected amount greater than the minimum level.

Abstract: This invention relates to a method of moving a plurality of two-piece canning jar-type lids in series to a feed mechanism which will single-line the caps and maintain them in assembled position. The single-lining is arranged to approach the path of movement of a plurality of containers also moving in series on their side with their axes horizontal. The caps are brought, under gravity and at an angle, to the path of movement of the finish or neck of the jars such that the finish of the jars or containers individually engage and move the caps from the supply of caps. The caps are then retained on the finish of the jar and by reason of the movement with the jar, in a linear path, the caps are rotated and thereby threaded onto the finish of the containers.

Abstract: A method is disclosed of melting laser glass compositions that includes double melting steps as follows:I. melting the glass composition in a ceramic container in an oxidizing atmosphere in which the partial pressure of oxygen is greater than about 10.sup.-.sup.3 atmospheres; andIi. melting the resultant melt of Step I in a platinum container containing at least about 50% by weight of platinum in a reducing atmosphere in a buffered gas mixture in which the partial pressure of oxygen is less than about 10.sup.-.sup.3 atmospheres for a time sufficient to obtain a homogenization of the glass with stirring and still have the ingredients of the glass composition in an oxidized state to thereby produce a laser article substantially free from detrimental, lower-valence state ingredients, such as Fe.sup.+.sup.+, and a minimum of platinum inclusions in the glass.The method may also include double steps as follows:I.

Abstract: An improved ball dispensing package combination for liquid cosmetics and the like. A ball is held in place in a fitment which is attached to the finish portion of a container for the product to be dispensed. The ball is allowed to move freely within the fitment to allow dispensing. The total package is completed by a closure which engages threads on the exterior of the finish portion. The closure has an internal downwardly depending sealing ring which engages the upper rim of the fitment as the closure is tightened. Simultaneously, the lower portion of an internal cavity of the closure engages the ball at its maximum chordal dimension. The ball does not touch the upper portion of the internal cavity, so any material on the ball does not tend to stick to the closure.

Abstract: A multiple tube solar energy collector having a diffusely-reflecting surface positioned behind the collector tube array. Multiple double walled collector tubes are connected into a manifold for circulation of a working fluid through them. The working fluid is heated by solar energy as it flows through the tubes. A diffusely-reflecting surface behind the tubes reflects back to the tubes both direct beam and diffuse solar radiation which fails to strike the tubes directly. This system allows efficient operation of a tubular solar energy collector without requiring focusing or polished reflecting surfaces. The tubes are preferably no more than four tube diameters apart, on centers, and no more than four tube diameters above or separated from the diffuse-reflecting surface.

Abstract: Disclosed is a process for depositing and immobilizing an enzyme by causing an aqueous dispersion of said enzyme to flow through an inert, inorganic, porous, sorptive, dimensionally stable, fluid permeable supporting matrix to form a biologically active composite. The matrix is sufficiently porous to be enzyme and substrate permeable. Preferably, the supporting matrix is ceramic and is formed by compacting and sintering refractory oxide powders such as alumina.

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: Thermally crystallizable glasses of theA -- Nb.sub.2 O.sub.5 --GeO.sub.2 systemwherein A is K.sub.2 O, Li.sub.2 O or a mixture of K.sub.2 O and Li.sub.2 O and glass ceramics made therefrom are described. Transparent and opaque glass ceramics may be obtained. The glass ceramics are particularly suitable for use in printed optical circuits, fiber optics, gradient refraction optical lenses and as wave guides.

Abstract: Disclosed are B.sub.2 O.sub.3 -containing glass-ceramic bodies made by in situ thermal crystallization of glasses and useful as a host for diffusion doping of semiconductors by the vapor phase transport of B.sub.2 O.sub.3 to the semiconductor from the glass-ceramic which in mole percent consists essentially of over 40 and up to 60 SiO.sub.2, 10 to 30 Al.sub.2 O.sub.3, 20 to 40 B.sub.2 O.sub.3 and 3 to 20 alkaline earth oxides including 1 to 15 BaO wherein the ratio of Al.sub.2 O.sub.3 to alkaline earth oxides is from 1.5 to 4.