Abstract: A sealing apparatus for use in a compressor suction or pressure plate valve having a seat member with a plurality of fluid passage ports therethrough. The sealing apparatus comprises a movable plastic plate member having a like plurality of sealing members for juxtaposed sealing engagement with the plurality of fluid passage ports and at least one projection integrally formed on at least one of the sealing members and extending outwardly from the plate member in a direction away from the seat member for receiving a resilient flat spring member urging the plate member against and sealing the fluid passage ports.

Abstract: An apparatus for sensing operational status of a system including a television set includes a reference source, means for determining a level of operation of the system, and means for comparing the level of operation of the system to the reference source.

Abstract: A process for the concentration of ethylene oxide in an impure solution thereof including adding the solution and steam to a distillation column, recovering the gaseous stream therefrom containing ethylene oxide, and progressively condensing the steamed solution in at least two heat exchangers arranged in series, with the absolute pressure of the distillation column and of the exchangers being between about 1.5 and 6 bars and the temperature of the cooling fluid of the last exchanger being between about 5.degree. C. and a maximum temperature 5.degree. C. below the temperature of condensation of pure ethylene oxide at the pressure used.

Abstract: A computerized open outcry exchange system for transacting sales of a particular futures commodity contract by members of a futures trading exchange wherein bids to purchase or offers to sell the particular contract are made orally by the members through remote terminals having voice entry data inputs and the exchange computer automatically matches orally entered offers and bids to complete the transaction.

Abstract: An oligomer of the formula ##STR1## in which R.sub.1 =H or CH.sub.3 ;R.sub.2 =C.sub.t H.sub.2t in which 0.ltoreq.t.ltoreq.18;Z is selected from C.sub.2 H.sub.4, C2H2 and ##STR2## in which 2.ltoreq.d.ltoreq.16; m is an integer such that 1.ltoreq.m.ltoreq.3;R.sub.3 =C.sub.t' H.sub.2t'+1 in which t'.gtoreq.1 and 8.ltoreq.t+t'+2m.ltoreq.22n and n' are identical or different integers, such that 2.ltoreq.n+n'.ltoreq.20;b is an integer equal to 0 or 1; anda is an integer ranging from 2 to 500. The invention also comprises the method of making the oligimer and thermoplastic films containing the same as well as the resultant thermoplastic films.

Abstract: An improved process for separating ethylene-oxide from formaldehyde and acetaldehyde in contaminated ethylene oxide, the process involves introducing the contaminated ethylene oxide into a reflux column and distilling the contaminated ethylene oxide under conditions such that the fluid stream leaving the bottom of the reflux column contains the water present in the contaminated ethylene oxide and the ethylene oxide in amounts corresponding, on a weight basis, to 0.15 to 3 times the weight of the water, and the ethylene oxide resulting from the separation of the formaldehyde and acetaldehyde leaves the column at its top.

Abstract: The process for the cyclization of orthobenzoylbenzoic acid into anthraquinone comprising heating orthobenzoylbenzoic acid in the solid phase at a temperature between about 300.degree. C. to 400.degree. C. in the presence of a superactive bleaching earth. The invention also comprises a process for the separation of phthalic acid and any phthalic anhydride impurities from orthobenzoylbenzoic acid prior to its cyclization into anthraquinone through the use of said earth at a temperature from 200.degree. C. to 250.degree. C.

Abstract: A distribution head having an inlet for accepting a stream of fluid plastic and an outlet for discharging the stream, two pairs of discrete channels in the distribution head extending from the input to the output for splitting the streams into corresponding discrete substreams, selected ones of the channels being of predetermined different lengths to provide lateral mixing of the stream as it passes through the head. The invention also includes a combination of the distribution head and a connected extrusion tool and the process of making homogeneous plastic articles, particularly pipes.

Abstract: A catalyst composition for the polymerization of propylene comprising a catalytic solid comprising a titanium halide and a magnesium halide and isoprenyl aluminum associated therewith and the process of polymerizing propylene using such catalyst.

Abstract: A cementing composition for forming a low density cement slurry comprising a hydraulic cement and shot coke.

Abstract: A mix for forming a carbon-bonded refractory comprising from about 8 to 30 wt. % of a high purity carbon, about 0.1 to 1 wt. % of aluminum metal, magnesium metal, or a mixture thereof, and the balance a high purity magnesite, and for each 100 wt. % of said magnesite, carbon, and metal, a carbonaceous bonding agent in an amount sufficient to bond the mix; said carbon containing at least about 98% carbon and said magnesite containing at least about 98% MgO, and containing less than about 0.03% boron oxide, less than about 0.3% silica, and having a CaO/SiO.sub.2 weight ratio above about 2, and the resultant carbon-bonded refractory shapes and liners for metal processing equipment, especially BOF, made from such shapes and the method of increasing the life of liners for such equipment.

Abstract: Polyarylalkane oligomer compositions containing essentially of a mixture of isomers of benzylcumene and its higher homologues and a mixture of isomers of bis(isopropylphenyl)phenylmethane; the method of making such compositions by first reacting chlorine with toluene, xylene, or a mixture of toluene and xylene in the presence of a radical generator, removing the unreacted toluene and/or xylene, and then subjecting the reaction product to the action of an inorganic halide or of an inorganic acid in the presence of a benzene-related compound; and microcapsules containing color-forming material wherein the compositions are used as solvents for the color-forming material.

Abstract: A refractory mix for forming an in situ magnesium aluminate spinel brick consisting essentially of about 65 to 95 wt. % magnesite having an MgO content of at least about 92 wt. % and, correspondingly, about 35 to 1 wt. % calcined bauxite having an alumina content of at least about 83 wt. % and a silica content of no more than about 7 wt. %, the total silica content of the mix being no more than about 4 wt. % and a magnesium aluminate spinel refractory shape prepared by pressing and firing the above refractory mixture. The invention also comprises the process of forming the refractory.

Abstract: An agricultural machine and method for applying and securing a plastic film onto a seed bed. The machine includes a cutter that severs the plastic film at the end of a row or other area for which covering is desired, while covering the severed ends so as to anchor them to the soil.

Abstract: A process for the preparation of vinyl chloride homopolymer and copolymer pulverulent powders suitable for the preparation of plastisols with improved rheological properties, comprising polymerizing to form a vinyl chloride homopolymer or copolymer latex and drying said latex by atomization, the temperature at which the latex to be subjected to drying by atomization is employed being at least equal to 40.degree. C. and being lower than the degradation temperature of said homopolymer or copolymer, and the resultant vinyl chloride polymer pulverulent powders.

Abstract: The present invention comprises a haloacetoxyalkyl ether having the formula: ##STR1## wherein R is H or a C.sub.1 -C.sub.4 substituted or unsubstituted alkyl group, R' is H or a C.sub.1 -C.sub.3 group, and X is chlorine or fluorine; aroyloxymethyl ethers having the formula:R--COOCH.sub.2 --O--CH.sub.2 --OOC--Rwherein the R is p-NO.sub.2 C.sub.6 H.sub.4, halogen substituted C.sub.6 H.sub.4, or other aromatics; the method of making such ethers and monoquaternary salts; and the method of alkylating amines, pyridines, or acetals or pyridine derivatives with such ethers to form quaternary ammonium salts; particularly HI-6, HGG-12, Toxogonin, and SAS-128.

Abstract: A pressurized tundish for controlling a continous flow of molten metal characterized by having a pair of principal compartments, one being essentially unpressurized and receiving molten metal introduced thereto, and the other being adapted for maintaining a controlled gaseous pressure over the surface of the fluid metal therein, whereby, by controlling the pressure within the pressurized chamber, metal exiting from the tundish is made to flow continually and at a controlled rate.

Abstract: An immunochemical assay to determine the presence or concentration of antigen or antibodies in a fluid, comprising: (a) forming a ternary complex of a first labelled antibody or antigen, a second labelled antibody or antigen, and the antigen or antibody to be determined; and (b) detecting a signal produced in the presence of at least one substrate, by an interaction between said first label and said second label, enhanced by their proximity to each other bound to the antigenic substance.

Abstract: An extruded thermoplastic polymer conduit having a conduit wall of substantially uniform crystalline morphology through the entire thickness thereof free of any oriented surface zone and the process of making such conduits.

Abstract: A rotary fluid manipulator utilizable as a diagnostic device includes a porous body having fluid passages defined therein by fluid blocking means in the porosities of the body such as openings or slots in the body or compaction of areas of the porous body to define fluid passages therebetween. Various substances or binding partners such as receptors, immunoassay or other assay test materials and test specimens can be deposited on the porous body to permit various types of test to be made by rotation of the manipulator to cause conjunctive centrifugal and wicking induced flow of fluids deposited thereupon.