Abstract: A filter network particularly suitable for construction in micro-electronic circuitry for application in telephony systems is formed by simulating inductance in a circuit arrangement incorporating only resistance, capacitance and amplifying elements. The symmetry of the circuit arrangement and coupling into the filter network simplifies fabrication and reduces the number of amplifiers previously required to perform similar filter functions. The filter networks may be built up by coupling a chain of circuit arrangements each including two unity gain amplifiers having a series resistor/capacitor feedback network and a non-inductive element interconnecting the two amplifier feedback networks.

Abstract: A digital phase locked loop is described which includes a first gate through which incoming pulses are passed to subsequent data processing circuits, a second gate through which reference pulses having a predetermined pulse repetition rate equal to the repetition rate of the wanted incoming pulses are fed to a reset input of a counter such that each reference pulse resets the counter to zero, and a clock generator for feeding clock pulses to the counter. The counter is thereby repeatedly stepped through a predetermined cycle, the nominal period of the counter cycle being equal to the nominal period of the reference pulses, and means responsive to the number stored in the counter reaching a first predetermined value then latches both the first and second gates open for a predetermined relatively short period in each counter cycle during which the counter passes through its zero state.

Abstract: A synthetic resin composition which comprises 20 to 50 parts by weight of olefinic resins, 10 to 40 parts by weight of vinyl chloride resins, and 70 to 10 parts by weight of alumina trihydrate having a gibbsite crystal structure whose average particle size is 30 microns at most.

Abstract: Glass or like stemware is manufactured in one piece by part-forming an article having a glob of material in the position where the stem is required, placing the glob between rollers which have a shape defining the required shape of the stem, and rotating the glob between the rollers while advancing the rollers inwardly. Subsequently a foot forming member is axially advanced towards the glob to apply pressure against the glob to form a radially-extending foot.

Abstract: An antistatic polyurethane foam contains quaternary ammonium salt as an antistatic agent. The quaternary ammonium salt is added either to a raw material for polyurethane foam or to a prepared polyurethane foam by causing the foam to be impregnated with a solution containing the quaternary ammonium salt and drying it.

Abstract: Patterns described with inks or colors on the surface of thermoplastic resin articles having an interconnected fine open-cell structure in the surface layer thereof are rendered durable without displacement or deformation by heating under pressure the pattern described surface to a higher temperature than that at which said thermoplastic resin becomes fluid to cover the pattern-bearing surface with a thin film formed from the original resin constituting said surface layer.

Abstract: Resin compositions of high adhesivity which comprise (A) ethylene-vinylacetate copolymer or mixture of said copolymer with polyethylene, (B) chlorinated or chlorosulfonated polyethylene, (C) unsaturated carboxylic acids maintaining solid at room temperature and (D) organic peroxides or these components blended with phenolic compounds and/or acid-acceptors.

Abstract: An assembly comprising a holder having one open end, a double ended needle fixed to a closed end of the holder and an adapter detachably insertible into the holder, the use of the adapter of the same or varying size permitting an exchange of one fluid sample container or medicament container for another with the needle pierced into the blood vessel of the human body for injection or blood collection.

Abstract: An apparatus for manufacturing a tubular film from thermoplastic resin which comprises an extruder fitted with an annular die; a mechanism for introducing air into a tubularly inflated film; a cylindrical water cooler which consists of an annular cooling water reservoir disposed at the upper part, a cap member covering said water cooling reservoir, a vacuum sizing chamber positioned below said cooling water reservoir, an annular cooling water discharging chamber located below said sizing chamber and an annular vacuum suction chamber bored with a suction port so as to remove residual water, the underside of said cap member and the upper side of said sizing chamber defining an annular passageway of cooling water; a mandrel received in the cylindrical water cooler so as to internally cool the tubular film; and a film take up mechanism.

Abstract: A multi-rod broadband antenna consisting of a plurality of elementary radiators arranged as directrices of a cylinder each consisting of a conductor surrounded with a ferromagnetic core designed so that each one has a resonant frequency value different from any other one, the resonant frequency values being related so as to form a series. The arrangement of the rods around the cylinder is such that the frequency values of two adjacent rods do not correspond to two adjacent terms of the series.

Abstract: In a conjunction with a glassware press-molding machine, an arrangement of Bernoulli nozzles is employed to remove the articles from the mold, complete the forming of the articles, cool them, heat treat them and transfer them to a conveyor. The cooling and heat treating is effected by air from the nozzle combined with an airflow directed onto the underside of the articles while supported by the Bernoulli nozzles.

Abstract: A dielectric optical waveguide can be made by forming a bundle of rods in which a single rod made of glass suitable for forming the core of the dielectric optical waveguide is surrounded by three rods made of a glass suitable for forming the cladding of the dielectric optical waveguide. The bundle of rods is heated and drawn down to a suitable size. By increasing the number of rods in the bundle it is possible to make a dielectric optical waveguide with a plurality of cores.

Abstract: A sheet feeding mechanism is described in which the sheets in a batch of sheets are sorted into different output stackers. The sheet feeding mechanism includes a buffer store for receiving and temporarily holding a batch of sheets while a predetermined batch value is verified, and a batch verifier responsive to the passage of each sheet along a given path for comparing a measured batch value with a reference value to derive an error signal. The sheets are extracted from the store one by one and a sheet sorting mechanism sorts the sheets into different output stackers. The sorting mechanism includes means responsive to the output of the verifier for segregating the sheets of the batch extracted from the store whenever the error exceeds a predetermined value.

Abstract: A pump member for molten metal manufactured from a sintered mass including aluminium nitride as a major component and 0.1 to 10% by weight of at least one oxide selected from the group consisting of oxides of Group IIIA elements of the Periodic Table.

Abstract: An air-noncontact type blood sampling assembly has a blood sampling container consisting of a tubular body having at one end an elastomeric stopper sealed by a sealing member and opened at the other end and a columnar gasket having a plunger at the rear portion and slidable within said tubular body, and a cylindrical transparent holder having a piercing needle at the forward end adapted to have said sampling container inserted thereinto. Said blood sampling container is previously charged with a larger amount of blood anticoagulant than required.

Abstract: Linings for furnaces or ovens are made by cutting a sheet of refractory fibrous material having fibers extending longitudinally parallel therein into strips that extend laterally, then turning the strips through 90.degree. so the fibers are end-on, compressing the fiber end-on strips together to form a hot-face surface and attaching the strips at their base to a support.

Abstract: Water-reducing additives for ceramic material, and especially for cement paste, mortar or concrete, which comprise a phenolic compound having a sulfo radical or a sulfomethyl radical, wherein the hydrogen atoms of acidic radicals in part of said phenolic compound molecules are substituted by atoms of sodium, potassium or calcium.