baber/WOPTO huggingface dataset:
Patent GB-863289-A (GB)
Title: Improvements in or relating to electrical control elements affected by tilting
Inventor: SCHNEIDER FREDERICK EDWARD WIL
IPC: G01C9/06
Filed: 1958-12-16
Abstract: 863,289. Transformers and inductors. ENGEL & GIBBS Ltd. Oct. 27, 1959 [Dec. 16, 1958], No. 40582/58. Class 38 (2). An inductor or transformer which may be used to sense the tilt of a gyroscope comprises one or more windings 29 on a straight or curved glass tube 22 in which a magnetic ferrite core 24, which may be a solid or hollow sphere or cylindrical or barrel-shaped, rolls to vary the self or mutual inductance of the coils with change in their tilt. Tube 22 contains a damping liquid, e.g. a silicone oil, and has low-pressure or evacuated expansion chambers, 27, 28. Winding 29 may vary in pitch to show the sense of the core displacement (Fig. 6, not shown) or it may be concentrated so that a small displacement gives a large signal (Fig. 7, not shown). The weakness of the coils' magnetic flux ensures that it does not displace the core.
Patent GB-925747-A (GB)
Title: Improvements in or relating to nuclear reactors
Inventor: FORSYTH GEORGE HOWARD
IPC: G21D5/06
Filed: 1960-11-25
Abstract: 925,747. Nuclear power plant. VICKERSARMSTRONGS (ENGINEERS) Ltd. Nov. 15, 1961 [Nov. 25, 1960], No. 40698/60. Class 39 (4). A boiling-water nuclear reactor is moderated and cooled by light or heavy water or a mixture of these two fluids, and the steam generated in the core is accumulated in a steam space of the reactor before being passed through a circulating system and through the reactor core in order to control the reactivity of the core over the load range of the reactor. The steam space is placed at the top of the reactor a from which the pump b delivers steam to the valve c which divides the steam to either the load line e or the line d. The valve c is controlled so that if the load demand increases the amount circulated through the line d decreases and the line e increases, and vice versa. Thus, the steam on the core is kept approximately constant. The line d circulates steam to the core which is placed in the lower part of the reactor, and more steam is supplied to the centre of the core than to the periphery so that flux flattening is achieved. A mechanism (not shown) is provided for withdrawing the control rods upwardly to adjust for burn-up. This mechanism also ensures that should the steam be unable to pass through the line d then the excess steam is exhausted through the safety valve f and discharge line g. The by-pass valve k provides the " fine control " of the reactor output, for should the pressure in the reactor increase then the opening of the valve k is increased and more steam is admitted to the lower end of the core, thus reducing the neutron flux. The converse occurs should the pressure decrease.
Patent GB-1358218-A (GB)
Title: Electrical meters
IPC: G01R21/133
Filed: 1972-09-04
Abstract: 1358218 A/D converters: watt-hour meters A LANGELLA and G SAVASTANO 4 Sept 1972 40948/72 Heading G4H A watt/hour meter comprises two inputs V1, V2, S1, S2 respectively for signals indicative of the instantaneous voltage and current being consumed, both of which signals are taken through respective potential dividers Pv and Pa and buffer amplifiers Av, Aa to respective integrating circuits each comprising operational amplifiers Ov, Oa with resistive-capacitive feed back, the output of each operational amplifier being taken to threshold circuits COv and COa<SP>+</SP>, COa<SP>+</SP> responsive to supply an output pulse each time the output at the respective amplifiers exceeds a certain value, the circuit COa<SP>+</SP> responding to a positive threshold, and the circuit COa<SP>-</SP> to a negative. The output pulses from circuit COv are taken to a shaping circuit Fv which also has inputs from a clock oscillator OSC and a constant voltage reference source RIF. This circuit responds to each pulse from COv to feed back a pulse of constant timeintegral to the integrator Or input to restore the output thereof to a value below the threshold, the frequency of these pulses from circuit Fv being proportional to the voltage input signal V1, V2. Assuming the current is flaring in a first direction so that the detector COa<SP>+</SP> is active, the output pulses thereof are passed to a circuit Fa<SP>+</SP> which receives inputs from a contact voltage source RIF<SP>+</SP> and the ouput of the circuit Fv via a transformer T. Circuit Fa<SP>+</SP> is adapted to provide an output pulse in response to each pulse from circuit COa<SP>+</SP>, which output pulses are of constant amplitude but of a duration inversely proportional to the frequency of pulses from F v . These pulses are fed back as discharging pulses to the integrator Oa and are counted at N+ whereby the frequency of such count pulses is proportional both to the voltage and current input signals. Thus if these pulses are counted for a known time, the watt-hour value of power consumed is obtained. If the current flows in the opposite direction, detector COa<SP>-</SP> and its associated circuitry is utilized.
Patent GB-1056666-A (GB)
Title: Improvements in or relating to sound signalling devices
IPC: G10K9/15
Filed: 1964-10-07
Abstract: 1,056,666. Electromagnetic horns. V. & E. FRIEDLAND Ltd., G. R. LAWTON and J. DOGGART. Oct. 1, 1965 [Oct. 7, 1964], No. 40952/64. Heading G5J. A warning horn comprises a hard plastics moulding, the central part of which forms a rippled diaphragm 13, and an electromagnetic vibrator unit, mounted on the moulding, made up of a core 24, a coil 23 mounted on the core, a vibrating armature plate 27 with a plastics striker secured to it at such a position that when the armature plate is vibrated it strikes the centre of the diaphragm. Make and break contacts are operated by a peg 32 attached to the armature. Alternatively the vibrating armature may be arranged to strike the diaphragm. Constructions for use with A.C. and D.C. electrical supplies are described.
Patent GB-1449061-A (GB)
Title: Process for production of sodium perborate
IPC: C01B15/12
Filed: 1973-08-31
Abstract: 1449061 Sodium perborate DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT 31 Aug 1973 [2 Sept 1972] 41008/73 Heading C1A Abrasion-resistant sodium perborate tetrahydrate is made in one or more crystallization stages by (1) introducing a supersaturated perborate tetrahydrate solution containing 200- 700 g. perborate tetrahydrate per litre into a suspension of perborate seeding nuclei in perborate solution containing 100-500 g. of nuclei per litre, the temperature of the mixture being 20-40‹ C., the introduction being at such a speed that not more than 30 g. perborate are crystallized per minute per m.<SP>2</SP> of apparent seeding area, and such that the crystallization ratio is not more than 25% per stage while the total crystallization ratio is not more than 100%; (2) cooling to 15‹ C. within 15-30 mins. of the end of crystallization and subsequently recovering at least a portion of the product. The crystallization ratio is defined as grams perborate added/grams perborate initially present x 100% and is a measure of the increase in size of the nuclei. A crystallization stage is completed by ending the supply of supersaturated solution or removing the suspension from the crystallization zone.
Patent GB-411100-A (GB)
Abstract: 411,100. Frequency and phasedifference measurements. WILLIAMS, C. E. WYNN-, Bron Haul, Church Walks, Llandudno, Carnarvonshire. Nov. 28, 1932, No. 33686. [Class 37.] In an arrangement for indicating, measuring, or utilizing the phase or frequency differences of a plurality of alternating currents, at least one pair of vapour discharge devices are arranged, with the grid of each connected to the anode of the other the two anodes being fed with alternating voltages from two supply circuits, the co-operation of the anode currents being arranged to measure or identifying the magnitude and /or the sign of the phase difference between the currents and /or voltages of the two supply circuits. In the arrangement shown in Fig. 3 the two vapour discharge devices A, B, are connected as indicated, the two anodes each with the interconnected grid of the other device being supplied with currents or voltages from two supply sources P, Q, the values of the two voltages being equal, but not necessarily in phase. If the two anode currents IA and IB are combined it is found that the combination gives an indication of the phase displacement between the two supply sources P, Q. The theoretical considerations underlying this action are set forth in the Specification. Thus with the arrangement shown the combined anode current remains practically constant for all angles of phase displacement of sources P and Q other than a small range in the neighbourhood of 180‹ within which range it rapidly falls to zero. Alternatively by the addition of suitable biassing means the current may be arranged to have a suddenly increased value throughout this range. If desired, one of the supply voltages may be displaced through 180‹ as by means of the auto-transformer T shown in Fig. 6 in which arrangement the range of zero or increased combined anode current is in the neighbourhood of zero phase displacement between the two sources. In this arrangement the combined anode currents may as shown operate a two winding relay X so that, a synchronizing switch XI may be closed when the two supply sources are in phase. This arrangement may be modified in order to indicate the sign of the phase displacement by the insertion of a phaseshifting device in the connection between the connection of the anode of one discharge device and the grid of the other (Fig. 9, not shown) the combined anode current being utilized to indicate the sign i.e. the lead or lag of the phase displacement between the two sources. This method may be combined with the previous method of indicating within limits the amount of phase displacement or may be used to indicate relatively small differences of frequency between the sources by observing the number of changes of sign of phase displacement per second. Various other methods of combining the two anode currents are also described. The combined anode currents may be utilized either directly or indirectly to vary the field excitation of generators to be synchronized. Specification 397,229 is referred to.
Patent GB-1058752-A (GB)
Title: An improved method of and apparatus for controlling the ratio of fluid mixtures
Inventor: QUIRK MARTIN RICHARD
IPC: G05D11/00
Filed: 1962-10-31
Abstract: 1,058,752. Measuring fluid flow. JOHN I. THORNYCROFT & CO. Ltd. Sept. 20, 1963 [Oct. 31, 1962], No. 41168/62. Heading G1R. In an apparatus for controlling the ratio of fluid mixtures in supply lines a piston 12, pivoted to a lever 10 pivoted at 11, is subjected on one side, i.e. chamber 13, to the pressure anteriorly of an orifice plate 26 and at the other side i.e. chamber 14, to the pressure posteriorly of an orifice plate 24 or venturi in a supply line 28, Fig. 2. A push rod 17, pivoted to the lever 10, is attached to a diaphragm 18 subjected to pressures on either side the inlets 20, 21 derived from the pressure drop over a further venturi or orifice plate in another fluid supply line. The arrangement is such that any alteration in pressure drop across either of the venturi or orifice plates in the fluid supply lines will cause movement of either the piston, 12 or diaphragm 18 to actuate a microswitch 23 or 24 to actuate a damper or valve in either of the fluid lines until the preset ratio is again obtained.
Patent GB-887364-A (GB)
Title: Improvements in the manufacture of hydrogen peroxide
IPC: C01B15/023
Filed: 1958-12-22
Abstract: An alkyl substituted anthraquinone having a formula:-<FORM:0887364/III/1> wherein at least one of R1 and R2 and at least one of R3 and R4 are alkyl radicals and the remainder of R1, R2, R3 and R4 are hydroge atoms and in which the total number of carbon atoms in R1, R2, R3 and R4 taken together is from 3 to 15, is employed as the working compound in the anthraquinone/anthrahydroquinone process for the production of hydrogen peroxide.  As a modification, the anthraquinone may, in the above formula, have an alkyl group in the 4-position.  The preferred alkyl radical substituents are ethyl, tert-butyl and tertamyl and the specific compounds 2:6 diethyl-, 2:7 diethyl-, 2:6:7 triethyl-, 2 ethyl- 6 tert butyl-, 2:7 di tert butyl-, 2 tert butyl-6 tert amyl, 2 methyl- 6 iso propylanthraquinone and 3,4-dimethyl-6-tert butyl anthraquinone and the use of isomeric mixtures, particularly those having low melting points and especially eutectics formed during the formation of the alkyl substituted derivatives, are referred to. Examples refer to the production of hydrogen peroxide by the successive hydrogenation, oxidation and water-extraction of working solutions of 2 ethyl-6 tert. butyl anthraquinone dissolved in a mixture of 2-ethyl hexanol and 2-methyl naphthalene, and of 3,4-dimethyl-6-tert-butyl anthraquinone dissolved in a mixture of trioctyl phosphate and methyl naphthalene.
Patent GB-1516360-A (GB)
Title: Automatic moulding apparatus
IPC: G05D9/12
Filed: 1975-10-08
Abstract: 1516360 Automatic control SUMITOMO METAL INDUSTRIES Ltd 8 Oct 1975 41288/75 Heading G3N In an automatic molding apparatus the supply of metal from a ladle 11 to a mold 3 is controlled by a nozzle stopper 12 the position of which is controlled so that the speed at which the surface of metal rises within the mold is in accordance with a desired pattern. The rate of rise of the surface y is detected by a micro-wave doppler device 1, 2 the output of which is fed to converter providing a speed signal which is compared, in a comparator 5' with a desired pattern held in a generator 5 and the difference signal is fed to a driving device 7 for a motor 8. The motor 8 controls the opening of a valve 9 positioning the nozzle 12 by an hydraulic actuator 10. The mold-filling operation is terminated by a device 6 integrating the rate signal from the device 1 or, in an alternative embodiment, after a pre-set time by a timer. In an alternative control arrangement, the nozzle 12 is open, or closed, intermittently in dependence on the difference signal.
Patent GB-932920-A (GB)
Title: Binary to decimal decoder
Inventor: WILLOCKS HAROLD JOHN
Filed: 1960-12-01
Abstract: 932,920. Electric selective signalling systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 22, 1962 [Dec. 1, 1960], No. 41316/60. Class 40 (1). A recording circuit comprising diodes and relays converts a pure binary representation of a number into a multi-digit decimal representation, each decimal digit being represented by a single marking on one of ten leads. The circuit is as shown in Fig. 1, binary input bits a to k energizing relay pairs A, A<1> to K (pairs of relays being used to obtain sufficient contacts) and producing an output in each of the decimal denominations shown. The arrangement of the circuit paths set up by the actuated relay contacts is such that they can be regarded as adding circuits. Thus the " units " circuit 101 can be regarded as adding all the decimalunits components of each of. the binary bits a to k. For example, binary bit d is weighted 6.4 (" a " being the most significant bit) and its units component is 4. Also the contact D1 in the units circuit 101 can either be in its upper position representing 0 or in its lower position representing 4. Similarly, the h bit has a units component of 4. Thus, if both the d and h bits are ones then current enters the left-hand side of circuit 101 passes via transferred contacts D1 and transferred contact H2 to a lead referenced 8. In this way all the units components of the binary bits are added by the circuit 101, decimal carries therefrom being transferred to the " tens " circuit 102 by relays L, M and N where all the tens components are added.
Patent GB-1282916-A (GB)
Title: Basic mono azo dyestuffs and process for their manufacture
IPC: C09B44/10
Filed: 1969-08-20
Abstract: 1282916 Basic monoazo dyes FARBWERKE HOECHST AG 20 Aug 1969 [20 Aug 1968] 41528/69 Heading C4P Novel basic monoazo dyes, free from sulphonic acid groups of formula wherein A is the residue of a triazolium, imidazolium, pyrazolium or thiazolium ring, Y is a sulphonamide, carboxylic acid amide, COOH, ,carboxylic acid ester group or CN group, D is H or a non-ionic substituent, B is an aromaticcarbocyclic or -heterocyclic radical, Z is OH or a primary, secondary or tertiary amino group and X is an anion are prepared by (a) coupling a diazotized amine of formula with a coupling component H-B-Z or (b) treating a dye of formula with an alkylating agent. The dyes may be used to colour a variety of fibrous materials, in particular polyacrylonitrile fibres in yellow, red and blue shades. Specifications 1,134,175 and 1,169,057 are referred to. Reference has been directed by the Comptroller to Specifications 1,134,175 and 1,169,057.
Patent GB-1133164-A (GB)
Title: Improvements in or relating to respiratory apparatus
IPC: A61M16/20
Filed: 1966-09-16
Abstract: 1,133,164. Valves. O. H. DRAGER, [trading as DRAGERWERK, HEINR. & BERNH. DRAGER]. 16 Sept., 1966 [16 Sept., 1965], No. 41579/66. Heading F2V. [Also in Division A5] In breathing apparatus in which gas 2 is supplied under pressure through an inhalation duct 1, 1a, the duct is provided with a throttle 5 and a valve in parallel with each other and is arranged so that the main flow of gas into the outlet 1a through the valve is possible only after the pressure in the outlet 1a has been slowly raised by gas passing through the throttle. The valve comprises a seat 9 and a diaphragm 7 biased with a spring 8, the diaphragm moving away from the valve seat as the pressure rises in the outlet 1a. The breathing apparatus may include a breathing bag the outside of which is subjected alternately to positive and negative pressure to force the gas 2 through the duct and it is stated that the apparatus may be used for anaesthetizing a patient.
Patent GB-1001343-A (GB)
Title: Heat-curable filled polyethylene composition
IPC: H01B3/44
Filed: 1961-11-21
Abstract: A heat curable composition finding application as insulation for electric cables comprises a polymer of ethylene, a peroxide wherein the peroxide oxygen atoms are linked to tertiary carbon atoms, and aluminium silicate intimately mixed with a silicone liquid, e.g. dimethyl silicone oil or octamethylcyclotetrasiloxane. Optional ingredients are other polymers (e.g. polyurethane or chlorinated polyethylene) and antioxidants (e.g. polymerized trimethyl di-hydroquinolines). Preferred peroxides are di-alpha-cumyl peroxide, and peroxides of formulae <FORM:1001343/C3/1> The aluminium silicate or clay used may be calcined and/or rendered non-acidic before use. Specifications 594,481 and 640,067 are referred to.
Patent GB-913677-A (GB)
Title: Crystal growing process
IPC: H01L21/00
Filed: 1960-12-05
Abstract: <PICT:0913677/III/1> <PICT:0913677/III/2> In pulling a dentritic crystal from a supercooled melt using a seed crystal having two or more interior twin planes and orientated as shown in Fig. 2, a seed crystal with its tip premelted is contacted with a pre-supercooled melt.  A single dendritic crystal is thereby produced as an axial extension of the seed crystal.  Materials specified are germanium, silicon, Group III-Group V compounds, and Group II-Group VI compounds. Semi-conductor materials may be intrinsic or doped (n- or p-type). The melt may be supercooled 1 DEG -40 DEG C.  Pulling may be effected in an atmosphere of argon, helium, hydrogen, or nitrogen. The pulling rate may be 6,25-62,5 cm./min.  The premelting may be effected by the passage of a gas discharge between the seed and the melt.  Direct or alternating current may be employed.  In the former case, the seed may be the anode or cathode.  The distance between the seed and melt during discharge may be 1/8 inch. The current may be 1-10 milliamperes and the voltage 300-1000 volts.  As shown in Fig. 1, a gas discharge is formed between a seed 26 (as anode) in an electrically conducting holder 28 and a melt 18 (as cathode) in a graphite crucible 16, the holder 28 and crucible 16 being connected by a circuit comprising bush contact 54, direct current power source 44, impedance member 48, switch 50, and crucible support 14.  The impedance member may be a vacuum tube triode with plate and grid connected together to form a diode.  Specification 913,674 is referred to.
Patent GB-1148815-A (GB)
Title: Improved burner and fire tube boiler embodying same
IPC: F23D14/10
Filed: 1967-09-14
Abstract: 1,148,815. Gas burners. AQUA-CHEM Inc. 14 Sept., 1967 [19 Oct., 1966], No. 42039/67. Heading F4T. A burner for use in a fire tube boiler comprises a tube or header 18 provided with spaced openings 33 in each of which is a burner disc 37 formed of a single length of a corrugated ribbon of stainless steel, galvanized steel or brass and adjacent openings 33 are connected by slots (35) containing straight ribbon inserts (46) flame deflectors (50) preventing the flame issuing from the straight inserts (46) from impinging on the boiler tube but allowing ignition of one disc from another.
Patent GB-984290-A (GB)
Title: Anticoccidial compositions containing furan derivatives
IPC: C07D307/75
Filed: 1961-11-24
Abstract: Nitrofuran derivatives of the formula <FORM:0984290/C2/1> where X represents a cyanomethyl or dichloromethyl radical, may be prepared by treating 5-nitro-2-furaldehyde with cyanoacetyl hydrazine or dichloroacetylhydrazine respectively; altertively, the derivatives may be prepared by treating 5 - nitro - 2 - furadlehyde hydrazone with cyanoacetyl chloride or dichloroacetyl chloride respectively. An inert solvent is preferably used in these reactions, and heat may be applied to speed up or complete the treatment.ALSO:A poultry feed composition, or a concentrate for the preparation of such composition, having anticoccidial properties contains as the active ingredient a compound of formula <FORM:0984290/A5-A6/1> in which X represents a cyanomethyl or dichloromethyl radical. (For the preparation of these compounds see Division C2.)  In an example, Vitamins A and D3 are incorporated in the feed composition.
Patent GB-1059344-A (GB)
Title: Polyurethanes
Inventor: MERRIMAN PETER
IPC: C08G18/10
Filed: 1962-11-08
Abstract: A polyurethane is prepared by reacting isotactic polypropylene oxide having substantially terminal hydroxy groups with an organic polyisocyanate or polyisothiocyanate.  The polypropylene oxide may have a M.W. of 250-10,000 and the polyisocyanate may be aliphatic, cycloaliphatic or aromatic.  The isotactic polypropylene oxide having terminal -OH groups may be prepared by degradation of isotactic polypropylene oxide with O2, O3 or radiation followed by reduction with a metallic hydride, e.g. LiAlH4, the undegraded isotactic polypropylene oxide having been prepared by polymerizing propylene oxide using a complex of FeCl3 and propylene oxide as catalyst and the isotactic fraction separated out by precipitation from aqueous acetone at - 20 DEG  C.  The polyurethane may be prepared by the "one-shot" or prepolymer methods.  Foams may be produced by incorporating water or other blowing agent into the reaction mixture. In Example (1) isotactic polypropylene oxide was reacted with a molar excess of dicyclohexylmethane diisocynate to form a prepolymer which was reacted with butane diol and trimethylol propane in the presence of stannous octoate in dichloromethane.  In Example (2) a prepolymer derived from tolylene diisocyanate and isotactic polypropylene glycol was mixed with water soluble silicone, stannous octoate, N-methylmorpholine, triethylamine and water and allowed to foam in a paper bag mould.