baber/WOPTO huggingface dataset:
Patent GB-756120-A (GB)
Title: Electrical phase detector
IPC: H03D3/10
Filed: 1954-09-06
Abstract: 756,120. Phase discriminators; pulse radar. BENDIX AVIATION CORPORATION. Sept. 6 1954 [Sept. 16, 1953], No. 25832/54. Classes 40 (5) and 40 (7). In a phase detector in which a D.C. voltage is produced, depending on the lack of coincidence in phase and amplitude of two input oscilla. tions, one oscillation is applied over capacitor 19 to a tuned circuit 22 ... 24 to the ends of which are connected, through resistors 39, 40, reversed diodes 25, 26. Inductors 20, 21 form D.C. paths to earth, while the second oscillation is applied over capacitor 33 to a network connected between earth and the diodes 25, 26. Preferably this network is a tuned circuit 34, 35 and the output is taken across a R-C network 36, 37 in the inductive arm. The earthed junction of capacitors 23, 24 ensures that equal and opposite instantaneous potentials are applied to diodes 25, 26 to produce a D.C. voltage across resistor 36 depending on the phase and amplitudes of the instantaneous potentials developed across the tuned circuits. Switches 39 and 40 enable the tuned circuit components 23, 24 to be matched. The invention is described with reference to a moving target indicator system in which the oscillations are the transmitted pulses and their echoes and in which the signal from the phase detector modulates the output of an oscillator. Part of the modulated output is amplified, detected and fed to a subtract mixer and another part is delayed, amplified, detected and fed also to the subtract mixer, the output of which consequently only indicates the presence of moving targets, Fig. 1 (not shown).
Patent GB-151832-A (GB)
Title: Improvements in sleeve valve mechanisms for internal combustion engines
IPC: F01L7/04
Filed: 1919-12-11
Abstract: 151,832. Paterson, T. W. Dec. 11, 1919. Valves.-In a four-strokecycle engine having a rotary sleeve valve 4 surrounding the piston with a single port 5 for admission and exhaust, the peripheral dimension of the port is extended at u, where it is finally uncovered by the piston, in order that the area of port opening may increase approximately in proportion to the volume swept by the piston. The valve is balanced bv providing a dummy port in a part of the sleeve below the cylinder ports.
Patent GB-1112051-A (GB)
Title: Mining machines
Inventor: HAMILTON ROBERT JOHN
IPC: E21C35/22
Filed: 1965-06-18
Abstract: 1,112,051. Mining machine dust/extractor. COAL INDUSTRY (PATENTS) Ltd. 14 June, 1966 [18 June, 1965], No. 25923/65. Heading E1F. To remove dust from the vicinity of cutting means mounted on a swingable arm of a heading machine there is mounted along the arm one or more slotted boxes connected to suction means on the arm-supporting body of the machine by flexible hose.
Patent GB-672127-A (GB)
Title: Improvements in or relating to an aircraft antenna system
IPC: H01Q1/28
Filed: 1948-10-05
Abstract: 672,127. Aerials. FLADER, Inc., F. Oct. 5, 1948 [Oct. 7, 1947], No. 25952/48. Class 40 (vii). In order to prevent static interference with radio reception on an aircraft due to corona discharge, the aerial and its associated supports are covered by an insulating sheath extending to the aerodynamic surface of the aircraft. As shown, the aerial 11, strain insulators 14, straining wires 22, 23 and 24, tensioning device 15, lead-in 17, mast 12, bracket 16 and lead-in insulator 18 are covered with a single or double layer of rubber or polyethylene insulating tape. Specification 651,742, [Group XXXV], is referred to. The Specification as open to inspection under Sect. 91 states that insulating varnishes may be employed. This subject-matter does not appear in the Specification as accepted.
Patent GB-901090-A (GB)
Title: Improvements relating to electric lanterns
Inventor: SIMMONDS RICHARD WALTER FRANK
IPC: F21S8/08
Filed: 1959-07-29
Abstract: 901,090. Lanterns. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 1, 1960 [July 29, 1959], No. 26056/59. Class 75 (4). A lantern for electric discharge lamps comprises a central head fitting 1 for securing to the end of a supporting column and two main limbs separately detachable from the head fitting and whose main axes are inclined to each other, one of the limbs comprises a housing for a lamp or lamps and the other of the limbs comprises a housing for lamp control gear. The head fitting comprises two integral limbs 2 and 4. A flange 3 on the limb 2 mounts a bracket 6 supporting on a shelf 8 the control gear which comprises a choke 10 and capacitor 9, the choke being spaced from the bracket by pads 11 secured to the base of the choke. The shelf carries an end bracket 13 which mounts a gear housing 14. A groove in the flange lined with a sealing gasket provides a seating for the rim of the housing. A similar flange 5 on the limb 4 supports a further flange 17 which mounts a framework 20 with depending brackets 25, 26 terminating in clips securing the lamps. A pair of reflectors 30 extend above the lamp and a reflector 31 extends below the lamp. The bracket 26 mounts a perspex bowl 29, the rim of which seats on a resilient gasket in the flange 17. The housings lamp or lamps and the control gear are interchangeable. A part of the housing 14 may be made of translucent material and the housing may contain a lamp or lamps beside the control gear. The housings may have different lengths.
Patent GB-362852-A (GB)
Title: Improved manufacture of organic arsenic compounds
IPC: C07F9/74
Filed: 1930-09-03
Abstract: Derivatives of aromatic p-aminoarsonic acids, containing the group .NH.CO.X.CO.N:, in which X is an aliphatic bivalent radical, and in which one or both of the free valencies of the right-hand nitrogen atom may be satisfied by hydrogen or by a simple or substituted aliphatic, aromatic, hydroaromatic or heterocyclic radical or radicals, or in which the nitrogen atom forms part of a heterocyclic ring, are manufactured by condensing the aromatic p-arsonic acid or a derivative thereof with an aliphatic dicarboxylic acid or a simple derivative thereof, such as an ester, anhydride or acid chloride, and condensing the product or a simple derivative thereof with ammonia or with a primary or secondary amine having a simple or substituted aliphatic, aromatic, hydroaromatic or heterocyclic radical or radicals, or with a secondary heterocyclic nitrogenous base.  In examples: (1) sodium p-arsanilate is heated with succinic anhydride, yielding, on acidification, p-arsonosuccinanilic acid, which is condensed with aniline to produce succinanilide-mono-p-arsonic acid; (2) p-arsonosuccinanilic acid is condensed with methylamine or ethylamine, producing succinanilomethylamine-p-arsonic acid or the corresponding ethylamide; (3) p-arsonosuccinanilic acid is converted by heat into succinanil-p-arsonic acid, which with alcoholic ammonia yields succinanilamide-p-arsonic acid; (4) succinanil-p-arsonic acid with dimethylamine produces succinanilodimethylamide-p-arsonic acid; (5) succinanil-p-arsonic acid is condensed with piperidine to form succinanilopiperidide-p-arsonic acid; (6) sodium p-arsanilate is treated with carbethoxyacetyl chloride and caustic soda to produce ethyl p-arsonomalonanilate which is heated under pressure with aqueous ammonia giving malonanilamide-p-arsonic acid; (7) ethyl p-arsonomalonanilate is treated with methylamine or ethylamine to produce malonanilomethylamide-p-arsonic acid or the corresponding ethylamide; (8) ethyl p-arsonomalonanilate with dimethylamine yields malonanilodimethylamide-p-arsonic acid; (9) ethyl-p-arsonomalonanilate is saponified and the product treated with thionyl chloride followed by aniline to produce malonanilide-p-arsine oxide, which is converted by hydrogen peroxide to malonanilide-p-arsonic acid; (10) sodium p-arsanilate is treated with caustic soda and g -carbethoxybutyryl chloride (obtained by treating monoethyl glutarate with thionyl chloride), producing ethyl p-arsonoglutaranilate, which with methylamine yields glutaranilomethylamide-p-arsonic acid.  The Provisional Specification describes the treatment of aminoarsonic acids in general, and the manufacture of compounds containing the group .NH.CO.CO.N : or the group .NH.CO.X.CO.N : in which X may be an aromatic, hydroaromatic or heterocyclic bivalent radical.
Patent GB-755302-A (GB)
Title: Improvements in or relating to magnetic amplifiers
IPC: C22C28/00
Filed: 1954-09-10
Abstract: 755,302. Magnetic amplifiers. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Sept. 10, 1954 [Sept. 15, 1953], No. 26270/54. Class 40 (4). Negative bias windings on two auto-selfexcited transductors operating in push-pull are energized by the sum of the output currents of the two transductors or by a proportion thereof, the arrangement being such that the same operating range for both polarities of a control signal is maintained despite variations in the transductor characteristics due to temperature fluctuations. As shown in Fig. 1, a pair of auto-self-excited full-wave rectifying transductors 12, 14 energized from a common centre-tapped transformer 16 have their output currents combined differentially in load windings 58, 60, to provide a push-pull output between terminals 119, 119<1>. The output currents returning to the transformer centre-tap 22 cumulatively energize the negative bias windings 50, 52, 54, 56, these windings acting in opposition to a fixed positive bias established by windings 64, 66, 68, 70. Each transductor may comprise either separate cores 24, 26; 36, 38, as illustrated or a single three-limbed core, the cores being formed of rectangular hysteresis loop material. The negative bias windings 50, 52 and 54, 56 may alternatively be connected in parallel as shown in Fig. 2, the distribution of the combined output currents in the two winding groups being determined by a variable potentiometer 120 which permits compensating adjustment for differences in the two transductors. In a modification, Fig. 4, two auto-self-excited bridge rectifying transductors 130, 132 are arranged for push-pull operation, the differential output being obtained across load resistors 160, 162 at terminals 164, 164<1>. Parallel negative bias windings 50, 52; 54, 56 are associated with an adjustable potentiometer 172 as in the Fig. 2 arrangement and the amplifier is energized from a transformer 134 having separate secondary windings 138, 140 for each transductor. In a similar construction, Fig. 3 (not shown), the negative bias windings are connected together in series.
Patent GB-837265-A (GB)
Title: Improvements in non-rectifying contacts to silicon carbide
IPC: H01L29/45
Filed: 1958-08-15
Abstract: 837,265. Semi-conductor devices. GENERAL ELECTRIC CO. Aug. 15, 1958 [Aug. 16, 1957], No. 26286/58. Class 37. A silicon carbide semiconductor body has an ohmic alloyed electrode consisting of tungsten, molybdenum, or a tungsten-molybdenum alloy. Fig. 2 shows a suitable apparatus in which a metallic disc 19 of tunsten or molybdenum is placed on a graphite strip which is heated by means of electric current source 22. A monocrystalline silicon carbide wafer 20 is placed on the disc 19 and the strip heated to between 1700 and 1900 C. for a few seconds until fusion occurs to provide an alloyed electrode. The graphite strip 18 may be shaped as shown in Fig. 3 to ensure uniform heating. The process may take place in an atmosphere of hydrogen, helium or argon. Fig. 4 shows the silicon carbide wafer 26 with ohmic electrode 27 and an alloy junction rectifying electrode 28 which may be produced by utilizing an alloy of silicon with aluminium or boron if the silicon carbide is N-type, or silicon with arsenic or phosphorus if the silicon carbide is P-type. Two such rectifying electrodes may be provided to form a transistor. The Specification states that the use of a nickel and titanium solder to bond the silicon carbide wafer to a tungsten or molybdenum base is unsatisfactory.
Patent GB-939495-A (GB)
Title: Polymerization of internal olefins
IPC: C08F236/06
Filed: 1961-07-20
Abstract: Copolymers of butadiene-1,3 and a linear internal mono-olefin containing from five to thirty-five carbon atoms are made by polymerizing a mixture of the monomers in the presence of an Alfin catalyst.  Internal monoolefins are defined as those in which the single double bond is not between the first and second carbon atoms. The Alfin catalyst preferably consists of a mixture of sodium chloride, a sodium alkenyl derived from an aliphatic olefin and a sodium alkoxide derived from a methyl alkyl carbinol. The copolymerization may be effected in an inert hydrocarbon solvent. The internal mono-olefin may be pentene-2, heptene-2, heptene-3, octene-2, octene-3, tricosene-11, or pentriacontene-17, and the olefin may be in the cis and/or trans form.  The preferred catalyst is a pentane suspension of allyl sodium, sodium isopropoxide, and sodium chloride.  The Dilute Solution Viscosity of the copolymers are determined by the formula, <FORM:0939495/IV(a)/1> where t is the flow time of the elastomer in a solvent in an Ostwald Viscosimeter, and t0 is the flow time of the solvent, is between 6 and 20.  Specifications 872,163, 924,654 and 939,496 are referred to.
Patent GB-1016920-A (GB)
Title: Electrolytic cells for the production of aluminium
IPC: C25C3/16
Filed: 1964-06-25
Abstract: <PICT:1016920/C6-C7/1> An electrolytic cell for producing aluminium in a fused bath contained in a cathodic pot 1 with anodes 2 carried by vertically movable rods 7 arranged in rows has a fixed current conducting frame 3 spanning the pot from one end to the other, and each rod is suspended from the frame through an independently releasable coupling 15 and a mechanism for causing it to move vertically, e.g. by being detachably clamped to a conducting plate 8 fixed to a rack 9 engaging a pinion 11, and is individually electrically connected to the frame through a flexible conductor 10, whereby the rod can be lifted until the anodes are clear of the bath while still electrically connected to the frame and while other anodes in the row are still dipped in the bath.
Patent GB-1495680-A (GB)
Title: 1-(2-benzoylphenoxy)-2-hydroxy-3-aminopropanes
IPC: C07D303/22
Filed: 1975-06-20
Abstract: 1495680 1 - (2 - Benzoylphenoxy) - 2 - hydroxy-3-aminopropanes MAY & BAKER Ltd 16 June 1976 [20 June 1975] 26407/75 Heading C2C Novel compounds of Formula I (wherein R<SP>1</SP> represents an isopropyl, t-butyl or 2-phenylethyl group, R<SP>2</SP> represents a methyl group or a chlorine atom, n represents 1 or 2 and m represents 0, 1 or 2) and non-toxic acid addition salts thereof where it is to be understood that when m represents 2 then the substitutents represented by the symbol R<SP>2</SP> may be the same or different are prepared by reaction of a compound of Formula II with an amine R<SP>1</SP>NH 2 . Intermediates of Formula II above are prepared from compounds of Formula IV with epichlorohydrin. Phenols of Formula IV are prepared by Fries rearrangement of the substituted benzoyloxy compounds prepared by acylation of the unsubstituted phenols. Pharmaceutical compositions in conventional forms for oral or parenteral administration and having vascular #-andrenoceptor blocking activity comprise an above novel compound and a carrier or diluent.
Patent GB-327086-A (GB)
Title: Improvements in electric junction boxes or the like
IPC: H02G3/06
Filed: 1929-09-02
Abstract: 327,086. White, S. D., and Cron, H. W. Sept. 2, 1929. Junction boxes.-A cover A has its rim divided by slits A' - - A<3> forming tongues a that can be bent inwardly to form cable inlets, the tongues being furnished with roughened faces or edges to make good gripping and bonding contact with the sheathing of the cable D. The roughened face may be formed by punching holes E in the tongues leaving the edges of the holes projecting and sharp.
Patent GB-410839-A (GB)
Title: Improvements in or relating to deflection indicating and/or controlling devices employing gyroscopes
IPC: G01C19/44
Filed: 1932-11-26
Abstract: 410,839. Speed governors; windmotors ; turbines. BROWN, J. P., 12, East Holm, Golders Green, London. Nov. 26, 1932, No. 26667. [Classes 57 and 110 (iii).] In order to vary periodically the speed of rotation of a spindle B, supporting and driving a gyro rotor A by the spherical surface C and driven by a wind motor G, the spindle B has a centrifugal governor H with a brake disc H<1> co-operating with a brake H<2>. The latter is carried by one arm of a bell crank of which the other arm H<3> is connected by link H<4> to a crank J<1> on a spindle J driven through gear wheels J<2>, B<1>, by the spindle B. In order to avoid excessive use of the brake H" a Bowden wire G<9> from the crank J<1> periodically decreases the driving force of the wind motor by varying the pitch of the blades G<1>, G<2>, by lever G<8>, sleeve G<6>, and links G<5>. The brake and governor device H<2>, H or the variable pitch wind motor G may be used separately for varying the speed of the spindle B. In a modification, the spindle B is coupled directly to a hydraulic turbine provided with oppositely directed nozzles, one of which is more powerful or operative for a longer period than the other. The supply of fluid to the nozzles is controlled by a piston valve with a small lap or incorporating snapover mechanism and moved up and down periodically by clockwork mechanism so that the turbine is speeded up by one nozzle and retarded by the second. Specification 341,519, [Group XX], is referred to.
Patent GB-1468191-A (GB)
Title: Transmitter receiver set for radio communication systems
IPC: H04B1/54
Filed: 1974-06-17
Abstract: 1468191 Automatic level control; radio signalling COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CITALCATEL 17 June 1974 [15 June 1973] 26697/74 Heading H4R and H4L In a transmitter receiver for a radio communication system an attenuator in the receive channel is adjusted during reception to maintain the output level corresponding to a received signal substantially constant, at the same time a signal is transmitted back which, received at the station originating the originally received signal, lowers the transmission level by an amount bearing a fixed relation to the level by which the originally received signal exceeded a reference level. As described a received signal exceeding a threshold level causes the transmission level of the other station to reduce by half the excess in dB of received signal over the threshold level. The arrangement is said to reduce interference between pairs of stations engaged in separate conversations. Preferred embodiment, Fig. 2. The received signal passes through a variable attenuator 11, amplifier 71, mixer 73. If amplifier 74, detector 75, and audio amplifier 76 for reproduction on receivers 14. Calling signals or the reply signals of a station being called are tapped off after the detector 75 and recognized by decoder 89 which opens gate 79, to allow the carrier level of the received signal to pass to a threshold amplifier 80, and operates a logic circuit 90 to 95 which generates timing signals for the gain setting operation. If the carrier level exceeds the threshold set in amplifier 80 the attenuator 11 is adjusted to restore the signal level substantially to the reference level. At the same time the excess over the threshold is quantized at 83 and causes the generation of a digital code in coder 84 which is fed via gate 61, modulator 64, filter 65, amplifier 66, attenuator 33 and RF amplifier 67 to the duplexer 2 for transmission as a transmission level setting signal. At the other station participating in the call the level setting signal is detected by decoder 97 and sets an A to D converter 98 to produce a reference level to comparator 69, to the other input of which is applied the transmitted signal so that the comparator output adjusts attenuator 33 to reduce the difference between the transmitted level and the reference level substantially to zero. As shown the references 93, 94, 95 are monostable triggers providing timing signals for the various operations which take place at the start of each connection, 60 is gate which admits calling or reply signals to the transmitter channel, and 31 is a microphone for the conversation signals.
Patent GB-1214970-A (GB)
Title: Improvements in or relating to anti-pest agents
Inventor: FRICKE GERHARD
IPC: A01N25/02
Filed: 1969-05-27
Abstract: 1,214,970. Sprayable pesticides containing organo-phosphorus compounds. FETTCHEMIE VEB. 27 May, 1969, No. 26710/69. Heading A5E. A liquid pesticide suitable for spraying from aircraft after dilution with water comprises an organo-phosphorus active ingredient free from mineral oil and dissolved in a dihydric or polyhydric alcohol having a viscosity of 300 to 10000 cps. at 20‹C., containing a non-ionic or anionic surface active agent, said pesticide being capable of being diluted with water to a viscosity of 5 to 200 cps. without phase separation. Specified organo-phosphorus compounds are butonate, trichlorophon and dimethoate; the alcohol may be an octanediol, hexanetriol or a polyglycol.
Patent GB-1103313-A (GB)
Title: Copper recovery process
IPC: C22B15/00
Filed: 1965-06-24
Abstract: A method for producing copper from a solution of copper nitrate comprises converting at least some of this copper nitrate to Cu (NH3)4 (NO3)2 by the addition of ammonia, treating this solution with SO2 to give a crystalline precipitate which is then treated with H2SO4 to form metallic copper. Alternatively air or oxygen may be used instead of H2SO4 to give a mixture of copper and its oxide from which the latter may be removed by treatment with H2SO4.  A further alternative comprises heating the crystalline precipitate in the absence of oxygen to form a mixture of Cu and its oxide and sulphide. This mixture is then heated in a reducing atmosphere to produce copper metal.
Patent GB-795550-A (GB)
Title: Improvements in or relating to plansifters
IPC: B07B1/38
Filed: 1955-09-19
Abstract: 795,550. Plansifters. GOLFETTO, P. Sept. 19, 1955 [Jan. 8, 1955], No. 26762/55. Class 117 A framework 1 suspended from resilient rods 4, 4<SP>1</SP> supports batteries 2, 3 of superimposed horizontal sieves, and a rotary mass 6 producing oscillations of the assembly is mounted in the space 5 between the batteries, in which space may be placed the driving motor 7. The mass is attached to a shaft 9 driven by the motor. The latter may be located external of the oscillating assembly.
Patent GB-1166747-A (GB)
Title: New Concentrated Liquid Dye preparations, their production and use
IPC: C09B67/34
Filed: 1967-06-09
Abstract: 1,166,747. Basic dye compositions. J. R. GEIGY A.G. 9 June, 1967 [10 June, 1966], No. 26806/67. Heading D1B. The invention comprises concentrated liquid dye preparations which contain a content of a) a basic dye, b) at least one watersoluble salt consisting of the anion of an inorganic or organic mono or poly-basic acid, the free acid of which has a pKa value of at most 4.8 and also of the cation of an inorganic mono or poly-acid base the free base of which has a pKb value of at most 4.8, c) at least one inorganic or organic mono- or poly-basic acid the pKa value of which is at most 4.8, d) at least one cation active or non- ionic stabiliser, e) water and optionally other auxiliaries the salt component b) concentration being so high that the dyestuff remains substantially undissolved. The compositions may contain as component b) Nabl, as the component c) acetic acid, and as component d) a fatty alcohol polyglycol ether. Acrylonitrile fibre may be dyed therewith.