baber/WOPTO huggingface dataset:
Patent GB-1176296-A (GB)
Title: Laser Glass Compositions
Inventor: LEE HAYNES ALEXANDER
IPC: C03C3/095
Filed: 1968-09-06
Abstract: 1,176,296. Luminescent materials. OWENSILLINOIS Inc. 6 Sept., 1968, No. 42472/68. Heading C4S. [Also in Division C1] A laser is of glass with composition consisting essentially in wt. per cent of: SiO 2 , 40-65; Nd 2 O 3 , 1-8; ZrO 2 , 7-10; BaO, 10À5-40; MgO, 0-2; CaO, 0-2; SrO, 0-7À5; Li 2 O, 0-5À5; Na 2 O, 0-2À3; K 2 O, 0-7; Ce 2 O 3 , 0-1; Sb 2 O 5 , 0-1; in which (3Li 2 O + 2Na 2 O + K 2 O)#5À5%, and (CaO+MgO+SrO+BaO)# 15%. Not more than 0.01% Fe 2 O, should be present. The ingredients may be added as oxides or carbonates. The glass has relatively low coefficient of linear thermal expansion, e.g. (50-65) Î 10<SP>-7</SP>/ C. The glass may be transparent.
Patent GB-1141220-A (GB)
Title: Tanker construction
IPC: B63B25/10
Filed: 1967-09-19
Abstract: 1,141,220. Tankers. MOBIL OIL CORP. 19 Sept., 1967 [17 April, 1967], No. 42630/67. Headings B7A, B7M and B7S. A tanker comprising a hull having a cargo section of at least one longitudinal row of centre tanks 15 and port and starboard wing tanks 16 separated from one another by transverse and longitudinal bulkheads 14, the longitudinal bulkheads extending from the bottom plating of the hull to the top plating, has an inner bottom 18 extending longitudinally at least the length of the cargo section and transversely to each side plating of the hull, the space between the inner bottom and the bottom plating of the hull being divided into a plurality of ballast tanks 19. Said space contains a tunnel 20 in which distributing pipes 23 extending from a pump have branch pipes 24, 25 in communication with the lowermost parts of the tanks. The bulkheads have stiffeners (27, Fig. 1, not shown) which to provide effective drainage are sloped one inch per foot of width.
Patent GB-1410106-A (GB)
Title: Process for the preparation of polymers of alpha-olefins
IPC: C08F4/60
Filed: 1973-09-11
Abstract: 1410106 Ziegler-Natter polymerization catalysts ETHYLENE PLASTIQUE 11 Sept 1973 [14 Sept 1972] 42722/73 Heading C3P Polymers of alpha-olefins are prepared by polymerizing the olefin in the presence of a stereo specific Ziegler-Natter catalyst, and also 0.01 to 10 millimoles of an additive selected from furfuraldehyde, pyrrole-2-aldehyde, and methyl pyrrole-2-aldehyde, per litre of reaction mixture, said additive increasing the stereo specificity of the catalyst. Examples of olefins which may be polymerized are propylene, but-1- ene, pent-1-ene, 3-methyl-but-1-ene, 4-methylpent-1-ene, and hex-1-ene. In the examples a mixture of diethyl aluminium chloride and TiCl 3 .<SP>1</SP>/ 3 AlCl 3  is used as the Ziegler-Natter catalyst. Isotactic polymers are produced.
Patent GB-1017899-A (GB)
Title: Fissionable nuclear fuel particles for high operating temperatures
IPC: G21C3/62
Filed: 1964-10-21
Abstract: Nuclear fuel particles comprising a core of uranium carbide or oxide or a mixed carbide of uranium with thorium or zirconium and a coating of one or more layers of pyrolytic carbon are heated at a temperature of 1800  DEG C. or above in an inert atmosphere to form a reaction layer which acts as a diffusion barrier. The coating may comprise (a) a layer of porous carbon and a layer of pyrolytic carbon, (b) a layer of the carbides of any of zirconium, hafnium, niobium or tantalum having an outer layer of pyrolytic carbon, or (c) a layer of carbon followed by a second layer of the carbides of zirconium, hafnium, niobium or tantalum.
Patent GB-1242911-A (GB)
Title: Improvements in and relating to the crosslinking of polymers
Inventor: MAGAY DANIEL
IPC: C08F8/00
Filed: 1969-08-28
Abstract: 1,242,911. Crosslinking polymers. RAYCHEM CORP. 28 Aug., 1969 [30 Aug., 1968], No. 42934/69. Heading C3P. Polymers containing carbon atoms and -NO 2  groups, each -NO 2  group being attached to a carbon atom whereby active sites are introduced into the polymer, are crosslinked by treating with a diacid halide or a strong base, optionally in the presence of a catalyst. The polymer may be in the solid state, and may be contacted with a crosslinking agent in the liquid or vapour state. The polymer may be a polymer or copolymer of ethylene, butene-1, vinyl acetate, ethyl acrylate or cetyl acrylate, nitrated by reaction with nitrogen dioxide or fuming nitric acid. Specified crosslinking agents are oxalyl, succinyl, glutaroyl, terephthaloyl and sebacoyl chlorides and solutions of sodium and potassium hydroxides in methanol and ethanol. Examples describe the nitrating of (1, 3 and 4) polyethylene ; and (2) ethylene/ vinyl acetate copolymer; and the crosslinking of nitrated polyethylene with (5) oxalyl chloride; (6) oxalyl, succinoyl, adipoyl and sebacoyl chlorides; and (7) ethanolic potassium hydroxide; and of nitrated ethylene/vinyl acetate copolymer with (8) oxalyl chloride. The polymers may be made into shaped articles to which heat recovery properties may be imparted.
Patent GB-1481572-A (GB)
Title: Filter for filtration of blood
IPC: B01D39/08
Filed: 1974-10-03
Abstract: 1481572 Blood filter PALL CORP 3 Oct 1974 42957/74 Addition to 1334555 Heading B1D A disposable blood filter is constructed as described in Patent No. 1334555 but the element is made of woven polyamide monofilaments of 20-50 Á diameter giving a pore size of 20-50 Á and an open area of 10-40%. The mesh may be square or rectangular. In the case of a pleated annular element, the ends of the element are embedded in or welded to end caps of various plastics including polyamide, and one end cap may be bonded to the outlet of the housing. The bonded polyamide may be supported on one or both sides by various materials, including extruded polypropylene netting. A comprehensive list of chemicals used to make polyamide is included.
Patent GB-974151-A (GB)
Title: Ketonitratocycloalkanes and their preparation
IPC: C07C203/08
Filed: 1962-11-14
Abstract: The invention comprises 1-oxo-2-nitrato-cycloalkanes, e.g., 1-oxo-2-nitratocyclohexane, which may be made by reacting a cycloalkene with nitrogen dioxide in a liquid saturated hydrocarbon reaction medium at a temperature of -15 DEG  to +25 DEG C. The product is usually immiscible with the hydrocarbon reaction medium and is allowed to form a lower layer which is separated by decantation. The nitrogen dioxide may be added directly to a solution of the cycloalkene, or a solution of the cycloalkene in a hydrocarbon may be added to a solution of nitrogen dioxide in the same solvent. Preferably a solution containing 45% by volume of the cycloalkene in the hydrocarbon solvent is added to a cooled and stirred solution of 3 volumes of liquid nitrogen dioxide in 4 volumes of the solvent and a stream of air or oxygen-containing gas is bubbled through the mixture. The cycloalkenes include cyclopentene, cyclohexene, cycloheptene, methyl cyclopentenes methyl cyclohexene or methyl cycloheptene and other alkyl derivatives in which each ring contains one, two or three substituents each having 1-20 carbon atoms. Specification 974,152 is referred to.
Patent GB-1013682-A (GB)
Title: Improvements in and relating to gas detecting apparatus
Inventor: PALMER THOMAS HENRY
IPC: G01R31/02
Filed: 1960-12-15
Abstract: 1,013,682. Gas analysis. ENGLISH ELECTRIC CO. Ltd. Dec. 11, 1961 [Dec.15, 1960], No. 43186/60. Heading G1N [Also in Division H3]  The concentration of methane in an atmosphere is measured by a catalytically heated platinum resistor connected in a bridge circuit. As shown (Fig. 1), two platinum wire resistors 19, 20 form one branch of a D.C. bridge whose measuring diagonal contains a meter 14 and a relay 15 associated with a warning lamp 26. Both resistors 19, 20 are presented to the gas mixture to be examined, but the former is specially treated to cause methane to burn at its surface, thereby raising its temperature and its resistance. The potential at the junction 18 is also fed to a switching circuit comprising transistors 31, 32, to light a warning lamp 30 when the base-emitter potential difference on transistor 31 exceeds that determined by potentiometer 38. The transistor circuit may be checked by a push button 39 applying a high negative potential to the emitter of transistor 31. Failure of resistor 19 produces reverse current in a diode 36 or 40, thereby preventing operation of the transistor switching circuit. Failure of either resistor 19 or 20 produces a large unbalance current which energizes relay 15 to light a lamp 26. An alternative circuit for lamp 26 is shown (Fig. 2, not shown). Specification 980,169 is referred to.
Patent GB-1385637-A (GB)
Title: Preparation of omega-cyano derivatives of beta-alkoxy-carboxylic  acid esters
IPC: C07C255/10
Filed: 1973-09-14
Abstract: 1385637 #-Cyano derivatives of #-alkoxycarboxylic acid esters STAMICARBON BV 14 Sept 1973 [16 Sept 1972] 43250/73 Heading C2C The invention comprises #-cyano derivatives of #-alkoxycarboxylic acid esters of general formula where n is an integer of from 1 to 5, each R is independently a C 1  to C 10  alkyl or cycloalkyl group, and R 1  and R 2  are independently hydrogen or a C 1  to C 10  alkyl or cycloalkyl group. They may be'prepared by reacting an #-cyanoacetal of general formula with a ketene of general formula preferably in the presence of a Lewis acid as catalyst.
Patent GB-1149254-A (GB)
Title: Improvements in and relating to internal concrete vibrators
Inventor: PASQUA EDWARD ULYSSES
IPC: E04G21/08
Filed: 1966-09-28
Abstract: 1,149,254. Concrete vibrator. E.U. PASQUA. 28 Sept., 1966 [29 Sept, 1965], No. 43251/66. Heading B1C. A submersible concrete vibrator has a resilient tapering shaft 14 carrying at its free end a body 17 and an unbalanced mass 18, and/or the other end connected by a flexible connector 13 to a coupling shaft 7 mounted on bearings 5, 6 is the casing 4 and connected to the drive shaft 24 by a detachable coupling 9. The connector 13 may be of rubber-like material, ductile metal or laminated synthetic resin, or may be a spring steel wire coil. In operation the drive to shaft 14 is applied, as rapidly as possible, when the end of the shaft 14 deflects rapidly, strikes the inner well of the bore 21, and thereafter continues to bounce round it striking a succession of blows while following a generally epicycloidal path.
Patent GB-1040697-A (GB)
Title: Pulse train generator including a tunnel diode
Inventor: BROOKS NORMAN WILFRED
IPC: H03K3/282
Filed: 1961-12-04
Abstract: 1,040,697. Semi-conductor pulse circuits. RANK-BUSH MURPHY Ltd. Dec. 4, 1962 [Dec. 4, 1961], No. 43258/61. Heading H3T. In a pulse generator, short duration pulses are produced by differentiating longer duration pulses from a tunnel diode, the capacitance of the tunnel diode circuit being varied so as to produce a substantial difference between the times of rise and fall of the longer duration pulse. This ensures that the differentiating circuit produces a shorter duration pulse only at the time of the leading (or trailing) edge of the longer duration pulse. As shown, the output of a crystal oscillator 21 at 100 kc/s. is passed via an emitter follower 28 to a tunnel diode 32 where it is converted into waveform B (Fig. 2). Waveform B is differentiated at 34 giving waveform E having both positive and negative pulses. The oscillator output A is also fed via an emitter follower 38 and a delay circuit 42 to a switching transistor 46 which is made conductive during the time indicated by the solid pulse at C. Capacitor 50 is then connected across tunnel diode 32 during this time hence the slope of the trailing edge of waveform B is reduced as shown at D. The negative pulses 13 from the differentiating circuit are thus substantially eliminated. Alternatively the positive pulses 11 may be eliminated by altering the delay introduced at 42 so that capacitor 50 is connected across the tunnel diode 32 during the leading edge of the pulse. The circuit may be employed to generate a harmonic spectrum.
Patent GB-1556035-A (GB)
Title: Hinge for all-glass doors
IPC: E05D5/02
Filed: 1976-10-22
Abstract: In this pivoting fitting for all-glass doors, a block body (11) can be fixed to the glass wing (10) respectively in the upper and the lower corner region of the latter; one block body is pivotably connected to a pivot pin (12) on a lower bearing (14) and the other block body is pivotably connected to a pivot pin (13) on an upper bearing (15), one of the two bearings being an integral part of a door closer. In order to make a simple pivoting connection between block body (11) and bearing (14, 15), without cutouts in the glass wing (10) being necessary, the pivot pins (12, 13) are arranged on the respective block body and not on the bearing. Furthermore, the pivoting connection is provided respectively below the lower and above the upper block-body longitudinal edge (11a). <IMAGE>
Patent GB-1036369-A (GB)
Title: Switching matrices comprising tecnetrons
IPC: H04Q3/52
Filed: 1964-10-26
Abstract: 1,036,369. Automatic exchange systems; transistor gating circuits. M. ROUZIER. Oct. 26, 1964 [Nov. 13, 1963], No. 43572/64. Headings H3T and H4K. Centripetal field effect transistors, called tecnetrons, are used as the cross-point element of a switching matrix, with their cathodes 11 and gates 12 connected to columns and rows respectively; they are held in a high impedance condition by a high potential on their anodes 13 from source Ea. The tecnetrons are rendered conductive, thereby interconnecting speech wires 20 and 30, by reducing the anode potential to value Ua, by triggering transistor 44, and by applying a gating potential through one of transistors 24. To change the tecnetron back to its high impedance state transistor 34 is unblocked to connect the gate to the cathode and transistors 44 and 24 blocked again. Triggering pulses for the transistors are derived from the decoder 200. An alternative switching matrix is illustrated (Fig. 4, not shown).
Patent GB-1206124-A (GB)
Title: Improvements in or relating to looms
Inventor: PICCOLI MARIO
IPC: D03D47/00
Filed: 1967-09-26
Abstract: 1,206,124. Shuttleless loom. SOMET S.p.A. SOC. MECCANICA TESSILE. 26 Sept., 1967, No. 43814/67. Heading DIE. In a loom in which weft inserters operated by flexible tapes meet at the middle of the shed to transfer weft from one to the other, the lower warp sheet, on which the tapes 3 run in the shed, rest on a track 9 of velvet or polished laminated plastic. The weft inserter heads 5 have a nylon weaving strip 11 attached to their rear face which runs against the reed; in the case of the inserter which takes the end of the weft into the shed, the strip is of L-shape to provide clearance 13 for the weft T, whereas the inserter which receives the weft at the middle of the shed has a rectangular wearing strip.
Patent GB-1004989-A (GB)
Title: Improvements in or relating to electric logical circuits
Inventor: CLARKE RAYMOND WILLIAM
IPC: H03K19/084
Filed: 1961-12-11
Abstract: 1,004,989. Transistor logic circuits. MULLARD Ltd. Dec. 11, 1961, No. 44235/61. Heading H3T. An exclusive DR circuit for producing an output in the presence of one only of three or more signals A, B, C comprises two transistors T 1 , T 2  having a common constant current emitter supply S1, and an AND gate such as D11, D12, or D14, D15 and D17, D18 for each combination of two input signals, an OR gate such as D20, D21, D22 connecting each AND gate to one base and a further OR gate such as D13, D16, D19 connecting each signal to the other base, constant current supplies being provided for each base and each OR gate. If all the inputs are the same (all nought or all one) transistor T1 is conductive and T2 cut off but if a single (positive-going) input is applied the OR gate D13, D16, D19 operates to cause transistor T1 to be cut off and the emitter supply to be diverted to T2. More than two inputs will cause one at least of the AND gates to operate and so maintain T1 conducting by passing an appropriate current through the OR gate D20, D21, D22. An additional constant current supply may be provided for each transistor so that collector current is not fully cut-off when the common constant current emitter supply is diverted from one transistor to the other. The exclusive OR signal is available at one collector and the inverse signal at the other, the logic of the collectors being interchanged if the input signals are of opposite polarity.
Patent GB-1068035-A (GB)
Title: ª-(substituted-thio) (acylphenoxy and acylphenylmercapto) acetic acids
IPC: C07C49/825
Filed: 1963-11-11
Abstract: Novel compounds of the general formula <FORM:1068035/C2/1> (wherein A represents O or S, R represents a hydroxyalkyl, haloalkyl, alkoxycarbonylalkyl, thiocarbamoylalkyl, aminoalkyl, amino-substituted carboxyalkyl, phenylalkyl, nuclear carboxy-substituted phenylalkyl, alkenyl, cycloalkyl, aryl, carboxyphenyl, phenyl substituted by an alkoxycarbonyl or an amido group, halophenyl, alkylphenyl, alkoxyphenyl, alkanoyl, thioalkanoyl, benzoyl or 2-(g -L-glutamylamino)- 2 - (N - carboxymethylcarbamoyl) - alkyl radical, or, in bis-compounds, a carboxymethoxybenzoylalkyl, carboxymethylmercaptobenzoylalkyl, carboxymethoxybenzoylalkylmercapto-(C1- 5 alkyl) or carboxymethylmercaptobenzoylalkylmercapto -(C1- 5 alkyl) radical, R1 represents H or a C1- 5 alkyl radical, R2 represents H or a C1- 5 alkyl, trihalomethyl- or hydroxy-substituted C1- 5 alkyl, C1- 5 alkoxy or alkylthio, or cycloalkyl radical or a phenyl or phenoxy optionally carrying halogen or C1- 5 alkyl or alkoxy substituents, and each of R3, R4, R5 and R6 represents H, halogen or a trihalomethyl, C1- 5 alkyl or alkoxy, carboxyalkoxy, OH, NO2 or acylamino radical or two of them on adjacent ring carbon atoms are linked to form a second 5- or 6-membered carbocyclic ring are prepared by reacting a compound of the general formula <FORM:1068035/C2/2> with a mercaptan R*SH (wherein R* has any of the meanings of R except the last four), or, for the bis-compounds, with H2S or a C1- 5 alkanedithiol.  The preparation of the starting materials by the process of Specification 998,835 is described. Pharmaceutical compositions, e.g. tablets, pills, capsules and injections, having diuretic, natriuretic and chloruretic action, comprise, in association with an inert diluent, carrier or coating, a compound of the first general formula above, which may be in the form of a salt.  In an example the active ingredient is prepared in the presence of various additives, giving a powdered mixture to which pyrogen-free water is added before use, whilst in another example an injectable suspension is produced directly by carrying out the reaction for preparing the active ingredient in pyrogen-free water in the presence of the additives.
Patent GB-1402416-A (GB)
Title: Separation of n-paraffins
IPC: C07C7/13
Filed: 1971-09-24
Abstract: 1402416 Purifying gases BRITISH PETROLEUM CO Ltd 15 Sept 1972 [24 Sept 1971] 44632/71 Heading B1L [Also in Division C5] n-Paraffins are separated from mixtures of the same with branched chain and/or cyclo paraffins in a process employing 3 or more beds of 5 molecular sieve at 300-450C which preferentially absorbs the n-paraffins and having stages of absorption, purge to remove superficially absorbed material and desorption to remove the n-paraffins and maintaining a continuous feed by controlling the three stages so as to satisfy the formula (P+d)/f= no. of absorbers-1, where P, d and f are the durations of the purge, desorption and absorption stages respectively, and after a time taking one bed out of use and adjusting the durations of the stages of the remaining beds to maintain operation in accordance with the above formula. The specified feeds are gasoline, kerosine and gas oil.
Patent GB-1130139-A (GB)
Title: Electronic tuning system
Inventor: PAMPEL FRANK LINDEN
IPC: H03J3/18
Filed: 1967-10-02
Abstract: 1,130,139. Tuning control; automatic frequency control. MOTOROLA Inc. 2 Oct., 1967 [1 Nov., 1966], No. 44658/67. Headings H3A and H3Q. Tuned circuits of a radio receiver include a varactor diode, such as 14, Fig. 1, in series with a blocking capacitor (44) the charge on which is adjustable both manually and automatically to vary the tuning of the receiver. Manual control is by means of switches 42, 84 and 86 which may be closed momentarily to charge the blocking capacitor to the potentials set on potentiometers 34A-34C; the switches may be ganged with the potentiometer control so that they are closed whenever the control is adjusted. In a modification, Fig. 2 (not shown), the switches are connected through isolating resistances to a single common potentiometer. An automatic frequency control voltage on line 60 is derived from a frequency discriminator 22 via an integrator 58 and is normally zero. If the voltage goes negative a transistor 54 conducts to allow the blocking capacitors to discharge to earth through respective resistances 62, 64 and 66; if the voltage goes positive a transistor 65 conducts thereby allowing transistor 74 to conduct and allow the blocking capacitors to charge from the source +V. In a modification, Fig. 3 (not shown), the gate of transistor 54 is connected through a diode (98) to a capacitor (96) which can be charged by momentarily closing a switch (92). The charge thereby stored on the capacitor is just sufficient to allow the transistor 54 to conduct for the time required for the blocking capacitor to discharge sufficiently to tune the receiver to the next adjacent channel. A similar arrangement (Fig. 4, not shown) may be applied to transistor 56 for tuning in the opposite direction. The receiver shown is a FM receiver and the discriminator 22 is the demodulating discriminator; in an AM receiver a special discriminator would be provided for deriving the required AFC voltage.
Patent GB-1510667-A (GB)
Title: Non-woven material for disposable wet wipes
IPC: D21H17/36
Filed: 1975-10-29
Abstract: 1510667 Cleaning pads; paper &c. containing disinfectant &c. DEXTER CORP 29 Oct 1975 [6 Jan 1975] 44658/75 Headings A4F and A4N [Also in Division D2] A wiping cloth, e.g. for personal hygienic use, and adapted to be packaged and dispensed wet comprises a non-woven web made from a fibre blend containing at least 30% of bulk imparting fibres such as a high alpha cellulose fibres, up to 40% of low alpha cellulose fibres, e.g. bleached kraft, and lesser amounts of synthetic fibres and optionally, long vegetable fibres, the web also containing insolubilized p.v.a. (e.g. at 3-15%) distributed throughout, and having a basis weight less than 1À4 oz/sq yd, a thickness of at least 10 mils and a density of 0À13-0À2 g/cc. Preferably the wet tensile strength is 900-1700 gm/in and the wet mullen value 7-13À5 p.s.i. The synthetic fibres may be viscose or acetate rayon fibres and the long vegetable fibres may be manila or indian hemp, caroa, flax or jute. An exemplary fibre blend is 50% high alpha cellulose fibres, 25% bleached kraft fibres, 15% rayon fibres and 10% manila hemp fibres. The cloth may be perfumed or scented, and may be wetted with a bacteriocide, fungicide, bacteriostat, glycerine or lanoline. The cloth may hold 5-6 times its own dry weight of water.