baber/WOPTO huggingface dataset:
Patent GB-1480001-A (GB)
Title: Synthesis gas purification
IPC: C01B32/40
Filed: 1975-09-22
Abstract: 1480001 Purifying combustible gas TEXACO DEVELOPMENT CORP 22 Sept 1975 [10 Oct 1974] 38747/75 Heading C5E Synthesis gas comprising carbon monoxide and hydrogen and containing entrained particulate carbon is purified by contacting with a liquid comprising at least one molten metal carbonate. The gas treated can be produced by the partial oxidation of a fuel, such as coal, coke, fuel oil or natural gas, with an oxygencontaining gas. The purification can be effected by passing the gas upwardly through a bath of molten lithium, sodium and/or potassium carbonate, e.g. at 750-1750 F., to remove sulphur compounds and particulate carbon. The molten carbonate can be regenerated with carbon dioxide.
Patent GB-1197077-A (GB)
Title: Improvements in or relating to Decoupling Circuits
IPC: H03H7/48
Filed: 1967-08-23
Abstract: 1,197,077. Distributing signals. TELEFUNKEN PATENTVERWALTUNGS G.m.b.H. 23 Aug., 1967-[31 Oct., 1966], No. 38908/67. Heading H1W. Two sources U 1 , U 2  of impedances Z are coupled to two loads R a , Rb by means of four line transformers (sometimes called pulse transformers) of characteristic impedance Z forming the arms of a Wheatstone bridge. The loads are of impedance Z/2. As indicated by the arrows, pulse voltages from either of the sources are distributed between the line transformers and are added in the loads. If the sources are in phase, the voltages from one source are added to those of the other source in load R a  and subtracted from same in load Rb. Antiphase pulses produce addition in R b  and subtraction in R a .
Patent GB-884004-A (GB)
Title: Improvements in metallized ceramic member and means and methods for manufacturing
IPC: C04B41/51
Filed: 1959-11-17
Abstract: 884,004. Powder metallurgy. GENERAL ELECTRIC CO. Nov. 17, 1959 [Nov. 19, 1958], No. 38932/59. Class 82(1). [Also in Groups XXII, XXIII and XXXVI] Ceramic surfaces are metallised by applying a powder mixture comprising up to 40% manganese, 50% to 90% of molybdenum and/or tungsten and 1% to 50% by weight of a low alkali lead free borosilicate glass and sintering the coated body in a non oxidising atmosphere such as hydrogen to 1250‹C. During sintering the glass reacts with the manganese and ceramic forming a vacuum tight crystalline interface bonding the metals to the ceramic. The powders are mixed in a liquid vehicle such as acetone, Annyl or methyl acetate or xylene plus a binder such as methyl or isolintyl methacrylate or nitrocellulose and applied to the ceramic by spraying dipping brushing or scrubbing. A solder metallic metal such as nickel and copper may be included in the mixture and the metallised layer may also be coated with nickel or copper e.g. by electroplating followed by sintering at 1000‹C. The metallised ceramic can be used to form vacuum tight ceramicceramic or ceramic-metal seals, an alloy such as a silver copper entectic filler forming the bond between the metallised ceramic and the other component. In Fig. 3 a ceramic body 5 with a metallised layer of molybdenium 7 bonded to the ceramic by the glass reaction layer 8 is united to a metal member 4 by the solder layer 9. Specification 656,724 is referred to.
Patent GB-1177776-A (GB)
Title: Process and apparatus for Cleansing Contaminated Strips of Water
Inventor: MEISSER MARC
IPC: E02B15/04
Filed: 1967-08-25
Abstract: 1,177,776. Scavenging vessels. M. MEISSER. 25 Aug., 1967, No. 39219/67. Heading B7A. Oil is removed from the surface of water by propelling vessel 1 with scoop 25 in the lowered position. Large debris is removed on to grid 19 by periodically rotating the scoop while oil passes under float 10 into the zone 4 defined by floats 5, 6 and 10. A mineral material is poured into zone 4 until the solid becomes saturated with oil and is pumped to ejection outlet 18 where it is collected in a sack while the water flows under the grid 19. Small debris is also recirculated on to the grid 19 while the water is deflected from the sides of the vessel by plates or gutters. The vessel may be in the form of a catamaran (Fig. 5, not shown). ).
Patent GB-1425090-A (GB)
Title: Process of preparing silica xerogels
IPC: C09D7/12
Filed: 1973-08-20
Abstract: 1425090 Preparing silica xerogel MONSANTO CO 20 Aug 1973 [21 Aug 1972] 39259/73 Heading C1A SiO 2  xerogel is prepared by (a) adding an alkali metal silicate and a mineral acid (not HF) to an agitated aqueous heel, maintaining a batch pH < 4 and a temperature < 70‹ C., 10-35% of the total alkali total silicate being added in this step and forming a sol, (b) stopping the acid addition and gelling the sol at pH 4-6À6 and 50-70‹ C. and allowing to stand for at least 30 seconds, (c) recommencing mixing to disperse the gel, (d) introducing the remainder of the alkali metal silicate and acid at pH 4-6.6 and 75-100‹ C., (e) recovering the xerogel. The alkali metal silicate may be sodium silicate and the mineral acid is preferably commercial 93% H 2 SO 4  but may be H 3 PO 4 , HNO 3 , HBr or HCl. The product may be ground if necessary and may have the following physical properties:
Patent GB-831316-A (GB)
Title: Improvements relating to buttons
Inventor: NEWEY MARTIN MAGOR CEDRIC
IPC: A44B1/24
Filed: 1957-12-19
Abstract: 831,316. Making buttons. NEWEY BROS. Ltd. Oct. 15, 1958 [Dec. 19, 1957], No. 39439/57. Class 83 (2). [Also in Group VII] A covered button comprises a front member which is produced by forming a boss from sheet metal and flattening the boss to form a projecting elongated tongue 11 which is pierced to form an eye 12 then piercing a disc with the tongue at its centre and having peripheral teeth and then forming the blank into a dome 10 having an inturned flange with teeth on its free edge. The eye extends through a central slot in a back plate 15 having a peripheral portion 17 which is a press fit in the opening in the front member after it has been covered with fabric 18.
Patent GB-1090527-A (GB)
Title: A process for the polymerization of ª‰-lactones in suspension
IPC: C08G63/82
Filed: 1966-09-05
Abstract: Polyesters are made by polymerizing a b -lactone in suspension in a saturated aliphatic hydrocarbon in which both the monomer and polymer are insoluble (or substantially so) and which has a viscosity of at least 7.5 centistokes at the polymerization temperature used.  The suspension medium preferably has the desired viscosity per se, but it may have its viscosity raised to the desired value by the addition of a silicone, polyethylene, polyisobutene or a styrene/butadiene copolymer.  The lactone is preferably an a ,a -dialkyl-b -propiolactone in which the alkyl groups contain 1-4 carbon atoms. Polymerization is preferably effected at 20-120 DEG  C. in the presence of a catalyst (e.g. triphenylamine, triethylene diamine, tetraphenylphosphonium amide, triphenylbutylphosphonium bromide or triphenylphosphosphine).
Patent GB-1155756-A (GB)
Title: Portable Water Filter
IPC: B01J47/00
Filed: 1966-09-06
Abstract: 1,155,756. Filter; ion exchange. SPARKLER MFG. CO. 6 Sept., 1966 [15 April, 1966], No. 39767/66. Headings BID and BIJ. A filter 1 whose inlet 14 screws into a domestic water tap comprises a housing whose two parts 3, 4 screw together to urge a compression plate 20 on to a filter element 19 10 seal the element against part 3. Part 4 has lugs 12 to assist assembly, and a sealing ring 11 is forced upwards in its trapezoidal-seotion, annular groove by the water pressure to exclude water from the threads 30, 33. The element 19 may comprise a layer 25 of cellulose fibres, diatomaceous earth, active carbon and powdered silver bonded to layer 26 of cellulose fibres and diatomaceous earth only. An alternative element comprises powdered ion exchange resin (R.T.M.-Amberlite) and cellulose fibre. A unit (27) containing Amberlite beads may be attached to filter 1 downstream (Fig. 4, not shown). Parts 3, 4 and plate 20 may be polyethylene, polypropylene or ethyl cellulose. The element 19 is supported by a porous plate 6.
Patent GB-887812-A (GB)
Title: Electrophotographic printing elements and methods of preparing them
IPC: G03G5/09
Filed: 1957-12-23
Abstract: A resinous composition used in xerographic plates (see Group XXXVI) comprises zinc oxide dispersed in a styrene-butadiene resin.  In addition to zinc oxide the composition may contain selenium, zinc-cadmium sulphide, zinc sulphide or copper-activated zinc sulphide.  In an example 100 parts by weight white zinc oxide, and 20 parts styrene-butadiene resin were dissolved in toluene to give a solid concentration of 10% by weight and deposited on paper.  A second layer of similar composition but containing 0,02% by weight, based on the zinc oxide, of Rose Bengal is deposited on top of this. As an alternative the second layer contains instead of Rose Bengal, 0,0087% of anhydro-3,31-di-b -carboxyethyl 5,51-dichloro-9-ethylthiacarbocyanine hydroxide, 0,027% of 3-carboxymethyl - 5 - (3 - ethyl - 2,3 - dihydro - 2 - benzothiazolylidene) rhodanine, and 0,0087% 3,31 -dihydroxyethylthiodicarbocyanine bromide, or contains pink zinc oxide instead of the dye sensitized white oxide.  Specifications 885,716 and 885,717 are referred to.
Patent GB-1369363-A (GB)
Title: Transducer
IPC: H01L41/00
Filed: 1972-08-29
Abstract: 1369363 Piezoelectric transducers MOTOROLA Inc 29 Aug 1972 [7 Sept 1971] 40039/72 Heading H4J A piezoelectric element 21 (Fig. 2), preferably a ceramic disc, is attached to an element 30 by an elastomer interlayer 31 formed of material having a shear modulus which varies with the frequency of stresses applied to it. At relatively low frequencies the shear modulus of the interlayer 31 is relatively low and the interlayer 31 mechanically decouples piezoelectric element 21 from element 30. At higher frequencies of use in practice the shear modulus of the interlayer 31 is relatively high and the interlayer 31 mechanically couples piezoelectric element 21 to element 30. There is a sharp transition from low to high shear modulus just below the operating frequency range (Fig. 4, not shown). Element 30 is rigid. It may be of metal or may be a second piezoelectric element. The interlayer 31 may be of polyvinyl-butryal or polyvinyl acetate and provides a reliable bond between elements 21 and 30. The transducer may be made by subjecting a sandwich of ceramic element 21, polyvinylbutyral interlayer 31 and metal plate 30 to a temperature of 140 C. for 10 mins. Applications include production of sound pressure waves and actuation of mechanical devices. An alternative transducer (Fig. 3) includes a piezoelectric element 21<SP>1</SP>, an element 30<SP>1</SP> and an elastomeric interlayer 31<SP>1</SP>. Bonding agents 32<SP>1</SP>, 33<SP>1</SP> are provided and the interlayer 31<SP>1</SP> is chosen for its shear modulus characteristics, its bonding properties being unimportant.
Patent GB-1469349-A (GB)
Title: Flame retardant linear polyesters and process for their pre paration
IPC: C08G63/00
Filed: 1974-09-16
Abstract: 1469349 Flame retardant polyesters HOECHST AG 16 Sept 1974 [17 Sept 1973] 40280/74 Heading C3R A flame retardant linear polyester is derived from a dicarboxylic acid, a diol and from 3 to 20 mol. per cent, based on the total acid components, of a carboxyphosphoric acid of the formula in which R is a saturated cyclic or acyclic alkylene radical, an arylene radical or an aralkylene radical and R 1  is a C 1-6  alkyl group, an aryl group or an aralkyl group, or an ester or cyclic anhydride thereof. The polyester preferably contains at least 0À5 weight per cent of phosphorus. The polyester may contain fibres of glass, quartz, asbestos or carbon. The examples describe preparing polyesters from dimethyl terephthalate, optionally with di-methyl isophthalate, ethylene glycol and various phosphinic compounds of the above formula, e.g. 2 - carboxy - ethyl - methylphosphinic acid and 2 - methyl - 2,5 - dioxo - 1 - oxa - 2 - phospholane having the formula
Patent GB-1401009-A (GB)
Title: Digital data processing apparatus
IPC: G06F17/15
Filed: 1971-08-27
Abstract: 1401009 Data processing; metering flow NATIONAL RESEARCH DEVELOPMENT CORP 11 Aug 1972 [27 Aug 1971] 40295/71 Headings G4A and G4D [Also in Division H3] The invention relates to a digital data processing apparatus comprising a binary shift register 1 each stage of which is associated with a counter 9 which counts the number of clock periods for which that stage of the register is in a particular state and signalling means which issues a signal which identifies that counter 9 which first reaches a given value. In a system for measuring fluid flow of the kind in which the time taken for a pattern of turbulence or density variations to move between two detectors is measured, sampling circuits 4, 5 generate binary signals representing the conditions at the two detectors (not shown). The output of sampler 4 is progressively delayed by the stages of the shift register 1, the state of each stage being compared in EX-OR circuits 6 with the output of the other sampler 5. Coincidences are counted on the individual counters 9, the one that fills up first indicating the time to be measured. With the switches all in the positions shown the rest of the system operates as follows. As soon as any counter fills it issues a signal which resets all the counters to zero to begin the cycle again. At the end of each cycle the states of the counters are read serially into a shift register composed of bistables 36 (so that just one of the bi-stables 36 is in a set state at any time, said bi-stable corresponding to the counter 9 which filled first during the last cycle). At intervals a counting circuit of bi-stables 46 counts down the chain of bi-stables 36, issuing a pulse at P when it reaches the set bi-stable 36 and resetting the circuit, so that the frequency of pulses at P is inversely proportional to the number of the set bi-stable 36 and therefore to the delay of the corresponding stage 2 of the shift register 1; it is therefore proportional to the velocity of the fluid flow. The pulses at P gate out pulses from a high speed clock 53 to a frequency meter 55 which can be calibrated directly in velocity. If the various switches are alternatively set to their other positions the system operates as follows. The counters 9 count for a predetermined period and are then reset. At intervals the state of the counters is recorded by the corresponding bi-stable 36, so that the bi-stables 36 are set as their respective counters fill up. At intervals the bi-stables 36 are scanned and the result recorded on a cathode-ray tube 27 which thus continuously displays the distribution of the full counters. From the image on the tube 27 the relevant delay (or delays if there is more than one significant peak in the display) and the velocity of the flow can be deduced. An additional circuit (Fig. 2, not shown) permits identification and measurement of more than one peak.
Patent GB-1362251-A (GB)
Title: Method of and apparatus for driving and lining tunnels
IPC: E21D9/06
Filed: 1971-08-31
Abstract: 1362251 Wells etc; shields for miners GEWERKSCHAFT EISENHUTTE WESTFALIA 31 Aug 1971 [24 Sept 1970] 40566/71 Heading E1F A method of driving and lining a tunnel or the like elongated earth excavation comprises the steps of advancing strips 2 to cut a length of tunnel or like, excavating the earth enclosed by the strips, laying lining sections 15 to line the excavation as it advances, bring up a mold 17 to cooperate with the rear sections, inserting cement into the mould to form a section of permanent lining, and allowing the cement to dry before advancing the mold, the steps being repeated until the tunnel is complete. The strips are supported by a frame 4 and are attached singly on in groups to a drive frame 8 for advancement by jacks 9. A trench may be formed by the method. In a modification additional strips extend across a horizontal diameter. Tunnel side walls formed separately may be combined with an arcuate roof formed by the method of the invention.
Patent GB-1190457-A (GB)
Title: Production of Expanded Ethylene Copolymer Moldings.
IPC: C08J9/232
Filed: 1967-09-08
Abstract: 1,190,457. Moulding plastic substances. BADISCHE ANILIN- & SODA-FABRIK A.G. 8 Sept., 1967 [9 Sept., 1966], No. 41118/67. Heading B5A. [Also in Division C3] Expanded olefin polymer mouldings are prepared by heating and fusing together in a closed mould expanded particles of an ethylene copolymer which contains carboxylic acid groups and carboxylic acid t.-butyl or isopropyl ester groups. The particles may be compressed by 5 to 70% of their original bulk volume prior to, during or after heating, e.g. by compression by at least one, preferably two, sides of the mould towards the centre of the mould cavity. The process may be effected continuously, e.g. between four moving belts arranged to form a channel. The mould should be provided with means for the escape of gaseous and liquid components. Heating may be effected by hot gases or liquids, e.g. water, glycerol and aqueous salt solutions, by infra-red heating, or by the insertion of heating probes removed prior to compression of the particles. The mouldings may be subjected to size reduction and reheated under pressure in a mould. The products may be used for sound insulation and shock absorbing. Examples describe the moulding of expanded particles comprising talc and copolymers of ethylene with t.-butyl acrylate and acrylic acid, isopropyl methacrylate and methacrylic acid, t.-butyl methacrylate and methacrylic acid or isopropyl maleate and maleic acid, in metal moulds having four vertical perforated faces and perforated base and coverplates movable towards the centre of the mould cavity, heated by (1, 2 and 4) hot air and (3) hot water.
Patent GB-1152012-A (GB)
Title: Process for Treating Malodorous Organic Thiophosphate Pesticides
IPC: C07F9/02
Filed: 1966-09-14
Abstract: 1,152,012. Organic thiophosphate pesticides. AMERICAN 'CYANAMID CO. 14 Sept., 1966 [23 Oct., 1965], No. 41121/66. Heading A5E. An organic thiophosphate pesticide of improved odour is obtained by treating the malodrous thiophosphate with an aldehyde which forms a mercaptan-aldehyde compound of B.P. at least 175C. Aldehydes specified are formaldehyde, paraldehyde, acetaldeyde, benzaldehyde, p - tolualdehyde, salicylaldehyde, furaldehyde, methyl- and ethylprotocatechuic aldehydes, ethyl glyoxylate and a - methyl acrylicaldehyde. The thiophosphates listed in the Specification are O,O - dimethyl phosphorodithioate of diethyl mercaptosuccinate; O,O - diethyl S - (ethylthiomethyl) phosphorodithioate; O,O - dimethyl S - (N - methylcarbamoylmethyl) phosphorodithioate; 0,0 - diethyl S - p - chlorophenyl - thiomethyl phosphorodithioate; O,O - diethyl S - 2 - (ethylthio) ethyl phosphorodithioate; O,O - diethyl S - (N - isopropylcarbamoylmethyl) phosphorodithioate; O, O, O', O' - tetraethyl S,S'- methylenebisphosphorodithioate and 0,0 - dimethyl S - (4 - oxobenzotriazino - 3 - methyl) phosphorodithioate.
Patent GB-1176899-A (GB)
Title: Apparatus for Conveying Textile Articles
Inventor: VALENTINE NORMAN STANLEY
IPC: B65G53/00
Filed: 1968-08-29
Abstract: 1,176,899. Pneumatic conveyers. POLYMARK Ltd. 29 Aug., 1968 [11 Sept., 1967], No. 41206/68. Addition to 1,102,293. Heading B8A. The apparatus of the parent Specification, comprising an endless belt conveyer 23 for feeding textile articles into a pneumatic conveyer duct D, is modified in that the deflector member 22 for restricting the cross-sectional flow area within the duct adjacent the article inlet 21 is formed with rows of louvred openings 30. These openings 30 produce an air current around the end of the conveyer and ensure that the leading end of an article is lifted off the end of the conveyer and does not pass around the terminal roller 4 to cause jamming.
Patent GB-981639-A (GB)
Title: Improvements in or relating to transistor repeaters
Inventor: BARBER JOHN ANSTEY
IPC: H03F1/34
Filed: 1962-11-01
Abstract: 981,639. Transistor circuits. MARCONI CO. Ltd. May 2, 1963 [Nov. 1, 1962], No. 41302/62. Heading H3T. A transistor circuit arrangement comprises an emitter follower transistor VT1 with a first constant current device K2 in the emitter circuit of the transistor and a second constant current device K1 connected by a series resistor R4 to the emitter of the transmitter, whereby the current through the resistor combines with that from the first constant current device to ensure that the transistor VT1 is supplied with a constant emitter current, the voltage between the collector and emitter of the transistor being dependent on the voltage across the resistor R4. The current through and the voltage across transistor VT1 are accordingly both maintained constant. In the Figure the constant current devices each comprise a transistor with a Zener diode between the emitter and the base. The constant voltage across the resistor R4 is applied to the collector emitter circuit of transistor VT1 by an emitter follower VT4. The Zener diodes Z1, Z2 may be replaced by batteries.
Patent GB-1520928-A (GB)
Title: Multi-media production programmer
IPC: G05B19/16
Filed: 1975-10-09
Abstract: 1520928 Magnetic recording; editing H H VON TIESENHAUSEN 9 Oct 1975 [29 Oct 1974] 41445/75 Headings G4A and G5R Data and control signals are recorded on a single magnetic recording track using a combination record-playback head 14, the control signals being such that associated up-date circuitry can select individual data bits for alteration. As described the data bits may represent on-off commands for individual lamps or groups of bits may represent lamp fade commands, e.g. to control an educational/entertainment program as in a planetarium. The recording track is divided into sampling periods each up to 16 words long, each word containing 20 time slots, 16 for data and 4 for index pulses. Two time slots at the start and centre of each word contain two index pulses, and the start of each sampling period is marked by three index pulses in the first two time slots. Basic timing signals are produced by a pulse generator 18 which is synchronized from the index pulses during playback and by an external source 32 during recording of the index pulses. A word counter 50 selects output word decoders (serial to parallel converters) 62-66 in sequence to control loads 84, 86 according to the recorded data. The counter 50 also selects update word encoders arranged in pairs, e.g. 20, 26, these decoders having selector switches 76, 80 for each bit of the corresponding word. To record a zero, a selector switch 76 or 78 is set to earth the appropriate bit input of the required word encoder 20, 22, 24 to produce a clearing pulse for the complete time slot for that bit. To record a one, both switches 76, 80 for the bit are operated and a composite signal comprising the clearing pulse and a “-slot pulse of opposite polarity. Word counter 50 is stepped and reset by pulses derived by detection of the groups of two and three index pulses marking each word and the start of each new sampling period. If fewer than 16 words in a sampling period are required, the number of words may be set by a selector switch 68. There may be one or more associated audio tracks.
Patent GB-1088197-A (GB)
Title: A return stop for an electricity supply meter
IPC: G01R11/02
Filed: 1965-09-29
Abstract: 1,088,197. Electric energy meters. SIEMENS-SCHUCKERTWERKE A. G. Sept. 29, 1965 [Sept.29, 1964], No.41446/65. Heading G1Q. [Also in Division F2] A return stop for an electricity supply meter consists of a ratchet wheel 1, which is arranged for mounting on the rotor shaft of the meter, and a hooked pawl 2 which is mounted on a stationary member and provided with a hooked portion 22 of resilient plastics material adapted to engage with the ratchet wheel to restrain reverse movement of the rotor. The arm 21 of the pawl 2 is in the form of a length of spring wire bent into the form of a hairpin, the hook portion 22 of resilient plastics material being secured to the hairpin bend of the arm during a moulding operation.