baber/WOPTO huggingface dataset:
Patent GB-1529114-A (GB)
Title: Power supply circuits
IPC: H02M5/45
Filed: 1977-03-31
Abstract: 1529114 Power supply circuit for induction cooker: frequency changers DIAMOND H CONTROLS Ltd 31 March 1977 [21 June 1976] 25681/76 Headings H2H and H2F A power supply circuit for controlling the power supplied to an inductive load 5 (e.g. in an induction cooker) from an A.C. mains supply, comprises a rectifier circuit 13 for rectifying the A.C. mains supply, an inverter circuit for supplying current pulses to the inductive load from the rectifier circuit at a frequency substantially higher than the mains frequency, and a control circuit for periodically enabling the inverter circuit such that current pulses are applied to the load in groups to determine the power supplied to the load, the group repetition frequency being greater than that of flicker perceptible by the human eye. In Fig. 1, 14 is a filtering capacitor. The inverter circuit includes capacitors 3, 4 which are charged from the rectified mains, and thyristors 6, 10 enabled in turn via transformers 8, 11 to permit oscillatory discharge of the capacitors 3, 4 via the load 5. The oscillation is taken off via a transformer 7 to a circuit (Fig. 2, not shown) in which the zero-crossings, delayed, produce pulses to the transformers 8, 11 alternately, during the "up" portions of a duty-cycle pulse train. "Pan-absent" and "switch-on" inhibits are provided.
Patent GB-1155365-A (GB)
Title: Immunological Reaction
Inventor: MATUHASI TYOKU
IPC: G01N33/555
Filed: 1966-06-09
Abstract: 1,155,365. Immunological reaction. T. MATUHASI and T. KOBAYASHI. 9 June, 1966, No. 25756/66. Heading B1X. An immunological reaction product is formed by a method comprising introducing into a capillary tube an antigen-antibody reaction mixture comprising a solution containing an antigen, blood corpuscles having adsorbed on them the same antigen and an antiserum containing antibodies corresponding to the antigen and supporting the capillary tube at an angle of between 20‹ and 70‹ to the vertical until the erythorocytes have precipitated on the inner wall of the capillary. The capillary tube may be 1 mm internal diameter, 100 mm length. Sheep erythocytes, optionally formalinised, may be used, or erythrocytes treated with tannic acid. The antigen may be HCG γ globulin, insulin.
Patent GB-1126156-A (GB)
Title: Splitting machine
IPC: C14B1/14
Filed: 1967-06-05
Abstract: 1,126,156. Splitting - machines. MASCHINENFABRIK TURNER A.G. 5 June, 1967 [17 Aug., 1966], No. 25780/67. Heading B4B In a splitting-machine in which the material 1, e.g. rubber or leather to be split is fed to a splitting knife 3 by rollers 4, 5 and the roller 4 is prevented from sagging by a roller 6, the roller 4 has a metallic core 14 and a covering layer 24 of synthetic material. The rollers 5, 6 may each have a metallic core and a covering layer of synthetic material. Alternatively, one or more of the rollers 4 to 6 may be made wholly of synthetic material. The rollers may be fluted.
Patent GB-1180418-A (GB)
Title: Waveform Synthesizer
IPC: H04L27/12
Filed: 1967-06-05
Abstract: 1,180,418. Frequency dividers; telegraphy. C.I.T. COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. 5 June, 1967 [3 June, 1966], No. 25817/67. Headings H3F and H4P. [Also in Division G4] In a frequency-shift telegraphy system errors due to flutter are proportional to the frequencies used and are reduced by modulating high frequencies which are divided down to provide low transmission frequencies. In Fig. 1 a data source 1 is coupled through a filter 2 to cause a multivibrator 3 to operate at one of two output frequencies. The multivibrator feeds a reversible counter 6 which counts from 0 to 15 and is coupled to a decoder 7 which provides corresponding outputs at terminals 0-15 feeding a digital-to-analogue converter 8 which supplies an output voltage proportional to where i is the number of the input terminal actuated. The terminals 0 and 15 are connected to a bi-stable 5 connected to the control terminals of the counter 6 so that the counter counts from 0 to 15 and then reverses and so on, the output of converter 8 then being a stepped sine wave which is smoothed either in the output amplifier 9 or in a subsequent filter (not shown). In a modified arrangement, Fig. 3 (not shown), the counter counts from 0 to 7, and a further bi-stable reverses the sign of the output of the digital-to-analogue converter after each complete up-and-down counting cycle. In this circuit the input is also different, the data input being used to allow the output of one or other of two separate oscillators to pass to the counter.
Patent GB-462981-A (GB)
Title: Improvements relating to the production of liquid air and the production of oxygen therefrom
IPC: F25J3/04
Filed: 1935-09-18
Abstract: 462,981. Liquefying and separating gases ; refrigerating systems. MAIURI, G. Sept. 18, 1935, Nos. 25890/35, 19076/36, and 23397/36. [Class 8 (ii)] [Also in Group XIII] In the liquefaction and separation of gases by compression, expansion, and cooling by counterflow with the expanded gas, supplementary cooling is effected by heat exchange along a range of temperature, directly or indirectly by a refrigerant evaporating into an inert gas. The Figure shows apparatus in which air compressed by a pump a flows through heat-exchangers b, c to an evaporating coil in the base of a two - stage rectifier e, f wherein it is partly liquefied, and is expanded into the first stage of the column. Liquid oxygen from the second stage is delivered to a tank k from which part may be drawn off and part flows in gaseous form through the exchangers c, b and is delivered through a cock k<6>. Nitrogen flows through a conduit l and the heat - exchangers, part flowing off through an outlet l<2> and part being circulated by a fan &c. m<1> through a pipe m passing through the evaporator of a diffusion refrigerating-machine and again through the exchanger b. The refrigerating - machine comprises a boiler o surmounted by a rectifier, a condenserp from which the liquefied refrigerant flows to the evaporator n wherein it vaporizes in an atmosphere of inert gas circulated through the vaporizer and an absorber q and producing a range of temperature in the vaporizer ; absorbent circulates between the absorber and the boiler o. In a modification, the refrigerating- machine cools some of the compressed air, diverted from passing through the exchanger b ; alternatively, the heat-exchanger b may be located in thermal contact with the evaporator n. The coils of the refrigerating-machine may be cooled by water or by brine from a second refrigerator. The nitrogen circuit may alternatively be cooled by passing the nitrogen through a chamber containing solid carbon dioxide which volatilizes in contact with the gas. In a liquefaction plant in which air &c. is expanded and partly liquefied and the unliquefied gas returned to the compressor in heat exchange with incoming gas while the liquefied portion is further expanded and the resulting gaseous portion also returned in heat contact with the incoming gas, a portion is circulated through the evaporator of a refrigerating-machine.
Patent GB-537370-A (GB)
Title: Process for improving the wear-resistance of textile materials
IPC: D01F2/10
Filed: 1939-09-15
Abstract: 537,370. Artificial filaments, films, &c. TOOTAL BROADHURST LEE CO., Ltd., CORTEEN, H., FOULDS, R. P., MARSH, J. T., and ROSCOE, W. H. Sept. 15, 1939, No. 25893. [Class 2 (ii)] Wear-resistant artificial filaments, staple fibres, ribbons, bristles, horse-hair, films, and like extruded products are obtained from viscose to which a simple polyacrylic derivative has been added. There may be used polymers, emulsion polymers, or co-polymers of acrylic or methacrylic acid or esters thereof, substitution products of these, or mixtures. Interpolymers of acrylates with non acrylates such as vinyl acetate are excluded. When emulsions of these polyacrylic esters are added to viscose they are co-agulated but if the mixture is allowed to stand they slowly pass into solution. When polyacrylic acid dissolved in caustic soda is added to viscose spinning solution, this free acid is soluble in water but it may be rendered insoluble by treatment with aluminium acetate. In examples, emulsions of esters of acrylic or alkacrylic acids such as those sold under the Registered Trade Marks "Plextol," "Igeplast," "Plexigum," "Bedafin," C.M. or under the names Acrysol, Rhoplex, Acronal or Methacrol are added to viscose. The solution is spun into a salt bath or into an acidsalt bath. The filaments obtained may be easily crinkled e.g. by goffering rollers. Specifications 527,761 and 527,762 are referred to. The Provisional Specification describes also the addition of any synthetic rubber-like material to spinnable solutions including those containing cellulose esters or ethers, or proteins such as casein.
Patent GB-1248521-A (GB)
Title: Brush cleaning device
IPC: G03G21/00
Filed: 1969-05-21
Abstract: 1,248,521. Cleaning brushes. RANK XEROX Ltd. May 21, 1969 [May 24, 1968], No.26009/69. Heading A4F. [Also in Division G2] A flicking bar 741, mounted for rotation between a thin ribbon 743 and a flat spring element 744, removes toner particles from the bristles of a brush 720 which engages a xerographic belt. An exhaust duct 740 continuously exhausts the toner particles so removed. The bar 741 is coated with material removed in the triboelectric series from the material of the bristles to assist attraction of toner particles.
Patent GB-284004-A (GB)
Title: Improvements in or relating to directional aerial systems and feeding systems therefor
IPC: H01Q21/12
Filed: 1926-10-19
Abstract: 284,004. Franklin, C. S., and Marconi's Wireless Telegraph Co., Ltd. Oct. 19, 1916. Addition to 226,246. Directive signalling; aerials. - Relates to' a method of energizing an aerial array of the type described in the parent Specification. The lateral connections between the vertical oscillators are omitted and the system is energized in pairs so that currents in all the aerials are in phase. Each of the aerials 1 - - 4 may be of the type described in Specifications 242,342 and 285,106, radiation from alternate half-wavelengths being suppressed by means of inductances 5 - - 8. The lower end of each aerial is connected through tails 13 - - 16 to variable tapping points upon inductances 9 - - 12 which may be earthed. The feeding cables 17, 18, 20 are preferably of the type described in Specification 284,005, [Class 36, Electricity, Conducting &c.], comprising an earthed tubular conductor 17<a>, 18<a>, 20<a> and a central conductor 17b, 18<b>, 20b. The lengths of the cables 17, 18 may be adjusted to secure a relative phase displacement. The juncture at 19 may comprise an inductance 21 and a condenser 22 constituted by a length of cable. The effective resistance of the cables 17, 18 in parallel is made substantially equal to the surge impedance of the cable 20, whilst a similar relation holds between the aerials and the feed cables 17, 18. Specification 263,943 is also referred to.
Patent GB-686443-A (GB)
Title: Improvements in mining machines
IPC: E21C35/10
Filed: 1948-10-07
Abstract: 686,443. Planers. MAVOR & COULSON, Ltd., and SPROUL, J. C. Feb. 10, 1950 [Oct. 7, 1948], No. 26146/48. Class 68(i) In a double or single wedge cutter head planer for splitting mineral away from the face of the seam, each cutter head is connected to the frame 8 of the machine by a circular male unit 30, 31 bolted to the head and extending through and secured in a corresponding female formation 33 on the frame, the connection having a longitudinal axis parallel to the longitudinal axis of the machine so that said head can tilt sideways of the frame from its normal working position. Centralizing spring-loaded plungers 36 act to maintain the cutter head in the normal working position, i.e. with the cutting edges of the superposed cutters in an approximately vertical plane. When the machine is double-ended the trailing head is locked to the frame by a screw 40.
Patent GB-1039416-A (GB)
Title: Electronic signal translating circuits
IPC: H03G1/00
Filed: 1964-06-24
Abstract: 1,039,416. Transistors. RADIO CORPORATION OF AMERICA. June 24, 1964 [July 19, 1963], No. 26178/64. Heading H1K. [Also in Division H3] In a signal translating circuit (see Division H3), a field-effect transistor is formed on a substrate 12 of polycrystalline or. lightly doped P- type silicon coated with a heavily doped layer 28 of N-type SiO 2 . The SiO 2  is removed by photoetching where the gate electrode is to be formed and around the outer edges. The substrate is then heated in water vapour so that the exposed silicon areas are oxidized to form grown SiO 2 , impurities from the deposited SiO 2  layer diffusing into the substrate 12 to form source and drain regions S, D. The deposited SiO 2  is removed over part of the source-drain regions and source, drain and gate electrodes are applied by evaporation of chromium or gold. The input resistance of the gate electrode is 10<SP>14</SP> ohms. A connection 81 may be made between the source S and the substrate 12, alternatively an external connection may be made via the header 26. The location of the zero bias curve on the drain current/drain voltage characteristic (Fig. 3, not shown) is controlled during manufacture in dependence on the temperature and duration of heat treatment. The effect of the potential of the header 26, relative to the source and drain electrodes is explained.
Patent GB-1345795-A (GB)
Title: Lifting vehicle for mechanical handling
IPC: B66F9/065
Filed: 1971-04-19
Abstract: 1345795 Lift trucks POTAIN 19 April 1971 [2 April 1970] 26202/71 Heading B8H A lifting vehicle for mechanical handling operations comprises a mobile chassis 1, on which is slidably mounted a carriage 5 to which is pivoted an arm 8 which on itself is pivoted a jib 12, which is adapted to support a fork 15 or like load carrying member, there being a linkage 36 connected between the jib and the carriage in such a way that when the arm 8 is lifted by turning about its pivoted connection 7 with the carriage, the jib 12 is turned (Fig. 2) about its pivotal connection 11 with the arm, to raise the jib and its attached fork &c. A lifting mechanism comprising a toggle mechanism is connected between the carriage and the arm, and is adapted to be expanded, to lift the arm, by a jack 33. Links 17 and 19, together with the jib and arm respectively, form parallel linkages which maintain the attitude of the fork constant during its elevation. The attitude can be varied however by energization of a jack 22. As shown, the linkage 36 is a chain. It may however be a system of links (Figs. 6-9, not shown). The chassis may comprise two parts which are relatively pivotable (Fig. 10, not shown).
Patent GB-290098-A (GB)
Title: Improvements relating to wheels of motor road vehicles
IPC: B60B3/16
Filed: 1927-10-04
Abstract: 290,098. Bunting, D. G., and Ewart & Son, Ltd. Oct. 4, 1927. Spoke-covering discs. - The outer spoke-covering disc is formed in two parts c, d connected by bolts j passing through a ring f secured to the part c. The ring f is formed with arms g to which the inner disc h is attached by bolts i. The lapped edges l, m of the parts c, d are beaded to exclude moisture.
Patent GB-919193-A (GB)
Title: A method for producing powder containing oil or fat
IPC: A61K9/50
Filed: 1959-07-30
Abstract: In making powdery products containing edible oil or fat, a sucrose monoester of oleic, palmitic or stearic acid is employed as emulsifier to prepare an oil-in-water type of emulsion of the oil or fat in an aqueous solution of a non-toxic substance, exemplified by casein, gelatine, a gum or a starch, which dries to an oil-retentive film, and the emulsion is spray dried.  The oils or fats so powdered may be oily or fatty preparations of vitamins or essential oils.  The sucrose monoester may be obtained by the reaction of sucrose, in the presence of an alkali, with the fatty acid dissolved in dimethyl formamide.  Examples are of spray drying emulsions of (i) safflower oil containing antioxidant in a hot water solution of gelatine, casein, starch, gum arabic, sucrose and sucrose monostearate; (ii) a Vitamin A-containing oil in a hot water solution of gelatine, casein, dry skim milk, starch, dextrin, sucrose and sucrose monostearate; (iii) orange oil in a hot water solution of polyvinyl alcohol, gum arabic, gelatine, starch, dextrin and sucrose monostearate, and (iv) butter fat containing antioxidant, hot water, defatted powdered milk, gelatine, casein, starch and sucrose monolaurate.
Patent GB-191148-A (GB)
Title: Improvements in or relating to electric heating apparatus
IPC: H05B3/00
Filed: 1921-10-05
Abstract: 191,148. Phi-Kappa Syndicate, Ltd., and Watson, D. Oct. 5, 1921. Electric warmers.-Alternate coils of a heating element are connected to form two groups or sections c, c<1>, Fig. 4. Both groups may be used in series for a certain voltage, or for half that voltage the group c<1> can be short circuited by inserting a connecting plug between the terminal blocks d<1>, d<2>. A central hole a<1> may be provided in the element to receive a bolt for securing it in position. The element can be adapted for use as a bed warmer by providing it with a metal casing, the lid of which is detachable and carries the heating element and terminals. Clips projecting from the bottom of the casing secure the lower-end of the element when the lid is placed in position.
Patent GB-468055-A (GB)
Title: Improved educational and entertaining device
IPC: G09B1/06
Filed: 1935-09-23
Abstract: 468,055. Puzzles. LESLIE, I. I. Sept. 23, 1935, No. 26311. Void. Convention date, Sept. 25, 1934. [Class 132 (iii)] An entertainment or educational device comprises a base 4 and a member 5 preferably of different colour, having a portion in the shape of an animal or object cut out therefrom to form an upstanding border and a recess 6, the base of the recess being marked by printed or other lines or other indications into divisions 7 which bear indicia corresponding to indicia on loose sections 8 of the same contour as the divisions. Examples of corresponding indicia are a representation of an object-the name of the object, a number of articles-the corresponding numeral, a letter in one form-the letter in a different form or type, name of a colour-a colour to correspond, a numeralnumerals, the addition, subtraction, multiplication or division of which will result in the numeral on the base, or a question-the answer thereto. The indications forming the divisions 7 may be omitted and the sections 8 may be similar in size or contour.
Patent GB-260288-A (GB)
Title: Manufacture of aldehyde condensation products
IPC: C08G12/12
Filed: 1926-10-22
Abstract: 260,288. Soc. of Chemical Industry in Basle. Oct. 22, 1925, [Convention date]. Urea-aldehyde and thiourea-aldehyde condensation products.-By reaction between urea or a derivative thereof and acrolein or a polymer thereof condensation products are obtained which, according to the reaction conditions and particularly according to the proportions of the reagents, may be viscous liquids or gelatinous or vitreous solids. The reaction may be carried out with or without the use of catalysts and solvents, and in the latter event the temperature is preferably raised above the boiling point of acrolein, the operation being conducted in a closed vessel. When a catalyst is used, the reaction may proceed at temperatures below 50‹ C., suitable catalysts being sulphuric acid, acetic acid, caustic soda, ethylene diamine, and other organic or inorganic acids or bases, or acid or basic salts. The reaction may be assisted at the beginning by addition of a solvent, not necessarily in sufficient amount to dissolve the whole of the urea, or it may be moderated by addition of a diluent, suitable solvents or diluents being water, methyl or ethyl alcohol, or glycerine. The reaction may be carried out in stages. For example, one molecular proportion of urea may be treated with onehalf of a molecular proportion of acrolein to yield a viscous liquid product which may then be treated with acrolein in the same amount as before to yield a vitreous solid product. Formaldehyde or other aldehyde may replace acrolein in the later stage or stages, and a basic catalyst may be used in one stage and an acid catalyst in another. Examples describe the condensation of urea and acrolein under various conditions as indicated above, and also the condensation of urea and an acrolein resin and of thiourea and acrolein. The viscous liquid products are useful as adhesives or varnishes, and the solid vitreous products, to which dyes, fillers. &c. may be added, may be converted into shaped articles.
Patent GB-1223931-A (GB)
Title: Improvements in or relating to spin-stabilized explosive shell with base detonating fuse
Inventor: BIRKIGT LOUIS
IPC: F42C9/18
Filed: 1968-06-04
Abstract: 1,223,931. Explosive shells. BREVETS AERO-MECANIQUES S.A. 4 June, 1968 [9 June, 1967], No. 26432/68. Heading F3A. A spin-stabilized explosive shell comprises a base detonating fuze to ensure the firing of the charge 5 and 7 of the shell in the event of impact, the fuze comprising a spiral strip 14 which expands under the action of centrifugal force to arm the fuze, the constituent elements of the fuze, instead of being housed in a separate casing which is then inserted in a housing formed in the base 1 of the shell, are mounted directly in the housing, previously arranged to be able to receive said constituent elements, the housing being of sufficient internal diameter to allow the strip to unwind. The fuze is also arranged to provide muzzle safety and a self-destruction means. The spiral strip 14 is surrounded by an expansible split ring 16, and, is connected at one end to an inertia sleeve 17 which, on firing the shell, retards the unlocking of a striker 9 by the spiral strip. The unlocked striker is, however, still retained against the action of a spring 10 by locking balls 12 which are released in the event of impact or during the trajectory of the shell if the force of the spring 10 exceeds the centrifugal force acting on the balls 12. The explosive charge 7 contains hard fragments such as darts and is contained within a steel or plastics cap 6 including a plastics insert 8. A tracer 3 is screwed or crimped into the base of the shell. A sintered iron driving band 4 spins the shell.
Patent GB-1534929-A (GB)
Title: Method and apparatus for generating coherent 14 and 16 micron radiation
IPC: H01S3/0979
Filed: 1976-06-25
Abstract: 1534929 Lasers UNITED STATES DEPARTMENT OF ENERGY 25 June 1976 [10 July 1975] 26441/76 Heading H1C To produce an output wavelength of 13À9 Á or 16À1 Á from a CO 2  gas laser, a gaseous mixture of N 3  and Ar is passed through a glow discharge region 12<SP>1</SP> to produce a high vibrational temperature in the N 2 , and after supersonic flow through a nozzle bank 27 is mixed with and effects pumping of precooled CO 2  introduced in a plenum 10<SP>1</SP> through injection slots in the nozzles 28, the required output wavelength being obtained by directing a saturating radiation pulse of 10À6 Á or 9À6 Á from an external Q- switched CO 2  laser 21 into the optical resonator 23, 24 of the excited CO 2 .