baber/WOPTO huggingface dataset:
Patent GB-1272086-A (GB)
Title: Discharge lamp apparatus
IPC: H05B41/04
Filed: 1969-05-06
Abstract: 1,272,086. Starting systems for fluorescent lamps. MATSUSHITA ELECTRIC INDUSTRIAL CO. LTD. 6 May, 1969 [17 May, 1968; 21 May, 1968 (2); 24 May, 1968 (2)], No. 23161/69. Heading H2H. Apparatus for starting a fluorescent discharge lamp 8 comprises a semi-conductor breakdown device 11 connected in parallel with the lamp, the characteristics of the device being such that the breakdown voltage thereof is lower than the supply voltage but higher than the potential across the lamp when running and the blocking voltage of the device being higher than the supply voltage. The device may be a unidirectionally or a bidirectionally conducting diode thyristor connected in series with a conventional diode. One or more of the diode thyristors may be used in the circuit and the ballast impedance 10 may comprise one or more windings.
Patent GB-1114763-A (GB)
Title: Pipeline network simulator
Inventor: PROSSER LIONEL ERNEST
IPC: F15D1/00
Filed: 1964-06-04
Abstract: 1,114,763. Valves. BRITISH HYDROMECHANICS. RESEARCH ASSOCIATION., 1 June, 1965 [4 June, 1964], No. 23170/64. Heading F2V. [Also in Division G3] A fluid model (see Division G3) comprises pipe and demand simulators, each having an adjustable orifice which in use is set to a predetermined size corresponding to the physical data of a pipe or to the consumption demanded. Each orifice retains the same triangular shape for each setting. Each simulator comprises a body 36, a member 38 with a triangular aperture (not shown) and two members 48 attached to a screw-threaded stem 50. The position of the members 48 is set by rotating a nut 52 which may have marks thereon which coast with a reference mark on a block 59 so that the angular position of the nut 52 may be determined. Upon each complete rotation of the nut one stripe carried by a member 60 emerges from the nut.
Patent GB-954499-A (GB)
Title: Process for the manufacture of finely-divided silicic acid
Inventor: WOLF FRIEDRICH
IPC: C01B33/16
Filed: 1960-07-01
Abstract: Finely-divided silicic acid of apparent density 40-70 g./1 and 5-30 mm  size is prepared by adding a calculated amount of H2SO4 to a waterglass solution at an elevated temperature in two stages, part of the acid being added so that the solution becomes turbid, interrupting the acid addition until a silicic acid hydrogel precipitate starts to form, adding the remainder of the acid, eliminating part or all of the water from the hydrogel precipitate by adding a water-soluble organic liquid, filtering the liquid from the precipitate, drying the solid cake obtained and comminuting the dried mass to a powder.  The liquid may be glacial acetic acid, or methanol, or a 50/50 mixture thereof, and need not be anhydrous, e.g. a concentration of 90-95%, the remainder water. The precipitate may be washed free from electrolyte, suction filtered and partially dried to a residual water content of 50% before treatment with the liquid. The precipitate may be suspended in the liquid, or the liquid may be sucked through.  The final drying may be at 100-150 DEG  C. Alternatively, the hydrogel precipitate may be treated with acetic anhydride to react with the water, and liquor sucked off as described.  H2SO4 (s.g. 1.032) is run into water glass (s.g. 1.101) at 80-90 DEG  C. with vigorous stirring until turbid. After the H2SO4 is cut off a gel separates as stirring continues.  The aqueous organic liquids may be concentrated by distillation, and re-used in the process, and the water-soluble organic liquid may be replaced by a water-insoluble organic liquid wholly or partially. The liquid treatment may be repeated several times.
Patent GB-424286-A (GB)
Title: Improvements relating to condenser microphones and circuit arrangements for use therewith
IPC: H04R19/04
Filed: 1933-08-19
Abstract: 424,286. Circuits for electrostatic instruments. ROUND, H. J., Westfield, Muswell Hill, London. Aug. 19, 1933, No. 23194. [Class 40 (iv)] A condenser microphone which, as in a broadcasting station for example, is situated at some distance from the amplifying apparatus is connected thereto through a step-down transformer TI, a length of cable W and a step-up transformer T2, the transformers being such that the two natural resonances of the circuit occur at frequencies of 100 or lower and 6000 or higher. Each transformer comprises a large number of turns wound on a core of high permeability alloy and sub-divided into interleaved sections which are air-spaced to obtain low self-capacity. The local battery is connected between one wire of the cable and the sheath LS, the latter being connected to one side of the microphone C. The resonance peak at the lower frequency may be flattened by a shunt resistance across the output, and that at the higher frequency by a series resistance or a shunt condenser.
Patent GB-1131973-A (GB)
Title: Improvements in and relating to carpet sweepers
IPC: A47L11/33
Filed: 1966-05-24
Abstract: 1,131,973. Dust pans. S.A. BRUSH CO. Ltd. 24 May, 1966 [27 May, 1965], No. 23208/66. Heading A4F. A carpet sweeper has supporting wheels 6 disposed in cavities between the side walls 2 of the sweeper casing and plates provided with slots 8 receiving the wheel axles 7. Springs 16 urge the axles 7 towards each other so that the wheels drivingly engage rollers 15 on the brush 22 (Figs. 2 and 4, not shown). Combs (not shown) comprising prongs of triangular cross-section extend downwardly from the roof of the casing to remove matter from the brush. Dust trays 25, 26 are mounted on hinges 28 and may be held either in an operative or a discharge position by springs 30.
Patent GB-295587-A (GB)
Title: Improvements in the manufacture and production of liquid and other hydrocarbons and derivatives thereof by the destructive hydrogenation of carbonaceous materials
IPC: C10G1/08
Filed: 1927-08-09
Abstract: 295,587. I. G. Farbenindustrie Akt.- Ges. Aug. 9, 1926, [Convention date]. Divided on 275,670. Hydrogenation, destructive.-The destructive hydrogenation of coals, tars, and products thereof is carried out at a pressure of at least 26 atmospheres, and preferably at 50 atmospheres, in the presence of a catalyst consisting of metallic lead or tin on supports of magnesia or magnesite. The catalysts may be used alone or mixed with other substances. Gases containing combined hydrogen capable of being set free in the reaction vessel may be used in place of hydrogen, but care must be taken that those parts of the apparatus which come in contact with the hot reacting materials are free from substances which would lead to the formation of methane and the separation of carbon. The process may be carried out in the liquid or vapour state, and the material to be treated may rest on porous plates. The Specification as open to inspection under Sect. 91 (3) (a) stated that compounds of lead or tin could also be used as catalysts. This subject-matter does not appear in the Specification as accepted.
Patent GB-1446413-A (GB)
Title: Molding glass articles
IPC: C03B11/12
Filed: 1973-05-16
Abstract: 1446413 Moulding glass PILKINGTON BROS Ltd E COEN E J PARRY and R C STEERE 18 Oct 1973 [20 Oct 1972 16 May 1973] 48446/72 Heading C1M A glass article, e.g. a lens blank 19 (Fig. 1), is prepared by supplying a gob of molten glass to an open press mould, closing the mould to shape the gob, regulating the mould temperature and time of closure so that, on completion of moulding, the glass at the surface of the article has a viscosity of at most 10<SP>10.5</SP> poises and the glass at the centre of the article has a viscosity of at most 10<SP>8</SP> poises, opening the mould, and rapidly transferring the thermally inhomogenous moulded article from the mould, without deforming the shaped article, while the surface viscosity remains not above 10<SP>10.5</SP> poises, directly into a cooling medium in which the glass is rapidly cooled to a temperature at which the surface viscosity is at least 10<SP>12.5</SP> poises. In one embodiment (Fig. 1) molten glass gobs are supplied from shears 42 (Fig. 4, not shown) alternately to bottom mould parts 3, 23 via shoots 35, 36. The glass is shaped by pneumatically operated plungers 4, 24. Sensing and control means are provided to facilitate heating or cooling of the bottoms and sides of the lower mould parts 3, 23. Control and timing means may also be provided to synchronize the glass feeding, glass moulding and ejection of the moulded article (Fig. 7, not shown). After withdrawal of the plungers 4, 24, the lower mould parts 3, 23 are rotated (by means of tables 5, 25, on which the parts 3, 23 are mounted) about horizontal axles 6, 26, allowing the moulded products 19 to fall into cooling fluid 17 maintained, at a desired temperature, in tank 16, so that the glass is tempered. The cooling fluid may be an oil of flash point above 300‹ C., or molten inorganic salt. The tempered product, e.g. lens blanks 19, may be removed from tank 16 by conveyer 18, and may subsequently be annealed. In an alternative embodiment, Fig. 13, the moulded product (e.g. lens blank A) may be ejected from lower mould part 3 by a jet of compressed air from nozzle 250 (e.g. at a pressure of 0À7-4 kg./cm.<SP>2</SP>), and allowed to fall, through trajectory B, into tank 16. In either of the above embodiments the quenching may be carried out by one or more gas streams.
Patent GB-1431221-A (GB)
Title: Apparatus for measuring the characteristic resonance frequency of an electric element
IPC: G01R17/00
Filed: 1973-05-17
Abstract: 1431221 Measuring resonant frequency: testing Piezo-electric pick-up SOC NATIONAL D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION 17 May 1973 [17 May 1972] 23517/73 Heading G1U The resonant frequency of a device 1, Fig. 8, under test, e.g. a Piezo-electric crystal, is determined by the following method:- (a) a voltage E of a frequency below the expected resonant frequency is applied to both the device under test and a reference circuit 26, (b)the voltages S O  and S M  produced by the device under test and the reference circuit respectively are compared 27, and the parameters #, #' of the reference circuit are adjusted 11 to minimize the difference signal #. (c) the frequency of the voltage E is then swept and that frequency which produces the largest difference signal E is determined, the frequency being the required resonant frequency.  The method can be used for testing a Piezo-electric accelerometer, since an accelerometer in good condition should exhibit a resonance within a known frequency band. The reference circuit 26 is the electronic equivalent of the left-hand arms 7, 8, 10, Fig. 1, of a bridge ABCD, and the method could be implemented manually by balancing the bridge, by means of resistor R1 and capacitor C1, and then sweeping the frequency of its energizing voltage. However, according to the invention the method is implemented automatically and block diagrams of two suitable circuits are described Figs, 4 (not shown), and 8 the former circuit also showing how the frequency at resonance can be measured digitally. A possible electronic construction of the reference circuit 26 is also described Fig. 7 (not shown).
Patent GB-1060106-A (GB)
Title: A detergent flush feed for washing machines
IPC: D06F39/02
Filed: 1965-06-02
Abstract: 1,060,106. Washing-machines. O. SCHARPF and E. SCHARPF, [trading as GEBR. SCHARPF KOMM.-GES MASCHINENFABRIK]. June 2, 1965 [June 4, 1964], No. 23597/65. Heading D1A. A detergent flush feed comprises a floor portion 12 from which detergent is washed through an opening 14 into a washing machine by water entering through a supply pipe 16 and channel 20, part of the supply of water however from the pipe 16 being channelled separately to by-pass the detergent and feed directly into the opening 14, and has tiltable cup 26 containing separate additives which is tilted by the action of the incoming water on the baffle 20. The cup 26 can be placed in position before the washing operation in which case the additive in it goes into the washing water or may be placed in position after the washing water has been run into the drum in which case the additive is mixed with the rinsing water. In a modification (not shown) the tipping cup may have two compartments rigidly joined together.
Patent GB-189861-A (GB)
Title: Improvements relating to armatures of direct-current electrical machines
IPC: H02K3/12
Filed: 1921-09-05
Abstract: 189,861. Fletcher, G. H., and Metropolitan-Vickers Electrical Co., Ltd. Sept. 5, 1921. Coils and conductors; cores. - An armature winding for use in stepped or tapered slots is formed of conductors or coils having different thicknesses on the two sides of a turn. Fig. 2 is a section of the conductor shown in Fig. 3, and the part 2 may be formed by re-rolling one-half of a conductor having the shape 3. For a tapered slot, a bar 3, Fig. 6, may be similarly treated. Alternatively, the two sides of a turn may be cut from a single bar, Figs. 7 and 8, the intermediate parts being removed from between the sides 2, 3, or two bars of the required shapes may be welded together as at 11. Connection to the commutator segments 9 is such that the thick conductors 3 in the upper parts of the slots fit into the wider parts of the commutator necks 8. In a modification, Fig. 9, where the conductors are grouped together into rectangular coils, the slot has such a shape that the coil side which fits into the upper part 6 of a slot is twisted through 90‹ relatively to the side in the lower parts 5 of another set. When the slot is half closed, the upper coil side may be divided into two parts to facilitate insertion.
Patent GB-643009-A (GB)
Title: Improvements in or relating to the production of vitamin preparations and their related by-products
IPC: A61K31/59
Filed: 1946-08-09
Abstract: Vitamins A and D are recovered from saponified and solvent extracted whale and fish livers as well as from liver oils and fish oils, by separating the stearines by cooling the vitamin containing extract after which the vitamin concentrate is itself isolated from the extract solution thus obtained, or is dissolved in fat oil or fat, after which the glycerine is recovered from the soap solution which has been freed from solvent, and the aqueous soap solution is bleached by heating under pressure to a higher temperature, and rendered odourless by atomization into an evacuated vessel.  A detailed example is given.
Patent GB-1288358-A (GB)
IPC: G03B15/00
Filed: 1971-04-19
Abstract: 1288358 Photographic surveillance systems G BEHLES 19 April 1971 [9 March 1970] 23817/71 Heading G2A [Also in Division G4] A photographic or television camera to be used for surveillance purposes is concealed from view behind a semi-transparent convex mirror. As shown, the camera 3 is pivotally mounted at 4a on a stirrup piece 4 attached to the shaft of a toothed wheel 6, the wheel, and hence the camera, being rotatable by a motor 7. The camera mounting is within an opaque cylindrical body 1 whose lower end is closed by a transparent hemispherical dome 9 whose inner surface is metallized so that it acts as a semi-transparent mirror. An opaque hemispherical mask 10 closed by a plate 11 is provided inside the glass dome, the mask and plate having respective slots 12 and 13 see also Fig. 2 (not shown). The camera passes through slot 13 and its objective 3a is aligned with slot 12, this alignment being maintained since the mask 10 rotates with the camera. The device may be used together with similar but dummy devices which consist of the dome only, without any camera.
Patent GB-1280091-A (GB)
Title: Antibiotics yl 704
IPC: C07G11/00
Filed: 1970-05-18
Abstract: 1280091 Antibiotics YL 704 TANABE SEIYAKU CO Ltd 18 May 1970 [19 May 1969] 23930/70 Heading C2A The YL 704 antibiotic composition, which is soluble in methanol, ethanol, butanol, methyl acetate, ethyl acetate, butyl acetate, chloroform, acetone, ethyl ether and benzene; slightly soluble in water and insoluble in cyclohexane, n-hexane and petroleum ether; giving negative Tolleno, Fehling, Molish, Ninhydrin, biuret and ferric chloride reactions, positive ferric hydroxamate reaction, fading the colour of aqueous bromine and potassium permanganate solutions; showing reddish violet in concentrated sulphuric acid and tartar in concentrated hydrochloric acid at room temperature (these colours do not change with chloroform or n-butanol), may be prepared by cultivating Streptomyces platensis sp NRRL 3761 or a YL 704 producing mutant or variant thereof in an aqueous nutrient medium under aerobic conditions, and recovering the accumulated antibiotic from the fermentation broth. Preferably the cultivation is carried out under submerged aerobic conditions at 25 to 35 C. for 48 to 60 hours. The antibiotic is recovered by filtering the fermentation broth and (1) extracting it with a water-immiscible solvent at around neutral pH, and separating the antibiotic from the extract or (2) treating the filtrate with an adsorbent at neutral pH, extracting the adsorbent with an aqueous acidic acetone or alkanol, and separating the liberated antibiotic from the extract. The antibiotic composition YL 704 may be separated into components YL 704 A and YL 704 B by counter current distribution or column chromatography and these fractions may be subjected to column chromatography to separate them into the antibiotics YL 704 A 1  and A 2 , and YL 704 B 1  and B 2  having I.R. spectra (in nujol) as shown in Figs. 2 to 5 respectively. The antibiotic composition and its components form acid addition salts with inorganic acids (e.g. hydrochloric, hydrobromic, sulphuric and phosphoric acids) and organic acids (e.g. acetic, pyruvic, tartaric, citric, malic and aspartic acids). Therapeutic compositions comprise the antibiotic composition YL 704 or a component thereof or an acid addition salt thereof in association with a therapeutically acceptable carrier. The compositions may be administered orally or parenterally in the form of pills, tablets, capsules, solutions or suspensions.
Patent GB-781035-A (GB)
Title: Improvements in or relating to the polymerization of ethylene
IPC: C08F2/54
Filed: 1953-10-30
Abstract: Homo-polymers, copolymers or telomers of ethylene are prepared by subjecting the monomer to an absolute pressure of at least 23,000 lbs./inch2 in the presence of ionizing radiation of polymerizing intensity.  Electromagnetic radiation of high-frequency which has not been deflected by electric or magnetic fields such as gamma-radiation, e.g. from cobalt 60, or tantalum 182, or from naturally-occurring potassium 40, bismuth 214, proactinium 234, thallium 208 and lead 211, or X-rays from a generator is preferred. Copolymers with vinyl chloride and acetate, tetrafluoroethylene, maleic anhydride, diethyl and dimethyl fumarates and maleates, carbon monoxide, sulphur dioxide and acetylene, and telomers with carbon tetrachloride, isobutyric acid and anhydride, methyl propionate, dioxolane, mercaptans, bisulphites, alcohols, ethers, silicon halides, hydrogen chloride and hydrogen are listed.  Catalysts such as oxygen may be present together with a non-reactive carrier gas, organic liquid or water and the radiation may be intermittent and the unreacted material recycled, if desired.
Patent GB-858820-A (GB)
Title: Improvements in or relating to frequency sensitive control circuits
IPC: H02P9/42
Filed: 1958-07-25
Abstract: 858,820. Automatic frequency control systems; transistor switching circuits. WESTINGHOUSE ELECTRIC CORPORATION. July 25, 1958 [Aug. 12, 1957], No. 23994/58. Classes 40(5) and 40(6). In an aircraft A.C. supply system the lowest permissible frequency is controlled by a frequency discriminator comprising high- and low-pass filters 6, 7 and 9, 8 whose outputs are rectified and differentially combined to produce a positive or negative output applied to a D.C. amplifier and delay circuit 2, 3, which, for only one polarity of output from the discriminator and after a finite delay actuates a control device for correcting excessive frequency drop of the A.C. generator frequency. The D.C. amplifier 2 may comprise NPN transistors with Zener diodes 25, 26, 27 as D.C. coupling elements, and rectifiers 22, 23 at its input, so that only positive inputs are transmitted through the first transistor and, if so, the Zener diodes 25, 26 are respectively non- conductive and conductive, and the final transistor 29 conductive to short circuit the output capacitor 30 and make Zener diode 27 non- conductive and therefore the control device inoperative. But a negative input disables transistor 20, causing Zener diodes 25 and transistor 24 to become conductive, and blocking Zener diode 26 and transistor 29 so that capacitor 30 charges exponentially to the value rendering Zener diode 27 conductive after a time and energizing the control device.
Patent GB-337808-A (GB)
Title: Process for the manufacture of hydroxy-di- or triarylmethane compounds
IPC: C07C303/06
Filed: 1929-08-06
Abstract: 337,808. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). Aug. 6, 1929. Moth-proofing ; proofing compositions. - The hydroxy di- and tri-arylmethanes prepared according to Specifications 316,900, 330,893, 330,894, 333,561, 335,547, 337,832, and 338,126 after sulphonation are used for protecting wool, fur or the like, against moths or other pests. According to examples, the following compounds are sulphonated with concentrated sulphuric acid 2-hydroxy-3 : 5-dibrom (and dichlor) diphenylmethane and derivatives thereof halogenated in the unsubstituted phenyl nucleus, and the products obtained by condensing 1 molecule of pchlorphenol with 1 molecule of 3 : 5-dichlor-2- hvdroxybenzyl alcohol, and 2 molecules of p-chlorphenol with 1 molecule of formaldehyde, benzaldehyde, p-chlorbenzaldehyde or 3-hydroxy-2 : 4 : 6-trichlorbenzaldehyde. The sulphonation of a crude product derived from formaldehyde and pchlorphenol and containing a compound of the formula : is also described. ,According to further examples,. products obtained by condensing 1 molecule of ochlorbenzaldehyde or 2 : 6-dichlorbenzaldehyde with 2 molecules of 2 : 4-dichlorphenol are sulphonated with oleum. Chlorsulphonic acid is also mentioned as a sulphonating agent. The wool &c. may be protected against moth by treatment with a solution of the proofing agents in organic solvents or the agents may be added to a dyebath whereby the fibres are simultaneously dyed and protected.
Patent GB-1500684-A (GB)
Title: Underwater vehicle
IPC: G05D1/00
Filed: 1971-04-19
Abstract: 1500684 Underwater vehicle VEREINIGTE FLUGTECHNISCHE WERKE - FOKKER GmbH 19 April 1971 [14 April 1970] 24106/71 Heading B7A An underwater vehicle is controlled, through a radio link, from either a land- or ship-based transmitter. The vehicle covers a predetermined course determined by a stored program carried in the vehicle. The vehicle is caused to surface periodically and to receive the command radio signals on a receiver switched on during the surfacing interval. The vehicle observes and stores information which may be transmitted back to command point. To prevent unauthorized handling, the vehicle may have a self-destruction unit, and, to prevent discovery by enemy underwater appliances, the vehicle may carry a sensor to switch off its drive and other sources of noise. It may also seek protection by diving.