baber/WOPTO huggingface dataset:
Patent GB-602259-A (GB)
Title: Manufacture of insecticidal compositions
Filed: 1945-06-11
Abstract: An insecticidal composition comprises a mixture with a solid, finely divided, inert diluent or carrier of a compound of the formula <FORM:0602259/VI/1> R1-S-R2, wherein R1 means one or more halogen atoms, of which one must be in the p-position, and/or nitro-groups, R2 means a halogen substituted aryl residue or an acylated nitrogen atom, and n means the numbers 0, 1 or 2.  The structural formulae of many compounds are given in which R1 is nitro-, chloro- or bromo-, and R2 chloro-, bromo-, nitrophenyl-, and acetamido-, propionamido, &c., and N-alkyl substituted derivatives thereof.  Other active substances, e.g., phthalonitrile, thiourea and derivatives, xanthone, thianthrene, sulphur, and copper compounds may be present in the admixture. In examples, (1) calcium carbonate is precipitated in a stock emulsion, prepared as in Specification 602,747, and the p precipitate containing the active substance dried in vacuo at 30 DEG C; (2) a mixture of calcium carbonate and talcum is saturated with an alcohol or acetone solution of 4 : 41-dichloro-diphenylsulphone and the solvent removed in vacuo.  Lime and a liquid fatty acid are then added, giving on grinding, a strewing and dusting agent; (3) a mixture of ground limestone, chalk and bentonite is saturated with an alcohol or acetone solution of the following compounds, the solvent distilled off in vacuo, and sodium carbonate and acid casein added to yield a mass which, mixed with water, is a spraying agent.  The compounds are: 4 : 41 dichloro-diphenylsulphone and/or or 3 : 4 dichlorobenzenesulphone-acetamide and xanthone or phthalonitrile.
Patent GB-854358-A (GB)
Title: Coated optical elements
IPC: B29D11/00
Filed: 1959-04-30
Abstract: An optical element having a resistance to scratching and abrasion of the same order as glass comprises a substrate e.g. of polymethylmethacrylate, a layer of germanium on the substrate, and a layer of an oxide of silicon upon the germanium layer.  The element may be a lens, window, windshield or mirror.  The layers are applied by vacuum evaporation, and preferably have thicknesses of 100-1,000 .u. for the germanium and 1,000-20,000  .u. for the silicon oxide. As described, the silicon oxide layer is formed by evaporating an equimolecular mixture of silicon and silicon dioxide in the presence of oxygen or air.
Patent GB-740077-A (GB)
Title: The production of beta-furoic acids
Inventor: LACEY RICHARD NORMAN
IPC: C07D307/68
Filed: 1951-06-21
Abstract: Beta-furoic acids are produced by heating with a mineral acid which is completely ionized in dilute aqueous solution or with a Friedel-Crafts halide catalyst an unsaturated gammalactone of the formula <FORM:0740077/IV(a)/1> where R1, R2 and R3 represent aryl, alkyl, or aralkyl groups, which may be prepared according to Specifications 740,076 and 740,081.  Organic diluents may be employed.  In examples, the following lactones are heated with concentrated hydrochloric acid in acetic acid, or with boron trifluoride etherate or aluminium chloride in acetic acid: (1) that in which R1, R2 and R3 are all methyl; (2) R1 and R2 are each propyl, R3 methyl; (3) R1 and R2 each hendecyl and R3 methyl; (4) R1 and R2 each ethyl and R3 methyl; (5) R1 and R2 each phenyl, and R3 methyl; (6) R1, R2 and R3 are each phenyl.  A list of alkyl groups is given and further aryl and aralkyl groups specified are methylphenyl, nitrophenyl, chlorophenyl, dimethylphenyl, ethylphenyl, nitromethylphenyl, benzyl, phenylethyl and phenylpropyl.  Other catalysts specified are sulphuric acid, phosphoric acid, aluminium bromide, various mixed aluminium bromides and chlorides, oxybromides and oxychlorides, titanium chloride and its complexes with aluminium halides and complexes of aluminium halides with carbon disulphide, isopropyl alcohol, and isoprene.
Patent GB-791371-A (GB)
Title: Improvements in or relating to disc wheels
IPC: B60B9/16
Filed: 1956-05-11
Abstract: 791,371. Spring wheels. KLOCKNERGEORGSMARIENWERKE AKT.-GES. May 11, 1956 [Dec. 19, 1955], No. 14793/56. Class 144 (1). In a spring railway wheel of the type comprising a disc body and wheel rim having mating V-sections between the opposing surfaces of which are interposed rubber-like rings 4, 41, the disc body comprises two similar angled apertured discs 2, 3 which are connected together back to back by welded dowel pins 7 and are connected to the wheel hub 1 by welded seams 1a, 1b, and the rings 4, 4<SP>1</SP> are of an elastic mouldable synthetic plastic such as polyurethane. As shown the rim 5 comprises a V- section ring on which a tyre 8 is shrunk and which has three radially inwardly directed angularly spaced lugs 6. The lugs 6 have holes 6<SP>1</SP> therethrough to align with holes 2a, 2b through the discs 2, 3 and the associated rings 4, 4<SP>1</SP> whereby the rim 5 and the wheel body may be rigidly bolted together for final machining of the tyre. If the rim 5 is of two-part construction, the rings 4, 4<SP>1</SP> may each be moulded simultaneously to its associated rim part and body disc. If the rim is of one-piece construction, both rings 4, 4<SP>1</SP> are moulded thereto, and then bonded or cemented to the associated discs 2, 3, the subsequent dowelling together of the discs effecting the desired pro-compression of the rings 4, 4<SP>1</SP>. Electrical connection between the rim 5 and the wheel body 2, 3 is effected by a cable 9.
Patent GB-530972-A (GB)
Title: Improvements in and relating to corrosion-resisting layers on articles of aluminium and aluminium alloys
IPC: C23C22/83
Filed: 1939-05-18
Abstract: 530,972. Treating metallic surfaces to produce a modified surface. SCHENK, M., May, 18, 1939, No. 14862. Convention date, May 20, 1938. [Glass 82 (ii)] [Also in Group XXXVI] Corrosion-resisting layers are produced on articles of Al or A1 alloys by forming, chemically or electrolytically, layers consisting at least in part of oxide or hydroxide of Al, and treating said layers with a hot aqueous solution of a neutrally reacting inorganic alkali salt the concentration of which corresponds to at least the saturation concentration at 20‹ C. while its solution in water at this concentration has a pH value between 6.5 and 8.2. The solution may comprise 12 parts by weight of potassium sulphate at 90‹C. Sulphates, thiosulphates, chlorates, perchlorates, phosphates, bromates and selenates may be used. A capillarily active substance, such as propyl or amyl alcohol fatty acids, or their compounds, aromatic sulphonic acids, sulphonated alcohols or sulphonated fatty acids, may be added to reduce the surface tension of the solution. The Specification as open to inspection under Sect. 91 states also that when capillarily active substances are employed, the concentration of the salt solution may be diminished, or reduced to zero ; thus a 2 per cent. solution of the substances known as Invadine B or Jgepon T in distilled water may be used without any addition of salt. This subject-matter does not appear in the Specification as accepted.
Patent GB-848141-A (GB)
Title: Dynamo-electric machine
Inventor: JARRETT BOAZ ANTONY
IPC: H02K13/00
Filed: 1958-05-09
Abstract: 848,141. Mounting commutators and rotors of dynamo-electric machines. C.A.V. Ltd. April 27, 1959 [May 9, 1958], No. 14870/58. Class 35. A dynamo-electric machine has a commutator 3 which includes an inner bush 4 secured to, and extending at one end 4a beyond, the rotor spindle 5, the one end 4a being supported within an anti-friction bearing 6 in the stator housing 7 and being internally splined to receive a shaft 8 coaxial with the rotor axis. The invention is applicable to a motor driving, e.g. a rotary shaft of a pump, or to a generator, and cylindrical splines may directly engage complementary splines on the shaft 8, or, as shown, those on a sleeve 9 having a conical bore complementary to a conical end of the shaft 8.
Patent GB-215604-A (GB)
Title: Improvements in adjustable chairs
IPC: A47C1/026
Filed: 1923-06-06
Abstract: 215,604. Brandt, F. E. June 6, 1923. Seat adjustments. - A chair is provided with means for locking the back in various adjusted positions and for allowing it to be moved into a horizontal position. The back-frame A is fitted with bars B pivoted at C to the seat, as described in Specification 178,712, and is connected to the uprights E by springs D. The rear end of each spring is connected to a hook H engaging angled slots J in the bar B so as to admit of ready detachment. The back is locked in its adjusted position by the engagement of a fixed tooth M with a rack K which is pivoted to the back and constrained by a spring U. The rack is raised to free the back by means of a lever R acting on a crank 0 embracing the rack and fitted with a roller P. A spring T returns the lever R to its operative position.
Patent GB-1115125-A (GB)
Title: Improvements relating to electrical battery charging circuits
IPC: H02J7/32
Filed: 1966-04-05
Abstract: 1,115,125. Thyristor firing circuits. NOVI P.B. 5 April, 1966 [6 April, 1965], No. 14995/66. Heading H3T. [Also in Division G3] The charging current of a battery B supplied from a permanent magnet alternator A and rectifier bridge D 1 , D 2 , D 3 , Th 1 , Th 2 , Th 3  is controlled by a relaxation oscillator which varies the firing angle of the controlled semi-conductor rectifiers Th 1 , Th 2 , Th 3  according to the value of the battery voltage. The oscillator consists of a uni-junction transistor Tr 1  and a timing circuit C, R 3  and controls an amplifying transistor Tr 2  which supplies firing pulses to the rectifiers Th 1 , Th 2 , Th 3  via a transformer T. The transistor Tr 1  is subjected to the fluctuating voltage difference between the alternator output (via diodes d 1 , d 2 , d 3 ) and the voltage of the battery B and is thus switched on at varying instants in each half-cycle determined by the battery voltage, the rectifiers Th 1 , Th 2 ,Th 3  being fired at corresponding instants. When transistor Tr 2  conducts the capacitor C is charged through both transistors until they switch off, after which it discharges through the resistors R 3 , R 4  to allow the transistor Tr 1  to be switched on again after a predetermined time dependent on the time constant of the discharge circuit. The transformer T may be replaced by three capacitors connected between the resistor R 5  and respective control electrodes of the rectifiers Th 1 , Th 2 , Th 3 , a decoupling resistor being connected between the control electrode and cathode of each rectifier, Fig. 2 (not shown). The uni-junction transistor Tr 1  may be replaced by a tunnel diode or a Shockley diode or the oscillator may comprise a two-transistor multivibrator or any arrangement of semi-conductors and resistance - capacitance timing circuit capable of generating short pulses.
Patent GB-259271-A (GB)
Title: A method of causing partial or temporary blindness, and apparatus therefor
IPC: F41H11/00
Filed: 1925-06-09
Abstract: 259,271. Power, R. F. June 9, 1925. S e a r c h lights; lantern Shutters and screens; lighting, systems of. - A longrange high-power lamp for producing temporary blindness or a blinding light, particularly in warfare, is provided with means for successively projecting differentcoloured light beams and with an occulting-device for producing an intermittent projection. The duration of each flash and of each period of occultation may be gradually lengthened to correspond with the slower opening and closing of the pupil of the eye, e.g. from two seconds to four seconds in the case of the flash and from three seconds to five seconds in the case of the occultation. The lamps may be arranged at different points and adapted to be controlled so that light, in some cases of different colours, may be projected successively from different directions on an object, thereby increasing the blinding effect. Mercury vapour lamps may be used alternately with neon lamps for obtaining different-coloured beams. In one form, a projecting lamp is provided with a rotatable cylindrical frame 14, Fig. 1, carrying three glass screens 15, 16, 17, e.g. green, red, and clear, mounted on rollers and rotated by a hand wheel through toothed gearing. The light may be shut off by a Venetian-blind type of shutter 10. In a modification, the rotatable frame is provided with two coloured screens and a connecting opaque portion and the lamp reflector is arranged within the drum and supported from the side of the lamp casing. In a second form, the lamp is provided with an iris diaphragm 30. Fig. 3, dispersion lenses 31, 32 operated by a hand-wheel 33, pivoted shutters 10 operated by a bell-crank lever 11, and coloured pivoted screens, e.g. red screens 25 and green screens 26, operated through handles 27, 28 and a connecting-rod. The lamps may be swung in a vertical plane. Specification 162,666 is referred to.
Patent GB-976313-A (GB)
IPC: C08F136/06
Filed: 1963-04-17
Abstract: Polybutadiene is made by polymerizing butadiene in the presence of a hydrocarbon diluent and an organometallic catalyst system containing iodine in the free or combined state and terminating the reaction by addition of a material selected from oxirane compounds and organic anhydrides. The Specification contains an extensive list of catalysts of the Ziegler-type.  The exemplified catalyst is formed from triisobutylaluminium, iodine and titanium tetrachloride.  The oxirane compound may be ethylene oxide, propylene oxide, glycidaldehyde, epoxidized polybutadiene, epoxidized fatty acid or fatty esters e.g. vegetable oils. Specified anhydrides are acetic stearic, succinic, benzoic, phthalic, pyromellitic, and polymerization products of styrene and maleic anhydride.  After the oxirane or anhydride short-stopping agent has been added, the polymer is recovered by conventional techniques such as alcohol coagulation, or steam stripping.  The polybutadiene, mainly cis, can be vulcanized by known methods.
Patent GB-1185412-A (GB)
Title: Improvements in or relating to Tackifier Compositions for Elastomeric Olefin Polymers and process for making the same
IPC: C08L23/16
Filed: 1968-03-28
Abstract: 1,185,412. Rosin-based resin tackifying compositions; olefin copolymer rubber compositions. HERCULES Inc. 28 March, 1968 [5 April, 1967], No. 15075/68. Headings C3P and C3R. A tackifier composition comprises, by weight, (I) from 80 to 20% of the reaction product of acid number less than 5 of (a) a partial ester of (i) ethylene glycol, glycerol or pentaerythritol and (ii) a material of bromine number below 50 which is hydrogenated resin or the hydrogenated reaction product of rosin and dimethoxymethane with (b) diazomethane, acetone dimethyl acetal or an alkylene oxide which reacts at unesterified carboxyl groups of the ester and (II) from 80 to 20% of a reaction product, having an acid number less than 5, of (x) a disproportionated rosin or hydrogenation rosin having a bromine number less than 50 with (y) diazomethane, acetone dimethyl acetal, or an alkylene oxide. A tackifying amount of the above composition or corresponding amounts of the individual components I and II thereof may be added to an elastomeric polymer comprising (1) copolymers of ethylene and α- monoolefins or (2) unsaturated sulphur-vulcanizable interpolymers of ethylene, at least one α-mono-olefin, and at least one non-conjugated hydrocarbon diene, or (3) mixtures of (1) and (2). Specified non-conjugated hydrocarbon dienes include C 6-22  aliphatic dienes of the formula CH 2 =CH-R 1 -CR 2 =CR 3 R 4  where R 1  is alkylene, R 2  and R 3  are hydrogen or alkyl and R 4  is alkyl; 5-alkylidene-2-norbornenes; 5-alkenyl- 2-norbornenes of the formula where X is hydrogen, or an alkyl radical of 1 to 6 carbon atoms and Z is an alkenyl radical; 2- alkyl-2,5-norbornadienes of the formula where R is an alkyl radical containing up to 8 carbon atoms; and methyl tetrahydroindene. Various conventional optional ingredients of the rubber compositions are specified.
Patent GB-809863-A (GB)
Title: Improvements in or relating to variable-speed transmissions
IPC: F16H3/66
Filed: 1956-05-15
Abstract: 809,863. Driving auxiliary apparatus. BORG-WAJRNER CORPORATION. May 15, 1956 [May 16, 1955], No. 15078/56. Class 79(2) [Also in Group XXIV] In a change-speed gear (see Group XXIV) for a heavy motor vehicle, which provides three reduced ratios, direct-drive and reverse by a series arrangement of a four-element planetary train 15 and a three element one 20, which ratios may, if desired, be doubled by the addition of an auxiliary two-speed planetary output gear, the planet-carrier 59 of the second train 20 has a power take-off wheel 61. This is idle in neutral and reverse and is driven by the engine (through a fluid coupling or torque converter 14) at the first reduction ratio of the first train in first ratio; at the second reduction ratio of the first train in second ratio, and at engine speed in third and fourth ratios. In each case drive is through the torque converter 14 although in a modification, Fig. 4 (not shown), the third ratio is all mechanical, by-passing the converter, and is hydromechanically torque split in fourth.
Patent GB-475746-A (GB)
Title: Improvements in or relating to hand propelled vehicles, bodies and other articles intended for hand propulsion
IPC: B62B1/08
Filed: 1936-05-28
Abstract: 475,746. Tractors. WILKINSON, G. A. May 28, 1936, No. 15144. [Class 79 (i)] [Also in Groups XXXII and XXX] In a lifting and propulsion unit for beds, &c., a petrol engine 36 is mounted on the castor member 28, 32, the engine driving the axle through chain and sprocket gear 28. Specification 415,837, [Group XXXII], is referred to.
Patent GB-291606-A (GB)
Title: Improvements in reflectors for radiant energy
IPC: A61N5/08
Filed: 1927-06-07
Abstract: 291,606. Sun Electrical Co., Ltd., and Rawlings, R. J. June 7, 1927. Light, treating diseases with.-A light radiator 2 for therapeutic or other purposes and comprising one or more arc or other lamps. 3 surrounded by a pyramidal reflector 2<c> is provided with one or two reflectors 5, 6 pivoted to the main reflector by links 8 and enclosing subsidiary radiators 7 which may be heat radiators. The reflectors 5, 6 may be swung in front of the reflector 2<c> in order to intercept wholly or in part the radiation from the lamp or lamps 3 or may be swung aside when the subsidiary radiation is not required. The device is mounted on a mobile telescopic stand! provided with switching and regulating devices-
Patent GB-625219-A (GB)
Title: Improvements in or relating to electromagnetic interrupters
IPC: H01H51/34
Filed: 1947-06-10
Abstract: 625,219. Converting. PLESSEY CO., Ltd. June 10, 1947, No. 15215. Convention date, June 11, 1946. [Class 38 (ii)] [Also in Group XXXVII] In an arrangement wherein current from a D.C. source 43 is transformed to A.C. and then rectified, a polarized core 17 is driven one way or the other according to the direction of current in the winding 13, 14. Current from the battery 43 passes through a strip 38 and thence to the core, contacts 25, 34, coil 13, 14 and half of transformer winding 50, causing the core to move, breaking contacts 25, 34 and making contacts 31, 37 which connects the coil in circuit the reverse way and returns the core to its original position. Contacts 24, 33 and 30, 36 are rectifying contacts for the secondary of the transformer.
Patent GB-101977-A (GB)
IPC: A47K10/32
Filed: 1916-10-26
Abstract: 101,977. Wisshaar, R. Oct. 26, 1915, [Convention date]. Roll holders and cases.-A roll 2, Fig. 2, of toilet paper normally rests upon partly-immersed moistening-rollers 4, 4' arranged to be turned automatically as the paper is drawn through the delivery slit 1<1> of the holder 1. A lever 7 may be provided so that the roll 2 can be raised clear of both rollers 4, 4' or can be raised slightly so that it rests on the roller 4<1> only. In a modification, the holder is provided with a single moistening- roller 6, Fig. 5, which may have part of its periphery cut away, so that moistened and unmoistened portions of paper are delivered alternately. The lever 7 may be connected to a pointer moving over an indicating-plate.
Patent GB-475908-A (GB)
Title: Improvements in or relating to fluid stream measuring devices
IPC: G01P5/02
Filed: 1936-05-29
Abstract: 475,908. Flow meters. ASKANIAWERKE AKT.-GES. VORM. CENTRALWERKSTATT DESSAU UND C. BAMBERGFRIEDENAU. May 29, 1936, No. 15264. Convention date, May 29, 1935. [Class 69 (i)] An apparatus for recording liquid flow has optical means for transmitting indications of the movements of means responsive to fluid flow, into the interior of a liquid-tight chamber containing the recorder. The apparatus shown has diaphragms 6, 7, 8 of different thicknesses in order to be operative for different velocity ranges, with supports 9 behind the diaphragms. A chamber 2<1> is filled with liquid subject to the static pressure through a diaphragm 2<11>. The diaphragms are connected to pivoted mirrors 6<1>, 71, 8<1>, so that movement of a diaphragm and mirror deflects the course of a light beam on to a photographic recorder 15 in the liquid-tight chamber 1. Indications from a level 18, compass 16, and a clock 17 may also be photographically recorded, and all exposures may be made intermittently by automatic means. The Specification as open to inspection under Sect. 91 comprises the arrangement shown in Fig. 1 (Cancelled), and a perforated concave disc for supporting a fully deflected diaphragm. This subject-matter does not appear in the Specification as accepted.
Patent GB-689642-A (GB)
Title: Improvements relating to the manufacture of phosphoric acid
IPC: C01B25/22
Filed: 1950-06-19
Abstract: In the production of phosphoric acid by digesting crude phosphate with sulphuric acid and precipitating calcium sulphate as anhydrite the phosphate is mixed with an amount of phosphoric acid circulating in the process and containing at least 40 per cent, say 45 per cent by weight P2O5, the ratio between the amount of P2O5 circulating during unit time and the amount subsequently formed during unit time being at least 2:1, say 3:1, and the resulting mixture is then introduced into sulphuric acid, or a sulphuric-phosphoric acid mixture, the temperature of the reaction mixture being maintained at at least 80 DEG C, say 100 DEG C.  The initial mixing may be effected at a lower temperature, the phosphoric acid being used cold.  Heat for the second stage is supplied by pre-heating the sulphuric acid to 120 DEG C, or the reaction mixture.  Precipitation may be effected in say three vessels, the phosphoric acid-phosphate mixture being added to the sulphuric acid passing through the vessels.  Part of the slurry from the last vessel may be passed to the first.  In an alternative procedure, half of the crude phosphate may be treated with the circulating acid, the balance being added after mixing with sulphuric acid.  The anhydrite-phosphoric acid slurry is filtered through a cloth of nitrated cotton, silk, nylon or metal.
Patent GB-677133-A (GB)
Title: Improvements in and relating to bandages
Inventor: BURLEY DONALD WESTON
IPC: A61F13/04
Filed: 1949-06-08
Abstract: 677,133. Setting bandages. SMITH & NEPHEW, Ltd., T. J. June 8, 1950 [June 8, 1949], No. 15298/49. Class 81 (ii). A setting bandage comprising artificial resin yarns for treatment with a suitable solvent, is impregnated with a solution of a material which retards the action of the solvent. Suitable yarns which may be used are of cellulose acetate, polystyrene, vinyl resin, and these may be mixed with inert fibres such as of glass, nylon, cotton, protein or vinylidene chloride. The retarding substance may be sodium alginate, methyl cellulose, sodium carboxy-methyl cellulose, polyvinyl alcohol, starches and gums, and may be applied in a dilute aqueous solution so that when the water is evaporated a thin film is left over the soluble yarn.