baber/WOPTO huggingface dataset:
Patent GB-996066-A (GB)
Title: A circuit arrangement for producing control pulses for the operation of converters
IPC: H02M7/15
Filed: 1961-09-13
Abstract: 996,066. Converting. LICENTIA PATENT-VERWALTUNGS - G.m.b.H. Sept. 13, 1961 [Sept. 19, 1960], No. 32834/61. Heading H2F. [Also in Division H3] In a circuit for deriving pulses from a sine wave, the sine wave is converted into a rectangular current waveform which is used to feed a parallel circuit having three branches consisting respectively of a capacitor 1 (Fig. 3), a diode 8 and a phase-adjusting component such as resistor 10. Generating rectangular and sawtooth waveforms from a polyphase sine wave.-Fig. 2a shows rectifiers 2a, 2b, 3c, an inductor 5 and an optional electronic constant current device 6 connected to the secondary of a three-phase transformer 7. When transformer 7 is supplied from three phase mains a rectangular current wave will be passed through capacitor 1, the amplitude being independent of the mains voltage. Fig. 1a (not shown), relates to a single-phase version of Fig. 2a. Generating phase-adjustable pulses.-The capacitor 1 of Fig. 2a is connected as shown in Fig. 3 so that since part of the rectangular current waveform i 1  flows through the variable resistor 10, the voltage across capacitor 1 rises exponentially during positive half-cycles of current and falls exponentially during negative half-cycles until the voltage reverses, when diode 8 conducts, discharging capacitor 1. The timing of the current pulse through diode 8 is adjustable by variable resistor 10. The current pulse is differentiated by transformer 9 and used to control a gaseous or semi-conductor rectifier. In Fig. 4, the variable resistor 10 is replaced by a diode 11 having an adjustable reverse bias 12. It is shown that on positive half-cycles of the rectangular current wave i 1 , capacitor 1 charges linearly until diode 12 becomes conductive, then discharges linearly during negative half-cycles until diode 8 becomes conductive when a current pulse is passed through a differentiating transformer 9. Pulse generators with antiphased outputs.- Fig. 5 (not shown), relates to two pulse generators connected in series opposition and supplied with a common rectangular current wave. In Fig. 7, the diodes 8 are replaced by junction transistors 8.1<SP>1</SP>, 8.2<SP>1</SP>, diodes 11.1, 11.2 are reversed biased from an adjustable voltage Ust, coupled via a Zener diode 21 and an emitter follower 13. Differentiated anti-phased outputs are available from transformers 9.1, 1, 9.2 for feeding controlled rectifiers. Protective diodes 18.1, 18.2 are included. Fig. 8 (not shown), relates to a similar arrangement using a single capacitor. Specification 909,847 is referred to.
Patent GB-1459770-A (GB)
Title: Transport container for radio-active material
IPC: G21F5/08
Filed: 1973-07-10
Abstract: 1459770 Shielded containers UNITED KINGDOM ATOMIC ENERGY AUTHORITY 19 Aug 1974 [10 July 1973] 32868/73 Heading B4Q An energy absorber for fitting to the end of a flask for transporting irradiated fuel elements comprises a plurality (e.g. 32) of L-shaped fins 1, each fin 1 having a foot portion 2 and a leg portion 3. The foot portions 2 are arranged to extend axially about the end of the flask (not shown) while the leg portions 3 are arranged to extend radially inwardly over a portion of the end face of the flask. Every fourth fin 1 has a triangular portion 4 extending radially inwards. Each foot portion 2 is secured as by welding to inner and outer stiffener rings 6 and 7, respectively, the inner ring 6 being a sliding fit about the end of the flask. An annular plate 8 is secured as by welding to the inner edges of the leg portions 3 and is provided with angularly spaced apart apertures 9 which are arranged to coincide with threaded bores in the end face of the flask. Another annular plate 10 is secured as by welding to the outer edges of the leg portions 3. The energy absorber can be manufactured from aluminium and can protect the flask from the most severe end-on impacts which could be encountered in any accident during transport of the flask. The fins absorb energy by deformation on impact.
Patent GB-1522012-A (GB)
Title: Gasoline composition
IPC: C10L1/24
Filed: 1975-08-06
Abstract: 1522012 Gasoline composition SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 6 Aug 1975 [8 Aug 1974] 32879/75 Heading C5G A gasoline composition comprises gasoline and from 0.5 to 100 parts by weight of one or more driveability-enhancing polymers of one or more fluorine-containing monomers selected from esters, amides and imides per million parts of gasoline, whereby the or each polymer possesses (1) a critical surface tension of less than 17 dynes/cm. at 25‹C, (2) a high contact angle of at least 40 degrees to toluene at 22‹C, (3) a minimum solubility in gasoline of at least 5 parts by weight per million and (4) a fluorine content in the range of from 20 to 65% by weight. The polymer may be a homopolymer of an ester of a fluorine-containing alcohol and a monoethylenically unsaturated lower monocarboxylic acid containing up to 5 carbon atoms or the corresponding thio acid, a copolymer of the fluorine-containing ester and a monoethylenically unsaturated non-fluorinated monomer selected from acrylic acid, acrylic acid esters, acrylamides, methacrylic acid, methacrylic acid esters, methacrylamides, alpha olefins and other vinyl compounds, perfluoroamide-aziridine polymer or perfluoroalkanoyl-substituted poly- (ethylenemine). The polymer may be dissolved in an oxygen-containing solvent, e.g. acetone, ethyl acetate, 2-butanone and methyl isobutyl ketone or a halogen-containing solvent, e.g. 1,3-di(trifluoromethyl)benzene; 1,1,1,-trichloroethane, prior to addition to gasoline. Other additives which may be present in the gasoline are antiknock agents, corrosion or rust inhibitors, antioxidants, solvent oils, metal deactivators, anti-icing agents and dyes. In examples, the presence of poly(1H, 1H-pentadecafluorooctyl methacrylate), of a mixture of (i) a copolymer of styrene and butylmethacrylate and (ii) a perfluoroisopropyl perfluoroalkyl mercaptoalcohol amide derivative of a polyethylene imine, of a poly(lH, 1H, 2H, 2H, pentadecafluorononyl methacrylate), of a copolymer of perfluorooctane sulphonamido-ethyl methacrylate and lauryl methacrylate and of a poly(perfluorooctane-sulphonamidoethyl acrylate) in gasoline are referred to.
Patent GB-636311-A (GB)
Title: Improvements in baggage racks for vehicle roofs
IPC: B60R9/045
Filed: 1946-12-19
Abstract: 636,311. Vehicle luggage racks. RIVIERE, A. Dec. 19, 1946, No. 32918/48. Convention date, Dec. 27, 1945. Divided out of 636,257. [Class 103 (ii)] An extensible baggage rack for the roof of a motor car or like vehicle is housed, when folded, within a rigid casing provided at one end of the vehicle roof and comprises a mattress 19, 21 which is provided with a pivoted end-rail 25, and, when extended, is slidably engaged between channel-section side-members 20, each connected at one end by double hinges 23 to a fixed member 29 within a casing 26 and secured at the opposite end to the vehicle roof by a clamp 28, each side member being provided with a rigid rail 24. When the mattress 19, 21 is collapsed within the casing 26, members 20, 24 are also swung inside the casing which is then closed by flap 27.
Patent GB-1433826-A (GB)
Title: Forming items having a plurality of circumferentially spaced surfaces
IPC: B21J5/00
Filed: 1973-07-10
Abstract: 1433826 Making fasteners; rolling LAMSON & SESSIONS CO 10 July 1973 [2 Aug 1972] 32943/73 Headings B3A and B3M [Also in Division F2] Circumferentially spaced surfaces are formed on a workpiece, e.g. a self staking fastener, by rolling the workpiece in contact with a tool having corresponding circumferentially spaced arcuate segments. In an example, a self-staking insert 10, Fig. 1, which punches its own hole in a sheet to which it is attached, is formed with surfaces 24 around its head portion 14 by an embossing roll 46, Fig. 3. The head is initially shaped from hollow bar stock 30 to have a frustoconical surface 78, and is spaced from a groove 64 cut with a tool 120. The roll 46 is moved radially towards the head during rotation of the stock by a chuck 28. A toothed wheel 48 coupled to the roll engages the base of the groove to cause rotation of the wheel and roll. The roll surface, Fig. 8, has arcuate portions 52 which form the surfaces 24 on the insert. The portions 52 may be shaped to produce flat, concave, or convex surfaces 24. After the shaping step, a cutter 116 chamfers the edge of the head 14, and the tool 120 partsoff the insert from the stock. The insert is then reamed and optionally provided with an internal thread.
Patent GB-1514949-A (GB)
Title: Method of fabricating stepped electrodes
IPC: H01L21/28
Filed: 1975-08-07
Abstract: 1514949 Semi-conductor devices WESTERN ELECTRIC CO Inc 7 Aug 1975 [12 Aug 1974] 32969/75 Heading H1K A method of fabricating electrode structures, characterized by stepped electrodes, comprises successive stages of coating and etching layers of insulating and conducting material deposited on a substrate. In one structure achieved by this method, a substrate 22, which may be a semi-conductor, supports stepped electrodes 24A, 24B, 24C separated from the substrate surface and from further stepped electrodes 26A, 26B, 26C by an insulating material 232. An impurity zone 80, suitable as a drain region in a device, may be formed in the substrate. The substrate 22 may be doped Si, the insulating layer may be SiO 2 , and the electrodes may be doped polysilicon, A1 or Au. Buffered HF is used as the etchant for the insulating layers, and a dichromate etch is used for the conducting layers. The method is applicable to the fabrication of charge coupled devices.
Patent GB-484223-A (GB)
Title: Improvements in or relating to condenser lens systems
IPC: G03B21/20
Filed: 1936-12-01
Abstract: 484,223. Optical systems. DEHN, F. B. (Zeiss Ikon Akt.-Ges.) Dec. 1, 1936, No. 32993. [Class 97 (i)] A condenser lens system comprises two members 1, 2 of which the member 2 which, in use, is remote from the light source 3, has a concave surface which is turned away from the said source. The surfaces of the members 1, 2 which face each other are strongly convergent and one, or each, of these surfaces is deformed. When the condenser is used in a kinematograph projection apparatus, the concave surface of the member 2 faces the picture window a<1>.
Patent GB-998415-A (GB)
Title: Semiconductor devices having epitaxial films and methods of making them
IPC: H01L21/205
Filed: 1961-09-14
Abstract: 998,415. Semi-conductor devices. WESTERN ELECTRIC COMPANY Inc. Sept. 14, 1961 [Sept. 20, 1960], No. 33047/61. Heading H1K. In a semi-conductor device the net impurity concentration on at least one side of a PN junction formed within a layer epitaxially deposited on a semi-conductor substrate decreases with increasing distance from the junction. A voltage variable capacitance diode of this type is made from a wafer of silicon, 0À013 inch thick along the 110 crystallographic axis, containing a uniform N-type doping of 10<SP>20</SP> atoms/c.c. of arsenic by the following steps. One face of the wafer is first exposed for 1 hour at 1250 C. to a gaseous mixture of silicon dioxide with 0À01- 0À001% by volume of boron trioxide to produce an N-type surface layer with a surface concentration of 10<SP>18</SP> atoms/c.c. of boron. After grinding the treated surface flat, etching in a hydrofluoric-nitric acid mixture, and washing first in dilute hydrochloric acid and then in water, the wafer is heated for 30 minutes at 1200 C. in pure dry hydrogen. It is then maintained at 1200 C. in a gas consisting of silicon tetrachloride and hydrogen in the volume ratio 0À02: 1, flowing at a rate of 1 litre/minute for 1 minute to produce an epitaxial layer 0À00025 cm. thick over the boron doped layer. Other thicknesses may be produced by deposition over a period ranging from minutes to hours at temperatures of 850-1400 C. During deposition or in a subsequent heating step the arsenic diffuses into the epitaxial layer and the boron more deeply to produce a PN junction in the layer on the remote side of which the uncompensated boron concentration decreases rapidly with distance. After provision of an ohmic contact over the back face of the wafer and a series of spaced alloyed aluminium ohmic contacts on the epitaxial layer unwanted parts of the layer are removed and the wafer subdivided into mesa diodes. In these diodes as a result of the heavy doping of the wafer the space charge expands mainly into the retrogradely doped P- type layer to give a capacity roughly inversely proportional to voltage. The method may also be performed using an arsenic or antimony doped silicon wafer with indium or boron as diffusing impurity, using gallium or indium doped P-type germanium with phosphorous or arsenic as diffusing impurity, or using a silicon doped N-type gallium arsenide wafer with zinc or cadmium as diffusing impurity. In all cases the epitaxially deposited layer may be a different semi-conductor from the wafer, e.g. germanium, deposited from its chloride or iodide on silicon. Specifications 692,250 and 972,511 are referred to.
Patent GB-1065657-A (GB)
Title: Alkenyloxy pyridones and their manufacture
IPC: C07D213/89
Filed: 1964-08-13
Abstract: The invention comprises the compounds of formula <FORM:1065657/C2/1> where R1 is C3- 8 and R2 is hydrogen or methyl, and acid addition salts thereof; and their production by reacting <FORM:1065657/C2/2> where R3 is C1- 3 alkyl, with at least one mole of R1X (where X is Cl, Br or I) per mole of pyridine oxide at 25-125 DEG  C. for 1-10 hours. Solvents may be used.  The compounds of the invention are useful for the treatment of topical fungal infections in mammals and other animals caused by fungi such as Trichophyton rubrum, and for eradicating such fungi from inanimate objects.  The compounds also have sedative and muscle relaxant effects, and they inhibit the growth of Pseudomonas fluorescens.
Patent GB-668291-A (GB)
Title: Improvements in or relating to packaging or like containers
IPC: B65D45/34
Filed: 1948-12-22
Abstract: 668,291. Heads for drums. FARRER, J. O. (Continental Can Co., Inc.). Dec. 22, 1948, No. 33089/48. Classes 21, 66 and 125(iii) The head 21 of a drum or like container 20, seats on the extreme end edge 38 of the drum and against an inwardly directed rib 27 and is secured in position by a split clamping ring 23. The drum may be of wound convolutions of heavy paper and the end may be reinforced by a metal band 22. The head contacts the drum only on the above-mentioned seatings. The clamping ring 23 may be as described in Specification 657,159.
Patent GB-1313007-A (GB)
Title: Knitting machines
IPC: D04B15/88
Filed: 1970-07-08
Abstract: 1313007 Knitting-machines H H KRENZLER 8 July 1970 [16 July 1969] 33194/70 Heading D1C A circular machine includes a cloth take-up and fabric draw-off beam 21, driven by an independent motor 22 which is regulated to increase its tractive force as the windings increase, by means of an arm 25 sensing diameter of the roll on the beam.
Patent GB-1439611-A (GB)
Title: Sizes and adhesives
IPC: D06M13/152
Filed: 1972-07-15
Abstract: 1439611 Sizes/adhesives for polyester fibres ALLIED COLLOIDS Ltd 16 July 1973 [15 July 1972] 33229/72 Heading C3P [Also in Division D1] A size or adhesive composition particularly useful for application to polyester fibres comprises a conventional vinyl polymer-containing sizing material for fibres, films or filaments and, as adhesion promoter (diffusion promoter), pphenylphenol. The vinyl polymer component may be a copolymer of (a) 5-20 mole per cent acrylic or methacrylic acid and 80-95 mole per cent of an acrylic or methacrylic ester of a C 1 -C 18  aliphatic alcohol or (b) 10-20 mole per cent of an ethylenically unsaturated carboxylic acid and 80-90 mole per cent vinyl acetate or styrene. The composition is suitably aqueous and may further comprise auxiliary lubricating, softening and antistatic agents.
Patent GB-474552-A (GB)
Title: Improvements in or relating to gas case-hardening furnaces
IPC: C23C8/06
Filed: 1936-12-03
Abstract: 474,552. Dynamo-electric machines. RENAULT, L. Dec. 3, 1936, No. 33238. Convention date, Oct. 31. Addition to 470,043, [Group XII]. [Class 35] [Also in Groups XII and XXVI] In the case-hardening furnace described in the parent Specification the fan 3 for agitating the furnace atmosphere is driven by a squirrel cage motor, the rotor 17 of which is within, and the stator 19 without, a gas-tight casing 18 made of thin non-magnetic steel of high resistance.
Patent GB-199051-A (GB)
Title: Improvements in and relating to the concentration of ores and minerals
IPC: B03B7/00
Filed: 1921-12-10
Abstract: 199,051. Marks, E. C. R., (Eureka Metallurgical Co.). Dec. 10, 1921. Treating ores to facilitate concentration.-In a process of concentrating ores, such as oxides, by flotation, the ore is coated with oil in a thick pulp having a low surface-tension value, and is then propelled to the surface of a liquid having a high surface-tension value, and the scum so formed is finally discharged into a water tank at a lower elevation, the product which settles at the bottom being recovered after the water has been drained off. The ore is crushed in a crusher 10 and passes through a screen 11 into a pulverizer 12, and then through a drag classifier 13 into a cone classifier 14. From the latter the separated slimes pass into a thickener 15 whilst the sands pass into a second pulverizer 16. The sands and slimes are then treated substantially alike, but separately The sands are coated with oil, preferably petroleum sludge, which is supplied from a vessel 19 and is introduced into the thick pulp of low surface-tension value in the mixer 17 in which it is thoroughly agitated, or an excess of oil may be added. Further to reduce its surface-tension substances, such as sodium sulphide, lye, nitre cake, sodium carbonate, common salt, small quantities of tension modifying oils or a soluble soap, may he added to the pulp from the vessels 18, 20, and 21, or its temperature may be raised by means of steam entering at 37. The excess water and oil is then recovered from the mixture by the cone 22, and may be used again, the thick pulp being discharged into four to five times its volume of cold water contained in a flotation cell 23. This water is clean and unmodified and its surfacetension comparatively high. Upon a slight agitation by the paddles 21, with or without the use of compressed air from 25, a scum appears on the surface of the pulp in the cell 23. This scum is delivered into water in a tank 26, at a lower elevation than the discharge from the flotation cell, so that the material is carried beneath the surface of the water and settles at the bottom from which it is removed after decanting the water. The slimes undergo a similar treatment to the sands, but more oil, water, and chemicals are required. They pass from the thickener 15 to a mixer 17<1> in which they are mixed with oils and chemicals from 18', 19<1>, 20<1> and 21'. The oily chemicallycontaminated water is recovered bv means of a filter press 22<1> and may be used again. The oiled slimes then pass to a flotation cell 23<1> having paddles 24<1> and an air supply 25<1>, from which they are finally discharged into a bin 26<1>. The oiled waters from the cone 22 and the filter press 22<1> are conveyed by suitable pipes and valves to storage tanks 28 and 31 respectively, and from these are conveyed back to either of the mixers 17, 17<1> for re-use.
Patent GB-656392-A (GB)
Title: Improvements in or relating to the storage of a substance which deteriorates in the presence of water vapour and/or oxygen
IPC: A61J1/06
Filed: 1946-11-11
Abstract: 656,392. Packing under special atmospheric conditions. EDWARDS & CO. (LONDON), Ltd., W., and GREAVES, R. I. N. Nov. 11, 1946. No. 33393. [Class 94(i)] [Also in Group VI] Water vapour and oxygen are removed from the atmosphere within closed container of a substance which deteriorates in the presence of water-vapour or oxygen, ment, by means of a getter within the container. The getter 18, Figs. 2 and 3, e.g. calcium, barium, a calcium-barium alloy, may be placed within an ampoule in a part thereof remote e.g. a foodstuff, a serum, a surgical or scientific instrufrom the substance 10 tc be preserved, the ampoule evacuated and filled with an inert gas such as nitrogen or argon, the getter caused by eddy current high frequency heating tc form a deposit 18<SP>1</SP> on the wall of the ampoule, the ampoule again evacuated and finally sealed.
Patent GB-192247-A (GB)
Title: Improvements in electric switches
IPC: H01H9/10
Filed: 1921-12-13
Abstract: 192,247. MeColl, A. E., Garrard, C. C., and Railing, A. H. Dec. 13, 1921. Sparking-preventing and arcrupturing devices.-A switch A is combined with a fuse H in such a way that ':he fuse is normally cutout or short-circuited, but is inserted into the circuit and blows when the switch arm A is moved. for example by a selective protective device, from its closed position B to its open position D. In a modified construction, the switch arm A is retarded for about 1 sec. at the contact C so that the rupturing of the current is effected entirely by the fuse. Specifications 119,137 and 125,736 are referred to.
Patent GB-398155-A (GB)
Title: Improvements in and relating to ball or roller bearings
IPC: F16C27/04
Filed: 1931-12-03
Abstract: 398,155. Yielding-mounts for bearings. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Dec. 3, 1931, No. 33501. Convention date, Feb. 20. Void [Published under Sect. 91 of the Acts]. [Class 12 (i).] To prevent distortion of a ball or roller bearing 2 due to heat, the outer race ring is carried in a thin bush 3. As shown, the bush 3 is cylindrical in shape and is supported at its ends in a housing 4. In a modification, for a vertical shaft, the bush 3 is of U-shape.
Patent GB-1473001-A (GB)
Title: Printing machines
IPC: B41F13/44
Filed: 1974-07-30
Abstract: 1473001 Cylinder tripping SIMON-VK Ltd 8 July 1975 [30 July 1974] 33545/74 Heading B6C A flexographie printing machine comprises means to separate an inking roller 13, plate cylinder 11 and driven impression cylinder 10 for alignment thereof. Slidable frames 18, 20 carry the plate cylinder 11 and ink fountain rollers 13, 14 respectively and hydraulic cylinders 28, 30 urge frames 18, 20 towards cylinders 10, 11 respectively until adjustable stops 21, 23 respectively engage abutments 29, 31. The abutments 29, 31 are small hydraulic cylinders capable of being locked in two positions, one with gearing 15, 16, 17 fully meshed and the other unmeshed. Fine adjustment is achieved using handles 32, 33 which turn stops 21, 23 in threads 22, 24. Further hydraulic cylinders 34, 35 are provided to disengage the cylinders 10, 11 and roller 13 but keep the gearing 15, 16, 17 in engagement during temporary interruptions.
Patent GB-282110-A (GB)
Title: Side registering device of sheet feeding mechanism for folding or other machines
IPC: B65H9/10
Filed: 1927-12-13
Abstract: 282,110. Spiess, G. Dec. 13, 1920, [Convention date]. Addition to 278,007. Sheet-registering devices.-In the sheet-registering device described in the parent Specification in which the sheet is moved against a side guide 15 by the engagement of a spring-pressed roller 3 with a reciprocating bar 31, the axis 32, about which the lever 2, 33 carrying the roller 3 and guide 5 oscillates, is arranged in or approximately in the plane of the contact surface of the bar 31 so that there is no tendency for the engagement of the roller 3 and bar 31 to cause faulty registration by the front stops. The roller 3 and guide 15 are carried by plungers 36, 37 pressed downwardly by springs 38, 39, the tension of which may be adjusted by screws 40, 41. The side guide 15 and guide plate 13 are secured to an angle piece 42 pivoted at 43 to the end of the plunger 37, the piece 42 being held in any position of adjustment by means of a screw-and-slot connection 46, 47 with a horizontal extension 45 on the plunger 37.