baber/WOPTO huggingface dataset:
Patent GB-1324151-A (GB)
Title: Hydraulic booster
IPC: B60T13/14
Filed: 1971-11-26
Abstract: 1324151 Fluid pressure control of brakes BENDIX CORP 26 Nov 1971 [18 Dec 1970] 54916/71 Heading F2F In an hydraulic brake force booster, the normal return-pressure is rendered ineffective when the energizing pressure fails so that the output piston 22 may be moved directly with greater ease. When normal pressure is applied at inlet 12 a sliding, sealed ring 42 is held by this pressure, acting in space 38, against a circlip 56 on the piston, but on failure of this pressure, the spring 39 presses it against a barrier 58 in the cylinder wall. This action relieves the piston of the normal return pressure of the spring, so that the pressure exerted at 90 by the driver is more effective. When pressure at 12 fails, the position of the booster parts before actuation will be as shown, the thrust member 90 being held to the right by spring 102 so that valve member 88 is unseated from spherical valve member 92 so that there is a free passage between chambers 70 and 52 at either end of the piston 22. Meanwhile, valve member 72 is seated on element 74 thus cutting space 73 off from chamber 70. Operation of the operating element 90 compresses spring 102 and advances the piston 22 to the left, through the engagement of body portion 100 with seating element 74, to operate the brake master cylinder (not shown) through rod 32 in the usual way. A cheek-valve 110 allows fluid to pass from chamber 52 to the chamber 70 to equalize pressure. Hence, since the spring 39 does not react on the piston but is held by abutment 58 and there is no pressure difference, the piston moves freely. When pressure is restored, pressure in space 38 will slide the sealed ring 42 leftward against the ring 54 to restore return-spring pressure to the piston 22. Now, leftward actuation of member 90 causes valve member 88 to close against the sphere 92 to cut off chamber 52 from chamber 70. Further movement, unseats the sphere 92 from seating 74 to connect chamber 70 with inlet pressure via cavity 73. This pressure in chamber 70 forces the piston to the left in the usual way, but reaction pressure acting in chamber 77 and on the end of valve 72 serves to supply "feed-back" force to the operator.
Patent GB-1275498-A (GB)
Title: Semiconductor device
IPC: H01L29/73
Filed: 1970-11-19
Abstract: 1275498 Lateral transistors ITT INDUSTRIES Inc 19 Nov 1970 [25 Nov 1969] 54995/70 Heading H1K The junction-isolated lateral transistor shown may form part of an integrated circuit and comprises a base region 6 having a highly doped surface portion 1 which is between the emitter 2 and collector 3 and which may be in contact with both (as shown), with either one, or with neither. (In the embodiment there are two partial collector regions). An underlying high conductivity layer 9 is provided to give low base resistance, contact to the base region being established on the side of the collector remote from the emitter direct to layer 9 via a contacting zone (not shown).
Patent GB-1481242-A (GB)
Title: Method and apparatus for obtaining images of different colour intensities combinations and relationships
IPC: G03C7/00
Filed: 1974-12-19
Abstract: 1481242 Optical apparatus J M WEISS 19 Dec 1974 [27 Dec 1973 12 Nov 1974] 55009/74 Heading G2J and G2X In a method of producing a synthesized image of variable colour and intensity, e.g. for use in printing, process engraving, designing, weaving tapestry making and the cinema, at least two information images 2 are produced from a master image; the information images 2 are positioned stepwise successively in the same position, e.g. at gate 3, and are illuminated, when in the said same position, by flashes of coloured light selected from at least two primary colours and the resulting effects are combined e.g. on colour film, by projection or by direct viewing. In the embodiment of Fig. 1, a film 1 is transported stepwise through gate 3 by driven rollers 4. The film 1 bears separate information images 2a, b c, d previously produced from a master image by e.g. negative/positive printing; 3- or 4-colour selection or mask/counter mask techniques. The gate 3 is illuminated by flash lamps L1, L2, L3 through variable attenuators D1, D2, D3, primary colour filters FR, FB, FV and a combining prism system 5. The flash-lamps and the image transport are synchronized at 6 and data concerning the colours and intensities used for each information image may be recorded at 7. Instead of attenuator discs D1, D2, D3 electronic means may control the lamps directly, or a pair of relatively rotating polarizing filters may be used. In a modification Fig. 3 (not shown) a single flash-lamp is used in conjunction with a disc or drum carrying filters of different colours.
Patent GB-1201158-A (GB)
Title: Improvements in or relating to sine/cosine function generators
Inventor: ALEXANDER ALFRED JOHN
IPC: G06G7/22
Filed: 1966-12-09
Abstract: 1,201,158. Trigonometrical function generators. ELLIOTT BROS. (LONDON) Ltd. 4 Dec., 1967 [9 Dec., 1966], No. 55208/66. Heading G4G. In a function generator (Fig. 2) an input signal X representing the rate of change of a signal is applied over multipliers 13, 13<SP>1</SP> to the inputs of integrators 11, 11<SP>1</SP> whose outputs are respectively cross connected to the inputs of multipliers 13<SP>1</SP> and are also applied to squaring circuits 25, 25<SP>1</SP> whose outputs are added at 29 and compared with an amplitude central signal a<SP>2</SP>; the error being amplified at K and applied to multipliers 21, 21<SP>1</SP> together with the respective outputs of the integrators, and the products are fed to the integrator inputs. It is shown that the respective outputs represent u = z sin X, v = z cos X where Z is controlled to the amplitude value a. For control of the phase of the output signals, a trigonometrical function generator B as described with or without the amplitude feedback control system, may be supplied (Fig. 3) with the sum of signal X and the difference between a phase monitoring signal sin X m and the output sin X developed in difference circuit 35 and amplified at 39 with or without a null error correcting integrator 49 connected between amplifier input and output. In modifications the input to the difference circuit may be cos X (Fig. 5, not shown) a multiplier receiving the cos X (or sin X) output may be interposed between the difference circuit and the amplifier, (Figs. 5, 6, not shown), the currents of Figs. 4, 6 (not shown), may be combined (Fig. 7, not shown), or (Fig. 8, not shown) the input applied to the trigonometrical function generator may be derived from signal X summed with the output of an amplifier (with or without integrator) energized from a differencing circuit developing the error derived from the products of sin X and reference signal Xm and of cos X and reference signal sin X m.
Patent GB-1452317-A (GB)
Title: Method of making silver halide emulsions
IPC: C01G5/02
Filed: 1973-11-28
Abstract: 1452317 Making silver halide emulsions POLAROID CORP 28 Nov 1973 [4 Dec 1972] 55210/73 Heading G2C Photo-sensitive silver halide emulsions are made by (i) forming a solution of a water-soluble complex of silver halide e.g. with a water-soluble halide salt such as calcium bromide, lithium bromide or potassium bromide, (ii) causing at least partial breakup of the complex and crystallization of silver halide by diluting the solution with a dilution medium containing an agent for modulating the crystallization of the silver halide, such as an aqueous halide salt solution e.g. of KBr or KBr and KI, or an aqueous medium containing nucleating material e.g. gold sulphide or containing an organic solvent e.g. dimethyl formamide or dimethyl sulphoxide in addition to a halide salt, and (iii) separating the crystals and dispersing them in a binder e.g. gelatine. The complex solution is preferably saturated and at a higher temperature than the dilution medium. Chemical and spectral sensitizers may be added to the silver halide crystals before or after dispersion in the binder. Variation of the concentration and type of modulating agent in the dilution medium gives variation in the habit and size of silver halide crystals obtained which  may range in size from 0À1 to 20 microns in diameter. The emulsions obtained may be exposed and processed by diffusion transfer using a convential receiving sheet and processing composition.
Patent GB-1235259-A (GB)
Title: Planographic plates
IPC: B41N1/14
Filed: 1969-11-14
Abstract: 1,235,259. Printing plates. COLUMBIA RIBBON & CARBON MFG. CO. Inc. 14 Nov., 1969 [21 Jan., 1969], No. 55880/69. Heading B6C. [Also in Divisions B2, C3 and D2] A planographic plate material is produced by forming a continuous paper web on a papermaking machine, drying to a water content of 5-30% by wt., immediately applying to both sides of the moist web a coating of an aqueous insolubilizable sizing composition, partially drying the coated web so that the coatings are moist but not tacky, immediately applying to each side of the moist web substantially equal amounts of an aqueous self-insolubilizable coating, at least one of the coatings being a planographic composition, heating the web to dry it, and calendering. The basic paper web may be formed from a furnish incorporating melamineformaldehyde resin. The sizing coating may comprise a hydrophilic film-forming material, e.g. polyvinyl alcohol, starch, casein, zein, gum arabic, gelatin, carboxy-methyl cellulose or hydroxyethyl starch and a hardening agent e.g. glyoxal, dimethylolurea, other formaldehyde sources, or metal salts such as zinc acetate or copper sulphate, depending on the film-forming component. The sizing coating may contain a hardening agent, or the second coating may contain a hardening agent for the first coating. The planographic composition may comprise a hydrophilic film-forming material e.g. polyvinyl alcohol, sodium carboxymethyl cellulose or sodium alginate, and a hardening agent as above, depending on the film-forming component. Both compositions may contain fillers e.g. colloidal silica or clay or a mixture.
Patent GB-1474250-A (GB)
Title: Manufacture of plastics articles
IPC: B29C45/38
Filed: 1974-12-30
Abstract: 1474250 Injection mould; sprue removal A WOLMAN 30 Dec 1974 [4 Jan 1974] 56081/74 Heading B5A An injection mould assembly comprises a pair of die plates 19, 20 forming a plurality of mould cavities 27, subsidiary injection passages 25 located at the face of one of the die plates 20 remote from the cavities and each communicating with a common injection passage 24 and with the mould cavities 27 via holes 26 in the die plate 20, and extractor pins 29 extending through an ejector plate 31 and into the passages 25 and holes 26, the ejector plate being movable to strip the material extracted from the passages 25 and holes 26 from the pins 29 after it has been separated from the moulded articles and the plate 20 by retention on the pins 29. The extractor pins 29 and an extractor pin 32 for the main sprue are mounted on a plate 30 which moves away from the ejector plate 31 to strip the sprue and runner material from the pins 29 after both plates have separated from the die plate 20 together. Springs bias apart the die plate 20 and the ejector plate 31, and also the die plate 19 and the mounting plate 22 for core pins 23 which extend into the cavities 27 during the moulding of buttons from acetal copolymer.
Patent GB-1241420-A (GB)
Title: Improvements in liquid-liquid chromatography
Inventor: MAGGS ROBERT JAMES
IPC: G01N30/84
Filed: 1967-12-13
Abstract: 1,241,420. Liquid-liquid, chromatography. PYE Ltd. 2 Dec., 1968 [13 Dec., 1967], No. 56740/67. Addition to 998,107. Heading B1X. Eluent from liquid-liquid chromatography column 15 is applied to travelling stainless steel wire 3, cleansed by passage through oven 5, by means of coating block 6. After passing through oven 7 where solvent is driven off, the coated wire is subjected in conversion chamber 8 to a reactant which converts the coating to a derivative specifically detectable by detector 10 once the derivative has been vapourised or pyrolysed in oven 9. In one embodiment, halides and alkyl leads are converted into electron-capturing derivatives by treatment in chamber 8 with an atmosphere of 1% fluorine in argon. Electron capture detector 10 is connected to pulse generator 11, amplifier 12 and pen recorder 13. In an alternative embodiment, conversion into phosphorus compounds may be effected, detection then being achieved by means of flame ionisation, pulse generator 11 being omitted.
Patent GB-1306587-A (GB)
Title: Printing process using a photocurable printing ink
IPC: C08G75/045
Filed: 1970-12-03
Abstract: 1306587 Printing process W R GRACE & CO 3 Dec 1970 [4 Dec 1969] 57558/70 Heading B6C [Also in Division C3] A photocurable printing ink is printed on to a substrate, then cured by exposure to ultra-violet light. The essential components of the ink are (a) a pigment, (b) a polyene containing at least 2 reactive unsaturated carbon to carbon bonds per molecule, (c) a polythiol containing 2 or more thiol groups per molecule and (d) a photosensitizer, and the ink may also include water, a stabilizing agent and an emulsifier. Pigments, photosensitizers, stabilizing agents and emulsifiers which may be used are listed, and it is stated that in preferred cases the sum of the number of -ene or -yne functions in the polyene and the number of thiol groups in the polythiol exceeds 4.
Patent GB-1330067-A (GB)
Title: Oil control piston rings
IPC: F16J9/06
Filed: 1971-12-14
Abstract: 1330067 Cutting tools RAMSEY CORP 14 Dec 1971 [10 March 1971] 58095/71 Headings B3C and B3T [Also in Division F2] A split oil control piston ring 10 having circumferential channels 21 and 22 in its outer and inner peripheral walls respectively interconnected by circumferentially spaced oil drainage slots 23 is made by first forming the inner channel 22, then forming blind oil drainage slots radially outward from the base of the channel 22 and thereafter forming the outer channel 21 to a sufficient depth to communicate with the slots 23, the ring remaining unsplit at least until after the formation of the blind oil drainage slots. The ring has a pair of scraping beads 15, each having a circumferential groove filled with wear-resistant metal and, in use, the ring is housed in a groove 11 in the piston 12 and urged outwardly by an expander ring 24. In making the ring 10, a machined unsplit ring blank 35 is clamped between a drive member 45, Fig. 4, and a rotatably mounted hollow member 40 of a turning machine and the grooves 19 are cut by edges 47, 48 of a tool 46 and the inner peripheral channel 22 is formed by a tool (50, Fig. 5) located within member 40. After removal from the turning machine, the ring blanks 35, Fig. 14, are stocked in an arbor 60, Fig. 5A, and blind oil drainage slots 23 are arcuately cut by a multi-headed tool 61. The ring blanks are next placed on a further arbor 70, Fig. 7, and sprayed with wear-resistant metal. The arbore may be rotated-and excess metal is removed by a grinding wheel (83, Fig. 9) to form ring blanks as in Fig. 17. The blanks 35 are then returned to the turning machine and the outer channel 21 and bevelled edges 94 are formed by a tool 90, Fig. 10. Finally, each ring is split by a cutter (100, Fig. 19).
Patent GB-1371636-A (GB)
Title: Differential fluid pressure switches
IPC: H01H35/32
Filed: 1971-12-17
Abstract: 1371636 Fluid actuation of switches WESTPORT DEVELOPMENT & MFG CO Inc 17 Dec 1971 [30 Dec 1970] 58716/71 Heading H1N A switch comprises a body 11 containing a bellows 13 subjected to different sources of fluid pressure P1, P2, on each side and actuating through actuating means a switch 31 secured to a cap 22 closing on open end of body 11. The actuating means comprises a lever 35 pivoted at 36 on cap 22 and when moved by bellows 13 lever 35 moves a further lever 40 pivoted at 41 to move a headed rivet 43 to move the actuating member 34 of switch 31. Lever 40 is contained in a second bellows 38 which hermetically seals the interior of cap 22. Cap 22 is secured in body 11 by a nut 27 clamping flange 24 of cap 22 against sealing ring 26 on shoulder 25 of body 11. The operating pressure is adjusted by screwing nut 27 in or out, thus shifting cap 22 and the actuating means axially with respect to bellows 13. In a second embodiment, Fig. 4 (not shown) two caps, switches and actuating means are mounted in a common body with one bellows moving in opposite directions to actuate each switch.
Patent GB-1458827-A (GB)
Title: Chromiferous complex compounds their process of preparation and their applications
IPC: C09B45/48
Filed: 1973-12-19
Abstract: 1458827 Chromium complex azo dyes containing bidentate chelates PRODUITS CHIMIQUES UGINE KUHLMANN 19 Dec 1973 [28 Dec 1972] 58743/73 Heading C4P Novel chromium complex dyestuffs which do not contain SO 3 H or silver halide developing substituents have the formula wherein nucleus A optionally contains up to 3 non-ionic substituents; B is the residue of a benzene, naphthalene, acetoacetanilide or heterocyclic coupling component which may contain up to 3 non-ionic substituents; Y<SP>1</SP> 1  is O or CO.O ; y<SP>1</SP> 2  is fixed on B in the ortho position with respect to the azo linkage and is O or NH; D is the residue of a bidentate chelating agent; and Z is a molecule of ammonia or an organic base. They are prepared by treating a metallizable monoazo compound of the formula wherein Y 1  is OH, OCH 3  or CO 2 H and Y 2  is OH or NH 2  and is ortho to the azo linkage with a salt of trivalent chromium at 110-130‹ C. in a polar solvent of b.pt. > 110‹ C. and then reacting the 1 : 1 cationic chromium complex thus obtained with a bidentate chelating agent in the presence of ammonia or an organic base. Suitable chelating agents include #-diketones, ohydroxy - aldehydes, o - nitroso - phenols and -naphthols, peri - hydroxy - quinones and N- heterocycles containing OH peri to N. Suitable bases include pyridine, laurylamine, ethylamine and ethanolamine. The novel dyestuffs may be used to dye or print fibres based on polyamides, polyesters or cellulose triacetate and for the coloration of bulk macromolecular synthetic materials such as polyesters and polyamides.
Patent GB-1311638-A (GB)
Title: Synthetic meat aroma
IPC: A23L27/21
Filed: 1971-12-22
Abstract: 1311638 Meat aroma L GIVAUDAN & CIE SA 22 Dec 1971 [23 Dec 1970] 59556/71 Heading A2B A synthetic meat aroma is obtained by heating a mixture of proline, cysteine, methionine, or a derivative or salt of these amino acids which form the free acid under the conditions of the process, a pentose and a polyalcohol which is a trihydric alcohol or glycol. The mixture may contain in addition other amino acids and water. The pentose is preferably ribose and the polyalcohol preferably glycerine.
Patent GB-597306-A (GB)
Abstract: 597,306. Miners headlamps. YOULE, C. G., and BLAKEY, S. Aug. 13, 1945, No. 20802. [Classes' 75 (iii) and 75 (iv)] [Also in Group XXXV] A miner's headlamp is provided with a metal contact type of rectifier n connected to terminals b, e of the lamp so that securing the lamp upon a charging board charges the accumulator, whilst removal of the lamp leaves the terminals b, e dead, due to the rectifier n. When the lamp is hung by the hook b on the board, an A.C. charging circuit is completed through terminal e, hook b, casing a, reflector m, rectifier n, wires o, k to the accumulator, the return circuit being through wire j, screw e, plate f and terminal g. When the lamp is removed from the board, a circuit can be completed through wire k, switch p, wire s, the lamp bulb and wires h, j.
Patent GB-1242710-A (GB)
Title: Hydrogenation of heavy hydrocarbon oils containing asphaltenes
IPC: C10L1/04
Filed: 1968-12-18
Abstract: 1,242,710. Refining heavy hydrocarbon oils. CITIES SERVICE RESEARCH & DEVELOPMENT CO. 18 Dec., 1968 [29 Dec. 1967], No. 60102/68. Heading C5E.  A process for the hydrogenation of heavy hydrocarbon feed oil at least 10 volume per cent of which boils above 975‹ F. and which contains at least 5 wt. per cent asphaltenes and at least 200 parts per million of asphaltene based nickel and/or vanadium comprises (a) contacting at least a portion of such feed oil with solvent selected from the group consisting of pentane, hexane and heptane, such solvent containing no more than 10% lower boiling material, to thereby produce an extract fraction rich in asphaltenes and a raffinate fraction of reduced asphaltene content and containing not more than 100 parts per million asphaltene based metal; (b) in a hydrogen reaction zone contacting said raffinate fraction with hydrogenation catalyst and hydrogen-containing gas under hydrogenation conditions to thereby hydrogenate said raffinate fraction; and (c) recovering liquid product from said hydrogenation. zone and combining same with said extract fraction to form fuel oil product. The hydrogenation catalyst may be Co, Fe, Mo, Ni, W, their sulphides or oxides, or cobalt molybdate, optionally with natural silicates, on alumina or silicaalumina. In an example an atmospheric residuum is treated.
Patent GB-1374789-A (GB)
Title: Force measurement systems
IPC: G01L1/14
Filed: 1972-12-29
Abstract: 1374789 Capacitive force transducers W &  T AVERY Ltd 29 Dec 1972 [30 Dec 1971] 60625/71 Heading GIN A capacitive force transducer comprises first and second spaced-apart capacitance plates 33, 34 and a third resiliently-deformable capacitance plate 32 mounted between the first and second plates, the third plate being connected to a force receiver so as to deflect relative to the first and second plates in response to application of a force, and the third plate being constructed so that at least the major part of the applied force is counterbalanced by the inherent spring resistance of the third plate. As shown, the third plate is constituted by a ceramic diaphragm spring the inner portion 37 of which is provided on opposite faces with annular electrodes 35, 36 which co-operate with the fixed first and second annular plates 33, 34. The force is applied to the spring 32 by a tie rod 31. The arrangement is immersed in dielectric liquid, e.g. liquid paraffin. The ceramic material may be alumina or silicon nitride. Electrical resonant circuits including a coil 42, a transistor 43 and a capacitor 44 are provided.
Patent GB-1274328-A (GB)
Title: Method and apparatus for generating video signals
IPC: H04N5/92
Filed: 1969-12-15
Abstract: 1,274,328. Television. INTERNATIONAL BUSINESS MACHINES CORP. 15 Dec., 1969 [15 Jan., 1969], No. 60961/69. Heading H4F. The synchronizing signals in a standard television video signal from a vidicon camera are inverted by appropriate gating of the video signal so that their range of variation falls within the range of variation of the video information, and preferably their amplitude is increased so that they occupy the complete range of variation of the video information thereby increasing their signal-to-noise ratio. This enables the bandwidth of the video signal to be reduced, e.g. when it is converted into a frequency modulated signal for magnetic recording. As described the video signal is fed to two channels, in one of which it is amplified by a factor of three and inverted, which are gated by delayed signals derived from the camera sync. generator which itself is controlled by clock pulses played back from a magnetic disc. The gated signals are then combined, frequency modulated and recorded on a further track on the magnetic disc. On playback the recorded signal is converted by means of a similar gating amplifying and inverting arrangement into the original camera output signal.
Patent GB-1395334-A (GB)
Title: Packing assemblies
IPC: F16J15/32
Filed: 1971-12-31
Abstract: 1395334 Shaft seals BAL Ltd 31 Aug 1972 [31 Dec 1971] 60961/71 Heading F2B A seal for a piston-rod 12 is provided with a roughened zone 18 for disturbing the liquid film on the surface of the rod so that the sealing lip or lips 17 can penetrate the film and provide a good seal. The roughened zone may be knurled or formed by axial ribs and the lips 17 may be staggered. An anti-extrusion ring 16 of synthetic resin may be incorporated in a further ring 15.