baber/WOPTO huggingface dataset:
Patent GB-1232112-A (GB)
IPC: G01J3/42
Filed: 1968-05-17
Abstract: 1,232,112. Photo-electric absorptiometers. MULLARD Ltd. May 17, 1968, No.23632/68. Heading G1A. [Also in Division G2] Beam switching in an alternating type of twopath absorptiometer is effected by a Faraday element switching the plane of an incoming beam of polarized light between two positions and a device which selectively directs light of these planes of polarization along the two paths. Monochromatic plane polarized infrared light from a source 1 is switched between planes of polarization at 90 degrees to one another by a yttrium iron garnet Faraday cell 3 and falls on a germanium plate 7 at its Brewster angle. The beams of different polarization pass through a test cell 11 and a reference cell 12 to a detector 14 connected to a phase sensitive rectifier 21. The windows of cells 11, 12 are at the Brewster angle to enhance the polarization selection of the plate 7. The error signal from rectifier 21 corresponding to the difference in absorption in the cells 11, 12 controls a Faraday cell 17 which together with a Brewster angle reflection polarizer 10 constitutes an attenuator in the reference path. A meter 20 measuring the error signal indicates the difference in attenuation. A polarizer 16 reduces the intensity of the residue of wrongly polarized light transmitted by plate 7 and permits equalization of the light fluxes in the paths. The absorptiometer may be used to measure the alcohol content of a driver's breath.
Patent GB-1234659-A (GB)
IPC: B65B43/06
Filed: 1968-10-18
Abstract: 1,234,659. Bag-making apparatus; laminates. ZELLSTOFFABRIK WALDHOF. 18 Oct., 1968 [31 Oct., 1967], No. 49600/68. Headings B5D and B5N. A two-ply laminated foil e.g. for use in making bags, sacks &c. is produced by winding two lengths of foil 14, 15 together into a roll 13 (Fig. 1, not shown) cutting and removing the exposed turn (17 to 18) of the outer ply and feeding the ends 19, 20 of the two plies from the roll thus effectively reversing the superposed relationship of one with respect to the other. Before being wound on roll 13 the plies can pass through a printing and/or a perforating machine. After the reversal operation the perforations are staggered (Fig. 4, not shown) and the printing is on the inner surface of one or both of the plies, according to whether one or both plies were printed, and is protected from damage. The ink used may be adhesive or the surface(s) may be coated with adhesive so that the two plies are united. The process may be used for producing two-ply foils with roughened outer surfaces with printing on the inner smooth surface. In this method a tube is produced with a rough outside and smooth inside. The tube is flattened and cut along the edges and subjected to a reversal operation. The smooth side is printed and the plies again reversed.
Patent GB-1250218-A (GB)
IPC: F02B75/28
Filed: 1968-12-04
Abstract: 1,250,218. Automatic analysis. F. HOFFMANN-LA ROCHE & CO. A.G. 4 Dec., 1968 [15 Dec., 1967], No. 57541/68. Heading B1X. [Also in Divisions Gl and G2] A device for automatic analysis of liquids from containers 17 in holders 2 of conveyor belt 1 comprises a plurality of reaction vessels (5) formed by depressions in band 4 which may be of transparent plastics material, a metering arrangement which may comprise pump 11, plastics tubes 10 raised and lowered by eccentric 8 for introducing into the vessels (5) predetermined quantities of the liquids to be analysed and of one or more reagents, detection means for detecting any reaction that occurs in each vessel and driving means for advancing band 4 to move the vessels past the metering arrangement and the detection means. The detection means may comprise bar 12 mounted above the belt and carrying a row of light sources 13, and bar 14 mounted below the belt and carrying a row of photocells 15, and may be used for measurement of colour or turbidity. Alternatively electrodes may be immersed in the vessels for measurement of pH and electrical conducitivity. In determination of blood groups, the contents of the vessels may be photographed or photocopied. Reagents disclosed comprise a universal colour indicator for pH determination; sulphosalicylic acid for protein determination; a glucose oxidase composition for glucose determination; a sodium nitroferricyanide composition for determining ketones; methylene blue for bilirubin determination; para dimethyl aminobenzaldehyde for urobilinogen, porphobilinogen, indole, indoleacetic acid; an oxalate composition for determining calcium and a zincatehydrogen peroxide reagent for blood. There is, reference to determination of phenylpyruvic acid, bacteriuria and amylase.
Patent GB-1250390-A (GB)
IPC: C08F255/00
Filed: 1969-12-05
Abstract: 1,250,390. Process for grafting olefin polymers. AVISUN CORP. 5 Dec., 1969 [5 Dec., 1968], No. 59490/69. Heading C3G. An ethylenically unsaturated monomer is grafted on to an olefin polymer using as free radical initiator a diperester of formula wherein R 1  and R 2  are independently selected from branched C 4  to C 10 -alkanoyl radicals. Preferably the monomer is a nitrogen-containing heterocyclic compound, e.g. a vinyl pyridine, vinyl morpholinone or vinyl lactam, or a mixture thereof with another monomer. In examples, the graft polymerization is carried out in aqueous suspension using a catalyst selected from 2,5 - dimethyl - 2,5 - bis (2 - ethylperhexanoyl)hexane, or a mixture thereof with t-butyl- 2 - ethylperhexanoate, 2,5 - dimethyl - 2,5 - bis- (perisobutyroyl)hexane, 2,5 - dimethyl - 2,5- bis(3,5,5 - trimethylperhexanoyl)hexane or 2,5- dimethyl - 2,5 - bis(perneopentanoyl)hexane. The olefin polymer and graft monomer as are follows: (a) polypropylene, 4-vinylpyridine and styrene, or acrylonitrile; (b) polypropylene, 2- methyl-5-vinyl pyridine and styrene; (c) polypropylene and N-vinyl-2-pyrrolidone and (d) propylene-ethylene terminal block copolymer, 4-vinylpyridine and styrene. Fibres produced from the polypropylene grafted with 4-vinylpyridine and styrene are dyed.
Patent GB-1250866-A (GB)
IPC: B21F27/00
Filed: 1970-03-10
Abstract: 1,250,866. Wire netting. BEKAERT S.A. N.V. 10 March, 1970 [28 March, 1969], No. 11470/70. Heading D1K. Hexagonal mesh wire netting in which the opposite sides of the meshes are formed by a triple twist 2 between adjacent wires and each wire 1 is twisted alternately with wires 1a, 1b to its left and right is reinforced by elements 5, e.g. wires, rods or the like, passing through the twists 2. During manufacture the netting is advanced by a drum 3 with pins 4 to engage the meshes. The reinforced netting may be used for making gabions for reinforcing the banks of waterways.
Patent GB-1251429-A (GB)
IPC: A24D1/02
Filed: 1969-05-09
Abstract: 1,251,429. Cigarettes. PHILIP MORRIS Inc. 9 May, 1969 [10 May, 1968], No. 23868/69. Heading A2C. A smoking product, e.g. a cigarette, comprising tobacco enclosed in a combustible wrapper has perforations in the wrapper closed by a non-toxic cellular filling material which is affected, e.g. melted, sublimated, disintegrated, or changed chemically, by a temperature between 35 and 250C so that the perforations are opened to admit air as the product is smoked. The perforations may correspond to 0.2% to 1.5% of the total area of the wrapper, and may be omitted over a length of about 20 mm. from one end of the product, i.e. the end remote from the filter in the case of filter cigarettes. The filling material, which may change colour when affected by heat, may be coated on the wrapper to a thickness of 3 to 60 microns before or after the wrapper is applied to the tobacco rod. Coating may be effected by printing, roll-coating, spraying or by knife or brush and is preferably such as to cover only the perforations. The filling material may be a water-in-oil emulsion of which the continuous phase is a polymer such as ethyl cellulose, polystyrene, polyvinyl chloride, a copolymer of vinyl chloride, polymethyl-methacrylate, nitrocellulose, cellulose acetate, cellulose acetate-butyrate, cellulose acetate-propionate or ethylene vinyl acetate, and the dispersed phase is aqueous. The continuous phase is mixed with a solvent that is insoluble in water, e.g. benzene, toluene, chloroform, &c., and the dispersion of the aqueous medium is aided by an emulsifier such as stearyl dimethyl, benzyl ammonium chloride or an aromatic polyglycol ether. A plasticizer such as tricresyl phosphate, dioctyl phthalate or castor oil may be added to lower the softening temperature. When a solvent with a relatively low evaporation rate such as toluene or xylene is used the evaporation of the aqueous dispersed phase may be retarded by the addition of e.g. salts such as sodium or lead acetate or polyvalent alcohols such as ethylene glycol or glycerol. Instead of an emulsion, the filling material may consist of two non-aqueous liquids in which the dispersed droplets do not appear until after application and evaporation of some of the solvent.
Patent GB-1252543-A (GB)
IPC: H02P25/14
Filed: 1970-04-09
Abstract: 1,252,543. Control of A.C. motors. CUTLERHAMMER Inc. 9 April, 1970 [9 April, 1969], No. 16954/70. Heading H2J. [Also in Division G3] A series motor is supplied from an A.C. source through a bidirectional thyristor Q whose gate is associated with a ramp and pedestal voltage network which is fed from transformer 4 through rectifier 6. The pedestal voltage is developed across capacitor C1, the magnitude of the voltage being controlled in accordance with the base potential of transistor T1. A ramp voltage is developed by current through variable resistor P1 into capacitor C1, a transistor UJT being triggered when the potential at junction 10 reaches a critical value. The capacitor C1 then discharges to fire both a rectifier S and the thyristor Q. The voltage Ec across a capacitor C2 is a measure of the true speed of the motor since the armature voltage is compensated for resistance-drop. The capacitor C2 is connected in series with diode D6 and resistor R7 and is shunted by transistor T2 which is controlled by signal resistor RS. The capacitor C2 integrates the counter-E.M.F. and maintains it over a full cycle of the source voltage to avoid hunting. A network for mixing the feedback signal Ec with a speed reference signal comprises resistors P2, P3, P4, connected to the base of the transistor T1. Resistor P4 sets the speed while resistors P2, P3, respectively determine the lower and upper speed-limits.
Patent GB-1258898-A (GB)
IPC: B01F15/00
Filed: 1968-02-13
Abstract: 1,258,898. Mixing device. SILVERSON MACHINES Ltd. 5 Feb., 1969 [13 Feb., 1968], No. 7141/68. Heading B1C. A mixing device comprises a bladed rotor 1 secured to shaft 5 connected to the output shaft of electric motor 7, a stator 11 provided with a bearing to support the lower end of shaft 5, and members 27 for supporting the stator, each member extending in a direction away from the stator axially and radially outwardly of shaft 5 to a plate 29 secured to the motor housing. Members 27 may be formed from tubing having slots or may be rods. When the motor is energised, material within the stator is rotated by the rotor, sheared, and expelled radially outwardly through apertures in the side of the stator. Further material is drawn upwardly into the stator via an aperture in the lower end wall of the stator.
Patent GB-1264091-A (GB)
IPC: C08F299/02
Filed: 1970-01-27
Abstract: 1,264,091. Laminates. DOW CHEMICAL CO. 27 Jan., 1970, No. 3784/70. Heading B5N. [Also in Division C3] Three ply glass fibre laminates are prepared using a thermosettable resin comprising (A) at least 30% by weight based on the total weight of the thermosettable resin of the product of the reaction of a mixture of an unsaturated polyester, a polyepoxide, and an ethylenically unsaturated monocarboxylic acid; the mixture containing sufficient polyepoxide to provide from 0À8 to 1À2 equivalents of epoxide per equivalent of the carboxylic acid (-COOH) and from 5 to 95% by weight of the polyester, based on the total weight of the mixture, the acid content of the reaction product as -COOH, being from 1 to 12% by weight, based on the weight of the reaction product and (B) up to 70% by weight based on the total weight of the thermosettable resin of a polymerizable unsaturated monomer containing a >C = CH 2  group.
Patent GB-1264854-A (GB)
IPC: C07F9/26
Filed: 1969-04-23
Abstract: 1,264,854. Preparing bis-(dimethylamino)- phosphoryl fluoride. WACKER-CHEMIE G.m.b.H. 23 April, 1969 [24 April, 1968], No. 20741/69. Heading C2P. Bis - (dimethylamino) - phosphoryl fluoride is obtained by reacting bis-(dimethylamino) phosphoryl chloride with an aqueous solution of an alkali metal fluoride or ammonium fluoride with the use of an inert, water-insoluble solvent (e.g. toluene) for bis-(dimethylamino) phosphoryl chloride, a phosphate buffer solution prepared from primary and secondary phosphates such as to have a pH value of 7 as well as dimethylamine hydrochloride being added to the starting mixture which contains 30 to 75% by weight of water referred to the weight of the anhydrous alkali metal or ammonium fluoride, and the reaction being carried out at from 60‹ to 110‹ C. The phosphate buffer is preferably a mixture of KH 2 PO 4  and Na 2 HPO 4  in aqueous solution and is adjusted so that it has a pH of 7. The preferred alkali metal fluoride is KF and the dimethylamine hydrochloride may be used in solid form or in the form of a 50% aqueous solution. The bis-(dimethylamino) phosphoryl chloride may be prepared in toluene solution by adding dimethylamine in solution in toluene to a cooled solution of POCl 3  in toluene with subsequent removal by centrifugation of the solid phase comprising dimethylamine hydrochloride.
Patent GB-1266482-A (GB)
IPC: G03D15/06
Filed: 1970-02-06
Abstract: 1,266,482. Picture mounts. H. SOVILLABRULHART. Feb.6, 1970 [Feb.6 1969; May 16, 1969; Oct.13, 1969; Nov.11, 1969], No.5884/70. Heading A4X. A photographic print 6 is preserved by locating the print in a chamber 5 formed between two glass plates 1, 2 one of which is transparent, evacuating the chamber and hermetically sealing the peripheral edges of the plates. After evacuation there may be introduced into the chamber a non-oxidizing medium e.g. argon, neon, krypton xenen, nitrogen, paraffin or kerosene oils, anti-ultraviolet radiation agents and agents preventing ageing of the print. The print may be sprayed with fine droplets of a varnish to avoid the appearance of Newton's rings and the disappearance of the colour of a colour print at points of contact with the plates. The other of the plates may be transparent, opaque or translucent.
Patent GB-1288092-A (GB)
IPC: H04N1/032
Filed: 1969-06-24
Abstract: 1288092 Facsimile reproduction MUIRHEAD Ltd 3 June 1970 [24 June 1969] 31796/69 Heading H4F A cassette 2 adapted to be mounted in a facsimile receiver and containing a roll 3 of paper impregnated with a liquid which marks the paper when an electric current passes therethrough, has a slit 12 defined between a rounded nose 13 and a flexible sealing lip 14 for exit of the paper and also comprises a straight edge electrode 17 which co-operates with an electrode 32  in the receiver to define a pinch spot and a roller 26 which co-operates with a drive roller 34 in the receiver to form a drive nip. The electrode 17 is a replaceable stainless steel strip and the electrode 32 is either a rotatable helix or, as shown, has an edge normal to the edge of strip 17 and is moved along the strip by a carriage 30 on a rail 31. The roller 26 is mounted on arms 20 biased by a spring 21 away from the cassette. Pins 8, 42 on each side of the cassette engage in slots 10, 40 respectively in plates 9 to firmly locate the cassette in the receiver, which is aided by the spring loading of the arms 20. In a modification, Fig. 3 (not shown), a further portion indicated at 121 is cut from the plate 9 and each side of the cassette is provided with a rib ending at the location of pins 8, 42.
Patent GB-1290019-A (GB)
IPC: F02B3/06
Filed: 1969-07-08
Abstract: 1290019 I. C. engine intake passages WATERMOTA Ltd 6 Oct 1970 [8 July 1969] 34308/69 Heading F1B Air is directed into a cylinder by an inlet duct 1 substantially at a tangent to the cylinder bore so that the air rotates about the cylinder axis and a tapering longitudinally extending projection 10 is provided in the duct. The projection 10 extends from the upper wall of the duct 1, is of V-cross-section and is tapered to increase in depth and width in a direction towards the valve 9. A duct portion 3 machined in the head provides a sharp intersection 6 with the flat floor of the duct 1 upstream of the valve seat 2. The flat face of the cylinder head co-operates with a recess in the piston to define the combustion chamber and fuel is injected as radial sprays from the centre of the combustion chamber.
Patent GB-1295663-A (GB)
IPC: H04N5/84
Filed: 1969-03-14
Abstract: 1295663 Television synchronizing systems CENTURY 21 FILM PROPS Ltd 13 March 1970 [14 March 1969] 13622/69 Headings H3A and H4F A television synchronizing system comprises a pulse generator TR1-TR3 actuated by the shutter mechanism of a film camera 3 for producing pulses in synchronism with the shutter rate, a phase comparator TR9, TR10 for comparing the phase of the outputs of the pulse generator TR1-TR3 and an oscillator TR13, TR14, the compared output being applied, e.g. via TR15, to control the frequency of the oscillator, a control generator TR16, TR17 driven by the oscillator for controlling the frame rate or field repetition frequency of the system, i.e. of a TV camera 8 and a TV monitor 6. As the shutter rate is 24 frames per second, the oscillator output may be applied via a suitable divider TR11, TR12 to obtain an equal number of pulses per second. The control generator TR16, TR17 produces a sawtooth wave which after D.C. restoration is applied along 7 to bias off the normal frame drive and to trigger the camera at the desired field repetition frequency. The camera 8 views a scene at 9 and its video output is reproduced on the monitor 6 which is in turn viewed by the film camera 3. The system may also be used for synchronizing video recording machines or back projection equipment. The pulse generator may comprise a photo-electric cell 1 for receiving light from lamp 2 reflected by the shutter mechanism. Alternatively, it may comprise a mechanical contact or a magnet attached to the shutter mechanism. The pulse generator output is applied to a monostable circuit TR4, TR5 for generating a black bar on the monitor 6 to provide visual indication of synchronization. When desired, the bar may be faded out by variable delay circuit C1, R1, RV1.
Patent GB-1297139-A (GB)
IPC: G09B9/32
Filed: 1969-07-03
Abstract: 1297139 Head up display apparatus, flight simulators PILKINGTON PERKIN-ELMER Ltd 22 Sept 1970 [3 July 1969] 33601/69 Heading G2J The invention concerns flight simulators and head up display devices. In the flight simulator of Fig.1 information displayed by three cathode ray tubes 5, 6, 7 each displaying in different colours, e.g. red, green and blue is combined by a beam-splitting optical system 9 and the collimated light from the system 9 is received by a partial reflector 12 and reflected thereby to a reflex reflector 13. Various kinds of reflex reflectors are described. The light reflected by the reflex reflector 13 passes back through the partial reflector 12 through a lens system 15 and is reflected by a windscreen 3 on to a reflex reflector 19 which reflects it back through the windscreen 3 to the pilot 1. Various kinds of reflex reflector retro-arrays 19 are described. In Fig.2 a head up display comprises a cathode ray tube 34 displaying information which passes through a collimating lens system 35, partial reflector 37 and is reflected by a reflex reflector 39 so that it is reflected by the partial reflector 37 into the pilots field of vision.
Patent GB-1303058-A (GB)
IPC: F16L55/103
Filed: 1969-10-08
Abstract: 1303058 Refrigerating pipes UNITED KINGDOM ATOMIC ENERGY AUTHORITY 11 Dec 1970 [8 Oct 1969] 49544/69 Heading F4H  A freezing system for freezing liquid in a pipe 1 comprises a leak-tight jacket 2, an injection tube 4 terminating in a nozzle 5 disposed within a tubular baffle 6, an antisplash screen 7 and a vent pipe 9, such that in operation a liquefied refrigerant gas (e.g. CO 2 ) is expanded through the nozzle into a liquid (preferably a low freezing point liquid ethoxyethanol), thus freezing the pipe and its liquid content. The gas bubbled through the liquid is vented through the vent 9.
Patent GB-1309252-A (GB)
Title: Electroplating of fibres
IPC: D01F11/12
Filed: 1969-03-25
Abstract: 1309252 Electro-plating of fibres INTERNATIONAL RESEARCH & DEVELOPMENT CO Ltd 16 March 1970 [25 March 1969] 15600/69 Heading C7B [Also in Division D1] Electrically conductive fibres of a bundle are spread prior to entering an electro-plating bath. The spreading is performed by effecting relative movement between the bundle and fluid jets so as to successively subject the bundle to several rows of fluid jets, each row extending transverse to the length of the bundle and the number of jets in successive rows increasing so as to progressively spread the fibres apart. As shown, a bundle of graphite fibres passes through a bath of electrolyte in a tank 1. The fibres are loosened by an oscillating device 5, spread, before entering the bath, by jets of electrolyte in a  device 6 (illustrated in more detail in Figs. 2 and 3, (not shown)) and electro-plated as they pass over an anode 9, the fibres being separated from the anode by a perforated spacer. The electrolyte is continuously circulated through ducts 7 and 8. Typically the anode is Ag and the electrolyte NaCN and AgCN in water. The electro-plated fibres may be pressed and sintered so as to form reinforced components.
Patent GB-1319033-A (GB)
Title: Rotor for a turbogenerator
IPC: H02K3/16
Filed: 1971-01-20
Abstract: 1319033 Dynamo-electric machines B L KONOVALOV V S KILDISHEV V B KAPLUNOV V I TOKAREV B V SPIVAK B I BYALY A A CHIGIRINSKY E K GLIDER O B GRADOV D B KARPMAN P Y KARTASHEVSKY and I Y CHEREMISOV 20 Jan 1971 2732/71 Heading H2A In a slotted rotor, particularly for a turboalternator, having a short-circuiting damper ring 4 at each end, the ring has the same shape as the rotor teeth and is located in an annular groove 2 which is deeper than the rotor slots 1. As shown, the ring is wedge-shaped in crosssection and is made up of arcuate segments. The groove is milled directly in the rotor core and the ring segments are held therein by wedges 5 retained by a binding ring 6. Alternatively, a unitary ring may be located in a wedge-shaped groove (Fig. 2, not shown) formed between an inclined surface on the end of the rotor core and a ring (7) secured on the rotor by a key (8).
Patent GB-1325426-A (GB)
Title: Diffusion cell
IPC: B01D53/22
Filed: 1971-03-23
Abstract: 1325426 Hydrogen diffusion JOHNSON MATTHEY & CO Ltd 22 March 1972 [23 March 1971] 7566/71 Heading B1L A hydrogen diffusion unit comprises an upper metal foil sheet 10 and a lower metal foil sheet 12. These are strengthened by helical coils of stainless steel wire 14 and 16.