baber/WOPTO huggingface dataset:
Patent GB-1358933-A (GB)
Title: Relief-pattern holograms
IPC: G03H1/04
Filed: 1971-08-25
Abstract: 1358933 Holography R C A CORPORATION 25 Aug 1971 [2 Sept 1970] 39830/71 Heading G2J  Focused image holograms are formed as relief patterns in a vinyl recording tape. Preferably the information beam 120 is focused using a microscope objective 122 of 3X magnification to give a reduced size image on a photoresist medium 124. The mutually coherent reference beam 134 is collimated. The developed hologram is then metal coated and used as a die to produce copies in the vinyl tape. Exposure may be controlled by a shutter or pulsing the laser 102. In one embodiment for reconstructing images, a plurality of such holograms on a tape 300, Fig. 3, are sequentially advanced past a white light illuminating beam 314. A shutter 308 is linked to the advancing means 302. The reconstructed image in beam 318 is projected by lens system 322 on to a TV camera 328 for eventual display at 332. The camera is synchronized for scanning with means 302 and shutter 308. The hologram tape may be of a video play back. The information on such focused image holograms, e.g. of a reflective type, may be simply retrieved by illuminating them with a microscope lamp and viewing through a microscope. Reference has been directed by the Comptroller to Specification, 1139955.
Patent GB-1477395-A (GB)
Title: Heat-resistant adhesive lacquers as wire coatings
IPC: C08L75/00
Filed: 1974-09-12
Abstract: 1477395 Polyurethane - esterimides / epoxy resins SCHWEIZERISCHE ISOLA-WERKE 12 Sept 1974 [13 Sept 1973] 39845/74 Headings C3B and C3R Heat curable adhesive lacquers for coating electrically insulated conductors, e.g. wires consist essentially of a mixture of (1) a polyurethane-esterimide having terminal isocyanate groups blocked by a monohydric phenol and being derived from (A) an ester-imide containing OH groups obtained from a dicarboxylic acid of the formula and a polyalcohol of the formula and of the formula in the molar ratios a : (b 1 +b 2 )= 1 : 1À2 to 1 : 2, b 1  : b 2 = 1 : 1 to 10 : 1 and (B) a polyfunctional isocyanate of the formula or a mixture of two or more thereof and the ratio of the hydroxyl groups to the isocyanate groups is from 1 : 1 to 1 : 1À5 and (2) an essentially linear epoxide resin having secondary OH groups and a molecular weight of at least 30,000 in or organic solvent. The epoxide resin is suitably a condensation product of bisphenol A and epichlorohydrin. Wires coated with the adhesive may be formed into a coil and stuck together by heating.
Patent GB-926864-A (GB)
Title: Improvements in or relating to mixers
IPC: B01F15/00
Filed: 1961-11-09
Abstract: 926,864. Agitating suspensions. N. R. ANDERSON. Nov. 9, 1961 [Nov. 28, 1960], No. 40104/61. Class 86. A mixer for cement grouts and other suspensions forming heavy sediments comprises a stirrer 19 having two impeller blades 34, 34a made of reinforced flexible, preferably resilient fabric which flex in operation and when lowered into the material skate over the surface of a sediment instead of digging in and stalling. The stirrer is carried on a tubular spindle 9 which may be raised by a handle 22 which fulcrums on rollers 23 and is pivoted at 21 to a sleeve 20 vertically slidable on the spindle 9 and bearing, when the handle is lifted, on the underside of a cap 10 fixed to the spindle. The latter is rotated by a motor 13 (which may be a portable electric or pneumatic drill or a petrol engine) vertically slidable on the uprights 14, 14a. A pillar 25 fixed to the bottom 3 of the container 2 enters and acts as a guide for the spindle 9; it has a square cross-section so that its edges scrape deposits from the bore of the spindle whence they are discharged through holes therein as at 30. The spindle is supported in its lower position on the top of the pillar 25, see Fig. 3 (not shown). The drum 1 has internal deflectors 7 and a rim 8.
Patent GB-1260033-A (GB)
Title: Process for dyeing fibre material containing polyester and preparations suitable for carrying out the process
IPC: D06P1/607
Filed: 1969-08-11
Abstract: 1,260,033. Dyeing polyester/wool mixtures. CIBA-GEIGY A.G. 11 Aug., 1969 [16 Aug., 1968], No. 40144/69. Heading D1B. Fibre mixtures of polyester and wool are dyed with disperse dyes and wool dyes in presence of a carrier mixture comprising a) a sodium or potassium salt of o-phenylphenol, b) a levelling agent, and c) a wool reserving agent, the quantity ratio (a):(b):(c) being (20-60):(5-20):(2-20) the dyebath containing 2-15% by weight relative to the material to be dyed of the sodium or potassium salt of o-phenylphenol. The wool reserving agent may be a condensation product of formaldehyde and mixtures of sulphones having two phenol residues bonded to the SO 2  group and hydroxybenzene or naphthalene sulphonic acids, the levelling agent being the addition compound of 5-70 moles of ethylene oxide with mono- or diamines at least one nitrogen atom of the amine being substituted by a hydrocarbon residue of 16-22 carbon atoms. The wool may be dyed with reactive dyes, two-colour or tone-in-tone effects may be obtained.
Patent GB-1267606-A (GB)
Title: Improvements in polyesters
IPC: C08G63/688
Filed: 1969-08-14
Abstract: 1,267,606. Crystalline polyesters. GENERAL TIRE & RUBBER CO. 14 Aug., 1969 [1 May, 1969], No. 40776/69. Addition to 1,225,803. Headings C3P and C3R. A crystalline polyester comprises the reaction product or at least partially isomerized reaction product of a cyclic ether or thioether of the formula I where R 1  and R 2  are the same and are hydrogen or C 1-4  alkyl and Y is oxygen or sulphur, and at least one anhydride of a dicarboxylic acid, the reaction being carried out in the presence of a double metal cyanide complex catalyst, said polyester having a molecular weight of about 1000 to 10,000. Preferred reactants are isobutylene oxide and maleic and/or phthalic anhydride. Polyesters containing maleate groups may be at least partially isomerized to form fumarate groups. - . A fibreglass composite material comprises (a) a polyester of the invention, (b) a cross-linking or curing monomeric material, (c) 15 to 75 parts by weight of glass fibres per 100 parts by weight of (a) + (b), (d) 20 to 300 parts by weight of a finely divided filler per 100 parts by weight of (a) + (b) and (e) a free radical catalyst, the ratio of (a) to (b) being from 75: 25 to 50: 50 parts by weight. Preferably, the component (b) is a copolymerizable ethylenically unsaturated material such as diallyl phthalate, styrene, divinyl benzene, vinyl toluene, vinyl acetate, methyl methacrylate, ethylene glycol diacrylate, vinyl benzoate and mixtures thereof. The filler may be clay or silica and the catalyst is preferably a peroxide or an azo compound.
Patent GB-1186566-A (GB)
Title: Improvements in and relating to Devices for Measuring Ion Current
IPC: H01J49/32
Filed: 1967-09-06
Abstract: 1,186,566. Particle spectroscopes. VARIAN MAT G.m.b.H. 6 Sept., 1967 [16 Sept., 1966], No. 40809/67. Heading H1D. A device for the measurement of the ion current reaching the photographic plate 16 of a particle spectroscope using mass separation by a magnetic field comprises a measuring interceptor diaphragm 17a, 17b connected to measuring device 25, the diaphragm being between the magnetic field and the plate 16 and extending over the entire length of the photographic plate. A slotted diaphragm may intercept the ions originating from the vicinity of the pole faces. The interceptor halves 17a, 17b may be mutually insulated and each connected to a measuring device enabling asymmetries in the arrangement for instance to be determined. Asymmetrical electrode arrangements may be used. Screening electrode 22 with collar 24 prevents charges on plate 16 influencing the potential on the interceptor 17a, 17b. The intercepted current may be measured with a D.C. amplifier or may be directly integrated by charging a condenser. Spark ion or other sources may be used.
Patent GB-1193345-A (GB)
Title: New Salts of Cationic Dyestuffs and Process for their Preparation
Inventor: CALLA PIERRE JOSEPH FREDERIC
IPC: C07C51/41
Filed: 1967-09-07
Abstract: 1,193,345. Bicarbonates of cationic dyes. UGINE KUHLMANN. 7 Sept., 1967 [8 Sept., 1966], No. 40852/67. Heading C4P. The bicarbonates of cationic dyes which contain a group of Formula I in which one Y is an alkyl group and the other is a carbon atom to which the azo group is attached are prepared by treating a water-soluble salt of a dye containing a group as above with a water-soluble bicarbonate at temperatures up to 60 C. or under CO 2  pressure at up to 80 C. The bicarbonates produced are particularly soluble in organic carboxylic acids, e.g. acetic acid in which high concentrations of the dye may be obtained. In particular bicarbonates of dyes of Formulµ II and III in which the N0 2  groups are in 5 or 6 positions and R is hydrogen or methyl are specified.
Patent GB-1276326-A (GB)
Title: Production of monocarboxylic acids
IPC: C07C51/12
Filed: 1969-08-15
Abstract: 1276326 Carbonylation catalysts MONSANTO CO 15 Aug 1969 [15 Aug 1968] 40884/69 Addition to 1234641 Heading B1E [Also in Division C2] Catalysts comprising rhodium or iridium compounds with halogens or halogen containing substances as promotors are used in the preparation of monocarboxylic acids or esters by reacting carbon monoxide with an alcohol or halide (see Division C2). The catalyst may be in solution (liquid phase operation) or solid (vapour phase operation). The halogen may be present as a salt or co-ordination compound of the rhodium and iridium or supplied as hydrogen, alkyl, aryl, metal, ammonium, phosphonium, arsonium and stibonium halides. Inert supports such as alumina, activated carbon, clays, silica-alumina ceramics are used. Examples describe the use of rhodium chloride, [Rh(CO) 2 Cl 2 ) 2 , [Ir(CO) 2 Cl] 2 , [Rh(CO) 2 Br] 2  and Rh(PÏ 3 ) 3 Cl with hydrogen iodide as promotor, Rh(P° 3 ) 2 CoCl with methyl iodide and Rh(NO 3 ) 3 .2H 2 O with calcium iodide as promotor, and the preparation of iridium chloride with hydrogen iodide supported upon activated carbon.
Patent GB-900304-A (GB)
Title: Improvements in or relating to towable air targets
IPC: B64D5/00
Filed: 1959-12-02
Abstract: 900,304. Towed aerial targets. BULOW, K. O. Dec. 2, 1959 [Dec. 2, 1958], No. 40985/59. Class 4. A towable air target adapted to be towed by an aircraft by means of a towing cable comprises a body provided with at least one airtight chamber and means for filling said chamber with gas during towing flight from a source of gas under pressure carried by said aircraft. A towing aircraft 1 has provision within its fuselage for an uninflated target 9 which has a conical nose 10 of hard material formed with helical ledges 13 and attached to a plastic covering which, when inflated, forms the envelope 8. Four fins are provided, each comprising an outer covering filled with foam plastic. A radar reflector 3 comprising a plastic cloth having a wire net woven into it, is contained within the main body of the target. The nose 10 is connected by a swivel (not shown) to a towing cable 5 which passes over a roller 6 to a drum 14 mounted within the fuselage and is connected also by a high pressure hose 4, a pressure relief valve and a coupling 15 to a compressed gas cylinder 7 also mounted in the fuselage. In operation, the target is paid out by cable 5 just clear of the fuselage as shown by dotted lines, where it is filled with compressed gas. Coupling 15 is then released and the target paid out to the full extent of cable 5 about which it is caused to rotate by the action of airflow on the helical ledges 13. When the aircraft is climbing the pressure relief valve ensures that the correct ratio of internal pressure in the target to ambient pressure is maintained. In a further embodiment the target is housed within a container attached to the wing.
Patent GB-1118296-A (GB)
Title: Process for polymerization of ethylene and/or propylene
IPC: C08F10/00
Filed: 1965-09-28
Abstract: Solid crystalline polymers of ethylene and/or propylene having an inherent viscosity in tetralin at 145 DEG  C. of at least 0.1 are made by effecting the polymerization of the monomers in the presence of a solid stereospecific catalyst, and a compound that does not polymerize during the reaction to a solid and is selected from (1) RCH=CHR, (2) R2C=CHR, or (3) R2C=CH2 where R is an alkyl radical. The compound may be separated from the polymer after polymerization. Exemplified compounds are 2-methyl-pentene, and 2-butene.  The exemplified catalyst is ethyl aluminium dichloride, TiCl3, and hexamethyl phosphoric triamide. The polymerization conditions are conventional.
Patent GB-1151826-A (GB)
Title: Fluid Valve Assembly.
Inventor: GILBERT RONALD ALBERT
IPC: G21D1/02
Filed: 1967-08-30
Abstract: 1,151,826. Valves. ROLLS-ROYCE Ltd. 30 Aug., 1967, No. 41129/67. Heading F2V. Valve for very high temperatures and pressures, e.g. for nuclear reactors, comprises a valve member 13 which under uniform temperature conditions throughout the valve is gripped tightly by an interference fit with a part 11 of the conduit 10 which forms a seat. This prevents any substantial leakage of fluid in closed position. To enable the valve to be opened and closed, coolant fluid such as helium is blown through the hollow interior 22 of the valve disc member 21 by means of hollow trunnions 15, 16 which support the valve member and by which it is rotatable about an axis passing through the plane of the disc. The shrinkage of the disc frees it for rotation.
Patent GB-888285-A (GB)
Title: Improvements in and relating to printing cylinders
IPC: B41F27/02
Filed: 1959-12-03
Abstract: 888,285. Permanent magnets. DEUTSCHE EDELSTAHLWERKE A.G. Dec. 3, 1959 [Dec. 27, 1958], No. 41150/59. Addition to 875,645. Class 35. [Also in Group XVI] A printing-cylinder for supporting a magnetizable flexible stereoplate comprises a shaft 1, three rings 2, secured thereto by taper keys 3 and having peripheries 5 of dove-tailed shape to receive a series of soft iron bars 6, each bar having permanent magnet plates 7, adhesively affixed thereto, and end rings 8 which are shrunk on extensions 4 of the two end rings 2. The bars 6 are suitably spaced apart to form a cylindrical surface, and so that a sequence of poles of alternating polarity in the peripheral direction will be formed. The cavities between the bars 6 &c. may be filled with a plastic material or a metal of low melting- point. The magnet elements are constructed as described in the parent Specification.
Patent GB-890620-A (GB)
Title: Means for preventing too low an excitation of voltage regulated synchronous generators
IPC: H02P9/10
Filed: 1959-12-04
Abstract: 890,620. Voltage control systems. ALLMANNA SVENSKA ELEKTRISKA A.B. Dec. 4, 1959 [Dec. 6, 1958], No. 41219/59. Class 38 (4). A circuit for preventing the excitation of a synchronous generator 1, 2 falling below a staple value comprises an exciter 3 whose shunt field winding 4 is in series opposition with a generator armature 5 energized by two opposing field windings 6, 7, winding 7 being supplied through a rectifier 8 and transductor 9, 11, 12 from a potential transformer 10 connected across supply lines R, T. Another rectifier 16 supplies the transductor control winding 12. The circuit described so far reduces the winding 2 current for an increase in R, T voltage. The transductor control winding 12 is alternatively fed by a rectifier 17 controlled by a self-excited transductor 35 whose control winding is fed by voltages derived from voltage and current transformer 18, 21 and passed through a phasesensitive circuit arranged so that the current in winding 2 is adjusted to maintain the induced generator voltage at a constant phase angle, 90 degrees being proposed in the embodiment described. The transductor winding 12 is fed, by means of rectifiers 13, 14, from whichever rectifier 16 or 17 is developing the lower voltage, thus maintaining the generator voltage above the unstable limit.
Patent GB-1088971-A (GB)
Title: Fluid flow control valves
Inventor: LEE DENIS ERNEST
IPC: F16K15/14
Filed: 1964-10-09
Abstract: 1,088,971. Valves. JOSEPH LUCAS (INDUSTRIES) Ltd. Nov. 22, 1965 [Oct. 9, 1964], No. 41237/64. Heading F2V. A check valve for use in the human heart comprises a plurality of nested ring-like members 10-14 of descending sizes, each member having a generally V- shaped cross-section to define a concave external surface and a convex internal surface. When the valve is closed, the outer edge of a smaller member is in sealing engagement with the convex surface of the adjacent larger member. When the valve is open, the members all lie in substantially the same plane, their movement being restricted by bars 15 across the largest member 10. A member 16 may close the orifice of the smallest member. The members are preferably formed of a synthetic resin or other non-toxic material having a density approximately the same as blood.
Patent GB-845400-A (GB)
Title: Improvements relating to food slicing machines
IPC: B26D1/143
Filed: 1958-12-22
Abstract: 845,400. Slicing machines. TALGE, H. J. Dec. 22, 1958 [Jan. 2, 1958], No. 41324/58. Class 28(2). The slice thickness gauge plate 16 is automatically and releasably locked in a predetermined position. This can be used as a safety device when the gauge plate is screwed into a position co-planer with the knife edge whereby the edge is protected from cutting e.g. children's fingers. The gauge plate 16 is mounted on a sleeve 24 with internal threads whereby hand rotating of a screw 27 effects adjustment. The sleeve 24 is provided with a groove into which slips the lower edge of a hole in a spring pressed sliding locking plate 33. To release the plate 33 is depressed to free the sleeve 24.
Patent GB-1204647-A (GB)
Title: Improvements in plant protectors
Inventor: RASMUSSEN JOHN ERLING
IPC: A01G13/00
Filed: 1969-08-20
Abstract: 1,204,647. Plant pot. J. E. RASMUSSEN. 20 Aug., 1969 [12 Sept., 1968], No. 41449/69. Heading A1E. [Also in Division A4] A plant pot or plant protector, comprises a cup shaped container made from a single transparent or partly transparent plastics sheet. The plant pot 2 may be placed directly in the container. The top of the container is in an inclined plane to the horizontal and a handle 7 is provided to enable it to be carried. A slitted disc 8 is provided to cover the soil.
Patent GB-1179349-A (GB)
Title: Improvements in or relating to Optical Systems
Inventor: SNITZER ELIAS
IPC: G02F2/00
Filed: 1967-09-13
Abstract: 1,179,349. Optical apparatus. AMERICAN OPTICAL CORP. Sept. 13, 1967, No. 41779/67. Heading G2J. [Also in Division G1]. In an optical heterodyne system the wavefronts of the interfering beams are made accurately parallel by passing the beams through a waveguide which supports only one mode or a plurality of modes one of which may be subsequently selected. Beams from HeNe gas lasers 11, 12 operating at slightly different frequencies near the 6300Š line are directed by a beam splitter 15 and a reversed microscope objective 20 on to a waveguide 19. The waveguide comprises a 2 micron diameter filament 21 of refractive index 1À54 surrounded by cladding 22 of refractive index 1À52. The guide is surrounded by black glass of refractive index greater than 1À52. The waveguide supports and aligns the HE11 of the two beams and the light leaving the waveguide falls on a photo-multiplier feeding the circuit tuned to the difference frequency of the beams. The waveguide may be of parallel layers instead of concentric cylinders, in which case mode selection takes place in only on direction. If the waveguide supports more than one mode, one mode may be selected by relying on the fact that different modes leave the waveguide at different angles to the axis. The beams need not be coherent one need not even be monochromatic.
Patent GB-1529688-A (GB)
Title: Circuit arrangement for phase-alignment of a servo-drive for a rotary system
IPC: G05D3/12
Filed: 1975-10-13
Abstract: 1529688 Automatic control of speed PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 13 Oct 1975 [16 Oct 1974]  41812/75 Heading G3R The speed of a rotary member is controlled according to the phase comparison of actual speed pulses with reference pulses. The actual and reference pulses are also fed to a bi-stable multi-vibrator that controls a gate in the path of each pulse train. If two actual pulses occur between two consecutive reference pulses, the gate in the actual pulse path is opened so as to modify the comparator output. Similarly if two reference pulses occur between two actual pulses, the other gate is opened. As shown, actual pulses from a magnetic pickup 6, 7, 8 are phase compared at 10 with reference pulses from generator 9, the comparator output controlling an eddy current brake 12 or the excitation of drive motor 3 so as to regulate the speed of member 2. Gates 18, 21 are each controlled by a separate bi-stable multi-vibrator 26, 27 one gate output being inverted before addition at 22 to the other gate output, to modify the error correction signal from comparator 10. If, for example, reference pulses arrive first, multivibrator 27 opens gate 21. If the next pulse is also a reference pulse, it passes through the now open gate 21 to modify the comparator output. This continues until the next actual pulse, which closes gate 21. Similarly, if an actual pulse arrives first, followed by a plurality of reference pulses all but the first reference pulse are passed by gate 21 to modify the correction, until the next actual pulse. In other embodiments, (not shown), a single multi-vibrator is used to control both gates, and the actual or reference pulses to the gates 18, 21 are blocked upon sensed coincidence of these pulses.
Patent GB-1161582-A (GB)
Title: Transmission woth Improved Overrun Lockout
IPC: F16H63/30
Filed: 1966-12-16
Abstract: 1,161,582. Ratchet clutches; change-speed gears. MASSEY-FERGUSON Inc. 16 Dec., 1966 [23 Dec., 1965], No. 41958/68. Headings F2C and F2D. The vehicle transmission shown in Fig. 1 of Specification 1,105,443 has its ratchet clutch replaced by one similar to those disclosed in Specification 1,161,581. In a modification (Fig. 3, not shown) the driven part of the ratchet clutch, instead of being directly helically splined to the output shaft, is splined to a cylinder which is fast with the output shaft. Reference has been directed by the Comptroller to Specification 1,105,443.
Patent GB-1201932-A (GB)
Title: Improvements relating to methods of operating spark ignited internal combustion engines and to internal combustion engines so operated
IPC: F02B75/12
Filed: 1967-09-15
Abstract: 1,201,932. Combustion chambers. DAIMLERBENZ A. G. Sept.15, 1967 [Sept.15, 1966], No.42109/67. Heading F1B. A recess 6 on the piston head diverts the last portion of injected fuel from injector 8 as a concentrated jet towards an igniter 9. The combustion chamber 3 may be in the piston or the cylinder head. The commencement of injector is advanced with increasing amount of injected fuel and the end of injector is either constant or controlled independance on engine speed.
Patent GB-1447545-A (GB)
Title: Contact material for circuit breakers
IPC: H01H1/025
Filed: 1973-09-07
Abstract: 1447545 Copper alloy INSTITUT PRUFFELD FUR ELEKTRISCHE HOCHLEISTUNGSTECHNIK 7 Sept 1973 [26 Oct 1972] 42310/73 Heading C7A A copper based alloy contains Mg 0À4-20 Sb 0À4-35 Cu Bal plus impurities and has a hardness of 93-276 kp/mu<SP>2</SP> and an electrical conductivity of 4À9-7À7 m/Ohm mu<SP>2</SP>, and is suitable for a contact material in vaccum switches and spark gap applications, having a high electrical conductivity, good mechanical strength and resistance to electrical welding, and good dielectric strength. The alloy can be made by normal casting techniques or by powder metallurgical processes or by infiltration into metallic or non metallic skeletons for use as a contact material.