baber/WOPTO huggingface dataset:
Patent GB-1176019-A (GB)
Title: Method of and Apparatus for Measuring Lengths by Optical Interferometry.
IPC: G01D5/26
Filed: 1967-08-09
Abstract: 1,176,019. Interferometers. SOC. GENEVOISE D'INSTRUMENTS DE PHYSIQUE. Aug. 9, 1967 [Aug. 9, 1966], No.36648/67. Heading G2J. An interferometer comprises means for deviating or diffracting light from a laser 1 and directing it on to a fixed semi-transparent mirror 3 which divides the incident beam into a reflected beam I and a transmitted beam II, a mirror assembly consisting of a mirror 5a arranged parallel to the mirror 3 and a mirror 5b perpendicular thereto the mirror assembly being movable in the direction of measurement and being positioned so that the transmitted beam II is first incident on the mirror 5a and then reflected back by the mirror 5b to be redirected, together with the beam I, by further diffracting means which renders the two beams parallel, and an optical system 6 for focusing the beams I, II on to a photo-detector 7 to which is connected an additive-subtractive electronic counter 8. In Fig. 1, both diffracting means are provided by different parts of one difffraction grating 2. In a second embodiment, Fig. 2 (not shown), the first deviation means is a prism and the second diffraction means is a grating. A glass plate 4 may be positioned in the reflected beam I to compensate for modification of the optical path of the beam II of passage through the mirror 3.
Patent GB-885548-A (GB)
Title: Process for isolating acrylonitrile by distillation
Filed: 1959-10-28
Abstract: <PICT:0885548/III/1> Acrylonitrile is isolated from a hot gaseous mixture containing also hydrocyanic acid, acetaldehyde, acetonitrile, propionic nitrile and higher boiling nitriles, such as may be obtained by the catalytic dehydration of lactonitrile, by washing the hot mixture with water in a washing tower 2 and passing the resultant solution into a stripping column 8 heated at its base to about 100 DEG C. and supplied at the top with water at a temperature up to 70 DEG C.  Only the acetonitrile is washed out of the vapour stream ascending the column 8, the remaining vapour containing the acrylonitrile and all the impurities except acetonitrile being condensed in a condenser 11, the condensate from which separates into an upper phase 13, from which acrylontrile is obtained by distillation in known manner, and a lower, aqueous, phase, 12, which is returned to the stripping column.  The column 8 may be heated directly by steam introduced at 9.  The water supplied to the top of the column 8 may be obtained by branching off at 25 some of the aqueous acetonitrile washed out of the column at 14, the acetonitrile being expelled by steam from the column 15 and the water returned by line 10 from cooler 17.  All the acetonitrile may be recovered in this way from line 16 if no aqueous acetonitrile is withdrawn by line 18.  Part of the aqueous acetonitrile from line 14 may also be recirculated by line 27 to heat exchangers 4 and 5 and thence to washing tower 2 which it enters at 20 DEG -30 DEG C., the aqueous solution leaving tower 2 by line 7 reaching about 85 DEG C. in heat exchanger 4.  If lactic nitrile is present in the gaseous mixture its loss from the system may be avoided by heating column 8 and if desired column 15, by indirect heat exchange with steam.  This avoids the necessity of having to remove excess water resulting from condensation by lines 18 and 19; if, however, column 15 is heated by indirect exchange an amount of additional water equal to that carried over with the acetonitrile in line 16 is added to water entering cooler 17. Specifications 719,911 and 802,114 are referred to.
Patent GB-1161782-A (GB)
Title: Improvements in Semiconductor Devices.
Inventor: FOXELL CLIVE ARTHUR PEIRSON
IPC: H01L23/482
Filed: 1965-08-26
Abstract: 1,161,782. Frequency changes. ASSOCIATED SEMICONDUCTOR MFGS. Ltd. 24 Aug., 1966 [26 Aug., 1965], No. 36655/65. Heading H3T. [Also in Division H1] A Gunn diode 22 having both its terminals on the same plane surface (see Division H1) is used as the local oscillator in a frequency changer circuit. The other components of the circuit are the input signal connection 33, an I.F. transformer 34-37 and a pair of Shottky barrier diodes 41, 42 connected to the output conductor 44. The circuit is in the form of an integrated circuit having a substrate 21 on the lower surface of which there is a chromium and gold layer forming a microstrip transmission line.
Patent GB-1163542-A (GB)
Title: Lipstick containers
Inventor: FUGLSANG-MADSEN ERIK
IPC: A45D40/06
Filed: 1966-08-17
Abstract: 1,163,542. Lipstick containers. SEBEC S.A. 17 Aug., 1966 [31 Aug., 1965], No. 36772/66. Heading B8P. A lipstick container wherein the lipstick 64 is raised by rotating part 16, is distinguished by its refill unit which comprises a transparent slip on shell 50 which spigots on to the lipstick carrier 56, into which lipstick 64 is fitted. The refill unit is fitted by being pushed down into the position shown, the flexible lip of the flange 42 yielding to allow the passage of the shell 50 and the teeth 24 yielding to allow the ring 66 to pass and engage them. The shell 50 is removed by raising the lipstick pushing the shell 50 through the flange 42 and then lowering the lipstick when the shell 50 catches on the flange 42 thereby breaking the frictional grip on the carrier 56. The shell 50 can be pushed back manually and the carrier 56 can be released by lowering the slide 22 further to disengage the ring 66 and the teeth 24. In an alternative embodiment, Figs. 3 and 4 (not shown), the lower end of the shell 50 may have its lower end flared out and resilient, and also the lower end 59 of the carrier 56 may be removed below the teeth 24 and replaced by a plunger (102) connected through the end 14 to a pushbutton (98) which when pressed upwardly, compressing a spring (100), disengages the carrier 56 from the teeth 24.
Patent GB-1294060-A (GB)
Title: Detachable type levers
Inventor: DEEG REINHARD
IPC: B41J7/24
Filed: 1971-08-05
Abstract: 1294060 Typewriters &c INTERNATIONAL STANDARD ELECTRIC CORP 5 Aug 1971 36832/71 Heading B6F In a type-lever printing mechanism wherein the type-levers 1 are pivoted on a common axle 3 and are individually removable by means of a slot in each type lever leading to a bearing hole 1a, the slot 1b is curved and of increasing width towards the outer edge of the lever, and the axle 3 is of generally circular crosssection with a flat surface 3a amd a diametrically opposite concavity, 3b extending along its length. As shown, the axle 3 is annular and is fixed to a disc 2 continuously rotating about a vertical axis below a platen 4, the type-levers 1 being guided in radial slots in the disc.
Patent GB-1275248-A (GB)
Title: Improvements in or relating to circuit arrangements for compensating for the d.c. voltage component occurring in the demodulation of frequency-switched signals
IPC: H04L27/14
Filed: 1970-07-30
Abstract: 1275248 Frequency shift digital transmission systems SIEMENS AG 30 July 1970 [31 July 1969] 36895/70 Heading H4P Fortuitous D.C. bias at the output of a demodulator in a frequency shift system is compensated by applying the demodulator output Ud to the inputs of first and second differential amplifiers DV1, DV2, the output of the first amplifier DV1 being connected to a limiter amplifier B1 the output of which is connected to the second amplifier DV2 the output from which is connected to the input of DV1 through a delay element G1. This input is equal and opposite to the fortuitous bias. In a modification negative feedback is derived across the antiphase input and output of amplifier B1 by means of a voltage divider R1, R2 through a delay element G2. Fig. 3 (not shown) illustrates an arrangement where two mutually independent transmissions are combined in a single channel embracing four switching frequencies. A separator circuit (KT) connected across B 1 feeds into a limiter amplifier B2 which reproduces one channel V2 the other channel V 1 being derived from B1. The channels are summed in a specific ratio in an adding element A and applied to the second input of DV2. The amplitudes Uv, Ud should be equal and cophasal. Low pass filters must not be used in this arrangement but may be used in series with the channel outputs V1, V2.
Patent GB-1098335-A (GB)
Title: Projector having electrical actuating switches
IPC: G03B23/00
Filed: 1966-08-18
Abstract: 1,098,335. Slide projectors. FRANKE & HEIDECKE G. m. b. H. Aug.18, 1966 [Nov. 23, 1965], No. 36987/66. Heading G2J. A slide projector has a manual switch 1 whose keys 3, 4 electrically control slide-changing and lens focusing, the switch being permanently attached to the projector by cable 2 and being detachable from a clip holder beneath housing 5 for use as a remote control switch.
Patent GB-851400-A (GB)
Title: Improvements relating to gas-turbine blades
Inventor: TURNER PHILIP GEORGE
IPC: F01D5/28
Filed: 1956-12-04
Abstract: 851,400. Making turbine blades. WIGGIN & CO. Ltd., H. Dec. 4, 1957 [Dec. 4, 1956], No. 37049/56. Drawings to Specification. Class 83(2). [Also in- Group XXVI] In a gas turbine blade, the trailing edge of the blade is cooled by a molybdenum insert which lies partly within the trailing edge and partly in an adjacent longitudinal cooling passage inside the blade. The molybdenum has a higher thermal conductivity than the blade and conveys heat to the air flowing in the cooling channel. To prevent oxidation, the molybdenum is coated with electro-deposited nickel. The blade is formed by the extrusion of a billet in which one of the cooling channels is filled with a molybdenum rod and the remaining channels contain a filler which is leached out by acid after extrusion.
Patent GB-1028808-A (GB)
Title: Process for the preparation of methacrylate compounds
IPC: C07C67/327
Filed: 1964-09-10
Abstract: Methacrylic acid, and esters and amides thereof are prepared by reacting a -hydroxy-isobutyric acid at from 180 DEG  to 320 DEG  C. with a carboxylic acid not decarboxylated under reaction conditions and with a boiling-point above 180 DEG  C. and/or an ester, anhydride, chloride, amide or imide thereof.  Monobasic acids, e.g. stearic and palmitic acids or dibasic acids, e.g. succinic, glutanic, maleic and itaconic acid and preferably phthalic acid, and their esters, anhydrides, chlorides, amides and imides may be used.  A liquid phase reaction, in for example an inert medium with a basic catalyst such as oxides, hydroxides, and carbonates of alkali or alkaline earth metals or alkali metal acetates and tert.-amines, and with inhibitors may be used.
Patent GB-1429807-A (GB)
Title: Vehicle windscreen wiper assemblies
IPC: B60S1/36
Filed: 1973-08-06
Abstract: 1429807 Windscreen wipers CHRYSLER UNITED KINGDOM Ltd 6 Nov 1974 [6 Aug 1973] 37217/73 Heading A4F In a vehicle windscreen wiper assembly comprising an angularly oscillatable wiper arm carrying a wiper blade means is provided for extending and retracting the arm as it is oscillated to vary the distance of the wiper blade from the axis of oscillation of the arm during its sweep. During wiper operation a wiper motor (not shown) drives via gearing 29, 28 a rotary cam 27 to actuate a piston 26 in a cylinder 25 coupled by flexible hoses 23, 20 and the hollow wiper spindle 12 to a tubular portion 15 of the wiper arm 10 containing a piston 19. The latter is moved by hydraulic fluid disposed between the pistons together with a rod 17 carrying the wiper blade 16.
Patent GB-1159760-A (GB)
Title: Novel Process for Preparing 3,4-Dicarboxy-1,2,3,4-Tetrahydro-1-Naphthal enesuccinic Dianhydride.
Inventor: DILEONE ROLAND RALPH
IPC: C08G63/137
Filed: 1966-03-08
Abstract: 1,159,760. Dicarboxytetrahydronaphthalenesuccinic dianhydride. AMERICAN CYANAMID CO. 8 March, 1966, No. 37552/67. Divided out of 1,137,086. Heading C2C. [Also in Division C3] 3,4 - Dicarboxy - 1,2,3,4 - tetrahydro - 1 - naphthalene-succinic dianhydride is prepared by reacting styrene and maleic anhydride in an atmosphere of nitric oxide. An inert organic liquid which is a solvent for the reactants but not for the product may be added during the course of the reaction.
Patent GB-849791-A (GB)
Title: Polyurethanes and coating compositions containing them
IPC: C08G18/12
Filed: 1958-11-21
Abstract: A process of preparing a polyurethane reaction product particularly adapted for use in a coating composition, comprises reacting (a) 1 mol of polypropylene glycol having a molecular weight of about 500 to 3000 or a mixture thereof with polyethylene glycol or polybutylene glycol containing at least 85 mol per cent of polypropylene glycol, (b) 0-1 mol of saturated aliphatic diol containing 2-6 carbon atoms per molecule, (c) 0,5-4,0 mols of saturated aliphatic triol containing 3-6 carbon atoms per molecule and (d) organic diisocyanate in an amount sufficient to provide 1,5-2,4 isocyanate groups for each hydroxyl group provided by components (a), (b) and (c), in the presence of at least 0,003% by weight based on said diisocyanate of chlorine in the form of a compound which produces chloride ions and is acidic in water.  The polypropylene glycol preferably has a molecular weight of 800-1500.  Suitable diols and triols and diisocyanates (aromatic, aliphatic and cycloaliphatic) are mentioned. The compound producing chloride ions are carbamyl chlorides (which may be present as impurity in the polyisocyanates) acyl chlorides, hydrogen chloride, phosgene, benzoyl chloride and o-chlorobenzoyl chloride.  The reaction can be effected in solution in, for example, methyl isobutyl ketone, ethyl acetate, other polar solvents, aromatic hydrocarbons such as toluene or xylene or aliphatic hydrocarbons such as hexane and mineral spirits.  An amine such as triethylamine, diethyl cyclohexylamine, dimethyl dodecylamine, dimethyl octadecylamine, dimethyl stearylamine or dimethyl coco-amine may be present during the reaction or may be added to the product obtained, to shorten the drying time. Heating and introduction of steam can also be used for this purpose.  Other suitable additives are metal oxides, sulphides, sulphates, silicates and chromates, metal powder or flake, carbon black, iron blues and organic dyestuffs and their lakes.
Patent GB-510778-A (GB)
Title: Method of manufacturing materials and work pieces of mineral wool and a hydraulic binding medium
IPC: C04B28/02
Filed: 1938-12-30
Abstract: 510,778. Compositions containing mineral wool. DEUTSCHE EISENWERKE AKT.- GES. Dec. 30, 1938, No. 37833. Convention date, Dec. 31, 1937. [Classes 22 and 70] A composition of mineral wool and a hydraulic binder such as cement or lime is made by forming a suspension of the mineral wool, in the form of short fibres, in a large quantity of water and then adding the binder, preferably also in the form of an aqueous suspension. In an example one part by weight of mineral wool is suspended in 10 or 15 parts of water and to them is added a suspension of from one-third to 10 parts of cement, made by adding 70 to 100 per cent. of water to the cement. The further treatment may be effected in the manner known in' connection with the manufacture of asbestos cement products, or the suspension may be dewatered and the resulting plastic composition moulded or otherwise shaped. Light filling materials such as foamed slag, slag sand, pumice sand, and asbestos fibres may be added, and the material may be reinforced by wire netting, pieces of wire or iron filings. The formed articles may be hardened or waterproofed by impregnating with waterglass, waterproofing solutions, or tar or asphalt compositions, or by treatment with gases containing carbon dioxide, or with superheated steam. In a modification a suspension of mineral wool is used to mix ordinary mortar or concrete. The suspension may be partially dewatered before adding it to the mortar or concrete.
Patent GB-1042673-A (GB)
Title: Arc welding gun
IPC: B23K9/28
Filed: 1963-09-26
Abstract: 1,042,673. Welding by fusion. WESTINGHOUSE ELECTRIC CORPORATION. Sept. 26, 1963 [Oct. 16, 1962], No. 37881/63. Heading B3R. An arc welding gun comprises a guide tube EA for a consumable electrode surrounded by and spaced from a cooling jacket consisting of inner and outer concentric shells 25, 27, the heat transmission from the guide tube to the cooling jacket being in large measure by radiation. The guide tube is a tube 51, e.g. of copper having a liner 53, e.g. of stainless steel. A contact tip ET is detachably secured by a collet 87 to the guide tube EA. The shells 25, 27 are brazed to brass or copper headers 21, 23 at each end and are connected to a cooling water inlet 48 and outlet 52. The cooling jacket is mounted on insulating bushes on the guide tube EA. A copper shielding gas nozzle N having a ceramic liner 91 is threaded on to the header 23. Shielding gas is passed to the nozzle N through the space between the inner shell 27 and the guide tube EA. The cooling water outlet 52 contains an insulating section 117 and passes through a block 55 brazed on the guide tube EA.
Patent GB-935688-A (GB)
Title: Improvements relating to non-linear amplifier circuits for use in television
Inventor: QUILTER LINSELL GEORGE
IPC: H04N5/202
Filed: 1958-11-26
Abstract: 935,688. Valve non-linear circuits. ELECTRIC & MUSICAL INDUSTRIES Ltd. Nov. 26, 1959 [Nov. 26, 1958], No. 38033/58. Drawings to Specification. Class 40 (6). The non-linear circuit of Specification 702,325 in which the gain increases as the signal level decreases, is modified by the provision of a capacitor connected across the common cathode impedance so that the change in gain is less at the higher frequency end of the amplifier's range. The circuit is further modified by the provision of an output network having a transfer characteristic which is less for relatively high frequencies. Transistors may be used in place of valves. Specifications 449,242 and 702,359 also are referred to.
Patent GB-1192216-A (GB)
Title: Grafted Copolymers
Inventor: HARDT DIETRICH
IPC: C08F263/04
Filed: 1967-08-18
Abstract: 1,192,216. Grafted ethylene-vinyl acetate copolymers. FARBENFABRIKEN BAYER A.G. 18 Aug., 1967 [23 Aug., 1966], No. 38199/67. Heading C3G. An ethylene-vinyl acetate copolymer is grafted with from 1À5 to 20 parts by weight of a mono-olefin containing from 2 to 4 carbon atoms and 98À5 to 80 parts of vinyl chloride. Other graft monomers, in amount up to 10% by weight of the vinyl chloride, may also be employed. In Examples 1 to 3, a bead polymer is produced by suspending a solution of the base copolymer and azodiisobutyronitrile in vinyl chloride and isobutylene in an aqueous medium containing methyl cellulose and polymerizing the monomers. The graft monomer mixture in Example 4 also contains vinyl acetate. In Examples 5 and 6, propylene and ethylene, respectively, are employed in place of the isobutylene in Example 1.
Patent GB-1018447-A (GB)
Title: Improvements in or relating to copolymer products
IPC: C08G2/20
Filed: 1964-09-18
Abstract: A mixture of 99 to 30 mol. per cent chloral and 1 to 70 mol per cent dichloracetaldehyde is polymerized directly into an article by mixing in a reaction chamber the monomer mixture and a polymerization catalyst, withdrawing from the reaction chamber this flowable reaction mixture charging it to a forming means, polymerizing the mixture supported by the forming means, and removing, washing and drying the product.  The catalyst may be an anionic organometallic compound or a complex thereof e.g. diethyl or di-n-butyl zinc, while an inert organic liquid medium may be present. The monomer mixture may be partially polymerized in the reaction chamber and polymerization completed on a solid substrate in a second reaction chamber.  The process may be continuous.  Apparatus for carrying out the process is described.
Patent GB-1106030-A (GB)
Title: Improvements in or relating to stirring elements for food mixers
IPC: A47J43/07
Filed: 1966-08-26
Abstract: 1,106,030. Food mixers. PHILIPS GLOEILAMPENFABRIEKEN N.V. 26, Aug., 1966 [31, Aug., 1965], No. 38305/66. Heading B1C. A food mixer has stirrer elements each comprising an L-shaped strip one end of which is secured to a rotatable shaft such as 1 as at 8 and the corresponding arm 7 bent to a curve so that the corner 5 returns below the secured end, the other arm 4, 11 also being bent to form a second curve at right angles to the first arm about a common centre; the mixer may as shown have two such counterrotating and inter-meshing stirrers.
Patent GB-1477631-A (GB)
Title: Structural assemblies such as furniture joints
IPC: A47B17/00
Filed: 1973-07-22
Abstract: 1477631 Desks PARNALL & SONS Ltd 22 July 1974 [14 Aug 1973 (2)] 38387/73 and 38388/73 Heading A4H [Also in Division F2]  A furniture assembly such as a desk having a top 10, a pedestal 12, a modesty board 9 and legs 11 has the top 10 provided with a pair of parallel battons 13 on its underside and the pedestal provided with cross-members 14; the members 13, 14 serving to position the members 10, 12 in alignment and having aligned apertures to receive flexible rods 16 which are releasably sprung into position to inter-connect them. The modesty board may likewise be positioned by flexible rods 22 and secured to the legs by bolts or screws 25; the legs in turn being hinged to the desk top. The rods 16, 22 may be made of plastics, wood or metal or consist of a coiled flexible metal element. The rod may be additionally secured by a crosspin or recessed to receive a clip.
Patent GB-1517950-A (GB)
Title: Sensors
IPC: G01N27/403
Filed: 1975-09-19
Abstract: 1517950 Multifunctional electro-chemical probe GENERAL ELECTRIC CO 19 Sept 1975 [1 Nov 1974] 38506/75 Heading G1N An electro-chemical probe comprises a membrane sensor responsive to either CO 2  or O 2  and an ionselective electrode. A flexible central electrode 12 has an active portion 13 at one end. This lead is insulated from and at least partially surrounded by a second electrode 15 having an extensive active region 16 of silver/silver halide. Electrolyte 17 surrounded by CO 2  or O 2  permeable membrane 18 surround active portion 13 of electrode 12 and part of the silver/ silver halide. Another part of the silver/silver halide is covered by an ion-selective membrane 19. The membranes together form a continuous cover for the probe. The ion-selective membrane may be selective to H<SP>+</SP>, K<SP>+</SP> or Ca<SP>++</SP>, suitable materials being disclosed. For a CD 2  sensor, the lead 12 may be iridium or palladium with an active layer 13 of the corresponding oxide. The electrode 15 may be silver or gold coated with silver and the halide chloride, bromide or iodide. The electrolyte contains sodium chloride and sodium bicarbonate and is immobilized. The membrane may be a poly siloxy poly carbonate block copolymer. Insulation 14 in the sensor may be a hexafluoropropene-vinylidene fluoride copolymer, polyester, silicone or polypropylene oxide.