baber/WOPTO huggingface dataset:
Patent GB-1281844-A (GB)
Title: Method of separating allergenic material
Inventor: MULLAN NOEL AUSTIN
IPC: A61K39/36
Filed: 1970-04-11
Abstract: 1281844 Purifying allergens BEECHAM GROUP Ltd 19 April 1971 [11 April 1970] 17331/70 Heading A5B Proteinaceous allergens are obtained in purer form by extracting the source material, e.g. a plant, pollen dust, mould or fibre or an extract thereof with aqueous phenol at 50- 100‹C, separating the phenolic fraction of the extract and precipitating the allergen e.g. by addition of an anti-solvent such as methanol or acetone. Various allergens are mentioned, the specific example relating to cocksfoot pollen.
Patent GB-500162-A (GB)
Title: Improvements in or relating to radio antennae
IPC: H01Q9/26
Filed: 1938-06-10
Abstract: 500,162. Aerials ; directive wireless signalling. SOC. ANON. DES INDUSTRIES RADIO-ELECTRIQUES. June 10, 1938, Nos. 17335 and 17336. Convention dates, June 10, 1937 and June 8, 1938. [Class 40 (v)] To maintain a constant impedance over a range of short wavelengths, the ordinary dipole aerial is replaced by two parallel wires A C E F D B closely spaced, and joined together by a surge impedance 6, which absorbs energy without reflection. Thesystemis then the seat of progressive waves which travel in the direction indicated by the arrows 5 through the feed-lines and aerial, and give an omni-directional radiation field equivalent to that of a single dipole. But as regards feed, the impedance remains constant for different frequencies. Fig. 4 shows a similar aerial of the quarterwave type. In Fig. 7, the same arrangement is applied to a " spaced " dipole system giving a directional response, which will respond to a,wide range of wavelengths, and is not critically sensitive to variations in the dimensions of the wires. This arrangement may be replaced by quarter-wave aerials of the kind shown in Fig. 4. Both may be used to produce navigational beams of the fixed or rotating type.
Patent GB-149942-A (GB)
Title: Improvements in or relating to electric heating apparatus
IPC: A47J27/00
Filed: 1920-06-25
Abstract: 149,942. Malhomme, M. R. Aug. 19, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Heating by electricity.-A vessel of glass, reinforced glass, pottery, porcelain, or other ceramic material, or partly of glass and partly of ceramic material, consists of an inner receptacle B wound with a resistance E and having a flange B<1> secured to an outer receptacle A and sealed by cement C so as to provide an air space between the receptacles and allow free expansion thereof. The inner receptacle may be grooved to receive the resistance. Terminals D are mounted on the outer receptacle, The cover F may be perforated. The vessel may be used for sterilizing and laboratory purposes, for preparing infusions and for vaporizing perfumes.
Patent GB-1028202-A (GB)
Title: Process for the manufacture of ammonium nitrate
IPC: C05C1/00
Filed: 1963-05-02
Abstract: Ammonium nitrate is produced by the reaction of preheated anhydrous ammonia with similarly preheated nitric acid of at least 60% concentration at a temperature between 145 DEG  and 160 DEG  C. and a pressure between 1 and 4 kg. per sq. cm., the heat of neutralization being used to generate water vapour by indirect contact with pure water, part of the water vapour then being used to produce a 95% by weight ammonium nitrate solution by indirect heating of the reaction mixture, the remainder being available for other uses.  Saturator 1 consists of a central chamber 2 and a peripheral chamber 3.  HNO3 and NH3 preheated to 90 DEG  C. <PICT:1028202/C1/1> are introduced by pipes 5, 4 respectively into chamber 2 and undergo exothermic reaction to form NH4NO3. NH4NO3 solution flowing down peripheral chamber 3, passes through vertical pipes, surrounded by pure water which is supplied at 12 and discharged at 13.  Pure water is vaporized, and cooled NH4NO3 solution descends to the base 11 of chamber 3 and is recycled up 2.  The NH4NO3 solution overflowing from the saturator at 14 passes into concentrator 15 which operates under sub-atmospheric pressure produced by steam ejector 17.  The concentrator consists of a bundle of tubes 16 traversed by the water vapour from 9 at 3 kg. per sq. cm. pressure. Evaporation of the NH4NO3 solution produces 95% NH4NO3.  Contaminated water vapour from 15 passes into surface condenser 19 where it may be used to preheat the reagents.
Patent GB-670941-A (GB)
Title: Improvements in or relating to parting bead and sash balance window construction
IPC: E05D13/00
Filed: 1950-07-12
Abstract: 670,941. Windows. STARCK, A M. July 12 1950 [Aug. 25, 1949], No. 17446/50. Class 20(iii) A combined parting - bead and sashbalance comprises an elongated housing 16, 17 forming one side of the channels in which the e sashes 14, 15 slide. The upper portion 16 is rectangular in section and houses coil spring sash - balances 21, 22 having upper and lower caps 23-26. The caps 23, 24 are secured to the housing and the lower caps 25. 26 have slots in which twisted or spiral rods 27, 28 engage. The rods are housed in the lower portion 17 which is of S-section, and the links 31, 32 connecting the rods to the sashes extend through the slots s. The links may be engaged slidably in sockets secured to the sashes whereby the latter may move slightly in their own planes horizontally. Specification 384,534 is referred to.
Patent GB-688146-A (GB)
Title: Improvements in or relating to pressure welding
IPC: B23K20/02
Filed: 1950-07-12
Abstract: 688,146. Jointing; forging dies. GENERAL ELECTRIC CO., Ltd., FOXON, H. J., and SOWTER, A. B. June 29, 1951 [July 12, 1950], No. 17462/50. Class 83 (iv). A stud, bolt, nut, &c. is secured to a pressure weldable member by pressure welding a disc &c. to the member about the insert to trap a shoulder, head, &c. on the insert, at least the member or the disc &c. having an aperture to allow projection of or access of the insert, the welding operation being accompanied by a forging operation to cause metal to flow and key into the insert. In an embodiment, a mild or high tensile steel stud 1, Fig. 3, is passed through a hole in the wall 3 of an aluminium cooking vessel with a square projection 4 against the wall 3. An aluminium disc 5 with a 45 degree taper at its edge is located with a hole 6 therein about the frusto conical head 7 of the stud 1. Both adjacent surfaces on the wall 3 and disc 5 are scratch brushed. The disc 5 is placed on a flat anvil and a tool 17, Fig. 1, is pressed downwardly upon the wall 3, to form an interrupted cold pressure ring weld and to cause the metal to flow and key about the head 4 to form a boss similar to that shown at 2 in Fig. 6. The weld shown in Fig. 6 is produced when a disc which is merely recessed to receive the end 7 of the stud 1 is employed. A handle may be secured upon the boss 2 and stud 1. In a modification a mild steel threaded insert having external projections is used with a perforated disc which is cold-pressure welded to a wall which is not perforated. In a further modification a rod 18, Fig. 10, with a screwed end 19 passed through a hole 20 in a wall 3 is keyed to the wall 3 by a welding operation as described above and the rod 18 may be unscrewed to leave a threaded recess 16, Fig. 11, in the bush 2. It is stated that limited heat may be used in the welding. The Provisional Specification discloses the use of discs with non- chamfered edges.
Patent GB-1140441-A (GB)
Title: Improvements in or relating to bushings
Inventor: LORCH HUGH OLAF
IPC: H01B17/34
Filed: 1966-04-21
Abstract: 1,140,441. Insulating bushings. ENGLISH ELECTRIC CO., Ltd. 18 May, 1967 [21 April, 1966], No. 17512/66. Heading H2C. A bushing for use when making electrical connection with low temperature apparatus 10 includes a tube 16 which passes cryogenic vapour to an insulating duct 20 connected to the outer end of the tube. The tube itself may be conducting, or fine wires or a twisted strip, as in Specification 1,027,933, within the tube may be used as well or instead to make the connection. The duct may run between annuli 18 and 19 of insulation which may be of epoxyresin-bonded paper and porcelain respectively. The tube may be a loose fit in annular insulator 18, the inner surface of which may be conductively coated and connected to the tube. Liquid helium in bath 11 and liquid nitrogen in bath 13 may be used as cryogens.
Patent GB-797501-A (GB)
Title: An electrolytic method for recovering metallic gallium
IPC: C25C1/22
Filed: 1956-06-06
Abstract: 797,501. Electrolytic recovering of gallium. SOC. ANON POUR L'INDUSTRIE DE L'ALUMINIUM. June 6, 1956 [June 13, 1955; May 22, 1956], No. 17524/56. Drawings to Specification. Class 41. A method of recovering metallic gallium from a sodium aluminate lye obtained in the course of the recovery of alumina from aluminium ores comprises the steps of firstly electrolysing the aluminate lye by means of a cathode formed by stirred liquid mercury and of one or more anodes made from a metal which is insoluble under the conditions of the electrolysis, the terminal voltage being at least 3 volts, the cathodic potential at least 1.6 volts and the cement density of the cathode being at least 0.35 amps per square decimeter; secondly, extracting the gallium from the mercury by means of a caustic alkali; and thirdly, electrolysing the solution of alkali gallate obtained in the second operation so as to obtain metallic gallium in the free state. The subject-matter of this Specification is substantially the same as that described in Specification 797,502. Specifications 671,356 also is referred to.
Patent GB-666962-A (GB)
Title: Improvements in or relating to methods of frequency division, especially television and like systems
IPC: H04N5/06
Filed: 1947-07-04
Abstract: 666,962. Television. CINEMA-TELEVISION, Ltd., ELBOURN, R. W., and JOHNSON, L. R. J. July 1, 1948 [July 4, 1947], No. 17673/47. Class 40 (iii). [Also in Group XL (c)] The generation of frame synchronizing signals in a television &c. system is controlled by frequency divided line synchronizing signals by means of a circuit which is adapted to perform a process of frequency division including a division by a non-integral number of the form (2n+1)/2m, where n and m are integers. In one arrangement according to the invention the output of a master oscillator 30 (Fig. 4, Provisional), which operates at line synchronizing frequency and controls directly the generation of line synchronizing signals, is applied to a chain of frequency dividing circuits 32, 33, 34 in which successive division by factors of 9, 5 and 4¢ are respectively performed to supply a signal at frame synchronizing frequency for controlling the generation of frame synchronizing signals in pulse generator 35. A circuit suitable for effecting division by the factor 4¢ is shown at Fig. 1 (Provisional) and comprises a phasesplitting stage 3, the phase opposed outputs from the anode and cathode of which are differentiated by the networks 6, 7, and 8, 9, respectively, and applied through diodes 10a ... 11b to control the operation of a multivibrator circuit including the elements 17, 18 and 15, 17, the time constants of which are so chosen that the circuit completes a cycle of operation in 4¢ cycles of the input signal applied to stage 3 (a, Fig. 2, Provisional)), and so proportioned that valve 12 passes from the inoperative to the operative condition in five half-cycles of the wave a while valve 13 performs this operation in four half-cycles (e, Fig. 2, Provisional). In an alternative arrangement phase-opposed pulses having a repetition rate of 25 per second are derived from a master oscillator (operating at 10,125 c.p.s.) by means of two stages of frequency division (¸15 and ¸27) and the derived pulses are employed to control a pulse generating circuit which produces pulses having a repetition rate of 50 per second (Fig. 5, Provisional, not shown).
Patent GB-1462274-A (GB)
Title: Bearings method of making a multiplicity of multiple-device semiconductor modules and articles so produced
IPC: F16C33/20
Filed: 1974-04-23
Abstract: 1462274 Bearings H TAKEUCHI 23 April 1974 17678/74 Heading F2A A sliding bearing of plastics comprises concentric inner and outer rings 1, 3, an intermediate element 5 idly rotatably accommodated in an annular space 6 therebetween, and a retainer ring 4 fitted in one side of the outer ring 3 to retain the intermediate element in position, the said element including several members 5a of circular section equidistantly spaced apart in a circular arrangement and connector plates 5b interconnecting the members. Each component is integrally moulded of polyacetal or polyamide resin; the resin may contain fluorine. The members 5a may be cylindrical, spherical, or ellipsoidal, and each may contain a hole or a portion of reinforcing material at the centre. The sliding surfaces of the components may be conical (Fig. 4, not shown). The ring 4 may be a snap fit in the ring 3, or it may be welded thereto.
Patent GB-129701-A (GB)
Title: Improvements in and relating to Cartridges for Ordnance.
Inventor: DOWN THOMAS MACREADY
IPC: F42B30/04
Filed: 1917-11-29
Abstract: 129,701. Down, T. M., and Ballantine, W. B. Nov. 29, 1917. Gun cartridges; projectiles.-Relates to projectiles t.o which propellent cartridges are attached for use in trench mortars and like guns. According to the invention, the propellent charge is divided into sections, the primary section being ignited at its base and, after burning to its front end, imparting ignition to the other or secondary sections through permanently open passages. As shown, the cartridge a to be screwed at g to the base of a projectile is made with a central chamber b surrounded by other chambers f. A charge of propellent explosive in the chamber b is ignited at the base end and after burning through, ignites charges in the chambers f at the front end. The gases from the chambers f pass through the chamber b. In modifications, (1) the chambers f are open at the base for the passage of their gases, (2) these chambers are replaced by a single annular chamber around the chamber b, and (3) the secondary charge is contained in the space c, the gases from which escape around the chamber b.
Patent GB-911807-A (GB)
Title: Magnetic data storage device
IPC: H01F10/14
Filed: 1961-05-16
Abstract: 911,807. Magnetic storage devices; magnetic structures. NATIONAL CASH REGISTER CO. May 16, 1961 [May 25, 1960], No. 17720/61. Class 38 (2). [Also in Group XXXVI] A magnetic data storage device comprises an electroplated saturable magnetic coating 0.05- 1 Á thick on a stiff copper-alloy wire 0.12-1.3 mm. thick. The coating may be nickel-iron alloy containing 1 to 6% by weight nickel, and the wire may be phosphor-bronze or copperberyllium. In a preferred method of preparation the wire is cleaned in an alkaline bath, rinsed, immersed in HCl to remove oxide and rerinsed. It is then electroplated in a solution comprising 315 gm. FeCl 2 .4H 2 O, 10 gm. NiCl 2 .6H 2 O and 180 gm. CaCl 2  per litre of solution, with HCl to give a pH value 0.95  0.05, and free iron to ensure a ferrous solution. The wire is drawn through a tubular or spiral anode through a 4 cm. zone of contact with the electrolyte at a speed of 5 cm/min. using a current density of 22-280 mA/sq. cm. The plated wire is washed, dried and coated with a protecting resin. The nickel chloride concentration may be reduced. In use a length of the storage wire is associated with spaced, concentric solenoids encircling it. Specification 896,203 is referred to.
Patent GB-1469726-A (GB)
Title: Petroleum recovery
IPC: C09K8/588
Filed: 1975-04-29
Abstract: 1469726 Oil recovery CALGON CORP 29 April 1975 [8 May 1974] 17779/75 Heading E1F In the secondary or tertiary recovery of petroleum, the displacing medium comprises water and a methylolated water soluble copolymer of acrylamide and 2-acrylamido methyl propane sulphonic acid. The methylolated polymer is produced by reacting 0.1-10 moles of formaldehyde with each mole of acrylamide in the polymer. The displacing medium contains from 0.0025-0.5 per cent by weight of polymer and may be kept in a substantially oxygen free condition.
Patent GB-865941-A (GB)
Title: Improvements in or relating to measuring apparatus
IPC: G01R1/30
Filed: 1959-05-26
Abstract: 865,941. Moving-iron voltmeters. HEL. LIGE & CO. G.m.b.H., FRITZ. May 26, 1959 [May 27, 1958], No. 17818/59. Class 37. In a valve voltmeter incorporating a moving- iron meter excited by a pair of windings 7a, 7b, Fig. 1, the windings are commoned at 7c and connected in the respective anode leads of a pair of screen grid valves 2, 3 arranged in pushpull, the screen grids 2b, 3b being supplied from point 11a between damping impedances 9, 10 connected across the windings. The meter operating current, i.e. anode current + screen current may be supplemented by a further current such as that fed to a load 24. In a modification, described with reference to Fig. 2 (not shown) the screen feeds are tapped from separate points on the damping impedance to provide positive or negative feed-back, and an interconnected cathode resistor arrangement provides current feed-back. The meter may comprise permanent magnet armature, or a soft iron armature 8, Fig. 4, moving in a magnetic frame 28 carrying windings 7a, 7b, the indicator or recorder being carried by the armature which is returned to a defined inoperative position by a helical spring when the meter is de-energized.
Patent GB-853099-A (GB)
Title: Improvements in the production of aryloxy fatty acids
Inventor: TOEPEL TIM
IPC: C07C51/367
Filed: 1959-05-26
Abstract: A process for the production of aryloxy fatty acids comprises reacting a phenol with a halogenated fatty acid containing at least 3 carbon atoms at elevated temperature in aqueous alkali hydroxide solution in the presence of an aliphatic or cycloaliphatic alcohol of at least 3 carbon atoms which is volatile with steam.  The reaction is preferably carried out at 90-110 C. using a 40-60% aqueous sodium hydroxide solution and 60-150% by weight of the alcohol based on the phenol which may be present in a slight excess.  The alkali solution is added to the mixture of acid, phenol and alcohol which is then refluxed, a mineral acid added to neutralise the excess alkali and phenol, the alcohol and excess phenol removed by steam distillation and further mineral acid added to precipitate the aryloxy fatty acid. The phenol used is preferably phenol itself or naphthol or phenols or naphthols bearing one or more alkyl and/or halogen substituents.  The halogenated fatty acid is preferably an a -chloro acid.  Lists of suitable acids and phenols are given. Examples illustrate the use of n-propanol, n-butanol, iso-butanol, isoamyl alcohol, 2-ethyl-hexanol and cyclo-hexanol and describe the preparation of a -2-methylphenoxy, phenoxy, 2, 4-dimethyl-phenoxy, 2, 4-dichlorophenoxy, 2, 4, 5-trichlorophenoxy and b -naphthoxy-propionic acids ; b -(2, 4-dichlorophenoxy) propionic acid ; a -(2, 4-dichlorophenoxy) caproic acid ; a -phenoxy and a -(2, 4-dichlorophenoxy)-isovaleric acid and a -phenoxy and a -(2,4-dichlorophenoxy)-stearic acid. a -bromo-caproic and isovaleric acids are prepared by reacting the acids with bromine and phosphorous trichloride. a -bromo-stearic acid is prepared by reacting the acid with bromine and red phosphorous.
Patent GB-1430272-A (GB)
Title: Synchronising systems
IPC: H04N1/36
Filed: 1973-04-13
Abstract: 1430272 Facsimile transmission apparatus; synchronizing; variable delay systems RICOH KK 13 April 1973 [28 April 1972] 17861/73 Headings H4F H4P and H4R A synchronizing system for facsimile transmission apparatus or magnetic recording and reproducing apparatus in which groups of data signals and corresponding synchronization pulses are cyclically produced, wherein each or each but one data signal in each group is delayed by an amount corresponding to the amount by which it is out of synchronism with its synchronization pulse. A facsimile apparatus is described in which a pair of line period video signals and a pair of corresponding sync. pulses are cyclically produced by a rotary drum arrangement including two diametrically opposed slits which sequentially scan a document, the sync. pulses being produced by sync. marks on a flange on the drum as they move past a read-out means. The video signals are passed to two channels, and assuming one video signal of each pair is in synchronism with its associated sync. pulse, the other video signal is delayed to bring it into synchronism with its sync. pulse. Alternatively both video signals of each pair may be appropriately delayed. The delaying means may comprise a pair of the monostable multivibrators triggering a bi-stable multivibrator, each pulse of the video signal being regenerated with the appropriate delay. Alternately the delaying means may comprise a delay line or shift register.
Patent GB-759879-A (GB)
Title: Improvements in padlocks
Inventor: BANKS ANTHONY ALAN
IPC: E05B67/24
Filed: 1954-06-18
Abstract: 759,879. Padlocks. BANKS & CO., Ltd., J. June 8, 1955 [June 18, 1954], No. 17888/54. Class 44. Relates to padlocks of the type in which the shackle slides on the padlock body and on which the key is in. serted longitudinally intc the body and is provided with slots for clewing one or more plate wards secured in the lock body and are apertured to allow pass. age of the key, but prevent turning of the key unless the latter has appropriately positioned ward slots. According to the invention, the case of the padlock comprises two making halves, each consisting of a casting, the assembled case having an integral structure affording a housing and alternative locating means for the ward or wards of the lock mechanism. As shown, two mating case portions 10, 11 are secured together by stumps 13 which engage holes 12 in the portion 10, guideways and housings being formed half in one portion and half in the other for the shackle bolt 14, spring 15, release catch 16, spring 17 and keyhole disc 19. The portion 10 includes a housing for apertured plate wards 20, the side and end walls 22, 23 of the housing projecting beyond the parking face of the portion 10. The housing is formed with ribs 24 which co-operate with ribs 26 of the portion 11 to locate the wards 20.
Patent GB-961475-A (GB)
Title: Treating dextrin solutions
IPC: C08B30/18
Filed: 1962-05-10
Abstract: The viscosity of the dextrin solutions produced according to the parent Specification is increased by heating the solutions above 100 DEG C.  The heating, e.g. 110-120 DEG C. for 30 minutes, may be carried out immediately after completion of the enzymatic hydrolyses or after dilution of the dextrin solution.ALSO:The dextron solutions disclosed in the parent Specification are heated above 100 DEG  C., to produce solutions of increased viscosity.  The heating may be carried out immediately after completion of the enzymatic hydrolysis or after dilution of the dextron solution.
Patent GB-152771-A (GB)
Title: Improved variable speed gear
IPC: F16H37/08
Filed: 1919-07-21
Abstract: 152,771. Rawlings, F. July 21, 1919. Variable-speed friction gearing comprises a disk b co-acting with three or more rollers c, c<1>, c<2> and an epicyclic train. The disk b slides on a driving- shaft a<1> upon the end of which is fixed a sun gear t. The rollers c &c. are moved in unison upon radial spindles d which are geared through pinions f, a wheels, and a sleeva s<1> to a sun gear t<1>. Planet gears ware carried by a cage h secured to a driven shaft o. A clutch may be arranged for direct driving.
Patent GB-1108175-A (GB)
Title: Improvements in and relating to tea-drying machines
Inventor: RIDLER WILLIAM FREDERICK ALLAN
IPC: F26B17/18
Filed: 1964-05-01
Abstract: 1,108,175. Tea-drying apparatus. MARSHALL'S TEA MACHINERY CO. Ltd. 30 July, 1965 [1 May, 1964], No. 18127/64. Heading F4G. A tea-drying apparatus comprises an endless feed conveyer which loads tea leaf into a heated air chamber in which it is dried by passage in series on two horizontally mounted endless conveyers, means being provided for independently adjusting the conveying speed of the feed conveyer relative to the conveyers in the chamber. The speed of each endless conveyer may be independently adjustable by means which may comprise variable speed gears or variable ratchet drives.