baber/WOPTO huggingface dataset:
Patent GB-1365518-A (GB)
Title: Method and means for delivering a pressurized fluid flow
IPC: F16N39/00
Filed: 1971-11-24
Abstract: 1365518 Lubricating; valves BANDSTAHLKOMBINAT VEB 24 Nov 1971 [10 Aug 1971] 54616/71 Headings F2A and F2V The flow of lubricant through the bearing 3 of a drive shaft of a stirrer or agitator is controlled by a valve 5 in the downstream side of the lubricating system of the bearing, the valve being responsive to pressure variations in the stirring tank so that a predetermined ratio is maintained between the pressure in the tank and the pressure of lubricant in the system. Lubricant is pumped from a reservoir 2 to the bearing and then passes through a heat exchanger 4 and the valve 5 and returns to the reservoir. The valve comprises two chambers separated by a disc 7 connected to the interior of the valve housing by a flexible membrane 6. A hollow piston 15 is secured to one face of the disc 7. The piston is provided with apertures 8 or with slots of constant or variable width so that as the piston is moved the flow of lubricant to an outlet 9 from the chamber 12, in which the piston moves, is varied. The piston is moved by variation of the relative pressures on the disc, one side of the disc being subjected to the pressure prevailing in the stirring tank, and the other side to the lubricant pressure.
Patent GB-1206650-A (GB)
Title: Method and apparatus for the production of masks for use in the manufacture of planar transistors and integrated circuits
IPC: H01L21/00
Filed: 1967-12-04
Abstract: 1,206,650. Step and repeat photo-copying apparatus. UNISEARCH Ltd. Dec.4, 1967 [Dec. 5, 1966], No.55014/67. Heading G2A. In a method of producing a mask set, consisting of an array of basic patterns, for use in the manufacture of planar transistors, large scale artworks of each pattern are photographically reduced and reproduced as a pattern set on a single photographic plate, all of the patterns on the plate are then exposed simultaneously and a step and repeat procedure carried out to produce the mask set on a second photographic plate, the steps being less than the spacings between the pattern images formed in the second photographic plate by the first simultaneous exposure. In the second stage reduction apparatus, Fig.1, a photgraphic plate 14 bearing the first reduction image pattern is exposed to light from mercury vapour lamps 16, through prisms (21, 22, 23), Fig.3 (not shown) and condensers (24, 25, 26) and the images of the patterns are focused by microscope objective lenses 12, in a housing 11 on a base 10, at a plane (13) at which a photographic plate 27 is mounted on a compound table, which comprises outer and inner tables 33, 32 movable in one direction by a micrometer 34 on bearings on an optically flat surface of housing 11. Table 32 alone is movable by micrometer 36 in a perpendicular direction. Shutters (38) before the lamps, control the exposure time, and the lamps are cooled by fans (18).
Patent GB-1533387-A (GB)
Title: Sealing intercell connections of multi-cell electric batteries
IPC: H01M50/529
Filed: 1974-12-24
Abstract: 1533387 Sealing intercell connectors in batteries CHLORIDE GROUP Ltd 18 Feb 1976 [24 Dec 1974] 55703/74 Heading H1B [Also in Division B5] An intercell connection is made by placing a connector 5, having moulded on plastics flanges 7, in a notch 3 in a partition 4, positioning a mould part 16 on the flanges, and then introducing, e.g. polypropylene into the mould to fill the notch in the partition. The connector may be rectangular (Fig. 3, not shown) and may be shaped to key the flanges 7.
Patent GB-1160088-A (GB)
Title: Utilization of Sulfuric Acid in Alkylation
IPC: C07C2/62
Filed: 1966-12-13
Abstract: 1,160,088. Alkylating isoparaffins. TEXACO DEVELOPMENT CORP. 13 Dec., 1966 [27 Dec., 1965], No. 55861/66. Heading C5E. In a process for the alkylation of an isoparaffin with a feedstock containing secondary and tertiary olefins in the presence of a sulphuric acid catalyst in an alkylation zone containing a reaction mixture comprising isoparaffin, olefin, alkyl sulphates and sulphuric acid, wherein the effectiveness of said sulphuric acid becomes impaired by the accumulation of alkylation contaminants, and wherein the effectiveness of said sulphuric acid is restored by contacting at least a portion of the sulphuric acid catalyst separated from said reaction mixture with an olefin forming alkyl sulphates, which alkyl sulphates are passed to said alkylation zone and release 100% sulphuric acid when the alkyl sulphate alkylates the isoparaffin, the improvement comprising contacting an olefin feed comprising isobutylene and straight chain olefin with sulphuric acid having a concentration within the range of 50 to 70 wt. per cent sulphuric acid and 30 to 50 wt. per cent water in a first absorption zone, withdrawing from said first absorption zone a first absorption effluent hydrocarbon phase comprising at least a portion of said straight chain olefin and a first absorption effluent acid phase comprising absorbed isobutylene, contacting at least a portion of said first absorption effluent hydrocarbon phase with said separated sulphuric acid catalyst in a second absorption zone effecting formation of alkyl sulphates, withdrawing from said second absorption zone a second absorption effluent hydrocarbon phase comprising unreacted olefin and alkyl sulphates and a second absorption effluent acid phase comprising alkyl sulphates and alkylation contaminants, separating alkyl sulphates from said second absorption effluent acid phase and alkylation contaminants and passing thus separated alkyl sulphates to said alkylation zone. The examples relate to the alkylation of isobutane, a suitable flow diagram for the process also being described.
Patent GB-1285218-A (GB)
Title: Arc-free heavy-duty circuit-breaker
IPC: H01H9/54
Filed: 1969-11-14
Abstract: 1285218 Arcing preventing in switches; heavy current switches LICENTIA PATENTVERWALTUNGS GmbH 14 Nov 1969 [15 Nov 1968] 55932/69 Heading HlN An arc-free heavy-duty switch includes a mechanical switch connected in parallel with a plurality of anti-parallel connected pairs of thyristors 1-n arranged in series, the switch closing later and opening earlier than the thyristors, the switch including a plurality of contact gaps 1<SP>1</SP>-n<SP>1</SP>, connected in series, with crossconnections a to the series connections of the thyristor pairs 1-n. S is a disconnecting switch and b are voltage-controlling loads. A control St supplies the opening and closing instructions for 1-n, 1<SP>1</SP>-n<SP>1 </SP>and S. It receives its "on" and "off" instructions by hand or from an electronic computer controlling and monitoring the mains automatically. Structurally the mechanical contacts and thyristors are mounted in a column of hard paper or porcelain filled with SF 6 , and contact actuation is by pressure gas or an insulated cam or eccentric shaft, normally in synchronism with the mains. The contacts and thyristors may work under vacuum, or an insulating liquid, or gas at increased pressure. The thyristors remain constantly turned on by suitable resistors or inductors so that, on contact opening, they can take over their current quickly. In the event of a short-circuit, a maximum of only one half-wave of the short-circuit current occurs. Reference is made to suitable voltage control by resistors or capacitors. A saturable stepped reactor may be used in series with the thyristors to facilitate circuit closing.
Patent GB-1498793-A (GB)
Title: Gramophone record detecting arrangement
IPC: G11B19/10
Filed: 1973-12-04
Abstract: 1498793 Detecting record presence and size STRATHEARN AUDIO Ltd 4 Dec 1974 [4 Dec 1973 2 July 1974 (2)] 56188/73 29281/74 and 29282/74 Heading G5R In a record player the presence of a record on a turntable and its size are determined by a photo-electric detector arrangement. Light can be directed via apertures A, B and C in turntable 18 to detectors below the turntable and the record size determined by which of the apertures are closed by the record to the passage of light. Alternatively a light source can be associated with each aperture and positioned below the turntable and the light from the source is directed such that it is reflected by the underside of a record blocking an aperture to a corresponding light detector also below the turntable. In a second arrangement a flat beam of light 33 from an elongated source A is directed parallel to and slightly above the turntable 30 surface to an elongated light detector 34. The amount of the beam width which is blocked and hence the output signal of the detector depends on the record size. In further arrangements the light source can be above and to one side of the turntable and the light is directed by prisms or reflecting elements through apertures in the turntable. Alternatively the apertures can be internally reflecting or carry light guides. The record on the turntable can actuate one or more flaps to close apertures in the turntable and direct light from a source via the reflecting underside of the flap to a photo cell. The light sources can be modulated or coloured or a further detector responsive only to ambient light can be provided to offset the effect of such light on the main detectors.
Patent GB-1356479-A (GB)
Title: Apparatus for cooling a continuous casting mould
Inventor: MAURER A A
IPC: B22D11/055
Filed: 1971-12-09
Abstract: 1356479 Continuous casting VEREINIGTE OSTERREICHISCHE EISENUND STAHLWERKE AG 9 Dec 1971 [16 Dec 1970] 57319/71 Heading B3F [Also in Division F4] Apparatus for cooling a continuous casting mould 1 comprises a water supply conduit 2 incorporating a pump 5 and a cooling heat exchanger 6, a water return conduit 3, and an emergency water supply conduit 52 having a valve 53, whereby valve 53 is closed when said pump is operating and is automatically opened when said pump fails. An overhead container 4 positioned above the mould 1 for the supply of fresh water includes an inert gas, e.g. nitrogen, space above the water level at a pressure of 0À3 to 0À4 atmospheres. The pressure space 23 is connected to a clean-water tank 38.
Patent GB-1398589-A (GB)
Title: Treatment of aluminium or aluminium alloy surfaces which have been anodized
IPC: C25D11/24
Filed: 1972-12-15
Abstract: 1398589 Treating anodized aluminium HENKEL & CIE GmbH 15 Dec 1972 [17 Dec 1971] 57913/72 Heading C7B A surface of Al or an Al alloy (e.g. with Mg and/or Si) is anodically oxidized and the oxidized surface consolidated in a solution containing from 0.0005 to 0.05 g/l of citric, tartaric, gallic or saccharic acid or an equivalent amount of a water soluble salt of the acid (e.g. an alkali metal, ammonium or alkaline earth metal salt), the solution temperature being between 90‹C and the boiling point and the pH being from 5 to 6. The pH may be adjusted to this range using ammonia or acetic acid. The solution may also contain Ni or Co acetate. For example, Al alloy is degreased with alkali, pickled, anodically oxidized using either a direct current H 2 SO 4  process or a process which produces colouring (e.g. using a solution of sulphophthalic or sulphanilic acid), and then the oxide is consolidated.
Patent GB-1351399-A (GB)
Title: Polydiorganosiloxane-polycarbonate block copolymers
IPC: C08G77/448
Filed: 1972-12-15
Abstract: 1351399 Polydiorganosiloxane-polycarbonate block copolymers BAYER AG 15 Dec 1972 [16 Dec 1971] 57979/72 Heading C3T Polydiorganosiloxane-polycarbonate block copolymers consist of 20-90 wt. per cent of segments -(-R 2 SiO-) n - in which each R is a monovalent aliphatic, cycloaliphatic, araliphatic or aromatic unsubstituted or inertly substituted hydrocarbon radical of up to 12 C atoms, and n is an integer of 2-200, and 10-80 wt. per cent of segments wherein each R<SP>1</SP> is H or an optionally inertly substituted monovalent aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon radical of up to 12 C atoms, R<SP>11</SP> is halogen or a C 1-4  alkyl radical, a is 0, 1, 2, 3 or 4, and p is an integer of 1-7, the two types of segment being linked by aryloxy-Si bonds and the terminal blocks being polysiloxane segments having terminal units -O-SiR 2 -X wherein X is halogen, -OH, or a C 1-4  alkoxy radical. They may be obtained by reaction at 60-100 C. in an inert organic solvent of 1 mol. of α,#-dihydroxy polycarbonate with 1À05-2 moles of α,#-dichloropolysiloxane in the presence of the stoichiometric amount of a tertiary amine, the product being isolated by filtering off the amine salt and removing the solvent. The OH or alkoxy terminal groups are obtained by treating the product with water or an alkanol. Suitable solvents are chloro- and dichlorobenzene ; suitable amines are triethylamine or, preferably, pyridine. In the Examples a dihydroxy bisphenol A polycarbonate in which p in the above formula is 2À7 is heated in chlorobenzene in the presence of pyridine with dichloro polydimethylsiloxanes of chlorine content 1À2%, 1À95%, 3À2%, 5À6% or of 7À9% and 1À43% consecutively or mixed. On mixing the products with 5 wt. per cent of methyl triacetoxysilane cross-linking takes place at room temperature.
Patent GB-1327153-A (GB)
Title: Method of manufacturing or treating steelwire components
IPC: B21C1/00
Filed: 1971-12-17
Abstract: 1327153 Drawing SHINKO WIRE CO Ltd 17 Dec 1971 [18 Dec 1970] 58641/71 Heading B3P A steel wire component having a central core wire surrounded by outer wires may be drawn without back tension if the core wire is 3-10% greater in diameter than the surrounding outer wires and the reduction in cross-section of the component is more than 15%. In an example, a strand comprising a core wire and six outer wires, e.g. of 0À75% C steel, is reduced in crosssection by 20%.
Patent GB-1375558-A (GB)
IPC: F16C17/08
Filed: 1971-12-17
Abstract: 1375558 Bearings SIEMENS AG 17 Dec 1971 [19 Dec 1970] 58820/71 Heading F2A A bearing for a rotatable shaft comprises one member 5 having a face for engaging the shaft 8, and a porous member 3 adjacent the member 5, which is adapted to receive lubricant within its pores, the member 5 having conduits 7 through which lubricant may pass from the pores of the member 3 to the face of the member 5. The conduits are preferably capillary bores whose outlets in the face are interconnected by grooves 9. The porous member may be of resilient material and be located in a recess 2 in a set screw 1.
Patent GB-1394718-A (GB)
Title: Heart stimulation apparatus
IPC: A61N1/362
Filed: 1972-12-21
Abstract: 1394718 Heart pacemakers L' ELECTRONIQUE MEDICALE SERDAL SA 21 Dec 1972 [28 Dec 1971] 59199/72 Heading A5R An implantable heart pacemaker comprises electrode c, d for connection to the patient's heart 2, a stimulating pulse generator 1, and a plurality of Shunts connected in parallel across electrodes c, d, each shunt comprising a respective remotely operable normally-open switch Rl, R2, R3 and a respective triggerable conducting device Z1, Z2, Z3, said devices being triggered into conduction upon application thereacross of a voltage exceeding a predetermined magnitude, the trigger voltage of each device being different from that of any of the other devices. The devices 21, 22, 23 may be zener diodes and the switches R1, R2, R3 are reed relays. To test the proper functioning of the pacemaker an ECG machine 3, giving a displayed pulse 5 for each stimulating pulse, is connected to the patient. The pulses 4 are first observed with all relays R1, R2, R3 open and their height noted. The relays are then closed one at a time commencing with the relay in series with the diode of the highest trigger voltage, and working towards that in series with the diode of lowest trigger voltage, until the height of pulse 5 shows a step decrease to a level corresponding to the trigger voltage of the currently operative shunt whereby the actual operating pulse amplitude of generator 1 may be calculated from the observed ratio of the height of pulses 5 and the known trigger voltage. The diode of lowest trigger voltage has a trigger voltage greater than the stimulation threshold of the patient's heart when the pacemaker is first implanted, but sufficiently near to this threshold subsequently to be able to detect any increase of the threshold to their lowest trigger level. More than three shunt circuits may be provided.
Patent GB-1421159-A (GB)
Title: Microscopes
IPC: H01J37/153
Filed: 1972-12-23
Abstract: 1421159 Electron microscopes; ion beam tubes MAX-PLANCK-GES ZUR FORDERUNG DER WISSENSCRAFTEN EV 28 Dec 1972 [28 Dec 1971] 59884/72 Heading H1D An electron or proton transmission microscope which permits the derivation of a three dimensional image of an object employs means for passing the charged particles through the object along at least three discrete paths as a corpuscular beam, each of said paths passing through a lens, the paths intersecting at a point within the object, and at least two of the paths intersecting each other at an angle of at least 30 degrees, and preferably between 80 degrees and 120 degrees, the beams being so arranged and of such a width as to permit individual correction of the distortions thereof. Preferably 20 to 40 beams are employed, which may be disposed in the surface of a cone (Fig. 15, not shown), or in a plane (Fig. 16, not shown). The arrangement permits the use of non-rotationally symmetric lens systems, and of magnetic or electrostatic multipole arrangements for the correction of astigmatism (Figs. 14a and 14b, not shown). The apparatus employs either several beam sources; or a single beam source together with a lens system which permits only discrete beam paths therethrough; or a beam source and imaging device which are movable sequentially into positions corresponding to the desired beam paths. The lens system may, as shown in Fig. 1-in which 3 is the specimeninclude successive lenses formed of pairs of magnetic rings 4, 5, and 8, 9, and 10, 11, drilled with aligned apertures to define the beam paths, and followed by an electrostatic lens formed of two curved ring electrodes 12, 13 the edges of which may be curved outwards to assist aberration correction; or may, as in the arrangement of Fig. 4, which is suitable for a scanning transmission microscope, employ diaphragms 41 and 42 to define the beam paths, which thereafter pass through the electrostatic lens 43, 44 to impact the specimen 45, the-transmitted beams being received by separate detectors 46, 47. Alternatively, electrostatic lenses may precede the magnetic lenses (Figs. 3 and 5, not shown). In other arrangements, lenses are formed by magnetic coils, which may be cooled to render them superconductive, and which may, Fig. 10, incorporate astigmatism connectors formed by a central and peripheral electrostatic or magnetic elements 102, 103 respectively, which produce quadrupole fields about each beam path (Fig. 11, not shown); or, Fig. 13a, the lens consists of coils or permanent magnets 131, 132, of alternating polarity, such that only every second inter-element field is suitable for producing a useful beam; or the beams may be directed through inter-turn spaces of a superconductive toroidal coil (Fig. 17b, not shown); or a plurality of beam sources, arranged in a plane or in a cone, direct beams on to the specimen through respective members of a corresponding plurality of conventional lenses (Fig. 18, not shown).
Patent GB-1356409-A (GB)
Title: Process for the preparation of 3-isoxazolyl carbonylureides
IPC: C07D261/18
Filed: 1971-12-23
Abstract: 1356409 Isoxazole derivatives SHIONOGI & CO Ltd 23 Dec 1971 [28 Dec 1970] 60112/71 Heading C2C Isoxazole derivatives of the formula wherein R<SP>1</SP> is H, C 1-5  alkyl, C 1-5  alkoxy, or cycloalkyl, R<SP>2</SP> is H, C 1-5  alkyl or cycloalkyl; R<SP>3</SP> and R<SP>4</SP> each are H, C 1-5  alkyl, C 2-6  alkenyl, cycloalkyl phenyl or together with the N atom to which they are attached form a 1-pyrrolindyl, piperidino, 1-piperazinyl, 4-(C 1-5  alkyl)-1-piperazinyl or morpholino group are prepared by (a) reacting 5 - R<SP>1</SP> - 3 - isoxazolecarboxylic acids with carbodiimides of the formula wherein R<SP>3</SP> and R<SP>3</SP> are the same and each is C 1-5  alkyl or cycloalkyl, in inert solvents (R<SP>4</SP>= H), (b) treating 5-R<SP>1</SP>-3-isoxazolecarboxamides or N - (R<SP>2</SP> - substituted) - 5 - R<SP>1</SP> - 3 - isoxazolecarboxamides with compounds of the formula wherein Y is halogen, C 1-4  alkoxy, aryloxy, or acyloxy, or (c) treating 5-R<SP>1</SP>-3-isoxazolecarboxamides with oxalyl halides in inert solvents and reacting the thus obtained 5-R<SP>1</SP>-3-isocyantocarbonylisoxazoles with amines of the formula HNR<SP>3</SP>R<SP>4</SP>(R<SP>2</SP> = H). Pharmaceutical compositions, suitable for oral or parenteral administration, contain the above compounds when prepared by the above processes in admixture with pharmaceutically acceptable diluents or carriers. The compounds possess hypoglycemic activity. Reference has been directed by the Comptroller to Specification 1,305,216.
Patent GB-1341208-A (GB)
Title: Method for preparing plastics sheets having surfaces receptive to adherent coatings
IPC: H05K1/03
Filed: 1970-12-29
Abstract: 1341208 Surface treatment of polymers MACDERMID Inc 29 Dec 1970 [31 Dec 1969] 61425/70 Headings C3B C3P and C3R [Also in Divisions B2 B5 C7 and H1] The surface of a thermoplastic resin sheet or a partially cured thermosetting resin sheet is sensitized to receive adherent coatings by anodically treating the surface of an aluminium or aluminium alloy foil, contacting the treated surface with the plastics sheet, applying heat and pressure sufficient to bond them, and in the case of a thermosetting resin to cure the resin, and chemically stripping the aluminium foil from the plastics sheet. The plastics sheet may particularly comprise polypropylene, ABS copolymer, a B-stage epoxy resin obtained from epichlorohydrin and bisphenol A or a B-stage phenolic resin and also may be of polysulphone, polycarbonate, polyphenylene oxide or a thermosetting polyester. It may be reinforced with nylon fibre, asbestos, mica, paper or especially glass fibre in the form of filaments or staple yarns, rovings, mats, woven fabrics or chopped fibres. The foil may comprise pure Al or Al-Cu, Al-Mg or Al-Cu-Mg-Zn alloy and is anodically treated in an electrolytic bath containing 10-60 weight per cent of phosphoric acid at 70-130‹F. for 1-30 minutes at a current density of 10-75 amps per square foot. The foil is stripped from the resin sheet by treatment for 2-30 minutes at 80-180‹ F. with an aqueous solution of NaOH, KOH, LiOH or HCl. Prior to coating, the sensitized surface of the resin sheet may be catalysed in a tin-palladium catalyst solution. In Examples IV and VI, the thus-prepared surface of a polypropylene and ABS copolymer sheet respectively is plated electrolessly with nickel and then electrolytically with copper using conventional techniques. In Examples V and VI, similar sheets are coated with an acrylic base lacquer.
Patent GB-1298149-A (GB)
Title: Process for preparing difunctional organic compounds from cobalt complexes
Inventor: NERI CARLO
IPC: C07C381/00
Filed: 1970-12-30
Abstract: 1298149 Dimerization process SNAM PROGETTI SpA 30 Dec 1970 [30 Dec 1969] 61891/70 Heading C2C Compounds having the formula wherein A is a divalent substituted or unsubstituted hydrocarbyl radical and X is a -NO 2 , -CN, CH 3 CO- or -CHO group, are obtained by heating in an inert atmosphere cobalt-III complexes of the formula wherein L 1  to L 4  are ligand groups belonging to the same or different ligand molecules. For example, hexane-2,5-dione and succinodinitrile may be produced from cobalt III complexes in which -A-X is an acetonyl or cyanomethyl group respectively, in the former case 2,5-dimethylfuran is produced as a by-product.