baber/WOPTO huggingface dataset:
Patent GB-1482747-A (GB)
Title: Chromium plating baths
IPC: C25D3/06
Filed: 1973-10-10
Abstract: 1482747 Chromium electro-plating BNF METALS TECHNOLOGY CENTRE 10 Oct 1974 [10 Oct 1973] 47424/73 Heading C7B An aqueous Cr electro-plating bath contains trivalent Cr ions e.g. 0À1 to 2 molar, and at least 0À08 e.g. 0À2 to 2 molar H 2 PO 2  ions. Preferably the molar ratio of trivalent Cr to H 2 PO 2  is 0À4 to 1À7. The source of Cr ions may be chromic halide preferably chloride and/or sulphate, or P oxy acid salt, organic acid salt or complex with other anions, or formed in situ by action of HCl, H 2  SO 4  or H 3 PO 4  on Cr, its oxide, Cr 2 O 3 , or hydroxide or reduction of CrO 3  by H 2 O 2 . The source of H 2 PO 2  ion may be NaH 2 PO 2 , H 2 O or hypophosphorous acid. With CrCl 3 , an organic buffer, e.g. 10 to 25% by volume dimethylformamide, may be added to the bath. The bath may also contain at least 0À2 molar ammonium ions e.g. added as halide or sulphate; 0À5 to 1 molar boric acid, borate or fluoborate; 5 to 50 ppm of a cationic, anionic, non- ionic or amphoteric surfactant, e.g. cetyl trimethylammonium bromide, substituted imidazolines, Na lauryl sulphate, sulphonated castor oils, higher fatty alcohols, ethers, epoxides and amino acids; di-n-pentyl or butyl phthalate, for alloys, in saturated solution; 0À02 to 2À5 molar Fe and/or 0À02 to 1À0 molar Ni. Other ions present in the bath may be NO 3 , NO 2 , F, Br, I, alkali metal e.g. Na or alkali earth metal, e.g. Ca. The pH may be adjusted e.g. to 1À5 - 4À0 by acid, NaOH or NH 3  addition. For hard deposits the bath preferably contains Al 2 O 3 , Y 2 O 3 , ZrB 2 , MoS 2  or WC particles of maximum average diameter 5 microns or whiskers 300 to 600 microns long and up to 100 microns diameter. The anode is preferably of magnetite, coated steel, Pt or platinized Ti for a sulphate bath, or of carbon e.g. graphite for halide or mixed halide/sulphate bath; or may be of Cr or corresponding Cr-Fe and/or Ni alloy. Prior to electro-plating with Cr, particularly overbrightened Ni layers, the substrate may be cathodically treated in NaCn solution and rinsing. The substrate may be of Fe, steel, Ni, Cu, Zn, Al or brass.
Patent GB-1108151-A (GB)
Title: Fibrillar assemblies of polymer mixtures
Inventor: BEAUMONT ALBERT GORDON
IPC: D01D5/08
Filed: 1963-12-03
Abstract: 1,108,151. Producing fibrillar assemblies. COURTAULDS Ltd. 2 Dec., 1964 [3 Dec., 1963], Nos. 47620/63 and 49921/63. Heading B5B. A fibrillar assembly is produced by preparing a mixture of two or more polymers which are incompatible or have only a limited compatibility and which are selected from the group consisting of a polyamide, a polyester, polyethylene and polypropylene, forming from the mixture a heterogeneous article having a coherent polyfibrillar structure and treating the article in such a manner as to decrease the cohesion of the fibrils, not to such an extent that they become separate, but so that they remain together as a fibrillar assembly. The article may be formed by extrusion and may be a continuous filament or a film. It may be stretched before being converted into a fibrillar assemb.y. The article may be converted into the assembly by mechanical action, heat treatment or solvent action. The mixture may consist of nylon 6 with an equal weight of polypropylene or low or high density polyethylene.
Patent GB-1306758-A (GB)
Title: Clamping device more particularly for a machine vice
IPC: B25B1/10
Filed: 1971-10-13
Abstract: 1306758 Vices G H ROHM 13 Oct 1971 [17 Oct 1970 23 Oct 1970] 47636/71 Heading B3B A clamping device has a two speed feed and operates by rotation of a grip bush 19. Initial rotation causes rotation of spindle 10 via a stop clutch 20. The spindle is threaded in a spindle nut 11 which is attached to fixed member 1. Forward movement of spindle 10 causes movement of a secondary piston 7 which moves clamping member 2 forwardly. The step clutch consists of a spring loaded sleeve 27 having a pin 25 therethrough that engages in grooves 26 in spindle 10. Spindle 10 and the grip bush are drivingly connected by depressions and projections 29. When the stop clutch slips further rotation of the grip bush causes drive spindle 19 to move axially forward and act through push rod 17 on the primary piston 6 to move member 2. The stop clutch may be by-passed by forward movement of a clutch ring 37 until its pin 40 engages into a fluid bore 40.
Patent GB-1458846-A (GB)
Title: Semiconductor packages
IPC: H01L23/495
Filed: 1974-11-04
Abstract: 1458846 Semi-conductor devices RAYTHEON CO 4 Nov 1974 [3 Dec 1973] 47638/74 Heading H1K End portions 18 of the fingers of a lead frame to which beam leads 14 of semi-conductor chip device 18 are to be electrically connected are of reduced thickness compared with the rest of the lead frame. The tendency to twisting or lateral movement of the fingers under the bonding pressure is reduced, particularly if the ends are thinner than their width. As shown, the frame leads 16 are bonded to ceramic base 20 by glass layer 24, and encapsulation is completed by bonding ceramic cover 26 to the frame leads by glass layers 32. Preferably the co-efficients of thermal expansion of the various bonded parts substantially metal.
Patent GB-980101-A (GB)
Title: Polysiloxanes
IPC: C08G77/00
Filed: 1962-12-18
Abstract: The invention comprises compounds of the formula <FORM:0980101/C3/1> where n is 0 or 1, and R is a methyl, ethyl, or propyl group, and polymers and copolymers thereof.  The compounds are prepared by the reaction of tetraphenyldisiloxane diol-1,3 or hexaphenyltrisiloxane diol-1,5, with the appropriate methyl alkyl dichlorosilane, in the presence of an excess of a hydrogen chloride acceptor, e.g. a tertiary amine, particularly pyridine. The reagents may be dissolved in an inert solvent, e.g. tetrahydrofuran n-hexane, xylene, ether, or toluene.  The hydrochloride precipitate is removed, the solvent evaporated, and the product recrystallized.  Polymers with repeating units:- <FORM:0980101/C3/2> where n and R are as defined above, are prepared from these compounds by heating them alone at 300-375 DEG C., or preferably with a catalyst at 25-170 DEG  C.  Any conventional alkaline organopolysiloxane rearrangement and condensation catalyst may be used, e.g. alkali metal hydroxides, alkoxides, thiolates, or silanolates or certain quarternary phosphonium hydroxides. A preferred catalyst is a dispersion of e.g. 0.01-1% of an alkali metal hydroxide in a cyclic polydiorganosiloxane, especially octamethyl cyclotetrasiloxanes, the hydroxide amounting to 10-103 p.p.m. by weight of the monomer.  The polymerization may be effected at 25-170 DEG  C., with the monomer molten, or, less desirably, in the minimum of an inert solvent.  Curing is best effected by ionizing irradiation, e.g. electrons of energy 50,000 to 20,000,000 electron volts.  Fillers may be added, e.g. silica aerogel and fumed TiO2, CaSiO3, Fe2,O3, Cr2O3, CdS, asbestos glass fibres, carbon black, lithopone, and talc. Examples 1-6 describe the preparation of cyclo tri- and tetra-siloxanes in which R is Me, Et and n-Pr, and Examples 7-16 the polymerization of these compounds in the presence of 0.4 or 1% dispersions of KOH in octamethylcyclotetrasiloxane at 110-140 DEG C. The polymers are dissolved in benzene and precipitated by methanol, and cured by irradiation with 50-100x106 Roentgens of 800 Kv. electrons. Copolymers of the compounds of the invention with themselves or other cyclic diorganopolysiloxanes, e.g. those of Specifications 980,102, 980,103, 980,109, 980,105, 980,106, 980,107, 980,108 and 980,109, may be prepared by mixing the monomers in the desired proportions and polymerizing as above described.  Such copolymers, when containing vinyl or adjacent methyl groups, can be cured by irradiation or by conventional free radical, e.g. peroxide, vulcanizing agents. Examples 17-20 relate to the preparation-and cure of dimethyl tetraphenyl cyclotrisiloxane/methyl vinyl tetraphenyl trisiloxane, and methyl propyl tetraphenyltrisiloxane/methyl vinyl tetraphenyl trisiloxane copolymers.
Patent GB-1401280-A (GB)
Title: Compositions and method for improving the resistance of calves to intestinal disorders
IPC: A23K1/18
Filed: 1971-10-14
Abstract: 1401280 Endotoxin preparations UNILEVER Ltd 10 Oct 1972 [14 Oct 1971] 47853/71 Heading A5B The resistance of calves to intestinal disorders is improved by repeated oral administration of the endotoxins of a pathogenic strain of a bacterium, the strain being selected from Escherichia Coli 08, 09, 015, 078, 0114, 0137 or 0139, Salmonella dublin or Salmonella typhimurium and the endotoxin being free from living bacteria. The endotoxins may be administered in water or the animals feed. The feed may be based on dried milk and may include protein, carbohydrate, fat, vitamins and minerals.
Patent GB-1380178-A (GB)
Title: Appliances for linear bodies
IPC: F16G11/00
Filed: 1972-10-18
Abstract: 1380178 Pre-formed line ties PREFORMED LINE PRODUCTS CO 18 Oct 1972 [18 Oct 1971] 48031/72 Heading D1T A helically preformed dead-end appliance 10 has first and second elongated leg portions 11, 12 preformed to respective different first and second pitch lengths, and a return bent bight portion 13. In Fig. 1 the hand of lay of leg 11 is the same as that of leg 12. In Fig. 3 (not shown) the hand of lay of leg 11 is opposite to that of leg 12. In use, Fig. 2, the leg 11 of longer pitch is first wrapped around the cable 15 and thereafter the leg 12 of shorter pitch is wrapped around the cable 15 and the leg 11. The appliance 10 may be made by forming each of the legs 11, 12 and the bight portion 13 separately and then joining the three elements by welding, clamping or the like.
Patent GB-1143500-A (GB)
Title: Smoking products
IPC: C08B15/04
Filed: 1967-10-23
Abstract: 1,143,500. Tobacco substitute. SUTTON RESEARCH CORP. 23 Oct., 1967 [21 Nov., 1966], No. 48033/67. Heading A2C. [Also in Division C3] Cellulose, e.g. delignified wood pulp of 80-100% purity, is oxidized using liquid nitrogen dioxide, whereby, e.g. 80-100% oxidation, expressed as polygalacturonic content, may be effected. Advantageously, oxygen is passed through the reaction mixture and a small amount of water is present. The product is useful in smoking mixtures, and to this end the following steps are followed: (1) The product is washed with water and/or organic solvents and treated sequentially with an alkali metal hydride or borohydride and with a source of hydrogen peroxide. (2) This product is mineralized to produce an ashcontent, on combustion, of 10-25%. Suitable salts for this are the oxalates, glycolates, diglycolates, lactates, pivalates and tannates of Ca, Mg, Sr, Ba, Li and K. They may be incorporated by direct soaking, or by chemical reactions involving direct salt deposition on the cellulosic substrate. In the case of Ca oxalate, this may be incorporated in the cellulose before oxidation, obviating the need for step (2). (3) As glow sustainer, potassium or potassium hydrogen oxalate is incorporated. The final product, as thin paper, e.g. cigarette or cigar wrappers, shredded strands or powder may be used on its own, or in admixture with tobacco.
Patent GB-1324739-A (GB)
Title: Electrical capacitors
IPC: H01G9/00
Filed: 1971-10-15
Abstract: 1324739 Electrolytic capacitors SPRAGUE ELECTRIC CO 15 Oct 1971 [28 April 1971] 48055/71 Heading H1M A capacitor terminal assembly 20 comprises an anode plate 21 and a cathode plate 23 the overlapping portions of which are separated by insulation 22, anode and cathode foils of a capacitor unit being electrically and mechanically connected to the non-overlapping portions of plates 21, 23, respectively. As shown in Fig. 4, electrolytic capacitor units comprise wound foils, at least the anode foils 11 being anodized, separated by paper spacing material 12. The rolls are flattened and foil portions extending from opposite ends have carriers cut away and are bent over so that as shown three units can have terminal portions connected by welding as at 16. The terminal portions are then welded to a terminal assembly 20 wherein anode and cathode plates 21, 23 may be anodized aluminium and separated by polyethylene terephthalate or polytetrafluoroethylene and laminated. A second multiple unit may be secured to the other side of the terminal assembly, and portions 28, 29 may extend through the lid of the capacitor casing for making external connection (Fig. 7, not shown). The encased capacitor may be impregnated with glycol borate electrolyte. The terminals may extend out of opposite sides and a four-terminal assembly may be constructed. The capacitor unit may alternatively be a stacked extending foil assembly (Fig. 8, not shown).
Patent GB-1194369-A (GB)
Title: Arrangement in Vibrating Screens
IPC: B06B1/16
Filed: 1967-10-24
Abstract: 1,194,369. Vibratory screen. A. AHLSTROM OSAKEYHTIO, KARHULA BRUK. 24 Oct., 1967 [25 Oct., 1966], No. 48317/67. Heading B2H. A free vibratory screening apparatus, comprising a screen 3 forming part of a screen box supported 'by springs 6 and carrying a motor 1, is vibrated by means of at least two unbalanced weights which are drivingly connected to the motor 1. The centre of gravity of the unbalanced weights 2 and the centre of gravity of the motor 1 lie horizontally off centre with respect to a line passing through the centre of the screen. The mass centre of gravity G of the apparatus lies horizontally between the point of action of the vibratory force F produced by the unbalanced weights 2 and the line passing through the centre of the screen. The sum of the moments of the forces resulting from the springs 6 about the mass centre of gravity G is equal to the moment of the vibratory force F about the mass centre of gravity G, i.e. # q x b = F x a. The motor 1 and weights 2 are connected by members 8 to the screen box. A protective hood 4 has a side ventilation aperture 5 adjacent the motor 1.
Patent GB-1024669-A (GB)
Title: A mechanical arrangement for laying surface dressings and the like on roads and similar surfaces
Inventor: POWNALL JOHN EMERSON
IPC: E01C19/48
Filed: 1963-12-06
Abstract: 1,024,669. Tar and chipping spreading machines. PHOENIX ENGINEERING CO. Ltd. Nov. 24, 1964 [Dec. 6, 1963], No. 48326/63. Heading E1G. A vehicle 1 supports and provides the drive for a conveyer 6 transferring chippings or the like from a hopper 11 to a spreading means 17 preceded by a tar or bitumen sprayer 29, a set of rollers 28 following the vehicle. Push rollers 7 move a truck 9 supplying chippings 10 to the hopper 11. The chippings are screened at 14 and metered at the spreader by a gate 22. Tar carried in a tank 25, mounted on the rollers 28, flows in a circulating system through a pump 33 and adjustable spray bar 29. The wheels 28 forming the rollers are offset for full coverage and may have free axial movement. Conveyers 6 are mounted on each side of the tractor 1.
Patent GB-1444775-A (GB)
Title: Magnesium hydroxide suspension
IPC: C09K23/00
Filed: 1973-10-17
Abstract: 1444775 Magnesium hydroxide suspension SHIN NIHON KAGAKU KOGYO KK 17 Oct 1973 [17 Oct 1972] 48426/73 Heading C1A An aqueous suspension of magnesium hydroxide with a solids concentration of 35-60% and viscosity of at most 10,000 cp. contains 0À5% or more, on the weight of Mg(OH) 2 , of a sodium naphthalene sulphonate surface active agent. The surface active agent may be a sodium alkyl naphthalene sulphonate where the alkyl group has at least 3 carbon atoms or a formaldehyde condensate of sodium # raphthalene sulphonate with a degree of condensation of about 10. The suspension may be formed by blending a water-containing magnesium hydroxide cake with the surface active agent; the cake may be formed by sedimentation, filtration or centrifugation.
Patent GB-1532500-A (GB)
Title: Web winding apparatus
IPC: B65H18/16
Filed: 1976-11-22
Abstract: 1532500 Web winding NCR CORP 22 Nov 1976 [8 March 1976 8 Dec 1975] 48559/76 Heading B8R A web winding apparatus has a first support means (frame) 64, 66, carrying a drive means (friction roller) 68 for a web roll 72 which is carried by second support means (arms) 88, 90 biased by springs 116 to force the roll into contact with the roller 68, the arms 88 being mounted for slidable movement, against the spring bias, relative to the frame 64, 66 during winding of the roll and pivotable movement for removal of said roll.
Patent GB-1414340-A (GB)
Title: Electrical display devices
IPC: H04N3/14
Filed: 1973-10-22
Abstract: 1414340 Matrix displays MULLARD Ltd 22 Oct 1973 49016/73 Headings G5C and G4H A display device comprises an array 1 of light emitting elements GDS energized at one potential and maintained at a lower potential at the intersections of crossed conductor arrays and an addressing circuit arranged to ignite a complete row or column of elements and erase unwanted elements, the circuit including two sub-matrices 2, 5 of circuits for supplying the erase pulses, each matrix comprising, for each conductor of the corresponding conductor array a cross point output CP1-56 formed by the interconnection via diodes D1, D2 of a unique pair of driver circuits ER1-8, EC1-7, EER1-5, EEG1-16, the diodes being poled to isolate the outputs from each other. Igniting all cells on a row allows the use of higher potentials since the need not to ignite non selected cells is removed. Each driver circuit of submatrix 5 comprises a normally conductive PNP transistor 13, a diode 14 resistor 15 and capacitor 16. Applying control pulses renders the transistors non- conductive and alters the voltages applied via diodes DD1, DD2 to a row of elements GDS. The transistors of the driver circuits of submatrix 2 are NPN type. Write driver circuits W1-8 are connected in parallel with erase driver circuits ER1-8. The addressing circuit includes counters (8), (9), (10), Fig. 3 (not shown), control logic (11) and an addressing keyboard device (12). In operation each row of characters is written in 7 rows of elements and initially the elements in these 7 rows are ignited. Unwanted elements are then erased column by column for each character sequentially. The elements are glow discharge cells or L.E.Ds.
Patent GB-1322526-A (GB)
Title: Herbicidal thiophosphoric esters
IPC: C07F9/165
Filed: 1970-10-16
Abstract: 1322526 Herbicidal thiophosphoric acid esters BADISCHE ANILIN- & SODA-FABRIK AG 16 Oct 1970 [18 Oct 1969] 49230/70 Heading C2P  The invention comprises thiophosphoric acid esters of the formula wherein R<SP>1</SP> and R<SP>2</SP> are the same or different and each denotes an alkyl, alkenyl, alkynyl, alkoxyalkyl or cycloalkyl group having up to 6 carbon atoms, benzyl, or an aryl group, or R<SP>1</SP> and R<SP>2</SP> are groups which together with the two O atoms and the P atom form a 5- or 6-membered heterocyclic ring, and X is O or S. They are obtained by reacting a salt M<SP>+</SP>S<SP>-</SP>P(X)(OR<SP>1</SP>)(OR<SP>2</SP>), wherein M is the equivalent of a cation with N-isobutynyl chloroacetanilide, suitably in an inert organic solvent or in water or a water-organic solvent mixture. The cation M is suitably Na, K, or (R) 3 NH where R is H, CH 3 , C 2 H 5 , npropyl, or isopropyl, and if desired the salt may be formed in situ from the corresponding acid and the appropriate alkali, amine, or ammonia. The products have herbicidal properties and may be used as active ingredients in conventional solid or liquid herbidical compositions. Other herbicides, or insecticides, fungicides, bactericides, or fertilizers may also be present.
Patent GB-1444166-A (GB)
Title: Manufacture of 3,4,9,10-perylenetetracarboxylic acid dia hydride pigments having high tinctorial strength
IPC: C09B67/00
Filed: 1973-10-23
Abstract: 1444166 Preparing perylenetetracarboxylic acid dianhydride pigments BASF AG 23 Oct 1973 [24 Oct 1972 26 Oct 1972] 49255/73 Heading C4P Deeply coloured 3,4,9,10 - perylenetetracarboxylic acid dianhydride pigment is prepared by dry grinding the raw pigment optionally in presence of a solid grinding aid to provide ground pigment having an average primary particle size of 0.01 to 1 Á which is then treated with 80- 95% by weight sulphuric acid, a primary or tertiary aromatic amine which is liquid at the treatment temperature or with a polar aprotic organic solvent as a swelling agent to improve the tinctorial strength of the pigment after which the swelling agent is removed. Dimetuylformamide, quinoline, p-chloroaniline, anisidine and phenetidine may be used as preferred swelling agents at 50-200‹ C. With sulphuric acid the treatment is preferably carried out at 10-100‹ C. or at room temperature. The dry grinding is preferably carried out with iron balls 0À1 to 3 cm. in diameter in a ball mill or vibration mill and the swelling process is carried out until the average primary particle size has increased 2-5 times and is preferably within the range 0À05 to 0À1 Á. The weight ratio pigment: swelling agent is preferably 1 : 0À5 to 1 :5. The pigments are used to colour nitro-, cellulose-, polyester-, epoxy resin-, silicone- and alkyd resin lacquers and varnishes and to colour p.v.c., polyethylene, polystyrene, polyurethanes, polyamides and printing inks.
Patent GB-1065059-A (GB)
Title: Improvements relating to storage battery electrodes
IPC: H01M4/54
Filed: 1963-12-13
Abstract: 1,065,059. Accumulators. ELECTRIC STORAGE BATTERY CO. Dec. 13, 1963 [Dec. 17, 1962], No. 49397/63. Heading H1B. Silver electrodes for a storage battery incorporate 0À5-6% weight of an oxide of cadmium, magnesium or aluminium. The electrodes are used opposite zinc or cadmium negatives in a KOH electrolyte.
Patent GB-1524249-A (GB)
Title: Method and an arrangement for fault location in a glass fibre light guide
IPC: H04B10/43
Filed: 1975-12-02
Abstract: 1524249 Testing optical fibres LICENTIA PATENT VERWALTUNGS GmbH 2 Dec 1975 [7 Dec 1974] 49506/75 Heading G1A [Also in Divisions H1 and H4]  The position of a fault in an optical fibre is determined by passing a laser pulse along the fibre and directing any light reflected by the fault back into the laser; the laser may then either amplify the reflected light or may act as a photo-detector. In Fig. 1, the laser body 1 passes a pulse into fibre 2, and amplifies light reflected from the fault 3. The amplified light is received by a separate detector 4. This detector also receives a laser pulse from the left hand end of the laser when the initial pulse is passed into the fibre, so that the time interval between pulses received by the detector indicates the fault position. The laser may have a semi-conductor or neodymium doped active medium; in either case it is pumped to just below its lasing threshold so that application of an electric or optical pulse to the laser causes emission of a laser pulse. The detector is preferably an avalanche diode. In Fig. 2, a semi-conductor laser 8 passes a pulse into fibre 2, and also serves as a detector for the reflected light. The laser pulse is emitted in response to a pulse on line 13, and then the diode is reverse biased by applying a suitable voltage to terminal 10. In this state the diode detects the reflected light, and produces a signal which passes via the capacitor 9 and diode 11 to line 15. A timber 12 determines the interval between the  pulse on line 15 and the earlier pulse on line 13  (supplied via line 14). The diodes 11, capacitor 9 and inductor 16 ensure all the pulses pass to the correct destinations.
Patent GB-1224690-A (GB)
Title: Sailing boat with improved mast structure
Inventor: BAUDOU ANTOINE JOSEPH GEORGE
IPC: B63H9/06
Filed: 1969-10-08
Abstract: 1,224,690. Masts and sails. A. J. G. BAUDOU. 8 Oct., 1969 [8 Oct., 1968], No. 49524/69. Heading B7V. A sailing boat mast structure comprises two parallel masts 10, 10a each of which is mounted for rotation about its own axis in a rigid support capable of rotating freely about supporting shaft 1. Two sails are each fitted between a mast and a boom perpendicular to the mast, and the shaft 1 is fixed to the hull at a point in the longitudinal median plane of the hull and extends vertically or at a slight angle to the vertical. In Fig. 4 a rectangular sail is shown hoisted between the two masts, the assembly of the three sails 11, 11a and 11b then forming a good spinnaker with a following wind.