baber/WOPTO huggingface dataset:
Patent GB-1058556-A (GB)
Abstract: 1,058,556. Loud-speaking telephones. GYLLING & CO. A.B. March 18, 1964 [March 19, 1963], No. 11550/64. Headings H4K and H4R. In a two-way speech amplifier, e.g. for a loudspeaking telephone, in which attenuators are arranged in the two channels the attenuation of the attenuators being differentially varied in dependence on the signals applied to the attenuators, the attenuators include the collector-emitter paths of a pair of transistors which have at least part of their emitter loads common so that, as the control signals applied to the bases of the transistors change the collector currents differentially vary and thus differentially vary the collector-emitter impedances of the two transistors, one of which is connected in the attenuator circuit of each path. Fig. 5 shows a preferred embodiment of the variable gain control stages of a loud-speaking telephone in which transistors T3 and T4 are included one in each amplifier path of the apparatus. The emitter and collector loads of transistors T3 and T4 are all shunted by the collectoremitter paths of further transistors TA and TB connected according to the invention, i.e. TA and TB have a portion of their emitter loads common and are fed on the bases with control signals Vs superimposed on a bias potential Vf. In addition a third transistor Tc is connected with its emitter current flowing through the common emitter resistor so as to provide, in the transistor which is switched on by the control signal, a greater change in current, and therefore a greater change in impedance, than would be obtained from the doubling of the current which would occur if only two transistors were used. With no control signal applied the current through TA and TB is the same and the circuits therefore produce a mean attenuation in both channels. Capacitors are connected between the collector and base electrodes of TA and TB to provide negative feedback at AC while further capacitors connected between the emitters and a point of fixed potential by-pass the emitter resistors so that they are effective only at D.C.
Patent GB-1095566-A (GB)
IPC: B22D13/10
Abstract: 1,095,566. Centrifugal casting machines. KUBOTA TEKKO KABUSHIKI KAISHA. April 12, 1965 [April 11, 1964], No. 15520/65. Heading B3F. [Also in Division F2] In a centrifugal casting apparatus in which a mould is supported and rotated by driven rollers the construction of the rollers comprises a body portion 3 and a peripheral tyre portion 1 and between which is located a resilient material to prevent vibration transmission. The tyre portion is of T-section having a central flange 2 extending radially inwards and is secured to the body portion by resiliently mounted pins 4 which pass through the body portion on one side of the flange 2 and through a retaining ring 5 on the other side. Annular resilient members 8, 8<SP>1</SP> and 9 are located between the abutting surfaces of the shoulders of the tyre and body portions.
Patent GB-1226497-A (GB)
IPC: G21C21/02
Filed: 1969-03-27
Abstract: 1,226,497. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 9 March, 1970 [27 March, 1969], No. 16244/69. Heading G6C. A fuel element comprises a rigid container containing nuclear fuel and filler material, the internal volume of the container having symmetry about a central axis and the contents having been compacted by centrifugal force engendered by rotating the container about an axis normal to the axis of symmetry. The container may be a sphere 1 formed from nuclear grade graphite and having a radial bore 2 leading into a spherical cavity 3. Ceramic fuel particles with a fission product retaining coating are given a salt deformable overcoating of carbonaceous powder containing a proportion of synthetic resin binder and then fed into a funnel 7 which distributes them through horizontal conduits 5 into graphite spheres 1. The spheres 1 are rotated at high speed about a vertical axis by means of a shaft 8 and electric motor 9. Voids which would otherwise form between the particles are filled by the deformation of the outer coatings on adjacent particles under the centrifugal pressure. The bores 2 are finally closed by screw plugs. The cavities may alternatively be cylindrical in shape, coaxial with the bores through which the particles are introduced.
Patent GB-1226566-A (GB)
IPC: C08F14/18
Filed: 1968-04-03
Abstract: 1,226,566. Perfluorinated polyethers. MONTECATINI EDISON S.p.A. 3 April, 1968 [4 April, 1967], No. 16100/68. Heading C2C. [Also in Divisions C3, C4 and C5] The invention comprises liquid perfluorinated polyethers of the general formula in which the C 3 F 6  represents the perfluoro-isopropyl radical, and the three different units are distributed at random along the chain, p and/or r can be zero, p + q + r is 2 to 200, p/(q + r) is 0 to 50, r/q is 0 to 10, X and Y are CF 3 , C 2 F 5 , C 3 F 7  or CF(CF 2 )-O-CF 3 , but are CF 3  when p and r are zero and are CF 3  or C 2 F 5  when only p is zero. They are prepared by reacting fluorine with a polyether of the formula in which when s is not zero, one of W and Z is CF 3 , CF 3 -O-CF(CF 3 ), COF, CF 2 COF, CF(CF 3 )COF, CF 2 COCF 3 , CF 2 C(OH) 2 CF 3 , CF 2 H or CF(CF 3 )H and the other is COF, CF 2 COF, CF(CF 3 )COF, CF 2 COCF 3 , CH 2 C(OH) 2 - CF 3 , CF 2 H or CF(CF 3 )H; when s is zero one of W and Z is CF 3 , COF, CF 2 COF or CF 2 H and the other is COF, CF 2 COF or CF 2 H; u and v can be zero; O v  represents peroxidic oxygen linked randomly to the oxyperfluoroalkylene units; s, t and u being equal to or up to 10% higher than p, q and r in the products. Temperatures are preferably between 120‹ and 320‹ C. The starting materials are prepared by passing oxygen through liquid hexafluoropropylene under U.V. light. The products are useful as lubricants, hydraulic fluids, solvents, dielectric media and heat-transfer agents.
Patent GB-1228015-A (GB)
IPC: C25D15/00
Filed: 1968-06-26
Abstract: 1,228,015. Composite reinforced body. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 26 June, 1968 [28 June, 1967], No. 30578/68. Heading B5A. [Also in Division B3] A composite body comprises a carrier material having a plurality of aligned long filaments and short fibres embedded in it. It may be made by (i) aligning the filaments in a mould and pouring the liquid carrier material containing short fibres over the filaments to cover them and fill the interstices between them, (ii) by applying the fibres to the aligned filaments in a mould and then applying the carrier material, or by (iii) pouring a composition on to a material reinforced with filaments, the composition solidifying to form short fibres growing unidirecdirectionally. The filaments may be covered with a thin film of the carrier before pouring, e.g. by passing the filaments through a bath of carrier material or by deposition by electrolytic, vacuum vaporization or vapour deposition techniques. The carrier material may be metal or plastics. The interstices may be filled by electrolytic deposition of carrier material.
Patent GB-1229575-A (GB)
IPC: A63B9/00
Filed: 1967-06-29
Abstract: 1,229,575. Clamps. BLAKE QUIGLEY TOYS Ltd. 28 June, 1968, No. 30061/67. Heading E2B. [Also in Division A6] In a climbing frame comprising a number of pre-formed ladder like frames 10 each having longitudinal side members of rectangular cross-section and rungs of circular cross-section, the frames being preferably arranged in pairs with interconnecting transverse bars 11, additional frames, e.g. the horizontal ladder frame 12, are secured to the frames 10 by clamps each comprising a pair of opposed plates 1, 2 which are slidably mounted on a bolt 7 passing through apertures 6 in the plates, the plates defining between them, by channels 3, a circular cavity and, by channels 4, a rectangular cavity, whereby the side members of the frame 12 may be connected to the rungs of frames 10. Thus, the climbing frame shown may be produced as a kit of parts comprising the frames 10 and 12 and the clamps 16, together with additional items such as access ladders 15, swing 13 and shoot 14 which may be secured by additional clamps such as the clamps 16.
Patent GB-1229988-A (GB)
IPC: A61K39/08
Filed: 1968-05-06
Abstract: 1,229,988. Tetanus toxoid and vaccine. BEHRINGWERKE A.G. 6 May, 1968 [6 May, 1967], No. 21278/68. Heading A5B. A treated tetanus toxoid is prepared by treating tetanus toxoid with pepsin in the presence of urea at pH 1.5 to 6.0 and at 0 to 45C, wherein the pepsin splits the toxoid into one or two components, one being from 40 to 100% and the other being from 60 to 0% of the total toxoid having sedimentation coefficients of 5.5 to 6.35 and 0.8 to 1.05 respectively. Preferably the urea concentration is from 3 to 6 mols per litre and the pepsin concentration is from 0.5 to 3.0 mg per 100 mg of tetanus toxoid used. A tetanus vaccine may contain the treated tetanus toxoid preferably purified in a known manner by means of a protein precipitating agent and worked up to a vaccine.
Patent GB-1231665-A (GB)
IPC: H02H5/04
Filed: 1968-08-08
Abstract: 1,231,665. Semi-conductor devices. TEXAS INSTRUMENTS Inc. 8 Aug., 1968 [28 Aug., 1967], No. 37907/68. Heading H1K. The disclosure is identical with that of Specification 1,230,002 but the claims relate to a current sensor device 15, comprising a semi-conductor body 35 situated between a central electrode 33 and a cylindrical shell electrode 31. The resistance of the body 35 between the electrodes 31, 33 varies as a function of current flowing through the shell 31 between terminals 41, 43, due to the increase in temperature of the body 35 resulting from heat generated in the shell 31 by the current.
Patent GB-1238091-A (GB)
IPC: C04B7/40
Filed: 1969-04-08
Abstract: 1,238,091. Cement raw materials; flocculating. SANDOZ Ltd. 8 April, 1969 [10 April, 1968], No. 17898/69. Headings C1A, C1C and C1H. An aid for filtering water-suspended, swellable silicate minerals, e.g. zircon, cordierite, steatite, talc, kaolin, porcelain paste or slurries of limestone-clay or of lime marl used as cement raw materials consists of a water-soluble, basic nitrogen-containing compound used in an amount of 0À005-0À2% based on the weight of the solids. In the treatment of cement raw materials the filtration aid can be added to a limestone-clay slurry or to a clay slurry to which the limestone is then added. Suitable nitrogen containing compounds can be prepared by condensing formaldehyde with a compound of the formula wherein R 1  represents H,-CN or -CO.NH 2  or by condensing an aliphatic polyamine with cyanamide, dicyanamide, dicyandiamidine or guanidine.
Patent GB-1238690-A (GB)
IPC: F02F1/10
Filed: 1968-12-10
Abstract: 1,238,690. Cooling cylinders. DAIMLERBENZ A.G. Dec.10, 1968 [Dec. 13, 1967], No. 58671/68. Heading F1B. A slot 19 for cooling water is formed in the part of the dividing wall 11 between adjacent cylinders adjacent the cylinder head. The slot extends into bores 17 connected with the water jacket and also into the threaded bores 13 receiving the ends of the cylinder head bolts 14. The slot 19 may have an open top, closed by the cylinder head jacket, or its top may be closed by welding. In a modification the slot is replaced by a pair of horizontal bores. In Fig.3 the members 20 for receiving the cylinder head bolts 14 are situated midway along the cooling jacket 18 and the upper ends of the cylinder head bolt bores 23 in the cylinder head are closed by jackets 24.
Patent GB-1238742-A (GB)
IPC: C08H99/00
Filed: 1969-08-29
Abstract: 1,238,742. Rotary drum filter. MITSUI TOATSU CHEMICALS Inc. 24 Aug., 1969 [30 Dec., 1968], No. 43224/69. Heading B1D. [Also in Divisions C5 and E1] An apparatus for separating the fibrous component of an aqueous peat slurry from the humic component comprises a horizontal cylindrical screen rotatable about its longitudinal axis and mounted transversely of a trough containing a flowing stream of the slurry. The fibres override the screen, the humic component passing into the cylinder and emerging out of the ends thereof over weirs in the trough walls.
Patent GB-1252059-A (GB)
IPC: C21C7/06
Filed: 1969-10-22
Abstract: 1,252,059. Aluminium semi-killed steel. NIPPON KOKAN K.K. Oct. 22, 1969 [Oct. 30, 1968], No.51769/69. Heading C7D. A method of manufacturing aluminium semikilled steel comprises the following steps: (a) determining the oxygen content in the steel bath of the ladle from the carbon content of the tapped molten steel, (b) calculating from the oxygen content the amount of aluminium to be added, (c) providing an amount of aluminium or aluminium alloy wire rod based on the above calculated amount, the wire rod having a diameter of at least 5 mm and (d) forcing the wire rod into the molten bath at a speed of at least 3 metres per sec. The bath may contain Si, Al/Mg, Al/Ca, Al/Mg/Ca, Al/Zn and Al/Pb alloy wire rod may also be used.
Patent GB-1252068-A (GB)
IPC: C08L27/06
Filed: 1969-03-24
Abstract: 1,252,068. Vulcanized elastomer compositions. ESSO RESEARCH & ENG. CO. 12 March, 1970 [24 March, 1969], No. 15231/69. Heading C3P. Vulcanized elastomeric composition comprising a terpolymer of at least two C 2-6  monoolefins and a termonomer in admixture with a thermoplastic vinyl polymer, may be prepared by blending and fluxing the terpolymer and vinyl chloride polymer at 155‹ to 175‹ C. and thereafter curing. The terpolymer may be derived from ethylene, propylene, butene- 1 and hexene-1, and the termonomer may be dicyclopentadiene, 1,5-hexadiene, 1,5-octadiene or a 2- alkyl norbornadiene. The vinyl chloride polymer may be a polymer of vinyl chloride with or without vinyl acetate or vinyl stearate, vinylidene chloride, acrylonitrile, methacrylonitrile, or alkyl acrylates, methacrylates, fumarates or maleates. Curing may be effected with bromomethyl alkylated phenolic resins, peroxides or sulphur and accelerators. The compositions may also contain plasticizers, fillers, softeners, stabilizers and blowing agents and may be made into gaskets, cable jackets, shoe soles, strips, sheets and car mats. In examples compositions of EPDM rubber, polyvinyl chloride, tribasic lead sulphate, dibasic lead stearate, carbon black, mineral oil, zinc oxide and stearic acid, optionally antimony trioxide or hydrated 'alumina, are cured with (1) sulphur/accelerator and (2) peroxide/sulphur cure systems.
Patent GB-1256879-A (GB)
IPC: C03B35/24
Filed: 1968-04-25
Abstract: 1,256,879. Conveyers. TRIPLEX SAFETY GLASS CO. Ltd., P. H. RICHARDS and C. M. BENNETT. 11 April, 1969 [25 April, 1968], No. 19708/68. Heading B7L. [Also in Division C1] In order to transfer trolleys 4 between adjacent ends of first and second conveyer runs 2, 3, a pair of driven sprocket wheels 20, 21 is provided, each trolley 4 having guide elements 17, 18, adjacent opposite ends which are engage - able between pairs of teeth of the sprocket wheels 20, 21, arcuate guide members 23 engaging the guide elements 17, 18 to prevent their disengagement from the sprocket wheels during transfer of each trolley 4. The trolleys 4 are driven along the conveyer runs 2, 3 by toothed wheels 7 mounted on shafts 8 and engaging with a length of roller chain 11 extending longitudinally along the upper surface of each trolley 4, the trollies being guided by the guide elements 17, 18, in the form of flanged rollers which engage in slots 15, 26 formed between pairs of guide rails 12, 14, and 24, 25 respectively. The guide elements 17, 18 on one side of the trolley 4 have extensions in the form of pivoted arms 5 which may be used to move sheets of glass S through an oven 1 (see Division C1). At the end of each trolley run the guide rails 12 and 24 are joined to the arcuate guide members 23 to form a continuous guide rail, the guide rails 14 and 25 being bent to form sections 14<SP>1</SP>, 25<SP>1</SP> flanking the sprocket wheels 20, 21 and terminating in bevelled end faces 14a, 25a. The first link 11a of each length of chain 11 is resiliently mounted on its trolley 4 to facilitate engagement with the drive wheels 11. Further guide rails (not shown) may be provided for guiding the pivoted arms 5 around the transfer devices.
Patent GB-1258660-A (GB)
IPC: H01L21/60
Filed: 1969-12-19
Abstract: 1,258,660. Printed circuits; resistors. NIPPON TOKI K.K. 19 Dec., 1969, No. 61963/69. Headings H1R and H1S. A transfer paper for printed wiring consisting of a base paper 1, an attached adhesive layer 2, a conductive pattern and/or circuit (3a, 3b) on the adhesive layer and a carrier layer 4. The adhesive layer 2 may be water soluble (e.g. polyvinyl alcohol, dextrin) or pressure sensitive. The conductive pattern 3a may be screen printed with a conductive paste of glass frit and conductive powder (e.g. silver, palladium) in an organic binder and the circuit may include a resistor 3b, screen printed with resistive paste (e.g. glass frit, silver, palladium, silver oxide and palladium oxide). The layer 4 may be an organic paint film, sprayed on to the conductive pattern, composed of acrylic resin such as 50% by weight of metacrylic ester and 50% of thinner. The paper 1 is removed by softening with water or stripping as required and the conductors and the carrier layer are applied to a permanent substrate (e.g. alumina, beryllia) and subsequently baked at 500 C. to remove the carrier layer and the organic binders. Alternatively, the paper 1 may have a thinner paper (e.g. rice paper) secured between the circuit and sand paper 1 by soluble adhesives. Paper 1 is removed as before and the circuit applied to a substrate with the thin paper uppermost, the paper then being removed. On firing the carrier layer reduces in volume allowing the printed circuit pattern to descend and attach itself to the substrate. In a multilayer circuit paper, the carrier layer is replaced by an insulating layer which covers the necessary portions of the circuit pattern before printing the next circuit layer. The carrier layer is added to form the last layer. A double-sided printed circuit may be produced by using a transfer circuit paper larger than the substrate and partly wrapped round on to the lower surface.
Patent GB-1259309-A (GB)
IPC: B21B37/16
Filed: 1969-02-03
Abstract: 1,259,309. Automatic tension control. WESTINGHOUSE ELECTRIC CORP. Feb.3, 1969 [Feb. 20, 1968], No. 5646/69. Heading G3R. The tension in strip material passing between successive stands of a rolling mill is compared with a desired tension, any error being effective to selectively control screwdown and/or roll speed of one of the stands according to a measured value of strip speed. In Fig. 1, steel strip passes between the rolls of stands 1-5 of a cold rolling mill and is wound up on a reel 36. Tension in the strip between stands 2 and 3 is detected by a looper roll 14 producing electrical signals for comparison with signals from a potentiometer 18 set to correspond to desired tension. During initial slow-speed threading of the strip through the rolls, tension error exceeding a predetermined value determined by a biased relay is effective through a closed switch 20 to control a motor-operated potentiometer 22 adjusting the speed of a motor M driving the rolls of stand 2 until tension error is reduced to a lower predetermined value. When the strip reaches reel 36, the speed of the mill is increased to its normal value and switch 20 is opened and switch 26 closed so that tension error is thereafter corrected by control of the screwdown of stand 3. Similar control systems are provided for the other pairs of adjacent stands. At the start of a run each roll speed adjusting potentiometer is set to produce an appropriate speed for the motor M driving each set of rolls and speed is later increased to normal by increasing the voltage applied to these potentiometers. Changeover of switches 20, 26 may be produced by a push button which is operated to raise mill speed to normal or by a tachometer generator associated with stand 5. Load cells, e. g. 80, 82 associated with the rolls of each stand ensure that the control system associated with each pair of stands is not rendered effective to replace manual control unless the strip is engaged by both stands. Thickness of the strip leaving stands 1 and 5 may be maintained at desired values by X-ray gauges X 1 , X 5  controlling screwdown of stands 1 and 5 and the speed of stand 5. The possibility of controlling tension by simultaneous control of roll speed and screwdown over an intermediate range of mill speeds is referred to. Maintenance of constant mass flow as determined by the product of strip thickness and velocity is referred to.
Patent GB-1265357-A (GB)
IPC: C09B67/22
Filed: 1969-12-09
Abstract: 1,265,357. Water-insoluble disazo dyestuff mixtures. FARBWERKE HOECHST A.G. 9 Dec., 1969 [9 Dec., 1968], No. 60073/69. Heading C4P. Novel dyestuff mixtures consisting of mixtures of dyestuffs of the Formulae (A), (B) and (C) are prepared by coupling tetrazotized 4,4<SP>1</SP>- diamino-3,3<SP>1</SP>-dichlorodiphenyl with a mixture of 1-phenyl-3-methylpyrazolone-(5) and 1-p-tolyl- 3-methyl-pyrazolone-(5) in a molar ratio of tetrazotized diamine to pyrazolone mixture of 1 : 2. The mixtures vary in shade from yellowish orange to reddish orange depending on the proportions of the two pyrazolones in the mixtures thereof and the order of mixing when coupling. A dispersant such as an addition product of about 20 moles of ethylene oxide and 1 mole of octadecyl alcohol may be present in the coupling reaction.
Patent GB-1266249-A (GB)
IPC: E04C2/04
Filed: 1970-08-11
Abstract: 1,266,249. Lightweight concrete. COMMISSARIAT A L'ENERGIE ATOMIQUE. 11 Aug., 1970 [13 Aug., 1969], No. 38659/70. Heading C1H. A lightweight concrete is impregnated by a polymerizable substance or mixture to a depth of 0À5 to 5 mms. for at least a portion of its surface, and then exposed to ions or heated to form and harden the polymer. Acrylates, styrene, vinyls (acetate carbazole and chloride) epoxy resins, polyesters and graft polymers are suitable impregnants. A prepolymer in a monomer diluent can also be used, the concrete comprising sand, cement, lime and aluminium.
Patent GB-1266834-A (GB)
IPC: B66C1/12
Filed: 1970-07-01
Abstract: 1,266,834. Loading nets. EASTERN PLANTATION AGENCY SDN BERHAD. 1 July, 1970, No. 31881/70. Heading B8H. A sling for use in the transportation of fruit, e.g. fruit from the oil palm, comprises a first wide-mesh rectangular netting 2 on which a second rectangle of fish-net 10 is superimposed, the rectangles being connected by lacing cords 12 and having a rope margin 4, each corner of the sling being joined to a sling rope (6), Fig. 1 (not shown), whose other ends are connected to rings (8) which permit the sling to be attached to the hook of a jib crane when loading the fruit into a vehicle.
Patent GB-1296023-A (GB)
IPC: G02B25/00
Filed: 1970-01-09
Abstract: 1296023 Microscope eye-pieces OLYMPUS OPTICAL CO Ltd 9 Jan 1970 1070/70 Heading G2J An ultra-wide microscope eye-piece has airspaced field and eye lenses wherein the field lens comprises a positive doublet the cemented surfaces of which are achromatic, and the eye lens comprises a front doublet consistent of a double concave element and a double convex element, the negative element being nearer the objective and two positive lens elements behind the doublet, wherein for a focal length of the eye-piece of F then the following inequalities apply for the eye lens. Optical data for the eye-piece is given.
Patent GB-1296152-A (GB)
IPC: H01L29/73
Filed: 1970-07-01
Abstract: 1296152 Semi-conductor devices MITSUMI ELECTRIC CO Ltd 1 July 1970 [1 July 1969 4 Dec 1969] 31883/70 Heading H1K An alloy junction transistor, having a grounded base current amplification factor α greater than one, comprises a metal emitter impurity, and a collector impurity consisting of an indium-antimony alloy containing from 0À1% to 0À01% by weight of antimony, the base being an N-type germanium wafer. The emitter impurity may be indium or gallium, and lead and tin may be added to the emitter and collector impurities respectively. Following alloying of the impurities to the base, at a temperature high enough to cause all the contact surfaces to be in the liquid phase, the device is cooled slowly following an upwardly convex cooling curve. The indium-antimony alloy forms a hook shaped collector-base junction, the indium having greater segregation than the antimony.