baber/WOPTO huggingface dataset:
Patent GB-1395479-A (GB)
Title: Push button switch
IPC: H04M1/23
Filed: 1973-05-04
Abstract: 1395479 Retractive switches STANDARD TELEPHONES & CABLES Ltd 4 May 1973 21246/73 Addition to 1309710 Heading H1N The switch of this Specification is generally similar to that of the parent Specification but the "N"-shaped springs 6, 7 acting on button 1 have extensions 8 which engage stationary tabs or ledges 10 after springs 6 and 7 have gone overcentre. These extensions 8 thus provide stress in the springs 6, 7 tending to restore the button 1 and act to assist the contact springs in providing retraction. The button 1 also has a camming ramp 3 which acts on an associated ramp (28, Figs. 8 and 9, not shown) of a common bar member (21) such that, in a matrix assembly, depression of any button 1 cams member (21) to actuate a common contact spring set (25, Figs. 4 and 5, not shown).
Patent GB-696986-A (GB)
Title: Improvements in or relating to stabilized papain composition and its preparation
IPC: C12N9/96
Filed: 1951-09-10
Abstract: The invention comprises a stable papain composition of high proteolytic activity having incorporated therein a minor quantity (by weight-based on the original latex), e.g. 0.1 to 3 per cent of sodium bisulphite.  Additionally there may be present a phenol, e.g. thymol.
Patent GB-850523-A (GB)
Title: Preparation of elastomers
Inventor: COOPER WILFRID
IPC: C08F279/02
Filed: 1956-07-10
Abstract: A polymer modified rubber is prepared by irradiating with light having a wavelength in the region of 2,000   to 7,000   a natural or synthetic rubber latex having dispersed therein a monomer containing a CH2=C< group and a photosensitiser, e.g. benzil, benzoyl peroxide, chloranthraquinone, p-chlorobenzene-diazo-p-chlorobenzene sulphonate, diacetyl, N-bromosuccinimide and dichloramine B.  Monomers specified are methyl methacrylate, vinyl chloride acrylic acid, acrylonitrile, styrene and butadiene and mixtures thereof.  As a synthetic rubber there is specified a butadiene-styrene copolymer.  The rubber latex preferably contains a stabilizer against coagulation, e.g. casein or oleic acid.
Patent GB-813905-A (GB)
Title: Polymerisation process
Inventor: HUTCHINSON HENRY MALCOLM
IPC: C07D215/22
Filed: 1955-07-22
Abstract: Catalysts for use in the polymerization of olefins (see Group IV (a)) are formed by mixing a halide of titanium, zirconium or vanadium with a tin compound SnY4, Y3SnX or Y2XnX2, wherein X represents alkyl groups of not more than six carbon atoms and X represents halogen atoms.  The catalyst may be preformed or formed in the presence of monomer, and preferred catalyst component molar ratios are given. Specified components are tin-tetraethyl-, tetraisopropyl- and triisopropyl-bromide, titanium-trichloride and tetrachloride and zirconium tetrachloride.  Diluents which may be present are petroleum ether, pentane, hexane, cyclohexane, tetrahydronaphthalene, decahydronaphthalene, paraffins, benzene, xylene, dichlorobenzene, chlorinated naphthalene and mixtures thereof.  After polymerization, catalyst residues may be removed from the products with methanol and/or methanolic hydrochloric acid.ALSO:Ethylene and/or a -olefins are polymerized by batchwise or continuous processes comprising contacting the monomers, in the absence of conjugated dienes, with a catalyst formed by mixing a halide of titanium, zirconium or vanadium with a tin compound SnY4, Y3SnX or Y2SnX2, wherein Y represents alkyl groups of not more than six carbon atoms and X represents halogen atoms.  Specified olefins are propylene, butene, pentene and hexene and particular catalyst components disclosed are tin-tetraethyl, -tetraisopropyl and -triisopropyl bromide, titanium-trichloride and -tetrachloride, and zirconium tetrachloride.  Catalyst may be preformed or formed in the presence of the monomer and preferred catalyst component molar ratios are given.  The polymerization may be in bulk or in the presence of diluents such as petroleum ether, pentane, hexane, cyclohexane, tetrahydronaphthalene, decahydronaphthalene, paraffins, benzene, xylene, dichlorobenzene, chlorinated naphthalene and mixtures thereof, and these may also be present during the catalyst formation.  Monomer may be added during the polymerization.  The high molecular weight products obtained may be purified by treatment with methanol and/or methanolic hydrochloric acid.
Patent GB-1496965-A (GB)
Title: Sheet feeding apparatus
IPC: G03G15/00
Filed: 1975-05-19
Abstract: 1496965 Feeding sheets XEROX CORP 19 May 1975 [5 Sept 1974] 21332/75 Heading B8R The subject-matter is the same as that of Specification 1,496,734, but the claims are directed to means for flattening curled edges of the sheet.
Patent GB-652247-A (GB)
Title: Magnetic induction accelerator
IPC: H05H11/00
Filed: 1947-08-06
Abstract: 652,247. Magnetic induction accelerators. AKT.-GES. BROWN, BOVERI, & CIE. Aug. 6, 1947, No. 21442. Convention date, Aug. 6, 1946. [Class 39 (i)] In a magnetic induction accelerator having opposed electron streams the phase relationship between which corresponds with that of the supply voltage used for producing the accelerating fields, means are provided whereby the final electron velocity of each beam is separately adjustable either by control of the electron current or of the time during which the beam is exposed to the field. A betatron 1, Fig. 1, in which X-rays 5 are generated at an anticathode 3, has separate cathodes 21, 2<SP>11</SP>, the electron streams from which can be separately controlled through separate circuits, one of which is shown, and comprises phase-shifter 10 adapted to discharge condenser 9 through the discharge tube 8, whereby the cathode 211 is momentarily biassed with respect to earth. The cathodes are heated through transformers 6 supplied through a variable resistance 7. In modifications, the impulses may be applied to control grids and each tube 8 may energize a relay, connected in its anode circuit, Fig. 3 (not shown), to switch the condenser 9 into the appropriate grid circuit. In Fig. 2, the electron streams from separate cathodes 21, 211, are controlled by grids 14<SP>1</SP>, 14<SP>11</SP> and members 17<SP>1</SP>, 17<SP>11</SP> are biassed with respect to an earthed member 18 to modify the direction of the streams, and thereby the time they remain within the accelerating field. The electromagnetic field may be increased or weakened to determine the moment when each electron stream is to be ejected by a supplementary winding 38, Fig. 4, the impulses through which for each stream is determined by phase-shifters 31, 32 operating through thyratrons 33, 34 to discharge the condenser 37.
Patent GB-761184-A (GB)
Title: Water-insoluble monoazo dyestuffs
IPC: C09B29/20
Filed: 1954-07-22
Abstract: The invention comprises water-insoluble dyestuffs of formula:-<FORM:0761184/IV(b)/1> which are made by coupling diazotized 1 - amino - 2, 4 - dinitrobenzene with an #s - alkoxyarylamide of 2, 3 - hydroxynaphthoic acid optionally in the presence of a substratum. Arylamides specified are the #s - anisidide and - phenetidide.  The dyestuffs are red to bordeaux pigment dyes and may be used for dyeing lacquers, e.g. nitrocellulose and alkyd lacquers, and in oil paints for graphic printing.  In examples 1 - amino - 2, 4 - dinitrobenzene is diazotized with nitrosyl sulphuric acid and coupled in alkaline solution with (1) 1 - (21, 31 - hydroxy - naphthoylamino) - 2 - ethoxy - and (2) - methoxy - benzenes in the presence of alkyl sulphonate or alkylpolyglycol emulsifiers or calcined titanium dioxide or barium sulphate.  Specification 6379/12 [Class 2(iii) is referred to.
Patent GB-143450-A (GB)
Title: Improvements in artificial legs
IPC: A61F2/60
Filed: 1919-09-02
Abstract: 143,450. Knight, W. H. Sept. 2, 1919. Limbs, artificial.-Comprises a construction of ankle-joint and a knee-lock operated through the rotation of the ankle-joint. The joint comprises an ankle pin a, Fig. 6, with coned ends which fit inside a cylindrical casing c bolted to the foot. Bolts a<1> connect the pin to the skin portion of the leg. Adjustable coned bearings b are screwed into the ends of the cylinder to engage the ends of the pin and are locked in position by metal tongues which grooves in the ends of the bearings and also engage castellations on the ends of the cylinder. Screws d' hold the metal tongues in the acting position and also serve to close lubrication channels d<2>. A flange c<3> formed integral with the cylinder c is connected through the spring coupling g<1>, shown in Fig. 8, to a rod g which actuates the pivoted locking-quadrant n for the knee. When the leg is in the upright position, the joint is free, and the wearer can bend the knee while his foot rests on the ground, as a preliminary to the taking of a forward step. When the foot is raised from the ground to take the step, it falls into the position shown in Fig. 2, and thus draws down the rod g and allows the quadrant to lock the joint by engaging the notch k immediately the shin and thigh are in alinement, as shown in Fig. 2. The foot is then placed on the ground and the limb brought back to the vertical position by the taking of a step with the sound leg. During this movement, the locked artificial limb pivots about the ankle-joint, and the relative upward movement of the foot unlocks the knee-joint.
Patent GB-1293793-A (GB)
Title: Improvements in or relating to valves
Inventor: WALKER BRIAN ALLISON
IPC: B60H1/00
Filed: 1969-04-28
Abstract: 1293793 Valves CHRYSLER UNITED KINGDOM Ltd 17 April 1970 [28 April 1969] 21599/69 Heading F2V A valve comprises a valve body 10 having a throughway 11 for flow of fluid in which two valve plates 12, 13 hinged together at 14 to form a V of variable apex angle are located to regulate the flow. The plates and the hinge may be of polypropylene and the angle of the apex may be adjusted by the mechanism shown or by a crank, a scroll cam or a screw and nut mechanism. The movement of the plates is guided by slots 23, 29 and links 21, 22.
Patent GB-1349708-A (GB)
Title: Horizontal rotary table filter apparatus
IPC: B01D33/00
Filed: 1972-05-09
Abstract: 1349708 Rotary table filter A H PARMENTIER 9 May 1972 [10 May 1971] 21608/72 Heading BID A horizontal rotary table filter comprising a shallow annular vat mounted for rotation, the vat including a bottom plate, a perforated plate mounted above the bottom plate for supporting a filter cloth and inner and outer annular walls extending to a height above the perforated plate has the annular vat formed of a plurality of segment-shaped sections formed together. Each section has a bottom 'a' annular end walls 'b' and 'c' and radial side walls 'd' and 'e' formed by folding from a single flat metal sheet followed by welding to form a liquid-tight container. The annular end walls 'b', 'c' extend above the side walls 'd' and 'e', the side walls being stepped 21, 22 at the top to form a support for a perforated plate 27 which is the support for a filter cloth. Also, adjacent channels 21, 22 when the sections are fixed together along radial walls 'd' and 'e' form a recess for a resilient retaining strip (37, Figs. 5 and 6 not shown) to hold the filter cloth in place. The segments are mounted on annular stays 23. Filtered liquid outlets 28 are provided in each segment. Suitably, the segment floors slope downwardly towards the outlets.
Patent GB-1030913-A (GB)
Title: An improved socket for electric jack plugs
Inventor: GREASLEY ERIC ARTHUR
IPC: H01R24/58
Filed: 1964-05-26
Abstract: 1,030,913. Jacks. PRESSAC Ltd. March 25, 1965 [May 26, 1964], No. 21684/64. Heading H2E. The body of a jack for receiving a jack plug is made in two parts-a plastics moulding 1 with a flange 2 and grooves in which contacts 3, 4 and 5 are located, and a cap 6 with slots through which the contacts pass and which is a snap fit on the part 1 to retain those contacts. The contact 3 is cranked at 3b to. engage the sleeve of an inserted jack plug and the contact 5 is shaped to engage its tip and, on insertion of the plug, is moved away from the contact 4. The ends of the contacts serve as solder tags. A decorative metal bezel 7, Fig. 3 (not shown), may be fitted over the flange 2. The jack may be mounted on a panel by passing it through an aperture and fitting an internally toothed locking washer round the part 1.
Patent GB-1133668-A (GB)
Title: Storage-stable liquid polyisocyanate compositions
IPC: C08G18/72
Filed: 1966-05-16
Abstract: 1,133,668. Polyisocyanate. ALLIED CHEMICAL CORP. 16 May, 1966 [17 May, 1965; 11 June, 1965], No. 21689/66. Heading C2C. [Also in Division C3] A liquid polyisocyanate, said to be storagestable, is prepared by treating a toluenediamine mixture (<1À5 wt. per cent o-) with a molar excess of phosgene, heating to cause complete phosgenation, and removing toluenadiisocyanates by distillation until the residue has an amine equivalent 90-125, a viscosity 20- 10,000 c.p.s. at 25‹ C. and a 20-55 wt. per cent concentration of hexane-insoluble congeneric solutes. The starting material may be recovered as distilland by fractionating a predominantly mdiamine in a column of at least 23 theoretical plates under subatmospheric pressure which is below 120 mm. Hg absolute at the top, while maintaining a reflux ratio of at least 15: 1.
Patent GB-375112-A (GB)
Title: Improvements relating to electron discharge tubes or thermionic valves
IPC: H01J19/38
Filed: 1931-07-30
Abstract: 375,112. Thermionic valves. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. July 30, 1931, No. 21790. Convention date, Nov. 21,1930. [Class 39 (i).] A grid consists of wire 16, preferably of nickel, wound or a core 15 preferably of tungsten or molybdenum, the whole secured to two or more supports 5. The con struction increases the heat-radiating surface of the grid.
Patent GB-823756-A (GB)
Title: Electrical pulse generating apparatus
IPC: H03K3/26
Filed: 1956-07-09
Abstract: 823,756. Pulsators. COOPER-STEWART ENGINEERING CO. Ltd., and ROBSON, C. W. July 9, 1957 [July 9, 1956], No. 21794/57. Divided out of 817,795. Class 84. [Also in Group XL(c)] A pulse generator for operating the pulsator of a milking machine comprises a transistor 12 having a relay winding P/2 connected in series therewith in its emitter-collector circuit, and a normally-open contact p1 of the relay so arranged in the base circuit of the transistor that when the contact p1 closes the transistor 12 is cut off, current ceases to flow through the relay winding P /2 and the contact p1 is released. A capacitor 13 and resistor 14 are connected in series across the relay winding P /2 in order to provide the time constant necessary to cause the relay to be periodically operated at the desired rate. In the embodiment illustrated a second normally-open contact p2 is arranged in series with the contacts 16, 17 connected to the winding of the electro-magnet operating the air valve of the pulsator ; alternatively the electromagnet winding may be arranged in series with the relay winding or be constituted thereby.
Patent GB-315714-A (GB)
Title: Improvements relating to power transmission systems
IPC: H04H20/84
Filed: 1929-07-16
Abstract: 315,714. Kolster-Brandes, Ltd., (Assignees of Duncan, R. D.). July 16, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Protective arrangements.-In a wired-wireless system wherein high-frequency signals are transmitted over power lines, interference with the wireless receiver by power apparatus, such as motors, battery chargers &c. is eliminated by the provision of capacity and inductance inserted between the power apparatus and the transmission lines. The arrangement also prevents the absorption of the carrier frequency energy by low-impedance power apparatus such as electric heaters. As shown in Fig. 2, a broadcast receiver 8 is operated from power mains AA, which also supply a motor 1. Interference with reception by the motor 1 is prevented by a unit 4 connected in the supply to the motor and comprising a condenser 5 and inductance 6, the inductance being connected on the supply side in order to offer high impedance to the carrier currents. In a modification an inductance mav be connected in each supply main or two eliminators of the type shown in Fig. 2 may be connected in series. The eliminator may be included as a part of the power apparatus, or may be in the form of a portable container adapted to house the capacity and inductance, and provided with plug-and-socket connections. The eliminator may also be employed in wireless receiving apparatus for preventing interference by induction from power lines or from the supply mains of a mains-operated receiver.
Patent GB-479689-A (GB)
Title: Improvements in or relating to radio direction-finding systems
IPC: G01S3/14
Filed: 1936-08-08
Abstract: 479,689. Directive wireless signalling. PLESSEY CO., Ltd., and BAILEY, C. E. G. Aug. 8, 1936, No. 21893. [Class 40 (v)] Each of the amplifiers associated with a spaced aerial .of the Adcock type is subjected to automatic volume control, which is derived from a non-directive aerial so that it does not fluctuate with the direction of the incoming signal. For instance, the signals from the limbs N, S are amplified in A1, and those from the limbs W, E in A3, both amplifiers being connected across the deflecting-plates P1 ... P4 of a cathode-ray indicator. The signals picked up on the non-directive aerial V are amplified in A2, the output of which is applied in part to a rectifier R which supplies AVC voltages to the other amplifiers, and in part to the control electrode C of the cathode-ray tube so as to give an indication of " sense." The arrangement helps to keep the length of the cathoderay trace constant. The gain-control arrangement described in Specification 479,936 may be used to compensate for differences in the characteristics of the valve amplifiers.
Patent GB-460712-A (GB)
Title: Improvements in and relating to automatic binder or wrapper material feeding mechanism for cigar making machines
IPC: A24C1/28
Filed: 1935-08-02
Abstract: 460,712. Cigar - making machines. INTERNATIONAL CIGAR MACHINERY CO. Aug. 2, 1935, No. 21943. Convention date, March 22. [Class 130] Sheet material suitable for cigar binders or wrappers is fed automatically to, and stretched over, the cutting-bed so that the binders or wrappers may be cut therefrom. Figs. 1 and 3 show one form of machine in which the sheet material B is carried on a roller R and is fed intermittently between rollers 11, 12, over the cutting-bed 15, and between rollers 13, 14, being then wound on a roller 10 which is rotated step-by-step by means of an oscillating segment 49, gear-wheel 50, and a one-way clutch. While the material is stationary, the rollers 11... 14 are moved downwards as shown in full lines in Fig. 3, so as to stretch the material over the cutting-die on the bed 15, after which an arm 19 carrying rollers 20, 21 is moved over the bed to effect the cutting of the binder. The die block 17 is then raised so as to bring the cut binder under a suction carrier 18, by which it is conveyed to the bunch-rolling mechanism 85. The rollers 11 ... 14 are carried by sliding rods 29, 30 connected to a cross-bar 31 actuated by a link 41, arm 39, and grooved cam. Another cam actuates an arm 44, link 45, and arm 46 oscillating the sector 49. The arm 19 is oscillated by a link 59 and camactuated lever 60. The binder material may be pulped sheet tobacco or crepe or other paper, and may be sprayed at intervals with flavouring solution by means of a sprayer 78 fed by means of pipes 64<1>, 75, the flow of solution being controlled by a valve 73 actuated by a lever 68 and cam 71. When pulped sheet tobacco is used, it may be made to resemble leaf tobacco by being passed between embossing- rollers. In a similar manner, a web of wrapping - material W is fed intermittently from a roller 91 over a cutting-bed 96, and the wrappers are cut therefrom by rollers 98, 99 on a swinging arm 97. The wrappers are then conveyed by a carrier 90 to the bunch-wrapping mechanism 89. In a modification, Figs. 8 to 10 (not shown), the binder or wrapping material is stacked in sheets, which are conveyed one at a time from the bottom of the stack to the cutting-bed. After the cut binder has been removed from the cutting-bed, the remainder of the sheet is removed by an oscillating brush.
Patent GB-811378-A (GB)
Title: Improvements in and relating to the recovery of gold from cyanide solutions
Inventor: SEGAR GODFREY ALLEN
IPC: C01G7/00
Filed: 1956-07-16
Abstract: Gold is recovered from solutions containing it as an anion cyanide complex by contact with an anion-exchange resin which wholly or predominantly contains weakly basic tertiary or secondary amine groups and is in salt form, the gold anion absorbed by the resin being subsequently eluted and the free-base groups in the resin being reconverted periodically into the salt form.  Aqueous solutions of thiocyanates, sulphides or cyanides preferably sodium cyanide, of strength N-2N, may be used as eluants to remove the gold from the resin and aqueous solutions of inorganic mineral acids preferably hydrochloric or sulphuric acid are used to convert the free-base groups back into salt form.  In a cyclic process, a solution containing 100 ppm. Au in the form of KAU(CN)2 and 60 ppm. CN in the form of KCN is passed continuously through a bed of resin consisting of 8 per cent quaternary ammonium groups and 92 per cent dimethyl amino groups with a polystyrene base until traces of gold appear in the effluent.  The resin is eluted with 30 times its volume of N sodium thiocyanate solution and the whole process of saturation and elution repeated.  After both the third and fourth cycles the resin is treated, after elution, with twice its volume of 0.5N hydrochloric acid to regenerate the salt form of the resin. Free-base groups in the resin may also be converted to the salt form by interrupting the absorption stage, washing the resin with acid, and continuing the absorption.
Patent GB-219776-A (GB)
Abstract: 219,776. Miles, M. M. June 13, 1923. Colour scales.-An apparatus for the display of colours consists in the combination of a continuous strip C, having a colour scaLe thereon comprising a series of colours the wavelengths of the dominant lines of which bear the same relation to each other the wavelengths of a series of musical notes comprising an octave, and a casing A provided with apertures H arranged so that harmonious combinations of colours can be viewed. The apertures are spaced in accordance with known harmonious chords in music, and the coloured strip comprises several octaves of colour of differing tone value. Tables of wavelengths used are given in the Specification in which the mathematically correct wavelengths are modified in accordance with the retinal sensitivity of the observer. In a modification of the apparatus shown in Fig. 3, a box containing a series of lights is used situated behind a series of twelve different coloured glasses. The contacts of the lamps M arranged to contact as desired with a series of teeth 0 attached to current mains N the teeth being arranged so that the lamps behind combinations of harmonious colours are lighted- Alternatively, a transparent ribbon may be used in place of coloured glasses.
Patent GB-661856-A (GB)
Title: Knitted fabric
IPC: D04B23/10
Filed: 1947-08-08
Abstract: 661,856. Knitted fabrics. FORD, F. J. Aug. 8, 1947 [Oct. 12, 1939], No. 22039/47. Class 74 (ii). A substantially non-stretchable fabric comprises a succession of rope inlays R confined by a plurality of interlaced knitted threads of which some 22 extend between and longitudinally of the inlays with loops C at the rear of the fabric forming chains lying transversely of the inlays and loops at the front of the fabric interlooped with other threads 20 which extend longitudinally of the inlays along the front face of the fabric. Additional threads 21 extend transversely of the inlays at the rear of the fabric and are also interlooped with the threads 20. Specification 655,543 is referred to.