baber/WOPTO huggingface dataset:
Patent GB-563270-A (GB)
Title: An improved manufacture of lubricants
Filed: 1941-07-17
Abstract: An interpolymer soluble in hydrocarbon solvents prepared by subjecting ethylene, in the presence of at least one other unsaturated organic compound containing one or more double bonds, to a pressure of at least 500 atmospheres and a temperature of 100 to 400 DEG  C. is added as a viscosity improving agent to a hydrocarbon lubricating oil stock.  The latter may be synthetic or a natural mineral oil, such as a paraffinic Pennsylvania oil, a naphthenic oil or a fraction obtained by distillation or extraction.  Before use, the more unsaturated interpolymers, such as are derived from ethylene and diolefines, may be subjected to catalytic hydrogenation or halogenation.  In examples, lubricating oils are mixed with interpolymers prepared as follows: (1) ethylene and isobutylene are interpolymerized in a steel bomb in the presence of benzoylperoxide to give a mixture of a waxy solid and a liquid polymer which is removed by distillation; (2) ethylene is similarly interpolymerized with pentene-2 in the presence of gaseous oxygen; (3) a dry gas mixture of propylene and ethylene obtained from coke oven gas is interpolymerized to give a viscous oil; (4) a rubber-like polymer is obtained from ethylene and 2 : 3 - dimethyl butadiene - 1 : 3; (5) ethylene is interpolymerized with limonene, the dodecylester of fumaric acid and with dodecylmethacrylate.  The monomers may be reacted whilst emulsified.  The following unsaturated compounds are also specified: amylenes, hexylenes, heptenes, octenes, isoprene, pentadiene, dimethylpentadiene, 2 : 3-dichlorbutadiene, chloroprene, 1 : 3-pentadiene, 2 - methyl - 1 : 3 - butadiene, 1 : 3-hexadiene, 3-methyl-2 : 4-pentadiene, 2-butyl-1 : 3 - butadiene, 2 - heptabutadiene, acetylene, divinylacetylene, acrylic acid, styrene, indene, cyclohexene and cyclopentadiene.  Specifications 466,996 and 497,541 are referred to.
Patent GB-182525-A (GB)
Title: Improvements in hair-waving appliances
IPC: A45D2/38
Filed: 1921-03-24
Abstract: 182,525. Macken, L. March 24, 1921. Hair-waving.-The hair is wound over crescent-shaped members E mounted in two rows in staggered disposition on side-bars A, on which they are adjustable both longitudinally and transversely. These members are locked in the required position by a lever H and eccentric H<1> and the hair is prevented from slipping off by stops G. The end waving-members D are so fixed to end members B of the main frame that the start at one end is made on the right and at the other end on the left. A series of these waving-devices may be supported on arms K in such a way as to allow an electric heater to be passed over them to dry the hair.
Patent GB-590218-A (GB)
Title: Improvements in or relating to heat treatment of vegetable and other oils
Filed: 1944-05-12
Abstract: <PICT:0590218/III/1> An oil to be polymerized is passed through, or contained in, a tube or other vessel around or within which is disposed an infra-red ray generator emitting wavelengths in the 10,000-50,000 Angstrom band, or, for example, within smaller ranges having a maximum of 50,000 Angstrom units.  As shown in Fig. 1, a pump b passes oil from a receiving vessel a through a tube c disposed within an annular generator d, e.g., an electric resistance wire, and back to the receiver a or to some other treatment plant.  The tube c is of a material translucent to infra-red rays, e.g., glass.  The space between the generator d and the tube c is traversed by air or evacuated.  The pump b should have a constant delivery with positive characteristics against a varying pressure, and the generator d and receiver a are preferably lagged.  Oils such as linseed oil may provide sufficient thermal circulation to dispense with the pump.  In a modification, the oil is passed through an annular space between two concentric tubes.  The generator is contained in the central tube.  The pressure in the receiver a may be above, at, or below atmospheric.  The outlet from the tube c may be connected to a vacuum.  Specification 553,200, [Group XI], is referred to.
Patent GB-893824-A (GB)
Title: Process for the production of shrunk leather
IPC: C14C3/20
Filed: 1959-03-16
Abstract: 893,824. Leather. FARBENFABRIKEN BAYER A.G. March 16, 1959 [March 22, 1958], No. 9073/59. Class 76. In a process for the production of shrunk leather, a skin or hide is treated with (1) an aqueous solution of a synthetic resin obtained by the condensation of a dihydroxy-diphenyl-sulphone or a polyhydroxy-polyphenyl sulphone resin containing one or more free methylol groups with a naphthalene sulphonic acid, 10 grams of the said synthetic resin when dissolved in 1 litre of water giving a solution with a pH of not more than 2, followed by (2) retanning in the conventional manner with a chromium tannin. Specifications 416,191 and 723,628 are referred to.
Patent GB-526956-A (GB)
Title: Improvements in or relating to object-bearing devices for use with stereoscopes for the correction of squint and ocular muscle imbalance
IPC: G02B27/22
Filed: 1939-03-23
Abstract: 526,956. Eye appliances. BARBOUR, A. E. March 23, 1939, No. 9151. [Class 81 (ii)] [Also in Group XX] A carrier element especially for use in a stereoscope comprises two thin plates 8, Fig. 3, held apart, so as to form a slit 9 by means of U-shaped end pieces 10. A lever 15, pivoted at 17, and links 14, pivoted at both ends, enable each back plate 13 to be moved an equal distance from the centre 17. Two pins passing through the slot 9, attach each back plate 13 to an object bearing frame 11, Fig. 2. The device is used to correct squint and ocular muscle imbalance.
Patent GB-956815-A (GB)
Title: Improvements in hydraulic brake systems
IPC: B60T11/24
Filed: 1962-03-09
Abstract: 956,815. Hydraulic brakes; brake failure warning systems; valves. ANDRE CITROEN S.A. March 9, 1962 [March 11, 1961], No. 9195/62. Headings F2E, F2F and F2V. An hydraulic brake system for vehicles having an oleopneumatic, hydropneumatic or other hydraulic suspension system comprises two sets of brakes, one set 19a, 19b, Fig. 1, being connected to a source of fluid pressure 10 and the other set 21a, 21b to at least one suspension strut 2a, 2b by control means actuated by the brake pedal 48. In the construction shown, the system comprises a reservoir 7 supplying fluid to a second reservoir 10 and a safety valve 3 through a pump 11. Valve 3 (see also Fig. 2), provides a free passage of fluid to a control valve 17 through line 15 and, on actuation of a spring-loaded valve 25, a flow of fluid to the front 1a 1b and rear 2a, 2b suspension through height correctors 5, 13 respectively. The rear suspension struts 2a, 2b also supply valve 17 with fluid through a line 16. Valve 17 (see Fig. 3), comprises two spring-loaded pistons 35, 36, each possessing grooves 37, 51 respectively which communicate with chambers 50, 57 through respective bores 39, 53. Lines 18, 20, connected to the front 19a, 19b and rear 21a, 21b brakes are initially exhausted through a line 22 of reservoir 7. On actuation of piston 35 by pedal 48, pressure fluid from line 15 passes to front brakes 19a, 19b and also to chamber 50 where piston 36 is operated to connect rear brakes 21a, 21b to the suspension strut fluid. Fluid pressure also builds up in chamber 57 providing " feel " and a variable braking effect with pedal pressure. A switch 31 is mounted in safety valve 3 to give warning of circuit failure this being indicated by a dashboard lamp 32.
Patent GB-1169824-A (GB)
Title: Separation of Hydrocarbons by Cuprous Salts
Inventor: DUNLOP ARTHUR KERN
IPC: C07C1/00
Filed: 1967-02-27
Abstract: 1,169,824. Separation of unsaturated hydrocarbons with cuprous salts. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 27 Feb., 1967 [28 Feb., 1966], No. 9204/67. Heading C5E. Unsaturated hydrocarbons are separated from mixtures thereof with other hydrocarbons by treating the mixture under substantially anhydrous conditions (i.e. less than 7% water present) with a cuprous salt in the undissociated form of which the copper atoms are bound to oxygen atoms, in the absence of ligands having a greater complexing ability with cuprous copper than the unsaturated hydrocarbon, and thereafter separating the copper/hydrocarbon complex so formed. Cuprous salts specified are the sulphate and fluoro-substituted carboxylate, e.g. cuprous trifluoroacetate. The reaction may be carried out in the presence of a polar organic solvent, e.g. propionitrile, tetrahydrofuran, tertiarybutyl toluene and propylene carbonate (many others are specified). The separation of mono-olefins from paraffins, di-olefins from mono-olefins, 1-olefins from internal olefins, isoprene from piperylenes, cyclopentene from cyclopentane, benzene from cyclohexane and/or hexanes, and di-olefins from mineral oil fractions, e.g. steam-cracked gasoline, are specified (many specific examples are given).
Patent GB-823608-A (GB)
Title: Improvements in or relating to echo waveform correctors
Inventor: LINKE JOSEF MARIA
IPC: H03H2/00
Filed: 1956-03-23
Abstract: 823,608. Waveform correcting circuits. POSTMASTER-GENERAL. March 22, 1957 [March 23, 1956], No. 9210/56. Class 40 (8). An echo waveform corrector comprises a circuit for generating an echo from a signal and an output circuit for combining the signal and the echo, the echo being transmitted directly to the output and the signal being transmitted to the output through a delay line which determines the time relation between the echo and the signal. As shown in Fig. 2, the input 12, echo network 5 and one end of the delay line 4 are connected to the centre-tapped winding of a first differential transformer 2, the other end of the delay line and the load Ro being connected to the corresponding winding of a second differential transformer 3 which is provided with a balancing resistor 7. The other windings of the transformers are directly connected, the echo being transmitted through these windings. The circuit is matched to the output by a pad 6. In the circuit of Fig. 3 (using only one differential transformer 16) the delay line 15 has a characteristic impedance 2Ro and the echo network 17 an impedance at zero frequency of 2Ro. In order to minimize losses, no matching pad is provided. The circuit of Fig. 4 is a modification of that shown in Fig. 3 and provides for a number of echoes to be combined with the delayed signal. Each of the n differential transformers has a winding ratio of 1 : #2, the impedances of the delay line 22 and the echo networks 25 ... 28, 29 being related to the source impedance Z, in the manner shown on the drawing. In a modification (Fig. 5, not shown) the transformers have a ratio of 1 : 1 and the input signal is fed through a centretapped autotransformer, the half coils of which are closely coupled and which is shunted by a suitable balancing impedance. The echo network may be as shown in Fig. 7 where the centre tappings of inductors 44 are connected to earth through capacitors 45. The line is terminated at either end by m-derived half-sections 46 and a terminating impedance RT is provided to give the required impedance at zero frequency. Dissipation in the inductors is corrected by resistors 47.
Patent GB-1028689-A (GB)
Title: Improvements in or relating to tracks for toy vehicles
Inventor: HOK-SHOU TING
IPC: A63H18/02
Filed: 1964-03-04
Abstract: 1,028,689. Electrically driven toy vehicles. KADER INDUSTRIAL CO. Ltd. Feb. 25, 1965 [March 4, 1964], No. 9234/64. Heading A6S. A track section for an electrically driven toy vehicle has a conductor rail 18 which has a projecting portion 22 extending beyond the end of the track section and is adjustable to lie transversely thereto so that when two such projecting portions 22 are pressed together good electrical contact is made. The track is intended to have a pair of such conductors with a guide slot for the vehicle between them.
Patent GB-709380-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J19/44
Filed: 1952-04-10
Abstract: 709,380. Thermionic valves. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 10, 1952 [April 13, 1951], No. 9238/52. Class 39(1) An electric discharge tube, for example one having small dimensions, the bulb of which is closed by a glass bottom part having sealed in it a number of contact pins arranged on a circular arc, is characterized in that at least one insulating strip is placed inside the tube above the glass bottom and extending between two substantially diametrically opposed pins. In Figs. 1 and 2 the strip 14, which may be of mica, extends between the pins 2 and 6 so that although metal volatilized from the cathode deposits on it and forms a highresistance connection between these two pins, the glass bottom below it is shielded from the metal and pins 1, 7 and 8 are insulated from pins 2, 3, 4, 5 and 6. A further strip 15 may be provided and this insulates all the pins from each other except pins 2 and 6; the strips 14 and 15 may lie in contact with each other without impairing the insulation. The pins 2 and 6 are preferably so chosen that leakage between these two is least likely to be detrimental to the operation of the valve; for example, they may be the filament and screen grid connections of a diode-pentode. The valve may be a triode-hexode, a diode-pentode, or a double pentode. If the valve has an odd member of pins the strips will not be exactly diametrical but the two strips will still be of equal length.
Patent GB-1360854-A (GB)
Title: Electrical switches for use in road vehicle safety arrangements
IPC: H01H35/00
Filed: 1971-04-13
Abstract: 1360854 Vehicle safety harness JOSEPH LUCAS (INDUSTRIES) Lid 10 April 1972 [13 April 1971] 9268/71 Heading A3V [Also in Division H1] An electric switch is actuated by movement of a vehicle seat belt 14 Fig. 2 passed through an aperture 13 in the switch and having an abutment hole 24 engageable with a resiliently biassed moveable contact 18 of the switch to disengage it from a fixed contact 20 and thereby monitor that the belt 14 has been withdrawn from its reel to its position in use. In one embodiment the contact 18 comprises a bent wire having a loop 17 Fig. 1 engageable in the hole 24 but moveable by snap action between a stable "on" position and a stable "off" position against stop 21. A terminal connection is provided by a plate 23 in the base 12 engaged by the contact 18. In a modification the moveable contact comprises a flat plate contact 123 Fig. 4 which bridges a pair of fixed contacts 121 and is resiliently urged towards the belt 114 by an arcuate yieldable casing portion 124. The upper and lower portions 110 and 111 of the casing are folded together at a flexible connecting portion 112 and are clipped together by flexible interengaging lips 117, 118. A monitoring circuit Fig. 3 operates a warning lamp 31 and an alarm 32 if the driver's or passenger's seat belt switches 25, 26 are still closed when the ignition switch 28 and a gear lever operated switch 27 are also closed. A further switch 30 operated by the weight of a person in the . passenger seat renders the switch 26 inoperative when the passenger seat is unoccupied.
Patent GB-977024-A (GB)
Title: Improvements in cleaning machines
IPC: D06F37/22
Filed: 1961-03-14
Abstract: 977,024. Spin driers. C. BERNSTEIN. March 14, 1961, No. 9293/61. Heading F4G. [Also in Division D1] A washing and spin-drying machine has a rotatable washing drum 21 divided into two or more clothes receiving pockets 22, 26 and provided with a single counterbalancing tank 20 at its periphery into which liquid, e.g. water, is injected whilst the drum is being rotated. A stationary chamber 10 housing drum 21 is mounted on a rockable platform 12 supported by a pivot 13 and a spring 14, the stem 2 of a valve 16 being coupled to the platform, as shown. A slightly greater weight of clothing is lodged in pocket 26 than in pocket 22, and the lack of balance when the drum is rotating actuates valve 16 to admit fluid to tank 20 through a pipe 18, a feed-ring 19 and a pipe 19a. A bleeder-opening 20a in the tank compensates for changes in the liquid content of the clothing. Drum 21 may be uncoupled from a drive mechanism by an electromagnetic clutch 30, an indicator 36 facilitating loading of the pockets with suitable weight proportions. The clutch may be disengaged, or a drive-motor (not shown) may be disconnected, when liquid is fed to tank 20. An excess of liquid in the tank may cause a second valve (not shown) in pipe 17 to close and the drum to coast whilst the liquid escapes through opening 20a. Tank 20 may comprise a plurality of compartments which may be inter-connected by pipes or passages (not shown). The valve 16 may alternatively be operated by a micro-switch 15 and a switch (not shown) may be provided to change the speed of the motor from low to high when partition 25 is horizontal. Specifications 663,829, 682,769 and 711,531 are referred to.
Patent GB-786724-A (GB)
Title: Improvements in or relating to magnetic equipment for storing intelligence
Inventor: RIDLER DESMOND SYDNEY
IPC: H04L12/54
Filed: 1954-03-30
Abstract: 786,724. Two-terminal networks. STANDARD TELEPHONES & CABLES, Ltd. March 30, 1954, No. 9329/54. Class 40 (8). [Also in Groups XIX and XXXVIII] A two terminal network used for balancing purposes in a magnetic intelligence-storage apparatus has electrical characteristics equivalent to those of a magnetic recording head. The coil L1 is wound upon a magnetic core identical to the core of the head and has an adjustable gap. When this gap is adjusted to make the remanent flux equal to that of the head it is found necessary to add an air-cored coil L2 to balance out the inductance of the head. A resistor R1 and a coupled circuit L3, R2 respectively balance out the resistance and eddy-current effects in the head. Specification 786,721, [Group XIX], is referred to.
Patent GB-395820-A (GB)
Title: Improvements in the manufacture and production of azo dyestuffs
IPC: C09B35/21
Filed: 1932-04-01
Abstract: Disazo dyes are made by coupling tetrazo compounds of diamines obtained by condensing 2 mols. of an aromatic amine with 1 mol. of an aliphatic ketone with derivatives of benzene containing at least one OH group attached to the nucleus, all the components being free from SO3H and COOH groups.  They are soluble in oil and may be used for colouring varnish lacquers, oil varnishes and intaglio printing inks. In examples, the following dyestuffs are described: (1) condensation product from acetone (1 mol.) and aniline or o- or m-toluidine (2 mols.) \sQ p-cresol, 4-chlor-3-methylphenol, 2 : 4-dimethylphenol, or hydroquinone monomethyl ether or o-, p-cresol mixture, (2) product from acetone (1 mol.) and o-anisidine or aminohydroquinone dimethyl ether (2 mols.) \sQ p-cresol.
Patent GB-1084821-A (GB)
Title: Device for preventing corrosion in fluid-carrying pipes
Inventor: SUTTON CORNELIUS JAMES
IPC: C02F1/68
Filed: 1963-03-08
Abstract: 1,084,821. Mixing in flow. BORITE Ltd. April 17, 1964 [March 8, 1963], No. 9441/63. Heading B1C. A device for supplying an anti-corrosion additive to boiler condensate flowing in a pipe 1 comprises a receptacle 2 for the solid additive and a capillary tube 4 axially adjustable within an outer tube 5, both tubes having small transverse bores 9, 10. In operaion fluid, mainly steam, from the pipe 1 seeps hrough the capillary tubes and bores and when the receptacle 2 s full of additive solution some will seep back into the pipe 1, he rate of seepage being determined by the alignment of the bores 9, 10. There is a stop valve 12. The charge of additive may be in the form of a cylindrical block with a central hole.
Patent GB-1452480-A (GB)
Title: Floating wick holder
IPC: F21S13/00
Filed: 1973-02-26
Abstract: 1452480 Floating wick-holder RIZLA Ltd 19 Feb 1974 [26 Feb 1973] 9447/73 Heading F4T A wick-holder moulded in one piece from a plastics material, e.g. polymethylpentene, which is naturally buoyant in a combustible oil includes a portion 1 for the retention of a wick, arranged such that when the wickholder is floating in the oil the portion 1 is disposed below the surface thereof. In Fig. 1 portion 1 is joined by arms 5 to disc-like main floats 4 at a higher level than the upper surface of the portion and the wick 3 is retained in a through-hole 2. In a similar arrangement (Fig. 2 not shown) the portion 1 and floats 4 are shaped such that the holder has, a floral appearance. In a modification, Fig. 3, the holder is formed as a spiral the turns 4 of which serve as main floats. In a similar modification (Fig. 4 not shown) the main float 4 is formed as a partial or complete annulus attached to portion 1 by one or more arms 5.
Patent GB-643814-A (GB)
Title: Improvements in or relating to electric insulators having semi-conducting glazes
IPC: H01B17/02
Filed: 1948-04-05
Abstract: 643,814. Insulators. BULLERS, Ltd., and PERRINS, G. April 5, 1948, No. 9510. [Class 36] An electric insulator having a semi-conducting glaze is characterized in that the form factor of the insulator and the effective radii of the electrodes are such that the maximum voltage gradient in the glaze does not exceed a value of the order of 1.0 to 1.5 kv. per inch at the normal operating voltage. The voltage gradient (G) at any point on the surface of the insulator is obtained from the formula where V is the operating voltage, r the radial distance of the point from the axis of the insulator and Y the form factor of the insulation. The form factor is given by the formula R=Yp where R is the surface resistance and p the surface resistivity. The maximum voltage gradient on the surface of the insulator occurs at the point where r is a minimum, i.e. at the periphery of the electrode having the smaller radius, where it contacts the surface of the insulator. By increasing the form factor and the radius of the smaller electrode the voltage gradient is reduced to the desired value. In the case of a cap and pin type insulator the former may be effected by increasing the depth of flanges 21 by a suitable amount, and the latter by increasing the radius of the pin electrode 14 to a suitable value by surrounding the pin with a metal collar 18, or by forming the pin with an enlarged portion. Alternatively the pin may be secured by conductive cement 15, the under surface and bore 16 of the insulator being provided with a metal coating. Specification 527,357 is referred to.
Patent GB-609994-A (GB)
Title: Production of form-stable, rubberlike polyvinyl ú¯-butyl ethers
IPC: C08F16/12
Filed: 1946-03-27
Abstract: Rubber-like polymers are made by subjecting vinyl n-butyl ether to an acid-reacting condensing agent in the presence of an inert diluent which is liquid at the reaction temperature of between 45 DEG -100 DEG  C.  Copolymers with vinyl isobutyl ether or isobutylene may be similarly prepared.  There are specified as condensing agents tin tetrachloride, stannous chloride, aluminium chloride and its diethyl ether complex, iron chloride, zinc chloride, sulphuric and hydrochloric acids, sulphur dioxide, boron trifluoride and its addition products with diethyl, dipropyl, dibutyl, diamyl and methyl ethyl ethers; as diluents ethane, propane, butane, ethylene and methylene chloride.  The temperature may be controlled by drop-wise addition of the catalyst. Preferably monomer and catalyst are mixed at a temperature below 100 DEG  C. and the temperature subsequently raised.  The catalyst is quenched with sodium, potassium or ammonium hydroxide, methylamine, diethylamine, ethanolamine, diethanolamine, pyridine, methanol, ethanol, butanol, benzyl alcohol, acetone, methyl ethyl ketone, formaldehyde or acetaldehyde, to which pentane may be added.  The inactivated catalyst may be removed by washing with aqueous ammonium hydroxide or precipitating the polymer from a benzene solution with methanol or ethanol.  The products are soluble in benzene, toluene, ethers, ketones, butanol and chlorinated hydrocarbons.  They may be used as adhesives for electric insulation, for flexibilizing waxes, paraffins and brittle plastics and solution-casting sheets.  The monomer may be freed from alcohols by fractional distillation over a mixture of potassium hydroxide and metal.  Specifications 378,544 and 441,064 are referred to.