baber/WOPTO huggingface dataset:
Patent GB-1126482-A (GB)
Title: Separation of straight chain hydrocarbons from mixtures
Inventor: GROSZEK ALEKSANDER JERZY
IPC: C01G39/06
Filed: 1964-09-25
Abstract: 1,126,482. Refining oils. BRITISH PETROLEUM CO. Ltd. 24 Sept., 1965 [25 Sept., 1964], No. 39140/64. Heading C5E. A method of separating long-chain normal hydrocarbons having at least 10 carbon atoms per molecule from their mixtures with other hydrocarbons comprises contacting the mixture with graphite having a surface area of at least 50 m<SP>2</SP>/g.:selectively to adsorb the normal'hydrocarbons. The process is applicable to dewaxing and reducing -the cloud and pour points of petroleum fractions, and results in increase of viscosity =index and reduction of sulphur content. The oil to be treated may be dissolved in a lower-boiling solvent, e.g. an alcohol or a hydrocarbon.
Patent GB-369668-A (GB)
Title: Improvements in or relating to wheels for motor cycles and other motor vehicles
IPC: B60C7/10
Filed: 1930-12-31
Abstract: 369,668. Vehicle wheels. BLAKE BROUGH, L. H. J:, 48, Tolworth Rise, Tolworth, Surrey. Dec. 31, 1930, No. 39287. [Classes 144 (i) and 144 (ii).] The tyre of a wheel for use on motor cycles or other motor vehicles employed for racing or entertainment purposes, constructed to facilitate side-slip when turning, comprises a series of balls or rollers 11 rotatably mounted on spindles 18 arranged obliquely across the channel rim 25. The balls &c. may be formed of hard rubber or like material and, as shown, may be spaced by transverse rollers 21 in which case more resilient material may be used for the balls. Fig. 5 shows a modification in which the tyre comprises two sets of balls 32, 33 with oppositely-inclined spindles 30.
Patent GB-354674-A (GB)
IPC: B65H75/18
Filed: 1930-12-31
Abstract: 354,674. Spinning bobbins. BERLINKARLSRUHER INDUSTRIE - WERKE AKT.-GES., Karlsruhe, Baden, Germany. Dec. 31, 1930, No. 39299. Convention date, Jan. 3. [Class 120 (iii).] The edges of spinning bobbins are reinforced and rendered less liable to corrosion, by being turned over, either outwards or inwards as at d, and pressed so that there is no hollow space in the flange.
Patent GB-927947-A (GB)
Title: Improvements in or relating to n-alkyl-3-pyrrolidyl hydrazones
IPC: C07D207/14
Filed: 1959-11-19
Abstract: The invention comprises compounds of the general formula: <FORM:0927947/IV(a)/1> wherein R1 is a C1-4 alkyl group and R2 is a C1-4 alkyl group or a C1-7 acyl group, and the preparation thereof by reacting an appropriate N-substituted-3-pyrrolidone with a hydrazine H2N,NHR2.
Patent GB-1445907-A (GB)
Title: Injection moulding of multi-layer articles
IPC: B29C45/00
Filed: 1974-09-10
Abstract: 1445907 Sandwich moulding SCHLOEMANN-SIEMAG AG 10 Sept 1974 [13 Sept 1973] 39368/74 Heading B5A A method of moulding multi-layer articles of thermoplastict synthetic material comprises injecting into a mould 5 an inner strand of thermoplastics synthetic material containing a blowing agent and a core strand and an outer annular strand each of thermoplastic synthetic material free from blowing agent. Apparatus for carrying out the method comprises an injection head 1 which is connectible to at least two separate injection cylinders 2, 3 and which is provided with a central nozzle closable by a needle 35, an outer annular nozzle closable by a sleeve 10, and a further annular nozzle disposed between the other two and closable by a sleeve 22. The needle 35 and sleeves 10, 22 are movable axially by piston cylinder units 40, 31, 19 respectively. The invention is applied to the moulding of articles having a cellular core and an unfoamed outer skin. In operation the outer annular nozzle and the central nozzle are opened and skin material injected. After an interval the other annular nozzle is opened also and foamable and unfoamable materials are injected simultaneously. In a modification all three nozzles are opened at the commencement of injection, the speed of injection of the non- foaming strands being slightly greater than that of the foamable strand. The needle 34 may be provided with a central channel (not shown) through which air &c. can be blown to produce an article having a hollow space surrounded by a three-layer envelope surface. Instead of using the same material for the core and outer strand these may be of different materials, a third injection cylinder being provided for this purpose.
Patent GB-826809-A (GB)
Title: Method of and apparatus for the manufacture of pleated paper filter cartidges
IPC: B01D27/00
Filed: 1957-12-19
Abstract: 826,809. Moulding filters. FRAM CORPORATION. Dec. 19, 1957 [April 5, 1957], No. 39505/57. Class 87(2). In the manufacture of pleated paper filters having plastic end caps by immersing the ends of the pleated paper 45 in e.g. a polyvinyl resin in a mould 44, the moulds are carried in holes 37 in a table which rotates over nozzles 24 through which hot air is blown to heat the mould and cure the resin. The air is withdrawn through ducts 49 and re-heated by a flame in a tower 50 and returned to the nozzles through ducts 48. The temperature of the air may be controlled by a thermostat. Loading stations 46 and 47 are provided, and at these stations there are no nozzles. To vary the time of cure, sector shaped plates of varying lengths may be positioned over a desired number of nozzles. Some of the hot air may be evacuated at 59 to help in preventing hot air from escaping between the table and the end walls 16. The walls 16, 17 and floor 15 are made of heat insulating material. The. table is driven by a variable speed electric motor 41 through a reduction gear box 42 and a gear 34 and rack 33. Specification 751,655 [Group XXVIII], is referred to.
Patent GB-812486-A (GB)
Title: Continuous leaching of boron ores
Inventor: BUCHE KARL
IPC: C22B61/00
Filed: 1956-12-28
Abstract: <PICT:0812486/III/1> In the continuous leaching of boron ores, water or aqueous sodium carbonate solution flows continuously through a stationary bed of the coarsely disintegrated ore, preferably in an upward direction. The bed may be replenished either continuously or intermittently. It is convenient to adjust the flow of the leaching medium so that the fine residue is entrained and thus removed, whilst the coarse residue may be removed either intermittently or continuously.  In the example (see the Figure) crushed colemanite ore is introduced from the top of a tube A and a leaching solution at about 80 DEG  C., containing borax, sodium carbonate, and sodium bicarbonate, enters at the bottom.  Fresh ore is continuously added at the top and any residue is removed intermittently from the bottom by a hand-operated screw conveyer.  The slurry emerging at the top of A, above the level of the solids, enters a vessel B where sodium carbonate is added, and the solution is then filtered in C, the resulting solution and washings being transferred to D, where sodium borate is crystallized out, and separated in the centrifuge E.  The mother liquor, at about 30 DEG  C., passes to container F, where flue gas is passed through to raise the sodium bicarbonate content.  The liquor is now passed through a heat exchanger in D and the heater G, and is recycled to A.  The filtered residue is discharged at R, and the product at P. Carbon dioxide or carbon dioxide containing gases may be introduced into the leaching vessel from below, when the upper part of the vessel is cooled.  The leaching vessel may be heated, preferably by introducing live steam.  The process may be performed at or above atmospheric pressure.
Patent GB-1511146-A (GB)
Title: Granules of copolymers of ethylene having reduced tackiness
IPC: C08J7/12
Filed: 1974-09-11
Abstract: 1511146 Coated granules of ethylene copolymer IMPERIAL CHEMICAL INDUSTRIES Ltd 21 Aug 1975 [11 Sept 1974] 39601/74 Heading B2E Granules of copolymer of ethylene and an unsaturated ester of a fatty acid are coated with a surfactant to reduce surface tackiness of the granules. The copolymer may be of ethylene and vinyl acetate. Suitable surfactants are soaps e.g. potassium oleate, and condensates of ethylene oxide with C 11-19  aliphatic primary alcohols. The coating may include an antifoaming agent and may be applied by immersing the granules in aqueous solution or dispersion of the surfactant followed by drying.
Patent GB-1160615-A (GB)
Title: Thread Clamping Device
IPC: D01H4/08
Filed: 1967-08-30
Abstract: 1,160,615. Open end spinning. SCHUBERT & SALZER MASCHINENFABRIK A.G. 30 Aug., 1967 [3 Sept., 1966], No. 39691/67. Heading D1D. In open end spinning devices a thread clamp 7 is arranged between the spinning chamber or thread producing region (below lid 11) and the thread draw-off device 3 so that on stopping spinning or on decrease of thread tension the yarn is clamped e.g. in the outlet tube 6' to prevent the end leaving the chamber. The clamping arrangement is applicable to all forms of open end spinning devices e.g. rotary chamber type, Fig. 1, not shown, electrostatic type Fig. 6 not shown, stationary chamber type Fig. 7 not shown and pneumatic type Fig. 8 not shown. When restarting spinning the yarn end may be fed back into the spinning area by reversing rollers 3 or a normally extended yarn path F may be shortened to F' by movement of a guide 30 to provide an excess length. A pressure sensitive device in the spinning chamber may actuate the clamping device when spinning stops. In Fig. 5 the normal yarn tension in tube 6' holds a pivoted feeler 720 in a position such that an associated flag 722 blocks a light beam to a photo-cell. When the yarn tension drops the feeler and flag move to the position shown in dotted lines and the photo-cell is activated; as a result compressed air is fed to clamp 7 and the thread clamped. When normal thread tension is re-established the photo-cell is again blocked and the thread is unclamped. In Fig. 9 not shown the thread clamping member (741) and the thread path extending member (31) are mounted on arms on a common shaft (32) rotatable by solenoid means under the control of the yarn tension feeler device. Thus the unclamping of the yarn and the yarn feed back are co-ordinated when starting up. The thread clamping device can be actuated pneumatically, electromagnetically, by hand or by a cam, for all spinning positions or at individual spinning positions. The clamp may be a flexible sleeve through which the yarn passes and which is surrounded by pneumatic means which compress the pipe and cause the yarn to be clamped. The clamping may be operated in response to yarn absence in the yarn outlet tube, the absence being sensed by a photo-electric device. A clamp may be provided which acts lightly on the yarn during spinning and is only released for reconnection or return feed. Reference has been directed by the Comptroller to Specificatior 1,092,596.
Patent GB-902356-A (GB)
Title: Improvements in or relating to reserpine analogues
IPC: C07D459/00
Filed: 1958-12-10
Abstract: The invention comprises racemic, laevorotatory and dextrorotatory forms of 11-methoxy - 16b  - methoxycarbonyl-17a -(acetyl, methylamino)-18b -(31,41,51-trimethoxy bezoyloxy)-3b ,20a -yohimbane(I) of formula:-  <FORM:0902356/IV (b)/1> and of the analogous 3,4-dehydro-20a -yohimbane cation in combination with an anion, e.g. perchlorate, halide, nitrate, sulphate or phosphate, together with their preparation from the lactone of 8b -hydroxy-2b -bromo-3b ,5b -epoxy - 1,2,3,4,4aa ,5,8,8aa  - octahydronaphthalene 1b -carboxylic acid (or from any subsequent intermediate in the synthesis) by treating it in an inert solvent with methylamine, acetylating the resulting 2a -methylamino compound and then bromohydrinating to give the 1,8-lactone of 6a -bromo-7b ,8b -dihydroxy-2a -(acetyl, methylamino) - 3b ,5b  - epoxy - 4aa ,8aa -decahydronaphthalene - 1b  - carboxylic acid which is oxidised and the resulting 7-oxo derivative reduced and dehydrobrominated to 3b -hydroxy-oxo-2a (acetyl methylamino)-1,2,3,4, 4aa ,7,8,8aa -octahydronaphthalene- 1-carboxylic acid, which is acetylated, methylated and the 3b -acetoxy-methyl ester ozonised and methylated to give the methyl ester of 1b -carboxymethyl-2b -methoxycarbonyl-3a (acetyl, methylamino)-4b -acetoxy - 6b  - formyl cyclohexane, which is condensed with 6-methoxytryptamine and the resulting methyl ester of 18b -acetoxy-11-methoxy - 16b  - methoxycarbonyl-17a (acetyl, methylamino)2,3-3,4-diseco - 20a  - D 4,21 - yohimbene-3-oic acid is cyclized by reductive cyclization to 18b -acetoxy - 11 - methoxy-3-oxo-16b -methoxycarbonyl - 17a  - (acetyl, methylamino)-2,3-seco-20a -yohimbane, saponified to the 18b -ol, esterified with a trimethoxybenzoylating agent, cyclized with a dehydrating agent and the cyclized material in the form of a salt of 11-methoxy-16b -methoxycarbonyl-17a  (acetyl, methylamino)-18b -(31,41,51 - trimethox benzoyloxy)-3,4-dehydro - 20a  - yohimbane reduced to 11-methoxy-16b -methoxycarbonyl-17a (acetyl, methylamino) - 18b  - (31,41,51 - tri - methoxybenzoyloxy) - 3b ,20a  - yohimbane. Detailed examples illustrate the synthesis of the laevo form of I. Specifications 868,475 and 902,357 are referred to.
Patent GB-1445975-A (GB)
Title: Friction material
IPC: C08L61/10
Filed: 1972-08-30
Abstract: 1445975 Friction materials IMPERIAL CHEMICAL INDUSTRIES Ltd 8 Aug 1973 [30 Aug 1972] 40189/72 Heading C3R A friction material in the form of a brake or clutch lining comprises a synthetic metal oxide fibre and a binder. Suitable fibres comprise thoria, urania, a rare earth metal oxide, yttria, titania, chromia, magnesia, zinc oxide, calcia or a double oxide of an alkaline earth metal oxide and alumina, zirconia or chromia or mixtures thereof. The binder is preferably organic, e.g. a natural or synthetic rubber or a thermosetting resin. It is preferably a phenolformaldehyde resin. Optional ingredients include lubricants, e.g. litharge, graphite or MOS 2 ; fillers, e.g. ground barytes, perlite, corundum, borax or clays; metals, e.g. Zn, Cu, Pb, Fe or brass in the form of wires, turnings or powders. The friction material normally comprises 15- 35% wt. binder, 40-85% wt. metal oxide fibre and 0À1-25% wt. of other ingredients. The metal oxide fibre preferably has an average diameter of 0À5 to 10 microns. In a preferred process for making the friction material the fibre is incorporated into the binder by a wet board process comprising dispersing the fibre, felting the dispersed fibres, saturating the felted fibres in a liquid binder, shaping and solidifying. In the examples friction materials are prepared from a phenolic resin dissolved in acetone and alumina or zirconia fibres both in the presence and absence of "PERLITE" (Registered Trade Mark) or kaolin as filler. After removal of the acetone the dry mix is compressed into a block and friction/wear tests carried out.
Patent GB-1529713-A (GB)
Title: Stable suspensions of water-insoluble silicates capable of binding calcium ions and their use in the production of washing and cleaning agents
IPC: C01B39/06
Filed: 1975-10-02
Abstract: 1529713 Aluminosilicates HENKEL KG AUF AKTIEN 2 Oct 1975 [10 Oct 1974 19 June 1975] 40241/75 Heading C1A [Also in Division C4] An aluminium silicate of formula is produced by reacting, in aqueous solution, a sodium aluminate and sodium silicate to obtain a  crystalline precipitate, which is capable of drying to a content of 11À4% H 2 0 (H 2 0 = 2À0). Crystalline aluminium silicates of formula and are produced in a similar manner. X-ray amorphous aluminium silicates of formula and are produced similarly. A crystalline aluminium silicate of formula is also produced.
Patent GB-1073757-A (GB)
Title: Cryoelectric switching circuit
IPC: G11C11/44
Filed: 1964-10-02
Abstract: 1,073,757. Cryotrons. RADIO CORPORATION OF AMERICA. Oct. 2, 1964 [Nov. 5, 1963], No. 40250/64. Heading H1K. [Also in Division H3] In a cryoelectric switching circuit comprising a cryotron having a gate electrode and control electrode each of a soft superconductor material both electrodes are driven out of their superconducting state by a current applied to the control electrode. In the operation of circuit of Fig. 1 current from source 36a is applied to control electrodes 20a, 22a of tin to switch them from their superconductive state to resistive state and also to drive gate electrode 24a to its normal condition, control electrodes 20, 22 remaining in their superconducting state. When a pulse is now applied to the two paths 28, 30 from source 26 and since path 28 has a very low value of inductance due to the shielding effect of the superconducting control elements compared with path 30, current from source 26 instantaneously steers into path 28. Since the gate electrode 24a is also in its resistive state and the total resistance of path 30 is greater than path 28 more of the current continues to flow into path 28 if the current from source 28 tends to redistribute from the initial maximum value in path 28. A resistor of copper or silver may be used to shunt the control electrode in order to operate the circuit between superconducting and intermediate states. The device is constructed in the form of thin films insulated from one another by silicon monoxide, Fig. 3 (not shown), in which a tin gate plane is sandwiched between two tin control planes and two pairs of lead ground planes are provided on each side of the sandwich which ground planes overlap slightly the edges of the control planes.
Patent GB-848027-A (GB)
Title: Improvements in or relating to a combined rotary internal combustion engine and compressor
Inventor: BREELLE YVES
IPC: F01C1/20
Filed: 1957-12-30
Abstract: 848,027. Rotary I.C. engines. INSTITUT FRANCAIS DE PETROLE, DES CARBURANTS ET LUBRIFIANTS. Dec. 30, 1957 [Dec. 19, 1956], No. 40340/57. Class 110 (2). In a rotary I.C. engine of the multiple rotary abutment type at least one of the rotary abutments M is provided with or is associated with at least one combustion chamber C, whilst two consecutive rotary abutments G, H not associated with a combustion chamber define a compression zone for gases to be compressed. The stator is provided with an air intake passage A, an exhaust passage B, a secondary exhaust passage L, a scavenging and supercharging passage F and compressor inlet and outlet passages C, S. In a modification, Fig. 2, not shown, the combustion chambers are defined by the abutment recesses and the passages A, C, L are disposed transverse to the remaining passages. In a second modification, Fig. 3, not shown, the combustion chamber is disposed in the stator. Part of the compressed gases may be used to scavenge, supercharge and/or cool the stator and the rotors. Specifications 795,898, 838,166, 840,756 and 843,282 are referred to.
Patent GB-1443704-A (GB)
Title: Method and apparatus for solvent extraction of liquid/liquid  mixtures
IPC: B01D11/04
Filed: 1972-08-31
Abstract: 1443704 Extracting a liquid/liquid mixture with a solvent DAVY POWERGAS Ltd 31 Aug 1973 [31 Aug 1972] 40473/72 Headings B1D and B1F In a liquid/liquid contactor, the liquid components of a mixture of liquids are separated by solvent extraction by feeding the mixture and the solvent via conduits 19 and 20 respectively into chamber 15, whereby stirrer 25 forms an emulsion which passes through droplet coalescence enhancing perforate packing 17 to separator chamber 17, and solvent containing one of the liquids, and the other liquid, are drawn off through conduits 21 and 23. Packing 17 may comprise a labyrinth formation of tubular, ring like, saddle-shaped or plate like elements, or woven or knitted mesh fabric, may be made of P.T.F.E. or stainless steel or of two different materials, one of which is wettable by the dispersed phase but not the continuous phase, and the other of which is wettable by the continuous phase but not the dispersed phase.
Patent GB-1492085-A (GB)
Title: Audio-visual teaching machine for speedy training and an instrument centre on the basis thereof
IPC: G09B7/00
Filed: 1975-10-03
Abstract: 1492085 Educational apparatus E S DIAMENT S V KISELEV V L MONIN V V PETRUSINSKY and V M PRONIN 3 Oct 1975 40549/75 Heading G5G A comprehensive instruction centre for programmed learning comprises one or more machines; providing instructional material for a student and monitoring his performance. The student passes through a number of phases which may be organized in different rooms, namely (1) test session in which audio-visual tests, and also measurements of his physiological and biological response to stimuli (e.g. electric stimuli) are made and the results recorded to control subsequent teaching; (2) passive assimilation of basic audio-visual teaching material; (3) active teaching-testing in which the student responds to test material based on phase 2 at an unconcscious level; (4) indirect stimulation by signals designed for unconscious modification of his attitudes and by application of electric sitnals to various parts of his anatomy; (5) proficiency check by question-andanswer; (6) learning phase in which presentation of material is at a rate related to one of his biological rhythms; (7) training in motor skills by simultaneous presentation of suggestive material and electrical muscle stimulation; (8) relaxation; (9) programmed sleep with applied signals to promote this; and (10) rest session with appropriate music and application of graded physical forces. The basic machine, to which further units appropriate to the phase to be carried out may be added, comprises (Fig. 1) an operator's console 1 for the teacher, a unit 2 storing educational material for presentation by audiovisual display 4 and providing correct answers to a comparator 10 for evaluation of the students answers keyed-in at 9, and a performance control unit which delivery signals to a checking unit 15 for comparison with signals measuring the students physical &c. state and indicative of a response to material delivered to 4 over line 8. The more elaborate configurations required by individual machines for the various phases are described in connection with schematic illustrations of the apparatus required. It is stated that the system may be used to teach (for example) languages, academic subjects, or technical skills, or for psychotherapy.