baber/WOPTO huggingface dataset:
Patent GB-1167747-A (GB)
Title: Precipitation of Polymeric Hydroxyl Compounds
IPC: C08B37/00
Filed: 1966-11-15
Abstract: 1,167,747. Recovering polymeric hydroxyl compounds. ASHLAND OIL & REFINING CO. 15 Nov., 1966 [16 Nov., 1965], No. 51190/66. Headings C3P and C3U. Polymeric hydroxyl compounds, e.g. PVA or polysaccharides other than dextrans, are recovered from their aqueous solutions by (a) adding to the solution a base so as to impart an alkaline pH thereto, (b) adding to the solution before, during or after pH adjustment a soluble salt of a Group IIA or transition metal of the Periodic Table according to Mendeleef and (c) recovering the precipitate of polymeric hydroxyl compounds thus formed, the base added at step (a) not having an ability to complex with the added metal cation. Suitable cations are Fe<SP>+++</SP>, Cu<SP>++</SP>, Zn++, Ni<SP>++</SP> and Ca<SP>++</SP>. From 1-30% by wt. of cation may be used, based on the polymer, whose solution may be of 0À01-50% concentration. The added base may be organic or inorganic; NaOH is preferred. A specified polysaccharide is made by the fermentation of sorghum flour and NaH 2 PO 3 , using Xanthomonas Campestris.
Patent GB-1127532-A (GB)
Title: Friction winches
Inventor: ADEY JOHN CHARLES
IPC: B66D1/20
Filed: 1965-12-04
Abstract: 1,127,532. Winches. BRITISH HOIST & CRANE CO. Ltd. 19 Dec., 1966 [4 Dec., 1965], No. 51543/65. Heading B8B. A friction driven winch comprises a winch drum 1 freely rotatable in bearings 2 in a neutral position and movable between a first position in which the drum 1 is connected to a drive shaft 4, and a second position in which the drum is connected to a braking mechanism 5. The drum shaft 9 is movable by an hydraulic piston and cylinder arrangement 7 under the control of an hydraulic valve 14. The latter is normally actuated manually between an " up " condition in which the drum 1 is driven to elevate a hoist coupled thereto, a " neutral " condition in which free fall of the hoist occurs, and a " stop " condition in which the drum is braked. The valve 14 is biased to the " stop " condition. This manual operation of the valve 14 is overridden by a valve 21 which when electrically operated, switches the valve 14 into the " stop " condition. The electrical valve 21 is operated by trip switches 32, 33 which limit the travel of the hoist, or may also be operated by trip switches 30 at intermediate hoist stations depending on whether they are selected to operate via selector 31. The drive shaft 4 having drive wheels 3 is driven via gearing 6 by a petrol engine. In another embodiment, the drive shaft is driven by an electric motor.
Patent GB-1374308-A (GB)
Title: Method and apparatus for removing particles of paper from tobacco
IPC: B03C7/08
Filed: 1971-11-09
Abstract: 1374308 Electrostatic separation HAUNIWERKE KORBER & CO KG 9 Nov 1971 51988/71 Heading B2J [Also in Division A2] Apparatus for removing particles of paper from a stream of tobacco carried on a vibratory feed channel 1 comprises a driven endless belt 2 of insulating material which is electrostatically charged by the action of a rotating brush 7 and which cooperates with the channel 1 to form a zone A in which the paper and some tobacco particles are attracted to the belt 2, the remaining tobacco fraction 19 then passing to another vibratory conveyor 21 where it is carried off. The particles adhering to the belt are exposed to steam or water vapour in a zone B, whereby the electrostatic charges are dissipated so that most of the paper falls from the belt into a container 12. The belt 2 is then dried by hot air flowing from a pipe 14, and residual particles of paper and tobacco are removed by a scraper 18 prior to re-charging of the belt by the brush 7. A rotating drum of plastics material may replace the belt 2 (Fig. 2 not shown). (For Figure see next column)
Patent GB-1409239-A (GB)
Title: Process for the preparation of 3alpha-hydroxy-5alpha-steroids
IPC: B01J27/00
Filed: 1971-11-11
Abstract: 1409239 3α-Hydroxy-steroids GLAXO LABORATORIES Ltd 8 Nov 1972 [11 Nov 1971] 52465/71 Heading C2U 3α-Hydroxy-5α-steroids, including the novel 3α - hydroxy - 19 - nor - 5α - pregnan - 20 - one, are prepared by reducing 3-oxo-5α-steroids in the presence of an organic base with a reduction system prepared from a trivalent phosphorus compound, an iridium compound and water, the system being prepared in the presence or absence of the steroid. An organic solvent, particularly an alcohol, is also preferably present. The product generally contains a small proportion of the 3#-epimer. One product, viz. 3α-hydroxy- 5α - pregn - 16 - ene - 11,20 - dione, may subsequently be hydrogenated to 3α-hydroxy-5α- pregnane-11,20-dione. 2α - Methyl - 5α - pregnane - 3,11,20 - trione is prepared by reducing 20,20-ethylenedioxy-2- hydroxymethylene - 5α - pregnane - 3,11 - dione (prepared from the 2-unsubstituted compound and ethyl formate) to 20,20-ethylenedioxy-2α- methyl - 5α - pregnane - 3,11 - dione and hydrolysing this. 3α - Hydroxy - 16α - methyl - 5α- pregnane - 11,20 - dione is prepared from 3α- hydroxy - 5α - pregn. - 16 - one - 11,20 - dione and methyl lithium. 21-Bromo-3α,20#-dihydroxy 5α - pregnan - 11 - one is prepared by reduction of the corresponding 11,20-dione 20#,21 - epoxy- 3α - hydroxy - 5α - pregnane - 11 - one is prepared from 21 - bromo - 3α - hydroxy - 5α - pregnane- 11,20-dione by reductive cyclization. The corresponding 16α-methyl homologue is prepared similarly, the precursor 21-bromo-3α-hydroxy- 16α - methyl - 5α - pregnane - 11,20 - dione being prepared by bromination of the 21-unsubstituted compound. 21-Benzyloxy-5α-pregnane- 3,11,20-trione is prepared from 21-benzyloxy- 3α,20# - dihydroxy - 5α - pregnane - 11 - one, in turn prepared from 20#,21-epoxy-3α-hydroxy- 5α - pregnan - 11 - one and benzyl alcohol. The corresponding 21-cyclopentyloxy-chloroethoxy and chloropropoxy compounds are prepared similarly as are 3α,20#-dihydroxy-21-methoxy- 16α - methyl - 5α - pregnan - 11 - one and 21- methoxy - 16α - methyl - 5α - pregnane - 3,11,20- trione. The novel steroid has anaesthetic properties and may be made up into anaesthetic compositions with suitable carriers and surfactants.
Patent GB-1530323-A (GB)
Title: Semiconductor waveguide structures
IPC: G02B6/122
Filed: 1975-12-22
Abstract: Methods are described for fabricating waveguides having an "embedded" (or "submerged") ridge or heterostructure in liquid-phase epitaxy. The concept is based on grooves (11), which are formed in the substrate (10) and which are preferentially filled when layers are grown on this substrate in liquid-phase epitaxy. The interruption of the epitaxial growth necessary in conventional methods, and the etching at this interruption stage are dispensed with. <IMAGE>
Patent GB-1523220-A (GB)
Title: Injection laser
IPC: H01S5/042
Filed: 1976-12-16
Abstract: 1523220 Semiconductor lasers INTERNATIONAL BUSINESS MACHINES CORP 16 Dec 1976 [24 Dec 1975] 52597/76 Heading H1C In a resonant cavity injection laser comprising a monocrystalline semi-conductive body including at leat one P-N junction 22/23 radiation generated in an emitter section E is Q-switched by a saturable absorber section A formed by ion implantation.
Patent GB-1056618-A (GB)
Title: Improvements in strip-line circulators
IPC: H01P1/383
Filed: 1964-12-29
Abstract: 1,056,618. Circulators. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Dec. 29, 1964 [Dec. 31, 1963]. No. 52603/64. Heading H1W. The ports of a strip-line circulator are shunted by capacitors. It is stated that this has the effect of lowering the optimum frequency of operation whereby increase in the diameter of the ferrite disc, normally necessary for operation at reduced frequencies, may be avoided. The invention may be applied to 3-port circulators using strip-lines of the kind comprising symmetrical conductors or those of the kind using a single strip conductor between ground planes. The reactance of the capacitors should be less than the impedance of the circulator ports, e.g. for an operating frequency of 240 MHz a capacitance of 20 pF is used, giving a reactance of 33# compared with an input port impedance of 50#.
Patent GB-1495520-A (GB)
Title: Control of a dc motor of a washing machine
IPC: D06F34/08
Filed: 1974-12-06
Abstract: 1495520 Automatic control of speed PHILIPS GLOEILAMPENFABRIEKEN NV 6 Dec 1974 [10 Dec 1973] 52862/74 Heading G3R [Also in Division D1] A D.C. motor in a washing machine is supplied from the mains through a controlling rectifier bridge 5 comprising two diodes and two thyristors, the latter being controlled by regulator 6 in accordance with a comparison of the back e.m.f. of the motor on line 14 with a reference voltage on line 13. A safety control system 7 includes a transistor which is normally non-conductive and has its base connected to a comparator 8 which compares the back e.m.f. on line 14 with the output of a reference signal generator 15. If the supply to the reference signal generator 15 is interrupted either by a supply failure or some machine function which causes a contact in switch box 16 to open during a spin drying phase a transistor in control system 7 is switched on to disable the regulator thyristors and thus stop the motor. The reference signal generator provides different voltages for washing and spin drying and the voltage provided is selected by contacts in switch box 16. The timer for the machine operation includes a contact 10. The purpose of the arrangement is to ensure that once the motor has slowed down or been stopped during a spin drying phase it reverts to the beginning of the cycle of tub emptying, distribution and spinning when it is started again. Sensors are provided to determine the water level in the tub, an excessive unbalance movement of the tub, the temperature of the washing water and that the drum access door is closed. An immersion heater is connected in series with the motor and may be provided with a further sensor for detecting overheating.
Patent GB-1507657-A (GB)
Title: Projectile fired from guns
IPC: F42B10/38
Filed: 1973-11-14
Abstract: 1507657 Anti-tank projectiles RHEINMETALL GmbH and DEUTSCHE FORSCHUNGS - UND VERSUCHSANSTALT FUR LUFT - UND RAUMFAHRT eV 14 Nov 1973 [23 Nov 1972] 52909/73 Heading F3A An anti-tank projectile having a body through which an appreciable proportion of the approach air is guided so as to reduce the air resistance, comprises an inlet diffuser 2, an intermediate chamber 15 and an exit or expansion nozzle 13 which are each located between a cylindrical cover 5 and a central active-charge carrier 3, the latter forming the propulsive base and containing the charge 4 in a heavy-metal core. The cover 5 is subdivided into a rear part 5<SP>1</SP> fixed by crosspieces 6 to the carrier 3 and a front part 511 which is longitudinally displaceable. The carrier 3 is provided with a nose 7 designed in accordance with high velocity flight. An annular gap 9 is formed between a conical shoulder 8 on the carrier 3 and the front part 5<SP>11</SP> of the cover 5, and the rear end of a conical tubular part 7<SP>1</SP> of the nose 7 extends into the gap 9, forming an annular gap 10 between the tubular part 7<SP>1</SP> and the carrier 3. The front part 511 of the cover 5 is provided with longitudinal slots 11. The inner wall of the front part 5<SP>11</SP> is provided with a valve ring 12 which, when the projectile is fired (as shown in the lower half of the drawing) rests against the shoulder 8 so that the annular gap 9 is closed. The cover 5, together with the valve ring 12 and the carrier 3, thus forms a propulsive base. After leaving the gun barrel, the front part 5<SP>11</SP> is thrust back by the approach air flow into the position shown in the upper half of the drawing. Bores 14 interacting with the annular gap 10 serve to lead off the flow boundary layer on the surface of the nose 7, enabling a field of flow with an isotropic sealing effect to be formed in the diffuser 2. Air entering the diffuser 2 is compressed practically without energy loss and emerges from the rear of the expansion nozzle 13. If necessary, an additional thrust can be generated by the combustion of a propellant in the intermediate chamber 15.
Patent GB-535265-A (GB)
Abstract: 535,265. Cash registers. VICBORG, K. M., and KOOPERATIVA FORBUNDET FORENING U.P.A. Oct. 6, 1939, No. 27354. [Class 106 (i)] The keys of a salesman's bank of keys are locked until freed by an insertable key lock and the inserted key cannot be removed until all the keys in that bank are returned to normal position. A rail 4 rocking on a shaft 5 extends along the bank so that its free edges can engage pins 6 on the stems 2 of the keys. The rail has a projection 7 to engage a slot in the bolt 8, Fig. 1, of a cylinder lock 16 which is moved against the action of a spring 14 by an eccentric pin 17 on the cylinder 16 when the inserted key is turned. The inserted key cannot be withdrawn unless the keys 2 of the bank are all at normal since the pin 17 is fouled by the tail end 21 of the bolt 8. To prevent zeroizing while any clerk's key 2 of the banks 3A or 3B is depressed a rail 25 is mounted to slide behind the clerk's locks 16 and a similar lock 23 controlling the zeroizing means, and has three semi-circular openings 27 and 29 to allow turning of the clerk's insertable keys while the zeroizing controlling key cannot be turned, and 28 to allow turning of the zeroizing control key when the clerk's keys cannot be turned. An extension 31 of the rail 25 lies between the casing and a cover which must be lifted to disclose the totalizer before zeroizing. Specification 509,441 is referred to.
Patent GB-1181506-A (GB)
Title: Control Device for Sterilizing Chambers.
Inventor: PEACOCK FRANK GERALD
IPC: A61L2/26
Filed: 1966-12-02
Abstract: 1,181,506. Control for autoclave. MATBURN (HOLDINGS) Ltd. 4 Dec., 1967 [2 Dec., 1966], No. 54085/66. Heading A5G. A sterilizing chamber, e.g. of a steam autoclave, has located within it a container charged with a monitoring liquid, the temperature of which controls the action of means operable to release the door of the chamber, e.g. when the temperature of the material which has been sterilized has dropped sufficiently, and/or operates means controlling the operation of the sterilizer. Fig. I depicts a stainless steel container 1 charged with a silicone liquid 2 and having a central chamber 3, sealed into the container, in which is placed a temperature-responsive element 4 which may be the bulb of a thermostatic bellows to which it is connected by a narrow bore tube 5 and which is used to operate an electrical switch. Electrical circuits incorporating this switch and which may be used to operate a signal, to progress the sterilizer controller to the next operating phase or to release a lock or catch on the sterilizer door, are shown in Figs. 2 and 3 (not shown).
Patent GB-1294468-A (GB)
Title: Intra-uterine contraceptive device
Inventor: MUNRO GRAHAM DONALD
IPC: A61F6/14
Filed: 1969-11-04
Abstract: 1294468 Intra-uterine contraceptives T J SMITH & NEPHEW Ltd 30 Oct 1970 [4 Nov 1969] 54094/69 Heading A5R An intra-uterine contraceptive, Fig. 6, comprises a longitudinally extending flexible member, preferably of synthetic non-toxic plastics, having a substantially uniform cross-section, e.g. as shown in Fig. 1, the member being adapted to be formed into a spiral or helical configuration having interconnected contiguous turns, by engaging the ends of the member and sliding in the direction of the arrow. The member comprises a spine portion or projection 3 and a jaw portion 4, the dimension A being greater than D but less than C, and dimension B being less than D to permit free sliding while maintaining engagement of portions of the member. Alternative but similar cross-sections may be employed and a plurality of jaw portions and complementary projections may be provided, Fig. 5 (not shown). Cuts I' and 2' may be made in the end portions of the member which cuts are adapted to engage and prevent total disengagement of the end portions. The member is preferably made by extrusion through a die, the product being cut into lengths of about 7 inches and gently heated while wrapped around a glass cylinder of about 2 inches diameter to programme the lengths into a loopshape. A radio opaque or magnetically detectable material is preferably incorporated into the member and a surgical thread (6), Fig. 9a (not shown) passed through the spine to facilitate unwinding of the loop by pulling the thread. An introducer tube (7), Fig. 10 (not shown), may be provided comprising a slightly curved plastics tube (7) with an aluminium rod (9) having a hook (10) at one end, for drawing the device into the tube, and a piston (11) at the other for pushing the device from the tube into the uterus when the tube has been inserted into the cervix.
Patent GB-1356130-A (GB)
Title: Detergent composition containing enzymes
IPC: C11D3/386
Filed: 1971-11-25
Abstract: 1356130 Detergent composition PROCTER & GAMBLE CO 25 Nov 1971 [27 Nov 1970] 54838/71 Heading C5D A detergent composition comprises (a) an organic detergent, (b) an organic sequestering agent or an inorganic builder, (c) 2-50 weight per cent of a per-acid and (d) a proteolytic enzyme of the serine-type produced by one of the following bacterial strains, identified by their deposit numbers at the National Collection of Industrial Bacteria (Aberdeen): 10144, 10145, 10146, 10147, 10148, 10286, 10301, 10304, 10307, 10309, 10310, 10311, 10312, 10313, 10315, 10316, 10317, 10319, 10320, 10321, 10322, 10323. The per-acid may be formed in situ from another per-compound and an "activator" therefor. The composition may also include a foam-suppressing agent, foam-boosting agent, anti-flocculating agent, brightener, dye, perfume or enzymestabilizer. Ingredients specified include: detergents: sodium linear dodecyl benzene sulphonates, sodium alkyl sulphates, tallow alcohol/ethylene oxide adduct and sodium tetrapropylene benzene sulphonate, inorganic builders. sodium tripolyphosphate, sodium silicate, and sodium sulphate, per-acids: per-acetic, per-benzoic, perphthalic and per-maleic acids, per-compounds: per-borate, activators: tetraacetyl methylene diamine, tetraacetyl ethylene diamine, tetraacetyl isocyanurate, benzoyl imidazole, phthalic anhydride and maleic anhydride. The composition may also include carboxymethyl cellulose and a hydrogenated fatty acid.
Patent GB-1328745-A (GB)
Title: Segregation process for the recovery of metals
IPC: C22B23/02
Filed: 1971-11-26
Abstract: 1328745 Segregation of ores NILUX HOLDING S A 26 Nov 1971 [26 Nov 1970] 55025/71 Heading C7D A segregation process for the treatment of ores, in which the ore is preferably preheated and then mixed with a halide salt and a reductant or elevated temperature, eg 750-800‹ C is improved by adding steam to the atmosphere in the segregation zone. The steam increases the partial pressure of hydrogen halide formed in the zone and results in an improved rate of metal segregation and may also help to suppress competing reactions. In an example a copper ore is mixed with 0À5% sodium chloride and 3 to 5% coke and treated with an inert gas stream containing 15 to 25% steam at 750-800‹ C. The process is equally applicable to nickel ores. The apparatus preferably includes a fluidized bed in which the ore is heated, and a segregation chamber into which the ore overflows from the bed and to which the other reagents are fed, the steam being fed into the chamber below the average level of the ore such that the atmosphere in the chamber contains 15 to 30% by weight of steam.
Patent GB-1098326-A (GB)
Title: Marking method for hot metal articles, particularly those at white heat
IPC: C09D7/61
Filed: 1965-12-20
Abstract: Metal blocks to be heated to "glowing" temperatures such as steel, lead, zinc, aluminum, brass or copper are marked for identification by a composition containing as pigment strontium chromate, magnesium oxide, chromium (III) oxide or a mixture thereof.  The composition may be in the form of an aqueous emulsion or a paste comprising an organic binder such as linseed or soya oil and other materials such as quartz flour and small amounts of turpentine, mica, silicone oil, silicon carbide and/or a drier.
Patent GB-1163918-A (GB)
Title: Disperse Disazo Dyes, their production and Use
Inventor: GROEBKE WOLFGANG
IPC: C09B29/033
Filed: 1966-12-09
Abstract: 1,163,918. Disperse disazo dyestuffs. SANDOZ Ltd. 9 Dec., 1966 [16 Dec., 1965], No. 55264/66. Heading C4P. The invention comprises disazo dyes of the general formula wherein A is a diazo component radical of the benzene or naphthalene series which may be substituted B is a phenylene or naphthylene radical which may be substituted by one or more C 1 -C 4  alkyl, alkoxy or alkylmercapto groups, D is a benzene radical having OH ortho or para to the azo group and may be further substituted by one or more chlorine, bromine or C 1 -C 4  alkyl or alkoxy groups, R 1  is H or C 1 -C 4  alkyl optionally substituted by a cyano group, R 2  is a C 1 -C 4  alkylene radical, y is -CO- or -SO 2 - and the dyes are free from carboxylic and sulphonic acid groups. They are prepared by coupling the diazo compound of an aminoazo dye of the general formula with a compound of the general formula in which formulµ n is 1 or 2 and has the same value in each formula and A, B, D, R 1 , R 2  and y have the meanings given above. The dyes dye aromatic polyesters, polyamides, cellulose di- and tri-acetate, polyacrylonitrile and polyvinyl compounds. Intermediate mono-azo dyes are prepared.
Patent GB-1441360-A (GB)
Title: Process of preparing ypsilon-lactone derivatives
IPC: B01J31/00
Filed: 1974-12-23
Abstract: 1441360 Gamma-lactone derivatives SAGAMI CHEMICAL RESEARCH CENTER 23 Dec 1974 [27 Dec 1973] 55618/74 Heading C2C γ-Lactones wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP>, R<SP>5</SP> and R<SP>6</SP> are hydrogen, C 1-4  alkyl or optionally halogen-substituted phenyl or R<SP>1</SP> and R<SP>2</SP>, and R<SP>5</SP> and R<SP>6</SP> may be linked to form C 4-7  cycloalkyl; and R<SP>7</SP> is hydrogen, C 1-3  alkyl, C 4-6  cycloalkyl or optionally C 1-3  alkyl-substituted phenyl, are made by reacting a diol with an orthocarboxylate where R<SP>8</SP>, R<SP>9</SP> and R<SP>10</SP> are C 1-5  alkyl or C 4-6  cycloalkyl, in the presence of an acid catalyst. The compounds of the above general formula are stated to be insecticides.
Patent GB-1395599-A (GB)
Title: Receiver for the determination of the direction of received wave energy
IPC: G01S3/46
Filed: 1972-12-01
Abstract: 1395599 Direction-finding systems FRIED KRUPP GmbH 1 Dec 1972 [3 Dec 1971 1 Sept 1972] 55682/72 Heading H4D A direction-finder includes either three or four transducers constituting two pairs, with one pair lying on a first axis and the other pair lying on a second axis which intersects the first at right angles, a respective AGC amplifier connected to each transducer, and an indicator coupled to the amplifier outputs so as to indicate the direction of incidence of wave energy received by the transducers. In the Fig. 2 embodiment, four receivers define a receiver (Rx) pair 1a, 1b and an orthogonal pair 2a, 2b, their outputs being fed via AGC amplifiers 5 to difference formers 6. The difference signals, U1, U2, are a measure of the directional components 4À1, 4À2 of incident wave energy and are correlated at 10 with a 90 degree phase shifted and AGC-amplified signal from an omni-directional Rx 3 to enhance their signal-to-noise ratio. Each correlator includes a multiplier 11 and integrator 12. The resulting correlation signals U1<SP>1</SP>, U2<SP>1</SP> deflect a CRT display 7 indicating the direction of incidence. In various modifications (a) the omni Rx3 and correlators are omitted, an omni signal being synthesised by summing the four AGC-amplified Rx signals and then 90 degree shifted and applied to modulate the CRT brightness (Fig. 1, not shown), or (b) the two Rx pairs are defined by four or only three receivers, there is no correlation or use of an omni signal, and the two signals of each Rx pair are phase-compared (Figs, 3 and 4, not shown).