baber/WOPTO huggingface dataset:
Patent GB-1424249-A (GB)
Title: Isotope separating with selective ionization
IPC: H01S3/00
Filed: 1973-10-24
Abstract: 1424249 Isotope separation JERSEY NUCLEAR-AVCO ISOTOPES Inc 24 Oct 1973 [2 Feb 1973] 49420/73 Heading H1D In a selective photo-ionization method of separating U 235  from U 238 , by irradiating uranium vapour with laser irradiation, the radiation is selected to have a photon energy which is less than half the ionization energy from the ground state of either isotope thereby necessitating a three-photon interaction to cause ionization from the ground state. At least two radiations are applied of frequency such as to raise atoms of the desired isotope U 235  to two intermediate levels, ionization being caused by a third radiation or a second interaction with one of the first two radiations. The improvement realized by the method is that the probability of ionizing a U 238  atom by a three-photon interaction through virtual energy levels is much less than the corresponding probability when two photons are capable of ionization.
Patent GB-1143129-A (GB)
Title: A thermochemical gas analyzer
Inventor: BIRENBERG ISAAK ELIANOVICH
IPC: G01N27/16
Filed: 1966-11-08
Abstract: 1,143,129. Measuring gas composition electrically. GOSUDARSTVENNY PROEKTNOKONSTRUKTORSKY I NAUCHNO ISSLEDOVATELSKY INSTITUT PO AVTOMATIZATSII UGOLNOI PROMYSHELENNOSTI and INSTITUT GORNOGO DELA IMENI A.A. SKOCHINSKOGO. Nov. 8, 1966, No.50007/66. Heading G1N. A portable gas analyzer of the catalytic-oxidation type comprises a platinum measuring filament 8 mounted on a hollow cylindrical carrier of active alumina and coated with an active layer of finely dispersed metals of the platinum group. This forms, with a similar but uncoated element 9 two arms of an unbalanced bridge supplied from re-chargeable cells 25. The length-to-diameter ratio of the cylindrical carriers is specified and is said to ensure that a change in supply voltage is compensated by a corresponding change in voltage across the active filament. A contactmaking indicator 15 is connected across the other diagonal of the bridge and if the concentration of gas (methane) exceeds a given value, or if an open-circuit in the bridge causes a full-scale deflection, contacts 33 or 34 are closed so that an audio oscillator and amplifier comprising transistors 27, 38 are connected to energize both a loud-speaker 42 and a warning lamp 41. Conversely, low supply voltage closes contacts 35 to again energize the alarm circuits.
Patent GB-1472905-A (GB)
Title: Process for the production of coloured polyurethane
IPC: C08G18/00
Filed: 1974-11-19
Abstract: Polyurethane foams are coloured in the course of their preparation by adding dye solutions to the foam formation reactants before or during the reaction. The addition during continuous foam formation can be by means of a metering pump. The dye solutions contain (a) one or more dyes which all have at least one amino or hydroxyl group capable of an addition reaction with isocyanates, and (b) a solvent comprising one or more of the following compounds having a boiling point above 180 DEG C: aliphatic or aromatic esters of phosphoric, phthalic or adipic acid, alcohols, ketones, lactones, ethers. The process produces a strong, chemical bond between the dyes and the foam molecules, which is not achievable with pigments. Solvents of the kind mentioned make it possible to avoid interfering with the process of foam formation and impairing the properties of the foam.
Patent GB-1516479-A (GB)
Title: Battery enclosure
IPC: B60K1/04
Filed: 1976-12-01
Abstract: 1516479 Box fastenings TOWMOTOR CORP 1 Dec 1976 [5 April 1976] 50167/76 Heading E2A [Also in Divisions B7 and H1] The battery enclosure of an electricallydriven fork-lift truck comprises a pivotal locking member 86 releasably secured, by a slide member 94 engaging in a recess 96, in a locking position in which it limits upward movement of an edge portion 56 of a top panel 52 of the enclosure.
Patent GB-1444575-A (GB)
Title: Cephalosporin c isolation process and intermediate compounds therefor
IPC: C07D501/20
Filed: 1973-10-30
Abstract: 1444575 Purification of cephalosporin C and intermediates therefor ELI LILLY & CO 30 Oct 1973 [13 Nov 1972 19 Sept 1973] 50508/73 Heading C2C The invention comprises a process for separating a cephalosporin C of the formula in which each M is hydrogen or an alkali metal, and R is hydrogen, acetoxy, hydroxy, or methylthio, from polysaccharide and proteinaceous impurities, which comprises (A) reacting the crude cephalosporin C of Formula (I) in an aqueous liquid medium containing a miscible, inert organic solvent and containing said impurities with a 2,4-dichlorobenzoyl halide or a 4-chlorobenzoyl halide to form a novel N-acyl cephalosporin C of the Formula (II) in which X is hydrogen or chlorine and R is as defined above, which compound is soluble in the aqueous-organic liquid medium; and (B) separating polysaccharide and proteinaceous impurities from said N-acyl cephalosporin C. (II) may be converted to 7 -aminocephalosporanic acid by standard methods. The invention also comprises (II) in the form of a quinoline salt as well as the free acid (II).
Patent GB-1147506-A (GB)
Title: A non-electrolytic plating method for thermoplastic resin mouldings
IPC: C23C18/24
Filed: 1967-11-09
Abstract: 1,147,506. Treating polymers. SUMITOMO NAUGATUCK CO. Ltd. 9 Nov., 1967 [10 Nov., 1966], No. 50975/67. Heading C3P. [Also in Division C7] A thermoplastic resin moulding, e.g. of ABS resin, acrylonitrile-styrene copolymer, polyethylene, polystyrene or polypropylene, is pretreated prior to non-electrolytic plating by immersion in a solution of sulphuric acid and chromic acid or chromate whilst carrying out electrolytic reduction of chromium ions in the solution during the period of immersion. The solution may also contain nitric acid, phosphoric acid or acetic acid. The electrolysis may be carried out using a lead anode, and an iron- or chromium-base alloy as cathode, e.g. stainless steel, chromium-aluminium-steel, Nichrome (Regd. Trade Mark), high silicon steel or austenitic cast iron. The solution may be agitated during electrolysis, e.g. by mechanical stirring or by having air blown through it. The mouldings may then be dipped in hydrochloric acid containing first stannous chloride and then palladium chloride, coated non-electrolytically with nickel or copper and may thereafter be electro-plated with copper, e.g. from a copper sulphate bath containing no lustring agent.
Patent GB-1273910-A (GB)
Title: Recovering acrylonitrile from chloroprene monomer
IPC: C07C21/21
Filed: 1970-10-27
Abstract: 1,273,910 1,273,910. Recovering acrylonitrile from chloroprene monomer. TOYO SODA MFG. CO. Ltd. 27 Oct., 1970 [28 Oct., 1969], No. 51040/70. Heading C2C. Acrylonitrile is extracted from a mixture thereof with chloroprene monomer by means of a concentrated aqueous solution of zinc chloride at a temperature of from the freezing point of the zinc chloride to 30 C.
Patent GB-1367508-A (GB)
Title: Process and apparatus for extracting soluble substances from fibrous  materials
IPC: C13B10/04
Filed: 1971-11-03
Abstract: 1367508 Extracting sugar juice H S HODDING 3 Nov 1971 51044/71 Heading C6B [Also in Division B1] Soluble substances are extracted from subdivided fibrous material, e.g. sugar cane, by apparatus in which a bed of the fibrous material is compressed by means having a surface which is perforate for drainage of the extracted liquid, and in which an imbibition liquid is introduced to the bed as it leaves the compression means. In an embodiment the fibrous material, broken into short lengths by a fiberizer (not shown), is fed to a maceration carrier (not shown) by which it is conveyed to the upper end of a shoot 31. Whilst on the carrier the material is supplied with imbibition liquid recirculated from sieve areas on the carrier and from later stages of the apparatus. The material, or bagasse, leaving the shoot 31 forms a bed on a roller 33 which has perforations 34 and then enters the nip between the roller and a second roller 32 which is carried by arms 313 pivotally mounted at 321 and adjustably weighted by liquid in its hollow interior. Liquid expressed from the bagasse and passing through the perforations is collected in a stationary casing 36 from which it is recirculated to the maceration carrier. As the bagasse leaves the nip it is collected on a scraper 48 and supplied with imbibition liquid from a trough 46 discharging over a plate 40. The trough, which contains a paddle 41 to maintain solids in suspension in the liquid and is mounted on the arms that carry the roller 32, is fed with liquid recirculated from a later stage. Surface projections on the roller 32 assist in feeding the bagasse to the nip and also coact with the plate 40 to define the width of the liquid discharge channel and remove any solid matter therefrom. The scraper 48 discharges the bagasse on to a maceration carrier 44, which has a sieve area 45, and feeds it to the next stage of the apparatus, comprising a roller unit similar to that shown. Several such stages are arranged in succession, terminating in a high pressure mill or a cone press. Liquid from the last stage is heated before it is recirculated, and heated make-up water is supplied to one of the intermediate stages.
Patent GB-1367567-A (GB)
Title: Keyboard musical instrument
IPC: G10D13/08
Filed: 1972-11-06
Abstract: 1367567 Keyboard musical instruments MUSIKINDUSTRIELL FORSKNING MIFO AB 6 Nov 1972 [9 Nov 1971] 51096/72 Heading G5J In a keyboard musical instrument the sound is generated by striking bars held by separate resiliently deformable members above and below the bars. As shown steel bars 11 are held at nodes by rubber cords 13 between wood or metal boards 12. Depression of a key 1, which is assisted by a spring 17 causes a hammer 3 mounted on a leaf spring 4 to strike the corresponding bar 11. On release of the key, a rubber tube, cord or cloth damper 6 is brought into contact with the end of the bars 11. A sustain pedal rod 10 allows all the dampers to be removed from the rods. The key stop 20 is a rubber tube. Touch may be varied by a cam 19 and follower 19a which adjust the degree of assist provided by spring 17. An electromagnetic pick up 14 may be provided for electronic amplification.
Patent GB-1009811-A (GB)
Title: Semiconductor structures
IPC: H01L21/00
Filed: 1963-12-31
Abstract: 1,009,811. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. Dec. 31, 1963, No. 51284/63. Heading H1K. An ohmic contact is made to a diffused layer of one conductivity type in a region of the opposite conductivity type by depositing an epitaxial layer on the diffused layer and fusing an ohmic contact to the epitaxial layer. As shown, Fig. 7, an NPNP switching device is manufactured by diffusing indium, gallium, aluminium, or boron into the surface of a circular N-type silicon wafer to produce P-type surface regions 17, 18. The top surface of the wafer is oxidized and a photolithographic technique is used to produce a mask through which antimony, arsenic, or phosphorus is diffused to produce the annular emitter region 28. The remaining oxide layer is removed and an epitaxial layer 36 of degenerate N-type silicon is deposited over the entire top surface of the wafer by decomposition of silicon tetrachloride and a chloride or other halide of the doping material carried in a hydrogen stream. The sides of the emitter region are then isolated from the surrounding regions by etching annular grooves 40, 42. The epitazial layer and part of the surface of the gate region 17 are also removed by etching and ohmic contacts are produced by alloying a foil 48 of gold containing antimony, arsenic or phosphorus to the epitazial layer convering the emitter region, and alloying foils 52, 54 of gold containing boron, aluminium, gallium or indium to the exposed surface 43 of region 17 and to the underside of the wafer respectively. In a second embodiment, Fig. 10, the diffused regions 17, 18, and 28 are produced as in the first embodiment, an oxide layer 60 is formed over the entire surface of the wafer, an annular window is etched in the layer to expose the emitter region 28 and a degenerate N-type silicon epitaxial layer 62 is deposited on top of the oxide layer so that it makes contact with the emitter region 28 through the window. A window is etched in the epitaxial and oxide layers 62, 60 to expose the gate region within the emitter ring, and the oxide layer is also removed from the lower face of the wafer. Ohmic contacts 64, 68, 70 are made to the emitter, gate, and collector electrodes by alloying doped gold foils to the wafer. The original wafer may be a slice of single crystal or dendritic crystal material. Specifications 889,058 and 913,674 are referred to.
Patent GB-512846-A (GB)
Abstract: 512,846. Cyclic amidine derivatives; foaming agents. I.G. FARBENINDUSTRIE AKT.- GES. March 18, 1938, No. 8392. Convention date, March 18, 1937. [Classes 2 (iii) and 15 (ii)] A cyclic amidine derived from an aliphatic diamine and containing an amino, imino or hydroxy group, is reacted with a 1 : 2-alkylene oxide or a halogen derivative of a polyhydric alcohol. In examples : (1) undecylimidazoline, heptadecyltetrahydropyrimidine, heptadecenylimidazolinehydroxypropanesulphonic acid, N - benzylhydroxyheptadecyltetrahydropyrimidine, phenoxymethylimidazoline and o-chlorphenoxymethylimidazoline are reacted with ethyleneoxide ; (2) heptadecenylimidazoline and undecyldihydroxypropylimidazoline are reacted with propyleneoxide ; (3) undecylimidazoline is condensed with a polyglycerolchlorhydrin. The products are stated to be foaming agents and auxiliary agents in the textile and leather industries. Lysidine, Á-undecyl-N-(aminoethyl) imidazoline, pentadecyl - N - ethylhydroxytetrahydropyrimidine (prepared by reacting palmitic acid with 2- hydroxy-1 3-diaminopropane in the presence of the hydrochloride of the latter and treating the product with diethylsulphate) and propyl- and butyl-imidazoline are specified cyclic amidines. Monochlordiglycolether may be used for the treatment of the cyclic amidines. Phenoxymethylimidazoline is made by condensing phenoxyacetic acid with ethylenediamine.
Patent GB-1460272-A (GB)
Title: Machines for treating turf surfaces
IPC: A01B45/02
Filed: 1972-11-09
Abstract: 1460272 Turf-treating machines; height adjustment SISIS EQUIPMENT (MACCLESFIELD) Ltd 9 Jan 1974 [9 Nov 1972] 51638/72 Headings A1B and A1F A turf-treating machine comprises instrumentalities 14, a body portion 10, ground wheels 16, 18, a handle 22, a motor 20 and adjustment means 24 whereby the vertical position of the instrumentalities 14 relative to the ground wheels 16, 18, may be adjusted into various operating positions or an inoperative position. The wheels 16 are mounted on arms 26 pivotally attached to the body portion 10, one of the arms 26 being secured to a lever 28. The lever 28 is moved to engage notches provided in an angle-iron 32. thus raising or lowering the instrumentalities 14. The instrumentalities 14 may be cutters or tines.
Patent GB-1107941-A (GB)
Title: Improvements in or relating to an apparatus and a method for working conductive material by electric spark discharge
Inventor: JACKSON THOMAS MEIRION
IPC: B23H9/06
Filed: 1965-12-06
Abstract: 1,107,941. Spark erosion. STANDARD TELEPHONES & CABLES Ltd. 6 Dec., 1965, No.51640/65. Addition to 1,105,411. Heading B3V. In a spark erosion apparatus as described in Application No. 36578/64 the resilient electrode 16 is carried by a balanced head 33 provided with electro-magnetic lifting means 43. The apparatus is of particular use in removing parts of vacuum deposited conductive films on glass substrates. Electrode 16 is secured to the end of a piezo-electric lead zirconate titanate transducer 17 supplied with rectangular pulses from a source (19), Fig. 1 (not shown). The transducer is fastened to an insulated member 33 balanced by a counterweight 41 and resiliently pivoted by springs 39, 40 to a support 34 pivoted at 53 to an arm 21 adjustable in two horizontal directions by screws (23), Fig. 1 (not shown). The support 34 carries an electromagnet 43 which is energized to attract an armature 49 on the member 33 for stopping the erosion operation. Fine vertical adjustment of the electrode is provided by screw 51. In one embodiment, Fig. 2 (not shown), the electrode is non-rotatably secured by a spring (55) in jewel bearings (56), (57) carried by a member (30) clipped to the end of the transducer 17. The electrode may or may not make contact with the workpiece (13), (14), Fig. 1 (not shown), disposed in a bath of dielectric (12). Alternatively air may be used as the dielectric. Spark making pulses are supplied from a D.C. source through resistor (24) which charges working capacitor (25).
Patent GB-1319159-A (GB)
Title: Amino-s-triazines
IPC: C08G73/10
Filed: 1970-10-30
Abstract: 1319159 Amino-s-triazines CIBA-GEIGY AG 30 Oct 1970 [31 Oct 1969] 51737/70 Heading C2C [Also in Division C3] Novel amino-s-triazines of the formula in which R<SP>1</SP> is C 1-8  alkylene, C 3-8  cycloalkylene, C 6-14  arylene, C 7-14  alkarylene or C 7-14  aralkylene, or a divalent group derived from furan, thiophene or pyridine or having the formula where X is -O-, -S-, -SO 2 -, -CO-, -CH 2 - or an alkyl or aryl-substituted methylene radical, and R<SP>2</SP> is hydrogen, C 1-8  alkyl, optionally substituted C 6-14  aryl, C 7-14  alkaryl, C 7-14  aralkyl, amino, C 3-8  cycloalkylamino, C 12-28  diarylamino, bis-(C 1-4  alkyl)amino, unsubstituted or N-alkyl substituted C 7-11  anilino, a pyridino, piperidino or morpholino group, are prepared, when R<SP>2</SP> is hydrogen or a hydrocarbon value, by (i) heating a cyano-nitro compound NO 2 -R<SP>1</SP>-CN with an acid chloride R<SP>2</SP>COCl and ammonium chloride in the presence of a Friedel-Crafts catalyst and reducing the resulting dinitro compound to the diamine, (ii) reacting a compound NO 2 -R<SP>1</SP>-CN with an alcohol in the presence of an alkoxide of the same alcohol, reacting the product with ammonium chloride and condensing the resultant nitroamidine NO 2 -R<SP>1</SP>-N = CHNH 2  with an anhydride (R<SP>2</SP>CO) 2 O and the salt of the acid derived from the anhydride and reducing the resulting dinitro compound, or, when R<SP>2</SP> is an amino group, (iii) by reacting cyanogen chloride with an amine R<SP>2</SP>H and condensing the resultant cyanoamine R<SP>2</SP>CN with a compound NO 2 -R<SP>1</SP>-CN in the presence of a Friedel-Crafts catalyst and reducing the nitro compound to the amino triazine. The diamines can also be obtained by nitration and subsequent reduction of the corresponding -R<SP>1</SP>H compounds. Those compounds in which R<SP>2</SP> is amino are also prepared from the corresponding chloro-triazine and the required amine. The novel triazines are used as epoxy resin hardeners (see Division C3). 2 - Hydroxy - 4,6 - bis - (3<SP>1</SP>- nitrophenyl) - striazine is obtained by condensing p-nitrobenzamidine HCl with phosgene and on treatment with POCl 3  yields the corresponding 2-chloro derivative.
Patent GB-1046540-A (GB)
Title: Laying nest for poultry farms
IPC: A01K31/16
Filed: 1964-12-21
Abstract: 1,046,540. Nest boxes, J. KUHLMANN. Dec. 21, 1964 [Sept. 23, 1964], No. 51775/64. Heading A1M. A laying nest for poultry comprises a trough 1 within which is located a conveyer 2 and chaff 8, and a nest box arranged above the trough and sub-divided by partitions 9 into individual laying comparts each having a floor 10, 11 or 12 inclined downwardly in the direction of movement of the conveyer and arranged so that the lower end of a floor underlies the upper end of the adjacent floor, there being a space 14 through which eggs can roll into the trough. The conveyer 2 comprises a chain 3 on which are arranged cross pieces 4, the conveyer being actuated intermittently.
Patent GB-1372313-A (GB)
Title: Conveyor carriers
IPC: B61B10/02
Filed: 1971-11-09
Abstract: 1372313 Conveyer carriers JERVIS B WEBB CO 9 Nov 1971 [10 Nov 1970] 51862/71 Heading B7L  In a conveyer carrier having a portion 18 (including bars 30 and 31) to be supported by an overhead conveyer track 14 and a load carrying portion 20 (including cross-member 47) suspended therefrom for swinging movement in a plane lying in the path of carrier travel by means of a suspension 22 adapted to damp such swinging movement, the suspension 22 comprises bearing means (such as a cylindrical tubular member 46) secured to one of the carrier portions (the load carrying portion 20 as illustrated) and providing an arcuate bearing surface 50 which slidably engages a pair of arcuate bearing segments 58, 60 of combined bearing and braking means 52, secured to the other carrier portion track supported portion 18 by bolts 53 as illustrated), at circum- . ferentially spaced locations on the bearing surface 50 to offer frictional resistance to such swinging movement. The combined bearing and braking means may comprise, instead of rigidly connected bearing segments 58 and 60, a pair of members 70 and 72, Fig. 5, which each have bearing segments formed by a load supporting segment 74, 78 and a circumferentially spaced braking segment 76, 80 and individual pivot bolts 53. Swinging movement of the load carrying portion 20 relative to the track supported portion 18 produces an increase in the frictional resistance generated between surface 50 and one of the bearing segments which corresponds to the increase in the force normal to that bearing segment. This force is proportional to the secant of the angle between the line of action of the weight of the load carrying portion on the bearing segment and a line normal to the bearing surface 50 at the area of its contact with that bearing segment.
Patent GB-1244204-A (GB)
Title: Hydraulic-electric speed control governor
IPC: G05D13/00
Filed: 1968-11-01
Abstract: 1,244,204. Automatic speed-control CATERPILLAR TRACTOR CO. Nov.1, 1968 [Nov.24, 1967], No.51953/68. Heading F1B. [Also in Division G3] An electrical and a mechanical governor co-operate to control the fuel supply to an engine 11. The mechanical governor comprising flyweights 43 is driven by the engine 11 through gears 51, 49. The electrical governor 21 (not described) receives speed responsive pulses from a magnetic pick-up 17 and provides a speed dependent voltage to an electromagnetic actuator 23. The actuator 23 is coupled by a lost motion device 37 to a cylindrical member 39 coupled through an hydraulic servomotor 61 and crank 93 to a rack 59 operating a fuel supply valve 13. The flyweights 43 act through a conical member 55 on the member 39. The speed setting spring pressure 57 is altered by a lever 83 and piston 109 responding to the pressure of lubricating oil in the engine. The arrangement is such that, with the engine stationary, when a switch 27 is closed to energize the electrical control the actuator 23 fully opens the fuel valve 13. The engine is then cranked. As the engine begins to turn, flyweights 43 move to shut down the fuel valve to maintain the engine at idling speed until the engine has warmed up. As the engine warms up oil pressure rises driving piston 109 downwards altering the effective speed setting of the mechanical governor upwards until the electrical governor takes over speed-control to maintain constant running speed. If oil pressure fails the mechanical governor comes back into operation to reduce engine speed to minimum. If manual speed-control is required a lever may be coupled to lever 83 for manual control of spring pressure. An adjustment 117 sets the minimum engine speed.