baber/WOPTO huggingface dataset:
Patent GB-949073-A (GB)
Title: Power plant system and method of operating the same
IPC: G21D5/06
Filed: 1961-07-06
Abstract: 949,073. Nuclear power plant. COMBUSTION ENGINEERING Inc. July 6, 1961 [Dec. 8, 1960], No.24453/61. Drawings to Specification. Heading G6C. In a power plant a turbine is supplied with superheated steam by heat exchanges which are heated by a pressurised water reactor. The condensate from the turbine is first vaporized in a heat exchanger through which water from the reactor is circulated. The vapour is then superheated in a second heat exchanger through which steam from the reactor is passed. The superheated steam pressure at the turbine inlet is maintained constant by a pressure regulated valve at the vaporizing heat exchanger outlet. The reactor is self regulating, having a negative temperature coefficient of reactivity. Interstage superheating of the turbine is also provided.
Patent GB-508152-A (GB)
Title: Improvements in and relating to vacuum and like dusting and cleaning apparatus
IPC: A47L5/18
Filed: 1938-08-19
Abstract: 508,152. Vacuum cleaners. ENDELMAN, M. Aug. 19, 1938, No. 24460. [Class 8 (i)] Suction is produced in a tube a connecting the nozzle b with the dust bag c by a jet of air supplied through a port m, inclined at about 45 degrees to. wards the axis away from the nozzle. A steel liner a<1> prevents erosion by the jet. The supply of compressed air is controlled by a hand valve k. The appliance may form an auxiliary to a vacuum cleaner receiving compressed air from its fan.
Patent GB-150343-A (GB)
Title: Improvements in alloy steel
IPC: C22C38/22
Filed: 1920-08-24
Abstract: 150,343. Wills, C. H. June 9, 1917, [Convention date]. Hardening.-Steels containing small proportions of molybdenum, up to 1 per cent or a little over, are susceptible to various heat-treatments, specific examples being quenched at 1500‹ F. and drawn at 1080-1100‹ F., or quenched at 1580‹ F. and drawn at 1040-1050‹ F.
Patent GB-1021279-A (GB)
Title: Track laying vehicles
Inventor: BORISOV SERGEY MIKHAILOVICH
IPC: B62D55/30
Filed: 1963-06-20
Abstract: 1,021,279. Endless track vehicles. VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY INSTITUTE STROITELNOGO I DOROZHNOGO MASHINOSTROENIYA. June 20, 1963, No. 24613/63. Heading B7H. A track drive sprocket 20 and a driving- chain sprocket 19 are mounted on a common shaft 9 journalled in bearings 1 and 2 which are slidably mounted between two pairs of horizontal guides of which the lower ones 10 and 101 only are shown. The bearing 1 has an extension 8 to which is connected an adjusting screw 11, a further adjusting screw 14 being located between a bearing block, 3, 6 and a transverse beam 18.
Patent GB-752985-A (GB)
Title: Method of and apparatus for opening closed glass containers for example glass ampoules
IPC: B67B7/92
Filed: 1954-08-24
Abstract: 752,985. Glass ampoules. DICHTER, J. Aug. 24, 1954 [Aug. 24, 1953], No. 24622/54. Drawings to Specification. Class 56 Glass ampoules manufactured with a closed neck are opened, for filling, by heating the neck at the desired opening position, then rupturing the heated glass, and then forming the opening thus formed to predetermined diameter. In one form the ampoule is supported vertically between rotatable members and the neck is heated and a pull imparted to the heated neck; the opened end thus formed may be shaped by a mandrel, internally, or by centrifugal action against an external tool. In other forms cutting discs may be associated with the heaters and these discs may have shaping rollers associated with them for shaping in conjunction with mandrels. In another form in addition to heating the closed tip of the neck, the body of the ampoule is heated; the expansion of the air in the heated ampoule blows the heated tip into a semi-spherical shape and then bursts it open.
Patent GB-1396132-A (GB)
Title: Method of making semichemical pulp by means of an alkaline  digesting liquid having as main constituents na2s and na2co3
IPC: D21C11/00
Filed: 1972-05-25
Abstract: 1396132 Pulp manufacture DEFIBRATOR AB 25 May 1972 [4 June 1971] 24634/ 72 Heading D2W Pulp is made from lignocellulosic material in a yield of 65-90% by impregnating the lignocellulosic material with a digesting liquor comprising sodium sulphide and sodium carbonate, digesting the impregnated material in the vapour phase in an atmosphere of steam at 159-190‹C, cooling the resulting pulp and liquor to not less than 100‹C, adding molecular oxygen sulphur compounds therefrom, separating the pulp from the liquor, and recovering chemicals from the liquor. The latter step is carried out by concentrating the liquor by evaporation, and burning the concentrated liquor to yield a smelt consisting substantially of sodium sulphide and sodium carbonate, and dissolving the smelt in water to form fresh digesting liquor. As shown, wood chips are fed via conveyor 1 into a vessel 2 in which they steamed and then into a digester 7. The digesting liquid is supplied to the vessel via pipe 47 and steam via pipe 17. Digested chips and liquor are then fed into vessel 10 which is supplied with compressed air via line 12 from compressor 13, and subsequently blown therefrom into a centrifugal cleaner 20. Pulp removed from the bottom of the cleaner is defibrated by difibrator 25 and passed to a filter 26 for separation of liquor, liquor recovered in tank 28 is concentrated in evaporator 43, and burnt in furnace 44. The smelt obtained is dissolved in tank 45 and the fresh digestion liquor recirculated via line 47. The digested chips may be cooled during thier transfer from digester 7 to vessel 10 by using a watercooled conveyor.
Patent GB-225972-A (GB)
Title: Improvements in and relating to the mounting of swash members in swash plate and ratchet gearing
IPC: F16H23/02
Filed: 1923-10-04
Abstract: 225,972. Lavaud, D. S. de. Oct. 4, 1923. Variable-speed ratchet gearing.-A swashplate 1, Figs. 9 and 10, which acts through rods c and' ratchets to drive a shaft S is kept from rotating and restrained against axial movement due to the pull in the rods c by a non-rotary anchoring and thrust member 3. The rotary hub 6 of the swash plate is supported in an inclined position on the driving-shaft 7. The hub 6 is adapted to slide along the shaft 7, and' by means of axial and inclined slots 23, 24 and trunnions 21, 22, the inclination of the swash plate is varied as the plate moves logitudinally, so that the shaft S may be driven with variable speed. By the use of a yielding abutment 8, the variation may be rendered automatic. The swash plate 1 rides on journal bearings 5 on the hub 6 and is connected to a slidable forked end 4 upon the thrust member 3 by a gimbal connection shown in the diagram, Fig. 3. The gimbal ring 2 is connected by a pair of aligned pillars 10 to the plate 1 and by a perpendicular pair of aligned pillars 9 to the fork 4. The upper and lower halves of Fig. 9 are sections in different planes. The rods c are evenly spaced as shown in Fig. 10. Other forms of gimbal connections are described.
Patent GB-298351-A (GB)
Title: Improvements in and relating to caps for electric incandescent lamps and similar articles
IPC: H01K1/46
Filed: 1927-09-20
Abstract: 298,351. Lamp Caps, Ltd., and Barry, C. Sept. 20, 1927. Electric lamps.-Bayonet-joint pins 2 of electric lamp caps, after being passed through holes in the cap are headed as at 4 while electrically heated. The caps with the pins inserted are mounted in holders 13 provided with spring- pressed jaws for aligning the pins, the holders being secured to frames 16, which have slides 14 for carrying pin abutments 15, and spigots 17 for connection to a work turret 5, Fig. 3. The turret is indexed at intervals by geneva stop mechanism 10 driven by a motor 6, fixed cam rollers 19 being provided to actuate the pin abutments 15 so as to position the pins, as the work-holders are brought into the central longitudinal plane of the machine. Collars 28 on vertically sliding rods 21 actuated by cams 20 lift a bar 25 carrying pivoted-heading tools 29, during the indexing of the work turret, and then allow the heading tools to descend within the lamp caps to a depth determined by adjustable screws 26. On further descent of the rods 21, a bar 22 secured thereto actuates spring plungers 31 to force the heading tools, by means of arms 32. against the rivet ends. Each heading tool is connected to form part of the secondary circuit of a transformer, the circuit being completed through the inwardly projecting part of the jointpin, the lamp-cap and the frame of the machine. The primary circuits of the transformers are completed by relays which are energized from a low voltage supply through a commutator 38 on one of the gear wheels. Separate contacts 39 in the relay circuits are closed only if a lamp cap is in position to actuate a. plunger thereby preventing passage of the current through the heading tools when no work is in position. Provision may be made for water cooling the heading tools. Ejectors may be provided for lifting the finished caps from their holders, and air-blast then discharging them into a shoot. The heading tools have tungsten working faces, the abutments 15 being capped with molybdenum.
Patent GB-490171-A (GB)
Title: Method of producing a new raw material consisting of barium sulphate
IPC: C01F11/46
Filed: 1937-09-10
Abstract: Natural heavy spar is so finely ground, preferably in a wet state, that only about 2 per cent of the granules of the ground material is above 4 microns, whereby a product having properties similar to those of blanc fixe is obtained.  In a modification, the heavy spar is ground to the usual fineness, and the finest flour, corresponding in granular size to the product first obtained, extracted by means of a dust extractor.
Patent GB-911175-A (GB)
Title: A process for coating unsized fibrous cellulosic material
IPC: D21H19/18
Filed: 1960-07-15
Abstract: 911,175. Coated fabrics. SCAN-VAX FABRIKATIONS-, FORSKNINGS - OCH FORSALJNINGS A.B. July 15, 1960 [July 15, 1959; Nov. 23, 1959], No. 24820/60. Class 140. An unsized fibrous cellulose-containing material is coated with a thin surface layer of wax by applying to said material a cationic dispersion of a wax which is free from any salt of deacetylated chitin or deacetylated chondroitin. The dispersion may be an emulsion containing more than 0.5%, e.g. 5 to 50% by weight, of wax, and may be applied to the material in an amount not exceeding 4 grams of wax per square metre of surface area of the material. The dispersion may contain between 0.5 and 15% by weight of cationic emulsifier based on the weight of the wax. The material may take the form of a sheet or band of, for example, paper, fibre slab such as card or board, or a woven material such as cotton cloth. The wax is preferably paraffin or micro-wax. The pH of the emulsion preferably lies between 1 and 8, and the cationic properties of the emulsion originate from the use of a cation-active emulsifier. Suitable emulsifiers are quaternary ammonium compounds, e.g. benzalconium chloride, wherein the alkyl group contains 15 carbon atoms, and cetyl pyridinium chloride, and salts of primary amines having a hydrocarbon radical containing 10 to 40 carbon atoms. The emulsifier may also contain surface-active groups other than amine groups. Coated paper-board may be creased along lines intended to be folded when the carton is made up, and carton blanks punched out therefrom. Specifications 458,815 and 911,174 are referred to.
Patent GB-190528-A (GB)
Title: Improvements in apparatus for heating or cooling liquids, applicable in cheese-making and also in refrigerating and attemperating
IPC: A01J25/00
Filed: 1921-09-20
Abstract: 190,528. Turpin, E. B. Sept. 20, 1921. Cooling milk &c. indirectly within casings or chambers.-Apparatus for attemperating liquids, particularly milk in cheese-making processes, comprises a container 1, the sides and bottom of which are made of heat non-conducting material, divided by a partition 2, made of heat-conducting material, into upper and lower portions, the upper portion receiving the milk &c. and the lower one containing the heating or cooling fluid. Hot water may be fed into the chamber 5 through a hopper 4, or cold water may be fed in through a cock and discharged by a pipe 6. The milk &c. may be fed into the container slowly through perforations 12 in the bottom of a trough 10. The lower chamber 5 may be insulated as at 3.
Patent GB-956272-A (GB)
Title: Improvements in or relating to the preparation of steroid compounds
Inventor: EVANS RONALD MAJOR
IPC: A61K31/57
Filed: 1959-07-20
Abstract: The invention comprises 9,11-dichloropregnanes of the general formula: <FORM:0956272/C2/1> an acyl group and Ac is an acyl group) and their preparation by dichlorinating the corresponding D 9(11) compounds, preferably with molecular chlorine and using a solvent such as carbon tetrachloride, methylene dichloride, chloroform, or acetic acid.  Any HCl formed owing to side reactions can be removed, e.g. by means of water, solid alkali metal bicarbonate, or an alkali metal acetate buffer.  Other transformations, e.g. acetoxylation at C21, enol esterification at C20, epoxidation at D 17(20), oxidation at C3, and dechlorination at C9 and C11, may be carried out. In examples 3b -acetoxy -5a -pregna-9(11):16-dien -20- one is converted to its 16:17-pyrazoline derivative and thence to 3b -acetoxy -16- methyl -5a - pregna-9(11):16-dien -20- one, which is hydrogenated and the resulting 9(11)-pregnene then chlorinated to 3b -acetoxy-9a  11b -dichloro 16b -methyl -5a - pregnan-20-one and enol acetylated (in either order) to 3b ,20-diacetoxy-9a , 11b -dichloro-16b -methyl -5a -pregn-17(20)-ene, which is epoxidised and hydrolysed to 9a , 11b -dichloro-3b , 17a -dihydroxy-16b -methyl -5a - pregnan -20- one (I); subsequent bromination and treatment of the 21-bromo derivative with potassium acetate/acetone gives 21-acetoxy-9a , 11b -dichloro-3b , 17a - dihydroxy -16b - methyl -5a - pregnan -20- one (II), which is dechlorinated and oxidised (in either order) to 21-acetoxy-17a -hydroxy -16b - methyl -5a - pregn-9(11)-ene -3,20-dione.  3b , 20-Diacetoxy-9a , 11b -dichloro-17 (20)-epoxy -16b -methyl -5a - pregnane is converted with H2SO4 into the 17a -hydroxy -20- ketone, which is dechlorinated and hydrolysed to 3b ,17a -dihydroxy -16b - methyl -5a - pregn-9(11)- -en-20-one (III) (also prepared from I); bromination and acetoxylation gives 21-acetoxy -3b - 17a -dihydroxy -16b - methyl -5a - pregn-9(11)-en-20-one, which is chlorinated to give II; III is dichlorinated with Cl2 or with N-chlorosuccinimide in acetic acid containing lithium chloride to give I. Specifications 956,273 and U.S.A. 2,894,963 also are referred to.
Patent GB-1029396-A (GB)
Title: Improvements in or relating to the production of structures from castable building material
IPC: E02D15/06
Filed: 1963-06-24
Abstract: 1,029,396. Piles. NIBLER G.m.b.H. June 24, 1963 [Nov. 27, 1962], No. 24953/63. Addition to 935,797. Heading E1H. A method of producing a structure from a castable building material in an excavation having substantially stable walls and conforming generally with the contours of the desired structure as claimed in claim 1 of the parent Specification wherein a liquid impermeable bag which serves as an expendable sheathing for the structure and which contains a reinforcement comprising upright reinforcing members interconnected by spider-like cross-members is lowered into the excavation while embracing the reinforcement in a shape corresponding to that of said cross-members, is next inflated until it makes contact with the walls of the excavation and is then at least partly filled with the building material.
Patent GB-1109346-A (GB)
Title: Refrigerator driving arrangement
IPC: H02P1/44
Filed: 1966-06-06
Abstract: 1,109,346. 1 Ph. induction motors; control of A.C. motors. DANFOSS A.S. 6 June, 1966 [4 June, 1965], No. 25021/66. Headings H2A and H2J. In a refrigerator driving arrangement comprising a 1-ph. induction motor 1 having an auxiliary winding 3, a refrigerant compressor, and a starting device, e.g. a PTC resistor 8, the motor normal stalling torque D lies between the compressor highest normal running and extreme starting torques V 1  . . . V 4  and E whereas the motor stalling torque F with the auxiliary winding 3 energized is above the compressor extreme starting torque E, and the starting device 8 after starting of the motor maintains the auxiliary winding energization for a time sufficient for the compressor extreme starting torque E to fall to a running torque V 1  . . . V 4  lower than the motor normal stalling torque D. This enables a smaller motor to be used whilst still overcoming the extreme torque E which occurs during running-in and after prolonged stoppage.
Patent GB-685993-A (GB)
Title: Improvements relating to mining machines
IPC: E21C35/08
Filed: 1948-09-25
Abstract: 685,993. Planer mining-machines. MAVOR & COULSON, Ltd., and MAVOR, J. B. Feb. 23, 1950 [Sept. 25, 1948], No. 25083/48. Class 68(i) , In. a double or singleended wedge head planer for mining mineral, to facilitate the maintenance of the planer in a desired cutting plane, there is provided ahead of the machine, and in a plane parallel to the cutting plane, a light source 32, whilst on the machine in the same plane as the light source 32 but inclined to said plane is a mirror 27, a vertical strip 28 of which is covered. Either on or immediately ahead of the machine is a rod index 26. As long as the image of the rod and the light 32 coincide with the strip 28, the machine is moving in the right plane. For a doubleended machine an index is provided at either end and the mirror can be rotated through 90 degrees. The Provisional Specification describes also a double-faced fixed mirror.
Patent GB-631733-A (GB)
Title: Improvements in or relating to liquid-cooled optical apparatus
IPC: G03B21/16
Filed: 1946-08-22
Abstract: 631,733. Discharge apparatus. PHILIPS LAMPS, Ltd. Aug. 22, 1946, No. 25085. Convention date, March 4, 1943. [Class 39 (i)] In optical apparatus containing a metal reflector which is mounted in a cooling liquid on a part made of another metal, the reflector is insulated from this part to prevent electrolytic action. In the Figure, a liquid-cooled highpressure mercury vapour lamp 4 has a metal container 1 which supports a mirror 2 by means of the insulator 5 and the insulating screws 6. The insulation 5 may be of celluloid.
Patent GB-886042-A (GB)
Title: Sound-deadening covering
Inventor: DREW JAMES ERNEST PEARSON
IPC: D04H13/00
Filed: 1959-07-22
Abstract: 886,042. Felt laminates. McRAE & DREW Ltd. July 22, 1960 [July 22, 1959], No. 25117/59. Classes 42 (2) and 140. A sound-deadening covering comprises at least one ply of fibrous material needled to a ply of elastically deformable cellular material. The fibrous material may be of jute or synthetic fibres and the cellular material may be polyurethane, foam rubber or foam plastic. The needling may take place in an overhead eccentric needle punching machine having barbed. felting needles. Preferably fibrous material is needled to both sides of the elastically deformable cellular ply.
Patent GB-690607-A (GB)
Title: A method of freeing industrial waste waters from phenols
IPC: C02F1/04
Filed: 1951-10-29
Abstract: <PICT:0690607/IV (b)/1> Phenols are extracted from industrial waste waters with low boiling-point solvents, e.g. butyl acetate, in two cycles, the bulk of phenol being removed, e.g. down to 50-100 milligrams/litre, from the water in the first cycle in which the solvent is used in small quantity, e.g. 10-20 per cent of volume of water under treatment and recovered by distillation and the residual quantities of phenol being removed e.g. down to 1 milligram/litre or less from the water in the second cycle in which the solvent used in large quantities, e.g. 100-300 per cent by volume is recovered by extraction with a stoichiometrical excess of lye.  The cycles are so combined that the solvent in the first cycle is derived from the charged solvent from the second cycle and the solvent recovered from the first cycle by distillation is fed to the second cycle.  The diagram illustrates a plant in which the first cycle A consists of four stages 2, 3, 4, 5 and the second cycle B consists of two stages 6, 7 each of the stages being constructed in known manner so that the water from the input 1 of the plant flows in counter-current to the solvent and is freed from the solvent at the end of each stage, leaving the plant at 8.  The charged solvent from the first cycle which passes through the stages in succession is separated from the phenols in a distillation plant 9, the phenols leaving the plant at 18 while the solvent is fed at 13 into the solvent circuit of the second cycle B.  After each of the stages 6, 7 the solvent is treated with a stoichiometrical excess of lye in co-current in stages 11, 12 for example, in washing towers packed with Raschig rings so as to ensure that the solvent is mechanically free from phenolate lye.  The lye required for stages 11 and 12 is introduced at 16 and recycled several times through the stages 11, 12 and a small quantity which contains relatively small amounts of phenol is removed at 17.  The solvent for the first cycle is taken from the stage 6 before treatment with lye in the stage 11.  Alternatively, the solvent output from the distiller 9 may be fed back to the stage 5.
Patent GB-216770-A (GB)
Title: Improvements in methods of and apparatus for making endless tire bands and the like
IPC: B29D30/38
Filed: 1923-10-10
Abstract: 216,770. White, A. E., (Goodrich Co., B. F.). Oct. 10, 1923. Tyre covers, special apparatus for making.- A tubular structure, from which bands are cut for use in building- up tyre castings, is formed by helically winding two cord &c. fabric strips 28 around a mandrel 13 on to which a paper &c. strip 14 is fed through a folder 17 to form a non-adhesive liner between the fabric plies when the tube' is flattened. The fabric supply rolls 28 and takeup rolls 31 for the liner strips are journaled at the required angle on turntables 18 which surround the mandrel 13 and are driven in opposite directions from the same shaft as the rolls 34 for drawing the work from the mandrel.
Patent GB-915121-A (GB)
Title: Improvements in or relating to inverse feedback amplifiers
IPC: H03G5/08
Filed: 1959-07-23
Abstract: 915,121. Valve and transistor amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 23, 1959 [July 26, 1958], No. 25322/59. Class 40 (6). A negative feedback amplifier includes capacitance-resistance networks 15, 4, 5 and 17, 6, 7 in the forward and feed-back paths arranged to give sufficient positive feedback near as required cut-off frequency to produce a Q of approximately unity, and a cut-off characteristic of substantially 12 db/octave beyond cut-off, curve a, Fig. 2. As shown, in Fig. 1, a high-pass amplifier comprises two triodes 1, 2 or transistors, and includes a further capacitance resistance network 9, 10 in the output to give an additional cut-off of 6 db/octave, curve b, Fig. 2, so that the overall response, curve c, Fig. 2, has a cut-off characteristic of 18 db/ octave. Expressions for determining Q and the cut-off frequency are given. The resistors and capacitors may be interchanged to give a low-pass characteristic.
Patent GB-1138310-A (GB)
Title: Radioisotope generator
IPC: C01B31/30
Filed: 1966-06-07
Abstract: 1,138,310. Utilizing energy of radiations. NORTH AMERICAN AVIATION Inc. 7 June, 1966 [17 June, 1965], No. 25391/66. Heading G6P. In a radio-active power generator, heat, which is produced in an alpha-particle emitter, is transformed to electrical energy by thermoelectric or thermionic elements surrounding the emitter. In one embodiment, the alpha emitter is plutonium oxide, Pu<SP>238</SP>O 2 <SP>16</SP>. The oxygen comprises the 0-16 isotope with only trace amounts of 0-17, 0-18. The alpha-neutron reaction with the 0-16 is less than that with 0-17 and 0-18, hence a smaller number of secondary neutrons is generated, than would be the case with 0-17, 0-18, and a reduced weight of shielding is necessary. The threshold energy of the alpha-neutron reaction of 0-16 is greater than the maximum energy of the emitted alpha particles. In a further embodiment, Po<SP>210</SP>O<SP>16</SP>, is employed where the half life of 138 days is required.