baber/WOPTO huggingface dataset:
Patent GB-1207363-A (GB)
Title: Brushless motor arrangement
Inventor: INAGAKI JUNPEI
IPC: H02P6/14
Filed: 1967-09-28
Abstract: 1,207,363. Electric motors. TOKYO SHIBAURA ELECTRIC CO. Ltd. 28 Sept., 1967 [28 Sept., 1966; 1 Feb., 1967; 6 April, 1967; 10 April, 1967; 18 April, 1967; 23 May, 1967], No. 44137/67. Heading H2A. A brushless motor arrangement comprises a motor 32 having a plurality of stator windings connected in star formation, capacitors Cuv, Cwu, Cvw connected across the free ends of the windings, an inverter comprising SCRs S1-S6 connected to a D.C. source through an inductor 45, and a short-circuiting arrangement 33 which short circuits the inverter input during com. mutation of the thyristors in the inverter. An SCR S15 in the short-circuiting arrangement 33, together with the SCRs S1-S6, is controlled by a gate control circuit 44 which is itself controlled by a rotor position sensor 43. At commutation, S15 is turned on and the conducting SCRs in the inverter, e.g. S1 and S5 are forcibly turned off by being reverse biased by an auxiliary source 40 and the voltage on capacitor Cuv. S15 is turned off during the first negative half cycle of current of the oscillatory circuit 35, 36 and SCRs S1 and S6 are then turned on. The rotor 42 may either be a permanent magnet or, alternatively, it may carry an energizing winding. In a modification, Fig. 4 (not shown), a second auxiliary source (48) is connected across the SCR S15 to permit turning this SCR off during regenerative braking. In a further modification, Fig. 5 (not shown), a further SCR 65 is connected across the inductor 35 of the resonant circuit and is turned on by a delay circuit (70) after S15 is turned off, thus short-circuiting inductor 35 and allowing capacitor 36 to re-charge. In yet another modification, Fig. 7 (not shown), the short-circuit path includes the resonant circuit (82, 86) and an SCR (85), the capacitor (86) being recharged after commutation by an auxiliary source (92) acting through a further SCR, (87), which is turned on after the first SCR (85) is turned off. In a final modification. Fig. 9 (not shown), a transistor (101) in the short-circuiting arrangement is turned on at the times of commutation, its period of conduction being controlled by a monostable multivibrator (100).
Patent GB-1391450-A (GB)
Title: Rubber springs
IPC: F16F1/40
Filed: 1971-09-22
Abstract: 1391450 Axle bearing guiding arrangements DUNLOP Ltd 8 Sept 1972 [22 Sept 1971] 44144/71 Heading B7L [Also in Division F2] In a spring comprising two plates (Fig. 1 shows four such plates 11-14) of V-shaped cross-section and an elastomeric element 15 (three shown) bonded between them, the area bounded by the outline of the element is less than the product of the length and the breadth of each bonded face. The outline of the element 15 and therefore of a face may for example be a rectangle with its corners removed, Fig. 3, giving four portions 16 oblique to mutually perpendicular sides 17, 18. The four portions may each be of two angled obliques or the outline may be a rhombus, a circle, or an ellipse (possibly truncated at both ends, Fig. 7). The outline need not be symmetrical. There may be more than two V plates having interleaved and bonded elastomeric elements, all or only one of the elastomeric elements being of the specified shape. The plates 11-14 need not be rectangular as shown; they may conform to the shape of the element. Two sets of four-plate springs may be used to connect a railway vehicle body with an axle box, Fig. 8 (not shown).
Patent GB-987244-A (GB)
Title: Improvements in or relating to electric lighting fittings
Inventor: STERN BERNARD
IPC: F21V17/16
Filed: 1960-12-23
Abstract: 987,244. Catch fastenings. ROTAFLEX (GREAT BRITAIN) Ltd. Dec. 27, 1961 [Dec. 23, 1960], No. 44206/60. Heading E2A. [Also in Division F4] An electric lighting fitting comprises two elements normally closed together to enclose one or more lamps being held closed by a clip attached to one of the elements and having a limb engaging the other element, the limb and the other element being slidable relative to one another upon movement of the elements to an open position, a stop on the limb then engaging the element, the limb having at least one wave or hump to engage the element and resist relative movement of the two elements past an intermediate position. In one form, the fitting consists of a diffusing bowl 10, Fig. 1, having a circular opening 11 closed by an element 12 having a flange 13. Clips 14 of hair-pin form with an intermediate coiled portion 15 are arranged at diametrically opposite points on the flange 13 and pass through slots 17 in a metal ring surrounding the opening 11. The ends of the clips are formed as loops 19 which engage the extremities of the slots 17 when the element 12 is moved downwards. Each limb has also a hump 20 which retains the element 12 in closed position. In a modification, the diffuser bowl 25, Fig. 4, is supported on a ceiling plate 26 by means of clips 27 of hair-pin form having coiled portions 28 secured to the plate 26 and looped ends 34. The bowl 25 has a post 31 projecting up from a boss 32 at the centre and formed with anelongated loop 30 through which the limbs of the clips pass. Each limb has a hump 33 which engages the loop 30 to hold the bowl in raised position and a second hump 35 by which the bowl may be retained in an intermediate position, the loops 34 serving to retain the bowl in the lowermost position.
Patent GB-1362941-A (GB)
Title: Photographic printing apparatus and method of photographic printing
IPC: G03B27/72
Filed: 1971-09-23
Abstract: 1362941 Photographic printing apparatus AGFA-GEVAERT A G 23 Sept 1971 [23 Sept 1970] 44431/71 Heading G2A Photographic printing apparatus has a main exposing light 1 Fig. 1 for projecting an image of an original 4 on to photographic printing material 6 a further light 10 for uniformly exposing the print material to alter its gradation, the operation of the two lights overlapping in time, and means for controlling the image exposure including a photo-electric device 8 which is arranged to only receive light from the main exposing light 1. In one embodiment, a yellow filter 9 is positioned in front of the photo-cell, and a blue filter placed in front of the further light source. The photo-cell receives light from main exposing light via a semi-reflecting mirror 7. Alternatively, the photo-cell and its filter is positioned beneath the printing material, Fig. 2 (not shown), or the photo-cell may be positoned in the plane of the objective 5 to receive light scattered from the original, in which case no filters are necessary, Fig.3 (not shown). The apparatus is controlled by the circuit shown in Fig. 4. One input to a comparison amplifier 17 is connected to the common point of the photo-cell 8 and a timing capacitor 15. The other input is connected to a voltage divider in which adjustable resistor 21 is coupled to on adjustable resistor 22 in the further light source circuit, adjustable resistor 19 sets the apparatus to the basic hardness of the printing material, and adjustable resistor 26 corrects for deviations from the reciprocity law.
Patent GB-1276684-A (GB)
Title: Production of impact-resistant resins
IPC: C08F279/02
Filed: 1969-09-11
Abstract: 1276684 Graft polymerization process MITSUBISHI PETROCHEMICAL CO Ltd 11 Sept 1969 [13 Sept 1968] 44834/69 Heading C3G An impact-resistant resin is produced by causing a monomer, comprising an alkenyl aromatic compound or a mixture thereof with a copolymerizable alkenyl compound, containing a rubbery polymer dissolved therein to undergo mass polymerization, and after phase inversion, subjecting the resulting partially polymerized mass to suspension polymerization, the graft rate of said monomer with respect to said rubbery polymer at the time of phase inversion being maintained at below 30%, the mass polymerization being continued until the conversion reaches 15 to 40% thereby causing particles of the rubbery polymer to disperse substantially uniformly with a particle size of 1 to 10 microns throughout said mass and the mass then being subjected to suspension polymerization. The graft rate at the time of phase inversion is preferably controlled by using an aliphatic diacyl peroxide as initiator in the mass polymerization. In examples, styrene is grafted on to polybutadiene or styrene-butadiene rubber.
Patent GB-1512398-A (GB)
Title: Solution polymerisation or copolymerisation of acrylonitrile
IPC: C08F4/00
Filed: 1975-10-30
Abstract: 1512398 Polymerization of acrylonitrile BAYER AG 30 Oct 1975 [22 Feb 1975] 44907/75 Heading C3P A spinnable solution is produced by polymerizing acrylonitrile alone or with at least one other ethylenically unsaturated monomer in an organic solvent in the presence of an acid, a 1,3 diketone and a peroxodisulphate. A monomer which when incorporated in the polymer improves its dyeability may be present, e.g. methalkyl, allyl- or styrene sulphonic acid or a salt thereof. In the examples acrylonitrile is copolymerized with methyl acrylate in dimethyl formamide or sulphoxide in the presence of acetyl acetone, ammonium peroxodisulphate and one of sulphuric, nitric, hydrochlroric, oxalic, o-phosphoric and p-toluene sulphonic acid and in some cases the sodium salt of methallyl sulphonic. Filaments are produced from the solutions formed.
Patent GB-1099669-A (GB)
Title: Gas liquefaction process
Inventor: SMITH DONALD L
IPC: F25J1/02
Filed: 1966-10-07
Abstract: 1,099,669. Gas liquefaction process. AIR REDUCTION CO. Oct. 7, 1966 [Oct. 8, 1965], No. 44923/66. Heading F4P. Liquefaction of a gas, e.g. effluent nitrogen from the low pressure column (103), Fig. 6 (not shown), of a two stage air rectification plant is effected by compression to not more than 2À5 times the critical pressure of the gas at 151, 153, 155, 157, 159, 163, 166 cooling in means including paths a, a<SP>1</SP> of a first heat exchanger 169, dividing the cooled gas at 186 into a minor portion which is cooled without liquefaction in path a of a second exchanger 192 and into a major portion which is work-expanded in turbines 188, 194, with intervening warming in a path a of exchanger 192 from which latter the cooled minor portion is passed through a line 203 and is throttle-expanded at 204, 209, 213 into a product liquid storage vessel 213; uncondensed vapour from the latter being forced by a pump 217 through paths c of exchangers 192, 169 and a line 221 to the compressor inlets where it is joined by the work expanded major portion. The compressed feed gas is withdrawn from path a of exchanger 169 cooled by external refrigeration means 175 and is then returned to path a of exchanger 169. Throttle valve 204 discharges into a separater 206 which also condenses oxygen. Vapour above liquid oxygen storage vessel 112 and a portion of condensed nitrogen is passed along a line 122 to provide additional reflux for the column (103).
Patent GB-1191106-A (GB)
Title: Improvements in or relating to Methods and Apparatus for Exposing Photosensitive Material
IPC: H01L23/29
Filed: 1967-10-04
Abstract: 1,191,106. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORP. 4 Oct., 1967 [16 Nov., 1966], No. 45182/67. Heading H1K. [Also in Division G2] A monolithic integrated circuit semi-conductor wafer W is tested (Fig. 1, not shown), by a known system to determine the acceptable network components thereof, and the data so obtained is used to control apparatus for exposing a photo-resist coating on the wafer W so as to form thereon a wiring interconnection pattern linking only the acceptable components. The data is fed to a computer 17 which determines the wiring interconnection pattern to be formed and generates instructions to this effect. These cause a glass plate 21 to be pivoted about by servomotors 19, 20, each controlling rotation about one of a pair of orthogonal axes. Movement of the plate 21 varies the point of impingement of a narrow light beam 22 on the wafer W, since the beam is refracted and hence displaced by differing amounts as the plate moves. The wafer is attached to a support which can be moved when no more of the circuit can be formed by tilting the plate 21. A third servomotor 90 controls a shutter 89 which is closed while the wafer position is adjusted. A modified light source (Fig. 12, not shown) emitting a plurality of collimated light beams for tracing simultaneously a plurality of identical latent images may be used instead of the source 23 which emits the single beam 22. Instead of utilizing the apparatus to expose the wafer directly, it may be used to expose a photographic film from which a mask, later used to expose the wafer, may be made. The wafer W is coated with a metallic layer and with a photo-resist coating, which coating is exposed as described above to form a latent image. The photo-resist coating is then developed, the unexposed portions being removed, and an etchant then applied to remove those portions of the metallic layer not protected by the developed image. Finally, the developed image is removed to leave the wiring interconnection pattern on the wafer.
Patent GB-1367548-A (GB)
Title: Waste disposal process for spent wood pulping liquors
IPC: D21C11/00
Filed: 1972-09-30
Abstract: 1367548 Treating spent wood pulping liquors TEXACO DEVELOPMENT CORP 30 Sept 1972 45249/72 Heading D2W A process for treating spent wood pulping liquors comprises heating waste liquors from digester 16 and wash water from pulp washing unit 10 in coker 22 at 450-700F and 1000-3000 psig for 0.5 min.-6 hours to form a carbonaceous residue, termed "coke", and a purified effluent containing dissolved solids, separating the coke from the effluent in hold drum 26, dewatering the coke in blow down unit 30, combining the effluent from hold drum with that obained by dewatering the coke, depressurising the resulting stream through throttling valve 38 into separator 40, and separating steam from liquid therein. The steam and liquid may be reused in the pulping process. The coke may be burnt to produce ash and steam, and pulping chemicals may be recovered from the ash.
Patent GB-1087488-A (GB)
Title: Improvements in and relating to the oxidation of phenols
IPC: C08G65/44
Filed: 1965-10-27
Abstract: In a method for the oxidative polymerization of phenols a solution of the phenol and an oxidation catalyst are introduced into a vertical column and a stream of oxygen-containing gas is passed through the column at a velocity of at least 0.15 metres per second per unit crosssectional area of the column.  The reaction may be carried out continuously by feeding the solution of phenol and catalyst to the bottom of the column and removing product solution from the top of the column.  A series of reactors may be used, product from the top of one column being fed to the bottom of the next. In examples polymers are obtained by oxidizing with air 2,6-dimethyl-phenol, orthocresol and mixtures of 2,6-dimethylphenol with orthocresol, phenol and ortho-methoxy phenol, the solvent being toluene and the catalyst cuprous chloride and dimethyl-laurylamine.
Patent GB-1450203-A (GB)
Title: Nuclear reactor containments
IPC: G21C13/00
Filed: 1973-09-28
Abstract: 1450203 Nuclear reactor containments UNITED KINGDOM ATOMIC ENERGY AUTHORITY 15 Aug 1974 [28 Sept 1973] 45543/73 Heading G6C A. containment structure for a fast, sodiumcooled reactor comprises a primary vessel 3 whose rim is attached to a roof structure and the upper peripheral region 9 of which is arranged to be cooled such that the cooling effect increases progressively upwards to a maximum at the attachment of the vessel to the roof structure. The means for producing such cooling comprises an annular tank 11 intended to contain sodium and potassium and containing cooling coils 12 through which a diphenyl/diphenyl oxide eutectic can be circulated at a variable rate. Below the tank 11 is a wrapping of mineral insulation 13 whose thickness decreases progressively upwards to a minimum adjacent tank 11. A jacket 14 surrounding the wrapping is arranged to have nitrogen passed therethrough at a variable rate. The primary vessel 3 is housed within a prestressed concrete structure 1 lined internally with mineral insulation 32 and steel, the lower region of this structure being cooled by nitrogen which is passed through vertical channels 36 arranged in chevron pattern about the hemispherical base of the cavity 2 afforded by the structure 1. Inlet and outlet manifolds 37, 38 for the channels 36 are disposed above the normal surface level 8 of sodium in the primary vessel 3 so that continued cooling of the structure is provided in post-accident conditions. The roof structure comprises a layer 34 of high-thermal conductivity concrete and ducts 35 through which a variable flow of diphenyl/ diphenyl oxide eutectic can be passed.
Patent GB-1011174-A (GB)
Title: Manufacture of fine grain castings
Inventor: CULBERTSON RUSSEL PHILLIP
IPC: B22C3/00
Filed: 1963-11-19
Abstract: 1,011,174. Casting processes. UNION CARBIDE CORPORATION. Nov. 19, 1963, No. 45554/63. Heading B3F. A mould has on its casting surface cobalt aluminate as a nucleation catalyst. The cobalt aluminate may be included in the mould mix, applied to the surface of the pattern, or sprayed on to the mould surface, e.g. in an aqueous wash with bentonite.
Patent GB-1156210-A (GB)
Title: Potentially Crimped Filament Yarn
Inventor: PEACE ROBERT STEPHENSON
IPC: D02G1/00
Filed: 1965-10-28
Abstract: 1,156,210. Intermittently crimped filaments. IMPERIAL CHEMICAL INDUSTRIES Ltd. 10 Oct., 1966 [28 Oct., 1965], No. 45684/65. Heading B5B. [Also in Division D1] A yarn is intermittently textured by passing synthetic linear polymer filaments at a speed between 100 and 1000 metres per minute at an angle of deflection of less than 45 degrees over a narrow tungsten strip which is heated to a temperature between 170‹ C. and 400‹ C. and preferably above the melting temperature of the filaments in such a way that the filaments are heated in contact with the strip at one side only, such contact being provided by applying a small tension which together with the change of direction of the filaments is sufficient only to maintain good contact with the strip, and interrupting the said contact intermittently by moving the yarn or the strip out of mutual contact. The filaments may be moved away from the strip by a ceramic peg, regularly or randomly activated by an electromagnetic device controlled by a rotating drum with raised contacts. The filaments may be passed to the tungsten strip from a drawing apparatus over a ribbon forming guide. The filaments in the non-textured regions are essentially parallel and uncrimped, and the individual filaments in the textured regions have a range of crimp amplitudes and frequencies along their lengths, the crimp being substantially out of phase from one filament to another, and the range of crimp amplitudes and frequencies is such that, over intermittent lengths, a proportion of the individual filaments in the textured regions of the yarn are substantially uncrimped. The crimp may be developed in the yarn by relaxing the yarn in hot air. The yarn may be knitted or woven. The treatment of polyethylene terephthalate filaments is exemplified.
Patent GB-1111521-A (GB)
Title: Electrical resistance furnaces
Inventor: YOUNG STUART GERALD
IPC: H05B3/66
Filed: 1964-11-10
Abstract: 1,111,521. Electric resistance furnaces. HEATLOCK Ltd. 21 Jan., 1966 [10 Nov., 19641, No. 45740/64. Heading H5H. An electric resistance furnace having means for extracting molten metal under the influence of pressure or vacuum comprises a sealed enclosure 9 containing a crucible 3 preferably of SiC surrounded by a tubular shield 1, electric heating elements 13 outside the shield and a refractory casing 5 around and beneath the shield and elements. Insulated supports 12 on the shield or the casing 5 carry the elements 13 to which terminals 18 are connected; a thermocouple 17 monitors the temperature near the shield. Molten metal is extracted through an opening 11. In the event of a crucible failure molten metal can discharge through a tube 16 closed by a fusible diaphragm 15.
Patent GB-1366377-A (GB)
Title: Supply monitoring apparatus
IPC: H02H3/24
Filed: 1971-10-01
Abstract: 1366377 Voltage monitoring INTERNATIONAL COMPUTERS Ltd 2 Oct 1972 [1 Oct 1971] 45772/71 Heading G1U Successive half-cycles of a full-wave rectified 11, Fig. 1, A.C. supply voltage 10 are compared with a pre-set lower threshold level 12, which, providing the supply potential is above the threshold level, therefore produces a series of output pulses, one for each half-cycle of the A. C. supply, each of which, after detection 13, discharges 14, i.e. resets, a ramp generator 15 so that its output does not rise high enough to set an amplitude responsive switch 16. The switch 16 has a plurality of outputs 18 which are sequentially energized as the input potential to the switch rises so that if one half-cycle is substandard the first lead 18 is energized, if two consecutive half-cycles are sub-standard the second lead 18 is energized, and if three consecutive half-cycles are sub-standard the third lead 18 is energized. Whenever a sub-standard half-cycle or group of half-cycles is detected, an appropriate print-out 20, with the time at which the sub-standard cycles occurred, is made. The single threshold level comparator 12 can be replaced by two or more comparators each set at a different level, so that, for example a record can be made of half-cycles that are 10%, 50% and 90% below their nominal amplitude.
Patent GB-1207589-A (GB)
Title: Metal phosphate-containing catalysts and preparation and use thereof
Inventor: JAFFE JOSEPH
IPC: B01J27/188
Filed: 1968-09-30
Abstract: 1,207,589. Hydrocarbon conversion catalysts. CHEVRON RESEARCH CO. 30 Sept., 1968 [2 Oct., 1967], No. 46412/68. Heading B1E. [Also in Divisions C4 and C5] A catalyst composite comprises discrete "insoluble" Group IV metal phosphate particles surrounded by a continuous phase matrix comprising at least one solid oxide and at least one hydrogenating component selected from Group VI metals and oxides and sulphides thereof and Group VIII metals and oxides and sulphides thereof. Specified Group IV metals are Zr, Ti, Sn, Th, or Hf. The solid oxide is usually SiO 2 , Al 2 O 3  or SiO 2 -Al 2 O 3  Mo and W from Group VI and Ni from Group VIII are mentioned in examples. Insoluble is defined as insoluble in water or in any liquid medium having a pH below 7. Additionally the catalyst may contain a minor proportion of fluorine.