baber/WOPTO huggingface dataset:
Patent GB-862221-A (GB)
Title: Process for the preparation of moderator graphite for use in nuclear reactors
IPC: C01B31/00
Filed: 1959-08-31
Abstract: In the production of a graphite article from a shaped mixture of coke and a carbonizable binder by successive baking and graphitizing steps optionally followed by one or more densifying treatments each comprising further successive baking and graphitizing steps after impregnation of the graphite with a carbonizable binder, the binder and/or the densifier, where used, is a petroleum fraction, preferably a petroleum distillate, which has been treated with oxygen, e.g. in the form of air, at a temperature of 150-400 DEG  C.  The treated fraction should have a ring and ball softening point of at least 80 DEG  C. for use as a binder and of at least 70 DEG  C. for use as a densifier.  A cracked petroleum distillate is preferably employed.  A petroleum distillate may be treated at a temperature of 200-250 DEG C. under atmospheric pressure, or 150-200 DEG  C. under a pressure of 2-5 kg./sq. cm.  After the oxygen-treatment any volatile components boiling below 200 DEG  C. or 300 DEG  C. may be removed by distillation. Distillation may be continued until the residue has a softening point of at least 80 DEG  or 90 DEG  C. and a specific gravity of at least 1.1.  Examples are given.
Patent GB-911616-A (GB)
Title: Tooth locking means
Inventor: HILL ROY R
IPC: E02F9/28
Filed: 1961-08-17
Abstract: 911,616. Digger teeth for earth excavators. ORENDORFF MANUFACTURING CO. Aug. 17, 1961, No. 29662/61. Class 68 (1). [Also in Group I] Means for detachably securing an earthdigging tool 11 to a shank 12 wherein the tooth has a housing 18 which fits over the end 21 of the shank, is characterized in that a recess 26 is provided for a nut 27 which engages a bolt 29 which extends through a hole 28 in the tool 11. The tool 11 may be provided with a counter-sunk hole so that thehead of the bolt may he flush with the outside of the tool.
Patent GB-442791-A (GB)
Title: Improvements in or relating to golf clubs
IPC: A63B53/14
Filed: 1934-10-17
Abstract: 442,791. Golf clubs. PARDOE, A., 238, Bay Street, Toronto, Canada. Oct. 17, 1934, No. 29703. Convention date, Oct. 30, 1933. [Class 132 (ii)] The surface of a golf-club hand-grip encompassed by the upper gripping hand converges inwardly towards the axis of the club shaft towards its upper end. In the construction shown in Figs. 2, 3 and 4, the flattened surface A is formed by skiving, the surface A being disposed at an angle of substantially 46‹, or any other convenient angle, to the line c-c from the shaft to the toe of the club. The surface A is preferably slightly rounded to fit the palm of the hand. In the construction shown in Fig. 5, the end of the shaft is bent laterally, the surface A<1> being flattened in a manner similar to the face A.
Patent GB-504752-A (GB)
Title: Improvements in or relating to antenna systems
IPC: H04B1/12
Filed: 1937-11-01
Abstract: 504,752. Wireless receiving systems; impedance networks. MARCONI'S WIRE. LESS TELEGRAPH CO., Ltd. Nov. 1, 1937, No. 29820. Convention date, Oct. 31, 1936. [Classes 40 (iii) and 40 (v)] A potentiometer 41 is connected across a transmission line 21 coupling an aerial 1 and receiver 67, its variable tapping 43 being earthed in order that interference from the aerial and that remaining in the line may be removed by unbalancing the line. The capacity unbalance may be adjusted by a variable. condenser 45 connected between one of the line conductors and earth. The network coupling the aerial 1 and line 21 comprises short and long wave transformers 3, 23 respectively. Transformer 3 comprises a primary winding 5 connected to the aerial 1 through condenser 7 and coupled to the balanced secondary windings 11, 13 connected through condenser 15. The balanced secondaries 27, 29 of transformer 23 are connected through condenser 31 and bridged across the condenser 15 of transformer 3, while the primary winding 25 is connected directly to the aerial 1. The network coupling the line 21 to the receiver 67 is similar, as shown. A similar network for coupling a dipole aerial to the line has balanced primary windings, Fig. 2 (not shown). Specification 468,801 is referred to.
Patent GB-748846-A (GB)
Title: A process for the manufacture of pregnan-3(-a)-ol-20-one and derivatives thereof
Inventor: GREEN JOSEPH
IPC: C07J75/00
Filed: 1953-10-28
Abstract: Pregnan-3a -ol-20-one and esters thereof are prepared by ozonolysis of a compound of the formula <FORM:0748846/IV(a)/1> where R is hydrogen or an acyl group, and R1 is an acyl group.  In an example: 3a -acetoxybisnorcholan-22-al, acetic anhydride and fused sodium acetate are refluxed under nitrogen to produce the corresponding enol acetate, which is isolated by extraction with ether.  The enol acetate is ozonized in chloroform solution, the product treated with zinc dust and acetic acid, and 3a  - acetoxy - pregnan - 20 - one isolated with ether and purified by chromatography on alumina. Specification 745,584 is referred to.
Patent GB-652256-A (GB)
Title: Improvements in or relating to vaporizers for internal combustion engines
IPC: F02M1/00
Filed: 1947-11-10
Abstract: 652,256. Vaporizers; auxiliary air admission. POTTER F. J:. SHEARING. A. C., (trading as BROWNE & SON ENGINEERS), BROWN. A. and SWALES, J. Nov. 10, 1947, No. 29886. [Classes 7(ii) and 7(iii)] Exhaust gases flowing through a vaporizer A comprising a casing attached to the exhaust manifold D and forming the sole connection between the exhaust manifold D and the exhaust pipe F, heat the combustible mixture from a carburetter H flowing through a pipe G in the vaporizer leading to the intake manifold J, and a valve is positioned between the vaporizer A and the exhaust pipe F to control the exhaust flow through the vaporizer. Extra air may be added to the mixture in the intake pipe through a pipe L under the cotnrol of a piston valve R actuated by engine suction. The extra air may also be controlled by a throttle valve arranged to open when .the. main throttle valve has been partially opened.
Patent GB-778751-A (GB)
Title: Process of purifying caprolactam
Filed: 1955-10-19
Abstract: Caprolactam is purified by passing hydrogen through an aqueous solution of the caprolactam at a temperature below the boiling point thereof in the presence of a hydrogenation catalyst, and recovering the caprolactam from the reaction liquid.  It is preferred to employ lactam concentrations of 15-30 per cent by weight and to subject the solution to a preliminary purification with anion or cation exchangers as described in Specification 762,879.  Higher concentrations of 40, 60 or 90 per cent by weight may also be used. The preferred hydrogenation temperature is 85-100 DEG  C., but temperatures of 15-25 DEG  C. or 30-50 DEG  C. may be employed.  The hydrogen pressure may be maintained at 1-2 atmospheres gauge. Suitable catalysts are iron, nickel, palladium, platinum and copper, or metal oxides, e.g. molybdenum oxide, copper oxide, vanadium oxide, or mixtures of metals and/or metal oxides.  The catalysts may be deposited on carriers such as kieselguhr, diatomaceous earth, silica gel or alumina.  Foraminate catalysts prepared by removal of aluminium or silicon from their alloys with nickel, cobalt, iron or copper are also suitable.  The catalyst may be suspended in the lactam solution or may be employed in a fixed bed through which the lactam solution and hydrogen are passed.  The purified caprolactam may be recovered by distillation, or the reaction liquid may be passed over anion or cation exchangers, or both anion and cation exchangers simultaneously or in succession, to remove the hydrogenated impurities whereafter the lactam solution may be evaporated to remove the water.  In an example, an impure aqueous caprolactam solution is passed successively through columns of adsorbent carbon, cation exchanger and anion exchanger, and then is passed downwardly through three vertical reaction vessels filled with palladium-on-alumina catalyst, in countercurrent relation to the flow of hydrogen, and then is passed successively through a column of cation exchanger and a column of anion exchanger and subsequently evaporated to dryness.
Patent GB-436040-A (GB)
Title: Improvements in and relating to operating mechanism for electric circuit breakers
IPC: H01H3/22
Filed: 1934-10-19
Abstract: 436,040. Brakes. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London. Oct. 19, 1934, No. 29983. Convention date, Oct. 19, 1933. [Class 103 (i)] [See also Group XXXVII] The driving shaft 17 of an electric motor 3 is connected to a shaft 29, for operating circuitbreaker closing mechanism, through a brake member 22 which is biassed by a spring 23 to the braking position, Fig. 2, when the motor torque falls below a predetermined value upon completion of the circuit closing operation, the motor, during the transmission of its normal torque for closing the circuit, overcoming the tension of the spring and effecting movement of the brake member to the non-braking position shown in Fig. 3. The driving shaft 17 has a pin 26 engaging an inclined slot 27 in the brake member for effecting the desired movements of the latter, and the driven shaft 29 has a squared end 291 engaging a corresponding aperture in the brake member. The circuit of the motor is closed by pressing a button 72 and held closed by a cam 78 on the operating shaft 18 driven from the shaft 29 until the completion of the operation of closing the circuit-breaker, whereupon the circuit of the motor is opened and the motor is brought to rest by the brake member 22.
Patent GB-651503-A (GB)
Title: Improvements relating to tubular constructions
IPC: E04F11/18
Filed: 1948-11-18
Abstract: 651,503. Tabs joints. WELLINGTON TUBE WORKS, Ltd., and ROWAN, H. C. Nov. 18, 1948, Nos. 29992/48 and 13362/49. [Class 99(i)] [Also in Group I] Seating pieces f engage tubes a, b which are provided at their junction with studs i, i<SP>1</SP> engaging nuts e fixedly secured in one or each tube. The studs may pass laterally through the vertical tubes a or a head member c secured thereon, Fig. 2. In modifications (a) the polygonal mid-section i<SP>2</SP> of stud i slides axially in the collar k of a coupling member j the rotation of which allows the stud to engage the nuts e, Fig. 3, and (b) a seating piece is interposed between co-axial tubes which are rotated relative to one another to engage the stud and nuts, Fig. 4 (not shown).
Patent GB-409660-A (GB)
Title: Improvements in electric filter circuits
IPC: H03H7/01
Filed: 1932-10-26
Abstract: 409,660. Phantom systems. TELEFONAKTIEBOLAGET L. M. ERICSSON, 33, Kungsgatan, Stockholm. Oct. 26, 1932, No. 30010. Convention date, Oct. 30, 1931. [Class 40 (iv).] A band-pass filter applicable to phantom circuits comprises input and output arms inductively linked together, each arm comprising rejector circuits in series or acceptor circuits in parallel. The elements may be symmetrically arranged : thus, the high-frequency circuits may be divided into equal parts A, A, with the low-frequency circuits B, B, between them. A tapping may be provided for phantom-circuit working, and the inductance of the low-frequency input circuit may include coupled coils M, for the purpose of reducing the coupling coefficient between the circuits B. Otherwise the input and output arms contain equal elements. Reference has been directed by the Comptroller to Specification 198,052, [Class 40 (iv)].
Patent GB-465162-A (GB)
Title: Improvements in and relating to gas control valves
IPC: F16K5/10
Filed: 1935-10-30
Abstract: 465,162. Gas valves. FLASCHENGASGERATE GES. Oct. 30, 1935, No. 30016. Convention date, May 23. [Class 135] [Also in Group XI] A gas valve arranged in front of the mixing tube c of a gas burner comprises a chamber a with a gas inlet b and an outlet passage controlled by a spring- closed valve member d and a tubular nozzle e. The valve d is opened when the nozzle tube e is pressed inwardly, the extent of the movement of the nozzle tube regulating the actual flow of the gas through holes e<1>, e<2>, e<3> therein. This actuation is effected by a yoke member h and a cap g which fits around the outer end of the nozzle tube. The cap g also serves to collect any gas escaping around the tube e and to direct it through small openings i<1>, i<2> into the main gas stream.
Patent GB-677216-A (GB)
Title: A new or improved method for producing orthotitanic acid
IPC: C22B34/12
Filed: 1950-12-07
Abstract: Orthotitanic acid is produced by adding an iron- and titanium-containing solution and an alkali solution to a mixing vessel in proportions appropriate to maintain the mixture at pH 3.5-4.5, the precipitate after washing being substantially iron-free and rapid filtering.  The solutions are preferably added simultaneously, continuously and gradually.  Titanium sulphate solution obtained from the reaction of sulphuric acid on ilmenite, and sodium hydroxide or carbonate solution are suitably employed.
Patent GB-409032-A (GB)
Title: Improvements in the attachment of carrying handles to attache and suit cases and thelike
IPC: A45C13/26
Filed: 1932-10-27
Abstract: 409,032. Suit - case &c. handles. CHENEY, C. W., Factory Road, Soho, Birmingham. Oct. 27, 1932, No. 30053. [Class 133.] Attachment plates 5 to receive the loops 3 at the ends of the handle are secured to suit cases &c. by means of sheet metal studs 8, preferably of circular form, having boundary prongs 9 passing through piercings 7 in the plates, the prongs being clinched down after passing through the wall of the case. In the form shown in Fig. 7 the housing for the loop 3 is afforded by a groove 11 formed through the head of the stud.
Patent GB-1182489-A (GB)
Title: Herbicides
IPC: A01N43/832
Filed: 1967-06-29
Abstract: 1,182,489. Herbicides containing benzothiadiazoles. BADISCHE-ANILIN & SODAFABRIK A.G. 29 June, 1967 [30 June, 1966], No. 30074/67. Heading A5E. A herbicidal composition comprises a benzothiadiazole of formula: wherein X is NO 2 , OH or NH 2  and n is 1, 2 or 3, and a solid carrier or a liquid carrier excluding alcohol and containing a wetting or dispersing agent when the carrier is water. Other herbicides, such as urea derivatives, triazine derivatives, carbamate derivatives, pyridazone derivatives and chlorinated fatty acid esters, also may be present. The invention comprises a method of controlling unwanted plant growth in a tract of soil by the use of the active compound per se.
Patent GB-642963-A (GB)
Title: Improvements in or relating to soap or like receptacles
IPC: A47K5/03
Filed: 1947-11-12
Abstract: 642,963. Soap holders. KORNFELD, O. Nov. 12, 1947, No. 30112. [Class 131] In a soap dish, in which contact with the soap is reduced to a minimum, the supporting surface comprises two downwardly by converging portions one of which, 11, is convexly curved in two directions at right angles to each other and the other, 10, is convexly curved in the downward direction and may be concave in the transverse direction. The dish may be in the form of a block or box, mounted on feet or embodied in a wash basin. The ends of the portions 10, 11 are connected to each other by curved rims 12, 13 and a drainage slot 14 is provided between their lower edges. The Provisional Specification states that the supporting surface may be irregularly shaped or may have local indentations or protuberances.
Patent GB-194746-A (GB)
Title: Improvements in and relating to electricity meters
IPC: G01R11/30
Filed: 1921-11-11
Abstract: 194,746. Measurement, Ltd., and Holden, F. Nov. 11, 1921. Mercury motor meters.-A mercury motor meter is provided with means for localizing the current, comprising two conducting plugs g connected by a low-resistance conductor and arranged on the side of the mercury chamber remote irom the supply terminals, and the mercury chamber is provided with plate-conductors d located wholly on the exterior of the chamber and adapted to close apertures f in the wall of the chamber and make contact with the mercury. A seal is alo provided and is operated by a lever n having the words " closed " and " open " at its lower end to indicate the condition of the seal. Specificat on 185,773 is referred to.
Patent GB-736607-A (GB)
Title: Improvements in or relating to radar systems
Inventor: WRIGHT PETER MAURICE
IPC: G01S13/34
Filed: 1954-05-25
Abstract: 736,607. Radar. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BUCKINGHAM, J. May 25, 1954, No. 30142/52. Class 40 (7). A continuous wave frequency modulated radar system of the type using a plurality of differently directed receiver heads each covering a different part of the volume to be watched utilizes a frequency spectrum analyser of the type described in Specification 736,602 to give a cathode-ray tube display. In one embodiment utilizing N heads there is a master time base oscillator 14 whose output frequency is divided by a factor N at 14b and fed to trigger time base generator 14a used to feed the modulating signal to saw-tooth modulator 13 coupled to transmitter 11. Echo signals from objects in the field of the radar are received on appropriately directed heads of the receiving system of which one head 15 is shown. Each head has its own receiver circuit comprising a mixer 16 wherein received signals are mixed with the output of balanced modulator BM fed from the transmitter 11 and the I.F. oscillator IFD, an amplifier RA, a balanced detector BD from which the beat-frequency signals are obtained and a mixer 2. Each of the mixers 2 is fed from a sweeping oscillator 3 operating at the transmission frequency but sweeping through the effective part of its frequency range in 1/Nth of its period. As it is arranged that echo signals from the objects at the limit of the radars range occur within 1/Nth of the repetition frequency all the parts of the outputs of the mixers 2 which are of interest also occur within the first 1/Nth of the repetition period. The outputs from mixers 2 are fed to delay line DL at points along it so that their time delays at the common end of the line differ by 1/Nth of the repetition period and therefore all their parts of interest occur in sequence. Filter 7 picks out the frequency range required which includes either the sum or difference frequencies, or possibly both, of possible signals fed to the mixers 2 during their effective period and the filtered signals are passed to a frequency spectrum analyser of the type described in the above-mentioned Specification comprising the delay line 8 and filters F<SP>1</SP>, F<SP>2</SP> and so on. The output pulses from the analyser are rectified at 9 to provide brightening pulses for cathode-ray tube indicator 6 which may be scanned vertically at the repetition frequency to display azimuth and horizontally at N times the repetition frequency to display range. The output of the sweep generator 3 can be amplitude modulated to produce a better shape of output pulse from the analyser as described in the aforementioned Specification.
Patent GB-311349-A (GB)
Title: Improvements in method of preparing aryl-azo-diamino-pyridines
IPC: C09B29/42
Filed: 1927-11-10
Abstract: 311,349. Croad, A. K., (Pyridium Corporation). Nov. 10, 1927. Arylazo - a - a - (diaminopyridine monohydrochlorides are prepared (1) by coupling diazotized aniline or its homologues or alkyloxy derivatives with a-a-diaminopyridine in the presence of a small quantity of mineral acid or an organic acid the resulting aryldiazoamino-(a)-a-monoaminopyridine bvdrochloride, thus obtained being treated with water or an aromatic amine, (2) by coupling diazotized aniline or its homologues or alkyloxy derivatives with a-a-diaminopyridine in hydrochloric acid solution and converting the arylazo-a-a-diaminopyridine dihydrochloride thus obtained into the monohydrochloride bv means of water..The product has strong bactericidal properties. The following examples are specified (1) Phenyldiazoamino-(a)-a-monoaminopyridine is obtained by coupling diazotized aniline with a-adiaminopyridine in the presence of hydrochloric acid and sodium acetate. (2) Diazotized aniline is coupled with a-a-diaminopyridine in hydrochloric acid solution under specified conditions to obtain phenylazo-a-a-diaminopyridine dihydrochloride and is treated with water to form the monohydrochloride. (3) p-Toluidine is used instead of aniline in the previous example. (4) Phenylazo-a-a-diaminopyridine monohydrochloride is converted into the dihydrochloride.
Patent GB-1196253-A (GB)
Title: Electrochemically Controlled Light Reflection
Inventor: HANSEN WILFORD N
IPC: G02F1/1506
Filed: 1967-06-30
Abstract: 1,196,253. Light modulators. NORTH AMERICAN ROCKWELL CORP. 30 June, 1967 [30 June, 1966], No. 30380/67. Heading H4F. A beam of light to be modulated is directed along a path 32, Fig. 1, through a multiple reflection device 22 comprising a pair of prisms 30 and a light transmitting plate 24 coated with a layer 34 of electrically conducting and light transmitting material e.g. tin oxide glass, the device forming part of an electrolyte container 20 which is filled with an electrolyte 36 and has an auxiliary electrode 38 and reference electrode 40. In operation the light passing along path 32 is ordinarily totally reflected by the interface between the conducting layer 34 and the electrolyte 36. When a modulating potential is applied between electrodes 38 and 34 the interfacial region between coating 34 and electrolyte 36 is modified electrochemically changing the light-absorbing characteristics and causing the beam to be attenuated. A variety of electrochemical processes may be utilized e.g. reduction-oxidation reactions involving at least one highly absorbing substance in solution, changing the absorptivity of a substance absorbed on the coated electrode surface by potential variation, changing the surface states of the coated electrode, changing of the ions in a double layer (provided by absorption) i.e. non-Faradaic processes in the double layer, and changing absorptivity of a substance in the vicinity of the interface by potential charge. The electrolyte may comprise methylene blue in water-soluble form added to water, electrode 34 comprising tin oxide on glass (the methylene blue being absorbed on it) or a film of gold, platinum or palladium on glass. The methylene blue may be replaced by ferroin or iodideiodine solutions, or a slightly acidic solution comprising water and H 2 SO 4  may be used.
Patent GB-884041-A (GB)
Title: Improvements in and relating to detonators for explosives
IPC: F42B3/12
Filed: 1957-09-27
Abstract: 884,041. Detonators. PHILLIPS, J. A. Sept. 25, 1958 [Sept. 27, 1957], No. 30391/57. Class 9(1). A detonator is provided from which the usual primer charge of a sensitive detonating compositon is omitted and comprises a thickwalled casing 1 containing a charge 5 and constricted at one end to form a restricted outlet, the charge 5 being an explosive compound which when unconfined will not detonate but smoulders or burns when ignited. The charge 5 may be ignited by means of an electric fuzehead 4 having leads 6 taken through grooves in the periphery of a closure plug 2. The plug has a loose fit in the casing and is secured by a transverse pin 3. Wadding 8 may be placed under the plug 2 and the closure may be sealed by a water-proofing compound 7. Suitable explosives are said to be pentaerythritol tetranitrate, cyclo-trimethylene trinitramine or tetryl. In a modification, the casing is extended beyond the constriction 9 to support a thin-walled housing 10 also filled with an insensitive explosive which may not be of the same composition as the charge 5. Instead of the electric fuzehead, safety fuze cord may be used to ignite the charge 5.