baber/WOPTO huggingface dataset:
Patent GB-1355988-A (GB)
Title: Electrochemical cell
IPC: H01M12/04
Filed: 1971-11-09
Abstract: 1355988 Primary cells; fuel cells LOCKHEED AIRCRAFT CORP 9 Nov 1971 [14 April 1971] 52088/71 Heading H1B The cell of Fig. 1 comprises a consumable anode 12 of an alkali metal, e.g. Na, a soluble insulating film 14, preferably of hydrated sodium oxide, a cathode 16 of non-reactive material and thermal insulation 18. The electrolyte is concentrated aqueous NaOH and its concentration is controlled by feeding water 28 from a reservoir 36 through a valve 34 and capillary tube 30. A hydrogen vent 32, closed initially by a plug or valve 38, is also provided. To initially activate the cell water is added to react with the sodium anode to form liquid electrolyte and electrical power is produced. When the introduction of water is stopped the electrolyte solidifies and the cell again becomes inactive. Addition of further water reliquefies the electrolyte and the cell is reactivated. Li and LiOH may be alternatively employed as anode and electrolyte respectively, but in this case the electrolyte solution is not as concentrated and, for re-use of the cell to be possible, the water in the electrolyte must be removed after use, e.g. by passing CO 2  through it. In a second embodiment, Fig. 3 (not shown), the anode and cathode are in a spiral configuration. In a third embodiment, Fig. 5, the anode 102 is initially longer than the cathode 106, and as the anode material is consumed it is gravity fed into the cell, guided by a supporting collar 120. This cell may be initially charged with electrolyte. The cell output can be controlled by altering the depth of immersion of the anode in the electrolyte 104 by means of a bellows arrangement pressurized by hydrogen evolved in the cell. A fourth embodiment, Fig. 6 (not shown), has a metal mesh cathode (156) covered by a layer of porous material (162). In damp environments this embodiment does not require a separate water supply. A final embodiment, Fig. 7 (not shown), is for underwater use and has a porous metal cathode (200) and a porous thermal insulation jacket (208).
Patent GB-1043450-A (GB)
Title: Waveform generator
Inventor: JONES ERIC LINDSAY
IPC: H04J1/06
Filed: 1964-12-16
Abstract: 1,043,450. Transistor switching circuits. STANDARD TELEPHONES & CABLES Ltd. Dec. 16, 1964, No. 51169/64. Addition to 983,399. Heading H3T. In a modification of the parent case, the circuit contains switching means 3 (Fig. 1, not shown) formed by the emitter-collector path of a gating transistor which is switched on and off by signal b applied to its base electrode. In operation a sine wave a or a square wave of frequency f is connected to terminals 4. One of the two transistors is able to conduct when the switch 3 is closed by unidirectional pulses b, the transistor conducting being determined by the bias caused by the sine wave. Since the instants when the switch is closed are arranged to coincide with the crests of the sine wave the transistors conduct alternately to produce pulses c substantially equally spaced and of alternating polarity.
Patent GB-1109149-A (GB)
Title: Preparation of imidazo[2,1-b]thiazoles
Inventor: DOYLE PETER
IPC: C07D513/04
Filed: 1965-12-10
Abstract: Imidazo-[2,1-b] thiazole derivatives of the formula <FORM:1109149/C2/1> (wherein the 2,3-bond is a single or double bond and Ar is thienyl, furyl, naphthyl, benzyl or phenyl optionally halo, nitro, amino or trifluoromethyl substituted, but excluding the 2,3-unsaturated 5-benzyl compound) and acid-addition salts thereof are prepared by ring closure of an acid-addition salt of a base of the formula <FORM:1109149/C2/2> and an aromatic sulphonic acid, which itself may be prepared from the appropriate Ar-substituted ethylene oxide and 2-amino-2-thiazoline or 2-amino-thiazole in a C1- 10 alkanol followed by addition of the required aromatic sulphonic acid. The ring closure may be effected with a cyclization agent such as sulphuric or polyphosphoric acid or by conversion of the hydroxy compound to the corresponding halogeno compound (by reaction, for example, with a phosphorus halide or oxyhalide or thionyl chloride) which may or may not be isolated, and cyclization of this with a base.
Patent GB-1535769-A (GB)
Title: Extraction of zinc or lead from their sulphides
IPC: C22B19/20
Filed: 1975-12-23
Abstract: 1535769 Smelting sulphidic ores R SWANSON 23 Dec 1975 52607/75 Heading C1A [Also in Division C7] Metallic Pb or Zn are extracted from sulphidic ores by smelting the ore under vacuum with fused NaOH or KOH to produce the metal and an alkali metal disulphide, smelting the disulphide under vacuum with more ore to produce the metal and a trisulphide, and so on until an alkali metal pentasulphide is produced. The sulphides are separated from the reaction products at each stage by washing with water or ethanol. It is essential that the smelting under vacuum is carried out in the absence of CO 2 , O 2  and H 2 O. Examples are given of the production of Zn from smelting ZnS with fused KOH, and of Pb from PbS and fused NaOH, together with recovery of Na and K sulphides.
Patent GB-1294087-A (GB)
Title: Improvements in and relating to gas cooled nuclear reactors
Inventor: ALLBESON KEITH FREDERICK
IPC: G21C15/02
Filed: 1968-11-08
Abstract: 1294087 Moderator structures NUCLEAR POWER GROUP Ltd 7 Nov 1969 [8 Nov 1968] 53102/68 Heading G6C In a gas cooled nuclear reactor, the moderator is formed of graphite blocks, 1, cooled by gas flowing downwards through the passages, 6, to the spaces, 8, formed in the blocks 2. The spaces, 8, are interconnected and the gas leaves through duct, 9. Radiation in duct 9 is reduced by radiation shielding 10, e.g. steel, on the blocks adjacent to 9. A steel neutron shield, 14, is interposed between the blocks 1 and 2 and the blocks, 3, limit the flow of gas from 8 between the blocks 4. To maintain the core upper surface level the blocks rest on the spherical seats, 13, which counteract floor irregularities. In an alternative form, the blocks, 2, may be replaced by metal tubes which have external thermal insulating sleeves and are cooled internally by a gas flow.
Patent GB-1147508-A (GB)
Title: Lubricant composition
IPC: C10N60/02
Filed: 1967-11-22
Abstract: 1,147,508. Lubricants. MOBIL OIL CORP. 22 Nov., 1967 [30 Jan.. 1967], No. 53154/67. Addition to 1,090,288. Heading C5F. A lubricant comprises a major proportion of a hydrogenated, liquid, poly-C 4 -C 15 -olefin and a minor proportion of a diorgano phosphonate. The phosphonate may contain 2-50 carbon atoms and may have the formula where n is 0-5 and R is alkyl, cycloalkyl, aralkyl, halo, haloalkyl, alkoxy, aryl and alkaryl, the alkyl radicals being C 1 -C 18 . The preferred base oil is hydrogenated poly-(l-decene).
Patent GB-1356129-A (GB)
Title: Educational and game apparatus particularly useful for teaching spelling and word recognition and for providing entertainment
IPC: G09B17/00
Filed: 1971-11-19
Abstract: 1356129 Educational device P A MERCORELLI and J M MERCORELLI 19 Nov 1971 [16 Feb 1971] 53737/71 Heading G5G An educational device comprises a cylinder 40 mounted rotatably in a housing and having rows of first indicia, e.g. words, exposable respectively through windows 22 in the housing, a plurality of rotatably mounted discs 50, 52, 54, 56 operable in response to rotation of a finger wheel 30 and bearing a plurality of second indicia related to the first indicia (e.g. pictures illustrating the words), and means 80 for concealing said discs during operation of the finger wheel and operable thereafter to expose a predetermined one of said second indicia. In use, a word appearing in one of the windows 22 is spelt by dialling letters on the finger wheel; if the spelling is correct, a picture illustrating the word appears when the relevant flap 80 is lifted. The finger wheel and discs are linked by gearwheels. The gear-wheel 68 of one disc 56 is provided with a bevelled portion 85 having a stop surface 86 which upon clockwise rotation of the gear 68 engages a pivotally mounted member 88, whilst allowing unlimited counterclockwise rotation. By these means, the finger wheel can be rotated counterclockwise to a predetermined position before each spelling operation. Each disc is splined to the axle of its respective gearwheel by a distinctive shape 58-61, which may be a numeral corresponding to the numbered windows 22. A plurality of discs may be provided for each axle. The lower surface of the main gear 36 may have a series of depressions 90 in which spring-mounted ball detents 92 engage, thereby imparting stepwise movement to the rotation of the finger wheel.
Patent GB-1211878-A (GB)
Title: Improved supply roll cover arrangement for air filter apparatus
IPC: F24F13/28
Filed: 1967-11-29
Abstract: 1,211,878. Travelling band gas filter. AMERICAN AIR FILTER CO. Inc. 29 Nov., 1967 [2 March, 1967], No. 54337/67. Heading B1T. A gas filter of the non-endless travelling band type has its supply roll, extending into the dirty gas stream (Fig. 1, not shown), covered by a two-part shield which contracts as the filter web is used up, the two parts being connectable along abutting edges parallel to the roll axis by lips 14, 27. Fig. 6 shows a shield with rigid metal upper part 13 and a lower part 24 in the form of a roller blind wound on but extensible from a spring-loaded rotatable mandrel 26. In Fig. 5 (not shown) the lower part is a roll of plastics sheet, resiliently set in its rolled form and opened out to connect with part 13. In Figs. 7, 8 (not shown) the lower part is merely suspended at its inner end and extends round the supply roll somewhat before being folded back to engage the edge 14, and the rotation of the supply roll tends to wind the lower part up, extending the fold round the roll. In Figs. 3, 4 (not shown) both upper and lower parts are rigid, metal and arcuate, and the inner edge of the lower part is biassed upwards by springs (19) to contract the shield. Upper part 13 is pivoted to the housing frame 2. All the shield parts are of such width as to fit between the end plates 10 of the supply roll. The filter web is of bonded glass fibre, and may be disposed of reconditioned after use.
Patent GB-1409817-A (GB)
Title: Dyeable polyurethane elastomer and its production
IPC: C08G18/10
Filed: 1972-11-24
Abstract: 1409817 Dyeable segmented polyurethane elastomers TOYO BOSEKI KK 24 Nov 1972 [25 Nov 1971 10 March 1972] 54343/72 Heading C3A A dyeable segmented polyurethane elastomer contains the copolymerized residues of:-(i) an isocyanate - terminated polyurethane containing residues of (a) an organic polyisocyanate and (b) a polyol of M.W. 500 to 6000 and M.P. not above 60‹ C.; (ii) an isocyanate-terminated polyurethane containing residues of (a) as in (i), (c) a diol containing tertiary nitrogen and (b) at least 7 mol. per cent based on (c) of (b) as in (i); and (iii) a monomeric polyfunctional compound selected from diamines, hydrazine, dihydrazides, glycol and water. Residues (ii) are preferably present in proportions providing 10 to 150 mmole/kg. of polymer. Specified t-N- containing diols are those of formula where R 1  to R 4  are optionally substituted alkyl or cycloalkyl or R 1  and R 2  may be H; R 5  to R 7  are optionally substituted alkylene or cycloalkylene; and n is 1 to 10, and salts thereof. In examples various diols (ii) (c) are used; (i) and (ii) (a) is 4,4<SP>1</SP>-diisocyanato-methane; (i) and (ii) (b) is a polytetramethylene glycol of M.W. 800, 1000, 1300 or 1320, polylactone diol of M.W. 1250, or a polyester of M.W. 1785 of adipic acid and a mixture of 1,4-butane- and 2,2-dimethylpropane-1,3-diols; and (iii) is 1,1- propylene diamine.
Patent GB-1344117-A (GB)
Title: Tool for deburring pipes
IPC: B23B5/16
Filed: 1971-11-23
Abstract: 1344117 Pipe burr C F STICKLER 23 Nov 1971 [1 Dec 1970] 54350/71 Heading B3C [Also in Division B4] A tool for deburring pipes 20, e.g. of plastics material or metal comprises a sheet metal body member 26 having inner and outer surfaces 28 formed with apertures 34 having inwardly and outwardly directed burrs 36, 38 providing cutting edges engageable with the end edge of the pipe to which the tool is applied in concentric relation. In modifications the apertures may be circular, Fig. 7 (not shown), or rectangular, Fig. 6 (not shown). A flange 32 is formed on the tool to provide a grip for manual operation; alternatively the tool may be power driven.
Patent GB-1478167-A (GB)
Title: Watch movement
IPC: G04B33/14
Filed: 1974-12-17
Abstract: 1478167 Watch barrels A SCHILD SA 17 Dec 1974 [17 Dec 1973] 54470/74 Heading G3T In a watch movement having a barrel 1 with an arbor 5 pivotally supported in a bottom plate 8 and a bridge 16, the bridge having a notch 17 in which a detachable bearing 10 is engaged so that the arbor and barrel can be removed laterally after detachment of the bearing, the latter comprises a cylindrical hub 13 with two opposed arms 14 terminating in hooks 15 which can be engaged in keyholeshaped openings 18, 19 in the bridge to retain the bearing. The bearing hub and arms project axially inwards beyond the bridge by a depth at least equal to that of the lower pivot portion 7 of the arbor, allowing the latter to be disengaged from the plate 8. A ratchet wheel 11 is retained on a square 9a on the arbor by a screw 12. The form of opening 19 permits a spring blade to be secured therein to act as a click on the wheel 11 and further to retain the bearing 10.
Patent GB-1405305-A (GB)
Title: Gasoline composition
IPC: C10L1/238
Filed: 1972-11-29
Abstract: 1405305 Polyolefin derivatives BRITISH PETROLEUM CO Ltd 13 Nov 1973 [29 Nov 1972] 55087/72 Heading C3P [Also in Division C5] Compounds of formula RR<SP>11</SP>NR<SP>1</SP>CH 2 OH where R is a hydrocarbyl group containing at least 20 carbon atoms and derived from a polyolefin, R<SP>11</SP> is H or C 1-4  alkyl and R<SP>1</SP> is an aminosubstituted hydrocarbylene group, may be prepared by an alkanolamine HR<SP>11</SP>NR<SP>1</SP>CH 2 OH with RX, where X is chloride or bromide. R may be derived by the polymerization of ethylene, propylene, a butene or 4-methylpentene-1, preferably isobutylene. The reaction may be effected in an inert solvent, e.g. xylene, in the presence of an acid acceptor, e.g. sodium carbonate. The compounds are useful as detergent additives for gasoline fuels. Examples describe the reaction of chlorinated polyisobutylene with N-(2-aminoethyl)ethanolamine.
Patent GB-552101-A (GB)
Abstract: 552,101. 2 - Amino - pyrimidine. AMERICAN CYANAMID CO. Feb. 12, 1942, No. 1896. Convention date, March 25, 1941. [Class 2 (iii)] 2 - Amino - pyrimidine is prepared from 2 - amino - 4 chloro - pyrimidine by reduction in aqueous dispersion with finely divided zinc under alkaline conditions in the presence of a sufficient amount of an ammonium ion to prevent frothing. If the ammonium radical is present either in the form of ammonium hydroxide or ammonium phosphate, the reduction proceeds more rapidly and smoothly with greatly reduced frothing. The preferred amount of ammonium ions is one tenth the amount of alkali ions present. Examples are given in which the reduction is conducted in the presence of (1) zinc dust, anhydrous trisodium phosphate and ammonium phosphate ; (2) zinc dust, trisodium phosphate, and aqueous ammonia; (3) zinc dust, trisodium phosphate, ammonium phosphate and ammonium hydroxide ; (4) zinc dust, trisodium phosphate and aqueous ammonia ; (5) zinc dust and aqueous ammonium carbonate; (6) zinc dust, sodium bicarbonate, and aqueous ammonia ; (7) zinc dust and aqueous ammonia, the reaction being conducted in an autoclave. Specification 551,677 is referred to.
Patent GB-1378642-A (GB)
Title: Method of classification of clay minerals and its apparatus
IPC: B01J8/14
Filed: 1971-12-01
Abstract: 1378642 Classifying clay in hydrocyclone SANYO PULP CO Ltd 1 Dec 1971 55871/71. Heading B2P Clay minerals are classified according to particle size by treating a clay slurry having a 2-20% by weight of solids content under a pressure of 1-6kg/cm<SP>2</SP> in a hydrocyclone which comprises a frusto-conical portion having an axial length of 500-1500 mm and a cone angle of 3-8‹ and terminating at its narrow end into a reject outlet having a diameter of 1-8 mm. The hydrocyclone has a top cylindrical part of 70-80 mm in diameter and a vortex finder of 10-30 mm in diameter for the discharge of clay particles of the desired size. The average size of clay particles in the feed suspension is less than 30Á and the size of the desired particles recovered through the vortex finder is between 5.5 and 7.7Á. Clay particles above 50Á may be removed by screening before the suspension is fed to the hydrocyclone. Examples treating clays containing kaolin and pyrophyllite agalmatolite are given.
Patent GB-1169218-A (GB)
Title: Improvements in and relating to Electric Resistance Welding
Inventor: SCIAKY DAVID
IPC: B23K11/25
Filed: 1966-12-14
Abstract: 1,169,218. Welding by pressure. D. SCIAKY. 14 Dec., 1966 [6 Jan., 1966], No. 56001/66. Heading B3R. In a resistance spot welder having fixed and movable electrodes the movement of and force applied to the movable electrode is effected by a pneumatic device and an electromagnetic device. The pneumatic device moves the electrode into contact with the work and the electromagnetic device exerts the required welding pressure, or the pneumatic device effects the movements and exerts an excess pressure which is opposed by the electromagnetic device. In either case the current and pressure follow predetermined programmes which may include post-heating of the weld under pressure. The movable electrode is carried by a rod 15, Fig. 1, connected to the diaphragm 11 of a pneumatic actuator. The electromagnetic device has a fixed iron part 2 and a moving iron part 3 supported by springs 48 and mounted on the rod 15 so as to have limited sliding movement. As the diaphragm 11 moves the rod 15 towards the work the head 45 of a screw 44 in the upper end of the rod 15 engages the moving iron part 3, so that further movement and the pressure applied to the electrode are governed by the forces of the springs 46 and the electromagnetic device acting against the larger pneumatic force. The pressure and current programmes may be automatically controlled. A programmed reference voltage 27 is fed to a current amplifier and regulator 31 which controls the electromagnetic device which controls the pressure applied to the movable electrode. A force transducer 22 senses the electrode pressure and produces a signal 28 which is compared with the reference voltage 27 by a device 29. The latter feeds a correcting signal to the regulator 31. Alternatively the retro-active part of the circuit may be omitted. In either case numerical control may be used. In a modification for use where the work is advanced intermittently, the electrodes are roller electrodes.
Patent GB-1193330-A (GB)
Title: Improvements in or relating to Permanent Memory System
Inventor: GHARIBIAN WARANT MICHAEL
IPC: G11C17/08
Filed: 1967-12-11
Abstract: 1,193,330. Read-only stores; coders. INTERNATIONAL COMPUTERS Ltd. 3 Dec., 1968 [11 Dec., 1967], No. 56196/67. Headings G4A and G4H. A read-only memory has a plurality of word lines each feeding each of a plurality of switching matrices, energization of any one of the word lines energizing a single output of each matrix to cause a coder respective to each matrix to supply a respective section of an output word. A binary address is decoded to energize 1 of 4096 word lines passing through each of 8 diode matrices, thereby energizing 1 of 256 output lines of each matrix, the output lines of each matrix feeding a respective coder to convert the 1-out-of-256 marking to two 1-out-of-16 markings and then 8-bit form, using three diode matrices. A 64-bit output word is constituted from the 8-bit signals from the 8 coders. Parity.-in each coder, the two matrices performing the conversion from 1-out-of-16 form each also produce a parity bit. A parity bit for the 64-bit output word is derived from the two parity bits from each coder, and is also compared as a check with a parity bit obtained by diodes connected to selected ones of the word lines.
Patent GB-1449220-A (GB)
Title: Seals control fo the composition of exhaust gases of internal
IPC: F16J15/32
Filed: 1973-12-05
Abstract: 1449220 Seals SPERRY RAND CORP 5 Dec 1973 [11 Dec 1972] 56401/73 Heading F2B A lip seal of C-shaped cross-section is reinforced by wholly or part filling the hollow of the C with a ring of softer elastomeric material, e.g. a silicone rubber adhesive sealant 24 bonded to the seal body. A garter spring 20 may be embedded in the ring.
Patent GB-1255365-A (GB)
Title: Treatment of keratin fibers
Inventor: HSIUNG DU YUNG
IPC: A61K8/46
Filed: 1969-11-18
Abstract: 1,255,365. Treating keratinous fibres. GILLETTE CO. 18 Nov., 1969 [25 Nov., 1968], No. 56456/69. Heading D1P. Keratinous fibres e.g. human hair, wool are treated by a method which comprises (a) sulphitolysing the fibres to form S-sulpho groups or both S-sulpho groups and thiol groups in a ratio of at least 1:4 in the keratin (b) changing the configuration of the fibres and (c) treating the fibres while in the changed state with an aqueous solution having a pH of from 5 to 11 comprising from 0.02 to 0.3 mole per litre of a water soluble, sulphur containing compound consisting of an alkali metal, ammonium or lower alkanolamine sulphide or hydrosulphide, an aliphatic mercaptan or disulphide, or mixtures thereof, providing that when said aliphatic disulphides are the sole sulphur containing compound, the S-sulpho:thiol ratio is in the range from 4:1 to 1:4. The sulphitolysis of the fibres may be carried out using an aqueous solution preferably having a pH of from 4.5 to 11 of water soluble sulphites, bisulphites or hydrosulphites e.g. the alkali metal, ammonium or lower alkanolamine salts, or solutions may also be used containing in addition an oxidising agent such as a cupric or ferric ion or a water soluble polythionate e.g. alkali metal, ammonium or lower alkanolamine trithionates, tetrathionates, pentathionates and hexathionates or it may be carried out using solutions containing in addition to the sulphites bisulphites or hydrosulphites a reducing agent e.g. a water soluble mercaptan. Suitable sulphur containing compounds are the mono-, di-, and tri, ethanolamine and isopropanolamine sulphides and hydrosulphides, cysteine, thioglycolic acid, dimercaptoadipic acid, thiolactic acid, betamercaptopropionic acid, thioglycol, thioglycerol and mercaptoethyl sulphonate, cystine, dithiodiglycolic acid, the cyclic disulphide of dimercaptoadipic acid, thiolactic acid disulphide, beta-mercaptopropionic acid, ammonium thioglycolate and the ammonium salt of cysteine. Preferably temperature ranges for the final treatment are from ambient to 35C for treating hair, and from ambient to 100C for treating wool.
Patent GB-1166871-A (GB)
Title: A Process for the Preparation of Alkyl 4-Halophenylether Derivatives
IPC: C07C205/26
Filed: 1966-12-16
Abstract: 1,166,871. Alkyl phenyl ethers. SOC. D'ETUDES SCIENTIFIQUES ET INDUSTRIELLES DE LILE-DE-FRANCE. 16 Dec., 1966 [17 Dec., 1965], No. 56481/66. Heading C2C. The invention relates to alkyl phenyl ethers of the general formula in which R 1  is a nitro or alkanoyl amine group, R 2 is an alkyl, alkoxy carbonyl or alkanoyl group and X is a halogen atom and R 6  is an alkyl group. The compounds may be prepared by reacting a compound of the general formula with a compound of a general formula R 3  #<SP>R4</SP> R5   in which R 3  is an alkylidene group, R 4  is a hydrogen atom, R 5  is a halogen atom or the group SO 4 R 7  in which R 7  is a hydrogen atom or an alkyl group or R 4  and R 5  together form radical N 2 . Examples are given of the preparation of 2 - methoxy - 4 - acetamido - 5 - chloro acetophenone and 2 - methyl - 4 - chloro - 5 - nitroanisole. The starting materials of Formula (I) may be prepared for example, by adding sodium nitrite to an acidic solution of 4-chloro 5-nitro ortho toluidine to produce 4-chloro 5-nitro orthocresole or reacting 3-acetamido- 4-chlorophenyl acetate with anhydrous aluminium chloride to produce 2-hydroxy-4- acetamido-5-chloroacetophenone.