baber/WOPTO huggingface dataset:
Patent GB-962587-A (GB)
Title: Polytetrafluoroethylene molding powder
IPC: C08J3/12
Filed: 1961-11-29
Abstract: In a process for producing free-flowing polytetrafluoroethylen (P.T.F.E.) moulding powder an aqueous slurry of granular P.T.F.E. powder having a specific surface area of from 1 to 4 sq.m./g. is subjected to the action of blades at not more than 30 DEG C. until the slurry has an average weight particle size of 200 to 700 microns, the powder is separated, washed with agitation in water at 40 to 70 DEG C., and then dried.  "Average weight particle size" is defined in terms of a modification of ASTM D-1457-56T.  A suitable starting slurry can be obtained by the process of Specification 574,688.  A bladed commercial comminuting machine suitable for use in the process is described.  Specifications 572,265 and 638,328 also are referred to.
Patent GB-1075938-A (GB)
Title: Laminated board
IPC: B29C65/48
Filed: 1964-10-20
Abstract: 1,075,938. Laminates. WELLINGTON ELECTRONICS Inc. Oct. 20, 1964 [Oct. 2, 1964], No. 42682/64. Heading B5N. A laminated board comprises at least one ply of wood or fibre board and at least one ply of metal which has had at least one surface etched in a random manner to form cavities having irregular and undercut shapes to provide a surface of greatly increased effective bonding area, the etched surface of said ply of metal being held to an adjacent surface of said ply of wood or fibre board by a continuous layer of adhesive substance between them, said adhesive substance entering the irregular and undercut shapes of the etched area and thereby bonding to a substantially greater area than would be available with unetched metal. Aluminium is the specified metal.
Patent GB-1361802-A (GB)
Title: Glass cutting
IPC: C03B33/09
Filed: 1971-09-14
Abstract: 1361802 Thermally scoring glass PPG INDUSTRIES Inc 14 Sept 1971 [15 Sept 1970] 42745/71 Heading C1M Flat glass is thermally scored along an intended path of cut by providing at least one heater for heating gas and directing a stream of heated gas on to the glass, and providing relative movement between the glass and heaters along the said intended path. The glass is subsequently severed by applying a bending moment about the path of cut. An edge nick is preferably applied along the path of cut either before or after thermal scoring takes place. As shown, the glass G is mounted on a wheeled carriage 10 so that it may be moved relative to an array of heaters 18. Each heater comprises a tube attached to a manifold 31 for supplying air and contains an electrically heated filament for heating the air prior to its expulsion through a nozzle provided at the end of the tube remote from the manifold.
Patent GB-1142927-A (GB)
Title: Pipe bending machines
IPC: B21D7/025
Filed: 1967-09-20
Abstract: 1,142,927. Bending tubes. HILGERS MASCHINEN-UND APPARATE-BAUANSTALT m.b.H. 20 Sept., 1967 [1 Oct., 1966], No. 42759/67. Heading B3E. In a tube bending machine in which axial compression is applied to the tube as it is being bent, the tube is clamped between jaws mounted on a carriage movable axially of the tube, the jaws moving in a plane which is inclined at an angle of about 45 degrees to the horizontal. The carriage 12 is slidable along the guide 11 by an hydraulic ram 13 and carries a fixed jaw 14 and a movable jaw 15. The jaws are held to the carriage by dovetail guides, the movable jaw being attached to a block 17 and being moved in the clamping direction by the straightening of toggle links 19 which are connected to an hydraulic cylinder assembly 18. The direction of movement of the jaw is at an angle of 45 degrees to the plane in which the tube is bent, so that the bent end 10<SP>1</SP> can be brought close to the unbent part 10 of the tube.
Patent GB-1479614-A (GB)
Title: Polymer process
IPC: C08J3/24
Filed: 1974-10-03
Abstract: 1479614 Non-porous urea-formaldehyde particles DULUX AUSTRALIA Ltd 3 Oct 1974 [4 Oct 1973] 42927/74 Heading C3R Cured urea-formaldehyde (UF) particles are prepared by dispersing an aqueous UF syrup of U : F ratio 1 : 1À9-2À3 and at least 65 wt. per cent solids content in a hydrocarbon liquid, i.p.o. a stabilizer for the dispersion and optionally 0-15 wt. per cent of the continuous phase of a polymeric thickener, hardening the UF resin with a catalyst therefor, and azeotropically removing water to give an anhydrous slurry of the UF particles in the hydrocarbon liquid. In Examples 1 and 4 a syrup of U : F ratio 1: 2À2, with and without TiO 2  pigment, is dispersed in xylene containing a methyl methacrylate thickener and an acrylic resin stabilizer and hardened with H 2 SO 4 .
Patent GB-1346107-A (GB)
Title: Pivoted back rests for looms
IPC: D03D49/06
Filed: 1971-09-15
Abstract: 1346107 Pivotal back rests ELITEX-ZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITELSTVI 15 Sept 1971 [18 Sept 1970] 42953/71 Heading D1E A back rest 7 is mounted on arms 4 by adjustable effect dampers 16 which are responsive to rapid changes in warp tension, the arms 4 being damped by double acting dampers 9 responsive to slow changes in warp tension.
Patent GB-922332-A (GB)
Title: Improvements in and relating to a fluid flow control valve
Inventor: SHATTOCK CHARLES FREDERICK BAY
IPC: F16K27/04
Filed: 1960-12-14
Abstract: 922,332. Valves. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Oct. 31, 1961 [Dec. 14, 1960], No. 42961/60. Class 135. A fluid-flow control valve comprising a body member 10 having a tapered bore 11 therein provided with a plurality of passages 12 forming lands 16, 17, 18, 19, 20 therebetween, a bush 21 located in the bore and having a series of ports 22 in communication with the passages, a plunger 34 slidably mounted in the bush to control fluid flow through the ports, and sealing means 29, 30, 31, 32, 33. The sealing means, such as 0-rings, may be mounted in grooves 24, 25, 26, 27, 28 cut in the periphery of the bush or in the lands formed in the tapered bore.
Patent GB-1497312-A (GB)
Title: Production of printed circuit arrangements
IPC: H05K1/00
Filed: 1975-10-22
Abstract: 1497312 Printed circuits INTERNATIONAL COMPUTERS Ltd 18 Oct 1976 [22 Oct 1975] 43289/75 Heading H1R A printed circuit having through holes is formed by coating a polyamide film on both surfaces with a thin layer of chromium overlain by a thin layer of copper, on which layers of photoresist are deposited and exposed to U.V. light through masks defining the positions of holes to be formed in the substrate. After development to expose the hole locations, the substrate and metallized layers are etched in respectively ferric chloride and alkaline ferricyanide in an oscillating jig, and then in hydrazine hydrate to penetrate the substrate; the hold being undercut beneath the metallization with a narrower a narrower central region (Figs. 1 to 5, not shown). Thereafter a second photoresist is applied, masked, and illuminated to define a narrow band of substrate surrounding each of the holes and to remove the overhang. The photoresist is removed and the walls of the holes and the annular rings are electrolessly copper plated to provide electrical continuity and reinforced with copper by electroplating. A further photresist is applied to both sides of the substrate, masked, and illuminated to define a required surface pattern of conductors. After development, these are deposited electrolytically from copper or nickel, and plated protectively with tin/lead or gold. The photoresist is removed and the chromium and copper layers are etched out from between the conductors using ferric chloride or ammoniacal etchant (Figs. 6 to 8, not shown).
Patent GB-1277886-A (GB)
Title: Androstenones
Inventor: MARX ARTHUR FRIEDRICH
IPC: C07J7/00
Filed: 1968-09-11
Abstract: 1277886 14α,17α-(Substituted methylenedioxy)-androstenes KONINKLIJKE NEDERLANDSCHE GIST-EN SPIRITUSFABRIEK NV 10 Sept 1969 [11 Sept 1968] 43295/68 Heading C2U The invention comprises compounds of formula wherein R is C 1-5  aliphatic hydrocarbyl or is phenyl, and R<SP>2</SP> is Cl, Br, I or acetoxy. Compounds I wherein R<SP>2</SP> is acetoxy are prepared from 14α,17α-dihydroxyprogesterone by acetalization to introduce the desired 14,17- bridge, followed by conversion of the 20-oxo group to a hydroxyimino group (with temporary protection of 3-oxo-#<SP>4</SP> as 3-alkoxy#<SP>3</SP>'<SP>5</SP>), and then Beckmann rearrangement to give a 17#- acetamido group followed by reaction with e.g. nitrosyl chloride in acetic acid and acetic anhydride to give the desired 17#-acetoxy group. The final step may yield 14α-hydroxyandrost-4- ene-3,17-dione as a by-product. Compounds I wherein R<SP>2</SP> is Cl, Br or I are prepared from compounds of formula by a "modified Hunsdiecker reaction". Compounds VII are prepared from 14α,17α,21-trihydroxyprogesterone either by oxidation to give the 17#-carboxy group followed by acetalization, or by acetalization (preferably with temporary protection of 21-hydroxy as acetoxy) followed by oxidation to give the 17#-carboxy group. Compounds I are stated to possess progestational activity, and may be made up with carriers into pharmaceutical compositions for oral and parenteral administration.
Patent GB-434814-A (GB)
Abstract: 434,814. Checking receipts. NATIONAL CASH REGISTER CO., Dayton, Ohio, U.S.A. March 7, 1934, No. 7267. Convention date, Sept. 15, 1933. Addition to 250,958, [Class 106 (i)]. [Class 106 (i)] Cash registers with operating means.-In a machine according to the parent Specification wherein the insertion of a cashier's key frees the release shaft and sets up characterizing type, the insertion of the cashier's key is normally prevented by locking means and the release shaft is not freed until the cashier's key is locked in the machine. As described in the parent Specification, the release shaft 21 is connected by a resilient link 18 to a shaft 15 carrying a number of locking plungers and released by the insertion of a cashier's key 11. According to the present invention, insertion of the cashier's key is normally prevented by a slotted slide 26 controlled by a lock 30, operation of which by a removable key rocks a lever 34 and thus raises the slide to position notches 29 therein in register with the guide way for the cashier's key. After the insertion of the cashier's key, the lock 30 is restored to normal condition, thus lowering the slide and locking the cashier's key in the machine by the engagement of the constricted walls of the slide within slots in the key. The release shaft is locked by an arm 37 of the lever 34 while the lock 30 is conditioned to enable the insertion of the cashier's key. A counter 41 registers the number of operations of the lock 30.
Patent GB-1529406-A (GB)
Title: Digital compound conference system
IPC: H04M3/56
Filed: 1976-10-21
Abstract: 1529406 TDM conference systems INTERNATIONAL STANDARD ELECTRIC CORP 21 Oct 1976 [24 Oct 1975] 43696/76 Heading H4K A TDM compound conference system includes a master conference unit (CU) 1 coupled to a plurality of remote CU's 2,3,4 by respective trunks 5, 6, 7. Each CU is able to supervise a conference between its "own" conferees and in addition the master and remote CU's are able to cooperate under the control of the master CU to connect all the conferees into a single compound conference. The supervision of an "internal" conference by a remote CU is undertaken by the master portion, e.g. 9a, of that CU. During a compound conference, however, the master portion of a remote CU is inhibited, supervision then being vested in the slave portion, e.g. 8a, which is controlled by the master portion 9 of the master CU. Preferably intelligence is transferred in the form of continuous variable slope delta modulation.
Patent GB-1426006-A (GB)
Title: Oxygenator
IPC: A61M60/827
Filed: 1973-09-18
Abstract: 1426006 Aerating liquids blood oxygenator TECNA CORP 18 Sept 1973 [5 Oct 1972] 43795/73 Headings B1C and B1X [Also in Division A5] A blood oxygenator comprises a stator 4 having a rotor 16 mounted on a shaft 17 and spaced in a disc-like cavity within the stator, first gas-permeable support wafers 28, 29 disposed on upper and lower walls 9, 11 of said cavity, further similar wafers 31, 32 disposed on walls 26, 27 of the rotor, membranes 33, 34, 36, 37, permeable to gas but not readily to liquid, respectively in contact with said wafers 28, 29, 31, 32 a passage 56-58 extending from adjacent the centre of said cavity to the periphery thereof, an inlet 41 in the stator connecting with a duct 42, said gas passing through the wafers 28, 29 and out of said stator through a passage 44, a duct 46 through which gas is led into said rotor, through the wafers 31, 32 and out of said rotor through a lower chamber 53, a passage 63 for conducting blood into said cavity and into that passage 58 adjacent the centre of said rotor, and a discharge opening 67 in a peripheral wall 12 of said cavity for conducting blood out of said cavity. Superficial irregularities, not shown, on said membranes impart a centrifugal force to the blood in the passages 56 and 57 and so induce it to flow through the entrance passage 63, through the passages 56, 57 in a genarally radial path and out at the opening 67 without the need for an exterior circulating pump. In order to augment the blood flow, a membrane (68) Fig. 3, (not shown), similar to the aforementioned membranes, with an integrally formed upstanding radial vane (69) projecting into the adjacent passage 56 or 57, is provided. The rotor is connected to a motor for turning said rotor on bearings 19, 21 about a central axis 22. In an alternative embodiment, the said wafers are formed of mounds or ridges integral with the material of the rotor or stator.
Patent GB-1067680-A (GB)
Title: Foundry moulding process and novolak resin composition for use therein
Inventor: STANDEN COLIN JOHN SMEED
IPC: B22C1/16
Filed: 1962-11-20
Abstract: A composition for use in foundry moulding comprises an alkaline earth metal salt of a novolak resin and a water-soluble organic compound which does not form a stable carbonate and contains the group -NH.CX.NH-, wherein X is O, S, or = NH.  Specified compounds are urea, thiourea, sym-dimethylurea, N-phenylurea, biuret, 2-imidazolidone and 2-imidothiazolidone. The composition will usually be an aqueous solution also containing a curing agent for the resin, e.g. hexamethylenetetramine or a solid polymer of formaldehyde.  In the production of foundry cores or moulds a mixture of such aqueous solution with sand is contacted with a pattern, treated with carbon dioxide to precipitate the resin, and heated.
Patent GB-1145635-A (GB)
Title: Preparing aromatic spray dried coffee
Inventor: HUSTE ARNO
IPC: A23F5/48
Filed: 1967-09-26
Abstract: 1,145,635. Instant coffee. GENERAL FOODS CORP. 26 Sept., 1967, No. 43851/67. Heading A2B. An aqueous extract of coffee having a solids concentration of 40-46wt. per cent. is spray dried at a droplet size of 100-250 microns, with drying gas temperatures of 220-250‹F. at the inlet and 200-220‹F. at the outlet. Aromatic materials, such as steam volatiles and expressed oils, which were removed prior to forming the extract, may be added to the extract. The droplets may be projected upwardly into the drying zone for reverse-flow spray drying.
Patent GB-1094238-A (GB)
Title: Methyl benzylketones
IPC: C07C45/58
Filed: 1965-10-15
Abstract: Methyl benzyl ketones of formula <FORM:1094238/C2/1> in which each of R3 and R4 is a hydroxy, esterified hydroxy or tetrahydropyranyl radical or R3 and R4 together represent a C1-C3 alkylenedioxy radical are prepared by mixing a C1-C5 alkyl a -halo propionate, a strong base and a compound of formula <FORM:1094238/C2/2> in which each of R and R1 is a hydroxy, esterified hydroxy, C1-C5 alkoxymethyloxy or tetrahydropyranyl radical or R and R1 together represent a C1-C3 alkylenedioxy or a carbonyldioxy radical, to produce a compound of formula <FORM:1094238/C2/3> in which R2 is a C1-C5 alkyl radical, heating this ester in situ with a solution of an alkali metal hydroxide to saponify the ester and produce the alkali metal salt of the acid, and heating the salt with a strong mineral acid to affect decarboxylation and re-arrangement to produce the required compound. Any carbonyldioxy or alkoxymethyloxy groups present in the starting material are hydrolysed to hydroxy groups during the course of the reaction.  The methyl benzyl ketones may be converted to a  - methyl - 3,4 - dihydroxyphenylalanine by reacting them in aqueous solution with potassium cyanide and ammonium carbonate to form the corresponding hydantoins and heating the hydantoin in aqueous mineral acid to produce racemic a -methyl-3,4-dihydroxy phenylalanine. The racemic mixture may be resolved into its optically-active components by conventional means.  Alternatively if methyl-3,4-methylene-dioxybenzyl ketone is used as starting material the corresponding hydantoin is produced and heated with an aqueous solution of barium hydroxide to give a -methyl-3,4-methylene-dioxyphenylalanine which is treated with red phosphorus and hydrogen iodide to give the racemic 3,4-dihydroxyphenylalanine.
Patent GB-1055697-A (GB)
Title: Ventilated shoe
IPC: A43B7/06
Filed: 1964-10-27
Abstract: 1,055,697. Ventilating shoes. T. SISMAN SHOE CO Ltd. Oct. 27, 1964 [Nov. 2, 1963], No. 43870/64. Heading A3B. A ventilated shoe comprises an outsole, midsole, and an interior liner of resilient compressible cushioning material, with a plurality of slots extending transversely from at least one edge of the shoe and between the outsole and midsole, and communicating with holes extending downwardly through the midsole, and a plurality of spaced small holes extending downwardly through the liner and registering with several of the holes in the midsole. As described the shoe has an outsole 1 of rubber or leather, a midsole 3, and an insole 4 comprising layers 4b, 4c, and 4d respectively of reconstituted leather, latex foam, and English Kip. The three soles are cemented together, with the edge of the upper cemented between the midsole and insole. The midsole has a plurality of spaced circular holes 3b each of which intercepts more than one of a plurality of narrow, closely spaced, transversely extending slots 3a formed in the undersurface of the midsole. The insole has a plurality of spaced circular holes 4a several of which register with each hole 3b. Compression and expansion of the cushion layer 4c by the foot of the wearer causes flow of air through holes 4a and 3b and slots 3a at the formpart of the shoe. Holes 3b are not located directly below the ball of the foot and preferably are spaced inwardly from the edges of the midsole so as to prevent cement from blocking slots 3a. The upper can be secured above the midsole by a Goodyear welt or stitch down construction.
Patent GB-1196123-A (GB)
Title: Improvements in or relating to Container Closures provided with Sealing Gaskets
Inventor: BODSWORTH PETER REGINALD
IPC: C08L53/00
Filed: 1966-09-30
Abstract: 1,196,123. Container closures. W. R. GRACE & CO. 28 Sept., 1967 [30 Sept., 1966], No. 43875/66. Heading B8T. A metal closure for a glass bottle or other container has a sealing gasket of synthetic plastics material formed with a thin flat central disc and an annular ridge with sloping side walls. A peripheral portion of the gasket engaging the side wall of the closure may also be raised. The ridge may have a step radially inwards of its apex, Fig. 2 (not shown); its radially inward slope may be convex and its radially outward slope plane; Fig. 3 (not shown); or it may be of hemispherical crosssection, Fig. 4 (not shown). The closure is screw-threaded either before or after being applied to a bottle neck. The gasket is designed to provide high resistance to internal pressure, but to allow the closure to be easily removed.
Patent GB-1587965-A (GB)
Title: Manufacture of dichloronitroanilines
IPC: C07C/
Filed: 1977-10-21
Abstract: 2,6-Dichloro-4-nitroaniline and 2,4-dichloro-6-nitroaniline are prepared by reacting 2- or 4-nitroaniline with hypochlorites in the presence of a strong acid. An alkali metal hypochlorite or alkaline earth metal hypochlorite is used in an amount of from 1 to 1.2 equivalents per mole of nitroaniline. A temperature of above 25 DEG C is used. The concentration of the strong acid is from 5 to 400% by weight of anhydrous acid, based on the weight of added water. This process gives dichloronitroaniline on an industrial scale in good yield and purity.
Patent GB-1434547-A (GB)
Title: Fibres and spinning solutions therefor
IPC: C08G73/08
Filed: 1973-09-19
Abstract: 1434547 Polyhydrazide filaments MONSANTO CO 19 Sept 1973 [20 Sept 1972] 43901/73 Heading B5B [Also in Division C3] Fibres are spun from a polymer comprising recurring structural units of which more than 90 mol. per cent are of the formula and the remaining units are of the formula wherein R is or -NH-Ar<SP>1</SP>-NH- or a mixture thereof, each Ar and Ar<SP>1</SP> is a divalent aromatic radical, the chain extending covalent bonds of which are oriented meta or para with respect to one another, and X is a covalent bond or a divalent aromatic radical with the proviso that when Ar is a paraphenylene radical X is a divalent aromatic radical. In an example a polymer is obtained in solution by reacting oxalic dihydrazide with terephthaloyl chloride and filaments are spun from the polymer solution, the filaments are then wound up in a DMAr<SP>-</SP>/H 2 O washing bath at a speed such that the filaments relax, then stretched in a bath at 90 C. and then washed.
Patent GB-925065-A (GB)
Title: Method of making tin plate
Inventor: HIGGS RICHARD FRANKLIN
IPC: C25D5/50
Filed: 1961-12-07
Abstract: 925,065. Thermal treatment of tin plate. UNITED STATES STEEL CORPORATION. Dec. 7, 1961, No. 43902/61. Class 41. Electro-tinned low-carbon steel strip is heated, during forward travel after tinning, to a temperature above the melting-point of tin to form a limited amount of tin-iron alloy determined by quenching the strip to a temperature substantially below said melting-point to arrest further alloy formation; the strip is then again heated during further travel to a temperature above said melting-point to form further additional tin-iron alloy followed by quenching to atmospheric temperature. The first thermal treatment causes iron-tin alloy to form at scattered points on the surface of the strip whereas the second thermal treatment causes said alloy to form at further scattered points other than said first-mentioned points, whereby the resulting tin-plate has a more nearly uniform distribution of iron-tin alloy over the surface thereof. The first heating is controlled to cause the formation of alloy containing 0.03-0.06 1b./bb. of tin and the second heating is controlled to produce a total alloy containing 0.06-0.12 1b./bb. of tin. Tin-plate strip 10 runs over guide rollers 11, 12, 13 and 14. The first heating unit is positioned in the strip path between rollers 12 and 13 and is preferably a high-frequency inductive heating coil; this is followed by quench means 16. The portion of the strip between guide rollers 12 and 14 is heated by the electrical resistance of the strip from current supplied via connections 17. Typically the inductor coil heats the strip to abut 500‹ F. at a position between rollers 12 and 13 which temperature is reduced to about 200 ‹ F. by prompt quenching; and just before entry into the water quench bath 18 a temperature of about 550‹ F. is achieved by resistor heating.