baber/WOPTO huggingface dataset:
Patent GB-1058236-A (GB)
Title: Polyisocyanates which contain imide groups
Inventor: MULLER GERHARD
IPC: C08G73/10
Filed: 1963-11-21
Abstract: Polyisocyanates containing at least two free NCO groups and at least one cyclic imide group are prepared by reacting, at a temperature of 50 DEG  to 200 DEG  C., a polyisocyanate with a cyclic anhydride containing either 2 or more groups of the formula <FORM:1058236/C2/1> or one group of this formula and at least one active hydrogen atom, the proportions being such that there is in the reaction mixture at least 1.1 NCO groups for each group of the formula given and for each active hydrogen atom, to give a product containing the group <FORM:1058236/C2/2> wherein R represents the residue of the polyisocyanate, apart from any NCO groups that may have reacted with cyclic anhydride groups or with active hydrogen atoms.  The products may be subsequently washed by known methods.ALSO:Polyisocyanates containing at least two free NCO groups and at least one cyclic imide group are prepared by reacting, at a temperature of 50 DEG  to 200 DEG  C., a polyisocyanate with a cyclic anhydride containing either 2 or more groups of the formula <FORM:1058236/C3/1> or one group of this formula and at least one active hydrogen atom, the proportions being such that there is in the reaction mixture at least 1.1 NCO groups for each group of the formula given and for each active hydrogen atom, to give a product containing the group <FORM:1058236/C3/2> wherein R represents the residue of the polyisocyanate, apart from any NCO groups that may have reacted with cyclic anhydride groups or with active hydrogen atoms.  The products may be subsequently masked by known methods.
Patent GB-1094062-A (GB)
Title: Frequency modulated oscillator
IPC: H03C3/24
Filed: 1964-11-12
Abstract: 1,094,062. Frequency modulation. RADIO CORPORATION OF AMERICA. Nov. 12, 1964 [Nov. 19, 1963], No. 46146/64. Reading H3R. A phase-shift oscillator comprises at least one transistor 14 whose input impedance is varied by a modulator transistor 75 to produce linear frequency modulation by a wideband modulating signal. The modulator transistor 75 varies through an RF choke in its collector circuit the bias on the emitter of NPN (opposite conductivity type) transistor 14 to which emitter the generated oscillator frequency is applied by an R-C coupling, output being taken from the collector of transistor 14 and applied through a capacitor 63 to the emitter of an NPN transistor 11 whose collector output is applied through a capacitor 26 to an emitter follower 12. This supplies an output lead and the base of a transistor 13 having R-C coupling to the emitter of transistor 14. The loop produces unity gain and 360 degree phase shift, and by adjusting coupling resistors and capacitors the centre frequency may be varied. Transistors 14, 75 may be of silicon and germanium respectively and arranged to compensate frequency drift with temperature, and the oscillator may also be enclosed in a temperature stabilized oven. The emitter circuits may be decoupled as shown. The inductor 25 offsets loss of gain at higher frequency ranges.
Patent GB-1201699-A (GB)
Title: Improvements in or relating to refillable pencils
Inventor: WITTROCK LUDWIG
IPC: B43K21/02
Filed: 1968-10-03
Abstract: 1,201,699. Pencils. L. WITTROCK. 3 Oct., 1968, No. 46982/68. Heading B6P. In a refillable pencil comprising a lead guide tube 4 which moves into a sleeve 1 as the lead 6 wears away, and a push member 2 which applies pressure to the lead, telescopic elements within the sleeve 1 support the push member to prevent buckling thereof. The arrangement is of particular use with thin leads requiring a corresponding thin push member 2. In one embodiment, Figs. 1, 2, in which a push rod 2 on the carrier sleeve 1 enters a bore 5 in the guide tube 4 to engage the end of a lead 6, the inner end of the tube 4 carries four radial vanes 8 spaced at their inner edges to engage and support the rod 2 along the space 3 between the closed end of the sleeve 1 and the tube 4. Similar vanes 9 positioned between the vanes 8 extend from the closed end of the sleeve 1 to provide additional support, the ends 9A of the vanes 9 extending beyond the rear ends of the vanes 8 when the sleeve 4 is fully projected. The friction between the vanes and the push rod and the inner wall of the sleeve 1 holds the tube 4 pressed against a writing surface. As the lead is used, the tube is moved inwardly. In a modified arrangement, Figs. 3-5 (not shown), vanes similar to vanes 8, 9 are fixed to the push rod and extend into radial slots in the tube 4. The vanes are of a thickness less than the slot width but have a wavy formation so as to engage the slots frictionally. According to another construction, Fig. 7, the pusher is in the form of a wavy blade 2A extending across a diameter of the sleeve 1 with its edges entering grooves 12 in the sleeve. A diametral slot 13 is provided in the guide tube 4 to receive the blade.
Patent GB-1220549-A (GB)
Title: Improvements in or relating to the backing of carpets
Inventor: AFFELDT HANS
IPC: D06N7/00
Filed: 1969-09-24
Abstract: 1,220,549. Laminates. DOVERSTRAND Ltd. 24 Sept., 1969 [25 Sept., 1968], No. 47109/69. Heading B5N. [Also in Division B2] A method of backing tufted or woven carpets comprises applying a first coat of a foamed latex to the back of the carpet using an applicator, e.g. doctor knife or licker roll, in contact therewith to force the foamed latex into the base of the carpet, applying a second coat of the same foamed latex to the desired depth before the first coat has dried, laminating to a fabric, e.g. by passing through the nip of a pair of rollers and treating the carpet to solidify the latex. The latex may be a natural or synthetic rubber latex, e.g. styrene-butadiene copolymers and their carboxylated derivatives. The latex may contain gelling and vulcanizing agents in addition to the usual additives. The backing fabric may be hessian, scrim, woven or non-woven textiles of natural or synthetic fibres.
Patent GB-1364719-A (GB)
Title: Method of producing inorganic pigments
IPC: C09C1/36
Filed: 1971-10-11
Abstract: 1364719 Precipitation of pigments, electromagnetic mixing NAUCHNO-ISSLEDOVATELSKY I KONSTRUKTORSKO-TEXHN OLDGIOHESKY INSTITUT EMALIROVANNOGO KHIMICHESKOGO OBORUDOVANIA 11 Oct 1973 [12 Oct 1970] 47158/71 Headings B1C and B1X [Also in Divisions C1 and C4] Pigments are precipitated from soln. in a vessel containing solid unequiaxial ferromagnetic particles intensively agitated by a rotating magnetic field produced by a polyphase winding system having a magnetic induction of at least 0.1 tesla, e.g. 0.15 tesla. The particles may be in the form of cylinders coated with polyethylene, PVC or chrome and have a diam. of 1.8 mm and a length of 13.6 mm. The rotational speed of the magnetic field may be 3,000 r.p.m.
Patent GB-1339654-A (GB)
Title: Subsea pipe laying apparatus
IPC: F16L1/20
Filed: 1971-10-12
Abstract: 1339654 Straightening pipes TEXACO DEVELOPMENT CORP 12 Oct 1971 [29 Oct 1970] 47380/71 Heading B3E [Also in Division F2] A pipe straightener 60 for a pipe laying barge (see Division F2) comprises opposed treads 52, 53 supported on three rollers per tread. The top and bottom rollers 54, 56 of the tread 52 may be urged against the pipe by jacks 67. The central rollers 65, 65<SP>1</SP> of both treads are movable in opposition to adjust the straightening action. The top and bottom rollers of tread 52 are fixed while the rollers of tread 52 are suspended from a load cell 67 to enable the force exerted by the pipe as it leaves the vessel to be measured.
Patent GB-1446757-A (GB)
Title: Fixed compoun-s frames for windows or doors
IPC: E06B1/34
Filed: 1973-10-11
Abstract: 1446757 Window and door frames ELTREVA AG 11 Oct 1973 [11 Oct 1972] 47438/73 Heading E1J A fixed compound frame comprises a unitary metal frame 1 mounted on holders 2 spaced around a wooden frame 3, the metal frame being additionally supported by a seal 9 at a position inwardly of the holders, and also directly against the holders on the side remote from the sash. The holders are of U- section, one limb having teeth 5 engaging an undercut arm 7 of the metal frame. Arm 11 on the metal frame abuts against extension 12 of the holder.
Patent GB-1377470-A (GB)
Title: Self-tapping screws
IPC: F16B25/10
Filed: 1973-10-12
Abstract: 1377470 Self-tapping screws RESEARCH ENG & MFG Inc 12 Oct 1973 [1 Nov 1972] 47774/73 Heading B3N A self-tapping screw comprises a shank having a threaded section 8 that forms a thread in a workpiece 32 opening, said threaded section having a central axis 12 and the thread being helically disposed about said axis and including a crest 28, and a lead section having helically disposed ribs 36 for extruding the workpiece opening for subsequent threading by the threaded section, the maximum radial distance from said axis 12 to the crests 38 of said ribs 36 being less than the maximum radial distance from said axis 12 to the crest 28 of the thread and the helical disposition of said ribs being opposite to the helical disposition of said thread whereby the ribs extrude a flange 44 at the workpiece opening in the direction of penetration of the screw into the workpiece. The screw may include a drill tip 40 for forming the workpiece opening. The lead section containing the ribs 36 may have an axis 62 eccentric to the screw central axis 12 so that the outside diameter of the rib crests 38 can be reduced to allow the screw to be removed from the workpiece. The cross-section of the screw threaded shank may be arcuate polygonal with e.g. three lobes. The ribs 36 may have a tapered outside diameter to assist lead-in.
Patent GB-1339466-A (GB)
Title: Electrooptocal display system
IPC: H01J17/49
Filed: 1971-10-14
Abstract: 1339466 Gas discharge display panels BURROUGHS CORP 14 Oct 1971 [28 Oct 1970] 47893/71 Heading H1D [Also in Divisions H3-H5] A display system comprises a discharge panel 10 including a plurality of individual gas-filled light producing cells 50 and including electrode means 30, 60 for firing the cells in a predetermined pattern, a message-carrying member 120 seated on said panel and including translucent and opaque portions 130 in a pattern representative of a message, and a plate 140 seated on said message-carrying member and adapted to receive light transmitted through said member, said plate including means for generating light and transmitting it laterally to the edges thereof. The latter means may be particles of fluorescent material incorporated in the plate. Alternatively a layer of fluorescent material may be provided between the plate 140 and the member 120. The cells 50 are connected in a scanning raster by seats 70 and 80. The panel 10 has a glass cover-plate 90. The member 120 may be a plastics sheet on which the message 130 is written with a grease pencil. The opaque message prevents light from some cells reaching the plate 140, which condition is represented by signals picked up and transmitted by one or more photo-cells located adjacent an edge of the plate 140. These signals can be used to reconstitute the message 130 at a remote location. In an alternative arrangement (Fig. 5, not shown) suitable for use in a comparator system, the message is in code form, e.g. dots, and plate 140 is divided into a number of strips each with an associated photo-cell.
Patent GB-1082848-A (GB)
Title: Portable rotary machining apparatus
IPC: B23B45/14
Filed: 1964-11-26
Abstract: 1,082,848. Machine tool details. LAMINA Inc. Nov. 26, 1964 [Dec. 3, 19631, No. 48079/64. Headings B3B, B3C, B3K and B3N. [Also in Division- F1] A drilling, reaming, tapping, spot facing, chamfering, or milling machine comprises a drill head 12, Fig. 1, having a pillar 82, Fig. 2, which can be secured to a workpiece W by an electromagnet 94, a drill slide 84 slidable on the pillar, an hydraulic motor 18 for rotating the drill 88, and a control unit 14 supported on wheels. A storage battery 76 is mounted in unit 14 and is connected to the electromagnet by a cable 54, and a control switch 110. Slide 84 is movable on pillar 82 by a rock and pinion 126, 172, Fig. 2, which pinion is rotated by a wrench 170, Fig. 4 (not shown). A pivoting plate 142, Fig. 1, is secured to the base 90 of pillar 82, and carries a pin 144, Fig. 2. for locating head 12 in the required position on the work. Hydraulic motor 18, Fig. 14, comprises a stator disc 190 having a five-lobed bore 200, which co-operates with a four-lobed rotor 206. The rotor is splined to an oscillating and rotating shaft 224, Fig. 9, which is also splined into a fluid distribution head (232) on the end of an output shaft 234. Annular fluid pressure and exhaust channels 248, 264 are separated by a cylindrical portion 266, having downwardly directed ducts 268, and upwardly directed ducts 270. Registering with the ducts in timed succession during rotation are five equally circumferentially spaced radial ports 272, which open into vertical passages 274 connected to pockets 202 in stator disc 190. In operation, drill head 12 is placed in a cavity C on workpiece W, is located by pin 144 and is clamped by energizing electromagnet 94. Motor 56 is energized to drive a pump 38 to deliver pressure fluid to supply lines 286, 302, Fig. 16. A switch 51 at a remote control station, Fig. 1, is actuated to energize a solenoid 298, Fig. 16, and a pilot valve 36 is shifted to supply fluid to a servo cylinder 290. A main control valve 34 is shifted, and fluid is supplied through conduit 286 and hoses 26, 20, Fig. 1, to motor 18, the fluid being exhausted from the motor through hoses 22, 28 and valve 34, into tank 44. The motor is thus rotated to drive drill 88, and the latter is moved into the work by wrench 170. Fluid enters channel 248 in motor 18, Fig. 10, through parts 252, 250, and passes through ducts 268 into such parts 272 as are in registry therewith, Fig. 13. The fluid passes from the ports through passages 274 into pockets 202 in stator disc 190, and rotates rotor 206. At the same time, some of the ports 272 are in registry with ducts 270 opening into channel 264, which in turn communicates with passages 206, 260, and exhaust port 258. As rotor 206 rotates, it imparts rotary motion to shaft 224, and due to the orbital path of the shaft, motion is transmitted at a reduced speed to output shaft 234.
Patent GB-991338-A (GB)
Title: Production of hydrogen peroxide
IPC: C01B15/023
Filed: 1962-12-28
Abstract: Hydrogen peroxide is produced from anthraquinone by the cyclic reduction-oxidation process employing a working solution solvent comprising (a) at least one ketone in which each radical attached to the carbonyl group contains at least two carbon atoms, (b) an aliphatic ester of a cyclohexanol and/or of an alkyl cyclohexanol and (c) at least one hydrocarbon or hydrocarbon mixture.  The ketone is desirably a dialkyl ketone, e.g. diethyl-, di-isopropyl- or di-isobutyl-ketone.  The ester is preferably methyl cyclohexanol acetate, or an ester of a monocarboxylic acid having up to five carbon atoms.  Advantageously, the hydrocarbon is benzene or is a mixture of aromatic and olefinic hydrocarbons. The constituents (a), (b) and (c) are preferably present in volume ratios of 40 : 35 : 25 to 70 : 5 : 25, especially 50 : 25 : 25. Also, constituents (a) and (b) may be present jointly in an amount, by volume, equal to constituent (c).  The reduction step in the cyclic process may be conducted by means of hydrogen in the presence of catalysts prepared according to Specifications 746,385 and 760,737. The term "anthraquinone" includes substituted anthraquinones, e.g. 2-ethyl anthraquinone and substituted nuclearly hydrogenated anthraquinones, e.g. 2-ethyl tetrahydroanthraquinone.  Reference has been directed by the Comptroller to Specifications 695,776, 746,385, 747,190, 758,235 and 760,737.
Patent GB-1459391-A (GB)
Title: Gaming machines games of skill
IPC: G06F19/00
Filed: 1973-02-24
Abstract: 1459391 Gaming machines GRAZEBROOK VINT LABORATORIES Ltd 22 Feb 1974 [24 Feb 1973] 48836/72 Heading A6H [Also in Division G4] A machine for simulating the playing of a game of snap, comprises means for simultaneously displaying a symbol selected from one series of symbols and a symbol selected from a second series of symbols, means operable by a player to indicate an observed concurrence or relationship between the symbols, selected from said respective series of symbols, means in the machine for indicating when a concurrence has not been indicated before the occurence of another event. In one embodiment a human player plays against the machine. Then during a game the machine rapidly recognises the matching of the two top cards of two stacks and starts a delaying device. A decision circuit decides whether the man player has signalled 'snap' before the machine player's 'snap'. Preferably the machine players' snap is audible or visual. The cards are represented by codes held in cells of an electronic or mechanical memory. Means are provided to display the top cards of the machines' and players' stacks. The cards displayed may be pictures, diagrams or characters which may be used for advertising purposes in addition to their use in the game. Two identical sets of codes representing packs of the cards are held in the machine and are pseudorandomly dealt to the players before the game begins. Advantageously, one more card is dealt to the man player to reduce the possibility of games being interminable. This condition can be avoided by a device that counts the number of cards placed since the last "snap" and, after a predetermined number it causes the machine player to make a mistaken "snap" on the next occasion there is only one card on its stack. This card it taken automatically by the player. A further preferable device controls the period of the delaying device. This consists of a register which accummulates a preset number of positive points for a man player's game win and substracts a preset number of points for a machine player's win. The accummulated score of points in the register is used to control the period of the delay. This controls the rate of winning games against the machine to a predetermined rate. The man players snap may be by a push button switch or an audio arrangement. Conveniently the controlling part of the machine can provide signals for operating a mechanism for dispensing goods or money soon after a coin is inserted and/or when the game has been won. A device is preferably provided to indicate the size of the players hand plus the size of his stack. Preferably the size of each players hand is 9 for the man and 8 for the machine. Advantageously different sets of cards can be displayed from game to game. In an alternative form of the game machine, the machine player is replaced by a second button and modified decision device so that two men players can compete. Alternatively, the decision device can be extended to enable more than two players to compete.
Patent GB-1068832-A (GB)
Title: Improvements in the treatment of polyester shaped articles
Inventor: SHEARD DENNIS RICHARD
IPC: D06M13/152
Filed: 1962-12-28
Abstract: Fibres, filaments and fabrics made from synthetic polyesters, e.g. polyethylene terephthalate and polymethyl methacrylate, are rendered antistatic more easily cleaned, hydrophilic or water repellent by treating them with a liquid organic substance of molecular weight greater than 120 which contains at least one weakly ionisable hydrogen atom such that it has a pK value of 9.5-24, contains no hydrogen atom having a pK value of less than 9.5 and is capable of generating an anion which is stable and soluble in the organic substance and which has been partially converted into its anion base by reaction with an alkali metal or alkaline earth metal or with a strong base derived therefrom, so that the organic substance is attached through ester or amide linkages to the polyester material. The organic compound may be formed by the polymerisation of ethylene oxide, propylene oxide or mixtures thereof or it may be cetyl alcohol or a condensate of ethylene oxide or propylene oxide with an alkyl, aryl or alkyl arylalcohol, phenol, amide, imide, amine or poly functional alcohol.  Fabrics comprising polyester fibres in admixture with cotton may be treated.ALSO:Films and fabrics made from synthetic polyesters, e.g polyethylene terephthalate and polymethyl methacrylate, are rendered antistatic and more easily cleaned and their water absorption properties are modified by treating them with a liquid organic substance of molecular weight greater than 120 which contains at least one weakly ionisable hydrogen atom such that it has a pK value of 9.5-24, contains no hydrogen atom having a pK value of less than 9.5 and is capable of generating an anion which is stable and soluble in the organic substance and which has been partially converted into its anion base by reaction with an alkali metal or alkaline earth metal or with a strong base derived therefrom so that the organic substance is attached through ester or amide linkages to the polyester material.  The organic compound may be formed by the polymerisation of ethylene oxide, propylene oxide or mixtures thereof or it may be cetyl alcohol or a condensate of ethylene oxide or propylene oxide with an alkyl, aryl or alkyl arylalcohol, phenol, amide, imide, amine or poly functional alcohol.  Fabrics comprising polyester fibres in admixture with cotton may be treated.  Treated films show improved adhesion to subsequent coatings of polyacrylic acid.
Patent GB-1433940-A (GB)
Title: Process for increasing service life of powder metallurgical  hard metal products
IPC: C23C8/48
Filed: 1973-10-22
Abstract: 1433940 Nitriding sintered carbides MAGYAR VAGON-ES GEPGYAR 22 Oct 1973 [14 Nov 1972] 49006/73 Heading C7U Sintered components of one or more saturated carbides in a metallic binder are subjected to a nitrogen source at elevated temperature whereby the surface takes up nitrogen to a depth measured in microns. The treatment may be carried out in gaseous ammonia at 500-600‹C for 30-80 minutes or in a molten bath of sodium/potassium cyanide and cyanate at 500-600‹C for 10-30 minutes. The process is applied particularly to hard metal cutting tips.
Patent GB-1406823-A (GB)
Title: Condensation apparatus for steam turbine power plants
IPC: F28C1/14
Filed: 1972-10-25
Abstract: 1406823 Steam condensor TYEPLOELEKTROPROJEKT and ENERGIAGAZDALKODASI INTEZET 25 Oct 1972 [25 Oct 1971] 49210/72 Heading B1B [Also in Division F4] The invention relates to condensing apparatus for steam from turbine 1 in a steam turbine power station, in which apparatus the steam is condensed by direct contact with water in spray condenser 2, the condensate passing through the tubular surface heat exchangers 4, Fig. 2, disposed in an air inlet passage of cooling tower 8, which heat exchangers have vertical fins disposed radially of or at an angle to the radius of the cooling tower 8, Fig. 3, the cooling of heat exchangers 4 being effected by air and water, the water collecting in trough 6 and being recycled to spray tube 5. To provide a spiral or helical motion to the air flowing into the cooling tower 8, baffles 19, Fig. 3 may be provided, or the condensers arranged with walls 26, Fig. 4.