baber/WOPTO huggingface dataset:
Patent GB-839239-A (GB)
Title: Reaction products of bis(2:3-epoxycyclopentyl) ether with a polycarboxylic acid anhydride and a polyol
IPC: C08G59/42
Filed: 1957-12-18
Abstract: Resins are made by reacting a mixture of bis-(2 : 3-epoxycyclopentyl) ether, a polycarboxylic acid anhydride and a polyhydric compound. Reaction is generally effected at 50-250 DEG  C. in the presence of a basic or acid catalyst, e.g. an alkali metal hydroxide, a quaternary ammonium compound, an amine, a mineral acid, a sulphonic acid, or a metal halide Lewis acid or a complex thereof.  Specified anhydrides are succinic, glutaric, propylsuccinic, methylbutylsuccinic, hexylsuccinic, heptylsuccinic, pentenylsuccinic, octenylsuccinic, nonenylsuccinic, alpha-beta-diethylsuccinic, maleic, chloromaleic, dichloromaleic, itaconic, citraconic, hexahydrophthalic, hexachlorophthalic, tetrahydrophthalic, methyltetrahydrophthalic, tetrachlorophthalic, chlorendic, tetrabromophthalic, tetraiodophthalic, phthalic, 4 - nitrophthalic, 1,2-naphthalic, 1,8 - naphthalic, 2,3 - naphthalic, 1,2,4,5 - benzenetetracarboxylic, polyadipic, polypimelic, polysebacic, polyhexahydroisophthalic, polyterephthalic, or polyisophthalic anhydrides.  Specified polyhydric compounds are ethylene glycol, diethylene glycol, polyethylene glycols, propylene glycol, tripropylene glycol, polypropylene glycols, polyethylenepropylene glycols, trimethylene glycol, butanediols, pentanediols, 2 - ethyl - 1,3 - hexanediol, 2-methyl-2,4 - pentanediol, 12,13 - tetracosanediol, 2 - butene - 1,4 - diol, 2 - methoxymethyl - 2,4-dimethyl - 1,5 - pentanediol, diethanolamine, triethanolamine, glycerol, polyglycerols, pentaerythritol, sorbitol, 1,2,6 - hexametriol, polyvinyl alcohols, cyclohexandediols, cyclopentanediols, inositol, trimethylol phenol, allyl-2,4,6-trimethylol phenyl ether, dihydroxytoluene, resorcinol, bis - (4 - hydroxyphenyl) - 2,21 - propane, bis - (4 - hydroxyphenyl) methane and a p-tertiarybutylphenol formaldehyde condensate.  The resins are useful in the manufacture of bondings, laminates, mouldings and castings.  Examples describe the manufacture of resins by heating together bis-(2,3-epoxycyclopentyl) ether and (1)-(29) maleic anhydride and ethylene glycol (30) maleic anhydride and polyethylene glycol (M.W. 400) (31) chlorendic anhydride and polyethylene glycol (M.W.400) (32) phthalic anhydride and polyethylene glycol (M.W.200) (33) methyltetrahydrophthalic anhydride and polyethylene glycol (M.W. 400) (34) maleic anhydride and glycerol (35) polyadipic anhydride and glycerol (36) succinic anhydride and glycerol (37)-(42) phthalic anhydride and polyethylene glycol (M.W. 200) (43) maleic anhydride and a condensate of p-tertiarybutylphenol and formaldehyde (M.W. 798) (44) phthalic anhydride and trimethylol phenol (45) succinic anhydride and resorcinol (46) chlorendic anhydride and bisphenol A (47)-(48) phthalic anhydride and 1,2,6-hexanetriol (49) maleic anhydride and allyl 2,4,6-trimethylolphenyl ether (50) maleic anhydride and ethylene glycol.  Specifications 839,238 and 839,240 are referred to.
Patent GB-1478875-A (GB)
Title: Electron beam recording media
IPC: H01L21/027
Filed: 1974-09-10
Abstract: 1478875 Electron-sensitive materials RCA CORPORATION 10 Sept 1974 [27 Sept 1973] 39373/74 Heading G2C [Also in Division C3] Electron beam recording materials comprise a layer of a copolymer of sulphur dioxide and an olefinically unsaturated compound coated on a support having an electrically conductive layer, e.g. metal, in contact with the layer. The copolymer may be derived from butenes, dodecene-1, 2-methylpentene-1, cyclopentene, cyclohexene, allyl benzene, 2-butene-1,-ol, 1-propene- 3-ol, bicyclo-[2.2.1] hept-2-ene-5-methanol, allyl glycidyl ether or isopropenyl thiophene. The substrate may be polyester tape or glass coated with a conductive layer of tin oxide, indium oxide, copper, nickel, aluminium or chromium. Depending on the copolymer, positive images may be formed directly by depolymerization or after development with a solvent, e.g. acetone, methyl ethyl ketone, ethanol, isopropanol, diisobutyl ketone, cyclohexanone, tetra-chloroethane, hexane, dimethyl formamide, acetonitrile, 2- methoxyethyl acetate, methanol and mixtures thereof to remove the exposed areas.
Patent GB-1444713-A (GB)
Title: Method for filling containers with liquids
IPC: B65B7/06
Filed: 1972-08-24
Abstract: 1444713 Packaging liquids; liquid container; pouches for liquids IMPERIAL CHEMICAL INDUSTRIES Ltd 26 July 1973 [24 Aug 1972] 39412/72 Heading B8C A method of filling a container which is formed from a length of flexible tubular plastics film 1 sealed at one end, comprises clamping the open end of the container in gastight relation with a filling nozzle 8, introducing a gas under superatmospheric pressure and a predetermined quantity of a liquid into the container through the nozzle 8, and transversely clamping the plastics film above the level of the liquid and below the nozzle to produce a temporary gas-tight seal before the nozzle is withdrawn and while the open end of the container is sealed. When the liquid is a carbonated beverage, such as beer, supplied from a reservoir, the container is pressurized with carbon dioxide to a pressure substantially the same as the pressure upon the beverage in the reservoir before the beverage is introduced. The beverage is chilled to 5‹C before being packed. The container may be sealed at one or both ends by flattening the or each end of the tubular film and transversely folding the flattened end through 180 degrees around a rod (3) Fig. 2 (not shown), and then crimping a strip (4) Fig. 2 (not shown), of malleable material onto the folded film and the rod (3); U.K. Specification 1,444,714 referred to. The ends may also be sealed as described in Specifications 1,251,672 and 1,302,450. After the container has been filled and sealed, the cylindrical body portion thereof is wrapped with paper to form a support sleeve (6) Fig. 1 (not shown), which provides a medium for labelling; Specification 1,386,412 referred to. The ends of the container not protected by the sleeve (6) are reinforced by strips (2) Fig. 1 (not shown) adhered externally to the surface of the tubular film 1. The container may include an opening port in at least one of the two faces at one end of the container, the or each port being sealed by a removably adhered gas-tight patch; U.K. Specification 1,370,803 referred to.
Patent GB-838161-A (GB)
Title: Improvements in and relating to industrial furnaces
IPC: F27D1/00
Filed: 1957-12-19
Abstract: 838,161. Coke-oven bracings. SIMONCARVES Ltd. (Otto & Co. G.m.b.H., Dr. C.) Dec. 19, 1957, No. 39448/57. Class 51 (2). Tie rods 21 extending across a coke oven battery with their outer ends passing through pressure plates 20 engaging buckstays 19, have said ends formed with serrations 22 engaged by the similar shaped inner surfaces of cheeks 23 forming part of a restraining element. The cheeks 23 are held against the rods 21 by springs 25 extending between bolts 30 having regulating nuts 31, and cup springs 24 are disposed between the cheeks 23 and the pressure plates 20. As the coke oven brickwork expands outwardly, pressure is exerted on the cheeks 23, which is first resisted due to the variable tension of the springs 25 and is finally partially relieved by the cheeks 23 moving back over one serration 22. In a modification, Figs. 5 and 6 (not shown), the cheeks 23 are held in a frame and subject to the pressure of plate springs engaged by screws in said frame. A further modification, Figs. 7 and 8 (not shown), has semi-cylindrical cheeks held by an annular split spring. In a final modification, Figs. 9 and 10 (not shown), the ends of the tie rods comprise a saw-tooth thread engaged by a hexagonal nut in the form of a split ring providing the restraining element.
Patent GB-816082-A (GB)
Title: Electron tube
IPC: H01J21/02
Filed: 1956-12-28
Abstract: 816,082. Thermionic-cathode tubes. EITELMcCULLOUGH Inc. Dec. 28, 1956 [Feb. 23, 1956], No. 39457/56. Class 39(1). A discharge tube has a pin 19 sealed through an insulating header, the pin acting as both terminal and support for a cathode unit 23 which comprises a hollow cylinder having end walls; part of the sidewall 24, 26 is provided with a heat dam, e.g. by insertion of a section 25 of higher resistance; the side-wall near one end forms the emissive portion, the other end 27 being mounted on pin 19. The tube has an external anode 4 provided with cooling fins or channels 12,13,14. Theanode is extended downwardly, as at 33, to shield the seal between envelope parts 3 and 10 from heat and electron bombardment. A further shielding ring 34 is supported from a flange 35 secured between the metal rings 6 and 7 which join the header 2 to envelope part 3. These rings form a terminal for the shield 34, which can be given a low voltage so that the shielding elements 33, 34 act in addition as an electrostatic trap.
Patent GB-1404427-A (GB)
Title: Prosthetic devices
IPC: A61F2/66
Filed: 1973-08-22
Abstract: 1404427 Artificial legs A L WEBER and L J WATKINS 22 Aug 1973 [30 Aug 1972] 39684/73 Heading A5R A pivot joint (10), Fig. 1, (not shown) for an artificial leg (12) comprises a bearing 18, first and second spaced apart joint segments 20, 22 abutting the bearing 18 which is located in a recess 24 in one segment 22, means for connecting the joint segments 20, 22 for movement relative to one another and a resilient sleeve 40 clamped around the joint segments 20, 22 by clamps 42, 44 for restoring the joint segments to a predetermined relationship following the application of a torsional force. The joint (10) connects leg portions 14, 16 so that it can absorb torsional forces without straining the stump of an amputee. The segments 20, 22 are. joined to the leg portions 14, 16 by pins 52 in holes 50, 54 in the segments 20, 22 and the leg portions 14, 16 respectively. The pins 52 may be secured by set screws in bores 56. Alternatively, a leg portion (62), Fig. 5, (not shown) has a tubular part 74 which fits in the recess 28 and is clamped therein by a jam nut (76), Fig. 6 (not shown) around a grooved end wall (72) of a joint segment (68), or by a clamp such as the clamps 42, 44. The joint segments 20, 22 may be joined by a nut and bolt connection.
Patent GB-1294331-A (GB)
Title: Bearing
IPC: F16H25/24
Filed: 1969-08-13
Abstract: 1294331 Hydrostatic bearings; gearing elements P KONINGS MACHINEFABRIEK IJZER-EN METAALGIETERIJ NV 13 Aug 1969 [13 Aug 1968 16 Nov 1968] 40195/69 Headings F2A and F2Q  A screw and nut assembly has hydrostatic bearings formed between engaging surfaces, the hydrostatic bearings having liquid lubricant supplied to a region between the bearing surfaces 105 via duct 106 and led away via ducts 112 between the supply ducts and via ducts 119 at each end of the lubricated region of the assembly, escape of lubricant being prevented by providing means for maintaining pneumatic pressure around the lubricant region. The pneumatic pressure is created by supplying compressed air via ducts 117, the pressure of the air being greater than the pressure of the lubricant adjacent the return duct 119. The assembly may be cooled by fluid flowing through passages (127, Fig. 2, not shown) in the nut.
Patent GB-835687-A (GB)
Title: Improvements in and relating to apparatus for spreading pulverized or granular fertilizers
IPC: A01C15/00
Filed: 1958-12-15
Abstract: 835,687. Fertilizer distributers. LANDBOUWWERKTUIGEN. - EN MACHINEFABRIEK H. VISSERS N.V. Dec. 15, 1958 [Dec. 28, 1957], No. 40276/58. Class 6(1). A machine for spreading fertilizer comprising a bowl 5 arranged below a hopper 1 and provided with a spout 6 extending rearwardly and provided with openings in its side walls and end face is characterized in that the passage area of the openings in one side of the vertical longitudinal central plane of the spout is greater than at the other side of the plane. As shown side slots 7 are provided and one side is formed with an extra opening 7a. A member 14 is mounted in the end face of the spout and is arranged eccentrically to the centre of the spout. The bowl and spout are angularly reciprocated in a transverse direction by means of a crank 10 connected by a rod 12 to a lever 13 mounted on a shaft 3 on which the bowl 5 is mounted.
Patent GB-1436909-A (GB)
Title: Ink jet printing method and apparatus
IPC: H04N1/23
Filed: 1974-09-17
Abstract: 1436909 Ink-drop printers INTERNATIONAL BUSINESS MACHINES CORP 17 Sept 1974 [3 Oct 1973] 40375/74 Heading G4H In an ink jet printer, ink drops are caused to merge in flight by charging some drops with data signals of one polarity and other drops with signals of the other polarity. Data signal voltages of one polarity are produced by a D/A converter, and its output and a relatively-small fixed base voltage of the other polarity are selectively gated through respective inputs of a differential amplifier to the drop charging electrode under control of logic actuated by 2-bit grey scale signals, the bit combinations 00, 01, 10, 11 causing charging such that respectively no drop reaches the document, one drop reaches it, two drops merge and reach it, three drops merge and reach it, thus controlling print density.
Patent GB-1516008-A (GB)
Title: Method for producing metallurgical coke
IPC: C10B53/08
Filed: 1976-09-29
Abstract: 1516008 Coke manufacture NIPPON KOKAN KK 29 Sept 1976 [23 Oct 1975] 40406/76 Heading C5E High strength metallurgical coke is prepared by cabonizing green composite briquettes formed by covering an inner core material comprising blended raw material coal fines having a maximum fluidity of 20 dial divisions per minute (d.d.p.m.-see ASTM D2639-74) with an outer envelope material comprising coal fines having a maximum fluidity of at least 30 d.d.p.m. and an A.P. index of at least 70% or bituminous material having a C/H ratio of from 0À7 to 1À9, and having a covering thickness of from 0À5 to 10 mm. The inner coal fines preferably have a particle size of at most 1À5 mm. Preferred bituminous materials for use as the outer envelope are coal tar, coal tar pitch, emulsified coal tar pitch, asphalt, asphalt debituminized by propane, asphalt heat-treated under a hydrogen atmosphere or emulsified asphalt. It is preferred to first form the inner core material by mixing the coal fines with a binder and forming the mixture into briquettes or pellets and then covering the surface of the inner core with the coal fines or dipping the inner core into the bituminous material which has been rendered liquid or spraying the liquefied bituminous material onto the surface of the inner core. Carbonization takes place in a conventional horizontal coke oven battery.
Patent GB-960683-A (GB)
Title: Improvements in or relating to waveguides
Inventor: SCHELISCH ERNST FRIEDRICH
IPC: H01P5/08
Filed: 1959-11-30
Abstract: 960,683. Electromagnetic waveguides. MARCONI CO. Ltd. June 14, 1960 [Nov. 30, 1959], No. 40577/59. Heading H1W. A waveguide coupling arrangement comprises two hollow circular sectioned waveguides 1 and 2 joined end to end and constructed to propagate therethrough radio energy in the H on  mode, the waveguide walls providing conductive paths parallel to the axes of the guides and each sharing a different impedance over the major part of its length, at least one of the guides, 1, having internal grooves la whose dimensions are varied in such manner that the minimum diameter of the guide over the grooved portion remains constant, thereby to provide a gradual transition of surface impedance from the value over the major part of the lengths of the guide to another value approaching that of the surface impedance of the other guides at the end thereof. The guides 1 and 2 are held together by a sleeve 4, the guide 2 in Fig. 1 being a helical guide 2a in a sheath 2b of synthetic material. In the construction shown in Figs. 1 and 3 the grooving la is in the form of internal ring triangular grooves, in a solid walled grade, which are of a depth and/or width which is increased from groove to groove towards the end of the guide or of a depth and/or width which is increased from group of grooves to group of grooves towards the end of the guide. Alternatively the grooving can be in the form of a screw thread of increasing depth and/or width towards the end of the guide. In the construction shown in Fig. 2 the guide 2 consists of a metal helix 2c whose turns are in contact contained in a sheath 2b of synthetic material, the metal helix being formed of metal wire or strip the cross-sectional dimensions of which are reduced, either gradually or in steps, over a length at one end of the guide. In the construction shown in Fig. 3 the flexible guide 2 is built up of metal rings 2d spaced by rings 2e of dielectric material. The desired gradual variation of surface impedance, which may be effected in a solid walled guide or a flexible guide, or in both, can be in accordance with a linear, binormal or exponential law.
Patent GB-1081419-A (GB)
Title: Improved vehicle wheel mounting assembly incorporating a disc brake
IPC: F16D55/2255
Filed: 1964-10-05
Abstract: 1,081,419. Disc brakes. REGIE NATIONALE DES USINES RENAULT. Oct. 5, 1964 [Oct. 8, 1963], No. 40586/64. Heading F2E. A spot-type vehicle disc brake comprises a floating calliper housing 1 movable relative to fixed vehicle part in the direction of disc axis and an anti-noise device 7 which is connected at one end to the calliper housing and at the other end to said fixed vehicle part, said device counteracting rocking motion of the calliper housing about an axis x, y parallel to the disc sides without materially preventing said floating movement in the direction of the disc axis. The housing is attached to a support bracket 2 by U-shaped links 3 pivoted at 5 and arranged to bear against the ends of the housing through deformable anti-noise elements 4. The bracket is connected to a wheel hub. The anti-noise device 7 comprises a spring steel plate connected at one end to two points 8 and 9 to the housing and at the other end by means of a stud 10 of the bracket 2 to the wheel hub. The fixing point 8 is a hand brake adjustment screw. In a modification, Fig. 3 (not shown), the lower end of the plate is slidably-mounted on a smooth-ended stud by a silent-block friction bush. This arrangement automatically compensates for wear on a friction pad located on the disc side remote from the actuating hydraulic cylinder in the housing but is unnecessary when actuating cylinders are on both sides of the disc. In another embodiment, Figs. 4 and 5 (not shown), the plate 7 is replaced by a piston/ cylinder damper (18) connected to anchoring points on the housing and hub by clevis pin connections.
Patent GB-1160249-A (GB)
Title: Photochemical Production of Printing Plates
IPC: G03F7/004
Filed: 1966-09-12
Abstract: 1,160,249. Production of photo-chemical printing plates. CORNING GLASS WORKS. Sept. 12, 1966 [Sept. 20, 1965], No.40689/66. Headings G2C and G2M. Printing plates are produced by exposing a photo-sensitive gloss panel to a negative using ultraviolet light, X-rays or radio-active radiations, heating the glass panel to opacify the exposed areas, removing the opacified areas by immersion in hydrofluoric acid to produce a negative intagtis, placing a mouldable material such as a thermoplastic or thermosetting, polymer or molten metal in contact with the enteglin under pressure and/or heat to produce the printing plate. Preferably the polymer used is rubber which forms the intaglas plate in contact with the glass intaglis using both heat and pressure.
Patent GB-907442-A (GB)
Title: Method of cooling or refrigerating solid foodstuffs material in refrigerating systems
IPC: A23L3/36
Filed: 1960-11-28
Abstract: 907,442. Cooling meat, berries or peas. CELLECO A.B. Nov. 28, 1960 [Dec. 9, 1959], No. 40750/60. Class 29. Foodstuffs in the form of fluidizable particles such as peas or berries are cooled in, and form part or all of, a fluidized bed 10 chilled by the evaporator 5 of a compression system as described in Specification 860,105.
Patent GB-1183115-A (GB)
Title: Improvements in Means for Shrouding Electrical Contacts
IPC: H01H85/25
Filed: 1967-09-07
Abstract: 1,183,115. Fusible cut-outs. ARCTIC FUSE & ELECTRICAL MFG. CO. Ltd. and F. A. ROSS. 26 Sept., 1968 [7 Sept., 1967], No. 40846/67. Heading H2G. The contacts B, B<SP>1</SP> of a fuse base are shrouded by means of insulating members C, C<SP>1</SP> which may be hinged together (as shown), or joined by a flexible portion (D, Fig. 3, not shown), so that ready access can be had to the contacts B, B<SP>1</SP>. A flap in the flexible connecting portion (D) may be provided to permit access to earthing screw F.
Patent GB-1438013-A (GB)
Title: Multi-channel recorders
IPC: G01D9/30
Filed: 1973-08-30
Abstract: 1438013 Automatic control CARDIAC RECORDERS Ltd 30 Oct 1974 [30 Aug 1973] 40930/73 Heading G3N [Also in Division G1] A recording pen is positioned by a linear motor controlled by a potentiometric feedback system incorporating a differential amplifier.
Patent GB-1161206-A (GB)
Title: Improvements relating to Frequency Synthesisers.
Inventor: HARRINGTON DAVID
IPC: H03L7/185
Filed: 1965-09-29
Abstract: 1,161,206. Automatic frequency control systems. PLESSEY CO. Ltd. 26 Sept., 1966 [29 Sept., 1965], No. 41307/65. Heading H3A. The output F o  of a controlled oscillator 1 is fed through a phase splitter 3 to a double bank binary divider 4 which provides two outputs at half the frequency and in phase quadrature to balanced modulators 5 and 6 which are also supplied with a modulating frequency Fm directly and through phase shifter 8; the outputs of the two modulators are combined to give either the sum or the difference frequency according to the phase shift arrangements, and fed through a filter to a variable frequency divider 10 and a phase comparator 11 supplied from a reference oscillator 12 and controlling the oscillator 1. It is shown that F 0  = 2(NFc Œ Fm), where N is the ratio of the divider 10 and Fc is the comparison frequency at the comparator 11. The system may be used in a frequency synthesizer and may be applied to a communications receiver which can be tuned to any arbitrary frequency to receive a single sideband transmission.