baber/WOPTO huggingface dataset:
Patent GB-782056-A (GB)
Title: Ion-exchange membranes and method of preparing same
IPC: C08J5/22
Filed: 1954-12-22
Abstract: A heterogeneous ion-exchange membrane of increased electrical conductivity and containing 30 to 80 per cent by weight of a finely divided, water-insoluble ion exchange material substantially uniformly distributed throughout an electrolytically non-conductive bonding plastic matrix, is prepared by treating the membrane with a reactant that is effective to form dissociable exchange groups of the same ionic sign as that of the ion-exchange material on surfaces and interfaces of the membrane by reaction with the plastic of the matrix.  The ion-exchange material may be a naturally occurring one such as the zeolites or glauconite or a synthetic resin such as melamine-guanidine formaldehyde, urea-guanidine formaldehyde, an aminated chloralkylated copolymer of a monovinyl and divinyl aromatic hydrocarbon, caustic-oxidized cellulosic material impregnated with a protamine sulphite, a phenol sulphonic acid formaldehyde resin, a mineral acid treated polystyrene and a carboxylic acid treated polystyrene in the hydrogen form. Reactions specified are: (1) treating a polystyrene matrix containing a cation-exchange resin with fuming sulphuric or chlorsulphonic acid; (2) heating a polymethyl methacrylate matrix containing a cation-exchange resin in alcoholic potash to form a polyacrylic acid; (3) treating a polystyrene matrix containing an anion exchange resin with nitric acid or a mixture of nitric and sulphuric acids and then reducing the nitro groups formed to amine groups; (4) treating a polystyrene matrix containing an anion-exchange material with a polyhalo hydrocarbon such as perchloroethylene and then a halo methylating agent such as chloromethyl ether in the presence of a catalyst such as zinc chloride, and then treating with dimethyl ethanolamine to form amine groups; (5) polystyrene bonded anion-exchange resins may be treated with a mixture of paraformaldehyde and hydrochloric acid, a dihaloalkane and aluminium chloride, or a halo-ether and aluminium chloride to halo-alkylate the membrane, which is then reacted with an amine.  U.S.A. Specification 2,614,976 is referred to.
Patent GB-1005874-A (GB)
Title: Water-insoluble disazo-dyestuffs containing trifluoromethyl groups and process for their manufacture
IPC: C09B35/18
Filed: 1961-10-16
Abstract: The invention comprises water-insoluble disazo-dyes which correspond to the general formula <FORM:1005874/C4-C5/1> in which X represents a hydrogen or halogen atom or an alkyl or alkoxy group, Y represents a hydrogen or halogen atom and R represents a radical of the benzene or naphthalene series which may contain substituents other than sulphonic or carboxylic acid groups and a process for the preparation thereof wherein a tetrazonium compound of a diamine of the general formula <FORM:1005874/C4-C5/2> where X and Y have the meanings given above is coupled in substance or on a substratum with an appropriate pyrazolone derivative.  Examples are furnished.  Substrata employed in examples include chalk and aqueous aluminum hydroxide. Some products are prepared in the presence of emulsifiers such as resin soap and the reaction product of oleyl alcohol and ethylene oxide. The products are suitable for colouring lacquers, artificial resins, textiles and paper.
Patent GB-1085609-A (GB)
Title: Intravenous catheters
Inventor: HIRSCH SIDNEY
IPC: A61M25/06
Filed: 1966-08-19
Abstract: 1,085,609. Intravenous catheters. DESERET PHARMACEUTICAL CO. Inc. Aug. 19, 1966, No. 37191/66. Heading ASR. An intravenous catheter comprises a catheter tube 5 having a socket 7 at one end and a removable stylet 2 having a handle element 14 removably seated in the socket, the internal diameter of the catheter tube being greater than the external diameter of the stylet, except at the leading end where the tube is of reduced diameter and engages the stylet, and the stylet extending beyond the end of the catheter tube when the handle element is seated in the socket. The stylet is a hollow tube which communicates with a chamber 17 in the handle element or is a rod with a longitudinal flat (31) or longitudinal slot (34) which permits passage of blood between the stylet and the catheter tube to a chamber 10 in the socket 7. The parts of the catheter are transparent or translucent so that fluid flowing into them is visible. A plug 4 fitted in the handle element 14 may be transferred to the socket 7 if the catheter tube is left in the body out of use. A flexible tube connected to the socket 7 is used to supply or remove fluid through the catheter. When not in use the catheter is covered by an open-ended sheath. The catheter tube may be made of polyethylene and the socket and handle element of methyl methacrylate resin.
Patent GB-865990-A (GB)
Title: Improvements in or relating to chains
IPC: F16G13/14
Filed: 1959-11-03
Abstract: 865,990. Chains with dismountable links. COOPER, A. B. Nov. 3, 1959, No. 37230/59. Class 24. A chain of the kind having dismountable links as described in Specification 821,382 has each pair of links provided with a ring 8 to prevent separation of the links. The ring is held by frictional engagement but may alternatively be retained in recesses or depressions in the side portions of the links.
Patent GB-1396902-A (GB)
Title: Evaporator for liquid narcotics
IPC: A61M16/18
Filed: 1972-08-10
Abstract: 1396902 Respiratory appliances VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT MEDITSINSKOGO PRIBOROSTROENIA 10 Aug 1972 37268/72 Heading A5T [Also in Division Bl] An evaporator for use in inhalation narcosis is adapted for blending a carrier gas with evaporable anaesthetics and comprises: a bypass duct 2 generally annular in cross-section; a frusto-conical obturator 3; an evaporating chamber 1 of substantially constant and generally annular cross-section surrounding the bypass duct and communicating therewith through inlet openings 14 and outlet openings 15, said chamber being provided with porous evaporating elements 20 and with a frustoconical effuser 8; and a control slide 11 located in the by-pass duct and mounted for movement between a first position in which it cooperates with the obturator to prevent gas flow through the by-pass duct and a second position in which it co-operates with the effuser to prevent gas flow through the evaporating chamber. A container 17 containing evaporable liquid anaesthetics is provided. The control slide is moved by means of the rotation of a nut 22 provided with a collar 24 carrying a scale. A jacket 19, filled with a thermostabilising liquid, and a thermometer 18 are provided. As shown, the evaporating elements 20 are in the form of porous, metal, channel-section bars. In alternative forms the evaporating elements may be tube-shaped or spiral-shaped.
Patent GB-758332-A (GB)
Title: Process for the injection molding of polytetrafluoroethylene
IPC: B29C45/00
Filed: 1954-12-23
Abstract: Granulated polytetrafluoroethylene is heated to a preliminary temperature in the range of 300-400 DEG C. under a pressure, which may be atmospheric or superatmospheric, which prevents melting of the P.T.F.E. at that temperature, and the heated P.T.F.E. is injected into a closed mould and melted substantially instantaneously thereafter.  The preferred procedure is to preheat the material to a temperature above 327 DEG C. under superatmospheric pressure and then inject it into a cool mould, whereupon the material, being released from pressure, melts at once in the mould and then cools in the mould.  In another procedure the material is heated to a temperature below 327 DEG C. and then injected into a hot mould, the heat of the mould melting it at once, and then cooled in the mould.  Three examples are given.  Details concerning the granulation of P.T.F.E. also are given.  Specifications 572,265, 583,418 [both in Group IV], 588,648, 625,348 [Group IV(a)], 644,008 and 689,400 [Group IV(a)] are referred to.
Patent GB-1154422-A (GB)
Title: Process for the Production of Hard Sheet Steel Of Low Carbon Content
Inventor: WEIGEL HANS-ULRICH
IPC: C21D8/02
Filed: 1966-08-19
Abstract: 1,154,422. Annealing steel sheet. RASSELSTEIN A.G. Aug. 19, 1966, No.37326/66. Headings C7A and C7N. Low carbon steel sheet is heated at not less than 500‹ C. per second to an annealing temperature within the range 780‹ C. -900‹ C., and after holding for not more than 5 seconds is quenched at an average cooling rate of not less than 250‹ C. per second to a temperature below 150‹ C. The sheet may pass continuously through apparatus in which it is heated by electron beam or by radiation, after which it is cooled by liquid spray or by passage over cooling rollers. The strip may then be flattened prior to rolling, or may be kept under tension during cooling.
Patent GB-1013246-A (GB)
Title: Apparatus for applying a top wrapper to a pile of discrete articles
IPC: B65B25/14
Filed: 1963-09-23
Abstract: 1,013,246. Wrapping machines; endless conveyers. TORONTO STAR Ltd. Sept. 23, 1963 [July 10, 1963], No. 37329/63. Headings B8A and B8C. [Also in Division B6] Apparatus for securing a length of wrapping paper over the top and one pair of opposite sides of part of a pile of articles, e.g. newspapers, comprises means for applying a midportion of the wrapping paper against the top of the pile with end portions of the paper hanging at the sides, means responsive to the application of the wrapper which separates the pile into two, at least at its edges, and means responsive to the separation of the pile which tucks the end wrapper portions between the parts of the pile. A pile of folded newspapers 10 (Fig. 1) travels on a roller conveyer 11 past a sensing device 24 which causes pistons 22 to move plates 23 inwards to align the pile before it passes beneath the wrapping machine 26 under which it is halted by a stop 17 actuated by a sensing device 18. The wrapping material 25 is fed from a roll (Fig. 2) between endless springs 81, a length of material being cut off by means, not shown, actuated by a timing device and held above the pile 10. The timing device also activates an hydraulic cylinder 28, the wrapper applying apparatus 26 being carried on the lower end of its piston 27. The apparatus includes a T-bar 37 (Fig. 4) and, as it moves downwards, the bar removes the wrapper from the springs and places it against the top of the pile 10. Rubber bands 73, connecting the ends of folder arms 65, help position the wrapper over the top and sides of the pile. Further pressure on the bar from piston 27 closes a microswitch which activates cylinders 44 causing arms 55 to move towards the sides of the pile, pins 56 at their ends effecting the initial separation of the pile. As the arms 55 continue to move inwards, the edges of the pile are lifted (Fig. 6), the upward movement being contained by a spring 43. Inward movement of the arms 55 permits the arms 65 to rotate towards a horizontal plane. After sufficient lift has been effected, plates 46 on the pistonrods of the cylinders 44 engage cams 71 to permit arms 59 to move rapidly inwards to tuck the wrapper between the parts of the pile (Fig. 7). The piston-rods start to return, causing the arms 55, 69 to move outwards and downwards, thus retaining the tucked wrapping paper 25 in place as the upper part of the pile resumes its horizontal position. When the pistons 45 have fully returned, the apparatus is moved vertically to the position shown in Fig. 2.
Patent GB-1190227-A (GB)
Title: Process for the treatment of Filaments and like Structures of Linear Polyesters
IPC: D01F6/62
Filed: 1967-08-16
Abstract: 1,190,227. Heating polyester filaments before drawing them. FARBWERKE HOECHST A.G. 16 Aug., 1967 [16 Aug., 1966], No. 37720/67. Heading B5B. The rate at which polyester filaments and like structures can be drawn without minute cavities or " bubbles " forming in the filaments during the drawing step is increased by subjecting the filaments prior to the drawing step to a heat treatment step which is carried out at a temperature T (‹C) and during a time t (sec.) such that T = A-X.(log e t) in which, with a duration of heat treatment of 0À3 to 3 seconds, A has any value in the range 77À7 to 95À7 and X = 7À6, and when t = 3 to 3600 seconds, A has any value in the range 72 to 90 and X = 2À48 and, when t = 3600 to 200,000 seconds A has any value in the range 54À6 to 72À6 and X = 0À354. The drawing step may be effected under such conditions that the filaments are thereby oriented and may be effected at ordinary or at elevated temperatures. When the drawing step is carried out at elevated temperatures, it is immaterial whether the filaments are cooled between the heat treatment and the drawing steps or whether they are heated to the temperature required for drawing directly after the heat treatment step. Any method of heating the filaments may be used in the heat treatment step and the filaments may either be prevented from shrinking or may be allowed to shrink to a controlled degree (preferably not more than about 10%) during this step. The filaments may consist of polyethylene terephthalate. The heat treatment of the undrawn filaments &c. can be carried out in a hot liquid, preferably water, in a heated gas or vapour, by radiated heat, dielectric preheating, or by contact with one or more heated surfaces. The heat treatment increases the speed at which the filaments may be drawn without minute cavities forming in them. The polyester used in all the examples is polyethylene terephthalate.
Patent GB-355159-A (GB)
Title: Improvements in and relating to means for storing phonograph records
IPC: B44C5/06
Filed: 1930-12-15
Abstract: 355,159. Storing soun d records. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Graves, P.; 779, State Street, Schenectady, New York, U.S.A.) Dec. 15, 1930, No. 37801. Convention date, Dec. 13, 1929. [Class 40 (ii).] Disc records are stored in a rectangular well supported witt the sides in an inclined positior so that the mouth of one side overhangs the bottom of the opposite side, thereby ensuring that records placed therein fal by gravity into a positior wherein they are supported at one side as well as at the bot tom. The Figure shows such a storage chamber 11 mountec below an opening in the motor board 7 of a gramophone, the inclination of the chamber being towards the turn table 8. The arrangement is particularly applicable for preventing warping of records stored in radio gramophones housing radio apparatus 17 which generates heat.
Patent GB-1148800-A (GB)
Title: Improvements in spring-driven mechanisms
Inventor: MARLOW RICHARD ZBIGNIEW
IPC: H04L13/04
Filed: 1967-08-17
Abstract: 1,148,800. Spring motors. CREED & CO. Ltd. 17 Aug., 1967, No. 37852/67. Heading F2S. In a mechanism employing a spring as a source of drive power, e.g. for a teleprinter carriage, and a motor to wind the spring, both the spring and the motor act on a differential gear which in turn controls a clutch in the motor drive. The motor 1 drives, through a clutch 2, gear members 7, 21, 22, 23, 25, 24, 26 to rotate sun wheel 15 which is loosely mounted on a shaft 11. The spring 9, Fig. 1 (not shown) is a spirally wound strip contained in a housing 8 with its outer end connected to this housing and its inner end connected to the shaft 11. The second sun wheel 14 of the differential gear is fixedly mounted on the shaft 11. Thus the motor drives sun wheel 15 and the spring drives sun wheel 14. The spring is wound by rotation of the housing 8 about the shaft 11, and the housing is fast with both the gear elements 7 and 21 so that when the clutch 2 is engaged the spring is wound. However the gearing between gear elements 21 and 26 is such that they rotate at the same speed but in opposite directions: the planetary gears 16 and 17, whose axles are attached to a sleeve 20 loosely fitted on shaft 11, thus tend to rotate about the axis of shaft 11 whenever the latter is rotating slower or faster than the housing 8, and since the spring is attached at one end to the shaft 11 and at the other to housing 8, the direction of this movement is dependent on whether the spring is being wound or unwound. In the fully wound state the extension 19 of the shaft of planet wheel 17 engages a lever 5 to release the clutch 2, and movement of the mechanism in an unwind direction causes extension 19 to move away from lever 5 and so allow the clutch to re-engage.
Patent GB-1401114-A (GB)
Title: Etching semiconductor devices
IPC: H01L23/482
Filed: 1973-08-10
Abstract: 1401114 Etching semi-conductors WESTERN ELECTRIC CO Inc 10 Aug 1973 [15 Aug 1972] 38000/73 Heading H1K [Also in Division B6] A Group III-V compound semi-conductor body is etched using an etchant comprising an aqueous solution containing ferricyanide ions in a concentration of 0-8 to 1À2 M, and NaOH or KOH in a concentration of 0À3 to 1À5 M. Ferricyanides disclosed are K 3 Fe(CN) 6  and Na 3 Fe(CN) 6 . Etchant temperature may be 60-95‹C. and, for etching GaP or GaAs, is preferably 75-85‹ C. with 0À9 to 1À2 M ferricyanide and 0À4 to 0À7 M hydroxide concentrations. The Specification lists numerous III-V compounds, and dopants which do not significantly effect etching. The etchant selectively attacks the crystal faces of the body but is relatively inert to silica, Au contacts, and Ti masking layers. Applications described are the shaping of a LED body, and the final separation of beam lead devices partly divided by saw-cuts.
Patent GB-342076-A (GB)
Title: Improvements in or relating to recording devices
IPC: G01D9/06
Filed: 1929-12-12
Abstract: 342,076. Relay recording devices. SOC. DES USINES CHIMIQUES RHONEPOULENC, 21, Rue Jean Goujon, Paris.- (Assignees of Etablissements Poulenc FrÞres and Chagnaud, A.; 86, Rue Vieilledu-Temple, Paris.) Dec. 12,1929, No. 38159. Convention date, Dec. 12, 1928. Addition to 299,705, [Class 118 (ii), Signals]. [Class 118 (ii).] In a recording device for measuring instruments wherein the recording member is periodically moved to an extent depending on the position of the instrument pointer as described in the parent Specification the movement of the recording member is effected by a single oscillating arm means being provided for moving the member periodically to and fro from an initial position. As shown, the oscillating arm 14, Fig. 1, under the control of a cam 20 and spring 19, periodically takes up a position defined by the stop 3 on the indicating pointer 1 after which time the cursor 10 carrying the recording member is moved along its guide 11 until arrested by the arm. This movement is effected by cables 27, 28, Fig. 2, passing over pulleys 25, 26 and carrying weights 23, 24 arranged in trays supported by cams 31, 32 operated in synchronism with the cam 20. The marking member in its arrested position is depressed to mark a dot on the record-strip.
Patent GB-369279-A (GB)
Title: Improvements in or relating to cable sealing bells or other insulators for use on high voltage circuits
IPC: H01B17/36
Filed: 1930-12-18
Abstract: 369,279. Pressure-relieving devices. REYROLLE & CO., Ltd., A., Hebburn-on- Tyne, and ALLAN, A., Cragside, Ashleigh Grove, Tynemouth. Dec. 18, 1930, No. 38182. [Class 135.] To maintain a constant pressure on the insulating filling of an oil or compound-filled insulator bushing A, a flexible expansion chamber F for the filling is mounted directly on the bushing. The expansion chamber F is preferably formed as a bellows, the lower end of which is clamped by a flanged ring B to the open end of the bushing. The upper end of the bellows is closed by a cover G and carries a heavy metal cap H having a'depending tubular portion H<2> adapted to slide over an upstanding tube E formed on the flanged ring B. The bellows F may contain air or oil, the bushing A being filled with compound or oil respectively.
Patent GB-1134102-A (GB)
Title: Improvements in or relating to mitre vice apparatus
IPC: B27G5/02
Filed: 1964-09-18
Abstract: 1,134,102. Mitering. S. G. YOUNG. 20 Dec., 1965 [18 Sept., 1964], No. 38251/64. Heading B5L. A mitre unit comprises a vice 3 fixed to a bed 1 and an angularly adjustable vice 2 pivotable about a central pin 14, and a looking clamp 20 for the movable vice 2 operated by a screw 17, the screw being located beyond the periphery of the bed 1. As shown L-shaped clamp members 18, 19 are drawn together by a screw 17, the member 19 engaging in an arcuate blind groove in the underface of the bed 1. In a preferred modification (Fig. 8, not shown) the screw is engaged in a threaded hole (52) in the bracket (51) and has a head (55) which, when the screw is turned by a slot in the other end, is drawn against a ledge (56) on the underside of the bed. An angularly adjustable saw-guide 25 is releasably attached to the pivot pin 25 by a yoke 36 which fits into an emplacement provided by a step on the pin. The guide slot 44 for the saw blade is bounded by two separable plates having spaced and parallel confronting walls 31, 32 which extend beyond the slot 44. The extensions 33, 34 are in contact along a surface 5 that is inclined with respect to the parallel walls. The plates are releasably connected by screws 35 that are threadedly engaged in one plate and freely passed through slots in the other so that on loosening the screws the plates may be relatively displaced so that the portions 31, 32 become more closely or widely spaced.
Patent GB-1319271-A (GB)
Title: Imitation wood and method of making it
IPC: B29C44/46
Filed: 1970-08-07
Abstract: 1319271 Moulding plastic substances SEKISUI KASEIHIN KOGYO KK 7 Aug 1970 [7 Aug 1969] 38277/70 Heading B5A [Also in Division C3] A synthetic wood material is made by extruding a composition comprising a molten styrene or methyl methacrylate polymer, containing at least 50 weight per cent of styrene- or methyl methacrylate-derived units respectively and a foaming agent through orifices into a bundle of filaments, and subsequently foaming the filaments in a foaming zone while they are still soft, the foaming being carried out so that the amount of expansion of each filament is limited to below the full extent by the presence of neighbouring filaments of the bundle and the confines of the foaming zone, and the proportion of polymer in the composition and extent of foaming being such that a material of density in the range 0À1 to 0À7 g./c.c. is produced, and the extrusion being so carried out that each of the expanded filaments has a cross-sectional area of from 0À005 to 1 square centimetre, and that some of the expanded filaments individually have an average density which is greater than 110% or less than 90% of the average density of the whole synthetic wood material. The extrusion may be carried out so that the amount of polymer present in the filaments extruded from the peripheral orifices is less or greater than that present in the filaments extruded from inner orifices. The polymer may be extruded through a first plate having apertures extending therethrough, each of which has a constant diameter through the thickness of the plate, the peripheral apertures having a smaller diameter than the interior ones and a second plate having apertures extending therethrough, each of which has the same average diameter, or alternatively the polymer may be extruded through a single plate which is thicker at the periphery than at the interior and has apertures extending therethrough, each of which has the same average diameter. A temperature regulator (Fig. 1) may be positioned between the extruder (at 51) and the die (at 52) having heating or cooling pipes 56, 57 and 59, 59<SP>1</SP>. Figs. 2 and 4 show extruder a having die b and breaker plate a-1 at discharge end of the extruder; plates 1, 2 have apertures 11, 12 ... and 21, 22 .... Figs. 6-12 show other kinds of dies which may also be used. Fig. 14 shows a plurality of paired rollers which are used to restrict the expansion of the foamed filaments (see Figs. 2 and 4). Figs. 19, 25 and 26, show the apparatus used in examples 2, 7 and 8 respectively.