baber/WOPTO huggingface dataset:
Patent GB-1494209-A (GB)
Title: Hydrolysis and gelation of organic silicates
IPC: C09D183/02
Filed: 1975-11-12
Abstract: 1494209 Silica gel ZIRCONAL PROCESSES Ltd 12 Nov 1975 [26 Nov 1974] 51224/74 Headings C1A and C1J [Also in Division C3] Organic silicates may be hydrolysed by contacting them with water under neutral conditions in the presence of an organotin compound wherein n is 1,2 or 3, R is alkyl or aryl, and X is an alkoxy, carboxylate or R 3 SnO- group. The product may be mixed with a refractory powder and shaped-for this use dibutyltin dilaurate or diacetate is preferred-or mixed with zinc dust to give a paint-for this bis(tributyltin)oxide is preferred, alone or with dibutyltin dialaurate. In examples 'Ethyl Silicate 40' or propyl or isopropyl orthosilicate is mixed with approximately 2-42 vol. per cent of bis(tripropyltin) or (tributyltin)oxide, or dibutyltin dilaurate or diacetate, 0-70 vol. per cent of water and 10, 20 or 150 vol. per cent of aqueous ethanol, based on the volume of silicate. The products are mixed with the aluminosilicate Molochite (2 gm./ml.) to give a slurry, used to build a ceramic shell by the stucco method (Example IX).
Patent GB-1083478-A (GB)
Title: An arrangement for electroplating the inside surfaces of semicylindrical hollow parts
Inventor: RABENAU FRIEDRICH WILHELM
IPC: C25D7/10
Filed: 1965-12-08
Abstract: <PICT:1083478/C6-C7/1> In an arrangement for electro-plating the inside surface of a semi-cylindrical part 6, such as a half shell for a bearing, with the aid of an outside anode, the open side of the part is covered with a mask 1 of electrically non-conductive material provided with a number of bores, slots, holes or other openings therethrough, and the mask is divided in the centre, the two portions 3, 4 on each side of the division being directed inwards towards the part that is to be electroplated to define an opening 5, the width of which is at least equal to 50% of the inner diameter of the semi-cylindrical part.  The cross-sections of the bores, slots, holes or other openings may decrease in the downward direction.
Patent GB-1278244-A (GB)
Title: Macrofilamentary yarns and rubber structures reinforced therewith
Inventor: KENYON DEREK
IPC: B60C9/18
Filed: 1968-10-11
Abstract: 1278244 Tyres IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Oct 1969 48328/68 Heading B7C [Also in Division D1] A synthetic yarn for a tyre cord comprises a plurality of individually twisted monofilaments of 100 to 1500 denier, twisted together. The preferred cord has seven filaments of polyester or polyamide of 400 to 600 denier, individually twisted, and twisted together with between 4 and 8 turns per inch. A radial ply tyre may have a breaker structure of two plies of the cords, which are arranged at angles of up to 20 degrees to the mid-circumferential plane. To minimize distortion of the breaker, the plies are spaced as closely as possible, and rubber between the plies may contain dispersed staple fibres.
Patent GB-1158035-A (GB)
Title: Rectifier Circuits
Inventor: NESTLER WOLFGANG
IPC: H03K17/64
Filed: 1967-11-17
Abstract: 1,158,035. Rectifiers. MAGDEBURGER ARMATURENWERKE " KARL MARX" VEB. 17 Nov., 1967, No. 52482/67. Heading H2F. A rectifier bridge includes one element, 4, switchable between a conducting and a non- conducting state to give full- or half-wave rectification. On first switching on the circuit, rectifier 4 is fired during alternative half cycles by the charging current of capacitor 6 giving full wave rectification. Once capacitor C is fully charged no further fiirng takes place and diodes 1, 3 provide half wave rectification for load 9.
Patent GB-1403340-A (GB)
Title: Purification of hydrocarbon feedstocks
IPC: F25J3/08
Filed: 1973-11-13
Abstract: 1403340 Purifying hydrocarbons with adsorbents UNION CARBIDE CORP 13 Nov 1973 [14 Nov 1972] 52528/73 Heading C5E Feedstock comprising monoolefin and paraffin, each having 3-4 carbon atoms, and containing 50-1000 p.p.m. (wt.) water together with hydrogen sulphide and/or C 1-4  alkyl mercaptan is purified by (1) passing the feedstock, in the liquid phase and at below 200 F., into a fixed bed at below 300 F. of zeolite molecular sieve adsorbent having an apparent pore diameter greater than 6 and having C 3  to C 4  paraffins adsorbed thereon to adsorb the water and sulphur impurities and recover a purified mixture of monoolefin and paraffin from the bottom of the bed; (2) prior to breakthrough of sulphur compound impurity, downwardly draining the liquid from the bed and concurrently purging with 2-20 pound moles of non-sorbable purge gas per 100 pounds of adsorbent at 0-300 F.; (3) concurrently purging the bed with non-sorbable purge gas at 450- 650 F. until the temperature difference between the effluent and influent ends of the bed is less than 100F.; and (4) passing C 3  to C 4  paraffins into the bed to restore it to the condition existing prior to step (1). The presence of adsorbed C3 to C 4  paraffin on the adsorbent prior to the purification step (1) prevents the temperature of the olefin mass transfer zone rising by more than 100 F. during the step (1). The purge gas used in the first purge step does not contain more than 250 p.p.m. (vol.) water and is substantially free of aliphatically unsaturated hydrocarbons. The feed treated can be a mixture intended as feed to an isoparaffin alkylation process. The adsorbent can be a 10 faujasite, or a zeolite X, Y, L or omega and can be agglomerated with or without a binder. The figure (not shown) illustrates a process in which two beds are operated cyclically using natural gas in the two purge stages; the regeneration of the bed in step (4) being carried out by passing liquid isobutane through the bed in either upflow or downflow.
Patent GB-1428955-A (GB)
Title: Sifting machines
IPC: B07B1/48
Filed: 1972-11-15
Abstract: 1428955 Screening apparatus SIMONBARRON LTD 29 Oct 1973 [15 Nov 1972] 52757/72 Heading B2H A sieve screen assembly comprises a frame 13 and a screen 10 which is removably attached around its edges across the frame by means of a number of screen tensioning members 16, each comprising portions attached to the frame 13 and the screen 10 respectively at positions substantially in the same plane as the screen 10, and an intermediate portion extending between the attached portions which has resilient properties whereby the members 16 collectively tension the screen 10 outwardly across the frame 13, each point of attachement of a screen tensioning member to the screen being disposed inwardly from and equidistant from two adjacent points of attachment on the frame. The tensioning members may be attached to the frame by pegs 14, or slots 20 and may be in the form of coil springs 21, resilient bands 16 or resilient ties 18 with tabs 19, Fig. 5 (not shown).
Patent GB-1427917-A (GB)
Title: Packaging of sausages
IPC: B65B25/06
Filed: 1971-11-15
Abstract: 1427917 Packaging sausages UNILEVER Ltd 14 Feb 1973 [15 Nov 1971] 52947/71 Heading B8C A stack of skinless sausages, e.g. four upon four, is moulded to round off its corners and wrapped in a heat softened packaging film which, when cool, maintains the moulded shape of the stack. As shown, stacks of sausages 2 on a conveyer 1 are manually moulded before being refrigerated at 3 and passed on to a perforated conveyer 4 and, when located over a vacuum box 6, are covered by a plastics film 7 softened by a heater 9. The bases of the stacks are covered by a second film 12 and adjacent packages are sealed and separated by a heated wire. The conveyer 4 has registration marks which operate a photo-electric register control on the conveyer drive. In a modification, Figs. 3-8 (not shown), moulding is carried out by means of an intermittently driven conveyer (20) comprising linked blocks (21) of split moulds (24) which close upon the stacks of sausages as they are conveyed under a plate (26); the moulded stacks are then pushed by a plunger (32), together with heat-softened film (29), into pockets (34) in an intermittently driven conveyer (28); a second film (36) is applied to the base of the partially wrapped stacks and the films are then heat sealed and separated.
Patent GB-1183160-A (GB)
Title: Thermometer
Inventor: JONES WILLIAM JOHN
IPC: G01K13/00
Filed: 1968-11-08
Abstract: 1,183,160. Temperature indicators. WESTINGHOUSE ELECTRIC CORP. Nov.8, 1968, No.52958/68. Heading G1D. A chemical therometer comprises a tab 22 of themoplastic material in which are found a number of elongated parallel cells 12a to 12j each respectively filled with material 14a to 14j which changes its appearance at respective threshold temperatures different for each of the cells 12a to 12j and suitably disposed in the range 98 to 103F. The cells as preferably cylindrical and found between two sheets of thermoplastic material, are being transparent for viewing the cells, with magnification provided by the outer cylindrical surface, and the other being pigmented e.g. black to provide a suitable background. As an alternative the cells may be found as troughs in the pigmented sheet overlaid with a flat transparent sheet. The temperature sensitive material are preferably hysteretic cholesteric liquid crystalline compositions which change from a green colour to colourless at the threshold temperature. The compositions of the materials 14a to 14j may be such as to provide a graded series of temperature change indications in equal steps in the cells from 12a to 12j, and the cells maybe disposed in groups to facilitate reading of the temperature achieved by counting the number of cells which have changed colour after insertion of the tab 22 in a patients mouth. A smaller number of cells may be provided to merely give indication of temperatures below, at, or above normal if desired. In an alternative embodiment the cells are disposed in circumferentially round or elongated circular section body off thermoplastics material, the cells extending longitudinally with respect to the body.
Patent GB-1117287-A (GB)
Title: Power supply control using gate pulse amplifiers
IPC: H02M7/162
Filed: 1966-11-28
Abstract: 1,117,287. Rectifying. WESTINGHOUSE ELECTRIC CORPORATION. 28 Nov., 1966 [17 Dec., 1965], No. 53077/66. Heading H2F. [Also in Division H3] A pulse amplifier comprises a capacitor C1-1 charged from an alternating voltage source via a rectifier D1-1 and discharged via the primary of a transformer PT1 under control of a switching device such as thyristor So-1, saturation of PT1 being arranged to terminate the output pulse at the secondary. In the circuit described, diode D2-1 also becomes conductive when thyristor So-1 is triggered by a 20 Ás pulse from B, assisting in the turn-off of So-1. Transformer PT1 is reset after each pulse by the voltage developed across RP1, D2-1 and D3-1. Each output pulse has the duration of 200 Ás. A further " mirror-image " circuit employing thyristor So<SP>1</SP>-4 provides pulses at PT4 displaced by 180 degrees. Three pairs of circuits shown may be employed to trigger the main thyristors in a three-phase bridge rectifier (Fig. 2, not shown). The main rectifier may use series or parallel connected thyristors. The six pulse amplifiers are respectively triggered by pulses (see Specification 1,117,286) displaced by 60 degrees and adjustable in phase with respect to the main supply. Generating double pulses.-Each thyristor such as So-1 is connected by diodes such as D3-1 to the primary of two pulse transformers PT1 (Figs. 4, 5, 7, not shown) so as to provide two pulses (separated in phase by 60 degrees) from the secondary of each pulse transformer, which are coupled to the gates of the respective main thyristors. Fault indication.-A capacitor C2-1, charged via D4-1 during each pulse causes a neon indicator NI to strike, thus indicating the presence of trigger pulses. A separate indicator may be provided for each channel or a single indicator may be switched to the respective channels.
Patent GB-1520199-A (GB)
Title: -bis(hydroxyalkyl) dialkylanilines and their use as accelerators for redox polymerisation of unsaturated compounds
IPC: A61K6/083
Filed: 1976-12-20
Abstract: 1520199 Redox polymerization ESPE FABRIK PHARMAZEUTISCHER PRAPARATE GmbH 20 Dec 1976 [24 Dec 1975] 53153/76 Heading C3P [Also in Division C2] The redox polymerization of unsaturated compounds is effected by contacting the said compounds with a redox polymerization catalyst e.g. a peroxide, and as accelerator, an N,N-bis- (hydroxyalkyl)-3,5-di-t-butyl aniline of the formula wherein R1 and R2 are the same or different and are each H or (C1-4) alkyl. Specified unsaturated compounds are acrylic or methacrylic acid or an ester thereof. The resulting polymers are useful as dental materials.
Patent GB-1205221-A (GB)
Title: Articles having thermoplastics surfaces
IPC: B29C65/36
Filed: 1967-11-22
Abstract: 1,205,221. Laminating. DAVIDSON RUBBER CO. Inc. 22 Nov., 1967 [29 Nov., 1966], No. 53183/67. Heading B5N. [Also in Division B6] A method of bonding together two articles having thermoplastics surfaces comprises applying an electromagnetic induction field to a perforated metal member in contact with the adjacent thermoplastics surfaces of the two articles, the heat generated in the metal member heating the surfaces sufficiently for the thermoplastics material to penetrate the perforations of the metal member. Specified thermoplastics are acrylonitrile-butadiene-styrene copolymers, polyvinyl chloride, polyethylene, polypropylene, acrylic resins, cellulose acetate, nylon and polystyrene. The perforated metal member may be in the form of a mesh of wire, metal filaments or strands or may be expanded metal. The articles may be in sheet form. Alternatively, the process may be used to bond indicia to signs, to decorate moulded articles, to implant decorative strips in vinyl floors or to bond motor trim components to thermoplastic articles. Examples are given.
Patent GB-1407062-A (GB)
Title: Semiconductor devices
IPC: H01L21/00
Filed: 1972-11-17
Abstract: 1407062 Semiconductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 17 Nov 1972 [22 Nov 1971] 53205/72 Heading H1K A semiconductor device, e.g. a diode (Fig. 1) comprises a first region 1 of one and a second region 2 of an opposite conductivity type separated by plane junction 3; the region 1 having a central zone 4 and a peripheral zone 5 of increased resistivity having thickness B < 1/3 the thickness of the central zone and of width A which is large and comparable with D. Injection of charge carriers into region 1 by electrode 6 directs current lines 8 normally to junction 3 without divergence so that zone 5 is only traversed by a negligable current and the surface adjoining junction 9 need not be passivated. Alternatively (Fig. 2) the junction 13 may adjoin the lateral surface of the diode at 19 between regions 11, 12; the peripheral zone 15 of region 11 having higher resistivity than its central zone 14 so that the current lines between electrodes 16, 17 again do not diverge; the peripheral zone having small thickness and large width. Regions 4, 14 may be diffused conventionally to give a dopant concentration profile (Fig. 4, not shown) which diminishes longitudinally in relation to the depth. In fabrication of an electroluminescent gallium phosphide diode according to Fig. 1 (Figs. 3a to 3f, not shown) a monocrystalline n-body is masked and windowed by photoetching to allow vapour diffusion, e.g. of zinc from a gallium zinc source to produce a diffused p-region forming a junction. The original mask is replaced by a further mask delimiting a protected central circular zone and etched with H 2  SO 4  + H 2 O 2  (or mechanically ground) to form a mesa with a thick central zone of the p-region surrounded by a thin peripheral zone. Thereafter electrodes are vacuum deposited on the opposed faces. The diffusion and etching are such that where R is transverse resistance of central zone, # is average resistivity of peripheral zone, e is the thickness thereof, r 2  and r 1  are inner and outer radii.
Patent GB-1121929-A (GB)
Title: Molten material temperature measuring installation
Inventor: GITTER VALERY MIKHAILOVICH
IPC: G01J5/04
Filed: 1966-12-02
Abstract: 1,121,929. Measuring temperature. TSENTRALNAYA LABORATORIA AVTOMATIKI. Dec. 2, 1966, No. 54102/66. Heading G1D Apparatus for measuring the temperature of molten metal e.g. in an open hearth furnace 4 comprises a water cooled tube 1 containing a pyrometer 3, a winch 7 for moving the tube 1 into and out of the furnace 4, a device 9 for blowing a gas through the tube and out from an opening 2 in the tube bottom to prevent entry of the molten metal into the tube 1, metering means 12, 13 for measuring the gas pressure in the tube 1 and containing a pair of contacts which are actuated when the pressure reaches a predetermined value signifying that the tube has been lowered to a certain depth in the molten metal, the actuation of the contacts causing the movement of the tube to stop so that a temperature measurement using the pyrometer 3 and meter 14 can be effected. Air from a compressor (not shown) is supplied to the tube 1 via a flow rate stabilizer 11. The metering means 13 contains a micro-switch connected to an electrical control circuit for the winch 7. This device may comprise two concentric discs which are interconnected by a spring to rotate together as pressure rises in the tube 1. When the tube 1 has been lowered to a certain depth into the furnace a limit switch is actuated and this causes a brake to engage one of the discs and prevent further movement. The other disc continues to rotate due to the pressure increase as the tube 1 is lowered into the molten metal until a cam arrangement carried by the discs actuates the above mentioned contacts to stop the lowering of the tube 1. After a predetermined time during which the temperature of the metal is measured the circuit 8 operates to cause the winch 7 to raise the tube 1.
Patent GB-1188176-A (GB)
Title: Pressure Vessel Inlet Valve
IPC: F16K1/20
Filed: 1967-11-29
Abstract: 1,188,176. Delivering wood chips. BELOIT CORP. 29 Nov., 1967 [15 Dec., 1966], No. 54369/67. Heading B8A. Wood chips are delivered horizontally through opening 12 by conveyer screw 11 and fall down passage 13 into a pressure cooker, the opening 12 being controlled by valve plate 19. Plate 19 is carried pivotally at 21 by rod 22 influenced by pressure cylinder 24 and its movement is guided between open and close positions bv wood chips are compressed to prevent escape of air from the pressure cooker. The compressed chips then force open the plate 19 against the pressure of air in chamber 24 whilst at the same time the chips are deflected downwards by the plate. If, however, the chips are less compressed, then plate 19 is urged leftwards by cylinder 24 to close the opening 12. In this way chips are permitted into cooker 30 whilst maintaining a seal to the opening 12
Patent GB-1277124-A (GB)
Title: Improvements in or relating to transfer means for characters and/or symbols of self-adhesive material
Inventor: KOENIG CLAUS
IPC: B44C1/17
Filed: 1969-11-06
Abstract: 1277124 Transfers C KOENIG 6 Nov 1969 [7 Nov 1968] 54386/69 Heading B6C A transfer comprises a masking foil 1 with an anti-adhesive surface 2, carrying a layer of selfadhesive material 3. A printed design 4 is laid on the material 3 and this deprives the material of its adhesive power at this location. The material 3 and design 4 is then covered by a carrier foil 5 to which the adhesive material 3 bonds more strongly than to the foil 1. In use, the masking foil is peeled away. Then the adhesive surface is applied to the base being decorated and the design 4 is secured thereto by rubbing the area of the carrier foil 5 to break down the adhesion between the design 4 and the foil 5. The latter may then be removed from the base leaving only the design 4 thereon secured by the self adhesive material between the design and the base.
Patent GB-1496338-A (GB)
Title: Container closure caps
IPC: B65D41/42
Filed: 1974-12-17
Abstract: 1496338 Closure cap with tear-off tab WICANDERS KORKFABRIKER AB 17 Dec 1974 [10 May 1974] 54517/74 Heading B8T A container closure cap of aluminium comprises a top wall having an annular skirt provided with a radially extending tear tab and a pair of score lines 5, 6 that extend up the skirt in line with the edges of the tear tab and which thereafter extend at least part way around the top wall slightly spaced from the periphery thereof. The cap has a seal ring 9 aligned with the score lines and preferably bonded to its underside. The adhesive may cross the score lines if tearing is to be limited. The seal ring may or may not be torn adjacent the tear tab and it may have a plasticized PVC annular inwardly extending thin horizontal lip 12, part 12a of which remains with the torn off portion of the top wall to hide sharp edges. At least one of the scores may be stopped short of the skirt area diametrically opposed to the tear tab. Alternatively both scores may extend down to the bottom of the opposite skirt portion. The cap may remain in one piece for re-use.
Patent GB-1432690-A (GB)
Title: Process for separating high purity aromatic hydrocarbons from mixtures containing them
IPC: C07C7/08
Filed: 1973-11-23
Abstract: 1432690 Extractive distillation SNAMPROGETTI SpA 23 Nov 1973 [29 Nov 1972] 54612/73 Heading C5E  Aromatic hydrocarbon 14 is recovered from a feed 1 which comprises at least 80% by weight of aromatic hydrocarbons by subjecting the feed to extractive distillation in a column 2 at 50-200 C. with a solvent mixture 19 comprising water and an organic solvent to produce an overhead 3, which is condensed and separated into a water stream 8 which is recycled, together with a portion of the non-aromatics, to the column 2 at one or more points above the point at which the feed 1 and the solvent mixture 19 is fed, and a bottom 9 comprising the purified aromatic hydrocarbons, organic solvent and water; the bottoms 9 is rectified in a column 11 to separate an overhead 20 and a bottoms 17, comprising organic solvent and water, which is recycled to the column 2 as the stream 19. The overhead 20 can be condensed and separated into a water stream, which is in part recycled as the stream 15 and in part vaporized at 18 and recycled as the stream 16, and the aromatic product 14. The solvent can comprise N-formyl morpholine, 2-formyl morpholine, 3-formyl morpholine and morpholine-acetone and suitably contains 0À5-25 wt. per cent water. As illustrated in Fig. 2 (not shown) the extractive distillation and rectification can be carried out in upper and lower portions respectively of a single column. The examples relate to the separation of an artificial feed comprising (a) 95 wt. per cent benzene and 5% n-heptane and (b) 70% benzene, 20% toluene, 5% xylene and 5% non-aromatic hydrocarbons.
Patent GB-1180138-A (GB)
Title: Improved Patterning Mechanism for Knitting Machines.
Inventor: FARMER ERNEST LEONARD
IPC: D04B15/66
Filed: 1967-12-01
Abstract: 1,180,138. Knitting-machines. WILDT MELLOR BROMLEY Ltd. 18 Nov., 1968 [1 Dec., 1967], No. 54725/67. Heading D1C. A pattern mechanism for selecting needle jocks having a sprung extension 4c and an associated presser 12, comprises means for pushing one end of the presser onto a temporary holding device and means for thereafter releasing selected pressers. The mechanism is applicable to flat or circular machines. In advance of each station of a multifeed circular machine the upper ends 12a of the pressers are forced by a cam against a permanent magnet 15. A blade 17 is vibrated between the poles of magnet 19 by means of a solenoid 20 at the dictates of pattern means. Selected pressers are forced away from the magnet by the end 17a of the blade permitting the extension to spring outwards. Butt 4d is thereby engaged by rise cam 8. The pattern means comprises multi-track pattern band passed over an internally illuminated drum and scaned by a series of photoelectric cells, one for each feed.