baber/WOPTO huggingface dataset:
Patent GB-759573-A (GB)
Title: Variable frequency oscillating system
IPC: H03C3/08
Filed: 1954-08-09
Abstract: 759,573. Electric transducers. BENDIX AVIATION CORPORATION. Aug. 9, 1954 [Sept. 17, 1953], No. 23111/54. Class 40(1) [Also in Group XL(c)] Frequency modulation of an oscillator having valves V1, V2 back-coupled from the cathode of the second valve V2 to the cathode of the first through a coupling L1, C1 series resonant at the mean frequency of the oscillator is produced by applying a quadrature phase voltage from the junction of L1, C1 to an input of the first valve V1 after amplitude modulation in a balanced modulator bridge circuit 15. An amplifier 16 may precede the bridge modulator, and an amplifier or cathode follower 17 may follow it. The bridge arms may be resistances, one of them a strain gauge sensing element, or if the sensing element is an inductance or condenser, the arms may contain positive or negative reactances, with or without resistances. Or the bridge may be any device with input and output terminals, adjustable from a condition giving null output, e.g. a differential transformer 25, Fig. 3, with pick-up movable winding 25b for detecting movement, e.g. of the free end of an aneroid.
Patent GB-830644-A (GB)
Title: Improvements in electrical insulation material
IPC: H01B3/50
Filed: 1958-07-18
Abstract: 830,644. Fabric for electrical insulation. GENERAL ELECTRIC CO. July 18, 1958 [Aug. 19, 1957], No. 23128/58. Drawings to Specification. Class 142(4) [Also in Group XXXVI] An electrical insulating fabric is woven from a warp of polyester yarns and a weft of thicker glass filament yarns. The fabric is heat-set and coated with varnish or a synthetic resin.
Patent GB-1142882-A (GB)
Title: A process for preparing moderate weight polymers
IPC: C08F36/04
Filed: 1966-05-24
Abstract: 1,142,882. Heat activated Zeigler catalysts. MARATHON OIL CO. 24 May, 1966 [24 May, 1965], No. 23129/66. Heading C3P. [Also in Division B1] Polymers of molecular weight 400-1000 are made by contacting an α-olefin with a Ziegler type catalyst which has been activated in an inert liquid at 60-200‹ C. for 10-20 hours. Specified olefins are ethylene, propylene, butene-1, hexene-1, heptene-1, octene-1, octadecene-1, dodecene-1, di-isobutylene, butadiene 1: 3, pentadiene 1: 3 and isoprene. Examples describe the preparation of low polymers from 4 methyl pentene-1 using a Ziegler type catalyst prepared from TiCl 4  and AlEt 3 .
Patent GB-295366-A (GB)
Title: Improvements in or relating to adhesives
IPC: C09J101/00
Filed: 1928-08-10
Abstract: 295,366. I. G. Farbenindustrie Akt.- Ges. Aug. 10, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Adhesives.-An adhesive of the cellulose ester type, that is, containing a cellulose ester base with other customary constituents such as plastisizing and softening agents, solvents &c. comprises also a finely divided solid substance such as metallic powders (bronzes), sawdust, kaolin, talc, flour, gypsum, asbestos &c. The following combinations are specified in examples, (1) nitrocellulose, camphor, acetone, sawdust, (2) acetyl cellulose, tricresyl phosphate, methyl alcohol, methyl and ethyl acetates, kaolin, (3) nitrocellulose, ethyl acetanilide, ground asbestos, (4) waste-film, ethyl alcohol and acetate, aluminium bronze, (5) nitrocellulose, ethyl acetanilide, castor oil, ethyl and methyl acetates, methyl alcohol, ground asbestos, (6) waste film, ethyl acetanilide, castor oil, tricresyl phosphate, ethyl and methyl acetates. Proportions are given.
Patent GB-1094273-A (GB)
Title: Adipimide derivatives
Inventor: AGOURI ELIAS
IPC: C07D223/04
Filed: 1965-05-31
Abstract: The invention comprises adipimide derivatives of the formula <FORM:1094273/C2/1> in which R1, R2, R3 and R4 are hydrogen, methyl or ethyl and together contain at least one carbon atom, and R5 is alkyl of 1 to 6 carbon atoms, and also N-methyl 3-methyl adipimide. These may be prepared by reacting the corresponding substituted adipic acid anhydride with at least one equivalent of an amine of formula R5NH2 and heating the intermediate product (an N-alkyl monoamide of the substituted adipic acid) at 250 DEG  to 360 DEG  C., or by reacting the N-alkali metal salt of the adipimide with a halide, preferably an iodide of the formula R5Hal.  The former preparation may take place in the presence of an inert solvent, e.g. water, a lower alkanol, chloroform, benzene or toluene, which is distilled off together with excess amine before the intermediate product is heated.  The compounds represented by the above formula drawing are stated to have therapeutic properties as spasmolytics, especially in the treatment of the petit mal type of epilepsy. They may be made into compositions containing conventional diluents and excipients, e.g. starch, lactose, a syrup or dilute aqueous alcohol, and are preferably in a form suitable for oral administration.
Patent GB-736744-A (GB)
Title: Improved method and means for silencing pulsating gaseous currents such as exhaust gases
Inventor: DICKER GEORGE ALBERT
IPC: B64F1/26
Filed: 1953-08-22
Abstract: 736,744. Silencers for gaseous currents. LOCKER & CO., Ltd., T. Aug. 19, 1954 [Aug. 22, 1953], No. 23200/53. Class 7(2). In a method of silencing, for example, the exhaust gases of a jet propulsion engine, the gases are passed through one or more baffle members 23, Fig. 3, constructed of split metal sheeting comprising a thin-gauge steel plate 10, Fig. 1, in which is cut a series of rows 11, 12, 13 of short, parallel and spaced apart slits, the metal between the slits of each two adjacent rows being pressed out of the plane of and alternately to one side and the other of the plate 10 to form semi-elliptical, bridge-like loops 14, 15. As shown in Fig. 3, the baffles 23 are disposed within a coaxial cylindrical baffle tube 24 of split metal sheeting forming an annular space 25 with a casing 20, that space being filled with fibreglass or asbestos. In modifications, (a), Fig. 2 (not shown), transverse or inclined baffles are secured in spaced-apart relationship and within a casing, and (b) two coaxial baffle tubes 33, 34, Fig. 4, of split metal sheeting are disposed within a casing 26, the tubes being secured to a plain baffle 29, having a central aperture 32, at the inlet end of the casing, and secured together and closed by a plain disc 35 adjacent the outlet end 28 of the casing ; spacing ribs or other supports are provided between the tube 33 and the casing.
Patent GB-1466254-A (GB)
Title: Chemical embossing
IPC: C08J9/10
Filed: 1974-08-13
Abstract: 1466254 Coated products FISONS Ltd 13 Aug 1974 [16 May 1973] 23216/73 Heading B2E [Also in Division C3] A process for chemically embossing a thermoplastic material comprises forming an expandable layer of a plastisol containing a thermoplastic polymer and a chemical blowing agent, applying an activator composition containing an activator for the blowing agent to selected areas of one surface of the layer, contacting the other surface of the layer with a contiguous activator layer comprising an activator for the blowing agent such that part of the activator in the contiguous layer migrates into the expandable layer, and heating the system to a temperature and for a time such that the blowing agent beneath the said selected areas is decomposed to a greater degree than in the remaining areas. The contiguous activator layer may be a layer of a composition containing the activator coated directly onto the expandable layer or it may comprise activator coated onto or incorporated into a carrier layer which is contacted with the expandable layer for example by a coating process or by lamination. Where the contiguous activator layer is formed by coating a composition directly onto the expandable layer the composition may consist of the activator alone or include a carrier. Preferred compositions comprise a solution or dispersion of the activator in a solvent, firm former or binder resin. Suitable solvents are given and the firm former binder resins may be polyvinylchloride or copolymers of vinyl chloride and vinyl acetate, acrylic resins, polyurethanes, cellulose acetate, polyesters, polystyrenes, rubbers, epoxy resins, and silicones. Where the contiguous activator layer is formed by a process comprising a coating an activator composition onto a carrier layer the activator composition may be a solution or dispersion as above. Suitable carriers are paper, felts, woven fabrics or films of thermoplastic polymers. The layers may be pre-coated with a polymeric material such as a silicone alginate or casein compositions. Preferably the activator is incorporated into a thermoplastic materal such as a polyamide, polyester, polyurethane, polyacrylate, polystyrene or polymers of halogen-substituted olefins. Examples are given. The expandable layer may be of condensation polymers such as a polyamide or polyester or an addition polymer such as a polyolefin, e.g. polyethylene or polypropylene, polyacrylate, e.g. polymethyl methacrylate, polystyrene and polymers of halogensubstituted olefins such as polyvinylchloride. Preferred materials are listed. Conventional activators and blowing agents, of which many examples are listed may be used. The expandable layer may contain plasticisers, solvents, diluents, extenders, fillers, hardeners, dyes, pigments and stabilisers. Suitable plasticisers are listed. If desired a wear surface may be provided on the embossed surface and this may be achieved by applying to the printed layer a plasticised layer of thermoplastic polymeric material preferably not containing a blowing agent.
Patent GB-997911-A (GB)
Title: Improvements in or relating to the tightening of screws and nuts
IPC: B25B23/145
Filed: 1962-06-18
Abstract: 997,911. Screwdrivers and nut runners. PRESSLUFTWERKZEUG - UND MASCHINENBAU PREMAG G.m.b.H. June 18, 1962 [June 16, 1961], No. 23327/62. Heading B3N. Screws and nuts are tightened by first applying a torque of between 50% and 100% of the final torque, and then after a time lag, increasing the power input to the -desired final torque. The screwing-up device may be pneumatically, electrically, or hydraulically driven, and may be of the rotary percussion type. The method may be carried out by a single or multiple screwdriver having a change-over device in the line to the drive motors for switching on a reduced power input for the initial torque, with subsequent automatic increase of power input after a time lag. A multiple screwing-up unit 9 is supplied with air from a source 1, via an air filter 2, the feed line 12 passing through a control device 11, where it is split into two lines 13, 14. Both lines have a reducing valve 3 or 6, and a shut-off valve 4 or 7, actuated by electromagnets 15, 16. Line 14 also has a pressure monitor 5, having a diaphragm maintained under pressure from lines 12, 13, and valve 6 is set to a higher pressure than valve 3. In operation, switch 10 is actuated to energize magnet 15, valve 4 opens, and air is supplied at reduced pressure to units 9, to initially tighten the nuts. The diaphragm in monitor 5 is displaced to close valve 4 and open valve 7, after a suitable time lag, and the final torque is applied. In a modification, a single pressure reducing valve whose pressure is changed by monitor 5 replaces the valves 3, 6.
Patent GB-1532617-A (GB)
Title: Sheet alignment device
IPC: B65H9/10
Filed: 1977-06-02
Abstract: 1532617 Registering sheets POLYGRAPH LEIPZIG KOMBINAT FUR POLYGRAPHISCHE MASCHINEN UND AUSRUSTUNGEN VEB 2 June 1977 [11 June 1976 21 Feb 1977] 23391/77 Heading B8R Sheets 11 fed to a printing machine are laterally registered against a stop 8 by one or more reciprocable, suction sleeves 1. Each sleeve is perforated at 9 and grooved at 18 to transmit suction forces to the underside of the sheet from passages 10 and a duct 2 in a carrier member 3 upon which the sleeve is slidably mounted. As shown, the carrier 3 is fixed and has an additional duct 17 communicating with a ram portion 14 of the sleeve 1. When suction is applied to the ducts, the sheet is attracted to the sleeve 1 and the sleeve is urged leftwards by the ram against the action of spring 13. In a second form, Fig. 2 (not shown), the carrier (3) is reciprocated mechanically and the sleeve (1), yieldingly mounted thereon by a spring (6), reciprocates with the carrier until the sheet (11) abuts the stop (8).
Patent GB-269058-A (GB)
Title: Improvements in and relating to flexible ball and socket pipe joints
IPC: F16L27/04
Filed: 1926-09-22
Abstract: 269,058. Kiel, C. A. Sept. 22,1926. Joints. - A ball-and-socket joint comprises a ball member 1, having a substantially spherical body 4 and a neck 5, an integral one-piece socket 2, cast about the said body 4 and having a chilled metal seat 15, and a cap member 3, screwed upon the neck 5 of the ball member and having its interior surface in contact with the exterior surface of the socket member. The ball 1 is first cast or moulded and its exterior surface is then machined, after which it is used to form the core of the socket mould. An annular space is left between the body 4 of the ball and the wall of the mould of a width corresponding to the seating surface 15, and when the molten steel is poured into the mould a portion of the metal will fill the space and coming into contact with the cold body 4 will be instantly chilled. The ball and socket members are next ground together and the exterior of the socket member then machined. The joint is completed by the cap 3 which has a split neck 20 capable of being contracted to secure it against rotation. A part 8 of the bore of the ball member is of square section for the reception of a. wrench so as to enable the cap 3 to be adjusted, while the cap may be provided with a connection for the introduction of a lubricant.
Patent GB-898641-A (GB)
Title: Improvements relating to packaging and packages
IPC: B65D77/30
Filed: 1957-07-24
Abstract: 898,641. Packages, pouches, plastic film bags. BROWN, S. July 3, 1958 [July 24, 1957; Sept. 2, 1957; Jan. 1, 1958], Nos. 23462/57, 27597/57 and 71/58. Classes 66, 94(1), 94(2) and 133. Bags or containers formed wholly or in part by plastic sheet have weakening lines arranged to be torn by transverse stress in the plane of the material, the lines being such as not to perforate the package, and being formed by placing the sheet between plane and ribbed plates and reducing the distance between them with accompanying application of heat. The invention may be applied to bags formed by sealing two sheets of material adjacent their edges, the material being thinned along a line adjacent one end. A pouch, Fig. 4, may have a weakening line 27 which also serves as a seal to secure a strip 25 with tabs 28, 29 to facilitate opening by pulling in opposite directions. The filled pouch is sealed along a line 15. Semi-rigid containers with sealed-on inset or flush covers may have a weakening line 47, Fig. 12, a portion of which, 46, passes through a tab 48, the tab being pulled to tear the portion and initiate tearing along the entire line. A cylindrical container may have a single weakening line round the body beneath the sealed on cover, or a pair of such lines 74, 75 may be joined by a further weakening line passing through a tab 76, the further line being torn on pulling the tab to permit removal by tearing of the strip between the lines 74, 75.
Patent GB-998090-A (GB)
Title: Improvements in light valve systems
IPC: H04N5/74
Filed: 1961-06-29
Abstract: 998,090. Colour projection systems. GENERAL ELECTRIC CO. June 29,1961 [Aug.15, 1960], No. 23568/61. Addition to 944,247. Heading G2J. In a system in which coloured images are to be projected by a lens 47 on to a screen 43,point by point information relating to said coloured images is contained in a tape 21 in the form of orthogonally arranged deformations, some of which are, for example, for diffracting green light in the vertical direction and the others being, for example, for diffracting red and blue light in the horizontal direction. The construction of such a tape is described in the parent Specification. A source of light is provided, for example, by an arc 44 with reflector 45. A mask 50 having rectangular transparent area or openings 51 and a filter mask 52 having corresponding opaque areas 55 are so arranged that light which has traversed the openings 51 and is undeviated by the tape 21 is focused by a lens 46 on the opaque areas 55. In the areas of tape 21 where deformations for deviating green light occur green light from source 44 is diffracted vertically and passes through one of the green filter strips 53 in the mask 52 to be projected by the lens 47 on to the screen 43. Light other than green is blocked by strips 55 or 53. In the areas of tape 21 where deformations for deviating blue light occur, blue light from source 44 is diffracted horizontally and passes through the first of the magenta filter strips 54 provided between the opaque strips 55 to be projected by the lens 47 on to the screen 43. Red light is similarly diffracted horizontally by its corresponding deformations to pass through the second of the magenta strips counting from the opaque strip on which the undeviated light would have fallen. Other colours of light and red light diffracted by the blue-light-diffracting deformations and vice-versa are blocked by the opaque strips 55 or the magenta filter strips 54. Masks 51 and 52 may be interchanged. Specification 954, 644 also is referred to.
Patent GB-375603-A (GB)
Title: Container for storing frying pans
IPC: A47J37/10
Filed: 1931-08-21
Abstract: 375,603. Containers for fryingpans. GOEDECKE, R., 7, Marklinger÷derstrasse, Wernigerode, Germany. Aug. 21, 1931, No. 23579. [Class 52 (i).] A container for soiled fryingpans consists of a pocket-like vessel with pivoted lids. As shown, an octagonal container a, fitted with a sliding grease receiver b, has a cover in two parts c, c<1> on pivots d. The tongues e are engaged by the pans inserted, and the covers are thus closed over automatically. The edges h engage with beadings i, and render the closure dustproof. Each cover has an aperture f through which the handle extends.
Patent GB-696262-A (GB)
Title: Improvements in and relating to voltage regulators
IPC: H01F29/04
Filed: 1951-10-10
Abstract: 696,262. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 10, 1951 [Oct. 14, 1950], No. 23579/51. Class 38 (ii). In a voltage regulator having on the same core 30 a winding 3 connected in parallel with the load L and a tapped winding 4 in series with the load, the layers of turns of the latter between the tappings are distributed between two or more cylindrical groups 32, 33 in such an arrangement that when the regulator is operating at less than maximum buck or boost, so that less than the whole series winding is being used, the cooling is adequate to permit the load current to be proportionately increased. In the regulator of Fig. 1 the voltage may be regulated from 100 per cent boost with switch 6 on contact R and contacts 18, 19 of switch 5 on tap 17 to a 100 buck by rotating contacts 18, 19 twice in a counterclockwise direction and operating switch 6 from R to L when contacts 18, 19 were on contact N. Fig. 4 shows the nine tap sections 21-29 distributed in such a way between two groups 32, 33 separated by air space 34, that when contacts 18, 19 engage taps 13 for 50 per cent boost the sections 21, 22, 23, 24 through which the load current flows are all on the outsides of the windings with maximum heat dissipation, while with contacts 18, 19 on. tap 14 for 50 per cent buck, the load current flows through section 26, 27, 28, 29 which are below the outer sections in good but less effective heat dissipating conditions. Section 25 in the worst position is not in use during 50 per cent buck or boost. Heat dissipation needs are greater during boost than during buck when the load current is usually lighter and the shunt current is not increased, but is reduced by the shunt current. In modifications the layers may comprise more than one intertap section, Fig. 5 (not shown), or the groups may comprise two (or three) layers only, Fig. 6 (not shown). Alternatively the the full range may be provided by selectively operating the tapped winding between conditions of 100 per cent voltage boost and zero, 100 per cent buck and zero and the like for other percentages, Fig. 7 (not shown).
Patent GB-472195-A (GB)
Title: Improved process for extracting cashew nut-shell oil
IPC: C11B1/10
Filed: 1936-08-28
Abstract: <PICT:0472195/III/1> In a process for extracting oil from cashew nut shells by subjecting them to heated cashew nut oil in a stationary tank, the nuts are fed to a confined space below the level of the oil, being retained within the space and conveyed slowly through the oil while being forcibly maintained continuously submerged during their travel through the oil.  Apparatus for carrying out the process comprises a hopper F from which the nuts are fed by an intermittent feeding device G to the space between a conveyer belt C and a false bottom Q in a tank A heated by a furnace B. The belt C may be composed of parallel flexible metal strips provided on the outside with cross-ribs D, and passes over wheels or pulleys E mounted at the ends of the tank.  Ribs C<1> on the inner side of the belt engage grooves E<2> in the wheels E to prevent slip.  The false bottom Q may consist of flat rigid metal strips.  The tank A is provided with an oil overflow O and an outlet L for the treated nuts.  The feeding device G is driven in proportion to speed of the belt C, which is driven by gearing the speed of which can be varied.
Patent GB-309982-A (GB)
Title: Improvements in spring pressed packing for valves
IPC: F16K3/26
Filed: 1928-08-17
Abstract: 309,982. Yarnall-Waring Go., (Assignees of Yarnall, D. R.). April 19, 1928, [Convention date]. Piston valves.-A valve of the kind provided with a movable plunger slidably mounted in compressible packing has a spring interposed between the packing and the compressing means. Packing rings 15, 16 are arranged above and below the inlet port 6, the ring 15 being situated between sleeves 13 and 14 and the ring 16 between the sleeve 14 and the bottom of a recess 12. The sleeve 13 carries a yoke 10 acted on by springs 30 arranged between the yoke and nuts adjustably secured to studs 20 to compress the packing. The actuating spindle 18 is rotatably mounted in the yoke 10 and has a screw threaded engagement with a member 17 screwed to the valve member 19. The member 17 has lugs 22 adapted to engage fins on the yoke to prevent rotation of the valve member and to engage the sleeve 13 to put additional pressure on the packing as the valve approaches its closed position.
Patent GB-220485-A (GB)
Title: Improvements in or connected with crankpin lubrication
IPC: F16N31/02
Filed: 1923-09-24
Abstract: 220,485. Spence, W. L. Sept. 24, 1923. Channels in cranks.-Oil is supplied to a longitudinal groove or flat E situated at that part of a crank pin D' which is nearest to the main axis. As shown, oil exuding from the main bearing C<1> collects in an annular lip G on the crank web and passes to the groove E by a passage F; but the oil may be supplied through an axial duct in the crank shaft which communicates with the groove E by an open or closed duct. Specification 10675/94 is referred to.
Patent GB-583755-A (GB)
Title: Improvements in or relating to cartons and like containers
IPC: B65D5/06
Filed: 1944-11-29
Abstract: 583,755. Cartons. FREEMANTLE, H. R. Nov. 29, 1944, No. 23802. [Class 66] A carton for liquid or powdered foodstuffs &c. has a slit unsealed by ripping off an adhering metal foil or fabric strip or paper tape, the walls being then pressed so that the part 19 bulges outwardly to form a pouring spout. The carton is of waxed paper or board and its upper end may be gussetted at 12 and sealed at 15 by folding an extended flap of the back wall over the walls, again folding downwardly and pressing, with or without heating.