baber/WOPTO huggingface dataset:
Patent GB-1198614-A (GB)
Title: Improvements in or relating to Solid State Bonding.
Inventor: WHITEHEAD ALAN JAMES
IPC: C04B35/547
Filed: 1966-10-07
Abstract: 1,198,614. Hot pressing powders. PLESSEY CO. Ltd. 10 Oct., 1967 [7 Oct., 1966], No. 44927/66. Heading B5A. Powdered material e.g. infra-red transmitting ceramics such as magnesium fluoride, zinc sulphide, zinc selenide, calcium fluoride, barium sulphide or zinc oxide, is hot-pressed isostatically by filling a capsule having a deformable wall with the powder, supporting the capsule in a pressure vessel, heating and applying fluid pressure to the deformable wall, allowing it to cool, preferably while maintaining the fluid pressure, before removing the capsule from the vessel and the article from the capsule. Heating may be effected by a radio-frequency coil. The capsule may comprise two hemispherical stainless steel spinnings, using boron nitride release agent. Nitrogen or helium gas may be used as the fluid pressure medium.
Patent GB-1300063-A (GB)
Title: Improvements in or relating to flexible-walled bulk materials containers
Inventor: GOULD ALAN MONTAGUE
IPC: B65D90/56
Filed: 1969-09-12
Abstract: 1300063 Flexible skips CROW HAMILTON & CO Ltd 1 Dec 1969 [12 Sept 1969] 45013/69 Heading B8H [Also in Division F2] A flexible slat 1, Fig. 1, supported in a framework 4 has a bottom discharge pipe 1A which is closed by rollers 8, 9 which press together opposite sides of the pipe and are operated by a handle 10 and links 14-17. In a second embodiment one roller 51, Fig. 4, is fixed. Fig. 7 shows an arrangement in which rollers 105 are moved by a screw. Figs. 15, 16 (not shown), illustrate respectively cams and resilient blocks which are moved to close the outlet pipe. Various shapes of skip and other forms of construction are illustrated.
Patent GB-1166276-A (GB)
Title: Novel Monomeric and Polymeric Phosphite Esters and the Phosphate and Thiophosphate Derivatives of the Polymeric Phosphites.
IPC: C08L75/04
Filed: 1966-10-10
Abstract: 1,166,276. Phosphite, phosphate and thiophosphate esters containing carboxylic ester groups. PURE CHEMICALS Ltd. 10 Oct., 1966 [15 Oct., 1965], No. 45161/66. Heading C2C. [Also in Division C3] The invention comprises compounds of the formula wherein R 1 , R 2 , R 3  and R 4  are alkyl, aryl or haloaryl, e.g. C 8 -C 18 alkyl, C 8 -C 12 alkyl phenyl, or halophenyl and a phosphite polymer having a repeating unit of the formulµ wherein R is alkyl, aryl or haloaryl, R 1  is the residue of a dihydric phenol or of a hydrogenated dihydric phenol or dihydric alcohol and n is an integer greater than 1, and also the phosphates and thiophosphates corresponding to the above phosphites. The phosphites (I) may be obtained by reacting one mole of 2,2- dimethyl - 3 - hydroxypropyl - 2,2 - dimethyl- 3-hydroxy-propionate with 2 moles of a trialkyl, triaryl, trihaloaryl, aryl (or haloaryl) dialkyl phosphite or a diaryl (or haloaryl) alkyl phosphite or mixture of such phosphites in the presence of a catalyst (e.g. a dihydrocarbyl or dihaloaryl phosphite or an alkaline material). Phosphites of the type (II) may be obtained by transesterifying 0À8 to 1.2 moles of the ester diol: 2,2-dimethyl-3-hydroxy propyl-2,2-dimethyl - 3 - hydroxypropionate with one mole of (RO) 3 P where the R's are the same or different and are as defined above, equimolar amounts being used to form high molecular weight polymers. Compounds of the type (III) can be obtained by either (1) reacting 0.3 to 1.7  moles, e.g. 1 mole, of the above ester diol with 1 mole of a dihydrocarbyl (e.g. diphenyl or diisodecyl) pentaerythritol diphosphite; or (2) by reacting 1 mole of the ester diol with 1 mixture of 2 moles of a phosphite P(OR) 3  wherein R is alkyl, aryl, or haloaryl and 1 mole of pentaerythritol. Compounds of type IV can be obtained by reacting 0.3 to 1.7 moles, e.g. 1À1 moles, of the above ester diol with a mixture of 1.6 to 2-4 moles, e.g. 2 moles of a phosphite P(OR) 3  wherein R is alkyl, aryl or haloaryl and 1 mole of a dihydric phenol or hydrogenated dihydric phenol or dihydric alcohol. The corresponding phosphates can be obtained by oxidizing the phosphites with air or by controlled oxidation with H 2 O 2  and the corresponding thiophosphates can be obtained by treating the phosphites with sulphur. The phosphite products are useful as stabilizers for vinyl chloride polymers, mono-olefin polymers, rubbers and polyesters and the polymeric phosphates and thiophosphates are useful as plasticizers for vinyl chloride resins and cellulose esters.
Patent GB-1128026-A (GB)
Title: Improvements in or relating to the packaging of cream
Inventor: COULSON PETER
IPC: B65D77/20
Filed: 1965-10-26
Abstract: 1,128,026. Packaging cream. CENTRAL DAIRY (ST. BLAZEY) Ltd. 26 Oct., 1965, No. 45320/65. Heading B8C. [Also in Division A2] A method of packaging clotted cream comprises introducing the cream into a container, scalding the cream in the container and sealing the container with a semi-permeable transparent film. The container is preferably an aluminium tray able to withstand the scalding in a steam bath at 170‹ to 190‹ F. for 30 minutes. The transparent film is preferably of regenerated cellulose and it is heat sealed to the container. After sealing the package is forceably cooled.
Patent GB-1529468-A (GB)
Title: Electroacoustic transducer
IPC: B06B1/06
Filed: 1975-10-31
Abstract: 1529468 Subaqueous transducers THOMSON-CSF 31 Oct 1975 [8 Nov 1974] 45488/75 Heading H4J A sub-aqueous transducer comprises a stack of piezoelectric wafers 10 (Fig. 1) located between a front plate 1 and rear mass 6 and contained within a housing. Mechanical impedances 2, 3, 4 of compliant and inertial type are alternately arranged to form a mechanical acoustic filter which provides acoustic decoupling between the front and rear masses 1, 6. The front mass 1 radiates or receives acoustic signals. Between a rear surface 7 of the front mass and the rear mass 6 are provided three hollow cylinders 2, 3, 4. The cylinders 2, 4 act as mechanical compliances and are formed of filament material, e.g. glass, graphite or boron fibres tangentially arranged and embedded in a binder. The cylinder 3 acts as an inertial mass and is formed of brass or steel. More than three cylinders may be provided. The cylinders also constitute a housing for the piezoelectric wafers 10. These are stacked on a rod 9 passing through the rear mass 6 and held by a counter-mass 5. Rod 9, when tensioned by a nut 11, prestresses the piezoelectric wafers 10. A plurality of such transducers may be arranged on a common base (Fig. 5, not shown). In an alternative arrangement (Fig. 4) the front mass 4, combined rear mass 6 and counter-mass 5 and piezoelectric wafers 10 are arranged in a cylindrical housing 40. The arrangement defines a first toroidal cavity 41 which communicates via an annular passage 42 with a second toroidal cavity 43. The cavities 41, 43 and passage 42 are filled with liquid and a liquid acoustic filter is formed in which the cavities 41, 43 define acoustic compliances and the passage 42 defines an inertial mass. O-ring seals 14, 15 are provided. An expansion chamber 45 connected by a capillary tube 44 to a liquid-filled cavity 440 allows internal and external pressures to be equalized. A passage 46 provides communication between cavities 43 and 440.
Patent GB-1459558-A (GB)
Title: Compound screen for object screening
IPC: G03G15/00
Filed: 1974-10-22
Abstract: 1459558 Half-tone screen XEROX CORP 22 Oct 1974 [23 Oct 1973 (2)] 45582/74 Heading G2M A half-tone screen for use in reflex exposures during electro-photographic processes comprises a clear transparent substrate bearing opaque areas consisting of a repetitive pattern of opaque mixed dots comprising light-absorbing like dots (e.g. black dots) and light-reflecting like dots (e.g. white dots), the average like dot inch frequency being within 50 to 400 dots. The substrate may be a single sheet of transparent material carrying black dots on one side and white dots on the other or may comprise two sheets superimposed one carrying white dots and the other black dots. The black and white dots may each be in rectilinear arrays which may be angled to avoid MoirÚ patterns. In colour processes the dots may be coloured and white instead of black and white. In use, the screen is placed in substantial contact with the original document to be copied and illuminated and the light reflected is passed through a lens system to fall on a photosensitive member, the average like dot inch frequency being such that the lens system employed passes the fundamental spatial frequencies and attenuates the harmonic spatial frequencies.
Patent GB-1097159-A (GB)
Title: Spinnable solutions of acrylonitrile polymers
Inventor: SZITA JENOE
IPC: C08F20/44
Filed: 1966-10-12
Abstract: Spinnable solutions of acrylonitrile polymers are prepared by polymerizing a monomeric material containing 50-100% by weight of acrylonitrile and up to 50% by weight of one or more copolymerisable compounds in an organic solvent for the polymer and in the presence of a catalyst mixture containing (a) a sulphinic acid amide and (b) an organic or inorganic acid and/or an organic peroxy compound.  (The term "organic acid" is used herein to include both carboxylic and sulphonic acids and, also, aromatic disulphonimides of the formula R-SO2-NH-SO2-R1 in which R and R1 each represent an aromatic radical.)  Suitable comonomers include methacrylonitrile, acrylic and methacrylic esters and amides, vinyl esters, styrene and its derivatives, and vinyl and vinylidene chloride, as well as dye-receptive monomers such as styrene sulphonic acid, methacrylamidobenzene-benzene -disulphimide and vinyl pyridine.  The acid comonomers may also serve as the acid component of the catalyst system.  Solvents specified are dimethyl formamide, dimethyl acetamide and dimethylsulphoxide.  Many examples of the sulphinic amide and acid catalyst components are listed; suitable organic peroxy compounds include hydroperoxides, keto-peroxides, acyl peroxides and peresters. Accelerators such as taurine, N-methyltaurine, sulphanilic acid or N-methyl sulphanilic acid may also be present; so too may small quantities of water.  The monomers can contain stabilizers such as thiosemicarbazide, ammonia, hydroquinone and its derivatives.  When the desired conversion has been reached, polymerization can be stopped by the addition of a known inhibitor and/or a concentrated acid.  Filaments and fibres spun from the polymer solutions have a high degree of whiteness.
Patent GB-1389779-A (GB)
Title: Pneumatic percussive tool
IPC: B25D17/12
Filed: 1973-10-03
Abstract: 1389779 Percussive tools INSTITUT GORNOGO DELA SIBIRSKOGO OTDELENIA AKADEMII NAUK SSSR and SVERDLOVSKY ZAVOD "PNEVMOSTROIMACHINA" IMENI ORDZHONIKIDZE 3 Oct 1973 [3 Oct 1972] 46184/73 Heading B4C In a percussive tool in which the handle 25 is depressed to actuate a valve 22 for controlling the air for reciprocating the hammer 4, the exhaust air is led from ports 20 into a manifold 31 and then through slots 33 in the valve housing 8 into a downwardly open cavity having when the handle is depressed a lower part 35 of larger cross-sectional area than an upper part 34 and communicating upwardly with the atmosphere via passages 37 in the handle to permit air from the atmosphere to be drawn through the passages into the flow of exhaust air in the cavity. The arrangement reduces the velocity of air exhausting downwardly from the lower part 35 of the cavity with consequent reduction in noise. The valve housing 8 contains an inlet ball valve 22 operable by a push rod 21 and a cam 29 on the handle, and a valve plate 14 co-operating with valve seats 10, 12 for distributing the air through passages 18 and 19 to the space below the hammer 4 and through ports 16 and 15 to the space above the hammer. The handle is resiliently mounted on the housing by a spring 27 and when pushed downwardly over the housing to the position shown in Figs. 2 and 4, causes the inlet valve 22 to lift through the camming action. The air is first directed through the passages 18 and 19 to lift the hammer. During this upward movement, the hammer closes the exhaust ports 20 and compresses the remaining air before opening the exhaust ports again. The loss of pressure in the passages 18 and 19 and the build up of pressure above the hammer causes the valve plate 14 to lift and seal against the upper seat 12 so that the compressed air from the inlet 23 is now directed through the ports 16 and 15 to drive the hammer downwardly to deliver a blow to a tool 7. During this downward movement, the hammer closes the exhaust ports 20 and compresses the remaining air before opening the exhaust ports again. The loss of pressure in the ports 15 and 16 and the build up of pressure below the hammer causes the valve plate 14 to drop on to the lower seat 10 to initiate the next cycle.
Patent GB-1403265-A (GB)
Title: Portable apparatus for measurement of nuclear radiation
IPC: G01T1/169
Filed: 1972-10-06
Abstract: 1403265 Detecting ionizing radiation G D WHITLOCK 6 Oct 1972 46250/72 Heading G 1 A In a device for detecting ionizing radiation from an article (not shown) having a ring form surface surrounding it, a hermetic seal between the device and the ring form surface is formed by positioning an opaque resilient sealing ring 5 on the ring form surface and depressing an upper part 9 of a telescopic housing included in the device thereby forcing air out of a non return valve 44 so that when the part 6 returns to its original position, under the action of a spring 10, a partial vacuum is formed inside in spaces 12 and 6. Spaces 12 and 6 communicate with one another by means of passages 11 and 21b. A scintillator 13 and a photo-multiplier 17 are in a sealed casing 19 in communication with the atmosphere via a duct 8b so that when the partial vacuum is created the atmospheric pressure causes the casing 19 to move against the action of a spring 14 towards the sealing ring area, that is, after a shutter 21b has been moved out of its path by a solenoid (not shown) activated by a pressure sensitive switch 30.
Patent GB-1074117-A (GB)
Title: Potato chip
Inventor: LOSKA STEPHEN JOSEPH
IPC: A23L19/18
Filed: 1964-11-16
Abstract: A mix, which may be blended with water to give a dough for the production of potato chips, comprises a major proportion of ungelatinised potato powder and a minor proportion of ungelatinised potato starch.  The mix may also contain another ungelatinised edible starch, such as rice, tapioca, or corn starch, and shortening.  The mix may be blended with water to form a dough, which is rolled into a ribbon, subjected to steam and heat to gelatinise the starch, and the dough then dried.  The dried dough may be fried to provide a crisp potato chip.
Patent GB-1049512-A (GB)
Title: Improvements relating to electric switches
Inventor: HAYWARD WILLIAM HERBERT
IPC: H01H9/36
Filed: 1963-11-27
Abstract: 1,049,512. Arc extinguishing in switches; electromagnetic switches. DONOVAN ELECTRICAL CO. Ltd. Oct. 21, 1964 [Nov. 27, 1963], No. 46801/63. Heading H2B. A switch comprising one or more sets of fixed and bridging contacts 10, 14 is provided with a pair of hoods 25 covering its contacts and containing arc extinguishing devices each of which comprises a plurality of spaced steel plates 30 mounted on bars 32, e.g. of resinimpregnated glass fibre, inserted into slots 25 in walls 26 of the hood which serve to separate the several sets of contacts. The plates 30 have crenellated or jagged edges facing the contacts, the projecting portions of adjacent plates being staggered. The arc extinguishing devices are held in place by attaching the last plate 30 to the front wall of the hood. Instead of a plurality of plates a single diecast member may be employed. The switch is electromagnetically operated (Fig. 2, not shown).
Patent GB-1154699-A (GB)
Title: Production of Unsaturated Graft Copolymers from Isobutylene Polymers
Inventor: DAUMILLER GUENTHER
IPC: C08F255/10
Filed: 1966-10-21
Abstract: 1,154,699. Grafted isobutylene polymers. BADISCHE ANILIN- & SODA-FABRIK A.G. 21 Oct., 1966 [23 Oct., 1965], No. 47232/66. Heading C3G. A 1,3-diene is grafted on to the reaction product of a halogenated isobutylene polymer with a Lewis acid. The diene is e.g. butadiene, isoprene or chloroprene; a mixture of a diene with styrene, α-methyl styrene or a vinyl ether such as ethyl, n-propyl, isobutyl or n-hexyl vinyl ether may be used. The isobutylene polymer, which is a homopolymer, or a copolymer of at least 80% isobutylene with butadiene, isoprene, styrene, α-methyl styrene or a vinyl ether, is halogenated conventionally. A list is given of suitable Lewis acids and of Ziegler- Natta catalysts which may be used for the polymerization. The graft polymers may he vulcanized with conventional agents and then compounded with fillers. In Examples 1 and 2 a brominated polyisobutylene is dissolved in toluene and reacted with AlCl 3  prior to grafting with butadiene and isoprene respectively, using Et 3 AlCl and cobalt (II) acetylacetonate as catalyst. Examples 3 to 18 describe processes in which a chlorinated isobutylene-isoprene rubber is dissolved in an n-hexane/toluene mixture and reacted with TiCl 4 , ZrOCl 2 , TiBr 4 , TiI 4 , AlBr 3 , HClO 4 , SnCl 4 , NbCl 5 , TaCl 5 , VCl 4 , MoCl 4 , palladium (II) hydrochloride, gold (III) hydrochloride, platinum (IV) hydrochloride or FeCl 3  and grafted with butadiene using AlEt 3  and cobalt (II) acetylacetonate as catalyst. In Example 19 a brominated isobutyleneisoprene rubber is dissolved in a p-diisopropyl benzene/pentane mixture and grafted with butadiene using AlBr 3  as the Lewis acid and AlEt 3  and chromium (III) acetyl acetonate as catalyst.
Patent GB-1279646-A (GB)
Title: Process for handling perishable materials under controlled temperature conditions
Inventor: TETRICK HARLAN MARSHALL
IPC: F25D17/02
Filed: 1969-09-25
Abstract: 1279646 Transporting cold perishables; warming chambers FREEZ-PORTER SYSTEMS Inc 25 Sept 1969 47239/69 Headings F4H and F4U Frozen foods or other perishables are loaded into insulated containers at a distribution centre and remain in the containers during storage at, and shipment between, the distribution centre and delivery destinctions. To enable the container temperature to be controlled, each container includes a heat exchanger which is connectable to liquid heat transfer circuits provided at the distribution centre, on the shipping means, and at the destinations. The circuits all use the same liquid which has a liquid range extending at least between -29‹ C. and 10‹ C. As illustrated, each container 1 has a heat exchanger formed by a pipe 6 which is in contact with an aluminium liner 14. The ends of the pipe 6 project from the top of the container and are provided with quick release couplings 9. Internal fixed side brackets 23 adjustably mount slides 24 for supporting shelves 25. Each container has a door 5 and is provided with an externally readable thermometer and a failure warning light, Fig. 4 (not shown). A heat transfer circuit for maintaining the container below 0‹ C. during transit and storage is shown on the right hand side of Fig. 2. A refrigeration unit 7, under the control of a thermostat 28 cools the heat transfer liquid which is moved, through the circuit 27 by a pump 26. A liquid reservoir 36 is provided. The containers are connectable to the circuit by the quick-release couplings 9 and flexible pipes 11. Quick release couplings may also be included in the circuit piping 8. If, at a destination, it is required to mellow the container contents, the branch circuit 29 shown on the left hand side of Fig. 2 may be provided. In the branch circuit, a three way valve 34 and a heater 33 are controlled by a thermostat 35, and a pump 32 runs continuously. When required by the thermostat, the valve connects the branch circuit through lines 30 to the main circuit. If the branch circuit is not needed for mellowing the thermostat may be set to cut out the by-pass 31. The pump 32 and heater 33 are de-energized, and the branch circuit then merely acts as an extension of the main circuit. If the frozen food has been precooked and is to be reheated at the destination in the containers, a liquid circuit having a boiler rather than a refrigeration unit may be provided, Fig. 3 (not shown). Preferred heat transfer fluids and operating conditions are set out.
Patent GB-1358583-A (GB)
Title: Gas discharge display panels
IPC: H01J17/49
Filed: 1971-05-28
Abstract: 1358583 Gas discharge display panels BURROUGHS CORP 28 May 1971 [10 June 1970 16 July 1970 5 Oct 1970] 47705/73 Divided out of 1358582 Heading H1D The subject-matter of the Specification is the same as that of the parent Specification but the claims are directed to a multiple position display device in which the main feature is a shield member isolating the segment display electrodes of adjacent positions.
Patent GB-1203034-A (GB)
Title: Improvements in or relating to fishing reels
Inventor: KOSEK JOSEPH
IPC: A01K89/016
Filed: 1966-10-25
Abstract: 1,203,034. Fishing reels. J. KOSEK. 25 Oct., 1967 [25 Oct., 1966], No. 47772/66. Heading A1A. [Also in Division F2] A fishing reel incorporates a handle connected by way of one-way drive mechanism and a clutch to the reel's shaft, but the clutch can be substantially instantaneously released by a manually operable member separate from the handle. This provision is designed to facilitate casting. The shaft 4 is clutched to the spool 16 by radially movable shoes 17 which are urged by weak springs (not shown) away from the interior surface of the spool but are normally held in contact with this surface by a much stronger spring 24 which acts on the tapered rod 21 which in turn urges the balls 19 radially outwards against the shoes. A lever 31, Fig. 3b (not shown), is pivoted about the lower end of the shaft 4 and projects through a slot (not shown) in the reel housing 2. This lever can be turned from a normal to a clutch-releasing position, and in the latter position it acts on a member which lifts the collar 28 surrounding the lower end of the shaft 4. A rod 27 engaged by this collar lifts a rod 25 and with it a rod 21, so releasing the spool for free rotation. Thus the clutch may be totally disengaged for casting but fully engaged for winding in. After casting but before winding in the clutch operates as a line brake, the effect of which is adjustable by turning the head 23 of a screw 22 to vary the tension of the spring 24. An over run brake (not shown), operating during casting, and consisting of a leather member acting on the lower cheek of the spool 16, is operated by the lever which releases the clutch. The drive from the handle 14 to the shaft 4 is through gears 7, 8, 10, 11 which provide a 2:1 ratio between spool speed and handle speed. The boss 12 of the output end gear element 11 carries a resilient projection 41 which can engage one of two arms of a bifurcated lever 43, Fig. 2b (not shown) and in so doing turn a second arm of this lever into or out of a position in which it fouls the gear wheel 7. In the wind-in direction this lever is moved away from the gears, but in the wind-out direction it acts as a brake on the gear train and so prevents driven reverse rotation. Undriven reverse rotation, by slipping of the clutch, is however possible and it is arranged that when this occurs - e.g. when a bite has been made - an audible alarm can be given. The alarm mechanism consists of a star wheel which can mesh with the gear wheel 10 and strike a spring loaded member as it rotates, thus emitting a clicking sound. This star wheel 49, Fig 2b (not shown) can be set in a position out of the path of the teeth in the gear wheel 10 but when the line is left unattended it can be set to produce the alarm should the line be placed under tension.