baber/WOPTO huggingface dataset:
Patent GB-942297-A (GB)
Title: Poly(4-methyl-pentene-1) and articles produced therefrom
Inventor: CLARK KEITH JASPER
IPC: C08F6/06
Filed: 1961-06-22
Abstract: A polymer of 4-methyl-pentene-1 is prepared by polymerizing the monomer under air and moisture-free conditions in the presence of a stereospecific catalyst, and as diluent an inert hydrocarbon liquid, excess of the monomer itself or a chlorinated aromatic hydrocarbon, whereby a separable slurry of poly-4-methyl-pentene-1 is diluent is obtained and then de-ashing the polymer under water-free conditions so that the ash content does not exceed 0.1% by weight of the polymer and the transition metal content of the polymer is below 50 p.p.m. In the de-ashing operation, the slurry or its dispersed polymer content is treated with sufficient of an effective reagent to react with all of the catalyst residues to convert them to products soluble in the liquid medium, then the polymer is washed at least until all visible colour has been removed and finally the polymer is separated from the residual wash liquid.  The polymer obtained has a melting point of 243 DEG C., a melt flow index between 0.01 and 1000, a density of 0.82 to 0.86 g/cc. and can be melt shaped into shaped articles having in 1/8 inch section a clarity of grade 1 and a haze of group 1. Suitable liquid media for the de-ashing step include (a) the dispersion phase of the slurry (including any unreacted reagent plus any other organic solvent which may be added), (b) if the dispersed polymer has previously been separated from the dispersion phase of the slurry, the liquid media may be any unreacted reagent plus any other organic solvent which might have been added to the polymer and any of the dispersion phase of the slurry occluded with the dispersed polymer.  If the medium is primarily hydrocarbon, the higher alcohols, higher acids and higher amines (e.g. carbon chain of at least 8 carbon atoms) may be employed as the de-ashing reagents. e.g. 3,5,5-trimethylhexanol dodecanol, n-nonoic acid and 3,5,5-trimethylhexylamine may be used.  Mixtures of acetyl acetone and isopropylalcohol may also be used. If the medium is primarily a polar one, lower alcohols may be used both as the reagent and as the medium.  Numerous examples are given in which the stereospecific catalysts are selected from TiCl3 with AL(C2H5)2 Cl, LiC4H9, Zn(C4H9)2, AL(C2H5)3, AL(iso-C4H9)3, lithium aluminium butyl triethyl or with aluminium ethyl sesquichloride.  The de-ashing agents are selected from acetylacetone with n-butanol or isopropyl alcohol; n-butanol; isopropanol; nonanol; ethanol; methanol; n-dodecanol; n-nonoic acid; 3,5,5 trimethylhexylamine; 3,5,5 trimethylhexanol and acetyl acetone.  The washing medium is preferably a water-free organic liquid.  In some examples, alcohols e.g. methanol, ethanol, isopropanol, butanol and nonanol, are used both as the de-ashing reagent and as the washing agent. Shaped articles may be produced from the polymers by the usual processes.  Specifications 789,781, 808,144, 821,634, 877,050 and 940,145 are referred to.
Patent GB-1473972-A (GB)
Title: Mouldable and extrudable polyether-ester-amide block copolymers
IPC: D01F6/82
Filed: 1975-05-23
Abstract: 1473972 Polyetheresteramides ATO CHIMIE 23 May 1975 [31 May 1974] 22725/75 Heading C3R Mouldable and extrudable polyetheresteramides of intrinsic viscosity at least 0À8 (0À8 g./dl. in metacresol at 25 C.) and having repeating units -CO-A-CO-O-B-O-, where A is a polyamide sequence and B a linear or branched aliphatic polyalkylene ether sequence with at least 2 carbons per alkylene group are obtained by reacting a diCOOH- terminated polyamide of average M.W. 300 to 15,000 with an OH-terminated polyoxyalkylene glycol of average M.W. 200 to 6000, reaction being effected in the fused state at 100 to 400 C. and below 5 mm. pressure in the presence of 0À01 to 5 wt. per cent of a catalyst Ti(OR) 4 , where R is a C 1-24  aliphatic hydrocarbon radical, or a combination thereof with an alkaline or alkaline earth alcoholate. Various polyamides, polyethers and catalysts are mentioned and in specific examples the following are used: polyamides-6, 11, 12, 6/9, 6/10 and 6/12 (all prepared in the presence of adipic acid to control M.W. and ensure COOH termination); polyethers-polyoxy - ethylene-, -propylene-, -tetramethylene- and -ethylene/propyleneglycols; catalysts-tetra-butyl or -isopropyl titanate or blends of the former with Na or Mg butoxide. Conventional additives may be incorporated in the polymer, e.g. antioxidants, heat and light stabilizers, fire-proofing agents and pigments.
Patent GB-699550-A (GB)
Title: Improvements in housing arrangements for electrical components
Inventor: MAKINSON JAMES HENRY
IPC: H05K5/04
Filed: 1951-09-29
Abstract: 699,550. Mounting arrangements. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Sept. 16, 1952 [Sept. 29, 1951], No. 22786/51. Class 40 (iv). In an arrangement for housing electrical components, a shelf member 16 of insulating material having a plate 17 at each end is made to nest in the open end of a sheet steel can so that the end-plates 17 close recesses in sides 11 of the box. Components are attached to the underside of the shelf member which carries terminals 24 for the completion of electrical connections and has two holes with centres at 26, 27 through which hot impregnating wax may be poured after assembly. The assembly described is that of a filter, and external connections are made by a terminal block 20 screwed to each end-plate. Trimming and padding condensers are connected across terminals 24 after assembly of the main components and these too are covered with impregnating wax before the lid 28 is secured by tongues 19 in slots 29.
Patent GB-908980-A (GB)
Title: Method and apparatus for straightening discs
IPC: B21D1/10
Filed: 1960-06-29
Abstract: 908,980. Straightening warped discs. LAMBERT BRAKE CORPORATION. June 29, 1960 [July 6, 1959], No. 22790/60. Class 83 (4). An apparatus for straightening a disc mounted in a plane substantially perpendicular to a predetermined axis and including rollers extending generally radially with respect to said axis and engageable with opposite sides of the disc at offset locations also includes first and second body members presenting bearing surfaces engaging and supporting rollers at opposite sides of the disc, said body members and the rollers being rotatable relative to each other around said axis, and first and second cage members respectively associated with and rotatable relative to said first and second body members for retaining rollers at opposite sides of the disc against said body members while presenting portions of the rollers for engagement with the disc. A warped disc 28 having splined washers secured at opposite sides thereof is held against rotation on a splined ring 86 secured to one end of a non-rotary hydraulic ram 20. The disc 28 is straightened by the flexing action of four upper rollers 42 and four offset lower rollers 74, frictionally driven around the disc by the rotation of frusto-conical bearing surfaces 38, 70 formed on body members 34, 58, rotated by a shaft 18, fingers 90 on the body 34 engaging fingers 92 on the body 58 to drive the latter. The rollers 42 are spaced by a cage 44 and the rollers 74 by a cage 76, interengaging fingers 96, 94 on the cages ensuring their proper relative positions. The body member 58 is rotatably supported on the ram 20 which is raised to position the disc until the desired pressure between the disc and the rollers has been attained. Instead of the body members 34, 58 the disc 28 could be rotated. Specification 583,108 is referred to.
Patent GB-967478-A (GB)
Title: Self-sealing organo-polysiloxane compositions
Filed: 1962-06-14
Abstract: A moisture-resistant, self-sealing siloxane composition comprises a diorganopolysiloxane, a filler, a peroxidic or other curing agent and a boron compound selected from boron hydride and an N-alkyl-substituted borazane, borazene or borazine.  The boron compound is used in an amount of 0.02 to 10% by weight of the composition, and may be added to the other ingredients or to the low molecular weight siloxanes prior to their polymerization to convertible siloxanes.  Fillers specified are silica, Kiesel-guhr, quartz, alumina, titania and zinc and iron oxides. In typical examples (1) the siloxane obtained by polymerizing a,o -dihydroxy dimethylpolysiloxane with N-triethyl-borazane, was mixed with silica and bis-(2,4-dichlorobenzoyl) -peroxide and subsequently heat cured: (2) a copolymer comprising dimethyl- and methylvinyl-siloxane units was mixed with silica, iron oxide, bis-(2,4-dichlorobenzoyl)-peroxide and N-dimethylborazane.
Patent GB-842707-A (GB)
Title: Transparency illuminator
IPC: G02B27/02
Filed: 1956-07-25
Abstract: 842,707. Signs. EVANS, O. (De Montebello, R.). July 25, 1956, No. 22962/56. Class 3(2) [Also in Group XX] An illuminated box sign incorporates a curved reflector 11, 26 which is moulded from synthetic plastic material and given a predetermined curvature in order to secure uniform illumination of the display matter. The reflector may be made of suitable reflecting material or else covered with metal foil. A bank of lamps or a fluorescent lamp 20 controlled by a switch 31 is provided together with a wire support 33, 34 which is pivoted to the box in order to retain same in the vertical or horizontal position, 38 being a locking device for said support. Transparencies or translucencies 45 are mounted on or in the place of the glass panel 15 and may be provided with opaque light-reflecting portions 46 on their rear. Specification 689,231 is referred to.
Patent GB-1349722-A (GB)
Title: Target simulator for an optical aiming sight
IPC: F41G7/00
Filed: 1971-04-19
Abstract: 1349722 Sights BOFORS AB 19 April 1971 [6 March 1970] 22966/71 Heading F3C A target simulator for an optical aiming sight 1 for simulating a moving target for training purposes, comprises a cathode-ray tube 10, Fig. 1, having a display screen 13, a symbol generator 14 to produce a luminous, target simulating symbol on the screen 13 and deflecting plates 10X, 10Y for moving the target simulating symbol relative to a centre on the screen 13 as a function of signals supplied to the deflecting plates. The simulator also comprises a target course generator 19 for generating a signal which varies in a predetermined manner, the signal being applied to the deflecting plates 10X, 10Y to move the target simulating symbol over the screen 13. An oblique semi-translucent mirror 12 is provided to reflect an image of the screen 13 into the field of view of the aiming sight 1, the centre point of the screen 13 coinciding with a line of sight 9 of the aiming sight, and signal generators 21, 22 are provided which are coupled to the azimuth axis and the elevation axis respectively of the aiming sight 1. The generators 21, 22 produce direct voltage signals representing the angular movements of the line of sight 9 in azimuth and elevation respectively. The signals are passed, through signal-adding circuits 17, 18 respectively, to the deflection plates 10X, 10Y. The polarities of the signals are such that any movement of the line of sight 9 relative to the ambient space causes an opposite displacement of the target simulating symbol on the screen 13. An additional cathode-ray tube 23, having a display screen 24, a generator 27 and deflection plates 23X, 23Y, may be provided so that the movements of the target simulating symbol can be viewed by a training instructor. A graphic or digital typing recorder 28 may be provided and connected to the circuits 17, 18 to record the amplitude of the signals as a function of time. The generator 14 may be controlled by the target course generator 19 so as to vary the size of the target simulating symbol in accordance with the distance from the sight of the target simulated by the target source generator 19. In a modification two angular velocity responsive gyros G s , G h , Fig. 2 (not shown), are mounted in an aiming sight so as to be responsive to the angular velocity in azimuth and in elevation of a line of sight 36 and to produce signals proportional to the angular velocities. The signals from the gyros G s , Gh are supplied to deflection plates 47X, 50X and 47Y, 50Y respectively by means of signal adding circuits 55, 56 and 58, Fig. 3 (not shown).
Patent GB-888847-A (GB)
Title: A directly heated cathode wire
IPC: H01J1/16
Filed: 1958-07-18
Abstract: 888,847. Thermionic cathode constructions. TESLA, NARODNI PODNIK. July 18, 1958 [July 29, 1957], No. 23132/58. Class 39(1) A directly heated cathode consists of a wire having a central portion 1 of uniform diameter, and gradually tapering end portions. The length of each tapering portion 2-3 and 2-4 is less than the length of the wire over which there will be a perceptible cooling effect due to direct conduction to the end supports of the cathode.
Patent GB-1017938-A (GB)
Title: Process for the production of organic acetates
IPC: B01J31/04
Filed: 1964-06-04
Abstract: Organic acetates are obtained by reacting an olefin or an alkyl benzene with oxygen and acetic acid at an elevated temperature in the gaseous phase in the presence of a palladium metal catalyst which contains an alkali metal acetate and/or an alkaline earth metal acetate, the catalyst mixture being formed before it is placed in the reaction zone.  Specified starting materials are ethylene, propylene, isobutylene, toluene and xylene.  The reactants are preferably used in a concentrated form.  Suitable temperatures are in the range 100-180 DEG  C.  The catalyst is preferably supported on a carrier, e.g. aluminium oxide.  Examples relate to the preparation of vinyl, allyl and benzyl acetates.ALSO:Catalysts comprising palladium metal and an alkali metal acetate and/or alkaline earth metal acetate are used in the reaction of an olefin with oxygen and acetic acid to yield acetates.  The catalyst may be supported on a carrier, e.g. aluminium oxide.  The catalyst may be applied to the carrier by impregnation with an aqueous palladium salt solution followed by reduction, e.g. with hydrazine hydrate and treatment with an aqueous solution of the alkali metal and/or alkaline earth metal acetate.
Patent GB-485647-A (GB)
Title: Improvements in devices for delivering measured quantities of granular or liquid substances
IPC: B65D47/24
Filed: 1936-08-24
Abstract: 485,647. Powder and liquid sprinklers. BERGERIOUX, R. Aug. 24, 1936, No. 23207. Void. Convention date, Aug. 23, 1935. [Classes 18 and 125 (iii)] A sprinkler for powders or liquids comprises a receptacle 1, Fig. 1, with a discharge opening controlled by a valve 4 to which an operating lever 7 is secured. The valve may be ball- or cone-shaped, and the lever is pivoted on a flat spring 6 or on a rod carrying a coil spring which presses the lever against a nut on the outer end of the rod. In a modification, the operating lever 14, Fig. 4, passes through a flexible diaphragm 15 and it is connected to a plate 12 on a rod 11, the other end of the rod carrying the valve 4. A spring 13 keeps the valve closed.
Patent GB-762909-A (GB)
Title: Anti-slip device for a ladder
IPC: E06C7/42
Filed: 1954-08-11
Abstract: 762,909. Ladders. TURNER, A. G. March 9, 1955 [Aug. 11, 1954], No. 23304/54. Class 20(2) A prop 13 for preventing the foot of a ladder slipping is mounted at an angle to the ladder on a runner 10 by a clamp 12 in which the prop can be adjusted axially against the ground.
Patent GB-831234-A (GB)
Title: Method and means for protecting operators against defective insulation of electric domestic appliances
IPC: H02H9/04
Filed: 1957-07-23
Abstract: 831,234. Protective cut-out arrangements. LERICHE (nee GIRARDOT), M. M. T. July 23, 1957 [July 23, 1956], No. 23304/57. Class 38 (5). [Also in Group XXXV] An arrangement for protecting the operator of electric appliances against shock comprises a dielectric element 6 mounted between conductive electrodes 7, 9 which are connected respectively to the appliance casing 8 and the neutral conductor 5 of the supply 4, 5. The appliance may be earthed. If a fault occurs, at, say, 12 and the voltage on the casing exceeds the dielectric strength of element 6, breakdown will occur connecting the casing 8 to the neutral 5 thus causing a fault current to blow a fuse 3. The dielectric strength of element 6 is below the voltage of the supply. The element may be formed from aluminium coated with a predetermined thickness of aluminium oxide, or from a sheet of mica or paper clamped between two electrodes, which may be of copper, giving a breakdown voltage of about 30 for a supply of 110 volts.
Patent GB-775117-A (GB)
Title: Improvements in or relating to television systems
Inventor: WALLS WALTER RICHARD
IPC: H04N3/34
Filed: 1954-08-12
Abstract: 775,117. Automatic frequency and phase control. CINEMA-TELEVISION, Ltd. Aug. 11, 1955 [Aug. 12, 1954], No. 23430/54. Class 38 (4). [Also in Group XL (b)] In television apparatus such as the flying- spot microscope illustrated, wherein the scanning is effected under the control of two oscillators 18, 19 whose frequencies (of the order of 4.5 kc/s) differ by a small frequency, e.g. 12.5 c/s, whereby the scanning is effected along paths inclined at approximately 45 degrees to the boundaries of the scanned area, the picture repeating at the difference frequency, the picture repetition frequency is controlled so as to have an integral relation with the power supply frequency. As shown, a beat signal having the difference of the frequencies of the two oscillators is derived in mixer circuit 20, multiplied to 50 c/s in circuit 21 and then compared with a signal from the power supply in phase comparison circuit 22 to derive a control voltage which operates to reduce any phase difference by varying the frequency of oscillator 19. The fluorescent screen of display tube 12 may have a delay characteristic of 200 seconds.
Patent GB-813969-A (GB)
Title: Process for the preparation of mixtures of surface-active agents and of compositions containing these mixtures
IPC: C11D1/831
Filed: 1957-07-24
Abstract: A detergent composition comprises a mixture of (a) an alkylphenol polyglycol ether having 7-9 carbon atoms in the alkyl group and 8-10 ether groups per molecule, with (b) not more than 3 times as much of a mixture of water-soluble alkylbenzene sulphonates having 8 and/or 9 carbon atoms in the alkyl group. The composition generally also includes (c) alkylbenzene sulphonates with 10-13 carbon atoms in the alkyl group; and (d) not more than 30 per cent by weight of water-soluble sec. alkyl sulphates having 8-18 carbon atoms in the alkyl group.
Patent GB-314004-A (GB)
Title: Improvements in oxy-chloride cements and methods of making the same
IPC: C04B9/20
Filed: 1928-08-14
Abstract: 314,004. Baxter, J., and Fletcher, H. P. June, 21, 1928, [Convention date]. Plastic compositions containing oxychlorides. - Magnesium chloride solution used in the manufacture of oxychlorde cement is treated with an oxidizing agent such as a permanganate solution to convert some or all of the chloride into oxychloride before being mixed with magnesia, in the usual manner. The presence of uncombined chloride in the resulting cement is thus avoided. The residue from salt works usually consisting of sodium and magnesium chlorides and magnesium sulphate may be employed, in which case the solution is treated with caustic soda or carbon dioxide to eliminate the sulphate.
Patent GB-387405-A (GB)
Title: Improvements in and relating to filters for vacuum cleaners
IPC: A47L9/12
Filed: 1931-08-20
Abstract: 387,405. Filters for vacuum cleaners. AKTIESELSKABET FISKER & NIELSEN, and FISKER, P. A., 30, Peter Bangsvej, Copenhagen. Aug. 20, 1931, No. 23486. [Classes 8 (i) and 8 (ii).] A filter 6 of the kind which projects into the dust container 1 and filters dust at its outer surface and which may be turned inside out in situ for cleaning purposes is provided with an inner filtering portion 10 extending half-way through the outer portion. The filter is detachably connected to a ring f secured to the casing 2. Specification 246,039, [Class 8(ii) Air and gases, Treating &c.], is referred to.
Patent GB-282855-A (GB)
Title: Improvements relating to liquid meters
IPC: G01F15/10
Filed: 1926-09-23
Abstract: 282,855. Thorp, F., and Parkinson & Cowan (Gas Meters), Ltd. Sept. 23, 1926. Governing and regulating meters. - In order to prevent damage to moving parts and to maintain a constant difference between the inlet and outlet pressures, the outlet of a meter is provided with automatic throttling means. The outlet valve a, Fig. 1, is controlled by a spring h, and diaphragm c acted on by the pressures. In another form, the valve m, Fig. 4, is connected to an impact plate k acted on by a spring l, the plate k being adapted to serve also as a back-pressure valve.
Patent GB-201792-A (GB)
Title: Improvements in and relating to aircraft propellers
IPC: B21D53/78
Filed: 1922-08-30
Abstract: 201,792. Davies, D. M., (trading as Falcon Airscrew Co.). Aug. 30, 1922. Screw propellers.-Blades of air screws are provided with a reinforcement or covering for the leading edge made in independent sections. Metal clips 1, have tapered wings 2, 3 joined by straight edges 4 and are secured, with small gaps, by screws to the leading edges of the blades 5. The outer clip may be extended to embrace the tip 8. The clips may be stamped out separately or a number stamped on a strip and afterward separated.
Patent GB-338945-A (GB)
Title: Improvements relating to mixing apparatus
IPC: G05D11/00
Filed: 1929-08-01
Abstract: 338,945. Pickard, J. A. Aug. 1, 1929. Mixing fluids in flow.-Apparatus for mixing an extraneous material with a stream of liquid and taking observations of the effect, comprises a main stream conduit with a control cock, a shunt circuit round the cock including a hopper for the material, and a sighting device in the main conduit at, or beyond, the delivery junction of the shunt circuit; the apparatus may be employed for supplying filter aid to beer passing to a filter. The main conduit 1, having a cock 2, and sighting device 21, passes the main stream to the filter 15, the filter aid being fed from a glass chamber 6 provided with discharge pipe 7 connected to the main near the sighting device, and with another connection 3 to the main on the other side of the main cock 2. The pipes 3, 7 are provided with cocks 5 and 8, and the chamber 6 can be supplied through a. pipe 11, a drainage cock 13 being provided.
Patent GB-820314-A (GB)
Title: Air extracting and sealing device
IPC: B65B31/06
Filed: 1957-07-26
Abstract: 820,314. Sealing cans &c. MOORE, G. A., and BRESKIN, C. A. July 26, 1957 [Aug. 14, 1956], No. 23696/57. Class 49. [Also in Group XXVIII] Air is extracted from containers, packed e.g. with meat, and the containers are then sealed, by a device having exterior surface portions 33 converging to form a blunt edge 29 and an interior cavity 27 opening through an elongated slot in a portion of the blunt edge, suction passages 35 connecting the interior cavity 27 with the surface portions 33 of the device, and means 34 for connecting the cavity to a source of vacuum so that when a packed container a has its mouth b engaged over the surface portions 33 to close the outer ends of the suction passages 35, the vacuum in the cavity evacuates air from the container through the slot in the blunt edge and causes the mouth of the container to form an airtight seal with the surface portions 33, after which heat-sealing irons 5a are moved together to form a heat-sealed seam 41. In a modification, air evacuated from the container is replaced by an inert gas before sealing, e.g. nitrogen or carbon dioxide, in which case means 34 is connected to a vacuum pump and to a source of inert gas, and clamps 45 may be used to prevent disengagement of the mouth b from the portions 33 when inert gas is admitted into the container after removal of air.