baber/WOPTO huggingface dataset:
Patent GB-818345-A (GB)
Title: Improvements in or relating to the measurement of surface texture and apparatus therefor
Inventor: BARBER CLIFFORD CHARLES
IPC: G01B7/34
Filed: 1956-08-03
Abstract: 818,345. Electric tests. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 1, 1957 [Aug. 3, 1956], No. 23962/56. Class 37. A probe for measuring surface roughness comprises an electric condenser which, when close to the surface, forms an electric condenser with it, and which is mounted in an insulating housing having a rim which extends beyond the conductor the whole being mounted in a probe holder which contains means for urging the rim into engagement with the surface while leaving the probe free to tilt so that the rim can level itself on the surface. In the arrangement shown, the conductor 12 has a cylindrical centre and reduced ends and is clamped in insulating housing 13 by a nut clamping on insulating washer 18. The end 13a of the housing extends below the conductor which is thus spaced from the surface under examination. To maintain the probe in contact with the surface, while allowing it to tilt a spring 21 fastened to the probe holder 18 presses a ball 20 into engagement with a member attached to housing 13 and extending into electrode 12. In a further arrangement (Fig. 7, not shown), the central conductor is provided with two bores at right angles to its axis and to each other. One houses a rotatable pin having a central flat and the other a spring which presses a ball on to the flat. Fig. 8 shows a further arrangement in which the electrode 42 is mounted in an insulator 43, 44 on which bear a pair of springs 45. The capacity changes of the probe may be used to control the frequency output of an oscillator which, either heterodyned with a fixed frequency and the beat frequency measured or measured in a bridge circuit.
Patent GB-307898-A (GB)
Title: Improvements in or relating to jacketed vulcanizing molds
IPC: B29D30/06
Filed: 1928-08-21
Abstract: 307,898. Firestone Tyre & Rubber Co. (1922), Ltd., (Assignees of Brown, R. W.). March 16, 1928, [Convention date]. Vulcanizing-moulds, -presses.-In a jacketed vulcanizing-mould, particularly for tyres, one of the mould-sections is flexibly carried by its jacket so as to be pressed against the other section by the pressure of the fluid heating medium. The lower section 11 is connected by a flexible portion 27 to the jacket 10, the relative movement between the parts 10, 11 being limited by stops 28. The joint between the two parts is sealed by a flexible diaphragm 29 backed by pressureresisting plates 30. The upper section 12 is held down on the lower section by a clamping ring 15 carried on the lower section, the ring and upper section having corresponding lugs 16, 17 which are brought into and out of register by rotation of the ring by a rack and pinion. A number of moulds may be arranged in a row, the upper sections being lifted by an hydraulic jack adapted to run along a track at the sides of the moulds.
Patent GB-312004-A (GB)
Title: Improvements in and relating to the preparation of shaded drawings, designs and the like
IPC: G03F1/00
Filed: 1928-08-21
Abstract: 312,004. Wade, S. E., and Wade Transfer Co. Proprietary, Ltd. Aug. 21, 1928. Transfers.-Transfer sheets for use in the ornamentation of surfaces, shading of drawings for photographic reproduction in the preparation of photomechanical printing- surfaces, or the production of drawings, designs, letterpress, and the like, consist of thin, transparent, smooth-surfaced material, printed on one side only, and the sheet is of a material and the ink of a composition such that the printing may be transferred to a desired surface by pressure on the unprinted side of the sheet. The sheet is preferably formed of thin paper coated or impregnated with wax, and the ink includes a. material, such as castor oil, glycerine, or lard, which prevents it from drying on or penetrating into the transfer sheet; when employed for the shading of drawings for photographic reproduction, the ink includes also carbon black to render it photographically black. The sheets 2 are preferably mounted in frames of cardboard, papier mÔchÚ, wood, or the like 10 either by the adhesiveness imparted by the wax coating or by means of a second frame 9 fitting inside the frame 10. The inked surface 3 is arranged so that it is spaced from the surface to be decorated, or from adjacent sheets when stored. When a design is applied to surfaces of glass, china, or other material, it can be covered with gold or silver leaf, and subsequently coated with size or varnish. The ink preferably consists of carbon black and slow-drying castor or mineral oil, together with sulphate of quinine if the transfer is to be used in a photographic process.
Patent GB-1469123-A (GB)
Title: Gyrocompasses
IPC: G01C19/38
Filed: 1974-05-30
Abstract: 1469123 Gyrocompass TOKYO KEIKI KK 30 May 1974 [31 May 1973] 24097/74 Heading G1C A gyrocompass comprises a housing 1a, a gyro case within the housing 1a and accommodating a gyro rotor, and a first follow up arrangement for following up the gyro case and including a follow up ring 14, follow up shafts 3, 3' attached to the ring 14, a follow up servomotor 6 mounted on the housing 1a and gears 5, 8 coupling the servomotor 6 to one of the follow up shafts 3, 3'. A second follow up arrangement is mounted to the housing 1a and is responsive to the position of one of the follow up shafts 3, 3' for following up the first follow up arrangement. As described, the second arrangement comprises an electric pick-up 10, gears and a servomotor 13, the pick-up 10 detecting displacement between shaft 3 and gear 5. The signal resulting from the pick-up 10 is processed by an amplifier (12) Fig. 3 (not shown) and, if required, by a correction circuit (11) for speed and latitude errors before being applied to the servomotor 6. The gear 5, and hence compass card 16, is thereby rotated until a null signal from the pick-up 10 is achieved so as to indicate the true azimuth. The gear 5 is meshed with a gear 9 coupled to a signal generator 7 via a shaft 7a. Thus the output from the signal generator 7 is also indicative of the true azimuth and is supplied to repeaters (not shown).
Patent GB-661886-A (GB)
Title: A process for the disintegration of conglomerates of polymer particles
IPC: C08J3/12
Filed: 1948-09-14
Abstract: Water-containing conglomerates of polymer particles, e.g. of polyvinyl chloride, are disintegrated, e.g. to a fine powder, by passing the conglomerates through a rotating drum with a horizontal or slightly inclined shaft in an atmosphere of low relative humidity, e.g. a current of air heated to 80 DEG  C.  The polymer particles after removal from the drum, e.g. by suction, may be dried and sintered, i.e. the surfaces of the particles partially softened. Specification 661,881 is referred to.
Patent GB-595412-A (GB)
Title: Improvements in clamps for coupling wire ropes
IPC: F16G11/06
Filed: 1944-12-04
Abstract: 595,412. Rope couplings ; clamps. WIGGIN, W., WIGGIN, W. C. B., and WIGGIN, A. L. Dec. 4, 1944, No. 24142. [Classes 44 and 109] [Also in Group XXX] In a clamp for wire ropes, comprising clamping members B, C, an intermediate link - like member D, and a U-bolt or bolt A, or plain bolt, the opposed surfaces of the members are waved, or provided with complementary grooves b<1>, c<1>, and projections b, c, d<2>, which distort the ropes within the clamp. In each projection is formed a semi-circular ropereceiving notch,
Patent GB-1520977-A (GB)
Title: Handle for a dental implement
IPC: A61C1/05
Filed: 1976-06-10
Abstract: 1520977 Dental handpieces SIEMENS AG 10 June 1976 [24 July 1975] 24164/76 Heading A5R A handle I for a dental implement comprises two interconnected coaxial members which are rotatable relative to each other about the longitudinal axis 11 of the handle, the first said member having a free end adapted for connection to a tool element such as a turbine-driven drill 5, and the second said member having a free end adapted for rigid connection to a fluid supply line 7, fluid being conveyed from the supply line to the tool element through flexible tubes 18a, 18b, 18c within the handle, the dimensions of the handle being such that the outer surface of said first member contributes from one third to two thirds of the total length L of the handle. In use, compressed air to drive the turbine, cooling air and cooling water may be delivered to the tool element through the tubes 18c, 18b and 18a respectively and thence through corresponding channels 17c, 17b and 17a in an angle piece 15 which forms part of said first member. The flow of fluid through the tube 18a is controlled by a valve body 20 which in combination with an eccentrically mounted rotatable ring 22 forms a valve of the type described in Specification 1424715. The relative rotation of the first and second members is limited by the engagement of a pin 29 extending from the inner surface of the second member in an incomplete circumferential groove 30 in a cylindrical extension 26 of the first member.
Patent GB-1515304-A (GB)
Title: Optical waveguides
IPC: G02B6/02
Filed: 1974-05-31
Abstract: 1515304 Optical waveguides NATIONAL RESEARCH DEVELOPMENT CORP 23 May 1975 [31 May 1974 7 Aug 1974 30 Dec 1974] 24177/74 34813 and 55999 Heading C1M An optical waveguide comprises a core glass formed of P 2 O 5  and SiO 2  and a cladding glass, of lower refractive index, which contains less, or no, P 2 O 5 . The core may comprise SiO 2 , P 2 O 5  (e.g. in amount 4-40% by weight), and, optionally, GeO 2 , TiO 2 , or an oxide of B, Al, Sb, As or Bi. The cladding may be of silica glass or borosilicate glass. Preferably the wave guide is prepared by bubbling O 2  (3) through POCl 3  (1) and SiCl 4  (2) to form a vapour mixture, which mixture is passed through silica tube 10 and reacts therein to form a SiO 2 /P 2 O 5  mixture which is deposited as a glass on the tube interior. The tube 10 is heated to 1250-1550‹C by heater 11, through which the tube 10 passes, to cause the reaction and deposition. Several coatings may be applied by passing the tube 10 repeatedly through heater 11, preferably while varying the composition of the vapour mixture in order to gradually increase the core refractive index and produce a graded-index waveguide. The coated tube 10 may then be collapsed to a rod, preferably while rotating the tube 10, the rod then being drawn down to a fibre waveguide. The tube is preferably collapsed by moving a hot zone along the tube, the collapsed portion of the tube then being cooled by air jets to stabilize. Excess pressure may be maintained in the bore of the tube 10 while it is collapsed, in order to maintain its circularity. In a preferred embodiment, a layer of borosilicate glass 32 is applied to the inside of a silica tube 33 (e.g. using an oxygen/BCl 3 /SiCl 4  mixture) before applying the layers constituting core glass 31, so that the borosilicate layer 32 forms the cladding.
Patent GB-665530-A (GB)
Title: Electric recording apparatus
IPC: G01D15/08
Filed: 1949-09-20
Abstract: 665,530. Echo-sounding and distancemeasuring device. BENDIX AVIATION COREORATION. Sept. 20, 1949. [Nov. 12, 1948] No. 24188/49. Drawings to Specification. Class 118 (i). [Also in Group XIX] An echo-sounding depth recorder as described in Specification 666,263, comprises a stylus riding in a groove between a record strip where it is guided over a rod and a conductive element, a mark being produced when a discharge takes place from the stylus to the element (see Group XIX).
Patent GB-937807-A (GB)
Title: Heat-shrinkable polyolefin sheet structures
IPC: C08L23/06
Filed: 1962-06-25
Abstract: A biaxially-oriented heat-shrinkable film is made by forming a film from a homogeneous blend of (1) 50-90%, based on the total weight of the blend, of a low density polymer of ethylene, or copolymers of ethylene with olefinically unsaturated monomers copolymerizable therewith, said polymer having a density of 0,91-0,93 gms./c.c. at 25 DEG C., and (2) 50-10%, of a high density linear polymer of ethylene or linear copolymers of ethylene with olefinically unsaturated monomers copolymerizable therewith to form linear copolymers, said high density linear polymer having a density of 0,94-0,98 gms./c.c. at 25 DEG C., stretching the film in each of two mutually perpendicular directions in the plane of the film to at least three times the original dimension of the film in each direction at a temperature between 90 DEG  and 130 DEG C., and cooling the film. Preferably the low density polymer constitutes 70-85%, especially at least 75%, of the total weight of the blend.  The low density polymer may be a branched chain polyethylene, especially of density 0,91-0,925 gms./c.c. at 25 DEG C., and the high density polymer may be a linear polyethylene, especially of density 0,94-0,975 gms./c.c. at 25 DEG C.  The low density polymer may also comprise in whole or in part, copolymers of ethylene with vinyl acetate, methyl methacrylate, ethyl acrylate, styrene, vinyl methyl ether, diisobutylene, methacrylic acid and acrylonitrile, and the high density polymers may comprise, in place of, or in addition to the linear homopolymers of ethylene, linear copolymers thereof, for example alphaolefins with 3-20 carbon atoms, e.g. propylene, n-butene-1, n-pentene-1, n-hexene-1, n-heptene-1, n-octene-1, n-decene-1, 4-methyl-pentene-1, n-tetradecene-1 and n-octadecene-1, as well as mixtures of certain of these monomers, e.g. heptene-1/octene-1/nonene-1 mixtures.  The film may be stretched at a temperature of 100 DEG -110 DEG C., and from 3-7 times its original dimension in each direction.  The stretch in one direction may be at least five times the original dimension of the film in said direction.  Shrinkage tension of film so made may be in excess of 175 gms./sq. inch at 100 DEG C.  For details of the application of the invention to the production of shrinkable nets (see Group VIII); for the application of the invention to packaging (see Group XVII). U.S.A. Specifications 2,461,975 and 2,919,467 are referred to.
Patent GB-277677-A (GB)
IPC: B29B17/02
Filed: 1927-09-15
Abstract: 277,677. Caillaud, E. A. A. G. Sept 17. 1926, [Convention date]. Splitting-apparatus. - In a band-saw machine for splitting pneumatic-tyre fabric &c. the material is fed over an adjustable flat pivoted table by slantingly-grooved feed-rollers. The saw works between guides 18 shaped to convey water to the blade by channels 19, 22.
Patent GB-1064515-A (GB)
Title: A method of bonding aluminium or an alloy thereof to stainless steel
IPC: B23K20/227
Filed: 1964-06-11
Abstract: 1,064,515. Making composite metal, rolling. REYNOLDS METALS CO. June 11, 1964 [June 28, 1963], No. 24311/64. Headings B3A and B3M. A method of bonding aluminium or an aluminium base alloy to stainless steel comprises roughening the bonding surface of the aluminium or alloy and rolling the roughened surface against the stainless steel while maintaining the aluminium or alloy at a temperature at least 450 F. higher than that of the steel. The aluminium surface is roughened by wire brushing, sanding, grinding or like methods and a chemical dip may also be employed. The steel surface may also be similarly roughened. It is first subjected to conventional degreasing and may be annealed. The aluminium is heated to a temperature of between 600 F. and 1200 F. and the steel maintained at ambient temperature or a temperature not exceeding 450 F. Preferably the aluminium is heated to 1000 F. and rolled against the steel at ambient temperature, reducing the aluminium thickness to about 20% to 40% in a single pass. Owing to the temperature differential the oxide films are ruptured to give a firm preliminary bonding. The bonded composite is reheated to between 500 F. and 975 F. for at least five minutes. The rate of heating, temperature and time of heating may be varied between wide limits. In a modification the stainless steel may be covered with aluminium foil prior to rolling.
Patent GB-1193606-A (GB)
Title: Phosphor and Method of Making.
Inventor: SHAFFER FRANCIS NATHAN
IPC: C09K11/77
Filed: 1969-05-13
Abstract: 1,193,606. Luminescent materials. SYLVANIA ELECTRIC PRODUCTS Inc. 13 May, 1969 [16 May, 1968], No. 24398/69. Heading C4S. A phosphor comprises YP04 activated by Sb or Sb and Tb. These have a formula where 0À3 # a # 0 and preferably 0À3 # x # 0À0005. Sb activated phosphors are prepared by heating mixtures of Y nitrate, oxide, acetate, oxalate, tartrate or phosphate with a decomposable Sb compound and a phosphate or phosphite, e.g. Y 2 0 3 , (NH 4 ) 2 HP0 4  and 5b 2 0 3  are heated together. Phosphors activated by Sb and Tb are prepared by dissolving Y 2 0 3  and Tb 2 O 3  in water and HNO 3 , then adjusting the pH value with NH 4 OH to form a solution of (Y,Tb)(N0 3 ) 3 . A solution of (NH 4 ) 2 HPO 4  with the same pH value and temperature is added to precipitate. (Y,Tb)(N0 3 ) 3  which is washed, dried and fired with 5b 2 0 3  to produce the phosphor. The phosphors are used in L.P. discharge lamps and C.R.T.'s.
Patent GB-681263-A (GB)
Title: Improvements in or relating to the production of straight-chain microcrystalline hydrocarbon waxes and compositions containing the same
IPC: C08L91/08
Filed: 1949-09-23
Abstract: Microcrystalline hydrocarbon wax compositions comprise a preponderance of the straight-chain waxes and not more than 10 per cent by weight of other microcrystalline waxes.  The compositions are prepared by fractionating crude microcrystalline hydrocarbon waxes by contacting with urea, preferably at a temperature of 25100 DEG C, to form a crystalline complex between the urea and the straight-chain compounds present, at least one reactant being in the liquid phase. The crude waxes may be those found in waxy petroleum residues and in crude oil tank bottoms.  The crude waxes may be dissolved in a solvent such as a ketone, or ether, for example methyl isobutyl ketone, and the urea may be dissolved in an aqueous solvent which may contain an alcohol, such as an alcohol having 1-5 carbon atoms, for example, secondary butyl alcohol.  The complexes may be separated from the reaction mixture by filtering or centrifuging.  The complexes may be used as such as additions to wax compositions, but preferably the straight-chain compounds are regenerated by heating the complexes, preferably in the presence of water or a wax solvent. The wax compositions may be used as carnauba wax substitutes in wax polishes, pastes and emulsions; for example, they may be blended with 30-70 per cent mineral oil to form a wax polish.  Paste-type polishes may contain, for example, 20-40 per cent of the straight-chain waxes and a mixture of turpentine, kerosene and gasoline.  Emulsion-type floor waxes may contain 5-30 per cent of the straight-chain waxes, vegetable oil acids such as those of linseed oil and an emulsifying agent, such as a trihydroxyalkylamine, for example triethanolamine, clay, or soaps such as soaps of hydrocarbon-insoluble pine wood resins.  In one example, a composition containing carnauba wax, octadecylstearate and straight-chain microcrystalline wax is described. Specification 671,456 is referred to.ALSO:A minor amount, preferably 5-20 per cent, of straight-chain microcrystalline hydrocarbon waxes is included in asphaltic bitumen during air-blowing, the blowing time for a given penetration being thus reduced.  The preparation of these waxes, containing a preponderance of straight-chain microcrystalline waxes and not more than 10 per cent. of other microcrystalline waxes, is described (see Group III). The adhesion characteristics of asphalt compositions are also improved by addition of high molecular weight derivatives formed by oxidation of these waxes, with or without further conversion, for example, the fatty acids and corresponding alcohols, ketones, nitrides, amines and amides.  Specification 671,456, [Group III], is referred to.
Patent GB-409973-A (GB)
Title: Composite frame moulds for the preparation of confectionery, such as chocolate
IPC: A23G1/22
Filed: 1933-09-04
Abstract: 409,973. Moulds for confectionery. LE CERF, H., 29, Pantaleonsmuhlengasse, Cologne, Germany. Sept. 4, 1933, No. 24456. Convention date, April 27. [Class 87 (ii).] A mould for confectionery, such as chocolate, comprises a plurality of separate sharp-edged trough-like mould sections 5 suspended in apertures on a main flat, planed, polished and smooth plate 11 of substantial thickness, the mouth edges of the sections 5 being flush with the surface of the plate. The sections are secured to the plate by tin solder as at 8 and the plate may be soldered to and supported on a ledge on a frame 6. The Specification also describes known constructions. In one of these the sections are stamped from a plate and are soldered together and to a frame and strengthening ribs and the edges of the sections are rounded. In another, the sections, frame and ribs are assembled together and the spaces therebetween are filled with solder, the surface of the mould being finally milled or planed. In another, the edges of the sections are bent and beaded in to the edges of apertures in a supporting plate.
Patent GB-1525916-A (GB)
Title: Process and apparatus for purifying exhaust air
IPC: B01D53/04
Filed: 1977-06-13
Abstract: 1525916 Separating exhaust gas mixtures OTTO DURR GmbH and CO 13 June 1977 [14 June 1976] 24527/77 Heading B1L A process for purifying exhaust air containing combustible vapours and/or gaseous constituents comprises passing the exhaust air via a feed line 2 through at least one adsorber vessel 1 containing e.g. activated charcoal, until a predetermined quantity of the constituents have been adsorbed, obtaining by hyperstoichiometric combustion in combustion chamber 5 e.g. of oil from 13, a flue gas having a relatively small residual oxygen content, humidifying and cooling the flue gas by injecting water into it, e.g. by device 7, passing the flue gas via 6 through the filter in chamber 1 to effect desorbtion returning, the flue gas to combustion 5 in a closed circuit e.g. via 4 thermally purifying the returned flue gas in the combustion chamber, returning the flue gas to the filter to desorb it, constantly discharging a proportion of the flue gas to atmosphere via 26 to maintain a substantially constant mass balance, and when the filter is substantially completely desorbed, passing exhaust air to be cleaned therethrough.
Patent GB-300347-A (GB)
Title: Switch device for electrically heated apparatus and the like
IPC: H01R13/68
Filed: 1927-09-19
Abstract: 300,347. Meier, E. Sept. 19, 1927. Plug couplings combined with switches. - A switch for use with electric irons, vacuum cleaners &c. is mounted in one portion a of a plug and socket coupling, and comprises a plunger contact c adapted to be depressed into engagement with a fixed contact f against the action of a spring b by means of a lever q mounted for example on the iron p, the end of the lever q engaging the head d of the plunger c. The sockets g, k of the coupling fit over the pins n, o arranged on the iron, and the lever q is depressed by gripping the handle p of the iron. To enable the circuit to remain permanently closed when the handle is released a lever arranged e.g.; on the portion a is moved into a position over the lever q: As a safeguard against overheating the contact f consists of fusible metal which may flow into the adjacent free space and so break the circuit between the contact c and the spring e on which the contact f rests. Or alternatively the contact c or spring e may be made of fusible metal and a separate intermediate member f dispensed with.
Patent GB-615878-A (GB)
Title: Improvements in or relating to push-pull amplifiers for ultra-short waves
IPC: H03F1/08
Filed: 1946-08-19
Abstract: 615,878. Thermionic valves. PHILIPS LAMPS, Ltd. Aug. 19, 1946, No. 24613. Convention date, Nov. 12, 1942. Drawings to Specification. [Class 39 (i)] [Also in Group XL (c)] In a push-pull R.F. amplifier stage a capacitative impedance is connected between the cathodes of the amplifier valves in order to increase the input resistance of the stage. The valves may have a common envelope, and the capacitance, which may be a suitably dimensioned resonant line or cavity, may be mounted inside or outside this envelope.