baber/WOPTO huggingface dataset:
Patent GB-549983-A (GB)
Title: Improvements in jigs for plate welding
IPC: B23K37/047
Filed: 1939-05-30
Abstract: 549,983. Uniting plates by fusion. GUY MOTORS, Ltd., and BULLOCK, W. E. May 30, 1939, No. 15813. [Class 83 (iv)) A jig for welding plates, particularly the complete side of an armoured vehicle, comprises a rigid base, a number of adjustable members for supporting the plates in the relative planes in which their edges are to be welded together, and a number of co-operating clamps operated either by springs or simultaneously or individually by hydraulic or pneumatic power. A number of supports 2 may be welded to or adjustable on parallel steel joists 4 supported by joints 5. The plates are held on the supports by spring, hydraulic, or pneumatic clamps 10 which are mounted on arms 6 pivoted on supports 9 or 9a and carry universally mounted contact members 11. The clamping is effected away from the edges so as to prevent internal stresses due to welding. The arms may be held in operative position by pivoted shackles 14 engaging hooks 15 on the parts 2 and may be held in inoperative position by boss 24 engaging the supports 9a or by spring-pressed bolts 25. The plates may be adjusted on the supports 2 by eccentrics 23. Fluid pressure clamps may each be provided with a separate valve 10a and gauge, and all the clamps may be controlled by a master valve. After the external welds have been effected an auxiliary jig consisting of longitudinal channel members 19 welded to lateral plates 20 having attachment lugs 21 may be placed over the welded plates, and secured thereto, and then inverted and an internal weld made. An internal wash weld may alternatively be made during the external welding operation the underside of the joists being supported by backing strips of copper provided in recesses in the supports.
Patent GB-1500352-A (GB)
Title: Audio frequency transistor amplifier
IPC: H03F3/30
Filed: 1976-04-20
Abstract: 1500352 Transistor amplifiers TOKYO SHIBAURA ELECTRIC CO Ltd 20 April 1976 15879/76 Heading H3T An A.F. transistor amplifier for producing low harmonic distortion, comprises an output stage 40 for coupling to a load 60, a preceding stage 10, and a negative feedback circuit 70 coupled between the said stages, the circuit 70 including a D.C. blocking electrolytic capacitor Cl in parallel with a non- polarized capacitor C10. It is stated in the Specification that non-linearity may cause harmonic generation in an electrolytic capacitor, and that this effect may be reduced by shunting with one or more paper, metallized paper or plastics film capacitors. The amplifier may employ either bipolar or unipolar transistors.
Patent GB-930228-A (GB)
Title: Suction cleaner
IPC: A47L5/30
Filed: 1962-04-26
Abstract: 930,228. Suction cleaner. E. FABER, R. D. HAHN, H. HAHN, and E. WORWAG, [trading as MAUZ & PFEIFFER].. April 26, 1962 [April 29, 1961], No. 15881/62. Class 8(1). In a suction cleaner the belt drive for rotating a carpet beating and sweeping tool is enclosed in the space 3 lying alongside the main casing, which houses the motor 5, the dust collecting space and the rotating tool 10.
Patent GB-809597-A (GB)
Title: Improvements in or relating to uranium alloys
Inventor: PFEIL PETER CHARLES LESLIE
IPC: C22C43/00
Filed: 1955-06-03
Abstract: A ternary alloy contains 5-15 per cent molybdenum, 15-25 per cent niobium, and the balance uranium, the latter being enriched if desired with the isotope U235 or U233.  It may be made by melting the three components on a water-cooled copper hearth in an atmosphere of purified argon.  Its mechanical properties are improved by heating for 3 days or more at 1000 DEG C. to anneal it and allowing to cool. A nuclear fuel element may comprise a core of uranium in an envelope of the alloy or the core may be of the alloy but richer in uranium than the alloy of the envelope.
Patent GB-794896-A (GB)
Title: Improvements in or relating to electro-forming processes for semiconductor devices
Inventor: SIM ALAN COUDRAY
IPC: G01R31/26
Filed: 1955-06-03
Abstract: 794,896. Semi-conductor devices. STANDARD TELEPHONES & CABLES, Ltd. June 3, 1955, No. 15975/55. Class 37. A point contact semi-conductor device is electroformed by passing current through the contact, while the semi-conductor crystal is maintained at a temperature sufficiently high to ensure that its conductivity is intrinsic. In Fig. 1, the crystal 1 of N-type Ge or Si is placed in an oven 4 heated by element 5, and current pulses from a charged capacitor 9 are applied through point contact 3. Alternatively, the electroforming current may be applied from a constant voltage, or a constant current source. In the case of germanium, the temperature necessary to ensure that the conductivity is intrinsic (i.e. that the thermally generated carriers are sufficiently numerous to render insignificant the carriers due to lattice imperfections) lies between 150‹ and 300‹ C. The process facilitates control of electroforming by eliminating uncertainties due to variations in the electrical properties of the semi-conductor material. Specifications 747,198 and 794,895 are referred to.
Patent GB-1420914-A (GB)
Title: Process for the preparation of compounds which contain hydantoin  groups
IPC: C08G18/80
Filed: 1974-04-10
Abstract: 1420914 Hydantoin derivatives BAYER AG 10 April 1974 [11 April 1973] 16006/74 Heading C2C [Also in Division C3] Compounds which contain at least one hydantoin or thiohydantoin group are obtained by reacting compounds which contain at least one isocyanate or isothiocyanate group at 50‹ to 350‹ C. with compounds containing at least one α-halocarboxylic acid group or a derivative thereof. The isocyanates may be used partly or completely in the form of masked isocyanates which are obtained by reacting the free isocyanates with compounds containing reactive hydrogen. The reaction may be carried out in a solvent, e.g. an optionally substituted aliphatic or aromatic hydrocarbon solvent or a phenolic solvent. The compounds produced may be polyhydantoins containing the recurrent structural unit VII: or may be compounds of the Formula VIII, IX, X and XI: wherein R<SP>4</SP> is a hydrogen atom or an optionally substituted C 5-10  aromatic, C 1-20  aliphatic or C 5-10  cycloaliphatic radical or the two R<SP>4</SP>s together complete a C 5-7  cycloaliphatic ring, R<SP>3</SP> is an optionally substituted C 1-20  aliphatic or C 5-12  aromatic radical or a C 5-12  cycloaliphatic or C 6-20  aliphatic aromatic radical or an aromatic or cycloaliphatic heterocyclic radical containing 5 to 12 ring atoms which contains or is substituted by one or more heteroatoms, A is an aliphatic or aromatic radical and o is from 2 to 200.
Patent GB-304553-A (GB)
Title: Improvements in and connected with the packing of biscuits
IPC: B65D5/60
Filed: 1928-06-01
Abstract: 304,553. Ferguson, A. J. June 1, 1928. Right to Patent relinquished. Packing biscuits.- Biscuits are packed in a drawer B made of corrugated or fluted paper or provided with a lining C of such paper, and the drawer is inserted in an outer shell or carton A having end-closing flaps E which are sealed after insertion of the drawer a covering of grease-proof paper is then secured around same and the package is finally covered around same and the package in finally covered with waxed paper. By these means the biscuits are kept air and water-tight and after being first opened the inner drawer can be returned to the shell and retained therein by reclosing the flaps of the outer shell. The drawer is provided with a finger opening D by which it may be withdrawn from the shell to obtain access to the biscuits.
Patent GB-439122-A (GB)
Title: Improvements in or relating to food for poultry
IPC: A23K1/16
Filed: 1934-05-29
Abstract: A food for poultry comprises an emulsion of a solution of an oil-soluble red dyestuff and a solution of one or more salts beneficial to or giving nutriment to the poultry.  The dyestuff may be amidoazobenzene - azo - b  - naphthol, which may be dissolved in fish oil, and the salts may be calcium hypophosphite, sodium benzoate, calcium phosphate or calcium chloride.ALSO:A food for poultry comprises an emulsion of a solution of an oil-soluble red dyestuff and a solution of one or more salts beneficial to or giving nutriment to the poultry.  The dyestuff may be amidoazobenzene - azo - b - naphthol, which may be dissolved in fish oil, and the salts may be calcium hypophosphite, sodium benzoate, calcium phosphate, or calcium chloride.  The food is stated to produce a deep yellow to reddish yellow colouration of the egg yolk without influencing the colour of the albumen.
Patent GB-839677-A (GB)
Title: Method and apparatus for producing coated glass
IPC: C03C17/02
Filed: 1958-05-20
Abstract: Glass sheets, e.g. spandrel units, are coated by conveying a plurality of flat glass sheets horizontally with their undersurfaces in direct contact with conveying elements while sequentially applying, e.g. by spraying, a liquid dispersion of a finely-divided coating material to the upper surfaces thereof, gradually heating the coated sheets to an elevated temperature sufficient to anneal the glass sheets throughout their thickness, to volatilize the liquid and fuse the coating to the surface, but insufficient to cause the sheets to soften, for a comparatively brief interval and cooling the sheets rapidly to impart a temper thereto.  Any coating material which inadventently contacts the bottom surface of the glass sheets may be removed before exposing the coated sheets to the elevated temperature.  The liquid dispersion may be of a finely-divided ceramic enamel which may also contain a finely-divided metal powder, e.g. aluminium. Alternatively, a liquid dispersion of metallic powder may be applied to glass sheets covered with a liquid dispersion of enamel which may be <PICT:0839677/III/1> <PICT:0839677/III/2> <PICT:0839677/III/3> <PICT:0839677/III/4> <PICT:0839677/III/5> <PICT:0839677/III/6> a clear composition.  The coating composition may be a suspension in water or alcohol, e.g. methyl, butyl, n-propyl carbinol, glycerol and glycol, and may contain sodium nitrite, sodium pyrophosphate, silicones, octyl alcohol, citric acid and methyl cellulose.  Aluminizing compositions specified contain oxides of lead, silicon, boron, zirconium, sodium and cadmium, and colouring pigments, e.g. cadmium sulphide and sulphoselenide, chromium oxide, titanium oxide, ferric oxide, and cobalt oxide.  In the apparatus described, glass sheets are conveyed by rolls 92 and urged into washer section 14 by last roll 94 and pinch roll 96.  The sheets, conveyed on rolls 103 which co-operate with wringer rolls 104, are washed by brushes 106 supplied with detergent from apertured pipes 105, the sheets then being washed with, for example, water, from spray nozzles 109 prior to further washing by brushes 112.  The sheets are dried by dry air blown in through nozzles 115 prior to passage on cable conveyer 16 into spray booths 20, 22, where the sheets are coated by spray guns. Any coating material inadvertently applied to the under-surface of the sheets is removed by brushes 180 prior to the entry of the sheets into furnace 28.  Heat-resistant conveyer rolls 46 carry the sheets through the furnace which contains heaters 204, 206 controlled by elements 208, 210.  The temperature is increased rapidly in zone 30 of last furnace section 29 by additional heaters 212.  The sheets are then cooled in section 32 by air from nozzles 254, the first of which may be extended to extremity 256. Castor tables for placement of displacement of the sheets at various points in the process without interruption of the process are described.
Patent GB-831969-A (GB)
Title: Improvements in or relating to the preparation of chemically reactive allyl-cellulose
IPC: C08B11/193
Filed: 1956-05-25
Abstract: Allyl cellulose is prepared by treating cellulose with a solution of alkali metal hydroxide of 10-30% by weight strength, at a temperature below 40 DEG  C., and treating the resulting alkalicellulose with a solution of allyl halide in an inert solvent, at a temperature below 40 DEG  C., in an inert atmosphere, e.g. nitrogen or argon.  The reaction is preferably carried out with exclusion of light. Specified allyl halides are the chloride and bromide, and a solution containing both may be used. Specified inert solvents are carbon tetrachloride, tetrachlorethane and methylene dichloride.  The allyl cellulose thus produced retains the fibrous structure of the cellulose and may be esterified, e.g. acetylated, or further etherified to yield an organic solvent-soluble mixed cellulose ether, e.g. benzyl allyl cellulose.
Patent GB-1209576-A (GB)
Title: Improved method of producing calcium silicate type insulation materials
IPC: C04B28/18
Filed: 1969-03-28
Abstract: 1,209,576. Cementitious-fibrous compositions. OWENS-CORNING FIBERGLAS CORP. 28 March, 1969 [18 April, 1968], No. 16333/69. Heading C1H. High temperature insulation is prepared by casting an aqueous slurry of fibres, siliceous and calcareous materials and free lime into a steel mould and heating at 160-212 F. at atmospheric pressure to form an undisrupted tobermorite gel network bridging the fibres and then autoclaving, at or above 200 p.s.i. at or above 500 F., the quiescent materials to convert the tobermorite gel to a crystalline tobermorite or xonotolite structure bridging the fibres. The fibres used are either asbestos fibres or glass fibres coated with phenolformaldehyde, polyvinyl chloride or butyl, acrylonitrile or neoprene elastomers. The slurries contain wollastonite, or a mixture of wollastonite and Portland cement, as the calcium silicate and contain, by weight of solids, 3-35% lime, 18-40% silica and 10-25% fibres.
Patent GB-1391074-A (GB)
Title: Process of producing sintered magnesia
IPC: C01F5/08
Filed: 1972-04-10
Abstract: 1391074 Sintered magnesia OSTERREICHISCH-AMERIKANISOHE MAGNESIT AG 10 April 1972 [21 April 1971] 16430/72 Heading C1A A process for producing caustic magnesia from magnesium hydroxide slurry comprises drying the slurry, preferably to a moisture content of 5 to 8%, such that the slurry can be briquetted to form briquettes which are first heated to a temperature above the dissociation temperature of magnesium hydroxide to form caustic magnesia. The thus formed magnesia briquettes are recompressed and finally sintered. Preferably, the briquettes are first heated to 700 to 900 C. and the process carried out in a multiple bed furnace, where the dried slurry is removed from the appropriate bed and after briquetting fed to the subsequent bed for conversion to caustic magnesia.
Patent GB-148680-A (GB)
Title: Improvements in air heating apparatus
IPC: F24H3/00
Filed: 1919-06-30
Abstract: 148,680. Watson, W., and Duncan, R. June 30, 1919. Air-heating and ventilating stoves.-Relates to apparatus for heating air in the ventilation of buildings or vehicles or for similar purposes of the type comprising a spiral air-conducting pipe 4 located between inner and outer concentric shells 3, 1, within the inner of which the heating device is located. According to the invention, the pipe 4, which is preferably of rectangular cross-section, is arranged in contact with the inner shell 3, but is insulated from the outer shell 1 by means of asbestos or like non-conducting packing 5. The shells are provided with end covers having central doors or plugs 6 which may support the heating element 8, the latter consisting either of an electrically-heated metal strip or of a number of lamps.
Patent GB-333957-A (GB)
Title: Improvements in and relating to the manufacture of porous insulating bodies
IPC: C04B30/02
Filed: 1929-05-28
Abstract: 333,957. Bohlander, H. May 28, 1929. Nonconducting coverings for heat and sound. -A felt-like material for insulating against heat or sound is composed of two different kinds of inorganic fibre, one of which is selected for its insulating properties while the other is chosen for its strength. Preferably, the fibres are made to lie parallel with one another during the preparation of the mixture, and they may be damped or treated with a binding material to cause them to set firmly together. Slag wool, for example, can be mixed with a stronger fibre such as asbestos, and the mixture can be immersed in an aqueous solution of starch or waterglass. Powdered materials, such as kieselguhr or magnesia, can be added to the mixture, and a quick-drying binding material can be added before or during preparation. The resulting mass can be brought to the required degree of density or porosity by pressure. The fibrous materials can also be felted together by submitting the mixture to a current of steam or moist air with which the binder can be mixed by spraying. Alternatively the binder may be mixed with the fibres before they are treated with steam.
Patent GB-497049-A (GB)
Title: Improvements in stereoscopic photography
IPC: G03B35/24
Filed: 1937-06-14
Abstract: 497,049. Stereoscopic photography. KANOLT, C. W. June 14, 1937, No. 16460. Convention date, June 15, 1936. [Class 98 (ii)] Means for moving a camera about a fixed point for taking stereoscopic views comprises a camera support pivoted to a pair of spaced elements guided along separate paths in a base, at least one of the paths being fixed with respect to the base and the elements being moved along their paths at relatively different speeds. As shown in Figs. 1, 3, the camera 19 is carried on a plate 20 which is pivoted at 21 to a block 17 sliding in a groove 16 in a base 15, and which has a slot 22 engaged by a slider 23 on a block 18 guided in a second groove 16. The blocks are engaged by lead screws 24, 25 driven by a motor 26 through gearing 29, 30 so that the screw 25 rotates faster than the screw 24, the camera thus rotating about a fixed point 32 on which it is focused. The speed of movement may be varied, and the point 32 may be moved by changing the ratio of the speeds. A flexible shaft 35, driven from the gear train, moves the plates of the camera with respect to a lineated screen. In a modification, the plate 20 may be pivoted directly to the block 18 and the screw 25 driven through a flexible coupling, the guide 16 being dispensed with. In a further modification shown in Fig. 5, a lever 40, pivoted to a post 42, is connected by links 38, 39 to the blocks 17, 18, the block 18 being moved by a screw 25 driven through suitable gearing, and the links sliding on rollers 41. Alternatively, the links may be pivoted to the plate 20. In all modifications, castors may be provided to facilitate transport. Specifications 117,342, [Class 98 (ii)], 370,702, 375,496, and 437,519 are referred to.
Patent GB-1211452-A (GB)
Title: Improvements in or relating to gear selectors for motor vehicles
Inventor: HARPER STEPHEN JAMES
IPC: F16H59/10
Filed: 1968-04-05
Abstract: 1,211,452. Change-speed control. ROOTES MOTORS Ltd. 20 May, 1969 [5 April, 1968], No. 16491/68. Heading F2D. The various gear selecting positions (PRND21) of a motor vehicle gear selector lever 16 pivotally mounted in a fixed plane in a slot 15 of a base member 17 closed by a slide 19 movable along grooves 21 in the base 17 by the lever 16 which engages through an opening 18 in the slide 19, are shown by a co-operating gearindicating scale 25 and pointers 23 respectively formed on the base 17 and slide 19. The base 17 may be part of the vehicles' floor, tunnel or gear-box casing, the indication scale 25 having two adjacent windows 24 through which the slide pointers 23 can be observed, the scale symbols 25 and pointers 23 being treated with luminous paint. As shown, the lever 16 directly engages the slide 19 through the clearance opening 18 which allows for the pivotal movement of the lever. Figs. 4 and 5 (not shown) illustrate alternative connections between the lever and slide to eliminate the lost-motion of the above arrangement resulting from the clearance opening 18, the arrangement of Fig. 4 having a sleeve (26), sliding on the lever, with transverse trunnions (27) engaging the slide, whilst in Fig. 5, lateral cross-pins (29), on the lever, engage elongated slots in brackets on the slide. For ease of reading, the indication scale may be inclined relative the base member, the slide being of thin flexible strip to readily deflect during movement thereof.
Patent GB-1003779-A (GB)
Title: Improvements relating to variable-speed belt gearing
Inventor: BOOTH ALFRED
IPC: F16H9/16
Filed: 1963-04-26
Abstract: 1,003,779. Expanding-wheel gear. STONE-WALLWORK Ltd. April 24, 1964 [April 26, 1963], No. 16572/63. Heading F2D. In a countershaft expanding pulley belt gear wherein coaxial driving and driven expanding pulleys 7, 8 are connected by belts 13, 14 to expanding pulleys 15, 16 keyed to a hollow countershaft 18, ratio shift is effected by axial movement of the countershaft 18 which is freely rotatable and axially slidable on a shaft 21, and acts through stops 26 to cause axial movement of the movable flanges 15a, 16a of the pulleys 15, 16 relative to the fixed flanges 15b, 16b. Hubs 15c, 16c of the fixed flanges 15b, 16b have opposite hand threads which engage a nut 27 held against axial movement by a bearing 28 the outer race of which is fast with the casing. Belt tension may be adjusted by turning the nut 27 relative to the flanges 15b, 16b. Axial movement of the countershaft 18 is effected by turning a handwheel 36 fast with an externally threaded element 25 which cooperates with a threaded bush 37 in the casing and is connected for axial movement with the countershaft 18 by a bearing 22. The movable flanges 7b, 8b of the driving and driven pulleys 7, 8 are interconnected for axial movement by a bearing 12. Lubrication may be effected through the ducts shown on the shafts carrying the axially movable flanges may be coated with nylon or molybdenum disulphide. Specification 1,001,803 is referred to.
Patent GB-1102545-A (GB)
Title: Improved toy space ship
IPC: A63H30/02
Filed: 1965-04-20
Abstract: 1,102,545. Captive aircraft R. A. WOLFE. 20 April, 1965 [17 April, 1964], No. 16594/65. Heading A6S. A toy space ship comprises a captive balloon having means to remotely control the directional movement of said balloon. The balloon A is provided with an elevating reversible motor beneath the balloon and reversible motors mounted each side thereof, driven through a five-way cable C by batteries in a control unit D. A 3-position switch 44 is movable to one or other extreme positions to drive the underneath motor in one or other direction (up or down), while a 5-position switch 116 (see Specification 1,102,546), is used to control directional and rotational movement of the balloon. In forward position of this switch, both side motors are driven forwardly, while in rearward position both motors are reversed. When switch 116 is moved to the right, the leftside motor drives forwardly and the rightside motor rearwardly to produce righthand turning, while moving the switch 116 to the left reverses the directions of the motors and produces lefthand turning.