baber/WOPTO huggingface dataset:
Patent GB-921419-A (GB)
Title: Process for the production of terephthalic acid
IPC: C07C51/275
Filed: 1959-04-02
Abstract: A process for the production of terephthalic acid comprises oxidising at elevated temperature 1,3,5-tri(p-tolyl)-benzene with chromic acid in glacial acetic acid solution or sulphuric acid solution or with dilute nitric acid.  Temperatures above 180 DEG C. and elevated pressure are preferably employed when nitric acid is employed as oxidizing agent.  Examples are furnished.  By-products mentioned include p-toluic acid and 1,3,5-triparacarboxyphenyl benzene. 1,3,5-Tri-p-tolyl benzene is obtained by passing paramethyl acetophenone over aluminium oxide at 200 DEG C.
Patent GB-1490891-A (GB)
Title: Antenna with a reflector arrangement
IPC: H01Q19/18
Filed: 1975-03-18
Abstract: 1490891 Aerials THOMSON-CSF 18 March 1975 [19 March 1974] 11293/75 Heading H4A An antenna comprises, in order, an electromagnetic radiator or receiver 3, a reflector arrangement having at least one reflector 41- 44, the or each reflector being plane, an auxiliary reflector 2 having two foci and a main reflector 1 physically located between the auxiliary reflector and the reflector arrangement, the two foci being on opposite sides of the main reflector, the radiator or receiver 3 being at the effective focus F remote from the auxiliary reflector. As described, one reflector 44 is integral with the curved reflectors 1 and 2. The antenna may be rotated azimuthally about axis ZZ or in elevation by rotating the integral assembly 1, 22, 44 about the axis YY. The antenna may also be fixed. In a two-phase reflector embodiment (Fig. 3, not shown) the azimuthal rotation axis (Z 1 Z 1 ) is offset from the main reflector axis (ZZ). The curved reflectors 1, 2 may be slightly deformed from true conies and the plane reflectors 41-44 may be of metal or laminated material coated with Zn or other metals and are mounted on adjustable supports. Adjustment may be visual using small optical mirrors (not shown) attached to the centre of each plane reflector. The horn 3 may be corrugated.
Patent GB-108365-A (GB)
Title: Improvements relating to Hot Water Bags, Fomentations and the like.
Inventor: MACCALLUM MATILDA
IPC: A61F7/00
Filed: 1916-08-10
Abstract: 108,365. MacCallum, M., and Mac- Kellar, A. B. Aug. 10, 1916. Heating and cooling appliances.-A hot or cold water receptacle 1 of rubber &c. is provided on all sides but one with a fixed covering 3 of asbestos cloth or other heat-insulating material. Spongy or absorbent material 4 is applied to the remaining face and serves to apply a fomenting liquid to the body. Perforated tubes 6 open at one or both ends are attached to the non-insulated face of the receptacle. The appliance may be shaped to any particular part of the trunk of the body on the limbs and is provided with straps for securing it in position. According to the Provisional Specification, the insulating-cover may be detachable and the appliance may ba adapted for veterinary use.
Patent GB-1323781-A (GB)
Title: Electronic typewriter
IPC: B41J2/27
Filed: 1971-04-26
Abstract: 1323781 Selective printing SOC DE REPRESENTACOES SANTOS GUIMARAES & OLIVEIRA SARL 26 April 1971 [14 May 1970] 11349/71 Heading B6F The wires of a matrix printer are selectively withdrawn by electromagnets 11<SP>1</SP>, so that the wires remaining constitute the selected character. A variable impression, electromagnetically operated hammer 4<SP>1</SP> impacts on ink ribbon 10<SP>1</SP> against the paper 1<SP>1</SP> positioned above the wires ends. A series of lights 151 with horizontal filaments cast the shadow 17<SP>1</SP> of a wire 16<SP>1</SP> on to the paper, so that the paper can be correctly aligned. A lamp 18<SP>1</SP> illuminates the printing area.
Patent GB-112108-A (GB)
Title: Improvements in or relating to Automatic Signalling Lanterns for Level Crossing Barriers.
Inventor: YSEBOODT FRANCOIS MARIE GUSTAV
IPC: B61L29/02
Filed: 1917-08-07
Abstract: 112,108. Yseboodt, F. M. G. Aug. 7, 1917. Lamp signals; crossing - gate signals. - A lamp and two screens are suspended on pivots attached to a pivoted barrier for a level crossing and the pivots are so placed as to occupy positions at different relative heights from the ground when the barrier is open and closed. The lantern 30 is suspended from the middle pivot 2, and screens 8, 9 from the pivots 1, 3. In the position shown, the red faces 14, 15 of the lantern are visible to an approaching train through the aperture 18 and below the screen 8 respectively. White lights are exposed to the road traffic. When the barrier is lowered, the screens 8, 9 shut off the red lights to the railway track and a red glass 11 is shown to the road traffic, this glass being carried on the lower portion of the screen 9.
Patent GB-1368516-A (GB)
Title: Microwave semiconductor devices
IPC: H01L23/42
Filed: 1972-03-10
Abstract: 1368516 Semi-conductor devices RAYTHEON CO 10 March 1972 [13 April 1971] 11393/72 Heading H1K A microwave semi-conductor device comprises a thermally conductive slab 10 of, e.g. gold supporting a semi-conductor body 11 of, e.g. GaS, Si or InP with an interposed layer 12 of, e.g. Pt forming a Schottky barrier with the S/C body. The region of body 11 adjacent layer 12 and heat sink 10 is doped to N- of high resistivity and the remaining region is doped N+. On the latter is a layer 13 of; e.g. Pt forming a low resistance junction superimposed with a layer 14 of, e.g. Au; the Pt layers 12, 13 preventing in diffusion of Au. Body 11 comprises, e.g. two series of 4 elongated regions orthogonally intersecting with radiused intersections to cover only a small part of surface of slab 10, and heat generated in the S/C body flows in directions parallel to the slab, which is mounted on metal base 17 sealed to a glass or ceramic envelope carrying a metal tube 19 enclosing a sealed-in power conductor 15. In preparation a wafer -of GaAs is sliced from a S doped N+ crystal and a layer of Te doped N-GaAs is epitaxially grown thereon of sufficient thickness for j unction back bias to produce junction avalanching without the depletion extending into the N+ layer. Pt is thermally deposited in vacuo, on which layer 12 a heat sink 10 is electron plated from a gold solution. The opposite side of the wafer is lapped or etched with H 2 SO 4  + H 2 O 2  + H 2 O and the exposed N + surface is similarly coated with Pt, on which layer 13 a gold layer 14 is vacuum deposited. The layer 14 is photoresist masked and the body is etched to the required structure after which wire 15 is attached. Plural individual structures may be prepared simultaneously in one wafer which is then diced. In operation (Fig. 4), the device 22 is positioned in waveguide 21 with its base contacting the lower wall and its lead-in member 19 connected through a microwave choke in end plate 26 to a D.C. power source 26, e.g. of adjustable constant or pulsed current type. A microwave, e.g. iris coupler 27 connects the guide to lead 28, e.g. an antenna or a microwave heating cavity, and the spacing of device 22 in the guide is determined by the relative source and lead impedances.  Alternatively (Fig. 5, not shown) an amplifier comprises a three-part circulator coupled to a signal input, a load output and a semi-conductor device as described, which is energized to a level just below that of oscillation for zero input signal. Mismatch reflections are absorbed by the signal input. Gunn amplifiers or oscillators may be mounted on the same heat sink.
Patent GB-215780-A (GB)
Title: Improvements in sheet feeding mechanisms
IPC: B65H5/06
Filed: 1924-05-09
Abstract: 215,780. Smithe Machine Co., Inc., F. L., (Assignees of Novick, A.). May 9, 1923, [Convention date]. Sheet-separators; sheet-carriers.- Sheets are fed from a pile A to envelope-making or other machines by means of a pneumatic picker C which is moved into engagement with the bottom sheet of the pile and then lowered to separate the bottom sheet, which is fed into the bite of feed-rollers 20, 21 by a deflector D. The deflector D is reciprocated in a horizontal plane slightly lower than the plane of the bottom sheet in the pile, and guides the end of the sheet into a recess 22 in the roller 21, as shown in Fig. 6, after the picker C has commenced its return movement to the pile. The pile A is supporrted on a pivoted table 1 the inclination of which is adjustable by set-screws resting on fixed ledges, and the table is fitted with adjustable vertical rods engaging re-entrant angles of the blanks. The picker C is in the form of a suction nozzle 28 on a tube 29 carried by a block 31 clamped to a rod 32 mounted on bell-cranks 41 on pivots 40 carried by levers 36 pivoted about pivots 35. The levers 35 are cscillated by cams 38 to give the nozzle a vertically reciprocating movement, and as the nozzle returns towards the pile it is tilted, as shown in Fig. 5, by earns 46<a> acting on levers 43 connected by adjustable link-connection to the bell-cranks 41. The roller is recessed at 47 to permit of this tilting motion. The deflector D is formed as a bifurcated member through which the nozzle can pass, and it is pivoted to a bell-crank 51 oscillated by a cam 56. The deflector is guided to move in a substantially horizontal plane by rollers 61, 62 engaging its tail end 50<a>. The front end of the pile is supported by an adjustable rod which prevents more than one sheet from being separated by the nozzle 28.
Patent GB-214832-A (GB)
Title: Improvements in whistles
IPC: G10D7/02
Filed: 1923-04-30
Abstract: 214,832. Grierson, A. R. April 30, 1923. Musical whistles. - In a whistle blown from the nostrils and comprising a D-shaped wind chamber 1 which receives air through an aperture 3, and an amplifying chamber 2 into which the air passes through a narrow passage 8, the back plate 4 is provided with a tongue 9 engaging the upper lip, and with shaped portions 12, 15 engaging the lower lip and chin, the bend 12 forming a pit or recess in which the air rushing from the passage 8 is set into rapid vibration. The whole instrument may be formed of three sheet-metal stampings, one constituting the front of the wind chamber 1, the back plate 4 and the bent nortions 12, 15, the other two being identical and each comprising a side plate 16 and a slightly-curved nostril plate 6 which directs the air to the aperture 3.
Patent GB-352549-A (GB)
Title: Improvements in or relating to the manufacture of natural rubber and artificial rubber like masses
IPC: C08K5/3412
Filed: 1930-04-12
Abstract: Anti-agers for rubber comprise the condensation products obtained by condensing a -naphthylamines or substitution products thereof with aliphatic aldehydes in the presence of water soluble alcohols and acids, and subsequently treating the primarily formed resin-like products with water.  The process for the preparation of these compounds is described in Specification 333,941, [Class 2 (iii), Dyes &c.].  The products may be incorporated in the vulcanization mix or may be dissolved in a suitable solvent and the unvulcanized rubber mixtures painted with the solution.
Patent GB-484533-A (GB)
Title: Improvements in or relating to boxes and like containers
IPC: B65D85/34
Filed: 1937-04-23
Abstract: 484,533. Boxes. FIDDES, J. April 23, 1937, No. 11723. [Class 18] Some or all of a number of thin boards constituting the bottom 11, sides 12, and, at least, part of the top 13 of a box are joined by flexible bands 14 of metal, two of which bands lie, preferably, along the transverse edges of the boards. The boards 11 ... 13 are made up as a flat and folded around and nailed or stapled to rigid end members, the ends of the bands 14 being turned under the top portions 13. The bands 14 may be ribbed longitudinally and they are secured to the boards 11 ... 13 by one or more rows of staples turned over on the inner faces of the boards. A lid comprises boards 19 joined by cleats 20, and it is secured in position by inserting the projecting ends 21 of the cleats under one member 13 and nailing metal plates 22 on the other end of the lid to the opposite member 13. In an alternative construction, the lid is part of the flat and the bands 14 serve as hinges and fastening means therefor. The members 13 may comprise two superposed boards with the ends of the bands 14 led over the top board and nailed between the two.
Patent GB-610865-A (GB)
Title: Improvements in frequency-modulated transmitters
IPC: H03C3/00
Filed: 1946-04-17
Abstract: 610,865. Frequency modulation. PHILIPS LAMPS, Ltd. April 17, 1946, No. 11781. Convention date, Nov. 26, 1941. Drawings to Specification. [Class 40 (v)] In a frequency-modulated transmitter having a variable centre frequency obtained by beating the output of an oscillator with fixed tuning with the output of a tunable oscillator, one of the oscillators being frequency modulated, the desired beat frequency is selected by a bandpass filter having tuning means ganged with the tuning control of the variable oscillator.
Patent GB-1370641-A (GB)
Title: Complex aluminium phosphates
IPC: C01B25/455
Filed: 1971-04-28
Abstract: 1370641 Complex aluminium phosphates IMPERIAL CHEMICAL INDUSTRIES Ltd 11 April 1972 [28 April 1971] 11880/71 Heading C1A A water-soluble solid halogen-containing complex phosphate of aluminium containing chemically bound water is produced by contacting an aluminium orthophosphate hydrate containing at least 2À5 molecules of water per unit of aluminium phosphate with HCl, HBr or MI. The hydrogen halide may be gaseous and may be mixed with a diluent. The preferred hydrates have a formula AlPO4.xH2O where x is in the range 2À7 to 3À3. The preferred conditions for the reaction are a temperature of 0 to 50 C., a pressure equal to ambient for HCl and above ambient for HBr and HI. The process may be carried out in a fluidized bed. Specified products are AlPO4.HCl.xH2O where x is 2À9 or 3.
Patent GB-1130996-A (GB)
Title: A method of manufacturing stretchable knitted goods
IPC: D01D5/32
Filed: 1967-03-14
Abstract: 1,130,996. Yarns of mixed composite and non- composite filaments. KANEGAFUCHI BOSEKI K.K., and SNIA VISCOSA SOCIETA NAZIONALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. 14 March, 1967 [19 Mareh, 1966], No. 11906/67. Heading B5B. [Also in Division D1] A substantially untwisted group of bicomponent filaments having latent crimpability are combined with a substantially untwisted group of one-component filaments in a ratio by weight between 4: 6 and 9:1. The one component filaments may comprise filaments of two or more materials. Spinnerets described comprise an annular spinning chamber surrounding a central spinning chamber with spinning orifices arranged at the junction of the two chambers and through which the bi-component filaments are spun and optionally further orifices in the central chamber or in both chambers through which the one-component filaments are spun. Polymers used may be polyamides, polyesters, polyolefines, polyacrylonitriles or polyvinyls. In specific examples the bi-component filaments were composed of nylon 6 and a copolymer of nylon 6 and polyhexamethylene isophthalamide, and the onecomponent filaments of nylon 6 or of nylon 6 and the copolymer.
Patent GB-388599-A (GB)
Title: Improvements in or relating to multiple delivery lubricating pumps
IPC: F16N13/14
Filed: 1932-04-26
Abstract: 388,599. Lubricating-pumps. BOSCH AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. April 26, 1932, No. 11931. Convention date, May 12, 1931. [Class 102 (i).] In a multiple-delivery lubricating-pump a number of plungers 6 arranged in a circle draw from a common suction chamber 12, supplied by a pipe 13, and discharge to pipes 15 controlled by piston valves 14. The valves 14 are pressed inwards by a spring 16, acting on a washer 17, and enclosed by a cover 18, which serves to collect leakage. The plungers are operated by a head 4 sliding on a central column 5 and reciprocated by a spindle 2 which is turned by a handle 8 and is formed with a groove 9 engaging a pin 10. The feed strokes of the plungers are adjusted by screws 7. The suction stroke is effected by a spring F, the plungers being formed with collars engaging recesses in a flange on the head 4.
Patent GB-1354668-A (GB)
Title: Process for sulphiding nickel-containing materials
IPC: C22B23/00
Filed: 1973-03-13
Abstract: 1354668 Sulphiding nickel containing materials INTERNATIONAL NICKEL CO OF CANADA Ltd 13 March 1973 [17 April 1972] 11952/73 Heading C1A The obtaining of nickel and cobalt values from nickeliferous oxide materials such as limonitic lateritic ores is effected by treatment in an aqueous slurry with 2 to 4% of sulphiding sulphur (e.g. elemental sulphur, hydrogen sulphide, sodium sulphide, ammonium sulphide, ferrous sulphide or sodium hydrosulphide) and at least 10 g. of chloride ions per litre of the aqueous phase of the slurry. Sea water may be used as the source of chloride ions. The sulphiding process is performed under superatmospheric pressure, including a partial pressure of hydrogen of at least 8 atmospheres and a temperature in the range 200‹ to 240‹ C. The nickel and cobalt values are recovered either by oxidative leaching or by aeration in the presence of ammonia. The latter technique reduces dissolution of iron values which may be present.
Patent GB-850549-A (GB)
Title: Improvements in and relating to snap action electric switches
IPC: H01H13/36
Filed: 1958-04-15
Abstract: 850,549. Snap-action switches; thermal switches. MACLAREN & CO. Ltd., R., RICHMOND, T. G., ADAM, I. R., and KING, D. M. March 26, 1959 [April 15, 1958], No. 11955/58. Class 38 (5). A snap-action switch employs a plate 10 held out of a true plane by a plate 12 so that it will snap through its flat position and is acted upon or adjusted by (if the plate 10 is a bi-metal) pressure on two points (by screws 18) one on each side of the part secured at 15 at a place remote from the moving contact 13. The construction shown uses a bimetallic plate and screw 19 is the temperature setting control. In a modification (not shown) screw 19 acts through a first order lever to adjust a tension spring which applies force to the plate to make it impossible to over stress it. In a further modification (not shown) an external rod is provided to take the switch operating force and the plate is not bimetallic. Some form of heat sensitive device for example a rod and tube assembly is used to contact the switch.
Patent GB-1249671-A (GB)
Title: An improvement in or relating to tools for use with hot water radiators
Inventor: JACKSON JOHN
IPC: B25B13/48
Filed: 1968-02-14
Abstract: 1,249,671. Hand tools. J. JACKSON, and W. J. McLESTER. 13 Jan., 1969 [14 Feb., 1968; 12 March, 1968], Nos. 7339/68 and 11960/68. Heading B3N. A tool for inserting plugs and adapters in hot water radiators has an end 12 of square crosssection, a cylindrical end 14 having slots 16 and a bar 24 for turning the tool by. A portion 18 is of larger diameter than portion 14 in order to fit a larger adapter. Cross-pieces 26 and 28 have different size hexagonal cross-sections to fit similarly shaped adapters.
Patent GB-541355-A (GB)
Title: Production of coloured photographic images
IPC: G03C7/26
Filed: 1941-02-21
Abstract: 541,355. Colour photography. TULL, A. G. Feb. 21, 1941, No. 11974. Divided out of 540,971. [Class 98 (ii)] Differently coloured non-reversed photographic images are produced in the different strata of a photographic emulsion layer or in different layers of a photographic multilayer material by developing latent images formed in the layer or layers and, without fixing, converting the developed images into silver salt images capable of being toned with metal salt solutions to form chemically toned images and toning in a bath containing a plurality of different toning reagents each capable of forming a different chemically toned image from the silver salt image whereby different toned images are deposited in successive strata or layers, silver and silver salts being finally removed from the layer or layers. In an example, an orthochromatic emulsion sensitized to red for part of its depth and containing a red or other dye to prevent blue and green light from reaching the red-sensitized stratum when the element is exposed through the support is exposed and developed, and the images produced are, without fixing, bleached to silver ferrocyanide in a bath containing potassium ferricyanide, ammonia, and water. After washing the material is treated in a toning bath containing ferric nitrate, uranium nitrate, nitric acid, and potassium bromide to give an upper blue image and a lower red image. The use of a separate bleach bath may be avoided by adding potassium ferricyanide to the toning bath. Silver salts are removed with Farmer's Reducer, acid hypo, or a bath containing potassium ferricyanide, hypo, sodium acetate, and acetic acid. The process may be applied to material with at least two differently colour-sensitized emulsion layers. Three or more layers or strata may be toned in a single solution, e.g. a solution containing a ferric salt, a uranium salt, and a lead salt gives a top blue image, a midde red image, and a bottom yellow image.
Patent GB-488608-A (GB)
Title: Improvements in or relating to method of keeping the picking fingers of hop picking machines clean
IPC: A01D46/02
Filed: 1938-04-21
Abstract: To remove oil, sap, and gummy substances from the picking fingers of hop-picking machines a number of cords of coarse fibrous material such as coir are passed through the machine in unison with the hop bines.  The cord may be attached to and intertwined with the bines. The cords may be used in the field when the bine supporting trellises are strung so that as the plants grow they will become intertwined with the cords.
Patent GB-155172-A (GB)
Title: Improvements in water closets for use on railway and other vehicles, ships and the like
IPC: B61D35/00
Filed: 1920-04-30
Abstract: 155,172. Corry, J. A. April 30, 1920. Railway-carriage and ship closets.-In order to prevent discharge of excreta from the vehicle or ship and yet allow the closet to be used in stations and docks, the closet is provided with' a reservoir 14 situated below a false floor 12. The reservoir is normally cut off from the hopper 21 by a hinged sealing-pan 38, and may be closed at the bottom by a sliding valve 28 operated by a handle 31. When it is necessary to prevent the exit of excreta through the waste pipe 34, the valve 28 is closed and the handle 31 locked in position. A flush pipe 25 is provided for the reservoir. A steam chamber 36 surrounds the top of the pipe 34 to prevent freezing in winter.
Patent GB-374577-A (GB)
Title: Improvements relating to the pasteurisation of liquids in bulk
IPC: C12H1/18
Filed: 1931-04-23
Abstract: 374,577. Pasteurizing milk &c. HYDE, G. W., 1, Grey Street, Ardwick, Manchester. April 23, 1931, No. 12014. [Class 49.] Liquids such as milk, cider, wine, vinegar or food extracts are pasteurized by passage through a coil consisting of a section c of relatively small bore, e.g. # inch, in which the liquid is raised to pasteurization temperature followed by a section d of larger bore, e.g. 2 inch, in which the liquid is maintained at said temperature to complete the pasteurization. The coil may be made of or lined with silver or other metal resistant to chemical action by the liquid and may be immersed in a tank containing a liquid such as water, oil or glycerine which is heated by immersion heaters &c. disposed in the upper portion of the tank adjacent to the section c of the coil. Alternatively only the section c may be heated to the pasteurizing temperature, the section d being covered with heat-insulating material. The Provisional Specification describes the use of a heat exchanger in which the hot liquid leaving the pasteurizer heats the cold liquid entering, and of thermostatically controlled means for switching on and off the electric heater for the pasteurizer.