baber/WOPTO huggingface dataset:
Patent GB-926277-A (GB)
Title: Full range electroacoustic transducers
IPC: H04R9/04
Filed: 1961-07-03
Abstract: 926,277. Loud-speakers. BOYEN & RICH Inc. July 3, 1961 [July 18, 1960], No. 23983/61. Class 40 (4). In a moving coil electroacoustic transducer a substantially sheet form of magnetic flux extends over a prescribed area from a pole adjacent the middle of the area to a second pole around the periphery of the area and a diaphragm extends over the said area and carries a continuous flat spiral coil over substantially the whole area between the poles so that an alternating current in the coil will produce mainly isophasal motion of the whole of the diaphragm. Fig. 1 shows a transducer in which a sheet of magnetic flux is produced between an annular polepiece 21 and a magnet 11 mounted in the centre thereof, two similar units being mounted with a diaphragm 31, Fig. 2, clamped therebetween to be in the same plane as the magnetic flux sheet between the opposed N poles of magnets 11 and 12 and the annular polepieces. A flat spiral coil 32 is mounted on the diaphragm and extends into the area between the opposed magnets so that substantially the whole of the diaphragm is active. It is suggested that the outer polepieces and the magnet might be circular, Fig. 8, not shown. Diaphragm construction.-The diaphragm may be a sheet of nylon fabric or a thin sheet of suitable plastic or aluminium foil having the coil cemented to its surface by a permanently non-rigid cement if a hard material, e.g. polyester film, is used a damping material, e.g. woven nylon mesh, polyfibrous paper, or a plasticized film material, may be applied to the diaphragm to absorb flexural vibrations. In an alternative form the diaphragms may be mounted via a compliance rim 42, Fig. 10, of, e.g., rubber and, in addition, to enhance the frequency response the diaphragm may be loaded by a copper ring 51, Fig. 12, mounted around the periphery and the diaphragm stiffened and loaded by bars 52. Specification 193,339 is referred to.
Patent GB-1498439-A (GB)
Title: Electronic component or assembly of components with insulating envelope
IPC: H01C1/024
Filed: 1976-04-27
Abstract: 1498439 Printed circuit assemblies; resistors WELWYN ELECTRIC Ltd 27 April 1976 [3 June 1975] 24008/75 Headings H1R and HIS  A cylindrical resistor (Figs. 1, 2, not shown) comprising an e.g. ceramic insulant body carrying a resistive film with end caps and leads is enclosed in a two part thermoplastic envelope contoured internally to fit the resistor and grooved to retain the leads. The discrete semicylindrical parts have mating edge surfaces with integral knife edge projections each contacting the opposed edge surfaces, and the assembly is subjected to ultrasonic energy and pressure to melt and collapse the projections whereby the two parts are hermetically welded together. Other similar projections may be provided within the internal grooves. An electronic circuit, e.g. printed, may be formed (Figs. 3, 4) on an insulant, e.g. ceramic, substrate 14 comprising resistors, capacitors, transistors and the like with terminal leads 15 extending therefrom. A two part envelope is defined by thermoplastic sections 16, 17 to accommodate the substrate, and have grooves 18 accommodating the leads 15, with engaging mating edge surfaces 19, 20 provided with integral knife edge projections 21, 22 engaging the opposed edge surfaces. After arrangement of sections 16, 17 adjacent the substrate, the assembly is subjected to ultrasonic energy and pressure to melt and collpase the projections and seal the two elements together into an integral envelope.
Patent GB-150290-A (GB)
Title: Improvements in molding devices for use in casting pig iron
IPC: B22D3/02
Filed: 1920-08-18
Abstract: 150,290. Shutts, B. A., and Goodwin, J. O. Aug. 18, 1919, [Convention date]. Moulding-machines; patterns.-Pig and sow moulds are formed in a foundry floor by a polygonal pattern-roller 1 traversed over the sand, formed in suitable steps, the faces of the roller having pattern segments 4, 5 for the pigs and sows respectively. The roller may be weighted at 8.
Patent GB-587148-A (GB)
Title: Improvements in goggles
IPC: G02C7/10
Filed: 1944-12-02
Abstract: 587,148. Goggles. DUNLOP HUBBER CO., Ltd. Dec. 2, 1944, No. 24116. Convention date, Dec. 30, 1943. [Class 97 (i)] The frame comprises a moulded sponge rubber face part and a flexible rim part of substantially L-shaped cross - section secured thereto and having means integral therewith for fastening a transparent window in the channel between the two parts. The Figure shows a cross-section through the centre of goggles having a single window of plastic material. The face part 2 of moulded sponge rubber or latex sponge covered with stockinette material is secured to a more rigid rim part of rubber of which the flange 1a is reinforced with fabric and which has rubber buttons 5 integrally moulded therewith. The buttons terminate in heads which pass through holes in the window 6 which is thus secured and rests in the channel between the two parts. Tabs 8 for the head-bands have clips to which an addition window, for example of "Polaroid" (Registered Trade Mark), may be attached.
Patent GB-354718-A (GB)
Title: Improvements in and relating to shot gun cartridges
IPC: F42B12/38
Filed: 1930-02-12
Abstract: 354,718. Shot-gun cartridges. IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London, BROWNSDON, H. W., 43, St. Agnes Road, Moseley, Birmingham, NIMMO, W. R., Sparrows Herne Hall, Bushey Heath, Hertfordshire, and POLLITT, G. P., Imperial Chemical House, Millbank, London. Feb. 12, 1930, No. 24156/29. [Class 9 (i).] A shot-gun cartridge is provided with a lightproducing tracer pellet situated centrally at the base of the shot charge and loosely located in a perforated wad in that position, the said pellet comprising a mass of metal of high density, together with a highly compressed light-producing compound and an igniting charge therefor. According to one construction, the tracer pellet consists of a copper shell l, as shown in the Figure, loosely located in a central aperture in a wad f at the base of the shot charge g. The lower open end of the pellet communicates with the powder charge c through apertures j, k, provided respectively in the wad e and disc d. The pellet contains a mass of lead m, a compressed magnesium and barium peroxide light-producing mixture n, and a comparatively lightly pressed magnesium and barium peroxide igniting mixture o. On firing, the shot charge and the pellet are discharged from the cartridge case a, the light-producing mixture in the pellet being ignited by the flame from the powder charge c. As the pellet is positioned centrally, it serves to indicate the flight of the average path of the shot charge. The composition o may be held in place by a light celluloid disc or by means of a thin layer of varnish. In a modification, the composition o is replaced by a composition sensitive to shock or friction such as one containing mercury fulminate, potassium chlorate and antimony sulphide. In such case, the tracer pellet is positioned so that some of the small shot of the charge g function as anvils for the ignition of the sensitive priming composition. For instance, it may be placed mouth upwards at the base of the charge.
Patent GB-296347-A (GB)
Title: Improvements in and relating to methods of and apparatus for storing alkali and other readily oxidizable metals
IPC: B01J4/02
Filed: 1928-08-22
Abstract: 296,347. British Thomson-Houston Co., Ltd., (Assignees of Brophy, D. H., and Ruggles, W. A.). Aug. 29, 1927, [Convention date]. Drawings to Specification. Low-pressure. metallic-vapour apparatus. - Caesium or other readily oxidizable metal is enclosed in a, glass or metal capillary tube. The ends are closed and the tube stored for use, or is cut into convenient lengths and the ends closed by spot-welding, pressure, sealing, &c. If the caesium &c. is to be used in connection with vacuum tubes, the capillary tube is melted by a high frequency current at a temperature sufficiently low to avoid injury to the vacuum tube.
Patent GB-1125701-A (GB)
Title: Apparatus for supplying pressurised gas
Inventor: TOWERS ALAN
IPC: B67D1/10
Filed: 1964-06-11
Abstract: 1,125,701. Iradiation apparatus; U/V sterilization of gases. GASKELL & CHAMBERS Ltd. 10 Sept., 1965 [11 June, 1964], No. 24232/64. Heading H5R. A source of compressed sterilized gas comprises a compressor, an elongated container having an inlet and outlet at opposite ends thereof, said inlet (or said outlet) being connected to the outlet (or inlet) of the compressor, the apparatus having an outlet for the compressed sterilized gas which is the outlet of the container or the compressor, and including an elongated source of U/V radiation within the container the arrangement being such that in use the gas flowing through the container flows along substantially the whole length of said radiation source and substantially all the gas flowing through the container is exposed to the U/V radiation, the apparatus also including control gear for the compressor and the radiation source such that the compressor cannot be started until the radiation source is energized. Preferably the container is arranged to extend vertically when in use, the radiation source being carried by the upper lid of the container. The sockets engaging the contacts at the opposite ends of the radiation source are carried on rods suspended from said lid, the rods being electrical conductors by which connections to the sockets are made. A filter device is preferably interposed between the compressor and the container.
Patent GB-944095-A (GB)
Title: Improvements in agricultural machines
Inventor: BAMFORD HENRY VINCENT
IPC: A01D78/02
Filed: 1959-07-15
Abstract: 944,095. Haymaking machines. BAMFORDS Ltd. July 8, 1960 [July 15, 1959], No. 24258/59. Heading A1F. Relates to haymaking machines of the general kind wherein a frame 10 carries a tine-drum 18 rotatable about a transverse axis on the frame and carrying rows of resilient tines 20. According to the invention, the frame is arranged on lockable swivel-wheels 35 so that the drum can rotate about an axis oblique to the direction of travel whereby the crop is directed laterally and rearwardly between deflecting baffles 27 on to a strip of ground adjacent to that on which it previously lay. The baffles are adjustable by stays 29 engaging alternative holes 28. The device is drawn by a tractor 9 through a draught-member 40 and the tine-drum is driven through a jointed shaft 22 and belt gearing. The swivel axes of the wheels 35 are adjustable by levers and quadrants 39, 36.
Patent GB-1530137-A (GB)
Title: Electrostatic dust precipitators having rectifier control circuits
IPC: H02M1/08
Filed: 1975-06-06
Abstract: 1530137 Control circuits for electrostatic precipitators; converting LODGE-COTTRELL Ltd 25 May 1976 [6 June 1975] 24353/75 Heading H2H and H2F A power supply for an electrostatic precipitator is controlled by a circuit comprising an oscillator 25, a pair of amplifiers 26, 27 for amplifying the oscillator output pulses and a pair of pulse transformers 29, the primary windings of which are connected to the amplifier outputs and the secondary windings control the conduction of a pair of rectifiers 40, 41. The power supply is similar to that described in Specification 1,470,170 but the circuit 21 including the oscillator, the amplifiers and the pulse transformers is different. The oscillator 25 supplies pulses to the amplifiers 26, 27 at a frequency determined by a timing circuit 32, the amplifiers being controlled by a bistable circuit 28 so that one amplifier is operative whilst the other is inhibited during each half cycle of the mains supply at terminals 14. The pulses from the amplifiers are supplied to the transformers 29 to trigger the thyristors 40, 41 during alternate half-cycles of the mains supply. A feedback circuit 20 controls the circuit 21 by adjusting the firing points of the thyristors to maintain the precipitator voltage at its optimum value and a by-pass circuit 22 interrupts the power supply to the precipitator if arcing persists for four mains supply cycles.
Patent GB-1067933-A (GB)
Title: Improvements in or relating to infra-red radiant heaters
IPC: F23D14/82
Filed: 1964-06-11
Abstract: 1,067,933. Infra-red burners. A. C. W. JOHNSON. June 11, 1964 [June 11, 1963; May 28, 1964], No. 24365/64. Heading F4T. A burner 12 has a conduit 16 for gas/air mixture, slotted at 18 to house a mesh of wire screens 20 or nested corrugated metal strips to form multiple mixture outlets, and a radiant grid 14, which reflects heat back and intensifies radiation. The grid 14 is provided with indentations 22, 24 raised on one or both sides of the sheet to form openings 28 normal to the plane of the sheet. The indentations may be longitudinally or circumferentially directed and may be open at one end only and the grid may be plane and extend laterally from the outlet 18. The grid is held in place by joggled strips 34 secured by screws 36 to the conduit 16 and overlapping the flanged edges 38 of the grid 14.
Patent GB-247491-A (GB)
Title: Improvements in or relating to sparking plugs for internal combustion engines
IPC: H01T13/46
Filed: 1925-09-30
Abstract: 247,491. Isaksson, C. J. E., and Tillquist, H. T. July 2, 1925, [Convention date]. Sparking-plugs. - A chamber 9 is formed at the inner end of the plug and communicates with the combustion chamber by way of a narrow annular passage 7. Opposite each spark gap the passage is enlarged by cutting away either the flange 11 or the insulator 2, or both these members.
Patent GB-462244-A (GB)
Title: Improvements in the manufacture and production of granular fertilisers
IPC: C05C3/00
Filed: 1935-09-02
Abstract: A granular mixed fertilizer is obtained by granulating a moist mixture of ammonium chloride and/or ammonium sulphate with finely powdered calcium carbonate together with magnesium carbonate, preferably with pulverized dolomite.  The granulation may be effected in a rotary tubular furnace.  Specification 403,781 is referred to.
Patent GB-926012-A (GB)
Title: Apparatus for continuous pressure leaching, digestion or hydrolysis of titaniferous ores
IPC: C22B3/02
Filed: 1960-07-13
Abstract: <PICT:0926012/III/1> A process for the leaching of titaniferous ores comprises laxiviating the ore (e.g. ilmenite) with mineral acids, allsalies and/or ammonia at a high temperature (e.g. 160 DEG -200 DEG C.) and pressure (e.g. up to 300 p.s.i.) in the apparatus shown in Fig. 1 (see also Group II).  The apparatus is characterized by the inclusion of a plurality of solution conducting pipes 25, 30, 31 in separate interconnected circuits supplied with heating jackets 27 and cooling jackets 27 around pipe 32.  There is also an expansion chamber 18 and a separating means at 33 and 34.  The reaction of sulphuric acid with ilmenite in the presence of SO2 is said to proceed in the following manner:-  <FORM:0926012/III/1> U.S.A. Specifications 1,402,256, 1,410,056, 1,429,841, 1,655,940, 1,888,993, 1,919,425, 1,959,765 and 2,127,247 are referred to.
Patent GB-828576-A (GB)
Title: Improvements in devices for printing or cutting stencils on typewriters
IPC: B41J3/24
Filed: 1957-08-02
Abstract: 828,576. Typewriters. STIELOW, J. H. Aug. 2. 1957 [Sept. 21, 1956], No. 24538/57. Class 100(4) Stencil cutting; card feeding and guiding arrangements. A device for printing address stencils comprises an arcuate frame-like holder 1 reciprocated across the typewriter platen 6 by toothed wheels on the platen spindle 7 which engage an arcuate toothed rack on the frame 1. The frame 1 is U-shaped with a cranked front guide 1<SP>1</SP> and rear cranked part 4a and is guided, with the assistance of two lugs 1a, in arcuate grooves 3a of a holder 3 secured to the typewriter carriage. A spacer 5 with a housing 5a to carry the lower edge of a stencil 2 may be fitted in the lower part of the frame. Web guiding. A web is fed round a guide rod 9 over the platen 6 between feed rollers 10 to a take-up roll. The rollers 10 are mounted on a shaft 15 supported centrally by a member 20, perpendicular to shaft 15, and pivoted in a cross shaft 13. Shaft 13 is itself pivoted in the holder 3 and spring biased so the rollers 10 engage the platen. Dust excluders. The guide 16 for the web W serves as a dust collecting plate. Cutting arrangements. The shaft 13 is polygonal and serves as a transverse tearoff bar.
Patent GB-360984-A (GB)
Title: Improved method of, and apparatus for, automatically operating colliery coal tipplers and the like
IPC: B65G67/00
Filed: 1930-08-16
Abstract: 360,984. Tipping - apparatus. RICHARDS, W. J., Wyndholme, Sunnyside, Worksop, Nottinghamshire, and BARTLETT, R., The Circle, Rossington, Yorkshire. Aug. 16, 1930, No. 24612. [Class 78 (iv).] An automatically operating coal tub or like tippler has a compressed air installation for operating the tippler control gear, the air supply being controlled by electrically - operated valves. The power-driven rotary tippler a is normally held by catches b on a rod c. By means of a hand-lever d<1> a tub s is released from the tub-holding gear d and the tub gravitates forward and engages a trip gear e to operate contacts in a contact box f in the electrical system and so actuating an electricallyoperated valve g in the compressed air system A which releases air from a cylinder p and the holding gear is reset for the next tub by gravity, springs, or the like. The first tub runs into the tippler which then drops and engages the usual power rollers and rotates until a striking plate n engages a lever o which closes contacts in a box o<1>. This opens the valve g to admit air into the cylinder p to release the next tub. The emptied tub is ejected by the following tub and as it passes from the tippler engages a star wheel h which closes contacts in a box j and so energizes a valve k to admit air to a cylinder m, the piston of which releases the tippler catches b so that the tippler rotates. The movement of the rod c carrying the tippler catches actuates through links, not shown, contacts in a box q which de-energizes the valve k controlling the cylinder m and the tippler catches are thus reset. The operation now continues automatically.
Patent GB-480939-A (GB)
Title: Improvements in or relating to perambulators
IPC: B62B9/18
Filed: 1937-09-09
Abstract: 480,939. Vehicle spring suspensions. EDELBERG, B. Sept. 9, 1937, No. 24636. [Class 103 (ii)] Each wheel of a perambulator is mounted on the free end of a lever adapted to rock, against the tension of a suspension spring, about a pivot extending outwardly from the body or frame, means being provided for adjusting the tension of the suspension spring. Preferably the lever has two arms, one carrying the wheel and the other being connected to the spring. As shown each wheel 1 is carried by a lever 3 pivoted to an axis 4 projecting from the frame 5. The levers 3 on each side are provided with extensions to the loops 6 of which is attached a suspension spring 7. A further extension on the rear lever 3 is attached to a spring 9 the tension of which is adjustable by a wing nut 12 and screw 10. In the form shown in Fig. 5 each lever 3 is provided with its own spring 7 which may be adjustably tensioned by nut 12 and screw 10. The handles 13 are provided with supports 14 to receive an auxiliary seat 16 and a bag or receptacle may be provided comprising a panel 17 connected to the rear wall 18 of the body by a flexible band 19 reinforced by slats 20. The top of the panel 17 may be provided with a flap 21 adapted to be clipped to the rear wall 18 by press studs 22.
Patent GB-1211726-A (GB)
Title: Loop antenna
IPC: H01Q1/36
Filed: 1967-11-03
Abstract: 1,211,726. Aerials; radio direction finders. LTV ELECTROSYSTEMS Inc. 3 Nov., 1967 [9 Dec., 1966], No. 24664/70. Divided out of 1,211,723. Headings H4A and H4D. A cross-loop type aerial comprises a closed core 30, Fig. 3, of ferromagnetic material, formed by two pairs of parallel rods 31, 33 and 32, 34 upon which are wound respective pairs of coils 35, 36 and 37, 38. Each pair of coils is so connected that magnetic fluxes due to incident radio waves produce voltages which are additive, whereas the magnetic fluxes induced by a current flowing in the coils are opposed. The two coils may be of opposite hands and have their finish ends connected together (Fig. 1, not shown) or they may be of the same hand and have the finish end of one connected to the start end of the other (Fig. 2, not shown). As described, the two pairs of rods are of equal lengths and are disposed at right angles to each other, and all coils are of identical electrical dimensions. The output at terminals A, B from the pair of coils 35, 36 is independent of the output at terminals C, D from the pair of coils 37, 38, and the two outputs are effectively in quadrature. As shown in Fig. 3, the outputs are applied through conventional circuitry for omni-directional Loran- A reception. In another application, the outputs are fed to the orthogonal fixed windings of the resolver or goniometer of a directionfinding system which may comprise automatic tracking in association with a gyroscopic compass system. In a mounting structure for the aerial shown in Fig. 3, foamed plastics sheets 80, 81, Fig. 5, fill the centre of the core 30, and partially surround it. The sheets 80, 81 are clamped between two printed circuit board electrostatic shields 83, 84, which project beyond the core 30. The shield board 83 carries sockets 86, for fastening the assembly to its support, and conduit connectors 87, 88 for leads to the two pairs of coils of the aerial. A casting plastics material is applied on top of the shield board 83 and around the sockets 86 and connectors 87, 88 to form a plate 89. The same material is also applied between the projecting edges of the shield boards 83, 84 to form a collar 91. The screening strips on the shield boards 83, 84, which run radially to their edges, are connected together by strips 85. The structure is stated to be particularly suitable for mounting on aircraft and the like.
Patent GB-499473-A (GB)
Title: Improvements in or relating to printers' hand rollers for use in the production of lithographic prints
IPC: B41F3/30
Filed: 1938-08-23
Abstract: 499,473. Inking-apparatus. KRAUS, F. Aug. 23, 1938, No. 24761. Convention date, Oct. 1, 1937. [Class 100 (ii) ] A hand roller for inking lithographic plates has end axles f surrounded by sleeves c of leather, rubber or like friction material, these sleeves being surrounded by rigid sleeves d having openings i by which the operator may compress the sleeves c to apply braking pressure to the axles. Protective sleeves g of yielding material such as leather or rubber maybe applied to thesleevesd.
Patent GB-277715-A (GB)
Title: Improvements in and relating to the production of nitrogenized metallic compounds
IPC: C01C3/00
Filed: 1927-09-20
Abstract: 277,715. Goldschmidt, R. B., and Coulier, S. Sept. 20, 1926, [Convention datel. Materials and compositions for making coke and other products.-Cyanides, nitrides and other nitrogen compounds are prepared by treating with nitrogen or gaseous nitrogen compounds such as ammonia a heated mixture containing active carbon and alkali, alkaline-earth, or metal compounds such as oxides, hydrates, carbonates, sulphides or nitrates, prepared by the wet or dry carbonization of carbonaceous substances such as wood, spent malt, oil cake, &c. mixed with alkali &c. compounds, active carbon being added before or after the carbonization. Substances to increase the activity of the carbon, such as zinc or magnesium oxides, chlorides or phosphates, and substances which serve as catalysts during the nitrogenation such as finely divided iron, manganese, chromium, nickel, cobalt, or their oxides or halogen compounds such as sodium chloride or fluoride may be added prior to carbonization. Gases which serve to activate the carbon such as carbon monoxide or dioxide, hydrogen, nitrogen, chlorine or water vapour are passed over the mass during carbonization. The carbonization may be effected in the upper part of the furnace in which the subsequent nitrogenation is carried out. The residual carbon after separation of the cyanides &c. is added to the materials to be carbonized.