baber/WOPTO huggingface dataset:
Patent GB-1186722-A (GB)
Title: Diaphragm for Flat Plate-Type Loud Speaker
IPC: H04R7/04
Filed: 1967-03-09
Abstract: 1,186,722. Diaphragms. NIPPON GAKKI CO. Ltd. 9 March, 1967 [6 April, 1966; 19 April, 1966; 3 May, 1966; 7 July, 1966], No. 11216/67. Heading H4J. A flat-plate type diaphragm for a loud-speaker is of conical form at the area to be driven by the driving means and composed of foamed resin material. The diaphragm is designed so as to reduce secondary and tertiary vibration modes. In an arrangement, Fig. 3, the diaphragm 2 is of foamed polystyrene, polyvinyl chloride, polyethylene, polyamide, polyurethane or ABS or other foamed resin &c., and is mounted in a frame with the driving means at the centre. Unwanted vibrations are reduced by radial riblike parts which may be straight or curved, and marginal areas arranged as a continuous or discontinuous zone around the edge of the diaphragm and made of lossy resinous material. The rib-like parts may be of the above-mentioned materials and may be formed on both sides of the diaphragm. (In the case of identical material for diaphragm and ribs, the whole is moulded as an integral unit.) Alternatively, the ribs are of aluminium foil or paper. Instead of ribs, reinforced regions comprising thermosetting resin may be mixed with the material of the diaphragm. For the marginal areas, regions of high absorption for vibrational energy are provided by applying a layer of thermoplastic resin to the surface or mixing it with the material of the diaphragm. Figs. 4-6 (not shown), illustrate an arrangement of a diaphragm of trapezoidal shape having two strengthening ribs which are used to suppress the tertiary vibration mode. Figs. 7-11 (not shown) illustrate a moving coil loud-speaker of deformed oval shape. This has curved radial damping ribs, which may be moulded with the diaphragm or be attached as strips of aluminium foil, paper &c. The diaphragm is screwed to the frame holding the driving means.
Patent GB-610660-A (GB)
Title: Improvements in sintering apparatus
IPC: F27B21/06
Filed: 1946-04-12
Abstract: 610,660. Sintering-machines. GELBMAN, L. April 12, 1946, No. 11344. [Class 82(i)] A rotary sintering-apparatus has an annular suction box 15, Figs. 1 and 2, for connection with a suction fan for providing the air draft needed for sintering and an annular furnace unit 16 rotative upon the suction box, the furnace unit comprising a number of radially disposed furnace pan sections 17. Means may be provided for air sealing the top of the suction box where it adjoins the furnace unit the said means preferably comprising troughs 28, Fig. 3, mounted around the inner and outer diameter of the suction box and flanges 29 mounted on the furnace unit and dipping into a sealing liquid 30 in the troughs. Each pan section is filled with material to be sintered as it passes under hopper 18, Fig. 2. Means are provided for igniting the material, preferably comprising an ignition hood 19, Figs. 1 and 2, mounted slidably on the bottom arms 61 of a supporting parallelogram of arms. The hood, travels a short arcuate distance with the pan on which it rests. A piston in cylinder 68, controlled by valve means 84, returns the hood to its starting position, rollers mounted on the hood moving over a track system 77 whereby the hood is lowered onto the next pan to be ignited. For removal of sintered material the pan section may be provided with hingedly mounted bottom grates 40. The grates are opened by the striking of a projection 44, Fig. 5, mounted on the grate against a corresponding stationary projection 45 on an arm 46 mounted on the side of trough 28. The sinter cake is then ejected for example by a ram 20, Figs. 1 and 2, controlled by a valve 104 which is actuated by lugs projecting from the pan sections. The grates are closed before refilling, for example by contact between rollers 49, Fig. 2, mounted on the grate, which engage on tracks 48. The suction box may be provided with a shut off plate 125 to prevent suction of air through a pan while its contents are being ignited.
Patent GB-113531-A (GB)
IPC: B23B5/42
Abstract: 113,531. Roberts, W. R., and Armstrong, F. April 2, 1917. Milling.-Consists of a work-holder for securing boring and other cutters while their cutting-edges are formed and backed off in a milling &c. machine. The base A is clamped by lugs a to the table of the machine and carries a rotatable graduated table B which can be secured by bolts b. This table carries a pair of jaws b<1>, b<2>, through the latter of which works a screw c. The cutter X is mounted between centres f<1>, f<2> in a frame F which is adjustable, to form a conical cutter on the plane of the centres in a lower frame G that can slide on guide-strips h on the table B. The correct backing-off angle is got by placing a tapered block d<1> between the jaw b<1> and the cutter X and a similar block between the cutter and the holding-screw c. After one side of a boring-cutter is finished, the screw is withdrawn and the cutter rotated about the centres.
Patent GB-833351-A (GB)
IPC: H01C10/26
Filed: 1956-04-13
Abstract: 833,351. Indicating apparatus. B. & H. INSTRUMENT CO. Inc. April 13, 1956 [March 20, 1956], No. 11403/56. Addition to 833,347. Class 106 (4). [Also in Group XXXVI] Indicia corresponding to progressively measured resistance values are printed, stamped or otherwise marked on a resistive tape 150 of an adjustable resistor as described in the parent Specification. To avoid short circuit between convolutions when the tape is wound on spools, an insulating strip 154 may be cemented to the tape or may be interwound as in 156.
Patent GB-114703-A (GB)
IPC: H01T13/14
Abstract: 114,703. Key, T. H. R. May 23, 1917. Sparking-plugs. - An annular spark gap is formed between a ball, cone, or like shaped central electrode c and the constricted end c of the plug body. The plug body is perforated for cooling. Mica washers are retained between a screwed ring and a shoulder in the casing. The relative position of the terminals may be adjusted by screwing in or out the central electrode.
Patent GB-1012259-A (GB)
Title: Bottle-holder unit forming an assembly component in a wine-bottle stand
IPC: A47B73/00
Filed: 1964-03-18
Abstract: 1,012,259. Bottle racks. VINS KIRAVI S. A. SOC. DES VINS DE FRANCE & ETABLISSEMENTS DUPUIS-KETIN. March 18, 1964 [May 24, 1963], No. 11511/64. Headings A4B and A4H. A bottle holder unit for assembly into a bottle rack consists of a body 1 of expanded polystyrene limited on the outside by rectilinear panels 2, 3, 4, 5 and bored internally to form chambers 6 each open at one end 7 and having a base 8 with air opening 9. One of the faces 2 has an opening 10 and the opposite face 3 has a lug 11 which fits into the opening 10 of an adjacent unit to secure the units together in the assembly of a bottle rack.
Patent GB-115247-A (GB)
IPC: H05B7/00
Abstract: 115,247. British Electric Transformer Co., and Berry, F. E. Jan. 31, 1917. Electrode furnaces.-In a furnace having three upper and three lower electrodes supplied w i t h current by independent threephase transformer windings d, e, f, the lower electrodes 1<a>, 2a, 3<a> are arranged in the side wall but nearer the bottom than the top, and a switch 7 is provided so that the lower electrodes can be short-circuited at starting or at other times. The cyclic order of the upper electrodes 1, 2, 3 may be the reverse of that of the lower electrodes 1<a>, 2a, 3<a>, to produce opposite circulations in the upper and lower parts of the bath; each upper electrode is preferably situated nearly opposite a lower electrode. Tappings may be taken from the primary or secondary windings to allow of regulation. The lower electrodes may be in contact with the charge or embedded in the lining.
Patent GB-1497364-A (GB)
Title: Storage batteries
IPC: H01M50/466
Filed: 1976-03-23
Abstract: 1497364 Secondary batteries GOULD Inc 23 March 1976 [31 March 1975] 11572/76 Heading H1B A plate 12 of a battery is held in position by a separator 18, the bottom of which is open or has slots 20 to allow sealing material, e.g. epoxy resin, to both anchor the plates, and seal the openings in the separator. The vertical edges of the separator may be formed by U-shaped members (Fig. 5, not shown) of heat shrinkable plastics film.
Patent GB-994708-A (GB)
Title: Prevention of coloured iron compounds in asbestos containing polyvinyl chloride resins
IPC: C08K5/31
Filed: 1962-03-27
Abstract: The discoloration on hot compounding of compositions comprising a vinyl chloride resin and iron-containing asbestos is avoided or removed by incorporating 0.25 to 20% by weight of the resin of an organic compound having in the molecule the group <FORM:0994708/C3/1> The resin may be polyvinyl chloride, a copolymer of vinyl chloride with vinyl acetate, vinylidene chloride or ethylene, or mixtures thereof with other resins, e.g. polyolefins and chlorinated polyethylene.  Many suitable organic compounds are listed including dicyandiamide, melamine, substituted guanidines, guanazole, ammelide, triazines and substituted triazines, guanamine and substituted guanamines, ammeline, 2-amino pyrimidine and substituted pyrimidines, and 2-amino imidazole and substituted imidazoles.  The compositions may also comprise pigments and fillers, e.g. calcium carbonate, silica, clays and titanium dioxide, and plasticizers, e.g. dioctyl phthalate, dibutyl sebacate, dioctyl sebacate, tricresyl phosphate, epoxidized soya bean oil and epoxidized esters of oleic, linoleic and ricinoleic acids; and may be formed into floor tiles. Examples describe compositions comprising a vinyl chloride/vinyl acetate copolymer, dioctyl phthalate, epoxidized soya bean oil, titanium dioxide, calcium carbonate and asbestos together with (1 to 9 and 12) dicyandiamide, (10 and 13) melamine, (11) dicyandiamide and melamine, (14 and 15) guanidine carbonate, (16) dicyandiamide and guanidine carbonate, (17 to 19 and 22) stearoguanamine, (20) acetoguanamine and (21) benzoguanamine; and compositions comprising polyvinyl chloride, dioctyl phthalate, epoxidized soya bean oil, titanium dioxide, calcium carbonate and asbestos together with (23 and 26) dicyandiamide, (24 and 27) melamine and (25) dicyandiamide and melamine.
Patent GB-1496356-A (GB)
Title: Refractory surfaced moulds
IPC: C04B35/42
Filed: 1975-04-15
Abstract: 1496356 Metal casting mould STEETLEY MINERALS Ltd 15 April 1975 [15 March 1974 19 Nov 1974] 11679/74 and 50082/74 Headings C1A and C1J [Also in Division B3] A metal casting mould of which at least the moulding surface comprises a refractory spinel is claimed per se. The spinel can be a synthetic spinel containing at least two or more of the oxides Cr 2 O 3 , MgO, Al 2 O 3  and FeO. The mould can be made by investment casting, viz. by coating a disposable pattern with a hardenable slurry containing the refractory spinel in finely divided form and a binder, applying to the coating one or more layers of a particulate refractory material with a particle size the same as or greater than the spinel and drying and/or hardening the resulting body of refractory material, and optionally one or more layers of one or more other hardenable refractory compositions, to form a support for the mould surface. The binder can be selected from ethyl silicate, colloidal silica, phosphoric acid, magnesium oxide or carbonate. Synthetic refractory spinels may be obtained by calcining precursor mixtures of the oxide constituents of the spinel or from used alumina or magnesium-chrome refractory bricks, e.g. in the case of an alumina refractory brick the spinel has a composition in the range (weight percentages): Al 2 O 3  greater than 30, FeO greater than 20, SiO 2  greater than 5. The use, to make a mould; of a synthetic refractory spinel having the following composition (per cent by weight) is exemplified: (i) 23À5% Cr 2 O 3  41À1% MgO, 20À4% Al 2 O 3 , 11À7% Fe 2 O 3  and further containing 2À3% SiO 2  and 1À0% CaO as impurities only. A mould formed with a surface made from a synthetic spinel comprising 70 parts (by weight) magnesium-chromium spinel (containing 23À5% Cr 2 O 3  and 41À1% MgO), 28 parts magnesia and 2 parts suspending agent is also exemplified.
Patent GB-220039-A (GB)
Title: Improvements relating to washers, or purifiers for use in the manufacture of gas
IPC: B01D47/02
Filed: 1923-05-02
Abstract: 220,039. Blakeley Sons & Co., Ltd., F., and Wright, J. C. May 2, 1923. Washers. - A gas washing plant comprises three Livesey tube washers, A, A<1>, A<2> arranged one above another, the gas entering by a pipe B and passing along the course shown by the arrows until it reaches the delivery pipe B<1>. Washing - liquid supplied' through an inlet D passes downward, in succession, through the three washers, each of which has an overflow fitting comprising an outlet pipe E leading to a vertical tube e surrounded by a pipe e<1> leading to the washer next below or to the liquor discharge pipe. The, correct level of the washing-liquid is maintained in each washer by regulating the height of the upper porton e<4> of the pipe e<1> by means of a handwheel e<5>. A tube e<3> connects the top of the tube e to the upper part of the corresponding washer.
Patent GB-1107183-A (GB)
Title: Lubrication method for the hot working of metals
IPC: B21C23/32
Filed: 1965-03-19
Abstract: In the hot working of metals, particularly the extrusion of steel, there is used as a lubricant a water-soluble salt whose melting point is below the working temperature and which is heated before use to at least its transition point.  The salt may be sodium or potassium carbonate, barium chloride or alkali acetates. To this salt may be added magnesium oxide and potassium chromate. The salt may be mixed with sodium nitrate, compacted and sintered.  After extrusion the salt residue is removed by washing in water.
Patent GB-130133-A (GB)
Title: A Device for Heating the Cooler Portion of Water in Steam Boilers.
Inventor: GRUNDY GEORGE
IPC: F22D7/04
Filed: 1918-07-20
Abstract: 130,133. Grundy, G. July 20, 1918. Conveying boiler steam through water space.- The water at the bottom of a boiler is heated by two steam pipes 5 conveying steam from the boiler steam space into a feed-tank or the like outside the boiler or into another boiler. A pipe 9 opening into the steam space and a pipe 12 passing upwards into the feed-tank are connected to transverse pipes opening into each end of the steam pipes.
Patent GB-659214-A (GB)
Title: Electric motor follow-up transmitting apparatus
IPC: G01F23/00
Filed: 1949-05-04
Abstract: 659,214. Electromagnetic interrupters. ELLIS, L. S. E. (Aerotec Corporation). May 4, 1949, No. 11933. (Class 38<v)] [Also in Group XXXVIII] An interrupter for an electric selective signalling system (see Group XXXVIII) comprises a solenoid 103, Fig. 3, intermittently energized to attract armature 104 which carries a hammer 106 to kick a, rocking arm 90 to close contacts 96, 16; a spring 102 returns the armature 104 to its original position, closing contacts 97, 17; the arm 90 acts as a pendulum and the frequency of oscillation is thus unaffected by the intensity of the energization of solenoid 103.
Patent GB-316337-A (GB)
Title: Rotary propeller
IPC: F42B10/22
Filed: 1928-04-23
Abstract: 316,337. Evans, W. E., (Vaprog Patent-Verwertungsges, zur Verwertung von Vacuum- Propeller-Erfindungen). April 23, 1928. Windscreens. - For the purpose of reducing resistance of a body moving in a fluid by producing a vacuum ahead it is fitted with a rotary propeller which comprises a conical, parabolic, or stream-line shaped hood provided with stepped shoulders forming pockets which are open in a direction opposite to the normal direction of rotation. The hood may in addition be fitted with propeller blades. Attached to the thin walls 2 of a metal propeller 1, Figs. 1, 2, and 3 are plates 3 forming suction pockets opening tangentially and helically. The propeller is driven by a shaft 2' or may be freely mounted. On 'trains 6 it is placed as a nosing on the fore .carriage. Fig. 8.
Patent GB-1413987-A (GB)
Title: Heat exchangers
IPC: F28F21/06
Filed: 1972-03-15
Abstract: 1413987 Tubular heat exchangers HALLTHERMOTANK INTERNATIONAL Ltd 14 March 1973 [15 March 1972] 11967/72 Heading F4S  In a shell and tube heat exchanger comprising a plurality of transverse synthetic plastics baffle plates 4 arranged to direct the shell-side fluid along a tortuous path between an inlet 5 and outlet 6, the peripheral edge of each baffle plate 4 is formed as a flexible leather edge 12 of reduced cross-section which seals in fluid tight manner against the interior surface of the shell 1. Each baffle 4 is suitably apertured to snugly receive the heat exchange tubes. Peripheral slots 8 are provided for correct location of baffle supporting straps (not shown). Preferably the baffles are made from high density polythene.
Patent GB-690155-A (GB)
Title: Electron beam controlling system
IPC: H04N9/28
Filed: 1951-05-22
Abstract: 690,155. Cathode ray tubes. RADIO CORPORATION OF AMERICA. May 22, 1951 [May 26, 1950], No. 11977/51. Class 39(i). An electron beam controlling arrangement for a cathode-ray tube comprises beam deflecting means disposed in a region spaced from a target electrode in the tube, means for directing electron beam components into the deflecting region at different angles, and means for energizing the deflecting means to cause all the beam components to scan a raster at the target electrode, and is characterized by the provision of electron optical means which are arranged adjacent to the paths of travel of the electron beam components and which are energizable to effect convergence of all the electron beam components at all points of the raster. The arrangement may be applied to the receiving tube of a colour television system which may be of the type shown in Fig. 4 comprising three electron guns 47, 48, 49 which produce beams 56, 58, 59 which converge on a mesh 53 and excite different fluorescent areas on the screen 51. Normally when the beams are deflected they cease to converge on the mesh 53 and to correct this an auxiliary focusing system is provided which may comprise two elliptical coils suitably energized at the horizontal and vertical scanning frequencies Fig. 3, (not shown). In the modification shown in Fig. 4 synch pulses at the vertical scanning frequency are fed to the wave shaping apparatus 63 which feeds a sawtooth and a parabolic waveform to the vertical control voltage generator 65; similar waveforms at the horizontal scanning frequency are fed to the horizontal convergence control voltage generator 67, and the combined output of the two generators is fed to the focusing anode 55. In a modification Fig. 5, (not shown), using a tube with a single electron gun the beam from which is rotated magnetically to provide effectively several beams, the required waveform derived from the deflection voltages is fed to a convergence coil instead of to a focusing anode,
Patent GB-494721-A (GB)
Title: Improvements in or relating to coverings for floors, walls, furniture or the like
IPC: E04F13/00
Filed: 1937-04-27
Abstract: 494,721. Coated fabrics. CONGOLEUMNAIRN, Inc. April 27, 1937, No. 12036. Convention date, May 14, 1936. [Class 140] A covering for floors, walls, furniture or the like comprises a sheet-like body having a composite cementating portion comprising a layer suitable for bonding to a floor &c. surface and an intermediate layer of permanently-plastic, cohesive material adapted to permit stripping of the covering and also relative movement between the covering and floor &c. As shown, a preformed ready-to-lay floor covering comprises an impregnated felt foundation 11 coated on one side with linoleum composition 10 and on the other with an outer layer 13 of a normally non-sticky clay/lignin/glycerine composition and an intermediate layer 12 of a permanently plastic rubber/rosin composition. The layer 13 is activated by water when applying the covering to the floor 15. A molasses /clay composition may replace or be admixed with the clay / lignin /glycerine composition ; and the rubber / rosin composition may be replaced by rosin, rosin oil, soft resin or bituminous compositions, preferably containing rubber, or may be softened, e.g. with a drying-oil cement. Alternatively the normally non-sticky layer may comprise a composition, e.g. of nitrocellulose, rosin and dibutyl phthalate, adapted to be activated by a solvent other than water, e.g. a mixture of ethyl acetate, toluol and ethyl alcohol ; and the permanently - plastic layer may comprise a water-soluble or water-dissociable layer, e.g. of glue /glycerine /calcium chloride composition. The sheet material may comprise woven fabric and may be provided with a decorative surface of paint or enamel. A sheet of felt, impregnated or unimpregnated, may be provided with a composite coating on one or both sides.
Patent GB-670853-A (GB)
Title: Land mine
IPC: F42B23/00
Filed: 1950-05-15
Abstract: 670,853. Land mines. POUDRERIES REUNIES DE BELGIQUE SOC. ANON. May 15, 1950. [March 2, 1950] No. 12068/50. Class 9 (ii). The casing of a land mine is in two part 1, 2 held together by non-metallic screws 3 and closed by a cover 5 with radially extending ribs 6 resting on a deformable torus 7 supported on ribs 9 integral with part 1 of the casing. The cover is so arranged by means of studs 25 that the ribs 6 bisect the angles between successive ribs 9, so that pressure on the cover causes a sinuous deformation of the torus, which is composed of elastic fibres in a textile sheath. A plug 10 is screwed into a central opening 11 in the cover 5. Beneath the ribs 9 the casing is filled with an explosive charge 13 and a booster charge 13a introduced through an opening in the base, which is closed by a plug 15. The charge 13a is fired by a primer 14 initiated by a percussion fuze 20, 21, 22 as described in Specification 670,852. A packing 16 of rubber or polyvinyl chloride, which renders the mine watertight, is held between the plug 10 and the cover 5 along its inner periphery and between the casing and a ring 8 along its outerperiphery.
Patent GB-841749-A (GB)
Title: Lignin-modified phenolic resins
IPC: C08G8/28
Filed: 1958-04-16
Abstract: Alcohol-soluble lignin-modified phenolic resins are formed by the condensation of "low-temperature lignin" in the presence of an acid catalyst at a temperature of at least 130 DEG C. with a phenolformaldehyde condensate.  "Low temperature lignin" is obtained by removal by hydrolysis of cellulose and hemicellulose from cellulosic material using aqueous hydrochloric acid of up to 42% concentration by weight at a temperature preferably not exceeding 30 DEG C.  A resol type resin is prepared, which is diluted with phenol (to avoid spontaneous hardening) before the lignin is added.  Water formed during the reaction is distilled off, the mixture neutralised and filtered, and the excess phenol removed under reduced pressure. Besides phenol the xylenols may be used to produce the resol, and the formaldehyde may be in the form of formalin, paraformaldehyde or trioxy-methylene.  Modifications of the process described are:-(1) The lignin and acid catalyst can first be added to part of the phenol diluent, the mixture allowed to stand until the exothermic reaction ceases, and then condensed with the resol, (2) A novolac can replace the resol, the lignin-modified novolac subsequently being hardened with hexamethylene tetramine, (3) A crude cellulose hydrolysate containing lignin and sugars can be used, (4) A thermoplastic or an uncured thermosetting synthetic resin e.g. terpene modified phenolic may be included in the reaction mixture producing the novolac or the resol.  Eleven examples describe the invention and its modifications and four comparative examples are included. Specified uses for the product are (1) moulding powders, (2) foundry sands, (3) ionexchange resins, (4) laminates. Specifications 827,921 and 827,922 are referred to.