baber/WOPTO huggingface dataset:
Patent GB-1414497-A (GB)
Title: Transporter for substantially flat articles
IPC: B65G15/60
Filed: 1972-10-05
Abstract: 1414497 Air cushion conveyers POST OFFICE 5 Oct 1973 [5 Oct 1972] 46043/72 Heading B8A An air cushion conveyer for flat articles, e.g. envelopes, comprises a guide surface having apertures therein connected to a supply of pressurized air to form air jets and a belt movable to convey articles along the guide surface with part of each article in contact with the belt and part parallel to the guide surface. The figures show two alternative embodiments. In Fig. 1, envelope 12 is conveyed by horizontal endless belt 4 and supported against vertical guide surface 1 provided with apertures 2. In Fig. 3, both belt 4 and guide surface 1 are horizontal, the belt having a smaller width than the guide surface so that edges of an envelope 12 being conveyed by belt 4 are attracted towards guide surface 1 by careful selection of aperture shape and direction and pressure of air.
Patent GB-1071291-A (GB)
Title: Improvements relating to kettles
Inventor: HARBOUR WILLIAM DAVID
IPC: A47J27/21
Filed: 1962-12-07
Abstract: 1,071,291. Handles for kettles. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 19, 1963 [Dec. 7, 1962], No. 46303/62. Heading A4A. A top piece 6 and liner 14, both of thermally insulating material, are secured to a channel-section metal kettle handle to protect a user's hand, the liner having edges 18 which stand proud of the legs 2, 3 and the bridge 4 of the handle and being secured to the top piece by screws 17 passing through openings 5 and engaging in bosses 7, 8. The legs of the liner are splayed to ensure a snug fit within the legs 2, 3 of the handle which are secured to the kettle by threaded studs (21, Fig. 1) brazed to the legs and passing through apertures in the kettle for engagement by nuts. In a modification the liner is of channel section fitting within the handle and stands proud thereof.
Patent GB-1205803-A (GB)
Title: A machine for stamping post or other documents
IPC: B41K3/04
Filed: 1967-10-12
Abstract: 1,205,803. Stamping-machines. COMMISSARIAT A L'ENERGIE ATOMIQUE. 12 Oct., 1967 [3 Nov., 1966], No. 46566/67. Heading B6D. A machine for stamping post or other documents comprises a plurality of, e.g. four, permanently inked printing surfaces 11 on a block 15 rotatably mounted on a shaft 13, the block being rotated a quarter turn after each impression by a spring-loaded lever 20 which engages lugs 18 mounted on a plate 19 fixed to the shaft 13. The printing head is depressed by a pedal 2 acting on the printing head through a stress-limiting spring 10 and levers 7, 6. The printing surfaces 11 are mounted on supports 12 clamped by rubber pads 14.
Patent GB-1096067-A (GB)
Title: Electrodeposition of resinous, film-forming coatings
IPC: C09D5/44
Filed: 1965-11-04
Abstract: A surface is coated electro-phoretically by (1) applying thereto an electrically conductive layer comprising conductive particles, e.g. C, Zn, Ni, Al, Cr, Mn, Cu, Cd or steel, in a carrier such as water, organic solvent or resinous binder, and (2) employing the coated surface as an electrode in an electro-phoretic deposition process using another conductive electrode wherein the electrodes are in contact with an aqueous bath containing an electro-depositable resinous film-forming coating composition.  Such a composition may comprise (a) an at least partially neutralized reaction product of a drying oil fatty acid ester and an alpha, beta-ethylenically unsaturated dicarboxylic acid or anhydride, (b) an at least partially neutralized interpolymer of an unsaturated carboxylic acid and a hydroxalkyl ester thereof, and an amine-aldehyde resin and/or polyepoxide, or (c) an alkyd resin and an amine-aldehyde resin. Many examples are specified of resinous binder for the conductive particles, and of electro-depositable coating composition.  Either may contain pigments, e.g. iron oxides, lead oxides, SrCO3, carbon black, TiO2, talc, BaSO4, cadmium yellow or red or chromic yellow, and other additives such as dispersing agents e.g. oil-soluble sulphonate and non-ionic surfactant, and colloidal silica. Multiple coatings may be obtained by repeating the steps (1) and (2).  The surface may be conductive, e.g. of steel, Al or Cu, or non-conductive, e.g. of wood, plastics or paper.  A metal surface may be provided with an electro-deposited primer coating.
Patent GB-1337668-A (GB)
Title: Purification of commercial grade phosphoric acid
IPC: C01B25/234
Filed: 1971-10-08
Abstract: 1337668 Purification of phosphoric acid R A OETKER [trading as CHEMISCHE FABRIK BUDENHEIM RUDOLF A OETKER] 8 Oct 1971 [12 Oct 1970] 46940/71 Heading C1A A water-soluble alcohol is added to commercial grade phosphoric acid in an amount of from 2 to 5 times the quantity in which the crude acid is present, the alcohol being added in the presence of ammonia or an ammonium compound in a quantity of from 0À06 to 0À12 mol NH 3  per mol of P 2 O 5 , the-deposit being separated and the alcohol distilled from the solution. The preferred alcohol is isopropanol. The process removes iron and aluminium impurities and also any titanium and calcium which may be present.
Patent GB-973029-A (GB)
Title: Process for the preparation of ª‡-benzimidazolyl-ª‰-benzoxazolylethylene derivatives
IPC: C07D413/06
Filed: 1962-12-13
Abstract: a -Benzimidazolyl -b - benzoxazolyl - ethylene compounds of formula <FORM:0973029/C1/1> in which R1 and R2 each represent a hydrogen atom or an alkyl group and R3 a hydrogen atom or an alkyl, aralkyl, hydroxyalkyl or alkenyl group are prepared by heating a 3-[benzimidazolyl-(2)] -3- hydroxy-propionic acid of formula <FORM:0973029/C1/2> with an ortho-amino hydroxybenzene of formula <FORM:0973029/C1/3> preferably in the presence of a phosphoric acid or boric acid. Examples are given of the preparation of compounds of the formula (1) given above in which (a) R1, R2 and R3 are H, (b) R1 and R3 are H and R2 is 51-methyl, and (c) R1 and R2 are H and R3 is hydroxyethyl.  3-[Benzimidazolyl-(21)]-3- hydroxypropionic acid used as starting material is prepared by dissolving malic acid and 1,2-diaminonbenzene in hydrochloric acid, refluxing and adding an alkali metal hydroxide to the mixture.ALSO:a -Benzimidazolyl-b -kenzoxazolyl-ethylene compounds of formula <FORM:0973029/D1-D2/1> in which R1 and R2 each represents a hydrogen-atom or an alkyl group and R3 represents a hydrogen atom or an alkyl, aralkyl, hydroxyalkyl or alkenyl group, may be used as optical brighteners for textile materials, e.g. an undyed textile material prepared from cellulose and polyamide fibres.  The bath used may contain per litre 2 gms of a synthetic detergent and 0.005 gns of the optical brightening agent.
Patent GB-1525569-A (GB)
Title: Luminaires
IPC: F21V29/00
Filed: 1974-10-31
Abstract: 1525569 Lighting fittings THORN ELECTRICAL INDUSTRIES Ltd 17 Oct 1975 [31 Oct 1974] 47256/74 Heading F4R The central portion of a plastics refractor or diffuser 20 in a lighting fitting is shielded from the full thermal radiation from the light source 14 by a heat distributing member 22 having through apertures or perforations 23. The member 22 may be a metal plate or a wire mesh and is supported transversely from a reflector 12 at a third of the distance from the refractor/ diffuser 20 to the source 14. The lighting fitting also includes a stand-by lamp unit 32, 34 in which a photo-cell 30 senses operation of the main source 14 to energize the stand-by source 34 in the event of failure, or during warm-up of the main source 14. The latter is a high pressure Hg/quartz arc lamp.
Patent GB-1407008-A (GB)
Title: Process and apparatus for the continuous production of  vanadium oxytrichloride
IPC: C01G31/04
Filed: 1972-10-16
Abstract: 1407008 Vanadium oxytrichloride FEMIPARI KUTATO INTEZET 16 Oct 1972 [15 Oct 1971] 47549/72 Heading C1A Continuous production of vanadium oxychloride by evaporating a vanadium tetrachloride containing not more than 20% vanadium oxychloride, mixing the vapour with preheated air in a 20-80% excess and burning the mixture in a flame reactor at 400‹ to 450‹ C. and condensing the VOCl 3  vapours obtained. The condensed vapours may be further purified by distillation. Apparatus consisting of a VCl 4 /VOCl 3  container, an evaporator, a means for drying and preheating the air and a flame reactor is also claimed.
Patent GB-1285067-A (GB)
Title: Improvements in or relating to the reproduction of a picture
IPC: H04N19/90
Filed: 1969-09-26
Abstract: 1285067 Facsimile DR-ING RUDOLF HELL 26 Sept 1969 [26 Sept 1968] 47603/69 Heading H4F In a facsimile reproduction system, a triangular waveform 15 is added to the continuously varying video signal 14, and the resultant waveform is amplitude quantized to the middle of a range 10/11, 11/12, 12/13 according to the range its amplitude occurs in at samples taken at time quanta tx. The resultant quantized waveform comprises a series of pulses having durations equal to multiples of tx. By arranging that the frequency of the triangular waveform is not harmonically related to the sampling frequency 1/tx, the half-tone type dots, on a background of quantized intensity, as obtained in the reproduction, are randomly distributed and do not produce moire patterns, yet enable the reproduction of various intensities of tone.
Patent GB-1565849-A (GB)
Title: Process for the production of substituted anilines
IPC: C07C209/68
Filed: 1976-11-16
Abstract: Aniline derivatives of the formula <IMAGE> in which R denotes hydrogen, C1-C4-alkyl, or C1-C4-alkyl which is substituted by C1-C2-alkoxy and R1 denotes hydrogen or methyl, are prepared by reacting an enamine of the formula <IMAGE> in which X denotes a methylene group, oxygen or a direct bond, with an  alpha , beta -unsaturated aldehyde of the formula R1-CH=CH-CHO (III> at temperatures between -30 and 150 DEG C followed by heating of the reaction mixture obtained at temperatures between 100 and 400 DEG C in the presence of a hydrogen-transferring catalyst and in the presence of ammonia or an amine of the formula  R-NH2 (IV). The aniline derivatives of the above formula are valuable intermediates for the preparation of pesticides.
Patent GB-1021836-A (GB)
Title: Improvements in or relating to an electric portable apparatus for carrying out a treatment of the human body
IPC: A61C17/34
Filed: 1962-12-18
Abstract: 1,021,836. Power driven brushes. O. HUEBNER. Dec. 18, 1962 [April 28, 1962; Sept. 29, 1962], No. 47811/62. Heading A4K. [Also in Divisions A5 and B4] A multi-purpose power driven toilet instrument has a battery operated electric motor and interchangeable working heads which enable it to be a vibratory toothbrush or massage appliance or a rotary dry shaver or manicuring appliance. A motor shaft 11 may drive an unbalanced disc 9 causing the whole instrument to vibrate and the vibration is transmitted through a flattened portion 15 to tooth-brush 1. To lessen the vibration transmitted to the user's hand a cylindrical wire hand guard may surround the casing and be attached thereto at its base (Fig. 22, not shown). Motor 4 is driven by battery 7 or, in another form, (Fig. 4, not shown) by an accumulator provided with a re-charging unit. The tooth-brush may be detachably mounted on a leaf-spring (Figs. 5 and 6, not shown) on an alternative end cap 3. The end cap 3 may also be replaced by a cap having an axial socket for receiving vibratory massage tools (Figs. 7-12, not shown). Various tools may be fitted directly on a shaft 11 in place of disc 9. Thus, the end cap may be replaced by a cap formed as a dry shaver head having cutters driven by shaft 11 (Figs. 13-16, not shown). Rotary manicuring tools (Figs. 17-21, not shown) are also driven directly by shaft 11.
Patent GB-1476666-A (GB)
Title: Conveying apparatus
IPC: B65G37/00
Filed: 1975-10-28
Abstract: 1476666 Endless conveyers HERBERT MORRIS Ltd 28 Oct 1975 [6 Nov 1974] 47909/74 Heading B8A An endless conveyer for conveying plates A through a paint spraying unit comprises two parallel slat conveyers the slats 7 of which are inclined downwards towards their inner edges. The drive chains 5 engage brackets 12 on the underside of the slats which are recessed on the underside forming flanges 8 in which rollers 9 are mounted to support the slats on I beams 10, 11.
Patent GB-1132299-A (GB)
Title: Laser system
IPC: H01S3/23
Filed: 1967-10-20
Abstract: 1,132,299. Lasers. NIHON DENSHI K.K. 20 Oct., 1967 [26 Oct., 1966], No. 47943/67. Heading H1C. The output of a laser generator 1, Fig. 1, is split by a beam splitter 6-10 into a plurality of beams 11-15 each of which is amplified by a respective laser amplifier 16-20, the amplifier outputs being focused at a point 22 by a lens 21. The lasers may comprise ruby rods 2, 16a, 17a, 18a, 19a and 20a which are pumped by helical lamps 3, 16b, 17b, 18b, 19b and 20b, the laser generator 1 being Q-switched and having a resonator formed by a fixed partiallyreflecting mirror 5 and a rotating prism or mirror 4. The lamps are energized from a power supply 23 in synchronism with the rotating mirror 4, while the beam splitter comprises partially-transmitting mirrors 6-9 and a fullyreflective mirror 10. In a modification, Fig. 2, the duration of a focused output pulse at point 22 is reduced by equalizing the path lengths of the split beams. As shown, the beam splitter comprises partially transmitting mirrors 34, 41 and fully-reflective mirrors 36, 45, each of the split beams 35, 47, 48 passing through a variable optical delay unit 37, 44, 46 which are adjusted to equalize the path lengths. Included in the paths of the split beams are polarizers 38, 49, 50 and laser amplifiers 39, 51, 52, each amplifier comprising a ruby rod having its output face inclined at the Brewster angle. The amplifiers are cylindrically arranged and have individual lenses 40, 53, 54 for focusing the outputs at a common point 55. A further laser amplifier 33 is provided between the Q-switched laser generator 30 and the beam splitter. Gas lasers may be used as an alternative.
Patent GB-1378720-A (GB)
Title: Method for producing fire-retardant acrylic synthetic fibres
IPC: D06M101/16
Filed: 1972-10-18
Abstract: 1378720 Fire-retardant acrylic fibres JAPAN EXLAN CO Ltd 18 Oct 1972 48097/72 Heading B5B [Also in Division C3] Fire-retardant acrylic fibres derived from acrylonitrile homopolymers and copolymers have incorporated therein, as fire-retardant agent, a halo-phosphate of the formula wherein each of R 1 , R 2  and R 3  is a monovalent, halogen-substituted, aliphatic hydrocarbon radical having up to 8 carbon atoms, the halophosphate having an acid number of less than 5. The acrylic polymer preferably contains at least 70% by weight of acrylonitrile units; suitable comonomers include vinyl carboxylate esters, vinyl and vinylidene halides, (meth)allyl alcohol and esters thereof, (alk)acrylic acids and their esters, amides and nitriles, unsaturated sulphonic acids and their alkali metal salts, unsaturated hydrocarbons, and alkyl esters of unsaturated dicarboxylic acids. The halo-phosphates of the required acid number are obtained by preparing and storing them in the presence of the minimum possible amount of moisture or water. Incorporation of the fire-retardant agent into the fibres, preferably in an amount of 3-40% by weight of the fibres, is suitably effected by adding the halo-phosphate to a spinning solution of the acrylic polymer; in an alternative procedure the halophosphate is introduced by treating gelled acrylic fibres, obtained by a dry- or wet-spinning process, in a treatment bath containing the fire-retardant. The solvent used may be aqueous sodium or potassium thiocyanate or aqueous zinc or calcium chloride, or an organic solvent such as dimethyl formamide, dimethyl acetamide, ethylene carbonate or dimethyl sulphoxide. In examples acrylonitrile/ vinyl acetate and acrylonitrile/methyl acrylate copolymers are used as the acrylic polymer.
Patent GB-1528250-A (GB)
Title: Applying a desired sealing pressure between refractory plates of sliding gate valve
IPC: B22D37/00
Filed: 1976-11-19
Abstract: 1528250 Valves KUROSAKI REFRACTORIES CO Ltd and NIPPON STEEL CORP 19 Nov 1976 [26 Nov 1975] 48372/76 Heading F2V [Also in Division F4] The sealing pressure between the fixed refractory plate and the sliding refractory plate of a gate valve controlling a molten metal pouring nozzle is set up by urging a lower frame carrying spring means engaging the sliding plate towards an upper frame carrying the fixed plate by non-manual press means, and fastening the upper and lower frames together so as to maintain the sealing pressure. A spring holder 25 and springs 13 urge a sliding gate 6 and depending nozzle 7 against a stationary gate plate 5. The desired sealing pressure is set up by the use of a jack 12, and the spring holder 25 is then secured through arms 11 to arms 8 depending from the frame 4 of the fixed plate 5 so that the springs 13 maintain the desired pressure, Fig. 2. Hooks 14 pivoted to the bottom 28 of a ladle may engage rods 26 on the holder 25 to hold the frames together, Fig. 5. In another embodiment, a measured pressure is exerted by a jack 36 on one arm of a pivoted U-shape member 32 pressing spring holder 25 upwardly, Fig. 8, or jacks 36 supported from brackets 35 removably engaging lugs 34 on a ladle bottom exert measured pressures at either end of a stirrup 32 engaging a spring holder plate, Fig. 14. The stirrups 32 may be secured in position to give the desired sealing pressure, or the spring holder plate may be bolted at the desired level.
Patent GB-1024711-A (GB)
Title: Improvements in pulse generators
IPC: H03K3/30
Filed: 1962-12-21
Abstract: 1,024,711. Selective signalling. SPERRY RAND CORPORATION. Dec. 21, 1962 [Jan. 3, 1962], No. 48376/62. Heading G4H. [Also in Division H3]  In a blocking oscillator the resistive discharge path of a capacitor, in the feed-back loop of the oscillator, is varied in accordance with a combination of discrete voltage levels applied to the discharge path so that the discharge time of the capacitor and hence the pulse repetition frequency of the output of the oscillator is determined by the voltage levels. Transistor 22, forming the active element of blocking oscillator 18 is alternately rendered conducting and non-conducting under the control of transformer 28 and capacitor 32, the transistor conducting until the flux in transformer 28 collapses, due to the transistor saturating, when the emitter-base junction is reversed biased and the transistor is cut off. Capacitor 32, which is charged during the conductive period then discharges through input circuit 16 until the emitter-base junction of the transistor is again forward biased and the transistor recommences to conduct. Since the pulse repetition frequency of the output of the oscillator is dependent upon the discharge time of capacitor 32 determined by the resistance of the discharge path variation of the latter controls the frequency of the output. The resistance of the circuit 16 to the left of point 80 is determined by binary inputs " 1 ", " 0 " applied to terminals 10, 12 so that the pulse repetition frequency of the output of the oscillator takes a value determined by the particular combination of the binary inputs on terminals 10, 12. In order to keep the pulse length of the output constant circuit 20 is employed. A positive voltage induced in the secondary winding 34 of transformer 28 by the collector current of transistor 22 is differentiated by RC network 74, 62 and applied to the base of transistor 36 to cut off the latter so that clamping diode 46 is forward biased and output terminal 14 is maintained at voltage level V 9 . When capacitor 62 has discharged sufficiently to forward bias transistor 36 the latter again conducts and diode 46 is reverse biased so that the terminal 14 is at earth potential. Transistor 36 remains conducting until the next positive pulse is induced in winding 34.
Patent GB-488073-A (GB)
Abstract: 488,073. Photographic shutters. LEITZ GES., E. Oct. 11, 1937, No. 27572. Convention date, Nov. 3, 1936. [Class 98 (i)] In a photographic focal plane shutter having two blinds running down independently of each other, means are provided for so reducing the response of one blind to its driving spring that overlapping of the blinds is eliminated before the blinds reach the exposure area and the edges of the two blinds pass any point in the exposure area at the same speed. In one construction the winding arrangement 8 of the first blind is controlled by a coil spring brake 10 working between stops. Some of the energy of the spring of the first blind is thus used in effecting a slight unwinding directly the winding key is released and thus eliminating the overlap before the blinds reach the exposure area. When the shutter release 20 is depressed, the spindle 1 is disconnected from the winding device and the first blind is released. An arm 1a adjusted by a head 1b on the spindle 1 actuates a locking pawl that releases the second blind. In an alternative construction there is no loose motion in the winding mechanism but one of the blind is momentarily stopped after the exposure release by a spring operated pawl thus eliminating overlap before the exposure begins.
Patent GB-1427829-A (GB)
Title: Electrolytic cells and processes
IPC: C25B9/19
Filed: 1973-10-19
Abstract: 1427829 Electrolytic apparatus E I DU PONT DE NEMOURS & CO 19 Oct 1973 [19 Oct 1972] 48916/73 Heading C7B An aqueous solution containing Na and/or K ions with anions of mineral and/or organic acid (e.g. Cl, Br, S04, SO 3 , PO 4 , CH 3 COO ions) and/or OH ions, is electrolyzed in a stack of cell  elements (11), Fig. 4 (not shown), each having an anode 8' and a composite membrane comprising a polymeric film A facing the anode and a cathodic layer B of metal e.g. Hg permeable to Na and /or K ions in intimate contact with the film at its surface facing away from the anode. The film may be of a perfluorocarbon polymer having pendant sulphonic acid or sulphonate groups, e.g. prepared by copolymerizing a vinyl ether of formula FSO 2  (CF 2 ) OFC (CF 3 ) CF 2 OCF = CF 2  and F 2 C = CF 2  then converting the SO 2 F group to SO 3 H or sulphonate. As shown brine (Na Cl) is fed via 7 as anolyte 4 to overflow via 18, the products NaOH and H 2  formed pass out through outlet pipe 15 and water passes through feed pipe 3. The membrane is supported between outer and inner denuder shells 2, 14 and rings 19, 17. Graphite fabric tapes 11, as denuders contacting the Hg layer B and defining caustic spaces 10, are wrapped around current leads 12 e.g. of Ni or Fe wire welded to the anode plate 8, preferably of Ni or steel with a bonded Ti or Ta layer coated with Pt group metal or oxide thereof e.g. Ru O 2 . To prevent gas e.g. Cl 2  forming at the anode, either electrolysis is conducted at super-atmospheric pressure e.g. 100 to 1000 psia at 60 to 270 F, or the anode is covered with an electrolyte-permeable diaphragm or anion-permeable membrane (25) Fig. 3, (not shown); the latter is preferably used for Na 2 SO 4  electrolysis using a Pb-Ag alloy or magnetite anode. The Hg may be deposited, e.g. by electrolysis of mercury salt solution, within the polymeric film structure, preferably corrugated or dimpled and treated with swelling agent e.g. ethanol or glycol. The anode may be expanded or perforated or comprise a screen to provide liquid run-off space (Fig. 3), Depleted brine, from which dissolved or liquid chlorine is recovered, is regenerated with salt and fed back as anolyte. Instead of a Hg layer, other metals e.g Ag and/or Pb with or without Hg, may be used in the composite membrane.