baber/WOPTO huggingface dataset:
Patent GB-1082359-A (GB)
Title: Chemical system for use in lasers
IPC: H01S3/213
Filed: 1965-06-02
Abstract: An organic active laser medium is dissolved or suspended in a liquid which is circulated through an optical cavity, a cooling system and a reservoir.  The active medium absorbs radiant energy of a first frequency to become excited and then reacts chemically to form an excited reaction product which falls to a lower energy state emitting coherent radiation of a second frequency lower than the first frequency and then reacts chemically to regenerate the original medium in its non-excited state.  Examples of active medium are : (1) 8-cyano-2-naphthalene in a concentrated aqueous solution of pH 4 gives a green output; (2) methyl salicylate in methyl-cyclo-hexane gives a blue output; (3) pyrene in pentane or hexane gives a blue output.
Patent GB-616009-A (GB)
Title: Improvements in means for measuring the temperature of fluids in flow
IPC: G01K1/14
Filed: 1946-08-08
Abstract: 616,009. Thermometers. SEGRAVE, C. R. WILLIAMS, T. B. GLYNNE-, and BARKER, H. H. Aug. 8, 1946, No. 23487. [Class 97 (iii)] Means for measuring the temperature of a fluid flowing through a duct 2, comprises a temperature indicating device having a temperature sensitive element 3 housed in a passage 7, formed as a branch of the duct 2, and through which a proportion of the fluid in flow is diverted by a deflector 9.
Patent GB-1046727-A (GB)
Title: Window frames
IPC: E06B3/30
Filed: 1963-06-13
Abstract: 1,046,727. Composite window frames. BOULTON & PAUL Ltd. June 13, 1963 [June 13, 1962], No. 23562/63. Heading E1J. In a composite wood and metal window frame in which there is fastened on the main wooden frame (not shown) a metal section frame with a cover strip 14 provided with an inwardly projecting supporting flange 16 equipped on the inside of the frame with a sealing holder 22, 24, to carry a seal between the main frame and sash and on the outside with fastening flanges 28, 30; the bottom horizontal frame part carries on the supporting flange a U-shaped upwardly facing channel 46 connected by one flange 44 to the supporting flange 16 while the other flange 48 is at a distance from the free end of the flange 16 and the web of the channel 46, on its lower side has at least one fastening flange 54 and the flange 44 carries a strip 50 parallel to and at a distance from the coverstrip 14. At the mitred corners and the metal frame, the channel 46 and the strip 50 are cut off transversely to the section at a distance from the mitre and the channels are sealed off at the end by a profiled, preferably plastic L-shaped block. Likewise, the fastening flanges disposed on the supporting flange of the uprights of the metal frame are cut transversely of the section in the region of the mitred joint. Bores or slots (not shown) in the bottom of channel 26 and bores (not shown) in flange 44 drain water into the gap 51.'
Patent GB-1030172-A (GB)
Title: Improvements in and relating to hair-dressing devices and the treatment of human hair
IPC: A45D6/06
Filed: 1961-06-30
Abstract: 1,030,172. Hair waving appliances. B. BULLOCK. June 29, 1962 [June 30, 1961], No. 23667/61. Heading A4V. [Also in Division A5] Hair is curled or straightened by holding a tress of hair in desired configuration between the walls of a former by a flow of air passing between the walls and applying heat to the hair while it is in the desired configuration, to dry it. As shown a former, made by winding a sheet of non- corrosive material into a spiral, has enclosed ends 12, 14, and a tress of hair, sucked into the spiral through the mouth 18 by a suction pump connected by a pipe 20 to the centre of the spiral, is dried by heated air passed between the pipe 20 and casing 26 to enter the outermost spiral of the conduit through an annular aperture 28. The tress of hair is gripped by a spring- urged clamp which is positioned near the mouth 18 and is operated by a lever on the outside of the casing. Suction may continue during the passage of heated air through the conduit and, before or after the hair is dried, a treating liquid may be introduced through the aperture 28. An adaptor for use when only the ends of a tress is to be curled has superposed straight conduits for hair and for drying air and is interposed between he former and the scalp by engagement with the lips 34. Apertures in the adaptor allow the passage of hot air towards the scalp to dry the roots of the hair. In modifications the hair receiving conduit is straight, to straighten a tress of hair, or is corrugated.
Patent GB-517747-A (GB)
Title: Manufacture of aminohydrazines
IPC: C01B21/16
Filed: 1938-08-11
Abstract: 517,747. Aminohydrazlnes. SOC. OF CHEMICAL INDUSTRY IN BASLE. Aug. 11, 1938, No. 23712. 'Convention date, Aug. 14, 1937. Addition to 475,627. [Class 2. (iii)], In a modification of the process of the parent Specification, instead of reducing an aromatic hydrazinesulphonic acid containing at least one nitro group, the product of reaction of less than 2 mols. of a salt of sulphurous ,acid on 1 mol. of nitrodiazo compound is subjected to reduction. In the example 40 parts by weight of 4-nitro-4<1>-aminostilbene-2, 2<1> disulphonic acid are diazotized and treated with 30 parts of a 40 per cent. aqueous solution of sodium bisulphite, and the product reduced by means of iron in the presence of hydrochloric and acetic acids. The product 4-amino-4<1>-hydrazinostilbene-2, 21-disulphonic acid may be further condensed with a #-ketocarboxylic acid derivative to give a pyrazolone derivative.
Patent GB-457060-A (GB)
Title: Improvements relating to dust and soot collecting devices for attachment to chimneys and the like
IPC: F23J11/02
Filed: 1935-08-23
Abstract: 457,060. Soot &c. collectors for chimneys. HEGBOURNE, W. G., 1, Anerley Vale, Norwood, London. Aug. 23, 1935, No. 23731. [Class 25] A soot and dust collecting device for chimneys and the like comprises a separating chamber 2 which the gases enter in two streams, one through a tube 18 mounted in the outlet of the chimney 1 and the other through the annular passage between the tube and the chimney, a primary baffle 16 in the lower part of the chamber above the annular passage and a second baffle 6 at the top of the chamber directly above the opening of the tube, the bottom of the chamber being sloping and having an ori fice leading to a collecting container 15. The top anc sides of the chamber are provided with outlet ports 5 and 7 respectively. Within the chamber may be mounted an inner shell 8 having ports 10 in its side walls and a skirt extending below the level of the baffle 16 which comprises an annular conical member carried by the top of the tube 18. The chamber may be in two parts connected by a bayonet type joint 11. In a modification, the primary baffle is supported on a helical strip depending into the chimney.
Patent GB-636062-A (GB)
Title: Device for automatically stopping shuttle change looms in case of failure to eject the shuttle
IPC: D03D49/58
Filed: 1947-08-27
Abstract: 636,062. Automatic shuttle changing mechanism ; stop motion. DIEDERICHS, LES FILS DE G. Aug. 27, 1947, No. 23740. Convention date, May 12, 1943. [Classes 142 (i) and 142 (iii)] A loom in which insertion of a fresh shuttle is effected with the slay at rear centre is stopped if the empty shuttle does not fall into a receptacle. The shuttle inserter has a striker 4 which, under these circumstances, encounters a tappet 1 mounted on a horizontal lever 7, thereby moving the lever to disengage the starting handle from its retaining notch. When, on the other hand, the empty shuttle is ejected from the shuttle box and falls into the receptacle 12, it displaces a flap 13 which, through linkage 15, rocks the tappet 1 about a pivot 17 to bring it clear of the striker 4.
Patent GB-1339983-A (GB)
Title: Complementary symmetry transistor logic inverters
IPC: H03K19/00
Filed: 1971-04-19
Abstract: 1339983 Logic inverting circuit HAMILTON WATCH CO 19 April 1971 [22 June 1970] 23773/71 Heading H3T An inverter comprises two complementary FET transistors 12, 14 in series with a resistance 40 which limits the surge current through the two transistors during switching.
Patent GB-627987-A (GB)
Title: Improvements in or relating to process of making ethylene oxide, and the improved catalyst suitable for use in said process
IPC: C07D301/10
Filed: 1946-08-12
Abstract: Catalysts for oxidation of ethylene to ethylene oxide comprise silver supported on a carrier composed of silica and a -alumina, the latter comprising 2-15, preferably 5-10 per cent by weight of said carrier. The silica may be in any form other than the gel and is preferably a bonded type of silica particle of 4-8 mesh size.  A suitable material comprises 90 per cent or more a -quartz which may be associated with a -tridymite and traces of a -crystobalite, e.g. the bonded silica filter stone " Filtros." The alumina is one converted at 800-1000 DEG C. or even fusion temperatures, e.g. " Alundurch " (Registered Trade Mark).  It should be of a fineness of at least 100 or 150 mesh. Commercially pure silver oxide is used in an amount of, say, 10-70 per cent by weight of the carrier, preferably in such amount as is retained by the carrier, generally 45-55 per cent.  The ingredients are slurried in water, evaporated, dried at 50-100 DEG  C., and screened. Specification 587,584 is referred to.ALSO:Ethylene oxide is prepared by passing ethylene and oxygen-containing gas at 225-350 DEG C. over a silver catalyst supported on a carrier composed of silica and a -alumina, the latter comprising 2-15, preferably 5-10 per cent by weight of said carrier.  The silica may be in any form other than the gel and is preferably a bonded type of silica particle of 4-8 mesh size.  A suitable material comprises 90 per cent or more a -quartz which may be associated with a -tridymite and traces of a -cristobalite, e.g. the bonded silica filter stone "Filtros". The alumina is one converted at 800-1000 DEG  C. or even fusion temperatures, e.g. "Alundum" (Registered Trade Mark).  It should be of a fineness of at least 100 or 150 mesh.  Commercially pure silver oxide is used in an amount of, say, 10-70 per cent by weight of the carrier, preferably in such amount as is retained by the carrier, generally 45-55 per cent.  The ingredients are slurried in water, evaporated, dried at 50-100 DEG  C., and screened. A feed gas, containing 3-5 per cent or more ethylene with other gaseous hydrocarbons such as methane and ethane may be used.  A single pass operation is preferred, but multiple pass operation with separate catalyst chambers, absorption of ethylene oxide and addition of ethylene after each, is referred to.  A stainless steel tube of such proportions as to allow a space velocity of say 160-1000 vols./vol./hr. may be used.  Examples describe the treatment of gas mixtures containing about 3 or 5 per cent ethylene and 97 or 95 per cent air, and give comparative results using silica or alumina alone as the carrier.  Specification 587,584 is referred to.
Patent GB-710773-A (GB)
Title: Process for the manufacture in one stage of benzene-sulphonacylamides
IPC: C07C311/45
Filed: 1951-10-12
Abstract: Benzenesulphonacylamides are made in a single-stage reaction by treating a benzenesulphonamide with esters formed from p alkylcarboxylic and aralkylcarboxylic acids and alkanols or phenols, or from arylcarboxylic acids and phenols in the presence of alkali, the amount of which is one equivalent, calculated on the benzenesulphonamide, in the case of the phenyl esters and two to three equivalents in the case of the alkyl esters.  When 4-aminobenzenesulphonamide is acylated in this manner, no acylation of the 4-amino group takes place.  In examples: (1) N-acetyl-p-toluenesulphonamide is made by heating together a mixture comprising p-toluenesulphonamide, ethyl acetate, sodium (2 mols.) and methanol in a closed tube; (2) N1-aceturylsulphanilamide is prepared from sulphanilamide, ethyl aceturate, sodium (2 mols.) and methanol; (3) N1-acetylsulphanilamide is obtained similarly from sulphanilamide, methyl acetate, sodium (2 mols.) and methanol; (4) N1-phenylacetylsulphanilamide is obtained from sulphanilamide, ethyl phenylacetate, methanol and sodium (2 mols.); (5) N1-acetylsulphanilamide is made by heating together sodium sulphanilamide and phenyl acetate; (6) N1-benzoylsulphanilamide is made by heating sulphanilamide with phenyl benzoate; and (7) N1 - 3,4 - dimethylbenzoylsulphanilamide is made by heating sodium sulphanilamide with phenyl 3,4-dimethylbenzoate.  Specification 642,013 is referred to.
Patent GB-631913-A (GB)
Title: Improvements in or relating to cartons
IPC: B65D5/68
Filed: 1947-08-29
Abstract: 631,913. Boxes. BELSINGER, Inc. Aug. 29, 1947, No. 23917. Convention date, May 15, 1946. [Class 18] A cardboard box comprises two telescoping tubular portions having end closures of tray form, the flaps 14 forming the rims of the trays and being stapled to the tubular portions. The flaps 14 carry reinforcing corner extensions 15. The free edge of the outer portion abuts against the flaps 14 of the inner portion. The tubular portions are formed with longitudinal butt joints closed by tape 26 and the filled case may be sealed by tape. The extensions 15 may be of triangular or rectangular shape.
Patent GB-862365-A (GB)
Title: Improvements relating to pneumatic tyres
Inventor: FLETCHER HENRY RAYMOND
IPC: G21C1/24
Filed: 1956-08-03
Abstract: 862,365. Pneumatic tyres. DUNLOP RUBBER CO. Ltd. July 22, 1957 [Aug. 3, 1956], No. 23952/56. Class 144 (2). A pneumatic tyre has a tread reinforcement comprising a layer or layers of closely-adjacent overlapping substantially inextensible metal filaments, of length less than one-half the axial width of the tyre, adherently embedded in a rubber composition, and a layer or layers of inextensible parallel cords, all the layers extending around the whole tread circumference and the filament layers being disposed so that some of their filaments are differently orientated with respect to the cords of the cord layers. The filaments may be one to two inch lengths of brass-plated steel wire in either random or parallel deposition throughout the layer. A tyre having a carcass of parallel cord plies the cords of which extend at 90 degrees to the midcircumferential plane, may have its tread region reinforced by two cross-laid plies of parallel steel cords extending at 20 degrees to the said plane, in conjunction with a layer of parallel steel filaments disposed at 90 degrees to the circumferential direction. The filaments are capable of relative movement in the layer during shaping of the tyre, thereby permitting unrestricted choice of angular disposition of the filaments, whilst the vulcanized layer exhibits a high modulus of elasticity in the direction of the filaments of the layer relative to that in a direction normal thereto, or to that of an unreinforced rubber.
Patent GB-302616-A (GB)
Title: Improvements in the production of knifing compositions
IPC: C09D5/34
Filed: 1927-09-12
Abstract: 302,616. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges,). Sept. 12, 1927. Plastic compositions containing cellulose derivatives.-Knifing compositions comprise cellulose derivatives, organic solvent, and, as a filler, kieselguhr, powdered pumice or levigated chalk in a quantity exceeding three times the weight of the cellulose derivative, these fillers being either used alone or mixed with each other or with a further admixture of other inorganic fillers such as ochre, levigated earths, white lead, ground slate, lithopone, &c. The composition may also contain plasticizers and resins. In an example a composition comprises 20 parts of kieselguhr, 14 parts of talc, 7 parts of ground slate, 7 parts of lithopone, 6 parts of nitrocellulose, 5 parts of phthalic acid dibutyl ester, 5 parts of a resinous condensation product from cyclohexanone, 10 parts of butanol, 20 parts of butyl acetate and 6 parts of alcohol. Specifications 296,796 and 302,615 are referred to in the Provisional Specification.
Patent GB-1436168-A (GB)
Title: Scanner head for pattern following in machine tools
IPC: B23Q35/128
Filed: 1973-05-19
Abstract: 1436168 Template followers  D H G REDMAN 16 May 1974 [19 May 1973] 24002/73 Heading G3N A photo-electric line follower for controlling a gas torch or milling head or welding apparatus comprises a scanning head 10 Fig. 3 including a photo-cell unit 20 coaxially fixed to a shaft 32 of a servomotor 21, having a printed circuit armature, for rotation thereby. The motor shaft 32 is coupled via 1:1 ratio gears 23, 34 to the shaft of a sin/cos potentiometer or resolver 22. The scanning head 10 is mounted on a carriage 12a together with a cutting tool e.g. gas torch (16) Fig. 1 (not shown). The cutting machine is movable on rails along a Y axis direction while the carriage is movable on the machine transversely of the rails and machine along an X axis direction. A scanning signal from the photo-cell unit is fed via slip rings and brushes 30 and via an amplifier 25 Fig. 2 to control the servomotor 21, the photo-cell unit changing its attitude to the line or pattern as it rotates. Likewise the angular position of the potentiometer or resolver 22 shaft changes and the resulting sin/cos signals therefrom control the carriage drive motor 28 and machine 12 drive motor 29 respectively via respective amplifiers 26, 27. Within the servomotor 21 is a tachometer (not shown). Tacho-feedback to the amplifiers 25, 26, 27 inputs provides speed stability of the three motors. Since the scanning head is caused to follow the line or pattern the cutting torch on the same carriage will reproduce the line or pattern on a material to be worked:
Patent GB-657509-A (GB)
Title: Improvements in or relating to the preparation of substantially non-toxic proteinaceous materials
IPC: A23L11/30
Filed: 1948-09-13
Abstract: Castor bean pomace is detoxinated by mixing with an aqueous alkaline solution to solubilize as much as possible of the said pomace and subsequently heating to 80-95 DEG  C.  The pomace is preferably decorticated and derived from an oil extraction process.  The initial dispersion stage which takes about 30 minutes preferably gives a 1-3 per cent protein solution, calculating protein as 6 1/4 times the nitrogen content, and sufficient alkali is added to give a preferably pH of at least 9 and 11.  Sodium hydroxide is the preferred alkali, others specified being potassium hydroxide, ammonia, sodium or potassium carbonate and alkaline sulphites.  The suspension is preferably heated at 90 DEG  C. for 5 to about 25 mins. usually about 15 mins. to p  effect complete detoxination.  The dispersion is cooled to below 60 DEG  C. and acidified to pH 3.8-4.0 to give maximum precipitation of castor proteins which are filtered off. Acids specified are sulphuric, hydrochloric, sulphurous or acetic acid and acidic salts and SO2 gas may also be used.  Insoluble matter may be removed before heating or before or after acidifying.  In examples: (1) solids remaining from the extraction of decorticated castor beans containing 50 per cent solids and 50 per cent heptane are stirred with an aqueous caustic soda solution of pH 11.0 to give a fluid suspension.  Additional alkaline solution being added to yield a 2 per cent protein solution and the pH is then adjusted to 11.0, stirring is continued for 30 mins., and heptane removed by vacuum flash distillation, the dispersion thus obtained is heated at 90 DEG  C. for 15 mins., cooled to 50 DEG  C., acidified to pH 3.9 with 5 per cent sulphuric acid solution and the solids centrifuged off and in (2) which is otherwise very similar to (1) heptane is removed by drying the pomace in thin layers at about 70 DEG C.ALSO:Castor bean pomace, preferably decorticated and derived from an oil extraction process, is used for cattle feeding after detoxinating by mixing with an aqueous alkaline solution to solubilize as much as possible of the said pomace and subsequently heating to 80-95 DEG C.
Patent GB-1487365-A (GB)
Title: Card for displaying articles for sale
IPC: B65D73/00
Filed: 1975-01-03
Abstract: 1487365 Display cards ALLEN DAVIES & CO Ltd 3 Jan 1975 [30 May 1974] 24035/74 Heading A4T [Also in Division B8]  A planar display member 2 e.g. of cardboard is cut to provide article retaining elements 4 each defined by a series of cuts providing teeth 8 having points which intermesh or face each other. The teeth 8 retain portions of polythene bags (10), Fig. 3 (not shown) containing articles to be displayed, and may be defined by cuts intersecting at points 6, by sawtooth profile cuts, Figs. 4 and 5 (not shown), or linked opposed V-shaped cuts, Fig. 6 (not shown).
Patent GB-1470076-A (GB)
Title: Helical tension spring
IPC: B21F35/02
Filed: 1974-05-31
Abstract: 1470076 Making springs; bending spring ends J W G HUHNEN 31 May 1974 [1 June 1973] 24192/74 Headings B3A and B3E [Also in Division F2] A method of forming the end loops 51 of helical tensile springs 10 results in the free ends 53 being in pre-loaded contact with the adjacent end turns 50, the effect being to increase the fatigue life of the spring 10. Figs. 11 to 13 show the three operations of a first method and Figs. 14 to 16 (not shown) the three operations of a second method. Figs. 3 to 9 (not shown) illustrate a third method carried out in two stages and showing in Figs. 3 and 5 the jigs utilized. Fig. 10 (not shown) show an alternative form of the end loop.
Patent GB-792049-A (GB)
Title: Improvements in or relating to frames for bicycles
Inventor: REDMOND PETER IGNATIUS
IPC: B62K3/04
Filed: 1955-08-23
Abstract: 792,049. Cycle frames. PHILLIPS & CO., Ltd., J. A. Aug. 22, 1956 [Aug. 23, 1955], No 24201/55. Addition to 784,223. Classes 136(1) and 136(3) In a modification of the parent Specification the bicycle frame comprises a substantially triangular framework 1, 2, 4, 18 and a rear part consisting of twin tubes 6 extending in a unitary bow from the upper part of the seat pillar tube 4 to the bottom bracket 3, rear wheel mounting plates 12 being secured to the tubes 6 at their curved parts 8. Bridging tubes 10, 11 extend between and are secured to the twin tubes 6 to brace the frame and provide attachment parts for the mudguard and brakes. A carrier is formed by further tubes 16 bent into a V shape and secured at one end to the tubes 6 at their junctions with the mounting plates 12 or to the mounting plates themselves. The other ends of the tubes 16 are connected to the tubes 6 near the bridging tube 10. Bars 17 form luggage supporting members. To strengthen the junctions of the twin tubes 6 with the bottom bracket 3, a plate 15 is brazed or welded to the tubes and to the bottom bracket.