baber/WOPTO huggingface dataset:
Patent GB-1046572-A (GB)
Title: Tetracyclic and pentacyclic triterpene-guanyl hydrazones
IPC: C07C281/18
Filed: 1965-04-20
Abstract: The invention comprises guanylhydrazones of tetracyclic and pentacyclic triterpenes free from nitrogen-containing basic groups, the guanylhydrazone grouping being of the general formula <FORM:1046572/C2/1> (wherein A represents H or a C1- 6 alkyl radical and B represents H, a C1- 6 alkyl radical which may be joined to A, a nitro group or a basic radical of the general formula <FORM:1046572/C2/2> wherein R and R1 are identical or different C1- 6 alkyl radicals or form with N a heterocyclic ring, and n is 2, 3 or 4, with the proviso that A and B are not both H), and their non-toxic addition salts with inorganic and organic acids, and the preparation thereof by the processes of the examples, which may be summarized as reaction of the appropriate triterpenes, containing one or more oxo groups, with the appropriate aminoguanidines or their salts.  As alternatives to the latter there may be used thiosemicarbazides or S-alkyl-isothiosemicarbazides with subsequent reaction of the product with the appropriate amine, or hydrazine with subsequent reaction of the product with the appropriate cyanamide or S-alkyl-isothiourea.
Patent GB-1492639-A (GB)
Title: Pressure-operated domestic coffe percolator
IPC: A47J31/30
Filed: 1975-04-23
Abstract: 1492639 Coffee percolators TRANSELEKTRO MAGYAR VILLAMOSSAGI KULKERESKEDELMI VALLALAT 23 April 1975 16775/75 Heading A4E A domestic pressure-operated coffee-making apparatus comprises a rising tube 2 fitted at its upper end to a chamber 3 having an upper 8 and lower 7 perforated filter plate, and at its lower end connects with a mixing drum 4 communicating via an opening 5 to the bottom region of a boiler  chamber 1 and via a tube 6 to the top region of the boiler chamber so that in operation water passes through opening 5 and steam passes through tube 6, opening 5 not facing the opening of tube 2 into the mixing drum. Tube 6 may be adjustable in length by a telescopic arrangement and may be parallel to or at an acute angle to rising tube 2. Cap 10 holds chamber 3 and tube 2 in position, has an outlet pipe for coffee beverage and is held on to boiler chamber I by any suitable means.
Patent GB-259164-A (GB)
Title: A new or improved bearing for the rear axles of motor vehicles
IPC: B60B35/00
Filed: 1926-07-07
Abstract: 259,164. Jeavons & Co., Ltd., E. E., and Hill, A. H. July 7, 1926. Reservoirs in vehicle-axle bearings.-A bearing for vehicle rear axles comprises a. floating bush a in a hardened steel sleeve d fixed in the axle casing j. The sleeve d has an annular reservoir m supplied with lubricant from an oil cup l, lubricant being led to the bearing parts through radial holes in the bush a and sleeve d. The sledve may have two or more reservoirs m each having an oil cup, or the reservoirs may be interconnected by longitudinal grooves.
Patent GB-515629-A (GB)
Title: Improvements in and relating to weaving shuttles
IPC: D03J5/24
Filed: 1938-06-08
Abstract: 515,629. Loom shuttles. THWAITES, J. June 8, 1938, No. 16993. [Class 142 (iii)] In a hand-threading wood shuttle a hole is drilled in the direction 5 from a point 6 in the top face of the shuttle to a point 7 in the side face, and a single curved saw cut 13 is made leading in the top face from the point 6 to the hollow 21 in the shuttle, and in the side face from the point 7 to the shuttle eye passage 15 which leads direct to the hollow 21. An eye 16, split or open at the bottom and with part of it crossing the open end of the saw cut may be fitted, also a weft peg 20. When the weft is drawn into the saw cut 13 and pulled round to the point 6 it presents itself between the eye 16 and the point 7 and can be drawn out of the hole 6, 7 leaving the shuttle threaded.
Patent GB-433907-A (GB)
Title: Improvements in air pipes for collieries and other pipes of a like kind
IPC: E21F1/06
Filed: 1934-06-08
Abstract: 433,907. Pipe joints. COOKSEY, A. C., 35, Mount Pleasant, Bilston, Staffordshire. June 8, 1934, No. 17009. [Class 99 (i)] Colliery air pipes &c. are built in sections, each length having a plain end A which enters a short sleeve a<1> secured over the adjacent end A<1> of the next length and projecting a short distance therefrom. The bore of the sleeve is increased slightly where it projects from the section A<1>. Lugs B, B<1> riveted to the sections are provided for drawing the pipe ends together by bolts b<1>.
Patent GB-150145-A (GB)
Title: Improvements relating to cowls or tops for chimneys and flues
IPC: F23L17/02
Filed: 1919-07-08
Abstract: 150,145. Rogers, R. J. July 8, 1919. Chimney tops.-In cowls of the kind comprising a dome or cap h and a deflector c mounted over the uptake a, the deflector is spaced at a short distance from the shaft orifice so as to form a series of lateral slots or openings d. Air passing these slots after entering through holes l in the cap and impinging on the deflector induces a draught, whilst upward currents pass the slots and leave the cowl through the openings l in the cap. The top of the shaft is outwardly flared at g.
Patent GB-292107-A (GB)
Title: Improvements in high tension transformers
IPC: H01F27/02
Filed: 1928-06-12
Abstract: 292,107. Akt.-Ges. Brown, Boveri, et Cie. June 13, 1927, [Convention date]. Transformers. - Relates to high tension transformers of the kind in which the high tension winding is surrounded by an insulating vessel containing an insulating medium such as oil, and consists in making the insulating vessel of such a form as to ensure that the core is also surrounded by oil. In the core type transformer shown, the high tension windings a concentrically surrounding the low tension windings k are surrounded by oil-containing insulating cylinders c mid-way along which the high tension terminals are located. The ends of the cylinders c communicate with metal containers q, p also containing oil, and slotted to prevent eddy currents, the slots being filled in with insulating material. In an alternative arrargement in which only one limb of the core is wound, a single insulating cylinder surrounding the whole of the core and windings is employed.
Patent GB-1454650-A (GB)
Title: Current transmitter circuitry to provide an output varying as the square root of a measured variable condition
IPC: G08C13/00
Filed: 1974-04-18
Abstract: 1454650 Square root function generators ROSEMOUNT Inc 18 April 1974 [30 April 1973] 17051/74 Heading G4G  A circuit for deriving a current I T  between terminals 22, 23 proportional to the square root of the output of a transducer 10, these terminals also being the only connections for power supply to the circuit, comprises a current control circuit 90 controlling the value of I T  in dependence on a control signal applied to the base of transistor 47, a squaring circuit 40 generating a voltage proportional to the square of current I T , this voltage being compared in an amplifier 38 with a voltage representing the output of transducer 10, the output of amplifier 38 providing, through resistor 45, the control signal to transistor 47 of the current control circuit 90, thereby maintaining the desired square root relationship between input voltage and output current. For very low input levels the square root relationship is not easy to provide and can be approximated by a linear function achieved via amplifier 55 which when the input is low causes an F.E.T. 60 to conduct andapply a voltage linearly related to the input via lead 41 to amplifier 38. The squaring circuit 40 is centred on an amplifier 70 and F.E.T. switches 86 to 89 which are alternately turned on according to whether they are marked A or B by a flip-flop 91. When the "A" switches are on a voltage is applied to the inverting input of amplifier 70 which depends on the sum of the voltages at junctions 76, 79, this voltage being held by capacitor 68 when the "B" switches are on. When the "B" switches are closed the voltage applied to the non-inverting input of amplifier 70 is applied to one end of the resistor 85 of a l.e.d.-photo-resistor combination 80 and the other end of resistor 85 is connected to line 41. It is shown that this arrangement will provide a squaring function.
Patent GB-1127029-A (GB)
Title: Improved sintering method
Inventor: CORSON BOLTON L
IPC: C04B20/06
Filed: 1965-12-17
Abstract: 1,127,029. Sintering machines. G. & W. H. CORSON Inc. 17 Dec., 1965, No. 17181/68. Divided out of 1,127,027. Heading F4B. The subject matter of this Specification is identical with that described in Specification 1,127,027, but the claims are concerned with a method of heat treating a solid material containing fuel for combustion.
Patent GB-1037702-A (GB)
Title: Improvements in or relating to a supporting base for chair and the like
IPC: A47B91/00
Filed: 1964-04-24
Abstract: 1,037,702. Seats. DENTISTS SUPPLY CO. OF NEW YORK. April 24, 1964 [April 25, 1963], No. 17183/64. Heading A4J. [Also in Division B7] A mobile support for a chair seat 18 comprises a base 10 suspended upon a film of air so as to be readily movable. The base 10 is provided with an air inlet 140 communicating with an annular chamber 142 in which an air compressor 144 is mounted. The compressor is driven by an electric motor 148 which can be turned on and off by a switch 218. The chamber 142 communicates with an annular distribution chamber 158 formed by the peripheral flange 12 of the base and concentric annular walls 160, 162 connected by an annular plate 164. Air under pressure is discharged through spaced openings 166 in the plate 164 to inflate a sealing member 168 of porous flexible material attached to the periphery of the flange 12. Air is discharged through the pores of the sealing member 168, a thin film of air being formed between the member 168 and the floor. The annular plate 164 may extend beyond the periphery of the flange 12 and be downwardly bent to form a grinding flange 198 covered by a material having a low coefficient of friction with the floor surface. Instead of using compressor 144, air under pressure may be supplied from an external source and conducted to the chamber 158 through a control valve. The chair 18 is vertically not non-rotatably adjustable with respect to the base 10. The chair is mounted in a header 16 having dependent vertical guide rods 20 movable through guides 22 in the base. The header is moved vertically by a reversible electric motor 40 which rotates a sleeve 28 provided with a ball-nut 26 which rotates on a screw shaft 24 of the header 16. A double throw switch controls the motor 40. When the motor is switched off a brake and clutch mechanism operates to prevent further rotation of the shaft 28.
Patent GB-477286-A (GB)
Title: Improvements in or relating to the colouring of metal surfaces
IPC: C25D11/04
Filed: 1936-06-20
Abstract: 477,286. Shot-blast. WILSON, W. K., THOMAS, F. M., and DE HAVILLAND AIRCRAFT CO., Ltd. June 20, 1936, No. 17213. [Class 60] [Also in Groups XV and XXXVI] Aluminium or an aluminium alloy is roughened before colouring by blasting with 40 mesh round iron shot at 10 lbs. per sq. inch pressure. Specification 455,412, [Group XXXVI], is referred to..
Patent GB-126078-A (GB)
Title: An Improved Process for the Separation or Recovery of Picric Acid.
Inventor: GRAESSER NORMAN HUGO
IPC: C07C201/16
Filed: 1916-12-02
Abstract: 126,078. Graesser, N. H., and Mather, E. Dec. 2, 1916. Right to Patent relinquished. Picric acid is separated from liquors or solids containing it, such as the product of nitration, waste nitration liquor, picric acid washings, waste picric acid, &c. by adding benzene or other volatile organic solvent of picric acid, separating the picric acid solution so obtained, and evaporating the solvent therefrom. When treating the nitration product, this may be previously freed from excess of nitric acid and diluted to reduce the concentration of the sulphuric acid. If the liquors contain tarry or other matters soluble in benzene, the solution may be cooled to crystallize out benzene picrate, which is then decomposed by heat. Reference has been directed by the Comptroller to Specification 17525/15.
Patent GB-501438-A (GB)
Title: A device for the purpose of winding a skein of yarn, silk, or other material into a ball by mechanical means
IPC: B65H54/66
Filed: 1937-06-23
Abstract: 501,438. Winding yarns. UPHILL. li. June 23, 1937, No. 17435. [Class 120 (ii)] A device for winding a skein of yam &c. into a ball comprises a skein holder having four arms a .. d pivoted to the arms of a cross-piece e horizontally mounted on a pivot g at one end of a bar f which, at its other end, carries a frame h housing three gear wheels i, j, k. The wheel i is mounted on a cranked spindle M by which it is rotated and is geared to the wheel k mounted on the spindle carrying the winding cone l, the wheel k being also geared to a cranked-spindle n connected to a link y pivoted at one end of a thread guide lever o pivoted on a pin r in an extension of the frame h. The arms a . . d have curved slots 1, 2 to accommodate different lengths of skein and the yarn passes from the skein through a guide eye s to a slot x at the end of the thread guide lever o and the beginning end of the yarn is secured in a slot t in the end of the cone l which is connected to its spindle by pawls on a disc secured in a recess in the end of the cone and engaged by a cross pin in the spindle.
Patent GB-146214-A (GB)
Title: Process for the production of a solid non-hygroscopic iron salt
IPC: C01G49/00
Filed: 1920-06-26
Abstract: An iron salt having the formula FoSO4Cl suitable for tanning is obtained by acting on ferrous sulphate either dry, crystallized, or in solution, with chlorine.  When crystals of ferrous sulphate are treated, a solution is first formed which on drying in a water-bath produces a crystalline cake of the composition FeSO4Cl.6H2O.
Patent GB-252921-A (GB)
Title: Improvements in ink-raising devices for ink-bottles and the like
IPC: B43L25/00
Filed: 1925-07-07
Abstract: 252,921. Dunkerley, G. July 7, 1925. Inkstands; fountain-pen fillers. - An ink-raising device for bottles which may be employed to fill fountain pens, comprises a bottle F in the neck K of which fits a cylindrical, rubber &c. stopper A provided with an internal bore which communicates with a narrow flexible tube E dipping into the ink. Preferably a flexible sleeve C is inserted in the lower end of the stopper, the tube E communicating therewith by a pipe L passing through a plug M. By depressing the stopper, ink is forced into its interior or into a glass cap B placed thereon. In the case of selffilling pens, a rubber collar D is placed on the top of the stopper, the stopper is then depressed to raise the ink to the level shown, the pen is inserted and the filling device operated. To fill a pen provided with an air vent at its upper end, the pen is inserted in the stopper, the air vent opened and the stopper depressed until the ink has risen to the desired height in the pen. In a modified construction, the stopper may be provided with an exterior casing projecting to form an upper receptacle, a pliable outer covering being provided to slide in the bottle neck. In a second modification, the stopper may be rigid and a pliable member provided in the bottle neckthrough which the stopper may slide.
Patent GB-978757-A (GB)
Title: Method of and apparatus for multiple forming and combining of glass and resin filaments
IPC: D02G3/18
Filed: 1961-05-12
Abstract: 978, 757. Treating and winding filaments. REICHHOLD CHEMICALS Inc. May 12, 1961 [May 13, 1960], No. 17479/61. Heading D1F. In the production of a filamentary material, resin filaments are drawn from a liquid mass of unsaturated resin e.g. a polyester, acrylic, silicone, or hydrocarbon polymer, by means of an auxiliary rotating member and are combined i.e. uniformly distributed, with glass filaments. The glass and resin filaments may be simultaneously and separably drawn from a furnace and a reciprocating melting unit (containing a viscous mass of resin) on to a rotating drum whereon the fibres, in the form of strand or roving are collected and wound: a catalyst and a monomer or hardener are applied to the combined filaments prior to or at the time of winding. Two types of resin, one of which may be a hardener for the other, e.g. phenolic and epoxy, may be drawn into fibres from separate viscous masses, and/or separate melting units. The product may be formed into a single strand and wound and/or chopped into short lengths. As shown in Fig. 1, a paper cover or a layer of glass filaments on a drum 1 receives glass filaments 13 drawn (initially by hand) from orifices 12 in one or more gas-fired furnaces 7 and resin filaments 27 drawn from an angularly adjustable member 15 of an electrically heated melting unit mounted by wheels 24 for reciprocation on track-ways 25 parallel to the drum axis, the glass filaments serving as a drawing media for the resin filaments. In another apparatus, Fig. 5 (not shown) a previously formed strand of glass filament wound on a spool forms the source of supply thereof and is collected with a resin filament strand at a point in advance of the point at which the combined strand contacts the drum. Another apparatus, Fig.6 (not shown) includes a guide member carried by the reciprocating melting unit assembly and which continuously collects glass filaments passing therethrough into a strand before they are combined with the resin filaments. As shown in Fig. 7, resin filaments 91 propelled by compressed air jet 95 and drawn from a pivoted unit 90 are formed into roving 97 in a collector 92 and merged with a glass roving 100 (supplied from a spool 101) by a guide 96. A fixed or reciprocating member, as at 15, may lead to a laterally extending pipe with resin distributing orifices and of a length which may equal the width of the drum, Figs. 8 and 9 (not shown). The combined filaments may pass only partially around the drum en route to winding and/ or chopping rollers, Fig. 11 (not shown). U.S.A. Specifications 2,081,060, 2,609,320, 2,729,582 and 2,913,037 are referred to.
Patent GB-477294-A (GB)
Title: Improved process of producing free-cutting steel
IPC: C21C7/00
Filed: 1936-06-23
Abstract: Sulphurized free-cutting steel is produced by adding an intimate pre-formed mixture of manganese and sulphur to molten steel in the desired proportion according to the kind of steel to be produced. The manganese in the mixture may be replaced by iron, by another deoxidizing metal or by another metal which is to be alloyed with the steel.  Examples of such additions are cobalt, molybdenum, or ferro-alloys such as ferro-silicon, ferro-tantalum or ferro-vanadium. The manganese &c. in the form of dust or finely-ground is stirred in the required proportion into molten thinly-fluid sulphur, and the product cast into slabs or pieces which may be coated with an envelope protecting them from oxidation, such as a coating of water-glass, or made of a reducing substance such as paper.
Patent GB-595295-A (GB)
Title: Improvements in or relating to methods of and apparatus for producing a gas or mixture of gases suitable for use in the heat-treatment of metals
IPC: C21D1/76
Filed: 1947-07-03
Abstract: 595,295. Gaseous mixtures; maintaining special atmospheres in furnaces. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. July 3, 1947, No. 17542. Convention date, June 19, 1942. [Classes 51 (ii) and 55 (ii)] An atmosphere of carbon monoxide, nitrogen and hydrogen with possibly some methane and small amounts of water vapour and carbon dioxide and suitable for use in the heat treatment of metals is obtained by continuously reacting fuel gas, particularly town's gas, and oxygen-containing gas in the presence of heat and a catalyst, the relative proportions of the gases being varied in response to variations in pressure in the reaction chamber so that free carbon is alternately separated from and taken up by the reacting gases. Apparatus may comprise an electrically heated chamber 3 containing nickel shot or other catalyst 12 to which the supply gases mixed in a chamber 22 are fed through a pipe 9 having constant pressure pump equipment 24 and constant flow equipment 27, the product gas issuing through a pipe 10, cooler 32 and water separator 33. A bye-pass 40 under the control of a solenoid operated valve 41 admits additional air to the supply mixture when the pressure at the inlet to the reaction chamber, increasing owing to carbon deposition, reaches a preset value. The chamber is initially primed by utilising a rich supply mixture and the product gas may be vented through a pipe 47. In an example rich and lean supply mixtures of air and town's gas air in the ratios of .6 to 1 and 1 to 1 yielded product gases of the following constituents respectively; carbon monoxide 16.8 and 21.4 per cent., hydrogen 60.6 and 44.7 per cent., methane 2 and 1.8 per cent., the balance being nitrogen, and the reaction temperature being about 1,950‹F. A modified apparatus provides a reversal of flow at each variation in the supply mixture which is brought about by a device responsive to the differential pressure between the supply and outlet pipes.
Patent GB-661880-A (GB)
Title: Improvements in or relating to boring, facing and milling machines and the like machine tools
IPC: B23B39/02
Filed: 1948-06-30
Abstract: 661,880. Boring, facing, and milling machines. BERTHIEZ, C. W. June 30, 1948, No. 17616/48. Class 83 (iii). A boring, facing, and milling machine comprises a headstock with a rotatable spindle and adapted to be moved up and down on a vertical column, characterized in that the headstock is supported on a slide and is able to move on guideways parallel to the direction of the spindle, said slide being adapted to move along vertical guideways of the column and the spindle being splined in a rotatable sleeve which is adapted to receive a cutting tool such as, for example, a milling cutter. The vertically adjustable carriage 4 of the machine is provided with horizontal guideways 7, Fig. 3, along which the headstock 6 is adapted to slide. The spindle 12 is also axially adjustable within a sleeve 8 rotatably carried in bearings 9, 10, in the headstock. The sleeve is driven and rotates the spindle through a key 13 and groove 14. Axial feed of the spindle 12 is obtained through a block 15 to which it is rotatably secured and which carries a nut 17 engaging a screwed shaft 18. The latter is driven when a dog clutch 22, 23 is engaged by spiral gears 28, 29 from a cross-shaft 30. This shaft may be rotated by a hand wheel 31 or, when the hand knobs are pressed inwardly to engage a clutch (not shown), by an independent motor 39 driving through changespeed mechanism 40 a shaft 38 and worm 36, a worm wheel 37 on the shaft 30 engages the worm. When a toothed wheel 24 is moved to the left, Fig. 4, to disengage the " spindle feed " clutch 22, 23, it may be brought into engagement with a toothed wheel 45, loosely mounted on the spindle sleeve 8, and engaging a further toothed wheel 44 secured to a nut 42. This nut engages a screw 41 secured to the carriage 4 and rotation of the nut serves to feed the headstock. The latter may thus be fed either by hand or automatically by the common driving means used for the " spindle feed," when the toothed wheel 24 is in the left-hand position engaging the wheel 45. Alternative work-table and bed arrangements are described and the headstock may have a front face arranged to take attachments as described in Specification 661,879, which is referred to.
Patent GB-441269-A (GB)
Title: Improvements in or relating to the mounting of axial flow fans and the like
IPC: F04D29/64
Filed: 1934-06-14
Abstract: 441,269. Screw fans. MEY, R. DE, Wichelen, Wetteren, and HAVARD, P., 36c, Rue Jourdan, Brussels, both in Belgium. June 14, 1934, No. 17684. Drawings to Specification. [Class 110 (i)] The spokes of a spider-like member by which a motor is rigidly secured to a fan casing are formed integral with the ring encircling the motor. The spokes terminate in lugs which are bolted directly to the casing. In a modification the outer ends of the spokes terminate in a ring with machined surfaces which engaged machined surfaces on the casing. The spokes are either straight or curved and in the latter case may be duplicated. The ring A may be split diametrically.