baber/WOPTO huggingface dataset:
Patent GB-1460182-A (GB)
Title: Purification of aqueous phosphoric acid
IPC: B01D11/04
Filed: 1974-06-21
Abstract: 1460182 Phosphoric acid IMI (TAMI) INSTITUTE FOR RESEARCH & DEVELOPMENT 21 June 1974 [18 July 1973] 27697/74 Heading C1A Phosphoric acid is recovered from an aqueous starting solution by treatment with a mixed solvent containing 75-95% by weight of at least one ether R-O-R 1  where R and R 1  are the same or different aliphatic radicals having 2-5 carbon atoms and 5-25% by weight of at least one aliphatic alcohol having 3-8 carbon atoms, the temperature of the extraction being low enough for the formation of a clear homogeneous extract phase distinct from a residual aqueous phase, separating the extract phase from the aqueous phase, raising the temperature of the extract phase and adding some water so that the extract separates into a lower layer containing phosphoric acid and an upper layer containing solvent, and separating the lower layer from the upper layer. The extraction may be carried out at - 5 to 80 C. The aqueous starting solution may be technical grade phosphoric acid, that is aqueous phosphoric acid, usually manufactured by the decomposition of rock phosphate with sulphuric acid, having an H 3 PO 4  concentration of not less than 35% by weight.
Patent GB-1249165-A (GB)
Title: Improvements in or relating to spirit stoves
Inventor: KIN-CHAO SUN
IPC: F23D11/44
Filed: 1969-06-02
Abstract: 1,249,165. Spirit stoves. KIN HIP METAL & PLASTIC FACTORY Ltd. 7 May, 1970 [2 June, 1969], No. 27810/69. Heading F4T. A spirit stove comprises a circular tank 1 packed with fibre glass 9 for absorbing spirit to be burnt, a domed upper wall 3 connected to said tank and having a central circular area 24 and a shoulder portion 6 provided with three equishaped equispaced apertures 5 and three elongate apertures 7 respectively, and a shutter assembly 10 rotatably mounted on the upper wall and having three apertures 14 and three elongate apertures 16. The apertures 5, 14 and 7, 16 co-operate to form flame outlets and combustion air inlets respectively, rotating the shutter assembly 10 with the aid of a handle 12 causing the simultaneous stepless adjustment of the degree of opening of said apertures. The domed upper wall 3 has mounted thereon a short cylindrical chimney 17 for concentrating the flame and protecting it from lateral draughts.
Patent GB-1018077-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64D33/04
Filed: 1963-07-15
Abstract: 1,018,077. Aircraft tailplanes. MESSERSCHMITT A.G. July 15, 1963 [July 13, 1962], No. 27913/63. Heading B7G. A jet-propelled aircraft has tailplanes 2 fixed to a tail end portion 1 pivotable about an axis 5 for control in pitch. Jet pipes 3 pass through the portion 1, and these may be fixed relative to the fuselage (Figs. 1 and 2, not shown), or may pivot with the tail end portion (Figs. 3 and 4, not shown).
Patent GB-778896-A (GB)
Title: Gas turbine plants
IPC: F02C3/22
Filed: 1955-09-30
Abstract: 778,896. Gas turbine plant. SULZER FRERES, SOC. ANON. Sept. 30, 1955 [Sept. 30, 1954], No. 27953/55. Class 110 (3). A gas turbine plant, which is run at constant speed and is supplied with combustible gas which fluctuates between a maximum and minimum quantity and is supplied with an additional fuel when the amount of combustible gas is insufficient, has the working medium heated directly in a combustion chamber before the turbine by a part of the combustible gas which corresponds to the minimum amount and indirectly in a heat exchanger heated by the remainder of the combustible gas burnt in the turbine exhaust gases. Air from the compressor 1 is delivered into a combustion chamber 4 through a heat exchanger consisting of two sections 2, 3. The combustion gases are expanded in a turbine 5 and then divided. Part of these gases is forced by a fan 6 into the combustion chamber 7 which feeds the primary side of the section 3 of the heat exchanger. The remainder passes through a pipe 8 and mixes with the gases which have passed through the section 3. The mixture then passes through the section 2 to atmosphere. The turbine 5 drives the compressor 1, a combustible gas compressor 10 through gearing 9 and a generator 11. The combustible gas, of low calorific value, is supplied through a pipe 12. Part flows through the pipe 14 and compressor 10 into the combustion chamber 4 and part flows through the fan 16 into the combustion chamber 7. Since the compressor 10 is driven at constant speed it delivers a constant amount of combustible gas into the combustion chamber 4. When the amount of combustible gas is insufficient to maintain the turbine speed additional fuel may be introduced into the combustion chamber 4 through the pipe 17 and control valve 18 or into the combustion chamber 7 through a pipe 19 and control valve 20. The additional fuel may be fuel oil. The additional fuel may also be introduced into the supply of combustible gas before it divides.
Patent GB-1303530-A (GB)
IPC: C07D491/052
Filed: 1970-07-13
Abstract: 1303530 Tetrahydrobenzopyrano - pyrroles ARTHUR D LITTLE Inc 13 July 1970 [17 July 1969] 28147/72 Divided out of 1303529 Heading C2C Novel compounds of the Formula I in which R 2 is an alkyl group having 1 to 20 carbon atoms or a cycloalkylalkyl group in which the cycloalkyi moiety contains 3 to 8 carbon atoms and the alkyl moiety 1 to 6 carbon atoms, R 3 is a hydrogen atom, an alkanoyl group having 2 to 6 carbon atoms, a cycloalkylalkyl or a cycloalkylalkanoyl group in which the cycloalkyl moiety has 3 to 8 carbon atoms and the alkyl has 1 to 6 carbon atoms or the alkanoyl moiety has 2 to 6 carbon atoms, an alkenyl or alkynyl group having 3 to 7 carbon atoms, a haloalkenyl group having 3 to 7 carbon atoms, a phenylalkyl in which the alkyl has 1 to 4 carbon atoms, a phenylalkanoyl in which the alkanoyl has 2 to 4 carbon atoms or a phenylalkenyl or phenylalkynyl group in which the alkenyl or alkynyl group has 2 to 4 carbon atoms, and R 4 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkanoyl group having 2 to 6 carbon atoms, a carbamoyl group, an N-alkyl- or N,N-dialkylcarbamoyl group in which the alkyl group or groups each contain 1 to 6 carbon atoms or a phosphonyl group, any phenyl group present being optionally substituted by alkyl or alkoxy having 1 to 6 carbon atoms, nitro groups, halogen atoms or alkylmercapto groups in which the alkyl group has 1 to 6 carbon atoms may be prepared by condensing an alkyl pyrroli - done carboxylate in which R 5 is C 1-20 alkyl with a resorcinol in the presence of a condensation agent. The intermediate ethyl 1 -benzyl-4-pyrrolidone- 3-carboxylate may be formed by cyclization of diethyl 3 - benzyl - 3 - azoadipate using potassium t-butoxide. The compounds I are intermediates for the preparation of therapeutically active compounds of Specification 1,303,529.
Patent GB-627055-A (GB)
Title: A process for the manufacture of blood coagulating preparations
IPC: A61K38/43
Filed: 1946-09-21
Abstract: A water-soluble blood coagulating enzyme is prepared by treating a lipoid obtained from lungs, brains or soya beans with pancreatin or trypsin in the presence of a solvent, which is subsequently removed under reduced pressure.  Cow lungs and sheeps' brains are preferred sources of lung and brain lipoids. The examples are concerned with preparations formed from (a) an acetone precipitated fraction of trypsin and an etherial solution of sheeps' brains; (b) pancreation and an etherial solution of sheeps' brains; (c) crystallized trypsin and a benzene solution of soya bean lipoids.ALSO:A water soluble blood coagulating preparation is prepared by treating a lipoid obtained from lungs, brains or soya beans with pancreatin or trypsin in the presence of a solvent, which is subsequently removed under reduced pressure.  Cow lungs and sheeps' brains are preferred sources of lung and brain lipoids. The examples are concerned with preparations formed from (a) an acetone precipitated fraction of trypin and an etherial solution of sheeps' grains; (b) pancreatin and an etherial solution of sheeps' brains; (c) crystallized trypsin and a benzene solution of soya bean lipoids.  The sterile material is stored in an atmosphere of nitrogen.
Patent GB-369890-A (GB)
Title: Process for the disintegration of raw phosphates
IPC: C05B13/02
Filed: 1930-09-23
Abstract: The Specification as open to inspection under Sect. 91 (3) (a) comprises disintegrating raw phosphate by heating a mixture thereof with coke and silica or silicates, and treating the residue with the phosphoric acid obtained by oxidation of the expelled phosphorus.  It is stated, however, that the expelled phosphorus may be removed from the process, and the residue used directly as manure.  The quantity of coke and silica used may be only such as is required to expel sufficient phosphorus which, when oxidized, is necessary for the conversion of the remaining tricalcium phosphate to monocalcium phosphate.  Reverberatory, shaft or revolving furnaces may be used, and a counter-current of air may be employed to oxidize the phosphorus.  The product from the furnace is brought into contact with water, whereby the phosphoric acid thus produced and the remaining tricalcium phosphate react to form monocalcium phosphate, admixed with calcium silicate.
Patent GB-1535907-A (GB)
Title: Voltage regulator for a tapped transformer
IPC: H01F27/42
Filed: 1977-07-07
Abstract: 1535907 Phase shifters MASCHINENFABRIK REINHAUSEN Gebr SCHEUBECK GmbH & CO KG 7 July 1977 [9 July 1976] 28478/77 Addition to 1536022 Heading H2F In a voltage regulator, associated with a tapped transformer connected to a power transmission line, comprising the network of the parent Specification 1,536,022 replicating inphase and quadrature components of the voltage drop in the transmission line which appear between two respective output terminals 161, 121 and a reference line 71, the in-phase component is connected across a first potentiometer 30 and the quadrature component is connected across a second potentiometer 31, the sliders of these two potentiometers being connected to one input terminal 37 of a summation amplifier 38 whose ether input terminal 36 is connected to the reference line 71 so that the two replicated components appear in vectorially correct: summation at the output 39 of the amplifier as a compensating voltage U K . A feedback path 46 is provided between the output and one input 37 of the summation amplifier. A voltage transformer 41 may be provided whose secondary is connected to the one input 37 of the summation amplifier and whose primary is fed from the voltage to be regulated, Fig. 2, not shown.
Patent GB-629060-A (GB)
Title: Suspension hooks for gutters
IPC: E04D13/072
Filed: 1947-10-24
Abstract: 629,060. Gutter brackets. SCHWAGER, A. Oct. 24, 1947, No. 28494. [Class 52 (v)] A gutter hook made of flat metal bent on edge has a section b<SP>1</SP> twisted through 90 degrees relative to the hook portion a and then bent at an angle so that it rests on and is secured to the top of a rafter. Deformable metal tongues d, e, having bifurcated ends d<SP>1</SP>, e<SP>1</SP> secured to the hook a are bent over the edges of the gutter.
Patent GB-360131-A (GB)
Title: Improvements in or relating to slicing machines
IPC: B26D1/16
Filed: 1930-09-24
Abstract: 360,131. Slicing-machines. NAAMLOOZE VENNOOTSCHAP MAATSCHAPPIJ TOT VERVAARDIGING VAN SNIJMACHINES VOLGENS VAN BERKEL'S PATENT EN VAN ANDERE WERKTUIGEN, 33, Boezemsingel, Rotterdam, Holland. Sept. 24, 1930, No. 28541. Addition to 340,835. [Class 28 (ii).] In a slicing-machine having a knife on a swinging arm journalled in a bridge-like frame extending across the substance-holder, the under-table carrying the substance-holder is pivotally mounted so that it may be swung out of the operative position to facilitate the manipulation of the food. As shown in plan in Fig. 3, the swinging arm is journalled in the frame 2, 3 extending upwardly from the base 1. The under-table 4 is pivoted at 5 to the base and is provided with a foot which runs on an arcuate rib 8 on the part 1a of the base. A locking device 9 constructed as described in Specification 349,891, engages a projection 10 and maintains the under-table in its operative position. The feed-mechanism comprises a bell-crank lever 11 actuated by a link 12 connected with the swinging knife arm, the end 11a of the lever 11 being formed as a ball which is engaged in a socket in the rod 13. The rod 13 is pivoted by another ball-joint to a lever 14 pivoted at 15 to the under-table and connected by the rod 19 and ratchet mechanism with the feed screw 23. This arrangement permits the under-table to be displaced without disengaging the feed mechanism as in. the parent Specification. The ends of the rod 13 are concaved to receive the ball end 11a of the lever 11, and a screwed tube 16 is pinned to the rod. A concaved plug 13a is screwed against the ball 11a and is locked by a locking-screw 26. In modifications, the foot on the under-table 4 runs on the base part 1a, the rib 8 being dispensed with. The foot may itself be dispensed with, the pivot 5 being correspondingly strengthened. A locking means for retaining the table in its operative and in one or more displaced positions may be provided, and the feed-screw 23 may be arranged in the middle of the table or at the far side thereof, the rod 19 being modified or dispensed with.
Patent GB-1141870-A (GB)
Title: Improvements in and relating to thermo copying apparatus
IPC: B41L19/00
Filed: 1967-06-21
Abstract: 1,141,870. Thermo-copying apparatus. G. RITZERFELD. June 21, 1967 [June 30, 1966], No. 28613/67. Heading G2A. In a thermographic copying apparatus, sheets are inserted in a guide slot 32 and pass between a rotating glass cylinder 18, within which there is an infrared heater 31, and a resilient pressure roller 17 which is urged by springs 28, 29 into contact with the cylinder which is rotated by an adjustable friction drive. As the sheets are inserted, they engage a switch 33 which stops a motor driven blower 4 until each sheet has passed between the cylinder and the roller 17. The speed of the cylinder is varied by adjusting a wheel 40 so as to move a rack 42 axially. The rack 42 is either rigid with the drive motor 2 which is mounted on a support shaft 44 as shown, or else is an axial extension of the support shaft, Fig. 4 (not shown). This moves the motor 2 axially and hence a friction cone 6, rigidly mounted on a motor driven shaft 5 assumes a new adjusted position upon a friction disc 8 which is rigid with a worm shaft 7. The shaft 7 drives a roller 11 which in turn drives the cylinder 18. The motor 2 is pivotable about the support shaft 44 and is pivoted by a torsion spring 46 to maintain the cone 6 and disc 8 in contact, independently of the position or axial movement of the rack 42.
Patent GB-422724-A (GB)
Title: Improvements in loudspeakers
IPC: H04R19/04
Filed: 1933-10-16
Abstract: 422,724. Loud-speakers. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and OLIVER, D. A., c /o General Electric Co., Wembley, Middlesex. Oct. 16, 1933, No. 28636. [Class 40 (iv)] An electrostatic loud-speaker adapted to reproduce high frequencies comprises a diaphragm and a fixed plate electrode the area of which is much less than that of the diaphragm, the arrangement being such that the diaphragm when driven by the electrostatic forces of high frequency does not vibrate as a whole but has at least one nodal line or point on its surface other than the periphery by which it is supported. The Figure shows an aluminium diaphragm 1 stretched under slight tension by the clamping 2, and spaced by insulating pips 4 from fixed plates 3, 3<1> displaced from the centre of the diaphragm. Specifications 10399/13, 134,872, 189,982, 222,551, 251,349, 322,744, [all in Class 40 (iv)], and 387,546 are referred to.
Patent GB-170857-A (GB)
Title: Improvements in apparatus for measuring plane surfaces
IPC: G01B5/26
Filed: 1921-10-28
Abstract: 170,857. Krupp Akt.-Ges., F. Nov. 1, 1920, [Convention date]. Planimeters.-Relates to instruments having a measuring-wheel of which the angular path is a quadratic function of the distance from a fixed pole of a pin, attached to threads and intended to trace the outline of the surface, and consists in the attachment of the pin by two threads each wrapped upon one of two spring-controlled drums positively connected to the measuring wheel. The parts turn about the fixed pole so that the pin is always equidistant from the drums, the distance varying as required. A rotatable frame B mounted on a stationary bed-plate A carries an obliquely-mounted paraboloid C adapted to roll by means of a conical disc clover a bearing surface a<1> on the bed-plate, and bearing against a measuring-wheel D, movable vertically along an arm F, which is mounted to move longitudinally on a left-handed screw spindle G rotatably mounted in the frame B, but is prevented from rotating by the engagement of a projection f<1>. Fig. 2, in a groove b<2> in the frame. The threads P, from the tracing pin Q, are wound upon the drums M, having-right and left-handed grooves respectively, rigid upon a shaft K and controlled by a spring N tending to wind up the threads. When the pin Q is run around the surface to be measured, the frame B rotates, and the rolling of the paraboloid causes rotation of the measuring wheel. The turning of the drums on a change of distance of the pin from the fixed pole, i.e. the centre of the bed-plate A, is transmitted through spur wheels H, S to the screw spindle G, producing a horizontal shift of the arm F and the measuring-wheel, such that the movement is inwards when the pin approaches the axis. The threads are guided by rollers R carried in bearing members R<1>, which, as the thread is wound up, move automatically inwards on screw threads on a shaft T reared with the spurwheel J.
Patent GB-430650-A (GB)
Title: Braun tube
IPC: H01J29/74
Filed: 1933-10-19
Abstract: 430,650. Cathode-ray tubes. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, and SCHLESINGER, K., 39, Friedrichstrasse, Friedrichshagen, both in Berlin. Oct. 19, 1933, No. 28908. Convention date, Oct. 21, 1932. [Class 39 (i)] In a television arrangement including a Braun tube with two pairs of deflecting plates for causing the ray to scan the picture screen, image distortions due to marginal field effects between the pairs of plates in the absence of an interposed screen are avoided by spacing one pair from the other by a distance greater than or preferably equal to the spacing between the plates of the pair closer to the screen at their edges facing the other pair. The plates of at least the pair closer to the screen may be mutually inclined, dimensions being specified. Specification 398,804 is referred to. The Specification as open to inspection under Sect. 91 comprises also a tube in which the ray passes through a preliminary anode 5, Fig. 1 (Cancelled), a concentrating cylinder 6, an anode 7 and angle plates 20, 21 before reaching the pairs of scanning plates 9, 12. The plates 20, 21 give a constant deflection to the ray and the plates 9, 12 are biassed as shown so that " cross current " is always attracted to the fixed potential plates in the pairs 9, 12 and the " cross " and " cross current " defects are avoided. It is stated that the deflecting potentials in Braun tubes should be chosen to equal and not to exceed the value ¢E(D<2>/L<2>), where E, D and L are respectively the anode voltage, the diameter of the image screen and the length of the tube. This subject-matter does not appear in the Specification as accepted.
Patent GB-285561-A (GB)
Title: Improvements relating to filters for air or gases
IPC: B01D46/10
Filed: 1926-11-17
Abstract: 285,561. Handley, A. C. Nov. 17, 1926. Scrubbers and washers. - A body of coir fibre detachably mounted in an openwork holder which can be readily taken apart for insertion and removal of the fibre constitutes a filter unit, which may be moistened, and is combined with others to form a cellular filter. Fig. 1 shows apparatus in which the coir is contained between expanded metal plates D within open frames A, B bolted together. In a modification, one frame is flat and this frame and one of the openwork sheets are bolted together on a flange on the other frame. Perforated metal, wire netting or gauze, or coconut matting asbestos cloth &c. may replace the expanded metal. Fig. 6 shows a moistening apparatus comprising a frame G into which the filtering units, which may consist of a pair of expanded metal plates bolted together with the fibre between them, the edges being unenclosed, are fitted. Water supply and discharge pipes H, J are provided. Fig. 9 shows a cage filter formed by units detachably mounted between T and angle irons on a raised floor in a hut. Air enters the outer space, where dust is deposited, and escapes by chimneys leading from the interior of the filter cage.
Patent GB-236809-A (GB)
Title: Improvements in casement window frames
IPC: E05D3/06
Filed: 1924-12-03
Abstract: 236,809. Shaw, G. R. Dec. 3, 1924. Cupboard turns.-A fastening F, for a hinged section of a casement window frame has horizontal and vertical pivoting movement on the pivots F<1>, F<4>, and catches F<2>, F<5> engaging vertical and horizontal recesses on the fixed frame.
Patent GB-1007737-A (GB)
Title: Forced flow vapour generators
IPC: F22B35/12
Filed: 1962-07-27
Abstract: 1,007,737. Forced flow steam boilers. SULZER FRERES S.A. July 27, 1962 [July 27, 1961], No. 29027/62. Heading F4A. A forced flow vapour generator particularly for operation at supercritical pressure has a combustion chamber 32 lined with waterwall tubes 14 which extend vertically and in parallel relation between inlet and outlet headers 30, 18. Centrewall tubes 12 extending similarly between headers 24, 26 form a partition in the chamber 32 and are connected in series with and upstream of the tubes 14 in relation to the flow of working medium. At full load working medium is supplied by a feed pump 22 through lines 46, 200 to the centrewall and waterwall heating surfaces and flows directly from the header 18 to a superheater 48 and thence to a turbine 56. At part load a recirculation pump 10 draws some of the working medium from the header 18 and delivers it through lines 60, 78 to mixing vessels 20, 80 and thence by lines 200, 28 to the centrewall and waterwall section respectively. By this means only part of the recirculated working medium passes through the centrewall section which, having a smaller crosssectional flow area, requires less recirculation flow at low loads to protect the tubes than does the waterwall section. A throttling valve 82 may be used to determine the proportions of the recirculating flow. Recirculation through the centrewall section may cease before that through the waterwall section, the point at which recirculation ceases depending upon the characteristics of the pump and upon the pressure conditions in the vapour generator. In modifications the recirculation pump is disposed in series with the main through flow of working medium downstream of the waterwall section (Fig. 3, not shown); upstream of the centrewall section (Fig. 4, not shown), and between these two sections (Fig. 5, not shown). In a further modification (Fig. 6, not shown) the pump 10 is disposed between the centrewall and waterwall sections 12, 14 but the recirculation flow for the centrewall section only is taken from a point upstream of the waterwall section.
Patent GB-401874-A (GB)
Title: Improved burring motion for treating wool and other textile fibres
IPC: D01G9/00
Filed: 1932-10-17
Abstract: 401,874. Burring-motions for treating wool &c. THIBEAU, A., 191, Rue des Cinq- Voies, Tourcoing, Nord, France. Oct. 17, 1932, No. 29036. Convention date, July 8. [Class 120 (i).] In a Morel burring -motion for treating wool and other fibres two or more bristle rollers 3, 3<1> crushing rollers 4, 41 and burring rollers 5, 5<1> are provided, the first group 3, 4, 5 being driven at a relatively slow speed and each successive group at a suitable increasing speed, the heaviest impurities being extracted without being broken in the first group and the lighter impurities by the more rapid motion of the members of the second group.