baber/WOPTO huggingface dataset:
Patent GB-456468-A (GB)
Title: Improvements relating to air filters
IPC: F02M35/024
Filed: 1935-07-31
Abstract: 456,468. Filtering gases. ALEXANDER, G. H., 82, Coleshill Street, Birmingham. July 31, 1935, No. 21702. [Class 8 (ii)] An air or gas filter comprises a conical mat 1 of tangled wire or strip material on a conical perforated support 2. The filter is enclosed in a tubular section 4, and a series of such sections may be employed, the ends of the tubes having quick-release air tight joints, e.g. the ends are beaded and connected by joints 9. Leakage round the edges is prevented by a deflector 5 secured to the tube. Aqueous glycerine &c. may be sprayed into the filter, or the filter may be dipped in such material. The filter may be cleaned by a hose, by rinsing in water, or by using enough spray to wash down the dust from the first filter, the solution being carried through the series, recovered by baffles &c., led to settling tanks, and recirculated.
Patent GB-735265-A (GB)
Title: Improvements in or relating to purifying isobutylene
IPC: C07C7/00
Filed: 1953-08-06
Abstract: Isobutene is freed from methyl mercaptan by distilling at a pressure of 70-105, e.g. 80-85 p.s.i.g., to remove a mercaptan-isobutene azeotrope as overhead, isobutene being obtained as bottoms.  The isobutene feedstock is first acid-treated, neutralized, and water-washed.  A C4 cut is contacted with 60-65 per cent sulphuric acid at 70-100 DEG  C. to absorb isobutene, the solution being treated with steam at about 250 DEG  C. to recover isobutene and isobutyl alcohol which are scrubbed with alkali and then with water to separate the isobutene which is distilled at 80 p.s.i.g. to remove an azeotrope which boils at 53 DEG  C. and contains 78 mol. per cent isobutene, 22 mol. per cent methyl mercaptan which is recycled to the acid-treating zone.  Isobutene removed as bottoms is distilled to recover pure isobutene, suitable for polymerization to solid polymers, as overhead.  In an example, the distillation is effected in a packed column of 18 theoretical plates at 85 p.s.i.g. with a reflux ratio of 11 : 1.ALSO:Isobutene is freed from methyl mercaptan by distilling at a pressure of 70-105, e.g. 80-85 p.s.i.g., to remove a mercaptanisobutene azeotrope as overhead, isobutene being obtained as bottoms.  The isobutene feedstock is first acid-treated, neutralized, and water-washed.  Isobutene separated from a C4 cut may be distilled at 80 p.s.i.g. to remove an azeotrope which boils at 53 DEG  C. and contains 78 mol. per cent isobutene, 22 mol. per cent methyl mercaptan.  In an example, the distillation is effected in a packed column of 18 theoretical plates at 85 p.s.i.g. with a reflux ratio of 11 : 1.
Patent GB-517189-A (GB)
Title: Improvements in or relating to lubricating devices for rotary or other compressors
IPC: F04C29/02
Filed: 1938-07-22
Abstract: 517,189. Lubricating air-compressors. ARMSTRONG, J. J. V. (Bosch Ges., R.). July 22, 1938, No. 21761. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 31, 1939.] [Class 12 (iii)] Lubricant is fed to the work-chamber of a compressor during the suction stroke by means of valve 27 fitted to a detachable admission pipe 17 for the medium to be compressed. Oil from a source of pressure passes through a pipe 32 to a chamber 30 housing a spring 28 normally forcing the valve 27 to its seat. The valve spindle has a groove 26 and extends into the compressor cylinder 13. A slot 33 connects the groove 26 with the suction conduit 15. At the commencement of the suction stroke the rotary piston 11 opens the valve 27 to charge the groove 26 with oil. Thereafter the valve 27 closes and the oil in the groove 26 passes through the slot 33 and flows with the medium to be compressed into the working chamber.
Patent GB-1154742-A (GB)
Title: Pyrrylamino Ketones
Inventor: TEOTINO UBERTO
IPC: C07D207/33
Filed: 1966-05-17
Abstract: 1,154,742. Pyrrylamino ketones. WHITEFIN HOLDING S.A. 16 May, 1967 [17 May, 1966], No. 21777/66. Heading C2C. Novel compounds (includes salts with acids and alkyl halides) of the general formula wherein R is an alkyl, acyl, aryl or arylalkyl group which may be substituted by one or more halogen atoms, alkyl, hydroxy, alkoxy, -CF 3 , -NO 2 , -NH 2  or mono- or di-alkylamino radicals, R 3  is a hydrogen atom or an alkyl radical, R 1  is a hydrogen atom or an alkyl or cycloalkyl radical, and R 2  is a hydrogen atom or an alkyl or arylalkyl group, or R 1  and R 2  with the adjacent nitrogen atom represent a heterocyclic ring which may include a further hetero atom, are obtained by condensing an appropriate haloketone (i.e. a pyrrole substituted by -CO.CH.R 3 X at the 2-position and by R at the 1-position, X is halogen) with an amine, NHR 1 R 2 , and thereafter optionally hydrogenating a product wherein R 2  is a benzyl radical thereby replacing the benzyl radical by a hydrogen atom. Pharmaceutical preparations active on the central nervous system and suitable as analgesics, sedatives, analeptics and/or anti-convulsants contain as active ingredient the above novel compounds; administration may be orally, subcutaneously or intravenously.
Patent GB-585068-A (GB)
Title: Improvements in or relating to transportable planes with power-driven rotary cutters
IPC: B27C1/10
Filed: 1944-12-07
Abstract: 585,068. Wood cutting and working tools. BACKHOUSE, H., MENSFORTH, T., and FIRTH & J. BROWN, Ltd., T. Dec. 7, 1944, Nos. 21838/44 and 16647/45. [Classes 145 (i) and 145 (ii)] A transportable, handguided, power-driven tool for planing, sawing or routing wood is constructed with a driving- motor 12 arranged with its axis parallel to the direction of traverse of the tool 33 which is a rotary one driven by a chain-drive and a right angle worm drive arranged in a gear-box 43. The motor is secured by a strap 13 to a cradle 11 connected to the main body 10 of the tool, and the cutter projects through a slot and is mounted in bearings carried by slides 24 which are adjustably mounted in slots 25 in the body 10 and can be set to vary the depth of cut and the inclination of the cutting blades to the horizontal. The slides are held in adjusted position by screw-operated wedges with tongues guided by grooves, and the slides can be moved towards the driving-sprocket 45 so as to permit removal of the chain. The slots 25 are closed by solid bridge-pieces 18 at the front and at the top by a securing plate 28. The cutting- tool 33 is mounted between flanges 35, 36, Fig. 3, on a spindle 34, the flange 36 being detachable to facilitate removal of the slides and the bearings 38, 39 which are held in place by seal caps 42, 41. A handle 16 and handgrip 48 are provided and also an adjustable shoe 49 is fitted to the front of the tool. In a modification, Fig. 5, the driving-motor 12 and gear-box 43 are adjustable longitudinally to permit removal of the chain which is enclosed in a removable cover 71. The depth of cut is adjusted by pivotal movement of a sole-plate 63 which is provided with an aperture 65 for passage of the tool. The angle of the tool to the horizontal can be varied by mounting one of the bearings eccentrically and adjustably. The driving of the electric motor may be controlled by switches 78, 79 arranged in series and fitted on-the hand-grip 77 and handle 16. An air blast may be used to remove chips &c., and may be obtained from an air motor used to drive the tool.
Patent GB-715762-A (GB)
Title: Improvements in or relating to a process for the production of ferro-electric titanates of the alkaline earth metals
IPC: C01G23/00
Filed: 1951-09-18
Abstract: Tetragonal ferro electric alkaline earth metal titanates are produced by reacting at least one alkaline earth metal hydroxide, or a compound forming it under the conditions prevailing, with the stoichlometric quantity of titanium dioxide in an aqueous medium having an initial pH of at least 10, at a temperature of 200-400 DEG C and pressure of 20-500 ats. gauge, and separating the titanate so formed from the solution.  Crystallization or recrystallization may be effected to produce crystals of about 0.1 mm. maximum size, or under pressure and at a temperature of above 200 DEG C to produce larger crystals.  The operation may be effected in the autoclave in which the titanate is produced, with a temperature gradient imposed so that material in the hotter region dissolves, and a seed crystal (or crystals) is developed in the colder region.  The seed may comprise a crystal plate of special cut relative to the crystal axes; for example, it may be cut perpendicular to the axis of the quickest growth.  Metal compounds, e.g. PbO2, may be added to the reaction solution, or e.g. FeO MnO2, to the crystallization solution, to affect the crystal form.  The titanates may be used in capacitors, as pressed bodies with or without organic or inorganic cementing materials or as monocrystals in resonators, electromechanical converters and dielectric amplifiers.  Specification 530,584 is referred to.
Patent GB-1000139-A (GB)
Title: Improvements in and relating to the high voltage windings of transformers, chokes and the like
Inventor: AUTH WALTER
IPC: H01F27/28
Filed: 1962-06-06
Abstract: 1,000,139. Transformers and inductors. LICENTIA PATENT - VERWALTUNGS G.m.b.H. June 6, 1962, No. 21898/62. Heading H1T. A high voltage winding of a transformer or inductor has a group of more than two coaxial disc coils nearest the high voltage end of the winding which include two lengths of winding conductor (1-20 and 24-10, Fig. 1) each comprising alternate turns in one disc coil followed by alternate turns in a neighbouring disc coil, both lengths starting with the coil at the high voltage end, inter-connections between parts of each winding conductor in adjacent disc coils being between turns of similar diameter, e.g. 5 and 6, 10 and 11, 31 and 32 &c. Three other coil arrangements are described (Figs. 2-4, not shown) in some of which peripheral turns in a coil are separated from the remaining turns by insulating spacers (shown shaded). The high voltage lead is connected to a screening ring adjacent the 3nd coil.
Patent GB-1348766-A (GB)
Title: Colour-photographic material
IPC: G03C7/388
Filed: 1972-05-10
Abstract: 1348766 Multi-colour photographic material AGFA-GEVAERT AG 10 May 1972 [12 May 1971] 21956/72 Heading G2C A multi-colour photographic material comprising at least two colour coupler-containing silver halide emulsion layers has intermediate layer(s) comprising gelatine and 5-30% (based on the gelatine) of an acid group-containing polymer, e.g. carboxy methyl cellulose, cellulose sulphate or a polymer or copolymer of acrylic, maleic or styrene sulphonic acid, and being 1-1.5Á thick. Diffusion of colour developer oxidation products and curling are thereby prevented.
Patent GB-1458416-A (GB)
Title: Installation for parking two vehicles one above the other
IPC: E04H6/06
Filed: 1974-05-17
Abstract: 1458416 Two tier vehicle storage MPB-METALL-UND PARKSYSTEM-BAU GmbH 17 May 1974 [19 May 1973] 22000/74 Heading B8H Vehicle garage for storing two cars one above the other, comprises a lower vehicle storage area defined by surfaces 3, 4 downwardly inclined from an entrance 2 and an upper vehicle storage area defined by a platform 10 pivotally mounted at 9 in the rear third of the platform remote from the entrance. The platform is angled at a point 11 equivalent to its vehicle wheel base from the entrance to form an included angle of 175 degrees and is raised and lowered by hydraulic rams 12. A linkage 13, 14 maintains tho opposite sides of the platform in unison during the movement thereof.
Patent GB-1270699-A (GB)
Title: Drawer
IPC: A47B88/00
Filed: 1969-04-30
Abstract: 1,270,699. Drawers. CHRISTIAN HOLZAPFEL K. G. April 30, 1969 [Jan. 18, 1969], No.22072/69. Heading A4B. The clear height of a drawer is altered by a panel 2 integral with or attached to the front of a drawer 1 and having a channel 8 in which an extension 9 on a drawer part 3 may be engaged, parts 3 being interchangeable and stackable one above the other. The drawer parts 3 are U-shaped, Figs. 2-4 (not shown), the branches (4) of the U forming side panels, each of which has a hole (18) through which a securing bar (19) is passed, bar (19) being screwed into the securing bar of the drawer part 3 situated beneath or into the side rails on which the drawer is mounted or into the side of the drawer. The panel 2 and parts 3 are made of hollow plastics material reinforced by ribs.
Patent GB-1305063-A (GB)
Title: Improvements in method of forming optical image transmitting devices
Inventor: JACKSON JOHN ALAN
IPC: C03B37/14
Filed: 1970-05-07
Abstract: 1305063 Optical-fibre bundle RANK ORGANISATION Ltd 7 May 1971 [7 May 1970] 22138/70 Heading C1M A bundle of optical fibres is produced by forming a number of separate fibres into a flat tape, winding the tape into a spiral coil of several layers lying one on top of the other, bonding together all the fibres of the coil axially at one chosen position and cutting the coil at the position where the fibres are bonded together. The tape is formed by passing the fibres over rollers 5, spraying with an adhesive such as nitro-cellulose from means 19 and drying the adhesive with infra-red heaters 20. The tape is passed to a rotating drum 8 comprising a number of upstanding shoulders 9 separated by cylindrical portions 10 and coils of tape built up against each shoulder. An adhesive spray nozzle 13 is activated by a cam follower 16 engaging a cam 17 on the drum so that the coils are sprayed with adhesive at a position overlying a slot 12 in the drum. When all the coils have been built up the drum is placed in an oven to cure the adhesive and then a cutting blade is moved along the slot to slit the coils.
Patent GB-1325813-A (GB)
Title: Circuit arrangements for circuit complexes containing timing sensitive circuit element chains
IPC: H04Q11/04
Filed: 1971-04-19
Abstract: 1325813 Wiring arrangements SIEMENS AG 19 April 1971 [9 April 1970] 22186/71 Heading H1R In order to illiminate cross talk, there is provided a wiring arrangement in which wires carrying signals between time sensitive chain elements of a plurality of like chains are arranged in groups in physically isolated winding paths such that each group contains all the wires from each chain which interconnect one particular pair of elements in that chain.
Patent GB-159800-A (GB)
Title: Improvements in and relating to propellers for air-craft
IPC: B64C11/22
Filed: 1920-07-26
Abstract: 159,800. Haw, J. July 26, 1920. Screw propellers.-Relates to screw propellers the blades of which are made up of cross-pieces of wood or other rigid material threaded on steel rods fixed to the boss, and consists in securing the pieces in groups and also rendering readily removable the tip portions. Pairs of steel rods a, Figs. 1 and 2, which decrease in thickness from root to tip are fixed to the boss and carry crosspieces b which are glued and pegged together in groups. Steel pieces e attached to the rods between each group and end nuts g provide for security against centrifugal force. The rods have coned ends which are a driving fit in the boss. Binding-strips h, i, Fig. 7, along the leading edge and on the rear face at the following edge may be let into grooves in the blade as additional security. An additional strip at the centre of the front face may also be used. The root portion of the blade may be made of two wooden boards glued together and grooved for receiving the tie members. Alternatively, the boss may be made in two pieces integral with these root portions of the blade. The tip-pieces are secured to the outer cross-pieces by double-cone pegs. For varying the effective diameter, one or more outer cross pieces can be removed or added, the final fixture being effected by screwed caps. The blaeds mav be inclined to the propeller shaft.
Patent GB-519931-A (GB)
Title: Improvements in or relating to methods for heating metals
IPC: C21D1/76
Filed: 1938-07-27
Abstract: 519,931. Heat-treating metals. NESS, H. J. July 27, 1938, No. 22333. [Class 51 (ii)] Furnace atmospheres. In the heat treatment of both ferrous and non-ferrous metals, lithium or a lithium compound such as the carbonate is introduced into the furnace atmosphere in sufficient quantity to prevent oxidation of the metal. In gas or oil fired furnaces the lithiumcontaining material may be injected with the fuel, or it may be supplied separately and combustion should be so controlled that the furnace gases contain a small percentage of carbon monoxide. In the case of electric furnaces the material is injected with powdered carbon or carbon monoxide is supplied to the furnace. The lining of the furnace should be resistant to the action of lithium at the operating temperature and it may be preconditioned by introducing the lithium-containing material while the furnace is at a high temperature or by painting it with an aqueous solution of the material and then heating-up the furnace. Magnesium oxide is preferably used for the lining, but silica-alumina, brick chromium oxide, zirconium oxide and silicon carbide are also suitable. The lining and the fuel should both be free from sulphur. The furnace shown for heating steel blanks 8 is preferably a gas burner 6 and the products of combustion escape through the offtake 7. The lithium-containing material is supplied through the pipe 9 from 'the mixing apparatus described in Specification 519,973, and the quantity is controlled to produce a rich scarlet-coloured flame. The coating of lithium carbonate which forms on the metal can be removed by weak hydrochloric or acetic acid. The lithiated atmosphere facilitates the welding or brazing of metals such as iron or steel by an intermediate metal such as copper, silver or alloys.
Patent GB-614766-A (GB)
Title: Improvements in and relating to hand-saws
IPC: B23D51/01
Filed: 1946-07-26
Abstract: 614,766. Saws; handles. SLACK, SELLARS, & CO., Ltd., and SONDERMAN, G. J. July 26, 1946, No. 22343. [Classes 61 (i) and 61 (ii)] A hand saw comprises a tapering blade a which may have teeth on both edges arranged for sawing in opposite directions terminating in a short tang secured by a set-screw g in the flattened forked end of a tubular handle b which is slightly cranked in the plane of the blade and disposed at an angle thereto. The end of the handle is provided with a rubber hand grip and with internal helical indentations to receive a wooden extension handle.
Patent GB-1165512-A (GB)
Title: Pressure responsive control circuit for an electrolysis-type hydrogen generator.
IPC: G05D16/20
Filed: 1968-05-10
Abstract: 1,165,512. Electrolytically producing hydrogen. NATIONAL DISTILLERS & CHEMICAL CORP. May 10, 1968 [May 10, 1967], No. 22363/68. Heading C7B. [Also in Division G3] A gauge responsive to the pressure of hydrogen produced by an electrolysis generator has a photoelectric pick-off and associated transistor relay circuit which controls the electric supply to the generator to maintain the pressure constant. As shown, direct voltage derived through rectifiers 58 from a transformer 40 is applied between anode 14 and cathode 16 of an electrolysis cell 12 which, when supplied with water at 22, produces oxygen at the anode which is taken off at 26, and hydrogen at the cathode, which is collected by a funnel 20 and taken off at 28. Variations of hydrogen pressure with demand, e.g. by flame detection apparatus (not shown) for atmosphere contamination, are detected by a manometer 30 the liquid in which influences the amount of light transmitted from a lamp 34 to a photo-cell 36. The arrangement is such that when hydrogen pressure falls below a value determined by the positioning of the lamp-cell combination along manometer 30, a transistor operated relay 98 is actuated to short circuit a resistor 48 and increase the supply to transformer 40 so that the rate of hydrogen generation is increased. Addition of differential and integral components of control is referred to. Operation of a switch 52 permits manual control of the rate of hydrogen generation by adjustment of an auto-transformer 78. A relay 60 associated with an auxiliary cathode 18 detects fall of water level below this cathode and operates a warning lamp, 70. An air pump 74 is provided to draw samples of air into the flame detection apparatus.
Patent GB-1387065-A (GB)
Title: Cable
IPC: H01B7/38
Filed: 1972-05-12
Abstract: 1387065 Stripping tables TELEFONAKTIEBOLAGET L M ERICSSON 12 May 1972 22548/72 Heading HIA A cable comprising one or more conductors (which may be individually insulated), enclosed in a sheath 1, e.g. of a plastics material has a flexible elongate cutting member 3, e.g. of nylon or glass fibre possibly with a plastics cover beneath the sheath and markings, e.g. a pair of ribs (55a) on the outside of the sheath indicating the position of member 3. The member 3 can be pulled out of the sheath to cut it open or a cutter can be used to make an initial slit in the sheath against the member 3. A groove 4a can be formed in the inside of the sheath 1 to receive member 3: a further groove may be provided on the outside of the sheath to indicate the position of the cutting member and to thin the sheath to facilitate the slitting.
Patent GB-1326286-A (GB)
Title: Transistors
IPC: H01L27/00
Filed: 1971-04-19
Abstract: 1326286 Lateral transistors INTERNATIONAL BUSINESS MACHINES CORP 19 April 1971 [3 March 1970] 22577/71 Heading H1K The invention includes two types of embodiment in both of which the emitter-base and collector-base junctions of lateral transistors are formed in a vapour grown semi-conductor layer and occupy planes or surfaces substantially perpendicular to a substrate containing a diffused heavily doped base-connector region. In one type the substrate carries a grown semiconductor layer of which most is monocrystalline and epitaxial with the substrate but of which part is in the form of one or more polycrystalline columns extending through the layer. The junctions are formed by a successive diffusion of opposite conductivity type into a polycrystalline column and by movement of the diffusion fronts into the surrounding monocrystalline material. In the other type successive diffusions are made through the same masking aperture into a monocrystalline epitaxial layer and are driven so very deep that the diffusion fronts will be within the base-connector region formed in the substrate. In each type by using suitable dopants the two critical diffusion stages may be effected simultaneously. In integrated circuits for isolation purposes the substrate itself may comprise an epitaxial layer of opposite conductivity type to its bulk portion.
Patent GB-1007410-A (GB)
Title: Improvements in or relating to the conversion of high-phosphorus pig irons to steel
IPC: C21C5/34
Filed: 1964-06-01
Abstract: In a process of refining high-phosphorus iron in a bottom blown converter about 50-60% of the total lime required is first charged to the converter, which already contains the slag from the previous heat.  Molten iron is then charged and is blown with air (with or without a small amount of oxygen enrichment) until the phosphorus content is about 0.1%.  The slag is then removed, the remainder of the lime added, so that a viscous second slag is formed, and the bath blown for a short period with a blast containing at least 40% of oxygen. The metal is then teemed leaving the slag in the converter. For the production of low-nitrogen steel the second-stage blast may consist of a carbon dioxide/oxygen mixture.
Patent GB-533035-A (GB)
Title: Improvements in or relating to the generation of electric waves
IPC: H03K5/08
Filed: 1939-08-04
Abstract: 533,035. Valve generating circuits ; changing wave form. STANDARD TELEPHONES & CABLES, Ltd., BARNARD, R. M., and KRAM, W. Aug. 4, 1939, No. 22670. [Class 40 (v)] [Also in Group XXXV] Sinusoidal waves are converted into waves of approximately square formation by (1) passing them through a half-wave rectifier, e.g. a diode V1 the output of which is connected to the input of a saturated pentode V2, or (2) passing them through two saturated pentodes in cascade Fig. 3 (not shown). To ensure complete saturation of the pentode, the anode voltage is less than that of the screen grid.