baber/WOPTO huggingface dataset:
Patent GB-1398375-A (GB)
Title: 1,1,3,3-substituted hydroxyindanes
IPC: C07C323/20
Filed: 1974-01-31
Abstract: 1398375 Indanols BAYER AG 31 Jan 1974 [31 Jan 1973 16 April 1973] 04536/74 Heading C2C The invention comprises compounds of the formula  in which R<SP>1</SP> represents hydrogen, halogen or an optionally substituted alkyl, cycloalkyl, aralkyl or aryl group or the group in which X represents sulphur or the group R<SP>2</SP> and R<SP>3</SP> which may be identical or different represent hydrogen, halogen or an optionally substituted alkyl, cycloalkyl, aralkyl or aryl group or if R<SP>2</SP> and R<SP>3</SP> are in the ortho-position to each other they may form a condensed 5- membered carbocyclic ring together with the carbon atoms of the benzene ring to which they are attached; R<SP>4</SP>, R<SP>5</SP>, R<SP>6</SP>, R<SP>7</SP>, R<SP>9</SP> and R<SP>9</SP> may be identical or different and represent an optionally substituted alkyl, cycloalkyl, aralkyl or aryl group; or R<SP>4</SP> and R<SP>5</SP> and/or R<SP>6</SP> and R<SP>7</SP> and/or R<SP>8</SP> and R<SP>9</SP> may form a cycloaliphatic ring together with the carbon atom to which they are attached as substituents; or R<SP>6</SP> and/or R<SP>7</SP> may also represent hydrogen; and R<SP>10</SP> and R<SP>11</SP> may be identical or different and represent hydrogen or an optionally substituted alkyl group or R<SP>10</SP> and R<SP>11</SP> may form a cycloaliphatic ring together with the C atom which carries them as substituents. The compounds may be prepared by reacting a compound of the formula in which R<SP>12</SP> represents hydrogen, halogen or an optionally substituted alkyl, cycloalkyl, aralkyl or aryl group and y is 1 or 2 in the presence of an acid catalyst at 100-350‹ C. with an olefin containing the group or a compound which yields the olefin in situ. Compounds in which R<SP>1</SP> is a group of Formula VIII may be prepared by reacting a compound of the formula with sulphur dichloride or a compound of the formula R<SP>10</SP>-CO-R<SP>11</SP>.
Patent GB-754716-A (GB)
Title: Dry rectifiers, particularly selenium rectifiers
IPC: H01L29/00
Filed: 1954-02-16
Abstract: 754,716. Dry plate rectifiers. LICENTIA PATENT-VERWALTUNGS GES. Feb. 16, 1954 [Feb. 16, 1953], No. 4543/54. Class 37. In a dry rectifier comprising a carrier plate bearing a semi-conducting layer, e.g. Se, and a counter-electrode layer, and having a member of insulating material thicker than the counterelectrode which bears on the Se or carrier-plate in a central region which is cleared of counterelectrode or counter-electrode and Se and supports an inverted cup-shaped collector electrode, the counter-electrode is formed with a projection extending upwards from its inner rim along the outer surface of the member which is engaged by the rim of the collector ; electrode. In one embodiment (Fig. 1) the insulating ring 4, e.g. of material sold under the Registered Trade Mark " Pertinax " is stuck to the carrier or semi-conducting layer 1 and has a cylindrical outer surface, up which the counterelectrode 2 extends in the form of a truncated cone 5 against which resilient tongues 6<SP>1</SP> of a disc-shaped collector 6 (see Fig. 4) bear. Alternatively the outer surface of the ring is shaped like a truncated cone and the projection is a layer of uniform thickness on its surface. In this case the ring is positioned by a projecting rim 9 formed at its inner edge, which engages with the plate aperture. The ring may be of thermoplastic material, and the rim extended through the aperture and formed into a rivet head to fix plate and ring together (Fig. 3). In this Figure are shown a reinforcing plate 10 and metal distance-pieces 7, which may be used with any of the embodiments in stack formations. The projection may be sprayed on the ring and joined to the counter-electrode by spraying with metal after assembly or may be formed with the counter-electrode in a single spraying operation after assembly.
Patent GB-1129504-A (GB)
Title: Improvements in the production of sintered beryllium composites
IPC: C22C1/04
Filed: 1967-01-31
Abstract: 1,129,504. Sintering Be-Ag alloys. MALLORY METALLURGICAL PRODUCTS Ltd. Jan. 31, 1967 [Feb. 11, 1966], No.4590/67. Heading C7D. Alloys of Be with other metals such as Ag are produced by liquid phase sintering a powder mixture of Be and Ag with a fluxing agent selected from the halogenides of the alkaline or alkaline earth metals. The powder mixture preferably consists of 60-85% weight Be and the remainder silver and the fluxing agent, which ispreferablya 1:1 mixture of Lif and LiCl forms 0À5-2% weight of the metal content. The mixture is hydrostatically or hydraulically pressed and sintered in argon at 1050‹ -1250‹ C., to form a compact of 95-99% theoretical density. Alloys containing about 85% Be require a double pressing and sintering to attain 95% theoretical density. During sintering 5-35% by volume of a liquid phase is formed. To avoid the formation of the v or # phases the compact is held at 750‹ C. during cooling or the sintered compact is reheated to 750‹ C. and held for 24 hours. The alloy may be quenched from 1, 010‹ C. in order to retain the high temperature form.
Patent GB-525031-A (GB)
Title: Process for the production of a sweetening agent
IPC: C07D275/06
Filed: 1939-02-13
Abstract: 525,031. Soluble saccharin derivatives. KREIDE, I. Feb. 13, 1939, No. 4620. [Class 2 (iii)] Saccharin is mixed either in powder form or in solution with an aminocarboxylic acid to give a water-soluble addition compound with a sweet taste. The degree of sweetness can be adjusted by the amount of acid added, the excess acid, above that required to form the addition compound, acting as a diluent. The use of amino-acetic acid is described.
Patent GB-335872-A (GB)
Title: Method of and blank for forming resilient rail-securing clamps
IPC: B21K9/00
Filed: 1930-02-11
Abstract: 335,872. Vereinigte Stahlwerke Akt.- Ges. Feb. 14, 1929, [Convention date]. Railway permanent way.-Resilient clamps for securing rails to sleepers, Figs. 7 and 8, are formed from flat iron strip rolled in the direction of arrow C, Fig. 6. To produce the form of Fig. 7, the end is first upset and the bolt holes pierced, and the strip is then bent over into the required shape. The form of Fig. 8 is produced by bending over the end of the strip and then upsetting the strip to the shape shown in dotted lines, and proceeding as before.
Patent GB-643109-A (GB)
Title: Homogeneous flaked catalyst composition and its preparation
IPC: C11C3/12
Filed: 1948-02-17
Abstract: A catalytic composition for use in the hydrogenation of oils is in the form of readily flowing flat flakes and comprises a dispersion of a catalytically active, finely-divided metal in, as a protective medium, a solidified animal or vegetable oil. Specified catalytically active metals, employed in admixture, if desired, are nickel, iron, cobalt, copper, platinum, palladium, chromium, manganese, molybdenum, titanium and vanadium.  Specified oils, which may be the same as those to be hydrogenated and employed singly or in admixture, are cottonseed, coconut, corn, fish and whale, stearic acid and tallow. The composition is prepared by distributing a layer of the molten dispersion on the chilled surface of, for example, a rotating drum and removing the solidified layer in the form of flakes.  The Specification as open to inspection under Sect. 91 comprises also the use of the oxides, carbides, silicides or organic salts of the above-specified metals.  This subject-matter does not appear in the Specification as accepted.
Patent GB-383491-A (GB)
Title: Improvements in or relating to thermionic valves or electron discharge tubes
IPC: H01J1/22
Filed: 1932-02-17
Abstract: 383,491. Thermionic cathodes. NAAM. LOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Feb. 17, 1932, No. 4750. Convention date, May 27, 1931. [Class 39 (i).] To obtain a more rapid and efficient heating of an equipotential cathode, the cathode and the heating element are each made of an elongated cross section, the longer dimension of the cross section being in each case in the same direction. In the construction shown the heater strip 7 of hairpin shape and of rectangular or elliptical cross section is embedded in an insulating material 8, such as magnesia, within the cathode which comprises a nickel casing 9 of rectangular cross section coated with electron-emitting material 10 such as barium oxide or a mixture of alkaline earth oxides. The material 8 may be applied to the strip 7 by spraying and the casing 9 may be formed upon the material 8 by spraying on the metal.
Patent GB-521529-A (GB)
Title: Improvements in or relating to boxes
Filed: 1939-02-14
Abstract: 521,529. Containers for tin plate &c. McILWRAITH, J. W., POST, T. C., and ASSOCIATED BOX CORPORATION. Feb. 14, 1939, No. 4853. [Class 18] A moisture-proof shipping container particularly adapted for tin-plate consists of side and end rails 10, 11, Figs. 1 and 2, a bottom 12 and a top with the joints at 17 and 26 sealed by a semi-plastic moisture and shock-proof medium such as latex which is squeezed into the interior of the box at 21. The space A is also filled with the sealing medium. The corner joints may also be of mitre form, nailed through with corrugated plates, the ridge 15 then extending completely round the periphery. The rails may also be joined by dovetail or wedge formations, or by analogous square formations. A seal closure is illustrated in Fig. 11 the various dispositions of the grooves 717a and 717b may be adopted. Various arrangements of such grooves in the corner joints may also be adopted.
Patent GB-1480437-A (GB)
Title: Adaptive current regulator
IPC: H02M7/155
Filed: 1975-02-05
Abstract: 1480437 Automatic current control BBC BROWN BOVERI & CO Ltd 5 Feb 1975 [7 Feb 1974] 4940/75 Heading G3R A closed loop current regulator, using a converter which may deliver continuous or interrupted current, includes an amplifier with RC feedback. The changeover from continuous to interrupted current is detected, and causes the integral component of amplification to be increased while the proportional component is unchanged. As shown in Fig. 4, a variable gain amplifier 201 has actual and desired value inputs 206, 207 and an RC feedback path 204, 205. During continuous current operation, a field effect transistor 202 is held non-conductive. A zero current indicator circuit 216 detects interrupted current operation, and responds by turning on the transistor switch 202, thereby connecting the feedback capacitor 204 to earth through a resistor 213 and effectively reducing the capacitance in the feedback loop. A further circuit including a transistor 225 and capacitor 226 operates to maintain drive current to the transistor 202 between intervals in the converter current.
Patent GB-1031623-A (GB)
Title: Control apparatus for burner systems
IPC: F23N5/08
Filed: 1965-02-04
Abstract: 1,031,623. Control of A.C. motors. DANFOSS A./S. Feb. 4, 1965 [Feb. 5, 1964], No, 4975/65. Heading H2J. [Also in Division G1] Control apparatus for a burner system which includes a single-phase fuel-feed motor comprises photo-electric switch means responsive to the burner flame and arranged in the circuit of the start winding of the motor. Fig. 2 shows the A.C. supply UO connected through the contacts 9 of relay 11 to thermostat 5. When the thermostat closes the supply is connected to the " run " winding 3 of the fuel-feed motor 2, to the ignition system 7, 8 and to a circuit in series with the start winding 4 of the motor. This circuit has two parallel branches, one comprising resistor 12 and photo-resistor 6 and the other thermal relay 11 and a pair of solid-state switches 14, 15. The mid-point of the switches is connected to the junction point of the resistors. With no flame and the thermostat closed the potential across switch 15 causes it to conduct, this increases the potential across 14 which also conducts. This will occur in each half-cycle energizing the winding 4 and also the heater winding of relay 11. If the burner lights the photo-resistor 6 has a resistance approximately equal to that of resistor 12. It is arranged that the potential difference across the switches 14 and 15 is then inadequate for either to close, the relay and starter winding then pass negligible current. In the event of flame failure or the flame failing to appear relay 11 operates after a suitable delay and cuts off the supply from the ignition and both motor windings. Warning lamp 10 is lit by a circuit through the back contact.
Patent GB-1215490-A (GB)
Title: Girders
Inventor: HESS HANNS
IPC: E04B1/26
Filed: 1968-01-31
Abstract: 1,215,490. Girders. H. HESS. 31 Jan., 1968 [31 Jan., 1967], No. 5029/68. Headings E1K and E1W. The web of a straight or curved lattice girder is formed by members which may be frames 1, Fig. 1, or plates 1b, Fig. 4, connected together as a series by pivotal joints having axes normal to the plane of the web each joint being arranged on or near the neutral axis. The pivots may each be formed by a pin 13, secured by a bolt 20 to one member, rotatable within a cylindrical sleeve 10 secured by a bolt 19 to the adjacent member, the sleeve 10 being rotatable within an outer sleeve 28. In modifications the outer sleeve 28 may be dispensed with, Fig. 6 (not shown) and additionally the pin 13 may be replaced by a pair of opposed segmental members each 'bolted to one of the members. Fig. 8a (not shown). Furthermore the pins and sleeves may be replaced by corresponding components of spherical or part spherical form so that relative pivoting movement between adjacent member can take place about an axis disposed longitudinally of the girder. A bolted spigoted joint is described, Figs. 9 and 10 (not shown) between members and flanges 2, 3. The girder may be made of steel, wood or concrete. A three dimensional arrangement of the members may be provided.
Patent GB-639813-A (GB)
Title: Improvements in and relating to lubrication systems
IPC: F01M1/10
Filed: 1948-02-20
Abstract: 639,813. Force-feed lubrication. GREY, J. C. Feb. 20, 1948, No. 5051. [Class 12 (iii)] [Also in Group XXVII] A lubricating oil pump 12 is housed in a separate compartment 11 in a crank - case or sump having a chamber 10 from which the oil dripping thereinto is drawn into chamber 11 through a cylindrical filter located in an aperture in the wall 14 and extending right across the compartment 11. The pump 12 and filter are bolted to the outer wall of chamber 11 so as to be removable for cleaning, and separate draining plugs are provided for the chambers 10, 11. The oil is thus cleaned and cooled before reaching the pump.
Patent GB-1493967-A (GB)
Title: Method of and apparatus for measuring the width of an elongated element
IPC: G01B11/14
Filed: 1975-02-06
Abstract: 1493967 Sensing width photo-electrically ATLANTIC RESEARCH CORP 6 Feb 1975 [25 March 1974 6 Jan 1975] 5076/75 Heading G1A To measure the width of an elongated element it is scanned with a moving fringe pattern produced by interaction between two coherent beams having the same size and intensity but having a frequency difference in the RF range, and the radiation scattered by the element is examined. It is found that if the spacing of the fringes is adjusted until the AC component of the scattered radiation is a minimum, or until the A.C./D.C. ratio is a minimum, the spacing is related to the element width; in a noiseless situation the spacing then equals the width. In Fig. I the two beams are formed by an RF driven Bragg cell which splits an incoming laser beam into two parts having a frequency difference equal to the RF driving frequency. The beams are converged by lens 6 to form a continuously moving set of fringes 8 which scan across the element 10. The element, which may be a moving filament or a slit, scatters the radiation to a photo-multiplier (not shown) having circuitry which determines the A.C. and optionally the D.C. components. The laser radiation may be chopped to enable synchronous detection. The components are used to control the fringe spacing until the A.C. or A.C./D.C. minimum is detected. This change of spacing can be effected by changing the laser frequency, by changing the Bragg cell frequency, or by altering the angle of convergence of the two beams; the latter is preferred, and is done optically, e.g. by moving lens 6 or by a system of lenses and a rotatable mirror, Fig, 7 (not shown). The amount by which the fringe spacing has to be changed from a calibration value to produce the minimum signal determines the width of the element. In a system having no significant electric or optical noise, the width is equal to the fringe spacing required to produce a zero A.C. component. In general it is necessary to calibrate the measuring system with an element of known width if quantitative measurements are to be made. If optical noise is small (e.g. element transparency and surface are relatively uniform) the A.C. component may be used alone, though the use of the ratio is more accurate. Noise effects can be reduced if the length of the element within the fringe pattern is increased by expanding the beams, since this averages the noise. The fringe spacing may be scanned to and fro through the value which produces the minimum A.C. or A.C./D.C. ratio. The measurement may be used to control apparatus making the inspected filament, Figs. 2-6 (not shown). If the D.C. component is monitored, sudden changes in this can be used to indicate changes other than in size, e.g. in optical properties. A beam-splitter may be used to create a reference fringe pattern which can either be used with a standard element or can be inspected to check that the fringe generating apparatus is functioning properly, (Fig. 7).
Patent GB-819049-A (GB)
Title: Method for the preparation of fibre-forming systems
IPC: C08F291/00
Filed: 1957-02-14
Abstract: Graft copolymer fibre- or film-forming systems are made by dissolving in an aqueous polyacrylonitrile-solvent solution, e.g. a solution of zinc chloride or mixed salts, acrylonitrile alone or in admixture with another, a monoethylenically unsaturated monomer soluble therein and a polymeric material having a desired functional utility and which is soluble in the aqueous monomeric solution, and then polymerizing the monomeric material to form a spinnable or extrudable solution or dispersion of a graft copolymer-containing polymeric substance.  The monomeric material may be acrylonitrile, alone, or in admixture with allyl alcohol, vinyl acetate, methacrylamide, methacrylonitrile, methyl and ethyl acrylates, dimethylaminoethyl acrylate, sodium sulphoethylacrylate, acrylic, vinyl acetic and itaconic acids, vinyl and allyl sulphonic acids and their alkali metal salts, fumaronitrile, 2-vinyl pyridine and 2 - vinyl - 5 - ethyl pyridine.  The preformed polymer may be a homopolymer of vinyl pyrrolidone or a copolymer thereof with vinyl acetate or maleic anhydride, polymers of vinyl alcohol, vinyl caprolactam, vinylpiperidone, vinyl pyridine, vinyl acetate, vinyl benzene sulphonic acid and its salts, acrylamide, vinylbenzyl trimethylammonium chloride, vinyl methyl ether, N-acryloyl taurine and its salts, 2-aminoethyl methacrylate hydrochloride, 2-sulphoethyl acrylate, sulphopropyl acrylate, maleic anhydride and vinyl sulphonic acid and copolymers thereof with one another or with monomers such as acrylonitrile and polymers of ethylene oxide and ethylene glycol. The preformed polymer is selected to enhance desired properties in the fibres or films made from the products of the process, e.g. dyeability, and anti-static and hydrophilic properties.  The polymerization may be catalysed by the use of hydrogen peroxide.
Patent GB-1013581-A (GB)
Title: Improvements in or relating to the production of matrices suitable for the formationof metal mesh
Inventor: HALLE FREDERICK
IPC: C25D1/08
Filed: 1961-02-11
Abstract: <PICT:1013581/C6-C7/1> <PICT:1013581/C6-C7/2> A matrix, for use in forming metal mesh by electrodepositing metal such as copper on the matrix and subsequently stripping the metal from the matrix, is made by coating a ground, polished metal base e.g. of stainless steel with a layer 2 of glass-like material, e.g. SiO2, then coating the layer 2 with a resist 3, this being ruled and cut at 4, etching the composite shown in Fig. 1 by standard glass matrix techniques, and removing resist 3 to form the matrix shown in Fig. 3 comprising a mesh of conducting grooves 5 with islands of glass-like insulation material. The exposed bottom and sides of the base 1 are coated with a protective film to prevent electrodeposition thereon.  The matrix can be kept permanently immersed in the plating medium, and may be produced in the form of a continuous surface e.g. a drum partially immersed in the medium, the matrix being rotated to produce a continuous mesh The layer 2 may be formed by evaporating SiG upon the base and converting to SiO2 by heating in air.ALSO:<PICT:1013581/C1/1> <PICT:1013581/C1/2> A matrix, for use in forming metal mesh by electrodepositing metal such as copper on the matrix and subsequently stripping the metal from the matrix, is made by coating a ground, polished metal base, e.g. of stainless steel with a layer 2 of glass-like material, then coating the layer 2 with a resist 3, this being ruled and cut at 4, etching the composite shown in Fig. 1 by standard glass matrix techniques, and removing resist 3 to form the matrix shown in Fig. 3 comprising a mesh of conducting grooves 5 with islands of glass-like insulation material. The exposed bottom and sides of the base 1 are coated with a protective film to prevent electrodeposition thereon.  The layer 2 may be formed by settling glass powder on the base and heating to cause the powder to fuse forming an even layer of glass.
Patent GB-452154-A (GB)
Title: Improvements in multi-filament electric incandescent lamps
IPC: H01K9/06
Filed: 1935-02-18
Abstract: 452,154. Multiple filament electric lamps. GERMER, E., 42, Ulricistrasse, Wansee, Berlin. Feb. 18, 1935, No. 5211. Convention date, Feb. 19, 1934. [Class 39 (ii)] In a multiple-filament electric lamp provided with a primary filament and a reserve filament a bimetallic strip is provided as an automatic thermal control for interrupting the flow of current to the reserve filament until the primary filament is broken. The example shows a lamp with a primary filament 1 and reserve filament 2, the outer ends of the filaments being connected to wires 7, 8 respectively which are sealed into the pinch 11, the common point or junction of the filaments being connected to a common leading-in wire 9 passing through the pinch. The wires 7, 8 are looped or bent at one part to bring them closer together, and the bimetallic strip 3 is secured at one end to the loop in the wire 7, its other end being secured to a flexible leading-in wire 4 which may be of molybdenum, this latter end being normally in contact with a contact piece 6 fitted to the loop of the wire 8. When the lamp is switched on, both filaments light up until the bimetallic strip curves and breaks contact with the loop in the wire 8. To ensure a quick action the bimetallic strip is made thin and narrow, or it may be made in two spaced parallel portions. In a modification, a quick break and prevention of arcing are ensured by making the contacts of magnetic substances or providing an electromagnetic force which opposes the thermo-mechanical force until the latter has increased sufficiently to act with great rapidity. A heat shield, for example a mica plate, may be provided between the bimetallic strip and either or both filaments.
Patent GB-823627-A (GB)
Title: Shaft lining
IPC: E21D5/11
Filed: 1958-02-18
Abstract: 823,627. Wells. UNTERNEHMUNGEN DER EISEN-UND STAHLINDUSTRIE, A.G., FUR. Feb. 18, 1958 [Feb. 19, 1957], No. 5261/58. Class 85 The tubbings of a shaft lining carry anchor members 1 of web form which project radially into a surrounding concrete jacket. Each member is pierced by elongated holes 2 which extend in the radial directions.