baber/WOPTO huggingface dataset:
Patent GB-811010-A (GB)
Title: Improvements in resonant directional couplers
IPC: H01P1/163
Filed: 1956-07-17
Abstract: 811,010. Waveguide directional couplers; filters. MARIE, G. R. P. July 17, 1956 [July 27, 1955], No. 22028/56. Class 40 (8). A coupler for directionally coupling a rectangular-section waveguide to a circular-section waveguide utilizing the H 01  mode comprises a pair of annular resonant waveguide sections each directionally coupled to the rectangular and to the circular waveguides. The coupler is constructed from metal blocks 1, 2, 3, 4, 5 machined to provide parallel circular and rectangular guides 6, 7 and annular resonators 8, 9. The walls of rectangular guide 7 are formed from a metallic member 17 which is welded to the block 3. The blocks are held together by screws. Pairs of slots 13, 14 and 23, 24 directionally couple the circular and rectangular guides 6, 7 respectively to the lower and upper parallel limbs of the pair of annular resonators 8, 9. The slots may be replaced by lines of coupling holes. The resonators 8, 9 each have a length equal to an exact multiple of the wavelength of the guided energy and are displaced in relation to one another by a quarter wave. length in the axial direction of the waveguides 6, 7. This may be seen from Fig. 4 where the resonators 8 and 9 are indicated respectively by broken and full lines. By this means the phase conditions for the propagation of a H 01  wave in the circular guide 6 are fulfilled. It is stated in the Specification that the whole of the input energy having an intensity t 0  is found in an output wave of intensity t 1  if the frequency is near the resonant frequency of the cavities 8, 9. A continuous length of circular waveguide may be coupled at different points to a rectangular guide by pairs of annular cavities resonant at different frequencies. If these frequencies are closely spaced the whole arrangement forms a filter of wide band pass. Alternatively, the circular guide may be coupled to a number of different rectangular guides each of which is connected to a transmitter or a receiver utilizing the particular frequency at which the corresponding coupler is resonant. Fig. 7 shows a method whereby an annular resonant cavity 60 is tuned by means of a thin metal or dielectric plate 61 which penetrates the cavity to an adjustable depth. Specification 810,057 is referred to.
Patent GB-359926-A (GB)
Title: Improvements in the production of sound records on films
IPC: G11B19/28
Filed: 1930-07-22
Abstract: 359,926. Sound-recording apparatus. FIDELITY FILMS, Ltd. and CROWTHER, F. K., Worton Hall Studios, Isleworth, Middlesex. July 22, 1930, No. 22082. [Class 40 (ii).] A device for use in apparatus for photographicallyrecording sound on films, for indicating when the machine is running at the correct speed, comprises a glow discharge lamp rotated at a speed determined by the recording machine, the lamp being intermittently lighted at a predetermined standard frequency, so that when the rotary speed of the lamp bears a proper relationship to the standard frequency the light appears to be stationary, this condition indicating that the recording machine is running at the 'desired speed. In the arrangement shown, a gas discharge lamp b is mounted on a disc a, fixed on a spindle a<1> of the sound-recording apparatus or of a motor driven synchronously therewith. The lamp terminals are connected, through slip rings and brushes, in the circuit of a battery s, which circuit includes a stabilizing resistance r and a make-and-break contact device. The latter consists of a fixed contact d<3> co-operating with one prong el of a tuning-fork, the fork being automatically maintained in vibration by an electromagnet e<m>. This magnet is in circuit with a battery s<1> and a contact d<5> coacting with the prong e2. The frequency of the tuning-fork corresponds with the correct rotational speed of the spindle x<1>, so that the lamp appears to be standing still when the speed of the recording apparatus is correct. In a modification, Fig. 2 (not shown), the glow lamp is energized by the current induced by intermittently breaking, through the agency of the tuning-fork, a circuit through a choke coil or transformer. Instead of a tuning-fork, a clock escapement or an oscillating crystal device may be used.
Patent GB-152183-A (GB)
Title: Improvements in automobile signals
IPC: B60Q1/34
Filed: 1919-09-08
Abstract: 152,183. Nichols, J. E. Sept. 8, 1919. Road-traffic signals on vehicles; semaphore and pointer signals. - A turning and stopping signal for use on road vehicles comprises a hand or pointer 23 adapted to be electrically illuminated at night and rotably mounted on a bracket 10 clamped to the wind-screen. The pointer 23 is rotated by a hand-actuated shaft 18 and worm gearing 19, 20. The bracket 10 comprises a straight portion of square cross-section terminating in a right-angled screwed end 12 fitted with clamping brackets 13, by which the device is secured to the wind-screen frame. The square portion 10 carries adjustable brackets 16 supporting the shaft 18, and is formed with a number of holes 11 in any one of which a vertical pin 21 is secured by lock nuts. The pointer 23 is mounted on a sleeve 31 on the pin 21, and the worm-wheel 20 is fixed to the lower end of the sleeve. The pointer is detained in its set position by a cotter pin 26 mounted to slide in a slot in the vertical pin 21 and pressed by a spring 28 into engagement with the curved edges of a square or box washer 24 on the pointer. The pointer is transparent and provided with an electric lamp 29.
Patent GB-1277481-A (GB)
Title: Improvements in method and composition for grinding
IPC: B24B1/00
Filed: 1969-05-01
Abstract: 1277481 Abrading GENERAL ELECTRIC CO 1 May 1969 [15 May 1968] 22252/69 Heading B3D [Also in Divisions C3 C4 and C5] A solid dry lubricant for use during grinding, e.g. of ferrous metals, with a cubic crystal boron nitride abrasive tool comprises hexagonal boron nitride or a lubricant having the general lamellar crystal structure of cadmium iodide. The lubricant can be applied in the form of an easily abraded body which is held against the abrasive tool during grinding or can be incorporated in the tool, e.g. a grinding wheel. A suitable body contains 30-60 volume per cent of a bonding resin, e.g. epoxy, polyester, phenolic, acrylic or vinyl, at least 30% of the lubricant and an ingredient, e.g. sulphur, a silane, octadecanol or triethanolamine, to cause the lubricant to adhere during the grinding. Suitable resin-lubricant composites are (a) 32 volume per cent molybdenum disulphide or lead iodide, 22% sulphur, 4% gamma aminopropyltriethoxysilane and 42% epoxy resin and (b) 38À6 hexagonal boron nitride, 5À4% aminopropyltriethoxysilane and 56% epoxy resin; tungsten disulphide can also be used as the lubricant. A grinding wheel is pressed from 10 volume per cent borazon, 15% molybdenum disulphide, 20% of 1-10 micron silicon carbide and 55% phenolformaldehyde resin.
Patent GB-1505105-A (GB)
Title: Polycrystalline silicon resistive device for integrated circuits and method for making same
IPC: H01L27/12
Filed: 1975-05-22
Abstract: 1505105 Integrated circuits RCA CORPORATION 22 May 1975 [23 July 1974] 22307/75 Heading H1K An I.C. comprises a monocrystalline insulating substrate carrying a plurality of discrete semiconductor islands each containing a circuit element, one of the islands being of polycrystalline material and having heavily doped end portions and a less heavily doped intermediate portion of the same conductivity type. As described an I.C. comprising P and N channel M.I.S. transistors and a polycrystalline island is formed on a common substrate of 1102 oriented sapphire by first forming discrete islands of epitaxial N and P type silicon and polycrystalline silicon by successive deposition and pattern etching of these materials. After removal of oxide used in the final etching step and deposition overall first of an oxide (or nitride) layer and then of a polysilicon layer the layers are successively etched to define gate electrodes and underlying gate insulation centrally of each island. Heavily phosphorus doped silica 45 (Fig. 13) is next deposited overall from silane and confined to the epitaxial P-type island by photoresist etching and the entire surface then coated with heavily boron doped silica 47. Heating causes boron and phosphorus to diffuse to form source and drain regions as shown in each island. Finally the doped oxide layers are apertured over these regions and metal deposited to form source and drain electrodes and further electrodes over the polycrystalline silicon gates. Alternatively the oxide layers are removed, metal electrodes provided on the sources and drains, and further gate electrodes optionally provided on insulation on the polysilicon gates. Any of the components on the substrate may be utilized in a current feedback loop to convert a dynamic shift register into a static one (Fig. 16, not shown).
Patent GB-1484227-A (GB)
Title: Method and bath for the electrodeposition of nickel
IPC: C25D3/16
Filed: 1975-05-22
Abstract: 1484227 Nickel electro-plating OXY METAL INDUSTRIES CORP 22 May 1975 [16 Oct 1974]  22316/75 Heading C7B An aqueous acidic Ni plating bath contains 0À1-10 g/l m-sulphobenzoic acid or the Ni, Na or Mg salt thereof, 0À05-0À5 g/l of an alkyne diol e.g. butyne-1, 4-diol or 3-bexyne-2, 5-diol and 0À05-0À5 g/l butene alchohol, e.g. butene diol or a butene mono-ol. Ni salts to be used are sulphate, sulphanate, fluoborate, chloride or bromide. The bath may contain H 3 Bo 3  as buffer and HCHO or chloral hydrate as additional brightener.
Patent GB-460916-A (GB)
Title: Improvements in or relating to the production of dispersions of halogenobutadienes
IPC: C08J3/03
Filed: 1935-08-07
Abstract: Partially polymerized 2 - halogeno - 1 : 3-butadiene is dispersed in formamide or a liquid polyhydric alcohol such as glycerol or ethylene glycol which may contain not more than 25 per cent of water in the presence or absence of emulsifying agents such as sodium or potassium soaps, alkali metal salts of alkylnaphthalene sulphonic acids or of sulphuric acid esters of aliphatic alcohols and, if desired, the polymerization is completed in the dispersion.  The dispersion of the fully polymerized halogenobutadiene may be coagulated by acids or alcohol or the polymer may be separated by filtration through porous porcelain.  In examples partially polymerized, 2-chloro-1 : 3-butadiene is emulsified in (1) aqueous glycerol; (2) aqueous ethylene glycol; (3) glycerol; or (4) formamide in the presence of (1, 2, 3) sodium oleate; (4) sodium salts of sulphate esters and the dispersions allowed to polymerize.  Stabilizing agents such as ammonia or an aqueous dispersion of ethyl- or phenyl-b -naphthylamine may be added to the dispersions. Specification 387,363 is referred to.  Sodium salts of sulphate esters are prepared by treating a mixture of alcohols principally oleyl, with acetic anhydride, then with fuming sulphuric acid and then neutralizing with soda ash.ALSO:Partially polymerized 2-halogeno-1 : 3-butadiene is dispersed in formamide or a liquid polyhydric alcohol such as glycerol or ethylene glycol which may contain not more than 25 per cent of water in the presence or absence of dispersing agents such as sodium or potassium soaps or alkali metal salts of alkylnaphthalene sulphonic acid or of sulphuric acid esters of aliphatic alcohols. The polymerization may be completed in the dispersion.  Stabilizing agents such as ammonia or ethyl-or phenyl-b -naphthylamine may be added to the dispersion. Specification 387,363 is referred to.
Patent GB-1088922-A (GB)
Title: Improvements in or relating to gas chromatography detectors
IPC: G01N30/68
Filed: 1965-05-26
Abstract: 1,088,922. Gas chromatography, electrical. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. May 26, 1965 [May 29, 1964], No.22360/65. Heading G1N. Relates to the determination, in a gas chromatograph apparatus, of the relationship between the output signal from a detector and the quantity of the gas component passing through the detector. A known quantity of a gas component is supplied to a vessel 1 through which an inert gas flows, is intimately mixed therewith by a stirrer 21 and leaves the vessel having a composition in which the concentration of the component in the inert gas, decreases exponentially with time. The signal output, from a flame ionization detector 5, 6, across a resistor R7, is amplified and compared with an exponentially varying, reference signal from an R. C. circuit, applied across a resistor R16, and a resulting difference signal, which should be zero if the R. C. circuit is properly adjusted, is applied to a display unit 10. In the said R. C. circuit a capacitor 11 is charged by a voltage source 12 when a D. P. switch 12 is closed. A variable resistor 17 is adjusted so that the initial signal from C11 through R15 to R16, is equal and opposite to the initial signal from the detector appearing across R16. The switch 13 is then opened and R14 is adjusted so that the  difference signal appearing across R16 remains zero as a function of time. The flame ionization detector which has an electrode 6 and burner 5 connected to a 100 volt source 8, receives combustible gases from a passage 23 and the mixture of inert carrier gas with gas component from the vessel 1. Alternatively the detector may be a catharometer type or radio-active type.
Patent GB-265483-A (GB)
Title: Electromagnetic sound reproducer
IPC: H04R1/02
Filed: 1926-09-13
Abstract: 265,483. Brandes Laboratories, Inc., (Assignees of Dietrich, F., and Gerns, W. H.). March 5, 1926, [Convention date]. Loud-speakers; diaphragms. - An electromagnetic sound-reproducer comprises, in combination, a prism-shaped casing A, an electromagnetic driver 15 within the casing, a cone diaphragm 22 facing a grilled aperture in the front wall 1 of the casing and connected at its apex to the reciprocating member 17 of the driver 15. The casing A is made of sheet metal. The quadrangular front 1 and back 2 are in one piece. and are secured to a quadrangular base 10 and to triangular sides 4. 5 by grooved edges 6, 11 respectively. The driver 15 and a permanent magnet 16 therefor are mounted on an angular bracket 14, so that the reciprocating member 17 is normally disposed relatively to the front wall of the casing. The outer periphery of the diaphragm is secured to a resilient annular gasket 21 extending from a supporting ring 18, which is spaced away from the front wall of the casing, and is carried by a bracket 19.
Patent GB-373014-A (GB)
Title: Improvements in the manufacture of elastic textile products
IPC: D03D15/56
Filed: 1931-08-10
Abstract: 373,014. Elastic threads and fabrics. HAGEN AKT.-GES., G., Kalk, Cologne, Germany. Aug. 10, 1931, No. 22546. Convention date, Nov. 17, 1930. [Classes 120 (iii) and 142 (iv).] In the manufacture of elastic textile products prepared on looms, braiding, knitting, &c. machines, the rubber threads have wavy, undulating, &c. edges, e.g. as shown in Figs. 3 and 11.
Patent GB-788147-A (GB)
Title: Improvements in or relating to driving belts for use with v-grooved pulleys
IPC: F16G5/10
Filed: 1956-07-20
Abstract: 788,147. Driving-belts. LAVER, L. July 20, 1956, No. 22603/56. Class 80 (1). An endless driving belt of trapezoidal section comprises a body 10 of rubber or other elastomer in which is embedded a strip 12 of corrugated steel forming one or more complete turns around the belt. As shown, the body 10 is covered with several layers of rubber-impregnated canvas, and the strip 12 forms two complete turns. If only one turn is employed the ends of the strip are nested and overlap by the span of one corrugation. Two or more separate strips may be provided at different distances from the outer side of the belt.
Patent GB-875774-A (GB)
Title: A process for making cupric, mercuric and plumbous selenides
IPC: C01B19/00
Filed: 1957-10-01
Abstract: Cupric, mercuric or plumbous selenides are prepared by treating the selenites of the respective metals with hydrazine hydrate at a temperature of at least 50 DEG C.  A selenite of copper, mercury or lead of high purity is added slowly to 85% hydrazine hydrate, diluted with water if necessary to avoid too vigorous a reaction, in molar proportion of selenite:hydrazine hydrate of 1:4 to 1:14, especially 1:7, at 50 to 120 DEG C. preferably 75-100 DEG C.  For the production of cupric or plumbous selenide, preferable temperatures are 80-85 DEG C.  The reaction, which is exothermic and once started requires no external heating, is allowed to continue until the evolution of nitrogen ceases, e.g. after 1/4 -5 hours, the resultant solid product being isolated by filtration, washed free of mother liquor and dried. The reaction is preferably catalysed by the presence of an anion of a lower aliphatic carboxylic acid, introduced into the reaction mixture as the free acid or as a metal salt, the metal ion of which corresponds with the metal ion of the selenite employed.  Catalysts referred to are formic, acetic, propionic, butyric or benzoic acids, mercuric acetate, lead acetate, or lead benzoate.  For use as semi conductor materials the selenides thus prepared may contain "activators" of Cu or Ag, in quantities of 0.01% mole or less, added in the form of a copper or silver selenite to the copper, mercury or lead selenites before the reaction with hydrazine hydrate.
Patent GB-845415-A (GB)
Title: Improvements in furniture
Inventor: CAPPER GERALD ARTHUR
IPC: A47C19/02
Filed: 1956-07-23
Abstract: 845,415. Furniture covers. RHODES Ltd., W. July 23, 1957 [July 23, 1956], No. 22673/56. Drawings to Specification. Class 52(4) A cover for a headboard comprises two sheets of material seamed together along three sides and provided with means, such as tapes, sliding clasp fasteners or press studs, for removably securing the cover to the headboard.
Patent GB-884901-A (GB)
Title: Improved process for cracking dicyclopentadiene
IPC: C07C4/22
Filed: 1960-06-29
Abstract: Cyclopentadiene and/or methylcyclopentadiene is obtained by cracking the dimer in the vapour phase at 180 DEG C.-400 DEG C. in the presence of 0.1%-5% by weight of a heavy petroleum oil having a TAG open cup flash point above 250 DEG C.  Suitable oils are Bright stocks, and cycle oils from thermal or catalytic cracking.  The cracking is effected at 0-100 p.s.g. and 0.1-5 vol./vol./hr. using feed stocks containing more than 40% by weight of dimer and preferably more than 90%.
Patent GB-1241724-A (GB)
Title: Improvements in or relating to laser materials
IPC: H01S3/093
Filed: 1969-05-05
Abstract: 1,241,724. Laser glass; glass clad with glass. AMERICAN OPTICAL CORP. 5 May, 1969 [8 Aug., 1968], No. 22782/69. Heading C1M. [Also in Divisions C4 and H1] In a laser in which a glass host includes trivalent erbium laser ions and trivalent ytterbium sensitizer ions, and trivalent neodymium ions are used as sensitizer ions for the ytterbium as described in Specification 1,138,338, the neodymium ions are physically separated from the erbium ions to prevent quenching by incorporating them in a sensitizer glass which either surrounds or is located within the laser glass. Ytterbium oxide within the range 0À01-50 weight per cent may also be included in the sensitizer glass. As shown in Fig. 2 a glass laser rod 22 is clad with a sensitizer glass 24, while in Fig. 6 a plurality of sensitizer glass fibres 38 are embedded in the laser glass 36. A slab of laser glass 32, Fig. 5, may be used in a modification, the laser glass being surrounded by slabs of sensitizer glass 34. The laser glass contains 0À1-30 weight per cent of erbium oxide and 0À01-55 weight per cent of ytterbium oxide, the total not exceeding approximately 70 weight per cent. The glass host may be a silicate, phosphate, borate, borosilicate, arsenic trisulphide, selenide, telluride, fluoride, oxifluoride, alumino-silicate, germanate or organic glass. The same glass but without the laser ingredients may be used for the glass cladding, or a different glass may be used. Laser details are described (see Division H1).
Patent GB-444292-A (GB)
Title: Improvements in and relating to roller thrust-bearings
IPC: F16C33/54
Filed: 1935-08-13
Abstract: 444,292. Roller bearings. HOFFMANN MANUFACTURING CO., Ltd., and SMITH, C. H., Chelmsford. Aug. 13, 1935, No. 22787. [Class 12 (i)] A spacing cage for the rollers 3 of a thrust bearing consists of two spaced annular plates 1, 2, having radial slots for one or more rows of rollers. One or both plates have flange or bent portions which permit the plates to be directly connected to one another as by riveting, welding, or interfolding. One or both plates may be of channel shape. The bearing is particularly for use with variable pitch propellers.
Patent GB-295257-A (GB)
Title: Manufacture of amino-anthraquinone derivatives
IPC: C09B69/00
Filed: 1928-08-07
Abstract: 295,257. Soc. of Chemical Industry in Basle. Aug. 4, 1927. [Convention date]. Samples furnished. Aminoanthraquinone derivatives are obtained by the action of a bisulphite compound of an aldehyde containing more than one carbon atom.. or of the aldehyde along with a bisulphite, on primary aminoanthraquinones. The products may be used for printing wool and silk and in dyeing cellulose acetate. In examples 1-amino- 4-hydroxy anthraquinone is condensed with ammonium bisulphite and benzaldehyde, and 1 : 4 : 5: 8-tetraminoanthraquinone is condensed with sodium bisulphite and benzaldehyde. The use of furfural, acetaldehyde, and crotonaldehyde, and 1:4-. 1: 5-, and 1:8-diamino, 1- methylamino-4-amino-, 1-phenylamino-4-amino, 1-amino-4 (4<1>-aminophenyl) amino-, 1 : 5-diamino- 4-phenylamino-, 1 : 5-diamino-4 : 8-diphenyldiamino-, 1: 5-diamino-4: 8-dihydroxy-, and 5-- chlor-1: 4-diamino-anthraquinones is also specified. In an example of the use of the products in dyeing, acetate silk is dyed in an aqueous solution or suspension of such a dyestuff. Specification 285,096 is referred to. The Specification as open to inspection under- Sect. 91 (3) (a) comprises also the use ofsecondary aminoanthraquinones as parent materials. This subject-matter does not appear in the Specification as accepted.
Patent GB-1283804-A (GB)
Title: A process for the manufacture of amino acids and derivatives thereof
IPC: C07C229/42
Filed: 1970-05-12
Abstract: 1283804 3,4 - Dihydroxyphenylalanine derivatives F HOFFMANN-LA ROCHE & CO AG 12 May 1970 [14 May 1969] 22808/70 Heading C2C Compounds of Formula I in which R 1  represents hydrogen, hydroxy, lower alkyl, lower alkoxy, halogen, nitro or amino, n stands for 1, 2 or 3, R 2  represents hydrogen or lower alkyl, R 3  represents hydroxy or optionally mono- or di-lower alkyl-substituted amino, R 4  represents hydrogen, lower alkyl, lower alkanoyl or aroyl and R 5  represents hydrogen or lower alkyl, "lower" denoting groups containing up to 6 carbon atoms, and salts thereof, which process comprises subjecting a compound of the general Formula II wherein one of the substituents R 6  and R 7  is hydroxy and the other substituent is lower alkanoyl, aroyl or carboxy, or a salt of such a compound to an oxidative rearrangement and saponifying the carboxylic acid ester obtained and, in any desired sequence, hydrolysing the product obtained if desired, resolving a racemate obtained into its optically active forms, if desired, and converting a product obtained into a salt if desired. Pharmaceutical compositions in conventional forms and having hypotensive and anti- Parkison activity comprise a novel compound of Formula I above, i.e. one in which n is 1 and R 1  is halogen or C 1-6  alkyl provided that R 2  is alkyl when R 1  is in the 2-position and R 2  is alkyl when R 1  is alkyl, and a carrier or diluent. Reference has been directed by the Comptroller to Specification 1,023,204.
Patent GB-276509-A (GB)
Title: An improved combination tool for the use of electricians, wireless workers and others
IPC: B25F1/00
Filed: 1926-09-17
Abstract: 276,509. Kitching, C. H. Sept. 17, 1926. Files; combination tools.-The combination tool shown in the Figure is provided with file teeth along the edge e. In a modification the face of the tool may have file teeth.