baber/WOPTO huggingface dataset:
Patent GB-1072428-A (GB)
Title: Cassette for cinematographic roll film provided with a sound-track and apparatus for use therewith
IPC: G11B23/093
Filed: 1966-05-03
Abstract: 1,072,428. Cassettes. AGFA-GEVAERT A.G. May 3, 1966 [May 3, 1965], No. 19501/66. Heading G5R. [Also in Division G2] A cine camera cassette 2, for use with film having a sound track, has coaxial feed and takeup spools and has a picture gate 6 in a plane normal to the cassette wall in which an aperture is formed to receive a sound head 15, fixed to the camera body. Spring-loaded member 10 engages film 13 at the angle so formed in the film path to tension the film between pressure plate 7 at the gate and driving sprocket 19, slight lateral movement being allowed by recess 2a in the guide channel. This system enables a short film loop of, say, 18 frames to be used between gate and sound head. Sprocket 19, pressure roller 18, pressure plate 16, and brake shoe 14 are carried on a pivoting arm 22 which is cammed into engagement with the film by surfaces 27a, 27b, 27c on the sliding camera cover 26. Spring- loaded pin 29 engages a film perforation to preserve the length of film loop after film has been loaded into the cassette, and is retracted by a further cam 31 on cover 26.
Patent GB-515395-A (GB)
Title: Improvements relating to electron discharge devices
IPC: H01J25/02
Filed: 1938-05-27
Abstract: 515,395. Cathode-ray tubes. STANDARD TELEPHONES & CABLES, Ltd. May 27, 1938, No. 19565/39. Convention date, May 29, 1937. Divided out of 515,229. [Class 39 (i)] In an oscillator tube for wave generating or amplifying wherein a concentrated beam of electrons in its passage through the tube supplies energy to an associated, tuned, output circuit by the retarding effect produced by means of an electrode or electrodes on the electrons, the electrode or electrodes are elongated and the beam is repeatedly effective thereon. In one form, a beam from the gun G, Fig. 2, is projected through a conical spiral A which forms, with members O, a tuned circuit a concentrating coil M is provided and the mid-point of the tuned circuit is connected to the electrode C and to the potential source S. In another form, two pairs of plates R<1>, R<2>, Fig. 3, are connected to Lecher wires O, and the beam is suitably directed by deflecting plates D to pass through the plates R<1>, R<2> as shown in dotted lines, the beam being reflected by negative plates P<1>, P<2>. The beam may be focussed by the field between each reflecting electrode and the electrodes R<1>, R<2>. Specification 488,094: is referred to.
Patent GB-1034359-A (GB)
Title: Improvements in or relating to respiratory apparatus for use in closed-circuit respiration
IPC: A62B7/02
Filed: 1963-05-16
Abstract: 1,034,359. Respiratory apparatus. DRAGER OH, [trading as DRAGERWERK, HEINR, & BERNH DRAGER]. May 16, 1963 [Sept. 21, 1962], No. 19580/63. Heading AST. In a respirator, a nutrient gas bottle 2 or a compartment therefor is of circular cross-section and is nested in a concavity formed in a container 1 for carbon dioxide absorption material, the overall cross-section of the container and the bottle or compartment being of rounded elongate form. The gas bottle 2 and the container are disposed in a casing 24, the container being concave along one side against which the bottle nests. The upper part of the container is connected by an extensible hose 20 to the mouthpiece 19 of a face mask which may be drawn out of the casing for use on removal of a lid 28 extending across the whole or a part of the top of the casing. A vertical tube 7 having a non-return valve 9 extends through the container, to which it is connected at its upper and lower ends by perforated portions 11, so that on inhalation, gas is drawn from the breathing bag 16 through absorption agent in the container and on exhalation gas passes to the breathing bag mainly by way of the tube and the valve. The breathing bag is connected to the gas bottle through a lung-controlled valve which is operated by a lever as the bag collapses. In use, the casing is slid downwardly on the gas bottle and container or a lower lid is hinged downwardly to provide space for the expansion of the breathing bag and, through a pull rope 27, to open the on-off valve of the bottle. In an alternative construction, inner walls of a plastic case provide compartments for the bottle, the breathing bag and the hose, the remainder of the casing forming the carbon dioxide absorption container.
Patent GB-826119-A (GB)
Title: Turbine driven floor tool for vacuum cleaners
IPC: A47L11/204
Filed: 1958-06-19
Abstract: 826,119. Suction nozzles. ELECTROLUX CORPORATION. June 19, 1958 [June 28, 1957], No. 19605/58. Class 8(1). In a suction nozzle for a vacuum cleaner, air, drawn past the guide vanes 48 and exhausted through the outlet 12, drives a turbine wheel 44 which through the shaft 42 and the gear train 52, 54, 58, 60 and 62 rotates a brush 66. At the same time dirt laden air is drawn through the cleaning nozzle 18 and exhausted through the outlet 12. The forward wall 20. of the nozzle 18, is hinged in a channel formed in the upper part of the body 10 and due to the surface contacting fingers 28 is moved to reduce the size of the inlet 18 during forward motion of the nozzle or moved to increase the size of the inlet 18 during rearward motion of the nozzle thus varying the suction at the nozzle 18 and also the flow of air to the turbine wheel 44.
Patent GB-766541-A (GB)
Title: Process of roasting sulphuric ores
Inventor: SCHYTIL FRANZ
IPC: C22B1/10
Filed: 1953-07-15
Abstract: <PICT:0766541/III/1> <PICT:0766541/III/2> <PICT:0766541/III/3> Sulphidic ores are roasted by forming a rising turbulent suspension thereof in a reactor with an oxygen containing gas which passes through the reactor at a velocity so chosen in relation to the solids feed rate that it is higher than that required for the maintenance of a fluidized bed but is lower than that causing pneumatic conveyance through the reactor, the suspension being mainly or wholly discharged at the top of the reactor.  The type of suspension employed is illustrated in Figs. 1 to 3, where Fig. 1 symbolizes a normal fluidized bed operation, Fig. 2 a pneumatic conveyance operation and Fig. 3 the operation according to the present technique.  The volumetric gas content of the solid suspension of Fig. 3 is preferably more than 70 per cent at the lower end of the reactor and preferably 90 per cent or more at the discharge end.  Some solid material may be laterally withdrawn from the rising bed.  According to an example a pyritic ore containing 10 per cent moisture and 39 per cent sulphur with a grain size of 90 per cent under 5 mm. and 50 per cent under 3.5 mm. was fed to a reactor to which compressed air was passed upwardly through a perforated plate.  The gaseous suspension leaving the reactor at a temperature of a 1000 DEG C. contained 10 per cent by volume of sulphur dioxide and the solids, separated in centrifugal separators, contained 1.3 per cent sulphur, a portion thereof may be recycled.  A minor proportion of the solids were withdrawn through a pipe arranged above the perforated plate.
Patent GB-1156455-A (GB)
Title: Method and Apparatus for Producing Aspheric Contact Lenses
Inventor: VOLK DAVID
IPC: G02C7/04
Filed: 1967-04-28
Abstract: 1,156,455. Lathe and tools for turning aspheric surfaces. D. VOLK. 28 April, 1967, No. 19744/67. Headings B3B, B3D and B3T. Apparatus for turning aspheric surfaces on workpieces, e.g. of optical material for contact lenses, comprises a tool of generally cylindrical or conical form having an inclined cutting face of generally elliptical outline, and means for feeding the tool relative to the rotating workpiece along the workpiece axis with the apex of the ellipse on the axis and the cutting face inclined thereto. The tool may be solid, 26, Fig. 7, for forming concave surfaces or hollow 26a, Fig. 8, for forming convex surfaces. Where the angle # + # is less than, equal to or greater than 90 degrees the surfaces formed are respectively ellipsoids, paraboloids and hyperboloids. The tool shank, Fig. 3 has a rectangular section portion 27 with a recess 29 therein whereby it is clamped by a bolt 28, Fig. 1, in a swivel post 20 mounted on a support 21 which may be elevated by rotating it on a screwed projection 22 on the cross-slide 16. The tool may be of hardened steel or of metal with embedded diamond particles. The tool stem on which the cutting face is formed may be an elliptic cylinder or cone and the cutting face may be slightly curved in concave or convex sense, thus providing, where desired, a cutting face not truly elliptical.
Patent GB-792017-A (GB)
Title: Process for the production of metal hydrides
IPC: C01B6/04
Filed: 1955-07-08
Abstract: Acetylene is produced together with the hydride of lithium, sodium, potassium, magnesium, calcium, strontium, or barium by reacting the metal carbide with hydrogen.  The metal compound reacted may be in finely-divided form which may be produced by grinding in vacuo or in an inert atmosphere.  Nitrogen, sulphur, iodine, ammonia, hydrogen sulphide, hydrogen iodide, mercuric iodide, calcium iodide, magnesium iodide, sodium sulphide, calcium sulphide, or sodium may be present as catalyst.  Temperatures of 0-1000 DEG  C., pressures of 0.05-600 atmos., and particle sizes of 1-10 mm. are specified for the production of the hydride.  The acetylene, which is the primary reaction product other than the hydride, remains substantially unchanged at a temperature of 0-300 DEG  C., a pressure of 0.05-5 atmospheres, and a high flow velocity.  Calcium carbide may be hydrogenated in the form of moulded powder.  Calcium hydride may be produced in a two-stage process, reacting first at 400 DEG  C., forming mainly acetylene as the gaseous product, and then at 800 DEG C.ALSO:The hydride of lithium, sodium, potassium, magnesium, calcium, strontium, or barium is produced by reacting the metal boride, carbide, cyanide, cyanamide, phosphide, or silicide with hydrogen. The non-metal constituent of the compound is also hydrogenated. The metal compound reacted may be in finely divided form which may be produced by grinding in vacuo or in an inert atmosphere. Nitrogen, sulphur, iodine, ammonia, hydrogen, sulphide, hydrogen iodide, mercuric iodide, calcium iodide, magnesium iodide, sodium sulphide, calcium sulphide, or sodium may be present as catalyst. Temperatures of 0-1000 DEG  C., pressures of 0.05-600 atmos., and particle sizes of 1 m -10 mm. are specified.  Calcium carbide may be hydrogenated in the form of moulded powder.  Calcium hydride may be produced in a two-stage process, reacting first at 400 DEG  C., forming mainly acetylene as the gaseous product, and then at 800 DEG  C.
Patent GB-1458800-A (GB)
Title: Simultaneous refining and dewaxing of crude vegetable oil
IPC: C11B3/06
Filed: 1975-05-12
Abstract: 1458800 Refining vegetable oils PROCTER & GAMBLE CO 12 May 1975 [13 May 1974] 19855/75 Heading C5C Crude vegetable oils, e.g. sunflower, safflower and corn oil are purified by removing the hydrophilic and waxy components by subjecting the oil to the following process: (a) mixing an aqueous alkali solution with the oil, to produce an emulsion both the oil before mixing and the emulsion after mixing having a temperature from 15 to 45 F., (b) mixing phosphoric acid or an aqueous solution thereof with the emulsion to break it into a two phase system comprising an oil phase and an aqueous phase and (c) separating the oil phase from the aqueous phase. The alkali can be NaOH, KOH, Ca(OH) 2 , NaHCO 3 , Mg(OH) 2 , NH 4 OH or an organic alkali. The phosphoric acid is preferably a 20 to 40 wt. per cent solution.
Patent GB-209372-A (GB)
Title: Improvements relating to compasses, spring-bows, dividers and like instruments
IPC: B43L9/16
Filed: 1923-08-03
Abstract: 209,372. Harris, W. J., and Cook, F. G. Aug. 3, 1923. Compasses and dividers, ½f the type in which the legs are separated by a spring and closed by a screw, have the adjusting- means so formed as to prcvide an indicator or gauge for determining a measured opening of the legs. The adjusting-nut g, which bears on the cylindrical part k of a stump f engaging the legs, is formed with a conical part h bearing graduation marks j which are read against an index l on the part k. The lower part of the bolt e is marked with graduations p coacting with a finger o on the stirrup to indicate complete turns of the nut.
Patent GB-915893-A (GB)
Title: Process for the production of aminoalykylsilanes
IPC: C07F7/08
Filed: 1961-06-02
Abstract: N-(aminoalkyl) aminoalkyl alkoxy silanes are prepared by reacting under anhydrous conditions at temperatures of 50 DEG  to 300 DEG C., (1) a cyanoalkyl silane of the formula NC(CaH2a)Si(R)bA3-b where R is a monovalent hydrocarbon radical of 1 to 10 carbon atoms free from aliphatic unsaturation, A is an alkoxy radical of 1 to 8 carbon atoms, a is 2 to 5, b is 0 or 1, and the cyano group is removed from the silicon atom by at least 2 carbon atoms, (2) an amino compound of the formula <FORM:0915893/IV(a)/1> where r is 2 to 6, the nitrogen atoms are separated by at least 2 carbon atoms, G is hydrogen, beta-hydroxyethyl, a C1-6 alkyl or a (CH2CH2NH)sH radical where s is 1, 2 or 3, and G1 is hydrogen, beta-aminoethyl, beta-hydroxyethyl or C1-6 alkyl radical, and (3) hydrogen at an initial pressure of at least 7,1 kg./cm.2, in the presence of a hydrogenation catalyst.  A solvent may be present.  Suitable catalysts are Raney nickel, Girdler nickel (nickel on silica gel) and bis-(cyclopentadienyl) nickel.  The examples describe the preparation of (1) and (3) N-(betaaminoethyl) gamma-aminopropyl triethoxy silane from beta-cyanoethyl triethoxy silane and ethylene diamine; (2) N-(beta-aminoethyl)-gammaaminoisobutyl methyl diethoxy silane; and (4) a resinous mass obtained when water is present.  Many other reactants and products are listed.  Uses: Sizing agents for glass cloth.  Specifications 847,802, 847,803 and 847,804 are referred to.
Patent GB-996678-A (GB)
Title: Garbage disposal unit
IPC: E03C1/266
Filed: 1963-05-20
Abstract: 996,678. Garbage shredders. NIKKO DENKI SEISAKUSHO Ltd. May 20, 1963 [May 21, 1962], No. 19934/63. Heading B2A. A garbage-disposer comprising a casing 1, a motor-driven rotatable disc 4 mounted therein for rotation in a horizontal plane, a comminuting chamber 11 above the disc having an inlet opening 12, means associated with the casing and disc in the form of a plurality of cutting edges 14 on the disc and grooves 5 in the casing for grinding the garbage, and discharge means 16 for the comminuted material, is characterized in that the inner wall surface of the comminuting chamber is of substantially part-spherical shape and is provided with one or more inward projections 2.
Patent GB-703621-A (GB)
Title: Improvements relating to the manufacture of footwear
IPC: A43D25/20
Filed: 1950-08-11
Abstract: 703,621. Attaching cemented shoe soles. LOTUS, Ltd., and MERCER, F. G. Aug. 7, 1951 [Aug. 11, 1950; May 28, 1951], Nos. 19978/50 and 12422/51. Drawings to Specification. Class 17(2) In a method of attaching shoe soles to lasted shoe uppers by adhesive, the adhesive coated sole is dipped into a liquid mixture which simultaneously softens the leather sole and activates the adhesive and after removal the wetted sole is subjected to a conforming operation before transferring it to a shoe press. In an example of a suitable liquid mixture of which at least 60 per cent by volume is made up of constituents which will activate adhesive of nitro-cellulose type without adversely affecting its adhesive quality, by volume 35 per cent is acetone, 25 per cent petroleum ether, 10 per cent ethyl acetone, 25 per cent is methyl ethyl ketone and 5 per cent is di-butyl phthalate. The method may be carried out by the aid of apparatus described in Specifications 683,829 and 703,650. A separate conforming appliance located adjacent to a dipping unit may however be used. Specifications 496,389, 680,524, 680,555 and 680,561 also are referred to.
Patent GB-813854-A (GB)
Title: Screen for direct-viewing storage tube
IPC: H01J29/39
Filed: 1956-06-28
Abstract: 813,854. Cathode-ray storage tubes. HUGHES AIRCRAFT CO. June 28, 1956 [July 1, 1955], No. 20112/56. Class 39(1) In a direct-viewing electronic storage tube, the storage screen comprises a layer of secondary electron emissive dielectric material disposed over one side of a conductive screen having meshes, the meshes being free from dielectric material in the region of each interstice, so that each interstice of the screen exerts the same control over the flow of flood electrons. In a process for fabricating such a screen an electroformed nickel screen 14, having about 250 meshes per inch, is first coated over its entire surface with a layer of photo resist. Light is then projected towards one side of the screen so that the photo resist on that side and over the inner periphery of each interstice is hardened. The unhardened portions of the photo resist are removed, e.g. by immersing the screen in water or alcohol, after which the dielectric material, e.g. magnesium fluoride, is evaporated and thereafter condensed onto the uncoated side of the nickel screen to form a layer 12 of thickness from 1 to 10 microns. When the hardened portion of the photo resist has been removed by heating or by dissolving it in an appropriate chemical solution, any dielectric material left unsupported-may be broken away by agitating the screen in a suitable medium. The storage screen is completed by electroplating a metallic coating 24 onto the uncoated surfaces of the nickel screen so that the ultimate transparency of the screen is approximately 40 per cent. and the thickness of the conductive screen is about 1 mil. Specification 780,907 is referred to.
Patent GB-1151479-A (GB)
Title: Crosslinked Acrylate Copolymers
Inventor: CORTE HERBERT
IPC: C08F220/12
Filed: 1968-04-29
Abstract: 1,151,479. Acrylate ester copolymers. FARBENFABRIKEN BAYER A.G. 29 April, 1968 [14 June, 1967(2)], No. 20121/68. Heading C3P. An acrylate copolymer is produced by copolymerizing an acrylate ester in the presence of a catalyst and a cross-linking agent containing two unconjugated polymerizable double bonds and having the formula in which A represents an aromatic or cycloaliphatic radical, X represents an alkenyl radical containing a terminal olefinic unsaturation or has the same meaning as Y, Y represents a radical of the formula in which each R, which may be the same or different, represents a hydrogen atom or a C 1  to C 6 -alkyl radical and R<SP>1</SP> represents a carboxyl, alkoxycarbonyl, cycloalkoxycarbonyl, phenoxycarbonyl, chlorocarbonyl, carbamoyl, or cyano radical, Z represents a C 1  to C 6 - alkyl radical or a halogen atom and n represents 0 or an integer of from 1 to 4. Specified acrylates are methyl, ethyl and phenyl acrylates. Suitable cross-linking monomers are p- and n-vinyl cinnamic acids, p- and m-isopropenyl cinnamic acids, benzene - bis - 1,4 - or - 1,3 - (beta-acrylic acid), diphenyl-bis-2,2<SP>1</SP>-(beta-acrylic acid),  diphenyl methane-bis-4,4<SP>1</SP>- (beta-acrylic acid), naphthalene - bis - 1,4-, - 1,3 -, - 1,5, - or - 2,6 - (beta-acrylic acid) and esters and nitriles thereof. An additional cross-linking agent such as divinyl or trivinyl benzene or divinyl toluene, xylene or naphthalene and further monomers may be incorporated in the copolymer. In the examples, methyl acrylate and, in some cases divinyl benzene are copolymerized with benzenebis-1,3-(beta-acrylic acid methyl ester), benzene-bis-1,4-(beta-acrylic acid methyl or nbutyl ester) or benzene-bis-1,4-(beta-acrylonitrile) in aqueous suspension. The resulting bead copolymers are hydrolysed with NaOH/ MeOH. The copolymer containing benzenebis-1,4-(beta-acrylic acid n-butyl ester) is reacted with 1-amino-3-dimethyl-aminopropane.
Patent GB-205872-A (GB)
Title: Improvements relating to the crank axle bearings of cycles
IPC: B62K19/34
Filed: 1922-07-25
Abstract: 205,872. Taylor, G. July 25, 1922. Ball bearings. - In an adjustable ball bearing for the crank axle 4 of a cycle comprising a cup 7 screwed into the bottom bracket 5 and a locking- ring 8 screwed on the cup and abutting against the bracket, a supplementary locking-ring 9 screws on the outside of the bracket to coact with the ring 8. The thread on the outside of the bracket may be opposite to that on the cup 7. Reference has been directed by the Comptroller to Specification 20,650/97.
Patent GB-1143945-A (GB)
Title: Improvements relating to thermo-electric converter tubes for generating electric power from heat
Inventor: CLAPP MALCOLM DONALD
IPC: H01J45/00
Filed: 1965-05-13
Abstract: 1,143,945. Discharge tube sawtooth generatirig circuits. FAIREY ENG. Ltd. 13 May, 1966 [13 May, 1965], No. 20301/65. Heading H3P. [Also in Division H1] In a thermo -electric converter tube circuit comprising a gas-filled thermionic diode in which the main discharge is controlled by an auxiliary discharge between the emitter 11 and an auxiliary electrode 15 which neutralizes the space charge and in which electricity is generated from heat which is supplied to the emitter, an A.C. or ripple current with a sawtooth waveform is generated by connecting the emitter 11 and electrode 15 as parts of a relaxation oscillator circuit which cyclicly triggers and extinguishes the auxiliary discharge. Capacitor 17 is charged until the triggering voltage of the auxiliary discharge is reached whereupon the capacitor discharges through the diode until the maintaining voltage is reached and the discharge extinguished; the capacitor is then recharged and the cycle repeated to produce a sawtooth waveform in the load circuit 14 whose frequency is governed by the R-C. time constant of the relaxation oscillator circuit and whose waveform is determined by the respective build-up and decay of the ionization produced by the auxiliary discharge pulses. The cathode 11 is heated by a radioactive isotope.
Patent GB-1515682-A (GB)
Title: Circuitry in a wide range electron capture detector
IPC: G01N30/70
Filed: 1975-05-14
Abstract: 1515682 Gas detector MDH INDUSTRIES Inc 14 May 1975 [31 July 1974] 20329/75 Heading G1N A frequency-programmed electron capture detector (ECD) and circuit is basically similar to that described in Specification 1329407 (Division G1) but the voltage controlled oscillator (VCO) 68 forming a pulse generator 20 has a frequency range (maximum to minimum) of about 2:1, compared with about 1000:1 for the prior art, whereby response speed also varies with sample concentration only by about 2:1. Thus the repetition rate of pulses supplied to the ECD 12 is determined by a frequency selector circuit 28 including frequency divider 24 providing via selector 26 a selected pulse frequency from fvco/2,fvco/4, fvco/8 and so on to fvco/1024 where fvco is the pulse generator output frequency. In this way a frequency ratio of more than 1000:1 is obtained for the pulses energizing the ECD whilst the VCO frequency ratio is about 2:1. The current from the ECD is maintained at a reference level set by baseline adjust circuit 16 by varying the p.r.f. of energizing pulses to the ECD by means of the VCO 68 responding to variations of V 1 , the output voltage of amplifier 14. This voltage is smoothed at 22 and fed to an amplifier-discriminator 30 which produces a signal whenever V 1  is outside the operating range of voltages for the VCO. The output of the amplifier-discriminator acts via delay 32 and counter 34 to select a frequency from the divider so that V 1  is maintained within the operating range e.g. 1 to 5 volts. The output of the signal selector 26 is also applied to a digital output signal circuit 25, frequency-voltage converter 29 and audible output signal circuit 27. The lastmentioned produces audible output signals of pitch proportional to the frequency of the pulses applied to the ECD and therefore proportional to the concentration of electron-capturing gas molecules in the sample.