baber/WOPTO huggingface dataset:
Patent GB-1523987-A (GB)
Title: Process and apparatus for measuring radioactive radiation
IPC: G01T1/24
Filed: 1976-11-10
Abstract: 1523987 Detecting atomic radiation LE MATERIEL TELEPHONIQUE 10 Nov 1976 46851/76 Heading G1A In a device for detecting atomic radiation a number of detectors of different spectral sensitivity are combined so that the device is substantially independent of wavelength over a predetermined range of the spectrum of radio-active radiation. The detectors may be made of semi-conductor material. The detectors may also be diversified by the choice of their supply and bias voltages or by the screening surrounding them. Alternatively, they may differ from one or other by their individual operating characteristics.  The set of detectors 1 supply a preamplifier and integrator 4 which activates a trigger circuit 5 when the radiation level is high enough. The output of the trigger circuit 5 feeds a counter 6 connected via a decoder 8 to a display 9 or a warning device 13. A more detailed circuit corresponding to boxes 1, 4 and 5 is disclosed.
Patent GB-1361595-A (GB)
Title: Electroluminescent devices
IPC: H04N3/14
Filed: 1970-10-05
Abstract: 1361595 Tellunum-base alloys DEFENCE SECRETARY OF STATE FOR 24 Sept 1971 [5 Oct 1970] 47175/70 Heading C7A [Also in Division C4] A bi-stable memory switch comprises 81% Te, 15% Ge and 4% As. A bi-stable threshold switch comprises 48% Te, 30% As, 12% Si and 10% Ge. Both switches are used in an electroluminescent display device. The values are atomic percentages.
Patent GB-1495987-A (GB)
Title: Methods of producing compound thin films on substrates
IPC: C01G25/00
Filed: 1975-11-17
Abstract: 1495987 Depositing monatomic layers in sequence INSTRUMENTARIUM OY 17 Nov 1975 [29 Nov 1974] 47212/75 Heading C7F Compound films are grown from the gaseous phase by depositing the chemical elements A and B of the compound in sequence and one at a time in vacuo or inert gas, the vapour pressure of the elements and temperature of the substrate and/or interaction time being controlled so that except for atoms A or B bonded individually to atoms B or A respectively of the preceding layer, all atoms of the element being deposited remain in or return to the gaseous phase, whereby each layer is deposited as a monatomic layer only. Vapour deposition or sputtering may be used, the substrate being arranged on a rotating holder which rotates in turn over sources of respective elements; the substrate is hotter than the sources whereby unbound atoms are back-evaporated; suitable apparatus is described. The substrate may be glass, and the following coatings are exemplified: (1) ZnS produced from evaporated Zn and evaporated S (2) SnO 2 , produced by evaporating Sn and reacting with O 2  plasma and (3) GaP, produced by evaporating both components.
Patent GB-1422515-A (GB)
Title: Solenoid valves
IPC: F16K31/40
Filed: 1974-11-04
Abstract: 1422515 Valve CONTROLS CO OF AMERICA 4 Nov 1974 [17 Dec 1973] 47557/74 Heading F2V A diaphragm 18 with a rigid insert 20 seats on a seating 16 between an annular inlet port 12 and a central outlet port 14, being seated by fluid pressure obtained via a bleed hole 22 in the diaphragm, the pressure being vented to outlet, to allow the diaphragm to lift from the seating, by the lifting of the solenoid operated vent valve plunger 27 from its seating 48 which surrounds the vent hole 28, the diaphragm having an arcuate groove 24 in its upstream surface which communicates with the bleed hole, the groove width being less than the bleed hole diameter to trap particles which would block the latter. The bleed hole is flushed by the swirl action of fluid passing to it from a divergent passage 26. A coil 44 produces magnetic flux in two flux sleeves 37, 40 which are separated by a non-magnetic metallic heat transfer aid 42. The magnetic flux acts on the magnetic stainless steel plunger which is slidably enclosed in a sleeve 32 of plastics material, which may be nylon having hum damping properties.
Patent GB-1346115-A (GB)
Title: Self-balancing centrifuge method and apparatus
IPC: B04B5/02
Filed: 1971-10-13
Abstract: 1346115 Centrifugal separators TECHNICON INSTRUMENTS CORP 13 Oct 1971 [30 Oct 1970] 47599/71 Heading B2P [Also in Division F2] A centrifuge, comprising a rotatable centrifuge wheel 10 with a plurality of pivotable container holders 34, 34a arranged around its periphery for holding containers 14 for samples of liquid, e.g. blood, to be centrifuged, is dynamically balanced automatically by means of a counter-balancing mass 32 contained, and freely movable, in an annular chamber 30 within the centrifuge wheel. The centrifuge wheel 10 is attached to a shaft 18 driven by a motor 20 supported on a plate 22 and the assembly is mounted as an inverted pendulum about a fixed, spherical pivot 24 and biassed by circumferentially spaced springs 28 so that the shaft 18 assumes a vertical position and the plate 22 a horizontal one. The counterbalancing mass 32, which is at the same vertical level as the container holders 34, 34a when the centrifuge is in operation, automatically moves in an angular fashion in the annular chamber 30, at speeds above the speed corresponding to the natural vibration frequency of the pendulum system, to the counter-balancing position compensating for any unbalanced condition in the loading of the container holders.  The centrifuge wheel 10 includes an upper removable tray portion 12 at the periphery of which the container holders 34, 34a are pivotally mounted as at 36. Auxiliary buffer springs 42 may be provided to prevent excessive wobbling of the centrifuge. A number of energy absorbers 38, which may be of the hydraulic fluid type, may be interspersed between adjacent springs 28 to prevent build-up of vibration as the natural resonant frequency of the system is approached. Energy absorption may also be provided by substituting rubber springs for the springs 28. The compensating mass 32 may consist of a liquid or, preferably, of at least two solid bodies (32A, 32B), Fig. 2 (not shown), which are capable of sliding or rolling within the chamber 30. The fixed pivot 24 may be dispensed with and the entire vertical support of the centrifuge may be provided through the springs 28 and the energy absorbers 38. Pivoting or rocking of the plate 22 is achieved in response to unbalanced conditions.
Patent GB-1536122-A (GB)
Title: Method and apparatus for electrophotography
IPC: G03G5/00
Filed: 1975-11-19
Abstract: 1536122 Electrophotographic processes CANON KK 19 Nov 1975 [22 Nov 1974] 47635/75 Heading B6C A method of cyclic electrophotography wherein a primary latent electrostatic image is formed on a photoconductive screen and an ion current is passed through the screen, the ion current being modulated by the image so as to form secondary latent image on a receptor which is then toner developed and the ion current step is repeated at least once with the same image, there is applied a corona discharge between at least one of the ion modulation steps which reduces any charge on the photoconductive screen formed during a previous modulation step. Preferably, the corona discharge is of opposite polarity to the ion modulation step and an electrode is placed on the opposite side of the screen to preserve the primary latent image. As shown, a photoconductive screen 52 in the form of a drum is uniformly exposed to lamp 58 to remove any charge, positively charged by corona 59 (+8 Kv D.C.), imagewise exposed at 60 whilst applying an A.C. charge from corona 60 and uniformly exposed by lamp 61 to produce the primary image on the screen, the corona ion modulation being formed by corona 64 (-12 Kv D.C.) whilst the screen has -5 Kv applied thus producing a secondary latent image on drum 66 which is developed at 68. Corona 62 and electrode 63 are used to remove any unwanted charge from the screen by applying + 2 Kv to corona 62 and -8 Kv to screen 52 and such a charge reduces loss in contrast in the second image. As shown in Fig. 8, removal of the positive charge built up is achieved by applying a negative corona discharge from corona 29 and a positive charge to electrode 27 so that the primary latent image is not destroyed as well.
Patent GB-1018533-A (GB)
Title: Improvements in or relating to radio aerials
IPC: H01Q13/20
Filed: 1962-12-18
Abstract: 1,018,533. Aerials. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Dec. 18, 1962 [Dec. 29, 1961], No. 47650/62. Heading H4A. An end-fire aerial system comprises two identical semi-cylindrical non-radiating conductive segments 1 separated by narrow slots AB, CD and closely surrounded by a dielectric sleeve 2. In use the conductive segments 1 are excited in phase opposition from a bifilar line connected to the segments (Figs. 3, 4, 5 and 10, not shown), the electric fields in the slots thus being in phase (Fig. 2, not shown) causing the sleeve 2 to radiate endwise. The conductor segments 1 may comprise metal plates or metallic coatings on the inner surface of the dielectric sleeve 2, and the portions connected to the feeder line may be tapered (Figs. 4 and 10, not shown). The inside diameter of the sleeve may be #/3 and its thickness may be #/20, the slot width being #/10.
Patent GB-1020889-A (GB)
Title: Corrugated product
IPC: B29C65/48
Filed: 1964-11-27
Abstract: 1,020,889. Laminates. HAVEG INDUSTRIES Inc. Nov. 27, 1964 [Nov. 29, 1963], No. 48213/64. Heading B5N. A unit comprising a corrugated panel of a foamed thermoplastic resin having at least one unfoamed, non-porous skin of the resin having peaks and low points in the corrugations, and, united to the skin of the panel at the peaks thereof a flat panel. The unit is made by continuously extruding a foamed thermoplastic resin sheet, forming at least one and possibly two unfoamed skins on the sheet by rapidly chilling one or two surfaces of the sheet, corrugating the sheet by conventional means and laminating a flat panel to at least one face thereof, either whilst the peaks are tacky or by an adhesive. Specified flat panels are foamed thermoplastic resins, wood fibre boards, gypsum boards, wood, steel, aluminium, polystyrene, polyethylene, polypropylene, P.V.C., condensates of formaldehyde with phenol, urea or melamine, polyethylene terephthalate, styrene modified polyethylene glycol - polypropylene glycol-adipate-maleate, copper, glass, exploded wood fibres, wood flour bonded with phenol-, urea- or melamine-formaldehyde resins, paper, cardboard, or glass fibres bonded with a styrene modified polyethylene glycol, polypropylene glycol-adapate-maleate. Specified foamed materials are polystyrene, a terpolymer of styrene, butadiene and acrylonitrile, a butadienestyrene copolymer, polybutadiene modified polystyrene, a copolymer of chlorosulphonated polyethylene and styrene, a blend of polystyrene and polybutadiene, a blend of polystyrene and hydrogenated polybutadiene, polystyrene made in the presence of hydrogenated polybutadiene, a blend of polystyrene and polyisoprene, a blend of polystyrene with a rubbery butadiene-styrene copolymer, a polymer of styrene and divinyl benzene, chlorinated rubber, ethyl cellulose, cellulose acetate, cellulose acetate-butyrate, asphalt, coal tar pitch, paraffine wax; homo- and copolymers of ethylene, propylene, isobutylene, butene-1, vinyl chloride, vinylidene chloride, vinyl acetate, vinyl stearate, vinyl benzoate, vinyl methyl ether, vinyl ethyl ether, vinyl isobutyl ether, chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropylene, acrylic acid, methacrylic acid, methyl acrylate, ethyl acrylate, methyl methacrylate, acrylamide, acrylonitrile and methacrylonitrile and interpolymers of the above specified monomers with maleic anhydride, diethyl maleate, dibutyl fumarate, diallyl maleate and dipropyl maleate, polycarbonates, polyoxymethylene, oxymethylenealkylene oxide copolymers, polyurethanes, polyethylene terephthalate and nylon. Specified adhesives are epoxy resins, styrene glues, caseins, urea - formaldehyde, resorcinolformaldehyde or melamine-formaldehyde.
Patent GB-1136171-A (GB)
Title: Improvements in clothes drying cupboards
IPC: D06F58/10
Filed: 1966-10-27
Abstract: 1,136,171. Hot closets. R. R. G. MARTIN. 27 Oct., 1966 [29 Oct., 1965], No. 48219/66. Heading F4G. A hot closet comprises an upper compartment housing a tangential-flow fan and air heating means for passage of air downwardly into a lower compartment enclosed by insulated side walls and a door, only the bottom edge of which has an air-tight seal so as to allow water vapour to escape through the unsealed edges. An ultra-violet lamp is mounted beneath the upper compartment for sterilizing the recycled air.
Patent GB-1520657-A (GB)
Title: Implantable electromedical devies
IPC: H01M50/276
Filed: 1975-11-24
Abstract: 1520657 Implantable electromedical devices MEDTRONIC INC 24 Nov 1975 [25 Nov 1974] 48221/75 Heading A5R [Also in Division H1] An implantable electromedical device particularly a heart pacemaker, contains a canister having therein an electrical power source, and electrical components D 1 , D 2 , Fig. 4, connected to the power source via connections 16, Fig. 3, extending through the outer wall of the canister, the cannister having a cover 17, a bottom wall 10 and a flange 13, extending from a continuous side wall, the side wall being generally rectangular in plan view with straight side portions 11 joined by arcuate corners 12 each having a radius of curvature approximately equal to one quarter the distance between opposite ones of portions 11. The cover 17 is coextensive with the flange 13 and both may be flat or otherwise, e.g. having arcuate parts 19, 14 cover 17 being attached to flange 13 by adhesives or by welding so that the canister can be hermetically sealed if required. Feed-through terminals 16 are located in a bevelled part 15 of the side wall. The canister may be located centrally in the pacemaker package with electrical circuit components along the straight side wall portions 11. The cover 17 may form half of the outer surface of the pacemaker package the other half being a similarly shaped member 23, Fig. 4, welded 24 to cover 17 and flange 13. The canister and member 23 may be of titanium, or, if lithium-iodic rather than zinc-mercury cells are used, the canister may be of stainless steel. Cover 17 and member 23 may form one electrode of the pacemaker. The canister may contain a voltage doubler, or diodes for interconnecting multiple power sources in redundant parallel circuits as disclosed in U.S. Specification No. 3757795.
Patent GB-1370651-A (GB)
Title: Systems for controlling the temperature within a plurality of  conditioned spaces
IPC: F24F13/12
Filed: 1971-10-18
Abstract: 1370651 Ventilating W K HALL JNR 18 Oct 1971 48361/71 Heading F4V Rooms 84, 86 are supplied with conditioned air from a cooling unit 94 which supplies air to a first plenum chamber 90. Mixing devices 96, 98 are mounted in this plenum and supply a mixture of cold and warm air to the rooms 84, 86, the warm air being exhausted from the rooms through outlets 85, 87 into a chamber 88 and then to the mixing devices. Air from the rooms is also exhausted into a second plenum chamber 92 which is connected to the unit 94 by a conduit 93. The proportions of cold and. warm air supplied by the mixing devices 96, 98 are controlled by a damper which operates in response to a temperature sensor in the rooms. The damper comprises two sets 114, 116 of two perforated plates at right angles, each set comprising one fixed plate 122, 134, and a slidable plate 128, 139 attached to a movable rod 130, the perforations being arranged so that one inlet is completely closed when one is completely open. Each damper controls either the warm or the cold air inlet, the mixed air being delivered to the rooms by a fan (106) (not shown).
Patent GB-1152516-A (GB)
Title: Improvements in or relating to Distance Measuring Apparatus
IPC: G01S17/32
Filed: 1966-10-28
Abstract: 1,152,516. Photo-electric distance measuring. ALBISWERK ZURICH A.G. 28 Oct., 1966 [25 Nov., 1965], No. 48411/66. Heading H4D. Relates to the kind of distance-measuring light system in which the echo modulation phase is compared with the modulation phase on the transmitted beam. According to the invention a fixed optical delay 9 can alternatively be inserted in the transmission path in the ambient conditions, the phase comparison being made between beams C and D and the frequency of modulation oscillator 3 is adjusted to produce a predetermined reading on phasemeter 8. Thus the wavelength of the modulation is fixed relative to the group velocity, to be the length of optical delay 9 when the predetermined reading is zero.
Patent GB-1202250-A (GB)
Title: Improvements in or relating to hydropneumatic pressure accumulators
IPC: F15B1/10
Filed: 1967-10-26
Abstract: 1,202,250. Hydraulic accumulators. ALFRED TEVES G.m.b.H. Oct.26, 1967 [Jan. 26, 1967], No. 48690/67. Heading F1P . A resilient diaphragm 3 which divides a hydraulic accumulater 1, 2 into gas and liquid spaces has embedded therein a thin layer 14 of resilient gas impermeable material e.g., methyl rubber. The laminated diaphragm has a central third portion 11, a thin intermediate portion 12 and is vulcanized at its periphery 13 to a metal ring 4 held in a casing recess 15.
Patent GB-1153097-A (GB)
Title: Production of Olefinic Fluorides
IPC: C07C17/08
Filed: 1967-10-31
Abstract: 1,153,097. Olefinic fluorides. P.P.G. INDUSTRIES Inc. 31 Oct., 1967 [1 Nov., 1966], No. 49316/67. Heading C2C. Olefinically unsaturated fluorides, e.g. vinyl fluoride, 2-fluoropropylene, fluorostyrene and chlorofluoroethylene are obtained by reacting the corresponding acetylenic compounds with hydrogen fluoride in a liquid medium containing a fluoride salt. The latter may be a salt of hydrogen fluoride and an inorganic or organic base and it may be added as such or it may be formed in situ from the base and the hydrogen fluoride present. A mercury salt or compound may be used as a catalyst.
Patent GB-1174924-A (GB)
Title: Separation Process for Gibberellic Acid
Inventor: ELSON GEORGE WYNNE
IPC: C07D307/93
Filed: 1966-11-03
Abstract: 1,174,924. Separation of Gibberellic acid. IMPERIAL CHEMICAL INDUSTRIES Ltd. 5 Oct., 1967 [3 Nov., 1966], No. 49367/66. Heading C2C. The gibberellic acid content and gibberellin A 4  and/or gibberellin A 7  content of a mixture of gibberellic acid with gibberellin A 4  and/or gibberellin A 7  is enriched by partitioning the mixture between an aqueous phase of pH 4- 8À5 and an organic phase comprising a waterimmiscible or partially water-miscible organic solvent selected from esters, ketones and alcohols of up to 10 C atoms, separating the phases to give an aqueous phase enriched in gibberellic acid and an organic phase enriched in gibberellin A 4  and/or gibberellin A 7 , and subsequently recovering the gibberellin A 4  and/ or A 7  from the organic phase. Suitable organic solvents are ethyl acetate, n-butyl acetate, methyl ethyl ketone, methyl n-propyl ketone, n-butanol and n-amylalcohol. The pH or the aqueous phase is preferably 4À4-5À5.
Patent GB-1280216-A (GB)
Title: Process for the production of powder-form rubber master batches
IPC: C08L21/00
Filed: 1969-10-10
Abstract: 1280216 Rubber master-batches DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 10 Oct 1969 [12 Oct 1968] 50015/69 Headings C3P and C3Q An aqueous dispersion of an active silica or silicate is mixed with a rubber latex, the mixture is coagulated and dried, and resorcinol and hexamethylene tetramine are incorporated in the dried coagulate. This master-batch is then suitable for incorporation in further rubber or can be used itself. The resorcinol and hexamethylene tetramine are advantageously incorporated while the coagulate is being ground.
Patent GB-1128759-A (GB)
Title: Measuring apparatus
IPC: G01B5/04
Filed: 1966-11-10
Abstract: 1,128,759. Measuring continuous lengths of materials. ARTOS ENGINEERING CO. Nov. 10, 1966 [March 14, 1966], No. 50373/66. Heading G1M. Apparatus for measuring desired lengths of material comprises sensing means 27 responsive to the passage of the material 19, transport mechanisms 71, 73 driven by said sensing means and including linear elements 72, 74 movable thereby a distance proportional to the movement of material as it passes said sensing means and means 118, 120 responsive to the movement of said linear elements for indicating the measurement of the desired length of material. The material is fed between pressure plates 21, 23 to measuring wheel 27, the movement of which on shaft 42 rotates shaft 48 to move one of tapes 72, 74 dependent on the position of clutch 46. Each tape bears an actuator 114, 116 so positioned on the tape that when it reaches switches 118, 120 the correct amount of material has passed over the measuring wheel 22. The actuators may either be moved relative to the tape to change the range of measurement or a different amount of tape wound on to rewind reels 80, 84 or on to take-up reels 78, 82. Actuation of switches 118, 120 actuates a solenoid to operate a cutting apparatus. This actuation also disengages clutch 46 to allow tape to be rewound by means of springs on to reels 80, 84. The clutch is meanwhile engaged on to the other transport means so that the other tape can be used while the first tape is rewound. The disc 36 for indicating the lengths of material to be cut operates a system of gears for determining the amount of the tape which is rewound.
Patent GB-1073262-A (GB)
Title: Volumetric measuring apparatus
IPC: A61B5/093
Filed: 1964-12-11
Abstract: 1,073,262. Recording spirometers. D. R. GARBE. Dec. 13, 1965 [Dec. 11, 1964], No. 50657/64. Heading A5K. A recording spirometer as illustrated with reference to Fig. 1, comprises a pivotally mounted member 3, a breath-receiving bag 6 expandable on being inflated by the breath to move the member progressively about its pivot, a recording device 10, 12, 14 operable to record the movement of the member as a function of time, and a resilient loading for the member by which means the tendency of the inertia of the member to cause it to move non-linearly with the flow of breath into the bag, is substantially eliminated. The resilient loading preferably is a spring 26 arranged to bias the member towards an intermediate position of its movement.
Patent GB-1292509-A (GB)
Title: Methods of and compositions for the killing of weeds
IPC: C07C275/28
Filed: 1970-10-27
Abstract: 1292509 Herbicidal application of a urea derivative PEPRO SOC POUR LE DEVELOPPEMENT ET LA VENTE DE SPECIALITES CHIMIQUES 27 Oct 1970 [27 Oct 1969] 50977/70 Heading A5E [Also in Division C2] N - p - tert. - butylphenyl - N', N' - dimethylurea finds application in the selective killing of weeds in crops, e.g. in wheat, cotton, soya, maize or carrots.
Patent GB-1374873-A (GB)
Title: Flotation of fluorite
IPC: B03D1/02
Filed: 1972-11-07
Abstract: 1374873 Froth flotation of fluorite MONTECATINI EDISON SpA 7 Nov 1972 [10 Nov 1971] 51192/72 Heading B2H In a process for separating fluorite from fluorite minerals whose gangue contains metal carbonates and/or barium sulphate, the ground fluorite mineral is suspended in water to form a slurry which is conditioned by allowing it to stand with polyethylenoxy alcohol, having the general formula R-(O-CH 2 -CH 2 ) n -OH where R is a straight chain alkyl group, preferably having 8 to 20 carbon atoms, and n is an integer, preferably in the range of 6 to 50, to depress the metal carbonates and/or the barium sulphate, and the liquor is subjected to subsequent conditionings with a coadjuvant of a fluorite collector and with a collector of fluorite, and then to flotation. The fluorite collector may be an unsaturated fatty acid, e.g. oleic acid. The coadjuvant may be a polyethylenoxyester, a methyl-oleyl-taurine or sodium salt thereof, or an ethylenoxylated tallow oil. After a first froth flotation the concentrate gathered in the froth may be refloated a number of times, preferably after reconditioning with smaller amounts of the depressor alcohol. Three examples are given. In one example flotation of metal sulphides is carried out in the presence of xanthogenate and cresylic acid.