baber/WOPTO huggingface dataset:
Patent GB-391360-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/52
Filed: 1932-08-29
Abstract: 391,360. Cathode-ray tubes. TELEFUNKEN GES. FœR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Aug. 29, 1932, No. 24118. Convention date, Aug. 29, 1931. [Class 39 (i).] In cathode-ray tubes for measuring or television &c. and having a cathode K of such nature that the effective point of electron emission may move due to wear. changes in the focusing action of a concentration electrode W due to such movement are avoided by making the effective origin of the ray an aperture E in a positively biased secondary cathode A<1> surrounding the cathode K. The potentials of the electrode W and of the anode A<2> are estimated assuming that the aperture E is the electron source. The cathode K may be directly or indirectly heated or may be heated by a glow discharge. The edges of the aperture E may be bent in towards the cathode K as shown. The electrode W may be a diaphragm or a Wehnelt cylinder surrounding the electrode A<1>. The ray may be modulated magnetically or electrostatically by grid or plate electrodes, and a grid G may operate between the electrodes K, A<1> so that the speed of the electrons issuing from the aperture E is not varied. Modulation may also be effected by applying the control voltages to either of the electrodes A<1>, W. Concentration of the ray may be assisted by an argon filling. The Specification as open to inspection under Sect. 91 comprises also the omission of the electrode W and concentration of the ray by gas only, also the connection of the electrode A' directly to the cathode K through a source of alternating modulating potentials. This subject-matter does not appear in the Specification as accepted.
Patent GB-894589-A (GB)
Title: Photographic film supports provided with a subbing layer
IPC: C08F8/28
Filed: 1958-07-29
Abstract: 894,589. Photographic film supports with subbing layers. AGFA A.G. July 29, 1958 [July 29, 1957], No. 24413/58. Class 98(2). A support produced from a high molecular weight polyalkyleneterephthalate is provided with a subbing layer comprising a mixed acetal of a polyvinyl alcohol with an aldehyde containing at least one water-solubilising group and an aldehyde without a watersolubilising group, the acetal being soluble in organic solvent and being capable of swelling in water. Adhesion of a subsequently coated silver halide emulsion layer to the support is thereby attained. In Example 1 a foil formed from a condensation product of terephthalic acid and glycol is dipped in a solution of the acetal from polyvinyl alcohol and benzaldehyde-2,4-disulphonic acid together with benzaldehyde itself, and which contains free polyvinyl alcohol, using a solvent mixture of methanol, phenol and methylene chloride, dried and then cast with the emulsion which latter adheres satisfactorily both dry and when wet. In Example 2 benzaldehyde-2-monosulphonic acid replaces the disulphonic acid, a vinyl chloride, hydroxide and acetate copolymer is included in the solution, and the solvent is methanol, aniline and trichlorethylene; and in Example 3 the mixed acetal is formed from butyraldehyde sulphonate and tolyl aldehyde, a styrene and allyl alcohol copolymer is included therewith and methanol and acetone with trichloracetic acid is used as solvent. Other copolymers for use together with the mixed acetals and other liquids to form the solvents, which are designed to swell the foils superficially, are listed. Specifications 522,161, 688,528, 700,957, 718,422, 726,736, 727,705, 739,477 and 782,165 are referred to.
Patent GB-959182-A (GB)
Title: A process of preventing darkening and the formation of precipitates in photographic developers
IPC: C07D285/135
Filed: 1961-07-27
Abstract: 959,182. Stabilisers for photographic developers. AGFA A.G. July 27, 1961 [July 27, 1960], No. 24439/63. Divided out of 940,169. Heading G2C. Photographic developers are stabilized by adding derivative of 2-mercahto-1, 3, 4-thiodiazole of formula: wherein X is sulphur or a-NH-radical and R is an alkylene radical of 4-10 carbon atoms, cycloalkylene, arylene or aralkylene radical or one of these radicals substituted by halogen. alkoxy or alkyl radicals. Compounds used in the examples are those wherein X is sulphur and R is hexylene, octylene or paraxylylene or X is -NH and R is hexylene. The compounds are preferably added to developers used in the silver salt diffusion process. The developer may contain a silver halide solvent e.g. sodium, potassium, calcium or ammonium thiosulphate. Specification 942,822 also is referred to.
Patent GB-1494800-A (GB)
Title: Moulding articles of glassfibre reinforced cement materials
IPC: B28B19/00
Filed: 1976-08-03
Abstract: 1494800 Moulding cement THYSSEN (GREAT BRITAIN) Ltd 3 Aug 1976 [6 June 1975] 24454/75 Heading B5A An epoxy-coated, glass-fibre reinforced cement article is produced by coating a mould with a release agent; applying to the mould a bis-phenol A type resin/hardener mix which will react together despite the presence of any water and applying glass-fibre reinforced cement as a wet mix before the resin hardener is set.
Patent GB-1471884-A (GB)
Title: Foot operated air pumps
IPC: F04B33/00
Filed: 1974-08-06
Abstract: 1471884 Foot operated air pumps D J WALTERS 6 Aug 1974 [22 May 1973] 24456/73 Heading F1N The piston and cylinder assembly 10 of a foot pump has the cylinder thereof provided with lugs 14 snap fitted on to a cross-shaft 16 of the pump's treadle 20 on to a pivotable reaction pin 24 of the pump's base member 28. In the embodiment  shown, the piston-rod 22 of the assembly 10 has a threaded end which passes through a transverse hole in the reaction pin 24 for securement by nut or nuts 23. Alternatively the end of the rod 22 may be fitted with a synthetic plastics lug arranged to snap on to the pin 24 like the lugs 14. The cylinder end-wall 12 and the lugs 14 are an integral moulding, the end-wall 12 being integral with, or separate from, the cylinder body. A handle may be provided for attachment to the piston-rod 22 after the assembly has been removed from the base and treadle, thereby to convert the pump to hand operation. The reaction pin 24 may itself constitute a handle by making it a snap fit in the base 28. A torsion spring or a spring within the cylinder urges the treadle away from the base.
Patent GB-445010-A (GB)
Title: An improved electric flat-iron
IPC: D06F75/26
Filed: 1935-09-02
Abstract: 445,010. Mercury switches for electric irons. FLETTING, H. K., 86, Ohlenschlõgersgade, Copenhagen. Sept. 2, 1935, No. 24473. Convention date, Sept. 1, 1934. [Class 38 (v)] [See also Group XI] A mercury cir cuit - breaker j, enclosed in ar evacuated or nit rogen - filled glass tube l is arranged in the lead from one of the contact pins h to the heat. ing resistance a of an electric iror so that when the iron is in the horizontal or operative position the circuit is completed, but when the iron is stood up on end the mercury runs to the upper end of the tube and breaks the circuit. In the event of the iron overheating while in use the tube explodes and the circuit is broken. The tube is housed in a metal casing m secured to the iron cover f, glass wool p and fibre washers o forming cushions. Air holes are provided at the top of the casing and holes s in the cover f allow the mercury to escape when the tube explodes.
Patent GB-1157720-A (GB)
Title: Tubular Ozonisers
Inventor: GUILLERD JEAN
IPC: C01B13/11
Filed: 1968-05-22
Abstract: 1,157,720. Ozonizers. COMPAGNIE DES EAUX ET DE L'OZONE. 22 May, 1968 [22 May, 1967], No. 24485/68. Heading H5H. In order to utilize both surfaces of a tubular high tension electrode 2 for electric discharge it is arranged coaxially between an inner dielectric tube 3 and an outer dielectric tube 4 which are cooled by an earthed conducting fluid, e.g. water, which is connected to earth and forms the earth electrode. The dielectric tubes are made of glass the inner one 3 being cooled by water flowing from inlet 11, pipe 12, chamber 9, up the tube 3 and down through an inner overflow pipe 13 to a chamber 14 and outlet 16. Outer tube 4 is cooled by water flowing from inlet 11 and pipe 12, between the outside of tube 4 and earthed casing 1 to outlet 23. Gas to be ozonized passes through pipe 26 to chamber 24 and then via apertures 31b, 32a to opposite sides of the high tension electrode 3 and out by way of chamber 27 and pipe 28. The electrode 3 is centred by screws 29 and electrically connected to terminal 34 by a cross-piece 33, socket 39, spring contacts 36, push-button 37, fuse 38, fuse carrier 40 and metal plate 35. In Fig. 2 (not shown) the dielectric tubes are joined at the bottom and air passes between electrode 2 and outer tube 4 and then between electrode 2 and inner tube 3. As shown in Fig. 1 two discharge devices are mounted in casing 1.
Patent GB-459282-A (GB)
Title: Clutch and drive mechanism
IPC: B60K17/02
Filed: 1936-09-09
Abstract: 459,282. Friction couplings or clutches; breaking - pieces for relieving strain; locking nuts. HARDY, SPICER, & CO., Ltd., Birch Road, Witton, Birmingham.- (Spicer, C. W. ; Toledo, Lucas, Ohio, U.S.A.) Sept. 9, 1936, No. 24581. [Classes 80 (ii) and 80 (iv)] [See also Group XXV] In a friction coupling or clutch which slips on overload, the driven (or driving) disc 63 is connected to its hub 57 by rivets 66 made of a metal or alloy of a comparatively low melting point, such as zinc combined with small proportions of tin, copper, or aluminium, so that, while the rivets exhibit sufficiently high resistance to shear at normal temperatures, they soften and shear when the temperature rises, due to prolonged slipping, to a predetermined amount. In the coupling shown, the hub 57 is splined on a sleeve 51 which is journalled, through a ball bearing 16, in a housing 11 driven from an axle of a railway vehicle through universal joints, and which is secured by a key 91 and nut 94 on the conical end of the shaft 83 of an electric generator or other auxiliary unit mounted on the vehicle. The disc 63 is gripped between facings of low heat-conductivity carried by the end cover 71 of the housing 11 and a spring-loaded pressure plate 31 slidable in the housing. The coupling is completely enclosed, sealing devices 29, 77 being provided, so as to confine the heat generated. The presser plate 31 may be retracted, so as to free the disc 63, by screwing nuts 42 on bolts 38 which are secured to the plate and which pass through the end wall 13 of the housing. In the case of a clutch, however, the plate 31 may be retracted by manually-controlled means acting on the bolts 38. In a modified form, the cover 71 is at the right-hand end of the housing, whereby replacement of the driven disc is facilitated. The nut 94 is locked by means of a screw 103 threaded into the nut, a split spring ring 101 being interposed between the end of the screw and the rounded end of the shaft 83.
Patent GB-793381-A (GB)
Title: A method and a device for producing bituminous mixtures for a road construction
IPC: E01C19/10
Filed: 1955-08-26
Abstract: <PICT:0793381/III/1> Stone material is bituminized by passing from a hopper 2 on to an electrostatically vibrated belt conveyer 7 (which forms the collecting electrode) past spray nozzles 8, 9 and 10 (which form atomizer electrodes) fed from tanks 81, 91 and 101 containing bitumin of increasing concentration. Synthetic resin or rubber solutions may be used in place of some of the bituminous solutions, especially as the most dilute solution.  When the stone material is classified into sizes, solutions of different concentrations are applied to the different sizes, the whole being mixed before discharge into containers.
Patent GB-1074493-A (GB)
Title: Novel estrane derivatives and processes for preparing them
IPC: A61K31/567
Filed: 1964-06-12
Abstract: The invention comprises 11b ,17b -dihydroxy-estra-1,3,5(10) -triene derivatives of the formula <FORM:1074493/C2/1> wherein R represents a hydrogen atom, an acyl group being the residue of a carboxylic organic acid, or an alkyl radical and a process for the preparation thereof in which 3,11b -dihydroxy-estra-1,3,5(10) -triene-17-one is subjected to the action of an ethynylating agent, e.g. ethynyl magnesium chloride or potassium acetylide, so as to form 17a -ethynyl-3,11b ,17b -trihydroxy-estra-1,3,5(10) - triene. Alternatively 11b ,17b  - dihydroxy - 17a  - ethynyl - androsta - 1,4 - dien - 3-one is submitted to heating at a temperature above 450 DEG C. so as to form 3,11b ,17b -tri-hydroxy - 17a  - ethynyl - estra - 1,3,5(10) - triene. The 3-hydroxy compounds so obtained may be alkylated or acylated to form the corresponding 3-alkoxy or 3-acyloxy compounds.  Pharmaceutical compositions having estrogenic activity and containing the above compounds are administered orally as tablets, pills, sublingual tablets, capsules, cachets, powders, syrups, and elixirs, by injection in solution or suspension or rectally as a suppository.
Patent GB-246359-A (GB)
Abstract: 246,359. Carpmael, A., (Telefunken Ges. fur Drahtlose Telegraphie). May 4, 1925. Inductances. - The cores of inductance coils for use in telegraphy and telephony by highfrequency oscillations are formed of wire of a nickel-iron alloy and having a diameter of less than <1>/10 mm. The alloy used preferably contains about 80 per cent nickel and 20 per cent iron.
Patent GB-237766-A (GB)
Title: Improvements in or relating to cones, tubes or bobbins for yarn winding machinery
IPC: B65H75/18
Filed: 1924-10-17
Abstract: 237,766. Brough, Nicholson, & Hall, Ltd., and Fowler, J. Oct. 17, 1024. Tubes or bobbins. - A coating or covering 5 of resilient material such as india-rubber is provided for cones, tubes, or bobbins used for artificial silk in knitting and like machines. The bottom part may be roughened as at 6 or provided with circumferential grooves. The cover is pulled over the cone and may be secured at the bot. tom by a cord or thread, or by adhesive.
Patent GB-806270-A (GB)
Title: Improvements in and relating to electrical switch assemblies
IPC: H01H13/04
Filed: 1956-08-13
Abstract: 806,270. Couplings. UNITED-CARR FASTENER CORPORATION. Aug. 13, 1956 [Aug. 29, 1955], No. 24763/56. Class 38 (1). Terminals 22 of a switch are protected by an insulating sleeve 28, preferably of resilient, transparent, plastic, assembled on to one end of the switch housing 16, lead wires 26 being connected to terminals 22 by snap-on connectors 24.
Patent GB-1468423-A (GB)
Title: Liquid crystal display
IPC: G02F1/139
Filed: 1974-06-05
Abstract: 1468423 Controlling light INTERNATIONAL BUSINESS MACHINES CORP 5 June 1974 [29 June 1973] 24808/74 Heading G2F In a multi-segment display, a layer 20 or 20A of nematic liquid crystal material and electrodes 10-19, 10A 15A, are disposed between insulating  layers 6A, 7A overlaid with continuous electrode layers 4A, 5A, and the electrodes are selectively energized in a manner such as to locally align the layer 20A so that it appears either isotropic or birefringent to an incident light beam 26. As particularly described, the nematic material has positive dielectric anisotropy, and the application of 10-30V at 10kHz from a source 8 between electrodes 4A and 5A with electrodes 15A and 10A isolated causes the nematic molecules to align with the field and optical path directions and to appear isotropic to the beam 26. If in addition, a source 9 applies 5-20V at 100Hz between electrodes 10A and 15A, the effect of the field predominates over that between 4A and 5A, and the nematic molecules align transversely to the optical path, and the layer appear birefringent to the beam 26. Crossed polarizers 24A and 25A distinguish between the two states of layer 20A. In a second embodiment, Figs. 5-7 (not shown), polarizer 24A is followed by a #/4 plate and also acts as an analyzer, the analyser 25A being replaced by a chromium film, for viewing by reflected light. Fig. 3 is an exploded view of part of the display which is actually a multilayer sandwich construction additionally comprising glass support plates. The segmented electrodes 10-19 do not necessarily extend across the entire thickness of layer 20.
Patent GB-518535-A (GB)
Title: Air silencers for the carburettors of internal-combustion engines
IPC: F02M35/14
Filed: 1938-08-25
Abstract: 518,535. Silencing gaseous currents. HEALEY, D. M. Aug. 25, 1938, No. 24970. [Class 7 (ii)] A silencer for the air intake of carburetters comprises a casing 2 having an axial outlet pipe 5 at one end and an inlet pipe 6 at the other end arranged along a diameter of the casing and provided with a baffle at one side, which may be obtained by sloping off the end of the pipe, so as to direct the air in a rotational manner away from that side. A filter medium 8 of steel wool &c. may be fitted within the casing. The casing may be composed of two halves held together by bolts 4, or it may be made up of a cylindrical portion with end caps. The inlet pipe may be adjustable rotationally and endwise.
Patent GB-600823-A (GB)
Title: Improvements in or relating to acetylene generators
IPC: C10H15/06
Filed: 1944-12-13
Abstract: An acetylene generator has the diaphragm-controlled feed valve adapted to be vibrated to ensure uniform feeding of carbide to a generating tank 10 by means of a vibratable diaphragm activated by pulsating gas pressure from a point within or in free communication with a liquid trap flash-back arrester pertaining to the generator. Advantageously, one side of the vibratable diaphragm is responsive to the pressure of gas generated in the tank and the other side to pulsating pressure conveyed thereto by a conduit from a gas space of capacity relatively small compared with that of the generator disposed above the level of the trap liquid in a liquid trap flash-back arrester.  In the forms of the invention illustrated (Figs. 1, 2 and 3), the pulsating pressure is provided by the action of check valve(s) 166, 182, one of which may be an interrupter valve. In each form, valve heads 66, 68 mounted on a stem 64 are vibrated by the action of a diaphragm 82 which in the forms shown in Figs. 1, 3 causes a longitudinal vibration, while that shown in Fig. 2 causes a lateral vibration of the valve, with respect to the stem.  The diaphragm feed control is of the type, such that one side of the diaphragm 44 is responsive to the pressure of the gas generated in the tank, thereby controlling the position of the feed valve member 68 and so regulating the pressure of the generated gas.  There are also provided adjustable means, such as a spring 38 for yieldably applying force to the diaphragm to predetermine the pressure at which this control operates and also to shut off further feeding of carbide following abnormal loss of gas pressure by moving the second valve member 66 to a closed position, though for normal operation the valve stem connected to the diaphragm and carrying the two valve members in spaced relation moves so <PICT:0600823/IV(b)/1> <PICT:0600823/IV(b)/2> <PICT:0600823/IV(b)/3> as to leave a free feeding space.  A safety screw or like device 76 extends into the pressure zone and has positive, operative connection with the carbide feed valve for locking the valve in a closed position.  It may be housed in a pressure-sealing bellows 80.
Patent GB-150699-A (GB)
Title: Water level indicator instrument
IPC: G01F23/16
Filed: 1920-08-30
Abstract: 150,699. Pneumercator Co., (Assignees of Parks, H. S.). Aug. 28, 1919, [Convention date]. Indicators actuated by pressureof head of liquid.-The water level in a steam boiler or the like is indicated at a distance as described in Specification 114,857 by means of a differential pressure indicator connected to the boiler by pipe lines 17, 18 fitted with three-way cocks 15, 16 having drains 19, 20 and so arranged at. the boiler end that the pressure in the pipe 17 equals the steam pressure plus the actual head of water in the boiler, and in the pipe 18, which is maintained full of water up to a certain level, equals the steam pressure plus this constant head. The gauge consists of a glass tube 4 closed at the top- and surrounding a second glass tube 5 open at both ends; it is contained in a case 1, with a transparent front 3. The present invention is distinguished by the interposition between the gauge- and pipe lines of a reservoir 10 fitted with a drain cock 30. The inner tube is connected to the cock 15 and is isolated from the chamber by a tube 21, a tube 28 of a certain height, which may be telescopic, being connected to the cock 16 so that the volumes of air entrapped in the chamber 10 may be brought to a certain value before putting the gauge tubes into communication with the boiler. Two scales are arranged at the sides of the gauge, one 6 being fixed while the other 8 is adjustable and fitted with a zero reading preferably arranged to coincide with the level in one of the tubes when the level in the boiler is normal. The gauge may be constructed in a #-form if desired, and a float may be arranged in the inner tube.
Patent GB-1006243-A (GB)
Title: Electric solid-state devices and circuits, and method of manufacture thereof
IPC: H01L27/118
Filed: 1962-06-29
Abstract: 1,006,243. Semi-conductor devices. SPERRY RAND CORPORATION. June 29, 1962 [July 10, 1961], No. 25038/62. Heading H1K. In making a solid state circuit, a single slice of semi-conductive material of one conductivity type is divided, by diffusion of impurities, into a first layer 2 of unchanged material and a second layer 3 of opposite conductivity type to the first. In addition, similar impurities are diffused into the slice along planes 4, perpendicular to the major surfaces, so that the entire slice is divided into a number of mutually isolated regions, such as 6, adjacent regions being separated by, in effect, a pair of oppositely connected rectifying junctions. The upper surfaces of these regions may now be subjected to further masking and diffusion of appropriate impurities to produce zones e.g. 15, 18, 19 of conductivity type opposite to that of the region 2 and which may be used as resistors or, in conjunction with the zone 2, as rectifiers. Further, the conductivity type of a central zone in each case, e.g. 23, 24, may be again reversed by a third masking and diffusing step to form transistors as 8, 9. Ohmic contacts, e.g.. 32, 33, 34; 37, 39 are then alloyed to the appropriate points on the surface of the slice and desired connections, e.g. 42, 45, are made by vapour deposition of metal over an insulating layer. The lower surface of the device is coated with a thin film of gold, by means of which it is alloyed to a metallic header, thereby giving good heat dissipation, and external connections are made from appropriate contacts on the surface of the device to connecting pins on the header. Contacts 54, 55 are provided for the application of a bias to the resistor elements, in order to prevent passage of current along unwanted paths. The processes of masking and diffusion lend themselves to mass production techniques and a large number of these assemblies may be made in a single large slice of crystal, being subsequently separated by breaking or etching.
Patent GB-251268-A (GB)
Abstract: 251,268. Goldschmidt Akt.-Ges., T. April 23, 1925, [Convention date]. Alloys. - Valuable metals are recovered from slags, alloys, and other materials containing them in admixture with ferro-silicon, by adding to the molten materials metals, or readily reducible compounds such as lead oxide, adapted to take up or alloy with the metals to be recovered. For example, tin may be recovered by means of one or more of the metals lead, bismuth, cadmium, and thallium, or a lead-tin alloy. The Specification, as open to inspection under Sect. 91 (3) (a) refers also to the recovery of molybdenum and tungsten by the process. This subject-matter does not appear in the Specification as 'accepted.