baber/WOPTO huggingface dataset:
Patent GB-1535064-A (GB)
Title: Method of manufacturing a colour television display tube and tube manufactured according to this method
IPC: H01J9/227
Filed: 1976-10-22
Abstract: 1535064 Colour television tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 22 Oct 1976 [27 Oct 1975] 43946/76 Heading H1D The screen of a shadow-mask colour television tube is manufactured by (a) providing a conductive layer on the faceplate. (b) Providing an electron absorbing layer-which is preferably photovoltaic-on the conductive layer. (c) Scanning the faceplate with an electron beam through the shadow-mask to form a charge pattern on the electron absorbing layer. (d) Developing the charge pattern by spraying with positively charged phosphor particles. After development, remaining charge is removed by exposure to UV and steps (c) and (d) repeated with phosphor particles of a different colour, a black-matrix being formed by performing step (c) with each of the three colour guns, and developing with negatively charged particles of a light-absorbing pigment. A desired phosphor dot size, compared with the mask aperture size, and variation of dot size over the screen of the faceplate, can be achieved by the use of a suitable potential difference between the mask and the screen, which may be a function of the scanning beam instantaneous position; by axial displacement of the scanning coils; and by the use of auxiliary magnetic fields. Apparatus (the Figure, not shown) which includes an evacuable core (1) housing three guns 6, and deflection coils (7 and 9), and arranged to receive a faceplate and shadow mask, is disclosed.
Patent GB-1047736-A (GB)
Title: Improvements in the irrigation of large tracts of land
IPC: A01G25/00
Filed: 1965-10-18
Abstract: 1,047,736. Irrigating land. A. P. PEDRICK. Oct. 18, 1965, No. 44094/65. Heading A1B. Snowballs are fed into a pipeline in the Polar regions and conveyed to a desert region where they are melted to form a lake, the water therein being conveyed into a system of parallel water mains and pumped into the land by a distribution pipe which travels over the land by means of motor driven trolleys which run on top of the parallel water mains.
Patent GB-1063349-A (GB)
Title: Thermoplastic epoxy polymers
IPC: C08G18/58
Filed: 1964-11-03
Abstract: In a process for the manufacture of thermoplastic epoxy resins, by reacting a diglycidyl ether of a dihydric phenol with a substantially equimolar proportion of a dihydric phenol in the presence of a catalyst and a solvent, a prepolymer resin is prepared by carrying out the reaction in the presence of a catalytic proportion of a quaternary ammonium salt and 0.1-3 wt. per cent of difunctional agent is added to the prepolymer solution to increase the average molecular weight of the prepolymer. The difunctional agent may be a di-isocyanate, a di-isothiocyanate or mixture thereof; an acyl halide of a dicarboxylic acid; a dicarboxylic anhydride in the presence of an acidic or basic catalyst; a dialkyl ester of a dicarboxylic acid in the presence of an acidic or basic catalyst; or a pure diglycidyl ether of a diphenol in the presence of an amine or a Lewis acid.  The polymer solutions are useful as coating compositions.ALSO:Steel panels which may be prime coated are coated with solutions of thermoplastic epoxy resins obtained by reacting a diglycidyl ether of a dihydric phenol with a substantially equimolar amount of a dihydric phenol in the presence of a quaternary ammonium salt as a catalyst and of a solvent and modifying the prepolymer so formed with a di-isocyanate to increase the average molecular weight of the prepolymer.  The coated panels are baked to remove the solvent.
Patent GB-947240-A (GB)
Title: Speech synthesizing and transmission systems
IPC: H04B1/66
Filed: 1961-12-14
Abstract: 947,240. Vocoders. WESTERN ELECTRIC CO. Inc. Dec. 14, 1961 [Dec. 27, 1960], No. 44749/61. Heading H4R. In a channel vocoder transmission system a low frequency band, e.g. 250 to 925 cps., of the speech signal is transmitted unchanged together with channel signals representing the energy in each of a plurality of narrow sub-bands together covering the remainder of the speech band, the low frequency band at the receiver is utilized to generate an excitation signal for the higher frequency synthesising channels, the outputs of which are added to the low frequency channel to reproduce the original speech. In the described embodiment the speech band is divided into a low frequency band 250-925 cps. which is transmitted unchanged whilst the band from 925 to 3000 cps. is divided into, say, 15 sub-bands by filters 100a to 100n whose outputs are rectified and filtered and multiplexed, together with the base band from filter 100, on to the transmission channel. At the receiver the base band is rectified in 111 to generate harmonies of the base band, and differentiated in 112 to tend to equalize the amplitudes of the harmonics; this excitation signal is applied to the inputs of filters 113a to 113n, which correspond to the sub-band filters in the analyser, and the output from these filters is infinitely clipped to supply a constant amplitude signal to modulators 115a to 115n where the signal is modulated by the appropriate control signal filtered in band-pass filter 116a to 116n and added to the other sub-band signals and the original base band signal to be reproduced by receiver 12. Specification 937,404 is referred to.
Patent GB-1249377-A (GB)
Title: A magnetic film memory
Inventor: AINSCOW FRANK
IPC: G06G7/19
Filed: 1969-09-11
Abstract: 1,249,377. Magnetic storage apparatus; digital transmission systems. INTERNATIONAL BUSINESS MACHINES CORP. 11 Sept., 1969, No. 44809/69. Addition to 1,199,382. Headings H3B and H4P. An anisotropic thin film memory in which read out of information is effected using oscillatory drive signals and stored information is detected from the phase of the read out signals as described in the parent Specification, is modified by the inclusion of two phase lines. The n+2xN array 10 of anisotropic film elements includes n-bit lines 12 and two phase lines 13, 14, all the magnetic elements associated with one phase line being magnetized in the same direction along the easy axis parallel to word lines 11 and all the elements associated with the other phase line being magnetized in the opposite direction along the easy axis. During a read operation an oscillatory signal of frequency f in the range 10 to 100 MHz is applied to a selected word line 11 so that each magnetic element in the selected word line 11 1 has its magnetization vector oscillated to induce signals of frequency 2f in each of the bit lines 12 and the two phase lines 13, 14, the phase of the signal developed on each line being characteristic of the information stored in the element coupled thereto and are 180 degrees out of phase with each other for binary zero and one. The signal generated on a bit line 12 selected by bit select gate 19 is separately correlated with the two out-of-phase signals generated on the lines 23, 24 at 25, 26 to produce an integral with respect to time of the multiple of the respective voltages of the two signals applied to the respective correlation circuit 25, 26. The outputs from the circuits 25, 26, i.e. positive or negative dependent upon whether the signal from the bit line is in phase or out of phase with the phase line signals, are applied to differential amplifier 29 which produces an output at 22 of one polarity or the other dependent upon the nature of the stored information. The arrangement cancels capacitive noise signals and attenuates random thermal noise signals. Detection circuit, Fig. 2. The bit signal from the selected bit line is applied to terminal 30 and the reference phase signals to terminals 31, 32 respectively. The resultant current flow in transistors T2, T3 is in a ratio depending on the voltage difference between the phase signals supplied to their respective base electrodes and capacitor 34 is charged accordingly. After a predetermined time the charge on capacitor 34 is sampled by switching on gate T6 and transistors T4, T5. Capacitor 34 discharges through transistor T4 or T5 and a pulse appears at the terminals 35, 36 the polarity of which indicates the value of the bit interrogated.
Patent GB-1166048-A (GB)
Title: Method of manufacturing Organic Thermoplastic Filaments
Inventor: CAPDEVILA EUGENIO CALVETE
IPC: D01D5/08
Filed: 1966-10-07
Abstract: 1,166,048. Organic thermoplastic filaments. E. C. CAPDEVILA. 7 Oct., 1966 [16 Oct., 1965], No. 44991/66. Heading B5B. Organic thermoplastic polymer is supplied in a hot molten condition to an extrusion die under pressure from below and the filaments are withdrawn from the die orifices in an upward direction. The polymers may be nylon, polypropylene or polyethylene.
Patent GB-1183907-A (GB)
Title: Photographic Silver Materials and Processes
Inventor: HAIST GRANT MILFORD
IPC: G03C5/305
Filed: 1968-09-27
Abstract: 1,183,907. Photographic silver materials and development processes. EASTMAN KODAK CO. Sept. 27, 1968 [Sept. 28, 1967], No.45959/68. Heading G2C. A negative silver image of increased covering power is obtained by developing an exposed photographic material containing a light-sensitive silver compound in the presence of a dicyanimide of the formula A-N(CN) 2  where A is hydrogen or another atom or a group. The dicyanimide may be present in a silver halide emulsion layer as silver dicyanimide which may partly or completely replace the silver halide as the light-sensitive salt, or it may be present in the silver halide developer as sodium, potasium, lithium or ammonium dicyanimide. Electrically conducting positive silver images are obtained by developing an exposed silver halide material in a developer containing a dicyanimide at a pH of at least 11, a shiny metallic image being formed in the unexposed areas in addition to an ordinary silver image in the exposed areas. A positive silver image is also obtained by a silver salt diffusion process in which an exposed silver halide material is developed with a low-solvent developer containing a dicyanimide but no conventional silver halide solvent such as sodium thiosulphate, and brought into contact with a nuclei-containing receiving sheet. Alternatively a diffusion image is obtained by a process in which an exposed material containing silver dicyanimide as the light-sensitive compound is developed with a lowsolvent developer and contacted with a nucleated receiving sheet. Light-sensitive silver dicyanimide emulsions are made by mixing solutions of sodium dicyanimide and silver nitrate in the presence of gelatine and mixed emulsions of silver dicyanimide and silver halide are made by mixing the pre-prepared emulsions.
Patent GB-1030170-A (GB)
Title: Hydraulic reciprocating motor or pump
Inventor: TOWNING PETER FRANCIS OTTO
IPC: F03C1/38
Filed: 1962-12-05
Abstract: 1,030,170. Reciprocating motors and pumps. KONTAK MANUFACTURING CO. Ltd. Dec. 3, 1963 [Dec. 5, 1962], No. 45974/62. Heading F1A. A fixed displacement, reversible motor or pump comprises a cylinder block 1, Fig. 2, rotatably mounted on a cam shaft 6 and housing spring-loaded pistons 9 engaging a cam 7 through ball-jointed slippers 11, liquid flow between inlet and outlet cam shaft passages 13 and cylinder block passages 14 being controlled by a valve plate 15 secured to the camshaft. A shrunk-on sleeve 4 surrounds cylinder block 1 and is grooved for a V-belt drive. Cam shaft 6 is mounted in a support 8 and may be manually rotated to reverse the direction of flow or rotation.
Patent GB-1293240-A (GB)
Title: A rotary furnace for drying pencil leads
IPC: F26B25/00
Filed: 1970-11-19
Abstract: 1293240 Continuous rotary furnace HASBRO INDUSTRIES Inc 19 Nov 1970 [24 Nov 1969] 46431/71 Heading F4B Pencil leads packed into cylindrical cans are heated to dry the leads in a rotary furnace. The rotary furnace comprises two spaced parallel plates 90 rotating about a common horizontal axis within insulating housings. Discs 96 mounted on the periphery of the plates 90 carry pins to hold cylindrical heating cans 52. Corresponding discs 96 on each plate 90 are driven by a common shaft 100 at a speed greater than that of the plates 90. A number of gears 102, Fig. 3, driving the discs 96 are not engaged by the driving chain 104 so that the discs 96 passing a loading and unloading station formed by omitting some of the removable housing panels are not driven, and the cans 52 may be readily removed from or inserted between the holding pins 98. The furnace is heated by electric elements on the housing rims, and a vent for hot air is provided in each housing.
Patent GB-1033209-A (GB)
Title: Warning-lamp with or without a flashing bulb
IPC: G08B5/38
Filed: 1963-11-25
Abstract: 1,033,209. Electric battery lamps. VARTA PERTRIX-UNION G.m.b.H. Nov. 25, 1963 [Nov. 27, 1962], No. 46524/63. Heading F4R. A portable warning lamp comprises a battery housing 1 which may be of multipart construction having a rotary switch 7 at the top, means for securing the lamp to a button or belt comprising a clip 5 and ring 6 at the rear, a forwardly extending housing 3 of transparent coloured material enclosing the bulb and a coloured reflex reflecting surface 4 mounted below the housing 3. The bulb 2 may be of the flashing type and the housing 3 may be striated to diffuse the light.
Patent GB-1502479-A (GB)
Title: Sealed thermostatic electric resistance heaters
IPC: H05B3/42
Filed: 1975-11-18
Abstract: 1502479 Electric resistance heating MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 18 Nov 1975 [20 Nov 1974 20 Jan 1975] 47561/75 Heading H5H A thermostatic electric resistance heater comprises a heating resistor 2 in Fig. 1, 102 in Fig. 6 in series with an anomaly point (Curie point) P.T.C. thermistor 5, Fig. 1, 105, Fig. 6 the thermistor 5, 105 being held by and between two metallic thermal conductors 4, 4<SP>1</SP>, Fig. 1, 104, 104, Fig. 6, and being within a ceramic tube 1, Fig. 1, 101, Fig. 6, the whole being sealed in a metal tube 6, Fig. 1, 106, Fig. 6. Resistor 2, Fig. 1 may be a helically wound wire or conductive layer on ceramic tube 1. Resilient contacts 10, 3 bias thermistor and heat sinks together. Additional thermistors may be present (Fig. 3, not shown) in parallel with thermistor 5. Alternatively, ceramic disc heating resistor 102, Fig. 6, and thermistor 105 may be sandwiched between three heat sinks 104. Two such units may be connected in parallel and arranged within a longitudinally divided ceramic tube 101 in a sealed metal tube 106. Contacts 103 bias the parts of the heating unit together. Material 13, Fig. 1, 113, Fig. 6, seals the metal tubes 6, 106, and insulating material 7, Fig. 1, 107, Fig. 6 lines the metal tubes.
Patent GB-1065286-A (GB)
Title: Improved smoke cleaner
IPC: B01D53/34
Filed: 1964-11-24
Abstract: 1,065,286. Purifying smoke. R. ONESTI. Nov. 24, 1964 [Nov. 25, 1963; July 27, 1964], No. 47771/64. Heading B1R. Smoke from a furnace 1 is cooled to between 100‹ and 130‹C. in a heat exchanger 3 and washed with water in coke-filled scrubbers 9, the thus cooled and washed smoke being then reheated in the heat exchanger 3 before discharge into a chimney 4 to ensure a natural draught in the chimney. The washing water may be collected, neutralised, filtered and recirculated. The scrubbers may be made of stoneware or plastics material and a temperature responsive control may operate to shutoff the supply of fuel to the furnace if the temperature at the inlet to the scrubbers rises too high. In a modification a stream of air may be heated in the heat exchanger to cool the hot smoke and be mixed with the cooled and washed smoke to reheat it.
Patent GB-1381175-A (GB)
Title: Airmens helmets
IPC: A62B18/04
Filed: 1972-10-23
Abstract: 1381175 Helmet covering M L AVIATION CO Ltd 23 Oct 1973 [23 Oct 1972] 48744/72 Heading A3V An airman's helmet 2 is sealed by a bond 12 having an opening 16 just smaller than the area of the visar 4, and a sleeve 18 covering the lower portion of the helmet and the wearer's neck. The band and sleeve are of rubber. The former may be a loop, or a strip with a fastener 14. The arrangement allows the helmet to be pressurized.
Patent GB-1515160-A (GB)
Title: Electrically integrated circuit package protectors
IPC: H01L23/00
Filed: 1975-11-28
Abstract: 1515160 Integrated circuit protectors PLESSEY CO Ltd 13 Aug 1976 [28 Nov 1975] 48930/75 Heading H2E An electrical integrated circuit package may be protected from damage by static electricity by means of a girdle 11 which, in use, encompasses the package so as to make physical contact therewith and establish electrical connection between soldering tags 6 connected to an integrated circuit chip accommodating a metal-oxide-silicon transistor and situated in spaced recesses 12. As described the girdle 11 may be of aluminium or of an insulating material provided with a continuous band of conductive material.
Patent GB-492762-A (GB)
Abstract: 492,762. Keyboard switches. CLAYTON, T. L. April 1, 1937, Nos. 9276 and 18295. [Class 38 (v)] [Also in Group XXXVIII] In a musical instrument having tubular bells struck by electromagnetically-operated hammers, the playing contacts may be made by plunger keys q which turn (against the action of spring contacts p<3>) conducting levers p so that insulating pegs p<2> and conducting pegs p<1> thereon are respectively brought out of and into contact with conducting levers o which are in contact with spring contacts o<1> connected to the magnets.
Patent GB-1046420-A (GB)
Title: Treatment of dialkyl sulfoxides
IPC: C07C317/00
Filed: 1964-12-08
Abstract: A process of treating dialkyl sulphoxides containing up to 6 carbon atoms to remove impurities, particularly those causing relatively high light absorbence at 270-300 mm  comprises contacting a dialkyl sulphoxide with adsorptive carbon and separating the dialkyl sulphoxide from the carbon after contact and/or saturating dialkyl sulphoxide with an inert gas which will not interfere with the contemplated use of the dialkyl sulphoxide and which will impart to it lower light absorbence between 270-300 mm , when saturated therewith, than is imparted to the same dialkyl sulphoxide by saturation with air, by intimately contacting the dialkyl sulphoxide with the gas, thereby displacing the impurities into the atmosphere. Three main procedures may be adopted as follows:  (a) the dialkyl sulphoxide is contacted with adsorptive carbon, rectified and the remaining portion of the distilland which would increase the 270-300 mm  light absorbence of the distillate if allowed to distil over is separated as residue, (b) as in (a) above but following the separation the distillate is contacted with an inert gas to at least partially saturate the dialkyl sulphoxide and (c) contacting the dialkyl sulphoxide with adsorptive carbon, rectifying the dialkyl sulphoxide while maintaining the pressure below 80 mm. Hg. contacting the dialkyl sulphoxide, during rectification with an inert gas, separating the residue as in (a), relieving the pressure over the distillate to atmospheric and saturating the distillate with the inert gas.  The contacting of the dialkyl sulphoxide with adsorptive carbon may be a multi-stage treatment, the carbon being filtered off at each stage.  If an acid treated adsorptive carbon is used, the dialkyl sulphoxide should be treated with a base, such as an alkali or alkaline earth metal oxide, hydroxide or carbonate during or after the last carbon contact.  In any case the acid impurities should be removed before distillation of the dialkyl sulphoxide.  Dimethyl sulphoxide is preferred whilst suitable inert gases are nitrogen, carbon dioxide, helium, argon, petroleum ether, 1-butene, hydrogen, ethylene, propylene, ammonia and natural gas.  Preferably a small stream of bubbles of the selected gas is introduced directly into the boiling distilland.  In the case of dialkyl sulphoxides which contain odour-imparting impurities, the sulphoxide may be treated to remove such impurities at any time prior to the final rectification by contacting it with an immiscible extraction solvent.  Suitable extraction solvents are petroleum ether, isooctane, hexane, kerosene and gasoline fractions of petroleum, dialkyl ethers preferably with water, aromatic hydrocarbons and halogenated hydrocarbons.
Patent GB-1166340-A (GB)
Title: Process for producing Polyphenylene Ethers
IPC: C07C43/275
Filed: 1967-11-03
Abstract: 1,166,340. Polyphenylene ethers. ASAHI KASEI KOGYO K.K. 3 Nov., 1967 [14 Nov., 1966; 1 Dec., 1966; 27 April, 1967], No. 50179/67. Heading C3R. Polyphenylene ethers are obtained by oxidizing phenols of formula where R is an alkyl group and R<SP>1</SP> is a halogen atom or an alkyl or alkoxy group, with oxygen in the presence of (a) a cobalt chelate compound of formula where Ar is a divalent aromatic residue and R<SP>3</SP> is a divalent residue containing at least two carbon atoms and optionally hetero atoms in its chain, or a compound in which water, oxygen, pyridine or an alcohol is co-ordinated with the cobalt atom of such a cobalt chelate compound, and (b) a chloride or carboxylate of a metal of Group VIII of the Periodic Table or an acetylacetonate of manganese, iron, cobalt, nickel, copper or zinc. Examples are given.
Patent GB-1027370-A (GB)
Title: Improvements in or relating to powder-fed flame spraying torches
IPC: B05B7/20
Filed: 1963-12-19
Abstract: 1,027,370. Spray-producers; flame torches. EUTECTIC WELDING ALLOYS CORPORATION. Dec. 19,1963 [Sept. 17,1963], No. 50237/63. Heading B2F. In a powder-fed flame spraying torch 10, Fig. 1, the powder container 20 is secured to the torch through a connector cup 18, connection between the neck 22 of the container and the cup being effected through interengaging screw threads 32. The coupling between the neck and the cup is so arranged that air is allowed to percolate up through the powder whilst the torch is being used. In the embodiment of Fig. 3 (not shown), air feeding slots 26A and 36A are formed in the neck 22A whilst Fig. 19- also not shown-shows a form via which the slot 26 is present in the threads of the cup 18. Whilst being stored away from the torch the container, which may be of polyethylene, is closed by a plug and cap device FOA, Fig. 5 (not shown). In a modified form the coupling between the neck and the cup comprises a tapered resilient circumferential protruberance on the neck which is a snap-fit within a corresponding annular recess on the cup, the neck being formed with slots 26A and 36A. In yet a further embodiment the container is sealed with a rubber-like plug device 50C having rupturable diaphragms 60C and 58C, Fig. 12 (not shown), the diaphragms being pierced by tubes 66C and 64C, respectively, carried by the cup 18c, Fig. 14 (not shown). The slots 26C and 36C are formed in the neck 22C and the plug 50C, respectively. In the embodiment of Figs. 23 and 27 (not shown) the container 20E and cup 18E are coupled through a bayonet-type connection 84E and 76E. The neck of the container carries a locking ring 86E and the container incorporates an end wall in the form of a bellows. Air percolates to the interior of the container through a dot 70E formed in the cup.