baber/WOPTO huggingface dataset:
Patent GB-700277-A (GB)
Title: Improvements in or relating to circuit-arrangements for use in television receivers
IPC: H04N5/16
Filed: 1952-03-19
Abstract: 700,277. Television receivers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 19, 1952 [March 22, 1951], No. 7100/52. Class 40 (3) The direct-current component is reinserted both at the cathode-ray tube and at the grid of the amplifier preceding the tube. In Fig. 1, the video signal Vi is amplified in tube B1, and a first output is applied to the cathode-ray tube B3 through coupling circuit C3, R7. A second output is applied to a peak detector B2 through coupling circuit C2, R3 whereby the D.C. component of the amplified signal is developed across the load circuit C4, R4, R5. The time constant C4(R4+R5) is selected to be about two to ten times the duration of a line signal. After further smoothing in circuit C5, R6 the D.C. component is then applied to the control-grid of the C.R. tube. A reduced voltage is also taken from across resistor R5 and applied in series with the negative bias E1 to the grid of tube B1. The bias E1 is selected so that, in the absence of a signal, tube B1 is just conductive, and the ratio R4+R5/R5 is selected to be equal to the amplification due to tube B1, whereby the D.C. voltage inserted in series with bias E1 equals the amplitude of the video signal V1. By this means, the D.C. component is reinserted at the grid of tube B1 with the peaks of the synchronizing signals maintained substantially coincident wth the cutoff point of the tube. Interfering signals exceeding the synchronizing signals are limited to the amplitude of the synchronizing signals.
Patent GB-849783-A (GB)
Title: Manufacture of steel
Inventor: CHURCHER THOMAS CHRISTOPHER
IPC: C21B5/00
Filed: 1958-03-06
Abstract: 849,783. Refining iron. BRITISH OXYGEN RESEARCH & DEVELOPMENT Ltd. Feb. 20, 1959 [March 6, 1958], No. 7196/58. Class 72 Molten iron from a blast furnace and/ or cupola is allowed to fall through a reaction zone in contact with an oxidizing gas in admixture with steam, the metal being converted to steel in a steel making furnace, the gases leaving the reaction zone being fed to the lower part of the blast furnace or cupola, and hot waste gases from the steel making furnace being used to raise said steam. As shown, metal from blast furnace 1 or cupola 2 is led by conduits 4 and 5 to mixer 3 from which it may be transferred intermittently or continuously via conduit 6 to refractory lined reaction tower 7 which may be empty or filled with a packing material such as limestone and fluxing agents, and located above the steel making furnace 12. Oxygen or an oxygen containing gas, which may contain powdered fluxing agents may be injected near the top or bottom of column 7 by pairs of tuyeres set diametrically opposite each other, and fume laden waste gas is led via conduits 10 and/or 11 into the blast furnace or cupola. Column 7 may be preheated by the combustion therein of a liquid or gaseous fuel with oxygen, the gaseous products being fed to the hot blast line of the blast furnace or cupola. Metal leaves column 7 and flows into the steel making furnace 12 which may be an open hearth furnace, an electric furnace, or a converter, while heat in the waste gas from the steel making furnace is used to raise stem at 14 which is fed by a conduit 9 to column 7. In an alternative arrangement (Fig. 2, not shown), iron flows directly from the blast furnace or cupola into the reaction column from which it is collected in a ladle which conveys it to the steel making furnace. Specifications 781,116, 790,790, 817,783 and 835,159 are referred to.
Patent GB-1354255-A (GB)
Title: Handrail drive for personnel transport devices
IPC: B66B23/04
Filed: 1972-02-16
Abstract: 1354255 Escalator handrail INVENTIO AG 16 Feb 1972 [24 Feb 1971] 7207/72 Heading B8A [Also in Division F2] A handrail drive for an escalator or like passenger conveyer comprises an endless flexible handrail provided with teeth which are engaged by entrainment means positively interconnecting, and transmitting the drive simultaneously to, the advancing and return runs of the handrail, the entrainment means being displaceable to increase the play between deflecting means supporting the handrail at a deflecting location and the arcuate portion of the handrail at the deflecting location. In the Figure, toothed handrail 11 has advancing and return runs which are engaged at several (e.g. 3) points along the handrail by entrainment means 14 comprising a double toothed endless belt 15 trained round tensioning rolls 16, drive gear 21 and deflecting gears 22, all supported by plate 20. Drive gear 21 is driven via sprocket 23 and chain 18 by the drive means for the escalator itself.
Patent GB-1305921-A (GB)
IPC: C09D175/08
Filed: 1970-02-16
Abstract: 1305921 Synthetic resins DR BECK & CO AG 16 Feb 1970 [14 Feb 1969] 7270/70 Headings C3P and C3R Solvent free isooyanate reaction resins are prepared by reacting, in the absence of water, a polyether having an equivalent weight of 60 to 2000 and a functionality of 2 to 6, a thixotropic agent, a compound which accelerates the reaction between OH and NCO groups, a polyisocyanate, a homopolymerizable and/or copolymerizable monomeric compound having a b.p. of 120‹ to 200‹ C., a polymerization initiator and a polymerization accelerator for the monomeric compound. Fillers, pigments, compounds increasing the electrical conductivity of the resin, compounds to remove traces of water and fireproofing agents may be included in the reaction mixture. Suitably the polyether has an equivalent weight of 100 to 500 and a functionality of 3 or 4. The thixotropic agent is preferably a high-dispersal silicic acid. The homo- or copolymerizable monomer may be a vinyl aromatic compound, e.g. styrene, a vinyl ester, e.g. vinyl esters of C 9-11  acids with a methyl branch at the α-carbon atom, acrylic esters, e.g hydroxypropyl acrylate and allyl esters. Conventional polyisocyanates are used. Organic peroxides from the ketone-peroxide, per-acid and per-ester groups are the preferred compounds to initiate polymerization. In a typical example a mixture is formed from a highdispersal silicic acid, a branched polyether, red iron oxide, dolomite, a zeolite, dimethyl-aniline, styrene, dibutyltindilaurate and a compound to adjust the conductivity and this mixture is mixed with a mixture comprising a commercial diphenylmethane diisocyanate mixture and dibenzoyl peroxide. The resins produced are capable of being electrostatically sprayed to form coatings.
Patent GB-885719-A (GB)
Title: Anion exchanger with sponge structure
IPC: B01J41/14
Filed: 1958-03-06
Abstract: 885,719. Making porous ion-exchange resins. FARBENFABRIKEN BAYER A.G. March 6, 1958 [March 9, 1957], No. 7297/58. Class 87(2). [Also in Group IV(a)] Anion-exchange resins having a sponge structure are obtained by haloalkylating and then aminating the cross-linked polymer obtained by copolymerising an aromatic mono-vinyl compound with a polyethylinically unsaturated compound in the presence of at least 20% of an organic liquid which is a non-solvent for linear aromatic vinyl polymers but a solvent for the monomers. The porosity of the polymer depends on the proportion of organic liquid employed. In an example porous polymers were obtained from styrene, ethylstyrene, and divinylstyrene by emulsion polymerization using white spirit as pore forming liquid. This liquid was removed by drying from the resulting bead polymer which was then haloalkylated and aminated. In a further example a polymer was prepared from vinyl toluene and ethylene glycol dimetheacylic acid ester with n-decanol as the pore former. Specifications 654,706, 679,851, 679,852, 700,740, 779,994 and 885,720 are referred to.
Patent GB-828904-A (GB)
Title: Fungicidal compositions
Filed: 1956-03-08
Abstract: 1-Chloro-2,4-dinitro-naphthalene is prepared by treating Martius Yellow or 2,4-dinitro-naphthol with p-toluene-sulphochloride in the presence of dimethyl aniline.ALSO:A fungicidal composition comprises 1-chloro-2,4-dinitro-naphthalene and as a carrier an inert solid diluent, e.g. talc, or an oil emulsion.
Patent GB-357070-A (GB)
Title: A device for facilitating the lifting of aeroplanes or the placing and securng of them on a transporting device
IPC: B64F1/22
Filed: 1931-03-10
Abstract: 357,070. Hand-trucks. VENEZIAN, C. C., 40, Via Piffetti, Turin, Italy. March 10, 1931, No. 7384. Convention date, March 10, 1930. [Class 108 (i).] A support 14 on a truck 15 is adapted to engage a bar 9 secured to the main framework of an aeroplane fuselage.
Patent GB-976772-A (GB)
Title: Dictating machine
IPC: G11B25/06
Filed: 1963-02-25
Abstract: 976, 772. Belt recorders. DICTAPHONE CORPORATION. Feb. 25, 1963 [March 5, 1962], No. 7469/63. Heading G5R. The recording 188 and playback 170 styli of a portable dictating machine, as otherwise detailed in Specification 936,786, bear on one of the mandrels 64, acting as an anvil, variable depth of cut on recording due to mandrel eccentricity being compensated on playback by arranging for the belt to have exactly three times the circumference of that of the mandrel 64. The companion office machine detailed in Specification 910,739 is referred to.
Patent GB-1103806-A (GB)
Title: Process for the stabilization of developed light-sensitive materials
IPC: G03C5/26
Filed: 1966-02-21
Abstract: 1,103,806. Photographic stabilizing process. FUJI SHASHIN FILM KABUSHIKI KAISHA. Feb. 21, 1966 [Feb. 24, 1965], No.7540/66. Heading G2C. Developed silver halide materials are stabilized and then subjected to washing for less than 60 secs. Stabilization is the conversion of the unexposed silver halide to a light-stable complex which remains in the material. The material may be stabilized in a bath of urea or a thiocyanate, and washed by a water spray or bath. Aqueous washing liquids may contain a fluorescent bleaching agent, a U.V. absorber, a wetting agent, or a hardening agent e. g. potassium alum, chromium alum acetic acid or formalin.
Patent GB-767818-A (GB)
Title: Improvements in, or relating to door or like catches
Inventor: EGAN HORACE BERTRAM JAMES
IPC: E05C3/14
Filed: 1953-03-19
Abstract: 767,818. Latches. ESSOR MANUFACTURING CO., Ltd. March 19, 1954 [March 19, 1953], No. 7570/53. Class 44. A gravity-actuated latch has a catch piece 6 pivotally mounted about a transverse axis on a plate 1 by means of a pillar 5 having an upturned end 7 entering a recess 13 in the catch piece, the transverse axis being located between the centre of gravity of the catch piece and a finger piece 9 which is provided at one end, the other end having at least one lateral projection 8 engageable with a keeper plate 3. The projection 8 may extend on both sides of the catch piece 6 and is formed with a convex face 8a, of a radius not less than the greatest dimension of the cross-section, which rides over a corresponding convex nose 11 on the keeper plate 2. Shoulders 12 at the base of pillar 5 limit the angular movement of the catch piece 6.
Patent GB-350527-A (GB)
Title: An improved internal combustion rotary engine
IPC: F02B53/00
Filed: 1930-03-08
Abstract: 350,527. Rotary engines. HAYDOCK, J., Dunsley, Four Lanes End, Blackburn, and SHORROCK, C., Thornfield, Garstang Road, Preston. March 8, 1930, No. 7597. [Class 110 (ii).] Fixed-abutment type ; materials special.-In an internal-combustion engine in which axiallysliding vanes i are guided over the face of a stationary cam g<1> which is shaped with two high parts and two low parts to give piston movements for a four-stroke cycle, and which is provided with inlet and exhaust ports in the face of the cam, cooling air flows through ports a<6>, l<2>, to chambers l in the rotor, and leaves by way of ports a<5> to an annular chamber a<4>. Ribs containing the vanes i act as fan blades for the cooling air. The vanes move in slots in a rotor h<1> and are pressed against the cam face by springs k located in recesses in a back-plate h which presses against a thrust bearing j. The slots extend from an axial groove m in the hub of the rotor to an axial groove n in the ring h<2> of phosphor bronze which is shrunk on to the casing periphery. The casing is made of aluminium. Antifriction rollers h<4> are provided to take centrifugal thrust of the vanes. Ignition of the fuel is obtained initially by a plug and afterwards by means of hot gas contained in the plug socket. An alternative method is to provide a passage in the cam leading hot gas from one chamber to the chamber following. The combustion spaces may be duplicated on either side of the rotor and the spring pressure may be varied or kept constant by the bottoms of the springs being guided by a second cam. The Provisional Specification states that water can replace air for cooling purposes. The air passing to chamber a<4> may be used in the engine in a preheated and compressed condition. Dogs e<2> are clutched to a starting handle, and the engine drives a chain sprocket el. Specification 325,626, [Class 110 (ii), Rotary engines &c.], is referred to.
Patent GB-1237491-A (GB)
Title: Gunn-effect devices
IPC: H01L47/00
Filed: 1969-02-12
Abstract: 1,237,491. Semi-conductor devices. RCA CORPORATION. 12 Feb., 1969 [23 Feb., 1968], No. 7609/69. Heading H1K. In a Gunn effect device formed in an epitaxial semi-conductor layer on a high resistivity semiconductor substrate the ohmic electrodes 14a defining the active gap 12 of the device are narrower than the epitaxial layer so that spaces 16 are provided between the lateral edges of the electrodes 14a and those of the epitaxial layer. The surface of the epitaxial layer not covered by the electrodes 14a is preferably covered by an insulating layer, e.g. of SiO 2 on a GaAs device. The electrodes 14a may be of Ag/Ge/In or Au/Ge/Ni alloyed into the epitaxial layer. Ag wires 17, 18 are soldered to the electrodes 14a. Many such devices may be formed in a single slice of GaAs, which is subdivided by sawing across the centres of ohmic electrode pads (14), Fig. 2 (not shown), and along the centres of lateral gaps (10) between the pads (14). The method for defining the pads (14) comprises evaporating the metal over a photoresist mask which has previously been used to define apertures in the SiO 2  layer, and then alloying the metal into the epitaxial layer within the apertures. The alloying temperature is sufficiently high to carbonize the remaining photoresist, causing the unwanted metal to flake off. Any metal still remaining on the SiO 2  layer is then removed by a conventional photoresist etching step, only part of the SiO 2  overlying the active gap 12 being exposed by the photoresist mask to prevent undesirable undercutting during etching.
Patent GB-767075-A (GB)
Title: Improved fluid pressure power steering mechanisms for motor vehicles
IPC: B62D5/24
Filed: 1955-03-16
Abstract: 767,075. Vehicle power steering. GENERAL MOTORS CORPORATION. March 16, 1955 [May 21, 1954], No. 7652/55. Class 79(5). [Also in Group XXIV] A fluid pressure power steering mechanism for motor vehicles includes a control valve 60 having a ported casing and a valve spool mounted on the steering shaft 66 and movable axially therewith a limited amount consequent on manual steering effort, the ported casing being attached to a steering box 10 which includes rock shafts 16, 18 carrying mating gears 12, 14 and extending through opposite sides of the box, and a piston and cylinder servomotor 40, 42 connected to the gear 14. As shown a worm 72 on the steering shaft 66 actuates a nut 74 having rack teeth meshing with the gear 12, the shafts 16, 18 carrying arms 20, 22 each connected by a drag link (not shown) to a separate steerable wheel (not shown). Each shaft 16, 18 is supported in bearings 28, 38 in the steering box 10 having means 24, 25 for mounting on the vehicle and the teeth on the gears 12, 14 are of bevel form thus thrusting the shafts 16, 18 against adjustable stops 90. Meshing with the sector 14 is a rack 46 connected to the servomotor piston 42, the servomotor cylinder 40 being formed integrally with the box 10, and spaces 108, 110 in the cylinder being connectable by the control valve 60 to a pump (not shown).
Patent GB-961544-A (GB)
Title: Improvements in carton-closing apparatus
Inventor: KAY JAMES ARTHUR
IPC: B65B51/16
Filed: 1960-03-04
Abstract: 961,544. Packaging apparatus. ROSE BROS. (GAINSBOROUGH) Ltd. April 28, 1961 [March 4, 1960], No. 7669/60. Heading B8C. A carton-closing apparatus in which cartons having end closures formed by extending flaps are fed to and through a sealing unit serving to apply gum to the engaging faces of the flaps, the flaps being then folded over and pressed on to previously folded inside flaps is provided with a series of single-flanged rollers so that the pressing operation is performed by the rollers extending over the entire width of the carton and having their flanges disposed alternately at opposite sides of the path of the cartons. Cartons 11 are fed in spaced succession along supporting rails 12 and between guides 13 by a chain conveyer 14 having spaced pushing elements 16 to a folding station comprising ploughs 17 and 18 serving to fold over the outer flaps to complete the end closure and, are then advanced through a pressing station comprising a series of rollers 19 formed intermediate their ends with flanges 21, which are disposed alternately at opposite sides of the cartons path and the rollers are rotatably mounted in a pair of supporting plates 22 and 23 secured to blocks 24 and 26 with the blocks secured to adjusting bars 27 and 28 respectively. The adjusting bars 27 and 28 are carried by brackets 29 and 31 and are mounted on sleeves 32 and 33, respectively, the sleeves being arranged to engage with an adjusting shaft 36 formed with threads of opposite hand. On rotation of a hand wheel 41 the plates 22, 23 mounting the rollers 19 are moved to cause the flanges 21 on alternate rollers to be moved axially towards or away from each other to accommodate various widths of cartons. To this end the ploughs 17 and 18 are secured to the bars 27 and 28, respectively, by brackets 42, so as to move in conjunction with the rollers 19.
Patent GB-676146-A (GB)
Title: Crystalline dihydrostreptomycin sulphate and process for the production thereof
IPC: C07H15/238
Filed: 1950-03-28
Abstract: Crystalline dihydrostreptomycin sulphate of formula <FORM:0676146/IV (b)/1> , melting point 265 DEG  C. and optical rotation of [a ]25 DEG D-88 DEG  (c, 1.0 per cent H2O) is prepared by adding to an aqueous solution of dihydrostreptomycin sulphate an organic solvent, which is not a solvent for the dihydrostreptomycin sulphate, having oxygen and not more than 5 carbon atoms in the molecule and being at least partially miscible with water, in sufficient amount to substantially reduce the solubility of the dihydrostreptomycin sulphate in said aqueous solution and allowing the mixture to stand until crystallization occurs.  In a preferred method, sufficient methanol is added to an aqueous solution of dihydrostreptomycin sulphate to produce a turbid solution, a crystal of dihydrostreptomycin sulphate is added for seeding, the solution is allowed to stand and the crystals are then filtered off.  Alternatively, crystallization may be brought about by adding methanol drop by drop to the turbid solution.  The crystals may be washed with 50 per cent aqueous methanol, then with absolute methanol, and dried in vacuo.  The following systems may be used: ethanol water, propanol water, butanol water, ethoxyethanol water, dioxane water, methyl ethyl ketone water, acetone water and tetrahydrofurane water.  Specification 620,415 is referred to.
Patent GB-1213384-A (GB)
Title: Four-phase logic systems
Inventor: JARVIS DENIS BRIAN
IPC: H03K23/00
Filed: 1968-02-16
Abstract: 1,213,384. Electronic counters. ASSOCIATED SEMICONDUCTOR MFRS. Ltd. 8 May, 1969 [16 Feb., 1968], No. 7758/68. Heading G4A. Each binary stage of a counter operating to a 4-phase system, Fig. 3, comprises three halfshift registers 3, 8, 10, inverters 4, 9, and logic circuits 5-7, 11. The half-shift registers 3 and 8, comprising M.O.S.'s 20-22 and 25-27, respectively, are controlled by phases Ï 1  and Ï 2,  the input signal being stored on the gate capacitance of one of the M.O.S.'s. Similarly half-shift register 10 comprises 30-32 and is controlled by Ï 3 , Ï 4 . Inverters 4, 9 comprise pairs 23, 24 and 28, 29 controlled by Ï 2 . The charged capacitances are sensed by AND gates 5, 6, 11 comprising M.O.S.'s 33, 34; 35, 36; and 32, respectively by pulses Ï 3 , Ï 4 . The Boolean relationships in terms of potential are shown in Fig. 2. The state of the circuit as represented by the potential at E changes over at the completion of each cycle Ï 1 -Ï 4 . Read-out is effected at 2 and carry at 12.
Patent GB-187913-A (GB)
Title: An improved apparatus for hatching the eggs of birds
IPC: A01K41/00
Filed: 1922-03-16
Abstract: 187,913. Perks, W. G. March 16, 1922. Hatching-appliances. - A hatching-appliance comprises a water tank A with a flexible waterproof bottom B with the underside of which eggs. are brought into contact. The boiler R is heated by a lamp M, and the water passes up the pipe S, circulates through a spiral passage formed beneath a baffle-plate H, and passes down the pipe T to the boiler again. The temperature is controlled by a thermostatic capsule K and levers &c. L, Q, P, actuating a damper O. The eggs are placed in a drawer D supported by counterweights F on cords passing over pulleys G. A tray X, containing water or wet material, is placed beneath the drawer, and air passes over it through apertures V, passing away through apertures a' in a flap a. At the hatching period the drawer is lowered slightly and the eggs observed through a window b. A larger flap d gives access to the chicks &c.
Patent GB-673958-A (GB)
Title: Improvements in or relating to sealed compressors for refrigerating mechanisms
IPC: F25B31/02
Filed: 1949-03-23
Abstract: 673,958. Dynamo electric machines. STEVENS, A. H. (International Detrola Corporation). March 23, 1949, No. 7902/49. Class 35. [Also in Groups XIII and XXVIII] In a sealed compressor unit (see Group XXVIII), wherein an electric motor 12 drives a compressor 36, gas is drawn up through, the armature 42, down through clearances 64 in the stator 39 and through pipes 65 to inlet chambers 58 by the pistons 53, thereby cooling the motor. A thermostat 112 in close contact with the upper part of the unit switches off the motor on overheating. The armature is provided with a pair of weights 43, 44 arranged to counter-balance the crank-shaft of the compressor.
Patent GB-1484449-A (GB)
Title: Method and apparatus of liquid smoke regeneration
IPC: A23L3/00
Filed: 1976-03-01
Abstract: 1484449 Smoking foodstuffs DEC INTERNATIONAL INC 1 March 1976 [10 April 1975] 08002/76 Heading A2D An apparatus for smoking foodstuffs consists of a food smoke house, a smoke generator having a vapourizing chamber and a nozzle through which liquid smoke is introduced into the chamber and a duct means connecting the smoke house and the chamber and further comprises an air heater means positioned externally of the chamber, means defining an air passage between the air heater means and the chamber and means for producing a flow of heated air from the air heater means into said chamber, the air heater means producing an air temperature of at least 500F in said chamber for vaporizing the liquid smoke from said nozzle the heated air with smoke vapour entrained therein being then passed from the vaporising chamber to the smoke house. A suitable apparatus is shown in the accompanying Figure and comprises a smoke house 10 connected to a vaporising chamber 13 which itself is in communication with an air heater means 19. Liquid smoke may be fed to chamber 13 continuously or under the control of timer 56, intermittantly. The total duration of spraying may be controlled by timer 57. The temperature of the heated air may be controlled by means 51 which is connected to heating means 30 in the air heater, and sensor 52 in the vaporising chamber. The heated air may be recycled from the smoke house via duct 27. Alternatively ambient air may be drawn in via duct 28.