baber/WOPTO huggingface dataset:
Patent GB-473427-A (GB)
Title: Improvements in or relating to wireless and like receivers
IPC: H04N5/60
Filed: 1936-04-09
Abstract: 473,427. Wireless receiving-apparatus. PERCIVAL, W. S. April 9, 1936, No. 10596. [Class 40 (v)] A wireless receiver adapted to receive two associated signals comprises a common signal frequency amplifier feeding two separate channels for the detection of the associated signals. Television and sound signals received on aerial 1 are passed by transformer 26 to amplifier stages I, II, which have a resultant pass band substantially flat over the television range and some response to the sound carrier. Transformer 26 may be tuned to the television carrier while 21 and 22 are tuned towards the sound carrier frequency. The screened lead 28 feeds the frequency changer stage VII whose circuits are arranged to produce sound I.F. voltages to be amplified in stage VIII and detected in the normal manner while television signals are highly attenuated. The tuning of transformers 23, 24 of stages III and IV is staggered to frequencies on the opposite side of the television carrier to 22 with the result that a substantially flat television band is passed to stage VI for utilization while sound signals are practically suppressed. Instead of amplifier stages as III and IV a superheterodyne arrangement could be used for the television signals, or the stages VII and VIII might be amplifiers with the input tuned to frequencies successively staggered away from the television carrier.
Patent GB-1248584-A (GB)
Title: Thyristors and other semi-conductor devices
Inventor: STACEY MICHAEL ALBERT
IPC: H01L21/00
Filed: 1968-03-05
Abstract: 1,248,584. Semi-conductor devices. JOSEPH LUCAS (INDUSTRIES) Ltd. 24 Feb., 1969 [5 March, 1968], No. 10608/68. Heading H1K. A method of producing a semi-conductor device comprises the steps of producing a semiconductor wafer having a first region 13 exposed on one surface of the wafer, a second region 12 ex - posed on the other surface of the wafer, and third regions 16 in the second region and exposed on the other surface of the wafer, then plating the wafer first with nickel then with gold to form layers 17, then removing the gold from above at least part of each of the junctions between the second and third regions so as to divide the second region into a plurality of first portions each of which is connected through the gold to a third region, and a plurality of second portions each of which is not connected through the gold to a third region, then dividing the wafer at positions between the third regions into a plurality of chips each containing one of the third regions, then etching the chips using an etchant which does not attack gold but removes the nickel over the junctions where the gold was removed, and finally making contact to the gold layers on the first and third zones of each chip and to the second portion of the second region of each chip.
Patent GB-141745-A (GB)
Title: Improvements in and relating to high frequency dynamo electric machines
IPC: H02K19/24
Filed: 1920-04-16
Abstract: 141,745. British Thomson - Houston Co., (Assignees of Alexanderson, E. F. W.). June 22, 1915, [Convention date]. Inductor-alternators; armatures and field magnets, short-circuited shields and dampers on poles of.-A high-frequency alternator for radio communication comprises a circular stator core 5 supporting a pair of laminated rings 7 each carrying a zigzag armature winding 13 positioned in slots 16 of the overhung type. Stationary field-magnet coils 10 are mounted as shown. The periphery of the rotating inductor 9 is slotted to form a number of magnetic poles 15, and the slots are filled with blocks 11 of copper or other non-magnetic metal, which are connected at the ends by conducting-rings 17 to form short-circuited windings for minimizing the effect of armature reaction. The widths of the stator teeth 16<1> and of the inductor poles 15 are such that, as the inductor 9 rotates, the number of inductor poles opposite any stator tooth alternates between n+I / 2 and n-I / 2, where n is any odd numeral greater than one. As shown in Fig. 2, either one or two inductor poles are opposite each stator tooth as the inductor rotates, the frequency of the induced current being three times the frequency which would result from the employment of inductor poles and stator teeth with the same pitch.
Patent GB-431090-A (GB)
Title: Improvements in the manufacture of cement
IPC: C04B7/47
Filed: 1934-04-09
Abstract: 431,090. Portland cements. SOC. DES CIMENTS FRANCAIS ET DES PORTLAND DE BOULOGNE-SUR-MER ET COMPAGNIE DES PORTLAND DE DESVRES, 80, Rue Taitbout, Paris. April 9, 1934, No. 10714. Convention date, April 25, 1933. [Class 22] [See also Group XII] White cement clinker is obtained by removing the clinker directly from the hottest zone in the kiln and cooling it in the absence of any gas containing oxygen. The cooling may be effected in an atmosphere of water gas, producer gas or water vapour in a closed vessel or by quenching with water or by allowing the clinker to cool in a heap in the air. In this latter case, the surface layer is removed, the bulk of the heap not having been in contact with air. Apparatus which may be used provides, as shown, for the exit of the clinker into a closed cooling chamber 6 through holes 3 or 4 either set of which is used according to the position of the hottest zone. In another form, not shown, the kiln is in two separate coaxial tubes, the clinker emerging into the cooling chamber at the point of separation which is arranged to be at the hottest zone.
Patent GB-1459782-A (GB)
Title: Photo-degradable polymer
IPC: C08F279/02
Filed: 1973-03-06
Abstract: 1459782 Copolymers of butadiene polymers and vinyl ketones BP CHEMICALS Ltd 6 March 1974 [6 March 1973] 10722/73 Heading C3G A photodegradable copolymer comprises copolymerized units of (a) a high vinyl butadiene polymer (i.e. containing at least 25% by number of 1,2-butadiene units) and (b) an aryl vinyl or alkyl vinyl ketone. The copolymer may be made by polymerization in the presence of a free radical initiator. The copolymer may be blended with a thermoplastic polymer. In the examples a polybutadiene containing 90% of vinyl units was copolymerized with methyl vinyl ketone in benzene together with azobisisobutyronitrile and the copolymer was then blended with polystyrene or with polyethylene and pressed into sheets.
Patent GB-559057-A (GB)
Title: Demountable electron discharge tube
IPC: H01J7/24
Filed: 1942-07-31
Abstract: 559,057. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. July 31, 1942, No. 10734. Convention date, Aug. 7, 1941. [Class 39 (i)] An electron discharge tube comprises a number of electrodes mounted on plates 1, 2, 3, 4, the latter being spaced by glass tubes 6, 7 and 8, having flared ends fitting into circular grooves in the plates containing rubber seating rings, clamps 33 being provided to free the flared ends into the seating means. A cathode 11 is mounted on a plate 1 which forms a closure for one end of the tube, and a second mounting plate 2 supports a grid 24, and a cylindrical anode is supported between plates 3 and 4, a connection 28 to an exhaust pump being mounted on a plate 5. The anode is provided with a cooling coil 26 secured thereto by solder 27. Plates 1 and 2 are cooled by pipes 38 and 34 and the cathode leads 14 are provided with terminal blocks 18 having cooling passages 19.
Patent GB-954236-A (GB)
Title: Improvements in or relating to railway vehicle control systems
IPC: B61L17/02
Filed: 1961-03-24
Abstract: 954,236. Vehicle control systems. TELEFUNKEN A.G. March 24, 1961 [March 23, 1960], No. 10815/61. Heading B7N. In apparatus for controlling rail vehicles is a rail brake zone in which successive vehicles (or cuts of vehicles) are subjected to braking by rail brake 2, the brake is released if it appears that a second vehicle will overtake and collide with a first vehicle when the speed of the first vehicle is being reduced in the rail brake. A photo-electric detector 5a, 5 in a track section 1 in approach to the rail brake produces an output signal only when light from source 5a is cut off by a passing vehicle from photo-cell 5 and a second photo-electric detector, including light source 6a, mirrors 6b, 6c and photo-cell 6, produces an output signal when rail brake 2 is unoccupied. The output of each detector is connected to a circuit 7 which supplies an output to a bi-stable flip-flop circuit 8 when an output signal is received from detector 5 in the absence of a signal from detector 6. When triggered the flip-flop produces an output signal which is applied to brake control means 3 via amplifier 4 and releases the brake. The brake is reapplied by manual operation of a signalling device 9 which triggers the flip-flop back to its original state.
Patent GB-543463-A (GB)
Title: Improvements in or relating to the feeding of flexible disc-shaped articles such as labels, gaskets and the like
IPC: B65C9/08
Filed: 1940-06-24
Abstract: 543,463. Feeding sheets. BEE BEE BISCUITS, Ltd., and BUXBAUM, E. K. June 24, 1940, No. 10816. [Class 100 (i)] Sheets such as labels, gaskets, &c., are fed from the bottom of a vertical hopper 1 formed with a number of lugs 3 which support the pile but permit the bottom sheet to be separated by a suction cup 13 which is raised into contact with the sheet and then withdrawn and rotated to bring the separated sheet under a reciprocating suction device 16 which takes the separated sheet and transfers it to a container 18 or to any other desired position. The cup 13 is carried by a shaft 7 which is given a combined vertical and oscillating motion, and slots 9 in the shaft 7 are maintained constantly in a suction chamber 6. A slot 8a vents, the shaft 7 when in position to transfer the sheet. Specification 542,148, [Group XVII], is referred to.
Patent GB-1204281-A (GB)
Title: Alkaline galvanic battery
Inventor: KOCHERGINSKY MEER DANILOVICH
IPC: H01M50/103
Filed: 1969-02-28
Abstract: 1,204,281. Alkaline cell. M. D. KOCHERGINSKY, S. L. KALACHEV, M. F. NABIULLINA, V. A. NAUMENKO and L. F. PENKOVA. 28 Feb., 1969 [29 April, 1968], No. 10854/69. Heading H1B. An alkaline cell comprises a plastics body 1 having a projection 2 on which is supported an internal diaphragm 6, the diaphragm separating the positive and negative electrodes 7, 3 and both electrodes having metal connectors 4, 10 arranged so that each can make contact with the appropriate connectors of two adjacent cells of the same construction. The body may be cylindrical or rectangular and the projection may have an oblique face (Fig. 2, not shown) so that the diaphragm wedges against it. The cell may be a zinc/air or zinc/manganese type. In Fig. 1, electrode 3 is of zinc paste and electrode 7 is an air electrode, 5 denotes sealing material. The cells may be stacked into a battery which is wrapped in a casing having air holes in it (Figs. 3 and 4) and during storage is further protected by an air-tight polyethylene container (Fig. 5).
Patent GB-851863-A (GB)
Title: Improvements in the manufacture of melamine
Filed: 1957-04-03
Abstract: Melamine is continuously prepared from urea or its thermal decomposition products in the presence of minimal quantities of ammonia by providing a continuously flowing stream comprising ammonia gas at a temperature above 425 DEG C. under a pressure of at least 750 p.s.i.; preheating as feed material urea or it's thermal decomposition products to a temperature above its melting point but below its decomposition point; continuously introducing a flow of preheated molten feed into the heated pressurised ammonia stream under a pressure of at least 750 p.s.i.; controlling the rates of flow of feed and gas such that the combined flows have a temperature of from at least 425 DEG C. to 550 DEG C., thereby forming a mixture comprising melamine and ammonia vapours; thereafter introducing at least one additional flow of preheated molten feed into said combined flow; controlling the temperature of said combined flow and the rate and temperature of each said additional flow such that a temperature of 425-550 DEG C. is maintained at all times; adjusting the rate and number of said additional flows such that the rate of said combined flow is sufficient to retain the reaction products in suspension; continuously withdrawing ammonia gas and melamine, and recovering melamine therefrom.  Specified starting materials, other than urea, are biuret, triuret, cyanic acid and ammonium cyanate.
Patent GB-154843-A (GB)
Title: A new or improved detergent
IPC: C11D17/06
Filed: 1920-04-20
Abstract: A detergent for cleaning woollen, silk, and dyed fabrics, consists of 4 parts of crystallized sodium sulphite mixed with 6 parts of powdered soap.  For cleaning undyed cotton and linen fabrics the proportions used are 5 parts sodium sulphite, 3 parts powdered soap, and 12 parts of an alkaline salt, preferably dry sodium carbonate.
Patent GB-1506386-A (GB)
Title: Commutators
IPC: H01R43/08
Filed: 1974-03-12
Abstract: 1506386 Commutators GEO L SCOTT & CO Ltd 10 March 1975 [12 March 1974] 10984/74 Heading H2A A commutator has segments 1 mounted on an insulating layer 2 which is bonded to the outer rim 32 of a core 3, the core 3 having an open recesed structure between the rim 32 and a hub 33. The segments 1 may be initially mounted on a strip 4 containing a pressure-sensitive adhesive, the strip 4 being pressed against the rim 32 to transfer the segments thereto. Alternatively, a stamped copper sheet (5, Fig. 3, not shown) with segments (6) joined to side rails (8) may be mounted on a core, and the side rails subsequently machined away to separate the segments. The core and segments may have frusto-conical shapes, as in Fig. 4 (not shown), and segments (16, Fig. 5, not shown) may be secured by bending around the edges of a core rim.
Patent GB-1468635-A (GB)
Title: Parking device for blowout preventer
IPC: E21B19/00
Filed: 1975-03-17
Abstract: 1468635 Installing blow-out preventers FINN TVETEN & CO AS and AKERS MEK VERKSTED AS 17 March 1975 [18 March 1974 11 March 1975] 11007/75 Heading E1F A blow-out preventer is transported from a parked position a on the main deck 1 of a drilling rig to a position c in which it is incorporated into the drill string, by means of a frame 5 which is mounted on a carriage 6, the frame being movable relative to the carriage in the vertical sense. The carriage moves along rails 12 and has hydraulic jacks (7), Fig. 2 (not shown), to raise and lower the frame. The base of the frame is provided with a frusto-conical testing block (11) upon which the blow-out preventer fits and can be functionally tested before installation. To enable work to be carried out on the blow-out preventer the carriage is provided with adjustable supports (20), Fig. 3 (not shown) for the purpose of suspending the blow-out preventer from the carriage.
Patent GB-526775-A (GB)
Title: Improvements in or relating to aircraft-stabilizing devices
IPC: B64C5/02
Filed: 1939-04-11
Abstract: 526,775. Aircraft. RICHARD, P. A. April 11, 1939, No. 11026. Convention date, April 8, 1938. [Class 4] A stabilizing device for aircraft comprises two parallel supporting planes 3, 4 and two vertical drift planes 6, 7 between their free ends and rigidly connected to both supporting planes as shown in Fig. 2 or rigidly connected to one supporting plane 3 and articulated at 4a, 4b to the other supporting plane as shown in Fig. 8. In Fig. 2 the planes 3, 4 are mounted on the fuselage 1 by means of a streamlined post 5 and in Fig. 8 one plane 3 is so mounted and the other formed in two parts 4<1>, 4<2> articulated to the post or fuselage at 6<1>, 6<2>. Fig. 6 shows the provision of supporting planes 3, 4 and drift planes 6, 7 on an aircraft having two fuselages 1<1>, 1<2>. The supporting planes may be interconnected by transoms 8 and flaps 9 ... 12 may be articulated to the supporting planes, drift planes and transoms and control means provided enabling them to be used as elevators and rudders.
Patent GB-200908-A (GB)
Title: Improvements in the arrangement of the front axles of motor road vehicles having front wheel brakes, and in the means by which the front brakes are operated
IPC: B60G9/02
Filed: 1922-04-20
Abstract: 200,908. Austin, Sir H. April 20, 1922. Axle distance members and torque-rods. - In motor vehicles having front-wheel brakes and a transverse front axle spring, stays or torque-rods E are rigidly connected at their forward ends to points near the end of the front axle and at their rear ends to the frame by a universal joint.
Patent GB-1123872-A (GB)
Title: Imidazolidine derivatives
Inventor: DINWOODIE ANDREW HARPER
IPC: C07D233/52
Filed: 1966-03-14
Abstract: The invention comprises difluoramino derivatives of 1,2 - bis(2 - oxoimidazolidin - 3 - yl) ethane and their preparation by reaction of a 1,2 - bis(2 - oxoimidazolidin - 3 - yl) ethane diol, or an ester or ether derivative thereof, with difluoramine in an inert atmosphere in the presence of an acid condensing agent.  The difluoramino compounds have the general formula <FORM:1123872/C2/1> where R1 is hydrogen or a monovalent group, e.g. alkyl, substituted alkyl, acyl, aroyl, or nitro, and R3 and R4 are hydrogen, or a monovalent organic group, e.g. alkyl, hydroxyl, alkoxy, substituted alkoxy, acyl, aroyl, aroyloxy, or difluoramino.  The starting material is of the general formula given above, except that the -NF2 groups are replaced by -OR2 groups and R2 has the same meaning as R1; such compounds may be prepared as described in Specification 1,095,866.  In examples, R1 is hydrogen, methyl, ethyl, isopropyl, methoxymethyl, trinitroethyl, formyl, or acetyl, R2 is hydrogen, methyl, or acetyl, and R3 and R4 are hydroxyl, methoxy, or acetoxy.  Acid condensing agents used are concentrated H2SO4, oleum, and fluorosulphonic acid; paraformaldehyde may be added to yield more fully difluoraminated products.  Reaction may take place in nitrogen under difluoramine reflux.  The difluoramino compounds may be used, as constituents of high energy propellent compositions. Specification 1,120,831 is referred to.
Patent GB-1456155-A (GB)
Title: Naphtha reforming catalyst and process
IPC: B01J23/60
Filed: 1974-03-14
Abstract: 1456155 Reforming catalyst G N MASLYANSKY B B ZHARKOV T M KLIMENKO and S A BARKAN 14 March 1974 [15 March 1973] 11302/74 Heading B1E [Also in Division C5] A naphtha reforming catalyst comprising an aluminium carrier having platinum, cadmium, chlorine and rhenium or iridium deposited thereon. Suitably, the catalyst comprises a gamma-alumina carrier, 0.1 to 1 wt % Pt, 0.1 to 3.0 wt % Cl, 0.5 to 1.0 wt % Cd and 0.1 to 0.5 wt % of Re or Ir. The catalyst may be formed by co-precipitation or impregnation followed by - calcination and hydrogen reduction.
Patent GB-527974-A (GB)
Title: Improvements in and relating to the preparation of colloidal suspensions
IPC: C10M177/00
Filed: 1939-04-14
Abstract: 527,974. Colloidal sols. ACHESON, Ltd., E. G., and SCOTT, L. G. April 14, 1939, Nos. 11415/39 and 8381/40. [Classes 1 (i) and 91] In the preparation of a colloidal suspension of a solid lubricant, e.g. graphite, mica and talc, in a non-aqueous medium by transfer from an aqueous suspension, the non-aqueous medium comprises substances of high molecular weight, i.e. above 600, which are wholly or partly soluble therein and are capable of being adsorbed by the lubricant. Suitable substances of high molecular weight are :-(a) rape seed oil or a mixture thereof with mineral oil which has been subjected to silent electric discharge ; (b) fatty oils such as black or white mustard seed, linseed, cottonseed, hempseed, soya bean, sesame, tung, sunflower and walnut oil airblown at elevated temperature or condensed either alone or in admixture with other compounds in the presence of catalysts or subjected to silent electric discharge ; (c) liquids and phosphatics which may be polymerized or condensed ; (d) rubber dissolved in mineral oil in the presence of oxygen; (e) polymerized unsaturated hydrocarbons, e.g. polyolefines prepared by burning olefines into a hydrocarbon diluent at a temperature below -10‹C. in the presence of catalysts such as aluminium chloride or boron trifluoride; (f) any of the above substances modified by the addition of sulphuric acid groups. An example describes agitating an aqueous dispersion of graphite with "elektrion" oil with or without a diluent, by which water separates and is finally removed by heating under vacuum. The suspension may be diluted with mineral oil or "elektrion" oil or a mixture. Alternatively, a solution of cephalin and mineral oil may be used. Suitable diluents are mineral oil, benzene, toluene, gasoline, kerosene, associated hydrocarbons, chlorinated ethers and esters. Specifications 27312/07 and 4155/12, [both in Class 91], are referred to.
Patent GB-1184905-A (GB)
Title: Mineral Mining Machine Steering
Inventor: PAGE RONALD CECIL
IPC: E21C35/08
Filed: 1966-08-16
Abstract: 1,184,905. Mineral-mining machines. COAL INDUSTRY (PATENTS) Ltd. 11 Aug., 1967 [16 Aug., 1966; 10 March, 1967], Nos. 36545/66 and 11422/67. Heading E1F. Steering means for a mineral-mining machine involves two interconnected, liquid-containing chambers carried by the machine and detecting means operable in response to change in the levels of liquid relatively to the chambers to mechanically cause the steering means such as described in the referred Specifications 1050201, 1047782 and 1047856 to steer the machine so that said change in relative levels is reduced. Three preferred embodiments are described in detail.
Patent GB-255568-A (GB)
Title: Novel or improved tell-tale device for use in indicating whether an unseen light is off or on
IPC: B60Q11/00
Filed: 1925-05-02
Abstract: 255,568. Austin Lighting Co., Ltd., and Walker, C. B. May 2. 1925. Thermal switches; indicators.-For indicating the condition of an electric lamp A, such as the tail lamp of a motor-car, a strip of bimetallic material F carrying a contact f is surrounded by a winding M in circuit or in shunt with the lamp A and is adapted to cooperate with a second strip E having a contact e so as to open or close a second circuit containing a tell-tale lamp N, preferably arranged on the dash-board. By making the strips E, F of similar materials, variations in atmospheric temperature are compensated for. The switch is preferably arranged so that the lamp N is illuminated when the lamp A fails, but an arrangement in which both lamps are alight simultaneously mav be adopted. The strip E is mounted adjustably on a threaded stud G so that the relative positions of the contacts e. f can be altered, and the switch and tell-tale lamp N are supported in a single casing preferably fitted with a red window adjacent to the lamp.
Patent GB-1158813-A (GB)
Title: Stator vane for a gas turbine engine
Inventor: SCOTT MALCOLM RALPH
IPC: F01D5/14
Filed: 1968-03-08
Abstract: 1,158,813. Making stator vanes. ROLLSROYCE Ltd. 8 March, 1968, No. 11427/68. Heading B3A. [Also in Division F1] A method of making a stator vane 14 for a gas turbine engine comprises forming the flow guiding surfaces 23, 24 of the platform 21 and/or shroud 22 with a convex curvature and then reducing the convex curvature by machining so as to increase the throat area x, y defined in the assembled condition between an adjacent vane to a desired value. To compensate for any excessive reduction in the convex curvature, the trailing edge 26 of the vane may be bent to reduce the distance y or the generally axially extending edges 30 of the platform and shroud may be machined to change the angle of incidence of the vane.