baber/WOPTO huggingface dataset:
Patent GB-886628-A (GB)
Title: Improvements in or relating to input circuits for a.c. amplifiers
Inventor: AIRD JOHN HAMILTON
IPC: H03F3/40
Filed: 1958-12-11
Abstract: 886,628. Phase-sensitive circuits. ELLIOTT BROS. (LONDON) Ltd. Dec. 11, 1959 [Dec. 11, 1958], No. 40054/58. Class 38 (4). In an input circuit for an alternating current amplifier a direct current signal is converted into an alternating current signal which reverses in phase when the value of the direct current signal exceeds a predetermined value. The direct current signal is applied to terminals 3, 4 of the input circuit, across which are connected a resistor 9 and a rheostat 10 in parallel with a short-circuiting switch 2 actuated by a coil 5 energized at mains frequency. The rheostat 10 is included in a series circuit with resistors 12-14 across a stabilizing valve supplied from terminals 4, 6 through a current-limiting resistor 8. The bias to the first stage of the amplifier 1 is derived from a junction 15 through a resistor 16 and a capacitor 17 is connected between the terminal 3 and the input to the amplifier. The switch 2 is periodically closed at mains frequency and voltage pulses appear at the input to the amplifier representing in phase and amplitude the difference between the voltage drop across resistor 9, due to the direct current signal, and the voltage across the rheostat 10, due to the direct current signal and the current through resistors 12-14. A process controlled through the amplifier is protected from damage due to component failure in the input circuit, by on failure, the first stage being biased to cut-off or the phase of the alternating current signal being reversed.
Patent GB-1222737-A (GB)
Title: Sabot projectile
IPC: A47L15/44
Filed: 1968-08-22
Abstract: 1,222,737. Coated projectile. WERKZEUGMASCHINEN OBERLIKON-BUHRLE A.G. 22 Aug., 1968 [5 Sept., 1967], No. 40306/68. Heading B2E. [Also in Divisions C5 and F3] The core of a sabot projectile consisting, in whole or in part, of tungsten carbide is microfinish ground, degreased, and coated by spraying with a layer consisting of a mixture of 9.1% of molybdenum disulphide, 7.6% phenol resin, and 83.3% ethyl acetate. The layer which adheres to the surface of the core to a thickness of 1.5 to 2.0 x 10<SP>-3</SP>mm is then lightly polished, after which the core is heated and held at 80-100C for at least two minutes to evaporate the ethyl acetate and leave a dry lubrication film.
Patent GB-967901-A (GB)
Title: Improvements in and relating to nuclear reactor installations
IPC: G21C15/18
Filed: 1960-11-24
Abstract: 967,901. Nuclear reactors. BABCOCK & WILCOX CO. Nov. 24, 1960 [Dec.4, 1959j,No. 40430/60: Drawings to Specification. Heading G6C. The reactor system described in Specification 929,784 is modified in that means are provided for heating or cooling heat transfer fluid and passing it through the monitoring space encircling the coolant flow path so as either to preheat the reactor before start up or to cool it after shut down. The heat transfer fluid and the monitoring fluid may be one and the same, e.g. helium.
Patent GB-1408564-A (GB)
Title: Gelation process
IPC: C08G63/91
Filed: 1971-09-02
Abstract: 1408564 Aluminium-containing resin complex HARDMAN & HOLDEN Ltd 4 Dec 1972 [2 Sept 1971] 41004/71 Headings C3R C3P and C3B An aluminium-containing resin complex is prepared by adding a synthetic resin material containing free carboxy, hydroxy, hydroperoxy, or active methylene groups to a solution of an aluminium compound so that there is at least one molecule of aluminium compound for each reacting group on the resin. Aluminium alkoxides, if desired with one or more radicals of higher alcohols, aluminium alkoxo acids made by the addition of alcohol to the alkoxide and more complex reaction products of alkoxides with water, fatty acids and other carboxylic acids are the type of aluminium compounds referred to Examples describe the preparation of paint compositions by addition of alkyd resins to combinations of aluminium isopropoxide, white spirit and titanium dioxide. Styrene-butadiene resins and epoxy resins are also referred to.
Patent GB-1082325-A (GB)
Title: Improvements in or relating to modulated high-frequency circuit arrangements
IPC: H03K7/10
Filed: 1964-10-08
Abstract: 1,082,325. Amplitude modulating systems; pulse modulation systems. TELEFUNKEN PATENTVERWERTUNGSGESELLSCHAFT m.b.H. Oct. 8, 1964 [Oct. 10, 1963], No. 41127/64. Headings H3R and H4L. Pulses at carrier frequency are width modulated and used to control a power amplifier, the output of which is filtered to produce an amplitude modulated sinusoidal output. Referring to Figs. 4 and 5, a modulating signal a(t) having a maximum amplitude of Œ 1is supplied to terminal NF and added to a direct voltage of 3 in unit ANI. The carrier wave supplied at terminal HF passes through a full wave rectifier G1, and with an amplitude equal to 2 is added to the a + 3 signal in unit AN2 to produce the signal shown as a+ 3 - /2 sin wt/. This is passed to a trigger or flip-flop circuit K1 having a threshold of 2 and producing the two outputs shown as (V1) and (V2) in Fig. 5; these outputs respectively modulate power amplifiers V1 and V2 whose outputs are connected in push-pull, the combined output passing to a filter F1 which selects the fundamental frequency which is an amplitude modulated sine wave. Since the amplifiers are either on or off their efficiency is high. Where a single sideband oscillation is to be produced the H.F. oscillation is phasemodulated with the phase modulation component. The pulse width # in angular measure 1+a is preferably equal to 2 sin<SP>-1</SP> -. In a 2 modification, Figs. 6 and 7 (not shown), opposite half-cycles of the carrier are separated and converted to the same polarity and each is added to the a+3 signal; the two signals are each connected to the two input terminals of two flip-flops which produce outputs corresponding to (V1) and (V2) of Fig. 5.
Patent GB-1011012-A (GB)
Title: Improvements in or relating to implements for harvesting beets or like root vegetables
IPC: A01D19/10
Filed: 1961-11-17
Abstract: 1,011,012. Harvesting beet. C. VAN DER LELY N.V. Nov. 17, 1961 [Nov. 23, 1960; March 3, 1961], No. 41270/61. Heading AlF. A beet-harvester comprises a frame 2 carrying beet-lifting tools 3, 4, 5 and a sidedelivery device 11 arranged behind the tools and connected to the frame 2 so as to be pivotable about a vertical pivot 9 and to be fixable in various positions, a ground-engaging supporting member 16 being mounted at the rear of the sidedelivery device so as to be adjustable about a vertical pivot 13 and to be fixable in various positions relative to the device. In Fig. 1 the side-delivery device is a fixed vertical grating 11, but it can also comprise a row of rake wheels (Fig. 11). Either the grating 11 or the beam carrying the rakewheels forms one long side of a parallelogram-linkage 11, 12, the remaining sides being formed by the ground-wheel axle 14 and a bracket 6 by which the device is attached to the tool-carrying frame 2. A cable 19 joins points 18, 20 on the members 11 and 2 respectively, there being alternative positions 20 of attachment so that the angle of the member 11 to the line of draught is variable. The bracket 6 can have a slotted connection (Fig. 8, not shown) with the tool-bar 8 so that it may be twisted about a horizontal axis, in order to tilt the wheel 16 out of the vertical. The wheel may also be swivelled out of the line of draught by incorporating a turnbuckle 97 (Fig. 11) in the rear link 92 of the parallelogram linkage. In this construction the beam 47 is angled to the line of travel by rod 101 connected to a lever 108 pivoted on the frame 46 and extended forwardly to be accessible to the tractor-driver. The lever has a manually-releasable detent 110, 112 and the rod 101 also incorporates a turnbuckle 104. The beam 47 is pivoted universally to the attachment-bracket 71 a cable 79 being connected between the bracket and the rear of the beam to limit its downward movement. In Fig. 15 two side-delivery devices 137, 138 co-operate with six lifting tools 127, each device being rearwardly supported by a skid 143, 146 adjustable vertically and laterally and coupled to its neighbour by a telescopic coupling-rod 147. Grids 155, 159 are mounted adjacent to the skids to canalise the beets into a line. In a modification (Fig. 17, not shown), divergently-arranged sidedelivery rakes are mounted on the front of the propelling tractor to sweep trash and tops out of the path of the lifting tools.
Patent GB-1400472-A (GB)
Title: Polymerization catalyst systems and preparation and use thereof
IPC: C08F4/654
Filed: 1972-09-06
Abstract: 1400472 Olefin polymerization catalyst UNIVERSAL OIL PRODUCTS CO 6 Sept 1972 [7 Sept 1971] 41287/72 Heading C3P Olefinic hydrocarbons may be polymerized by means of a catalyst composition comprising (1) a Group IVA, VA or VIA metal halide chemically supported on an oxide of a metal of Group IIA, IIB, IIIB or IVB such that the atomic ratio of halogen to Group IVA, VA or VIA metal is at least 10 : 1, (2) an organometallic compound of a metal of Group IIA or IIIB and (3) a Lewis base modifier selected from organic phosphorus-containing compounds, organoamines, organoarsines and organosulphides. The metal oxide may be magnesium oxide having specified physical properties. A preferred catalyst, which is used to polymerize ethylene and propylene, comprises a TiCl 4 /MgO reaction product, triisobutylaluminium and diethylphenylphosphine.
Patent GB-848299-A (GB)
Title: Apparatus for the evacuation and gas-treatment of packages
IPC: B65B31/02
Filed: 1958-12-22
Abstract: 848,299. Packaging. HESSER MASCHINENFABRIK A. G., F. Dec. 22, 1958 [June 2, 1958], No. 41306/58. Class 94(1). An apparatus for evacuating air from filled bags and replacing it by inert gas comprises a series of chambers on a rotary head, each chamber containing bag sealing means and vacuum and gas connections, the bags being lifted into the chambers from entry conveyer level by plates which then serve as bottom closures for the chambers. Bags B, which may be enclosed in a carton, are fed from mechanism, (not shown), for filling and partially closing them, onto plates 9 on a rotating head supporting the chambers 1. The plates 9 are raised by hydraulic or pneumatic means 7 to carry the bags supported by brackets 13 into the chambers, a gasket 1<SP>1</SP> effecting the bottom seal. Air is withdrawn through ducts 35 connecting to a side of the chambers and gas is blown in at the top through ducts 37, this arrangement ensuring filling of the bag voids with gas before the mouth is closed by external pressure. Heated tongs 14, 15 now seal the mouths, these tongs being operated by stationary cylinder means 22, and the plates descend. A manometer 40 may be fitted to indicate faulty vacuum and means (not detailed), may be provided to operate a signal or eject faulty packages resulting therefrom.
Patent GB-1326231-A (GB)
Title: Double-walled containers
IPC: F17C3/02
Filed: 1970-08-27
Abstract: 1326231 Storing liquefied gases AIR PRODUCTS & CHEMICALS Inc 27 Aug 1970 [2 Sept 1969] 41311/70 Heading F4P A liquefied gas storage tank 14, surrounded by a radiation shield 16, is secured to an outer vessel 12 at one end 34 by a pair of horizontally disposed links 62, and is suspended, at each end 34, 36 by pairs of links 44, 46 pivoted to mountings 38, 40 on the tank 14 and to vessel 12, a pair of removable rods 64, 66 preferably rigidly securing the tank 14 to the vessel 12 during shipment. Each link 44, 46 comprises a pair of flat bars of e.g. stainless steel, insulated from the radiation shield 16 by members 56, 58 of e.g. fibreglass or polyurethane foam. The ends of the rods 64, 66 may be threaded or otherwise adapted to engage in sockets in the mountings 38, 40. A member 63 may also be fitted during shipment to prevent relative rotational or axial movement between the tank 14 and vessel 12.
Patent GB-1087852-A (GB)
Title: Method of drying a running web of sheet material
IPC: F26B13/18
Filed: 1964-10-09
Abstract: 1,087,852. Drying webs. JOHNSON CORPORATION. Oct. 9, 1964 [Nov. 6, 1963], No. 41386/64. Heading F4G. [Also in Division F2] A steam-heated, horizontal axis, drying cylinder 10 for paper or textile webs is rotated at a speed at which the condensate is in a " rimming " condition, i.e. the condensate is so centrifuged as to be uniformly circumferentially distributed, and the condensate is withdrawn through a plurality of radial pipes 18, rotating with, and spaced lengthwise of, the cylinder, by pressure differential existing between the steam pressure in the cylinder and the pressure in a condensate receiver 22, such withdrawal being at such a rate as to maintain a film of condensate of varying depth lengthwise of the cylinder. The pipes 18 are so arranged that the rimming condensate is deeper at the cylinder ends thereby reducing the heat-exchange and the tendency to over-dry at said ends. The pressure differential is sufficient to overcome centrifugal and gravitational forces acting on the condensate. The pipes 18 connect collecting heads 12, 14, 16 to a central pipe 20 leading to the receiver 22. The heads include inlets spaced at an adjustable distance from the cylinder inner periphery by screws and a spring clamping structure described in Specification 928,340.
Patent GB-1483440-A (GB)
Title: Condition responsive control unit
IPC: G05B11/06
Filed: 1975-10-09
Abstract: 1483440 Rectroactive control systems HONEYWELL Inc 9 Oct 1975 [10 Oct 1974] 41416/75 Heading G3R A control for a condition, e.g. temperature, sensed at 10 and adjusted at 12, consists of an amplifier 22, a first control circuit 45 (comprising the components 46, 47 and 50 to 54), a second control circuit 60 (comprising the components 61 and 63 to 65) and an output circuit 34 (comprising the components 36, 37 and 40 to 43). The arrangement is required to be such that for amplifier outputs below a threshold value the first control circuit governs the output circuit to supply a fixed minimum level of load current and for higher amplifier outputs the second control circuit governs the output circuit to provide a proportionally-variable load current. There may also be a maximum level of load current, so that the overall characteristic is as shown in Fig. 2. A third control circuit 60 (comprising the components 71 to 73 and 75) may provide overload protection. In Fig. 1, the sensor 10 is a thermistor and the load 12 is a solenoid 13 whose coil 14 controls a flow valve 15 in a refrigerator or heat pump. In Fig. 3 (not shown) the load is a heating resistor. In the refrigeration control example, a temperature sensed as correct causes the amplifier (a bridge differential amplifier) to deliver a zero-error output at 23. Current from the supply terminal 27 then biases transistor 51 to conduction and thereby establishes a condition in which the voltages across resistors 36 and 46 are equal and the load current is at its required minimum value. If the sensed temperature becomes too high, transistor 61 is biased to conduction and causes the load current to rise in proportion to the temperature error. Eventually, however, the voltage drop across resistor 46 will equal the breakdown potential of the shunt diode 47. Further rise in output current is thus prevented. The minimum and maximum load currents, i.e. the calibration points of Fig. 2, are determined by the resistors 52 and 63 respectively.  Under overload conditions, e.g. failure of sensor 10, a second amplifier output 24 switches on the transistor 71 whose output maintains the maximum load current state (by driving the voltage across resistor 46 up to the breakdown voltage of diode 47).
Patent GB-1269784-A (GB)
Title: Catalyst for the production of unsaturated aldehydes and carboxylic acids
IPC: B01J23/843
Filed: 1969-08-21
Abstract: 1,269,784. Heteropoly catalyst composition. DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT. 21 Aug., 1969 [3 Aug., 1968], No. 41812/69. Heading B1E. [Also in Division C2] A catalyst comprises nickel, cobalt, iron, bismuth, phosphorus, molybdenum and oxygen and contains additionally tantalum oxide or samarium oxide, preferably in a quantity of 0.2 to 5%. The catalyst may be supported, e.g. silica or a stratified lattice silicate of the montmorillonite type and may be granulated for use in a fluidised bed. The surface area of the catalyst is preferably 2 to 10m<SP>2</SP>/g.
Patent GB-1087930-A (GB)
Title: Improvements in data storage devices
IPC: G11C11/14
Filed: 1966-09-20
Abstract: 1,087,930. Magnetic data storage devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Sept. 20, 1966 [Oct. 4, 1965], No. 41822/66. Heading H1T. [Also in-Division H3] A storage device consists of two magnetic films, eachbeing disposed in the self-demagnetizing field of the other and having a thickness such that its self demagnetizing field is a substantial portion of the field required to saturate the film, one of the films (the read film) being of anisotropic material and the other (the storage film) exhibiting coercivity parallel to the hard axis of the read film. In the preferred embodiment the storage film 25 is also anisotropic and has its easy axis parallel to the hard axis of the read film 26. The two information representative states are: (a) a saturated condition in which the demagnetizing field H D3  of storage film 25 maintains the magnetization of read film 26 along the hard axis (Fig. 9); and (b) a completely or partially demagnetized state in which any remanent magnetization of the read film is directed along the easy axis, at right aHgles-to any remanent magnetization of the storage film (Fig. 8). The pair of films is associated with a pairof parallel conductors, one of which is a word conductor 57 and the other 60 serving as a bit drive conductor and as a sense conductor. When the data stored in any element in a row is to be changed the word conductor of a row is first pulsed to generate a field H w1  in the direction of the selfdemagnetizing field of the storage films, driving all the devices to their " 1 " states (partially demagnetized). The, word conductor is then pulsed to generate a field in the: opposite direction, and the bit drivers associated with the elements which are to store a " 0 " are coincidentally pulsed to generate a total field H w0  in these elements, sufficient to overcome the self-demagnetizing field and saturate the storage films. The word pulse alone is insufficient to drive the remainder of the elements from the " 1 " to the " 0 " state. Data is read out by supplying a relatively small pulse to a word line in the same direction as the " 0 " write pulse. This drives the read films of " 1 " storing elements towards saturation along the hard axis and induces an output in sense line 60, while " 0 " storing films are merely driven further into saturation. It is stated that a " 1 " may be represented by a a level of magnetization of the storage film which is a substantial proportion of the " 0 " magnetization level; for example 50%. The self-demagnetizing field of the storage film is preferably equal to the sum of the self demagnetizing and anisotropy fields of the read film along the hard axis, and the coercive force of the storage film is greater than or equal to the anisotropy field of the read film. Switching of the storage film takes/place by a parallel-mode operation (domain wall motion) rather than by rotation.
Patent GB-1359226-A (GB)
Title: Propylene carbonate medicament base composition
Inventor: SHASTRI S
IPC: A61K47/00
Filed: 1971-09-08
Abstract: 1359226 Medicament base compositions SYNTEX CORP 8 Sept 1971 [29 Oct 1970] 41932/71 Heading A5B A composition, useful as a medicament base, consists essentially of (a) from 0.1 to 30 weight percent propylene carbonate; b) from 30 to 99.5 weight percent petrolatum or polysiloxane or mixtures thereof; c) compatible cosolvent and coupling agent, the concentration of which in combination with the propylene carbonate is from 0.5 to 70 weight percent; (d) from 0 to 45 weight percent pharmaceutically acceptable surfactant; (e) from 0 to 20 weight percent thickener: and (f) from 0 to 25 weight percent penetrant. The pentrolatum may be a paraffinic mineral oil or paraffin wax; and the polysiloxane may have organic moieties such as C 1-8   alkyl, C 1-8  alkenyl, phenyl, alkyl-substituted phenyl, and phenyl alkyl (e.g. benzyl) attached to the polysiloxane, dimethylpolysolixane being preferred; the compatible cosolvent and coupling agent may be chosen from mono-, di- or poly-hydric alcohols, alkyl ethers of glycols, polyethylene or polypropylene glycol, esters of aliphatic mono- and di-basic acids and mono-, di- and polyhydric alcohols, sugar alcohols or a sterol such as cholesterol; the surfactant may be anionic, cationic, amphoteric or nonionic; the thickener may be colloidal alumina or silica, alginic acid or derivatives thereof, carboxyvinyl polymer, cellulose derivatives (such as methyl cellulose, hydroxyethyl cellulose or sodium carboxymethyl cellulose), gelatin, gums (such as agar, tragacanth, acacia or guar gum), egg yolk, lecithin, pectin, thixcin or resins (such as ethyleneoxide polymers); and the penetrant may be a dialkyl sulphoxide, dimethyl-formamide, dimethylacetamide, tetrahydrofuran or tetrahydrofurfuryl alcohol. The composition may also contain beeswax, spermaceti, paraffin waxes, fatty acids, alcohols and amides; a penetration aid such as squalene or acetylated lanolin fractions and/or a preservative. The composition may contain a therapeutic agent for topical application such as an antibiotic, e.g. oxytetracylcline, chlorotetracycline, streptomycin, bacitracin, chloramphenicol or tyrothricin; a steroid; an antihistamine such as prophenpyridamine maleate or diphenhydramine hydrochloride; an anaesthetic such as benzocaine or lidocaine; an antibacterial such as iodine, nitrofurazone, sulphanilamide and derivatives, or benzalkonium chloride; a fungicide such as undecylenic acid; coal tar, balsum Peru, ammoniated mercury, chrysarobin, ichthammol or sulphur.
Patent GB-1060020-A (GB)
Title: Wellhead connector
IPC: E21B33/038
Filed: 1965-10-04
Abstract: 1,060,020. Pipe couplings. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Oct. 4, 1965 [Oct. 5, 1964], No. 42025/65. Heading F2G. [Also in Division E1]  A wellhead connector comprises a housing 35, latches 53 on the housing and urged by springs 54 into engagement with a well member 51 and an expansible seal 71 carried by the housing and adapted to grip the member 51. The latches may be retracted by hydraulic pressure, and held in the retracted position by locking dogs 57. The fluid to expand the seal and retract the latches is supplied by a line 74. The housing is carried by a marine conductor 32 and the member 51 is connected to a flexible joint 30 or other part of a drilling wellhead mounted on a submerged casing head. Reference has been directed by the Comptroller to Specification 977,641.
Patent GB-1093041-A (GB)
Title: Paper
IPC: C09C1/00
Filed: 1964-10-15
Abstract: Newsprint or similar light-weight publication paper is made from at least 60% of groundwood pulp and a filler pigment that is hydrated silica or prenucleated sodium aluminosilicate or a combination of the two.  The pigment may be added to an aqueous slurry of the pulp.