baber/WOPTO huggingface dataset:
Patent GB-1440776-A (GB)
Title: Electron-beam apparatus
IPC: H01J3/02
Filed: 1973-10-01
Abstract: 1440776 Cathode constructions PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 1 Oct 1973 [3 Oct 1972] 45772/73 Heading H1D An electron beam source comprises a field emission wire cathode 2, an anode 9, means for moving the wire to maintain its tip in a fixed position with a constant radius of curvature of 0À2 to 2 Á, and an auxiliary radiation source 8 which directs radiation on to the tip to heat it. The wire is supported and moved by two pairs of jaws 50, 51; 59, 60. Initially the lower jaws are open and the position of the tip determined by wire 58 which pulls 53 against springs 54, 55; 56, 57. When the limit of movement of support 53 is reached jaws 59, 60 close and the others open, support 53 returns to its original position and the process is repeated. The jaws are at right angles to ensure that the cathode is accurately positioned after a few operations. The jaws and position of support 53 are controlled by passing heating current through wires 62, 63 and 58. The current is determined by the difference between the measured and desired current to the first anode. This provides compensation for slowly varying parameters. Rapid adjustment is made using a shutter in the radiation path moved by a signal proportional to the current to the second anode. The device is used in scanning and transmission type electron microscopes, electron beam machining apparatus and microanalysers.
Patent GB-968462-A (GB)
Title: Reactive resins containing unsaturated groups
Inventor: WORRALL ROY
IPC: C08F2/00
Filed: 1961-12-21
Abstract: Reactive resins are produced by introducing unsaturated acyloxy groups derived from acrylic or an alpha-substituted acrylic acid into a starting material having the structure of a copolymer of an olefinic hydrocarbon with an unsaturated alcohol or with an unsaturated alcohol at least partially esterified by a saturated acid, either by esterification of hydroxyl groups to form unsaturated acyloxy groups, or by the replacement of saturated acyloxy groups by unsaturated acyloxy groups.  The olefinic hydrocarbon component of the copolymer may be ethylene, propylene, 1-butene, isobutene, 1-hexene, 2,2,4-trimethylpentene-1 cyclopentene, cyclohexene, styrene, butadiene, isoprene or hexadiene.  The other component of the starting copolymer may be vinyl, allyl, methallyl or crotyl alcohol or 2-cyclohexene-1-ol, or an ester thereof with an aliphatic or aromatic mono- or di-basic acid. The examples describe the preparation of copolymers having the structure of ethylene/ vinyl alcohol or acetate/vinyl acrylate or methacrylate copolymers by reaction between ethylene /vinyl alcohol and/or acetate copolymers and acrylic and methacrylic acids and mixtures thereof with acetic anhydride, and with methacrylic anhydride methyl methacrylate and methyl and ethyl acrylates.
Patent GB-1041546-A (GB)
Title: Phase detector circuits
IPC: H03D13/00
Filed: 1963-11-22
Abstract: 1,041,546. Phase detectors; automatic phase control systems. RADIO CORPORATION OF AMERICA. Nov. 22, 1963 [Dec. 3, 1962], No. 46140/63. Heading H3A. An insulated-gate field-effect transistor comprises a gate electrode 46 separated by a high resistance silicon dioxide layer from a silicon substrate having source and drain electrodes 52, 50 across which a sinewave or sawtooth input signal from a source 54 to be controlled in phase is applied to produce a bidirectional current flow between the electrodes 52, 50. A second, reference pulse train input is applied to the gate electrode 46 to alter the relative magnitude of the two directional current flows so that from one electrode 50 a D.C. output is derived indicating the phase difference between the inputs and may be used for automatic frequency or phase control of the source 54. The gate electrode 46 is connected to the operating electrodes 52, 50 through equal resistors 74, 72 but if the transistor is not perfectly symmetrical, the resistors 74, 72 may be made unequal or the centre tap of the input transformer 56 may be displaced off-centre to produce zero output from the phase detector in the absence of the reference signal. In a modification electrode 52 is earthed and capacitor 62 dispensed with, an unbalanced phase detector being produced.
Patent GB-1525398-A (GB)
Title: Production of electrical conductors
IPC: H01B13/00
Filed: 1975-11-07
Abstract: 1525398 Automatic control of resistance EVG ENTWICKLUNGS-U VERWERTUNGS GmbH 7 Nov 1975 [19 Nov 1974] 46180/75 Heading G3R The resistance per unit length and the temperature of an electrical conductor are measured during production. The measured resistance value is corrected for temperature and then compared with a desired value to form an error signal which is used to control the cross-sectional area of the conductor. As shown in Fig. 1, a conductor 17 is made by twisting together wires from three spools 12 in a head 15. The conductor is passed through compactor rolls 13 and an additional roll stand 14 by a draw plate 20, and is then fed to a sensing device 1 which intermittently engages the conductor and moves with it to measure its resistance per unit length. The device 1 also has a radiation thermometer which measures the temperature of the conductor 17. The measured resistance value is corrected for temperature in a circuit 2, and then compared with a desired reference value in a comparator circuit 3. The resulting control signal passes to a programmed unit 4 which selects one or more adjustment control circuits 5, 6, 7, 18 to cause the cross-section of the conductor 17 to be varied in order to produce the desired resistance. The circuits 5, 6 operate to form hydraulic or pneumatic signals in controls 9, 10 which vary the application of spool brakes 16 or the setting of the compactor rolls 13, respectively. Circuit 7 adjusts the gap at the additional roll stand 14, while circuit 18 controls the power or speed of the drive 19 for the draw plate 20.
Patent GB-1120317-A (GB)
Title: Electron beam deflection circuit
IPC: H03K4/84
Filed: 1965-11-02
Abstract: 1,120,317. Semi-conductor saw-tooth generating circuits. RADIO CORPORATION OF AMERICA. 2 Nov., 1965 [16 Nov., 1964], No. 46331/65. Heading H3T. A retrace driven deflection current generator comprises a circuit arrangement substantially as shown, the component 32 (which in the embodiment is a large capacitor) being a voltage source such that diode 31 limits the voltage swing across the deflection coils. As described, a thyristor 22 is rendered conductive at the end of the trace so that a capacitor 27 rapidly discharges in resonant manner through inductor 25. The decreasing voltage across the capacitor acting through a capacitor 28 cuts off diode 31 allowing the deflection coils to execute a resonant retrace through 28, 25 and the thyristor. At the end of the retrace the voltage across the coils rises until it is clamped by the diode to the voltage across capacitor 27, and a linear trace is thus produced. Capacitor 32 is thus recharged during the early part of the trace, and capacitor 27 is recharged from battery 26 and subsequently from source 32 through a large inductor 34. The thyristor continues to conduct into the trace period but is extinguished by oscillation in a circuit comprising inductor 25 and the two capacitors 27 and 28 which are effectively connected in parallel by diode 31. Coupling capacitor 29 may be dimensioned to effect S-shaping of the trace and circuit 35, 36 damps oscillations initiated by the thyristor switching off.
Patent GB-1513157-A (GB)
Title: Corrosion resistant steels
IPC: C22C38/44
Filed: 1974-10-28
Abstract: 1513157 Corrosion resistant steel LANGLEY ALLOYS Ltd 21 Oct 1975 [28 Oct 1974] 46430/74 Heading C7A A corrosion resistant steel, with improved resistance to non (oxidizing) strongly acidic conditions and high resistance to oxidizing and chloride-containing environments contains. Cr 26À5 - 30À0 (pref 27À5-29À5) Ni 7À7 - 14 (pref 7À5- 9À5) Mo 2À0 - 5 Cu 0À5 - 5 Si 0À2 - 2 Mn 0.2 - 4 C 0À01 - 0À1 N 0À1 - 0À3 Fe Balance  The structure consists of 40-60% austenite grains in a ferrite matrix substantially free of other precipitated flaws.
Patent GB-1003210-A (GB)
Title: Method of magnetic recording
IPC: G11B20/14
Filed: 1963-11-25
Abstract: 1,003,210. Electric digital data-storage. SPERRY RAND CORPORATION. Nov. 25, 1963 [Dec. 5, 1962], No. 46522/63. Heading G4C. In a system for recording on a magnetic drum or tape binary data which is represented by positive and negative pulses, an additional pulse of opposite polarity is generated between any pair of pulses of the same polarity, the additional pulse being positioned at a time less than half the inter-digit period after the first pulse of the pair. As shown, Fig. 2, sources 22, 36 of " 1 " and " 0 " signals set and reset respectively a flip-flop 24 whose outputs are applied after a delay to the inputs of a flip-flop 30 so that in operation, the flip-flops 24, 30 register successive bits to be recorded. If the two bits are the same, a gate 46 is opened at a time immediately succeeding the recording of the first bit, in response to a timing signal slightly delayed at 27, thereby causing a bit of the opposite polarity to be recorded immediately following the first bit of the equal pair of bits. The readout arrangements may be as described in Specification 994,888. Specification 985,002 also is referred to.
Patent GB-1437526-A (GB)
Title: Extensible jib crane
IPC: B66C23/687
Filed: 1973-10-05
Abstract: 1437526 Luffing arm apparatus INTERNATIONAL HARVESTER CO 46546/73 Heading B8H [Also in Division F2] A crane has an extensible jib which consists of a main jib 6 and an extendable extension jib 12 which is movable relative to the main jib 6 by a drive mechanism, the latter comprising a pair of rollers 17, 18 which are journalled on the lateral sides of the main jib 6 and disposed between the underside of the jib extension 12 and the main jib 6, a further roller 16 being journalled in the arms 28 of a U-shaped lever, the arms 28 being mounted on the main jib 6 at a common pivot 31 while the cross member 32 of the U-shaped lever passes through the main jib 6, a reversible hydraulic motor 26 which is mounted on the main jib 6 having a sprocket 25 on its shaft which is coupled by a chain 24 to further sprockets 21, 22, 23 located respectively on axial extensions of the rollers 16, 17, 18, the drive mechanism further comprising an hydraulic ram 33 mounted on the main jib 6 and connected to the cross member 32 and being also hydraulically connected to the motor 26 so that when the motor 26 is actuated to drive the rollers 16, 17, 18 through the respective sprockets 21, 22, 23 and the sprocket 24, the ram 33 presses the cross member 32 downwardly such that the roller 16 presses on the top of the extension jib 12 whose bottom surface is thereby pressed into engagement with the rollers 17, 18 and thus the three rollers by their rotation cause movement of the extension jib 12. A brake mechanism 35 for holding the jib 12 in a required position relative to the main jib 6 comprises a brake shoe in the form of a friction pad 37 mounted on a back plate 36 connected to a pressure plate 42 which is attached to the piston-rod 39 of an hydraulic ram, a pair of pressure springs 40 which act between the cylinder 38 of the ram and the pressure plate 42 urge the pad 37 into frictional contact with the upper surface of the extension jib 12 during non-operation of the motor 26, but when the latter is actuated to cause movement of the extension jib 12 fluid is supplied to the piston of the cylinder 38 to raise the piston and thus the friction pad 37 against the action of the springs 40. Luffing of the extensible jib is effected by a ram (9), Fig. 1 (not shown).
Patent GB-1118025-A (GB)
Title: X-ray contrast agents
IPC: A61K49/04
Filed: 1965-11-03
Abstract: Novel compounds of the general formula <FORM:1118025/C2/1> in which R1 represents a straight chain or branched chain alkyl radical or an alkoxy alkyl radical, R11 and R111 each represent hydrogen atoms or methyl or ethyl radicals and Alk represents an alkyl radical (a) with at least four carbon atoms when R11 and R111 represent hydrogen or (b) with at least two carbon atoms when R11 and/or R111 represent an alkyl radical, are prepared either by esterification of the free acid or transesterification of an appropriate ester or by reaction of an appropriate triiodophenol with a reactive ester of an alpha-hydroxy fatty acid in the presence of a basic condensing agent.  a -Bromocaproic acid-b -methoxyethyl ester and a -bromocaproic acid isopropyl ester are prepared by esterification of the corresponding acids.
Patent GB-1364302-A (GB)
Title: Process for hot tin plating of metal components
IPC: C23C2/08
Filed: 1971-10-08
Abstract: 1364302 Coating with Pb and Sn F HECK 8 Oct 1971 [28 Nov 1970] 46916/71 Heading C7F Articles of Cu or Cu-based alloys contained in a rotating drum are dipped in molten Pb or Pb-Sn alloy rich in Pb, and subsequently in molten Sn or Sn-Pb alloy rich in Sn. The process may be performed in one heat, or with intermediate cooling; the resulting coating is readily solderable, and outward diffusion of Zn from a brass substrate is inhibited by barrier action of the Pb coating. In modifications (1) the first layer is applied by rotating the articles in a barrel of Pb (or Pb-Sn) powder, with or without fluxes, and for the second layer, Sn powder is added in the amount required to give the correct aggregate Pb/Sn ratio (2) the first layer is applied from a PbCl 2  melt or (3) Pb is applied electrolytically.
Patent GB-1014409-A (GB)
Title: Apparatus for checking the operation of a recirculating storage device
IPC: G11C21/00
Filed: 1964-11-19
Abstract: 1,014,409. Electric digital data storage. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 19, 1964 [Dec. 23, 1963], No. 47064/64. Heading G4C. Timing bits derived from synchronizing means during one cycle of a recirculating memory are stored in the memory during a succeeding cycle and their occurrence in the memory is compared with timing bits derived from the synchronizing means. Fig. 1 shows a memory 10 (magnetic drum, disc, tape loop, delay line or shift register) with provision for recirculation via AND gate 16, data input via AND gate 86, and data output via AND gate 90. A binary counter 34 counts pulses from oscillator 30 and controls logic shown to produce on line 70 (right side of Figure) check bits 0,0,1,0,0,1,1,1 when its count is 0,1,8,9,16,17,24,25 respectively. These check bits can be gated into the memory 10 by energizing the synch. input 94 to AND gate 88. As the check bits emerge from the memory again, they are compared in EXCLUSIVE OR gate 72 with the same check bits produced again by counter 34 and the associated logic. An error indication is given in the event of non- correspondence. Data bits present in memory 10 between the check bits cannot result in an error indication since the input 64 to AND gate 78 is ZERO during data bit times.
Patent GB-1388668-A (GB)
Title: Casings for accumulators
IPC: H01M2/02
Filed: 1972-10-13
Abstract: 1388668 Casings ROBERT BOSCH GmbH 13 Oct 1972 [15 Oct 1971] 47233/72 Heading B8P [Also in Division H1] An accumulator casing comprises at least two cell compartments 11, 12 Fig. 3, of thermoplastics material wherein an outer wall 113 of a first compartment abuts an outer wall 121 of a second compartment, which outer walls are mechanically joined by a dovetailed joint including a groove 14 in one wall and corresponding strip 15 in the other, and a common welded joint is provided across the edge of the walls 113, 121 which are adapted to receive a lid or cover. Preferably each relevant outer wall i.e. 113, 121, has at least one groove 14 and one strip 15. The common welded joint may be formed by an injection welded seam, Fig. 4 (not shown), which builds up the abutting walls until they are flush with the tops of the other walls. In another embodiment, Fig. 6, a cover 60 is injection welded on to cell compartments 30, 40 at the same time as weld seal 50 is formed across the edge of abutting walls 33, 41. The top regions 312, 412 of these walls are of reduced thickness and are chamfered at 313, 413 to form a groove. They are received in a groove 61 formed under the cover 60 and apertures 63 extend through cover 60 for injecting thermoplastics to form the seal. In this embodiment the dovetail grooves and strips do not extend the entire height of the walls.
Patent GB-1525808-A (GB)
Title: Aromatisation of coffee products
IPC: A23L27/10
Filed: 1976-11-15
Abstract: 1525808 Incorporating aroma gases into coffee products SOC DES PRODUITS NESTLE SA 15 Nov 1976 [24 Nov 1975] 47412/76 Heading A2B Soluble coffee solids are aromatised by contacting with a foamed emulsion made by mixing an aroma gas comprising non-condensible coffee volatiles (i.e. those not condensing at 0‹C or above under atmospheric pressure) under at least 5 kg/cm<SP>2</SP> pressure with an absorbent comprising an aqueous liquid and a liquid edible oil. The non-condensible volatiles may be obtained by roasting, grinding and steam stripping fresh coffee, cooling to 75-95‹C to remove steam and then cooling to 0-15‹C to produce a liquid concentrate, which may be used as said aqueous liquid, and an aroma gas stream; gases from grinders, roasters and extraction processes may also be used. In the absorbent, the aqueous liquid may include an encapsulating agent for the aroma gas, e.g. gum, alginate, gelatin, starch, soluble coffee solids, and the oil may be coffee oil. The weight ratios of gas:absorbent and aqueous liquid:oil may be 1:2-1:50 and 3:1-1:5 respectively. If desired the gas may be pre-compressed and the absorbent preemulsified. The mixing may be carried out at 5-40‹C and up to 15 kg/cm<SP>2</SP>. The foam may be circulated through a mixer to maintain its condition and may be partly recycled to the initial mixing stage. The foam density may be less than 0.8 gm/cc at 760 mm Hg and 10‹C. The foam may be contacted with dry- or extract-form soluble solids at 5-40‹C to produce 0.2-1 wt. % oil, based on the solids, in the product.
Patent GB-968163-A (GB)
Title: An improved plant fertilizer and process
IPC: C05D9/02
Filed: 1962-12-17
Abstract: A fertilizer comprises evaporated sea water, a solution thereof in fresh water, or diluted sea water.  Evaporated sea water may be applied to soil in an amount of 550-2,200 lb./acre.  A solution may contain 1,000-8,000 p.p.m. of evaporated sea water.  Diluted sea water may contain 25-225 lb. of sea water per 1,000 lb. of solution. The fertilizer may also contain ammonium nitrate, ammonium sulphate or urea.  The ratio of ammonium nitrate to sea water solids may be 8-80 to 200.  The ratio of ammonium sulphate to sea water solids may be 1-11 to 20.  The ratio of urea to sea water solids may be 5-40 to 200.
Patent GB-1104577-A (GB)
Title: Process for extracting oil from palm fruit and olives
IPC: C11B1/10
Filed: 1966-10-24
Abstract: A process for extracting oil from palm fruit or olives comprises passing the fruit into a multi-stage counter-current flow with an organic solvent which is miscible with water and in which oil is soluble, the fruit pulp being disintegrated in at least the first stage with medium to high intensity mixing sufficient to cause disintegration of the pericarp (fruit pulp) without significant breaking of the kernels, the temperature being such that the oil extracted is maintained in a liquid condition. The disintegration may be by a paddle-type mixer (see Division A2).  The solvent may be acetone or a 1:1:1 mixture of ethyl alcohol, ethyl acetate and acetone or a 4:2:1 mixture of ethyl alcohol, ethyl acetate and isopropyl ether.  The preferred temperature of operation is 50-55 DEG C.ALSO:The soft pericarp of olives or palm fruit is removed from the kernels and broken up by intensive mixing in the presence of a solvent for the oil contained therein.  In an example, the mixer comprises a 7 inch diameter by 10 inches high vessel with four 0.75 inch wide vertical baffles spaced round the wall, fitted centrally with an impeller having six vertical blades and an outside diameter of 4.5 inches, so that there is 0.5 inch clearance between the blades and the baffles.  The impeller may be rotated at 800 r.p.m.
Patent GB-1074486-A (GB)
Title: Improvements in or relating to electronic signal comparators
Inventor: WILLIS THOMAS GLANVILLE
IPC: H03M1/00
Filed: 1964-11-23
Abstract: 1,074,486. Analogue-to-digital converters. HAWKER SIDDELEY DYNAMICS Ltd. Dec. 2, 1965 [Nov. 23, 1964], No. 47630/64. Heading G4H. An analogue-to-digital converter adapted to compare an analogue signal with selected limit values, comprises a digital storage register, the output of which is converted to an analogue signal for comparison with the input signal, the output of the comparator normally causing the digital storage register to change until the feed-back voltage balances the input signal, there also being alternative inputs to the digital storage register for the entry of a digital representation of any selected limit, the output of the comparator indicating whether the input is more or less than this. The comparator consists of a simple junction, the difference being amplified (19, Fig. 2, not shown) and applied to a control circuit (12) which causes the register stages to set in turn and reset if the input is exceeded. The limit value is entered from terminals (25) through gates (28) and Or gates (26). When the line (29) is energized the gates (28) open to enter the limit value in register (11) and the control circuit is inhibited so that the normal balancing operation is suspended. The signal on line (30) indicates whether the limit value is exceeded or not.
Patent GB-1085841-A (GB)
Title: Improvements in or relating to methods of making magnesia refractory bricks
Inventor: WOODHOUSE DENNIS
IPC: C04B35/03
Filed: 1962-12-18
Abstract: Fired refractory bricks are made by mixing coarse and fine fractions of a dead burned magnesia with an oxide of lithium, sodium or potassium, or a compound which yields the oxide on heating at temperatures below 1200 DEG  C. in amount 0.2-3% as oxide, and thereafter adding to the mixture a liquid temporary binder forming the mixture into bricks and then firing the bricks. Coarse and fine fractions may be all retained and all through respectively B.S. 72 in proportions variable from 90:10 to 20:80. The fine fraction may have a specific surface of 0.1-1.0 sq. metres/gm.  The magnesia is precipitated from sea water, is preferably of not less than 90% MgO and may contain below 2% ferric oxide.  The oxide or compound e.g. Na2CO3, may be premixed with either the coarse fraction or the fine fraction at the later stages of milling or added to the mixtures of both, and has the same particle size as the fine magnesia.  2-10% of the liquid, temporary bond, e.g. a solution of sulphite dye, magnesium sulphate or sulphuric acid may be added and the mixture briquetted at 8 tons/sq. inch pressure. The bricks may be encased with metal, or metal reinforced internally, or provided with means for suspension in roofs of furnaces.
Patent GB-1101368-A (GB)
Title: Improvements in external vibrators
IPC: B06B1/16
Filed: 1966-10-25
Abstract: 1,101,368. Vibrators. H. WACKER and P. WALKER. 25 Oct., 1966 [15 Nov., 1965], No. 47812/66. Heading F2X. An external vibrator comprises imbalances 1 mounted on eccentric pins 6 driven from a drive shaft and rolling around tracks in the housing of the vibrator, each imbalance being sandwiched between an abutment ring 2 and a cover 3 which are coated with a plastics material 4 in order to reduce friction. Bushes 7 of a plastics material are fitted into the bores 5 of the imbalances.