baber/WOPTO huggingface dataset:
Patent GB-1418652-A (GB)
Title: Control apparatus
IPC: G05D1/00
Filed: 1972-12-07
Abstract: 1418652 Selective signalling MOOG Inc 7 Dec 1972 [28 Jan 1972] 56464/72 Heading G4H [Also in Division G3] In control apparatus, analogue commands are encoded, and multiplexed together with a station code, with transmission as binarymodulation of a carrier over a non-conductive data link to a receiver at which station code recognition and conversion of the analogue commands back to analogue form are performed. At a central station, n manually-controlled potentiometers provide analogue input control voltages which are selected in turn by a commutator, converted to digital form, then combined by a second commutator into a serial word with a station code, sync. bits and parity bits. For example, the word can consist of a 4-byte station code and one control byte for each of 8 ( = n) inputs. Each byte of the station code contains 5 bits of the binary-coded station address, two sync. bits and a parity bit. Each of the control bytes contains a 4-bit binarycoded value, a sign bit, two sync. bits and a parity bit. The word is provided by the second commutator in NRZ form which is then converted to a form in which each 1 bit is represented by a transition and each 0 bit by no transition. This form is used to frequencyshift-modulate a carrier which is then sent by radio to a remote station where it is converted to D.C. then to pulse/no-pulse form to feed a commutator. The latter conversion and the commutator are controlled by a phase-locked slave clock and sync. detector. The comutator feeds a hold circuit for each of the n channels (inputs), a station code recognizer, and a parity checker. Each hold circuit feeds a D-to-A converter and amplifier which via a current-decay-to-zero circuit controls a proportional electrohydraulic flow control servovalve coil associated with a hydraulic actuator producing a linear or rotational output motion of speed determined by the D-to-A converter output to correspond proportionately to the corresponding potentiometer setting at the central station. If the station code received is incorrect or there is a parity error the hold circuits are reset and the current-decay-to-zero circuits are controlled to cause their outputs to decay to zero.
Patent GB-1208195-A (GB)
Title: Process for producing benzodiazepine derivatives
IPC: C07D209/04
Filed: 1968-11-29
Abstract: 1,208,195. Benzodiazepine derivatives preparation. SUMITOMO CHEMICAL CO. Ltd. 29 Nov., 1968 [1 Dec., 1967; 13 Feb., 1968], No. 56686/68. Heading C2C. Compounds of the general formula (R<SP>1</SP> = H, C 1-3  alkyl or haloalkyl, C 3-5  alkenyl, (C 3-6  cycloalkyl)methyl; R<SP>2</SP> = C 1-3  alkyl, benzyl, phenyl; R<SP>3</SP>'<SP>4</SP> = H, halogen, C 1-3  alkyl, haloalkyl or alkoxy) and their salts are prepared by reacting a compound of the formula or a salt thereof with an oxidizing agent, optionally followed by salt formation. Reference has been directed by the Comptroller to Specifications 972,968 and 1,050,401.
Patent GB-1276517-A (GB)
Title: Analogue to digital converters
IPC: H03M1/00
Filed: 1969-11-20
Abstract: 1276517 Selective signalling INTERNATIONAL BUSINESS MACHINES CORP 20 Nov 1969 [23 Dec 1968] 56773/69 Heading G4H A dual-ramp voltage digitizer of the type in which first the unknown voltage is applied to an integrating circuit for a fixed period, and then a reference voltage of opposite polarity to the unknown voltage is applied to the integrating circuit and the time taken for the output of the integrator to fall to zero under the application of the reference voltage is determined by counting relatively high frequency clock pulses, is characterized in that a cyclical variation is superimposed upon both the unknown input voltage and the reference voltage. As described, an input address causes a control means 18, Fig. 1, via a matrix 14, to open one of a number of gates, such as 40, to select one of a number of input circuits such as 10a, each of which stores, across a capacitor, such as capacitor 34, an unknown input voltage. The selected input voltage is chopped by FET's 42, 44, 46 and transformers 36, 38 under the control of a square wave oscillator 41, and applied to an integrator 16 for a fixed period determined by the time taken for a counter 20 to count clock pulses from an oscillator 56 until it is full to capacity. When the counter is full the gate 30 which selected the required input voltage is closed and a reference gate 76 is opened to allow a chopped reference signal to pass to the integrator. At the same time the counter 20 continues counting clock pulses from the oscillator 56 and counting ceases when the output of the integrator, as detected by a comparator 24, reaches zero. The count then reached is a measure of the input voltage. Both a positive and a negative reference voltage are available, the appropriate one being selected by a sign trigger 64 at the end of the fixed period during which the unknown voltage is integrated, in order to oppose the input voltage. In a modification (Fig. 3, not shown), in order to increase the speed of operation, two reference voltages are used, the larger being applied to the integrator first until its output falls to a predetermined threshold level, whereupon the smaller is applied in its place.
Patent GB-1281893-A (GB)
Title: Improvements in or relating to gooseneck couplings
Inventor: ROBERTS RICHARD WALTER
IPC: B62D53/06
Filed: 1968-12-02
Abstract: 1281893 Gooseneck couplings; trailer vehicles; stabilizers B DIXON-BATE Ltd 20 Jan 1970 [2 Dec 1968] 57047/68 Headings B7B B7J and B7T A gooseneck for coupling an elevatable fifth wheel 11 mounted on a tractor to a trailer vehicle 12 comprises two transversely spaced L-shaped frames 22 connected by cross struts 23, 24 and mounting at one end a king pin 21 for connection to the fifth wheel and at the other end a prong 25 insertable in a socket 15 of the trailer vehicle, there being pivotally mounted on the frames 22 a strut 28 biased by a spring 31 to the out-of-use dot-dash position and movable by a ram 30 to a depending position where it is adapted to engage on a cross-bar of the tractor to support the gooseneck when not connected to the trailer vehicle. When the gooseneck is notconnected to the tractor L-shaped support legs 35 may be pivoted from their horizontal outof-use position to a vertical in-use position to support the front of the gooseneck. The single prong 25 may be replaced by a pair.
Patent GB-1156240-A (GB)
Title: Perphthalic Acid Compositions
IPC: C11D3/39
Filed: 1967-12-18
Abstract: 1,156,240. Perphthalic acid compositions. PPG INDUSTRIES Inc. 18 Dec., 1967 [19 Dec., 1966], No. 57347/67. Heading C2C. The invention comprises compositions containing particles of a perphthalic acid encapsulated in a protective shell of a hydrated watersoluble inorganic salt which retains water of hydration at temperatures below 30 C. but loses at least a portion of the water of hydration at temperatures from 60 to 150 C. Of particular interest are the compositions in which the perphthalic acid is diperisophthalic acid and the salt is a hydrated magnesium sulphate. The perphthalic acid composition may be made by suspending particles of salt having less water of crystallization than is present in the encapsulated product in an upwardly rising inert gas stream, and feeding the perphthalic acid in aqueous medium to the suspended particles to encapsulate the perphthalic acid in the hydrated salt.
Patent GB-574704-A (GB)
Abstract: 574,704. Gun sights. NASH, A. G. FRAZER-, and WHITAKER, A. April 19, 1940, No. 7099. [Class 92 (ii)] Relates to sighting apparatus for aircraft guns in which the gun and sight are synchronously moved and the corrections in elevation and training for relative angular speeds of gun and target are effected by the spring- controlled precessional movements of two gyroscopes in horizontal and vertical planes respectively, which movements are proportional to such speeds. Further, the apparatus includes means for multiplying the speeds by the time of flight of the projectile and deflecting the line of sight accordingly. The invention consists in varying the tension of the controlling spring or springs of the gyroscopes in accordance with the time of flight of the projectile and other factors derived from a separate computor. In the form shown, a main frame 1, suspended by pivots 2 on arms 3 of the computor (not shown), carries an elevation correction frame 4, movable on a horizontal axis 5 under the precessional torque of a gyroscope housed in the frame, and a similar training correction frame 4a movable on a vertical axis 5a by the precessional - torque of a second gyroscope. The gyroscopes are driven at a constant speed by synchronous electric motors connected with a controlled - frequency alternating current supply through leads 8, 8a. Each of the frames 4, 4a by its movement operates by the jet action of air under pressure admitted at 11, 15 to influence one or the other of bellows 16, 16a acting through knife edges 18, 18a on a yoke 20 which by arms 23 communicates movement to the sight through a Bowden wire O. The frames 4, 4a are connected by cords 27 passing over pulleys 28 to one end of a spring 33, the other end of which is connected to an arm 35 adjusted about a pivot 36 by a pin 38 moved in accordance with the computed time of flight. The computor (not shown) also imparts through the pin 38 corrections to the line of sight to compensate for direction of fire, air density, indicated air speed and range.
Patent GB-1396810-A (GB)
Title: Process for the preparation of 2,3,4,5,6,7-hexahydrocyclopenta-e -1,3-oxazine-2,4-diones
IPC: C07C55/40
Filed: 1973-12-12
Abstract: 1396810 2,3,4,5,6,7 - Hexahydro - cyclopenta[e]-1,3-oxazine-2,4-diones BAYER AG 12 Dec 1973 [13 Dec 1972] 57525/73 Heading C2C A process for the preparation of a 2,3,4,5,6,7- hexahydro - cyclopenta[e] - 1,3 - oxazine - 2,4- dione of the general Formula I in which R is alkyl with up to 3 carbon atoms, R<SP>1</SP> is alkyl, optionally substituted cycloalkyl, alkenyl, alkynyl, haloalkyl, alkoxyalkyl, alkylthioalkyl, alkoxycarbonylalkyl, aralkyl, cycloalkyl-alkyl or optionally substituted aryl, and n is 0, 1, 2, 3, 4, 5 or 6, comprises reacting an adipic acid dihalide of the general Formula II in which R is hydrogen or alkyl with up to 3 carbon atoms, and X is halogen, with an isocyanate of the general formula in which R<SP>1</SP> has the meaning stated above, in the presence of a tertiary organic base, and optionally in the presence of a solvent, at a temperature of from 80 to 180 C. Suitable tertiary organic bases are pyridine, α-, #- and γ-picoline, lutidine, collidine, quinoline and N,N-diethylaniline. Suitable solvents are hydrocarbons, chlorinated hydrocarbons and ethers. The adipic acid dihalide starting material of Formula II may be prepared by reacting isobutyronitrile and 1,3-bromochloropropane in the presence of phenyllithium and diethylamine to produce α,α-dimethyl-#-chlorovaleric acid nitrile, converting the latter to α,α-dimethyladipic acid dinitrile with sodium cyanide, followed by hydrolysis to yield α,α-dimethyladipic acid and reaction with a thionyl halide to produce the adipic acid dihalide. The compounds of Formula I may be reacted with ammonia to produce the corresponding uracil.
Patent GB-1334467-A (GB)
Title: Reagent for the detection of lactate dehydrogenase
IPC: C12Q1/26
Filed: 1971-11-23
Abstract: 1334467 Diaphorase BOEHRINGER MANNHEIM GmbH 13 Dec 1971 [16 Dec 1970] 57696/71 Heading C3H [Also in Division B1] Diaphorase is obtained by extracting the homogenized press residue of pigs' hearts with dilute ammonium sulphate solution, recovering from the extract the fraction which is insoluble in 1À6 to 2À8 M ammonium sulphate solution, dissolving and dialysing, adding polyethyleneimine, discarding the precipitate, heating the filtrate and again discarding the precipitate formed, adsorbing the diaphorase from the filtrate on a weakly acidic cation exchanger and eluting.
Patent GB-1397660-A (GB)
Title: Crusher bowl clamping system
IPC: B02C2/04
Filed: 1973-12-17
Abstract: 1397660 Gyratory crushers REXNORD INC 17 Dec 1973 [24 May 1973] 58311/73 Heading B2A  A gyratory crusher comprises a circumferential main frame 10, a bowl 20 mounted for .movement in the main fame 10, a plurality of rocker arms 46 disposed about and pivotally mounted on the main frame 10 or on a part supported by the frame viz a tilting ring 16 mounted on a flange 14 of the main frame 10. The inner ends 50 of the arms 46 clamp the bowl (by a clamp ring 52). Spring 33 and jacks 36, bias the outer ends of the rocker arms downwards and the inner ends 50 upwards by push rods 66 and bolts 40 so as to clamp the bowl. A top cap 60 has an outer circumferential shelf portion 62 which covers the rocker arms and the exterior of the bowl, with the lower portion 62 of the cap being in sealing relation with the main frame or with the part supported by the main frame. The tilting ring 16 is movable upwardly to free tramp material.
Patent GB-1452319-A (GB)
Title: Silver halide photosensitive material
IPC: G03C1/815
Filed: 1973-12-19
Abstract: 1452319 Photographic silver halide materials KONISHIROKU PHOTO INDUSTRY CO Ltd 19 Dec 1973 [28 Dec 1972] 58865/73 Heading G2C High boiling hydrocarbon solvents, for the incorporation of photographic additives such as U/V-absorbers and colour couplers into photographic silver halide materials, have the general formula:- where R 1 , R 2 and R 3  are each hydrogen, alkyl or cycloalkyl, or R 1  and R 2  form a hydrocarbon ring, said hydrocarbon solvents containing at least 9 carbon atoms. The photographic additives e.g. U/V-absorbers are dissolved in one or more of the above solvents together with a lower boiling solvent such as ethyl acetate, and the solution emulsified into the coating composition e.g. aqueous gelatine and coated on to the photographic material e.g. to form a protective layer.
Patent GB-1414468-A (GB)
Title: Arrangement and method for controlling a gas turbine system
Inventor: GREUNE C
IPC: F02C9/28
Filed: 1972-12-20
Abstract: 1414468 Gas turbine plant - fuel control MOTOREN-UND TURBINEN-UNION MUNCHEN GmbH 20 Dec 1972 [21 Dec 1971] 58932/72 Heading FIG [Also in Division G3]  A control system for a gas turbine engine comprises a first control unit R1 for controlling fuel flow to the fuel metering device 18, a second control unit R2 for increasing or reducing the fuel flow determined by the first control unit, a sensor for detecting variations in the controlling variable T of the second control unit which is subject to lag, means for automatically converting the variation in fuel flow into a variation of the controlling variable of the second control unit, making it variable in time, and means for automatically imposing the latter variation on the deficiently sensed instantaneous value of the control variable. The control variable N of the first control unit is turbine rotational speed and the control variable T of the second control unit is temperature at a point downstream of the combustion system. The control variables may alternatively be pressure ratios or temperature ratios of the engine.
Patent GB-1207757-A (GB)
Title: A spring-end grinding machine
IPC: B24B7/16
Filed: 1968-12-13
Abstract: 1,207,757. Grinding. MASCHINENFABRIK KARL HACK K.G. 13 Dec., 1968 [15 Dec., 1967], No. 59403/68. Heading B3D. A machine for grinding spring ends comprises two coaxial grinding wheels 6, 7 mounted on a machine frame 1, one above the other and at least one of which is axially adjustable, and two rotatably mounted transporting plates 13, 14, Fig. 3, arranged to receive springs and hold them for grinding, rotational movement of each transporting plate when in the working area of the grinding wheels carrying the springs between the wheels, the plates being mounted on separate carriages 9a, 9b, the carriages being detachably connected to one another and movable together on the machine frame in a straight line parallel to the planes of the grinding wheels, between two end positions in each of which one transporting plate lies in a working position between the two grinding wheels, and the other transporting plate lies in a charge and discharge position. In one embodiment the plates 13, 14 which comprise pairs of discs 22, 23, Fig. 2, with apertures 24 for receiving springs 25, are mounted side by side on the carriages which are movable along a dove-tail section guide 10 of the frame 1 by an hydraulic cylinder device 11 or mechanically or manually. The upper surfaces 12 of the carriages are coplanar with the upper surface of the wheel 7 and with a table 20 which retains the springs in the apertures 24. Apertures 27, 28, Fig. 3, in the carriages, which are closable by flaps, allow the springs to be discharged from the plates 13, 14. The plates 13, 14 may be rotated at different speeds depending on their positions. A carriage member 9 is composed of the carriages 9a, 9b each of which carries a plate 13, 14 respectively and the drive therefor. The carriages are separable to permit removal of the grinding wheels between them. In a second embodiment, the plates 13, 14 are suspended from the carriages which travel on a guide located above the grinding wheels.
Patent GB-1269676-A (GB)
Title: Self-baking electrodes
Inventor: CAVIGLI MARIO
IPC: H05B7/09
Filed: 1969-12-08
Abstract: 1,269,676. Self-baking furnace electrodes. MONTECATINI EDISON S.p.A. 8 Dec., 1969 [9 Dec., 1968], No. 59858/69. Heading H5H. [Also in Division G3] A self-baking furnace electrode 20 is surrounded by hot gases whose controlled temperature is at least that of the softening point of the raw paste 1 in order to maintain a column 2 of molten paste of length 4-5 times the electrode diameter. The supporting shell 5 of the electrode is surrounded by a cylindrical sleeve 8 and hot air is passed into the annulus 9 so formed from a conduit 10. A temperature measuring device 14 is connected via a thermoelectric converter and an electric amplifier (not shown) to a servocontrol mechanism 15 which controls the heater 13 for the incoming hot air. Mechanism 15 comprises relays or electro-pneumatic devices. A fan-blower 12 supplies air to the conduit 10 via the heater 13. Sleeve 8 is open at its lower end and sealed by asbestos rope packing 11 which allows slipping of the electrode 20 relative to the sleeve, when necessary. Current is supplied to the baked zone 4 of the carbon electrode by plates 6 clamped against the shell 5 by a metal ring 7. The electrode is used in processes for making Fe-Mn and Fe-Si-Mn alloys, or Fe-Cr alloys, or for producing calcium carbide or silicon. Italian Patent No. 606,568 is referred to.
Patent GB-1373230-A (GB)
Title: Process for producing terephthalic acid
IPC: C07C51/265
Filed: 1971-12-23
Abstract: 1373230 Terephthalic acid MITSUI PETROCHEMICAL INDUSTRIES Ltd 23 Dec 1971 59918/71 Heading C2C In an otherwise known process for the production of terephthalic acid in which p-xylene is oxidized in the liquid phase in the presence of acetic acid with either molecular oxygen or a gas containing molecular oxygen and in the presence of a cobalt containing catalyst the improvement wherein the vapour effluent from the reactor, which contains a non-condensable gas, steam and acetic acid vapour, is fractionally distilled to recover acetic acid which is recycled to the reactor and terephthalic acid is crystallized and removed from the liquid reaction product the resultant mother liquor being recycled, without distillation, to the reaction. Crystallization of terephthalic acid may be achieved by cooling or by flashing the hot reaction product. The vapour obtained by flashing is an acetic acid solution which may be used to wash the crystalline product prior to drying.
Patent GB-1363770-A (GB)
Title: Continous process for producing copper
IPC: C22B5/08
Filed: 1971-12-23
Abstract: 1363770 Producing copper from matte MITSUBISHI KINZOKU KOGYO KK 23 Dec 1971 [28 Dec 1970] 60011/71 Heading C7D A continuous process for producing copper from a matte comprises continuously charging the matte into a smelting furnace while blowing air, oxygen or mixtures thereof through the melt bath and adding a calcareous flux. The calcareous flux contains limestone or a mixture of silicic ore and limestone, and provides higher rates of reaction between the matte and the oxidizing agent and minimizes the content of copper oxide in the slag formed while maintaining the slag sufficiently for fluid to promote easy transfer for recycling. If siliceous flux is used ratio of SiO 2  to CaO in the flux mixture should not exceed 2:1; the flux is preferably added at a rate of 19 to 75 wt per cent of the matte being charged; and the resulting slag should contain between 9 and 15% copper, mainly in the form of oxide.
Patent GB-1286477-A (GB)
Title: Method and apparatus for reducing the viscosity of non-newtonian liquids
IPC: B05D3/12
Filed: 1969-12-12
Abstract: 1286477 Mixing by ultrasonic vibrations; spray producers INTERNATIONAL BUSINESS MACHINES CORP 12 Dec 1969 [23 Dec 1968] 60651/69 Headings B1C and B2F [Also in Division C3] The viscosity of a non-Newtonian liquid is reduced by subjection to ultrasonic vibrations for a predetermined time. A known apparatus comprises a cylindrical chamber 16 with inlet 30 and outlet 31 and ultrasonic transducers 32, 33 at least at one end. In a novel apparatus, Fig. 3, the outlet takes the form of a longitudinal spray bar slit 43. In an installation (Fig. 1, not shown) the viscosity of a magnetic ink is reduced in a chamber (16), discharged by a spray bar (21) and thence transferred by a gravure roll (22) to a magnetic tape substrate (W). A pseudo-plastic thixotropic liquid comprising 10G fumed silica and 100G methanol having an apparent average viscosity of 5,000 cps was irradiated at 880 keps for thirty seconds, after which its viscosity was 400 cps, and its flow curve similar to that of a Newtonian liquid.
Patent GB-1276669-A (GB)
Title: A control circuit for a direct current supply
Inventor: TATHAM JAMES PROCTOR
IPC: B23K11/25
Filed: 1969-05-05
Abstract: 1276669 Control systems for resistive welding apparatus CONTINENTAL CAN CO Inc 5 May 1969 [3 May 1968] 60819/71 Divided out of 1276668 Heading H2H [Also in Division H3] A control system for rapidly reducing or interrupting the current flowing in a load comprises means for generating a voltage which is applied to the load in opposition to the supply voltage to the load and subsequently creating a short circuit across the load. Resistance welding electrodes 21 are supplied with direct current by way of a rectifier 15. When it is desired to terminate the welding current a signal is provided to the base of a transistor 41 by way of a line 33. Transistor 41 becomes conductive whereupon the voltage across a capacitor 49 is applied across the electrodes 21 in opposition to the voltage from the supply rectifier 15. After a predetermined time, to allow the current flowing across the electrodes 21 to fall to a low value a second transistor 43 is rendered conductive by means of a signal on a line 34. When the transistor 43 is conductive the electrodes 21 are virtually short circuited and little or no current flows across the electrodes. Diodes 57 and Zener diode 59 are provided for protection of the transistors 41, 43.