baber/WOPTO huggingface dataset:
Patent GB-1176010-A (GB)
Title: Directional Control Circuit for Circuit Breakers.
IPC: H02H3/38
Filed: 1967-09-27
Abstract: 1,176,010. Protective arrangements. McGRAW - EDISON CO. 27 Sept., 1967 [10 March, 1967], No. 43920/67. Heading H2K. A protective arrangement includes a directional relay formed by a circuit 32 which produces a first output signal when an excess current condition occurs, a circuit 36 which produces a second output signal when either a voltage or current quantity of a protected circuit has a predetermined polarity, a circuit 34 which produces a third output signal functionally related to the phase of the other current or voltage quantity and a common circuit 38 which receives the signals and provides a tripping signal for initiating a time delayed tripping of circuit breaker upon coincidence of the three output signals. The circuit 32 includes an input transistor connected to a rectifier D7 and current transformer T4. When an excess current occurs, the input transistor Q6 conducts sufficiently to provide a potential at the base of a level detecting transistor Q7 exceeding the fixed bias potential provided by a Zener diode D8. The transistor Q7 conducts and renders a transistor Q8 conducting to provide an output at 43. The second circuit 36 is energized from a voltage transformer T5 and includes a switching transistor Q16 and a diode D14 which provide an output at 48 in the form of squared half waves. The circuit 34 is a peaking circuit connected to the current transformer T4 and producing impulses related to alternate changes in sense of the current. In this circuit a transistor Q10 becomes non-conductive when its base potential goes negative and permits a capacitor C4 to charge. This provides a base current to a transistor Q11 which turns on to turn off a transistor Q12. When the capacitor C4 and a further capacitor C6 are fully charged transistor Q11 turns off and transistor Q12 turns on to turn on a transistor Q 14 which conducts for a short time until a capacitor C7 is charged. This provides a short output at 46. When the continuous output signal at 43, the square wave at 48 and the short pulses at 46 exist simultaneously, the AND circuit 38 provides a signal to an output circuit 40 having amplifying transistors Q17, Q18 and an integrating capacitor C8 which when sufficiently charged causes a transistor Q19 to conduct to provide an output signal. Fig.. 1 (not shown), illustrates a polyphase arrangement having such an arrangement for each phase and a similar earth fault directional arrangement. The outputs from the respective AND circuits are applied to a common output circuit 40 which switches on a transistor Q1 controlling the operation of a current-responsive timing circuit 20 which effects the tripping of the circuit-breaker.
Patent GB-1454324-A (GB)
Title: Recovering combustible gases from underground deposits of  coal or bituminous shale
IPC: E21B43/243
Filed: 1974-10-11
Abstract: 1454324 Combustible gases INSTITUT NATIONAL DES INDUSTRIES EXTRACTIVES 11 Oct 1974 [14 Aug 1974] 44065/74 Heading C5E Combustible gases are recovered from an underground deposit of coal or bituminous shale with overlying rock by thermally gasifying the coal or shale in a lower part N 1 , Fig. 1, of the deposit and recovering the combustible gases thus produced, through gasification bore S 1 , whereby the overlying rock is heated, expanded and fissured, and separately recovering, through recovery bore S 2 , the combustible constituents described and released from the rock. Gasification is carried out by repeatedly injecting air or reactive gas (hydrogen) under pressure through bore S 1  into gasification chamber C and subsequently withdrawing combustible gas therefrom. For better use of the pumping equipment two sets of gasification bores may be provided whose gasification cycles are operated out of phase. When the rocks have reached a sufficiently high temperature, a cycle in which water or steam is injected may be interposed between two cycles of gasification with air &c. so the gasification chamber C increases in size (V 1 , V 2 , V 3 ) layers of rock which form its roof disintegrate and collapse. The bottom of recovery bore S 2  is maintained at or below atmospheric pressure. Supplementary bores S 3  may be drilled to intermediate levels.
Patent GB-1400986-A (GB)
Title: Fabrication of curved fittings from tubular blanks
IPC: B21C37/29
Filed: 1973-09-20
Abstract: 1400986 Making elbows and T-branches; flanging; forging; drawing TSENTRALNY NAUCHNO - ISSLEDOVATELSKY INSTITUT TEKHNOLOGII MASHINOSTROENIA 20 Sept 1973 44249/73 Headings B3A B3E B3H B3P and B3Q A method of fabricating a curved fitting from a tubular blank 11 of circular cross-section comprises compressing the blank from opposite sides to produce an oval cross-section and then bowing the blank between two dies 1, 2 having complementary longitudinally arcuate recesses 3, 4 and which act in the direction of the major axis of the oval section. A pair of dies 5, Fig. 1, are situated between dies 1, 2 and have flat working surfaces 6. Die 3 is mounted on a platen 7 and has guides 8 for the dies 5 which are held apart by spring fitted over rods 13, Fig. 2. An upper crosspiece 9 has two depending plates 17 having inclined faces 18 which interact with inclined faces 19 upon downward movement of the crosspiece 10 of the press. This causes lateral movement of the dies 5 which in turn produces an oval cross-section 11a, Fig. 5. As the crosspiece 10 descends further, the blank 11a is pushed into die recess 3 by the die 2 until the recesses 3, 4 define together a circular cross-section and form a curved fitting 11c, Fig. 8. In an alternative embodiment, Figs. 10-16 (not shown), the lower die (16) has an opening (28) in its recess (3a) for accommodating an additional die (32) used for forming a branch (34a) in the curved fitting. In a further embodiment, Figs. 17-22 (not shown), the dies which have complementary arcuate recesses may be fitted on to upper and lower lateral dies (5a) which are formed with dovetails for such a purpose. In this embodiment the dies (5a) have to be withdrawn after forming the oval cross-section so that the dies (1b), (2a) can be mounted on them.
Patent GB-1066569-A (GB)
Title: Improvements in or relating to relaxation oscillators
IPC: H03M1/00
Filed: 1965-10-22
Abstract: 1,066,569. Relaxation oscillator circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 22, 1965 [Nov. 6, 1964], No.44750/65. Heading H3T. [Also in Division G4] An oscillator of the type in which a capacitor is charged and discharged to produce each oscillation cycle has a further capacitor connected through a diode to the first to lengthen the first cycle or cycles. The oscillator may be used to supply a synchronous stepping motor, the slower initial cycle or cycles allowing the motor to run up to speed or it may be used to convert a time duration into a digital signal in a non-linear fashion. In normal operation a capacitor 8 charges through resistors 6 and 7 and discharges through cross-coupled PNP, NPN transistors 1, 2 when the voltage exceeds a value determined by potential divider 4, 5. During the first cycle a capacitor 29 is effectively in parallel with capacitor 8 so that the charging time is longer but as diode 11 prevents capacitor 29 being discharged it does not effect the second cycle. A further capacitor 26 is also initially in parallel with capacitor 8 and this progressively charges during the first few cycles, the discharge being prevented by diode 28, so  that the capacitor progressively allows the frequency to increase. Operation is interrupted by opening a switch 16 so that the capacitors are discharged directly or via transistor 18 and diodes 11 and 26.
Patent GB-1491778-A (GB)
Title: Liquid droplet recording apparatus
IPC: G06K15/10
Filed: 1975-10-31
Abstract: 1491778 Synchronizing liquid droplet recording apparatus INTERNATIONAL BUSINESS MACHINES CORP 31 Oct 1975 [16 Dec 1974] 45264/75 Heading G4H Droplet formation and droplet charging in a liquid droplet recording apparatus are synchronized during a non-recording phase by periodically applying charging signals to electrode means for imparting charges to individual droplets at a frequency which is a sub-harmonic of the drop formation frequency, each signal being of a duration less than that of each charging signal applied to the electrode means during recording. The charge carried by the droplets is detected and compared with a reference value to produce a control signal which is used to adjust the relative time relationship between the times of drop formation and charging. As described (Figs. 1-8, not shown), synchronization of an ink-jet printer (forming 40 x 24 character matrices) is tested automatically between lines or pages, or manually by the operator. During the test phase, the deflection circuits are rendered inoperative and charging pulses of one quarter the width and frequency of the recording pulses are used. The resulting charge on the stream is inductively sensed, filtered and integrated, then compared with a reference voltage to produce a signal which changes the phase of a piezoelectric crystal driver used for drop formation. The sync-testing circuitry may be modified for use with a multi-jet printer.
Patent GB-1102899-A (GB)
Title: Apparatus and process for reconditioning metal treating solutions electrolytically
IPC: C25D21/16
Filed: 1965-10-27
Abstract: A spent chromic acid treating solution, containing trivalent chromium ions and foreign metal ions such as of Cu, Zn, Fe, Ni and Cd, is reconditioned by supplying the solution as anolyte to an electrodialysis cell 10 having anode and cathode compartments e.g. B1, B2 and A1, A2, A3, A4, each containing respectively an anode 38, e.g. of lead or lead alloy (Pb-Sb, Pb-Sn or Pb-Ag), or a cathode 35, e.g. of steel, nickel or nickel alloy and separated by a cation permeable membrane 17, and applying a voltage to move the foreign metal ions from the anolyte through the membrane into the catholyte, e.g. HCl solution, while maintaining the membrane permselective to restrict passage of Cr ions and reoxidizing the trivalent chromium in the anolyte into hexavalent chromium.  As shown, the catholyte may be circulated through the cell, removed therefrom via outflow trough C and pipe line 45 to tank E, pumped through filter 56 e.g. to extract precipitated Cu, and returned to the cell via manifold <PICT:1102899/C6-C7/1> 52. The reconditioned anolyte may be returned from the cell via outflow trough D and pipe line 64 to an actual treating tank F, e.g. for chromium plating, bright pickling copper or copper alloys, stripping copper coatings from steel or alumina from aluminium anodizing Zn, Al, Mg, or chromating Zn, Cd, Al, Mn, which is connected back to the cell via manifold 63, to maintain the treating solution in a fully usable condition during the treating operation.
Patent GB-1448325-A (GB)
Title: Process for the reduction of nitrogen oxides
IPC: B01D53/86
Filed: 1974-10-21
Abstract: 1448325 Exhaust gas catalyst KURASHIKI BOSEKI KK 21 Oct 1974 [21 Nov 1973] 45412/74 Heading B1E [Also in Division C1] A metallic sulphate catalyst comprises copper sulphate, manganese sulphate, nickel sulphate, iron sulphate, cobalt sulphate, zinc sulphate or aluminium sulphate preferably used in an amount of from 0.05 to 20 weight % based on the weight of the catalyst and if present of the carrier. The catalyst may be used alone or in mixtures and may be used in combination with a carrier e.g. Al 2 O 3 , MgO or SiO 2 . Examples of mixed sulphate catalysts are given i) copper and manganese sulphates (ii) copper and cobalt sulphates (iii) copper and zinc sulphates (iv) aluminium and ferrous sulphates (v) copper, manganese and nickel sulphates. In examples calcined alumina is impregnated with a solution of a sulphate, dried for 20 hours at 110‹C then calcined at 450‹C for 3 hours in a stream of air. The process may be used for purifying stock gases typically containing nitrogen oxides, sulphur dioxide, carbon dioxide, nitrogen, oxygen and water.
Patent GB-1387931-A (GB)
Title: Wallpaper pasting apparatus
IPC: B44C7/04
Filed: 1972-10-03
Abstract: 1387931 Apparatus for pasting paper N HIGGINSON 1 Oct 1973 [3 Oct 1972] 45445/72 Heading D1L A pasting apparatus for wall paper, consists of a frame which carries a paste container, a cylindrical roller rotatable in the container and capable of dipping in the paste, tension rollers through which the paper to be passed, passes a drawing roller over which the paper passes after pasting and means for controlling the thickness of the paste layer by use of an eccentrically mounted rod or spindle extending parallel to the rollers associated with means to increase or decrease the clearance between the rod or spindle and the cylindrical roller. The clearance of the spindle or rod may be adjusted by a handle attached thereto provided with a spring pin which engages in one of a plurality of holes in the frame. As shown diagramatically in the figure the paper passes over roller 4, between tension rolls 5 and 6, over coating roller 3 fed by paste from container 2, between rolls 7 and 8 and over roll 12 from where it is folded. Roller 7 carries a sleeve of rubber or plastics material to grip the uncoated side of the paper. The amount of paste taken up by roller 3 is controlled by eccentrically mounted roll or spindle 13.
Patent GB-1128204-A (GB)
Title: Improvements in or relating to motion transmitting devices
Inventor: SCHAEFER HANS FREDERICK
IPC: F16H49/00
Filed: 1964-11-07
Abstract: 1,128,204. Toothed gearing. UNITED SHOE MACHINERY CORP.. 5 Nov., 1965 [7 Nov., 1964], No. 45463/64. Heading F2Q. A two- or more-lobed input cam 10 rolls the teeth 26 of a stationary (or rotary) flexible gear 14 into mesh with an outer ring gear 32 comprising individual axially spaced ring gears 30 connected by radial slots to axially extending flexible cantilevers 36 on an output shaft 34 (or to a stationary member), which cantilevers allow torsional deflection of the flexible gear teeth 26. One face of each ring gear 30 is recessed at 66 to carry lubricant from mating axial bores 64 supplied from the centre of the cam 10. The flexible gear 14 may be the output member with the outer ring gear 32 stationary.
Patent GB-1532794-A (GB)
Title: Oil ring assemblage
IPC: F16J9/14
Filed: 1975-10-31
Abstract: 1532794 Piston rings KOPPERS CO Inc 31 Oct 1975 [19 Nov 1974] 45471/75 Heading F2T An oil control piston ring 90 is radially expanded by a split serpentine spring 100 in an inner circumferential groove 92 of the ring and a bridging piece 110 is held in the groove 92 by the spring 100 and spans the gap 48 of the ring. The ring has two rails 42, which may be chromium plated.
Patent GB-1477693-A (GB)
Title: Methods of and apparatus for severing bar or tube stock
IPC: B23D23/04
Filed: 1974-10-21
Abstract: 1477693 Shearing AUTOMOTIVE PRODUCTS Ltd 15 Oct 1975 [21 Oct 1974] 45489/74 Heading B3W Bar or tube stock 11 to be severed at a plane 14 is gripped by hydraulic chucks 16, 18 including split collets 17 and 22 close to the plane 14, a spike 25 on the collet 17 indenting the stock to define the plane of severance. End plates 23, 24 prevent axial movement of the chucks while a hydraulic ram 21 rotates the holder 19 of the chuck 18 to sever the stock at the plane 14. Alternatively, the stock is scored at plane 14 before being put in the chucks or a scoring tool is inserted between the chucks.
Patent GB-458055-A (GB)
Abstract: 458,055. Rontgen - ray apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Dec. 31, 1935, No. 36097. Convention date, Dec. 31, 1934. [Class 98 (i)] The speed of a Bucky diaphragm which is reciprocated in its movement during radiography, becomes greater than the normal speed over a limited distance before the point of reversal and over a similar limited distance after the point of reversal at the end of each cycle. The Bucky diaphragm 26 is supported on the platform 12 by standards 30, 31, 32, 33, which have bearings engaging flanges 34, 35. on the diaphragm. Studs 36, 37, on the diaphragm 26 are connected by coil springs 38, 39 to pins 40, 41 on the platform 12. An electric motor 14 drives, through worm and toothed wheel gearing a cam 50 which has a peripheral track divided into straight or curved sections and humps, and engages a pin 55 on the Bucky diaphragm. The pin 55 is mounted on a sliding bar 15 which is connected at its ends to bell-crank levers 20, 21. These levers are pivotally connected to links 22, 24 pivoted on brackets 23, 25 attached to the diaphragm. When the motor 14 rotates, the cam wheel 50 is rotated through the gearing and the pin 55 follows the track producing an accentuated motion at the ends of the travel, e.g. over one-sixth or one-seventh of the total travel of the diaphragm. The movement is arranged to be out of synchronism with the energization of the X-ray tube.
Patent GB-997169-A (GB)
Title: Purification of gaseous mixtures containing hydrogen sulphide
IPC: B01D53/52
Filed: 1961-12-21
Abstract: Hydrocarbons having 1 to 3 carbon atoms, e.g. natural gas, and gases from processes involving catalytic reforming and partial combustion of hydrocarbons, optionally containing hydrogen, contaminated with hydrogen sulphide, and possibly also with carbon dioxide and/or carbon oxysulphide and/or water, are purified by contact with a sulphone of formula <FORM:0997169/C4-C5/1> wherein at least 4 of the RS are hydrogen and any remaining RS are alkyl groups having 1 to 4 carbon atoms.  The sulphone may be used in combination with hydrocarbons having 8 to 2 carbon atoms, and countercurrent contact may be effected in a tower fitted with suitable contact aids. Elevated temperatures and pressures may be used.  The solvent may then be stripped at reduced pressure before being recycled, advantageously in the presence of the above-mentioned hydrocarbons having 8 to 12 carbon atoms, which are recovered by cooling the stripped gas.  Hydrocarbons having 4 to 7 carbon atoms are recovered from the stripped gas by countercurrent scrubbing with a sponge oil predominantly composed of hydrocarbons having 8 to 12 carbon atoms, followed by stripping.ALSO:A process for purifying gases contaminated with hydrogen sulphide, and possibly also with carbon dioxide and/or carbon oxysulphide and/or water comprises contacting the gas with a sulphone of formula <FORM:0997169/B1-B2/1> wherein at least four of the R's are hydrogen, and any remaining are alkyl groups having 1-4 carbon atoms.  Gases specified are hydrocarbons having 1-3 carbon atoms, which may contain hydrogen.  The sulphone may be used in combination with hydrocarbons having 8-12 carbon atoms, and intimate countercurrent contact may be effected in a tower fitted with suitable contact aids.  Elevated temperatures and pressures may be used.  The solvent may then be stripped at reduced pressure before being recycled, advantageously in the presence of the abovementioned hydrocarbons having 8-12 carbon atoms, which are recovered by cooling the stripped gas.  Hydrocarbons having 4-7 carbon atoms are recovered from the stripped gas by countercurrent scrubbing with a sponge oil predominantly composed of hydrocarbons having 8-12 carbon atoms, followed by stripping.
Patent GB-1443468-A (GB)
Title: Method of external light emitting efficiency of a light emitting device
IPC: G02B6/122
Filed: 1973-10-03
Abstract: 1443468 Electroluminescence UNIVERSITY OF TOKYO 3 Oct 1973 [12 Oct 1972] 46257/73 Heading C4S [Also in Division H1] The light emitting efficiency of a light emitting PN junction diode is improved by providing an oxide film on the light emitting surface by plasma oxidation. As described the device is of gallium phosphide or gallium arseno-phosphide and the oxide 1000  to 1 Á thick and covered with a dome of epoxy resin. The refractive index of the oxide, which may be thinned by etching in dilute HF, is substantially equal to that of the semi-conductor at the interface therewith and gradually diminishes towards the surface thereby reducing internal reflection.
Patent GB-1046369-A (GB)
Title: Waste incinerator
IPC: F23G5/00
Filed: 1964-11-13
Abstract: 1,046,369. Incinerators. WESTINGHOUSE ELECTRIC CORPORATION. Nov. 13, 1964 [Dec. 9, 1963], No. 46354/64. Heading F4W. A waste incinerator comprises a bin 3 which holds the waste, in the form of a plug 7, compressed by an inflatable bag 8 into contact with a mesh of electric heating elements 4, 5, 6. Air is supplied through a port 12 and the combustion gases extracted by a fan 16 after mixing with cold air from port 15. The ash left by the burnt waste is flushed through a drain 23 by water from a supply 21.
Patent GB-1409353-A (GB)
Title: Strengthened films of polyethylene-1,2- diphenoxyethane-4,4-dicarboxylate and method for producing same
IPC: B29C49/00
Filed: 1973-10-04
Abstract: 1409353 Polyethylene-1,2-diphenoxy ethane- 4,4<SP>1</SP>-dicarboxylate films ASAHI KASEI KOGYO KK 4 Oct 1973 [9 Oct 1972] 46432/73 Heading B5B Biaxially stretched films of polyethylene-1,2- diphenoxy ethane-4,41-dicarboxylate having a stress value at 5% longitudinal elongation of 20-50 kg./mm.<SP>2</SP>, a longitudinal tensile strength of 30-65 kg./mm.<SP>2</SP>, a longitudinal initial modulus of elasticity of 800 kg./mm.<SP>2</SP> to 1500 kg./mm.<SP>2</SP>, a transverse tensile strength of 8-20 kg./mm.<SP>2</SP> and an unevenness of 5% or less are made by firstly stretching the film at least in the transverse direction to give a film density of 1À335 or less, and secondly stretching in the longitudinal direction at a temperature of 100- 200‹ C. to a total stretch ratio in this direction of 5-8 times.
Patent GB-1439067-A (GB)
Title: Dithiophosphate esters having pesticidal properties
IPC: A01N57/16
Filed: 1973-10-05
Abstract: 1439067 Dithiophosphate esters CIBAGEIGY AG 5 Oct 1973 [6 Oct 1972 2 Aug 1973] 46665/73 Heading C2P The invention comprises compounds of the formula wherein R 1  is H, halogen, or N0 2 , R 2  is C 1 -C 5  alkyl, C 3 -C 5  alkenyl or -alkynyl, C 1 -C 5  alkoxy C 1 -C 5  alkyl or C 1 -C 5  alkylthio- C 1 -C 5  alkyl and X is O or S. They may be obtained by reacting a compound either with a compound HSP(O)(0R 2 )(SR 3 ) in the presence of an acid binding agent or with a compound MeSP(O)(0R 2 )(SR 3 ) where Me is a monovalent metal, if necessary in the presence of an acid binding agent. The products have pesticidal properties and may be used as active ingredients in conventional pesticidal compositions which may also contain other pesticides, e.g. ureas, formamidines, carbamates, derivatives of nitrophenols, chlorinated hydrocarbons and other organic phosphorus compounds.