baber/WOPTO huggingface dataset:
Patent GB-1015877-A (GB)
Title: Production of carboxylic acid esters
IPC: C07C69/54
Filed: 1964-11-03
Abstract: Unsaturated aliphatic carboxylic acid esters are prepared from the aldehyde corresponding to the acid by reacting with an organic hydroperoxide in the presence of a non-tertiary alkanol (with up to 12 C atoms) and a redox agent.  The redox agent is a compound of an element having an atomic number of 22 to 28, 50, 58 and 82, namely cobalt, manganese, tin, cesium, nickel, lead, titanium, chromium and vanadium and preferably iron.  Many hydroperoxides are listed and t-butyl hydroperoxide is preferred.  Examples describe the preparation of methyl methacrylate from methacrolein and t.-butylhydroperoxide in the presence of methanol with an iron, cesium, cobalt, manganese, titanium, chromium or tin compound as redox agent.
Patent GB-1204903-A (GB)
Title: A thyristor control system for electromagnetic fuel injectors
IPC: F02D41/20
Filed: 1967-10-02
Abstract: 1,204,903. SCR operating circuits. SOC. DES PRECEDES MODERNES D'INJECTION SOPROMI. 2 Oct., 1967 [30 Sept., 1966], No. 44834/67. Heading H3T. [Also in Division G1] In a fuel injection control system for I.C. engines, injectors are opened by electromagnets which are initially energized at relatively high voltage to open them rapidly and are then maintained open at a lower voltage by means of a thyristor circuit including one thyristor (28 or 29, Fig. 2) controlling a group of injectors, and an individual control thyristor (27 or 26) in series with each injector coil. A further thyristor (33 or 32) controls the termination of an injection period. Operation.-In Fig. 2 terminals 21, 22, 23 are at potentials E, E/2 and zero volts, respectively. Thyristors 27, 29 are simultaneously triggered by a device not shown so that current at a voltage E/2 passes through Th 27, injector coil 25, diode 31, Th 29 to terminal 22 and the injector opens. To close the injector an extinguishing thyristor 33 is triggered by a timing circuit arrangement, Fig. 4. An oscillatory circuit thus formed between 21 and 23 via Th 27, L25, C35 and Th 33 produces extinction of Th 29. At the end of a quarter-cycle of oscillation C35 is charged and 27, 33 are in turn extinguished when the current tends to reverse, energy recovered from the coil 25 when 27 is extinguished, being stored as potential energy in C35 and the charge on C35 rises to substantially 2 E volts. For the next injection, at the injector operated by coil 24, thyristors 26, 28 are simultaneously triggered and the energy stored in C35 serves to open the injector very rapidly by way of Th 28, C35, L24, Th 26, 23. When the voltage across C35 has decreased to a zero value (forward voltage of diode 30) the coil 24 is maintained energized at a reduced power via 22, Th 28, diode 30, Th 26, 23. Thyristor 32 is then triggered to end the injection by extinction of Th 28, and capacitor 34 is thus charged to polarity indicated ready to assist the next injection by coil 25. Injection timing-circuit.-In Fig. 4, coils 70, 71 are D.C. energized, producing saturation of cores 66, 67. Coil 72 is in series with injector coil 25 of Fig. 2, and coil 73 is in series with injector coil 24. Output coils 74, 75 are connected to control electrodes of the extinction thyristors 32, 33, respectively. At the start of the injection period application of voltage to point 63 starts a timing circuit R64, C65. When C65 is charged to a sufficient potential unijunction transistor 62 is triggered and a current pulse passes through coils 68, 69. The core which in addition to its D.C. energization is energized both by this pulse and by current through an injector coil, becomes over-saturated and no pulse appears at its output coil whereas the output coil of the not over-saturated core produces a trigger pulse to its associated extinction thyristor (Fig. 2) to terminate the injection period.
Patent GB-1506099-A (GB)
Title: Separation of hydrocarbons from mixtures
IPC: C07C1/00
Filed: 1976-10-28
Abstract: 1506099 Extractive distillation INSTITUT FRANCAIS DU PETROLE 28 Oct 1976 [28 Oct 1975] 44887/76 Addition to 1441372 Heading C5E Benzene and/or toluene are separated from a hydrocarbon mixture which also contains at least one more saturated hydrocarbon by extractive distillation using a polar solvent to produce a bottoms, which is distilled to produce a benzene and/or toluene product and recycle solvent, and a distillate which is passed through silica gel to remove polar solvent therefrom; the solvent retained on the silica gel is eluted with at least a portion of the hydrocarbon mixture which is to be subjected to the extractive distillation. A feed 1 is extractively distilled at C1 using a solvent such as dimethylformamide or dimethylacetamide and the bottoms extract 7 is separated at C2 into an aromatic product 8 and recycle solvent 2. The overhead 3 is condensed at 17 and passed through one of the two silica gel beds R 1 and R2 whilst the other bed is being regenerated by displacing the solvent by passage of at least a portion of the feed mixture through it from line 12 or 13. The first portion of the distillate passed through the freshly regenerated bed contains aromatics and can be recycled to the extractive distillation.
Patent GB-1527938-A (GB)
Title: Voltage transformer assemblies
IPC: H01F38/24
Filed: 1976-10-29
Abstract: 1527938 Transformers SIEMENS AG 29 Oct 1976 [28 Nov 1975] 44993/76 Heading HIT The primary winding of a voltage transformer consists of a plurality of non-overlapping subwindings 14-19 connected in series, the subwinding 19 which is connected to the highest potential having the largest diameter. Protection against a voltage surge occurring on the input conductor 22 is provided by arranging a series of concentric cylindrical electrodes 23-30 around the conductor 22 forming capacitors, each electrode being connected to the outer layer of a subwinding, so that the voltage surge is distributed between the subwindings via the capacitors. The outer and/or inner layer of subwinding may be made from a single turn or wire mesh. Housing 21 may be of casting resin. A bushing containing the high voltage conductor 22 may be made separately (not shown) and be secured by the casting resin or may be formed by the casting resin itself. The core may be of iron. Flange 33 and gasket 38 provide a moisture proof seal. The transformer may be fitted to apparatus, not shown, by flange 40 of the apparatus, which may be fluid-filled.
Patent GB-1064690-A (GB)
Title: A balanced support mechanism for an overhung table of a machine tool, and particularly for a milling machine
IPC: F16M7/00
Filed: 1964-11-05
Abstract: 1,064,690. Balancing. P. CHIAIA. Nov. 5, 1964, No. 45085/64. Heading B3B. A milling machine tool &c. comprises a knee 2 balanced by a pivoted arm 8 which is resiliently loaded. The arm is connected to the knee by a slipper 5 in a guideway containing a gib 18, Fig. 3 (not shown), adjusted by a hand wheel 19 to lock the slipper.
Patent GB-1281722-A (GB)
Title: A method for producing tungsten hexachloride from a mixture of metal chlorides including tungsten pentachloride
IPC: C22B34/36
Filed: 1969-09-12
Abstract: 1281722 Tungsten hexachloride REDERI AB NORDSTJERNAN 12 Sept 1969 [12 Sept 1968] 45222/69 Heading C1A Tungsten hexachloride is produced from a mixture of metal chlorides including tungsten pentachloride by fractional distillation, wherein after the chlorides having boiling points lower than WCl 5  have been distilled off, chlorine is reacted with the remaining mixture to convert WCl 5  into WCl 6  which is separated. The tungsten chloride produced in this manner may be reduced to yield tungsten. Suitable starting materials for chlorination are hard metal scraps, scraps from tungsten alloys and ferro-tungsten.
Patent GB-1028336-A (GB)
Title: Improvements in or relating to apparatus for shaping and lasting the heel end of shoes
IPC: A43D21/12
Filed: 1962-11-30
Abstract: 1,028,336. Shaping uppers. COWELL MOLDING CORPORATION. Nov. 30, 1962 [Jan 18, 1962], No. 45358/62. Heading A3B. In an apparatus for shaping the rear portion of a shoe upper in which the upper is pressed against a form 20 having a substantially flat top face, and the margins of the upper wiped over an insole on the form, the arrangement is such that when the wipers 60 are in a rearward inoperative position the insole and upper may be positioned in the form from above and in front of the form. The insole is positioned and held by means of pins 106 which project from the heel seat portion of the inner form 20 and engage in holes centred on the longitudinal median line of the insole. Form 26 comprises a centre part 28 connected by links 32 to side parts 30, and is moved longitudinally of the shoe by means of piston and cylinder 40, 42. The upper assembly so advanced by means of piston and cylinder 88, 90, and withdrawn by means of finger 94 when the outer form 26 is retracted. Springs 66 apply a resilient yielding pressure to the wipers, but additional pressure, to cause the margins of the upper to adhere to the insole, is applied by means of a piston and cylinder 80, 84 acting via bar 70, screws 68, and plate 56 on which the wipers are mounted, the pressure being adjusted by adjustment of the screws in the bar. In operation the work is mounted on form 20, and the upper is drawn about the heel end of the form, pulled forward, and adjusted to bring the tip of the toe into coincidence with the tip of the insole. Thereafter, under valve control, form 26 is advanced, the wipers are advanced, depressed, and then raised, form 26 is retracted, retracting the wipers, and the wipers are lowered into engagement with the top of the former 26. In an alternative arrangement, instead of moving the wipers heightwise, the inner form 20 is moved, in which case the outer form 26 is retracted before the inner form is lowered. Form 20 may be heated by an element 110, and heat may be employed to activate a stiffener and/or to assist in setting the adhesive. The lasting margin may be precoated with adhesive or the adhesive applied just before wiping, and preferably the margin is slashed or notched at about the heel breast line in order that the heel portion may be better bedded. Toe and heel stiffeners may be provided and may be co-extensive with the upper or terminate at the edge of the insole.
Patent GB-1224066-A (GB)
Title: N-aryl-n'-substituted amino phthalamides and their use as herbicides
IPC: A01N37/30
Filed: 1968-09-24
Abstract: 1,224,066. N - aryl - N<SP>1</SP> - substituted aminophthalamides. UNIROYAL Inc. 24 Sept., 1968 [20 Oct., 1967], No. 45401/68. Heading C2C. [Also in Division A5] The invention relates to N-aryl-N<SP>1</SP>-substituted aminophthalamides of the general formula wherein Ar represents a substituted or unsubstituted aryl group and R<SP>1</SP> and/or R<SP>2</SP> represent hydrogen atoms or substituted or unsubstituted alkyl or aryl groups or R<SP>1</SP> and R<SP>2</SP> taken together with the adjacent nitrogen atom form a heterocyclic ring. Compounds claimed per se are N - (1 - naphthyl) - N<SP>1</SP> - (amino) - phthalamide, N - (2,3 - dichlorophenyl) - N<SP>1</SP> - (dimethylamino) - phthalamide, N - (1 - naphthyl) - N<SP>1</SP> - (dimethylamino) - phthalamide, N - (1 - naphthyl) - N<SP>1</SP> - (anilino) - phthalamide, N- (1 - naphthyl) - N<SP>1</SP> - (piperidino) - phthalamide, N - (1 - naphthyl) - N<SP>1</SP> - (morpholino) - phthalamide, N - (2,3 - dichlorophenyl) - N<SP>1</SP> - (amino)- phthalamide. The compounds may be prepared by reacting an N-aryl phthalimide of the general formula with a hydrazine of the formula H<SP>2</SP> 2 NNR<SP>1</SP>R<SP>2</SP>. In an example, N-(1-naphthyl)-phthalimide is reacted with hydrazine to produce N-(1- naphthyl)-N<SP>1</SP>-(amino)-phthalamide.
Patent GB-1111641-A (GB)
Title: Cathode ray tube deflection amplifier circuit arrangements
Inventor: THORNE-BOOTH GEORGE MERVILLE
IPC: H03K4/72
Filed: 1963-11-18
Abstract: 1,111,641. Transistor circuits. ELLIOTT BROS. (LONDON) Ltd. 18 Feb., 1965 [18 Nov., 1963], No. 45414/63. Heading H3T. An amplifier, for feeding the two-terminal deflection coil 29 of a cathode-ray tube, comprises a long-tailed pair of transistors 3, 4 coupled to a push-pull transistor output stage 25, 31, with negative, feedback taken to the long-tailed pair. The output from transistor 3 is preferably coupled via transistors 8, 14 to the bases of parallel pairs of complementary transistors 25, 26, 31, 32. Level-shifting and temperature compensating Zener and other diodes 19 . . . 24 are provided to bias the output transistors to Class B. Capacitor 12 reduces the loop gain to less than unity for signals having a phase shift approaching 180 degrees. Transistors 3, 4 are balanced by earthing terminal 1, then adjusting resistor 6 until the current in resistor 35 falls to zero.
Patent GB-1241182-A (GB)
Title: Clamping chuck
IPC: B23B31/12
Filed: 1968-09-25
Abstract: 1,241,182. Chucks. CRI-DAN. 25 Sept., 1968 [2 Oct., 1967], No. 45576/68. Heading B3B. A clamping chuck for machine tools, e.g. a lathe, comprises a body supporting a set of clamping jaws 2 operated by a mechanism compensating for eccentricity of a workpiece 7 to be machined, the mechanism including an annular member 15 and a sleeve 16 coaxial with the chuck, the annular member 15 being movable radially relative to the sleeve, there being a locking element 17, 18 between the annular member and sleeve capable of locking the annular member in a required position. The chuck also includes a set of centring jaws 3 operated by a second mechanism independent of the first one which effects equal displacement of said centring jaws in relation to the axis of rotation of the chuck, and the centring jaws are each moved along an inclined path towards the workpiece so that they contact the surface to be machined at a distance in front of the chuck body to centre the workpiece in the machining zone. 'The centring jaws 3 are retracted after the clamping jaws 2 are actuated. The centring jaws 3 include workpiece engaging dogs 28 and are moved through inclined bores 27 by an actuating mechanism including an electric or hydraulic motor driven gear ring 37 driving axially fixed nuts 33 that axially move screws 32 to move an annular ring 31. The centring .jaws 3 are connected by a dovetail and slot arrangement to an annular ring 29 which is acted upon by the annular ring 31. The clamping jaws 2, include workpiece engaging dogs 24 and members 25 individually adjusted by screws 26. The clamping jaws are operated'by a pivoted lever 8 actuated by a cam surface 14 on the annular member 15 that is moved axially -via locking element 17, 18, sleeve 16, and thrust bearing 23, by a member 22 that is moved by a hydraulic or pneumatic piston. The locking element comprises interengaging discs that allow radial movement of the annular member 15 before they frictionally grip each other. The chuck is attached to e.g. a lathe spindle 5, by screws 4.
Patent GB-1177948-A (GB)
Title: Improvements in and relating to Infra-Red Analysers
Inventor: HASWELL RONALD
IPC: G01N21/37
Filed: 1966-10-12
Abstract: 1,177,948. Photo-electric infrared analyzers. HOWARD GRUBB PARSONS & CO. Ltd. Oct. 19, 1967 [Oct.12, 1966], No.45624/66. Heading G1A. In an infrared analyzer chopped sample and reference beams are directed sequentially to a variable capacity diaphragm type radiation detector, the resultant pressure changes upon the diaphragm generating an A. C. signal whose phase is indicative of the absorption by a sample in the sample beam. In the embodiment the axis of chopper 11 is displaced from the centre line xx of the detector, comprising receiving chambers 5a and 5b and a diaphragm enclosure 6, so that radiation beams directed towards the two chambers are cut-off at different times. To compare the phase of the detector A. C. signal with a reference signal, which may be generated photo-electrically or by other means, the A. C. signal is squared and differentiated and used to define the leading edge of a squarewave signal whilst the trailing edge is defined by the squared and differentiated reference signal. The mark space ratio of the squarewave is thereby indicative of the phase of the detector signal. Alternatively the detector and reference signals can be locked to the chopping frequency and synchronously integrated and demodulated to obtain the phase angle.
Patent GB-947370-A (GB)
Title: Improvements in or relating to molds and related processes and apparatus
IPC: B28B1/26
Filed: 1961-12-21
Abstract: 947,370. Drying with porous moulds. AMERICAN RADIATOR & STANDARD SANITARY CORPORATION. Dec. 21, 1961 [Dec. 27, 1960; April 29, 1961; May 19, 1961; July 18, 1961], No. 45872/61. Heading B5A. A fluid containing substance e.g. barbotine, ceramic paste &c. is moulded to the shape of wash basins, tanks, tank lids &c. by drying within a porous mould e.g. of plaster, assisted by the heating effect of an electric current passed therethrough. Mould cavity 14 is supplied with fluid paste 50 through passages 18 passing to discharge passage 20. Metallic gauze electrodes 32a, 32b and 34a, 34b are located within the mould halves 10 and 12, across each end, and are supplied from an electrical source 40. As water is absorbed from the paste into the porous walls of the mould the increased conductivity results in the passage of electric current the heating effect of which accelerates moisture transmission and drying. The mould cavity may be coated with enamel prior to filling with paste.
Patent GB-985346-A (GB)
Title: Temperature regulating device for paper making machines
IPC: D21F5/02
Filed: 1962-12-07
Abstract: 985,346. Paper-making. SIEMENS & HALSKE A.G. Dec. 7,1962 [Dec. 22,1961], No. 46198/62. Heading D2A. [Also in Division G3] Paper-making machinery in which the paper is passed over a number of drying cylinders is provided with means whereby the temperatures of the cylinders are kept constant at values which are individually and collectively controllable. The drying cylinders 1-11 are heated by saturated steam supplied from a pipe 12 by way of throttle valves M1-M11. The steam pressures in the cylinders 1-11; and hence the temperatures thereof; are measured by devices P1-P11 for supply to regulators DR1-DR11. The input to the regulators is obtained from a pressure source 13 by way of controllers Re1-Re11, each controller and the source being provided with an adjusting device S. The desired temperature value of each of the cylinders is selectable by means of adjusting devices S1-S11 associated with the regulators DR1-DR11 and the output of the regulators is used to control the valves M1-M11to maintain the steam pressure in the cylinders-and hence the temperatures thereof-constant at the selected values. The adjusting device S associated with the pressure source 13 permit collective adjustment of the temperatures of the cylinders. A sensing device Z, sensitive to the final temperature or humidity of the paper, may be provided which is effective to modify the pressure source 13 and hence the temperatures of the cylinders. In another embodiment the controlling devices are electric, comprising a number of bridge network each including temperature sensitive resistors for sensing the temperatures of the cylinders and variable resistors for selecting the desired values thereof, the bridge networks being used to control electric regulators which in turn control the valves admitting steam to the cylinders.
Patent GB-990435-A (GB)
Title: Speech synthesis system
IPC: G10L13/04
Filed: 1962-12-10
Abstract: 990,435. Electronic counters. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 10, 1962 [Dec. 21, 1961], No. 46519/62. Heading G4A. [Also in Divisions H3 and H4] A ring counter comprises stages each consisting of a PNP and an NPN transistor so arranged in a regenerative circuit that they are either conducting or non-conducting together. Operation of the reset key removes earth from transistors 503. . .505 so that all these stages become non conducting, and at the same time applies earth to the base of 502 to turn it on whereupon 501 is turned on due to a negative pulse applied over the condenser to its base. Positive pulses subsequently to the drive lead 509 cuts off 501 and 502 follows to pulse the subsequent stage which thus turns on; and so on. The ring counter is used in a speech synthesizer (see Divisions H3 and H4).
Patent GB-1369043-A (GB)
Title: Continuous casting of metals
IPC: B22D11/11
Filed: 1971-10-06
Abstract: 1369043 Continuous casting MITSUBISHI JUKOGYO KK 6 Oct 1971 [12 Nov 1970] 46561/71 Heading B3F  Molten metal is poured, e.g. by way of a tundish outlet 6a and protected by a tube 7, through a bath 8 of molten slag heated by non-consumable electrodes 3 in the upper part of a mould 1 in which a casting 12 is formed to be withdrawn downwards. As shown, the casting 12 is hollow because there is a mandrel 2 in the mould. The mould may be shaped to produce channel- or I- sections and there may be several nozzles 6a feeding it, or the tundish 6 may be rotated or oscillated back and forth about its axis. Current from the electrodes 3, each in an air- or watercooled holder 4, maintains the slag bath 8 of 30-80 mm. depth at 1500-2000 C. To lubricate and protect the casting 12 and retard its cooling, films 10 of slag 0À2-2À0 mm. thick form on the solidifying metal 11 in the mould 1. Jets of water from bodies 13 provide secondary cooling and the slag films 10 are removed in this region. Alternatively, cooling air or water may be injected into the gaps between the slagcovered casting and the mould and mandrel. Part at least of the mould surface may be provided by a graphite liner (15).
Patent GB-1276127-A (GB)
Title: Flux capstan
Inventor: WHY JOHN FREDERICK
IPC: H05H1/10
Filed: 1969-09-22
Abstract: 1276127 Superconductive magnetic devices J F WHY 22 Dec 1970 [22 Sept 1969] 46634/69 Heading H1P [Also in Division G6] A device for shaping a magnetic field comprises a superconductor loop arranged for rotation about an axis in the plane of the loop, means for open-circuiting the loop to allow an externally generated magnetic field to penetrate the loop, and means for closing the loop to imprison the magnetic flux. As shown, Fig. 1, a superconductor loop is arranged for movement on a gimble mounting and is supported by bearings 8, 9 which include slip-rings and coolant connections. The loop is provided with junction-boxes 6, 7 containing superconductor switches which can open-circuit the loop when desired. The switches may be of the thermal or electromechanical type. The loop itself comprises a double pancake winding of superconductor material (17) interleaved with a porous web (18). The winding is sandwiched between two formers (15, 16) which co-operate with side covers (21) to enclose the winding and provide three coolant channels. The whole assembly is covered with thermal insulation (14), Fig. 2 (not shown). In operation the loop is first open-circuited, a magnetic field is threaded through the loop, the loop is closed and then angularly displaced to distort the magnetic field. The device may be provided with superconductor discs at the points of the loop about which it is rotated to prevent bunching of the magnetic field. Alternatively the loop may be rectangular with extensions at the ends. The device may be used for creating curved magnetic fields e.g. in plasma containing devices and particle accelerators, and may be continuously rotated to produce a plasma retaining field.