baber/WOPTO huggingface dataset:
Patent GB-800281-A (GB)
Title: Improvements relating to polyphase voltage regulators
Inventor: SCOLES GRAHAM JOHN
IPC: H01F29/06
Filed: 1956-02-23
Abstract: 800,281. Regulating transformers. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Feb. 13, 1957 [Feb. 23, 1956], No. 5649/56. Class 38 (4). A polyphase voltage regulator arranged for a three-phase four-wire supply comprises inductive windings L1-L3 each connected between the lines 1-3 and neutral wire N. Loads R1- R3 are connected to brushes 4-9 which traverse the windings. The brushes are preferably arranged in two sets 4-6-8 and 5-7-9, the sets being ganged and interlocked so that one set must be on contacts CT or CB before the other set can be moved. Initially all brushes are on contacts CB. Brushes 4-6-8 may be then traversed along windings L1-L3 either manually or mechanically until connected to contacts CT thus arranging the loads in star. Brushes 5-7-9 may then also be moved to contacts CT connecting the loads in delta. Either set of brushes may be left in an intermediate position. The rating of the regulator is equal to 1/3 of the load rating.
Patent GB-608118-A (GB)
Title: Improvements in moulds for the manufacture of hair combs
IPC: B29C45/26
Filed: 1946-02-22
Abstract: 608,118. Moulds for hair combs. MONNET, F. C., MONNET, R. C., and MONNET, R. C. Feb. 22, 1946, No. 5659. Convention date, April 12, 1945. [Class 87(ii)] A mould for hair combs is made in three parts, the part 1 having cavities 2 for forming the teeth and the parts 3, 4 having cavities 5, 6 to form the back, so that the burrs, formed by the parting line of the mould, are not formed on the teeth. The parts 3 and 4 have pins 7, 8 which engage cavities in the part 1. Closing devices 9, 10 are also provided. The moulding material may be injected into the mould.
Patent GB-1029191-A (GB)
Title: Arrangement for creating modulated electrical pulse trains
Inventor: FAULSTICH HELMUTH
IPC: H03K5/156
Filed: 1963-02-12
Abstract: 1,029,191. Pulse circuits. ZENTRALINSTITUT FUR KERNPHYSIK. Feb. 12, 1963, No. 5694/63. Heading H3P. In apparatus for generating a pulse train which is amplitude modulated by a triangular wave, the modulated wave is compared with the modulating triangular wave so as to create a D.C. error signal which is amplified and used to correct the linearity of the modulator. The loop gain is sufficient for the linearity error to be less than 0À005%. Fig. 1 shows apparatus for testing pulse amplitude analysers which comprises a crystal oscillator 1 feeding a pulse generator 2 and a pulse shaper 3. Each pulse from 3 cuts off the anode current of a pentode in a modulator 6 so as to provide a train of positive pulses the amplitudes of which are controlled by a linear triangular waveform, generated by an integrating circuit 7, 8. The time constant of the anode circuit is adjustable so as to control the trailing edge of each pulse. The modulated train is then passed via a further shaping circuit 9 to a cathode follower 10p giving positive pulses, and to an inverter 10n giving negative pulses. The output pulses are fed via a polarity changing switch S2 to a comparator 11 from which an error pulse is produced whenever the amplitude of any pulse in the train exceeds the instantaneous amplitude of the triangular wave from 8. The error pulses are amplified at 12 and lengthened at 13 so as to provide a D.C. control signal to correct linearity errors in modulator 6. The triangular wave from 8 is inverted at 14 if the negative output is used. The repetition frequency is independent of that of the triangular waveform from 8 and may be reduced by scaling circuits connected between blocks 1 and 2. Alternatively, if switch S1 is set to its lower position, pulses which are statistically distributed in time may be provided by means of a radio-active isotope X, a scintillation detector 4 and an amplifier 5. The invention may also be applied to the measurement of non- linearity of pulse-measuring amplifiers or analogue-digital converters.
Patent GB-742701-A (GB)
Title: Improvements in or relating to telescopic pitprops
IPC: E21D15/28
Filed: 1951-03-09
Abstract: 742,701. Pit props. SCHMIDT, A. March 9, 1951 [May 10, 1950], No. 5723/51. Class 20(2). The telescoping parts 1, 3 of a pit-prop are locked by independent wedges 8, 9 in slots in a prop lock 2 with or without the interposition of a locking element 6 or 7. The keys 6, 7 are of light alloy and are engaged by a galvanised surface on the wedges 8, 9. The inner prop member 1 may be of double H section, Fig. 4, having brake shoes 15, 16 adapted to be gripped between the flanges of the inner member by operation of wedges 8 acting on both sets of flanges by means of keys 6A. In a modification, Fig. 5, (not shown) each wedge 8 and one key operates on one set of flanges only. For in. stantaneous withdrawal of the prop an eccentric may be provided or two wedges connected by a sleeve passing over the tapered ends.
Patent GB-1459133-A (GB)
Title: Method for manufacturing bromine and bromine-iodine detergents  and disinfectants
IPC: C07C233/16
Filed: 1974-02-07
Abstract: 1459133 Bromine and bromine-iodine complexes in disinfectant compositions INST CHEMII PRZEMYSLOWEJ 7 Feb 1974 [7 Feb 1973 14 Feb 1973] 5755/74 Heading A5E [Also in Divisions C2, C3 and C5] A process for producing a bromine or brom ine-iodine containing complex of a non-ionic surfactant having detergent and disinfectant properties of the general formula in which R is an alkyl, aryl, alkaryl or alkylamidoalkyl group having 6-32 carbon atoms, X is Br or I, n is 2-4, and x is 2-50, comprises reacting a surfactant of the formula with iodine bromide (IBr) or a source of iodine-bromine ions (IBr 2 ) in a proportion not exceeding 1 mole of IBr or of (IBr 2 )<SP>-</SP> for each 2 moles of anhydrous or substantially anhydrous surfactant at a temperature of 0‹-60‹C. Complexes of the above formula are also claimed with the proviso that when X is Br, R is aryl or an alkylamidoalkyl group. The source of [IBr 2 -] ions may be prepared by adding liquid bromine to a saturated aqueous solution of an alkali metal or alkaline earth metal iodine in stoichiometric amounts at 0‹-60‹C, and IBr may be prepared by reacting stoichiometric amounts of iodine and bromine at 0‹-60‹C. The complex where X is iodine can be additionally stabilized by adding aqueous solutions of alkali metal or alkaline earth metal bromide. The resulting complexes may be dissolved in water optionally together with auxiliary agents for increasing their effectiveness as bactericides and detergents e.g. organic carboxylic acids, mineral acids and sulphonicacids. In the examples the following complexes are prepared as above:- (1) the bromine complex of nonylphenol etherified with octaethylene glycol (X=Br); (2) the bromine-iodine complex of stearyl alcohol etherified with octadecylethylene glycol (X=I); (3) the bromine complex of tallow alcohols etherified with 18 molecules of ethylene oxide; (4) the bromine-iodine complex of nonylphenol etherified with 8 molecules ofethylene oxide; (5) the bromine-iodine complex and the bromine complex of the N-monoethanolamide of tallow acids etherified with 35 molecules of ethylene oxide. Auxiliary agents which may be added are selected from sodium dodecylbenzene sulphonate, orthophosphoric acid and citric acid, and optional stabilizers added are NaBr or LiBr. The resulting product is diluted with water in a weight ratio of 1:5 to 1:200. Reference has been directed by the comptroller to Specifications 1252774 and 1355359.
Patent GB-834292-A (GB)
Title: Removal of metal contaminants from heavy oils
IPC: C10G67/04
Filed: 1957-02-20
Abstract: A process for purifying heavy oils having an initial boiling point of at least 900 DEG  F. and containing constituents non-vaporizable at atmospheric pressure comprises hydrogenating the oil at 200 to 2000 p.s.i.; 600 DEG  to 950 DEG  F.; a space velocity of 0.25 to 4.0 v./v./hr.; and a H2 partial pressure of 100 to 2000 p.s.i., in the presence of a sulphur resistant catalyst to convert non-volatile and non-extractable polymeric metallic contaminants to volatile and extractable monomeric compounds and subsequently extracting the monomeric compounds with butyrolactone, phenol, furfural, pyridine, acetic acid saturated with bromine or dimethylsulhoxide.  Heavy oils mentioned are crude petroleums, shale oils, tar sands, asphalts, tars, and their residue.  Catalysts mentioned are cobalt and/or molybdenum, nickel, vanadium, their oxides or sulphides, and mixtures thereof. They may be supported, e.g. on alumina, silica or metal hydrides, and promoted, e.g. with fluorine, chlorine, or rare earths. They may be used as fixed, fluidized or gravitating beds or in a suspensoid or slurry process.  Preferred solvent extraction conditions are 150 DEG  to 300 DEG  F. with an oil-solvent ratio between 1 : 1 and 4 : 1.  The hydrogenation may be preceded by an additional extraction or asphalt precipitation step.
Patent GB-396840-A (GB)
Title: Improvements in filters
IPC: B01D29/15
Filed: 1932-02-26
Abstract: 396,840. Filters. SVENSKA ACKUMULATOR AKTIEBOLAGET JUNGNER, 17, Riddaregatan, and MANDAHL, T. F., 5, Chapmansgatan, both in Stockholm. Feb. 26, 1932, No. 5808. [Class 46.] The invention relates to filtering elements formed of superposed wires or ribbons or of helically wound wire or ribbon with incisions which are larger at one edge of the ribbon than at the other and consists in forming the incisions 13, Fig. 3, with one edge 11 parallel to the longitudinal edges of the ribbon and the other' edge 12 at an angle thereto. The angle may be equal to the angle of pitch of the helix. Fig. 7 shows a ribbon having incisions which cross the ribbon obliquely. As shown in Fig. 1 a helically wound wire 1 is soldered or otherwise secured to a bottom piece 5 and a cover 6 having a central aperture 7 and inserted in a casing 8, the cover 10 of which holds the turns of the helix in contact. The casing has an inlet 9 and the cover an outlet 17 corresponding to the aperture 7.
Patent GB-792734-A (GB)
Title: Improvements in or relating to copper-containing disazo dyestuffs
IPC: C09B35/08
Filed: 1956-02-24
Abstract: The invention comprises dyestuffs which, in their free acid form, are of formula <FORM:0792734/IV (b)/1> and which may be made by coupling 1 mol. of tetrazotized 4,41-diamino-3,31-dimethoxy-1,11-diphenyl in either order with 1 mol. of a 1-naphthol disulphonic acid and 1 mol. of 2-benzoylamino - 5 - naphthol - 1,7 - disulphonic acid, and treating the product with a copperyielding agent under conditions to remove the methoxy groups.  The 3,6-, 3,8- and 4,8-acids are the preferred 1-naphthol disulphonic acids. Coupling is preferably effected in a sodium bicarbonate to carbonate alkaline solution, the second coupling being preferred in the presence of a tertiary organic base.  The dyestuffs dye cotton and fibres of regenerated cellulose in bright blue shades. Examples are provided of the preparation of the dyestuffs from the above specified components and their use in dyeing processes.
Patent GB-554710-A (GB)
Title: Improvements in and relating to electron microscopes
IPC: H01J37/27
Filed: 1942-05-01
Abstract: 554,710. Electron microscopes. BRITISH THOMSON-HOUSTON CO., Ltd. May 1, 1942, No. 5901. Convention date, May 1, 1941. [Classes 39 (i) and 40 (v)] An electron microscope operates by the shadow effect on a luminescent or photographic screen 11 of electrons diverging from a cold field emission pointed cathode 13 and passing through the object 19 ; to avoid overheating and disruption of the cathode point, the operating potential is applied to the cathode only in short impulses of 10<SP>-6</SP>-10<SP>-9</SP> secs. The point of the tungsten cathode is rounded to a radius of about 10-3 cms. The cathode is surrounded by a shield 15 at the same potential. The object may be supported in the aperture of accelerating electrode 17, or independently. A simple saddle-field electrostatic lens may be interposed between electrode 17 and screen 11. In the circuit shown, step-up transformer 22 charges condenser 24 to a high negative voltage each cycle. The centre electrode 32 of a three-element spark-gap 27 is energized at a chosen point in the cycle by peaking transformer 34, when the discharge between main electrodes 26, 28 connects the cathode to condenser 24. Immediately afterwards a second peaking transformer 44 energizes the centre electrode 43 of spark gap 40, the discharge between whose main electrodes 41, 42 connects the cathode to earth. The duration of the impulse is determined by the time-delay circuit 47, 48 in the secondary of the transformer 44. The spark-gaps 27, 40 may be replaced by gas-discharge relays.
Patent GB-373572-A (GB)
Title: Improvements in or relating to apparatus for burnishing axle journals or the like
IPC: B24B39/04
Filed: 1932-02-27
Abstract: 373,572. Burnishing by rolling. KRUPP AKT.-GES., F., Essen, Germany. Feb. 27, 1932, No. 5906. Convention date, May 30, 1931. [Class 83 (iv).] Axial rolling.-A burnishing machine especially for axle journals comprises main burnishing rollers for the cylindrical portion, and one or more detachable supplementary rollers disposed at right-angles thereto for the shoulder portion. As applied to a machine of the type described in Specification 188,209, [Class 83 (iv), Metals, Working], a roller Q is mounted on a removable dovetailed slide N engaging a slideway in a projection d<2> on the housing D, and located therein by a projection n2. The roller is secured to its supporting pin n<3> by a member R. Positive movement of the roller Q by the spindle F is obtained by preventing axial play of the spindle by horseshoe pieces S.
Patent GB-764390-A (GB)
Title: Improvements in or relating to class b transistor amplifiers
IPC: H03F3/26
Filed: 1955-02-28
Abstract: 764,390. Transistor amplifying circuits. MOULON, J. M. Feb. 28, 1955 [March 2, 1954], No. 5925/55. Class 40(6) In a class B amplifier the input impedance is arranged to be substantially the same for positive and negative input signals. A diode 7, Fig. 4 is arranged across the emitter-base path of a point contact transistor 1 to present the same input impedance in the forward and reverse direction, the quiescent emitter current being substantially zero. When a junction transistor 11 is employed with a diode, 17, Fig. 8 the difference between the quiescent base' current and the quiescent collector current is substantially zero. A pair of junction transistors may arranged in push-pull, Fig. 10 (not shown).
Patent GB-591987-A (GB)
Title: Improvements in or relating to dipole antennas
IPC: H01Q5/48
Filed: 1944-03-30
Abstract: 591,987. Impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 30, 1944, No. 5932. Convention date, Feb. 23, 1942. [Classes 40 (iii) and 40 (v)] The arms of a dipole aerial are fed through the outer conductors of two coaxial lines whose inner conductors are connected at their ends while the outer conductors are effectively connected at a quarter wavelength from their ends; so as to give the effect of an anti-resonant shunt and thus to match the aerial over a wide band of frequencies. The tubular arms 7, 9, Fig. 4, of the dipole are connected at 37, 39 to two supporting sleeves 1, 3, which are quarterwave at the mid-band frequency and are electrically connected by a base-plate 5 at their lower ends. The dipole arms are also connected at 37, 39 to the outer conductors of two coaxial feeders 15, 17 (indicated diagrammatically by single lines in Fig. 4), whose inner conductors are connected together at their ends through a bar 27 ; and the short-circuit 5 on the sleeves 1, 3 is equivalent to a short-circuit on the same point on the conductors 15, 17. 'A single feeder 31 is connected to the two feeders 15, 17 at a point 29 such that the feeder 15 is half a wavelength longer than the feeder 17 and the dipole arms 7, 9 are consequently fed at 37, 39 in phase opposition and constitute a resonant circuit, while the sleeves 1, 3 constitute an anti - resonant circuit connected in shunt, equivalent to a short-circuit across the conductors 15, 17. The dipole resonates, however, at a slightly lower frequency than that determined by the wavelength, and the resultant impedance facing the feeder 31. is approximately constant, at half the characteristic impedance of each feeder 15, 17, over a relatively wide frequency band. Feeders 31 having the same characteristic impedance as the feeders 15, 17 can be used, however, if a pair of dipoles are coupled in the manner shown in Fig. 4, the parts 31, 43 being quarter-wave so as to act as impedance-inverters; in this case the impedance facing the main feeder 45 will be matched to it.
Patent GB-206078-A (GB)
Title: Improvements in electrical junction boxes
IPC: H02G15/113
Filed: 1923-03-01
Abstract: 206,078. Harvie, D., and Harvie, D. March 1, 1923. Drawings to Specification. Junction boxes.-The bolts securing together the sections of a junction box serve also as anchorages for eye-bolts securing the glands to the box, the bolt eyes being arranged adjacent, to the cable entries and being suitably spaced.
Patent GB-959121-A (GB)
Title: Toothed meshing gears with parallel axes
Inventor: STOTT THOMAS CHARLES FELIX
IPC: F16D21/04
Filed: 1962-02-16
Abstract: 959,121. Toothed gearing; change-speed gear and control. VAUXHALL MOTORS Ltd. Feb. 7, 1963 [Feb. 16, 1962], No. 5974/62. Headings F2D and F2Q. In a motor vehicle change-speed gear comprising, on parallel axes, a first gear axially slidable into mesh with at least one second gear, to prevent jumping-out of gear due to, e.g. misalignment, the teeth of the respective gears are complementally axially tapered, on both flanks, so that under load said first gear is biased in the meshing direction in both drive and overrun, and thrust means are provided to limit resulting axial gear movement. The tapering, e.g. 0.001 inch or 0.002 inch per flank, is produced by grinding, by a forming or finishing shaving cutter which has its axis inclined to (i.e. converging on) that of the gear or has complementary teeth and is fed in radially, or preferably by a gear cutter travelling in the same plane as, but along an axis inclined to, that of the gear. The gear teeth are of normal proportions at the face-width mid-point. In the four-forward and one reverse speed gear-box shown comprising conventional constant mesh forward gears engaged by forkactuated positive clutches the sliding members of which are splined on an output shaft 24, the reverse train comprises a tapered tooth idler 10 axially slidable into mesh with oppositely tapered tooth gears 16, 40 respectively fast on a constantly driven lay shaft 30 and formed on the 1-2 clutch sliding member. An interlock device acting on the gear selector rods to prevent simultaneous movement thereof comprises balls 90, 78 respectively engageable with a recess 92 in a reverse rod 88, recesses 94, 80 in a 1-2 rod 50 and a recess 82 in a 3-4 rod 62, and a plunger 96 located in a cross-bore of the rod 50 and engaging the balls 90, 78. The leftward taper induced thrust of the idler 10 is taken by a face on the casing, and the rightward thrusts of the gears 16, 40 are respectively taken by the casing through a thrust bearing 100 and through the rod 50 and the interlock ball 90. In the three forward and one reverse speed gear-box of Fig. 6 (not shown), reverse is obtained by axially sliding a tapered tooth gear on the gear-box output shaft into mesh with a tapered tooth idler gear permanently meshing a tapered tooth lay shaft gear, taper induced end thrusts of the three gears being respectively taken on an output shaft shoulder or through a selector rod interlock device, a thrust face on the casing and a thrust bearing.
Patent GB-1243178-A (GB)
Title: Improvements relating to "hall effect" devices
Inventor: HOEY STEPHEN JOHN
IPC: G01R31/26
Filed: 1967-09-22
Abstract: 1,243,178. Semi-conductor devices. PLESSEY CO. Ltd. 23 Dec., 1968 [22 Sept., 1967; 7 Feb., 1968], Nos. 43259/67 and 6023/68. Heading H1K. A Hall effect device comprises a MOSFET having a source 2, a metal gate 6 insulated from the semi-conductor body 1 by an insulating layer 5, and two or more drains 3, 4 the device being arranged so that an appropriate voltage applied to the gate electrode establishes an inversion channel below the oxide layer 5 between the source and the drains, wherein the current flow in that inversion channel, being dependent upon any magnetic field acting on the semi-conductor body, produces a voltage differential between the drains proportional to such a magnetic field due to the deflection of the current by the field preferentially towards one of the drains. The device is used to measure magnetic fields. The semi-conductor material is silicon, the insulating layer is of silicon oxide and the metal gate is of aluminium.
Patent GB-162857-A (GB)
Title: Improvements in mouthpieces for feeding bottles
IPC: A61J11/00
Filed: 1920-02-28
Abstract: 162,857. Yooll, F. R. Graham-. Feb 28, 1920. Addition to 124,628. Feeding-bottles; feeding-bottles, teats for. - A teat or mouthpiece for feeding-bottles as described in the parent Specification is attached to the bottle mouth by a stopper which is split vertically so that it can be opened out for cleaning purposes. Alternatively the stopper is made in halves 1, 2, Fig. 1, moulded integrally with and at each end of the teat 3, the meeting faces of the stopper being formed with one or more milk passages 4, 5, 6, Fig. 5. A cap or cover of india-rubber, metal, or other suitable material may be pushed or screwed on to the neck of the bottle to hold the teat and stopper in position thereon, a central aperture being provided in the cap for the reception of the teat. A suitable shield may also be moulded integral with the teat and stopper.
Patent GB-1527641-A (GB)
Title: Friction clutch cover assemblies
IPC: F16D13/58
Filed: 1976-02-17
Abstract: 1527641 Friction clutches AUTOMOTIVE PRODUCTS Ltd 7 Feb 1977 [17 Feb 1976] 06087/76 Heading F2C In a friction clutch of the type in which a presser plate (24) mounted by flexible straps 28 on a cover 11 is urged by a diaphragm spring 12 to press a clutch plate against a flywheel, the diaphragm spring 12 is pivotally connected to the cover 11 by a plurality of generally C-shaped members 22 each of which passes through two adjacent holes 16 in the cover 11 and embraces the base-end of a radially inwardly extending finger 14 of the diaphragm spring 12. The C-shaped members 22 may be of wire, may seat in an annular groove 19 of the cover 11 and may permit limited axial displacement of the spring 12 relative to the cover 11. The spring 12 may be provided with radially extending ribs and with an annular groove for accommodating the wire members 22.
Patent GB-1129786-A (GB)
Title: Forming tube for glass fibers
IPC: B65H75/18
Filed: 1967-02-09
Abstract: 1,129,786. Making tubes. SONOCO PRODUCTS CO. 9 Feb., 1967 [16 March, 1966], No. 6237/67. Heading F2P. A non-rigid forming tube for glass fibres comprising at least one spirally wound ply 21, 23 of paper having a resin impregnated paper ply 32 spirally wound therein is manufactured by winding the paper ply or plies on to a stationary mandrel 149 impregnating a further paper ply 32 having a flexibility, porosity and strength greater than the other paper with a resin as by passing through a resin filled receptacle 34. The further ply 32 is then wound on to the partly formed tube, the angle of winding of the plies being within the range of 17 to 35 degrees. A strip 42 of a release material is wound on the resin impregnated layer to compress the layers and prevent the resin from escaping from the impregnated ply. The strip 42 may be of a material such as polyethylene or Mylar (registered Trade Mark). Finally the strip 42 is removed. The resin may comprise an acrylic resin in the form of an aqueous emulsion such that curing may take place at room temperature before the strip 42 is removed from the forming tube. A roughened surface is produced by this method. The fibres of the paper plies run longitudinally thereof so that the tube can be folded longitudinally to collapse the tube (Fig. 5, not shown).