baber/WOPTO huggingface dataset:
Patent GB-888515-A (GB)
Title: Improvements in asynchronous induction motors
IPC: H02K3/26
Filed: 1958-08-22
Abstract: 888,515. Electric motors. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. Aug. 22, 1958 [Nov. 13, 1957], No. 27087/58. Class 35. An asynchronous induction motor, Fig. 1, comprises a stator member carrying a winding 1 constituted by conductors formed by a printed circuit technique and separated by a substantially flat annular air-gap from a rotor member carrying a squirrel-cage winding having a plurality of radial or substantially radial conductors 20 joining inner and outer annular conductors 17, 16. The stator member comprises a magnetic disc 2 which may be a spirally wound metal ribbon which is carried by a supporting-plate 3 and over the face of which is printed the winding 1 which may be made in the manne described in Specification 874,394, which is referred to. The winding may be of the series wave kind, Fig. 2, supplied with three-phase current via terminals E1 . . . E3 and S1 . . . S3 and forms either a delta- or a star-arrangement, Fig. 4; it is either built-up by successive conductors and dielectric films on the disc 2 or is made separately and glued thereto, and interconnections between conductors are by metallization either over the edges of or through holes in the intermediate film. The rotor member comprises a sintered material or a spirally wound magnetic metal ribbon disc 4 mounted on a shaft 7 borne by bearings 8 via a hub 6 which may be integral with the inner conductor 17, and the squirrel-cage winding, Fig. 5, is either photo-etched or cut from a metal foil and glued to the disc 4. Alternatively the rotor may be as disclosed in Divisional Specification 888,516, which is referred to.
Patent GB-390184-A (GB)
Title: Improvements in and relating to electric valve circuits
IPC: H02M7/15
Filed: 1931-09-29
Abstract: 390,184. Converting ; phase-changing. BRITISH THOMSON-HOUSTON Co., Ltd., Crown House, Aldwych, London.- (Assignees of Bedford, B. D. ; 329, Germania Avenue, Schenectady, New York, U.S.A.) Sept. 29, 1931, No. 27127. Convention date, Sept. 29, 1930. [Class 38 (ii).] An alternating potential of peaked wave form is produced from a three-phase supply 31 (connected through a phase shifter 29) by means of a pair of valves 22, 23 with grids overexcited by a transformer 28 so that they alternately conduct current from a battery 18 to windings 20, 21 of a transformer 17, the circuit being completed through a large reactor 19. As the valves operate beyond saturation point and the inductance of the reactor 19 is great as compared to that of the windings 20, 21, the reversal of flux in the transformer 17 is sudden and a potential of peaked waveform is generated in the secondary 16. This can be utilized with a grid bias battery 15 to give an instantaneous starting potential on the grid of a valve 13 of the discontinuous control type, so that the valve can only come into operation at one predetermined point in the positive half-cycle irrespective of the time of closing of a switch 12. In the circuit shown in Fig. 2 employing valves 47, 48 of the discontinuous control type for the inversion of current supplied from a D.C. source 40 to an A.C. load 41, the potential of peaked waveform is applied to the grids of the valve from connections 58 to overcome the negative bias 50, 54. The instantaneous application of starting potential to the grids of the valves 47, 48 ensures that, in starting up, the valve having positive anode potential when the switch 57 is closed shall not be started so late in the half-cycle that its current will be large when the other valve is rendered conductive, thus preventing short circuit of the D.C. supply. In the circuit shown in Fig. 3 the supply of current to a D.C. motor 61 is controlled and reversed by two oppositely connected rectifiers A, B fed from a source A.C. 60. In such a system phase shifters 71, 83 are geared to produce opposite changes of phase of the grid potentials of the pairs of valves 63, 64, and 75, 76. Since with sine wave grid potential a change of phase beyond 180‹ and up to 360‹ produces permanent full load conditions, such waveform does not permit the control of both the rectifiers A, B together so as to put one only into operation and regulate each by 180‹ range of grid phase displacement. By introducing into the grid circuit of each rectifier an apparatus 73, 84 to convert the sine wave to a wave of peaked form, a phase change between 180-360‹ produces extinction of the valves, so that the valves of both rectifiers can be controlled by variations of the phase shifters 71, 83 on opposite sides of the zero point, at which point both rectifiers are brought to no load conditions.
Patent GB-1185028-A (GB)
Title: Improvements in or relating to Embossing Devices
IPC: B44B5/02
Filed: 1966-06-17
Abstract: 1,185,028. Embossing rollers. MOLINS MACHINE CO. Ltd., D. J. BARBER, and J. R. BARLOW. 13 June, 1967 [17 June, 1966], No. 27147/66. Heading B6J. An embossing roller is provided with a surface consisting of a cast epoxy resin. Preferably, the roller is incorporated in an embossing device of the type illustrated in Fig. 1 of Specification 711,771 as the mating roller; this roller comprises a hard mandrel, e.g. steel, covered with a thin sleeve of the epoxy resin, the thickness of the sleeve being not greater than 2 mm. This roller is provided with an impression corresponding to the pattern or design on the engraved embossing roller, by applying heat to the hard steel of the latter, and then pressing the engraved roller and the mating roller together while slowly rotating, a torque of around 60 pounds-feet being applied at 70‹ C.
Patent GB-602636-A (GB)
Title: Improvements relating to electrical plug and socket connections
IPC: H01R13/115
Filed: 1945-10-17
Abstract: 602,636. - Two-part couplings. LUCAS, Ltd., J.., and TAYLOR, H. C. Oct. 17, 1945, No. 27207. [Class 38 (i)] In a plug and socket connection, the socket is made from a resilient metal strip a, Fig. 1, bent into a trough-like form, the tongues e being folded inwardly to receive a plug between them and the adjacent part of the socket. The projections b, c are bent to receive a conductor end and insulation, the socket being recessed in the vicinity of the projections c. A. holder for a plurality of sockets comprises discs g which clamp the lugs f and thereby retain the sockets, Fig. 5, holes h, i being provided in the discs for the sockets and plugs respectively. Spacers j may be provided between the discs.
Patent GB-1083647-A (GB)
Title: Ironing boards
IPC: D06F81/00
Filed: 1965-06-29
Abstract: 1,083,647. Ironing boards. A. N. HADLEY. June 29, 1966 [June 29, 1965], No. 27383/65. Heading D1A.  An ironing board 10, with foldable trestle legs, has at one end an asbestos sheet whose edge is held by U-section frame 13 which fits over the end of the ironing board. The board 10 is cut from compressed wood fibre and carries padding covered by a fabric and a temporary transparent plastic protective layer. The pairs of trestle legs are respectively hinged to the underside of board 10 by brackets 111 and engaged in one of a series of hooked sections 12 to hold the board at various heights. The fourth edge of the asbestos is held in frame 141 and a tongue 161 welded to frame 13 engages the underside of board 10. The end of board 10 is reduced so that, when fitted, the frame 13 merges with the sides of board 10.
Patent GB-274187-A (GB)
Abstract: 274,187. British Dyestuffs Corporation, Ltd., Fairbrother, T. H., and Renshaw, A. April 14,1926. Disinfectants.-The water in flushing cisterns for urinals is rendered disinfectant by placing therein a block composed of auramine and plaster of Paris, diatomite or a volatile solid such as naphthalene, with or without the addition of sodium chloride. Auramine may be replaced by any other salt of amino-tetramethyldiaminodiphenyl-methane. In one form diatomite is cast into a hollow brick and baked, and the brick filled with a mixture of auramine and plaster of Paris.
Patent GB-603365-A (GB)
Title: Vehicle wheel
IPC: B60B3/16
Filed: 1945-10-18
Abstract: 603,365. Vehicle wheels. KELSEY-HAYES WHEEL CO. Oct. 18, 1945, No. 27423. Convention date, Oct. 30, 1944. [Class 144 (i)] In a detachable wheel, the outwardly. projecting bolt-engaging bosses 9 are formed with inwardly divergent faces 11, 12 to engage complementary grooves in the attachmentnuts 10. In the (disc) wheel shown, the centre is formed, adjacent the bosses 9, with annular ribs 13, 14 connected by outwardlydirected ribs 15. Inwardly-directed projections, in facial alinement with the ribs 13, 14, are provided between the ribs 15.
Patent GB-761311-A (GB)
Title: Process for the production of metal borides or mixtures of metal borides and carbon boride
IPC: C01B35/04
Filed: 1954-09-23
Abstract: Pure metallic borides or mixtures of metallic borides of the group of metals comprising titanium, vanadium, chromium, zirconium, niobium, molybdenum, hafnium, tantalum and tungsten are produced by heating the oxide or oxides of the group with carbon and boron carbide to at least the metathesis temperature of boron carbide to metal boride and carbon monoxide and in an atmosphere of carbon monoxide, preferably at a pressure of no greater than one atmosphere.  The proportions are chosen so that the boron carbide is completely decomposed and substantially no carbides are left.  The reaction may be effected under substantial mechanical pressures of at least 500 lbs. to the square inch so as to produce shaped articles of borides and not granular material.ALSO:Mixtures of metallic borides of the group of metals comprising titanium, vanadium, chromium, zirconium, niobium, molybdenum, hafnium, tantalum and tungsten are produced by heating the oxides of the group with carbon and boron carbide to at least the metathesis temperature of boron carbide to metal boride and carbon monoxide and in an atmosphere of carbon monoxide, preferably at a pressure of no greater than one atmosphere.  The proportions are chosen so that the boron carbide is completely decomposed and substantially no carbides are left.  The reaction may be effected under substantial mechanical pressures of at least 500 lbs. to the square inch so as to produce shaped articles of borides and not granular material.  If the proportions are chosen to leave boron carbide behind after the complete decomposition of the oxide then mixtures of metal boride or metal borides and carbon boride are produced.
Patent GB-1188513-A (GB)
Title: Improvements in or relating to Suction Dredgers
Inventor: VENUS JAMES
IPC: E02F3/90
Filed: 1966-06-20
Abstract: 1,188,513. Suction dredgers. APPLEDORE SHIPBUILDERS Ltd., and PENFOLDS ENG. & CONSTRUCTION Ltd. 20 June, 1967 [20 June, 1966], No. 27537/66. Heading B7A. In a suction dredger the suction pipe 11 is carried by two gantries 28, 30 travelling athwartships parallel to one another on rails to move the pipe bodily between an inboard and an outboard position with a rectilinear motion. In the embodiment described the suction pipe is in two lengths 11A, 11B hinged at 25 and when stowed extends fore and aft in a folded condition. Gantry 28 handles the forward end of the folded pipe and gantry 30 the after end of the pipe.
Patent GB-1000188-A (GB)
Title: Moving mercury cathode electrolytic cell
Inventor: GLOVER SYDNEY THOMAS
IPC: C25B11/18
Filed: 1962-07-18
Abstract: A cell for producing chlorine by electrolysis of brine has a cathode support disposed vertically or at an angle of up to 30% to the vertical and provided with a flowing mercury cathode film and an adjacent parallel anode of titanium coated with platinum, rhodium, iridium, or an alloy consisting of two or more of these metals.  The electrodes may be planar, cylindrical or cone frusta with the cathode inside the anode or between anodes which may be perforated.  Mercury is fed by a pipe passing up inside the cathode support and brine may be fed to submerge the electrodes or if the anode is imperforate the brine may be confined within it except at the bottom where it forms a pool over the amalgamated mercury.  Provision is made for removal of evolved gas, amalgam and brine.  If the electrodes are cone frusta, the electrode spacing may be varied by raising or lowering the outer (anode) electrode.  Several cells may be arranged their anode, brine and mercury supply and removal and gas removal connections in parallel, the cathode connection being made in the mercury supply.
Patent GB-797844-A (GB)
Title: Method of growing p-type large single crystals
IPC: C30B7/00
Filed: 1955-09-28
Abstract: <PICT:0797844/III/1> <PICT:0797844/III/2> <PICT:0797844/III/3> <PICT:0797844/III/4> <PICT:0797844/III/5> P-type crystals are grown by positioning a P-type seed in a slot in a holder with the Z crystallographic axis of the seed extending in the direction of the slot depth, exposing the seed to a growing solution of the crystal salt to grow a crystal bar which beyond the slot extends across the holder perpendicular to the Z axis and which is elongated in the direction of the Z axis.  The end cap 20 (Fig. 1) of a crystal bar of primary ammonium phosphate is removed from the bar by a cut perpendicular to the Z axis at the base 31 of the cap, and a seed crystal is obtained by cutting along planes 32 and 33 parallel to the Z axis and at 45 degrees to both the X and Y axes.  The seed crystal 47 is placed in a slot 45 (Fig. 6A) in a tray 44 which is immersed in a solution of the salt and a crystal is grown by lowering the temperature over a period of several weeks.  The crystal bar 48 (Fig. 6C) which is thus grown is elongated in the Z axis and has a square cross-section with an area determined by the dimensions of the base of the seed crystal and a pyramidal end cap 49.  The original pyramid faces of the seed crystal may be removed before growing the crystal bar, if desired.  The crystal may be grown between upstanding baffles 53 and 54 (Fig. 10) to obtain a crystal bar 58 of hexagonal cross section.  The seed crystal may be placed in a slot 61 in a thin elongated holder 60 (Fig. 15) and a crystal grown in both directions along the Z axis to obtain a crystal bar 68 having two triangular prisms on opposite sides of the holder 60.  Other P-type crystals which may be grown are potassium dihydrogen phosphate, rubidium dihydrogen phosphate, and the dihydrogen arsenates of ammonium, potassium and rubidium.  Specification 762,841 is referred to.
Patent GB-782401-A (GB)
Title: Improvements in or relating to marking indicia on soft plastic strip material
IPC: B41F19/02
Filed: 1955-09-28
Abstract: 782,401. Printing machines. AMERICAN CYANAMID CO. Sept. 28, 1955 [Oct. 4, 1954], No. 27617/55. Class 100(2) [Also in Group XV] An appparatus for marking indicia on soft plastic strip material adapted for the manufacture of soft plastic capsules, comprises a marking roller and co-operating pressure roller adjustably located with respect to the marking roller, positive drive means at each end of the marking and pressure rollers, and means, adjustable while the machine is in operation, to axially and angularly adjust the marking roll. A plastic strip 13, to be formed into capsules, is fed between a marking roller 11 and pressure roller 12. The rollers 11 and 12 are mounted in individual bearings in a frame 21. One end of the roller 11 is pressed by a spring 26 against a screw 28 engaging a bar 27 engaging a slot in the shaft 25 carrying the roller 11. Thus adjustment of the screw 28 effects lateral adjustment of the roller 11. The shaft 25 is positioned in journal blocks 22 each having a positioning ball 31 pressed upwardly by a spring 32, the ball 31 and spring 32 being retained by a retainer 33 slidable in the blocks 22. The pressure roller 12 is. journalled in blocks 34 slidable in slots 23 and resting on the balls 31. Screws 36 adjust the gap between the rollers 11 and 12. One end of the roller 11 is driven by a pinion 60 engaging a pinion 30 on the shaft 25, such that the roller 11 is driven at the same speed as the strip. The pinion 60 is on one end of a hollow shaft 61 carrying a helical gear 64 keyed thereto but axially slidable thereon. The shaft 61 is carried by a spindle 66 threaded through the frame 21. A helical gear 64, carried by the shaft 61, is angularly, adjustable by a knurled knob 67 on the spindle 66 to vary the angular setting of the roller 11. The pinion 30 drives a pinion 38 on the roller 12, while a further pinion 29 on the shaft 25 drives a pinion 37 on the roller 12. Inking-apparatus:- Ink is supplied to roller 11 by a rubber transfer roller 14 and a rubber inking roller 15 partially submerged in an ink tough 16. A wiper roller 18 controls the quantity of ink transferred by the roller 15 and spreader rollers 19 and 20 ensure a uniform distribution of ink on the roller 11. The pressure between the rollers 14 and 15 determines the rate of ink transfer such pressure being adjustable by screws 45 which compress springs 44 positioned between the roller journals. The position of the roller 14 with respect to the roller 12 is adjustable by tapered screws 42 which engage slidable bearings carrying the roller 14. The rollers 14 and 15 are driven through pinions 50...53 by the pinions 29, 39. Ink is supplied to the trough 16 by a pipe 57 leading from an ink reservoir 59. Specifications 617,723, 631,484 and 674,172 [all in Group V] are referred to.
Patent GB-1171230-A (GB)
Title: Improvements in or relating to methods of and apparatus for manufacturing Heat Exchanger Tubes
IPC: B21C37/26
Filed: 1967-06-15
Abstract: 1,171,230. Making heat exchanger tubes; soldering, MECANO-BUNDY G.m.b.H. 15 June, 1967 [16 June, 1966; 22 Nov., 1966; 3 Jan., 1967], No. 27655/67. Headings B3A and B3R. [Also in Division F4] A heat exchanger tube is made by providing a helix of wire or strip 2 on a multi-layer strip 3 of steel and a copper layer on at least the exterior and heating the assembly to a temperature between the melting-point of copper and steel to braze the layers of the strip together and the wire or strip to the tube. The helix is closely wound and expanded along the tube by a sleeve 4 with a pair of pegs 5, 6 which separate the tuns as the sleeve rotates. The strip for the fin is also multi-layer with a steel core and a layer of copper on each side. The wire may be copper-coated and wetted with flux. Alternatively the wire is uncoated and the outer layer of the tube is made thicker. The helix may be wound directly on to the tube or on to a mandrel (not shown) whose diameter is greater than the tube. The strip or wire is fixed in a slot in the tube before axial expansion by the sleeve 4. The mandrel may be a frusto-conical sleeve rotated at the same speed as the tube during the axial feed of the tube therethrough. The heat exchanger may be zinc-plated after assembly.
Patent GB-751701-A (GB)
Title: High frequency hybrid circuit
IPC: H01P1/18
Filed: 1954-09-24
Abstract: 751,701. Impedance networks. STANDARD TELEPHONES & CABLES, Ltd. Sept. 24, 1954 [Oct. 2, 1953], No. 27666/54. Class 40 (8). A hybrid circuit comprises conductors 2, 4, a conductive post 14 at ground potential coupled to conductor 2, and coaxial lines 5, 6, 7, 8, the inner conductors of which are connected to the conductor 4 by impedance transformer sections 5c to 8c, and the outer conductors are connected to the conductor 2. Matching stubs 16 to 19 are provided, and their length may be adjusted by coupling them at different heights on the post 14. The distance between lines 5 and 8 is made #/ 2  greater in length at the highest operating frequency than the distance between the other lines. When the distance between the other lines is #/4, then a signal coupled to the line 5 is coupled out of lines 6 and 8 but not out of line 7. The circuit may be used as a power divider with any spacing between the lines. If a frequencymodulated carrier signal is coupled at 5 and a carrier signal modulated by a second frequency is coupled at 7, then the output at line 8 will comprise only the sideband signals while the output at line 6 will include the carrier frequency. An adjustable tuning disc 10 is provided to effectively change the spacing of the conductors 2, 4. Alternatively or in addition to the disc 10 a dielectric or conductive tuning vane 12 may be provided. The plate 4 may be supported by dielectric spacers, instead of the inner conductors of the lines.
Patent GB-1392628-A (GB)
Title: Polyimides
IPC: C08G73/12
Filed: 1972-06-13
Abstract: 1392628 Laminated products GENERAL ELECTRIC CO 13 June 1972 [16 July 1971] 27666/72 Heading B5N [Also in Divisions C3 B2 H1 and C2] Laminates comprise films of a polyimide (P), or layers of asbestos, mica, or glass fibres to which solutions of (P) have been applied. (P) has repeating units (I) where: the R groups are the same or different and are C 1-40  hydrocarbon radicals or groups consisting of 2 aryl residues joined by C 1-10  alkylene, -S-, -SO 2 -, -CO-, or -O-, any aryl groups being optionally halogenated; R<SP>1</SP> is any divalent organic radical; and is 0 or 1.
Patent GB-1512497-A (GB)
Title: Process for the preparation of palladium-on-carrier catalysts
IPC: C07C51/36
Filed: 1976-07-02
Abstract: 1512497 Preparation of aniline; o-toluidine and phenylpropionic acid by reduction RUHRCHEMIE AG 2 July 1976 [10 July 1975] 27709/76 Heading C2C [Also in Division B1] Aniline, o-toluidine and phenylpropionic acid are prepared by reduction of nitrobenzene, onitrotoluene and cinnamic acid respectively with H 2  in the presence of a palladium on charcoal catalyst made by separately but simultaneously adding a 0À1-2N alkali metal hydroxide solution and a palladium salt solution containing 0À1-5 wt. per cent Pd to a suspension of charcoal in water, the pH of the suspension being maintained between 7À5 and 11À0 and the temperature below 20‹ C. during the additions, separating the charcoal from the suspension and drying it at elevated temperature.
Patent GB-1472586-A (GB)
Title: Dental handpiece
IPC: A61C1/18
Filed: 1974-06-21
Abstract: 1472586 Dental handpieces KALTENBACH-VOIGT 21 June 1974 [6 July 1973] 27788/74 Heading A5R A dental handpiece rotates a dental instrument when the latter is coupled to a driving shaft 2 rotatably mounted in a sleeve portion 1 rotatably releasably connectable at 4 to a coolant supply portion 3, an instrument coolant conduit 6 in portion 3 being connectable by an at least part annular passage 7 at the interface between the portions to conduit 8 in portion 1 via an inwardly inclined bore, a ;bore in an extension guide portion 13 parallel to the handpiece axis A and a radially outwardly extending bore. The annular passage 7 may be in portion 1 and/or in portion 13, with O-rings 9, 10, one each side of passage 7 to prevent leakage. Passage 7 may be part annular and comprise a number of individual circumferentially spaced portions if full 360‹ pivotal movement between portions 1, 3 is not required. Conduit 8 passes inside and/or outside sleeve portion 1 to a spraying device adjacent the dental instrument. In a second embodiment (Fig. 2, not shown) the coolant supply portion 3 includes a sleeve (11) overlapping sleeve portion 1 in a direction parallel to axis A, the conduit 6 of portion 3 extending radially inwardly to passage 7, the coolant then flowing further radially inwardly to conduit 8 in sleeve portion 1. In a third embodiment (Fig. 3, not shown), the extension guide portion 13 of coolant supply portion 3 has a radial surface (14) engaging a corresponding surface of sleeve portion 1. Coolant passes from conduit 6 through portion 13 parallel to axis A to channel 7 in the corresponding surface of sleeve portion 1.
Patent GB-268726-A (GB)
Title: Improvements in the purification of hydrocarbons and the like by liquid sulphur dioxide
IPC: C10G21/10
Filed: 1926-11-06
Abstract: 268,726. Allgemeine Ges. f³r Chemische Industrie. March 30, 1956, [Convention date]. Mineral and tar oils, purifying.-In the purification of hydrocarbons by liquid sulphur dioxide all water is first removed by treating the hydrocarbon with only a small fraction e.g. 10-25 per cent of the dioxide required for complete purification, and separating the extract.