baber/WOPTO huggingface dataset:
Patent GB-935110-A (GB)
Title: Method of producing plastic works of art, reliefs or other shaped articles having a metal surface
Inventor: FORMANEK MIROSLAV
IPC: B44C3/04
Filed: 1960-10-28
Abstract: A synthetic resin article is formed with a layer of metal, e.g bronze, copper, brass, zinc, aluminium, stainless steel, tin or lead by coating a mould surface with the metal and applying an epoxy resin backing.  The metal may be sprayed on the mould which is intensely cooled at the point of impact.  The mould may be coated with synthetic resin or a metal to increase adhesion or alternatively a metal powder, e.g. zinc, may be added to material of the mould.  The mould may be heated in a protective atmosphere or in a reducing gas or vapour, e.g. carbon monoxide or alcohol to the sintering temperature and may be compacted by hammering.  The metal may be applied in layers not exceeding 0.1 mm. thick in separate strips, e.g. chequered or cross-wise.  Alternatively, the metal may be sprayed into a refractory mould heated to a lower temperature than the melting point of the metal.  The metal may be applied by coating by evaporation in a protective atmosphere.ALSO:A synthetic resin article is formed with a layer of metal, e.g bronze, copper, brass, zinc, aluminium, stainless steel, tin or lead, by coating a mould surface with the metal, applying a layer of epoxy resin and backing with a further layer of e.g. epoxy resin and glass fibre.  The article may be a work of art, mould or pattern, a decorative part of a car body or a railing.
Patent GB-1324255-A (GB)
Title: Brightening layer for photographic materials
IPC: G03C1/815
Filed: 1970-07-31
Abstract: 1324255 Brightening layers for photographic materials EASTMAN KODAK CO 31 July 1970 [4 Aug 1969] 37152/70 Heading G2C Photographic materials, such as light-sensitive silver halide black-and-white or colour materials or silver salt diffusion or dye image transfer receptor elements, contain a brightening layer comprising a layer of hydrophilic colloid e. g. gelatin containing a dispersion of an oil-soluble vinylene optical brightening agent dissolved in a photographically inert, hydropholic organic solvent consisting of a polymer having a glass transition temperature greater than 25‹C. and (i) containing recurring units derived from acrylonitrile, (ii) being derived from at least one alkyl alkacrylete having up to 5 carbon atoms in the "alk" portion or (iii) containing -(CH 2 )x-CONH- units where x is an integer up to 11, or of a polymer mixture containing such a polymer and having a glass transition temperature greater than 25‹C. The dispersion is made by dissolving the brightening agent in the organic solvent together with a temporary liquid solvent e.g. ethyl acetate, dispersing the solution in the colloid and removing the temporary solvent by evaporation or washing. Polymers used as the organic solvent include polyacrylonitrile, poly(methyl methacrylate) polycaprolactam and copoly (butyl butacrylate acrylic acid).
Patent GB-846555-A (GB)
Title: Improvements in or connected with the mechanical brake systems of winding engines, haulages, and other rotating machines
IPC: B66D5/26
Filed: 1956-12-05
Abstract: 846,555. Fluid pressure-operated brakes. ROBEY & CO. Ltd., and CROMPTON, A. Feb. 27, 1958 [Dec. 5, 1956; Oct. 23, 1957], Nos. 37173/56 and 33062/57. Class 103 (1). A braking system has one or more pairs of shoes disposed exteriorally and diametrically on either side of a brake drum, the shoes being carried by sliding elements guided in a frame for radial movement relative to the drum, the shoes being urged toward the drum by means acting on, and disposed symmetrically with, the sliding elements, and moved away from the drum by fluid pressure means. Each element 4 carrying a shoe 2 is slidable in part circular guides 7 in a fixed rigid frame 1, compression springs 8 being interposed between the element 4 and a cover 9 slidably secured on bolts 10 to frame 1; cylinders 5, 12 fixed to frame 1 have rams 6, 13 abutting the element 4 and cover 9 respectively, and screws 11 limit movement of shoe 2 toward frame 1 to adjust for wear. Initially hydraulic pressure is admitted to cylinder 12 to move cover 9 and compress springs 8 to a required degree determined by the hydraulic pressure, the bolts 10 then being adjusted to hold the springs 8 at this compression and the pressure is relieved from cylinder 12. The brake is then normally applied by the springs and is released by admitting pressure fluid to the cylinder 5 to compress springs 8 through ram 6 and element 4. In Fig. 3, a double cylinder and ram device secured to the frame 1 has one ram 17, 18 holding the brake applied and a second ram 15, 16 in which the first slides, to which hydraulic pressure is admitted capable of overcoming the first ram to release the brakes, an extension of the piston 16 forming the cylinder 17; should the pressure in the ram 17, 18 fail then the brakes are applied by a weight 25 through levers 24a, 24 and cams 23, 23a, the weight normally being held up by the pressure from the ram 17, 18 acting on plunger 21. In Fig. 5, not shown, the double cylinder arrangement of Fig. 3 is applied to a unit of the type shown in Fig. 1, the springs applying the brakes in an emergency on failure of pressure in the first ram. In Fig. 7, not shown, is a system employing a series of pairs of diametrically-opposed brake units disposed at intervals along a brake winding drum, all connected to an operating valve which can be operated electrically, mechanically or hydraulically in an emergency, the pressure being supplied from a pump through a non-return valve from a reservoir, a separate emergency valve may be included. Whilst in Fig. 8, not shown, the pairs of brake units are divided into two sets, one for normal use and the other for emergency, a valve normally supplying fluid to the normal brakes being automatically switched to apply these brakes in an emergency but is prevented from operating if the emergency brakes are already applied, the emergency brakes being operated at will by an operator. Specifications 540,921 and 633,129 are referred to.
Patent GB-852147-A (GB)
Title: Method of and device for feeding the tool in machine tools
IPC: H05B3/14
Filed: 1958-11-19
Abstract: 852,147. Electric heating. FORTUNAWERKE SPEZIALMASCHINENFABRIK A.G. Nov. 19, 1958 [Nov. 20, 1957], No. 37208/58. Class 39(3). [Also in Groups XIII and XXIII] The tool of a machine tool, e.g. the grinding tool of a grinding machine, is fed by heating a feed member connected without play between the tool carriage and a base member. A slide 1 carrying a grinding tool is mounted by roller guide 2 on a base member 3. Brackets 4, 6 secured to the parts 1, 3 are connected by bolts 5, 7 to brackets 9, 10 secured to the ends of an expansion member 8 which contains a ceramic heating rod 13 or alternatively a ceramic carrier with an electric heating coil fed with electricity through leads 16, 17. The member 8 is surrounded by a jacket 19 through which coolant is passed under the control of a valve 24. Coolant is also passed through the bases of the brackets 4, 6 to prevent transfer of heat to the parts 1, 3.
Patent GB-850279-A (GB)
Title: Improvements in the production of cellular or honeycomb metal structures
Inventor: KIRK GEOFFREY PETER
IPC: B21D47/00
Filed: 1956-12-05
Abstract: 850,279. Making grids; welding by pressure. BRITISH REFRASIL CO. Ltd. Dec. 4, 1957 [Dec. 5, 1956], No. 37226/56. Classes 83 (2) and 83 (4). A honeycomb structure, e.g. forming the core of rigid constructional panels, is formed by superimposing thin corrugated strips or sheets of metal such as stainless steel and joining the contacting parts by resistance welding. A resistance welding apparatus consists of a number of parallel bars of a metal of good conductivity but different from the metal of the structure spaced at intervals corresponding to the corrugations and connected to constitute one electrode and one or more seam welding tools forming the other electrode and movable along and adjacent the bars. Facing sheets may be brazed to each side of the structure.
Patent GB-1047782-A (GB)
Title: Mineral mining machines
Inventor: WRATHALL ROBERT WILLIAM
IPC: E21C35/10
Filed: 1962-10-02
Abstract: 1,047,782. Mineral mining machines. COAL INDUSTRY (PATENTS) Ltd. Oct. 2, 1963 [Oct. 2, 1962], No. 37316/62. Heading E1F. The cutting horizon of a mineral-mining machine is controlled by a fluid operated jack that is able to tilt the body of the machine as required in obedience to signals from a member resiliently urged upwards into contact with the roof of the mineral seam being mined. The member is a spring-loaded plunger, movement of which gives rise to an electrical signal controlling solenoid-actuated valves of the hydraulic circuit of the jack.
Patent GB-926222-A (GB)
Title: A trailer vehicle adapted for camping purposes
IPC: B60P3/34
Filed: 1959-11-04
Abstract: 926,222. Collapsible caravans. C. H. PERKINS. Nov. 4, 1960 [Nov. 4, 1959; May 19, 1960], Nos. 37351/59 and 17623/60. Class 108(1). A caravan which may be partially or wholly collapsed for towing, comprises a base, I shaped side members 12 hinged along the sides of the base and provided with integral end panels 15, horizontally extendable support members 16 rectangular frames 25 hinged to the top edge of each member 12, and a canvas cover forming the roof which may be laid over the frames and secured to studs 29 on the sides by rubber rings 28. In the wholly collapsed position the frames 25 are pivoted down to be contained within the members 12 which lie as shown in Fig 6, but in the partially collapsed position the frames are pivoted down and supported by the base to hold the members 12 as shown on the right of Fig. 7, and a weatherproof strip is secured over the ridge. End walls with windows and doors, and collapsible frame members 30 may be provided. The side members 12 in their fully collapsed position may have offset lower edges, Fig. 4 (not shown) which overlap adjacent members to form weather seals.
Patent GB-302664-A (GB)
IPC: B22C5/04
Filed: 1928-12-18
Abstract: 302,664. Lentz, A. Dec. 19, 1927, [Convention date]. Rotary mixers.-A mixing and grinding device for foundry sand comprises a rotary drum a of cylindrical or conical form and a mixing or grinding member b consisting of one or more helical bars the envelope of which is cylindrical or conical, and which are carried on a shaft c mounted in bearings supported so as to rise and fall freely. The sand is continuously fed, and one or both ends of the drum is provided with an enlargement d forming a mixing chamber. The sand is fed to the drum by a fixed plough e.
Patent GB-1117263-A (GB)
Title: Automatic time base rate circuit
IPC: G01R13/32
Filed: 1966-08-22
Abstract: 1,117,263. Semi-conductor sawtooth generating circuits. TEKTRONIX Inc. 22 Aug., 1966 [20 Aug., 1965], No. 37578/66. Heading H3T. In a time base circuit, particularly for an oscilloscope, a time base is triggered by a predetermined portion of one repetition of an input waveform, a test pulse is generated having a width less than that of said time base, the rate and duration of said time base being automatically adjusted in dependence on whether or not said predetermined portion of a subsequent repetition of said waveform occurs during said test pulse. As shown, Y-deflection signals 12 are fed to a probe 56 connected to vertical amplifiers 53, 54. An output from 54 is amplified at 62 and feeds a tunnel diode bistable circuit 68 which produces a trigger pulse 18 at a predetermined portion of each repetition of the Y-deflection waveform. An integrator 70 provides AGC for amplifier 62. A sweep gate pulse 22 is initiated by one of pulses 18 and determines the time during which a sweep generator 24a produces a time base. The sweep generator 24a comprises an amplifier 74 having Miller feedback via one of capacitors 76, selected by OR gates A . . . D and charged via resistors 80, selected by OR gates 1 . . . 3. Further triggering of the sweep gating circuit 20 is prevented by a hold-off circuit 24b which provides triangular pulses having duration, adjustable by selection of capacitors 90, rather greater than that of each sweep. A test pulse is initiated at 32 by each sweep and has a duration half that of the sweep. An AND gate 36 provides an indication whether or not further trigger pulses 18 occur during any one sweep; if so, a pulse 38 triggers a monostable multivibrator 103 which steps a ring counter 106 to its next setting, thereby pulsing an appropriate one of OR gates 81 so as to select a more appropriate value of resistor 80. Such operations continue, if necessary, until ring counter 106 has been stepped over its full range, when a pulse is fed to counter 108 which actuates the appropriate one of OR gates 78, 92 so as to select a more appropriate capacitor 76, 90. This sequence continues until no trigger pulses are coincident with the test pulses 34, when two cycles of the input signal 12 will be displayed on the cathoderay tube 14. The sweep rate then in operation will be indicated at 112. The automatic sweep gate selection may be initiated by operation of push-button 58. The OR gates may utilize reed relays, diodes or transistors. The sweep generator may be reset to its lowest rate, pulses from counters 106, 108 being arranged to increase the rate; alternatively, the adjustment may be made in the reverse direction or to alternate between increasing and decreasing rates.
Patent GB-866351-A (GB)
Title: Improvements in and relating to tape recording and reproducing apparatus
Inventor: LANE NORMAN
IPC: G11B15/50
Filed: 1958-11-21
Abstract: 866,351. Magnetic tape recording. BIRMINGHAM SOUND REPRODUCERS Ltd. Oct. 23, 1959 [Nov. 21, 1958], No. 37618/58. Class 40 (2). In a tape recorder, supply and take-up spools 25, 26 are each mounted in a movable bearing 21, 22 so as to be movable into and out of engagement with a respective one of a pair of pulleys 5, 16 rotatable by the motor in opposite directions, the movable bearings being controlled by a bar 30 coupled with lost-motion thereto, and biased by a pair of springs 35, 36 urging each towards a related pulley. The arrangement is such that in either of two terminal positions of the bar one of the spool carriers is held in yielding pressure engagement with one of the pulleys for rapid forward or reverse drive, and in the intermediate position both pulleys are free. Knob 40 which actuates bar 30 through link 37 controls the application of pressure-roller 46 to the tape on capstan spindle 11, the application of a pressure-pad pressing the tape against the head, and a pair of brakes 60, 61 interconnected by links 51, 52 and a tension-rod 62. With the movement of one wheel away from its brake shoe during fastrunning application of the other brake to the other spool provides tensioning. The arrangement of a resilient pulley 5 and a metal pulley 6 on the motor shaft is described with reference to Fig. 6 (not shown), the latter driving intermediate reversing pulley 16 when the two are brought into engagement by movement of the spool bearing 22. An erase switch 77 which is normally urged into the non-erase position by a spring 78 is arranged to be latched by a tooth 80 on the end of plate 44 carrying the pressureroller assembly, when the latter is moved forward into the " record " position. A toggle spring 49 gives the plate 44 a snap-action.
Patent GB-1177505-A (GB)
Title: An Improved Ventilator for Cavity Walls.
Inventor: SMITH JOHN HENRY
IPC: F24F7/00
Filed: 1966-08-23
Abstract: 1,177,505. Ventilators. J. H. SMITH. 17 March, 1967 [23 Aug., 1966], No. 37651/66. Heading F4V. A ventilator comprises first and second plastics tubes 1, 10 mounted in a cavity wall opening and seated respectively against the outer and inner surfaces of the wall and forming a sliding fit one within the other, and a butterfly valve 16 within the tube 10 and controlled by cords 15 which emerge into the space to be ventilated. The tubes 1, 10 are bolted together, or alternatively the tube 10 is a tight sliding fit within the tube 1. The cords 15 pass through a central opening 13 in a grid or set of louvres 12, rotatable within the tube 10. The louvres may be individually adjustable. A perforated fly screen 6 made of zinc plastics, or wire mesh is provided. A packing ring 7 of foam plastics or foam rubber is provided between a flange 4 and the outer wall surface. One or both of the tubes are provided with a peripheral rib or a slidable plastics ring 11 which acts as a drip enforcer within the wall cavity.
Patent GB-1097384-A (GB)
Title: Process for producing finely divided metals
IPC: B22F9/24
Filed: 1965-09-03
Abstract: Powdered Group IB-VIIB, IVA, VA or VIII metal or a compound thereof is produced by adding a reducing agent to a solution comprising a salt of the metal and a soluble aluminium compound, the reducing agent simultaneously reducing the metal salt to the lower valence state or to the metal and precipitating aluminium hydroxide. The reducing agent is one that generates either an acid or a base and may be formaldehyde, hydrazine, hydroxylamine, methanol, acetaldehyde, hydroquinone, isopropanol, formic acid and diborane.  Preferred aluminium compounds are the alkali metal aluminates.  The aluminium hydroxide by-product may be removed from the precipitate by treatment with an acid or base. Alternatively, after the addition of aluminate the solution is titrated with acid until aluminium hydroxide starts to percipitate so that acid formed in the reduction step causes further precipitation of the aluminium hydroxide.  The metal-aluminium hydroxide co-precipitate is dried, calcined and formed into electrodes.  The production of powdered Pt., Pd and Pt-Ru is specifically referred to.
Patent GB-1005673-A (GB)
Title: Improvements in electrical insulating bushing
IPC: H02G15/06
Filed: 1962-10-05
Abstract: 1,005,673. Insulating bushing. GENERAL ELECTRIC CO. Oct. 5, 1962 [Oct. 9, 1961], No. 37776/62. Heading H2C. A liquid filled bushing insulator for a central conductor 125 which is insulated with Kraft paper 140 comprises a window 119, for displaying the liquid level within the bushing, mounted between opaque porcelain shells 122, 121, the upper shell having flange means 123 that prevents moisture from contaminating the exterior surface of the window. With this arrangement window 119 can be included in the length of insulating material necessary to prevent wet creepage failure or flashover between point 37 on the bushing at line potential and flange 11 which is at ground potential, whereby the size of the bushing is minimized. The insulator may be of sloping type.
Patent GB-378245-A (GB)
Abstract: 378,245. Colour photography. KELLER - DORIAN COLORFILM CORPORATION, 522, 5th Avenue, New York, U.S.A. Sept. 29, 1931, No. 27154. Convention date, Nov. 28, 1930. [Classes 97 (i) and 98 (ii).] Apparatus for copying lenticular films comprises an objective provided with a diaphragm, and a parallel-faced transparent plate inclined to and rotated about the axis of the objective. As shown, the lenticular film 1 illuminated by the lamp 29 and the condenser 30 is copied by the objective 3 comprising symmetric systems 5, 6 each with a biconvex lens 13 and a doublet comprising a biconvex lens 15 and a plano-convex lens 17, on to a lenticular film 2. Between the lens Systems is a diaphragm 19, while between the lens system 6 and the film 2 is the inclined glass plate 20, adjustably supported by means of the springs 22, 23 and the screw 24 in the gear ring 24a, supported in ball bearings 25 and rotated by a gear 27 on the shaft 28 which rotates the shutter 31 through gears 32b, 32a. The shutter 31 comprises two relatively adjustable segments 31a, 31b.
Patent GB-351422-A (GB)
Title: A system of blocks and slabs for building operations
IPC: E04C1/40
Filed: 1929-12-11
Abstract: 351,422. Composite blocks or slabs. BOURDELLES, L., 39, Rue Galilee, Paris. Dec. 11, 1929, No. 38044. Convention date, Dec. 12, 1928. Void [Published under Sect. 91 of the Acts]. [Class 87 (i).] A slab is made with a core of cellular plaster or concrete, which may receive one or more layers of reinforcement. The facing layers on one or both sides of the core may be of ordinary plaster, silicated plaster or stucco, ordinary or magnesium cement, or cement concrete or mortar, and may differ on the two sides. Powdered metal with an alkaline nitrate or base may also be used in the composition of the facing layers. As one example of manufacture, a facing layer 3 and a reinforcement 5, which may comprise bars, a grid or expanded metal, are placed in a mould and a slightly acidulated mixture 1 of plaster and water added. After the gaseous bubbles evolved have formed the cells in the plaster, the second layer 4 of reinforcement is applied and the other facing layer 2 run in. A small quantity of vegetable or animal albumen may be added to the acidulated water. The reinforcements may be coated with cement or fibrous woven material.
Patent GB-1482073-A (GB)
Title: Titanium alloys
IPC: C22F1/18
Filed: 1974-09-27
Abstract: 1482073 Hot working titanium alloy DEFENCE SECRETARY OF STATE FOR 27 Sept 1974 [10 Aug 1973] 38114/73 Heading C7A [Also in Division B3] A method of working a high strength titanium alloy which includes subjecting the alloy to an 8:1 reduction at 650 to 700‹C followed by annealing at 700‹C to produce a microstructure of a fine grained α phase material having a grain size less than 10 microns including substantially spheroidal # phase material. The alloy may be a Ti-6Al-4V alloy which may be roll bonded, explosive bonded or diffusion bonded at 700‹C as thin sheets or cylindrical inserts to other titanium alloys to provide regions of high fatigue strength.
Patent GB-1467367-A (GB)
Title: Electric power cables
IPC: H01B7/28
Filed: 1975-09-02
Abstract: 1467367 Electric cables R COOPER D W AUKLAND and E H REYNOLDS 2 Sept 1975 [2 Sept 1974 11 Aug 1975] 38311/74 Heading H1A High voltage cables with polymeric insulation comprise a barrier that is water permeable but substantially impermeable to ionic substances. The barrier may comprise a polymeric carrier loaded with a cation-exchange material in its acid form and an anion-exchange material in its basic form, both materials in a finely divided state, examples being polystyrene resins with sulphonic acid or quaternary ammonium substituents respectively. Alternatively the barrier may comprise at least one ion-permeable membrane having water passages in which are immobile charged groups. The barrier may act as a dielectric screen, or protective sheath or in conjunction with such members and a light metal sheath may be provided as a first-line water defence. It is also noted that the polymeric insulation of the cable should be free of any additives that may make water penetrating thereto conductive.
Patent GB-985460-A (GB)
Title: Semi-conductor point contact devices
IPC: H01L29/00
Filed: 1962-10-10
Abstract: 985,460. Semi-conductor devices. MICROWAVE ASSOCIATES Inc. Oct. 10, 1962 [Nov. 2, 1961], No. 38417/62. Heading H1K. A point contact semi-conductor device has a layer 11 of deposited material which has a resistivity at least ten times greater than that of the substrate extrinsic semi-conductor material 10. The point contact 12 may be welded or bonded to the layer and may comprise a coating of doping material so that a PN junction is produced under the point contact. In one example the substrate consists of 0.0006 ohm cm. borondoped P-type silicon with an expitaxially deposited layer 0.5 15 1.5 microns thick and a tungsten whisker. Germanium, gallium arsenide or other semi-conductor material may be used. The layer may consist of intrinsic material and then a PIN diode may be produced. The invention provides low capacity with low series resistance and is especially applicable to variable capacity diodes or diode mixers.