baber/WOPTO huggingface dataset:
Patent GB-1284645-A (GB)
Title: Then film device
Inventor: SLATER JOHN HENRY
IPC: H01L45/00
Filed: 1970-01-30
Abstract: 1284645 Junctionless switching elements WELWYN ELECTRIC Ltd 18 Jan 1971 [30 Jan 1970] 4683/70 Heading H1K A multiple junetionless solid-state switching device is made by the process which follows. A high-alumina ceramic substrate 1 is sensitized with a stannous solution and activated with a palladium solution to receive an electroless deposit of nickel-phosphorus or cobalt phosphorus. The deposit is polished smooth and the greater part selectively etched away to leave areas 7-10 The structure is then heated in oxygen air or other oxygen-containing atmosphere to convert the upper surface of each deposit to oxide wile leaving that part in contact with the substrate to form an electrode. A common evaporated aluminium top-surface electrode 6 is provided by masked deposition and gold is evaporated on to area 11 of the aluminium and on to areas 2, 3, 4, 5 at which the oxide has been removed by abrasion to expose the underlying alloy. Leads are attached to the gold areas by soldering. The unit is protected by epoxy lacquer. Materials for top-surface contacts include aluminium, gold and silver applied by evaporation or sputtering; flame spraying may be used; and conductive epoxy resin and fired-on conductive glazes are suitable. Ultrasonic welding may be used for lead attachment.
Patent GB-684292-A (GB)
Title: Improvements in or relating to optical aligning instruments
IPC: G02B23/10
Filed: 1951-02-27
Abstract: 684,292. Optical apparatus. KODAK, Ltd. Feb. 27, 1951. [March 7, 1950], No. 4720/51. Class 97 (i). An optical aligning instrument comprises an objective for forming an image of a test object, plane semi-transparent reflecting means in the focal plane of the objective orthogonal to the optical axis of the objective, whereby a second image is formed superimposed on and inverted relative to the first image, and means for viewing the superimposed images. The objective may be a lens or a concave spherical mirror, coincidence of the images indicating alignment of the optical axis with the centre of the object. As shown in Fig. 3,. a triplet objective 43 is mounted in a rim 42 screwing into a lens mount 41 which also carries semireflecting glass plates 48 in screw-threaded rings 49 which are adjusted to pass respectively through the front and rear focal planes of the objective. Two images are thereby formed, one by light which has passed through the objective and both plates and one by light which has passed the first plate and the objective, being reflected back through the objective by the second plate and reflected by the first plate to pass once more through the objective and then through the second plate. These images are observed by a microscope 51 adjustable for focusing. Rotatable wedges 60 permit small adjustments of the direction of the optical axis and sights 50 are provided to assist initial alignment of the instrument. Fig. 5 shows a concave spherical mirror 77 and a Schmidt correcting plate 76, or other correcting system, forming an image 78 of an axial object 75. A semi-transparent reflector 81 in the focal plane of the mirror reflects some of the light, forming this image, as indicated by the beam 82, 83, 84, 85 to form a second image 86 superposed on the image 78 but inverted relative thereto. These images are observed in a microscope 91 via a prism 90. To effect initial alignment of the instrument a low power telescope 88 is provided together with a prism 87, this acting as a viewfinder. Specification 682,369 is referred to.
Patent GB-589233-A (GB)
Title: Improvements in lubricating compositions
IPC: C10M145/12
Filed: 1944-03-14
Abstract: The viscosity index of a mineral lubricating oil is increased by blending therein an oil-soluble copolymer of an unsaturated ester and styrene or a substitution product of styrene.  The unsaturated ester is preferably formed from an unsaturated acid, for instance acrylic, crotonic, methacrylic, maleic, fumaric or cinnamic acid, and a higher alcohol such as octyl, dodecyl or octadecyl alcohol, though the ester may be formed from an unsaturated alcohol.  Suitable substituents in the styrene nucleus are alkyl, aralkyl, heterocyclic, alkoxy or halogen-containing groups.  In the examples, suitable copolymers are obtained (a) by emulsifying a mixture of styrene and octyl fumarate in laurylamine hydrochloride solution and polymerizing in the presence of potassium persulphate and carbon disulphide, (b) by emulsifying a mixture of p-methyl styrene and octyl cinnamate in laurylamine hydrochloride solution and polymerizing in the presence of potassium persulphate, (c) by polymerizing p-methyl styrene and octyl fumarate in the presence of benzoyl peroxide and (d) by polymerizing styrene and dodecyl maleate, cinnamate or methacrylate in the presence of benzoyl peroxide.  Specification 484,964 is referred to.ALSO:The viscosity index of a mineral lubricating oil is increased by blending therein an oil-soluble copolymer of an unsaturated ester and styrene or a substitution product of styrene. The unsaturated ester is preferably formed from an unsaturated acid, for instance acrylic, crotonic, methacrylic, maleic, fumaric or cinnamic acid, and a higher alcohol such as octyl, dodecyl or octadecyl alcohol, though the ester may be formed from an unsaturated alcohol.  Suitable substituents in the styrene nucleus are alkyl, aralkyl heterocyclic alkoxy or halogen-containing groups.  In the examples, suitable copolymers are obtained (a) by emulsifying a mixture of styrene and octyl fumarate in laurylamine hydrochloride solution and polymerizing in the presence of potassium persulphate and carbon disulphide; (b) by emulsifying a mixture of p-methyl styrene and octyl cinnamate in laurylamine hydrochloride solution and polymerizing in the presence of potassium persulphate; (c) by polymerizing p-methyl styrene and octyl fumarate in the presence of benzoyl peroxide and (d) by polymerizing styrene and dodecyl maleate, cinnamate or methacrylate in the presence of benzoyl peroxide.  The octyl esters of cinnamic and fumaric acids and the dodecyl esters of cinnamic and maleic esters may be prepared by heating the respective acids and alcohols in the presence of toluene and toluene sulphonic acid.  Dodecyl methacrylate may be prepared by ester interchange by heating together dodecyl alcohol and methyl methacrylate in presence of toluene sulphonic acid and hydroquinone.  Specification 484,964 is referred to.
Patent GB-965011-A (GB)
Title: Polymerization of acrylates, methacrylates and acrylonitriles and catalysts for same
Inventor: WATT WILLIAM RUSSELL
IPC: C08F20/62
Filed: 1962-02-07
Abstract: 965,011. Polyacrylates, polymethacrylates and polyacrylonitrile. FMC CORPORATION. Feb. 7, 1962, No. 4754/62. Heading C3P. An acrylate, methacrylate or acrylonitrile having the general formula: where R <SP>1</SP> is hydrogen or methyl and R<SP>2</SP> is CN or R<SP>3</SP> being an alkyl, cycloalkyl, aryl, arylalkyl, alkaryl or N,N-dialkyl amino alkyl, is polymerized to a high molecular weight polymer using a catalyst consisting of a mixture of an amide of lithium, sodium, potassium, rubidium or caesium and a compound having the general formula M(OR<SP>4</SP>)n where M is boron, aluminium, titanium or zirconium and R<SP>4</SP> is ethyl, propyl, isopropyl, n-butyl, sec-butyl, iso-butyl, amyl, 2-ethylhexyl, dodecyl, stearyl, cyclohexyl, phenyl, tolyl or phenyl ethyl, n being the valence of M. The polymer may be a homopolymer of any one of the above monomers or may be an interpolymer of any two or more of them. The catalyst is prepared by mixing the amide and the M(OR<SP>4</SP>)n compound together in a solvent such as toluene. Preferably from 2 to 7 mols of the amide are mixed with every mol of the oxide. The. polymerization is carried out at room temperature or lower. In Examples 1 to 5 and 7 to 10 the catalyst is a mixture of sodamide and tetraisopropylorthotitanate and the monomer is one of the following: methyl-, ethyl-, isobutyl- or secbutyl-methacrylate; methylacrylate or acrylonitrile. In Example 6 lithium amide is used. In Examples 11 to 15 the amide is sodamide, the monomer is methylmethacrylate and the oxide compound is tetrastearyl-, tetra-amyl- or tetracyclohexyl-orthotitanate; or aluminium isopropylate or triethylborate.
Patent GB-163135-A (GB)
Title: Improved gas and air tight joint for downtake flue of "lancashire" and "cornish" boilers and the like
IPC: F23M5/02
Filed: 1920-02-17
Abstract: 163,135. Mills, M. W., and Ramsbottom, E. Feb. 17, 1920. Flues, external.-A vertical metal plate a so suspended in each of the side walls of the downtake of a Cornish or like boiler as to contact with the boiler end plate and form a gas-tight joint therewith is suspended by two parallel pairs of links e arranged at an angle. The outer edge of the plate is formed to receive asbestos rope or like packing d. The plate slides in and out of a box b, which is fixed in the downtake wall, through a packed gland c. The cross bar f carrying the boxes is formed with a recess k<1> adapted to receive packing forming a gas-tight joint at the top of the downtake.
Patent GB-251572-A (GB)
Title: Improvements in or relating to vacuum electric tube devices
IPC: H01J17/26
Filed: 1924-12-31
Abstract: 251,572. Robinson, E. Y., and Metropolitan-Vickers Electrical Co., Ltd. Dec. 31, 1924. Low-pressure metallic-vapour apparatus.-In introducing vaporizable substances into the envelopes of discharge devices, applicable to the introduction of getters removing residual gases, and of substances such as caesium increasing the electron emission of tungsten and other cathodes, a hermetically sealed capsule containing the substance to be vaporized is inserted into the envelope or in an extension thereof, and, after exhaustion of the envelope, is heated independently of the envelope or its extension to cause the substance to penetrate the capsule and vaporize into the envelope. Capsules of caesium may be prepared by heating a mixture of calcium chloride and caesium in a bulb 21, Fig. 3, carrying a boro-silicate glass tube 20, the tube 20 being connected to a vacuum pump and occluded gases being removed 'by preliminary heat treatment. Caesium is condensed into the tube 20 which is sealed into capsules at 23 - - 25. A capsule may be inserted in a nickel tube 14 having its ends closed by pinching and held by a wire 13 in an extenison 10 of the envelope 7 of a valve with 2 or more electrodes. After simultaneous opening of the envelope and exhaustion thereof through a tube 8 fixed into the pinch 5 in connection with a blow hole 9, the electrodes are high-treated by high-frequency induction and the tube 14 is then heated by high-frequency induction to vaporize the ceasium into the envelope, the extension 10 being finally sealed off at 12 and removed. Alternatively the electrodes and the tube 14 may be heated after the envelope 7 has been, sealed off from the pump. The caesium in the capsule may be heated directly by high-frequency induction, the nickel tube being dispensed with. The capsule can be located at other places in the envelope, and may remain permanently in the envelope, for example, it may be attached to one of the electrode supports. The capsule may be heated in other ways, such as by a heating coil within the envelope and carrying electric current or by heat arising from heattreatment of an electrode, in which case it mav be secured to or supported from the anode. The Provisional Specification describes also the use of reaction mixtures of caesium chloride and calcium in the tube 14 to generate caesium.
Patent GB-700795-A (GB)
Title: Improvements relating to buckles for belts
Inventor: WOOD HERBERT HOWARD
IPC: A44B11/24
Filed: 1952-02-23
Abstract: 700,795. Buckles. WALKER, Ltd., T. Nov. 27, 1952 [Feb. 23, 1952], No. 4806/52. Class 43 In a buckle for waist belts, of the kind having a hinged or pivoted prong for engaging one or other of a series of spaced holes in the adjustable end of a belt, the prong being hook-shaped adjacent to its turning axis and extending first outwardly away from the buckle frame or body and then being bent back over said frame or body so as to extend longitudinally over the face of the adjustable end of the belt, as shown in Fig. 3, in a direction towards the free end so that the tension on the belt when in use tends to move the prong towards the free end, the prong 7 forms one arm of a two-armed lever pivoted at 6 at the forward or outer end of the buckle frame 1, the other arm of the lever being of forked or bifurcated form with spaced side arms 8 which move angularly with the prong until, with the prong in its closed position, they lie adjacent to opposite edges of the free or adjustable end of the belt to prevent displacement of that end in its own plane. The prong 7 is joined to the side arms 8 by transverse pivot or crank parts 10 mounted to turn in sleeves 6 provided on the buckle frame and located on the underside of the belt. In the example the prong 7 and the side arms are made from a single length of wire, and the side arms are of loop form and project rearwardly beyond the buckle frame or body as straight bars 8a to prevent parts on the rear face of the latter from coming in contact with the garment worn with the belt. Lugs 2 on the underside of the buckle frame 1 support the pivot of a lever grip device 3 which co-operates with the rear face of the frame to clamp the fixed end 4 of the belt.
Patent GB-799330-A (GB)
Title: Magnetic powder dispenser
IPC: B01F15/02
Filed: 1956-02-16
Abstract: 799,330. Mixing solids with gases in flow. UNION CARBIDE CORPORATION, [formerly UNION CARBIDE & CARBON CORPORATION]. Feb. 16, 1956 [Feb. 17, 1955], No. 4810/56. Class 86 [Also in Group XXII] In a powder dispenser in the form of a hopper 10 having a conical base 12 with a constricted outlet 14, for feeding comminuted welding composition having magnetic properties to an injector chamber 48 through which a stream of carrier gas flows at high velocity from an inlet 52 to an outlet 54, the powder is conveyed from the outlet 14 to said chamber 48 by a magnetic drum 34 which is rotatably mounted within an intermediate chamber 32 and has an associated wiper 42. The drum 34 may comprise a permanent magnet 70 enclosed in a circumferentially-split casing 72 of steel, and it is rotated through a shaft 60 by a chain 56 which is preferably also coupled to the electrode feed rolls of a welding head, not shown, to which the powder-laden gas is to be supplied, so that said drum and feed rolls rotate in unison; the shaft 60 is also fitted with a cam 62 having a co-operating hammer 64 adapted indirectly to vibrate hopper 10. The outlet 14 of the hopper is provided with a powder regulating tube 18 for adjusting the thickness of powder layer deposited on the magnetic drum, the upper end of said tube being in screw-threaded engagement with the top of the hopper and fitted with a hand knob 22 and its lower end having passages 26 constituting the outlet 14. Disposed around the outlet 14 is an electric coil 76 which, when energized, arrests the flow of powder therethrough. Specification 797,022 is referred to.
Patent GB-139601-A (GB)
Title: Improvements in brake mechanism for railway wagons and similar vehicles
IPC: B61H9/00
Filed: 1919-02-26
Abstract: 139,601. Oliver, W. H., and Oliver, C. Feb. 26, 1919. Blocks and shoes; hand-actuation; compensating for wear.-Brake blocks are mounted by means of links c, d on cambered leaf springs b<2> which are suspended by straight portions b<1> from the vehicle frame. Central links e embrace the leaf springs and, on each block, are connected by a pin e' encased in a roller e<2> which bears against the back of the spring, compressing it when the brake is applied. A pair of brake blocks are simultaneously applied to the wheels by the brake lever g and a pair of toggle-links f, provision being made for adjustment to compensate for wear by means of a pin f<1> passing through a curved slot g<2> on the brake lever and selected holes on the links f. The links c, d are connected to roll-eyes on the spring, and the upper link c is slotted for accommodation in movement of the block. Recoil of the springs restores the parts on release.
Patent GB-1240449-A (GB)
Title: Bread toasting machine
IPC: A47J37/08
Filed: 1970-02-02
Abstract: 1,240,449. Toaster. HEVAL INDUSTRIES (PTY) Ltd. 2 Feb., 1970 [7 March, 1969], No. 4885/70. Heading A4D. A toaster comprises a housing 1 containing heating elements 15 and a carriage 4 which is slidable into and out of the housing. Angle elements 7 attached to longitudinal supports 6 define the compartments 8 of the carriage in which the bread is supported in an upright position by support members 9 on wire L frames 10 suspended from link arms 11. A shaft 14b at each end of the carriage is attached at one end to an actuating rod 12 connected to the link arms 11 via cranks 13 and at the other end is eccentrically attached to a cylindrical member 14a, rotation of which by handle 14 pivots the support members 9 about the link arms 11 thus vertically discharging toast from the carriage. A stop bar at the side of each compartment prevents toast being dragged across by the support member 9 and allows it to be cleanly discharged. The carriage is approximately twice as long as the housing so that on the completion of toasting in half of the carriage, it is pushed along, on rollers 5, allowing the remainder of the compartments to enter the housing, and the toasted section to emerge from the other side to be discharged. The heating elements are located one on either side of each row of compartments 8.
Patent GB-1038209-A (GB)
Title: Improvements in or relating to treating surfaces
IPC: B63B59/08
Filed: 1965-02-05
Abstract: 1,038,209. Cleaning walls; paint-stripping apparatus. L. HOPE. Feb. 5, 1965, No. 5030/65. Heading A4F. [Also in Division B2] Apparatus for treating (coating, cleaning) surfaces of large area comprises a suspension means 14 adapted for mounting adjacent the surface and supported thereby, means such as fan 13 for producing a current of air away from the surface and having an air intake close thereto and means such as a rotary brush or paint roller apparatus 37 for treating the surface by positive contact therewith. The suspension means can be moved transversely on rails 19 and adjusted vertically by lines 25, 26 having ends fastened to spools 23, 24. A reinforcing pipe 30 connects the fan 13 with the suspension means and is pivoted to permit the fan &c. to be swung towards and away from the surface being treated. The treatment roller is mounted so as to be pivoted about an axis parallel to its own axis and also about an axis at right angles to the first and parallel to the surface.
Patent GB-1092591-A (GB)
Title: Submersible pumping apparatus
Inventor: SOWDEN WALTER HAROLD
IPC: F04D29/60
Filed: 1965-02-05
Abstract: 1,092,591. Centrifugal pumps. LEE, HOWL & CO. Ltd. Feb. 1, 1966 [Feb. 5, 1965], No. 5056/65. Heading F1C. A pump 16 is guidably lowered into a basin containing sewage to a position in which the pump outlet 18 is aligned with a fixed delivery pipe 14. Then means controllable from the top of the basin make a substantially liquid tight joint between the outlet 18 and pipe 14. In the embodiment shown the means comprises a snail cam 24 mounted on a rotatable guide 11 to move the pump horizontally and thereby form a compression joint between the outlet 18 and pipe 14. The cam may operate with a stirrup so that it can move the pump towards and away from the pipe 14. In alternative embodiments, the cam arrangement may be replaced by a system of levers or a screw, or the means may comprise a screw-threaded sleeve on the outlet 18 movable into engagement with the end of the pipe 14 to form a compression joint or an internally-threaded sleeve movable to engage complementary screw threads on the delivery pipe.
Patent GB-841121-A (GB)
Title: Mechanical actuators
IPC: F16H25/20
Filed: 1958-02-17
Abstract: 841,121. Screw - and - nut actuators. HOOVER, V. A. Feb. 17, 1958, No. 5115/58. Class 78 (3). The eye 224 of a motor-driven screw-and-nut actuator is adjustable axially relative to the non-rotatable screw 223 without altering their relative rotational positioning. The adjustment is effected by a rotatable nut 448 having opposite hand threaded portions 451, 452, of different pitch, engaging threads 454 on a sleeve 442, rigid with the screw 223, and threads 453 on an eye-carrying member 447 which is keyed to the sleeve 442 for sliding, but not rotational movement relative thereto. A member 455 is provided to lock the nut in its adjusted position.
Patent GB-1452975-A (GB)
Title: Grooved video disc
IPC: G11B3/72
Filed: 1974-02-05
Abstract: 1452975 Preparing disc record RCA CORPORATION 5 Feb 1974 [9 Feb 1973] 05192/74 Heading G5R A method of forming a grooved disc for subsequent use as a master in preparing video disc records comprises forming a groove of trapezoidal cross-section in the disc, filling the groove with a viscous fluid material and rotating the disc to throw off excess material whereby the remaining material at rest assumes in the groove a regular curved cross-section which matches the curvature of the tip of the playback stylus. The size of the trapezoidal groove is determined from the tip radius of the stylus, the required groove pitch and an experimentally derived thickness measurement of the fluid material coating. The disc is particularly for use in the video recording and playback system described in Specification 1,392,202 in which the viscous fluid is a photo resist material which when dried is exposed to a video signal modulated beam of a scanning electron microscope and the master is used to prepare records for capacitive playback of the video signal.
Patent GB-583493-A (GB)
Title: Improvements in and relating to electrical condensers
IPC: H01G4/28
Filed: 1944-05-21
Abstract: 583,493. Condensers. PHILIPS LAMPS, Ltd., and HOLMES, T. May 21, 1944, Nos. 5274 and 10567. [Class 37] The external silver &c. coating 3 of a tubular condenser is carried round one end of a tube 1 of titanium dioxide &c. to the inner surface thereof, as at 4, and connection to the coatings 2, 3 is made inside the tube by wires 7 secured by a conducting cement 8 sealing the ends of the tube. The connection is preferably made in accordance with Specification 566,492. The bore of the tube is closed by an insulating bridge separating the coatings, the bridge being either of a vitreous enamel or being formed integrally with the tube (Fig. 4, not shown). An external vitreous enamel coating 6 is applied and the ends of the condenser are protected by an insulating cement 9, e.g., a thermosetting phenol formaldehyde resin in methylated spirit solution, loaded with a filler such as calcspar or " Alundum " (Registered Trade Mark), or alternatively a thermoplastic resin such as polyvinyl chloride or coumarone similarly loaded. Specification 440,951 also is referred to.
Patent GB-537100-A (GB)
Title: Improvements in or relating to power operated winches
IPC: B66D5/00
Filed: 1940-03-21
Abstract: 537,100. Winches. A.C.E. MACHINERY Ltd., and JONES, H. R. March 21, 1940, No. 5292. [Class 78 (v)] A winch drum a mounted on eccentric bearings d is capable of being swung from contact with brake blocks c to powered friction driving rollers h and vice versa. Both brake blocks c and rollers h bear on the rims of drum flanges b, and the drum a is swung by a weighted lever i manually lifted by pulley blocks and tackle. A hand or pedal operated band brake m surrounds a track l on one side of the drum a so that the drum can be prevented from rotating under the pull of its load during its transit between brakes c and driving rollers h. Brake shoes may take the place of the band m.