baber/WOPTO huggingface dataset:
Patent GB-1130149-A (GB)
Title: Production of rare earth chalcogenide crystals and crystals so produced
IPC: C01F17/224
Filed: 1966-04-26
Abstract: 1,130,149. Rare earth oxide and chalcogenide crystals. INTERNATIONAL BUSINESS MACHINES CORP. 26 April, 1966 [30 Aug., 1965], No. 18129/66. Heading C1A. Crystals of rare earth oxides or chalcogenides are made by heating a mixture of the oxide or chalcogenide and the corresponding rare earth metal in a sealed metal crucible, e.g. of tungsten, rhenium or molybdenum, to between 1650 and 3000 C. for 2 to 3 hours, cooling to between 1450 and 2800 C. for 16 to 20 hours and then cooling to room temp. for 6 to 8 hours. The crucible is cut open and the pure metal chalcogenide crystal, which is just below a thin layer of metal is cut out. Below the crystal is a mixture of metal and metal chalcogenide. The process is preferably used for EuO, EuSe, SaO, SaSe, YbO and YbSe. In the preparation of europium oxide crystals the crucible preferably contains 25-75 molar per cent of the chalcogenide, the rest being metal and the top of the crucible is maintained at a temperature 200 C. below that of the base of the crucible. Sulphides and tellurides are specifically included in the term " chalcogenide ".
Patent GB-1183253-A (GB)
Title: A Process for Setting Precious Stones, and Jewellery Resulting from this Process
Inventor: FAVRE HENRI
IPC: A44C17/02
Filed: 1967-04-20
Abstract: 1,183,253. Setting gems. H. FAVRE. 20 April, 1967 [28 April, 1966; 4 Oct., 1966], No. 18136/67. Heading A3H. A process for setting precious stones comprises polishing a metal support, boring an opening having an inner peripheral shoulder, placing a stone in the opening on the shoulder, bending portions of the metal from the support over the outer periphery of the stone and mounting the support and stone in a piece of jewellery. The support is made from a cylindrical metal bar 37 the outer surfaces 38, 39 of which are machined and the inner surfaces 40, 41 and 42 are cut to provide a shouldered base, the bar being cut off at the surface 43. A setting tool cuts out and bends over claws on to a stone set in the base of the support or if the support is angular the tool bends over the corner portions on to the stone. The support may be mounted in a plate which is then mounted in a piece of jewellery.
Patent GB-1184599-A (GB)
Title: Cross-Linked Polyamides.
Inventor: THORP NORMAN
IPC: C08G69/48
Filed: 1967-04-20
Abstract: 1,184,599. Polyamides. RAYCHEM CORP. 20 April, 1967 [21 April, 1966], No. 18143/67. Heading C3R. [Also in Division F2] Cross-linked polyamides are prepared by contacting a shaped structure of a polyamide with a cross-linking agent which is a compound having two or more unconjugated carbon-tocarbon double bonds dispersed in a liquid diluent. Contact, e.g. for 0.1 to 2 hours is sufficient to distribute the cross-linking agent throughout the polyamide. Preferred crosslinking agents are triallyl cyanurate and methylene bisacrylamide; other examples are hexamethylene bis-maleimide, N,N-diallyl acrylamide, tetramethylene diacrylate, glycerol trimethacrylate, the tetra-allyl ether of pentaerythritol, triallyl phosphate, divinyl sebacate and trivinyl trimellitate. Cross-linking may be effected by heating, e.g. at 200-300‹ C. or by ionizing radiation, e.g. a dose of 0À1 to 75 megarads. The cross-linked article may be subjected to a deforming force at a temperature at least equal to its crystalline melting temperature and cooled while subject to this deforming force. This imparts the property of elastic memory as disclosed in Specification 990,235. Reference has been directed by the Comptroller to Specification 838,412.
Patent GB-698576-A (GB)
Title: Improvements in or relating to direct positive photographic emulsions
Inventor: KENDALL JOHN DAVID
IPC: G03C1/485
Filed: 1951-08-01
Abstract: 698,576. Direct positive photographic emulsions. ILFORD, Ltd. July 21, 1952 [Aug. 1, 1951], No. 18196/51. Class 98 (ii). A direct positive photographic element comprises a fogged gelatino silver chloride emulsion containing a desensitizing compound of the general formula wherein A is a quaternary cinnoline or quinazoline nucleus. The emulsion may be prefogged by light exposure, but preferably chemically, e.g. by the inclusion of formaldehyde and subsequent standing at an elevated temperature. In example 1, a silver chloride emulsion of pH 8 is treated with aqueous formaldehyde, and heated at 125‹ F for 20 minutes. The pH is lowered to 6 by the addition of citric acid, an ethanol solution of 4- (m nitrostyryl) - cinnoline metho - p - - toluenesulphonate is added, and the emulsion is coated on paper. In example 2, the pH of a silver chloride emulsion containing a small proportion of silver iodide is adjusted to 7.8 by the addition of borax, aqueous formaldehyde is added, and the emulsion is heated at 116‹ F. for 45 minutes. Aqueous hydroxylamine hydrochloride is added, changing the pH to 6.25, and then an ethanol solution of 4-(m-nitrostyryl)- quinazoline metho-p-toluenesulphonate. The emulsion may be coated on paper. The cinnoline compound of example 1 may be used in example 2, or may be replaced by the corresponding o- or p-nitrostyryl compounds or by other quaternary salts. Specification 667,206 is referred to.
Patent GB-152778-A (GB)
Title: Improvements in and relating to machines for use in the manufacture of boots and shoes
IPC: A43D43/06
Filed: 1919-07-22
Abstract: 152,778. Standard Rotary Machine Co., and Picken, A. M. July 22, 1919. Channel - opening; trimming. - A rough upper trimruer comprises a pair of rotarydisk cutters and a channel-opener secured to the spindle of one of the cutters. As shown, a pair of overlapping disk cutters I, J rotate with meshing spur-wheels i, j of diameters corresponding to those of the cutters, so that these have the same peripheral speed. The spur-wheel i is driven by a worm W. A channel-opener L, shaped approximately as a truncated cone. with its base edge rounded off, is screwed into the spindle of the cutter J, and has a slot to take a screwdriver so that it may be adjusted up or down to vary the distance from the bottom of the last at which the upper is trimmed. The rotating channel-opener L assists in feeding the work forward. According to the Provisional Specification, the overlapping cutters may be pressed together by a spring.
Patent GB-148285-A (GB)
Title: Improvements in printing machines for wood or other material and the like
IPC: B41F7/16
Filed: 1920-07-02
Abstract: 148,285. Chauvette, V. E. L. July 18, 1919, [Convention date]. Rotary offset machines; inking-apparatus. -- Wooden panels or the like are printed by means of a rotary lithographic offset machine, the printing-surface of which occupies about a third of the periphery of the printing-cylinder, the remainder of this cylinder being formed as an ink table to permit a strong inking of the forme. The panels are registered against stops on a reciprocating bed D which is formed with holes connected by a flexible tube Y to a vacuum chamber X so as to hold the panel securely to the bed during the printing operation. On the forward movement of the bed, it is printed by a rubber offset surface B on a cylinder C which is geared to the plate cylinder A. The cylinder A is fitted with a lithographic printing-plate P which occupies a. third of its periphery, and is acted on by damping-rollers M and inking-rollers E which receive ink from the table on the cylinder A. The cylinders A, C are driven by reduction gearing from a shaft driven by a pulley, and the cylinder C is fitted with two sets of sector gear-wheels which are each equal to a third of the circumference of the wheel C and are arranged in different planes. One set gears directly with the bed to move it forwards, and after these come out of action and the movement of the bed is damped by springs, the other set returns the bed to which they are geared by means of an intermediate gear-shaft. The bed then remains idle for a third of the revolution of shaft C to permit of delivery of the printed panel, and the feeding of another panel. The connexion of the holes in the bed D to the chamber X is automatically made and broken, and the printed panel is delivered down an inclined plane.
Patent GB-1503524-A (GB)
Title: Electric arc welding
IPC: H02K25/00
Filed: 1975-05-02
Abstract: 1503524 Welding by fusion ZENTRALINSTITUT FUR SCHWEISSTECHNIK DER DEUTSCHEN DEMOKRATISCHEN REPUBLIK 2 May 1975 [31 July 1974 3 Dec 1974 5 Dec 1974 11 Dec 1974] 18381/75 Heading B3R [Also in Division H5] An arc welding apparatus has a plurality of electromagnets which in use are energized successively to drive the arc along the weld line, initial energization being before the are is struck. The electromagnets are connected individually to a control unit 5 in which a motor-driven sliding contact connects a voltage source in turn to the leads 6 of the coils of the magnets. The electromagnets have sheet metal polepieces 8 extending from the cores 7 to positions adjacent the arc gap between electrode 2 and workpiece 1. The polepieces may be integral with the core and embedded in resin 9, Fig. 5, the embedding compound then also supporting the welding electrode 13. The weld line may be circular, rectangular or linear with appropriate arrangements of electromagnets. Auxiliary pieces 22, 23 are attached to the workpiece 20, Fig. 7, for rectilinear welds, respectively to receive the arc root on striking and to elongate and thus interrupt the arc on finishing the weld.
Patent GB-458572-A (GB)
Title: Process for the production of salts with a low water content or in the anhydrous condition
IPC: C01F5/40
Filed: 1936-07-02
Abstract: Aqueous melts of salts or concentrated solutions of salts other than magnesium sulphate, are wholly or partially dehydrated by atomizing the salt melts or solutions and treating them with superheated steam. Except that the temperature of the superheated steam may be allowed to fall to 120 DEG  C. during the dehydration, the process is carried out in the manner described in the parent Specification.  In examples: (1) Fused Glauber's salt at 110--120 DEG  C. is atomized through nozzles into a tower and treated with a counterflow of superheated steam entering at 400 DEG  C. and leaving at 150 DEG  C.; (2) Fused Epsom salt at 120 DEG  C. is similarly atomized and dehydrated with steam entering at 550 DEG  C. and leaving at 200 DEG C.; (3) When treating fused magnesium chloride hexahydrate the steam may be used at 250 DEG  C. and be cooled to 120 DEG  C.; (4) A hot concentrated solution of ferrous sulphate may be atomized at 110--120 DEG  C., and be treated with steam entering at 200 DEG  C. and leaving at 120 DEG  C.  The superheated steam may be used at atmospheric or higher or lower pressures as desired.
Patent GB-175224-A (GB)
Title: An improved device for holding the tops of the ribs of umbrellas and the like
IPC: A45B25/12
Filed: 1921-07-07
Abstract: 175,224. Holding, G. R., and Glockler, F. July 7, 1921. Holding closed.-A tip-cup for umbrellas &c. is formed of a strip of metal, Fig. 1, so coiled and fixed on the stick (as shown in Fig. 4) that the inner windings of the narrow part 1 of the strip are enclosed in the winding of the broad part 2. The tips 5 are released by pushing up the part 2 against the spring action of the coil as a whole. The upper edge of the part 2 may be turned over as shown.
Patent GB-1335015-A (GB)
Title: Rodenticidal composition
IPC: A01N25/02
Filed: 1972-04-20
Abstract: 1335015 Rodenticidal compositions LIPHA LYONNAISE INDUSTRIELLE PHARMACEUTIQUE 20 April 1972 [21 April 1971] 18469/72 Heading A5E A rodenticidal composition comprises, as an essential active ingredient, 2 - diphenyl - acetyl - 1,3 - indanedione, in association with an oil as a carrier therefor. A foodbait may also be present.
Patent GB-649620-A (GB)
Title: Improvements in or relating to pipes of the socket and spigot type
IPC: F16L13/11
Filed: 1948-07-09
Abstract: 649,620. Pipe joints. STANTON IRONWORKS, CO., Ltd., and CORNELIUS, F. B. July 9, 1948, No. 18482. [Class 99(i)] A sealed spigot-and-socket joint for unlined pipes g, f comprises a rubber &c. ring d disposed between the overlapping parts, means, such as a hole h, being provided for introducing grout or other liquid filling material into a space e bounded in part by the ring, and a keyed recess c being provided at the opposed ends of the spigot and socket to receive a sealing material, such as sand and cement, forming a sealing ring. The spigot may be slightly tapered at a. In a modification, Fig. 2, (not shown), the ring is positioned to the left of the hole and the mouth of the socket is sealed with grout &c. which is keyed in grooves on the spigot, a bag made of hessian reinforced by wires being wrapped around the spigot and socket to define the space to receive the :grout. In a second modification, Fig. 3 (not shown), the diameter of the end of the socket is reduced to form a ledge, and the hole h communicates with an external groove.
Patent GB-797012-A (GB)
Title: Plastic molding process and apparatus
Inventor: HENDRY JAMES WATSON
IPC: B29C45/00
Filed: 1955-06-27
Abstract: 797,012. Injection-moulding. TUBE TURNS PLASTICS, Inc. June 27, 1955, No. 18494/55. Class 87(2). A plasticizing device comprising a screw 17, Fig. 1, working in a heated chamber 15 brings plastic material having a critical and narrow effective working temperature range and a high mouldable viscosity, e.g., unplasticized P.V.C., to a fully plasticized mouldable condition just prior to its exit from the chamber. The screw rotates to deliver into the injection cylinder 13 a sufficient charge of such conditioned material to fill the mould cavity 53. The screw then stops and the injection ram 31 descends to force all of the charge out of the cylinder into the mould cavity. From the time when the charge has reached its fully plasticized mouldable condition to the time at which it enters the mould cavity it is maintained in that condition. The cylinder is heated at 48, and the ram may be heated. In the mould the material is hardened by heating or cooling. Transference of the whole of the charge from the cylinder to the mould is permitted by the fact that the lower end of the cylinder is not restricted. If material collects at the corners 46 it may be pushed out of the plasticizing chamber by reciprocating the screw by means of cylinder 25. Cylinder 13 may be circular or square in cross-section. Fig. 2 shows a modified apparatus for upward injection, a different screw being used. Fig. 4 shows a ram having a rounded end working in a similarlyshaped cylinder, and a mould having an " expansion chamber" 55 the bottom of which is formed by a yielding plunger 56 the resistance of which ensures complete filling of the mould cavity. The ram end may be not rounded but pointed (Figs. 5 and 7 (not shown)). Specifications 711,875 and 769,104 are referred to.
Patent GB-269768-A (GB)
Title: Improvements in vehicle side screens
IPC: B60J1/14
Filed: 1926-07-24
Abstract: 269,768. Barnes, F. J. July 24, 1926. Wind'screens.-A side screen for a motor or like vehicle comprises an outer substantially triangular frame of angle-section metal having a vertical rear edge A2 and a front edge A3 attached to and inclined at the same angle as the side members B2 of the front screen B, an inner metal or wooden frame A5 of similar shape fitted with a celluloid, glass or like panel and hinged to the outer frame along its front edge, a supporting member A9 extending downwardly from the outer frame for attachment to the vehicle body, and means for retaining the inner frame at any desired inclination to the outer frame. The retaining means may consist of a catch H on the inner frame having a member H2 engageable with a notch J on the lower edge A1 of the outer frame. Opening of the inner frame allows the interior of the car to be ventilated or the driver to extend his hand for signalling purposes, or, for the latter purpose, a hand N or like signalling device may be arranged on the screen panel or on a depending flap O movable with the screen. The rear edge A2 of the outer frame and the support A9 may be arranged either in line or, when it is desired that the outer frame should project a small distance over the door L to contact with the door window frame, the support A9 may be slightly in advance of the edge A2.
Patent GB-816850-A (GB)
Title: A workpiece guide and switch mechanism
Inventor: MAXIMILIAN OCTAVIAN
IPC: B21B39/18
Filed: 1957-06-07
Abstract: 816,850. Shearing. UNITED ENGINEERING & FOUNDRY CO. June 7, 1957, No. 18167/57. Class 83 (4). In a shears having a pair of rotary disc blades 22 in a vertical plane oblique to the path of feed of the moving stock and in which a movable guide 43 through which the stock passes is swung to direct the stock through the blades 22 to effect shearing, the end of the movable guide 43 nearest the blades 22 is maintained closely adjacent to the cutting edges of the blades 22. As shown in Fig. 1, two shears 21, 22 are mounted on a common bed 11, the lower discs 21, 22 of each shears being mounted on a common shaft 18. Tapered cups 17 keyed on to the tapered ends of shaft 18 are slidably keyed in the cupped ends of shafts 10, so that by rotation of nuts 23 threaded on the cups 17 the longitudinal position of the shaft 18 can be adjusted. A motor 28 is connected to one shaft 10. The shafts 10 are mounted in eccentric sleeves carrying gears 31. The upper blades are mounted and driven in the same manner, the gears 31 of the upper and lower shafts 10 being in mesh and rotatable manually to adjust the distance between the shafts 18. On the exit side of each shears is a fixed guide 41 divided by a partition 41a and having an oblique flared end 42 adjacent the blades. Each movable guide 43 has an oblique end adjacent the blades and is slidably carried on a fixed tubular guide 44. A sleeve 46 secured to each guide 43 is connected to a piston-rod 54 held by a latch 48. When the latch 48 is released, a spring 57 pre-compressed by a fluid-pressure cylinder 55, drives the piston-rod 54 and so the end of the guide 43 along a path parallel to the blades 22 and the stock is sheared, whilst moving at the speed of the blades, the first part of the stock having passed through the right-hand portion of the exit guide 41 and the second part being directed to the left-hand portion of the guide 41.
Patent GB-580467-A (GB)
Title: Improvements relating to polyphase alternating electric current generators of the electronic type
IPC: H03B5/22
Filed: 1944-09-29
Abstract: 580,467. Valve generating circuits. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and WALKER, A. H. B. Sept. 29, 1944, No. 18668. [Class 40 (v)] In a polyphase alternating current generator of the electronic type, comprising a thermionic valve for each phase, the anode of each valve is coupled to the grid of the valve of the next phase through a phase-shift network comprising an adjustable condenser and grid leak system of impedance high relative to that of anode circuit of previous valve. The grid bias of each valve is controlled by the polyphase output voltage of the generator applied to a set of rectifiers, so as to maintain the operation of the valves within a suitable portion of their characteristic curves. In the Figure, the anodes 1a, 1b, 1c of the pentodes A, B, C are connected through phaseshift networks 6 to the grids 7b, 7c, 7a of the succeeding valves. Each phase-shift network consists of blocks of condensers 7, 8 and resistances 14 so that by choice of switching 11, 12, 13 a wide range of frequencies is produced. The polyphase voltage generated at R, Y, B is applied to the three input terminals 17 of the set of bridge-connected rectifiers 16 to produce a biassing voltage proportional to the voltage generated. The anode of each valve is connected to the positive terminal of a source of unidirectional current through a resistance 2 and the cathode to the negative terminal of the same source through a resistance 4 thus providing negative feed-back. A backing-off voltage may be applied to the grids in addition to that derived from the rectifiers.
Patent GB-719426-A (GB)
Title: Improvements in convertible bed-settees
IPC: A47C17/18
Filed: 1952-07-23
Abstract: 719,426. Bed-settees. BENMAX, S. May 18, 1953 [July 23, 1952], No. 18672/52. Class 52 (2) In a chair-bed or bed-settee the arm rests 4 are hinged at 9 to the frame and are adapted to be turned down so as to present a surface which extends or prolongs the bed surface. The parts of the ;arm rests which in the settee position are at the ends of the seat are formed of less width than the remaining part of the arm rest. In order that the back may be of a width equal to that of the seat the parts - 6a of the arm rests are also of reduced width. Specification 695,050 is referred to.
Patent GB-748827-A (GB)
Title: Improvements relating to seals between the rotary and stationary parts of rotary machines
Inventor: BECKMANN PAUL
IPC: F04D29/16
Filed: 1953-07-06
Abstract: 748,827. Stuffing - box substitutes. MASCHINENEBAU-AKT.-GES. BALCKE. July 6, 1953 [April 24, 1953], No. 18696/53. Class 122(5) A seal between the rotary and stationary parts of machines, such as turbines, centrifugal pumps and compressors, comprises an annular sealing face extending at right angles to the rotational axis and an axially movable sealing ring 20, Fig. 1, which is urged towards the sealing face the ring 20 and a guide 9 having co-operating shoulders which restrict movement of the ring towards the face so that there is no contact between them after running in. Fig. 1 shows a two-stage centrifugal pump in which the ring 20 forms a seal with an annular face on the inlet ring 12, the ring 20 being free to move axially on driven pins 28 connecting it with the impeller 2. The pressure at the outlet of the impeller is communicated through chambers 21, 22 and a gap 24 or bores to an annular space 25 to displace the ring 20 towards the ring 12. Springs 27 or gravity, provide the sealing pressure during starting. The second impeller 3 is sealed in a similar manner against a ring 29 secured to the casing. A guide ring 7 shrunk fast on a spacer bush 4 also supports a sealing ring 31 co-operating with a stationary ring 30, the ring 31 being subjected to spring pressure and the pressure of the fluid being pumped. Shoulders 32 serve to limit the wear. A fourth seal comprises an axially movable sealing ring 42 bearing against a collar 8 on a spacer bush 5 separating the impeller 3 from a balancing disc 6. This sealing ring is connected by pins 28 with a ring 41 in screwthreaded engagement with a ring 40 carried by the casing and is therefore stationary. Modified constructions are described in which bore holes are provided in the shoulder ring 9 to transmit pressure to the annular space 25, the sealing ring is mounted on bolts the heads of which limit its axial movement, and in a turbine the co-operating sealing faces are formed in the manner of a labyrinth seal as shown in Fig. 4, the grooves 79, 80 and 81 permitting a high rate of wear during running-in.
Patent GB-1427389-A (GB)
Title: Oxidation process for the synthesis of maleic anhydride
IPC: C07C51/23
Filed: 1973-04-18
Abstract: 1427389 Maleic anhydride STANDARD OIL CO 18 April 1973 [5 May 1972] 18738/73 Heading C2C [Also in Division B1] Maleic anhydride is produced by oxidizing 1,3-butadiene, n-butenes, crotonaldehyde, furan or a mixture thereof with molecular oxygen at 250-600 C. using a catalyst comprising antimony, molybdenum, oxygen, vanadium and/or iron and, optionally, tungsten, magnesium, aluminium and/or nickel in the atomic proportions Sb a  Mo b  V c  Fed Z e  O x  wherein: Z=W, Mg, Al and/or Ni; a=1-9; b=1-10; c, d, e=0-1 but c + d is greater than zero; and x is a number to satisfy valency requirements. The reaction pressure is usually superatmospheric but may be atmospheric or subatmospheric with a contact time of 1 to 50 sees. The feed may contain diluents, e.g. steam, nitrogen and carbon oxides. An air to reactant ratio of 12 to 20=1 may be employed. The examples describe the use of butadiene as feed to give a maleic anhydride product containing some acrylic acid.