baber/WOPTO huggingface dataset:
Patent GB-1220535-A (GB)
Title: Improvements in or relating to variable speed drive units
Inventor: GAY DARIO
IPC: F16H3/44
Filed: 1969-05-28
Abstract: 1,220,535. Motor driving arrangements. EDILMAC S.p.A. 28 May, 1969, No. 27015/69. Heading H2A. A variable speed drive, e.g. for a windlass, comprises a pair of electric motors driving gearwheels 9, 11 respectively, each of which wheels meshes with one of a pair of crown wheels 2, 3 of a differential having planets 4, 5 carried by a support coupled to the output shaft 6. The gear-wheels 9, 11 have different numbers of teeth and the crown wheels may have the same or different numbers of teeth, so that by energizing either one of the motors or both motors in the same or opposite directions at the same or different speeds, various output speeds are obtained. Under the conditions when one of the crown wheels is stationary, it may be locked by a brake, or the motors may be of the selfbraking type.
Patent GB-1351798-A (GB)
Title: Velocity modulation microwave tube
IPC: H01J25/12
Filed: 1971-04-19
Abstract: 1351798 Velocity-modulated tubes VARIAN ASSOCIATES 19 April 1971 [15 April 1970] 27089/71 Addition to 1208700 Heading H1D The embodiment of Fig. 3 of the parent Specification 1,208,700 which employs as the prebuncher section a pair of second harmonic resonators arranged in sequence between the input cavity and the final buncher section-is modified, to improve bunching, by the interposition of a fundamental frequency resonator between the two second harmonic resonators.
Patent GB-646192-A (GB)
Title: Improvements in and relating to electric lighting systems for vehicles
IPC: B60R16/02
Filed: 1948-10-19
Abstract: 646,192. Supply systems for vehicle lighting. BRITISH THOMSON-HOUSTON CO., Ltd., GRIFFITHS, L., and FARDON, G. E. Oct. 19, 1948, No. 27152. Addition to 602,773. [Class 38 (iv)] To prevent overload of the rectifier in event of the head-lamp circuit being opened, in a vehicle lighting system according to the parent Specification in which an alternator G directly supplies the head-lamp H (or its substitute resistor R) and works in conjunction with a rectifier 3 and battery 4 to supply the tail and dim lamps, the connection between the rectifier and alternator includes a thermal switch having normally-open contacts 2 which close only when an associated heater 1 in the head-lamp circuit is carrying current. The heater may also serve as a current-limiting choke or resistor for the head-lamps to allow a higher alternator voltage for battery charging. The heater may comprise a bimetallic helix, fixed at one end, whilst the other carries the movable contact of the pair 2, the second contact being fixed.
Patent GB-1510678-A (GB)
Title: Electrodes for fuel cells
IPC: H01M8/24
Filed: 1975-06-27
Abstract: 1510678 Electrodes for fuel cells INSTITUT FRANCAIS DU PETROLE 27 June 1975 [4 July 1974] 27338/75 Heading H1B A fuel cell comprises a block of stacked electrodes, defining channels for circulation of an electrolyte (e.g. KOH), a fuel gas (e.g. H2) and a combustion sustaining gas (e.g. air). The electrodes are microporous and have flatfloored recesses to form channels between opposed electrodes. The end portions l of each pair of electrodes are spaced apart so that during sealing of the cell in a bath of solidifiable resin material (Fig. 6, not shown), the height of penetration of the material into the block by capillarity is kept small. The electrodes are spaced by thin sheets of felt 13, which are wet by the electrolyte, and gas-permeable insulating separators 14.
Patent GB-1507476-A (GB)
Title: Producing metallurgical coke
IPC: C10B57/04
Filed: 1975-06-27
Abstract: 1507476 Producing metallurgical coke CENTRE DE RECHERCHES METALLURGIQUES/CENTRUM VOOR RESEARCH IN DE METALLURGIE and SIDMAR SIDERURGIE MARITIME SA 27 June 1975 [27 June 1974] 27393/75 Heading C5E Metallurgical coke is produced by mixing fine coking coal with coal agglomerates and coking the mixture; the agglomerates are made from at least one fine non-coking coal containing 28-42% volatiles and having a free swelling index of 0-5. The agglomerates may also comprise a fine coking coal with caking properties and/or a binder such as pitch.
Patent GB-1531425-A (GB)
Title: Model railway points
IPC: A63H19/32
Filed: 1976-06-25
Abstract: 1531425 Toy railway points GRAFAR Ltd 25 June 1976 [27 June 1975] 27481/75 Heading A6S Toy railway points have inner running rails 3, 4 for their two branches and a frog 7 electrically insulated from these rails and from movable blades 5, 6, electrical switching means and connections being provided so that in one position of the blades, one blade, as shown the blade 6, connects the frog 7 via a conductor 10, contacts 13, the blade itself, and a jumper 9 to the inner fixed rail 3 of one branch while the other blade 5, which is connected via a jumper 8 to the inner rail 4 of the other branch, remains insulated. In the other position of the blades 5, 6, the contact 13 no longer makes connection, but instead the frog 7 is connected via the conductor 10, a contact 12, the blade 5, the jumper 8 to the inner rail 4 of the other branch, the blade 6 and the inner rail 3 of the first branch now being electrically isolated.
Patent GB-463661-A (GB)
Title: Improvements in or relating to the manufacture of sliding clasp fasteners
IPC: B21D53/50
Filed: 1935-10-04
Abstract: 463,661. Sliding clasp fastenings. LIGHTNING FASTENERS, Ltd. Oct. 4, 1936, No. 27482. Convention date, Oct. 9, 1934. [Class 44] A fitted stringer tape for a sliding-clasp fastener is made by folding the edge of a flexible tape around a cord or the like and then clamping the elements around the beaded edge so formed. A cord 6 passing through a guide eyelet 5 is enfolded by the edge of a tape 1 which is turned over by a guide plate 2 merging into a small-radius slit cylindrical portion 4. The tape is pulled through by the mechanism of the clamping machine. A wire, spring, or a rubber core may be used instead of the cord.
Patent GB-341065-A (GB)
Title: Improvements in or relating to spring mountings for omnibuses, trucks and the like
IPC: B60G5/03
Filed: 1929-09-10
Abstract: 341,065. Road vehicle spring suspension. KEMBLE, T. S., 5330, Pershing Avenue, St. Louis, Missouri, U.S.A. Sept. 10, 1929, No. 27553. [Class 108 (ii).] Relates to a spring suspension for a motor vehicle having a four-wheel drive (as by means of two pairs of electric motors 2, 3), of the type in which the twin axle structures are secured directly to the ends of longitudinal springs 12, the centres of which are connected, as by plates 15 and U-bolts 13, to trunnions 11, which project from-the ends of a cross-member 4 of the frame at a level lower than the centres of the wheels. According to the invention, the axles are connected at opposite points to the cross-member 4 by upper and lower links 5a, 5b forming a torque-resisting system, a portion of which is always under tension.
Patent GB-533115-A (GB)
Title: Improvements in apparatus for tempering glass sheets
IPC: C03B27/052
Filed: 1939-10-10
Abstract: 533,115. Tempering sheet glass. PILKING- TON BROS., Ltd. Oct. 10, 1939, No. 27603. Convention date, Oct. 14, 1938. [Class 56] Apparatus for tempering glass sheets comprise a furnace 9, Fig. 1, and a chilling- device 13 arranged one above the other in alignment, and conveyer belts 23, 24 for carrying the glass sheets through the furnace and the chilling-device. The chilling- device comprises a pair of headers provided with outlet nozzles 14 and mounted on eccentrics which are driven by a motor 18 to oscillate the headers in a vertical direction. The belts 23, 24, Fig. 3, consist of screens, the glass plates 43 being supported on the teeth 45 of serrated metal plates 44 secured at intervals to the belt 23. In a modification, the belts are composed of parallel wires. In use, the glass plates are inserted between the belts above the furnace, and a motor 39 moves the belts step-by-step to carry each sheet into the furnace and then from the furnace to the chilling-device. Finally, the tempered sheets are deposited on a conveyer 47.
Patent GB-1431825-A (GB)
Title: Multicharacter display device
IPC: H01J17/49
Filed: 1973-06-11
Abstract: 1431825 Discharge display apparatus RCA CORPORATION 11 June 1973 [14 June 1972] 27662/73 Heading H1D A display device comprises a plurality of electrode arrays supported by a substrate and connected to terminals arranged along one edge and on both sides of the substrate by conductors passing through holes in the substrate and conductive layers on the substrate. A gas discharge device comprises electrode arrays 22a ... 22h, each electrode having a phosphor coating, grids 14 mounted on pads 52, 54, and a cathode assembly 16 with a thermionic wire emitter 136 opposite each array. The substrate comprises two ceramic sheets 24, 26 each with a row of terminals on a projecting part 12a. Holes extend from adjacent the electrodes of the arrays, the terminals, pads 34 and from the mounting pad of a getter 18, through sheet 24 and are filled or coated with metal. Conductive strips on the under side of sheet 24 provide connections between corresponding electrodes of each array and between grid pads 54 and terminals on sheet 24. A set of similar metal coated or metal filled holes extend through sheet 26 and strip conductors extend from each hole to terminals on the bottom of the sheet whereby array electrodes are connected to these terminals. These strip conductors are covered with an insulating layer 156. In operation anode potential is applied to each grid sequentially whilst the others are negative with respect to the cathode and anode potential is applied to selected groups of electrodes of the arrays. Electrons bombard only selected electrodes under the switched on grid. Each array comprises a figure of eight with two additional vertical centre members and a decimal dot interconnected on the top face of plate 24 by a strip 51. The electrode arrays are of successive layers of Mo and Ni coated with ZnO : Zn phosphor. A perforated mask may be placed under the grid to more clearly delineate elements of the array. In a glow discharge device the phosphor layer and cathodes 16 are omitted and the grids may be of a shape corresponding to the arrays or a mask may be placed between the grids and arrays. The display devices are used in calculators, weighing scales and clocks with integrated circuits which may be on the substrate. In clocks electrodes forming the letters a.m., p.m. may be added.
Patent GB-1137625-A (GB)
Title: Separation of uranium and plutonium values
IPC: C22B60/04
Filed: 1966-06-21
Abstract: 1,137,625. Separation of plutonium. UNITED STATES ATOMIC ENERGY COMMISSION. 21 June, 1966 [8 Feb., 1966], No. 27667/66. Heading G6R. Plutonium is separated from uranium by treatment with a molten magnesium alloy in which Pu but not U dissolves, contacting the alloy with a molten salt containing magnesium chloride to form plutonium chloride which dissolves in the molten salt, and contacting the molten salt with zinc alloy containing 2-10% by weight of magnesium, so as to form a Pu-Zn intermetallic precipitate, from which Pn may be recovered by distilling off the Zn. Contact of the molten salt with the two alloys may take place simultaneously. A tantalum crucible may be used, or the process carried out in an atmosphere of argon or helium. The Mg alloy may contain Cu, Cd, or Zn and the salt may comprise a mixture of MgCl 2  with LiCl or with NaCl and KCl. In the treatment of irradiated nuclear fuel, noble metal and refractory metal fission products remain in the Mg alloy. Carbide fuel is oxidized or chlorinated before treatment.
Patent GB-241735-A (GB)
Title: Improvements in or relating to sanding apparatus for molding machines and the like
IPC: B22C15/24
Filed: 1924-11-19
Abstract: 241,735. Norton, C. L. Nov. 19, 1924. Sanding.-In moulding-machines wherein a charge of fictile material is dropped from a height into a mould supported by a stationary anvil, the mould is sanded just prior to the entry of the charge by means disposed to one side of the falling charge. The invention is shown applied to the machine described in Specification 224,760. The mould 84 receives a charge of material from a dumping hopper 5 and is sanded by a blast of sand from divergent nozzles 105 at the lower end of a receptacle 102, the sand being discharged by blasts of air or steam delivered through nozzles 106 by the operation of a valve 111 actuated through a rod 112 from the shaft 72. An inclined deflector plate 107 directs the sand into the mould. Specification 224,760 is disclaimed.
Patent GB-1187322-A (GB)
Title: Improvements in and relating to Godets
IPC: D02J1/22
Filed: 1967-06-15
Abstract: 1,187,322. Stretching filamentary materials. FARBWERKE HOECHST A.G. 15 June, 1967 [15 June, 1966], No. 27704/67. Heading B5B. [Also in Division F2] Filaments and films are stretched using a godet which comprises a cylinder rotatable about its own axis and a heating body situated at least partially within the rotatable cylinder, the space between the rotatable cylinder and the body being occupied by a fluid whose thermal conductivity is greater than that of air. Liquids, such as mineral oils and silicone oil, having a high viscosity and high resistance to heat are the preferred fluids. The fluid circulating in the space between the body and the cylinder may be the same as that used to heat the body. Advantageously the heating body remains stationary while the cylinder rotates. In a preferred embodiment (Fig. 2) a rotatable cylinder 5, driven by a shaft 4, contains a heating body 1 into which heating fluid is passed through an inlet 2 and escapes through an outlet 3 to be recycled. Some of the heating fluid enters the space 6 between the heating body and the cylinder by means of bore holes 9, and circulates around the space to a circular passage 10, in which it is thrown off by splash rings 11, and finally leaves the apparatus by a conduit 12.
Patent GB-646165-A (GB)
Title: Improvements in or relating to electroacoustic transducers
IPC: A63B71/14
Filed: 1947-10-16
Abstract: 646,165. Sound producing or receiving devices. WESTERN ELECTRIC CO., Inc. Oct. 16, 1947, No. 27762. Convention date, Oct. 19, 1946. [Class 40 (iv)] In an electro-acoustic transducer having a ring armature, of the type described in Specification 646,164, a smaller air gap is obtained by inclining the inner poleface 26 and the cooperating edge 27 of the annular armature with regard to the direction of motion of the diaphragm 18. Fig. 1 shows the inner edge of the inner polepiece chamfered, whilst Figs. 2 and 3 show the outer edge cut away to form a frusto-conical poleface 31. In the latter case the corresponding inclined armature face may be turned up or down.
Patent GB-413261-A (GB)
Title: Improvements in a process for the preparation of blocked ends or stiffeners for footwear
IPC: A43B23/08
Filed: 1932-10-06
Abstract: 413,261. Stiffeners for boots &c. HORN, R., 62, Pelayo, Barcelona, Spain. Oct. 6, 1932, No. 27846. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 25, 1932]. [Classes 17 (i) and 17 (ii).] Shoe-end stiffeners which are cut from sheet material impregnated with celluloid are softened, before insertion in a boot &c., by exposure to the vapour of a solvent. This may be done by enclosing them in an air-tight box containing vapour from the solvent. The box may have a partition with apertures at a height above the base on which the stiffeners are supported but separated from one another by wires or similar means. A quantity of the solvent insufficient to touch any part of the stiffeners is placed in the bottom of the box or in a chamber communicating with it.
Patent GB-786681-A (GB)
Title: Improvements in ingot or slab shears provided with devices for pushing off the wasteends
IPC: B23D17/04
Filed: 1955-09-30
Abstract: 786,681. Shearing. SCHLOEMANN AKT.- GES. Sept. 30, 1955 [Oct. 18, 1954], No. 27849/55. Class 83 (4). A bow shear for cutting the waste ends of rolled ingots and having a pivoted lower blade carrier 2, is provided with pneumatically or hydraulically-actuated push-rods 6 supported on the lower blade carrier 2 and serving to push the sheared waste ends into a collecting trough. The push-rods 6 are positioned on each side of the lower blade and are formed as cylinders in which slide pistons 8 rigidly connected to the lower blade carrier 2. Valves control the supply of fluid under pressure to either end of the cylinders and a further valve is automatically operated to prevent extension of the push-rods 6 during the cutting stroke.
Patent GB-1206866-A (GB)
Title: Phenazine derivatives
Inventor: PIETRA SILVIO
IPC: C07D241/46
Filed: 1968-06-12
Abstract: 1,206,866. Phenazine derivatives. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 29 April, 1969 [12 June, 1968], No. 27959/68. Heading C2C. [Also in Division A5] Novel phenazine derivatives of Formula I and II wherein X is halogen, n is 1, 2 or 3 and the dotted bonds α  and # represent alternative positions for a double bond, are prepared as follows: (a) for compounds of Formula I, by (i) dealkylating a compound of Formula III. wherein R is alkyl, by treatment with a base, or (ii) reducing a compound of Formula II; (b) for compounds of Formula II, by (i) oxidizing a compound of Formula I or III, or (ii) simultaneously oxidizing and halogenating a 1- alkoxyphenazine of Formula III in which n is 0, 1 or 2, preferably by the use of a mixture of a hydrohalic acid and an oxidizing agent in which the oxidizing agent is present in excess of that needed for halogenation alone. 1 - Alkoxy - halophenazines of Formula III are prepared by halogenating a 1-alkoxyphenazine of Formula III in which n is 0, 1 or 2. 1-Methoxy-2-chlorophenazine is also prepared by reacting 2-nitrophenazine with sodium hypochlorite and methanol.
Patent GB-358696-A (GB)
Title: Improvements in paper bags or sacks
IPC: B65D30/24
Filed: 1930-09-19
Abstract: 358,696. Multi-ply valve bags. JACKSON, H., Oakenclough Paper Mills, Garstang, Lancashire.. Sept. 19, 1930, No. 28001. Drawings to Specification. [Class 94 (ii).] The tubular blank for a multi-ply valve bag is provided with a valve extension extending half-way across the width of the tube, the arrangement reinforcing the-bag end adjacent the valve opening and avoiding any waste of material when the blanks are cut from the tubular web top to top and bottom to bottom alternately. If the bags are to be printed, the printing roller is enlarged and carries two impressions in reversed relationship.
Patent GB-171086-A (GB)
Title: Improvements in hairpins
IPC: A45D8/08
Filed: 1921-10-21
Abstract: 171,086. Dewey, E. B. Nov. 5, 1920, [Convention date]. Hair-pins.-A hair-pin has its legs formed with inwardly projecting bends such as 1<b>, 1<c>, 2<b>, Fig. 1, which alternate with one another and extend approximately half-way across the pin, the portions 4, 5 of the legs being straight below them with the ends curved inwardly as shown at 1<a>, 2a.
Patent GB-519824-A (GB)
Title: Improvements in pressure regulating devices
IPC: H01H35/26
Filed: 1938-09-26
Abstract: 519,824. Actuation of switches. ERNST, W. Sept. 26, 1938, No. 28035. Convention date, June 20. [Class 38 (v)] [Also in Group XXV] In a device for regulating the operating pressure of fluid-operated machines, by operating a switch when the pressure reaches a predetermined tonnage, fluid pressure acts from below on a plunger 45 which bears on a switch-operating member 25 movable against a spring 23 the tension which is adjustable by movement of a cap 16 relative to the member 25. In the form shown the cap 16 screws into the casing and carries an indicator which co-operates with a scale 28 on the member 25. A ball-bearing 22 is mounted as shown and screw 18 which presses against a soft metal member 19 prevents accidental rotation, of the cap 16 after setting. When a predetermined pressure is reached the members 45, 25 rise and an adjustable bolt 32 on an arm 30 on the member 25 engages the press-button 36 of a switch causing the latter to operate.
Patent GB-829178-A (GB)
Title: A filing or sawing guide for holding key blanks
IPC: B23D67/00
Filed: 1958-09-02
Abstract: 829,178. Filing &c. keys for locks. FORSTER, A. Sept. 10, 1958 [Sept. 2, 1958], No. 28122/58. Class 83 (3). A filing or sawing guide for duplicating keys S, comprises a bifurcated member A having a lug H with a file &c. guide-notch G. A carrier C, slidable between the limbs of member A, supports on its edge F a key-blank T, and on a step E the pattern-key S. The pattern and blank are located against an abutment K and secured by a clamp D. A micrometer-sleeve B, engaging the underside of carrier C, clamps the notches of pattern S against an edge on the underside of lug H, thus exposing in notch G the part of the blank to be removed. The surface of the notch is of hardened steel, tungsten-carbide &c. The depth and spacing of the notches may be measured on scales O, N, M, and used to cut further blanks without a pattern, a graduated wedge (Fig. 5, not shown) being used between the step E and lug H. A handle R on member A may be gripped in a vice.
Patent GB-880749-A (GB)
Title: Process for the copolymerisation of conjugated dienes
IPC: C08F236/04
Filed: 1960-08-15
Abstract: Copolymers of conjugated dienes with each other are made by contacting at least two dienes with a catalyst prepared by bringing together a component (A) comprising a product obtained by the reaction at a temperature below 150 DEG C. of a titanium tetrahalide and an aluminium trialkyl in a molar ratio of 1,67:1 to 5:1, and component (B), consisting substantially of an aluminium trialkyl, and in which the atomic ratio of titanium in component (A) to aluminium in component (B) is from 10:1 to 1:1. The preparation of component (A) is preferably effected in the presence of a hydrocarbon diluent. The polymerization is also preferably effected in a similar diluent, although the polymerization may be carried out in bulk.  Diluents mentioned are benzene and iso-octane.  The polymerization may be terminated by the addition of ethanol in which a stabilizer is dissolved, e.g. 2,21-methylene bis [4-methyl-6-tert.-butyl phenol]. Dienes exemplified are butadiene -1, 3, and isoprene.  Component (A) may be made by reacting titanium tetrachloride and aluminium triethyl and component (B) may be aluminium triethyl.  Specification 789,781 is referred to.