baber/WOPTO huggingface dataset:
Patent GB-1150838-A (GB)
Title: Improvements in or relating to Glasses
IPC: C03C3/074
Filed: 1967-07-13
Abstract: 1,150,838. Optical glass. ERNST LEITZ G.m.b.H. 13 July, 1967 [16 July, 1966], No. 32252/67. Heading C1M. An optical glass is melted from a mixture which, apart from compatible additions comprises, B 2 O 3  and SiO 2  42 to 52 mol per cent, the mol ratio of B 2 O 3  to SiO 2  being between 3À4 and 4À8; ZnO or CdO or both, and PbO, and La 2 O 3  36 to 46 mol per cent, the proportion of ZnO or CdO or both being between 12 and 22 mol per cent, the proportion of PbO being between 8 and 24 mol per cent, and the proportion of La 2 O 3  being between 2 and 10 mol per cent; at least three of the oxides MgO, CaO, BaO, SrO, Al 2 O 3 , TiO 2 , ZrO 2 , SnO 2 , Ta 2 O 5 , Nb 2 O 5 , and WO 3 , the oxides, if present, being within the following limits: MgO and CaO and SrO and BaO 0 to 5 mol per cent, Al 2 O 3  0 to 3 mol per cent, TiO 2  0 to 4 mol per cent, ZrO 2  0 to 7 mol per cent, SnO 2  0 to 2 mol per cent, Ta 2 O 5  or Nb 2 O 5 , or both together 0 to 2 mol per cent, WO 3  0 to 3 mol per cent. Small proportions of arsenic trioxide and antimony oxide may be added to improve the colour of the glass.
Patent GB-410473-A (GB)
Title: Improvements relating to trawling gear
IPC: A01K73/02
Filed: 1932-11-15
Abstract: 410,473. Trawling. DRYBURGH, D., 2., Bangholm Park, Leith, Edinburgh. Nov. 15, 1932, No. 32260. [Class 48.] A kite B for the headline of a trawl-net is carried by a bridle C, the ends of which are connected to danlenos D separated from the net wings. The kite B is cambered in a fore and aft direction and is connected to the head-line by ropes A and rope brackets H. There may be additional kite-carrying bridles. Specification 410,474 is referred to.
Patent GB-474115-A (GB)
Title: Improvements in and relating to electric cables
IPC: H01B11/00
Filed: 1936-11-26
Abstract: 474,115. Cables. FELTEN & GUILLEAUME CARLSWERK AKT.-GES. Nov. 26, 1936, No. 32425. Convention date, Dec. 18, 1935. Addition to 468,325. [Class 36] In an armoured concentric conductor cable with air-space insulation in which the outer conductor consists of metal bands helically wound over the air-space insulation in the same direction as the armouring wires or strips, as described in the parent Specification, the laying lengths of the metal bands and the armouring wires or strips are in the ratio of the diameters of the outer conductor and armouring to the power of 1À5 to 2. To prevent tendency to twist, the cable may be provided over the armouring with one or more layers of wires or bands applied in a direction opposite to the direction of lay of the armouring wires or strips.
Patent GB-537247-A (GB)
Title: Chemical heating pad
IPC: C09K5/16
Filed: 1939-12-19
Abstract: 537,247. Heating by chemical action. UNITED STATES APPLIANCE CORPORATION. Dec. 19, 1939, No. 32548. Convention date, Dec. 27, 1938. [Class 64 (ii)] A chemical heating pad suitable for permanent hair waving comprises an inner assembly consisting of alternate sheets of absorbent asbestos paper 10b and sheets 10c of aluminium foil as described in-Specification 536,038, a protective wrapper 11 consisting of a sheet 13 of thin aluminium foil having its inner surface covered by parchment 14, a sheet 16 of moisture proof "Cellophane" (Registered Trade Mark) and sheet 17 of an absorbent material such as paper towelling. Sheet 16 is capable of resisting penetration of the chemical solution which may consist of copper ammonium chloride and copper nitrate. The pad is folded up so as to leave free edges on the inside which may be opened so that a measured quantity of solution may be introduced by a syringe 26 as shown in Fig. 5. Specification 501,886 and U.S.A. Specification 1,737,187 are referred to.
Patent GB-137294-A (GB)
Title: Box and process of manufacture thereof
IPC: B65D6/16
Filed: 1919-12-29
Abstract: 137,294. Craig, E. April 24, 1916, [Convention date]. Knock-down boxes made from special blanks; bands, strengthening.-A box is formed from two end-pieces B, Figs. 2 and 5, and from a foldable blank A, Figs. 1 and 5, having its parts 1, 2, 3, 4 connected together by binding-wires 5, 6, 7, the parts 1, 3 being provided with cleats 8, 9 adapted to engage with cleats 12, 13 secured to opposite edges of the end-pieces B. The ends of the cleats 8, 9 are flush with the edges of the parts 1, 3, and the various portions are so arranged that, when the box is set up, the parts 2, 4 overlap the parts 1, 3. The cleats 8, 9, 12, 13 are formed with tongues and grooves, so that they interlock. When the box is required to be collapsible, it is secured in an erect and closed condition by merely twisting together the ends of the wires 5, 6, 7; but when the box is not required to be collapsible, the cleats 8, 9 are nailed or stapled to the ends B, and the cleats 12, 13 are nailed to the parts 4, 2.
Patent GB-944163-A (GB)
Title: Improvements in or relating to automatic telephone exchanges
Inventor: BRAY FREDERICK HARRY
IPC: H04J3/17
Filed: 1959-07-09
Abstract: 944,163. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. July 8, 1960 [July 9, 1959], No. 32642/62. Divided out of 944,162. Drawings to Specification. Heading H4K. The description is identical with that of Specification 944,162 but the claims are directed to the feature of providing a class-of service indicating circuit which in response to signals from the register provides the class indication for a calling line directly to the register. Specifications 734,345 and 794,812 also are referred to.
Patent GB-736821-A (GB)
Title: Process for preparing benzene dicarboxylic acids and the resulting acids
IPC: C07C51/265
Filed: 1952-12-24
Abstract: The invention comprises a process for the oxidation of liquid dialkylbenzenes to alkyl-benzoic acid by means of oxygen in liquid phase between 100 DEG  and 175 DEG  C., wherein the reaction is terminated before conversion exceeds 80 per cent, and the separated crude alkyl benzoic acid product is further oxidized in liquid phase with nitric acid to a benzene dicarboxylic acid.  In an example, a hydrocarbon mixture containing ethylbenzene, and m and p-xylene is oxidized in presence of a cobalt naphthenate catalyst with air to give m and p-toluic acids with acetophenone, the products are separated and the acids are further oxidized to iso- and terephthalic acids with aqueous nitric acid under varying conditions. Specifications 655,074 and 666,709 are referred to.
Patent GB-766395-A (GB)
Title: Improvements in or relating to a motion transmitting device and more particularly to a window lift assembly
IPC: E05F11/40
Filed: 1954-11-12
Abstract: 766,395. Yielding bearing supports. PRODUCTIVE INVENTIONS, Inc. Nov. 12, 1954 [Nov. 13, 1953], No. 32807/54. Class 12 (1). [Also in Groups X and XXIV] In a vehicle window-operating apparatus (see Group X), the lower end of each double threaded shaft, such as 3, is flexibly coupled, by means of a connection 19, to the upper end of a flexible driving cable such as 9. The connector 19, partially encased in a rubber tube 24 held in position by a spring clip 24, and extending through a hole in a support bracket 21, is rotatably mounted in a housing 20 bolted to the bracket 21, a pair of corresponding rings 26 being located within an internal groove in a bushing '25 accommodated in the housing 20. The rings 26, engaging one another, provide a race for ball-bearings 27 which ride in a circumferential groove 28 provided in the connector 19.
Patent GB-814390-A (GB)
Title: Improvements relating to high voltage accelerating tubes for charged particles
Inventor: PETRIE DOUGLAS PERCIVAL RAMSAY
IPC: H05H5/02
Filed: 1954-11-12
Abstract: 814,390. Heavy-ion-beam tubes. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 14, 1955 [Nov. 12, 1954], No. 32844/54. Class 39(1). The anode or anode plate of a high voltage positive ion accelerator, such as described in Specification 736,859 [Group XXXV], is protected by a shield plate of carbon, metallic beryllium, boron or lithium against electron bombardment. These electrons may be secondaries arising at the negative end of the tube or they may be deliberately fired along the tube as a focused beam in order to control and stabilise the working of the tube.
Patent GB-154199-A (GB)
Title: Improvements in and relating to electric lamps operating with a luminous discharge
IPC: H05B41/232
Filed: 1920-11-22
Abstract: 154,199. Pintsch Akt.-Ges., J. Nov. 21, 1919, [Convention date]. Vacuum tubes. - Lamps utilizing the light from the positive column and having electrodes a considerable distance apart are started by means of an external conducting coating connected to one electrode and extending from the neighbourhood of one electrode to that of the other. In the lamp shown in Fig. 1, the coating 4 is connected to the electrode 2 through an inductance 5 tuned to the capacity of the coating. The gas between the lower electrode 3 and the coating 4 is ionized by the displacement current on starting and thereupon sets up direct discharge between the two electrodes. A resistance 6 is connected in series with the lamp. In a U-shaped lamp, Fig. 4, suitable for alternating current, the coating consists of strips 4, 4<1> which may be connected to the electrodes 11, 11<1> respectively, or oppositely. The electrodes may consist of an alloy containing alkali metal. In modifications, the Tighting-tube may be helical and the coating may consist of wire gauze, or a coil, or of a conducting liquid which may contain a fluorescent substance such as fluorescein, quinine sulphate, uranium salts, or anthracene in suspension or solution. In the lamp shown in Fig. 5, the lighting tube 1 is surrounded by a vessel 12 containing a conducting liquid and is in communication with an outer bulb containing an electrode 3 in the form of a helix or a widemeshed net. The electrode 2 is connected by the liquid or otherwise to a leading-in wire passing through the stopper 13. An inductance 14 and tuning condenser 15 are connected in series with the lamp. Metal disintegrated from the electrodes may be deposited on the inside of the tube 1 owing to cooling by the surrounding liquid. Specification 7997/15 is referred to.
Patent GB-185685-A (GB)
Title: An improvement in gas producers
IPC: C10J3/64
Filed: 1921-12-08
Abstract: 185,685. Healy, J. Dec. 8, 1921. Producers.-The gases from a gas-producer are passed down a tube A and through a conduit B encircling the hot fire zone, issuing from the producer by a conduit C. These tubes or conduits act as retorts for gasifying the tarry matter in the gases so that there is no need to employ tarextractors. Depending tubes E dipping into a water seal act as dust-catchers. Cleaning-covers D are provided.
Patent GB-811598-A (GB)
Title: Improvements relating to set square-protractors
IPC: B43L7/12
Filed: 1956-10-29
Abstract: 811,598. Set square protractors. PORTE, A. P. R. Oct. 29, 1956 [Nov. 8, 1955], No. 32937/56. Class 97(3) A set square-protractor comprising a set square and a parallel edged rule pivoted together has a protuberant element formed on a connecting member attached to the rule and spaced a fixed distance therefrom, the protuberant element being engageable for pushing in either direction by a finger of the hand which holds the set square so that pivoting of the rule relative to the set square may be remotely effected by the finger. As shown, a set square 1 has pivoted to it at 3 a rule 2 carrying a connecting element in the form of a protractor segment 5 having at its end remote from the rule a flange 10 for finger engagement. A stud 7 allows clamping of the protractor, and a vernier scale is provided at 11. Specification 754,960 is referred to.
Patent GB-1527269-A (GB)
Title: Solvent extraction process
IPC: C10G1/04
Filed: 1976-08-07
Abstract: 1527269 Solvent extraction of bitumen oils from tar-sand ROHRTIL SA 2 Aug 1977 [7 Aug 1976 25 Jan 1977] 32989/76 and 02939/77 Heading C5E Bitumen oils are separated from tar-sand by a continuous solvent extraction process in which tarsand, water and a solvent of lesser density than, and substantially immiscible with water are supplied to a contactor which is substantially filled thereby, with a barrier layer being formed by the water phase between the solvent phase and solids of the tar-sand, and, during the passage of the tar-sand through the contactor, solids of the tar-sand are caused to be repeatedly passed through the solvent stream and back to the water so that bitumen oils are progressively dissolved in the solvent phase, a bitumen oils-containing solvent and a discard stream comprising water and sand, which is substantially free of bitumen oils and solvent, being removed from the contactor.
Patent GB-747647-A (GB)
Title: Devices for separating haulm, weeds and like matter from root crops
Inventor: HAWKINS JOHN CLEMENT
IPC: A01D33/02
Filed: 1953-11-27
Abstract: 747,647. Separating solid materials. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 16, 1954 [Nov. 27, 1953], No. 33068/53. Class 117. [Also in Group I] In a potato-harvesting machine of the kind described in Specification 716,568 [Group I], in which a rotating spider 18 conveys the potatoes &c. from a lifting share to the foot of a lifting conveyer 14 which delivers them to a sorting conveyer, the potato-deflecting member between the spider 18 and the conveyer 14 is a roller 24 pressed on to the spider by a spring 33. The angle between the axis of the roller and the direction of motion of the spider at the line of contact is 45 degrees to 60 degrees, and the haulm, weeds, &c., on the spider are nipped between it and the roller and pass through to be discharged to the ground by an oblique scraper. The inner end of the roller 24 is tapered to provide a lead-in for the haulm, weeds &c.
Patent GB-958597-A (GB)
Title: Improvements in or relating to electric signal generating apparatus
Inventor: EVANS JOHN FAWCETT OGILVIE
IPC: H02P5/50
Filed: 1961-09-15
Abstract: 958, 597. Automatic speed control systems. S. SMITH & SONS (ENGLAND) Ltd. Dec. 14, 1962 [Sept. 15, 1961], No. 33173/61. Drawings to Specification. Heading G3R. [Also in Division G4] The invention relates to synchronizing gas turbines in a multi-engined aircraft. The speed phase error signal is derived by generating a pair of quadrature speed signals for each engine i.e. the speed signals for No. 1 engine will be in the form A o  sin (# + ##)t, and A o  cos (w + ##)t, while the signals for No. 2 engine will be in the form A o  sin #t, and A o  cos wt. These signals are processed by multiplying, adding and differentiating to extract the error signal of variable sense and magnitude which actuates a reversible servomotor to control the fuel supply to No. 1 engine. The calculation of the error signal is illustrated in block diagram form by Fig. 1 (not shown). Calling the above speed signals from No. 1 and No. 2 engines, A, B and C, D, for brevity the process involves:- (i) Product signals AC, AD, BC, BD produced by chopper modulators 7.. 10 (ii) Outputs serially connected to produce sum and difference signals AC + BD and AD - BC. (iii) After filtering at 11,12 differentiated at 13, 14 to produce (AC + BD) dt and (AD - BC)dt (iv) Further product signals produced by choppers 15, 16:- AC + BD)dt x (AD - BC) and (AD - BC)dt x (AC + BD). These signals are added at 17 and the Specification shows that the result will be ##. Circuit details described with reference to Fig. 2 (not shown) show a three-phase tachometer generator 1, feeding Scott-connected transformers 30, 31 providing quadrature outputs at their centertapped secondaries 5s, 5c to the bases and emitter/ collector electrodes of a pair of symmetrical transistors 32 forming the chopper modulator. The output is differentiated by transformer 40 and applied to a further transistor-chopper. Specification 912,163 is referred to.
Patent GB-987198-A (GB)
Title: Production of cyclooctylamine
Inventor: SCHUSTER LUDWIG
Filed: 1963-08-22
Abstract: Cyclo octylamine is produced by reacting at 5-25 DEG  C cyclo-octene with HCN in presence of 75-98% aqueous sulphuric acid, these three reagents being in a molar ratio of 1:2-15: 1.5-2, there being constantly maintained in the reaction mixture at least 2 moles of HCN per mole cyclo-octene, and saponifying the N-cyclo-octylformamide formed.
Patent GB-203593-A (GB)
Title: Improvements in or relating to fuel pumps for internal combustion engines
IPC: F02D1/02
Filed: 1922-12-05
Abstract: 203,593. Romeyn, J. Dec. 5, 1922. Regulating delivery by opening suction valves.- In a fuel pump in which the delivery is regulated by opening the suction valve, the shaft n connecting the governor to the valve-gear is mounted in a fixed bearing p provided with a tubular lining t which is loose in the bearing and on the shaft, and is oscillated by a moving part of the pump.
Patent GB-1216446-A (GB)
Title: Cold separation of ethylene-methane mixtures
IPC: C07C7/09
Filed: 1969-07-01
Abstract: 1,216,446. Cold separation of gas mixtures. FLUOR CORP. Ltd. 1 July, 1969 [20 Feb., 1969], No. 33283/69. Heading F4P. Ethylene and higher hydrocarbons are separated from a gas mixture thereof with methane and more volatile gases, e.g. hydrogen by partly liquefying the compressed feed mixture in a heat exchanger 2, separating an ethylenerich liquid at 4 and passing it through a line 15 to a dimethanisor column 17 at an elevated pressure below 350 p.s.i. withdrawing gaseous effluent containing some ethylene at 23, compressing it at 24 to a pressure higher than the feed pressure, condensing the ethylene in an externally cooled refrigerator 26, separating the condensed ethylene at 28 and returning it through a line 29 to the head of column 17 for use as reflux and withdrawing product liquid ethylene and higher hydrocarbons through a line 31. Gaseous methane separated at 28 drives a turbine 33 coupled to the compressor 24 and the cold so produced assists an external refrigerant in a line 2a in cooling exchanger 2. Gas withdrawn from separator 4 is further cooled and in part condensed in an exchanger 6 and fed to a separator 8. The condensate which is largely methane is fed through a line 13 as supplementary feed to the column 17, whilst gaseous hydrogen withdrawn from separator 8 is passed through exchanger 6, 2 to a discharge line 11.
Patent GB-483858-A (GB)
Title: Improvements in and relating to advertising or display devices
IPC: G09F1/08
Filed: 1936-12-04
Abstract: 483,858. Collapsable advertising - models. WARDLE, E., JONES, H., and TODD, C. I., (trading as WARDLE & CO., E.), and ROME, J. E. Dec. 4, 1936, No. 33291. [Class 3 (ii)] An advertising-model comprises a collapsable representation of a container such as a basket or the like, provided with one or more flaps which are hingedly connected to the top of the container and, when the container is erected, are raised by one or more struts to an inclined position relative to the top of the container to form a representation of the contents of the container. The flaps may be connected to the struts or merely engaged by them. In the embodiment shown in Figs. 1, 2, the representation of a basket is formed by a U-shaped member 19 having its ends secured in slots in a background 12 by a member 20 and having a part 19a secured to an extension 18 of a part 17 bent out of the background. When the device is erected from the collapsed position, flaps 21, 22, 23 simulating strawberries are raised to a display position by a box-strut 24 which is secured to the background and has shoulders engaging the flaps 22, 23. In a further arrangement, Fig. 7, in which the representation of a barrel is formed as described in Specification 434,888, the flaps 43, 44 simulating apples, are raised to their display position by struts 45, 46 secured to the member 42 which, in conjunction with the member 41, serves to erect the envelope 40.
Patent GB-892680-A (GB)
Title: A dry shaver
IPC: B26B19/28
Filed: 1958-10-17
Abstract: 892,680. Dry shavers. LICENTIA-PATENT-VERWALTUNGS-G.m.b.H. Oct. 17, 1958 [Nov. 1, 1957; Dec. 20, 1957; Jan. 23, 1958], No. 33294/58. Class 131 [Also in Group XXXVI] A dry shaver comprises a cutting head 2 at one end of a casing 1 which encloses a direct current motor 3, the other end of the casing being closed by interchangeable caps carrying connector and/ or circuit members for alternative power sources, viz. external or internal battery or mains supply. The caps have projections 19, 20 which engage in recesses 67 in internal clip members 66 provided at the sides of the casing and having guide grooves receiving mounting and contact springs 6, 7 and contact members of the power source, the grooves being differently spaced at each side to prevent connection with the poles reversed. As shown in Fig. 1 mounting and contact springs 6, 7 from the motor engage contact members 15, 16 of a battery 10 mounted on a resilient member 21 in a cap 17. For operation by an external battery, the battery 10 is removed and the cap 17 is replaced by a cap 22 (Fig. 3) having terminals 23 for a lead 24 from a car plug 29, or other plug or clamping connection, a terminal board 25 connected to a resistance 26 and contacts 27, 28 for the contact springs 6, 7. For connection to a mains supply a cap having a transformer and rectifier is substituted and in a modification, the transformer and rectifier are provided in a mains plug which may have a socket in which a car plug is inserted perpendicularly to the direction of the mains plug pins. As shown in Figs. 12 and 13, springs 6, 7 are welded to a motor casing 56 at 69, pins 68 moulded to the casing 1 aiding in positioning the battery 10, and the moulded parts 48, 49 of the casing 1 are held together along contacting edges by clips 64<SP>1</SP> and resilient pins 65<SP>1</SP> inserted through thickened portions, the motor being secured without direct screwing to the casing 1, by screws 51 and nuts 54 which secure the motor casing 56 and projections 55 of the parts 48, 49 of the casing 1 to an end plate 50 which is externally threaded for adjustment of a ring 75, carrying the cutting plate 74, relatively to the rotating cutter 71 mounted directly on the motor shaft 70. A switch lever 5 has a button 64 projecting through a resilient mask 65 which retains the lever in on and off positions.
Patent GB-1091668-A (GB)
Title: Method of manufacturing cages for needle bearings
IPC: B21D53/12
Filed: 1966-07-25
Abstract: 1,091,668. Making bearings. RIV-SKF OFFICINE DI VILLAR PEROSA S.p.A. July 25, 1966 [July 31, 1965], No. 33396/66. Addition to 945,932. Heading B3A. [Also in Division F2] The method of making needle bearing cages according to the parent Specification is modified in that each window in the cage is punched with a width greater than the roll diameter except for a pair of constricted regions, each defined by a pair of mutually opposing ribs on the window flanks, the ribs being slotted in a direction inclined to the cage axis to form rollguide surfaces and roll retaining projections, the depth of the slotting being less than the amount by which the ribs protrude from the flanks of the windows. The bars joining the end rings of the cage may be radially reduced in thickness by internal or external machining.