baber/WOPTO huggingface dataset:
Patent GB-1161403-A (GB)
Title: Improvements in or relating to Electric Switches
Inventor: WARD WILLIAM EDWARD
IPC: H01H15/06
Filed: 1965-08-27
Abstract: 1,161,403. Electric switches; contacts. PLESSEY CO. Ltd. 25 Aug., 1966 [27 Aug., 1965], No. 37029/65. Heading H1N. A switch for muting a record player by earthing the pick-up connections and under control of the tone arm movements, comprises spring wire contacts 10, Fig. 1, engageable with fixed contacts 11, Fig. 3, having inclined edges 12 whereby the wire slides transversely during making and breaking. The wire contacts 10 are lifted away from the contacts 11 by a member 3 pivoted about a supporting edge 4, and yieldingly restrained by ends 7 of the contact wires 10. Rearwardly projecting U-shaped ends 8 of the contact wires 10 arranged in pairs form jack plug contacts for a stereo record player. In a modification, Fig. 6, the actuation member 3 is restrained by the wire contact 10 only and the fixed contacts 16 are arranged above the wires 10 so that they rest against insulators 18 in the normally open position.
Patent GB-823280-A (GB)
Title: Improvements in or relating to mechanical pencils
Inventor: SMITH BLANCHARD DRAKE
IPC: B43K21/14
Filed: 1956-12-04
Abstract: 823,280. Propelling pencils. SCRIPTO Inc. Dec. 4, 1956, No. 37083/56. Class 146(3) A feed tube for a propelling pencil has an internal thread formed within the bore thereof for actuating a lead-propelling member, opposed longitudinal wall portions and spaced longitudinal ribs intermediate said wall portions forming external longitudinal groves therebetween, said longitudinal grooves extending into the body of the tube in depth to meet said internal thread. As shown in Fig. 3, the tube 100 has three grooves on each side, each groove being separated from the next by a rib 104. An alignment sleeve 28 is fitted over the reduced front end of the tube 100, having at its rear a flange 32 which closes the forward ends of the said grooves and being of reduced bore at 30 to ride the outer surface of a longitudinally slotted guide tube 20. The grooves co-operate with the inner wall of the barrel 10 to serve as compartments for carrying spare leads L<SP>1</SP> which rest on the flange 32. The flange 32 rests upon a friction ring 36 seated in the barrel 10 for rotatably supporting the feed tube 100 and imposing a frictional drag thereon sufficient to prevent reverse motion of the lead feeding mechanism under writing pressure. The guide tube 20 is secured in the writing tip 12 of the pencil by dimples 18 on a shank portion 16 thereof and extends backwards through the feed tube 100 until it emerges from the rear end of the tube where it carries ears which overlie a washer 42 beneath which is another washer 44 abutting the rear face of the feed tube. The washer 44 has arms 48 fitted to the rear end of the feed tube 100 and secured thereto by dimples 50 in a sleeve 52 which is itself anchored to the feed tube by a number of inwardly crimped ears 54. A cap 14 is pushed over the sleeve 52 and is removable to expose an eraser 60 mounted in the rear end of the sleeve, the eraser being removable to allow of access to the spaces for spare leads. Inside the guide tube 20 is a lead propelling member 24 having a toothed lug 26 which projects laterally through the longitudinal slot of the guide tube 20 for actuation by the double threads 106 on the feed tube 100 when the latter is rotated by turning the cap 14 attached thereto to advance or retract the lead L.
Patent GB-1522524-A (GB)
Title: Process for the conversion of hydrocarbons
IPC: B01J35/10
Filed: 1975-09-11
Abstract: 1522524 Hydrodemetallization of residual oils SHELL INTERNATIONALE RESEARCH MAATSHAPPIJ BV 11 Sept 1975 [13 Sept 1974] 37402/75 Addition to 1438645 Heading C5E The process described and claimed in Parent Specification for demetallizing and subsequently catalytically converting a residual hydrocarbon oil is carried out using a demetallization catalyst which has been prepared by the nodulizing technique and has a pore volume in pores with a diameter larger than 50 nm of at least 0À2 ml/g. The catalyst carrier can be prepared by granulating on a rotating disc granulator a powder having a diameter of at most 0À1 mm to form 1-4 mm granules. In Examples, the catalyst carrier is prepared by granulating (a) spray dried alumina, (b) spray dried alumina + 2% glass powder and (c) soot, the carrier is calcined and impregnated with nickel nitrate, either ammonium molybdate or vanadyl oxalate and optionally monoammonium phosphate.
Patent GB-302667-A (GB)
IPC: D01F2/30
Filed: 1928-12-19
Abstract: 302,667. I. G. Farbenindustrie Akt.- Ges. Dec. 19, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Cellulose ester and ether solutions, processes for making filaments and films from.-In the manufacture of films, threads &c. from solutions of cellulose esters and ethers in easily volatile solvents which dissolve gases, the evaporation of the solvent during the working-up of the solution, is conducted, during at least the early part of the process, at a low temperature, for example, at 10‹ C. to 20‹ C., so as to obviate the formation of impervious skin and to provide an escape for the dissolved gas given off at this stage. In the later stages a higher temperature may be employed. In examples, solutions of ethylcellulose in carbon bisulphide-ether, are converted into bubble-free films by conducting the evaporation of the solvent at 3‹ C. and 5‹ C.
Patent GB-660782-A (GB)
Title: Improvements in and relating to ice trays
IPC: F25C1/24
Filed: 1946-12-24
Abstract: An ice-freezing receptacle or cup is made of a thermoplastic mix of an ethyl cellulose and four to six per cent of metal powder, e.g. aluminium.
Patent GB-1072089-A (GB)
Title: Improved air scavenging structure for internal combustion engines
IPC: F02B3/06
Filed: 1965-09-06
Abstract: 1,072,089. Scavenging two--stroke engines. AVCO CORPORATION. Sept. 6, 1965 [Dec. 16, 1964], No.37968/65. Heading F1B. In an air-cooled engine having two pairs of cylinders 12 in V-formation, a scavenging air reservoir 28 extends around the skirts 48 of the cylinders which are inserted in aligned openings 52, 54 in the reservoir and crank-case upper walls. The reservoir is fed by an air compressor (70), Fig. 5 (not shown), and a baffle (58), Fig. 3 (not shown), extends from the outer wall (40) of the reservoir to the adjacent cylinder skirt of each cylinder to provide an even distribution of the air to pairs of cylinder inlet ports (24, 25), Fig. 7 (not shown). The air passes to the inlet ports via openings (64, 66), Fig. 2 (not shown), in the upper wall of the reservoir on opposite sides of each cylinder.
Patent GB-1214755-A (GB)
Title: A porous layer of a secondary electron multiplier and a method of manufacturing the same
IPC: H01J29/44
Filed: 1969-07-30
Abstract: 1,214,755. Electrode materials and processing. NIPPON HOSO KYOKAI. 30 July, 1969 [3 Aug., 1968], No. 38147/69. Heading H1D. [Also in Division C7] A secondary emissive cathode or a target for a SEC type camera tube comprises a porous layer formed by evaporating a solid solution or sintered mixture of MgO, Al 2 O 3  or CaO and a lower melting point material such as cryolite (Na 3 AlF 6 ) or potassium chloride. A preferred composition comprises 70-25% by weight MgO and the balance cryolite. In the particular example given, equal quantities of these materials are mixed in a platinum crucible and heated in air for one hour at about 1100 C.; the product is crushed and evaporated by heating to 1000 C. in an argon atmosphere at a pressure of 1 Torr to form a porous layer 25 microns thick which is stable under subsequent heat treatment at 400 C. of the tube in which the layer is used.
Patent GB-1407675-A (GB)
Title: Bonding refractories
IPC: C04B35/01
Filed: 1971-08-13
Abstract: 1407675 Refractory shapes STEETLEY (MFG) Ltd 10 Nov 1972 [13 Aug 1971] 38161/71 Heading C1J Refractory shapes are made by forming a mixture of graded particulate refractory substance, bituminous substance and from 0À1 to 0À6 wt. per cent sulphur (based on wt. of refractory substance), pressing the mixture to form a shape, raising the temperature of the shape at 40‹ to 100‹ C./hour until a temperature in the range from 180‹ to 310‹ C. has been attained, at which temperature the shape is maintained for from 2¢ to 10 hours, The refractory substance may be dead-burned dolomite, dead-burned magnesia, dead-burned lime or physical mixtures or coclinkers of these together optionally with zirconia, zircon chromia or titania. The bituminous substance may be tar, pitch, bitumen, petroleum distillate residues or asphalt. The refractory substance and carbonaceous substance may be heated before mixing to 50‹ to 300‹ C. Carbon may be incorporated in the carbonaceous substance. The examples describe the preparation of refractory block from dead-burnt dolomite and tar or pitch together with sulphur.
Patent GB-1407246-A (GB)
Title: High voltage switching systems
IPC: H03K17/10
Filed: 1972-08-16
Abstract: 1407246 Converting SYBRON CORP 16 Aug 1972 [16 Aug 1971] 38262/72 Heading H2F [Also in Divisions H3-5] A switching circuit for enabling selection of different values of an E.H.T. voltage comprises two switching devices 17, 18 connected in series between power supply terminals (e.g. supply 10) each in parallel with a diode 20, 20A for carrying reverse current, further terminals for connecting a second power supply e.g. 7, 8 or 9 in series with the first and Zener diodes 35 and 32, 33 or 34 connected between the supply terminals to carry reverse current e.g. due to discharge of a capacitive load. The figure shows a 6 kV D.C. supply 7 which may be connected selectively in series with 2 kV D.C. supplies 8, 9, 10 to provide different values of target voltage for a penetration type colour cathode ray tube. The D.C. supplies are conventionally isolated from each other by an A.C. only coupling to the common A.C. supply source 14. The switching devices 17, 18 and the corresponding devices in switching circuits 11 and 12 each comprise a number of transistors appropriate to the voltage connected in series. When the switch 17 is conducting the associated supply is effective and when it is not conducting the output terminals at the switching circuit are shorted by switching device 18 to provide a path for the current from the other sources. The screen acts as a capacitive load and accordingly when the voltage supply to it is reduced a reverse discharge current flows this passes through the diodes 28 of the circuits not in use and through the diodes 20 for the supplies which are connected. To prevent excessive reverse current in the supplies the reverse path is blocked by diodes 36 and 39 and the current passes through the corresponding Zener diodes 32-35 which are normally non-conducting but conduct when the voltage across them is raised by the reverse current. Control of the switching devices 17 and 18 is effected by a circuit 30 acting through inverting amplifiers 27 and non-inverting amplifier 28 which control respective light emitting diodes 25 coupled through optical fibres to the bases of photo transistors 22. Diodes 20A are arranged to break down in Zener fashion in the event of non-conduction of the transistors causing excessive forward voltage across the transistors. Diodes 40-43 ensure correct starting conditions.
Patent GB-1174096-A (GB)
Title: Grinding Wheels for Precision Grinding
IPC: B24D18/00
Filed: 1966-11-16
Abstract: 1,174,096. Abrasive wheels. N. KUMAGAI. 16 Nov., 1966 [16 Nov., 1965], No. 38887/66. Heading B3D. [Also in Division C4] A method for producing a graphite-bonded grinding wheel for precision grinding comprises thoroughly mixing abrasive grains with a bonding material composed of from 40 to 60% by weight of finely-divided graphite and from 60 to 40% by weight of a clay mixture comprising from 30 to 70% by weight of kaolin and from 70 to 30% by weight of montmorillonite, adding from 3 to 10% by weight of water to the resulting mixture of abrasive grains and bonding material, pressure moulding the resulting wet mixture to form a green wheel, heating the green wheel in a graphite saggar in an inert atmosphere at a temperature from 850‹ to 950‹ C., thereby producing a sintered wheel containing micropores, and impregnating the micropores with a lubricant, e.g. stearic acid.
Patent GB-1271947-A (GB)
Title: Window assembly
Inventor: SMITH BRIAN WYNYATES
IPC: E06B3/02
Filed: 1968-08-14
Abstract: 1,271,947. Sashless window. HILL BROS. GLASS CO. 23 July, 1969 [14 Aug., 1968], No. 38901/68. Heading E1J. A window assembly comprises a sheet of unframed toughened glass 14 hinged to a support and engageable with a solid undeflectable sealing strip 13 which is secured to a frame 10. The sealing strip 13 is of rubber or synthetic resin and is mounted in grooves 11 in metal frame 10. The glass is hinged to frame 10 or to support 12 at a vertical or horizontal edge. Arms 15, to support the glass in an open position, are pivoted to a bracket 16 on the glass, and have rollers 18 which run in guides 19. (For Figure see next page)
Patent GB-846786-A (GB)
Title: Improvements relating to bearings
Inventor: COLEY SAMUEL ERNEST
IPC: F16H19/02
Filed: 1957-12-14
Abstract: 846,786. Bearings. COLEY BROS. (TOOLS) Ltd. Dec. 11, 1958 [Dec. 14, 1957], No. 38971/57. Class 12 (1). A cage for balls 14 disposed between a shaft 10 and housing 11 comprises a sleeve 12 having openings 13, to receive the balls, arranged in a series of helical lines, the cage being restrained from axial movement by ball thrust bearings 15. The balls are pre-loaded by making the space between the shaft 10 and housing 11 slightly less than the diameter of the balls. Annular end members 16 carry seals 17.
Patent GB-1202062-A (GB)
Title: Improvements in or relating to gas turbines
IPC: F02C9/34
Filed: 1967-08-24
Abstract: 1,202,062. Fluid servo control. P RVNI BRNENSKA STROJIRNA ZAVODY KLEMENTA GOTTWALDA NARODNI PODNIK. Aug. 24, 1967. No.39032/67. Heading G3P. [Also in Division F1] A gas turbine plant has a low pressure set 1, 2 driving a generator 3, a high pressure set 5, 6 on a separate shaft, and high and low pressure combustion chambers 9, 10. The control system is  supplied by oil pump 24 and closure or starter valve 23 causes a build-up of pressure in line I to initiate depression of piston 26 of valve 16. Edge 28 of piston 28 causes a pressure build-up in line II to cause depression of piston 30 of valve 17 whereby edge 38 of piston 34 causes a pressure build-up in line III to initiate opening of the fuel valve 19 supplying combustion chamber 9. This action is eventually over-ridden when an electrohydraulic temperature sensor 13 at the chamber outlet actuates leak valve 15 to assume control of valve 19. Continued depression of piston 26 eventually causes edge 40 to create a pressure build-up in line IV to initiate opening of the fuel valve 18 supplying combustion chamber 10, this valve eventually coming under the control of temperature sensor 22 at the chamber outlet which actuates leak valve 20. Valves 16, 17 are loaded by pressures in lines V, VI, VII under the control of regulators 33, 43, 36, respectively. Speed governors 11, 12 can control the signal levels in lines I, III. Each shaft has a starter motor 4, 7.
Patent GB-344971-A (GB)
Title: Improvements in the manufacture and production of methylamine
Filed: 1929-12-24
Abstract: Methylamine is produced by heating under pressure a carbimide or an imide of a carboxysulphonic acid or a methylol compound thereof in the presence of a small quantity of water with formaldehyde or a polymer thereof such as polyoxy- or trioxymethylene, if desired in the presence of an organic, inert and water-soluble solvent such as methanol, ethanol, ethyleneglycol, propandiol, glycerol or dioxane, and then saponifying the resulting compound by heating it under pressure with aqueous sulphuric acid or caustic soda.  Diacetamide is a suitable imide, but imides of dibasic acids such as phthalimide, the imide of o-sulphobenzoic acid or cyanuric acid give better results.  It is stated that the free phthalic acid recovered in the saponification process may be converted into the imide.  In examples: (1) Phthalimide is converted into methylphthalimide by treating it with aqueous formaldehyde and methanol and the product is saponified with sulphuric acid; (2) o-sulphobenzoic acid imide is treated with trioxymethylene, water and methanol and the product is saponified with caustic soda; (3) phthalimide is converted into N-methylolphthalimide by treating with formaldehyde and then into N-methylphthalimide by treatment with formaldehyde and methanol.  The product is saponified with caustic soda; (4) phthalimide is converted into methylphthalimide by treatment with aqueous formaldehyde and the product is saponified with caustic soda; (5) diacetamide, succinic imide or cyanuric acid are treated with trioxymethylene, water and methanol and then saponified with caustic soda.
Patent GB-888984-A (GB)
Title: Firearm receiver assembly
Inventor: LEWIS OLIVER NELSON
IPC: F41A19/11
Filed: 1960-11-17
Abstract: 888,984. Firearms. OLIN MATHIESON CHEMICAL CORPORATION. Nov. 17, 1960, No. 39557/60. Class 119. Relates to gas operated firearms in which a slide actuated by a gas piston is connected to and operates a reciprocating bolt assembly. According to the invention the receiver 13, Fig. 2, is formed with laterally spaced depending side walls 16, 14 which are vertically spaced from guide rails 46, 47, Figs. 2, 4, forming part of a trigger guard assembly so as to provide sliding clearance for the slide arms 27, 28, Figs. 2, 3, of the slide, the respective slide arm and guide rail on each side being co-planar with the corresponding depending side wall as shown in Fig. 2. The rear end of the receiver is mounted upon a boss 17, Fig. 1 (not shown), formed integral with a recoil block 18 secured to the stock 10 by means of a screw 19. The slide is formed with inturned ear portions 29, 31, Fig. 3, formed with apertures 34, 36 adapted to receive a pin which passes through a slot in the bolt assembly. The front ends of the slide arms are connected to a driving block 37 actuated by a gas piston (not shown). The rear end of the trigger guard is secured by a screw to the recoil block while its forward end is connected to the receiver 13 by means of a T-shaped key 43 which engages a mating slot in the receiver. The trigger guard assembly is also provided with a second pair of spaced guide rails 45, 50 which are straddled by the ears 29, 31 of the slide and prevent relative lateral movement of the slide and guide rails. A finger piece 38 is provided on the slide so that it may be actuated manually.
Patent GB-1202065-A (GB)
Title: Apparatus and method for removing solid particles and/or other impurities from a gas
Inventor: MARKS ALVIN MELVILLE
IPC: B03C3/013
Filed: 1967-08-30
Abstract: 1,202,065. Purifying gases; electrostatic separation. A. M. MARKS. 30 Aug., 1967 [3 Oct., 1966], No. 39606/67. Headings B1R and B2J. In an apparatus for purifying a gas containing solid and/or other impurities the gas is passed through a conduit 10 is sprayed with a mist of fine liquid droplets from capillary tubes 16, an electrode 18 connected to a source of D.C. potential being disposed such that a charge is imparted to the fine droplets of liquid, the charged liquid droplets subsequently being co-agulated and discharged to remove the impurities. Liquid is supplied from a tank 13 by a pump 14, chemical additives such as a peroxide being supplied from a tank 28. The electrode 18 may be in the form of spaced vanes between which the gas and liquid spray pass and the discharging means may comprise a lattice-member 25 with needle-like projections 26. Alternatively the discharging means may consist of a sleeve mounted within and insulated from the conduit 10 and maintained at a potential opposite to that applied to the electrode 18. In a modification the gas to be cleaned is divided into two streams each stream being sprayed with fine liquid droplets, a positive charge being given to the droplets in one stream and a negative charge to the droplets in the other stream after which the streams are reunited.
Patent GB-1500355-A (GB)
Title: Electric discharge lamp
IPC: H01J61/36
Filed: 1976-09-24
Abstract: 1500355 Metal vapour lamps PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 24 Sept 1976 [29 Sept 1975] 39787/76 Heading H1D In a discharge lamp, e.g. a high pressure Na lamp, with ceramic envelope 10, e.g. of polycrystalline or single crystal alumina, spinel (MgAl 2 O 4 ) or Yttria, those parts of cylindrical Nb or Ta lead-through conductors 13, 14 from the electrodes, projecting from the envelope and reaching a temperature above 500 C. or preferably 350 C., are protected particularly from O 2  or N 2 , or air, in the absence of an outer jacket, by ceramic sleeves 15, 16 sealed gastightly to the conductors. If the conductors are tubular and open, the interior may be similarly protected by a ceramic plug 26 (Fig. 3). The sealing medium may be a glass comprising Al 2 O 3 , CaO, BaO, MgO, B 2 O 3 , SiO 2 . The alumina envelope 20 (Fig. 3), shrinkage sintered to alumina disc 21 and protected by glass-sealed alumina disc 24, carries Nb conductor sleeve 22 bearing moulded alumina sleeve 25 sealed to the conductor and to disc 24. The sleeve 25 may be combined with disc 24 as in Fig. 4, and also with disc 21 (Fig. 5, not shown). A starting electrode, possibly fed via a resistor from the neighbouring electrode (Fig. 1, not shown) may be sealed into the end disc (Fig. 5, not shown).
Patent GB-1125140-A (GB)
Title: Composition and method for treating textile products of polyamides
IPC: D06M13/418
Filed: 1965-09-17
Abstract: 1,125,140. Treating polyamide fibres. KANEGAFUCHI BOSEKI K.K. 17 Sept., 1965 [21 Sept., 1964], No. 39854/65. Heading DIP. Synthetic polyamide textile materials are rendered hygroscopic and antistatic bytreating them with an aqueous solution of an addition compound of a lactom or oligomer thereof up to and including the pentamer thereof and 2-10 mols per mol of lactam or oligomer thereof of an alkylene oxide having 2, 3 or 4 carbon atoms, in the presence of a swelling agent for polyamides, e.g. phenol, benzyl alcohol, cyclohexanol, phenolsulphonic acid, formic acid, acetic acid and monochloroacetic acid, and then heat treating the materials. The treating solution may be applied to the textile material by padding, dipping or spraying and the impregnated material then squeezed, dried at a temperature not higher than 100C, heat treated at a temperature above 100C for from several seconds to several minutes, washed to remove the swelling agent and dried. The textile material may be in the form of filaments, yarns, woven or knitted fabrics or articles of clothing. Fabrics comprising nylon and polyester yarns may be treated. Crimped yarns may be produced by treating nylon filaments with an aqueous solution containing the addition compound and a swelling agent, false-twisting them on a false-twister and heat setting them and then washing and drying.