baber/WOPTO huggingface dataset:
Patent GB-815682-A (GB)
Title: Preparation of hexachloromelamine
Inventor: RANDALL DENNIS STEPHEN
Filed: 1957-04-12
Abstract: Hexachloromelamine is produced by suspending melamine in water and treating the suspension with either chlorine and an alkaline substance, or an alkali metal hypochlorite and a mineral acid, while maintaining the pH between 3 and 8, preferably between 4 and 7, separating the hexachloromelamine, liberating a major part of the water retained in the product by treatment with 10-25 per cent by weight of a water-immiscible non-polar solvent, e.g. CCl4, removing the liberated water, and evaporating the solvent and residual water, e.g. by air warmed to 50-100 DEG  C.  The pH control can be achieved by using buffers, or by adding the alkaline substance, such as sodium carbonate or sodium hydroxide, at a rate equivalent to the rate of absorption of chlorine.  In an example, a suspension of melamine is treated with sodium carbonate solution and chlorine simultaneously to maintain a pH of 5-7, water removed from the product by treatment with CCl4, and the product dried in warm air.
Patent GB-898352-A (GB)
Title: Fluid flow control valve
Inventor: MUNRO ROBERT
IPC: F16K3/28
Filed: 1958-04-16
Abstract: 898,352. Valves. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. April 9, 1959 [April 16, 1958], No. 12063/58. Class 135. A valve comprises a body having an inlet and an outlet and containing a metallic valve closure member which is hollow and expandable against the valve body by internal fluid pressure. A rotary cylindrical valve, Fig. 1, comprises a body 1 having inlet and outlet ports 2 and 3 and a hollow liquid-filled metallic cylindrical closure member 4 with a tubular through passage 6. When the closure member 4 is in the closed position shown, a screwed stem 9 may be rotated to enter the closure member and pressurise the liquid 5, thus expanding the closure member against the body 1. The body and closure member are preferably of different materials, e.g. bronze and chromium-plated stainless steel respectively. In another example, Fig. 2, a solenoid-operated valve comprises a body 1 with inlet and outlet ports 2, 3 and a port 6 connected to a vacuum pump. The liquid 5 is supplied from a high pressure source (not shown) through a coiled tube 13. One of the ports 2 or 3 may be plugged.
Patent GB-668031-A (GB)
Title: Production of briquettes
Inventor: RATHERT HERMANN
IPC: C10L5/14
Filed: 1950-05-15
Abstract: In a method for producing weather-resistant briquettes or pressings, e.g. of fuel or ores, or mixtures of fuels or ores, the binding agent comprises cellulose xanthate which is made by treating cellulose derived from wood, potato tops, etc., with caustic soda and carbon bisulphide and which is suspended but not dissolved in water. Xanthate produced in the synthetic fibre industry is not suitable for this purpose.  The briquettes may be made in any of three ways, viz. by mixing xanthate with the material and then adding water, or by mixing xanthate with water and then adding the material, or by mixing the material with water and then adding the xanthate.  The xanthate is either stabilized by cooling it to 15 DEG  C. after sulphiding or, by drying it in a warm air stream.
Patent GB-728631-A (GB)
Title: Improvements in or relating to evaporator for absorption refrigerating plant
IPC: F25B39/02
Filed: 1953-05-01
Abstract: 728,631. Refrigerating. HOLZHEU, H. May 1, 1953 [May' 3, 1952], No. 12141/53. Class 29. An evaporator 4 for a continuous cycle absorption system of the inert gas type and supplied with liquid refrigerant through a pipe 13 and with inert gas through a pipe 14 having apertures 15, includes an evaporation chamber 8 defined by upper and lower annular slates 9, 10 and filled with metal balls 18, metal chips, helical springs, tube pieces, raschig rings or the like to increase the surface available for evaporation. Pipe 13 discharges above the disc 9 which has apertures 11 to allow the liquid refrigerant to enter the chamber 8.
Patent GB-554372-A (GB)
Title: Improvements in or relating to cellulose derivative compositions and filaments, films and other articles made therefrom
IPC: D01F2/28
Filed: 1941-09-20
Abstract: 554,372. Cellulose derivative compositions; artificial filaments, films &c. BRITISH CELANESE, Ltd. Sept. 20, 1941, No. 12190. Convention date, Feb. 13. [Class 2 (ii)] Shaped articles having a basis of a carboxylic acid ester of cellulose are obtained by shaping a solution, in a volatile solvent, of a carboxylic ester of cellulose and an ester of methacrylic acid with a partially etherified polyhydric alcohol in a substantially unpolymerized condition consisting essentially of the monomer. The volatile solvent is removed and the shaped articles are treated so as to cause polymerization in situ of the methacrylate contained in them. The methacrylate may be an ester of methacrylic acid with the monoethyl or monobutyl ether of ethylene glycol, with the monoethyl ether of diethylene glycol, with 1:3 butylene glycol monomethyl ether, with the monobutyl ether of diethylene glycol, or with the monomethyl ether of tetraethylene glycol. The cellulose ester may be cellulose acetate, propionate, butyrate, or acetate-butyrate. The volatile solvent may be acetone, acetone with ethyl or methyl alcohol, or methylene chloride with ethyl or methyl alcohol. The solutions may be used as spinning solutions for the production of yarns, or films, or other sheet materials, or they may be used as lacquers or coating compositions for metal, glass, or other surfaces, or they may be used as adhesives, e.g. for uniting clear plastic sheets to sheets of glass in the production of shatterless glass. Filaments or films may be made by wet or dry extrusion methods. Films or sheets may be made by casting on to metal or glass forming-surfaces. Wrapping foils, films for photographic purposes, or sheets for laminating with glass, may be made. Sheets may be made by blocking and cutting. Polymerization may be effected by exposure of the shaped articles to heat or light, e.g. ultra-violet light or by addition of catalysts such as organic peroxides, e.g. benzoyl peroxide, or ozonides, to the solution followed by heating the product. The methacrylate may be present in the solutions in varying amounts e.g., 20-100 per cent. based on the weight of the cellulose ester.
Patent GB-974435-A (GB)
Title: Improvements relating to collars for shirts and like garments
Inventor: ROBINSON JOHN REGINALD
IPC: A41B3/06
Filed: 1962-03-30
Abstract: 974,435. Collar stiffeners. CLITHEROE SHIRTINGS Ltd. March 22, 1963 [March 30, 1962], No. 12220/62. Heading A3V. A stiffener 3 is retained between layers 1 and 2 of a collar interlining by inserting tongues 7 and 8 through slits 4 and 5, 6. The layer 1 is then fused to the layer 2. An alternative form of stiffener is shown is Fig. 3.
Patent GB-1165451-A (GB)
Title: Float for Measuring Liquid Levels
Inventor: BECKER WINFRIED
IPC: G01F23/76
Filed: 1967-03-15
Abstract: 1,165,451. Liquid level indication. EUROPEAN ATOMIC ENERGY COMMUNITY. March 15, 1967 [March 30, 1966], No. 12221/67. Heading G1H. A float 2 for the accurate measurement of a liquid level is provided with a temperatureresponsive element, such as an expansion body 5, which moves an inductor disc 4 vertically to compensate for any deeper immersion of the float in the liquid due to a decrease in liquid density with a rise in temperature. The temperature responsive element may be bi-metallic strips used in conjunction with a sleeve of magnetic material within the float, Fig. 2 (not shown), or a fluid expanding a bellows supporting a cylinder with the float, Fig. 3 (not shown).
Patent GB-1037195-A (GB)
Title: Alternating voltage generator
IPC: H03B5/10
Filed: 1964-03-23
Abstract: 1,037,195. Valve oscillating circuits. COMPAGNIE FRANCAISE THOMSON-HOUSTON. March 23, 1964 [March 26, 1963], No. 12234/64. Heading H3F. An oscillator comprises a valve amplifier having a resonant output circuit 2, Fig. 1, which is back-coupled to the input of the valve via a four-terminal network 5 comprising first and second shunt reactances 12, 13, respectively, of the same sign, and in which the reactance 12 may be wholly or in part the input reactance of the valve. The network also comprises first and second series reactances 14, 15, respectively, which, with the input to the valve grid, as shown, are both of the opposite sign to the shunt reactances: with the input to the cathode instead, the reactance 15 must be of the same sign as the shunt reactances (Fig. 2, not shown). The reactances 13, 15 may be variable. The use of a capacitor as reactance 12 reduces harmonics. The reactances 13, 14 are made of the same absolute value at the operating frequency and reactance 15 much greater than either: with these conditions, the phase-shift through the network is 180 degrees (or 0 degrees in the alternative cathode drive circuit) and is independent of the input resistance 11 of the valve, so that grid current does not affect the phaseshift of the feedback path and hence the efficiency of the oscillator. Correction for the finite value of the reactance 15 can be made by slight variation of the reactances 13, 14 from exact equality. The reactance 15 may be coupled to the rest of the network 5 via a transformer, the shunt reactance 13 being connected either across the primary or secondary windings, or distributed between the two (Figs. 3, 4, not shown); the connections to one side of the transformer may be reversed, enabling the sign of the reactance 15 to be the opposite to that used in the basic network (Fig. 5, not shown). In an oscillator using a network of this latter type the valve obtains its anode supply over a choke 20, Fig. 6, and feeds via blocking capacitor 27 a tuned circuit 24, 25 in which the load 26 is placed in series with inductor 25. The four terminal network comprises capacitors 12, 13c, 15c and inductor 14, the capacitors 13c, 15c being variable, and the valve is biased by means of grid leak 21. In another embodiment the anode of the valve is grounded and the second series reactance 15, Fig. 7, of the four terminal network comprises an inductor through which the D.C. supply to the cathode is fed. The anode load, coupled over blocking capacitor 27, comprises a network of the type disclosed in Specification 971,315.
Patent GB-1087951-A (GB)
Title: Information transfer system
IPC: G06K15/14
Filed: 1965-03-23
Abstract: 1,087,951. Selective printing. BORGWARNER CORPORATION. March 23, 1965 [April 9, 1964], No. 12295/65. Heading B6F. In a system for directing a mass of charged particles for direction through a stencil on to a web, a charge head comprises an array of electrodes 25, 26 having a central axis 24, there being a plurality of pairs of such electrodes, one electrode of each pair being nearer the central axis thanthe other. The former or inner electrodes of each pair are connected directly to one terminal of a firing source, but the other terminal is connected to the outer electrodes via resistors, whereby the firing of one pair of electrodes does not inhibit the firing of the other pairs. One array is provided for each stencil aperture, the charged particles passing therethrough impinging on a tape which is subsequently developed and fixed. The stencil may be in the form of an endless metallic band, a hollow cylinder, or a' disc having apertures denoting single characters to be selectively positioned before each array.
Patent GB-552889-A (GB)
Title: Improvements in and relating to the evaporation of liquids
IPC: B01D3/10
Filed: 1941-09-24
Abstract: 552,889. Distilling liquids; film evaporators. POTTS, H. E. (Distillation Products, Inc.). Sept. 24, 1941, No. 12342. [Class 32] [Also in Group XI] The high vacuum unobstructed path distillation of liquids is effected by flowing the liquid down an electrically heated open helix which supports by surface tension the liquid in the form of a continuous column. As shown in Fig. 4 a plurality of coils 6 are suspended between irisulated conducting members 26, 29 and the liquid is fed thereto from a rotating disc 34. The vapours are condensed on the walls 21 of the vacuum chamber 20 and the condensate collected in gutters 39, 40. The coils may have tappings arranged along their length in order to control the heating of the sections between the tappings; the degree of heating may also be controlled by varying the spacing of the turns of the helix.
Patent GB-720953-A (GB)
Title: Primary electric cell
IPC: H01M6/04
Filed: 1953-05-04
Abstract: 720,953. Batteries. RUBEN, S. May 4, 1953, No. 12369/53. Class 53. A primary cell comprises aluminium and carbon electrodes and an electrolyte consisting of a solution of a halogen salt of manganese, nickel or cobalt. The Figure shows a cell comprising an aluminium cup 1 lined with paper and enclosing the depolarizer 4 of manganese dioxide and carbon black. The depolarizer and paper lining are moistened with a solution of manganous chloride containing a small quantity of borax. A fluted carbon rod 3 is provided with a metal cap 9 which also serves to close the cell. Gas can escape through a hole 10 in the cap 9. An absorbent paper disc 7 above a waxed paper disc 6 retains any electrolyte discharged above the depolarizer 4. The electrolyte may comprise a solution of the chloride, bromide or fluoride of manganese, nickel or cobalt with the addition of a borate and a corrosion inhibitor, e.g. potassium dichromate. The aluminium cup 1 may be provided with a large surface area by sintering, etching, spraying or other process and may be perforated and enclosed in a metal or plastic case.
Patent GB-1189441-A (GB)
Title: Organic Compositions containing Oxidation Retarders
Inventor: JACQUES JAMES KEITH
IPC: C07F9/28
Filed: 1966-03-21
Abstract: 1,189,441. Oxidation retarders for mineral oil lubricants. ALBRIGHT & WILSON (MFG) Ltd. 16 March, 1967 [21 March, 1966], No. 12392/66. Heading B1X. [Also in Divisions C3 and C5] The oxidation of a mineral oil lubricant is retarded by mixing with it a minor proportion, i.e. 0.01 to 5%, of an organic silicon compound of the general formula R( 4-n ) Si (CH 2 PS m R' 2 ) n  where each R is an alkyl, aryl, alkaryl or alkoxyl group, or a halogen atom, each R' is an alkyl, aryl, alkaryl, alkoxyl, or mercaptyl group, n is an integer from 1 to 4, and m is zero or 1. In an example, methyl dibutyl diphenyl-phosphinomethyl silane CH 3 (C 4 H 9 ) 2 Si CH 2 P(C 6 H 5 ) 2  is dissolved in a mineral oil, and the composition is employed as a lubricant in tests to determine lacquer deposition on a simulated I.C. engine piston.
Patent GB-256691-A (GB)
Title: Improvements in electrical coupling devices
IPC: H01R13/64
Filed: 1925-05-13
Abstract: 256,691. Barton, J., and Barton, W. May 13, 1925. Plug couplings.-The free member of a multiple plug coupling has its contact elements shrouded on all sides except the face to prevent accidental contact, and the contact elements are unsymmetrically distributed to ensure correct coupling. The sockets 8 are inserted in a block 3 of insulating material, the front end of the sockets abutting against shoulders 11 and the rear being enclosed by a cover 12. Separate channels 4 are provided for the leads. The plug member 14 has flanges 19 that shroud the contacting faces when the two members are in engagement. Specifications 186,630 and 232,334 are referred to.
Patent GB-941006-A (GB)
Title: Aircraft automatic control systems
IPC: G05D1/04
Filed: 1960-12-02
Abstract: 941,006. Automatic control of aircraft. SPERRY RAND CORPORATION. Dec. 2, 1960 [Dec. 2,1959],No. 12496/63. Divided out of 941,005. Heading G3R. The subject matter of this Specification is identical with that of Specification 941. 005 but the claims are directed to a system for automatically controlling the heading of an aircraft in which heading deviation signals are applied to a signal generator, having relatively displaceable parts, the output of which controls a velocity servomotor which adjusts the relative position of the parts as well as another two-part signal generator which thus responds only to long-term heading deviations and thereby produces signals which, together with roll deviation signals, control the ailerons. Specification 854, 732 also is referred to.
Patent GB-1456578-A (GB)
Title: Flashlights
IPC: F21L4/00
Filed: 1974-03-21
Abstract: 1456578 Electric battery lamps UNION CARBIDE CORP 21 March 1974 [22 March 1973] 12516/74 Heading F4R A push-button switching module adapted to be coupled between the battery casing of a torch and a lens and reflector unit comprises a module casing, a push-button switch secured wholly within the module casing with the button aligned with an opening in the wall of the module casing, and electrical contact means adapted, through actuation of the switch, to complete or interrupt an electrical circuit between the battery casing and the lens and reflector unit. A flexible rubber boot is secured over the opening in the module casing and may be pressed to actuate the switch. The ends of the module casing are open and are screw threaded for engagement with cooperating threads on the battery casing and unit, sealing gaskets being employed to ensure waterproof connections. The battery casing and unit may be coaxial or may be set at 90 degrees to one another, the module casing then being of the appropriate angular shape.
Patent GB-668278-A (GB)
Title: Improvements in or relating to sintered anisotropic magnets
Inventor: GARVIN STEFAN JUAN
IPC: C22C33/02
Filed: 1948-05-06
Abstract: In a process for improving the manufacture of anisotropic permanent magnets from sintered alloys, 0.1-2.0 per cent by weight of Ti is added to the mixture to be sintered.  This may be wholly or partially replaced by a chemically equivalent amount of Nb, V, Ce, B, Zr, Ta, and/or a rare earth metal.  The addition may be made in the form of a hydride, binary alloy, ternary alloy and/or any complex comprising one or more of the constituents of the alloy used, such alloy additions being uncontaminated with non-metallic impurities. Specifications 501,672, 512,375, 522,731, 569,718, 571,317, 639,488, 659,998 and 663,067 are referred to.
Patent GB-470522-A (GB)
Title: Improvements in lenses
IPC: G02B9/34
Filed: 1936-05-05
Abstract: 470,522. Lenses. WARMISHAM, A., and KAPELLA, Ltd. May 5, 1936, No. 12646. [Class 97 (i)] In an objective of the kind comprising two collective components enclosing two compound dispersive meniscus components with their concave surfaces facing each other and having a diaphragm between them, each dispersive component consists of three elements cemented together, the outer elements adjacent the diaphragm being collective menisci, each of which has a higher refractive index than the inner element adjacent to it. Each of these meniscus elements may also have a lower Abbe number than that of the adjacent inner element. Data are given for two examples, each having an aperture F /2.
Patent GB-776263-A (GB)
Title: Improvements in or relating to centrifuging machines
Inventor: HARLOW WALTER FRED
IPC: B04B3/04
Filed: 1952-05-19
Abstract: 776.263. Centrifugal separators. INTERNATIONAL COMBUSTION. Ltd. July 22, 1954 [May 19, 1952], No. 12663/52. Class 23 [Also in Group XXXV] In a centrifuging machine having a shell member B, Fig. 1, driven from a motor M and a conveyer member 1 driven at a slightly faster speed, the shafts 1, 2, Fig. -3, of the shell and conveyer respectively are connected through differential gearing comprising intermeshing stepped planets 12 15 and 16, 19 carried by the main driving pulley PM and gearing with a sun gear 20 on shaft and a sun gear 11 on a hollow shaft 9 of a control pulley PC. The gearing provides a reversed drive of the shafts 2 and 9 relatively to the pulley PM so that the shaft 9 and pulley PC normally rotate at a speed below that of the pulley PM. The pulley PC is arranged to drive a generator D so that as resistance to the differential speed of the conveyer and shell increases as a result of increased loading the pulley PC and generator D are speeded up to increase the generator output. This current from the generator can be fed back to the motor M but on reaching a value corresponding to overload conditions in the gearing it is adapted to operate a current overload trip device so that the load on pulley PC is relieved and the conveyer and shell rotate together at the same speed. Specification 658,362 is referred to in the Provisional Specification.
Patent GB-767214-A (GB)
Title: Machine for separating sheets from a pile
Inventor: FAWDRY CHARLES FREDERICK
IPC: B65H3/32
Filed: 1954-04-30
Abstract: 767,214. Feeding sheets. BARKHOUSE, H. T. April 29, 1955 [April 30, 1954], No. 12668/54. Class 100(1) Apparatus for separating sheets from the bottom of a pile comprises an endless flexible member 14 having a horizontally-extending run constituting a support for the bottom of the pile 11 and having gaps in its length, means for driving the member intermittently or continuously around a closed path, a rear plate 66 for retaining the pile 11 against movement with the member 14, and means such as a sucker 54 for drawing the front edge of the bottom sheet downwardly through a gap in the member 14 so that the latter can then travel between the pile and the bottom sheet and so peal off that sheet from the pile. As described, the sheets 11 are of cork which are to be fed to a machine which makes liners for bottle caps. The member 14 comprises an endless chain assembly including two spaced chains rigidly connected by cross rods on which rollers 17 are journalled. The chains are supported on sprockets 22, 24, 26, 28, 30, and 32, the sprockets 24, 26 being arranged so that the chains approach the front end of the pile 11 at an angle, and the rollers 17.run along supports 34 beneath the pile. The rollers 17 are spaced apart regularly except at four positions where gaps are provided to enable the sucker 54 to oscillate to withdrawn the leading edge of the bottom sheet below the chains: the moving chains then pass between that sheet and the pile to peel the sheet from the pile and the sucker releases the sheet which falls on to a conveyer 12. Near the trailing edge of each gap there is a knife at each side to assist sheet separation. The pile-retaining plate 66 may have a ledge 68 which supports the rear edge of the pile, and the sucker 54 is actuated to pull the bottom sheet clear of this ledge just before the sheet is released to fall on to the conveyer 12. The sprockets 22 are rotated intermittently from a cam shaft 38 by a Geneva motion comprising a slotted disc 36 and a chain 39 provided with three pins 40 which enter in turn into the slots 41 in the disc. The sucker 54 is attached to a bell-crank lever 46, 47 rocked by a cam on the shaft 38, and a further motion is superimposed on the sucker by a bar 56 which is slotted to fit over the shaft 38 and actuated by a cam. A third cam on the shaft 38 operates a valve 62 controlling the suction at the sucker. The pile 11 is contained in a magazine 10 open at the top and bottom. The member 14 may comprise an endless belt or band provided with one or more gaps in its length through which the sheets may be drawn by the sucker 54, and the path thereof may be wholly beneath the pile, the separated sheets being removed by a conveyer in a direction at right angles to the direction of movement of the chain.