baber/WOPTO huggingface dataset:
Patent GB-569604-A (GB)
Title: Process for the production of p-acylamino-benzene sulphenamides
Filed: 1943-07-07
Abstract: p - Acylaminobenzenesulphenamides are obtained in improved yields by interaction of amino compounds of defined type with p-acylaminosulphenyl chlorides obtained by (a) treating a suspension of the corresponding disulphide in ethyl acetate with less than three molecular proportions of chlorine per molecule of the disulphide; (b) treating with chlorine a solution or suspension of a 4 : 41-di-(carbalkoxy)-diphenyl disulphide in a non-aqueous medium, such as chloroform, carbon tetrachloride or ethyl acetate.  Amine compounds applicable are ammonia primary amines, acylated or not, secondary amines and cyclic imines, e.g. methylamine, ethylamine, n-butylamine, amylamine (n-, sec.- or iso-), n-octylamine, aniline, toluidine (o-, m- or p-), a - or b -naphthylamine guanidine, a -phenylguanidine, 2-aminopyridine, aminoquinolines, aminoisoquinolines, 2-aminopyrimidine, 2-amino-4 : 6-dimethyl-pyrimidine, 2 - aminothiazole, 2 - amino - 4 - methyl - thiazole and its N-acetyl derivative, 2-aminobenzthiazoles, piperidine and morpholine.  In examples: (1) 2 - (41 - acetylaminobenzenesulphenamido) - pyridine is obtained by triturating 4 : 41-di-(acetylamino)-diphenyldisulphide with dry ethyl acetate and treating for 1 hour at 15 DEG  C. with 1 molecular proportion of chlorine dissolved in carbon tetrachloride, adding the resulting solution of the sulphenyl chloride to 2-aminopyridine in ethyl acetate at 10-15 DEG  C. and standing for 2 hrs.; the product may be oxidised to the corresponding sulphonamide as described in Specification 551,206; (2) 2-(41-carbethoxyaminobenzenesulphenamido) - pyri - dine is obtained by treating a stirred solution of 4 : 41-diaminodiphenyldisulphide in benzene with ethyl chloroformate in presence of soda ash, refluxing for 1 hour, chlorinating the resulting 4 : 41-di-(carbethoxyamino) - diphenyldisul - phide in chloroform at 5-10 DEG  C., dissolving the residual oil in dry ether and adding to a stirred ethereal solution of 2-aminopyridine at 10-15 DEG  C., prior to treatment with N-sodium hydroxide solution; the product, on oxidation in acetone solution with potassium permanganate, yields 2 - (41 - aminobenzenesulphon - amido) - pyridine.  Specifications 551,205, 551,207, 551,681, 553,269 and 564,659 also are referred to.
Patent GB-224462-A (GB)
Title: Improvements in grates
IPC: F23H1/02
Filed: 1924-05-05
Abstract: 224,462. Cronin, F. C., and Hoffman, J. A. May 5, 1924. Grates.-A grate for furnaces or stoves is provided with means whereby the air for combustion is heated and the grate kept cool and comprises a number of fuel-supporting plates 5 provided with groups of diverging apertures 11 which extend partly through the plates 5 and communicate with depending bell-mouthed tubes 10 fitted into the undersides of the sections 5. The latter, which are formed on the lower surface with ribs 8, divide the combustion chamber 2 from a lower chamber 4 to which air under pressure is supplied through one or more pipes 6 having upwardly inclined outlets 7 to divert the air on to the under surface of the sections 5 and around the tubes 10 and ribs 8.
Patent GB-455766-A (GB)
Title: Improvements in or relating to excavating machines
IPC: E02F3/64
Filed: 1936-04-17
Abstract: 455,766. Excavating. MENCK & HAMBROCK GES., 78, Gr. Brunnenstrasse, Altona, Hamburg, Germany. April 17, 1936, No. 11058. Convention date, April 18, 1935. [Class 68 (i)] An excavator comprises a frame 1 drawn by a tractor &c. and carrying a scoop 2 with rear pivots adapted to be held in seats 5 by hooks 6, and front pivots 4 adapted to be held by hooks 8 controlled by toggles 9. Hydraulic jack cylinders 11 are pivoted at 10 to the scoop and their piston rods 12 are pivoted at 13 to the frame and are hollow for supply of fluid through pipes 14 to the cylinders. For digging, hooks 8 are freed and the front of the scoop lowered, stops 15, 16 limiting the movement; at intervals, the scoop is raised to the position of Fig. 3 to move the spoil rearward in the scoop. For transport, the scoop is held as in Fig. 1. For dumping, hooks 8 are engaged and hooks 6 are freed and the jacks are operated to raise the rear of the scoop. Hooks 6, 8 may have common control means.
Patent GB-898852-A (GB)
Title: A method of quick nitrification in which fluidised particles are employed
Inventor: TANAKA YUKIO
IPC: C23C8/36
Filed: 1960-03-29
Abstract: 898,852. Cementation. TO-A KAKA KABUSHIKI KAISHA. March 29, 1960 [Sept. 15, 1959], No. 11096/60. Class 72. A method of nitriding steel comprises immersing a steel article in a fluidised bed of a solid nitriding agent, a nitriding gas being used as the fluidising medium, and subjecting it to a spark discharge from electrodes, the electrodes being at a positive potential with respect to the article, for a time sufficient to form a nitrided layer on the article. As shown the article 5 may be suspended in a bed of barium cyanide fluidised by nitrogen or ammonia passing through a microporous plate 2, and a spark passed between electrodes 4, 4<SP>1</SP> and the article. The spark may be obtained by a direct current or a pulsating direct current, the electrodes being connected to the positive pole of an electrical supply and the article to the negative pole.
Patent GB-1104100-A (GB)
Title: Making electrical cables and the like
IPC: H05K3/02
Filed: 1965-03-16
Abstract: 1,104,100. Flat cables; printed circuits. ROGERS CORPORATION. 16 March, 1963 [16 March, 1964], No. 11123/65. Headings H1A and H1R. A flat flexible multiple conductor cable is produced continuously by etching metal foil supported on an insulating resin film to form a plurality of parallel conductors and superimposing on the exposed conductors another insulating film. As shown in Fig. 1, copper foil 15 is kiss-coated on one side by contact with drum 17 which is partially submerged in resin solution in tank 10 and the coated foil heated in tower 19 to evaporate solvent and to cure the resin. Parallel strips of etch resist are deposited at 20 by e.g. silk screening or photoprinting and the unmasked metal removed in etching bath 20 containing, e.g. hot ferric chloride. The resist is removed by trichloroethylene in tank 13 and the foil, water-washed in tank 14, is passed through resin solution in tank 11, solvent is removed and the resin cured in heated tower 23. Alternatively, as illustrated by Fig. 3 (not shown), the foil is coated on both sides with resin solution and the cured resin stripped from one side which has been initially treated with a release agent. After etching, a preformed film, which may be that removed previously, is coated on one side with an adhesive such as a phenolic nitrile and contacted with the exposed conductor surfaces between heated pressure rolls. The flexible resinous material is preferably an aromatic polyimide, particularly a polyamide-imide as described in Specification 935,388, in which case the resin solution may be a polyamic acid precurser. Films of polyester, polyethylene, polyvinylidene fluoride, polyvinylidene chloride, PVC, polycarbonate, P.T.F.E. and P.C.T.F.E. may be used. Other suitable etchants are ammonium persulphate and nitric acid or, in the case of an aluminium foil, 50% H 2 SO 4  or concentrated HCl.
Patent GB-413090-A (GB)
Title: Improvements in and relating to methods of operating electric discharge devices
IPC: H05B41/19
Filed: 1933-04-13
Abstract: 413,090. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (Assignees of Forney, J. D. ; 13, Hedges Avenue, Chatham, New Jersey, U.S.A.) April 13, 1933, No. 11152. Convention date, April 18, 1932. [Class 39 (i).] Means for protecting the thermionic cathode of a gas-filled device comprise two auxiliary anodes adjacent the cathode and connected to a source of alternating-current to an intermediate point of which the cathode is also connected, and means responsive to the resulting full-wave rectified current to initiate the main discharge after the cathode has become sufficiently hot to ensure that it will not be damaged. In one form, Fig. 1, anodes 3 of a lamp 1 are excited from an autotransformer 11 to the centre point of which the cathode 2 is connected through an inductance 13. Auxiliary anodes 9, 10, which may be tungsten rods sheathed in glass to a point near their tip are connected to a secondary 16 to the centre of which the cathode 2 is connected through a shifter 15 operated by inductance 13. The arrangement is such that when the current from the cathode to anodes 9, 10 has reached a safe value, e.g. one-third of the normal, the inductance 13 breaks the circuit at the shifter 15 and the resulting voltage surge starts the main discharge. The lamp may be filled with neon or mercury at a pressure of from 0.5 to 4.0 mm. In a modification, the anodes 3 are replaced by a thermionic electrode and alternating current is applied to this electrode and the cathode.
Patent GB-454958-A (GB)
Title: Improvements in and relating to the preservation of rubber
IPC: C08K5/18
Filed: 1935-04-10
Abstract: The oxidation of rubber is retarded and its resistance to flex-cracking increased by the incorporation in the mix of a 4 : 4<1>-dialkoxy-N-alkyldiphenylamine.  The aryl rings may carry one or more methyl substituents, and no alkyl or alkoxy group may have more than six carbon atoms.  The compounds may be made by alkylating the corresponding 4 : 4<1>-hydroxy compounds. Compounds mentioned are: 4 : 4<1>-dimethoxy-N-methyl diphenylamine; made by methylating with dimethyl sulphate 4 : 4<1>-dihydroxy-diphenylamine.  4\: 4<1>-Dimethoxy-3 : 3<1>-dimethyl-N-methyldiphenylamine; made similarly from 4 : 4<1>-dihydroxy-3 : 3<1>-dimethyl-diphenylamine, and 4 : 4<1>-diethoxy-N-ethyl-diphenylamine; made by ethylating with ethyl bromide 4 : 4<1>-dihydroxydiphenylamine.  It is also stated that 4 : 4<1>-dihydroxy-3 : 3<1>-dimethyldiphenylamine may be made by oxidizing molar quantities of 5-amino-2-cresol and o-cresol to an indophenol with sodium hypochlorite, and then reducing the indophenol with sodium hydrosulphite.  4 : 4<1>-Diethoxy-N-ethyldiphenyl-amine is made by adding ethyl bromide slowly to a boiling alkaline solution of 4 : 4<1> - dihydroxydiphenylamine in aqueous alcohol.ALSO:The oxidation of rubber is retarded and its resistance to flex-cracking increased by the incorporation in the mix of a 4 : 41-dialkoxy-N-alkyldiphenylamine, the aryl rings of which may carry one or more methyl substituents, and in which no alkyl or alkoxy group may have more than six carbon atoms.
Patent GB-838527-A (GB)
Title: Improvements in or relating to the separation of solid undesirable matter or particles suspensions
IPC: D21D5/18
Filed: 1958-04-09
Abstract: 838,527. Centrifugal separators. SOC. D'EQUIPMENTS INDUSTRIELS ET LAITIERS. April 9, 1958 [April 24, 1957], No. 11240/58. Class 23. Apparatus for separating impurities from a liquid or suspension comprises a tank 3 in the outlet of which rotates a bladed rotor. The liquid or suspension upstream of the rotor is spun by the rotor, and the impurities are flung to the periphery of the tank from which they are periodically discharged through an outlet 8. The apparatus is arranged at the inlet of a machine 2 for treating paper pulp, and the rotor is attached to the shaft of the machine. The tank may be cylindrical and may have inlet and outlet coaxial with each other but eccentric with the tank. Dimensions are given in the Specification.
Patent GB-1058742-A (GB)
Title: An electrical code modulation system
IPC: H03M3/02
Filed: 1964-03-17
Abstract: 1,058,742. Selective signalling. HITACHI SEISAKUSHO KABUSHIKI KAISHA. Mareh 17, 1964 [March 18, 1963], No. 11270/64. Heading G4H. [Also in Division H3] In a pulse code communication system pulses are transmitted continuously their density corresponding to the amplitude of the encoded signal. Encoding is effected by examining the integral of the input signal. Each time it exceeds a reference level an output pulse is produced and, at the same time, a reference potential is subtracted from the input signal. The comparison is effected by a tunnel diode, the reference level being inherent in its characteristic. Thus, Fig. 1(a), the integral of an input signal 11 is applied to a tunnel diode ED to which alternately positive and negative sampling pulses (31) (Fig. 3, not shown) are also applied (13). Normally the diode is in its high current condition 24, Fig. 2. As the output (33) (Fig. 3, not shown), of the integrator rises there comes a time when the application of a positive sampling pulse causes the diode to switch to its low current condition. This causes a fall in potential across its cathode load, and hence an output pulse 14, and also drives the input to the integrator negative via the feedback loop R 12 . The result is that while the diode is in its low current condition the integrator output falls. However, the circuit is so arranged that the next negative sampling pulse (31) always switches the diode back to its high current state, whereupon the integrator output begins to rise again, the rate of rise depending upon the magnitude of the input signal. Thus a train of output pulses can be obtained from terminal 14, each one of which corresponds to one of the positive sampling pulses, and the density of which corresponds to the magnitude of the input signal. A detailed circuit is described (Fig. 4, not shown) using mesa transistors and a Miller integrator.
Patent GB-1221123-A (GB)
Title: Improvements in production of shaped articles, such as filaments, from polyamides by melt spinning
Inventor: SIMONS FRANK H
IPC: C08G63/78
Filed: 1968-03-08
Abstract: 1,221,123. Melt spinning polyamides. FIBER INDUSTRIES Inc. 8 March, 1968 [9 March, 1967 (3)], No. 11297/68. Heading B5B. An apparatus for the production of filaments, films &c. by melt extrusion of polyamides and in which vapour evolved from the heated polymer is carried away by a stream of inert gas comprises a feed hopper 10 for chips of the raw polymer, a heater tube 11 and a polymer melter 12. The flow of chips from hopper 10 is controlled by valve 13 situated in the throat 14 leading to the heater tube 11. The heater tube 11 has four heating zones 15 to 18 heated by electrical strip heaters 19 to 22 respectively, a heat insulating jacket 23 surrounding the assembly. Current supply to the strip heaters is through conventional controllers 24 to 27 and the temperature at five points along the tube 11 is measured by thermocouples 28 to 32. Instead of electrical strip heaters the tube 11 may be heated by circulation of a heating fluid through a jacket surrounding the tube. Polymer chips coming from tube 11 pass through conduit 33, connected to tube 11 by expansion joint 34, into the polymer melter 12. The melter has screw feed 36 rotated by motor 37 for feeding the polymer chips on to a melting grid 38 heated, like the melt chamber 39 containing it, by a heat transfer liquid to a temperature which, in the case of polyhexamethylene adipamide, may be between 280‹ and 305‹ C. The molten polymer passes through the melting grid 38 and the spout 40 and forms a pool 41 of molten polymer under a blanket of inert gas introduced through inlet 42, the pool being kept stirred by agitator 43. The molten polymer is fed by a spinning pump to a spinneret in the usual manner. In using the apparatus polyamide chips having a relative viscosity of less than 50, for instance, down to 45, and containing, for example, 0-5 to 1À5% water, are fed into feed hopper 10 and thence to tube heater 11. The chips, heated during their passage through the tube, lose water which is removed by a stream of inert gas which is passed into chip melter 12 through inlet 44 and an annular manifold which contains a number of outlets for the gas and is located between screw 36 and grid 38. The gas escapes into the atmosphere carrying with it water vapour through hopper 10. The gas supplied can be at room temperature or may be heated, e.g. to 170‹ C. or somewhat higher. Upon melting, further polymerization proceeds very rapidly with the liberation of water, and the relative viscosity of the polymer rises to a value which depends on the proportion of water removed during drying and which may be 55 to 65. Values of relative viscosity are determined at 25‹ C. in aqueous formic acid containing 90% by weight of formic acid. The relative viscosity is the ratio of the absolute viscosity of a polymer solution in this solvent containing 8À4% by weight of the polymer to the absolute viscosity of the solvent.
Patent GB-1402318-A (GB)
Title: Refractory heat insulating materials
IPC: C04B35/66
Filed: 1972-03-10
Abstract: 1402318 Thermal insulation FOSECO INTERNATIONAL Ltd 5 March 1973 [10 March 1972 7 June 1972] 11362/72 and 26655/72 Addition to 1264022 Heading F2X [Also in Division B5] A method of making a shaped refractory heat insulating article, e.g. a gas turbine casing liner having exterior surfaces which are harder and of greater density than the interior comprises forming a green compact from an aqueous slurry of refractory fibres and inorganic binder, drying the compact in a first drying step, impregnating the dried compact with further binder (which may be different from the first binder) and drying the compact in a second drying step; one of the drying steps is "homogeneous" and does not cause migration of the binder, e.g. microwave or dielectric heating, and the other drying step is "non-homogeneous", e.g. hot air drying. The homogeneous drying step is preferably performed first. The strength of the product is further improved by a final heating step at 300-900‹ C. for “-24 hours. Refractory fibres which may be used include aluminosilicate, calcium silicate, asbestos, alumina, silica, zirconia, boron nitride, silicon carbide, steel, Nimonic alloy, or carbon fibres or a mixture of these. The inorganic binder may be colloidal alumina or silica sol., ethyl silicate, sodium silicate, potassium silicate, metallic phosphate or borate or a mixture. In addition, a particulate refractory filler such as alumina, silica, kieselguhr, silicon carbide, silicon nitride, fire clay or calcined rice busks may be used. The proportions used are refractory fibre 25- 60%, binder 40-70%, filler 0-40%.
Patent GB-1118793-A (GB)
Title: Improvements in or relating to pitot-static probes
Inventor: NEWPORT STANLEY BERNARD
IPC: G01P5/165
Filed: 1965-03-17
Abstract: 1,118,793. Measuring fluid-new. SMITHS INDUSTRIES Ltd. March 15, 1966 [March 17, 1965], No.11399/65. Heading G1R. In a pilot-static probe in which an intermediate portion 5 connects a forward and rear portions 3, 5 and has an increasing cross-section in the rearward direction, one or more static pressure sensing ports 26, 27 are provided within the region of the forward end to just beyond the rear end of the intermediate portion 5. The ports 26, 27 are arranged in pairs and approximately 37À5 degrees on each side of a vertical centre line. The probe is electrically heated throughout its length.
Patent GB-542664-A (GB)
Title: Improvements in magnetic separators
IPC: B03C1/28
Filed: 1940-07-10
Abstract: 542,664. Magnetic separators. VEGLIO, F. E. July 10, 1940. No. 11522. Addition to 523,205. [Class 72] In the inductor for magnetic separators described in the parent Specification each of the blocks of which the are-shaped magnets are composed has such dimensions that its length in the direction of the magnetic axes is equal to or greater than the square root of the area of the section of the block in a plane perpendicular to the said direction.
Patent GB-197177-A (GB)
Title: Improvements in casting machines
IPC: B22D13/10
Filed: 1922-04-25
Abstract: 197,177. Clow, W. E. April 25, 1922. Casting - machines; metal-pouring; moulds.-Relates to centrifugal casting-machines and consists in a special arrangement of mould and pouring- device. The metal mould 4 rests on rollers 5 in a fixed casing 3 in which it is further supported by ball-bearings 7 associated with labyrinth packings 8 to provide for water cooling at 31, 32. A sand &c. core 10 is secured in place by wedges 11. The pourer is joumalled at 18, in a carriage traversable on rails 12, and is rotatable by worm gearing 19. The pourer projects through the mould and is bevelled at 22 to facilitate engagement with a roller-steady 23 mounted to swing aside during the removal of the casting. Metal is introduced at 28 and flows into the mould on rotation of the pourer at a number of spaced points determined by individual pouring lips 27. A high lip 29 prevents spilling of metal at the filling orifice.
Patent GB-103779-A (GB)
Title: Improvements in Portable Gramophone Instruments.
Inventor: NEGAL MORRIS
IPC: G11B25/04
Filed: 1916-08-16
Abstract: 103,779. Negal, M. Aug. 16, 1916 Cases; turntables; h o r n s , arranging and supportang.-The horn of a portable gramophone i s mounted in the lid of the casing by a universal joint at its larger end, and when out of use is completely housed within the lid; and the turntable has hinged flaps to fold over towards the centre when not in use. Fig. 1 is an elevation with the lid open and the horn swung into the lid, and Fig. 2 is a plan view with the horn in playing position The horn d is of rectangular cross-section carrying the sound-box d<2> at its smaller end, and is hinged at its larger end to a plate e, which can turn around a vertical pin e<1> mounted in a bracket a<3> in the lid a<2>. When not required, the horn is swung upwards about its horizontal hinge, and a pin d<1> on the small end of the horn snaps into a hole in a spring f. The turntable b has pivoted flaps b<1>, b<2> which are folded over when the machine is not in use. in the modification shown in Fig. 3, the horn d and sound-box d<2> are supported on hooks a<4> in the lid 'by means of an eye d<3> and a staple or slotted member d<4>. When out of use, the horn is detached from the hooks and is laid in the lid.
Patent GB-698760-A (GB)
Title: Improvements in the coating of iced confectionery and ice-creams
IPC: A23G9/24
Filed: 1951-05-17
Abstract: 698,760. Coating ice creams and the like; cocoa preparations. GLACES GERVAIS. May 17, 1951 [March 31, 1951] ,No. 11589/51 Classes 28 (i) and 129. Ice cream or the like is coated in an aqueous solution comprising one or more of the hygroscopic compounds glucose, levulose and glycerine and a thickening agent, e.g. pectin, at about 0‹ C. The coating may be chocolate, orange or coffee flavoured and may contain milk powder, almond powder, hazel nut powder or preserved fruits. Three examples of suitable compositions are given. Example 1:- Glucose ... ... 15 -25 per cent Cocoa ... ... 6 -10 per cent Milk powder ... 4 - 8 per cent Pectin ... ... 0.1-0.3 per cent Water ... ... 74.9-56.7 per cent After coating, the ice cream bar may be put in a refrigerating tunnel at a temperature of between -30' C. and -20‹ C. The coated bar 1 is covered by a strip 4 of paraffin or sulphur paper and placed in a bag 3.