baber/WOPTO huggingface dataset:
Patent GB-597478-A (GB)
Title: A process for the manufacture of new acid dyestuffs of the anthraquinone series
IPC: C09B1/52
Filed: 1945-08-21
Abstract: Dyes are made by condensing 1.4-disubstituted anthraquinone derivatives, wherein at least one of the 1.4-substituents is halogen, alkoxy, hydroxy, or amino, and which contain in position 6- and/or 7 at least one halogen atom, with primary amines of the formula H2N.CHXY, where X is aralkyl and Y is alkyl or aralkyl, and sulphonating.  The anthraquinone derivatives may be leuco compounds, in which case oxidation should precede sulphonation.  Other aliphatic or aromatic amines may be present. Anthraquinone derivatives specified are 6- chlorquinizarin, 6.7-dichlorquinizarin, 1.4-diamino-6-chlor, or 6.7-dichloranthraquinone, 1.4-hydroxy-amino-6 or -7-monochlor- or -6.7-dichlor-anthraquinone, 1.4-aminophenylamino-6- or 7-mono- or 6.7-dihalogenanthraquinone, 1.4-amino-methylamino-6- or 7-mono- or 6.7-dihalogenanthraquinone, 6-bromquinizarin, 6.7-dibromquinizarin, 6.7-chlorbromquinizarin, 6-brom-1.4-hydroxy-aminoanthraquinone, or the leuco derivatives of these compounds, 1.4.6-trihalogen- or 1.4.6.7-tetrahalogen-anthraquinones, 1-amino-2.4-dibrom-6-chloranthraquinone, 1-methylamino-4-brom-6-chlor- or 6.7-dichlor-anthraquinone, 1-amino-2-methyl-4-brom-6-chlor- or 6.7-dichloranthraquinone, 1-phenylamino-4-methoxy-6-chlor or 6.7-dichloranthraquinone, 1-cyclohexy-1 amino-4-brom-6-chlor- or 6.7-dichloranthraquinone, 1-hydroxy-2.4-dibromo-6-chlor- or 6.7-dichloranthraquinone. Unreduced anthraquinones may be used in presence of reducing agents such as zinc dust, sodium hydrosulphide, or stannous chloride.  Amines specified are a -phenyl-b -aminopropane, a -phenyl-b -aminobutane, a g -diphenyl-b -amino-propane, a -phenyl-g  - aminobutane, a g  - di(p - methylphenyl) - b  - aminopropane, a -p-chlorphenyl-b -aminopropane.  The condensation is carried out at 80 DEG -160 DEG C. in presence of excess amine or of a solvent such as pyridine, ethanol, amyl and butyl alcohols, methyl hexaline, cyclohexanol, phenol, or cresol. Acid-binding agents such as sodium or potassium acetates or carbonates, or calcium carbonate, a copper catalyst, and in the case of leuco compounds, boric or acetic acid, may be present. Oxidation may be effected by air in presence of sodium hydroxide, pyridine, piperidine, or copper acetate, in a solvent such as aniline, nitrobenzene, ethanol, amyl alcohol, butanol, or methyl-hexaline.  Sulphonation may be effected with sulphuric acid, oleum, or chlorsulphonic acid.  The dyestuffs dye wool, silk, and nylon blue to green shades.  An example describes the condensation of leuco-6-chlorquinizarin and a g -diphenyl-b -aminopropane, and refers to various other combinations of the starting materials listed above. Specifications 491,493 and 515,185 are referred to.
Patent GB-1347353-A (GB)
Title: Oxidative dehydrogenation using ferrite catalysts
IPC: C07C5/56
Filed: 1971-04-19
Abstract: 1347353 Oxidative dehydrogenation PETROTEX CHEMICAL CORP 19 April 1971 [2 March 1970] 21388/71 Heading C2C [Also in Division C5] Organic compounds are oxidatively dehydrogenated in the presence of a catalyst comprising a metal ferrite having added thereto a modifier containing Co and/or Ni in amount no more than 8 wt. per cent based on the weight of solid ferrite and any uncombined iron oxide. The reaction may be effected at 375-800 C. optionally in the presence of Cl 2 , Br 2  or I 2 . Specific reactions listed are:-propionitrile to acrylonitrile, propionaldehyde to acrolein, ethylchloride to vinylchloride, methyl isobutyrate to methyl methacrylate, chlorobutanes or chlorobutenes to chloroprene and ethyl pyridine to vinyl pyridine.
Patent GB-1414411-A (GB)
Title: Electric lamp and base therefor
IPC: H05B41/22
Filed: 1973-05-04
Abstract: 1414411 Metal-vapour lamps GENERAL ELECTRIC CO 4 May 1973 [5 May 1972] 21393/73 Heading H1D [Also in Division H2] A cap for a ballasted arc discharge lamp comprises a metallic shell 26 with an end contact 25 and four diodes D1-D4 interconnected to form a rectifier bridge. The shell is screwed on to a glass jacket 2 and has an aperture in its in end in which two diodes D3, D4 are mounted aligned with the plane of the aperture and brazed or soldered to the shell. The diodes D1, D2 extend perpendicular to the plane of the aperture outside the shell where they are connected to the end contact. The diodes are glass encapsulated and capacitors C1, C2 are connected in parallel with diodes D3, D4. The diodes and capacitors are potted in filled resin 29. In an alternative embodiment (Figs. 5, not shown) the diodes are in the form of semiconductor plates stacked in pairs with conductive foil (43, 44) interposed between the diodes of each pair and connected to the arc leads (45, 46), while the end cap has a raised central portion (47) with shoulders (48, 49) which bear upon the end face of each stack. In Fig. 6 (not shown) four interconnected chip diodes are embedded in a beryllium oxide. substrate. A mercury arc quartz tube 7 and an incandescent ballast filament 17 are mounted within the nitrogen filled jacket 2 by clamping bands 15, 16 welded to a rod 12 which is clamped at 14 to a dimple 13 of the jacket. Tungsten coil electrodes 8, 9 on the tube 7 are connected to wires 5, 6 which supply the bridge rectified output, the latter electrode being connected via the ballast filament 17 and the rod 12. A starting electrode 10 is connected to the rod 12 via a resistor 11. Heat reflector discs 21 shield the base and zirconium getter rings 22 are provided.  An inert gas such as argon at a pressure  below 100 torr, or metal halides, e.g. sodium  iodide may be added to the mercury in tube 7.
Patent GB-137088-A (GB)
Title: Improvements in or relating to the valves of internal combustion engines
IPC: F01L3/08
Filed: 1918-12-20
Abstract: 137,088. Skinner, G. H. Dec. 20, 1918. Valves.-To prevent leakage between the inlet or exhaust valve spindle and its guide, a soft or elastic conical washer f is fitted around the valve spindle and pressed against the end of the guide by an auxiliary valve-spring k. The washer f is supported in a holder g, and is conveniently formed of a series of felt rings as shown.
Patent GB-1084914-A (GB)
Title: Liquid fuel injection pumps
Inventor: ELLIS ARTHUR JOHN
IPC: F02M59/28
Filed: 1964-05-25
Abstract: 1,084,914. Fuel injection pumps. BRYCE BERGER Ltd. Aug. 18, 1965 [May 25, 1964], No.21427/64. Heading F1A. In a fuel injection pump temperature variations in the length of a toothed control rod, which cooperates with a toothed sleeve 20 to rotate the plunger 11 and vary the delivery of the pump, are compensated for by the variations in length of a metal strip 25 against which the plunger peg 19 is spring-loaded. In a multi-plunger pump the length and/or metal of the strip 25 are such as to compensate for the different effective lengths of a common control rod.
Patent GB-766136-A (GB)
Title: Coin counter and discriminator
IPC: H04M17/02
Filed: 1954-07-22
Abstract: 766,136. Automatic exchange systems. AUTOMATIC ELECTRIC LABORATORIES, Inc. July 22,1954 [Aug. 6, 1953], No. 21444/54. Class 40 (4). [Also in Group XVIII] In a paystation in which a coin deposited in its respective shoot produces a number of bursts of tone corresponding in number to its value, it is arranged that the output from the coin transmitter is effective to operate the coin identifier, but that of the voice transmitter is not. This is effected by connecting the output of the former over the simplex of the calling line to the identifier, whereas that of the latter is applied over the calling line itself and is ineffective on the simplex circuit. When the calling party at the pay station 2 initiates a call, the line finder 4 finds the line in well-known manner, and by operation of its switching relay extends the loop 50 to operate relay 10 of the coin circuit 100. Relay 30 pulls up in a local circuit, holds the switching relay, and connects high tension voltage to tubes A, B, C. Tube C conducts, whereupon relay 40 pulls up and brings up 60, which locks up. The noise currents produced by voice transmitter 35 produce equal and opposite voltages at the mid point of resistors 22 and 221 and thus are without effect on the grid of A connected thereto. Insertion of a nickel in the relevant shoot opens the coin springs CS5 shunting the dial springs 1 and tones including a 1200 c.p.s. tone are produced by the nickel striking a gong once. The currents thus produced in the coin transmitter 25 are applied over the simplex to the grid of A, amplified and applied to the right hand triode of B. The parallel T frequency selective network connected to the cathode of this triode greatly impedes currents of 1200 c.p.s., but other frequencies are fed back to the grid of A to reduce amplification of all frequencies other than 1200 c.p.s. The 1200 c.p.s. currents, however, are sufficiently amplified to reduce the current in tube C during the negative half-cycles to such an extent that the mean current in C falls to the point where relay 40 relapses. Relay 70 thereupon pulls up and releases 60. On cessation of the tone, 40 re-operates and brings up 80. As two nickels are required for a local call, no further action takes place at this time. On the deposit of a second nickel, the relapse of 40 brings up 90, whereupon 80 releases, and H.T. is disconnected from the tubes. Relay 90 also brings up 95 which switches the calling line through to the selector 9, and disconnects it from the coin circuit 100. Dial tone is reverted, and 95 is held under control of the seized selector 9. It is arranged that the deposit of a dime produces two bursts of 1200 c.p.s. tone which produce effects similar to those described for two nickels. U.S.A. Specifications 1,043,219 and 2,235,648 are referred to.
Patent GB-688057-A (GB)
Title: Improvements relating to stapling machines
Inventor: KENT EDWARD CHARLES
IPC: B25C5/02
Filed: 1950-08-31
Abstract: 688,057. Hand stapling-machines. L.M.K. MANUFACTURING CO., Ltd. July 10, 1951 [Aug. 31, 1950] , No. 21540/50. Class 89 (iii). In a hand stapling-machine in which the staple pusher 10 is urged forwardly by a coiled clock spring 11, the spring is carried by depending ears 19 on a cover-plate 16 which is secured to a spring housing by a single rivet 23 to facilitate replacement of a damaged spring. The spring spindle 20 is held against axial movement by the sides of the housing. Before being inserted in the housing it may be moved axially to disengage its square ends 20 from the ears 19 to permit adjustment of its tension. Specification 670,475 is referred to.
Patent GB-680871-A (GB)
Title: Improvements in or relating to the manufacture of electrically insulated wires and of coils or windings formed therefrom
IPC: H01B3/18
Filed: 1950-09-01
Abstract: 680,871. Insulated wires. PIRELLIGENERAL CABLE WORKS, Ltd., and WILLIAMS, C. F. July 31, 1951 [Sept. 1, 1950], No. 21608/50. Class 36. [Also in Group XXXV] An enamelled wire is provided with an outer coating of a solution of one or more thermosetting and/or thermo-plastic fusible synthetic resins having a heat-conducting filling material dispersed therein, and is then heated to drive off the solvent without rendering any thermosetting resin present infusible. The enamelled wire may be covered with a lapping of fibrous material such as cotton, silk, glass, asbestos or paper before the outer coating is applied. The heat-conducting filling material may comprise carbon black, a metallic oxide, or finely divided metal.
Patent GB-1378707-A (GB)
Title: Electromagnet sensor structure for magnetic cards
IPC: G06K7/08
Filed: 1972-05-10
Abstract: 1378707 Magnetic card sensor RUSCO INDUSTRIES Inc 10 May 1972 [17 May 1971] 21707/72 Heading G4M A sensor for magnetic spots on a card has a polepiece 26, an element 14 of saturable material of high permeability wrapped around a cylinder 12 of non-magnetic material and a coil 20 surrounding the element. A magnetic spot situated near the polepiece saturates the element and a pulse supplied to the coil either fully saturates the element and causes no readout or drives the element away from saturation depending on whether the fields of the spot or pulse aid or oppose each other.
Patent GB-971322-A (GB)
Title: Manufacture of 2,2-chlorofluoropropane
IPC: C07C17/10
Filed: 1963-05-30
Abstract: 2,2-Chlorofluoropropane is prepared by subjecting a gaseous mixture of one mole of isopropyl fluoride and at least one mole of chlorine in a reaction zone to actinic radiation for 0.5-200 seconds while maintaining the temperature in said zone below 150 DEG C. but high enough to retain the reactants in the gaseous phase.  The actinic radiation is preferably of wavelength 2,000-5,000 Angstrom units and is preferably supplied by an artificial light source. 3-Chloro-2-fluoropropane and 2,3-dichloro-2-fluoropropane are obtained as by-products. Examples are given.
Patent GB-124407-A (GB)
Title: Improvements in Apparatus for the Conversion of Direct Electric Currents to Alternating Currents.
Inventor: CAUWENBERGHE ROBERT VAN
IPC: H02M7/54
Filed: 1918-12-30
Abstract: 124,407. Cauwenberghe, R. van. Sept. 94, 1917, [Convention date] Commutator switching - arrangements. - Direct current is converted into three-phase current by end and intermediate connexions from the battery U to spaced points along a circularly distributed resistance R, and by rotating the three-phase brushes a, b, c over the resistance wire or over a commutator connected to the resistance wire. The resistances may be calculated so that the electromotive force curve is of sine form and the different parts of the direct current source be arranged to give the same average current.
Patent GB-217900-A (GB)
Abstract: 217,900. Soc. d'Electro-Chimie, d'Electro-MÚtallurgie, et des AciÚries Electriques d'Ugine. June 21, 1923, [Convention date]. Dry processes of recovering and refining tin; alloys.-Tin is recovered and iron removed from materials containing tin and iron, such as minerals, scoria, scrap, scum, hards, and liquation products, by introducing at any stage of the reduction an element or alloy such as silicon or ferro-silicon which will alloy with the iron but not with the tin. The iron alloy and the tin are obtained separately on cooling. A stanniferous ore may be reduced by means of ferro-silicon in excess, the expulsion of iron from the resulting iron-tin alloy being effected by the excess of ferrosilicon; or a silicon compound such as silica may be used along with a reducing agent such as carbon.
Patent GB-944067-A (GB)
Title: Return spring device for internal shoe-drum brakes
IPC: F16D65/08
Filed: 1961-06-16
Abstract: 944,067. Internal shoe-drum brakes. ROCKWELL-STANDARD CORPORATION. June 16, 1961 [June 17, 1960], No. 21803/61. Heading F2E. In an internal shoe-drum brake for vehicles two brake shoes 14, 16 are pivoted at adjacent ends 44, the opposite ends of the brake shoes are adapted to be moved outwardly against the brake drum 28 by means of an actuator (e.g. an S cam 22), and a generally U-shaped return spring 46 is provided to return the shoes to their inoperative positions. The U-shaped return spring 46 is provided with spaced legs 52, 54 operably connected adjacent their upper ends with pins 48, 50 mounted on the shoe webs 30, 32, the legs 52, 54 being stressed in the assembly to urge the actuated ends of the shoes towards each other. The ends of legs 52, 54 of the spring are of decreasing cross-section and may be tapered as shown in Fig. 5. The brake shoes are each provided with two spaced parallel webs 30, 30a and 32, 32a. the return spring 46 being located between the shoe webs. An aperture 72 may be provided in the brake shoe linings 15 and flanges 19 in alignment with the pins 48, 50 to allow entry of a hooked tool to remove the spring from the pins 48, 50.
Patent GB-184485-A (GB)
Title: An improved method of manufacturing apparatus for the emission of rays under the action of radiation
IPC: G21K4/00
Filed: 1922-08-10
Abstract: The Specification as open to inspection under Sect. 91 (3) (a) describes the refinement of crystalline catalytic agents by double sifting or other means, so that crystals between certain narrow limits of size only are retained for use, and the maximum possible regularity of catalytic action is ensured.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1515342-A (GB)
Title: Surface covering for printing press cylinder
IPC: B41N7/00
Filed: 1975-05-21
Abstract: 1515342 Rollers HEIDELBERGER DRUCKMASCHINEN AG 21 May 1975 [27 Sept 1974] 21827/75 Heading F2V [Also in Division B6] A sheet-supporting cylinder of a rotary printing press, e.g. an impression cylinder or a sheet-transfer cylinder, has a surface covering of a chemically resistant durable and hard material provided with domes of equal height distributed irregularly but in a statistically uniform arrangement; apart from improved impression characteristics, smudging of ink is avoided when freshly-printed sheets are in contact with the surface. Preferably, the covering is a sheet 1 of nickel foil which may be copper-backed, the domes 3 are integral with the foil; plastics foil may be an alternative or small balls of metal or plastics embedded in nickel foil. Typical dome heights are 0À02 mm. with a diameter of 0À1 mm. and a mean spacing of 0À12 mm. between adjacent centres; this spacing will vary between adjacent centres, but provide a uniform arrangement when considered overall statistically.
Patent GB-1441548-A (GB)
Title: Adjustable headrest and backrest for a chair electrically heated surgical cutting ins
IPC: A61G9/00
Filed: 1974-05-16
Abstract: 1441548 Combined head and backrest for a chair PELTON & CRANE CO 16 May 1974 [17 May 1973] 21881/74 Heading A4J A headrest 23 Fig. 2, is slidably contained in a recess formed between front 22b and rear 22a of a backrest, the headrest being arranged to bear on convolutely wound springs 35 in the backrest so as to unwind said springs as the headrest is retracted, and the springs rewinding to assist movement as the headrest is re-extended. The backrest is preferably provided with a guide rail 30 which engages a slot 23c in the headrest, the cover strip 23d preventing the headrest upholstery (not shown) from fouling said slot 23c. A clamp 40 Figs. 2 and 13, comprises a flange 45 engageable in slot 23c of the headrest, and lugs 43 engagable with recesses in the backrest 22. Eccentric rollers 47a are operated by lever 47 to either grip or release the headrest. The bearings 36, Fig. 2, for engaging the springs 35 are preferably of low friction plastics, and the unwound springs may serve as lateral bearing surfaces for the headrest. Switch boxes 25 may be used to control motorized adjustments of the chair.
Patent GB-1308125-A (GB)
Title: Method and apparatus of treating sludge
IPC: B01D21/00
Filed: 1971-04-19
Abstract: 1308125 Dehydration of sludge KURITA WATER INDUSTRIES Ltd 19 April 1971 [16 Feb 1970] 21882/71 Heading B1D Sludge, such as that obtained in the treatment of water or sewage, is dehydrated by supplying it through pipe 25 to the trough 13 of a filter apparatus where it is spread, from elongated orifices 19 in rotating distributors 21, onto a bed 7' of pulverized coal supported on a bed of coarse material such as gravel. The water passes through the bed, and is removed from outlets 8; and a layer of dehydrated solid is deposited on the surface of the bed 7'; but this deposit is scraped off, together with the surface layer of the bed of pulverized coal, by means of rakes 23. The mixture of dehydrated sludge and coal scrapings passes through outlet 24 into hopper 6 whence it is conveyed to an incinerator. Distributors 21 and rakes 23 are connected to screw shaft 11 which is rotated by motor M, and descends one pitch (2 mm.) per revolution. When the bed of coal gets thin, valve 29 is closed to discontinue the feed of sludge, shaft 11 is then made to ascend by reversing its rotation, and pulverized coal from tank 27 is fed to the bed by opening valves 30 and 31 whereupon the coal is distributed over the bed from orifices in pipe 17 which is attached to shaft 11. When a predetermined depth of bed is obtained, the valves are adjusted and the rotation of the shaft is again reversed so that the feed of sludge is resumed. When it is necessary to clean the apparatus, a backflow of water is introduced into outlets 8, and overflows into surrounding trough 32. Before it is spread on the bed, an ionic organic coagulant is preferably added to the sludge. Specified coagulants include cationized polyvinylpyridine salt, water-soluble polyethyleneimine, amine-epichlorohydrin polycondensate, aniline-formalin polycondensate, tars and pitches, and partially hydrolysed salts of polyacrylic acid, polyacrylamine and polyacrylonitrile.
Patent GB-639772-A (GB)
Title: Glass stirring and feeding
Inventor: DE VOE CHARLES F
IPC: B01F15/00
Filed: 1946-07-23
Abstract: 639,772. Glass stirring and feeding. CORNING GLASS WORKS. July 23, 1946, No. 21909. Convention date, Aug. 9, 1945. [Class 56] Molten glass from a supply body is introduced into one end of a substantially cylindrical space 12 at a rate to maintain the space filled despite withdrawal of glass from the other end, subjected to a continuous rotary stirring action which imparts a circular motion to the glass to attenuate the glass flowing along the cylindrical boundary of the space and a movement to at least a portion of the glass which is inward of the boundary to thrust it radially outwardly toward the boundary to increase the attenuation of the glass at the boundary, and removed from the other end of the space without contact with the glass entering the space at the first end. As shown in Fig. 1, glass is fed through the tube 11 to the cylinder 12 where it is stirred by the blades 32 whose edges are close to the cylinder wall, and passed to the feed tube 15 of calculated size, or alternatively to a needle controlled gob feeder. The apparatus is preferably made of refractory metal and heated at 13, 14 and 16. Three forms of stirrer are shown in Fig. 1, the shaft 31 has three spaced groups of blades 32, each group comprising two sets of three arcuate blades, the two sets being curved in opposite directions, and each blade strengthened by a segment 33. The segments 33 prevent creeping down the shaft, and the opposite actions of the two sets of blades in each group prevent creeping down the side wall. Fig. 6 shows a shaft 60 with six blades 61-66 at 30 degrees pitch and spaced spirally, blades 61, 63, 65 pump downwardly and blades 62, 64, 66 upwardly. In the embodiment shown in Fig. 8 the shaft 80 has a bottom disc 81 with downwardly directed curved vanes 82 to overcome shaft creeping, and the spaced groups of blades 83, 84, 85 each with three blades. Group 83 is at 45 degrees pitch, group 84 is larger and also at 45 degrees, and group 84, of the same size as 84, is at 30 degrees pitch. The rate of downward pumping is greater than the rate of flow from the outlet causing an upward flow near the cylinder walls.
Patent GB-597776-A (GB)
Title: Improvements in or relating to free-wheel driving mechanism
IPC: G05G5/26
Filed: 1945-08-27
Abstract: 597,776. Ratchet clutches; locking levers. COLLYEAR, J. R. Aug. 27, 1945, No. 21915. [Classes 80(ii) and 80(iii)] A free-wheel clutch or detent similar to that described in Specification 505,571 comprises two sleeves 2, 3, respectively free to rotate on and secured to a shaft 1, and surrounded by a spring 5 which has coils all of the same diameter and is surrounded by a release sleeve 8 having at one end a portion 9 of reduced diameter overlying a groove 4 in the sleeve 2. The sleeve 2 has integral with it a gear wheel 11 rotation of which in the direction to wind up the spring 5 results in a drive to the shaft 1, while rotation in the opposite sense allows the gear 11 to free-wheel relative to the shaft 1. Turning the outer sleeve 8 by means of an arm 10 in a direction to unwind the spring 5 disconnects the sleeve 2 from the shaft 1. Fig. 2 shows the device applied as a one-way detent for locking a vehicle hand-brake lever, the latter carrying a toothed sector 18 meshing the toothed wheel 11. Release is effected by depressing the centre button 22 acting on the release arm 10.