baber/WOPTO huggingface dataset:
Patent GB-981096-A (GB)
Title: Substituted 2-p-aminobenzensulphonamido-pyrazines
IPC: C07D241/22
Filed: 1961-09-29
Abstract: The invention comprises compounds of general formula <FORM:0981096/C2/1> wherein R is OCH3 or Cl; and (1) the preparation of 3,5-dichloro-2-p-aminobenzenesulphonamidopyrazine by treating 2,3,5-trichloropyrazine with sulphanilamide at from 80 DEG  to 150 DEG  C. in the presence of an acid acceptor, and (2) the preparation of 5 - chloro - 3 - methoxy - 2 - p - aminobenzenesulphonamidopyrazin either by treating the corresponding 3,5-dichloro compound with an alkali metal salt of methanol in methanolic solution at 40-120 DEG C. for 2-20 hours, or by condensing the corresponding 2-amino compound with a p-acylamino-benzene-sulphohalide in the presence of a tertiary-amine and subsequently hydrolysing with alkali the acyl group in the N4-position of the sulphanilamide group of the intermediate (e.g. 2-(p-acetylaminobenzenesulphonamido) - 5 - chloro - 3 - methoxy-pyrazine); also the preparation of 3 - methoxy - 2 - p - aminobenzenesulphonamido-pyrazine by catalytically hydrogenating the 5-chloro compound, prepared as above, in the presence of an acid acceptor; and the compounds so prepared.  Therapeutic compositions comprise a compound of, or obtained by a process of, the invention, together with a pharmacologically acceptable carrier.  The compounds have bacteriostatic activity.  Specifications 928,151 and 981,097 are referred to.
Patent GB-1291216-A (GB)
Title: Tool for compressing clips about flexible tubes
Inventor: RIDER GEORGE WILLIAM
IPC: B65B51/04
Filed: 1971-07-27
Abstract: 1291216 Tool for compressing Clips AMP Inc 27 July 1971 [26 Aug 1970] 35081/71 Heading B4W A tool for compressing clips about flexible tubes to close the tubes comprises handles 2 and 4 each having a jaw and a carrier 36 which can be advanced longitudinally of handle 2 and has notches 44 each for receiving a clip 46, the carrier being connected to handle 4 to cause the carrier to be advanced as the handles are opened. Handle 2 comprises plates 88 and has a groove 30 running its length with a further groove 32 running from the free end of the handel to point P. This groove 32 accepts flanges 38, 40 and 42 of the carrier. An arm 100<SP>1</SP> of spring 100 controls movement of the carrier by engaging in notches 58. Spring 100 is connected to pin 96 which extends through the handles and a slide 98. A pin 104 also extends through the handles and has a roller 106 at each end that engages in a slot 108 in flanged member 16. Jaw 8 has an anvil 64 which has a groove therethrough to accept the carrier. The surface of the anvil has recesses 70 to cause tabs 48 of the clips to be bent appropriately when the jaws are closed. A ratchet 112 co-operates with a pawl 114 to prevent the jaws being opened until they have been fully closed and vice versa. In operation closing of the jaws from the position shown in Fig. 2 causes slide 98 to be moved to the right due to the action of slot 108 on rollers 106 and thus pin 104. This also moves arm 100<SP>1</SP> rearwardly to the position shown in Fig. 4. On opening of the jaws carrier 36 initally remains stationary thus enabling the closed clip and tube to be removed from between the jaws. Further opening of the jaws causes arm 100<SP>1</SP> to engage end wall 60<SP>1</SP> of notch 58 and move the carrier forwardly. A C-clip 76 engages a flange 40 of the carrier and prevents rearward movement thereof.
Patent GB-1478494-A (GB)
Title: Anhydrous bases and salts of dyestuffs of the auramine series
IPC: C09B69/06
Filed: 1974-08-09
Abstract: 1478494 Anhydrous bases and salts of the Auramines PRODUITS CHIMIQUES UGINE KUHLMANN 9 Aug 1974 [10 Aug 1973] 35139/74 Heading C4P A process for the preparation of an anhydrous base or salt of a dyestuff of the Auramine series comprises isolating the base or salt in acetone, methylethylketone or diethylketone. Salts claimed per se are:- The hydrofluoride of the base of Auramine O. The phosphate of the base of Auramine O. The hydrobromide of the base of ethylauramine. The phospate of the base of ethylauramine. The hydrofluoride of the base of Auramine G. The phosphate of the base of Auramine G. The dyes may be used to colour paper, inks, textile fibres, leather or plastics materials, microbiological preparations or foodstuffs.
Patent GB-458396-A (GB)
Title: Improved method of incorporating colloidal fillers in bitumen, tar and similar substances
IPC: C08L95/00
Filed: 1935-06-20
Abstract: Molten tars or bitumens are added to colloidal dispersions of mineral matter in water at ordinary temperatures, or warmed, most of the water being subsequently evaporated by heating.  The mixture may be further kneaded and/or heated to control the softening point.  In an example, to 6 parts of bentonite and 50 parts of blue clay in aqueous dispersion is added 150 parts of coal tar.  The water is evaporated by heat, and the mixture kneaded and heated.
Patent GB-1188304-A (GB)
Title: Improvements in or relating to the Bittering of Beer
Inventor: LAWS DEREK ROY JAMES
IPC: C12C7/20
Filed: 1966-08-05
Abstract: 1,188,304. Hop extracts. BREWING PATENTS Ltd. 7 Aug., 1967 [5 Aug., 1966], No. 35278/66. Heading C2C. [Also in Division C6] The #-acids of hop concentrates, lupulone, colupulone or adlupulone, in light petroleum may be separated from the α-acids either by chemical reaction involving the formation with lead acetate of an insoluble lead salt of the α-acids (from which the free α-acids may be recovered by treatment with hydrogen sulphide or sulphuric acid) or by chromatographic separation. The hop oils are taken off in steam. According to an example, minced hops were twice extracted with methanol and the solvent removed leaving a green viscous residue. A portion of this residue was chromatographed on a strongly basic ion exchange synthetic resin (acetate) using methanol as eluting solvent to remove the pigments and hop oils. The solvent was changed to a mixture of methanol and glacial acetic acid (or formic acid) to elute the #-acids fraction. The (3-acids fraction was then eluted by increasing the proportion of glacial acetic acid in the mixture. The crude #-acid fraction was recrystallized from light petroleum, giving colupulone of m.p. 92‹ C. Oxygen was bubbled through a solution of colupulone in light petroleum for 10 hours, at room temperature. The oxidation products remained in solution. The solvent was evaporated off leaving a viscous, bitter product. A solution of the oxidation products of colupulone in ethanol was added to an unhopped beer so as to give a concentration of 45-50 p.p.m., i.e. within the broad range of from 25 to 70 p.p.m. It is stated that if the oxidation is carried too far, materials insoluble in the light petroleum will be formed.
Patent GB-427661-A (GB)
Title: Improvements relating to the manufacture of tapered metal tubes
IPC: B21C37/18
Filed: 1933-12-15
Abstract: 427,661. Tapering tubes. SERCK RADIATORS, Ltd., and GARNER, E., Warwick Road, Greet, Birmingham. Dec. 15, 1933, No. 35324. [Class 83 (iv)] In means for tapering thin tubes of round or polygonal section a mandrel tapered at the part a and parallel at the part a<1>, is radially slotted to house tapered flexible webs b secured at one end by a slotted sleeve e and nut d. The tube c is threaded over the webs which are shaped to engage the corners of the tube. Relative axial movement of the webs b and the mandrel a<1> forces the webs b radially outwards to effect a gradual expanding action over the length of the tube. The mandrel may consist of parallel sections separated by a ridge.
Patent GB-1533511-A (GB)
Title: Filter bags for suction cleaners
IPC: A47L9/14
Filed: 1977-08-23
Abstract: 1533511 Filter bag for suction cleaner VORWERK & CO INTERHOLDING GmbH 23 Aug 1977 [7 Sept 1976] 35384/77 Heading BIT A paper dust bag 1 for a suction cleaner has at its closed end 2 a reinforcing strip 3 tapered at outer edges 4 which protects and guides the end of the bag when it is inserted into an internally ribbed chamber of the cleaner. The strip may be in two parts embracing the folded end of the bag therebetween (Fig. 2 not shown).
Patent GB-815755-A (GB)
Title: Improvements relating to electric fencing standards and insulators therefor
Inventor: COLE FRANK STANLEY
IPC: H01B17/14
Filed: 1955-12-09
Abstract: 815,755. Rod joints. STOKES & SONS Ltd., J. March 8, 1957 [Dec. 9, 1955, May 14, 1956], Nos. 35464/55 and 14946/56. Class 99(1). [Also in Groups I and XXXVI] A coupling between two metal rods parts 1a, 1b of an electric fencing standard comprises an insulating body 9 having webs 11, longitudinal ribs 12, and bores 10 adapted to receive the ends of the parts.
Patent GB-1071794-A (GB)
Title: Improvements in or relating to sealed containers and to methods of and apparatus for testing for leaks therefrom
Inventor: HAYES DAVID JOHN
IPC: G01M3/22
Filed: 1964-08-31
Abstract: 1,071,794. Fuel elements. CENTRAL ELECTRICITY GENERATING BOARD. Aug. 26, 1965 [Aug. 31, 1964], No. 35622/64. Heading G6C. [Also in Division G1] In a nuclear reactor fuel element testing arrangement a radioactive gas, krypton-85, is sealed into the can with the fuel. The beta radiations from the krypton produce gamma rays at the aluminium sheath which are detected and used to indicate the quantity of krypton inside the element sheath. Leakage of krypton is determined by measuring the beta activity, due to escaped krypton, in the atmosphere external to the element. The gamma radiation is detected by a sodium iodide crystal mounted near the fuel element and the light from the crystal falls on a photo-multiplier tube. Krypton gas escaping from the fuel gas is collected in a chamber lined with an organic scintillator and viewed by a second photo-multiplier. To separate signals due to the fissile material from those due to the krypton, pulse height selection is employed.
Patent GB-1205345-A (GB)
Title: A device for measuring the azimuth angle of incidence of a beam of light
IPC: G01J1/42
Filed: 1968-07-25
Abstract: 1,205,345. Measuring the angle of incidence of a light beam. ERNST LEITZ G.m.b.H. July 25, 1968 [Aug.3, 1967; March 7, 1968], No.35645/68. Heading G1A. A device for measuring in one of two rectangular co-ordinates the azimuth angle of incidence of an almost parallel light beam comprises two reflecting surfaces facing towards and substantially parallel to each other so as to define a compartment through which the incident beam may be passed to be measured photo-electrically irrespective of variation in its angle of incidence in the direction normal to the parallel reflecting surfaces and the angle it is desired to measure. Light may be introduced by a convex lens 3, Fig. 1b, to a compartment comprising a block of glass, quartz, or plastics material, and the co-ordinate X to a point L on the back of the block may be measured photo-electrically by for example an arrangement which includes an electro-magnetically vibrated wire between the spot and the photo-cell. The position of the spot may be determined by the phase difference between the vibrating wire and the photo-cell output. A pair of additional photo-cells may be provided in the block itself and toward the back end to indicate the direction of spot displacement when it is outside the measurement area. A two-stage arrangement using a picture converter is described with reference to Fig.3 (not shown). A further arrangement, Figs.4a and 4b, comprises a stack of units each comprising two semi-circular blocks 15, 16 with the beam passing through a slit 17a in a diaphragm 17 in a common diametrical plane, to a photo-cell or reflecting surface on the rear face of the block 15. The photo-cells or reflecting surfaces of the block units are dimensioned and arranged to give a coded output of the angle of incidence. In the case of rear reflectors the beam may pass through a slit spaced from the common centre of curvature and be reflected to a photo-cell equally spaced on the other side of the centre. Filters may be used to exclude unwanted rays.
Patent GB-1333458-A (GB)
Title: Device for the leak-tight assembly of a heat-exchanger
IPC: G21C1/03
Filed: 1971-07-29
Abstract: 1333458 Cooling reactors COMMISSARIAT A L'ENERGIE ATOMIQUE 29 July 1971 [7 Aug 1970] 35653/71 Heading G6C In a sodium cooled, fast reactor, the core and heat exchangers are supported by a primary vessel within a main vessel and the joint through which the exchanger penetrates the primary vessel wall is provided with a leaktight seal while permitting radial and axial displacements due to temperature and pressure variations. The reactor core, 30, is cooled by the upward circulation of liquid sodium which passes downwards through the exchanger 4 and into the pump 31. The exchanger extends through an aperture in the wall, 5, of the primary vessel, 2, and is provided with a leaktight joint by the annular siphon 7, 8. To effect leak-tightness, the siphon is maintained unprimed by the injection of argon into the upper portion of the siphon. The supply of argon to the siphon is effected automatically in response to the pressure differential between the siphon argon atmosphere and the reactor gas blanket.
Patent GB-921426-A (GB)
Title: Improvements in de-waxing lubricating oils
Inventor: LIVESLEY WILLIAM GORDON
IPC: C10G73/06
Filed: 1960-10-18
Abstract: The filterability of wax slurry in lubricating oil dewaxing plants is improved by recycling a slurry of wax crystals from the chilled filter feed directly into the feed to the chilling zone in proportions of from 0,25 to 2,0 volume per cent based on the total composition.  Preferably the recycled slurry contains from 5 to 50 weight per cent of wax crystals.  In examples propane and butyl acetate were employed as dewaxing solvents.
Patent GB-1146216-A (GB)
Title: Apparatus for enlarging paper patterns
IPC: A41H3/00
Filed: 1967-08-03
Abstract: 1,146,216. Artists' appliances. P. MENZ. 3 Aug., 1967 [8 Aug., 1966], No. 35687/67. Heading B6P. [Also in Division G2] Apparatus for enlarging paper patterns comprises a frame 3 bearing a plate of clear glass on which the pattern is mounted, a frame 1 bearing a plate of diffusing glass parallel to the clear plate, and a light source 4 for projecting the outline of the pattern on to the diffusing glass, frame 3 being horizontally.adjustable on rails 2 .to control the degree of enlargement of the pattern. -The enlarged outline may be manually traced on to the diffusing glass, or recorded; on photosensitive paper, in which case ultra-violet light is used. Frame 3 tilts about axis 6 to facilitate mounting of the pattern. The recording paper is stored in holder 8.
Patent GB-485488-A (GB)
Title: Improvements in rotary supercharging blowers
IPC: F04C18/344
Filed: 1936-12-30
Abstract: 485,488. Rotary blowers. ELLOR, J. E. Dec. 30, 1936, No. 35708. [Class 110 (ii)] A multi-casing blower has a rotating sleeve valve E containing slots F in its periphery which co-operate with the blower delivery ports and receive the compressed mixture. The latter passes off axially to an internal-combustion engine which drives the rotors and sleeve by external gear-wheels. The casing, or casings B, may be limaþon-shaped having a single vane C<3> sliding through a rotor C<2> to drive fluid from an inlet C to an outlet C<1>. The vanes may be kept clear from the casings by means of rollers on their ends, or they may be secured to a crank or eccentric. A flap G<1> on each inlet port may be hinged outwardly to vary the size of the ports or a flexible member G<3> may be caused to slide circumferentially.
Patent GB-788826-A (GB)
Title: A device for heating fine granular solid material
IPC: F27B7/20
Filed: 1955-12-13
Abstract: 788,826. Preheating and charging cement raw materials. KLOCKNER-HUMBOLDTDEUTZ AKT.-GES. Dec. 13, 1955 [Dec. 13, 1954], No. 35773/55. Addition to 703,951. Class 51 (2). In apparatus according to the parent Specification for preheating cement raw material and feeding it to a rotary kiln 5, the vertical centre line A-A of the waste gas tube 6, and the vertical centre line of the last cyclone separator 1 are disposed some distance from and on opposite sides of the vertical axial plane B-B of the kiln, so that the separator and the whole preheating installation can be disposed at a lower level. The lower end 23 of the tube 6 opens at such an angle into the rear end of the kiln that any dust deposited therein slides into the kiln. The discharge pipe 36 also extends from the separator 1 to the kiln at at least the angle of repose of the charge material. The tube 6 opens into the separator with an elbow 33 having a lower wall 32 inclined at an angle to said separator. All the separators, Fig. 1 (not shown), are so arranged that their vertical centre lines lie in a vertical plane at right-angles to the aforementioned vertical axial plane B-B.
Patent GB-1125975-A (GB)
Title: Improvements in and relating to measuring devices
Inventor: LOTZE WERNER
IPC: G01B13/08
Filed: 1966-08-11
Abstract: 1,125,975. Determining dimensions. MASSINDUSTRIE WERDAU VEB. Aug. 11, 1966, No. 36022/66. Heading G1M. A measuring device for measuring the diameter of a moving workpieces 4 having an interrupted surface by means of a sensor 2, 3 comprises a sensor 2, 3 slidably disposed in a casing 1 for movement against the action of a spring 8 or against its own weight by means of a pressure medium, the sensor comprising a sensing tip 3 at one end and having a passage 10 which ends in outlet apertures adjacent the sensing lip for the pressure medium and is also connected directly or through a pressure amplifier with means 13 for locking the sensor in the casing at times when a workpiece surface is not within a predetermined proximity to the said outlet passages the movements of the sensor are measured by a pick-up 5. The pressure medium, preferably compressed air, is supplied through connection 6 to act on the sensor 2 to counteract the force of spring 8. The pressure medium flows through passage 9 to outlet passages 10. When the surface to be sensed runs under the outlet apertures 10 a back pressure builds up which releases the locking device 13 and when an interruption in the workpiece passes the outlet passages the pressure is released and the locking device is again brought into action.
Patent GB-900160-A (GB)
Title: A method of roll-plating steel with titanium or titanium alloys
IPC: B32B15/01
Filed: 1960-10-20
Abstract: 900,160. Making composite metal sheet; rolling. DEUTSCHE EDELSTAHLWERKE A.G., and CONTINENTAL TITANIUM METALS CORPORATION S.A. Oct. 20, 1960 [Oct. 28, 1959], No. 36057/60. Classes 83 (2) and 83 (4). In a method of roll plating titanium or its alloys on to iron, steel &c. backings with an interlayer of copper, nickel, aluminium, or aluminium alloy, a stacked assembly, protected from oxidation is rolled at a temperature above the melting point of the interlayer. In examples, foil of aluminium or aluminium alloy 0.2 mm. thick is interposed between a carbon steel plate 50 mm. thick and a titanium sheet 10 mm. thick. The assembly is reduced by 50-70% in a first rolling pass while heated in the range 1000-1250‹ C. and preferably in the range 1050-1150‹ C. and protected by argon gas in a sealed pack.
Patent GB-1140843-A (GB)
Title: Improved cutting tool
Inventor: MOORE ARTHUR IVAN WALTER
IPC: B23C5/22
Filed: 1965-11-01
Abstract: 1,140,843. Cutting tool holders. PRODUCTION ENG. RESEARCH ASSOCIATION OF GREAT BRITAIN. 21 Jan., 1966 [1 Nov., 1965], No. 36058/68. Divided out of 1,140,841. Headings B3B, B3K and B3L. A cutting tool comprises a holder 11 with a bit 12 which is secured to the holder by a screw 5, which passes through a bore in the bit and engages in a thread in the holder, a split sleeve C being located in the bore of the bit so that when the screw S is tightened the sleeve is expanded by a tapered portion of the screw so as to effect a wedging action, the sleeve not projecting beyond, and the screw not projecting substantially beyond, the face of the bit remote from the holder. The tapered portion of the screw may be the countersunk head of the screw itself. The axis of the screw may be inclined at a small angle to the normal of the seating surface of the holder. The tool may be used for planing, turning or shaping operations and the bit may be secured to a milling cutter body for use as a face milling cutter. The sleeve may be of a non-circular matching shape with the bore of the bit to facilitate the indexing of the bit to present successive cutting edges to a workpiece.
Patent GB-843946-A (GB)
Title: Video signal cllpping circuit
IPC: G06V30/162
Filed: 1956-11-27
Abstract: 843,946. Valve limiting circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 27, 1956 [Nov. 30, 1955], No. 36235/56. Class 40(6). [Also in Group XIX] A limiting circuit for deriving uniformamplitude pulses from an incoming pulse train wherein both the pulse amplitude and the "background" level may vary comprises a limiter valve to the control grid of which the input signal is applied, a first averaging circuit which varies the bias at the cathode of the limiting valve in accordance with the mean level of the input signal and, in order to reduce undesired variations in said bias level caused by pulses of considerable duration at the input, a second averaging circuit to which there is applied the output from the limiter valve, which is inverted with respect to the input, the output from said second averaging circuit being fed back to the cathode of the limiter valve together with the mean-level signal derived from the first averaging circuit. The invention has application in a system for reading graphic data involving scanning of the material being read and in which, as Fig. 2 indicates, the peak pulse level in one scan S3 may differ only slightly from the background level during a different scan Sl, so that the input signal to the circuit may take a form somewhat as shown in Fig. 3. The input signal is applied through grid current-limiting resistor 41 to the control grid of limiter valve 23 and also through a potential divider 9 to an averaging circuit comprising a capacitor 16 which by virtue of diodes 12 and 14 and resistors 11 and 13 has different charging and discharging time constants. The "average-level" signal developed across capacitor 16 is applied by cathode follower 18 to one end of a resistor chain 20, a tapping point on which is connected to the cathode of the limiter valve 23 to vary the bias level thereof in accordance with the incoming signal. The output from the limiter valve 23 is applied through capacitor 26 to a level-setting diode 27 which maintains the background level of the signal at earth potential. The limited signals are then applied to an averaging circuit similiar to that already described and the output therefrom is applied to the other end of the resistor chain 20 so that the bias level of the limiter valve also depends on the negativegoing excursions of its output 20 so as to compensate for its dependence upon the positive-going excursions of the incoming signal. Figs. 4, 5, and 6 (not shown) show alternative form of the averaging circuits in which only one diode is employed; so that e.g. the charging resistance comprises two resistors in parallel, one being in series with the diode, while the discharging resistance comprises only that resistor which is not in series with the diode.