baber/WOPTO huggingface dataset:
Patent GB-717281-A (GB)
Title: Improvements relating to the purification of chlortetracycline-containing material
Filed: 1952-07-01
Abstract: Chlortetracycline-containing material is purified by reacting the same in water at a pH not exceeding 3, with an anionic organic sulphuric acid derivative of formula R-On-SO2OH, in which n is 1 or zero, and R is a hydrophobic organic radical such as alkyl, aryl, aralkyl, alkaryl, haloaryl or azoaryl, in which the attaching valence load is linked to a carbon atom, the molecular weight being not less than 210, recovering the resulting chlortetracycline salt-type compound of said sulphuric acid derivative and, if desired, converting the same to another form of chlortetracycline, e.g. hydrochloride, base or calcium salt.  It is preferred to use excess of the sulphuric acid derivative, and to carry out the reaction in the presence of a water-immiscible solvent for the chlortetracycline salt-type compound of said sulphuric acid derivative.  Reactants added in any order; preferred pH 1-2, at which pH, salts of the above sulphuric acid derivatives are converted to the free acid.  Solvents evaporated at a temperature not exceeding 60 DEG  C. Chlortetracycline compound may be further purified by recrystallization from an organic solvent.  The chlortetracycline-containing material refers to chlortetracycline in any form, e.g. neutral, i.e. free base, salts with acids, e.g. hydrochloride, salts with metals, e.g. sodium. It may be obtained by acidifying a fermentation broth and filtering off the insolubles; or by extracting with aqueous acid the precipitate formed by adding alkali to a fermentation broth. Such solutions may be treated with activated carbon.  Specified sulphuric acid derivatives are: sodium tetradecylsulphate; sodium di-(2-ethyl hexyl) sulphosuccinate; sodium 2-ethyl heptyl sulphate; sodium lauryl sulphate; 2,5-dichlorobenzene sulphonic acid; p-xylene sulphonic acid; 4-hydroxyazobenzene 41-sulphonic acid; 2,4-dinitronaphthol-7-sulphonic acid; 5-sulphosalicylic acid; 2,4-dichlorophenol-6-sulphonic acid; 2 - chlorotoluene - 5 - sulphonic acid; 4 - nitrochlorobenzene - 2 - sulphonic acid; 2 - naphthalenesulphonic acid; 2,4 - dihydroxy azobenzene 4-sulphonic acid; salts of the above acids; turkey red oil; alkyl sulphates having 10 to 20 C atoms; aryl, aralkyl or alkaryl sulphonic acids having 10 to 25 C atoms; and sodium 2,9-diethyltridecane-6-sulphate.  Specified water-immiscible solvents are: halogenated hydrocarbons such as ethylene dichloride, trichloroethylene, trichloroethane, propylene dichloride, chloroform, 2-phenoxy ethanol, dimethyl phthalate, ethyl hydrogen phthalate, isopropyl acetate, butyl acetate, ethers, e.g. dichloroisopropyl ether, ketones such as methyl isobutyl ketone, alcohols of 4 or more C atoms, e.g. methylisobutyl carbinol, hexanols, butanol and amyl alcohol. Specification 690,381 is referred to.
Patent GB-203422-A (GB)
Title: Variable gear for motor vehicles
IPC: F16H29/08
Filed: 1923-04-10
Abstract: 203,422. Lawrence, W. L. April 10, 1923. Variable-speed ratchet gearing of the kind comprising an adjustable lever linkage 3 comprises rack and pinion gearing 5, 13 which drives a shaft 16 on both the forward and the backward stroke of the rack 5. There are two pinions 13 ratchetmounted on separate shafts 14 and meshing with the rack 5 on the same side. The shafts 14 are connected by gears 15.
Patent GB-1092336-A (GB)
Title: Improvements relating to packs for liquids
IPC: B65D77/06
Filed: 1965-04-20
Abstract: 1,092,336. Liquid containers; plastics bags. ANGOVES PROPRIETARY Ltd. April 20, 1965 [April 20, 1964], No. 16637/65. Headings B8K and B8P. A container for liquids comprises an outer cardboard shell 20 and a one-piece fluid-tight plastics bag 2 with a neck 3. The bag 2 is made from a tube of plastics material and the base is closed by four welds 9-(12), Fig. 8 (not shown), so that the bag has a flat square base when filled with liquid. The neck 3 of the bag is also formed by welds 5-(8), Fig. 6 (not shown). The carton 20 forms a rigid support for the bag. The neck of the bag may be sealed after filling and folded inside the carton and the flaps 21 folded inwards. The bag may be laminated and is preferably made of polythene.
Patent GB-387574-A (GB)
Title: Improvements in or relating to reflex lights
IPC: B62J6/02
Filed: 1932-06-13
Abstract: 387,574. Reflex lights. CADDY, S. C. and CADDY, E., Waveney, Georgia Avenue, Worthing. June 13,1932, No. 16712. [Class 97 (i).] A transparent or translucent coloured member is inserted and supported loosely between the reflector of a reflex light and the front glass. In the form shown, the reflex light comprises a mirror 51 and front glass 4 carried by a casing 1. The inserted member consists of a tube 9 carrying a number of strips 10 of coloured glass &c. In another form, the inserted member is cone-shaped with its smaller end abutting against the mirror. The mirror may have a central aperture through which can be passed an electric bulb carried by a battery casing which can be held in the hand or attached tu a bracket.
Patent GB-439249-A (GB)
Title: Improvements relating to screw propellers
IPC: B63H1/26
Filed: 1934-06-05
Abstract: 439,249. Screw propellers. MILNE, G., 40, Castle Street, Fraserburgh, Aberdeenshire. June 5, 1934, Nos. 16723/34 and 12002 /35. [Class 114] The blades of a screw propeller are mounted on the boss A so as to form substantially a letter S-form in end view, the re-entrant edge B of each blade constituting the leading edge and the outer edge C the trailing edge, each edge being located in a parallel plane normal to the propeller axis and the medium plane of the root being disposed helically on the boss. The tip D is curved over the leading edge B and extensions E, F are formed at either side which lie on a cylindrical surface concentric with the axis. The curvature of the leading edge B and tip D is constituted by three curves tangentially running into each other, the first curve extending from the boss to 1, the second curve from 1 to 2 and the third from 2 to the tip. The aft face G is concave with the pitch diminishing towards the tip and the forward face H is convex and is also of varying pitch. Annular guard rings K may be formed integrally with or be secured to the blades.
Patent GB-329856-A (GB)
Title: Liquid brake for barrel recoil guns
IPC: F41A25/02
Filed: 1929-05-30
Abstract: 329,856. Jackson, L. Mellersh-, (Aktiebolaget Bofors). May 30, 1929. Recoil apparatus.-For the purpose of cooling the brake liquid, the brake cylinder C is surrounded by a jacket B containing a separate cooling liquid, the liquid being introduced through a funnel b<4> which also serves for the escape of steam. In the construction shown, the brake cylinder is disposed in the lower portion of a boxshaped slide-carrier which serves as the jacket, provision for expansion of the cylinder being provided by a slidable bearing e<1>.
Patent GB-281354-A (GB)
Title: Improvements in or relating to motor driven vehicles
IPC: F02M1/00
Filed: 1926-07-03
Abstract: 281,354. Wickman, A. C. July 3, 1926. Fire prevention.-In order to minimize risk of fire the carburettor a, b is enclosed in a casing d containing petrol p, which maintains a gaseous mixture in the casing too rich for combustion. A constant supply from the tank enters at k and passes back to the tank by a trapped pipe g. Any fuel leaking from the jet to the air-intake e passes to the tank by a pipe h.
Patent GB-586060-A (GB)
Title: Improvements in or relating to bottles or like containers
IPC: B65D41/04
Filed: 1944-09-04
Abstract: 586,060. Bottle caps. LEADER, S. A. Sept. 4, 1944, No. 16876. [Class 125 (iii)] A screw-top bottle or like container, e.g., for volatile liquids has a screw-cap 4 containing a washer or liner 7 and serrations on the top of the bottle or other formation, e.g., a convexity 5 on the cap which ensures that the friction between the upper surface of the washer or liner and the cap is less than the friction between the lower surface and the bottle. A polished metal, or synthetic resin disc may be inserted between the washer and the convexity 5. The washer 7 may consist of an upper layer of cork and a lower layer of tin, paper or plastic.
Patent GB-130227-A (GB)
Title: Improvements relating to Scoring Cards for Games.
Inventor: MCCURRY FRANCIS JOSEPH
IPC: A63F1/18
Filed: 1918-10-17
Abstract: 130,227. McCurry, F. J. Oct. 17, 1918. Scoring and marking apparatus.-Relates to scoring-appliances for games, and (as adapted for scoring at whist drives) comprises cards c each marked as shown in Fig. 4 and perforated by holes l<1>, l<2>, w<1>, w<2>. The cards are placed over bars a, f sliding in a block d, the perforations w', w<2> of the winner's card and the perforations l<1>, l<2> of the loser's card being fitted over a pair of projecticns on the bar a. The operator then moves the bar f until a perforating punch g attached to the bar is situated over the number representing the tricks to be scored on the upper card, and punches the cards simultaneously. Owing to the relative displacement of the cards and to the manner of marking the tricks as shown in Fig. 4, the lower card will he correctly punched to indicate the tricks scored.
Patent GB-455687-A (GB)
Title: Improvements in wheels for vehicles
IPC: B60B21/02
Filed: 1935-04-23
Abstract: 455,687. Vehicle wheels. BARKER, G. G., 14, High Holborn, London.-(Bendix Aviation Corporation; 105, West Adams Street, Chicago, U.S.A.) April 23, 1935, No. 16974/36. Divided out of 455,625. [Class 144 (i)] A wheel comprises an inner load-supporting disc 252 to which is secured, as by welding, the off -set portion 260 of a disc 258 mounted on the wheel-hub and supporting the brake-drum 272. The disc 258 is formed with pressed spoke elements 256 with which may engage torquetransmission lugs on the brake-drum. The flanged outer edges of the discs 252, 258 and a bracing-ring 264 are welded to the rim-flange 244. In the construction shown, the rim is formed integral with the outer wheel-disc 236, a stiffening-disc 248 being welded to the disc 236 and the well-base 240 of the rim.
Patent GB-595292-A (GB)
Title: Improvements in or relating to statistical record cards
IPC: G06K19/04
Filed: 1945-07-03
Abstract: 595,292. Statistical apparatus. FARRER, J. O. (Remington Rand, Inc.). July 3, 1945, Nos. 16977/45 and 17821/46. [Class 106 (i)] The invention relates to a statistical record card 10 which is adapted, in conjunction with an analysing device, to control the operation of a business machine and is arranged in known manner to receive slotted hole data indicating perforations 11 disposed in horizontal rows and vertical columns, the central points of the slotted holes being the points of intersection of horizontal and vertical median lines defining the rows and columns. According to the invention the card is provided with round hole data indicating perforations 14 the centres for holes in consecutive data positions of a horizontal row being substantially equi-distant from opposite sides of the horizontal median line 19 for the row and on the respective vertical median lines, the holes in consecutive data positions of the row being intersected by the horizontal median line in a manner such that the horizontal median line passes through the upper portion of a hole in one data position and through the lower portion of a hole in the next consecutive data position of the row, whereby an analysing device, e.g. an analysing device including sensing pins 15, may be employed to analyse a card provided with the round hole perforations 14 or a card having slotted hole perforations 11 formed in known manner about similarly disposed horizontal and vertical median lines. By employing a known combination code the 80 columns of the card can be utilised to represent 160 columns of data. The capacity of the card can again be doubled to provide 320 columns by representing data in the spaces 20 between the normal rows 19. Card analysing mechanism for sensing the card, moving it forward a distance to bring the intermediate rows 20 into alignment with the sensing pins and sensing a second time, is described in Specification 596,294, which is referred to.
Patent GB-1342033-A (GB)
Title: Process for the separation of solids
IPC: C01B17/60
Filed: 1971-05-25
Abstract: 1342033 MgSO 3  from gas scrubbing CHEMICAL CONSTRUCTION CORP 25 May 1971 [10 June 1970] 16981/71 Heading C1A [Also in Division B2] A slurry derived from a gas scrubbing process and initially containing less than 15% by weight of solids comprising magnesium sulphite, magnesium sulphate and magnesium oxide is fed to a centrifuge which rotates at at least 1500 r.p.m., the rate of feed of the slurry, solids concentration of the slurry and the speed of reaction of the centrifuge being controlled to produce a final solids cake with a moisture content of less than 5% by weight and an aqueous separated phase containing less than 1% solids by weight. The slurry is first decanted to obtain a thickened slurry of 5 to 25% by weight. The thickened slurry is then heated to above 40‹ C. to convert magnesium sulphite hexahydrate to the trihydrate form and then passed through the centrifuge. The slurry to be centrifuged may be derived from the scrubbing of waste or flue gases for sulphur dioxide removal with a circulating aqueous magnesium oxide-sulphite slurry.
Patent GB-973336-A (GB)
Title: Disperse dyes of the anthraquinone series for hydrophobic fibre
IPC: C09B1/54
Filed: 1963-04-30
Abstract: The invention comprises disperse dyes of the formula <FORM:0973336/C4-C5/1> wherein R1 and R2 are each hydrogen or methyl. They are made by heating 1-amino-4-hydroxy-2-phenoxy-anthraquinone with a mono-alkali-metal alcoholate of a diol of the formula <FORM:0973336/C4-C5/2> where R1 and R2 are as above.  Examples are given. The dyes dye and print nylon, polyethylene terephthalate, polyacrylonitrile and cellulose acetate materials in pink and cerise shades from aqueous dispersions.
Patent GB-237236-A (GB)
Title: Improvements in electric discharge devices
IPC: H01J17/40
Filed: 1925-07-02
Abstract: 237,236. British Thomson-Houston Co., Ltd., (Assignees of Charlton, E. E.). July 17, 1924, [Convention date]. Vacuum tubes.-A discharge device of the gas ionization type for rectifying both halves of an alternating current has a single cathode and a plurality of anodes, the cathode being of greater superficial area than the anode and so positioned as to shield the anodes from one another so as to prevent discharges between the anodes. The cathode may comprise a plate 2, Fig. 1, of nickel, iron, molybdenum, tantalum, &c. with anodes 3 consisting of tungsten, nickel, or other wires arranged close to and on opposite sides of the cathode 2. The bulb 1 is filled with helium or a mixture of helium and neon at a pressure of from 5 to 80 mm. of mercury. It is preferred to use helium at a pressure of 19 mm. of mercury. A small quantity of metallic magnesium, calcium, or other alkali-earth metal may be applied to one of the electrodes which, after exhaustion of the bulb and the introduction of helium, are heated by a high-frequency field to the vaporizing temperature of the magnesium &c. thereby depositing a film of the metal on the walls of the bulb. This film is chemically reactive towards gaseous impurities, the removal of which lowers the voltage consumption of the device as described in Specification 237,235. Caesium, rubidium, or other alkali metal may be introduced into the bulb and oxidized by admitting a little oxygen and warming the bulb. The anodes 3 may be connected to the terminals of the secondary winding of a transformer, the cathode being connected in series with a load to an intermediate point. A wave filter consisting of a series inductance and shunt condensers may be provided to produce a steady current condition. The cathode may consist of two electrically connected cylinders 16, 17, Fig. 3, each surrounding an anode, 18, 19, which may be a small wire or, as shown, a larger rod. In order to reduce the effective area of rod-shaped anodes, they are surrounded by insulating envelopes 22, 23 having apertures 24, 25 at the ends. The envelopes 22, 23 may be coated with metal on their inner surfaces, the metal coatings' being connected to the anodes by helical springs.
Patent GB-426849-A (GB)
Title: Improvements in or relating to planographic printing
IPC: B41N3/08
Filed: 1934-06-08
Abstract: 426,849. Printing-surfaces damping- apparatus. BROOKES, N. E., 1, Quality Court, Chancery Lane, London.-(Multigraph Co. ; 1814, East 40th Street, Cleveland, Ohio, U.S.A.) June 8, 1934, No. 17048. [Class 100 (ii)] The non-printing area of a metal printing- plate is rendered glycerine-receptive and is given a thin coating of glycerine, printing being effected with an ordinary greasy ink; alternatively, other materials such as tough parchment paper which are retentive of a greasy image and are or can be rendered glycerine-receptive may be used in place of metal. A metal plate may be rendered glycerine-receptive before or after the application of the image by treatment with a solution of salts, preferably ammonium nitrate and ammonium dihydrogen phosphate. The image may be formed directly on or etched into the surface or formed photographically on a colloid film. The ink is preferably slightly acidic, unless the surface is completely coated with a colloid film. If many imprints have to be taken from the surface, additional glycerine is applied periodically, preferably by means of a foraminous roller, e.g. of felt or sponge rubber, to which glycerine may be applied by a saturated hand roller. An auxiliary roller is preferably also used, formed of a material, e.g. vulcanized rubber or artificial resin, which is not readily wet by glycerine or affected by the salt solution. To prevent ink being picked up by the glycerinecoated surface, a small amount of a solution of ammonium nitrate and ammonium dihydrogen phosphate may be added to the glycerine, or a solution of these salts may be occasionally applied to the glycerine film. Equivalents such as glycol and triethanolamine may be used in place of glycerine.
Patent GB-333972-A (GB)
Title: Improvements in or relating to coupling elements, particularly for volume control in wireless circuits
IPC: H03G3/16
Filed: 1929-06-04
Abstract: 333,972. Dicker, S. G. S., (Nederlandsche Seintoestellenfabriek). June 4, 1929. Themionic amplifiers.-A volume control for use in high-frequency circuits without varying the tuning adjustment comprises an impedance constituted by two parallel branches each containing two condensers in series, the capacity of one of the condensers being wholly or partially constituted by the grid-filament capacity of the valve. The Figure shows a three-electrode condenser 4 in series with condensers 5, 6. Condenser 5 may be formed as a plate co-operating with the plate 10 of the three-electrode condenser.
Patent GB-1484241-A (GB)
Title: Apparatus for cutting out the vent of a fowl
IPC: A22C21/06
Filed: 1976-04-27
Abstract: 1484241 Cutting poultry vent P MEYN 27 April 1976 [29 April 1975] 17087/76 Heading A2U Apparatus for cutting out the vent of a fowl which is hanging by its ankle joints from a hook on the overhead conveyor comprises at least one cutting means arranged to move with and comprising a drivable hollow cylindrical knife 16 concentrically rotatable about a centre pin 25 which is insertable into the vent opening in order to centre the knife, characterized in that the centre pin axially reciprocable relative to the knife, is provided with an onion-shaped knob at its lower end and carries an axially slidable clamping sleeve 23 controlled and mounted in such a manner that in use after the centre pin is inserted the periphery of the vent opening is gripped between the lower edges of the sleeve and the upper surface of the knob. The apparatus shown is in the form of a "merrygo-round" rotated by engagement with the conveyor, centre pin 25, sleeve 23 and knife 16 being raised and lowered automatically by stationary cam surfaces. The knife 16 is rotated by a belt drive on pulley 18.
Patent GB-1294435-A (GB)
Title: Bundle tie
Inventor: EBERHARDT ROBERT
IPC: B65D63/10
Filed: 1971-05-26
Abstract: 1294435 Clamping bands ALL STATES PLASTIC MFG CO Inc 26 May 1971 17149/71 Heading E2B A bundle tie of resilient material comprises a strap 11 having on one side a plurality of longitudinally spaced, transverse teeth 12, a head 21 at one end of the strap, the head having walls defining an aperture to pass the strap, the interior face 44 of one wall being flat for abutment by the other side of the strap and a pawl 41 having a plurality of teeth, the pawl being carried on the head by a neck portion integral with a ledge 37 and extending into the aperture, the pawl being swingable between strap releasing and strap engaging positions, the apex angle of the pawl teeth being less than the apex angle of the strap teeth, whereby when in use, the strap is around a bundle, passed through the aperture and pulled tight on abutment face 41e, 41f of each pawl tooth respectively is compressed into face to face relation with a face of one of the respective strap teeth. A pair of lugs 31 on the strap prevents the bundle becoming wedged in a corner. The tie may be moulded from plastics.
Patent GB-1220496-A (GB)
Title: High intensity linear accelerators
Inventor: CROITORU PETRICA
IPC: B07B13/00
Filed: 1968-04-10
Abstract: 1,220,496. Particle accelerators; heavy-ion beam tubes; cathode ray tubes. ROUMANIA, INSTITUTE OF ATOMIC PHYSICS. 10 April, 1968 [10 April, 1967], No. 17174/68. Heading H1D. A linear accelerator has a hollow tubular electron or ion beam formed by an annular source S at one end of an elongated evacuated chamber 7 and, after acceleration through the annular passage of a particle accelerator to the opposite end of chamber 7, the beam is focused on to the longitudinal axis of the chamber by a rotationally symmetrical deflector 6. As shown, the beam is accelerated by a continuous or pulsed electric field applied to tubular electrodes 2-5 and focused by tubular electrode 6. Alternatively, the beam is accelerated by a radiofrequency field existing in a waveguide which is loaded with discs which may have drift tubes, Figs. 3 and 4 (not shown), or the wave guide may have an interdigitated loading structure, Fig. 5 (not shown). Acceleration may also be obtained by using a cylindrical or coaxial cavity, Figs. 6A, 6B (not shown). A number of tubular beams of different radii may be used with a filiform beam to enhance the intensity.
Patent GB-1058413-A (GB)
Title: An improved method of coating metallic surfaces
Inventor: GUY VICTOR HAROLD
IPC: C09D5/44
Filed: 1963-05-01
Abstract: A composite coating is formed on a metallic surface by immersing it in a coating medium including a resin or paint and an additive capable of chemically reacting with the surface to form a corrosion-resistant or passivating substrate on the surface, and electrodepositing a coating of the resin or paint.  The conversion coating may be formed prior to or simultaneously with the electrodeposited resin or paint coating and in the latter case the conversion coating formation is accelerated by the applied voltage. A degreasing agent may be included in the coating medium. As described the coating medium is an aqueous bath of an ammonia-stabilized phenolic alkyd water soluble resin pigmented with a vegetable carbon black and containing as the conversion coating component 8-hydroxyquinoline or tannic acid, the bath being used at 25 to 30 DEG C. and adjusted to pH 7.7 with ammonia.  In examples the article is connected as anode with the coating tank as cathode and an applied D.C. voltage of 30 or 60 volts.  The coated article is subsequently stoved, e.g. at 165 DEG C.