baber/WOPTO huggingface dataset:
Patent GB-871423-A (GB)
Title: 6-deoxytetracyclines
IPC: A61K/
Filed: 1959-07-24
Abstract: 871,423. 6-deoxytetracyclines. AMERICAN CYANAMID CO. July 24, 1959 [July 28, 1958], No. 25452/59. Class 2 (3). A 6-deoxytetracycline of formula: is produced by catalytically reducing with hydrogen a tetracycline of formula: wherein R 1  is hydrogen or methyl, R 2  is hydrogen or hydroxy, R 3  and R 4  are hydrogen or dimethylamino with the proviso that both may not be hydrogen or dimethylamino and R 5  is chlorine or bromine, R 2  only being hydroxy when R 1  is methyl, or an acid addition salt thereof, the reaction being carried out in a polar solvent solution in the presence of a noble metal catalyst and a substance capable of forming a chelate ring with a peri-dioxygenated hydronaphthalene, until approximately one molecule of hydrogen has been absorbed per mol of tetracycline. A temperature of 0-100C. and pressure of ¢ to 100 atmospheres is used. The catalyst may be palladium or platinum especially suspended on a carrier. The substances capable of forming a chelate ring may be boric acid, boron trihalides e.g. boron trifluoride, aluminium salts such as the chloride and magnesium salts such as the acetate. The preferred reaction solvent is a mixture of water and dimethylformamide. The 6-deoxytetracycline may be converted to (a) the acid salt by treatment with an acid at a pH below 4.0 e.g. sulphate, phosphate, oxalate, citrate, gluconate and trichloroacetate (b) the alkali metal and alkaline earth metal salt by treatment with the appropriate base to a pH above 6À0 (c) a metal complex of a metal salt such as aluminium gluconate and (d) the 4- epimer by maintaining a pH 3.0 to 5.0 and allowing to stand. Specification 815,524 is referred to.
Patent GB-1501108-A (GB)
Title: Electrolytic analytical methods
IPC: G01N27/40
Filed: 1974-06-07
Abstract: 1501108 Monitoring boiler feed water UNITED KINGDOM ATOMIC ENERGY AUTHORITY 2 June 1975 [7 June 1974] 25458/74 Heading G1B [Also in Division C7] Ion concentrations below levels suitable for direct measurement are detected in a flowing liquid by tapping an isokinetic sample therefrom and passing it across one face of a porous neutral membrane of pore size 0À2-1 micron across which is applied a D.C. voltage which attracts the ions of interest through the membrane into a volume of liquid (initially ion free) on its other side, the accumulated ion-concentration in which is measured when it is high enough, and the value obtained being then related to the liquid flow. Chloride in boiler-feed water may be detected, the ion-free liquid being derived from a steam condensate well and being optionally de-ionized by electrolysis identically to the sample liquid. Chloride concentrations below 1 Ág/l are detectable. The ion-free liquid may flow or be static. Continuous monitoring using colorimetric detection is specified
Patent GB-517105-A (GB)
Title: Improvements in epicyclic gearing
IPC: F16H3/66
Filed: 1938-09-01
Abstract: 517,105. Motor-vehicle driving gear. THOMSON, J. Sept. 1, 1938, No. 25562. [Class 79 (ii)] [Also in Group XXIV] A variable - speed epicyclic gearing, particularly adapted for steering endless track vehicles, comprises driving and driven shafts 5, 6, Fig. 1, and a freelyrotatable carrier 7, common to both shafts and carrying two sets of,planet wheels, 12, 13 respectively meshing with sun wheels 8, 9 on the said shafts and with outer internally - toothed rings 10, 11 being provided with crown teeth which mesh with a common pinion 14 on a rotatable hand &c. control rod 15. The arrangement is such that the rings 10, 11 are normally stationary, but rotation of the pinion 14 in either direction will effect a rotation of the rings in opposite directions and a variation of the speed ratio of the shafts 5, 6. Fig. 3 shows the invention applied to a differential gearing between shafts 6, 17 constituting the driving axles of a road vehicle in which case the sun wheel 8 is made integral with the differential planet wheel carrier 18 which is formed as a crown for rotation by a driving pinion 19 and rotatably supports the outer ring 10, and the sun wheel 9 is mounted on the shaft 6, the adjacent ends of the shafts 6, 17 carrying bevel pinions 16, 22 meshing with the planet wheels 21 of the said carrier 18. In both of the above constructions, one of the rings 10, 11 may be permanently fixed and the other rotatable by manually or mechanically operable means.
Patent GB-674607-A (GB)
Title: Process for the manufacture of substances preventing the coagulation of blood
Filed: 1950-10-20
Abstract: Blood anti-coagulants having an activity of more than 100 International Units per milligram and a sulphur content of 10-15 per cent are prepared by treating a by-product of heparin manufacture having an activity of the order of that of heparin-mono- or di-sulphuric acid ester with a sulphating agent. The following starting materials are specified: the by-product which is separable from impure heparin preparation by treatment with zinc and cadmium salts in dilute alcohol, heparin-mono-or di-sulphuric acid ester, the total fraction which is precipitated by alcohol or acetone during heparin manufacture and/or the fraction which is obtainable from the mother liquors of the heparin purification process.  Chlorosulphonic acid may be used as the sulphating agent, if desired in the presence of a solvent such as pyridine or a -picoline.  The sulphated products may be precipitated from the reaction mixture by means of brucine or narcotine.  These alkaloid salts may be suspended in sodium carbonate solution, the separating alkaloid bases being filtered off and, after the filtrate has been made slightly acid, the sulphuric esters may be precipitated by means of methanol or ethanol.
Patent GB-1393650-A (GB)
Title: Boiler for use with gaseous fuel or oil
IPC: F28F19/06
Filed: 1973-05-30
Abstract: 1393650 Water tube boiler RAYPAK Inc 30 May 1973 [31 May 1972] 25628/73 Heading F4A A boiler comprises a plurality of tubes 20, 22 extending between tube sheets 28, 28<SP>1</SP> which comprise a plurality of tube sheet sections 34- 38 joined by means allowing relative movement in the direction of the tube axes in response to differential expansion of the tubes. Adjacent sections may be joined by a link 74, which may be of stainless steel, positioned in grooves in the sections, or by a seal of silicone rubber or other resilient material. The tubes are arranged in two staggered horizontal rows and have fins 126. Water passes from inlet header 44 to outlet header 64 through the tubes and via headers 46, 52, 56, the tube sheet sections each providing a surface of a respective header, which surface has a copper lining 128, Fig. 7, extending beyond the end of the tube, and a flanged copper ring 138 is placed between the extension of the lining and a flange 134 of the covering 120 and is deformed to bear on the flange 134 when the tube is flared to seal it to the tube sheet, so that water flowing in the boiler contacts only copper. To facilitate replacement a tube 21, Fig. 10, has less fins at one end 23, which end is also thinner so that it may be inserted at an angle into tube sheet 28<SP>1</SP> and the standard end then be inserted into tube sheet 28.
Patent GB-708559-A (GB)
Title: Cylinder heads for air-cooled diesel engines
IPC: F02B3/06
Filed: 1951-11-02
Abstract: 708,559. Compression ignition engines; cooling cylinders. KLOCKNER-HUMBOLDT-DEUTZ AKT.-GES. Nov. 2, 1951 [Dec. 6, 1950], No. 25731/51. Classes 7(2) and 7(3) In a cylinder head of an air-cooled direct injection engine having a combustion chamber 2 with a fuel injector 5 and inlet and exhaust passages 6, 7, controlled by overhead valves, the valves and combustion chamber are arranged in a triangle relatively to one another and the combustion chamber is located on the side of the cylinder from which the cooling air flows towards the latter such that the cooling air passes around the combustion chamber 2 and flows towards a space between the inlet and exhaust passages, an incandescent ignition plug 4 being situated on the side of the chamber 2 which faces towards the valves. A guide plate 17 directs the cooling air towards fins 13 surrounding the chamber 2, and openings 21, Fig. 2, admit cooling air to the passage in the head between the inlet and exhaust passages 6, 7, which passage has cooling fins 15 therein cast integral with the head 16 and with a plate 18 overlying the head, to which plate the guide plate 17 is fixed. The ends of the fins adjacent the openings 21 are either curved towards said openings or straight but of gradually decreasing height.
Patent GB-501298-A (GB)
Title: Improvements relating to injector nozzles for gas burners
IPC: F23D14/48
Filed: 1937-09-23
Abstract: 501,298. Gas burners. GENERAL GAS APPLIANCES, Ltd., and COLEMAN, F. S. Sept. 23, 1937, No. 25779. [Class 75 (i)] In a gas nipple e in which a rotatable perforated disc a co-operates with the perforated end wall e<1> to form a hit-and-miss regulator, the disc a is provided with peripheral notches c engaged by lugs f on a sleeve d formed with a worm-wheel g for rotation by a worm-screw h. The disc a is preferably made of steatite or other ceramic material with the outer face ground smooth and provided with a central and radial groups of apertures b, the end wall el having a single aperture b<1> of a shape similar to that within which the apertures b are arranged. The disc a is pressed against the end wall e<1> by a spring o engaging a shoulder d<1> in the sleeve. One end k of the worm-screw spindle engages in a socket l in an integral offset housing i and the other end n extends through metal and fibre washers p and a gland nut m and is slotted for actuation by a screwdriver.
Patent GB-885623-A (GB)
Title: Methods of producing polyvinyl esters
IPC: C08F218/06
Filed: 1960-07-25
Abstract: Vinyl formate is polymerized in the presence of vinyl acetate at a low temperature, i.e. at 40 DEG  C. or below.  The vinyl acetate may be present as up to 50% of the monomers and polymerization may be carried out in bulk using azo-bis-isobutyronitrile or triethyl boron and benzoyl peroxide as catalysts.  The polyvinyl ester product may be hydrolyzed to polyvinyl alcohol and this may be spun or moulded into fibre, film and moulded products.
Patent GB-805631-A (GB)
Title: Process for the production of a collapsible container
IPC: B65D75/20
Filed: 1953-09-18
Abstract: 805,631. Collapsible containers. RADO, L. Dec. 20, 1954 [Sept. 18, 1953], No. 25840/53. Class 66. A process for the production of a collapsible container from thermoplastic sheets or from non-thermoplastic sheets coated with thermoplastic substances, or laminated to thermoplastic sheets, comprises forming a cut-out shape 1, Fig. 1, having two symmetrical wings that can be folded about a narrow part 6, Fig. 2, to cover each other, inserting a flanged thermoplastic screw nozzle 5 through a hole in the narrow part 6, welding the flange of the nozzle 5 to the cut-out shape, and then folding the cutout shape about its narrowest part 6 and welding the resulting adjacent faces together along their edges. The non-thermoplastic part of the sheets may be paper, fabric or metal foil.
Patent GB-645561-A (GB)
Title: Improvements in and relating to hinge constructions
IPC: E05F1/12
Filed: 1948-10-05
Abstract: 645,561. Hinges and pivots. FORD MOTOR CO., Ltd. Oct. 5. 1948, No. 25918. Convention date, Dec. 10, 1947. [Class 65(ii)] A hinge assembly for mounting the tailgate closure upon a station wagon type of automobile body comprises leaves 13, 14 having interengageable knuckles 16, 17 with cylindrical sockets, an elongated tension bar pintle 19 of square cross-section, and mounting brackets 21, 22 adapted to receive the ends of the pintle. The leaf 13 and bracket 21 are secured to the inner surface 23 of the tailgate 11, and the leaf 14 and bracket 22 are secured to the wagon. floor 24. The pintle is pre-loaded in one or other direction before fixing.
Patent GB-420135-A (GB)
Title: Improvements in needle bar bearing mechanism for sewing machines
IPC: D05B3/06
Filed: 1934-09-10
Abstract: 420,135. Sewing - machines. JACK. SON, L. MELLERSH-, 28, Southampton Buildings, Chancery Lane, London.-(Inter. national Button Hole Sewing Machine Co.; 502, Harrison Avenue, Boston, U.S.A.) Sept. 10, 1934, No. 25969. [Class 112] A flexible metal disc bearing for the needle bar of buttonhole sewing-machines permits reciprocation, rotation and lateral jogging of the needle-bar. The needle-bar 12 reciprocates and rotates in a bearing sleeve 16 which carries a flexible metal disc 20 clamped at its centre between a shoulder on the sleeve and a lock nut 19. At its periphery, the disc is clamped between a shoulder 14 and lock nut 15. The flexible sleeve permits jogging motion of the needle.
Patent GB-794322-A (GB)
Title: A method of producing glass film or flake
IPC: C03B37/005
Filed: 1956-08-24
Abstract: 794,322. Glass films and flakes. OWENSCORNING FIBERGLAS CORPORATION. Aug. 24, 1956 [Aug. 29, 1955], No. 25991/56. Class 56. Glass film, which may be flaked, is made by passing molten glass through an annular orifice 18 in the bottom of a melter 11 and slightly ballooning the cylinder thus formed by an air inlet 24. The cylinder is then flattened by passing it between attenuating rollers 19 having an undercut surface to prevent complete collapse of the cylinder and to allow the passage of sufficient air to re-expand the flattened cylinder somewhat. This then passes between perforated rollers 21 set closer together than the rollers 19. The rollers are provided with boxes 27, Fig. 1, 68, Fig. 5. The boxes 27 are compartmented, the upper compartments communicating with suction at 31, and the lower with pressure at 32. The suction splits the edges of the flattened cylinder to form two separate films which then are foliated by the pressure from the lower compartments of the boxes. The boxes 68 are connected to suction only and are used when the films are to be collected as such without foliation. Powdered materials for covering the flakes may be introduced in the air supplied through the inlet 24 or in the pressure air to the lower compartments of the boxes 27. The flake or film may be used to reinforce resins, rubber, cement, mastic, gypsum, paper or glass.
Patent GB-1129186-A (GB)
Title: Improvements in or relating to electric timing circuits
Inventor: MORRIS RICHARD MICHAEL
IPC: H04M3/12
Filed: 1966-06-10
Abstract: 1,129,186. Transistor time delay circuits; automatic exchange equipment. GENERAL ELECTRIC CO. Ltd. 6 June, 1967 [10 June, 1966], No. 26002/66. Headings H3T and H4K. A timing circuit comprises a capacitor which, when a pair of contacts is closed, discharges towards a value at which a transistor conducts whereby an electromagnetic relay is operated by the transistor only if the contacts remain closed for longer than a predetermined period. The circuit is suitable for detecting pauses in pulse trains signalling digit values of telephone numbers. When switching device 1 is open, transistor 2 is not conducting and capacitor 8 charges through resistor 6 to the difference between the supply voltage and the voltage across a Zener diode 12. The switching device closes between input pulses and the capacitor then commences to discharge through resistor 10 and the switching device. If the latter remains closed for long enough, i.e. between pulse trains but not between pulses of a train, the capacitor charges sufficiently to render diode 9 and transistor 2 conductive so that relay 15 is operated. Device 1 may be a relay contact, a transistor, a thyristor or a valve.
Patent GB-260341-A (GB)
Abstract: 260,341. Cerda, G. S. D. July 27, 1925. Hat boxes.-A device for protecting hats in transit comprises a number of resilient strips 1, 2 pivoted at 3, and adapted to be erected outside the hat into the form shown in Fig. 2. The end portions 4 - - 7 are bent at right angles during the setting up, the strips being scored to facilitate this, and the whole is secured by ties 8 - - 11 or by press buttons. The pivot may be made integral with or be detachably connected to a hook or handle. In a modification, the strips are formed from a single piece of material so as to have four, six or more arms radiating from a centre.
Patent GB-949144-A (GB)
Title: Solutions of syndiotactic polyvinyl alcohol
IPC: C08J3/09
Filed: 1962-07-06
Abstract: Syndiotactic polyvinyl alcohol is dissolved in dimethyl sulphoxide. The polyvinyl alcohol may be prepared by ammonolysis of polyvinyl trifluoracetate, and solution may be effected by contacting the polyvinyl alcohol with dimethyl sulphoxide at room temperature for some hours, and then heating to 80 DEG C. for a few minutes with agitation. The solutions may be used in the making of coatings, films, threads and fibres.
Patent GB-589445-A (GB)
Title: Improvements in and relating to lawn edge trimmers
IPC: A01G3/06
Filed: 1944-12-29
Abstract: 589,445. Lawn-edge trimmers. BOOTH, R. Dec. 29, 1944, No. 26074. Addition to 589,244. [Class 6 (ii)] A lawn-edge trimmer comprises a roller or rollers 23 propelled along the grass and a lower cutter-roller or rollers 21 of which the upper part of the flank engages a peripheral groove 24 in the upper roller. The cutter may be bevelled, its sides being hollow ground, and is spring- pressed against the roller.
Patent GB-161123-A (GB)
Title: Improvements in anti-friction bearing
IPC: F16C19/36
Filed: 1920-09-10
Abstract: 161,123. Thornton, A. A., (Vacuumeter Selling Co.). Sept. 10, 1920. Roller bearings for motor-vehicle wheel hubs &c. Tapered rollers 6 run on conical races 1, 2, the inner races being formed with flat shoulders 4<1>, 5<1> at right-angles to the axis of the bearing. Rings 7, 8 with conical surfaces 9, 11 are mounted on the race ring 1 to retain the flat at the larger ends 6<1> and conical at the smaller ends 6<11>. The outer race ring is cylindrical at 13 and flat at the end 15, which abuts against a shoulder in the hub, and the intermediate surface 16 is conical and out of contact with the hub. A flange 12 on the ring 7 excludes dust from the bearing.
Patent GB-697625-A (GB)
Title: Improvements relating to the production of reflecting surfaces
IPC: G09F13/16
Filed: 1950-10-26
Abstract: 697,625. Reflex reflectors. RUTHERFORD, A. C. Oct. 26, 1951 [Oct. 26, 1950], No. 26110/50. Class 97 (i). [Also in Group XVIII] A reflecting surface 4 is formed by mixing a multiplicity of globules of a transparent solid material with an adhesive which is transparent when dry and spraying the mixture on to a base 1 before the adhesive is set.
Patent GB-246905-A (GB)
Title: Improvements in automatic regulating apparatus for electrical supply systems
IPC: B23K9/133
Filed: 1924-11-03
Abstract: 246,905. Smyser, J. S. Nov. 3, 1924. Regulation, automatic. - In apparatus of the kind wherein a controlling part is moved by a pair of differentially operating motors, the moving part controls the current in a circuit independent of that supplying the motors, one or both of which has or have auxiliary windings in series with the controlled circuit. The motors are shunt wound and normally revolve at equal speeds, the field turns being proportioned to compensate for the introduction of the auxiliary windings. In the circuit shown, in Fig. 6, both motors have auxiliary windings, one 39 opposing the field of the Motor M. the other 40 strengthening the field of the motor M'. A resistance 43 oppositely and simultaneously varies the current in the windings to adjust the relative speeds. The invention is described in application to an electric welding circuit, and in the embodiment shown in Fig. 2 the motors are oppositely mounted on a baseplate, and by means of differential gearing turn a grooved wheel 9 to feed or retract the electrode E, carried on the supply drum 21, maintaining the arc current at the value at which the motors have equal speeds. The electrode is held against the wheel by a spring- pressed idle wheel which may be withdrawn when the electrode is to be manually adjusted by an electromagnet controlled by a switch on the weld. ing handpiece. Specification 246.906 is referred to and shows a similar system operated by and' controlling the voltage across the arc.
Patent GB-958215-A (GB)
Title: Improvements in or relating to electron discharge devices having target electrodes and to circuit arrangements embodying such devices
Inventor: KREUCHEN KARL HEINZ ROBERT CHR
IPC: H01J29/41
Filed: 1959-07-30
Abstract: A dielectric target, for use in a television camera tube, has a cavitated surface, the cavities being deep relative to their width and/or having steep or undercut side walls. The target may be of CORNING 0080 lime soda glass, 5 microns thick, with the uneven surface produced by a layer of similar or coloured powdered glass or a ceramic applied thereto by settling from a suspension.  For example, powdered glass, prepared by ball milling crushed glass and sieving to obtain a particle size of less than 7 microns, may be suspended in distilled water containing strontium nitrate and potassium silicate, suitable proportions being given.  The target is immersed in this suspension and the powdered glass is allowed to settle. The powdered glass may be caused to adhere to the target by sintering or by the prior application of a glass solder. Alternatively the cavitated surface may be produced by etching.
Patent GB-803128-A (GB)
Title: Improvements in or relating to a display for navigational instruments
Inventor: PARSONS JAMES STUART
IPC: G01C21/20
Filed: 1956-08-27
Abstract: 803,128. Aircraft instruments. CANADIAN PATENTS & DEVELOPMENT Ltd. Aug. 27, 1956, No. 26198/56. Class 4. [Also in Group XIX] A navigational instrument comprises a framesupported azimuth dial 101, a pair of thin transparent strips 105, 106 constrained to move in accordance with the North-South and East-West components of motion of a craft to indicate a reference position at the intersection of lines inscribed along their lengths, a heading- indicating disc 110 with lines inscribed along a diameter to indicate craft-heading direction against the aximuth dial 101 and means for driving the disc 110 whereby the relation between the heading direction and the direction along which the reference position lies relative to the centre may be observed. A transparent graticule 107 fixed to the azimuth dial 101 has radial and concentric graduations and a rotatable dial 103 has diametrically opposed index marks for wind direction and vector direction respectively, joined by a line 104 which may be a groove in a transparent disc or a stretched wire. Similar information may be displayed optically or by an electron beam on a luminescent screen.
Patent GB-200470-A (GB)
IPC: H01T13/46
Filed: 1922-09-29
Abstract: 200,470. Bosch Akt.-Ges., R. July 5, 1922, [Convention date]. Sparking - plugs. - A metal sleeve b, of high thermal conductivity, surrounds the central electrode, and is constructed of deformable elements arranged so that the expansion due to heat does not tend to open the joints of the plug. Preferably the sleeve is combined with a body portion c. The material k connecting the portions b, c is, in this case, made thin, so that, when the sleeve b expands, the neck or diaphragm k is bent. The portion c is formed with sharp edges h, i on its upper and lower surfaces. In modifications, the sleeve b itself is helically, longitudinally or transversely slotted, the diameter of the sleeve being less than the bore in the surrounding insulator.