baber/WOPTO huggingface dataset:
Patent GB-993733-A (GB)
Title: Improvements in or relating to disc brakes
Inventor: RODWAY JOHN
IPC: F16D55/30
Filed: 1962-06-19
Abstract: 993,733. Disc brakes. AUTOMOTIVE PRODUCTS CO. Ltd. May 27, 1963 [June 19, 1962], No. 23613/62. Heading F2E. In a disc brake a fixed brake pad 13 is adapted to engage one side of a brake disc 10 which is slidably mounted on but rotatable with a shaft and a second brake pad 24 adapted to engage the other side of the brake disc is urged towards the disc to apply the brake via lever mechanism 38 34, 23, 33 so arranged that the drag applied to the second brake pad by the disc increases the pressure exerted on the disc by the pads. The lever mechanism comprises a main lever 23 formed by a pair of interconnected flat metal plates 19 supported at one end for movement in a direction parallel to the plane of rotation of the brake disc and a link 33 formed by plates 29 is pivoted to the main lever 23 adjacent its other end to the fixed support 14, the link 33 being so inclined to the plane of the disc 10 that the drag applied to the second brake pad 24 by rotation of the brake disc 10 in the direction of the arrow D in Fig. 1 tends to rotate the link 33 about its pivot on the bracket and urge the end of the lever 23 to which it is connected towards the brake disc 10. The main lever 23 is actuated to apply the brake by an applying lever 34 pivotally mounted at 35 in the bracket such that the applying lever 34 acts on a pin 22 connecting the plates 19 to the plates 29 to pivot the main lever 23 about a roller 21 which engages a screwed stem 25 and simultaneously turns the link 33 about its pivot on the bracket. The main lever 23 is urged away from the brake disc by a tension spring 42 and provision is made to enable compensation for wear of the brake pads by means of a pawl-and-ratchet mechanism 43, 44. In order to provide assistance also in the other direction of rotation of the brake disc, the main lever 23 is provided with a cam edge 39 which, when the brake is applied with the brake disc rotating in the opposite direction to the arrow D in Fig. 1, is urged by the drag against a pin 41 extending between the sides of the bracket 14 and tends to slide on the pin so as to urge the main lever 23 towards the disc.
Patent GB-705719-A (GB)
Title: Complex metal tetra-phenyl boron salts
IPC: C07F5/02
Filed: 1951-10-10
Abstract: Sodium tetraphenyl-boron, in which the phenyl radical may be substituted, is prepared by reacting the required phenyl magnesium halide with boron fluoride, and salting out the reaction mixture with sodium chloride, or by reacting the required phenyl sodium with boron fluoride.  The sodium in the sodium tetraphenylboron obtained may be replaced in known manner by other monovalent cations, e.g. by potassium, ammonium, rubidium or caesium.  In an example, sodium tetraphenylboron is prepared by reacting boron fluoride and phenylmagnesium bromide and adding sodium chloride to an ethereal solution of the reaction mixture.  Lithium tetraphenylboron is also referred to.
Patent GB-184707-A (GB)
Title: Improvements in or relating to the heels of boots and shoes
IPC: A43C13/02
Filed: 1921-09-06
Abstract: 184,707. Greaves, G. Sept. 6, 1921. Countersunk tips.-A heel a, Fig. 4, is recessed at b and provided with a renewable spring- mounted tip c. The spring, Fig. 10, is provided with a semicircular part d to engage a groove in the tip c and with extensions d<3>, d<1> which are shaped to the heel proper.
Patent GB-1293616-A (GB)
Title: Switching circuit for providing current
IPC: G05F1/10
Filed: 1970-05-15
Abstract: 1293616 Thyristor circuits RCA CORPORATION 15 May 1970 [19 May 1969] 23668/70 Heading H3T [Also in Division H2] In an A.C. circuit having a thyristor, e.g. a triac, 18 with a firing control circuit 22, 24, 26 and controlling the supply to a load, e.g. an incandescent lamp 10, the triac is protected by a switch 30 which short-circuits the triac when the current through it exceeds a predetermined value. The switch 30 may be a magnetic reed contact unit which is actuated by the magnetic field set up by a radio frequency interference suppression coil 16. Alternatively a thermally actuated switch may be used.
Patent GB-1218414-A (GB)
Title: Fluidized bed process for the simultaneous preparation of 1,2-dichloroethane, 1,1,2-trichloroethane, 1,1,2,2-tetrachloroethane and pentachloroethane
Inventor: ANTONINI ALBERT
IPC: C07C19/055
Filed: 1968-05-17
Abstract: 1,218,414. Oxychlorination process. PRODUITS CHIMIQUES PECHINEY - SAINTGOBAIN. 17 May, 1968 [19 May, 1967], No. 23672/68. Heading C2C. 1.2 - Dichloroethane, 1,1,2 - trichloroethane, 1,1,2,2 - tetrachloroethane and pentachloroethane are produced by passing a gaseous mixture comprising an ethylene and vinyl chloride mixture containing at least 15 mol. per cent ethylene and at least 7 mol. per cent vinyl chloride, HCl and an oxygen-containing gas through a reaction zone containing a fluidizedbed catalyst at 300 to 370 C. The catalyst may be supported on silica, alumina, magnesia, graphite, activated carbon, an aluminosilicate or clay, having an average surface area greater than 1 m2/g. The gaseous mixture may also comprise 1,2 - dichloroethane in a molar ratio of 1,2 - dichloroethane to ethylene and vinyl chloride of less than 2. Chlorinated ethylenes may be produced as by-products.
Patent GB-187413-A (GB)
Title: Vehicle steering wheel lock
IPC: B60R25/021
Filed: 1921-09-06
Abstract: 187,413. Marks, E. C. R., (Karlok Manufacturing Co.). Sept. 6, 1921. Guarding against unauthorized use.-A sleeve 11 fixed to the hub 14 of the steering hand-wheel has teeth 15 adapted to be engaged by similar teeth on a sliding sleeve 17 carrying a bolt 19 controlled by a lock. The sleeve 17 is prevented from rotating by the engagement cf a lug 23 with a slot 22 in a stationary sleeve 12 secured to the steering-column. In the position shown, the bolt 19 is entered in a hole in the sleeve 12 to secure the sleeve 17 in its lower position. When the bolt 19 is retracted and the sleeve 17 raised until it engages the teeth 15, the bolt can be shot into one of a number of holes 21 in the sleeve 11 so locking the sleeves 11, 17 together and preventing the rotation of the steering-wheel. In a modification, the inter-engaging teeth on the sleeves are covered by an extension of the sliding sleeve.
Patent GB-1170640-A (GB)
Title: Process for Continuously Molding Thermoplastic Resin into Patterned Webs and Apparatus therefor
IPC: B29C48/08
Filed: 1967-05-23
Abstract: 1,170,640. Thermoplastic nets. E.I. DU PONT DE NEMOURS & CO. 23 May, 1967 [23 May, 1966], No. 23835/67. Heading B5B. A patterned thermoplastic web 10 is made by passing the molten resin under pressure along a laterally confined path 26, substantially without pressure drop, the path terminating in an outlet passage 28, from the mouth of which it is forced into a patterned casting surface 8 which moves past the said mouth, cooling the web on the surface and removing it. The outlet mouth may have a doctor blade 32 which is provided with a slant surface 44 so as to define a wedge-shaped cavity 42, whereby movement of the roll 8 assists in forcing the resin into the pattern. The blade 32 may also have a ridged surface where it contacts the resin. Suitable apparatus is claimed per se. The web produced may be drawn longitudinally and/or biaxially. The pattern on the web may take the form of relief on a continuous base film; such a base film may be removed, e.g. by a blast of hot air at 700-800 C., followed by rapid quenching, to produce an openwork structure of interconnected filaments. A web comprising (a) a plurality of longitudinally extending filamentary shapes joined together at widely spaced longitudinal points relative to the spacing between the filamentary shapes, or (b) a network of strands running parallel and perpendicular to the length of the web, the intersections of the strands being integrally moulded, and wherein, in each case, the remaining portions of the filaments are joined by a thin film, are claimed per se. A long list of suitable thermoplastic resins is specified, with optimum temperatures for extruding and drawing them.
Patent GB-1381789-A (GB)
Title: Line sharing video receiver employing delay system
IPC: H04N7/08
Filed: 1972-05-22
Abstract: 1381789 Television WESTINGHOUSE ELECTRIC CORP 22 May 1972 [21 June 1971] 23881/72 Heading H4F In the line sharing video system of Specification 20150/72 it is noted that the one-line delay circuit DS, Fig. 2, can have a bandwidth substantially less than that of the incoming video signal without reducing resultant picture quality. It is proposed that cheap mass produced PAL delay lines be used. In application to a colour receiver, the chroma carrier and sideband are filtered off and passed through on circuit equivalent to that of Fig. 2 (Fig. 7, not shown). Small delay circuits can be placed in the feed to gate 5, CR1, GR2 to compensate for circuit delays (not DS) in the other gates. The PAL delay line has the bandwidth shown in Fig. 5 and single, upper or lower, sideband modulation of the video signal on a 3À6 MH, carrier is used for the signal applied thereto (Fig. 6, not shown).
Patent GB-373868-A (GB)
Title: Improvements in apparatus for turning incorrectly-disposed cigarettes on their feed to a packeting machine
IPC: B65B19/06
Filed: 1931-08-25
Abstract: 373,868. Arranging cigarettes for packeting. UNIVERSELLE CIGARETTENMASCHINENFABRIK J. C. MœLLER & CO., 48, Zwickauerstrasse, Dresden, Germany. Aug. 25, 1931, No. 23892. Convention date, March 6. [Class 94 (i).] In apparatus for turning over incorrectly disposed cigarettes for packeting, of the type in which the seam of the cigarette is engaged by a feeler, the feeler is pivotally mounted on a lever subjected to a compound motion. The cigarettes are fed into position by a conveyer chain a and arrive between profiled drums c, d which hold the cigarette for examination, and have a peripheral speed equal to that of the chain. The detecting device is pivotally mounted on a lever e pivoted at f to another lever g. Cams q, o, against which rollers g<1>, e<1> are held by springs n, p, impart a vertical and longitudinal oscillation with quick return movements to the lever, the amplitude of which can be adjusted by a screw m on a lever i carrying the pivot of the lever g. The detecting device comprises a leaf spring or brush x on a holder u pivoted at v to a support s pivoted at r to the lever e. The brush is associated with a nose piece y rounded on the underside, and the parts are yieldingly held in position by springs t, w. The lever e is caused to move so that the upper surface of each cigarette is successively explored during a slow backward movement of the detecting device. If the brush x engages the seam of an incorrectly disposed cigarette, the support s is rocked about its pivot in an anticlockwise direction, and contacts z, z<1> complete a circuit for actuating any suitable mechanism for turning the cigarette over.
Patent GB-836701-A (GB)
Title: Improvements in or relating to boxes and like storage containers for goods
IPC: B65D90/00
Filed: 1955-08-19
Abstract: 836,701. Boxes. KAYE, E., SHARP, J. R., and ARNOT, A. E. R. Aug. 13, 1956 [Aug. 19, 1955], No. 24033/55. Class 18. [Also in Groups XXI and XXX] A container for storing such articles as guided missiles or jet engines has closure means facilitating conditioning of the internal atmosphere and inset areas to locate the tines of a lift fork. The container described has a flexible cover 25 having a sliding fastener connection 27 with the body. The cover is supported by removable ribs 29 and has viewing panels 31. Recesses 14 accommodate the fork tines, and wheels 20, 21 are provided. The missile is located on rollers 35 in cradles 32 supported on resilient blocks 33, and is held by straps 36. The front and rear ends of the missile are engaged by resilient blocks 40. The containers may be stacked by fitting separate cradle members 42 into brackets 41 provided on the ends. Gas inlet and outlet connections, humidity and pressure gauges, an electrical test socket and a manual test handle may be provided at one end, Fig. 4, (not shown). Rollers may be fitted on each end wall to permit the container to be movably suspended on parallel rails. A dessicant container may be provided internally.
Patent GB-317012-A (GB)
Title: Apparatus for the automatic manufacturing of products from pressing
IPC: B30B11/02
Filed: 1929-08-07
Abstract: 317,012. Schr÷der, H., and Verwiebe, W. Aug. 8, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Hopper and plunger machines. - Powdered mixtures are moulded between telescopic die members which are advanced in a column through a tube f traversing heating and cooling chambers h, l. Each die member comprises a mould cavity w, Fig. 4, and a projection v adapted to telescope into the adjacent member. The dies are fed by a ram p. Fig. 1, into cavities n in a disc d by which they are brought, in turn, in front of a screw feeder and then in front of a ram e which pushes the charged moulds into the tube f through a non-return device g. To obtain articles with a grain, different coloured powders are supplied tc the screw from separate hoppers. Pressure is maintained upon the moulds by a tapered portion of the tube f within the cooling chamber f and by a clamp m embracing the split end of the tube. After discharge from the tube, the moulds are separated from the articles and returned to the ram p by a conveyer.
Patent GB-355021-A (GB)
Title: Improvements in or relating to labels
IPC: G09F3/14
Filed: 1930-08-12
Abstract: 355,021. Labels. HICKS, A. F. M., 102, Hackford Road, Brixton, London. Aug. 12, 1930, No. 24136. [Class 73.] Labels for securing to the leads of wireless sets &c. and of the kind comprising a small piece of " ivorine " &c. having slotted attachment holes are provided with a central space 13 on which the user may write or print. The space is preferably made by the application of blocking foil.
Patent GB-163943-A (GB)
Title: Improvements in or relating to machine bearings
IPC: F16C25/06
Filed: 1920-08-20
Abstract: 163,943. Curzons, H. L. Aug. 20, 1920. Roller bearings. - A self-contained bearing adapted to take journal load or end thrust comprises a number of double-conical rollers running on conical races, the outer of which is in two parts a, b screwing together for adjustment. The inner race is grooved at c<3> to receive the middle portions c<3> of the rollers. The parts a, b are locked after adjustment by screws f passed through alternative pairs of grooves in the threaded portions of the parts a, b and, screwing into nuts g. The rollers are spaced by a cage of the form shown in Fig. 4.
Patent GB-284685-A (GB)
Title: Protection of copper apparatus against corrosion by carboxylic acids
IPC: B01J19/02
Filed: 1927-09-15
Abstract: 284,685. Soc. Chimique des Usines du Rh¶ne. Feb. 4, 1927, [Convention date]. Carboxylic acids. - Apparatus of copper or of materials the basis of which is copper, is protected from corrosion by carboxylic acids by securing the absence of free oxygen or of bodies capable of exerting an oxidizing effect such as cupric acetate. Oxidizing materials are removed by electrolysis precipitation or by the addition of reducing agents such as hypophosphorous, or sulphurous, hyposulphurous acids or their salts, aldehydes, ketones or very oxidizable polyphenols. Dissolved oxygen is removed by usual methods, such as boiling or passing a stream of inert gas through the liquid or by adding a reducing-agent which may also destroy oxidizing compounds. Access of free oxygen is avoided by a film of a suitable oil on the surface or by using an inert atmosphere over the surface. Any solids employed with the liquid are, freed from occluded oxygen by a stream of inert gas. The apparatus should not be opened to the air (for instance for repairs &c.) without first removing all acid, for instance by washing with water freed from oxygen, which may be stored under a layer of oil. The invention is applicable to all chemical or physical operations with carboxylic acids, particularly acetic acid and its homologues, such as distillation, extraction, concentration, transport, acylatron, dissolving &c. The Specification as open to inspection under Sect. 91 (3) (a) contains an example in which dilute acetic acid to be concentrated bv extraction with ether is first passed through a column of iron turnings to remove cupric acetate and dissolved oxygen, a layer of oil being placed on the liquid surface and the ether is also freed from oxygen; the whole apparatus is filled with a gas free from oxygen such as " gasogen gas." The concentrated acetic acid obtained is free from copper. In another example acetic acid is concentrated by distillation using a gas free from oxygen and sodium bisulphite as reducing agent. In both examples the apparatus is of copper. This subject-matter does not appear in the Specification as accepted.
Patent GB-934254-A (GB)
Title: Production of high density sintered uranium oxide
Inventor: RAWSON HAROLD
IPC: G21C3/62
Filed: 1959-07-15
Abstract: Sintered uranium dioxide for use as a nuclear reactor fuel, is obtained by mixing powdered uranium oxide in the composition range UO2,1 to UO2,25 and having a surface area of about 2 square metres per gram, with a water solution of a platinum salt in an amount sufficient to provide a pasty mass containing up to 0,1% of platinum by weight based on the uranium oxide, heating the mixture in an inert atmosphere to decompose the salt to produce a mass of the oxide with platinum uniformly dispersed over the surface of the particles, compacting the oxide to form a coherent body and sintering the body in an inert atmosphere at 1400 DEG C.  The sintered body may be heated at 1200 degrees in hydrogen to reduce the oxide to uranium dioxide of stoichiometric ratio.  A surface area of 2 square metres per gram corresponds to a particle size of less than 0,5 micron.  The inert atmosphere may be provided by argon, and the platinum salt may be (NH4)2PtCl6.  Compacting pressures of 20 to 40 tons per square inch may be used.
Patent GB-622200-A (GB)
Title: Improvements in electro-plating with silver
IPC: C25D3/46
Filed: 1945-09-20
Abstract: 622,200. Electrodeposition of silver. THORNTON, A. A. (Cleveland Graphite Bronze Co.). Sept. 20, 1945, No. 24373. [Class 41] A metal article is pretreated by plating with a thin layer of nickel and a silver strike, before being mounted as a cathode and immersed in a plating bath, the article or the electrolyte or both being kept in motion. The electrolyte contains 30 to 70 grams per litre of silver cyanide, 30 to 70 grams per litre of alkali metal cyanide, 40 to 80 grams per litre of alkali metal carbonate, and 5 to 30 grams per litre of alkali metal hydroxide. The article 3, after the pretreatment, is mounted on a rack 14 rotated at 80 r.p.m. (for a 3-inch diameter tube) by a motor 6, and supplied with current through a commutator 9, the electrolyte 15 being circulated over it through an opentopped tank 16 and a chamber 4 by a pump 1. Silver rods 5 suspended from the sides of the tank 16 constitute the anode. A preferred bath contains, in grams per litre, 40 to 50 of silver cyanide, 35 to 40 of potassium cyanide, 40 to 50 of potassium carbonate, and 10 to 14 of potassium hydroxide. Rate of deposition is of the order of 0.012 to 0.020 inches per hour at a current density of 75-200 amps per square foot and a temperature of 40-60 C., the final thickness ranging up to 0.250 inches. In a modification for plating the inside of a tube, the anode is a fixed rod arranged within the rotating tube on a bracket attached to the side wall of the tank 16. Before any of the plating steps, the article is passed through solvent degreasing, alkali degreasing and acid pickle baths, and while still wet with acid it is rinsed in a dilute solution of acid. Before drying, it is passed to the first nickel bath containing preferably nickel chloride in high concentration, acidified slightly with hydrochloric acid and held at a temperature of from 85 to 100 C. A preferred bath for the silver strike contains, per litre, 2 grams silver cyanide and 40 grams potassium cyanide and is operated at a current density of from 40 to 150 amps per square foot and a potential of 6 to 8 volts. The current is already on when the article is submerged. Parts not to be plated may be masked by rubber or organic coatings.
Patent GB-717306-A (GB)
Title: Improvements in or relating to surgical instruments
IPC: A61B17/32
Filed: 1952-09-30
Abstract: 717,306. Surgical forceps. WEIHMANN, M. Sept. 30, 1952 [Oct. 5, 1951], No. 24407/52. Class 81(2) An instrument for enucleating the eyeball comprises a pair of forceps 10 having gripping jaws 11, 12, one of which, 12, has a rounded end 13 extending the full width of both jaws. Both jaws are of channelled form and the lower one 12 accommodates a sliding blade 14 provided with a handle. The blade slides longitudinally on a stud 21 attached to one of the forceps arms and has a narrow section extending within the channel of jaw 12, so as not to protrude above the gripping surface thereof, and. at the further end, it is curved round to form a broader cutting projection 25 which. as the blade is drawn towards the right, passes along the space between the two 'jaws 11, 12. The jaws are preferably made in arcuate form, in a plane perpendicular to the drawing, so that they may be passed around the back of the eyeball until they can grip the optic nerve. The blade is then drawn along to cut the nerve but this remains gripped by the jaws, so preventing haemorrhage.
Patent GB-880421-A (GB)
Title: Improvements in or relating to the production of esters of bis-(carboxymethylthio)-methane
IPC: C08K5/372
Filed: 1958-07-29
Abstract: Methylene bis-thioglycollic acid esters of the general formula <FORM:0880421/IV (b)/1> in which R represents an alkyl or aralkyl radical are prepared by heating an alkali metal thiosulphate with an alkali metal monochloracetate in an aqueous medium at a temperature below 100 DEG C. for a period of from 15 minutes to 2 hours, thereafter condensing the carboxyalkylthiosulphonate so formed with formaldehyde in the presence of sulphuric acid for a period of from 15 minutes to 2 hours at a temperature which is maintained below 100 DEG C. during the initial and greater part of the reaction, and esterifying the condensation product with an alkyl or aralkyl alcohol in the presence of an inert solvent, such as cyclohexane and preferably with azeotropic removal of the water formed. Examples describe the preparation of the butyl and 2-ethyl hexyl esters of methylene bis-thioglycollic acid.
Patent GB-1009232-A (GB)
Title: Process for the separation of a mixture of organic compounds by means of dual liquid-liquid extraction
IPC: C10G21/04
Filed: 1962-06-26
Abstract: Organic mixtures of hydrocarbons and/or substituted hydrocarbons and/or substituted hetero-aromatic compounds are separated using two solvents, the solvent which is selective for relatively less polar compounds being CwFxAyHz, where w is 4 to 20, x is 8 to 40 y and z are 0 to 5 and A is halogen, chaleogen or nitrogen.  The sources of the mixtures are oil and kerosene fractions which are resolved into saturated and aromatic fractions.  Many solvents for the more polar constitutents are specified, preferred being furfural, triethylene glycol and sulpholane.ALSO:A process for the separation of an organic mixture containing hydrocarbons and/or substituted hydrocarbons and/or substituted heteroaromatic compounds by means of dual liquid-liquid extractions with a first solvent selective for relatively polar compounds and with a second solvent selective for relatively less polar compounds comprises employing as the second solvent at least one compound having the formula CwFxAyHx, wherein w is an integer from 4 to 20, x is an integer from 8 to 40, y and z are zero or integers from 1 to 5, and A represents a halogen atom, a chalcogen atom or a nitrogen atom.  The compounds C7F14Cl2 and C7F14Br2 are prepared from perfluoroheptene-1 and Cl2 or Br2 by irradiation with visible light.  The compound C7F15Br is prepared by heating the silver salt of n-perfluorooctanoic acid with bromine.