baber/WOPTO huggingface dataset:
Patent GB-1216569-A (GB)
Title: Process for the preparation of cyclohexanone oxime and caprolactam
IPC: C07D201/04
Filed: 1968-09-24
Abstract: 1,216,569. Cyclohexanone oxime, caprolactam. FIRESTONE TIRE & RUBBER CO. 24 Sept., 1968 [27 Sept., 1967], No. 45410/68. Heading C2C. Cyclohexanone oxime or caprolactam are produced by contacting chlorocyclohexanone oxime hydrochloride with a mixture of an aromatic hydrocarbon solvent containing no more than one aromatic ring and water, separating and drying the organic layer containing chlorocyclohexanone oxime, hydrogenating the dried layer in the presence of a pretreated palladium on charcoal catalyst, said catalyst containing at least 2% palladium and having been pretreated by heating for 16-24 hours at 150-250 C. in nitrogen or another inert gas, and (a) neutralizing to give cyclohexanone oxime, or (b) adding a second non- aqueous organic solvent and heating the mixture to obtain caprolactam, without separating or isolating any intermediates. The chlorocyclohexanone oxime hydrochloride may be prepared in situ by contacting cyclohexene with nitrosyl chloride in the presence of a slight excess of hydrogen chloride gas at between - 15 and - 50 C.
Patent GB-1429760-A (GB)
Title: Chain saw
IPC: F16H1/10
Filed: 1974-10-23
Abstract: 1429760 Chain saws DESA INDUSTRIES Inc 23 Oct 1974 [22 April 1974] 45856/74 Heading B5L In a chain saw comprising a housing 14, 15, 19, a guide bar 12 mounted on the housing, a saw chain 13 extending around and slidably supported by the guide bar, and chain drive power means such as an I.C. engine or, as shown, electric motor 18 mounted in the housing, the power means drives the saw through a reduction gearing comprising a pinion 43 mounted on a power means drive shaft 36 and meshing an internal gear 43 fast with a chain drive sprocket 54, and the internal gear is surrounded closely by a cylindrical wall 62 of the housing so that the gearing is substantially enclosed to prevent entry of sawdust and chips. As shown, the housing comprises bolted together sections (which may be of moulded plastics, e.g. of polycarbonate material) and includes integral right and lefthand handles 16, 17. A trigger switch (not shown) is included in the handle 16. The guide bar 12 has a chain tensioning slot (29) for engagement with alignment lugs 26, 27 of the housing and is clamped to the housing by a bolt and washer 30, 31 engaging a metal insert 28. The pinion 43 is splined on a motor shaft 36 carrying a cooling fan 42. The internal gear 43 is splined and press-fitted or welded on the sprocket 54 which is journalled and retained, by a bolt and washer 59, 58, on a stub shaft 49.
Patent GB-1372713-A (GB)
Title: Devices for maintaining spectacles in position
IPC: G02C3/00
Filed: 1971-10-01
Abstract: 1372713 Spectacles J BOYER 1 Oct 1971 [9 Oct 1970] 45857/71 Heading G2J [Also in Division A5] A device 1 for maintaining spectacles in position comprises a pad of an elastic material, a bore passing axially through the pad to accomodate one arm 2 of the spectacles, the axial length of the pad being 5-10mm., the pad having an elastic flexible boss of a size suitable to cooperate with the mastoid cavity of the user. A similar pad may be provided for nose-engaging elements of the spectacles. The boss may be grooved or otherwise roughened, and may be hollow and/or contain perfume in solid form, or vitamin F.
Patent GB-1526962-A (GB)
Title: Seals
IPC: G09F3/03
Filed: 1975-11-05
Abstract: 1526962 Seals E J BROOKS CO 5 Nov 1975 45923/75 Heading B6P A locking seal for the operating handle of a fire extinguisher comprises a pin 22, which is received in apertures in the handle and its support, a flexible shackle 28 extending from one end of the pin and a locking socket 26 for the shackle at the other end of the pin. The shackle can be broken by a pull on loop 24, or the pin can be broken by forcible operation of the handle. Preferably pin, shackle, socket and seal are a single piece of plastics material.
Patent GB-926097-A (GB)
Title: Methods for reduction of oxides
IPC: C21B13/12
Filed: 1961-12-22
Abstract: 926,097. Reducing metallic oxides. ELEKTROKEMISK A.S. Dec. 22, 1961 [Dec. 27, 1960], No. 46016/61. Classes 72 and 82. A process for the reduction of metallic oxides in an electric smelting furnace comprises preheating a charge of metallic oxide and reducing agent by hot combustion gases flowing in counter-current to the charge in a system of shaft furnaces arranged above the electric furnace and from which the pretreated charge is continuously or semi-continuously discharged into the electric furnace, the combustion gas being drawn off from each shaft at a point which allows a layer of cold charge in the shaft above the heated zone. As shown, a shaft 1 containing the charge has a device 3 discharging the heated charge through a plurality of shafts 6 into an electric smelting furnace 9. The reducing gas from the electric furnace, after cleaning may be burned in a combustion chamber 19 and the products of combustion discharged into the shaft 1 from a distributer 22. The gases are withdrawn from the shaft through a pipe 23, cleaned and discharged, though, if desired, a part may be returned to the combustion chamber for temperature control. Fuel gas may also be introduced into the combustion chamber by means of a blower 20. A layer of cold charge lies above the pipe 23 and the column of charge in the pipe 6 prevents leakage of gas downwardly from the shaft and upwardly from the electric furnace. There may be one shaft for each electrode in the electric furnace and some reduction of the oxide may take place in the shaft furnace.
Patent GB-1433628-A (GB)
Title: Preparation of meso-1,2,3,4-tetrachlorobutane
IPC: C07C17/00
Filed: 1973-10-03
Abstract: 1433628 Meso-1,2,3,4-tetrachlorobutane production E I DU PONT DE NEMOURS & CO 3 Oct 1973 [4 Oct 1972] 46221/73 Heading C2C Meso-1,2,3,4-tetrachlorobutane is prepared in the liquid phase by contacting trans-1,4- dichloro-2-butane with Cl 2  at 0-120 C. with efficient agitation and in the presence of a freeradical inhibitor and a source providing at least 1 x 10<SP>-3</SP> gm.-ions of chloride ion dissolved per kgm. of reactor solution. Preferably 101-105% of the stoichiometric amount of Cl 2  in gaseous form is contacted with the 1,4- dichloro-2-butane at 70-100 C. with oxygen as the free-radical inhibitor. The preferred chloride ion sources are quaternary ammonium chlorides, quaternary phosphonium chlorides and tert-sulphonium chlorides in which the organic group has 8-20 C atoms. A chlorination-resistant solvent such as CCl 4  may constitute up to 80 wt. per cent of the reaction mass, exclusive of Cl 2 .
Patent GB-1275598-A (GB)
Title: Transistor inverter circuit
Inventor: CHRISTENSEN ALTON OWEN
IPC: H03K19/096
Filed: 1969-09-22
Abstract: 1275598 Transistor pulse circuit SHELL INTERNATIONALE MAATSCHAPPIJ NV 22 Sept 1969 [23 Sept 1968 26 Dec 1968] 46516/69 Heading H3T An inverter circuit has two IGFET's 20, 30 with their drains connected together and to a clock pulse source #, their sources connected together and to a capacitance such as the input capacitance of another IGFET 46, a data input 44 connected to one gate 22, and the said clock pulse source to the other gate 32, at least a part of each data pulse existing during the interval between clock pulses, the part lasting long enough for C40 to discharge through IGFET 20. In operation, a negative clock pulse turns on IGFET 30 and is applied through this IGFET to charge C40. If at the end of the clock pulse, when IGFET 30 has turned off, the data input 44 is negative then IGFET 20 conducts to discharge C40 to the earth potential now existing on the clock pulse line; if the data is at zero volts however, then C40 remains negatively charged. Thus the data signal appears inverted at the output of the circuit, and only a single clock source is required, and no power supply. The main requirement is that the data signal exists for at least as long as the necessary discharge time after the end of a clock pulse, but it need bear no other specific time relation to the clock pulse.
Patent GB-1197536-A (GB)
Title: Improved Photographic Emulsion for the Photosolubilisation Process
Inventor: MOISAR ERIK
IPC: G03C1/492
Filed: 1968-10-02
Abstract: 1,197,536. Photo-solubilization process. AGFA-GEVAERT A.G. Oct. 2, 1968 [Oct. 4, 1967], No. 46701/68. Heading G2C. A photo-solubilization process for the production of photographic images comprises (a) exposing imagewise to actinic light a supported photographic silver halide emulsion layer containing silver halide grains which have been made relatively less soluble in sodium thiosulphate by treatment with an organic compound that is capable of forming a silver salt of lower solubility in water than silver chloride and (b) treating the exposed layer with an aqueous solution of a silver halide solvent to dissolve out the silver halide in the more exposed areas at a rate substantially greater than in the less exposed areas until a positive silver halide emulsion is produced, in which process sensitivity specks are present only inside the silver halide grains of the silver halide emulsion. The silver halide grains consist preferably of a core of a silver halide which is chemically ripened and another layer of unripened silver halide. Chemical ripening with gold and/or sulphur sensitizers is preferred. In the example the complex Na 3 Au (S 2 O 3 ) 2  is used.
Patent GB-1014269-A (GB)
Title: Process for the production of o-aryl o-alkyl phosphorochloridothioates
Inventor: TABOR EDWARD JOSEPH
IPC: C07F9/20
Filed: 1964-11-17
Abstract: O-Aryl, O-alkyl phosphorochloridothioates are obtained by reacting substantially equimolecular proportions of an O-alkyl phosphorodichloridothioate, an alkali metal hydroxide in the form of an aqueous solution containing at least 10% by weight, preferably 10 to 25% by weight, of an alkali metal hydroxide and phenol or a substituted phenol wherein the substituents are Cl, Br, alkyl, alkoxy, C6H5-, C6H5CH2-, or cyclohexyl at a temperature of from 10 to 50 DEG  C., said alkyl and alkoxy radicals containing from 1 to 5 carbon atoms.  Examples are given for the preparation of the following phosphorochloridothioates O-(2-chloro-4-tertbutyl - phenyl) O - methyl -, O - (2,4,5 - trichlorophenyl O - methyl -, O - (2,4 - dichlorophenyl) O-ethyl- and O-phenyl O-ethylphosphorochloridothioate.  O-alkyl phosphorodichloridothioates may be prepared by reacting one molecular proportion of phosphorus thiochloride with one molecular proportion of a suitable alkali metal alkoxide in the corresponding alcohol generally at a temperature of from - 10 to 30 DEG  C.
Patent GB-1280303-A (GB)
Title: Fastener
Inventor: BURCHETT STANLEY WARREN
IPC: A41F1/00
Filed: 1969-09-23
Abstract: 1280303 Clips S W BURCHETT 23 Sept 1969 [30 Sept 1968] 46879/69 Heading E2B A one piece fastener for gripping thin flexible material comprises partly overlapping portions provided with complementary tongue and slot retaining means for fastening the overlapping section together. The fastener has an opening 20 and two overlapping pivoting flap parts 3, 4 flexibly connected to the body, the part 3 having an offset tongue 11 which is passed through a T-shaped slot in the part 4 to retain material passed over the tongue. In a modification the part 4 has a pivoting flap in the slot and in another modfication the pivoting flap parts are duplicated. In a further modification the part with the slot is attached by a narrow strip to the upper portion of the body. (For Figure see next column)
Patent GB-1404987-A (GB)
Title: Transport system having a magnetically supported and guided vehicle
IPC: F16C39/06
Filed: 1972-10-11
Abstract: 1404987 Measuring gap length electrically MESSERSCHMITT-BOLKOW-BLOHM GmbH 11 Oct 1972 [16 Oct 1971] 46969/72 Heading G1N [Also in Division G3] In a transport system having a vehicle 3 supported and guided relative to a track 10 by electromagnets 5, the energization of the electromagnets is controlled according to the magnetic forces exerted by the electromagnets. The magnetic forces may be measured using strain gauges D 1 , D 2  on arms 6, 7 supporting the electromagnets. These electromagnets may be mounted on the vehicle 3 and a fixed rail 10 used, or the rail mounted on the vehicle and fixed electromagnets used.
Patent GB-1333008-A (GB)
Title: Method for preparing glycolic esters
IPC: C07C69/82
Filed: 1971-10-12
Abstract: 1333008 Oligomeric glycolic esters VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY INSTITUT SINTETICHESKIKH VOLOKON 12 Oct 1971 [16 Nov 1970] 47350/71 Heading C2C  Oligomeric glycolic esters are prepared by continuously feeding a particulate aromatic dicarboxylic acid and a gaseous aliphatic glycol having up to four carbon atoms to a reaction chamber to form in the chamber a. melt of oligomeric ester, and continuously withdrawing the melt from the reaction chamber. Preferred acids are terephthalic, isophthalic, and n,n<SP>1</SP>- diphenylmethane dicarboxylic acids and mixtures thereof and preferred glycols are ethylene, 1,3-propylene and butylene glycols. The reaction may be carried out using an esterification catalyst.
Patent GB-1443424-A (GB)
Title: Method and apparatus for production of coated roadstone
IPC: B01J2/12
Filed: 1972-10-13
Abstract: In the method, weighed quantities of moist, uncoated chipping material and bituminous binding agent are brought via a channel (222) into a drum (6) which has been pivoted into the filling position (R1). Subsequently, the drum is pivoted into the horizontal position and connected to an air heater (12) and a suction fan (18). Simultaneously with mixing, i.e. the rotation of the drum at a speed which corresponds to at least 5% of the centrifugal speed, the blowing in of hot air begins, which air is guided off into the open via a pipe (19). As a result, a premature drying of the uncoated chippings and the associated dust formation are prevented. The dust is absorbed by the binding agent before it can escape into the open via the pipe (19). For emptying, the drum is pivoted into the delivery position (R2) and rotated slowly so that built-in worms convey the coated chippings into a waggon standing underneath. <IMAGE>
Patent GB-965164-A (GB)
Title: Preparation of anhydrous sodium sulphate
IPC: C01D5/10
Filed: 1962-12-17
Abstract: <PICT:0965164/C1/1> <PICT:0965164/C1/2> Anhydrous sodium sulphate is prepared by treating a mixture of Kieserite (MgSO4 . H2O) and NaCl with a counter-current of water at 50-85 DEG  C. The process may be carried out in a series of reactor - thickener assemblies (Fig. 1), in which turbid product from a reactor is pumped to a thickener where liquid separates from solid under gravity; or in a continuous screw conveyer (Fig. 2); or by a combination in which Fig. 2 is added at the right of Fig. 1.  (Dashed lines indicate the path of liquid, continuous lines that of solid, and partdotted lines that of turbid liquor).  Na2SO4 crystallizes out from the thickened slurry, while the solution of MgCl2 obtained at the opposite end holds in suspension any insoluble impurities.
Patent GB-1499940-A (GB)
Title: Optical fibre connector
IPC: G02B6/38
Filed: 1976-11-16
Abstract: 1499940 Optic fibre connector BOWTHORPE-HELLERMANN Ltd 16 Nov 1976 [22 Jan 1976] 47750/76 Heading G2J In the two-part connector an array of optic fibres 87 in the right-hand part 12 are arranged to sit between comb elements and over a pin 113 and thus are located on a ramp 122 in spaced slots. The other array of fibres 40 are similarly spaced by comb elements and project beyond the face of a spring element 72. When the two parts of the connector are mated via an axial locating pin 142 and groove 143, the pin 64 of the left-hand part enters a locating hole 139 in the right-hand part and as engagement increases the spring element 72 retracts, allowing the fibres 40 to enter the ramp 122 and they are guided into accurate buttcontact with the ends of fibres 87. The latter may back-up the curve to allow for over-travel.
Patent GB-1040510-A (GB)
Title: Improvements in jet propulsion engines having thrust deflectors
IPC: F02K1/00
Filed: 1964-11-25
Abstract: 1,040,510. Deflecting aircraft propulsion jets. GENERAL ELECTRIC CO. Nov. 25, 1964 [Jan. 9, 1964], No. 47922/64. Heading B7G. An aircraft jet propulsion engine has a horizontal exhaust conduit 4 exhaust outlet with a cut-away portion at its downstream end, through which the exhaust gases may be deflected, and a plurality of deflecting vanes 9a-9e pivotally mounted on axes which are mutually parallel and are spaced across the outlet on a curved line 11. The vanes are pivotable between substantially horizontal and substantially vertical portions to provide respectively, forward propulsion and direct lift, with some reverse thrust. The engine may be located in the fuselage, or in a wing or tail mounted nacelle.
Patent GB-1112369-A (GB)
Title: Scraper conveyors
IPC: B65G19/08
Filed: 1965-11-12
Abstract: 1,112,369. Endless conveyers. GEWERKSCHAFT EISENHœTTE WESTFALIA. 12 Nov., 1965 [15 Dec., 1964], No. 48085/65. Heading B8A. A scraper conveyer 10 comprises scraper irons 2 attached unilaterally in pairs to an endless chain 1 and passes through a curved angle station provided with respective coaxial deflecting rollers 15 mounted on a spindle 16. The part of the conveyer channel forming the curve comprises two guide members 19, 20 with respective sections 17, 18 formed in segment fashion. Similar guide members 19<SP>1</SP>, 20<SP>1</SP> with sections 17<SP>1</SP>, 18<SP>1</SP> are provided for the lower run of the chain 1. Section 17 overlaps section 18 and the angle of the curve can be adjusted by pivoting the sections 17, 18 about the spindle 16, retaining the desired setting by passing a bolt 28 through holes in the members 19, 20, 19<SP>1</SP>, 20<SP>1</SP>.
Patent GB-1437720-A (GB)
IPC: G01K1/14
Filed: 1973-10-16
Abstract: 1437720 Thermostats POTTERTON INTERNATIONAL Ltd 17 Sept 1974 [16 Oct 1973] 48135/73 Heading G1D A probe for a thermostat, for installation within a fluid containing body, comprises right cylindrical temperature sensing rod 1 and, at one end thereof, a detachably connected axially aligned component 14 having a right cylindrical barrel portion and a terminal stop 15 which, in use, prevents the component 14 passing completely through a housing 5, the barrel portion and rod having identical diameters. The probe extends through and is slidably mounted in the housing. The housing 5 may sealingly and slidably mount the probe by means of resilient sealing rings 12 within grooves 11. Thus dismantling of the probe is effected by withdrawing the probe until the stop 15 abuts the inner surface of the wall, the rings 12 then abutting component 14 allowing removal of rod 1. The attachment therebetween is preferably by means of associated male and female threaded portions, as shown. During detachment, the component 14 may be held stationary by either a T head thereof engaging within a slot in the housing 5 Fig. 3, (not shown) or by providing flats thereon for engagement by a spanner, the member 1 then being rotated. Alternatively, the rod 1 may be held stationary, the component 14 being rotated, a lock nut being provided on a male spigot on the member 1. To prevent the component 14 inadvertently passing into the body during disconnection, an aperture may be provided for temporary receipt of a pin Fig. 4, (not shown). Alternatively a pair of flats for a spanner may be provided. The housing 5 and component 14 may be formed from, or coated with, a non-ferrous material. A capillary tube 3 may lead to a bellows actuated device, or an electric switch may be mounted directly on flange 2.
Patent GB-1059376-A (GB)
Title: Improvements in or relating to an internal combustion engine
IPC: F02B19/08
Filed: 1963-12-09
Abstract: 1, 059, 376. Combustion chambers. HOTCHKISS-BRANDT, Dec. 9, 1963 [Dec. 18, 1962], No.48427/63. Heading F1B. In a precombustion chamber engine with a dome-shaped cylinder head, the piston crown has a shallow recess 15 extending from a region c opposite the precombustion chamber transfer passage 12 to a region f beyond the cylinder axis. The passage 12 is frusto-conical with its axis substantially radial to the cylinder head.
Patent GB-1520450-A (GB)
Title: Process and installation for preparing laminates
IPC: B32B17/04
Filed: 1975-11-25
Abstract: 1520450 Laminates STAMICARBON BV 25 Nov 1975 [25 Nov 1974] 48433/75 Heading B5N A cured decorative laminate is produced by progressively and successively depositing on a backing sheet (a) a layer of liquid curable resin, (b) a first layer of glass fibres whereby it becomes impreganted with the resin, (c) a layer of dry particulate material, e.g. sand, (d) a further layer of liquid curable resin, the total amount of resin present in layers (a) and (d) being sufficient to fully impregnate the layer of particulate material, (e) a second layer of glass fibre so that this second layer adheres to the impregnated layer of particulate material, (f) a layer of thixotropic adhesive resin mixture and (g) a decorative layer, e.g. a decorative sheet or particulate material such as pebbles, and curing the assembled layers on a stationary base. In the drawing the laminate is assembled as guide table 7 mounted on trolley 1 having wheels 2 which run on rails 3 mounted on stationary base 6, and whilst still in the plastic state is laid on to the stationary base on which it is allowed to cure. Backing sheet 9, e.g. of impregnated paper, is coated with a metered quantity of liquid durable resin, from supply rollers 12, 13, covered with first glass fibre strip supplied from roller 15, coated with sand from hopper 19 and with further resin from supply rollers 21, 22, covered with a second glass fibre strip supplied from roller 24, coated with thixotropic adhesive resin from feed 27 and coated with stone chippings from hopper 28. Heat loss downwardly from the base may be inhibited by thermally insulating layer 31 and heating elements 32 which may be heated electrically or with hot water or steam may be provided to accelerate curing of the assembled laminate. Rollers 15 and 24 may be supplied with glass fibre material from rolls 33, 34. The resin may be a polyester produced from hydrogenized bisphenol A, propylene glycol, phthalic anhydride, maleic anhydride and fumaric anhydride.
Patent GB-1445464-A (GB)
Title: Method of producing a polyethylene-2,6-naphthalate yarn
IPC: D02J1/22
Filed: 1973-10-19
Abstract: 1445464 Drawing polyethylene-2,6-naphthalate filaments TEIJIN Ltd 19 Oct 1973 48923/73 Heading B5B Polyethylene-2,6-naphthalate filaments are drawn in two stages by passing over a set of two feed rollers at 110-150‹ C., to preheat the filaments, and then to a set of first stage draw rollers at 170-220‹ C. and drawing to at least 5À0 x and 85-95% of the total draw ratio, and then to a set of second stage draw rollers at east 10‹ C. higher of the first set and ranging from 190-250‹ C. where the second stage drawing is effected, and thereafter heating and carrying out further drawing to a total draw ratio of the undrawn yarn of at least 5À5 x . Preferably the filaments are melt spun and the temperature of the atmosphere surrounding the spun filaments is controlled to the point where the atmospheric temperature becomes the secondary transition temperature of the filaments.