baber/WOPTO huggingface dataset:
Patent GB-1006993-A (GB)
Title: Improvements in or relating to insulation for splices in electrical conductors
IPC: H02G15/196
Filed: 1964-08-21
Abstract: A splice between electrical conductors is insulated by applying a layer of room temperature vulcanizable silicone rubber, at least one layer of self-adhering silicone rubber tape and a layer of room temperature vulcanizable silicone rubber on the outside of the tape. A preferred formulation of the silicone rubber used in the first layer consists of 100 parts by weight of a partially tri-methyl silyl and blocked polydimethyl siloxane polymer 6 to 8 parts by weight of a silica filler having a surface area of about 200 sq. metres per gram, 1 to 3 parts by weight of a hydroxy end-blocked phenyl methyl siloxane liquid having a viscosity in the range 400 to 850 c.s at 25 DEG  C. and containing 3.5 to 5% by weight of silicon bonded hydroxyl groups, 65 to 75 parts by weight of an iron oxide filler and 9 to 11 parts by weight of methyl triacetoxy silane.  A preferred formulation of the outer layer of room temperature vulcanizable silicone rubber comprises 102 to 104 parts by weight of a hydroxy end-blocked polydimethyl siloxane liquid having a viscosity in the range 10,000 to 15,000 c.s. at 25 DEG  C and containing 0.08% by weight of silicon bonded hydroxyl groups, 3 to 5 parts by weight of a hydroxy end - blocked phenylmethyl siloxane liquid having a viscosity in the range 400 to 850 c.s. at 25 DEG  C. and containing about 3.5 to 5% by weight of silica bonded hydroxyl groups, 13 to 17 parts by weight of polydimethylsiloxane liquid having a viscosity of about 1000 c.s. at 25 DEG  C., 18 to 22 parts by weight of carbon black, 8 to 10 parts by weight of methyltriacetoxy silane and 0.04 to 0.06 parts by weight of dibutyltin diacetate.  Specifications 859,284, 972,900, 975,603 and 990,107 are referred to.
Patent GB-410887-A (GB)
Title: Improvements in or relating to trunk communication cable installations employing amplifiers such as long distance telephone cable installations
IPC: H04B3/32
Filed: 1932-12-12
Abstract: 410,887. Cables. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Dec. 12, 1932, No. 35229. Convention date, Dec. 12, 1931. [Class 36.] To reduce magnetic cross talk between the twin core leads of a communication cable, some or all of the twin core leads are formed as spiral quads, each of which has its diagonally opposite conductors connected directly in parallel, so that the four conductors constitute one transmission channel only. Electrostatic cross talk between the twin cores may be prevented by conductive screens.
Patent GB-653819-A (GB)
Title: Improvements in or relating to optical systems
IPC: G02B13/00
Filed: 1947-12-31
Abstract: 653,819. Photographic objectives. CYCLOPTIC ANSTALT FUR OPTIK UND MECHANIK. Dec. 31, 1947, No. 35271. Convention date, Oct. 25, 1946. [Class 97 (i)] A photographic objective consists of two parts arranged at a fixed distance apart, both parts contributing to the correction state of the objective, the rear principal plane of the front part 1 being situated at least approximately in the front focal plane of the rear part 5 so that the front part substantially determines the aperture of the system and the distance of the image from the last surface of the system, and the rear part determines the focal length. The arrangement is preferably such that principal rays 31 are incident normally on the image plane 6. The part 5 may comprise several lenses. A modification is described comprising the addition of a second part 5 before the part 1 for copying at unit magnification and one in which two systems are used back-to-back.
Patent GB-843185-A (GB)
Title: Process for sizing textile filaments
IPC: D06M15/267
Filed: 1956-11-19
Abstract: Textile filaments are sized with a non-aqueous solution of a benzine soluble copolymer produced from (a), an acid ester of an a , b -ethylenically unsaturated aliphatic dicarboxylic acid with an alcohol containing more than 8 carbon atoms and (b), a neutral ester of a vinyl compound having an alkyl radical which contains more than 8 carbon atoms and an additional copolymerizable vinyl compound, (c). The term "vinyl" compound includes those compounds containing the group CH2\CH- in which one or more hydrogen atoms may be substituted. Compounds in the category (a) may be produced from maleic, fumaric or itaconic acids and decyl, dodecyl or octadecyl alcohols.  Specified compounds for category (b) are vinyl stearate, isopropylcyclohexyl acrylate, dodecyl methacrylate and di (dodecyl) fumarate and for category (c), styrene and substituted styrenes, butadiene, isobutylene, vinyl acetate, ethylacrylate, methyl methacrylate and vinyl ethers.  The proportions of the ingredients are such that the copolymers remain benzine soluble.  Water-repellency may be conferred by including paraffins or waxes in the composition.  Specification 783,677 is referred to.ALSO:Textile filaments are sized with a non-aqueous solution of a benzine soluble copolymer produced from (a), an acid ester of an a , b -ethylenically unsaturated aliphatic dicarboxylic acid with an alcohol containing more than 8 carbon atoms, (b), a neutral ester of a vinyl compound having an alkyl radical which contains more than 8 carbon atoms and (c) an additional copolymerisable vinyl compound.  The term "vinyl" compound includes those compounds containing the group CH2=CH- in which one or more hydrogen atoms may be substituted.  Compounds in the category (a) may be produced from maleic, fumaric or itaconic acids and decyl, dodecyl or octadecyl alcohols.  Specified compounds for category (b) are vinyl stearate, isopropyl-cyclohexyl acrylate, dodecyl methacrylate and di-(dodecyl) fumarate and for category (c), styrene and substituted styrenes, butadiene, isobutylene, vinyl acetate, ethyl acrylate, methyl methacrylate and vinyl ethers. The proportions of the ingredients are such that the copolymers remain benzine soluble. The size may be removed by washing with soap or may remain on the material.  Water-repellency may be conferred by including paraffins or waxes in the composition.  The materials treated may be of cellulose acetate or regenerated cellulose filaments in the form of cakes or cross reels, hanks, warp yarns for taffetas or satins and crepe yarns.  Specification 783,677 is referred to.
Patent GB-1473127-A (GB)
IPC: B62D53/06
Filed: 1974-08-12
Abstract: 1473127 Trailer chassis frames J C S DA SILVA BENTO 12 Aug 1974 [17 Aug 1973] 35351/74 Heading B7B [Also in Division B8] A trailer has an inner load supporting frame 1 pivoted at shafts 7 to an outer frame 8 having wheels 10, the inner frame 1 being connected to the towing hitch 5 of a tractor and the outer frame 8 being engaged by conventional lifting bars 18 on the tractor so as to raise the inner frame from a lowered position shown to a raised, load carrying position. The frames are locked in this latter position by a notch 15 in a bar 13 pivoted to frame engaging a pin 17 carried by frame 8, Engagement of a further notch 16 in the bar 13 with the pin 17 causes, on raising the lifting bars 18, the entire trailer to pivot about the hitch 5 to lift the wheels 10 from the ground.
Patent GB-871127-A (GB)
Title: Method for the production of iron or steel alloys
IPC: C21C7/00
Filed: 1959-10-20
Abstract: A sodium-rare earth metal double fluoride used in the production of alloy steels (see Group II) is prepared by mixing an aqueous solution of rare earth metal chlorides with an aqueous solution of sodium fluoride to precipitate the rare earth metal fluorides which are dried and fused at 1300 to 1400 DEG C. with solid sodium fluoride.ALSO:Alloy steels are produced in a fine-grained, low-sulphur form by preparing an iron-containing melt, adding the alloying constituents, e.g. Cr, Mn, Mo, Ni, W, Nb, Co, Ta, Ti, Zr, B and Si, to it during furnacing and incorporating a complex salt having the general formula MRX4 where M represents sodium or potassium, R represents one or more rare earth metals having an atomic number ranging from 57 to 71 and X represents a halogen, preferably fluorine.  The complex salt is added in amounts up to 51lbs. per ton of steel and may be added to the ladle and/or to p the ingot mould.  The complex salt is formed by fusion of a mixture of rare earth metal halide and sodium or potassium halide (see Group III).
Patent GB-1106525-A (GB)
Title: A hydraulically-operated shift clutch
IPC: F16D25/08
Filed: 1965-08-19
Abstract: 1,106,525. Clutch control. KLÍCKNERHUMBOLDT-DEUTZ A.G. 19 Aug., 1965 [18 Sept., 1964], No. 35631/65. Heading F2L. A clutch release sleeve 11 is operated by a lever 13 pivoted at its outer end 16 to the interior of the clutch housing 14 and engaged by an hydraulic piston 18 acting parallel to the clutch axis. The lever 13 is loaded by a leaf spring 21 to prevent vibration and to retract the piston 18 upon pressure release. The pivot 16 is movable axially by a screw 15 to adjust the working clearance a of the sleeve 11. In order to assist dismantling the lever 13, screw 15 and piston unit 18, 20 may be mounted on a portion 23 of the housing readily removable from the main housing 14.
Patent GB-508081-A (GB)
Title: Improvements in the manufacture and production of peroxides
IPC: C01B15/023
Filed: 1937-12-23
Abstract: 508,081. Alkali metal and hydrogen peroxides. JOHNSON, G. W. (1. G. Farbenindustrie Akt.-Ges.) Dec. 23, 1937, Nos. 35647/37 and 20506/38. Drawings to Specification. [Class 1 (ii)] In a cyclic process for the production of peroxides, e.g. those of alkali metals or hydrogen, by subjecting organic compounds which are oxidizable by molecular oxygen under ordinary conditions in a liquid medium to such an oxidation with the formation of peroxides, separating the bulk of the peroxides formed from the reaction liquid and catalytically reducing the organic oxidation products to the initial oxidizable organic compounds, an essential part of the remainder of peroxide and oxygen dissolved in the reaction liquid is removed prior to the reduction. This may be effected prior to the reduction by treating the reaction liquid with oxidizable substances such as manganous and ferrous compounds, such as ferrous sulphate, or alkaline suspensions of ferrous hydroxide, by treating the reaction liquid with substances which bind peroxides, such as caustic soda, sodium metaborate or sodium carbonate, or by treating the reaction liquids with a catalyst which decomposes peroxides, such as the metals iron, nickel, copper, silver, platinum and palladium and metal oxides and hydroxides such as lead oxide. The decomposition of the peroxide may be effected in conjunction with the removal of dissolved oxygen by carrying out the treatment with the decomposing catalyst in the presence of reduced operating substance, which may be provided by not completing the preceding oxidation step or by branch ing off a portion of the reduced reaction liquid from.the main cycle. This latter method of operation may be modified by treating the liquid with the - decomposing catalyst in the absence of reduced operating substance but in the presence of hydrogen and a reducing catalyst such as palladium or nickel. The reducing catalyst may also serve as a decomposing catalyst.. Dissolved oxygen may also be removed by reducing the oxygen pressure over the reaction liquid, e.g. by contact with an indifferent gas such as hydrogen, or by reducing the pressure. The resulting mixture containing solvent vapour and oxygen may be treated with a solution of the reduced operating substance which by the absorption of oxygon restores the indifferent gas for further use in the process. The gas mixture containing expelled oxygen may also be sucked off by means of a jet pump operated by the solution of reduced operating substance. A plurality of the above methods may be employed. An example is given in which the operating substance is a solution of 2-ethylanthraquinone in a mixture of benzene and methylcyclohexanol. Specifications 440,360 and 465,070 are referred to.
Patent GB-1093229-A (GB)
Title: Regeneration of ion-exchange materials
Inventor: SARD BERNARD ABEL
IPC: B01J49/00
Filed: 1965-08-19
Abstract: In an exhausted mixed bed of ion-exchanger originally in hydrogen and hydroxyl form in which some resin is still in the hydrogen form, the cation-exchanger is completely converted to a metal form to assist the separation into layers for their subsequent regeneration.
Patent GB-1344720-A (GB)
Title: Piperazine derivatives processes for their preparation and compositions containing the same
Inventor: RENTH E-O
IPC: C07D295/04
Filed: 1971-07-29
Abstract: 1344720 Piperazine derivatives BOEHRINGER INGELHEIM GmbH 29 July 1971 [30 July 1970] 35772/71 Heading C2C [Also in Division A5] The invention comprises compounds of formula and their acid addition salts, wherein Ar, Ar 1  are each a fused bicyclic group (in which at least one ring is aromatic and the ring which is not directly bonded to the remainder of the molecule may be carbocyclic or heterocyclic, and saturated or aromatic, provided that Ar 1  may not be heterocyclic. In examples, these compounds are prepared by (1) introducing the ArCH 2 CH(CH 3 )- group into the (Ar 1 -substituted) piperazine; (2) forming the piperazine ring by reacting (a) a bis-chloroethylamine with the corresponding amine, or (b) a substituted ethylenediamine with ethylene dibromide or diethyl oxalate (and in the latter case reducing the thus-formed 2,3-dioxopiperazine derivatine); (3) reducing a compound of the type ArCHClCH(CH 3 )N(CH 2 CH 2 ) 2 NAr 1 . Intermediates otherwise prepared correspond with the formulae ArCH 2 CH(CH 3 )OH, ArCH 2 - CH(CH 3 )O 3 SR (R=Me or p-Ts), ArCHOHCH- (CH 3 )N(CH 2 CH 2 ) 2 NAr 1  and ArCOCH(CH 3 )N- (CH 2 CH 2 ) 2 NAr 1 .
Patent GB-1488809-A (GB)
Title: Washing machines
IPC: D06F37/06
Filed: 1974-10-17
Abstract: 1488809 Washing machines HOOVER Ltd 17 Oct 1974 [27 July 1973] 35903/73 Heading D1A In a front loading washing machine having a perforated clothes drum 10 rotating inside a container 11, liquor deflectors 27 are mounted on the outer end wall of the clothes drum 10 or container 11 to deflect liquor inwards through the gap 25 between the drum and container to prevent blockage by clothing or lint. The deflectors may have two faces 30, for use with reversing drums, and may be attached to the drum, or may be pressed from the drum material. In a modification stationary guide vanes on the stationary container may cooperate with moving vanes onthe drum.
Patent GB-1268850-A (GB)
Title: Improvements in method for obtaining circumferential orientation of magnetic films electroplated on conductive substrates
IPC: H01F10/00
Filed: 1969-07-17
Abstract: 1,268,850. Magnetic structures. GENERAL ELECTRIC CO. 17 July, 1969 [29 July, 1968], No. 35997/69. Heading HlH. [Also in Division C7] A magnetic film less than 15,000 A thick and having a circumferential magnetic orientation, e.g. for a magnetic memory device, is formed upon a conductive wire substrate by electrodeposition, e.g. of Ni-Fe alloy from a plating bath comprising a solution of 98À7 g/l. FeSO 4 - 7H 2 O, 433 g/l. NiSO 4 .6H 2 O, 25 g/l. H 3 BO 3 , 0À25 g/l. each of Na lauryl sulphate and thiourea, and H 2 SO 4  to bring pH to 2, in a rotating linear magnetic field of strength greater than 15 oersteds at the substrate surface. The magnetic field may be formed by positioning a plurality of coils about the plating bath 18 circumferentially relative to the axis of the substrate 27, e.g. two diametrically opposed pairs of coils 20A, 20B and 20C, 20D each energized by 90-degree phase displaced A.C. sources 32, 36 respectively to rotate the field preferably at a frequency of one revolution per 10Š layer of magnetic film electrodeposited; alternatively three coils may be spaced 120 degrees apart about the axis and each energized by a single phase of a 3-phase source, or permanent magnets may be rotated about the periphery. The film may be annealed below 400‹ C. to increase the coercive force of the film. The substrate may be a Au plated tungsten wire, first electrolytically cleaned in a solution of 17 g/l. Na 2 CO 3 , 13 g/l. Na 3 PO 4 .12H 2 O, 7 g/l. NaOH and 0À4 g/l. Na lauryl sulphate, then Cu plated in bath containing 225 g/l. CuSO 4 .5H 2 O, 0À05 g/l. thiourea, 0À5 g/l. naphthol sulphonic acid and H 2 SO 4 , to bring pH to 0À7, then again Au plated, prior to Ni-Fe alloy plating, using Pt anodes throughout. CoSO 4  may be added to the alloy plating bath. Specification 1,183,288 is referred to.
Patent GB-495356-A (GB)
Title: Improvements in or relating to saddle supports for cycles
IPC: B62K19/36
Filed: 1938-03-19
Abstract: 495,356. Saddle supports. GOW, T. H. March 19, 1938, No. 36049/37. [Class 136(iii)] The invention relates to saddle supports for cycles, of the type wherein the saddle is adapted to be lowered by the weight of the rider when the support is released by means of a Bowden &c. control, and wherein the shank 16 of the saddle pillar slides in a tubular member 18 adjustably mounted in the cycle frame, and a depending guide rod 17 engages the lower end 19 of the tubular member 18, one or more compression springs 25, 26 being provided to raise the shank 16 when the saddle is relieved of the weight of the rider. According to the invention, the guide rod 17 and the aperture in the end 19 of the tubular member through which it slides are of square or other cross-section which prevents angular movement of the saddle pillar.
Patent GB-522486-A (GB)
Title: Improvements in or relating to an optical system having a linear source of light
IPC: G03B21/20
Filed: 1938-12-12
Abstract: 522,486. Projector lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Dec. 12, 1938, No. 36205. Convention date, Dec. 15 1937. [Class 75 (iv)] Also in Group XX] In an optical system for converting a linear source of light into a luminous area, e.g., for the projection of films, in which the light from the source is projected by an optical element on to a mirror, the source of light L5, such as a superpressure discharge tube, is arranged in the focal line of a cylindrical parabolic mirror A5 whose directrix X5X5 in the plane perpendicular to the longitudinal axis of, and passing through the centre of, the light source is the axis of revolution of a second mirror whose generatrix is a parabola B5 with axis yy perpendicular to X5X5, and Focus at F" in X5X5 and which reflects the rays from the first mirror to the focus F<SP>11</SP>, the reflected rays being nowhere intercepted by the mirror A5 or the source L5. In a modification, the second mirror is formed by the revolution about the directrix X5X5 of a straight line inclined preferably at 45 degrees thereto, and the light is reflected from the second mirror as a parallel beam. The Specification as open to inspection under Sect. 91 describes also other arrangements in which the mirrors may be of elliptical section, and in which the first mirror may be replaced by a cylindrical lens ; and it refers also to the use of the system for searchlights. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1483139-A (GB)
Title: Apparatus for the production of bevel gears
IPC: B21J5/02
Filed: 1975-09-04
Abstract: 1483139 Forging bevel gears KABEL-UND METALLWERKE GUTEHOFFNUNGSHUTTE AG 4 Sept 1975 [28 Sept 1974] 36481/75 Heading B3H A bevel gear is forged in apparatus comprising a die 1 having an interior space defining the configuration of the teeth, a ram 2 applying the required force to the blank 4, and an axially movable sleeve 3 coaxially surrounding the ram and having a conical extension 6 which in the closed position extends into the die space, the ram diameter being within 20% of the diameter D of the pitch cone of the gear at its smaller end. In the starting position shown, the sleeve 3 is fully lowered, and the blank is spaced from the die bottom by a distance of two to three times the gear module m. As the ram descends, the blank flows laterally to fill the tooth defining  spaces below the sleeve. When these spaces are filled, the sleeve is allowed to rise against a controlled hydrostatic force, to vacate further space in the die at the rate at which the space is filled by further deformation of the blank. The height of the extension 6 is preferably equal to twice the module (equal to the addendum as shown).
Patent GB-822126-A (GB)
Title: Improvements in stereotype mats
IPC: B41N11/00
Filed: 1957-11-25
Abstract: 822,126. Printing surfaces. COLUMBIASOUTHERN CHEMICAL CORPORATION. Nov. 25, 1957 [Nov. 30, 1956], No. 36589/57. Class 100(2) A stereotype mat is comprised of felted cellulosic fibres having dispersed therein finely divided, precipitated, hydrated, porous, flocculated, amorphous, silica of 10 to 200 square metres per gram surface area, the mat having been formed by felting an aqueous slurry of the cellulosic fibres and the silica containing from 10 to 25 parts of the silica per 100 parts of cellulosic fibres. In an example sodium silicate, Na 2 O.3.36SiO 2  diluted to a concentration of 40.6 grams Na 2 O per litre was heated by steam to 75‹C. and discharged into a tank when gas containing carbon dioxide was bubbled through the solution until silica precipitation produced a slurry. The solution was agitated during the carbonation. The slurry was then brought to boiling point by steam and sufficient dialkyl dimethyl ammonium chlcride to establish 0.3% by weight concentration on a dry solids basis was added. The slurry was then washed, alkali removed and acidified with hydrochloric acid to bring the pH value to 4.5. The slurry was then filtered, dried, and milled to produce the required silica. The silica was then mixed with beaten cellulose fibres in a dry weight proportion of 10-25 parts of silica per 100 parts of fibre, agitated, and transferred to a wet paper-making machine and felted out in the form of a web on a screen of the machine. The web may be transferred to a roll upon which it is wound up to the desired thickness, removed and compressed to form a suitable mat..
Patent GB-962610-A (GB)
Title: Indicia and automatic sensing systems therefor
IPC: G11B20/14
Filed: 1962-09-27
Abstract: 962, 610. Statistical apparatus. NATIONAL CASH REGISTER CO. Sept. 27, 1962 [Oct. 9, 1961], No. 36679/62. Heading G4M. [Also in Division B8] Postage stamps are marked with an indicium to indicate their value, the indicia having circular symmetry. In the examples shown in Figs 3b, 3d the outer ring is a clock ring and is present on all indicia, and the inner rings are present or absent to represent the value in binary code, the innermost ring representing the least significant digit. The rings may be ink, magnetic, conductive or embossed. Letters are fed past sensing station 11, Fig. 1 which derives code signals from the indicia irrespective of the orientation of the stamps. The clock ring pulse passes through AND gate 19 and triggers monostable circuits DMV2 to DMV8. DMV2 remains "on" for the whole time that the indicium is passing the reading station and closes gate 19. DMV3 restores to normal half-way through the clock-pulse interval, and DMV4-DMV8 successively restore to normal during the following five code-pulse intervals. The outputs of DMV3-DMV8 are used to produce a train of pulses for shifting the code pulses from station 11 into shift register FF1-FF5. The outputs of FF1-FF5 are connected to decoding AND gates 70-75 &c. The use of indicia comprising a single ring of variable radius and of indicia which are not perfectly circular is mentioned.