baber/WOPTO huggingface dataset:
Patent GB-978279-A (GB)
Title: Electrical switching arrangement
Inventor: ORR EUAN RANNOCH
IPC: H05B39/08
Filed: 1963-10-01
Abstract: 978,279. Switching systems for consumer devices. STANDARD TELEPHONES & CABLES Ltd. Oct. 1, 1963, No. 38620/63. Heading H2H. An incandescent lamp 1 energized from an A.C. supply is controlled by a switching arrangement comprising switches 4, 5, a rectifier bridge 9 and a silicon-controlled rectifier 10, so that closure of switch 4 operates the lamp at full brightness and closure of the switch 5 allows the lamp to be dimmed to an extent dependent on the instant of switching of the rectifier 10 in each half cycle of the supply. The rectifier 10 is controlled by a timing circuit comprising a capacitor 14 which applies a switching pulse to the gate of rectifier 10 when transistors 15, 16 become (sequentially) conductive, the time taken for this to occur being determined by the setting of a variable resistance 13 so coupled to switch 5 that when the latter is closed the maximum resistance is present in the timing circuit. The minimum resistance value is determined by resistor 12 so chosen that the maximum power rating of rectifier 10 is not exceeded. An L.C. suppressor circuit 6, 7, 8 is provided.
Patent GB-1086714-A (GB)
Title: Cyclic ª‡-perfluoro-di-p-xylylenes
IPC: C07C17/093
Filed: 1964-09-22
Abstract: Poly - (alpha - perfluoro - p - xylylene) is made by vapour phase pyrolysis (e.g. at 650 DEG  C./0.01 mm.) of cyclic (p-CF2-C6H4-CF2-)2. Analogous polymers in which the benzene nuclei are substituted by up to 3 halogen atoms, or alkyl, aryl, alkenyl, carboxy, alkoxy, carbalkoxy or nitro groups are similarly prepared.ALSO:The invention comprises compounds of formula <FORM:1086714/C2/1> in which n is 0-3 and G is a substituent (e.g. Cl or Ph when n = 1) and a process for preparing them by forming the diradical .CF2-C6H4- nGn-CF2. by pyrolysing at 600-900 DEG  C. a compound p-C6H4- nGn(CF2SO2R)2, where R is a C1- 7 hydrocarbon group, and cooling and condensing the diradical in intimate mixture with a fluid medium containing an inert inorganic solvent and kept at above 50 DEG  C.  Starting materials.-2-Chloro-alpha-perfluoro-p -xylylenebis(ethylsulphone) is prepared by reacting with H2O2 the corresponding bis-(ethylthio) compound, itself made from p-C6H4(CF2Br)2 and EtSNa. 2-Phenyl-alpha-perfluoro -p-xylylenebis(ethylsulphone) is prepared analagously (c.f. Specification 1,067,156) starting with 2-phenylterephthalaldehyde; the latter is made by brominating 2-phenyl-p-xylene and reacting with H2SO4 the 2,5-(Br2CH)2C6H3Ph so formed.
Patent GB-1304863-A (GB)
IPC: H01L31/08
Filed: 1970-08-11
Abstract: 1304863 Electrophotographic element CANON KK 11 Aug 1970 [13 Aug 1969] 38642/70 Heading H1K An electrophotographic member comprises a photosensitive layer including a cadmium chalcogen or solid solutions thereof and a photosensitive layer including a compound of formula X 4 YZ 6 , wherein X is Zn or Cd, Y is Si or Ge and Z is S, Se or Te or solid solutions thereof. The layers may be identical or formed separately on a support of Al, Cu or Zn. In the specific embodiments a layer of CdS dispersed in copolyvinyl acetate-chloride is coated on a support and overcoated with a layer of Cd 4 SiS 6  or a mixture of Cd 4 GeSi 6  and Zn 4 GeSi 6  dispersed in copolyvinyl acetate-chloride. In one embodiment, a transparent film of a fluorine-containing polymer or a polyester is fixed to the surface of the member. A fluorescent or semi-conductive layer may be added to the member. The preparation of the ternary compounds is given including the step of treating grains of the compounds with dilute acid to make the grains smooth. Many suitable binders and ternary compounds are specified.
Patent GB-1049773-A (GB)
Title: Improved method for compounding additives into synthetic thermoplastic materials
Inventor: DAVIES ROGER HILARY
IPC: B29C48/76
Filed: 1962-10-12
Abstract: 1,049,773. Extruding thermoplastic materials. IMPERIAL CHEMICAL INDUSTRIES Ltd. Sept. 20, 1963 [Oct. 12, 1962], No. 38697/62. Heading B5A. A method of compounding additives into normally solid synthetic thermoplastic materials comprises feeding the synthetic thermoplastic material into an extrusion machine, injecting a solution or dispersion of the additive or additives in an inert volatile carrier medium into the path of the synthetic thermoplastic material in the extrusion machine to mix therewith; allowing for the removal of substantially all the inert volatile carrier medium as the material passes through the extrusion machine, and extruding the blended material through an orifice or orifices. The additive may consist of a pigment such as carbon black, and the dispersion may contain a surface-active agent.
Patent GB-921960-A (GB)
Title: Improvements in or relating to electrodepositing bright hard gold
IPC: C25D3/48
Filed: 1960-11-14
Abstract: 921,960. Gold electroplating. TECHNIC Inc. Nov. 14, 1960 [Dec. 31, 1959], No. 38961/60. Class 41. A gold-plating solution includes a weak organic acid as buffering agent to give a pH value of 3 to 5.5 and a Nickel (II) chelate of an amino-poly carboxylic acid e.g. ethylene diamino-tetra-acetic acid or nitrilo tri-acetic acid. The weak organic acid may be a hydroxy acid e.g. glycollic, lactic, citric, tartaric or kojic acid. No deposition of nickel occurs in the gold plate. In examples the gold-plating baths include potassium auricyanide, potassium phosphate, tripotassium citrate, citric acid, and nickel nitrilo-triacetate, or #-hydroxyethylene diamino triacetic acid. The gold plates which may be on any base metal, are hard and resist oxidation at temperatures up to 400 to 500 C.
Patent GB-1085895-A (GB)
Title: Process for shrinkproofing wool
IPC: D06M15/564
Filed: 1964-09-25
Abstract: Wool is shrink proofed by forming a polyurea in situ on the wool fibres by serially impregnating the fibres with an aqueous emulsion of an organic diisocyanate of formula <FORM:1085895/C3/1> where R1 is alkyl, alkoxyalkyl, aryl, alkaryl, or aralkyl, or a halogenated derivative thereof, R2 is alkylene or alkylidene with 1-5 carbon atoms and R3 is hydrogen or a radical of formula <FORM:1085895/C3/2> and an aqueous dispersion of a diamine. Suitable di-isocyanates are esters of di-isocyanato caproic, valeric, glutaric, adipic, pimelic or suberic acid.  Emulsifying agents may be used with the di-isocyanate.  Suitable diamines are hexamethylene diamine, n-octyl-L-lysinate dihydrochloride, n-hexyl ornithinate dihydrochloride, tri- or tetra-methylene diamine, piperazine, methyl- or dimethyl-piperazine, and a ,#v-diamino polypropylene oxide.ALSO:The methyl, n-octyl, and phenyl esters of 2,6-di-isocyanato-caproic acid are prepared from lysine monohydrochloride and methyl, or n-octyl alcohol or from lysine dihydrochloride and sodium phenate, followed by reaction of the lysine ester with phosgene.  Ethyl, propyl, butyl, pentyl, hexyl, decyldodecyl, tetradecyl, o-tolyl, or 1,3,5-trichlorophenyl esters may be similarly prepared, using the appropriate alcohol or phenate. By replacing lysine hydrochloride with ornithine hydrochloride, esters of 2,5-di-isocyanato valeric acid may be obtained.  The di-para-toluenesulphonate salt of 2,6-di-amino-n-octyl caproate is prepared by reacting together lysine monohydrochloride, n-octanol and para-toluenesulphonic acid.ALSO:Wool is proofed against shrinkage by forming a polyurea in situ by serial impregnation of wool with (1) an aqueous emulsion of an organic diisocyanate of formula <FORM:1085895/D1-D2/1> wherein R1 is alkyl, alkoxyalkyl, aryl, alkaryl, aralkyl or a halogenated derivative thereof, R2 is C1-C5 alkylene or alkylidene, and R3 is H or <FORM:1085895/D1-D2/2> , and (2) an aqueous dispersion of a diamine.  Preferred di-isocyanates are methyl and octyl esters of 2,6-di-isocyante caproic acid.  The preferred diamine is hexamethylene lamine.
Patent GB-1144291-A (GB)
Title: Thread cutting machine
IPC: B23G1/02
Filed: 1966-09-02
Abstract: 1,144,291. Lathes. CRI-DAN. 2 Sept., 1966 [3 Sept., 1965], No.39379/66. Heading B3T. A thread-cutting lathe comprises a saddle 3 movable against pressure means 26 by a roller 23 and a rotary cam 21 and a cross-slide 4 movable by a control unit 22, the cam having a recess 21c into which the roller may move except during a thread-cutting operation. A main spindle 12 is rotated by motor 7 which, through a clutch 14, rotates a cam drive shaft 16 which can be locked by a brake 18 under electromagnetic or electrohydraulic control. The saddle 3 and the bed 1 carry cylinders 26, 27 containing a common piston 28, 29, 30 which can be locked in either cylinder. The cross-slide 4 is fed inwardly against a spring 31 by the cam 22 actuating a lever 35 to advance a ratchet 39 and hence a cam 38 engaged by a follower lever 46. For boring and internally threading a sleeve P, a button 7a is pressed to start the motor 7 and a button V2a to operate a valve V2 to supply fluid to the cylinder 27 and feed the saddle 3. The roller 23 passes through the recess 21c and a dog T 1  on a panel PP attached to the saddle actuates a switch-unit B to operate a valve V 1 . The piston 29 then advances the boring tool 6. Finally, a dog T2 causes return of the saddle to the end of the travel allowed by the jack 26, thus preventing the roller 23 from entering the recess 21c. (In a modification, the recess is closed with a shutter.) The operator then replaces the boring tool with a thread-cutting tool and engages the clutch 14 by a buton 14a. The thread-cutting operation then ensues with the cam 38 determining successive depths of cut and the cam 21, now engaging the roller 23, determining the pitch of the thread. The cam works against the pressure in the cylinder 26. A disc R coaxial with the cam 38 carries a dog D to actuate a switch C at the end of the thread-cutting cycle. The clutch 14 is thus disconnected, the brake 18 applied, the piston 28 returns the saddle with the roller 23 passing through the recess 21a and the motor 7 is stopped. A similar saddle, cross-slide and tool may be provided on the opposite side of the headstock so that threads may be cut on each end of a long sleeve. The recess in the cam thus allows a sufficient retraction of the saddle to load the long workpieces. In a modification, the saddle is moved by an electric motor driving a rack and pinion gear.
Patent GB-1528622-A (GB)
Title: Electrically conductive compositions and heat-recoverable articles containing them
IPC: C08L71/02
Filed: 1975-09-26
Abstract: An electrically conductive crosslinked polymer formulation is produced by using   a) a polymer material which is elastomeric in the crosslinked state at room temperature, b) a thermoplastic polymer material whose glass transition temperature, if it is amorphous, is above room temperature, and   c) conductive particles  or   ab) a copolymer, which is composed of polymers a) and b) which are chemically bonded to one another, and   c) conductive particles and by crosslinking the polymers or the copolymer ab). Before crosslinking, the polymer material a) has a noticeable initial strength. The crosslinked formulation has an electrical resistance which increases with increasing temperature, at least in a temperature range above the melting point of the components a) and b). Using the formulation obtained, it is possible to create heating elements whose control action continues even when their temperature rises above the melting point of the thermoplastic polymer.
Patent GB-935740-A (GB)
Title: Polymeric organo-tin and organo-silicon compounds
Inventor: REIHS LEONARD JAKOB
IPC: C08F30/04
Filed: 1959-11-23
Abstract: Polymers are prepared by reacting: (a) or <FORM:0935740/IV(a)/1> <FORM:0935740/IV(a)/2> where X is O or NH, A is N or CH, R is H or CH3, and Y1 is an unsaturated group containing a direct chain of at least three carbon atoms with a single ethylenic double bond in the chain, with (b) <FORM:0935740/IV(a)/3> where R1 and R2 are each an alkyl or aryl group and M is Si or Sn, and (c) one or more further compounds of the formula given in (b) or one or more compounds of the formula: <FORM:0935740/IV(a)/4> where R3 and R4 are each alkyl or aryl, M is Si or Sn, and Alk is an alkenyl group such as a vinyl or allyl group, the molar proportions of reactants having hydrogen atoms directly linked to M and of reactants containing ethylenic double bonds in the groups Y1 and Alk being approximately equal.  Catalysts for the polymerization of ethenoid compounds, such as organic peroxides or azo-compounds, e.g. azo bis-isobutyronitrile, and/or ultra-violet radiation. When silicon compounds are used as (b) or (c), elements of Group VIII or their compounds, e.g. platinum charcoal, nickel or hydrochloroplatinic acid.  Heating under pressure, e.g. in a sealed tube, is often desirable and non-oxidizing conditions, e.g. a nitrogen atmosphere, are preferred.  Many examples are given.  Specifications 916,260 and 923,584 are referred to.
Patent GB-1132530-A (GB)
Title: Fluid conveying system
Inventor: KRENKE NORMAN OTTO
IPC: B65G53/66
Filed: 1966-09-06
Abstract: 1,132,530. Measuring fluid-flow. BAKER PERKINS Ltd. Sept. 6, 1966, No. 39737/66. Heading GIN. [Also in Division G4] The total flow of e. g. flour through a conduit 12 is determined by connecting a Bourdon tube 30, sensitive to the pressure at a point in the conduit 12, to the slider of a rheostat in the armature circuit of a motor M, whereby its speed is proportional to the rate of flow and a counter 24, driven by the motor, registers the total flow. The apparatus is associated with conveying flour from a bin 10 to a dough mixer 11 by a blower unit 14.
Patent GB-1068668-A (GB)
Title: Electrical converters
Inventor: OKA KOICHI
IPC: H02M11/00
Filed: 1964-09-30
Abstract: 1,068,668. Cold-cathode tubes; gas plasma Hall plates. HITACHI DENSEN KABUSHIKI KAISHA. Sept. 30, 1964, No. 39749/64. Headings H1D and H1K. [Also in Division H2] In an electrical converter comprising two Hall effect cells connected in cascade a caesiumdoped argon gas plasma is used to provide a low specific resistance material in which the Hall effect occurs. In the D.C. to D.C. converter shown diagrammatically in Fig. 7, plasmas 1 and 1<SP>1</SP> of low and high density respectively are subjected to a magnetic flux generated in an iron core 4, 4<SP>1</SP> by an external power source. An input current 1 1 , flowing in the plasma 1 and electrodes 2, 2<SP>1</SP> of the first Hall effect cell, generates a Hall current 1 n  in a conductor 5. Thus current In provides the input for the second Hall effect cell, the output current 1 2  being drawn from electrodes 3, 3<SP>1</SP>. In a second embodiment (Fig. 8, not shown) the conductor 5 functions as a magnetic winding for the iron core, and the output current 1 2  is passed through a compensating winding (8) to improve the regulation of the output voltage. Other series and parallel connections of the Hall effect cells are envisaged. The conversion ratio of the arrangement depends on the densities of the two plasmas, on the magnetic flux density, and on the geometries of the two Hall effect cells. Detailed mathematical derivations of the conversions ratio, the regulation and the efficiency of the converter are given.
Patent GB-1409542-A (GB)
Title: Method for manufacture of hollow body
IPC: C02F1/68
Filed: 1972-09-01
Abstract: 1409542 Moulding hollow bodies AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 1 Sept 1972 [1 Sept 1971] 39797/72 Heading B5A Hollow spherical bodies are formed by coating a spherical, thermoplastic resin core with one or more layers of carbon materials, coals and inorganic materials and heating to a temperature higher than the melting point of the core so that the core melts and is decomposed or vapourized to leave an empty space within a hardened coating. The core may be polystyrene, polyvinyl chloride, polyethylene, polypropylene, polymethacrylic resins, polyvinylidene chloride, particularly foamed plastics. Coating materials include carbonaceous materials and coals such as petroleum coke, pitch coke, charcoal and carbon black, resins, inorganic materials, e.g. clays, diatomaceous earth, feldspar, cements, limes, gypsum, glass, &c.
Patent GB-986739-A (GB)
Title: Process for releasing laminates
IPC: B32B27/00
Filed: 1963-10-09
Abstract: Laminates consisting of a plurality of fibrous sheets bonded together by a thermosetting resin are made by heating and pressing a plurality of such laminates using a separating sheet comprising a sheet of paper having at least one surface sized with an aqueous solution of a water-soluble alkaline earth metal salt or an aluminium salt, the amount of salt on the surface ranging from 0,001-10% of the weight of the dry paper and having its sized side coated with a film of a salt of alginic acid.  The alkaline earth salt may be a magnesium, calcium, strontium or barium salt and may be a chloride, bromide, iodide, acetate, bromate, ferricyanide, nitrate, thiocyanate or sulphate.  The alginate may be a salt of lithium, sodium, potassium, iron or ammonium.  The separating sheet may be impregnated with a thermosetting resin after it has been sized but before it is coated, the resin preferably being the same as is used to impregnate the laminate. The Specification describes laminates of glass fibre sheets impregnated with epoxy resins and kraft paper sheets or sheets of asbestos fibres impregnated with phenol- or cresol-formaldehyde resins, with overlays of metal foils such as copper, silver, gold or gold plated silver foil or overlays of decorative paper impregnated wth melamine-or benzoguanime-formaldehyde resins or ethylenically unsaturated polyester resins.  For smooth surface laminates the surfaces are placed in contact with polished plates of stainless steel, aluminium or glass, pairs of laminates being arranged back to back with a separating sheet between them.ALSO:A separating sheet, used in making laminates, comprises a sheet of paper having at least one surface sized with an aqueous solution of a water soluble alkaline earth metal salt or an aluminium salt, the amount of salt on the surface ranging from 0.001% to 10% of the weight of the dry paper and having its sized side coated with a film of a salt of alginic acid.  The alkaline earth salt may be a magnesium, calcium, strontium or barium salt and may be a chloride, bromide, iodide, acetate, bromate, ferricyanide, nitrate, thiocyanate or sulphate.  The separating sheet may be impregnated with a thermosetting resin after it has been sized but before it is coated, the resin preferably being the same as is used to impregnate the laminate.  The Specification describes laminates impregnated with epoxy resins, phenol- or cresol-formaldehyde resins, melamine or benzoguanime-formaldehyde resins or ethylenically unsaturated polyester resins.
Patent GB-853355-A (GB)
Title: Improvements in or relating to the preparation of fluorine-containing polymeric materials by the catalytic polymerisation of fluorine-containing unsaturated compounds, and the resulting polymeric materials
Inventor: DUCK EDWARD WILLIAM
IPC: C08F14/18
Filed: 1957-12-23
Abstract: Unsaturated fluorocarbons are polymerised in the presence of a catalyst formed by mixing at least one halogen containing compound of a metal of Group IVa, Va, or VIa of the Periodic Classification with at least one organo aluminium compound or aluminium hydride. The aluminium compound may be a molecular compound with an ether, thioether, or amine, or a complex compound with an alkali metal hydride, alkyl, aryl or halide; various other types of aluminium compounds are mentioned.  The other catalyst component is preferably an inorganic halide of a Group IVa metal (e.g. Ti-tetra- or tri-halide); in the example the catalyst components are TiCl4 and Al(i-Bu)3.  The polymerization may be effected in the gas phase or in a liquid medium.  The process may be carried out batchwise or continuously, while methanolic HCl, and aqueous acid and alkali may be used in isolating the polymer. Perfluoroethylene is the preferred monomer.  Other starting materials are perfluoroalkenes and perfluoroalkodienes, and particularly compounds of formula RF-CF=CF2 wherein RF is perfluoroalkyl or perfluorocycloalkyl as well as perfluoro compounds in which one or more F atoms is replaced by other halogen or H; specified are perfluoro propylene, -n-butylene, -cyclohexene, -hexenes, -heptenes and -octenes, fluorostyrene, fluoro a  methylstyrene, perfluorobutadiene and trifluorochloroethylene. Perfluoroethylene for example, may be copolymerised with another perfluoro compound or alternatively with a minor proportion of an a olefine such as ethylene. Fluorocarbons which have been termed "inorganic olefins," e.g. perfluoro (methylene methylamine), are also mentioned.  According to the Provisional Specification, the polymerization catalyst may be formed by mixing at least one compound of a Group IVa, Va, VIa, VIIa or VIII metal with at least one component of the following kind: (a) an organo compound or a hydride of a Group I, II or III metal, Sn or Pb; (b) an organic boron compound or an addition complex thereof; (c) a Group I, II or III metal, Zn or Al or an alloy thereof.  Specifications 799,392, 799,823, 801,031 and 817,308 are referred to.
Patent GB-1387225-A (GB)
Title: Rack and pinion steering gears
IPC: B62D3/12
Filed: 1973-08-23
Abstract: 1387225 Power-assisted steering mechanism GENERAL MOTORS CORP 23 Aug 1973 [30 Oct 1972] 39986/73 Heading B7H [Also in Division F2] A rack and pinion steering gear comprises a housing 12 having a longitudinal bore 14 and a cross bore 16, a rack guide tube 22 received within the longitudinal bore 14 and having an outer diameter so related to the diameter of the longitudinal bore so to permit predetermined limited bodily adjusting movement of the tube within the bore in directions extending both radially and tiltably relative to the axis of the bore, injection-moulding passages 74, 76, 78 defined in the housing 12 and tube 22, a pinion 40 and pinion shaft rotatably received within the cross-bore 16 with the pinion meshing a rack 26 reciprocably received within the guide tube 22, and in situ injection-moulded retainer structure within the passages, interconnecting the tube 22 and the housing 12 and maintaining a radially and tiltably adjusted relationship therebetween. The pinion shaft is mounted in bushings 44 which are received in enlarged counterbores 46 in the housing, the bushings 44 being urged in the direction of the rack 26 by a flat blade-type spring 70. The mechanism may be fluid power operated, and in a construction shown in Fig. 4, motivation of a valve member 106 takes place by virtue of axial displacement of the pinion shaft and pinion 38<SP>1</SP>, which arises due to the helical teeth thereof meshing with the complementary teeth of the rack member, which is held against reciprocation.
Patent GB-1441511-A (GB)
Title: Method and apparatus for removing textile fibre from a compacted bale
IPC: D01G7/10
Filed: 1974-09-16
Abstract: 1441511 Bale openers PIEDMONT AMERICAN CORP 16 Sept 1974 [24 Oct 1973] 40220/74 Heading D1N A method of removing textile fibre from a bale comprises raking across a face of the bale while loosening fibres of the bale with repeated short quick strokes and while stripping a layer from the bale. Apparatus to perform this method has a rake with tines 20 which is supported adjacent a face of the bale with means to move the tines in repeated short strokes along a closed path, Fig. 3, while moving the tines across a face of the bale. The rake is located on a frame together with a second rake so that two bales are acted on simultaneously to loosen the fibres while reciprocation of the frame removes a fibre layer from each bale alternatively and deposits it on a conveyor 86. The tines are mounted on a system of levers operated by two eccentric discs, Figs. 9 and 10. The bales are supported on plates 95 which are incrementally raised with each traverse of the rakes. The plates with a bale are loaded into the apparatus on a trolley 96. A control circuit is illustrated, Fig. 15, (not shown), with contact switches to reverse movement of the rake carrying frame and operate raising of the bales. A plurality of such apparatus may be located along the fibre delivery conveyor 86 to produce a fibre blend.