baber/WOPTO huggingface dataset:
Patent GB-1238789-A (GB)
IPC: H03D7/16
Filed: 1969-07-23
Abstract: 1,238,789. Superheterodyne circuits. HAZELTINE CORP. 23 July, 1969 [3 Oct., 19681, No. 36934/69. Heading H3F. In an image rejection circuit the signal in put from terminal 10 is applied to two mixers 15a, 15b respectively over circuits 16a, 16b respectively giving a phase-shift of - 45 degrees and + 45 degrees. The local oscillations from local oscillator 11 are applied in the same phase to both mixers. The outputs from the mixers 15a, 15b are combined in a network 18 which gives a phase-shift of -45 degrees to the output of mixer 15a and of + 45 degrees to the output of mixer 15b. It is shown in the Specification that this results in the elimination of the image frequency, provided the local oscillator frequency is greater than the signal frequency : if it is less the two outputs from the mixers have to be subtracted, after being subjected to phase-shifts of -45 degrees and + 45 degrees, for which purpose a transformer may be used (Fig. 7, not shown). Instead of applying phase-shifted signals to the two mixers, the two inputs from the local oscillator may be given phase-shifts of - 45 degrees and +45 degrees (Fig. 1, not shown).
Patent GB-1251902-A (GB)
IPC: H01H1/26
Filed: 1969-05-23
Abstract: 1,251,902. Mechanical interrupters. SEALECTRO Ltd., and S. T. DEAKIN. 14 May, 1970 [23 May, 1969], No. 26498/69. Heading H1N. In rotary programming apparatus having a plurality of switches 12 operable by elements 11 on a rotary member 10, each switch comprises a movable contact blade 23 with its main part disposed outside two fixed contact blades 13 and 18 and having a free end 19 extending around one of the fixed contact blades so as to be movable therebetween by the elements 11, the fixed contact blades 13 and 18 being mounted one on each side of an insulating plate 14 having a channel 15 formed at one end to provide divergent flanges 16 and 17 against which the fixed contact blades bear, and the free end 19 of the movable blade extends into the channel 15 so that its movements in contact with the fixed blades are limited by the flanges 16 and 17.
Patent GB-1252073-A (GB)
IPC: C08G69/26
Filed: 1969-02-19
Abstract: 1,252,073. Coatings. IMPERIAL CHEMICAL INDUSTRIES Ltd. 26 Jan., 1970 [19 Feb., 1969; 18 March, 1969; 15 Sept., 1969], Nos. 8937/69, 14109/69 and 45292/69. Heading B2E. [Also in Division C3] A clean derusted mild steel plate is heated to 350‹C and coated by placing in a fluidized bed of particles of polyoxamide P. The P particles melt to give a layer protective against corrosion. P is made by condensing together at least 1 diamine D and a di-alkyl oxalate E. The D and E are either (a) condensed in the presence of a diol or triol G where R is H, HOCH 2 -, or C 1-4  alkyl, or (b) heated together in a hydrocarbon solvent H, the resulting prepolymer Q being then heated in G. H may be xylene. In process (a) also present may be an ester interchange catalyst, e.g. ZnO or PbO. After any initial reaction, the mixture may be heated to 140‹- 170‹C in an inert atmos, e.g. of N 2 . The alcohol formed in the reaction is distilled off, and P is filtered off, washed with H 2 O or CH 3 OH, and D may be cyclic diamine(s), C 2-12  aliphatic diamine(s), or methylcyclohexylamine, H 2 N(CH 2 ) 8 NH 2 , H 2 N (CH 2 ) 10 NH 2  and/or H 2 N(CH 2 ) 12 NH 2 . E - may be dimethyl, diethyl, di-isopropyl, or di-n-butyl oxalate. G may be glycerol, 1,2-propanediol, 1,2-butanediol, or preferably ethylene glycol. There may be 10-1000%wt G based on D + E. Also present with G may be o-dichlorobenzene. Also present may be delustrants, e.g. TiO 2  pigments, e.g. C black or Cu phthalocyanine, heat stabilizers, antioxidants, light stabilizers, or M.W. regulators. P may be heat-treated, e.g. at >the m.p. of P.
Patent GB-1252276-A (GB)
IPC: G02F1/31
Filed: 1968-11-12
Abstract: 1,252,276. Focal length modulator. THOMSON-CSF. 12 Nov., 1968 [22 Nov., 1967], No. 53704/68. Heading H4F. [Also in Division G2] Apparatus for varying the point of focus of a linearly polarized monochromatic light beam comprises a switchable electro-optic (KDP) half-wave plate and a birefringent lens (calcium carbonate crystal) the operative refractive index of which depending on the plane of polarization of the light output of the electro-optic half-wave plate. A plurality n of switchable electro-optic half-wave plate and birefringent lens assemblies may be arranged in series, and by selectively energizing the half-wave plates the light beam may be focused to 2<SP>n</SP> different points. If the voltages applied to the half-wave plates are not correct the light beam is elliptically polarized and all the light energy is not focused at the selected focal point. To avoid this drawback an additional switchable electro-optic half-wave plate followed by an analyser are disposed after the assemblies and for each optical power value selected (focal point) the number of half-wave plates excited is arranged to be either always even or always odd. The optical power valves may be positive, negative or neutral by utilizing a combination of convergent and divergent birefringent lenses. In a further embodiment a switchable electro-optic quarter-wave plate having a reflective surface which may constitute one of the electrodes is positioned adjacent a birefringent lens, the arrangement having two focal points. By varying the voltages applied to the electro-optic plates the arrangement may be used with monochromatic light of various wavelengths.
Patent GB-1256487-A (GB)
IPC: B65H51/01
Filed: 1970-03-24
Abstract: 1,256,487. Opening tows. TOYO BOSEKI K.K. 24 March, 1970 [29 March, 1969], No. 14326/70. Heading D1F. Substantially non-twisted multifilamentary yarns or tows are separated electrostatically by passing the yarn through a tubular first electrode 5 in contact therewith, and then through a second electrode 6, 8 or 9 without contact, the potential difference between the two electrodes being at least 500v. The second electrode may be frusto-conical (Fig. 2), toroidal (Fig. 3), or a plurality of plates or bars 9. The separated filaments may be gathered in the form of a web, two or more of which may be lapped together.
Patent GB-1258355-A (GB)
IPC: B24B47/25
Filed: 1970-01-09
Abstract: 1,258,355. Grinding. HERBERT LINDNER GmbH. 9 Jan., 1970, No. 1238/70. Heading B3D. A system for advancing a grinding wheel 7 to compensate for trueing, e.g. in a thread grinding machine, comprises a feed spindle 21 and feed nut 22 for a grinding carriage 8, a trueing spindle 16 and spindle nut 15 for a trueing carriage 12, and a gear train 40 connecting the spindle 16 to the feed nut 22 through a gear-wheel 43, angularly lockable by means of an hydraulic brake 44, a further hydraulic brake 52 and a limiting stop 35.being provided for alternatively angularly locking the feed spindle 21. During grinding, the nut 22 is locked against rotation by pressure in the -hydraulic cylinder 44, rotation of a hand wheel 33 allowing feed of the wheel 7 until the stop 35 strikes a fixed abutment 36. For trueing, a hand valve 51 or magnetic valves 28 releases the pressure in the cylinder 44, rotation of a hand wheel 17 or hydraulic advance of a rack 19 feeding, e.g., a diamond trueing tool 14. Gear-wheels 41-43 transmit the feed motion to the nut 22, which advances on the spindle 21, angularly locked by the stop 35 or the brake 52, to feed the carriage 8 towards a workpiece 5, maintaining the wheel surface at a constant spacing from the workpiece axis. Reversal of the brakes 44, 51 then allows a further grinding cycle. An hydraulic piston 23 controlled by the valves 28 allows rapid transverse displacement of the spindle 21 when required, and an insert nut 38 loaded by a spring 37 eliminates backlash in the nut 22.
Patent GB-1258540-A (GB)
IPC: C25D5/28
Filed: 1970-03-26
Abstract: 1,258,540. Making composite strip; joining by rolling; soldering. SIEMENS A.G. 26 March, 1970 [29 March, 1969], No. 15027/70. Headings B3A, B3M and B3R. [Also in Divisions C7 and H1] Parts of Nb and Cu are contacted with each other and heated to 800 to 2500 C. in a vacuum of at most 10<SP>-6</SP> mm. Hg. The surfaces are first cleaned chemically, electrolytically or by grinding, sand blasting or heating in a vacuum. The metals may be contacted by (1) electrolytically depositing Cu or Nb, (2) passing two strips between rollers (Fig. 5, not shown) or (3) pushing a Cu cylinder over a Nb cylinder (Fig. 4, not shown). Further layers of metal may be joined to the Cu by hot rolling, electroplating or soldering, e.g. brass with a Pb-Sn alloy (see Fig. 6, not shown). The Nb may be heated by electron bombardment, high frequency heating, direct passage of current or radiation.
Patent GB-1266325-A (GB)
IPC: B67D1/00
Filed: 1968-07-24
Abstract: 1,266,325. Dispensing beverages. M. K. REFRIGERATION Ltd. July 24, 1969 [July 24, 1968], No. 35398/68. Heading A4T. In a method and apparatus for dispensing flavoured carbonated beverages, pressurized carbon dioxide at 11 is passed via reducing valve 12 to a container 16 of carbonated water or acting as a carbonator for water entry at 20, the carbonated water passing via solenoid valve 29 to a dispensing head 24, 25, the head also receiving a selected flavouring from a plastics disposable container 17 by gas-pressure at 11 via a second reducing valve 18 and solenoid valve 26, the proportion of water and flavouring being determined by metering devices in the head, e.g. adjustable orifices. The dispensing tap of the head may be manually or electrically operated, and the solenoid valves 26 for the flavouring may be controlled by a manual selector switch. Plain water may pass to the head via pipe 30 and valve 31.
Patent GB-1288672-A (GB)
IPC: A47B87/00
Filed: 1970-03-25
Abstract: 1288672 Shelving; joints KUBEL AG 25 March 1970 [8 July 1969] 14620/70 Headings A4B and A4H A free standing shelving structure comprises a shelf 5 with an edge clamped between caps 2, 3 fitted into adjacent ends of aligned hollow uprights 1, the caps 2, 3 being secured together by a bolt 4 disposed within the uprights 1, the bolt 4 being threaded into the lower cap 2, having a clearance fit in the upper cap 3 and being tightened by a tool passed into the upper end of the upper upright 1. As shown two shelves 5 have abutting ends with grooves together defining a bore for the bolt 4. Recesses 7 in the shelf receive the ends of the uprights. The shelf 5 may have reinforcing ribs on its underside which is closed by a separate plate 6. Side walls 8 having spring- loaded fins 10 which engage bores 12 in the shelves. The structure may include open shelves, cupboards (13, 14), Fig. 4 (not shown) and drawers (15, 16) in combination.
Patent GB-1289274-A (GB)
IPC: B27N3/08
Filed: 1970-05-11
Abstract: 1289274 Fibreboard MILLER HOFFT Inc 11 May 1970 [14 April 1970] 22704/70 Heading C3N A method of producing fibreboard comprises subjecting a mass of wood particles that have previously been dried to a moisture content of 5-25% by weight to steaming and mechanical reduction to form a mass of lignocellulosic material in fibrous form; mixing the said mass with a solution of the essentially unreacted ingredients of a thermosetting resin, the solution having a viscosity of less than 100 centipoises and a resin solids content of at least 45% by weight; compressing the resulting mixture to a desired thickness between separately heated platens; creating between said platens and throughout said mixture a high frequency electric field; and maintaining said field for a time sufficient to initiate and at least partially complete the reaction of said ingredients. In the examples the initial monomeric ingredients for forming the thermosetting resin are urea and formaldehyde or urea, melamine and formaldehyde. The frequency of the field is preferably 3 to 15 megacycles and the platens are suitably maintained at a temperature above 200 F. The mixture may-be formed into a mat which is precompressed before insertion between the platens. Two such mats may be superimposed and pressed together to form a thicker board. The platens may be heated to about 300 F., thus preventing the condensation on them of steam driven out of the board during the curing. Comparative examples describe the production of boards in which the wood particles have a moisture content of 30-60% by weight. Sizes, fungicides, insecticides, and drying oils may be included.
Patent GB-1289766-A (GB)
IPC: A24B15/16
Filed: 1970-06-25
Abstract: 1289766 Smoking composition GALLAHER Ltd 4 June 1971 [25 June 1970] 30938/70 Heading A2C The composition comprises a reconstituted tobacco or a tobacco substitute, incorporating basic magnesium carbonate, preferably the heavy variety in a proportion of 10-30% or more preferably 15-25% by weight of the total smoking material. Suitable tobacco substitutes include those with a cellulosic. oxidised cellulosic, or polyester base. Incorporation of the additive in reconstituted tobacco sheet is effected during its manufacture before casting. For example in the papermaking type of process of Specification 1,139,801, the basic magnesium carbonate is added to the slurry of cellulosic residue of the water extraction process before the web or sheet is cast and the sheet is subsequently coated with a concentrated aqueous solution of the spray dried powder produced from the original extraction process.
Patent GB-1290083-A (GB)
IPC: F01L1/18
Filed: 1970-07-20
Abstract: 1290083 I.C. engine rockers FORD MOTOR CO Ltd 20 July 1970 [27 Aug 1969] 35045/70 Heading F1B A hollow cast or stamped rocker 12 which is substantially U-shaped in cross-section has a semi-cylindrical internal bearing surface 28 on the bottom wall 20 which engages the annular housings 40 of needle bearing assemblies 42 on the stub shafts 38 projecting from the rocker fulcrum 34. Apertures 30 and 36 in the bottom wall 20 and fulcrum 34, respectively, are adapted to receive a bolt 32 which mounts the fulcrum on a boss 14 on the cylinder head. The ends of the stub shafts 38 may abut the rocker side walls 18 to locate the rocker laterally. The ends of the stub shafts (38<SP>1</SP>), Fig.5 (not shown), may be spaced from the side walls 18 by portions (56) of the needle bearing cages (54). The fulcrum (34<SP>1</SP>), Figs.4α and 4b (not shown), may have an integral depending tubular projection (44) of square or rectangular cross-section which is adapted to extend into a recess in the cylinder head boss 14 to prevent relative rotation. The rocker assembly may be actuated by an overhead camshaft. A metal bracket may laterally locate a plurality of rocker arms on the cylinder head.
Patent GB-1295586-A (GB)
IPC: B26B21/16
Filed: 1971-04-19
Abstract: 1295586 Razors PHILIP MORRIS Inc 19 April 1971 [20 April 1970 25 March 1971] 9917/71 Heading B4B  A safety razor comprises a handle assembly 312, Fig. 5, supporting a main skin pressure guard 314, a blade support 316 bearing a blade 120 and mounted for floating movement towards and away from the main guard 314 and biasing means 330 for urging the support 316 and blade 120 towards the guard 314, but permitting movement away from it when the force acting on the guard 314 owing to the shaving pressure exceeds a predetermined amount. The biasing means 330 may comprise a leaf spring 330 adjustable within a collar 331, or a coil spring 736, Fig. 9, acting between the guard plate 714 and a pivotably mounted blade support 716, a stop 738 optionally being provided to limit excessive pivoting; alternatively, Fig. 3 (not shown), the biasing spring (130) may act on the central region of a blade support (116) pivotably mounted adjacent the handle (112). Further, the biasing means may comprise elastic material (not shown), or magnets 530, Fig. 7, of opposite polarity, or magnets (630), Fig. 8 (not shown), of the same polarity may be employed.
Patent GB-1295610-A (GB)
IPC: H02G15/22
Filed: 1971-04-19
Abstract: 1295610 Cable terminations KABELUND METALLWERKE GUTEHOFFNUNGSHUTTE AG 19 April 1971 [13 Feb 1970] 21627/71 Heading H2E A termination for a single-phase power cable, of which the conductor wires 2 are stranded around a metal tube 1 carrying a cooling medium, comprises a brass supporting sleeve 5 inserted between the tube 1 and wires 2, a cable socket 6 which is disposed around and pressed on to the wires, and an outer body 9 of court polyurethane resin. The cable socket 6, which is of copper, is provided with a connecting lug 7. The outer body 9 may alternatively. be built up by winding tape around the cable socket.
Patent GB-1295917-A (GB)
IPC: A01J5/04
Filed: 1970-01-20
Abstract: 1295917 Claw piece for milking machine CHRISTENSEN & CO SA AS 20 Jan 1970 [23 Jan 1969] 2669/70 Heading AIM [Also in Division F2] A claw piece for a milking machine has a housing I with a sloping bottom 2. The inlet pipes from the teat cups 4 and an outlet pipe 5. A valve comprising a ball 9, a stem 8, and washer 11 acts at the mouth of the milk outlet. In one position of the valve shown the ball 9 seals the milk outlet, the valve being held in this position by. a weight 10 on the end of the stem. During the milking operation the housing is under vacuum and ball 9 is raised so that it does not seal the outlet pipe 5, but washer 11 seals the housing from atmosphere by acting against valve seat 6. If for any reason the vacuum in the housing is lost, e.g. by the teat cups being detached from the cow, the valve 9 falls downward under the action of gravity and seals the milk outlet pipe 5 thus preventing loss of vacuum in this pipe. A locking means is provided so that the valve may be held either in its upper position' in which inlet 5 is open or in its lower position wherein inlet 5 is closed, by a catch which can engage slots in a bar attached to the housing. The valve is locked in its upper position to permit the milking machine to be washed. The valve is locked in its lower position to ensure that the outlet pipe 5 remains sealed while the claw is transferred from one cow to another.
Patent GB-1296425-A (GB)
IPC: C07D207/404
Filed: 1970-08-19
Abstract: 1296425 Lubricant MOBIL OIL CORP 19 Aug 1970 [12 Sept 1969] 39925/70 Heading C5F [Also in Division C2]  A lubricating composition comprises a major proportion of a lubricating oil and a minor proportion of a compound of formula wherein R represents ethylene, propylene, C 3-6  cycloalkylene and C 2-200  alkyl substituted derivatives thereof, C 6-10  arylene optionally substituted by mercapto, halo, hydroxy, 6-30 carbon atoms containing alkyl, aryl, aralkyl and alkaryl groups; R<SP>1</SP> represents a C 1-10  hydrocarbylene group, optionally substituted by halo, hydrioxy, mercapto, 6-30 carbon atoms containing alkyl, aryl, aralkyl and alkaryl groups; n is a number from 0 to 10; q is a number from 0 to 50; and M represents oxygen or sulphur. The oil may be mineral or synthetic, e.g. polyalkylene oxides, silicones, polyarylethers, polyolefins such as hydrogenated decene trimer and esters such as diesters of dibasic acids, triesters of trimethylol propane and tetraesters of pentaerythritol.
Patent GB-1301457-A (GB)
IPC: C07C59/64
Filed: 1970-01-20
Abstract: 1301457 Preparation of methoxynaphthylpropionic acid SYNTEX CORP 20 Jan 1970 [30 Sept 1969] 31647/72 Divided out of 1300591 Heading C2C 2 - (6 - Methoxy - 2 - naphthyl) propionic acid is prepared by treating a 2-(5-halo-6-methoxy- 2-naphthyl) propionic acid (halo is Cl, Br or I) with a Ni-Al or Co-Al alloy in an aqueous solvent in the presence of an alkali metal hydroxide at at least 0‹ C. and acidifying the mixture. A dlmixture thus formed may be resolved, if desired. Pharmaceutical compositions comprising 2-(6- methoxy-2-naphthyl) propionic acid, when drepared as above, together with an excipient, are used in treating inflammation, pain and pyrexia.
Patent GB-1302857-A (GB)
IPC: B64C27/473
Filed: 1969-02-17
Abstract: 1302857 Laminates GLACIER METAL CO Ltd 17 Feb 1970 [17 Feb 1969] 8470/69 Heading B5N [Also in Divisions B7 and F1] A laminate comprises laminµ some or all of which have reinforcing fibres, the reinforcing fibres being orientated in different directions in different laminµ, the laminµ containing a settable resin, and at least one of the laminµ being folded over an edge of the laminate to give protection against exfoliation of the laminµ at the edge. The fibres may be carbon fibres and epoxy resin is specified as the settable resin. Laminates having an aerofoil section, e.g. a turbine or compressor blade, a helicopter rotor blade and a wing, are disclosed.
Patent GB-1304015-A (GB)
IPC: A63B49/10
Filed: 1969-04-30
Abstract: 1304015 Moulding carbon fibre/resin articles NATIONAL RESEARCH DEVELOPMENT CORP 27 April 1970 [30 April 1969(2) 11 Nov 1969] 22043/69 22083/69 and 55188/69 Heading B5A [Also in Divisions A6 E1 and F2] Articles reinforced by carbon fibres are made by inserting into an envelope a fibre/resin reinforcement having a cross-sectional area greater than that of the cavity within the envelope and at least partially curing the resin whilst the reinforcement is retained within the envelope. The envelope may or may not form part of the finished article. In the embodiment illustrated in Fig. 3, the two halves of a hollow rod are made by drawing a fibre/resin reinforcement into a cavity 13 formed between bolted mould halves 10, 11, using the reinforcement in situ, and finally removing the mould halves. In the embodiment of Fig 14, a rod is made by supporting a tubular polythene envelope 30 into which epoxy resin has been injected within a tubular metal mould 31 and drawing into envelope using core 26 a helically wound steel spring wire 27 and a number of tows 28 of epoxy wetted carbon fibres. The resin is cured and the envelope, fibre/resin reinforcement and the core are removed from the mould. In a third embodiment a racket head and handle are made by drawing fibre/epoxy resin reinforcement into a deformable thermoplastic envelope and then shaping and curing the composite thus formed using steel dies. The handle preferably includes a central core of wood.  In the embodiment shown in Fig. 5 a fibre/ resin rod 15 made by compression moulding two halves and joining them together is filled with a formed polyurethane or wood core.
Patent GB-1304310-A (GB)
IPC: A63H30/00
Filed: 1971-11-24
Abstract: 1304310 Flexible shafts D B POYNTER 24 Nov 1971 54478/71 Heading F2U [Also in Divisions A6 and H2] A combined flexible shaft and Bowden cable, used to connect a hand-held electric motor and steering control unit to a toy vehicle, (see Divisions A5-A6), comprises an outer plastics sheath 22, an inner, axially movable control wire 20, and a shaft 21 between them in the form of a helix, rotating about the control wire. The shaft 21 consists of a metal spring, threaded over the control wire 20 and stretched beyond its elastic limit to the shape shown.
Patent GB-1314090-A (GB)
Title: Siliceous dental cements
IPC: A61K6/06
Filed: 1970-06-23
Abstract: 1314090 Glass composition NATIONAL RESEARCH DEVELOPMENT CORP 22 June 1971 [23 June 1970] 30541/70 Addition to 1270795 Heading C1M [Also in Division C3] A glass composition comprises 35-50% by weight SiO 2 ; 6-30% by weight Al 2 O 3 ; 7-18% by weight alkaline earth metal fluoride; 5-18% by weight alkali metal hexafluoroaluminate; 0-10% by weight AlPO 4 ; and 0À5-20% by weight of a Group III metal selected from indium, gallium, scandium and yttrium (expressed as the oxide, M 2 O 3 ). The preferred Group III metal is indium and numerous examples of glass compositions are disclosed. The glass is produced by mixing the Group III metal or compound thereof with the molten aluminosilicate or with the precursor components used to form it.