baber/WOPTO huggingface dataset:
Patent GB-1129229-A (GB)
Title: Vinyl monomers
Inventor: RHUM DAVID
IPC: C07C69/01
Filed: 1967-11-01
Abstract: 1,129,229. Divinyl carbonates. AIR REDUCTION CO. Inc. 1 Nov., 1967 [1 Nov., 1966], No. 49718/67. Heading C2C. The invention comprises divinyl carbonates of general formula wherein R 1 , R 2  and R 3 , which may be the same or different, are hydrogen, alkyl containing up to 20 carbon atoms or aryl, specifically divinyl carbonate and diisopropenyl carbonate, and which are prepared by the reaction of a mercury (II) aldehyde or ketone or a chloromercury (11) aldehyde or ketone with phosgene, in the presence of a tertiary amine as catalyst and in an inert solvent or diluent. Aliphatic ethers or aliphatic or aromatic hydrocarbons are the preferred solvents and aliphatic, aromatic or heterocyclic amines may be the catalysts.
Patent GB-1453186-A (GB)
Title: Textile yarn or tape winding machines
IPC: B65H23/195
Filed: 1972-10-27
Abstract: 1453186 Winding machine; tension control JAMES MACKIE & SONS Ltd 23 Oct 1973 [27 Oct 1972] 49774/72 Headings DID and D1J Strand tension changes are corrected by a tension feeler which moves one drive coupling part relative to a second drive coupling part to adjust the torque transmitted to a strand-winding spindle, the two parts comprising two permanent magnets or a permanent magnet and a cooperating member. A magnetic coupling for shaft 22 driving spindle 8 winding tape 2 comprises belt-driven drum 16 and four permanent magnets 32 slidable on and rotatable with shaft 22. Cranked arm 56 and attached plate 62 pivoting with tension changes in tape 2 actuate pneumatic pistoncylinder unit 70 via valves 64, 66 to slide the magnets via pivoted lever 90 in and out of the drum to vary the torque transmitted. The movement of the magnets is damped by damper 88. Upon tape breakage, or at the end of winding, arm 56 and plate 62 pivot to actuate valve 68 causing piston-cylinder unit 72 to apply brake 74 to shaft 22. Spring 76 biases rod 56 to tension the yarn. Shaft 22 also drives yarn traverse 10. One or more magnets may be mounted on shaft 22. The motor driving the coupling may drive a member, e.g. four spindle drives. A winding machine may include a plurality of such motors. Spindle 8 is mounted on arms 54 to pivot away from traverse 10, about shaft 22, as the package diameter grows.
Patent GB-1093727-A (GB)
Title: A dynamo-electric machine with directly cooled conductors
IPC: H02K3/24
Filed: 1965-11-24
Abstract: 1,093,727. Cooling dynamo-electric machines. LICENTIA PATENT - VERWALTUNGS G.m.b.H. Nov. 24, 1965 [Nov. 24, 1964], No. 49893/65. Heading H2A. In a dynamo-electric machine direct conductor cooling passages 4, e.g. for water, are formed by resilient sealing spacers arranged between each two adjacent conductors 1 of the machine. The cooling passages may be joined, especially at their ends, by holes 7 through the conductors. The seal is made by placing the spacers (3) which have a resiliency like that of rubber (Fig. 1, not shown), between the conductors and then pressing the conductors together (Fig. 2, not shown). The spacers and conductors may be specially shaped as shown and a plurality of spacers may be provided between two adjacent conductors so as to increase the number of cooling passages. Also the conductors may be formed with grooves (6, Fig. 5, not shown), into which endless strips of spacer material are arranged between adjacent conductors. This construction may be used in a salient pole rotor of the type described in Specification 963,707. The spacers may be used in the end-windings (Fig. 6, not shown), of the machine.
Patent GB-1279232-A (GB)
Title: Composite container for bulk liquids or powders
Inventor: CLARE STANLEY
IPC: B65D77/04
Filed: 1968-03-26
Abstract: 1279232 Composite containers; load handling TANKS & DRUMS Ltd 26 June 1969 [26 March 1968 22 Oct 1968] 14411/68 and 50053/68 Headings B8H and B8P A composite container for bulk liquids or powders comprises one-piece seamless inner plastics containers 37 preformed by a blowmoulding or casting process to the shape of a rectangular prism and a protective outer container 30 formed from multi-ply corrugated cardboard, plywood, or hardboard. The inner container may incline towards a draw-off valve 43, and may be separated from the outer container 30 by shock-absorbing plastics material such as polyurethane 38. Closable filling and cleaning openings are provided in the inner container. The edges of the inner container may be chamfered (Fig. 1) to fit against corresponding battens (7, 9, Fig. 2) to allow container stacking. Pallet battens 32 may be provided and may have deck boards 33 secured to the underneath thereof.
Patent GB-1484284-A (GB)
Title: Infra-red filters
IPC: G02B5/28
Filed: 1975-11-11
Abstract: 1484284 Interference IR filters STANDARD TELEPHONES & CABLES Ltd 11 Nov 1975 [19 Nov 1974] 50100/74 Heading G2J An infrared interference filter is made by securing a slice of refractive material to a substrate and working the slice to the required thickness, securing a second slice of refractive material to the first slice and working the second slice &c., &c., until the required multi-layer interference filter has been produced. The slices may be secured together by optical contact or by very thin layers of wax or resin, e.g. polyethylene, polypropylene paraffin wax; epoxy, acryllic or alkylic resin; K Br. There may be incorporated evaporated layers, particularly an outer protective layer, (not shown). The protective layer may alternatively be of plastics resin, and in any case is either too thick to affect the properties of the filter, or is thin and forms an active part of the filter.
Patent GB-1001230-A (GB)
Title: Device for false-twisting textile yarns
IPC: D02G1/06
Filed: 1963-12-19
Abstract: 1,001,230. Twist-tubes. ELITEX SDRUZENI PODNIKU TEXTILNIHO STROJIRENSTVI. Dec. 19, 1963 [Dec. 21, 1962], No. 50116/63. Heading D1D. A false-twisting device (for use in crimping yarn) comprises two floating, rotating spindles held on two pairs of (driving) discs by two magnets which effectively occupy the space between the discs and the longitudinal axes of which are parallel or coincident with the connecting line between the axes of rotation of the discs. As shown, hollow spindles 8 and 9 are rotated by frictional engagement with the rims of pairs of driving and contact discs 6 and 7 and held in position by adjustably mounted magnets 10 and 11. Arcuate portions 20, 21, of noses 18 and 19 of pole pieces 16 and 17 accommodate spindle collars 24 and 25. Each magnet may have a circular opening 30 or an oblong slot 31 fitting over the disc hub.
Patent GB-1144930-A (GB)
Title: Metalizing compositions
Inventor: HOFFMAN LEWIS CHARLES
IPC: H01G4/008
Filed: 1966-11-09
Abstract: 1,144,930. Glass-metal compositions. E. I. DU PONT DE NEMOURS & CO. 9 Nov., 1966 [9 Nov., 1965], No. 50227/66. Heading C1M. [Also in Division C7] A noble metal alloy metallizing composition comprises a powder alloy of Pd-Au, Pt-Au, Ag-Au, Ag-Pt or Pd-Pt having an average particle size not greater than 40 microns and with not more than 5% of particles greater than 42 microns, the alloy containing 5-95% by weight of each of the metals and the alloy being dispersed in an inert vehicle which forms 10- 70% by weight of the composition. The composition may also contain 2À5-95% by weight of a vitreous binder such as borates or borosilicates of Pb, Cd, Ba and Ca and optionally oxides of Zn, Mg, Bi and Pb. The preferred inert vehicle is an 8% solution of ethylcellulose in beta-terpineol or a 10% solution of ethylcellulose in butyl cellosolve acetate. Thickeners such as methacrylate or butylmethacrylate resins and ethylcellulose may also be added. The composition is used for metallizing dielectrics such as forsterite, steatite, titania, alumina, zircon porcelain, and barium and strontium titanates which may be in the " green " state or the fired state. The composition is applied to the dielectric by screen stencilling and then sintered to form capacitors, resistors and conductors.
Patent GB-1248742-A (GB)
Title: Position encoder
Inventor: MUSSO MARCEL
IPC: H03M1/14
Filed: 1968-10-24
Abstract: 1,248,742. Position encoders. PRECILEC. 24 Oct., 1968 [24 Oct., 1967; 6 Sept., 1968], No. 50481/68. Heading G4H. A transducer measuring the relative position of two members to give an amplitude-significant signal and an analogue-digital converter digitizing the amplitude signal are fed with the same source as the reference signal. In the embodiment of Fig. 1 signals u 1  = E sin # . sin wt, u 2  = F cos # . sin wt, u 3  = - E sin # . sin wt and u 4  = - E cos # . sin wt representing the angular displacement # of the primary winding of resolver 10 are first compared with zero to determine which two signals are positive. The associated two comparators are then enabled to compare their two inputs with a stepped reference signal derived from voltage divider 6, each step being counted in an auxiliary counter 7 until one of the two comparators is operated. The logic circuit 5 then sets a counter 9 to a level dependent on which two comparators were initially enabled and which comparator operated first and counter 7 is counted down to 0, counter 9 being simultaneously incremented or decremented from its set level under the control of the logic circuit. The count is stored in a register 14 and may be displayed. The voltage divider (Fig. 3, not shown) comprises a parallel resistor chain the resistances being switched under the control of transistor switches operated by the outputs of counter 7. In the embodiment of Fig. 7 the signal from a potentiometer 18 representing the angular or linear position of its slider 17 are compared with four stepped reference voltages representing four possible ranges of the input. Initially the reference voltages have the values 0, v/4, v/2, 3v/4 to determine the range in which the input lies. The reference voltages are then stepped and as in the embodiment of Fig. 1 pulses simultaneously counted in auxiliary counter 7. The counter 9 is preset by the logic circuitry 5 in dependance on the range in which the input is found to be. The apparatus of Fig. 1 may be modified to include coarse and fine transducers, the coarse transducer giving twice the required resolution, i.e. an auxiliary digit 0 or 1 and the fine transducer dividing one coarse digit into a hundred increments. A logic circuit adds one to the coarse value if the auxiliary digit is " 1 " and the fine value is between 0 and 25 and subtracts 1 if the auxiliary coarse value is " 0 " and the fine value is between 75 and 99. Alternatively a three-stage system, i.e. coarse, fine and medium may be used.
Patent GB-1363679-A (GB)
Title: Non-woven webs of filaments of synthetic high molecular weight polymers and process for the manufacture thereof
IPC: D04H3/16
Filed: 1971-11-02
Abstract: 1363679 Non-woven fabrics; forming webs; crimping fibres LUTRAVIL SPINNVLIES GmbH & CO 2 Nov 1971 [3 Nov 1970] 50807/71 Headings D1F D1N and D1R A non-woven fabric comprises helically crimped filaments of synthetic polymer, the diameter of the helices being 1 to 10 mm and the direction of the turn alternating every 1 to 50 turns, preferably every 5 to 15 turns. The polymer may be polyethylene, chlorinated polyethylene, a copolymer of ethylene with propylene, 1-butene, vinyl chloride, vinyl acetate, tbutyl acrylate or t-butyl acrylate/acrylic acid, polypropylene, nylon 6, 6.6 or 6, 10, polyethylene terephthalate, polymerised #-hydroxydecanoic acid or 4-(#-hydroxyethoxy) benzoic acid or plasticised polyvinyl chloride (optionally containing vinyl acetate as comonomer). In a preferred embodiment the polymer is extruded through multiple spinnerets and the filaments cooled by air provided by blowing or suction. The cool air may be directed parallel to the filaments by a tube (11, Fig. 2d, not shown) situated in the centre of the spinneret, or between spinnerets. Alternatively the air stream may make an angle of 90‹ with the filaments, as shown, or an intermediate angle set by adjustable baffles (13, Fig. 2a, not shown). In these cases the bulk of the cooling air is deflected parallel to the filaments and effects a primary take up action. Air escapes through perforated tube 15 or is drawn through it by a suction chamber if the cooling air is sub-atmospheric, adjustable flaps 16 then being used to keep air out. The main take-up is provided by a one or two stage pneumatic unit 20, the distance between the stages being adjustable. The pneumatic jets (26, Fig. 3, not shown) make an angle of 5‹ to 30‹ with the filaments and supply cold or hot air or steam. Connecting piece 41 leads to crimping chamber 40, the length of which can be adjusted by screw thread (42, Fig. 3). The shape of chamber 40 leads to vortices which helically crimp the filaments. The filaments travel along flexible tubes 50, whose ends 51 simultaneously undergo a circular motion through their attachment to beam 52 and a lower frequency reciprocation in a direction transverse to that of conveyor 60. The filaments are thus laid in overlapping trochoidal paths. Suction may be applied at 61. The web may be bonded by needling and/or heat treatment or the application of an aqueous dispersion of a curable acrylate resin or of a powdered adhesive. In one embodiment a backing in the form of waffle foam was provided, in another the product was needle-punched to a layer of carpet material.
Patent GB-1159829-A (GB)
Title: Electrical Resistance Furnaces
Inventor: PLUME ALAN WALTER
IPC: F27B14/04
Filed: 1966-11-14
Abstract: 1,159,829. Crucible furnaces. HEATLOCK Ltd. 8 Nov., 1967 [14 Nov., 1966], No. 50977/66. Heading F4B. [Also in Division H5] In an electrical resistance furnace of the type having resistance elements 15 heating a crucible 2 mounted in a sealed enclosure 5, 10, 12 which can be pressurized to extract molten metal, the enclosure is pressurized through a closable charging tube 26 which extends through a side wall to a point over the crucible. The tube 26, which is of cast iron, is closed by a member 28 carried on a screw threaded clamp 29. The enclosure is pressurized through an aperture 31 in member 28 and metal is discharged through a tube 13. The tube 26 may be completely removed to allow either the crucible or resistance heating elements to be removed for repair. A metal liner 32 protects the refractory casing 5 during this step. During charging, member 28 is moved with clamp 29 to allow a funnel (not shown) to be rested on bracket 30 to facilitate pouring of molten metal through tube 26. A nickel-chrome steel shield 1 is interpersed between the resistance elements 15 and silicon carbide crucible 2. In the floor of the furnace is an aperture closed by a zinc foil 16. Should the crucible break molten metal will rupture the foil and escapes. A thermocouple 19 is provided.
Patent GB-1487216-A (GB)
Title: Digital signal processor
IPC: H04J1/05
Filed: 1974-11-26
Abstract: 1487216 Multiplex communication systems TELECOMMUNICATIONS RADIOELECTRIQUES ET TELEPHONIQUES 26 Nov 1974 [29 Nov 1973] 51131/74 Heading H4M In arrangements for either converting a single side band frequency division multiplex signal into the corresponding base band channel signals or vice versa and in which the channel signals are separated or combined by digital techniques making use of digital filters and Fourier transform circuits, the digital filters are of recursive type. To convert a single side band frequency division multiplex signal applied at 1 into base band channel signals, binary coded samples of the multiplex signal are derived by A/D converter 5 (following frequency transposition at 2 and filtering at 4) and applied to a series parallel converter 6 which distributes the samples to signal paths S 0 -S 7  such that samples occur in each path at a frequency which is the same as the bandwidth of a channel signal. Each path incorporates a delay r 0 -r 7  to eliminate the mutual shifts between samples within a given cycle. The outputs of the delays are applied to recursive digital filters A 0 -A 7 , to which are also applied signals representing filter coefficients from a source 7, and the filter outputs pass to the inputs # 0 -# 7  of a Fourier transform circuit 8. This additionally receives signals representing complex coefficients corresponding with channel carrier signals from a source 9 and provides a set of output signals C 1 , C 2 , C 3 , corresponding to the required channel signals which are fed to demodulators d 1 , d 2 , d 3 . The filter coefficients characterize an amplitude frequency characteristic of a low pass filter which has a cut off frequency corresponding to the half band width of a channel signal and a phase frequency characteristic representing the difference between the phase frequency characteristic of the filter and that of the reference filter Ac associated with the reference delay ro. The phase frequency characteristic of the recursive digital filter is sawtooth shaped such that in combination with the linear characteristic of its associated delay, a stepped characteristic is established. The recursive filters, e.g. A 1 , each have a recursive section 12 which is the same for all filters A 0 -A 7 , all receiving the same coefficient signals and a non recursive section 10 which in each filter receives the same number of coefficient signals as does the recursive section. In a multiplexer (Fig. 10, not shown) similar but complementary techniques are used.
Patent GB-1262776-A (GB)
Title: Metal-tube extrusion press
Inventor: GROOS HORST HANS
IPC: B21C23/21
Filed: 1969-10-20
Abstract: 1,262,776. Billet piercing ; extruding. SCHLOEMANN A.G. 20 Oct., 1969, No. 51334/69. Headings B3H and B3P. A metal tube extrusion press has a piercing mandrel 18 mounted on a cross-bar 7-9 in the movable crossbeam 3 of the press and drivable by a piston 6 and cylinder 5 in the main extrusion piston 2 to effect the piercing of a billet and position the mandrel in the extrusion die where it is locked for extrusion over a stationary mandrel or allowed to float within the die. The locking is effected by lateral jibs 38 extending from the cross-bar through openings in the side of the crossbeam 3. The jibs are slidable on rods 40 secured to the main extrusion cylinder 1, and have splined rotatable abutment sleeves 42 which can be positioned to abut or pass over grooved, fixed, abutment collars 41 on the rods. When the sleeves and collars abut, the extrusion is effected over a fixed mandrel, whereas when the sleeves can pass over the collars, the extrusion is effected over a floating mandrel.
Patent GB-1063554-A (GB)
Title: Method of measuring the fine grain proportion of granular materials
Inventor: HAAS HANS
IPC: G01N15/04
Filed: 1965-12-03
Abstract: 1, 063, 554. Determining the fine-grain proportion of granular materials. STRABAG BAU-A.G. Dec. 3, 1965, No. 51373/65. Heading G1S. In a method for ascertaining measured values for the determination of the fine-grain proportion of granular construction materials, a sample is weighed in a graduated tube 12 which is floated in a container 13, and subsequently placed in suspension in a further tube and sedimented, a suspension of a specific volume being drawn off after a predetermined time interval. The weight of the suspension is determined by filling the suspension into a hydrometer and comparing the weight of the suspension immersed in water with that of the same volume of water contained in the hydrometer.
Patent GB-1164819-A (GB)
Title: Improvements in or relating to Ring Seals
Inventor: ROSE DAVID ALLEN
IPC: B61F15/22
Filed: 1966-11-17
Abstract: 1,164,819. Bearings; seals. D. A. ROSE. 17 Nov., 1966 [29 Nov., 1965], No. 51458/66. Headings F2A and F2B. In a railway vehicle axle box a seal comprises a body portion 18, from one side of which extend annular fins 26 and from the other side extend annular projections 28, 30, and a lip 22 at the inner edge of the seal having a recess 46. When the seal is positioned between walls 38, 40, Fig. 4, fins are flexed and their chamfered surfaces 42 abut wall 40, while the flat and curved surfaces of projections 30, 28 abut wall 38 and form a vacuum seal. Insertion of the axle causes lip 22 to flex so that flat surface 48 is perpendicular to the axle axis, and the lip is spaced from wall 38. Recess 46 for containing lubricant is formed in tapered end portion 56 of the lip. The seal is of neoprene impregnated with molybdenum disulphide.
Patent GB-1055068-A (GB)
Title: A process of producing polyoxymethylenes
IPC: C07C45/55
Filed: 1964-12-18
Abstract: High molecular weight polyoxymethylene is produced by washing low molecular weight polyoxymethylene with at least one of the following organic solvents in liquid anhydrous form: (a) alcohols, diols, polyols; (b) ethers; (c) carboxylic acid anhydrides; (d) ketones, and (e) polar solvents, decomposing the washed polyoxymethylene to generate formaldehyde and polymerizing the formaldehyde in the presence of a catalyst.  Polar solvents listed are N,N1 - dimethylformamide, N,N1 - dimethylacetamide, N - methylpyrrolidone, pyrrolidone, dimethylsulphoxide, diethylsulphoxide and tetramethylenesulphone. Long lists of catalysts are given-the example use pyridine, tetramethylurea, tri - n - butylamine, phenylisonitrile and cyclohexylisonitrile.  The product may be acylated, e.g. with acetic anhydride.
Patent GB-1365149-A (GB)
Title: Device for the automatic operation of a current supply  system
IPC: H02J7/34
Filed: 1971-11-09
Abstract: 1365149 Standby apparatus LICENTIA PATENT VERWALTUNGS GmbH 9 Nov 1971 [12 Nov 1970] 51938/71 Heading H2H A supply system particularly for a satellite comprises two sources of voltage each of which is associated with a control device, the operating signal for one of which devices is derived from the other device. Load devices 8, 9 of a satellite are supplied either from a solar generator 1 or from the generator and a battery 2 which may be charged, under certain conditions from the solar generator by closing a switch 10, the charging current being controlled by a device 3. The voltage applied to the loads is maintained constant by means of a shunt regulating device 6, 7 which may be of any suitable type, means being provided in the regulating device to produce a signal which is dependent upon the current flowing in the regulating device 6, 7. This signal is fed as the control signal to a unit 4 which controls the rate of discharge of the battery 2 when the battery is assisting the solar generator 1 in supplying the loads 8, 9. Thus the output of the battery is controlled according to the power output of the solar generator. The means for producing the signal used for controlling the unit 4 comprises, inter alia, a pair of transistors and a Zener diode for setting a reference value.
Patent GB-1439949-A (GB)
Title: Cleaning corona generating apparatus
IPC: G03G15/02
Filed: 1973-11-09
Abstract: 1439949 Corona charging apparatus XEROX CORP 9 Nov 1973 [16 Nov 1972] 52120/73 Heading H1X Corona generating apparatus comprises a grid 68 disposed in the open side of a shield member 66 enclosing a corona discharge electrode 74, 76 and cleaning means 78 in contact with the grid and discharge electrodes for removing particles therefrom. The grid wires 68 are preferably parts of a single wire attached to fasteners 69 and looped around posts 71 on insulating plates (70) one shown) closing the ends of the shield 66. The grid wires 68 cover only three-quarters of the width of the opening in the shield so that one wire 76 of the discharge electrode is not covered by grid wires and permits rapid and roughly controlled charging, the other wire 74 permitting slow and well-controlled charging. The cleaning means 78 comprises a wiper 80 including a grid wiper 90 and discharge electrode wiper 85 of slightly abrasive material secured by adhesive in a nylon support 86 attached by a bar 84 to an operating handle 88. The apparatus is mounted in an electrophotographic printing machine (Fig. 1, not shown).