baber/WOPTO huggingface dataset:
Patent GB-882121-A (GB)
Title: Electromagnetic wave transmission devices
IPC: H01P9/00
Filed: 1958-11-27
Abstract: 882,121. Amplitude modulation systems. WESTERN ELECTRIC CO. Inc. Nov. 27, 1958 [Dec. 9, 1957], No. 38258/58. Class 40(5). [Also in Group XL(b)] An electromagnetic-wave-transmission device includes an insulating member comprising uniformly distributed ferroelectric and ferromagnetic material, means for varying the electric polarization of the member and means for varying the magnetic polarization of the member, the arrangement being such that one or more propagation constants of the device can be varied at will. The device shown comprises a section of coaxial cable having an outer conductor 6 of non-magnetic material such as copper and a central conductor 8, separated by an insulating member 12 composed of alternate segments 16 of ferroelectric material such as barium titanate and segments 18 of ferromagnetic material such as nickel ferrite, the thickness of the segments being small compared with the wavelength of the transmitted signal. A signal source 14 and a utilization apparatus 29 are connected to opposite ends of the coaxial cable through blocking condensers 15 and 17 respectively. An adjustable voltage source 22 in series with a radio-frequency choke 24 applies an adjustable biasing electric field to the ferroelectric segments 16 to vary the dielectric constant thereof. An adjustable current source 28 connected to a winding 26 applies an adjustable biasing magnetic field to the ferromagnetic segments 18 to vary the magnetic permeability thereof. Suitable adjustment of the voltage and current sources thus enables any desired phase constant to be obtained without variation of either the characteristic impedance or the attenuation constant, so the device will serve as a variable delay line. Conversely, variation of the characteristic impedance and attenuation enables signals from the source 14 to be modulated without change of phase. In an alternative construction (Fig. 2, not shown), the insulating member 12 consists of homogeneously mixed small particles of ferroelectric material and ferromagnetic material, and the variable current source 28 is connected in parallel with the variable voltage source 22, the winding 26 being omitted. In this case the source 28 drives a variable biasing current through the ferromagnetic material to vary the magnetic permeability thereof. In a further alternative construction (Fig. 3, not shown), a hollow insulating cylinder constructed of both ferroelectric and ferromagnetic particles surrounds a central tubular conductor and is in turn surrounded by a winding which forms the outer conductor of a coaxial transmission line. The variable voltage and current sources are connected to an actuating mechanism which enables the current and voltage to be adjusted in either direct or inverse proportion.
Patent GB-835575-A (GB)
Title: An improved multiplexing and filtering device for the u.h.f. band
IPC: H01P1/161
Filed: 1956-12-14
Abstract: 835,575. Waveguide circuits. STANDARD TELEPHONES & CABLES Ltd. Dec. 14, 1956 [Dec. 21, 1955], No. 38287/56. Addition to 769,668. Class 40 (8). [Also in Group XL (c)] In a U.H.F. multiplex transmit-receive arrangement isolation of the different frequency bands in the transmitted and received waves is achieved by means of the multiplexers described in the parent Specification whilst separation of the transmitted and received waves, which are orthogonally polarized, is achieved by means of a mode filter. A horn radiator 10, Fig. 1, used for both transmission and reception, is connected to a symmetrical waveguide 8 in which a number of parallel conductive vanes 11, forming a mode filter, are arranged. These allow the passage of the received, horizontally polarized wave to a multiplexer 13 whilst forming a short-circuit for the transmitted, vertically polarized wave. The transmitted wave is coupled from a rectangular waveguide 7 into the waveguide 8 by means of a vertical probe 9. A transmission multiplexer 3 is coupled to the waveguide 7. Both multiplexers consist of two or more cavities each tuned to a different frequency, each connected on the one hand to a separate transmitter or receiver and coupled on the other hand by apertures to a common transmitting or receiving wide-band waveguide. The latter may be a ridged waveguide and may be connected to the waveguide 8 by means of probe couplings and a coaxial line (Fig. 4, not shown). In the modification of Fig. 5, the waveguides 7 and 8 are provided with double ridges in the form of horizontal, conductive laminae 23, 24 which are spaced apart by a small gap in the region of the coupling aperture 22 and recede from each other on either side of the aperture. The ridges also act as a mode filter.
Patent GB-1363794-A (GB)
Title: Compact dialyzer
IPC: B01D/
Filed: 1972-08-17
Abstract: 1363794 Dialyser UNITED STATES ATOMIC ENERGY COMMISSION 17 Aug 1972 [14 Sept 1971] 38361/72 Heading B1X A dialyser comprises a plurality of tubes 30 (which tubes may be formed as such or by combining a pleated sheet of material with another, base sheet) the tubes being of semipermeable membrane material and arranged in layers each consisting of a single row of parallel tubes, the axes of tubes in alternate layers being parallel and the axes of tubes in adjacent layers being at an angle to one another, means 31, 32, 33 for passing one of two fluids through the tubes, means 41, 42, 43 for passing the other of the fluids over the tubes, and means 11, 12, 13, 14 for sealing the passages for one fluid from the passages for the other fluid at the tube extremities. In the embodiment shown, each of the tubes in each layer of tubes has one of its ends sealed into tube sheet 11 or 12, tube sheets 11 and 12 being sealed to each other at B and to housing 10 at their other edges. Similarly, the other end of each tube is sealed into one of tube sheets 13 or 14, tube sheets 13 and 14 being sealed together at D and to the housing at their respective other edges. The first fluid entering at 31 passes through the tubes to outlet manifold 33. The second fluid enters at 41 and passes over the tubes in the space bounded by 11, 12, 13, 14 to outlet manifold 43. In another embodiment (Fig. 9, not shown), the inlet and outlet manifolds 42, 43 for the second fluid lie within the tube sheet assembly. There is reference to use of the apparatus for blood oxygenation or dialysis or for the purification of water.
Patent GB-907150-A (GB)
Title: Improvements in display devices
Inventor: REEVES RODNEY CARLTON
IPC: G09F11/29
Filed: 1959-11-12
Abstract: 907,150. Display devices. REEVES ENGINEERING PRODUCTS Ltd. Nov. 11, 1960 [Nov. 12, 1959], No. 38462/59. Class 3 (1). A display device comprises a resilient plastics &c. web coiled on horizontal rollers 2, 3 and passing over guide rollers 11 and through guides 9, 10. The rollers 2, 3 are rotated, through a chain-drive 7, by a reversible motor 8, means being provided to free the roller acting as a feed roller, so that the part of the web on the feed roller may uncoil until it bears against guides 12. The web may be perforated at its central portion to assist application of display sheets.
Patent GB-1266768-A (GB)
IPC: B65D83/14
Filed: 1969-08-01
Abstract: 1,266,768. Pressurized dispensing containers. L'OREAL. Aug. 1, 1969 [Aug. 1, 1968; Dec. 5, 1968], No.38804/69. Heading F1R. A pack for mixing and dispensing under pressure at least two fluids comprises an external envelope closed by a discharge valve and a container located within the envelope, means being provided for creating an excess pressure within the container when the container is to be used so that the contents of the container are discharged into the envelope, and means being provided for pressurizing the mixed contents of the envelope. The container may comprise a tubular member with a weakened zone which is ruptured when pressure fluid is injected from an external container either through the discharge valve or a separate valve. The container may act as a dip tube and the contents may be discharged through the external container, Figs. 1-4 (not shown). The container may comprise a collapsible tube, Figs.5-8 (not shown), with a folded seam and the pressurizing container is then within the envelope, means being provided to connect the tube to the pressurizing container. In a further embodiment both the envelope and container are initially pressurized. When pressure is released from the envelope, the pressure in the container ruptures it, Fig. 9 (not shown). Indicators may be provided to show when the pack is ready for use, Figs.10, 11 (not shown). The container may comprise a hollow piston slidable in the envelope and having an internal piston slidable therein, means being provided to apply pressure to the piston to cause it to discharge the contents into the envelope and thereafter discharge the mixed contents of the envelope. A plurality of such containers with pistons may be provided, Figs.12-15 (not shown).
Patent GB-1492489-A (GB)
Title: Low friability rigid polyurethane foam
IPC: C08G18/50
Filed: 1975-09-22
Abstract: 1492489 Rigid polyurethane foam OLIN CORP 22 Sept 1975 [23 Sept 1974] 38827/75 Heading C3R A rigid polyurethane foam is prepared by a process which comprises reacting a polyether polyol reactant with an organic polyisocyanate in the presence of a catalyst and a foaming agent, wherein the polyether polyol reactant comprises a first polyether polyol which has an OH number of from 150-800 and has been produced by condensing 4,4,4-trichloro-1,2- epoxybutane with a mixture of dextrose and water and/or an aliphatic diol or triol, and wherein the polyether polyol reactant further includes a second polyether polyol, which has an OH number of from 200-500 and which is an adduct of ethylene oxide and an aliphatic diol, an aliphatic triol or a mixture thereof, the second polyol being present in such a proportion as to result in the formation of a foam of reduced friability, the proportion generally being 5-35 pbw per 100 pbw of the first polyether polyol. The dextrose includes hydrous dextrose, e.g. α-d-glucose monohydrate, and anhydrous dextrose, e.g. d-glucose. Suitable aliphatic diols and triols for use in preparing the polyols are ethylene glycol, propylene glycol, butylene glycol, glycerol, trimethylolpropane and triethylolpropane. The preferred polyisocyanates are toluene diisocyanate and/or polymethylene polyphenylisocyanate. The foaming agent may be water and/or a halocarbon, and the catalyst may be a tertiary amine or an organic metal salt. The reaction mixture may also include a surfactant, e.g. silicone oils and soaps. The foam may be prepared by a one-shot or prepolymer process. In the examples foams are prepared from the following formulation: a polyether polyol (OH number 360) prepared by condensing in the presence of a boron trifluoride etherate catalyst, 4,4,4-trichloro-1,2- epoxy-butane with an equimolar mixture of ethylene glycol and α-d-glucose monohydrate; polymethylene polyphenylisocyanate, trifluorochloromethane; dimethylcyclohexylamine catalyst; a silicone-glycol surfactant; and an ethoxylated glycerin of OH number 229, 400 or 499.
Patent GB-1524543-A (GB)
Title: Background removal apparatus
IPC: G03G15/095
Filed: 1975-09-24
Abstract: 1524543 Developing apparatus; removing background toner XEROX CORP 24 Sept 1975 [25 Sept 1974 (2)] 39109/75 Heading B2L A magnetic brush developing apparatus 16 is supplemented by an apparatus 15 for removing background toner particles 51 from the non-image areas of a developed image on a recording surface 12, the apparatus 15 comprising a rotating magnetic cleaning brush 36 formed of magnetic carrier beads 44 substantially devoid of toner particles which beads 44 attract the background toner particles away from the surface 12 in greater proportion than the image particles. Before reuse of the carrier beads 44, the toner particles 51 adhered thereto are removed by an electrically charged roller 50 and returned to the developing apparatus 16.
Patent GB-1193354-A (GB)
Title: Parallel Wire Strand, and method and apparatus for manufacture thereof
IPC: D07B5/00
Filed: 1967-08-25
Abstract: 1,193,354. Making parallel wire strand. BETHLEHEM STEEL CORP. 25 Aug., 1967 [25 Aug., 1966], No. 39163/67. Heading D1T. To make a parallel-wire strand, Fig. 3, such that the strand has the minimum tendancy to twist or coil, a number of the wires 19 are drawn from turntables 11 that rotate clockwise and a substantially equal number of wires 21 are drawn from turntables 13 that rotate anticlockwise, the wires being assembled in parallel relationship and secured against movement by individual binding means 128 at at least two longitudinally spaced points. In this manner the wires are divided into groups, each group having a natural tendancy to curve in a direction opposite to another group. In Fig. 3 the groups of wires are drawn through a series of lay plates 27, 29, 31, 32 arranging the wires into a hexagonal shape. Thereafter the wires pass through roller discs 33, 47 and roller discs (49), (50) and (51). Fig. 1 (not shown), and is bound at intervals with a securing material 128 at binding stations located between the roller dies. The cable then passes through a moving clamp 53, Fig. 5, over a roller table 163 and a traverse device 161 to a large take-up drum 159. To prevent overstressing and kinking of the strand as it is wound onto the drum 159, the strand is rotated or allowed to rotate in alternate directions about its own axis through a range of approximately 270 degrees as it is reeled. In addition the securing material 28 is such that it will stretch sufficiently to allow the strand to open up as it is reeled, but not sufficiently to allow the wires in the strand to become a loose bundle. The securing material 28 may be a rayon-reinforced plastic tape wherein a rayon yarn or filament reinforcing is mounted in acetate or polyester film matrix, with a rubber resin backing providing adhesion.
Patent GB-1501210-A (GB)
Title: Apparatus for copying from an original onto sheets cards or tickets
IPC: G03G15/01
Filed: 1975-09-25
Abstract: 1501210 Applying markings to copy sheets G RITZERFELD 25 Sept 1975 [20 Dec 1974] 39267/75 Heading B6C In apparatus where part or the whole of an original is copied on to sheets, cards, or tickets, marks are applied to the individual sheets, cards or tickets to indicate the application to which the sheet, card or ticket is to be allocated. The invention may be applied, for example, to a rotary duplicator, Fig. 1, a direct electrostatic copier, Fig. 2, or a xerographic copier, Fig. 3 (Figs. 1 to 3, not shown) provided with devices capable of selecting from only part of the original to be copied. After the printing step the sheets, cards or tickets are fed between conveying roller pairs 20, 21, 22 and 23, 24 and 25, Fig. 4, under a marking device comprising a plurality of separate rollers 27 positioned across a feed path and co-operating with impression rollers 26. Individual rollers 27 in contact with reservoir rollers 30 containing different-coloured inks may be selectively lowered under the action of electromagnets 28, when a card has been sensed at 31. The selective control of the electromagnets may be manual, from a keyboard, programmed from punched card or tape, or in response to markings on the original being copied. A counter can be incorporated in the control system. Marks can be applied to both sides of the sheet, card or ticket if a further set of inking rollers (91) is provided on the other side of the feed path, Fig. 5 (not shown). The inking rollers 27 may be patterned.
Patent GB-959919-A (GB)
Title: Neocarborane and derivatives thereof and their preparation
Inventor: GRASTEIN DANIEL
IPC: C07F5/02
Filed: 1962-10-17
Abstract: The invention comprises neocarborane and carbon-substituted derivatives thereof, including 11-methylneocarborane, 11,12-bis (hydroxymethyl) neocarborane, 11, 12-neocarboranyl dicarboxylic acid and its acid chloride and amide, 11-methyl -12- neocarboranyl carboxylic acid, and dimethyl-11, 12-neocarboranyl dicarboxylate. Neocarborane or derivatives may be made by heating carborane or an alkylcarborane to a temperature of 400 DEG  to 500 DEG C. 11, 12-bis (hydroxymethyl) neocarborane is made by isomerizing carborane at 400 DEG  to 500 DEG C., reacting the neocarborane with butyllithium to form dilithium neocarborane and treating this with paraformaldehyde and acidifying to form the desired product. 11, 12-neocarboranyl dicarboxylic acid is made by forming dilithium neocarborane and treating it with carbon dioxide and acidifying the product. By reacting the acid with methanol the dimethyl ester is formed. The formation of the acid chloride and amide are exemplified. Isopropylneocarborane and methyl-neocarborane are made from the corresponding carboranes.
Patent GB-1044398-A (GB)
Title: Display stand
IPC: G09F1/14
Filed: 1964-09-29
Abstract: 1,044,398. Stands. R. S. WINSER. Sept. 3, 1965 [Sept. 29, 1964], No. 39644/64. Heading A4H. A stand comprises a support 19, e.g. for carrying a display card, having a ball 20 at its lower end, a centrally apertured base member 13, 14 accomodating the stem 11 of a resilient, rubber or like member formed integrally at its upper end with an increased dameter, disc portion 12, and a cover member 17, 18 screwed to the base 13, 14 to hold the ball 20 against the resilient disc. The top of the rod 19 has a slotted ball 22 (Fig. 1, not shown) screwed thereto to hold a card. The two part body comprises a cylindrical block 13 and a flanged disc 14 in face to face, frictional engagement. Slots 21 are provided in the cover 17. The stem 11 may be formed at its lower end with a suction cup 10. Alternatively, the base is screwed to a support through selectively aligned apertures 24, 25 in the block 13 and disc 14.
Patent GB-1276042-A (GB)
Title: Process for simultaneously electroplating discrete areas of a non-conductive substrate
Inventor: KULESZA FRANK WILLIAM
IPC: H05K1/09
Filed: 1970-08-19
Abstract: 1276042 Printed circuits F W KULESZA 19 Aug 1970 [21 Aug 1969] 39832/70 Heading H1R [Also in Division C7] A plurality of discrete areas are electroplated on a non-conductive substrate by depositing over each discrete area, e.g. through a screen having a positive image of the areas, an uncured thermosetting conductive adhesive and curing it to become infusible and insoluble; electrically interconnecting the areas by depositing a thermoplastic conductive adhesive upon the substrate either before or after the deposition of the thermosetting adhesive, e.g. applied as a grid or pattern of stripes upon the substrate surface or as a solution through a negative image screen upon the entire non-image area of the substrate; covering the conductive area(s) not to be plated with a plating resist; connecting an electrode to the conductive adhesive and electroplating the exposed areas, e.g. with Cu; and removing the plating resist, then the thermo - plastic adhesive using a solvent to which the thermoset adhesive is resistant. Preferably a single solvent is used to remove the resist and thermoplastic adhesive. The adhesives may be made conductive by loading with Ag particles. The thermosetting adhesive is preferably an epoxy resin (e.g. an epichlorohydrin/bisphenol A- type) with an aromatic amine hardener, e.g methylenedianiline or metaphenylenediamine, finely divided silver, butyl "Cellosolve" (Registered Trade Mark) and xylol. The thermoplastic adhesive may similarly contain an epoxy resin, or acrylic acid resin copolymer in toluene, polyvinylpyrrolidone or, but without hardener. A phenolic resin may be used. The plated substrate may be a plastic printing roll, a decora tive metallized plastic or ceramic, or a printed circuit board, e.g. of glass fibre embedded in epoxy resin.
Patent GB-1055635-A (GB)
Title: Automatic machine for cutting cylindrical workpieces in accordance with predetermined traces
Inventor: HERENGEL JEAN
IPC: B23C3/34
Filed: 1963-10-09
Abstract: 1,055,635. Milling. COMMISSARIAT A L'ENERGIE ATOMIQUE. Oct. 9, 1963 [Oct. 9, 1962], No. 39867/63. Headings B3B and B3K. A milling machine (for machining helical fins on a magnesium alloy sheath for a nuclear reactor fuel element &c.) comprises means for rotating and axially advancing a workpiece 16 past a set of cutter spindles 24a, 24b, movable perpendicularly to the work axis, the work being carried on a table 8 movable on a main table 2 under the control of a cam 9 movable between abutment 2a. The main table 2 is vertical and is counterbalanced. It is advanced intermittently by a ratchet drive 4 and a screw 3 and can be rapidly retracted through a clutch 22 and a motor 21. The cam 9 is rotated by a splined shaft 10 rotated by a motor 7. The cutters 26a, 26b are rotated by motors 25a, 25b and can be advanced hydraulically. In operation, the tube workpiece 16 is mounted on a mandrel 17 and clamped between a pneumatically-operated centre 13 and a live centre 15 connected to a helical lead cam 20. The cutters are advanced and the table 8 is lowered by the cam 9, the work being rotated by the cam 20. The cutters are withdrawn when the table 8 has reached its limit of movement and the lead-screw 3 is then rotated by a fraction of a revolution by the motor 7 to move the table 2 and the cam 9 downwards. The table 8 is then raised and the cycle repeated. Automatic means are provided to stop the machine in the event of swarf build-up, the breaking of a tool or a pneumatic pressure drop. The feed rate is 800 mm./min. and the cutter speed 40,000 R.P.M. High speed air streams 27a, 27b cool the tools and break up the cuttings. Several workpieces may be machined simultaneously by providing extra sets of cutters and centres.
Patent GB-1088440-A (GB)
Title: Current collector, preferably for variable-ratio transformers
Inventor: LASCH WERNER
IPC: H01R39/00
Filed: 1966-09-07
Abstract: 1,088,440. Current collectors. TECHNISCHPHYSIKALISCHE WERKSTATTEN VEB. Sept. 7, 1966, No. 39939/66. Heading H2E. A current collector, in which there is no branching off of the current, consists of a carbon brush 4 mounted and retained in a bush or box 3 which may slide in guide bush 1 of collector arm 6. An insulating layer 2, which may be on either or both of the bushes, is provided in the sliding region so that all the current collected passes through wire 5. The collector arm may be made of aluminium alloy and the insulation may be an anodized layer.
Patent GB-1305338-A (GB)
IPC: F02M59/10
Filed: 1971-08-25
Abstract: 1305338 Fuel injection systems SULZER BROS Ltd 25 Aug 1971 [2 Sept 1970] 39942/71 Heading F1B A diesel fuel injection system comprises a fuel pump 10, Fig.1, a pressure amplifier including a piston having a first part 25 of larger cross-sectional area and a second part 26 of smaller cross-sectional area, the fuel pump delivery pressure acting on the first piston part and the cylinder space of the second piston part being connected to a fuel chamber of an injection valve which is opened by the pressure of fuel in the chamber. The fuel pump 10 has an inlet valve 12, a delivery valve 17 and an overflow valve 14, the timing of which can be varied by an eccentric 16 to control the end of injection. Fuel at pump delivery pressure passes via duct 18 to act on piston part 25 so that the piston  is moved to force fuel, which previously has passed through non-return valve 29, at a proportionately higher pressure from chamber 30 to the chamber of the injector 32 causing the valve 33 to open to commence injection. Leakage fuel passes to the reservoir via duct 34. The pressure in duct 18 is limited by a valve 19. In another embodiment the pump 10, Fig.2 is supplied by a feed pump 41 and pressure in the duct 18 is passed to a groove 45 so that when the piston 47 descends below groove 45 the pressure in space 30 rises abruptly. A constriction 42 damps the upward movement of the piston 47. In a modification of this embodiment a non-return valve (50) Fig. 3 (not shown) is fitted in duct 31 and a constriction (51) is provided between the non-return valve 40 and the pump 10. The pressure amplifier and injector may be combined in one housing.