baber/WOPTO huggingface dataset:
Patent GB-1429949-A (GB)
Title: Methods of making reinforced fibrous mats
IPC: D21H13/40
Filed: 1973-10-22
Abstract: 1429949 Method of making glass fibre mats JOHNS-MANVILLE CORP 22 Oct 1973 [27 Oct 1972] 49096/73 Heading D2B A method of making a reinforced glass fibre mat for use in the manufacture of roofing shingles comprises (a) forming a slurry comprising individual monofilament glass fibres and bundles of such fibres held together by an adhesive insoluble in the liquid used for forming the slurry; (b) mixing the slurry to disperse the fibres; (c) forming the slurry into a mat; (d) applying a binder to the mat and (e) heating the mat treated with the binder, wherein the individual monofilament glass fibres are between 22 and 35 mm-long and comprise between 70 and 95% by wt of the total fibrous material in the mat, and the glass fibre bundles are between 65 and 75 mm. long and comprise between 5 and 30% by wt. of the total fibrous material in the mat. The binder may be a urea-formaldehyde resin. A cationic surfactant may be used to disperse the fibres in the slurry.
Patent GB-1012348-A (GB)
Title: Microwave amplifier tubes embodying slow-wave structures
IPC: H01J25/44
Filed: 1962-12-31
Abstract: 1,012,348. Travelling-wave tubes. S.F.D LABORATORIES Inc. Dec. 31, 1962 [Jan. 3, 1962], No. 49121/62. Heading H1D. A microwave amplifier tube comprises means for producing a stream of electrons, having an adjacent array of resonant bases 6a, 6b forming a forward slow wave circuit, means for coupling amplified signal wave energy from said slow wave circuit and means 8 such as a plurality of conductive straps connected to the bases in alternate disposition to capacitively couple alternate bases to establish a desired forward slow wave mode of propagation.
Patent GB-1476010-A (GB)
Title: Vehicle roof
IPC: B60J7/10
Filed: 1975-11-28
Abstract: 1476010 Opening roofs FORD MOTOR CO Ltd 28 Nov 1975 [21 March 1975] 49129/75 Heading B7B A vehicle roof has an opening 2 which is normally closed by a flap 3 having guide elements 14 along each side thereof accommodated in a pair of guide members 12, each guide member 12 being hinged to a lateral edge of the roof opening at 5 and being tiltable about its hinge 5 by a respective tilting mechanism 6, the flap 3 being detachable from the guide members 12 by sliding of the elements 14 therealong only when the members 12 have been tilted to thus also tilt the flap. The guide members 12 are of U-shaped cross-section to receive the elements 14 which are elongated strips attached to the underside of the flap and having a series of detents 30, 31 formed therein, each tilting mechanism 6 including a spring-loaded detent 29 engageable with a selected detent 30, 31 so that the flap 3 may be held in a partially detached position relative to the members 12 to vary the ventilation of the vehicle. The tilting mechanisms 6 adjacent the rear edge of the opening 2 are operated remotely by cables 18.
Patent GB-1456995-A (GB)
Title: Signal processing apparatus
IPC: G11B20/06
Filed: 1973-10-23
Abstract: 1456995 Television MCA DISCO-VISION Inc 23 Oct 1973 [24 Oct 1972] 49386/73 Heading H4F To compensate for signal interruptions in an electrical signal, e.g. for signal drop-outs in video signals obtained from a magnetic tape or disc or any other recording medium, the occurrence of missing portions of the signal are detected and substitute signals generated. In video recording systems the brightness video signal is frequency modulated on a carrier and the loss of a portion of the signal results in an effective reduction in the frequency of the signal and a corresponding increase in brightness. The absence of half-cycles is detected by delaying the carrier by an odd multiple of the period of a half-cycle (preferably one half cycle) and comparing the delayed signal with the undelayed signal, a replacement half cycle generated by a monostable multivibrator being combined with the frequency modulated signal. Specifically by using a half cycle delay, NAND gates, polarity inverters, and two monostable multivibrators (Fig. 3, not shown), any missing positive or negative half cycles are detected and replacement positive and negative half cycles generated. For drop-outs of more than one half-cycle, the output of the frequency discriminator which demodulates the above compensated frequency modulated carrier is fed directly and via a sample and hold network to an amplifier associated with a television display, so that the last good information output signal may be repeatedly supplied to the output until the information flow is restored.
Patent GB-1512678-A (GB)
Title: Electric circuit for controlling fuel injection nozzles of an engine
IPC: F02D41/36
Filed: 1975-12-04
Abstract: 1512678 IC engine fuel injectors WISSENSCHAFTLICH-TECHNISCHES ZENTRUM AUTOMOBILBAU KARL-MARXSTADT VEB 4 Dec 1975 [12 Dec 1974] 49853/75 Heading F1B In a circuit for operating electromagnetic fuel injection nozzles in an I.C. engine, in which the quantity of fuel to be injected through each nozzle is determined by the duration of energization of the respective electromagnet, two parallel branches I, II each comprise a main thyristor TH I  or TH II  connected in series with a plurality of parallel control units such as Z 1 , Z 4  or Z 2 , Z 3 , each control unit comprising a respective distributor thyristor, e.g., TV 1 , connected in series with the respective electromagnet winding, e.g., M 1 , and a quenching capacitor C is connected between the cathodes of the two main thyristors TH 1 , TH II . Winding M 1  is energized by firing TH I  and TV 1  simultaneously. When M 1  is to be de-energized, TH II  is fired, whereupon a charge subsisting on C from a previous firing of TH II  turns off TH I . The current flowing through TV 1  and M 1  is now supplied via TH II  and C instead of TH 1 , and decays rapidly as C is consequently discharged and then charged up to the opposite polarity, TV 1  and TH II  being turned off by the cessation of current. M 3  is then energized by firing TH II  and TV 3  simultaneously. When M 3  is to be de-energized, TH 1  is fired, whereupon the reversed charge on C turns off TH II . The current flowing through TV 3  and M 3  is now supplied via TH 1  and C and decays rapidly as C is consequentially discharged and then charged up to the original polarity, TV 3  and TH I  being turned off by the cessation of current. M 4  and M 2  are then similarly energized and de-energized in succession.
Patent GB-1483238-A (GB)
Title: Spring brake actuators
IPC: B60T17/08
Filed: 1975-10-02
Abstract: 1483238 Spring brake actuators CLAYTON DEWANDRE CO Ltd 2 Oct 1975 [19 Nov 1974] 50033/74 Heading F1D A spring brake actuator having an end-plate 2, which forms a cylinder 4 in which is housed a piston 6 with a rod 5, has pressure inlets 16, 18 to either side of a floating piston 13, 14 which has seals 19 and a vented passage 21, between the seals Thus, pressure from the two inlets normally balances across the piston 13, 14 and if one circuit fails the other circuit controls the piston 6 either directly or through the floating piston. If a seal fails fluid is not lost from both circuits.
Patent GB-1208965-A (GB)
Title: Elevator for charging a higher positioned conveying section
IPC: G07F11/54
Filed: 1968-10-23
Abstract: 1,208,965. Endless conveyers; platform elevators. INTERNATIONAL STANDARD ELECTRIC CORP. 23 Oct., 1968 [26 Oct., 1967], No. 50372/68. Addition to 1,134,152. Headings B8A and B8H. [Also in Division F2]  A transfer apparatus as described in Specification 1,134,152, is modified in that the friction rollers of the endless driven conveyers or the friction rollers of the elevator conveyer incorporate lost-motion devices to allow the passage of the elevator conveyer to pass a driven conveyer disposed at an undesired level without the said elevator conveyer being driven. The said devices comprise an annular segment 16 secured to the shaft 11 of the corresponding conveyer and mounting a pair of pins 17 each to receive one end of a pair of springs 18. The other ends of the springs are attached to a common peg 19 fixed to the rim 15 of the roller. The said rim may thus rotate through an angle α between the end of the segment 16 and the peg 19 before the motion is transferred to the shaft. On removal of the driving source the peg 19 will return to the centralized position under the action of the springs. In a further modification the rollers have teeth with pointed ends.
Patent GB-1371082-A (GB)
Title: Unitary honeycomb structure
IPC: B29C48/11
Filed: 1971-11-01
Abstract: 1371082 Honeycomb structure ENGELHARD MINERALS & CHEMICALS CORP 1 Nov 1971 [2 Nov 1970] 50735/71 Headings C1J and C1M [Also in Divisions C7 and B6] A three-dimensional unitary honeycomb structure is made by mixing an inorganic powder and a removable vehicle which is solid at room temperature and liquid at elevated temperatures, applying the hot mixture to a stencil having islands and open spaces therebetween, forcing a portion through the stencil to form a layer which cools and solidifies to a pattern according to the stencil, repeating the application so as to build up a structure with a plurality of channels therethrough corresponding to the positions of the islands on the stencil, and sintering the structure to produce the unitary structure. Structures can be made from ceramic material, glass, alumina, zirconia, an aluminosilicate, tungsten, silver, ruthenium or a mixture thereof. Fugitative materials, e.g. carbon, may be added to the ceramic composition to produce pores on sintering, and a colloidal refractory material, e.g. SiO2, may be incorporated in with the inorganic powder. The removable vehicle comprises a wax and a thermoplastic resin.
Patent GB-1217228-A (GB)
Title: Improvements in or relating to bagpipes
Inventor: WRIGHT GEORGE ALEXANDER
IPC: G10D7/06
Filed: 1968-10-28
Abstract: 1,217,228. Bagpipes. G. E. WRIGHT. 8 Oct., 1969 [28 Oct., 1968], Nos. 50996/68 and 23439/67. Addition to 1,176,987. Heading G5J. A wind instrument has a chanter reed 6 and a drone reed 26 enclosed in a common conduit 10 having a blowstick 30 and chanter 2 directly connected to said conduit 10, which is apertured on the blowstick 30 side of said drone reed 26, a bag 42 enclosing the apertured part, and air has to pass through the drone reed 26 in order to get to the chanter reed 6. Air blown into conduit 10 through the nylon blowstick 30 inflates the bag 42 and also passes through a slot 24 in the brass disc 22 and over the brass drone reed 26. The air then passes through the double blade drone reed 6 and out into the chanter 2. Two or more drone reeds may be mounted on the disc 22.
Patent GB-1217484-A (GB)
Title: Improvements relating to contact operating mechanisms for electric circuit-breakers
Inventor: ROBERTS FREDERICK ARTHUR
IPC: H01H33/666
Filed: 1966-11-15
Abstract: 1,217,484. Vacuum switches. A. REYROLLE & CO. Ltd. 14 Feb., 1968 [15 Nov., 1966], No. 51074/66. Heading H1N. In a vacuum switch, the moving contact 20 is actuated by link 30 through a lever 32 having a central pivot 40 which is resiliently held by spring 44 against a fixed fulcrum plate 41 about which the lever 32 pivots when the contacts 19, 20 are separated but which is disengaged due to compression of the spring 44 as the contacts engage whereby the spring 44 applies a resilient bias to the moving contact 20. The assembly comprises three vacuum switches 11 actuated from a single shaft 28 through three vertical links 30. In a modification the contact carrier is actuated by a downwardly extending link (105), Fig. 4 (not shown), through a lever which carries a rubber roller (113) engageable with a fixed stop (115) about which the lever (103) pivots when the contacts open, the spring unit (108) thereby acting to assist the opening of the contacts.
Patent GB-1246129-A (GB)
Title: Stored program electronic computer
Inventor: SALTINI FABRIZIO
IPC: G06F9/06
Filed: 1968-10-22
Abstract: 1,246,129. Digital computer. ING. C. OLIVETTI & C. S.p.A. 22 Oct., 1968 [14 Dec. 1967], No. 51196/69. Divided out of 1,246,128. Heading G4A. The invention relates to a stored programme electronic computer having instructions transferable from an external store to an internal store containing specialized and data registers. The description is the same as that in Specification 1,246,128 and additionally describes how a macroinstruction controls a printer (Figs. 6, 7, not shown).
Patent GB-1432638-A (GB)
Title: Fluid bearing assemblies
IPC: F16C32/06
Filed: 1973-11-05
Abstract: 1432638 Bearings SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 5 Nov 1973 [3 Nov 1972] 51298/73 Heading F2A A rotatable body 1 is supported by a plurality of bearing members 8, each comprising a piston 12 slidable in a blind bore provided in a support structure 9 disposed radially outwardly of the body 1 and having a bearing pocket 7 located in a bearing surface 6 located at one end of the piston 12 for co-operation with a peripheral surface 5 of the body 1, there being means 15, 20 for axially adjusting each piston 12 in its bore and wherein a clearance space 22 is provided between the other end of each piston 12 and the closed end of its bore, means 23, 24 being provided for connecting the pockets 7 and the spaces 22 to a source of fluid pressure (not shown). In the embodiment shown, the axial adjustis achieved by rotating a projecting square end 21 of a spindle 20 connected to a jacking screw 15 by a pair of gear-wheels 19, 18.
Patent GB-1008488-A (GB)
Title: Improvements relating to logical computer devices
IPC: G11C19/12
Filed: 1963-12-31
Abstract: 1,008,488. Circuit assemblies. ZAIDAN HOJIN PARAMETRON KENKYUSHO. Dec. 31, 1963 [Dec. 31, 1962; May 21, 1963], No. 51382/63. Heading H1R. [Also in Division H3] In a parametron device for a logical computer, printed wiring is used to couple circuit elements. The arrangement of Fig. 1, in which parametron P1 is coupled to parametrons P2, P3 via transformers F, F2, F3, is realised as shown in Fig. 3A. Transformer F comprises two magnetic rod cores carrying series-connected coils to which the output Vf of P1 is supplied; these cores are mounted between supporting plates PL1, PL2, which may have magnetic short - circuiting plates (not shown) thereon. Coupling loops L2, L3 &c. are formed by printed wiring on circuit boards PB1; PB2 ... PBn, through apertures in which boards the cores pass. Transformers F2, F3 (not shown) are similarly constructed. Loops L2, L3 may comprise a plurality of turns, and each transformer may have only a single rod core, the magnetic shortcircuiting plate in this case being annular and mounted around the relevant aperture in the circuit board. In the parametron shown in Fig. 4, cores G1, G2 are non-linear and may be of ferrite, or of permalloy coated on a metal or glass cylinder; a tuning capacitor C is connected across coils G, Ga on the cores Gl, G2, which are inserted through apertures in circuit boards (not shown) carrying printed coupling loops. To excite the parametron in the transverse mode, current is passed in the direction I 2# T; in the parallel mode, a HF magnetic field H 2#P  is established, as by exciting coils printed on additional circuit boards. In a modification, Fig. 6A, two pairs of cores G1a, G1b and G2a, G2b are used; magnetic films of appropriate magnetizability are employed to obviate the need for coils on the cores.
Patent GB-1126757-A (GB)
Title: Purine derivatives
IPC: C07D473/18
Filed: 1966-11-16
Abstract: 1,126,757. Purine derivatives. AJINOMOTO CO. Inc. 16 Nov., 1966 [16 Nov., 1965 (2); 15 Dec., 1965], No. 51449/66. Heading C2C. The invention comprises purine derivatives of the formula where R represents a hydroxyl, methoxy or ethoxy group or a chlorine atom, and salts thereof. The 6-alkoxypurine-3-N-oxide derivatives may be obtained by oxidizing the corresponding purine with hydrogen peroxide or an organic acid peroxide, preferably at about room temperature and generally in the presence of a solvent. The 6-chloropurine-3-N-oxide may be obtained by the oxidation of the corresponding chloropurine under conditions similar to those described above except that the reaction is carried out under anhydrous conditions. Hypoxanthine-3-N-oxide may be obtained by heating the 6-chloro- or 6-alkoxy-purine-3-N- oxides described above in aqueous alkaline solution. The above purine compounds may be converted to other purine derivatives and in specific examples 6,8-dioxypurine is prepared from hypoxanthine-3-N-oxide by reaction with formic acid or acetic acid, xanthine and 6,8- dioxypurine, are obtained by reacting hypoxanthine-3-N-oxide with acetic anhydride and subsequent hydrolysis, 6,8-dichloropurine (also some 2,6-dichloropurine) is obtained by reacting hypoxanthine-3-N-oxide with phosphorus oxychloride in the presence of N,N-dimethyl aniline, 8-mercaptohypoxanthine (also some 2-mercaptohypoxanthine) is obtained by reacting hypoxanthine-3-N-oxide with thioacetic acid and guanine is obtained by reacting hypoxanthine-3-N-oxide with acetic acid/pyridine to form 1-(2-hypoxanthyl) pyridinium acetate which is subsequently hydrolysed.
Patent GB-516024-A (GB)
Abstract: 516,024. Drying-oils. POLLAK, J. E. (Naamlooze Vennootschap Industrieele Maatschappij Voorheen Noury & Van der Lande). June 20, 1938, No. 18274. [Class 91] Improved drying-oils are obtained by mixing Isano oil with one or more drying or semidrying vegetable or fish oils at room temperature; driers may be added.' One lb. of Isano oil to one-four lb. of vegetable or fish oil is suitable: For example, 1 1b. of Isano oil is mixed into 4 lb. of sardine, soya or raw or varnish linseed oils containing-naphthenate of lead, cobalt, or manganese.
Patent GB-1494836-A (GB)
Title: Electron discharge devices
IPC: H01J43/02
Filed: 1974-11-29
Abstract: 1494836 Photomultipliers RCA CORPORATION 29 Nov 1974 [29 Nov 1973] 51813/74 Heading H1D An electron multiplier device comprises photocathode 16, dynode 20, at least one other dynode 22-28 and an anode, the active region of dynode 20 including an area which in crosssection in one plane is of undulating curvature formed by successive regions curving in alternate directions, and in a plane perpendicular to said one plane is rectilinear. In an alternative, electrode 20 is a photocathode. Photocathode 16 is omitted and at least one other dynode is present. Section L1 (Fig. 3, not shown) provides an electrostatic shield and ensures focusing between dynodes 20, 22 and 24, and may be replaced by a separate electrostatic or magnetic focusing structure. The arrangement ensures uniform collection of the electron stream from dynode 20 irrespective of the points of origin. Additional focusing electrodes (e.g. rod 62) may be included and electrostatic or magnetic focusing electrodes (e.g. rod 62) may be included and electrostatic or magnetic focusing may be used. Annular focusing ring electrode 42 is secured to ceramic plates 18a, 18b by tabs 44, 46, characteristics being improved by a tapered geometry (Fig. 5, not shown) and aperture 54 preferably being covered by a focusing grid 43. Semi-transparent photocathode 16 is connected to one of the pins (48), (Fig. 1, not shown) by wire (50) and aluminized coating (52) which provides a shield and electrostatic focusing. Emissive surface 56 may be secondary emissive beryllium oxide on a 0À01 cm. Cu-Be substrate or photoemissive Cs 3 Sb, in the latter case a light permeable grid replacing electrodes 16, and 42. Scan sensitivities are discussed with respect to Figs. 4a, 4b (not shown) and dimensions given. Reference is made to circular cage, elongated staggered, "head-on" and "side-on" type multipliers.
Patent GB-1205404-A (GB)
Title: Improvements in or relating to automatic frequency control equipment for use with a variable frequency electrical oscillator
IPC: H03L7/04
Filed: 1967-11-15
Abstract: 1,205,404. Frequency discriminators. NIPPON ELECTRIC CO. Ltd. 15 Nov., 1967 [17 Nov., 1966], No. 52049/67. Heading H3A. A frequency discriminator 11 for controlling the frequency of an oscillator 1 comprises branching means 2 feeding part of the oscillator output to a line which is coupled at 3 to two resonators 4 and 5, the direct and reflected signals being combined in detectors 7 and 8 the outputs of which are subtracted and filtered at 9 to derive an error signal used to control the frequency of the oscillator. One resonator 5 has a high loaded Q and the other a low loaded Q so that the overall discriminator characteristic (Fig. 3, not shown) has a wide pull-in range due to the contribution of the low Q resonator 4 but at the same time can stabilize the oscillator within a narrow frequency range due to the contribution of the high Q resonator 5.
Patent GB-1410048-A (GB)
Title: Filters for tobacco smoke
IPC: A24D3/04
Filed: 1972-11-13
Abstract: 1410048 Surface active carbon filters BRITISH-AMERICAN TOBACCO CO Ltd 26 Oct 1973 [13 Nov 1972] 52348/72 Heading A2C A tobacco-smoke filter comprises regions extending substantially longitudinally of the filter and separated by a diaphragm or diaphragms of vapour porous material into at least one region providing a through path for smoke and at least one region which is filled with carbon and is closed against smoke flow through the carbon. In the embodiments illustrating the invention the carbon filters are interposed between tobacco rod and conventional cellulose acetate filters. Central smoke channel 7 (Fig. I) is annular and surrounded by highly vapour porous paper separating the carbon particles therefrom. Fig. 2 shows the disposition of smoke channel and carbon filter reversed and Fig. 3 shows the carbon filter as a porous bag 11 centrally disposed and ensuring a large vapour contact therewith. Other mountings for the carbon containers are shown in Figs. 6, 7 and 8.