baber/WOPTO huggingface dataset:
Patent GB-1184532-A (GB)
Title: Improvements in and relating to High Vacuum Electronic Valves.
Inventor: HOLZ ALEXANDER RUSTER
IPC: H01J21/02
Filed: 1968-03-13
Abstract: 1,184,532. Magnetrons. PATELHOLD PATENTVERWERTUNGS - UND ELEKTRO-HOLDING A.G. 13 March, 1968 [15 March, 1967], No. 12282/68. Heading H1D. A high vacuum electronic valve comprises an elongate control electrode 1 surrounded by an anode 4 which has a number of spaced elongate recesses 7 extending parallel to the control electrode, an elongate cathode 9 disposed in each recess, an arrangement (not shown) for generating a magnetic field to reduce the number of electrons reaching the control electrode, and a pair of plate-like separator electrodes 31, one located either side of the cathode 9 in each recess. The penetration A of the separator electrodes 31 into the space between the anode and control electrode is set by the requirement that when there is no current flowing, the desired valve amplification factor is equal to the ratio of the electric field strength generated at the cathodes per unit control voltage to the electric field-strength generated at the cathodes per unit anode voltage. As shown, the separator electrodes 31 are formed by a single U-shaped cylindrical unit, each fastened to a rod 16 which forms a part of the cathode tensioning frame comprising plates 10 to 14 and rods 15 to 17 and a spring 23 to hold the cathodes under axial tension. To provide the magnetic field a solenoid coil may be coaxially disposed around the anode 4, and the valve may be cooled by a coolant, e.g. water, flowing in the annular gap between the solenoid coil and the anode 4, which may have cooling fins. An additional grid-shaped control electrode (41), Fig. 4 (not shown), may be arranged between each cathode and the control electrode in the region between the separator electrodes of a respective cathode. An alternative embodiment, Fig. 3 (not shown), has two concentric cylindrical control electrodes, one inside and the other outside the anode, with the anode recesses extending through the anode wall and extended plate separator electrodes so that an electron stream is emitted from either side of the cathode.
Patent GB-1261643-A (GB)
Title: Non-linear coder
IPC: H03M1/00
Filed: 1969-03-07
Abstract: 1,261,643. Analogue/digital converters. FUJITSU Ltd. 7 March, 1969 [9 March, 1968], No. 12290/69. Heading G4H. In a non-linear analogue/digital converter in which the converter characteristic is represented by a series of straight line segments, the segment in which the input lies is first determined and the position within the segment is then found. If the logarithmic coder of Fig. 6 after the input has been rectified and a sign bit determined the input is fed to a comparator 10 together with a reference level derived by applying a signal at the mid point of a diode switched ladder network from stage FF4 of a register FF1-FF7. In dependence on the relative values of the input signal and reference the "1" bit in the stage FF4 is shifted to either stage FF2 or FF6 this process being repeated until an input to the ladder generating a reference signal equal to the start of the required segment is found. The comparison is then made between the input signal and the selected reference to which is added a signal from a resistor network controlled by bi-stables FF8, FF9, FF10 selected under the control of logic circuitry until the position within the segment is found when the reference signal equals the input. The apparatus may be modified to give a hyperbolic characteristic (Fig. 10, not shown).
Patent GB-667030-A (GB)
Title: Improvements in and relating to methods of preparing 3-vinylpyrene
IPC: C07C1/24
Filed: 1949-05-10
Abstract: 3-Vinylpyrene is prepared by the vapour phase catalytic dehydration of 3-(a -hydroxyethyl) pyrene with activated alumina. Pyrene is acetylated with, e.g. acetic acid or anhydride, acetyl chloride or bromide to form 3-acetylpyrene which is hydrogenated to 3-(a -hydroxyethyl) pyrene.  The acetylation is effected using a Friedel-Crafts' catalyst which may be dissolved or suspended in an inert solvent such as carbon disulphide, nitrobenzene, and carbon tetrachloride, preferably at 20-45 DEG  C.  The product is hydrogenated and the ketone separated from the organic layer by distillation.  Hydrogenation to the alcohol may be effected with platinum, platinum oxide, palladium or copper chromite as catalyst, preferably at pressures of 100-3000 p.s.i. and in a solvent such as methanol.  Dehydration to vinyl pyrene may be effected by dissolving the alcohol in, e.g., benzene, toluene or dioxane and feeding to a column packed with alumina pellets at, e.g., 340-360 DEG  C., and about 6 mm.  The product may be purified by recrystallization. Polymerization may be inhibited by catechol or hydroquinone. Polymers or copolymers are used in the plastics and coating arts and as dielectrics.  The Specification as open to inspection under Sect. 91 comprises the preparation of other vinyl pyrenes starting with other acetyl pyrene isomers.  Polyacetyl pyrenes obtained by further acetylation yield polyvinyl pyrenes.  Dehydration of the carbinol may be effected with chemical dehydrating agents such as KHSO4, ZnCl2, and P2O5, or catalysts containing activated alumina with oxides of Cr, W, Mo or Mn. 3-Vinyl pyrene may also be prepared by decarboxylating pyrenyl - 3 - acrylic acid which is dissolved in benzene and quinoline and passed through copper borate-alumina at 520-580 DEG  C. and 10-20 mm.  This subject-matter does not appear in the Specification as accepted.
Patent GB-139692-A (GB)
Title: Improved folding bags
IPC: B65D30/10
Filed: 1919-05-19
Abstract: 139,692. Miblatt, H. May 19, 1919. Bags. - A folding bag made of leather, American cloth, paper cloth, &c. comprises two plain sides a and two intermediate sides with creases c, the four sides being stitched together along their edges b. The side pieces are each formed with a tapered lower portion so arranged as to form a square base to the bag when it is distended. The plain sides a may be broader than the creased handles e, which may be bound with narrow strips of leather, cloth, &c.
Patent GB-179075-A (GB)
Title: Improvements in two-stroke oil engines
IPC: F02B25/00
Filed: 1921-05-02
Abstract: 179,075. Ransomes, Sims, & Jefferies, Ltd., and Thomas, J. H. May 2, 1921. Cylinders receiving liquid fuel.-Oil is delivered by air pressure from a tank T to a perforated cap I in the compression space, the c.elivery being controlled by an ecentrically-actuated valve K. The delivery is timed to take place at the end of the working stroke; air compressed in the crank case enters the cylinder through the transfer port X, and as it is being compressed part enters the cup, the lighter constituents being ignited by the heat of compression and driving the remainder of the fuel into the cylinder, where it is ignited. The air is drawn into the crank case through the valves Q and part of the air compressed is used to maintain the air pressure in the tank.
Patent GB-326075-A (GB)
Title: Improvements in and relating to weighing scales
IPC: G01G1/00
Filed: 1929-04-23
Abstract: 326,075. Burman, E. March 18, 1929, [Convention date]. Right to Patent relinquished. Pendulum-weight apparatus.-In apparatus in which the indicating mechanism operates in a plane at right angles to the longitudinal axis of the weigh beam and the parallel check bars and links extend upwardly into a vertical casing, the casing at one or both sides of the upper end above the indicating pointer is widened to receive the check links. As shown, the support 1 for the check links 5-6, 7-8 of the load and weights pans respectively is mounted in the enlargements 3, 4 at the top of the casing 2, the whole being arranged above the indicating pointers 11, 12.
Patent GB-117177-A (GB)
Title: An Improved Air Tube for Pneumatic Tyres and Process of Manufacturing the same.
Inventor: JEFFRIES ISAAC BENJAMIN
IPC: B60C5/04
Filed: 1917-09-04
Abstract: 117,177. Jeffries, I. B., (trading as Benjamin, I.). Sept. 4, 1917. Air-tubes.-Relates to air-tubes of the kind described in Specification 106,746, and in which the tube is lined with rubber strips having loose overlapping edges cut into flaps. According to the present invention, the strips in the unvulcanized state are secured to a similar backing which may be vulcanized to, or itself form, the air-tube. In the form shown in Fig. 5, the strips a on the backing b are arranged within the tube, the ends e, e<1> of which are telescoped and the backing lapped to ensure a continuous puncture-closing layer. An endless band may be formed from lengths of the built-up backing laid over a mandrel, and joined along the inner edges to form a tube. Fig. 3 shows how the pressure on the mandrel results in the flaps being flattened to give a smooth inner surface to the tube. To prevent adhesion, the strips may be coated with chalk; d represents the usual fabric wrapping applied during moulding. In use, the strips may be coated with glycerine, soft-soap, or other non-drying material, and a layer or layers of a self-sealing composition may be embodied in the tube.
Patent GB-566615-A (GB)
Title: Means for feeding rivets or like small headed members to sorting devices
IPC: B65G47/14
Filed: 1943-08-07
Abstract: 566,615. Feeding rivets. STANDARD MOTOR CO., Ltd., and 'FRIEND, W. A. E. Aug. 7,1943, No. 12780. [Class 117] Rivets or like headed articles are fed to a device for sorting them by means of pairs of rotating arms 14 spaced so as to take the maximum diameter stem and retain the rivets by their heads. The arms dip into a hopper 12 containing the mass of rivets, and the leading edge 16 is smoothly curved while the trailing edge 17 is substantially straight and merges into the edge 16 of the succeeding arm. The arms are mounted on a shaft 13 driven by a Geneva-stop mechanism, and during the intervals between the intermittent movements, the rivets slide down the straight portions of the arm to a shoot which delivers them to the sorting device ; stationary guard plates 29 maintain the rivets in place during this movement. Preferably, the drive incorporates a friction element to prevent damage due to jamming.
Patent GB-437300-A (GB)
Title: Improvements in and relating to duplicators
IPC: B41L27/26
Filed: 1934-04-27
Abstract: 437,300. Stencil-duplicators; inking- apparatus. NORMAN, J. E., Zanetic Works, Hallaton Street, Leicester. April 27, 1934, No. 12814. [Class 100 (ii)] Relates to stencil duplicators of the type comprising a shallow flat tray 7 carrying an inkpad 3 arranged between an upper foraminated plate 4 and a lower plate 5 and consists in having either or both of the plates 4, 5 curved with the objects of ensuring an even distribution of ink, owing to the tendency of the plates to flatten out when printing pressure is applied, and of providing copies free from creases. The plates 4, 5 may each have a handle 8 to facilitate lifting for inspection, and the plate 4 may be hinged to the plate 5 or to the tray. The plate 5 is preferably of rigid material but when resilient a rod may be attached thereto, the ends of the rod engaging in elongated holes in the side walls of the tray to accommodate the vertical movement due to flexibility ; the rod may be of such length that by moving the plates to one side the rod may be released from one of the slots thus enabling the plates to be lifted out of the tray. Lugs may be substituted for the rod, or tongues may be provided to engage the edges of the curved plates at the corners. To prevent ink from overflowing from the pad on to the edges of the plates when pressure is applied, small portions 10 of the material between cuts 9 formed in the edges of the plates may be pressed down.
Patent GB-548613-A (GB)
Title: Improvements in and relating to masking or screening devices for lamps
IPC: F21V11/00
Filed: 1941-10-06
Abstract: 548,613. Vehicle lamps. HARTLEY, V. Oct. 6, 1941, No. 12882. [Class 75 (iv)] A mask or screen for vehicle and other electric lamps comprises a number of louvres 5 having upwardly projecting edges 6 each formed at the rear of its side edges with gaps 7 to engage U-sectioned gapped clamping members 11 and at its front edge with an upwardly projecting tongue 10 passing through a semicircular aperture 9 in the louvre above. The parts are soldered or welded together. The louvre assembly is supported in front of a diffusing glass plate 20 at the centre of a back plate 1 substituted for the usual glass front of the lamp by a hook ended member 13 depending from a cowl 4 welded to the plate 1. The top louvre is spaced from the cowl 4 by a member 15 and the louvre assembly is stiffened by an arched member 12 inserted through the apertures 9. Flanged side cheeks 16 spot-welded to the plate 1 carry strips 18 formed with hooks 19 engaging the members 11. A stiffening member 17 may be arranged below the lowest louvre 5. The louvres are formed with upwardly-pressed flanges 8 disposed at such an angle as to prevent direct rays issuing upwardly. Upwardly directed reflected rays are prevented by the flanges 6, 8 and by coating the louvre assembly by a suitable matt pigment. Specification 536,226 is referred to in the Provisional Specification.
Patent GB-580386-A (GB)
Title: An improvement in or relating to filing or abrading apparatus
IPC: B23D71/00
Filed: 1944-07-06
Abstract: 580,386. Broaching. SAGAR & CO., Ltd., J., SAGAR, J. G., COLLINSON, K. H., and NUTTON, H. July 6, 1944, No. 12899. [Class 83 (iii)] [Also in Group XXIII] In filing-apparatus comprising filing-elements secured to an endless flexible band, the elements or the band are or is provided with longitudinally extending ribs or flanges adapted to hold the elements from lateral misalignment relative to the band. The element a, Fig. 2, is formed with longitudinal ribs a<1> between which lies the band b to which each element is secured by rivets c near its leading edge. Alternatively, the edges of the band b may be upturned as at b<1>, Fig. 3. In another form, Fig. 4, the band has a central rib b<2> which co-operates with a corresponding recess a<4> in eath element a. The inclined sides of the rib and recess serve to centralise the elements as the band straightens out on leaving a driving or supporting pulley. The underside of the trailing ends and the tops of the leading edges of the elements are rebated so that the trailing end of each element overlaps the leading end of the next element.
Patent GB-584429-A (GB)
Title: Improvements in or relating to drying oils and methods of preparing same
IPC: C08F8/14
Filed: 1943-08-10
Abstract: Drying oils are prepared by esterifying a polyallyl alcohol having at least five esterifiable primary hydroxyl groups with higher fatty acids having an iodine value of at least 100.  The esterification is usually carried out by heating at 180-250 DEG  C. until the acid number of the mixture has been reduced below 20, with or without a catalyst such as hydrogen chloride, litharge, zinc chloride and p-toluene sulphonic acid, and generally in an inert atmosphere such as carbon dioxide or nitrogen.  Preferred acids are those obtained from dehydrated castor oil, soyabean oil, linseed oil, oiticica oil and perilla oil and their conjugated isomers, while fatty acid mixtures obtained from semi-drying oils such as cottonseed oil, sunflower seed oil, corn oil and sesame oil may also be used.  The polyallyl alcohols may be prepared by blowing a stream of oxygen through heated allyl alcohol.  Any free hydroxyl groups not esterified by the higher fatty acids may be afterwards esterified by a lower fatty acid or its anhydride, e.g. acetic, propionic or butyric acids, acetic anhydride, and ketene, or by benzoic acid, abietic acid, rosin or hydrogenated rosin.  In examples, polyallyl alcohol and (1) and (2) linseed fatty acids are heated in the presence of CO2; (3) soyabean fatty acids are heated together; and (4) cottonseed fatty acids are heated in the presence of carbon dioxide.  The drying oils may also be prepared by ester interchange. The products may be used in the manufacture of paints, varnishes, enamels and other coating compositions (with, e.g. mineral spirits and cobalt and lead linoleates), alkyd resins, linoleum and printing inks.
Patent GB-1143903-A (GB)
Title: Electrical switch
IPC: H01H61/01
Filed: 1967-03-20
Abstract: 1,143,903. Thermal switches. DANFOSS A.S. 20 March, 1967 [9 April, 1966], No. 12962/67. Heading H1N. Energization of a heating coil 9 causes contacts 1, 2 to close and after a delay to re-open. Two mutually opposed bimetal strips 5 and 6 are cantilever mounted end to end with the strip 5 being approximately twice as long as strip 6 to render contacts 1, 2 independent of ambient temperature. A thermal insulation layer 7 surrounds strip 5 so that strip 6 is rapidly heated to close the contacts 1, 2, and strip 5 is more slowly heated to provide subsequent opening of the contacts. On de-energization of coil 9, the more rapid cooling of strip 6 ensures that the contacts 1. 2 are not reclosed as strip 5 restores. The switch may be used to start a single-phase motor 11 by connecting the coil 9 in series with the running winding 12, and the contacts 1, 2 in series with a starting winding 11 to provide a short energization thereof. A plungeroperated switch (14, Fig. 2, not shown) actuated by excessive bending of strip 6 due to very high ambient temperature, may be provided as an overheat cut-out. Instead of contacts 1, 2 a snap-action switch (not described) may be actuated by the end of strip 5.
Patent GB-733628-A (GB)
Title: Improvements in or relating to articulated rods
Inventor: MARSH JOSEPH BENJAMIN
IPC: E21B17/20
Filed: 1952-05-22
Abstract: 733,628. Borehole apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 18, 1953 [May 22, 1952], No. 12975/52. Class 85.  A rod, for proving a bore hole, is formed of a number of interconnected, longitudinally staggered, half-round sections 1a, each section having lugs 4 near one end, complementarily shaped lugs 3 between the ends, and a partspherical spigot 5 at the other end. A section 1a, either a half-round tube or a rod, is assembled to a preceding section by engaging the spigot 5 in the partly-assembled rod and then sliding the section laterally of the central dividing plane of the rod until the lugs 3 thereon engage the lugs 4 of the previously assembled section.
Patent GB-709735-A (GB)
Title: Improvements in producing figured effects on textile fabrics
IPC: D06Q1/02
Filed: 1951-06-01
Abstract: Figured effects on cellulosic fabrics, e.g. of cotton or regenerated cellulose, are produced by applying to selected areas of the fabric an aqueous emulsion of an organic solvent solution of a thermo-hardening synthetic resin, which emulsion may also contain a white or coloured pigment drying, heating to harden the resin and then treating successively with sulphuric acid of parchmentizing strength, caustic soda of mercerizing strength and then again with sulphuric acid of parchmentizing strength.  A suitable emulsion is that known under the Registered Trade Mark "Aridye", to which may be added thickeners such as gum tragacanth, and in one example other additions are methylated spirits, octyl alcohol and sodium acetate. A non-resinous nitrogen-containing organic compound containing at least one long aliphatic chain which upon heating will render the fabric water-repellant, e.g. the compounds such as stearamidomethyl pyridinium chloride and octadecyl oxymethyl pyridinium chloride described in Specification 630,172, may be applied locally, either separately or together with the emulsion, to the fabric.  The sulphuric acid solution may contain formaldehyde and the caustic soda treatment may be effected with the fabric under tension. Specifications 522,941, 541,326, 543,860, 547,059, 592,841, 602,886, 659,395, 661,085, 663,853 and 669,739 also are referred to.
Patent GB-1525553-A (GB)
Title: Method and composition for removing sulphur dioxide from flue gases
IPC: C01B17/775
Filed: 1977-03-28
Abstract: 1525553 Sulphur dioxide removal AMERICAN ELECTRONIC LABORATORIES Inc 28 March 1977 [19 April 1976] 13014/77 Heading C1A  Sulphur dioxide is removed from waste gas streams by contacting with an aqueous composition containing a ferric salt in such an amount so as to provide at least 0À6% by weight of ferric ions, and an aluminium salt in such an amount so as to provide at least 0À05% by weight of aluminium ions, the sulphur dioxide is oxidized to sulphuric acid and the ferric ions reduced to ferrous ions; this solution is then regenerated by contact with oxygen.
Patent GB-220088-A (GB)
Title: Improvements in or relating to valve gear for internal combustion engines
IPC: F01L1/12
Filed: 1923-05-15
Abstract: 220,088. Prestwich, J. A. May 15, 1923. Valve gear; valves.-- Gear for actuating an overhead valve comprises an eccentric c carried by the half-time wheel b and connected by a rod d to a slotted member e, which is held by links o, r attached to fixed pivots n, q, the valve k being opened and closed by a bell crank h pivoted at j and engaging in the slot f of the member e. As the eccentric rod d is reciprocated, the member e is canted over at an angle so as to move the bell crank h laterally. The arm 2 of the bell crank may have a forked end engaging between collars 9, 10 on the valve stem, the collar 9 being formed on a sleeve 8 screwed to the stem, and the collar 10 being mounted loosely on the sleeve so as to bear against a spring 11. The other end of the spring abuts against a collar 12 held in position by a cotter 13.
Patent GB-642085-A (GB)
Title: Frozen food dispenser
IPC: F25D25/02
Filed: 1946-04-30
Abstract: 642,085 Refrigerators. RIFKIN, M. April 30. 1946, No. 13040. '[Class 29] [Also in Group XVII] A frozen food dispensing cabinet having a food compartment with several openings each closed by a door 11 from which extend slides 21 supporting a row of packages 14 discharged one by one by contents delivering means (see Group XVII), is cooled by an air circulating system similar to that described in Specification 645,008 and comprising a fan 33 drawing air from a rear duct 40 and through a valved orifice in the cabinet wall and forcing it over an evaporator 34 to a hood 35 having baffles 36 guiding the air to holes 37 leading into the food compartment. A flexible seal 15 is provided around each door opening. Cold air is admitted to lower drawers 25 only when air ports 27, 28 coincide due to the drawers being closed. When the lowest drawer 25 is closed an air port 31 is opened into the rear passage 40. A permanent opening 49 supplies a limited amount of air to the upper drawer when open.
Patent GB-1425279-A (GB)
Title: Engine exhaust brake unit for vehicles with combustible gas- operated ottocycle internal combustion engines
IPC: F02D9/04
Filed: 1974-03-25
Abstract: 1425279 Exhaust brakes DAIMLER-BENZ AG 25 March 1974 [30 March 1973] 13102/74 Heading F1B Operation of an I.C. engine exhaust brake unit causes closure of the engine exhaust gas duct 8 by an exhaust brake valve 9 and operation of a throttle valve 12 which regulates fuel-air mixture supply to the engine, there being upstream of the throttle valve 12 a combustible gas-air mixer 13 to which the supply of combustible gas is controlled by a diaphragm 18 operated regulator output stage 17, one side 21 of which is normally connected to atmosphere through an air pipe 22 in which is a control valve 7. The valve 7 is actuated when the exhaust brake unit is in operation to connect the one side 21 of the output stage 17 to the engine intake pipe 14 so that vacuum therein causes interruption of the supply of combustible gas to the mixer 13 by acting on the diaphragm 18. The air pipe 22 may terminate in a dust preventive screen 23 or may be connected by a pipe 24 to the air intake pipe 14. The control valve, throttle valve and exhaust brake valve may be actuated mechanically, hydraulically or pneumatically. There may be more than one actuating means, each acting on at least one of the valves. There may be two or more parallel acting regulators whose air pipes 22 are connected together and to a single control valve 7.