baber/WOPTO huggingface dataset:
Patent GB-790842-A (GB)
Title: Substituted cyclopentenes and methods of preparing same
Inventor: GUEST HOWARD RUSSELL
IPC: C07C45/72
Filed: 1954-06-22
Abstract: The invention comprises 2-(2-cyclopentenyl)-3 - methyl - 2 - cyclopenten - 4 - ol - 1 - one represented by the formula: <FORM:0790842/IV (b)/1> and (a) a process for preparing ethyl 4-(2-cyclopentenyl)-3-ketobutyrate which comprises the steps of reacting cyclopentadiene with hydrogen chloride to produce 2-cyclopentenyl chloride, heating an alkali metal derivative of acetoacetic ester with the 2-cyclopentenyl chloride to produce ethyl 2-(2-cyclopentenyl)-3-ketobutyrate, subjecting the 2-(2-cyclopentenyl)3-ketobutyrate to ketonic hydrolysis in the presence of an aqueous solution of an alkyl metal hydroxide, acidifying the reaction mixture with aqueous sulphuric acid, then distilling to form 2-cyclopentenyl acetone and heating the 2-cyclopentenyl acetone with diethyl carbonate in the presence of an alkali metal alcoholate to form ethyl 4 - (2 - cyclopentenyl) - 3 - ketobutyrate; (b) a process in which the ethyl 4-(2-cyclopentenyl)-3-ketobutyrate prepared by the latter process is converted to the alkali metal salt of 4-(2 - cyclopentenyl) - 3 - ketobutyric acid by reaction with aqueous alkali metal hydroxide; (e) a process in which the alkali metal salt prepared by the latter process is reacted with an aqueous solution of pyruvic aldehyde to form 6-(2 - cyclopentenyl) - 3 - hydroxyhexane - 2,5-dione; and (d) a process in which the 6-(2-cyclopentenyl) - 3 - hydroxyhexane - 2,5 - dione prepared by the latter process is treated with a substantially 2 per cent by weight aqueous solution of alkali metal hydroxide to convert it to 2 - (2 - cyclopentenyl) - 3 - methyl - 2 - cyclopenten - 4 - ol - 1 - one.  In the example 2 - (2 - cyclopentenyl) - 3 - methyl - 2 - cyclopenten - 4 - ol - 1 - one is obtained by a process comprising the above steps and is purified by conversion to the semicarbazone followed by hydrolysis.
Patent GB-154306-A (GB)
Title: Improvements in self-closing taps
IPC: F16K47/02
Filed: 1919-08-21
Abstract: 154,306. Jarvis, H. Aug. 21, 1919. Actuating-mechanism; lift valves.-A stop valve of the kind having a lift valve member provided with a grooved spindle terminating in a cylindrical part adapted to pass into a cylindrical seat prior to the seating of the main valve member is fitted with an actuating lever working in a guide. The lever 16 is pivoted to a member 18 secured to the casing and provided with a gripping-handle 21 and with a slotted guide 19 for the lever. The top of the guide is closed by a pin adapted to engage one or other of the steps on a stop 24 slidably mounted on the lever. A fixed stop 22 is formed on the lever 16 to prevent the lever from being sprung, and a pivoted catch may be fitted to the guide for holding the valve open. The valve member is loaded by a spring 11 bearing against a washer 50 in a cap 51 and is secured to the valve spindle by a screw 90. The valve spindle, which has a cylindrical part 3 and a triangular part 12, passes through a stuffing-box 8 into engagement with the actuating-lever.
Patent GB-601037-A (GB)
Title: Improvements in pipe, cigar, cigarette and similar lighters
IPC: F23Q2/08
Filed: 1945-08-10
Abstract: 601,037. Frictional igniters. CHEVALIER, J. A. A. Aug. 10, 1945, No. 20624. Convention date, April 10. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 13, 1945.] [Class 75(iii)] A lighter is provided within its body with a device for raising a fuel impregnated wick consisting of a member having one or more points movable into engagement with the wick and displaceable parallel to the axis of the wick tube. The device may be a pushbutton 32, Fig. 3, whose point engages the wick through a hole in a sleeve 29 surrounding the wick tube 8 to avoid fuel evaporation. The push-button may be urged into inoperative position by a coilspring 33 or by leaf springs, and a collar 32a may be provided normally abutting against the inside of the lighter body. A push button 40, Fig. 5, may be mounted on a leaf spring 37 held at both ends by rings 38 and provided with lugs 37a which prevent it escaping, pressure on the button 40 causing deformation of the spring to allow the point 39 to engage the wick. According to the Specification as open to inspection under Sect. 91 the device, Fig. 1 (Cancelled) comprises a star 17 mounted or cut on a spindle provided with a collar, which may be diametrically cut for engagement by a coin for rotating the spindle to raise or lower the wick. The wick tube 8 is slotted so that the wick 7 may be engaged by the star 17 which may be contained in a space 12 on top of fuel reservoir and separated from a compartment 12a for spare flints by a partition 25 welded by its edges. In Fig. 8 (Cancelled) the device comprises a hook 41 offset on a spindle 42 operable by a wing nut. This subject-matter does not appear in the Specification as accepted.
Patent GB-1224894-A (GB)
Title: International combustion engine
Inventor: GRATWICKE EDGAR HAROLD
IPC: F01B9/06
Filed: 1968-05-01
Abstract: 1,224,894. 894. Two-stroke engines; driving gear. E. H. GRATWICKE. May 1, 1968, No.20713/68. Heading F1B. An engine comprises one or more pairs of opposed two-diameter cylinders 1 and 2, each cylinder having a corresponding two-diameter piston 3 or 4, ports 16 and 17 in the larger diameter portions 1b, 2b of the cylinder pair crossconnected to ports 13, 12 of the smaller diameter cylinder portions 2a, 1a, and inlet ports 20, 21 and exhaust ports 18, 19 in the larger and smaller diameter cylinder portions, respectively. The pistons 3 and 4 are maintained equidistant by a link or links 5 and are provided with rollers 8 engaging a cam 9. The cylinders 1 and 2 have their axes 27 and 28 offset to either side of the shaft axis 29. A plurality of adjacent pairs of cylinders may have their pistons coacting with a plurality of cams on a shaft. A plurality of pairs of cylinders may be arranged radially. The devices 24 and 25 may be spark plugs or fuel injectors. Combustion may occur in the larger diameter cylinder portions to be completed in the smaller diameter portions.
Patent GB-239356-A (GB)
Title: Apparatus for playing a parlour game simulating water-polo
IPC: A63F7/06
Filed: 1924-09-03
Abstract: 239,356. Newall, J. P. Sept. 3, 1924. Parlour games.-An apparatus for use in playing a parlour game simulating water polo comprises a small vessel of glass, earthenware, or other suitable material, provided with goals A, and with rubber bulbs D communicating by means of tubes C, with the interior of the vessel. Rubber tubes B are used to make water-tight joints between the vessel and the bulbs and to allow freedom of movement to the tubes C. Sufficient water is placed in the vessel to cover the bottom of the goals, and the players by operating the bulbs endeavour to propel a floating ball into the goals. Legs M may be provided on the vessel. The top of the vessel may be provided with a filling hole E which may be closed by a plug or by a rubber cover; or the top may be in the form of a lid with a water-tight joint, or may be open.
Patent GB-288877-A (GB)
Title: Improvements relating to holding devices for the supply cable of electric railways
IPC: B60M1/24
Filed: 1927-08-06
Abstract: 288,877. Berg, F. Aug. 6, 1927. Clips and holders for cables.- Relates to a device for supporting both the trolly cable of an electric railway or tramway and an auxiliary cable which is used in conjunction with the main cable at curves on the track. According to the invention, the auxiliary cable b is held between a jaw e, formed on the holder A, and a movable jaw e<1>, while the main cabler a is laid between flanges f, on a sleeve it secured to the stem m of the holder A. A finger i, secured to the movable jaw e<1>, enters a slot formed on the lower flange g and prevents the cable a from moving out of the sleeve.
Patent GB-1057958-A (GB)
Title: Improvements in braces for fuel element clusters
Inventor: THOMAS PAUL
IPC: G21C3/32
Filed: 1964-05-20
Abstract: 1,057,958. Fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 20, 1964 [May 22, 1963], No. 20773/64. Heading G6C. A cluster-type fuel element comprises a plurality of rings of fuel pencils disposed around a central fuel pencil or tie-rod, the fuel pencils being spaced apart relatively to each other by means of at least one system of spacer members in which each spacer member surrounds and is secured to a fuel pencil, the spacer members surrounding the fuel pencils in the rings contacting adjacent spacer members in both the same ring and the adjacent ring or rings and the spacer member surrounding the central fuel pencil or tie-rod contacting adjacent spacer members in the adjacent ring, all the spacer members of the outer ring being welded to each other so as to form a unitary outer ring, there being no welded connection between the spacer members of any one ring and those of any other ring. In one embodiment (Fig. 4, not shown) the spacer member 26 which surrounds the central fuel pencil or tie-rod has three identical fins 27 equi-spaced around a cylindrical collar; the spacer members 28 of an intermediate ring of fuel pencils are symmetrical in pairs and each has three equispaced fins 29, 30 and 31, the fins 29 being applied both against a fin 29 of an adjacent spacer member of the same ring and against a fin 27 of the central spacer member 26, the fin 30 against two fins of two adjacent spacer members of the peripheral ring of fuel pencils and the fin 31 against a fin 31 of the other adjacent spacer member of the same ring; and the spacer members 32 of the peripheral ring are also symmetrical in pairs but each has only two fins 34 and 35, the fin 34 being applied against a fin 34 of an adjacent spacer member of the same ring and the fin 35 against a fin 35 of the other adjacent member of the same ring. and against a fin 30 of an adjacent spacer member 28 of the intermediate ring. The fins of adjacent spacer members in the rings are welded to each other at the points such as 37, 38, 39 and 40. The spacer members are formed of stainless steel, Ni-Cr alloy or a Zr alloy, depending on whether the reactor coolant is carbon dioxide or steam, and are brazed on to the cans of the respective fuel pencils.
Patent GB-427709-A (GB)
Title: Improvements in or relating to thermionic valve circuit arrangements
IPC: H04B1/16
Filed: 1933-07-24
Abstract: 427,709. Valve circuits for wireless reception. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. July 24, 1933, Nos. 20864 and 20865. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 24, 1934]. [Classes 39 (i) and 40 (v)] In a multi-grid valve additional grids, screened from the control grid are used for introducing reaction, producing negative resistance or the generation of oscillations. Fig. 1 shows the use of the third grid for obtaining reaction, in which this grid operates in opposite phase with the anode and assists in reducing the reaction of the anode on the control grid. The screen grid may be omitted if the oscillatory voltage on the grid adjacent to the anode is arranged to compensate completely for the anode reaction. Complete neutralization can be obtained by the provision of an external supplementary capacity between the first and second grids. Fig. 3 shows an arrangement for a combined detector-oscillator in a superheterodyne receiver. In a modification, Fig. 2, (not shown), a similar resistance back-coupling is used between the third and fourth grids of the valve used as a high-frequency amplifier to reduce the damping of the intervalve coupling. The output is taken from the third grid, the normal anode serving as an auxiliary electrode. The high-frequency amplifier, Fig. 5, (not shown), may be aperiodically coupled by the use of a low resistance and the back coupling arranged to produce a negative resistance of the same order as the coupling resistance. Fig. 4 shows an arrangement with the first and third grids used as a high-frequency amplifier and with the fourth and fifth electrodes used for anode rectification. To enable the valve to handle large outputs the third grid may be " blackened " or formed of elements on edge, or with heat conducting surfaces. To obtain sensitive control by the fourth grid the third grid is arranged to intercept as few electrons as possible as by making it of large mesh.
Patent GB-754605-A (GB)
Title: Improvements in or relating to circuit arrangements comprising cathode-ray tubes
IPC: H01J29/58
Filed: 1954-07-16
Abstract: 754,605. Cathode-ray tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 16, 1954 [July 18, 1953], No. 20864/54. Class 39 (1). In a cathode-ray tube with a preliminary electrostatic focusing system followed by a main electrostatic or magnetic focusing system, the first system comprises the cathode 3, the control electrode 4, the anode 6 and an additional electrode 5 surrounding the space between the control electrode and the anode. The distance 11 between the control electrode and the anode equals 1.5 times the diameter 12 of the anode aperture and a biasing potential is applied to the electrode 5 at least equal to the biasing potential of the control electrode which suffices for complete suppression of the electron current and at the most equal to twice the numerical value of this potential and having opposite sign. The actual potential on the electrode 5 is preferably not higher than the actual bias of the control electrode. The aperture of the electrode 5 adjacent the control electrode is preferably five to thirty times larger than the aperture in the control electrode. It is stated that a necessary condition is that the positive potential gradient at the cathode is determined for more than 50 per cent by the anode.
Patent GB-1435966-A (GB)
Title: Process for producing hydrophilic polymers containing -cn groups
IPC: C08F2/04
Filed: 1973-05-02
Abstract: 1435966 Cross-linked copolymers CESKOSLOVENSKA AKADEMIE VED 2 May 1973 1973 [2 May 1972] 20888/73 Heading C3P [Also in Division Bl] A hydrophilic cross-linked polymer which contains reactive -CN groups is produced by copolymerizing a monomer mixture containing 0À1 to 30 mol per cent of a cross-linking agent based on the total amount of the monomer mixture, a major part of which monomer mixture consists of a polyhydric alcohol ester of acrylic or methacrylic acid and acrylonitrile or methacrylonitrile, in the presence of 0 to 50% by weight of a polar solvent based on the total amount of monomer mixture and solvent. Exemplified cross-linking agents are divinyl benzene, dimethacrylates of ethylene, diethylene and triethylene glycols and diacrylates of ethylene and diethylene glycols. The polyhydric alcohol ester may be a monoacrylate or methacrylate of ethylene, diethylene or triethylene glycol and the polymerization may be carried out in the presence of various azo and peroxy initiators, optionally supplemented by u.v. radiation or ammonium persulphate. The polymer gels may be used for contact lenses, biological implants, dialysis membranes or for sorbtion of heavy metals.
Patent GB-224945-A (GB)
Title: Improvements relating to steam actuated ejectors in combination with feed water heaters
IPC: F22D1/32
Filed: 1923-08-17
Abstract: 224,945. Guy, H. L., and Metropolitan- Vickers Electrical Co., Ltd. Aug. 17, 1923. Ejectors: multi-stage combinations; cooling mixed fluids in diffusers.-In apparatus for use in conjunction with steam condensers and comprising a steam-actuated ejector and a tubular feed-water heater serving to condense the ejector discharge, the feed-water heater is provided with inlet and outlet, compartments for the water at one end only, and the diffuser of the ejector projects axially and centrally into the tube nest of the heater. The apparatus may comprise ejectors and heaters in stages or series. In the arrangement shown, ejectors 19, 20 have their diffusers 21 built into the tube nests 16 of feedwater heaters 1, 2, which comprise vertical casings 3 fitted with Field tubes 14, 15 and transverse baffles 18. Tubular extensions 22 are fitted to the diffusers to direct the discharged steam and air to the bottom of the tube nests. The feedwater enters the first heater through the port 4 and rises through the inner tubes 14 and descends through the outer tubes 15 to a collector 10 from which it flows through a port 5 to the inlet port 4 of the next stage of the heater. The incondensible gases pass from the first casing through a passage 8 to the induction port 23 of the second ejector, the gases from the second casing being discharged to the atmosphere through a port hot shown. The heated water leaves the heater 2 through the port 5. According to the Provisional Specification., the diffusers may have straight sides in place of the usual curved sides.
Patent GB-408126-A (GB)
Title: Vehicle wheels
IPC: B60B23/10
Filed: 1933-07-25
Abstract: 408,126. Vehicle wheels. KELLER, C. G., Violet Avenue Road, Hyde Park, New York, U.S.A. July 25, 1933, No. 20964. Convention date, July 28, 1932. [Class 144 (ii).] The detachable rim 14 is secured on coned seatings 13 on the outer ends of the spokes 11 by clamps 20 and bolts 27 engaging nuts 17 permanently carried by the spokes. To provide a long threaded engagement, the nuts have extensions 15 passing loosely through, and riveted over, the spokes. The latter may be provided with lugs to prevent rotation of the nuts. The clamps 20 may be provided with lugs 29 pressed into the grooved necks of the bolts, and with bosses 21, 22 and 23 to engage seatings on the rim and spokes respectively. To prevent creeping of the rim, one or more of the spokes may be provided with a projection 30 to co-operate with a stop on the rim.
Patent GB-149278-A (GB)
Title: Device for the production of oak-imitation
IPC: B27M1/00
Filed: 1920-07-14
Abstract: 149,278. Schenk, G. March 15,1919, [Convention date]. Ornamenting.-Consists in producing oak graining on soft wood by first coating the surface with paint and putty and then forming impressions of the oak pores by means of a roller formed of a number of toothed disks b, c, and spacing-disks d, mounted on a shaft a.
Patent GB-789690-A (GB)
Title: Improvements in or relating to a composition for temporarily sterilizing soil
IPC: C07C333/16
Filed: 1955-07-22
Abstract: A composition for temporarily sterilizing soil comprises a solution containing from about 20 to about 40 per cent by weight of sodium-N-methyl dithiocarbamate, from about 0.1 to 1 per cent by weight of an amine and the balance water.  Preferred amines are aliphatic primary amines having from 1 to 6 carbon atoms such as methyl, ethyl, propyl, butyl, amyl and hexyl amines, aliphatic secondary amines having from 1 to 4 carbon atoms in each aliphatic group such as dimethyl, diethyl, diisopropyl, dibutyl amines, diamines having the formula NH2(CH2)nNH2, where n is 2 to 6, and aromatic amines having at least a slight water solubility such as aniline and the aminophenols.  Other amino compounds such as mono- and di-ethanol amines, 2-methyl aminopropanol and salts of amino acids having free primary or secondary amino groups can also be used.
Patent GB-1475546-A (GB)
Title: Mastic
IPC: C08L33/00
Filed: 1974-05-14
Abstract: 1475546 Mastic compositions containing hollow microspheres CHAMPION PAPER CO Ltd 14 May 1974 [17 May 1973] 21362/74 Heading C3P and C3C Mastic compositions useful as adhesives, sealants or caulks contain hollow, resilient, expanded, thermoplastic resinous microspheres and have a Brookfield viscosity of at least 50,000 cps. at ambient temperature. The compositions are prepared by heating an aqueous slurry containing 10-20% by weight of thermoplastic resinous microspheres of diameter 6 to 8 Á and containing an expanding agent in the liquid state to a temperature of from 80‹ to 140‹ C. for 0À5 to 5 seconds to expand the microspheres, and admixing the heated slurry with a cooler mastic composition. Preferred microspheres comprise a shell of vinylidene chloride/ acrylonitrile copolymer enclosing liquefied isobutane blowing agent. Exemplified compositions are based on an acrylic latex binder, in some cases together with a polyvinyl acetate latex binder, and additionally include other components selected from asbestos filler, polyacrylic acid thickener, calcium carbonate filler, barium sulphate filler, organic solvents, watersoftening agent, water, ammonia pH adjuster, phenyl mercuric oleate biocide, titanium dioxide pigment, wetting agent, tricresyl phosphate plasticizer, surfactant, and urea. An aq. slurry of the expandable microspheres from tank 1 (Fig. 3) may be fed by pump 2 into a heating zone 3 supplied with steam from 4 and the heated slurry is expanded in 5 and then cooled in 6 with an aqueous mastic latex from 7 to form the above mastic composition.
Patent GB-1423110-A (GB)
Title: Method and an arrangement for continuous production of milk with a predetermined fat percentage
Inventor: MALMBERG R
IPC: A01J11/10
Filed: 1974-05-14
Abstract: 1423110 Standardised milk ALFA-LAVAL AB 14 May 1974 [29 May 1973] 21370/74 Heading A2B [Also in Divisions G1 and G3] Standardised milk of predetermined fat content is made by (a) separating milk in a centrifugal separator 2 into a cream flow 3 and a skim milk flow 4, (b) maintaining the cream density constant by controlling the flow of either the cream or the skim milk by a density meter 5 and a control valve 6, and (c) remixing a portion of the cream flow with the skim milk flow at 14 whilst (d) controlling the flow ratio of the skim milk and cream being remixed by means of flow meters 15, 16, a ratio controller 19 and a valve 20. Excess cream flows through the valve 20. If the standardised milk has a higher fat content than the initial milk, the whole of the cream flow is remixed with part of the skim milk flow. The pressure at the skim milk exit of the separator may be kept constant by pressure transducer 9 and valve 11.
Patent GB-455665-A (GB)
Title: Improvements in thermionic amplifiers
IPC: H03G3/22
Filed: 1935-07-27
Abstract: 455,665. Valve circuits for wireless reception. STANDARD TELEPHONES & CABLES, Ltd., Aldwych, London.-(Assignees of Standard Villamossagi Reszvenytarsasag ; Ujpest, near Budapest) July 27, 1935, No. 21376. Convention date, Sept. 3, 1934. [Class 40 (v)] A screen - grid tetrode valve the control grid bias of which is varied for A.V.C. is supplied with a screen-grid voltage exceeding eleventwentieths of the working anode potential, in order to produce a delay in the effect of the volume control potentials by flattening the upper part of the grid-voltage anode-current curve. In the circuit described the screengrid 17 of the controlled amplifier 1 is connected directly to the positive terminal of the anode supply source A. The steady control grid bias is produced in part by the cathode resistance 3 and in part by an opposing bias produced by the resistance 8 carrying current from the H.T. source, and fed through the load resistance 9 of the A.V.C. diode 6. An additional delay in the A.V.C. is produced by the change in steady bias due to the resistance 3 with changes of anode current in the controlled valve.