baber/WOPTO huggingface dataset:
Patent GB-335929-A (GB)
Title: Improvements in the extraction of valuable products from montan wax by means of solvents
IPC: C10G73/00
Filed: 1929-07-01
Abstract: 335,929. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). July 1, 1929. Mineral waxes, purifying. - Montan wax is purified by extraction under pressure and at elevated temperature with organic solvents of the wax acids and esters but not of the colouring matters. Suitable, solvents are aliphatic alcohols, esters, ketones, and ethers, e.g. methyl, ethyl, and propyl alcohols, their acetic esters, acetone, and diethyl ether, open chain or cyclo-aliphatic liquid hydrocarbons, e.g. benzine boiling mainly up to about 100‹ C., and hexahydrobenzene, and chlorinated hydrocarbons, alone or mixed or mixed with a smaller quantity of aromatic hydrocarbons. In examples, (1) 10 lb. of crude wax is treated in an autoclave at 150‹ C. and 12 atmospheres with successive. 50 lb. portions of a 1-4 mixture of benzene and ethyl alcohol. The entire extract is cooled, and the precipitated wax separated from the solution of resin. 5 lb. of pale brown wax result. (2) Melted deresinified wax is passed continuously down a jacketed tower packed with sieves, Raschig rings, or the like. against a stream of methanol at 135‹ C. and 9 atmospheres pressure. The extract is freed from solvent by removing the pressure and by distillation. The yield is 40 per cent.
Patent GB-720099-A (GB)
Title: Improvements relating to instruments for the measurement of air pressure
Inventor: STARMER LESLIE BYROM
IPC: G01L7/00
Filed: 1951-08-27
Abstract: 720,099. Flow meters. METROPOLITANVICKERS ELECTRICAL CO., Ltd. July 10, 1952 [Aug. 2.7, 1951], No. 20163/51. Class 69 (1). An instrument for measuring the pressure difference between two regions comprises a chamber 5 having an inlet 6 and outlet. 7 through which a stream of air may flow, a pivoted vane 10 extending across the chamber 5 and movable therein by air flow through the chamber 5 against a restoring force, an edge of the vane 10 or a pointer connected thereto being arranged to move relatively to a calibrated scale 3, and valve means 14 operable so to close the inlet or outlet, except when a reading is required, as to prevent air flow through the chamber and between the regions. The chamber 5 is formed in a housing 1 with a cover 2 carrying the scale 3 on or behind a glass window 4. The vane comprises a flat plate of light material such as aluminium and is counterbalanced and acts against a hair spring 12 with a screw 13 for zero adjustment. The valve 14 comprises a flat plate 15 extending across the outer end of the inlet passage 6 and pivoted about a pin 15<SP>1</SP> being normally urged by a spring 16 to cut off the inlet passage 6 from an inlet tube 8. When a reading is required the plate 15 is swung, facilitated by a lip 17, to bring an opening 18 into line with the inlet tube 8 and inlet passage 6 so that air may flow through the apparatus. When the valve 14 is open a peripheral flange 20 round the opening 18 bridges a gap between the valve plate 15 and a cover plate attached to the inlet tube 8. When the valve 14 is closed a small gap between the valve plate 15 and cover plate allows air under pressure in the tube 8 to escape to prevent the build-up of dust which might otherwise surge into the apparatus when the valve is opened. The apparatus may be applied to an air duct system to indicate when a filter requires cleaning or replacing.
Patent GB-583330-A (GB)
Title: Improvements relating to taps for beer or other casks
IPC: B67D3/04
Filed: 1944-10-18
Abstract: 583,330. Taps for casks. GASKELL & CHAMBERS, Ltd., and WEIGHTMAN, J. S. Oct. 18, 1944, No. 20167. [Class 21] [Also in Group XXIX] A tap for beer and other casks of the kind adapted to be driven into the bunghole by a hammer-blow has a rotary valve plug o, Fig. 1, and seating k arranged out of alignment with the longitudinal axis of a hollow shank a which transmits the hammer-blow to avoid distortion of the valve surfaces. A spring u retains the valve plug o in place and an annular rib v<1> on the actuating stem f facilitates the formation of a tight joint. In an alternative form of tap shown in Fig. 3 the valve o is a disk, and the spring u a leaf spring. In a further form shown in Fig. 6 the valve o is segmental and a leaf spring u presses with its ends on the ends of the segment while its centre is pressed by a sleeve v rotated from the handle g.
Patent GB-833800-A (GB)
Title: Asbestos based silicone reinforced structures
IPC: C04B41/49
Filed: 1957-06-26
Abstract: 833,800. Resin-impregnated asbestos sheets; laminates. MIDLAND SILICONES Ltd June 26, 1957 [Sept. 5, 1956], No. 20204/57. Class 140. [Also in Group XXVIII] A reinforced organosiloxane sheet structure contains one or more reinforcing sheets, at least 50% of which are asbestos felts containing at least 99% by weight of mechanically-opened chrysotile fibres of " Canadian No. 1 crude " grade having a staple length of at least ¥ inch and a total iron content of less than 2% by weight, any other reinforcing sheets present being composed of woven glass cloth substantially free from organic matter, e.g. " heatcleaned " glass cloth, all the reinforcing sheets in said structure being impregnated and bonded together with an organosiloxane copolymeric resin consisting essentially of 4.5 to 17 mol. per cent diphenylsiloxane units, 22 to 55 mol. per cent monophenylsiloxane units and 40 to 65 mol. per cent of monomethylsiloxane units. The reinforcement may comprise a single sheet of the asbestos felt, a plurality of sheets all of the asbestos felt, alternate sheets of the asbestos felt and the glass cloth or an arrangement in which all the sheets on one side are of the asbestos felt and all the sheets on the other are of the glass cloth. The laminate may be made by (1) impregnating the asbestos felt, which may be supported on a glass carrier cloth, with an organic solvent solution of the resin of a concentration sufficient to deposit on said felt from 40 to 65% by weight of resin solids (dry felt = 100%), said solution containing also from 0.05 to 0.5% by weight of a quaternary ammonium salt curing catalyst for the resin (resin solids = 100%); (2) precuring the impregnated felt to an extent that it is tack-free at room temperature but thermoplastic at 150‹ to 200‹ C.; (3) assembling multiple plies of the felt so impregnated and pre-cured; (4) subjecting the assembly to heat and pressure ; and (5) after-curing the laminate at gradually increasing temperatures. The structures may be prepared in simple, irregular or tubular forms and may be used as, e.g. air ducts, instrument panel boards, insulators, airfoil sections and skins of sandwich constructions having foamed resin cores. Laminates in which all the reinforcing sheets are of heat-cleaned glass cloth are described for purposes of comparison. Specification 762,978 is referred to.
Patent GB-1185622-A (GB)
Title: Fluid Circulated Suit Construction
Inventor: BETTS JOHN CROWTHER
IPC: B64D10/00
Filed: 1966-03-28
Abstract: 1,185,622. Heating and cooling garments; boots &c. J. C. BETTS. 28 June, 1967 [28 March, 1966; 28 April, 1966; 6 May, 1966], Nos. 13649/66, 18626/66 and 20206/66. Headings A3B and A3V. A garment for heating or cooling the body e.g. a suit or undersuit for use by divers, aircrew and the like, is made from at least two panels, each panel consisting of two layers joined along at least part of their periphery and at predetermined surface regions to form cavities, and includes means for interconnecting the cavities and inlet and outlet means for circulating heated or cooled fluid e.g. water, through the cavities. As described a one piece suit is made up of front, rear, leg and arm panels, each panel consisting of two layers 1, 2 of textile fabric, rubber, plastics or foam materials or combinations thereof, preferably nylon lined foam neoprene. The layers 1, 2 are joined around their edges by a seam 3 except at the points where they are connected to adjacent panels by tubular inserts 8. The layers 1, 2 are also joined along seams 3<1> to form cavities or channels 4 through which the fluid flows as shown by the arrows in Fig. 1. The layers of the leg panels are joined at points 5 to give a quilted effect and to prevent undue distention of the cavities. The seams 3, 3<1> and joints 5 may be produced by clips, staples, stitching, adhesive bonding, welding or vulcanizing. The suit is provided with an inlet 14, an outlet 15, a relief valve 18 which can also be used to drain the suit and a valve 19 to vent air from the suit. The invention can also be applied to the manufacture of other heated garments e.g. suits made in separate sections, bootees, gloves and head coverings.
Patent GB-597006-A (GB)
Title: New and improved extrusion apparatus
IPC: B29C48/05
Filed: 1945-08-08
Abstract: An extrusion die or spinneret is made entirely of, or has a surface consisting of, or a surface coated with, a tetrafluoroethylene polymer, the said surface being that contacted by the material to be extruded or spun, and the said <PICT:0597006/IV/1> <PICT:0597006/IV/2> surface being the external surface for delivering the extruded or spun material.  Fig. 1 shows attached to a conventional extrusion apparatus 1 a die 4 in which certain surfaces are coated by the tetrafluoroethylene polymer 5.  The chamber 6 can be used for a heating liquid, but can in fact be used for a cooling liquid, since the plastic 3 being extruded can be set and hardened without difficulty within the die.  In a case such as is shown in this diagram, the die is most conveniently coated by being dipped in the molten tetrafluoroethylene polymer.  Fig. 4 shows a spinneret 16 made entirely from a solid block of the polymer machined to fit the delivery end 10 of a conventional spinning apparatus.  The spinneret alternatively may be made of metal with a coating on the delivery side: this coating will stop effectively the accumulation of extrusion plastic on the external surface and eliminate the frequent interruptions due to this cause encountered in melt-spinning. Alternatively, a thin film of polymerized tetrafluoroethylene can be given to the spinneret by rubbing it with a piece of the polymer. Copolymers, for example, those obtained by polymerizing tetrafluoroethylene with small amounts of other unsaturated compounds such as ethylene, may be used for the construction of the die.  The material to be extruded may be polyethylene, nylon (melt-spinning) cellulose acetate (dry-spinning) or viscose (wet-spinning).  The polymerized tetrafluoroethylene may be modified by addition of fillers such as carbon, silica, fluorspar, mica, fuller's earth, glass, asbestos, metal flakes, &c.  Resistance heating wires may be embedded in it if required.  It may be a comparatively low molecular weight, hard, waxy, high-melting material up to a high molecular weight film-forming polymer.  In an example, polyethylene is extruded through a die lined with tetrafluroethylene polymer.  No adhesion of the polyethylene to the die is noticed and the extruded material is characterised by an exceptionally smooth surface.
Patent GB-1071228-A (GB)
Title: Improvements in hair switches
Inventor: DURLACHER ROBERT BENEDICT
IPC: A41G5/00
Filed: 1966-05-09
Abstract: 1,071,228. Hair switches. HAUER & CO. Ltd. May 9, 1966, No. 20380/66. Heading A4V. A hair switch comprises hair secured to a tape having attached to at least the central part of its free face a strip of the hook type portion of a "touch and close" fastener so that the hooks of the strip grip the existing hair and prevent displacement of the switch. The "touch and close" fastener is a fastener comprising two strips one bearing a number of tiny hooks (the hook type portion )and the other having a number of tiny loops. Preferably the tape is open ended and a hook type and loop type portion of "touch and close" fastener is attached respectively to each end so that the ends may be adjustably connected to form a loop to pass over the head, by pressing the corresponding faces together. The natural or synthetic hair is secured to the tape, for example, by securing it between two tapes which are stitched together.
Patent GB-183359-A (GB)
Title: Improvements relating to bakery ovens
IPC: A21B1/14
Filed: 1921-07-29
Abstract: 183,359. Beanes, W. H. July 29, 1921. Liquid and gaseous fuel furnaces.-In a Perkins tube bakers' oven of the kind having arranged on opposite sides of the oven door d a pair of combustion chambers c into which extend the lower ends of the inclined tubes b, means are provided for firing with solid, liquid or gaseous fuel. The oven shown in Fig. 5 is fired by gas supplied to burner-pipes i from a main h, the former being replaced by injector or other burners when liquid fuel is used. For firing with solid fuel, the pipes i are removed and the furnaces fitted with ordinary firegrates as shown at c<1>, Fig. 5. Fig. 6 shows an oven fired by gas generated in a producer f provided at the rear of the oven beneath the sole-plate a, the gas being conveyed to the combustion chambers c through a flue g. A producer for each combustion chamber may be provided or one producer may supply both chambers, the pipe h and tubes i being utilized for the supply of air for combustion.
Patent GB-141267-A (GB)
Title: Improvements in or relating to gramophone sound boxes
IPC: H04R7/00
Filed: 1919-08-20
Abstract: 141,267. Lightfoot, H. Aug. 20, 1919. Sound - boxes. - A resonator plate centrally supported by means of a tube 5 is interposed between the diaphragm 1 and the back plate of the sound-box 2. The rim of the plate is free to vibrate and may be serrated. The plate may be of metal, wood, ivory, &c., and its surface may be flat, convex, concave, or corrugated.
Patent GB-148577-A (GB)
Title: Improvements in and relating to gas operated flashlight apparatus
IPC: F21V9/00
Filed: 1920-07-10
Abstract: 148,577. Pintsch Akt.-Ges., J. Feb. 4, 1915, [Convention date]. Valves. actuated automatically and intermittently. - A valve device for automatically and intermittingly opening a gas valve supplying a burner is provided with an external adjustment whereby the duration of the light period may be varied. The spring-loaded diaphragm 4 acts through a spring tumbler 7 to rock a lever 6. The lever carries the main valve 3 for controlling the primary inlet passage which is regulated by a valve 2, an outlet valve 9 and a second inlet valve 10 controlling a secondary supply passage 12. This passage is regulated by a valve 20 to vary the light period.
Patent GB-997871-A (GB)
Title: Improvements in or relating to the coating of low-voltage discharge lamps with luminescent substances
IPC: C09K11/02
Filed: 1961-06-07
Abstract: A process for coating low-voltage discharge lamp tubes with luminescent substances suspended in an aqueous liquid which contains binders preferably in solution comprises internally wetting the tubes with water without binder and not followed by drying before the suspension is introduced into the tubes.  The binders can be one or more water-soluble synthetic resins such as polymerisation products of ethylene oxide.  The tubes can be cleansed before or during the wetting steps, and the cleansing can be effected in water with a cleansing agent, such as hydrofluoric acid or chromosulphuric acid, followed by rinsing in distilled water.  The tubes may then be dried and then wetted and coated. The tubes can be cleansed, wetted and coated in a single automatic machine having a number of working stations through which the tubes pass in turn, the tubes being finally dried.
Patent GB-136607-A (GB)
Title: An Improved Valve for Locomotive Engine Cylinders.
Inventor: FONSECA HENRY
IPC: F01B25/00
Filed: 1918-12-12
Abstract: 136,607. Fonseca, H. Dec. 12, 1918. Cylinders, draining.-In a valve capable of acting as an air valve, a safety-valve, and a drainage or blow-off valve, of the kind having two valve seatings c, d, and in which the underside of the valve member b is connected with the steam-chest while the upper side is connected with a cylinder end, the valve being normally closed when the regulator is open, the two valve-seatings c, d are separated by an annular space permanently open to the atmosphere. In a modification, the valves at each end of a cylinder are connected so that the equalizing-valves ordinarily used are unnecessary.
Patent GB-1217181-A (GB)
Title: PROCESS OF SOLUBILISING 3alpha-HYDROXY-PREGNANE-11,20-DIONE
IPC: A61K47/26
Filed: 1968-05-02
Abstract: 1,217,181. 3α - Hydroxy - pregnane compounds. SOC. D'ETUDES SCIENTIFIQUES ET INDUSTRIELLES DELILE - DEFRANCE. 2 May, 1968 [3 May, 1967], No. 20834/68. Heading C2U. [Also in Division A5] 3α - Hydroxy - pregnane - 11,20 - dione is prepared by reacting 3-α-hydroxy-21-acetoxy- 11,20 - dioxo - 12α - bromo - #<SP>16</SP> - pregnene with zinc powder in aqueous acetic acid to form 3α- hydroxy - 11,20 - dioxo - #<SP>16</SP> - pregnene which is then hydrogenated. The 3α-hydroxy-pregnane- 11,20-dione is solubilized in water by the addition thereto of a colloidal, non-ionic surfaceactive agent and/or a solvent selected from the isopropyl ethers of triethylene and propylene glycols, glycofurol and N,N-dimethylnicotinamide.
Patent GB-1337076-A (GB)
Title: Differential refractometer
IPC: G01N21/41
Filed: 1971-04-19
Abstract: 1337076 Refractometer WATERS ASSOCIATES Inc 19 April 1971 [2 Feb 1970] 20840/71 Heading G1A [Also in Division G2] A differential refractometer has light source 12 Fig. 5,cell for liquid sample 92 and light-sensitive means 34 disposed within a recess in a metal block, the sample cell input tube 94 having sections 94a, 94b, 94c passing through the block, the sections being thermally isolated by the block to heat flow through the block. The cell 92 may be a hollow triangular prism for reference liquid surrounded by a rectangular hollow prism for liquid under test. The liquid under test flows out through pipe 96. Heat exchanger tube 110 may be provided to heat or cool the block. The detector 34 may have a detecting head as in Fig.2, with two light-sensitive areas 42, 44, e.g. of cadmium sulphide, and metallic-coated areas 47 having electrodes 48a, 48b, 48c. These electrodes are used to connect the light-sensitive areas into a bridge circuit Fig.3, (not shown) which is in balance when the areas 42, 44 are equally illuminated, and is arranged to give an indication when not in balance to show the deflection of the light beam. Element 32 Fig.5 is provided to enable the beam to be displaced, to zero the device via knob 100.
Patent GB-783500-A (GB)
Title: Improvements in or relating to underwater protective housings for photographic roll film cameras
IPC: G03B17/08
Filed: 1954-06-03
Abstract: 783,500. Photographic cameras. HEIDECKE, R., and FRANKE, H., [trading as FRANKE & HEIDECKE FABRIK, PHOTOGR, PRAZISIONS-APPARATE], June 3, 1954 [July 1, 1953], No. 20856/56. Class 98(1) In a watertight housing for a twin lens reflex camera, the shutter speed setting and diaphragm setting knobs on the camera are releasably connected to operating handles on the outside of the housing by means including internally toothed bevel gears which fit over the knobs and are carried on a plate detachably mounted on the viewfinder objective of the camera. Releasable connections for the focusing, film-wind and shutter release knobs and a filterselecting control also are described. As shown in Figs. 3 and 5, internally toothed bevel gears 34 (60) fit over the shutter speed setting and diaphragm setting knobs which are situated one on either side of the lens on the front plate of a reflex camera. The gears are carried by a plate 27 (59) which fits over the view-finder objective of the camera. In Fig. 3, the gears 34 are connected through bevel gears 40, 41 and universal joints 42 to cardan shafts 26 which are rotatable by knobs mounted on the top of the water-tight housing. In Fig. 5, the gears 60 are rotated by gearing connected to shafts 53 which pass horizontally through the rear of the watertight housing and carry the operating knobs. Two or more filters 51 (Fig. 3) are mounted on a plate 43 which also fits over the view-finder objective and has teeth 44 which engage teeth 45 of a sector mounted on shaft 46. The shaft 46 may be rotated by a lever on the outside of the housing in order to change the filters. The focusing and film-winding knobs 61 (Fig. 6) of the camera are provided with clamps 68 carrying cranks 66. The latter engage. flanged plates 64 mounted on shafts 63 and rotatable by operating handles 62 on the outside of the housing. The shutter release is shown in Fig. 7. The release lever 72 is mounted on a shaft 71 in the side of the housing 1, the other end of the shaft 71 carrying a lever 73 which is arranged to depress the release button 70 of the camera. Specifications 783,498, 783,501 and 783,502 are referred to.
Patent GB-423987-A (GB)
Title: Improvements in bogie mountings for vehicles
IPC: B62D7/02
Filed: 1934-07-18
Abstract: 423,987. Forecarriage turning-plates; roller bearings. SEDWELL, A. J., 677, Commercial Road, Limehouse, London. July 18, 1934, No. 21014. [Class 108 (ii)] [See also Group XXXIV] In a bogie or forecarriage turning-arrangement for vehicles of the kind in which rollers 12 are accommodated in pockets between the upper and lower wheel plates 8, 10, the locating device for the rollers comprises a separate ring 13 which is provided with integral webs or brackets 14, forming individual pockets for the rollers, and at its inner and/or outer periphery with portions adapted to extend below the top surface of lower plate 10 and thus engage the inner and /or outer edge of the same. In the construction shown in Figs. 2 and 3, the pockets are formed by means of U-shaped webs 14 and the ring 13 engages only the outer edge of the plate 10. Modifications are described in which the ring engages only the inner edge or both edges of the plate 10.
Patent GB-126916-A (GB)
Title: Improvements in Paper Making Machines.
Inventor: DIXON WILLIAM HYDE
IPC: D21F5/02
Filed: 1918-12-17
Abstract: 126,916. Dixon, W. H. Dec. 17, 1918. Drying.-In the arrangement of steam-heated drying-cylinders a shown, in which the web or sheet b is pressed against the drying-cylinders by felts c passing over jockey-rollers d, the steam is withdrawn from the pockets formed by the felts and paper web by perforated pipes, tubes, or chambers e connected with a fan or other suction device.
Patent GB-361430-A (GB)
Title: Improvements in and relating to street gulleys
IPC: E03F5/04
Filed: 1931-05-04
Abstract: 361,430. Sanitary traps. CROTHERS, G., 5, Mabel Street, Belfast. May 4, 1931, No. 21111/30. [Class 33.] A gulley has a tube 2 projecting through the seal-forming member and normally closed by a plug 1 connected by a chain to the grating member.
Patent GB-1533722-A (GB)
Title: Hydrocracking
IPC: C10G47/00
Filed: 1976-05-21
Abstract: 1533722 Hydrocracking oils INSTITUT FRANCAIS DU PETROLE and BADISCHE ANILINUND SODA-FABRIK AG 21 May 1976 [21 May 1975 30 Dec 1975] 21130/76 Heading C5E A petroleum hydrocarbon charge 101 containing nitrogenous compounds is hydrogenated in a first reaction zone 108 (using a hydrodesulphurization, hydrodenitrification or hydrocracking catalyst) and the effluent 109 is separated into a gaseous phase 115 and a liquid phase 116 containing less than 50 ppm of ammonia; the liquid phase 116 is subjected to hydrocracking in a second reaction zone 121 in admixture with at least a portion 138 of the effluent 142 from a prefractionating zone 124 and the effluent 122 from the second reaction zone is stripped in the prefractionation zone 124 in admixture with the gaseous phase 115 to produce a liquid fraction 136 (at least a portion 138 of which is recycled to the second reaction zone) and a gaseous fraction 125 which is cooled and separated into a hydrogen rich gas 133 and a liquid product 130.