baber/WOPTO huggingface dataset:
Patent GB-770005-A (GB)
Title: Process for the manufacture of chromane derivatives
Inventor: WEBSTER WILLIAM
IPC: C07D311/20
Filed: 1954-06-11
Abstract: 2,4,4 - trimethyl chroman - 2 - ol, 2,4,4 - trimethyl chromen and bis-2,4,4-trimethyl chroman - 2 - yl peroxide are obtained by a process comprising decomposing 1,1,3-trimethylindane-3-hydroperoxide by reacting the hydroperoxide with an acidic condensation catalyst known to effect the decomposition of hydroperoxides of aromatic compounds to produce phenols and ketones or aldehydes.  The decomposition may be carried out under anhydrous conditions, i.e. the reaction medium contains not more than 5 per cent by weight of water, and in this case suitable catalysts are concentrated mineral acids, such as sulphuric and phosphoric acid; organic acids such as p-toluene-sulphonic acid or chlorinated derivatives of acetic acid; Friedel-Crafts catalysts, such as the chlorides of aluminium, tin, iron, zinc and magnesium; acid treated earths such as fuller's earth, bentonite or diatomaceous earth; or silica gel or acid-treated hydrogen ion exchange materials.  If the reaction is carried out in an aqueous medium sulphuric acid in concentration from about 5 to 95 per cent by weight is a suitable catalyst.  The products of the reaction are 2,2,4 - trimethyl chroman - 2 - ol and 2,4,4-trimethylchroman and some bis - 2,4,4 - trimethyl - chroman 2 - yl peroxide may also be formed as a by-product.  A solvent, for example acetone, may be used for the hydroperoxide used in the reaction.  In the examples: (a) 1,1,3-trimethylindane - 3 - hydroperoxide is dissolved in acetone and treated with sulphuric acid dissolved in acetone to give a mixture of 2,4,4 - trimethylchroman - 2 - ol and 2,4,6 - trimethyl chroman; (b) trimethylindane hydroperoxide is treated with fuller's earth mixed with benzene to give 2,4,4-trimethyl chromen and the chromanol compound; (c) trimethyl indane hydroperoxide is dissolved in acetone and treated with concentrated sulphuric acid mixed with acetone to give 2,4,4-trimethyl chroman - 2 - ol, 2,4,4 - trimethyl chromen and bis 2,4,4 - trimethylchroman - 2 - yl peroxide of formula <FORM:0770005/IV(b)/1> (d) 2,4,4-trimethyl indane hydroperoxide is treated with commercial mixed alkanesulphonic acid to give 2,4,4 - trimethyl chroman - 2 - ol, 2,4,4 - trimethyl chromen and bis - 2,4,4 - trimethyl chroman-2-yl peroxide; and (c) 2,4,4-trimethyl indane hydroperoxide is treated with sulphuric acid mixed with water to give 2,4,4-trimethyl chromen.  Specification 770,006 is referred to.
Patent GB-356210-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03G3/22
Filed: 1930-06-04
Abstract: 356,210. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., Columbia House, Aldwych, London.-(Reeves, A. H. ; 46, Avenue de Breteuil, Paris.) June 4, 1930, No. 17225. [Class 40 (v).] The invention relates to the automatic control of the gain in a thermionic amplifier in accordance with the average peak values of the signals and consists in (1) means for integrating the peak values of the signal and (2) the gain controlling potentiometer formed by resistance elements shunted by controlled valves in the input to the amplifier. The Figure shows the ordinary monitoring rectifier 1 associated with the antenna of a wireless transmitter arranged to control the grid bias of an oscillator 2 so that oscillation is inhibited unless the peak value of the signal exceeds a predetermined valve. The output of the oscillator is rectified by valve 3 and controls the grid bias of valves 4, 5, through a direct coupling as described in Specification 344,936. A relay 16 is provided which is closed by the signals so that between signalling periods the bias of valves 4, 5 is unchanged as the resistance-condenser combination 19, 22 has a time constant of 15 minutes. The control varies the impedances of valves 4, 5 which are bridged across resistances in series with the input to the low frequency amplifying valve 6, which is arranged to amplify the incoming signal to the value required for transmission.
Patent GB-1216188-A (GB)
Title: Improvements relating to cigarette packages
Inventor: CONWAY DAVID EDWARD
IPC: B65D75/38
Filed: 1967-04-14
Abstract: 1,216,188. Cigarette package. BRITISHAMERICAN TOBACCO CO. Ltd. 11 July, 1968 [14 April, 1967], No. 17236/67. Heading B8C. A method of manufacturing a cigarette package of the type having an inner foil wrapper 1 completely enclosing its contents, and an outer wrapper 3 enclosing a substantial part of the foil-wrapped contents, comprises applying an inner wrapper blank and then an outer wrapper blank to a mandrel and causing the wrappers to be sealed together by adhesive while on the mandrel. The inner wrapper is of tissue-lined aluminium foil, and the outer wrapper is of paper. The adhesive is either thermoplastic, e.g. polyethylene, polyvinyl acetate, a polyethylene/ vinyl acetate copolumer or polyvinylidene chloride copolymer, or a self-sealing cold-acting adhesive based on rubber latex. The adhesive may be applied to either or both surfaces. The package is formed from blanks cut from continuous strips and applied to the mandrel of a package-forming machine of the type disclosed in U.K. Specification 919,705. Extra adhesive may be applied to the blanks at the package seams.
Patent GB-280137-A (GB)
Title: An improved tool for reducing diameter of ferrules when fixing adaptors and the like in rubber tubes
IPC: B25B1/24
Filed: 1927-06-30
Abstract: 280,137. Parkes, J. June 30, 1927. Jointing by stamping. - A hand-operated portable machine for contracting a metal ferrule on a motor-tyre pumptube has legs A hinged on a pivot E and terminating in jaws with semi-circular recesses D. Pressure is applied by a .hammer or a vice.
Patent GB-319387-A (GB)
Title: Improvements in rotary compressors, motors, pumps and the like
IPC: F01B5/00
Filed: 1928-06-15
Abstract: 319,387. Holman Bros., Ltd., Shaw, H. S. Hele-, Beacham, T. E., and Mills, E. C. June 15, 1928. Drawings to Specification. Revolving radial-cylinder engines, reciprocating-type; driving-gear. - In a rotary reversible motor, compressor, pump, &c., operated by compressed fluid as described in Specification 319,386, the gudgeon pins of the cylinders extend through slots in the cylinder walls and have rollers mounted on their ends which move in the annular recesses of two rings mounted freely and independently on fixed or fixable) eccentrics mounted on the fixed central valve.
Patent GB-111721-A (GB)
Title: Improvements in Cylinders for Uniflow Steam Engines.
IPC: F01B17/04
Filed: 1916-12-09
Abstract: 111,721. Galloways, Ltd., and Pilling, H. Dec. 9. 1916. Cylinders.-In a built-up cylinder for a uniflow steam-engine, the. barrel portions are separately and independently taper bored so that when the cylinder is hot it is approximately of uniform diameter. In the construction shown, the adjacent ends a, a<1> of the tapered barrel parts have ports F arranged between them, and peripheral flanges B enclosing an exhaust chamber C. The parts are connected by bolts D, E. Modifications are described wherein the chamber C is arranged in a separate ported castin" of more or less tubular form, or in a casting of channel section surrounding the adjacent cylinder ends and arranged between flanges thereon. The exhaust ports may be arranged in a separate casting arranged between and bolted to the two cylinder ends. Heating-jackets may be arranged between the exhaust chamber and the inlet ends of the cylinder.
Patent GB-581103-A (GB)
Title: Improvements in or relating to book rests and the like
IPC: B41J29/15
Filed: 1944-09-18
Abstract: 581,103. Book-rests &c. MURPHY, E. Sept. 18, 1944, No. 17775. [Class 52 (iii)] As shown a copyholder comprises a rectangular plate A, a strut C pivoted to it by a spindle B<1>, and a stay E pivoted to it by a pin D and having slots D<1> which can engage shoulders in a slot C<1> in the strut. Rollers B on the spindle B<1>, projecting through slots in the plate A, are rotatable by knobs B<2> and are covered by a paper holder F having slotted lugs F<1> engaging the spindle B<1>. A detachable book support G has a lug G' passing through a slot A<2> at the ends of which are lugs supporting the pivot pin D. According to the Provisional Specification, the book support may be mounted on the pivot pin D. Single sheets are inserted between the paper holder F and the plate A and are advanced by turing the knob B'. For a soft covered notebook the paper holder is reversed and the book suspended either from a rod F<2>, which extends between the lugs F<1>, or over the top of the plate A with some leaves held between the plate and the rod. The paper holder is also reversed when the stand is folded, Fig. 3, and keeps it so by holding the stay C.
Patent GB-1423912-A (GB)
Title: Information storage
IPC: H04N5/76
Filed: 1973-04-13
Abstract: 1423912 Capacitive playback record RCA CORPORATION 13 April 1973 [19 April 1972] 17792/73 Heading G5R The capacitive playback video disc record described in Specification 1,392,202 which comprises a vinyl disc with the video information recorded as geometric variations in the base of its spiral groove, a first coating of conductive, e.g. metal material and a second coating of dielectric material, is provided with a further coating of methyl alkyl siloxane to reduce friction between the record and a pick up stylus.
Patent GB-638786-A (GB)
Title: Improvements in pipe connections, in particular for the suction plant of spinning machines
IPC: F16L41/10
Filed: 1948-07-02
Abstract: 638,786. Jointing pipes to plates &c. BAKTSCHI, H. July 2, 1948, No. 17807. [Class 99(i)] The marginal edge 3 of an aperture in the wall of a conduit 5, such as used in the suction plant of spinning machines, is in the form of a helix to receive a screwthread 2 on a branch pipe 1, co-operating stop members such as a flange 7 of the pipe and an inner face of the conduit wall, being urged together to form a tight joint. The flange may have an upstanding edge 7a to form a seal, and a notch 4 may be provided in the aperture to facilitate entry of the screw-thread.
Patent GB-693571-A (GB)
Title: Loom shuttles
Inventor: LITTLE CHARLES RANDLE
IPC: D03J5/08
Filed: 1950-07-18
Abstract: 693,571. Loom shuttles. PEASE, E. D. June 18, 1951 [July 18, 1950], No. 17890/50. Class 142(iii) A shuttle peg comprises a sleeve 18 sliding on a spindle 14 and having an enlarged end 19 spring pressed against a correspondingly shaped recess in a cam member 11 fixed in the shuttle body by pins through holes 12. The other end of the sleeve has helical slots and is knurled on the outside to grip the pirn. The slotted end of the sleeve is expanded to grip the pirn by a spring pressed expander 28, whose movement is limited by a stop 20 secured on the spindle. When the peg is pivoted to the loading position, its end 19 engages a recess 24.
Patent GB-124711-A (GB)
Title: Improvements in or relating to Hollow Girders.
Inventor: ETTORE CARETTA
IPC: B64C1/06
Filed: 1918-11-01
Abstract: 124,711. Caretta, E. March 25, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Framework. - A hollow girder is formed of two or more pieces connected together by flanges or longitudinal ribs 2. The girders may be stiffened by ribs 3 formed on one or both sides of one or more walls, or by corrugating the walls.
Patent GB-876290-A (GB)
Title: Improvements in or relating to automatic filling machines
Inventor: CLINTON EDMUND MACGREGOR
IPC: B65B39/00
Filed: 1957-06-06
Abstract: 876,290. Filling containers with liquids. MATHER & PLATT Ltd. May 28, 1958 [June 6, 1957], No. 17990/57. Class 125(2). In apparatus for filling jam, paint or the like into tins, dripping from the filling nozzle is prevented by replacing a single large filling tube by a plurality of smaller, separate, parallel tubes 10 whose length and diameter are so related to the surface tension or viscosity of the liquid that dripping is prevented. As shown, tins 3 are carried in holders 2 in a circular path beneath the nozzles carried by a plate 5 rotating against a fixed valve plate 4 provided with an arcuate chamber 7 communicating with the nozzles and with a pipe 8 connected to a metering pump.
Patent GB-696723-A (GB)
Title: Solutions of acrylonitrile polymers containing an inorganic acid
IPC: C08K5/43
Filed: 1951-07-30
Abstract: Acrylonitrile polymers containing at least 80 per cent of acrylonitrile are dissolved in an organic solvent, e.g. dimethyl formamide, dimethyl acetamide and sulpholane, containing from 0.09 to 5 per cent of nitric acid of at least 70 per cent strength, hydrochloric acid of 35 to 38 per cent strength, or sulphamic acid of at least 99 per cent purity, to form a solution containing at least 5 per cent of polymeric material.  The acrylonitrile polymers may contain up to 20 per cent of one or more ethylenically unsaturated substances such as acrylic, methacrylic, and haloacrylic acids, methyl, butyl, octyl, methoxymethyl and chlorethyl acrylates, methacrylates, and alpha-chloracrylates, methacrylonitrile, vinyl and vinylidene fluorides and chlorides, 1 - fluoro - 1 - chloroethylene, vinyl acetate, chloracetate, propionate, and stearate, styrene, vinyl naphthalene, N-vinyl phthalimide and succinimide, N-vinyl caprolactam and butyrolactam, 2-vinyl pyridine, N-allylformamide, N - methallylformamide, N - ethallylformamide, N - vinyl - N - methylformamide, allyl urea, and N-allyl sulphonamides.  The acrylonitrile polymer may be blended with other polymeric materials such as a dye-receptive copolymer containing 10 to 70 per cent of acrylonitrile and 30 to 90 per cent of a vinyl-substituted heterocyclic amine.  The solutions produced are of reduced viscosity and may be formed into films, fibres, sheets, casings, tubings, or rods.
Patent GB-201163-A (GB)
Title: Improved manufacture of highly active charcoal
IPC: C01B31/12
Filed: 1923-07-12
Abstract: 201,163. Farbwerke vorm. Meister, Lucius, & Br³ning. July 22,1922, [Convention date]. Charcoal.-Active charcoal, of a practical hardness and not too voluminous, is made from peat or lignite by mixing it with finely divided wood, compressing and carbonizing, with or without impregnation by a chemical reagent. In an example peat is ground and mixed with sawdust and the mixture soaked with a solution of phosphoric acid. It is then compressed in moulds and carbonized, for instance, in a revolving kiln.
Patent GB-145753-A (GB)
Title: Improvements in conveyers
IPC: B65G53/08
Filed: 1920-07-02
Abstract: 145,753. Bernert, G. Sept. 4, 1917, [Convention date]. Pneumatic conveyers and elevators; screw and worm conveyers.-In pneumatic conveyers for grain &c. a pocket 17 is provided on the trunk 3 of the blower 2 into which the material falls if the air supply fails. A screw conveyer 18 in the pocket delivers the material to a screw conveyer 20 which carries it to the feeding-hopper 7 of the apparatus. A similar pocket may be provided on the casing 1 of the blower and may be connected to the hopper by a similar arrangement of conveyers.
Patent GB-279163-A (GB)
Title: Improvements in or relating to igniting or lighting devices
IPC: F23Q2/08
Filed: 1926-07-20
Abstract: 279,163. Salerni, P. M. July 20, 1926. Flanze protectors.-In a pocket igniter, a perforated wind-screen F, constructed wholly or partly of china, mica, asbestos or other bad or non-conductor of heat, as secured on the body A by a flange on the wick-holder 0. One of the Provisional Specifications describes also a construction in which the lid is provided with extensions or the like, adapted to fit outside or within the body and to form a wind-screen when the lid is open.
Patent GB-1349382-A (GB)
Title: Icebreaking ship
IPC: B63B35/08
Filed: 1971-06-01
Abstract: 1349382 Icebreaking cargo ship ESSO RESEARCH & ENG CO 1 June 1971 [16 June 1970] 18240/71 Headings B7A and B7S In an icebreaking cargo ship having an inice-operating waterline WL the hull includes at least a midship section having inboard or outboard sloping sides 13 intersecting the waterline and has vertical sides 12 below the waterline and the sloping sides. The height of these vertical sides is at least twice the height of any vertical side 14 located above any inboard or outboard sloping side intersecting the waterline. The hull at the zero waterline is relatively flat. Fig. 8 shows a midship section with inboard sloping sides 25.
Patent GB-121992-A (GB)
Title: Improvements in or connected with the Treatment of Fatty Acids to Render them Suitable for use as Oil-mediums for Paint and other purposes.
Inventor: BEVAN ARTHUR PERRINS
IPC: C09F5/00
Filed: 1917-12-11
Abstract: 121,992. Bevan, A. P. Dec. 11, 1917. Varnishes and paint vehicles.-Oil mediums for use in making paints, varnishes, putty, &c., are obtained from the fatty acids derived from linseed, palm, cotton-seed, whale, and other oils in the manufacture of glycerine. The fatty acids are treated with calcium hydrate or other alkali, and after this treatment a clear oil medium can be separated from the stearic acid and calcium stearate. Calcium or magnesium oxide or carbonate may be used instead of calcium hydrate. In an example, fatty acids from linseed oil are mixed with 4-7 per cent. of calcium hydrate made into a cream with water, and the temperature is raised to 220-230‹ F. to drive off the water. The stearic acid and calcium stearate are allowed to settle out, the separation being accelerated by an addition of white petroleum spirit if desired. Drying properties may be imparted by adding cobalt resinate, lead or manganese linoleate, or other drier.
Patent GB-414885-A (GB)
Title: Improvements in and relating to pressure fluid containers
IPC: B21K21/00
Filed: 1933-06-28
Abstract: 414,885. Making hollow - ware. CHESTERFIELD TUBE CO., Ltd., Derby Road, Chesterfield. June 28, 1933, No. 18445. Convention date, July 1, 1932. [Class 83 (ii).] A metal container for high-pressure fluid having a series of bulbous portions a connected by necks b is formed from a cylindrical body c by thickening the neck portions by rolling, pressing, or like operations before forming the bulbous portions. The neck portions of the cylinder may first be reduced in diameter and thickened, and the cylinder expanded between them, e.g., by fluid pressure to form the bulbous portions. The pressing or rolling tools d may have fluted faces.
Patent GB-824324-A (GB)
Title: Tobacco sheet material and method of forming
Inventor: BANDEL DAVID
IPC: A24B15/14
Filed: 1956-06-15
Abstract: Water-resistant tobacco sheet material contains between 0.5% and 33% by weight of a substantially water-insoluble galactomannan plant gum or gums, e.g. locust bean gum, guar gum, tara gum, honey locust bean gum or Kentucky coffee bean gum.  The material may contain from 2% to 15% by weight of fillers, e.g. kaolin, fuller's earth and polysaccharides such as cellulosic preparations. Flavourings and food dyes may be incorporated, as may other gums such as karaya, arabic, acacia and tragacanth, and cellulose derivatives such as methyl cellulose, carboxymethyl cellulose and hydroxyethyl carboxymethyl cellulose, alginates and pectates.  The carboxymethyl and hydroxyethyl ethers of galactomannan gums may also be used as the galactomannan gum constituent.  Strengthening fibres, such as glassine paper, cigarette paper or flax pulps, and humectants such as glycerin and diethylene glycol may also be incorporated, as may glyoxal to increase water resistance.  The moisture content of the material by weight should be between 8% and 24%, from 9% to 13% for cigarettes and 16% to 22% for cigar binders.  Preferably dry-ground tobacco stems or leaves or tobacco dust is used to form the material by coating a layer of gum formulation on one or both sides, the composite sheet being dried and worked into tobacco filler strips or further formed by pressing, moulding or extruding; or a wet mixture or dry mixture subsequently wetted of the tobacco with the gum and other constituents may be formed into a sheet by moulding, calendering, spreading on a belt or extrusion.  Where a gum layer is coated, this may be effected by first applying the layer over tobacco particles spread on a wetted film-forming surface and then coating the exposed gum surface with further tobacco particles; to effect easy removal of the composite sheet, the film-forming surface may be expanded by heat; before removal, the sheet is dried, optionally dyed on its exposed surface, and moistened; after removal it is optionally dyed on its other surface, and has its moisture content reduced and excess tobacco removed from both surfaces.  Alternative methods involving coating are to apply tobacco particles to a gum layer, and fold the tobacco-free surfaces into contact and adhere them, or turn the layer over and coat with tobacco particles the tobacco-free surface, to which fresh adhesive is added if necessary.  Combinations of the above coating methods may be used.  Quantitative process examples are given.  Specifications 727,886 and 727,903 are referred to.
Patent GB-925808-A (GB)
Title: A process for the manufacture of phosphorus-containing polyester resins
IPC: C08G63/692
Filed: 1959-06-01
Abstract: Phosphorus-containing artificial resins are prepared by jointly polymerizing by irradiation and/or heating and/or by addition of activators a compound containing an activated ethylenic double bond, which is liquid at the reaction temperature with a phosphorus containing polyester (Specification 925,807) which is dissolved in the unsaturated compound and which has been obtained by reacting a phosphorous or phosphoric monoester dihalide with an unsaturated polyester containing hydroxyl groups or with a mixture of a polyhydric or mixed mono- and di-hydric alcohols and polycarboxylic acids.  At least 5% (based on the phosphorus containing polyester) of the polyester is made up of residues of an a ,b -unsaturated carboxylic acid or of an alcohol of the allyl type.  The polymerization may be carried out in conjunction with a shaping operation.  Suitable comonomers for the phosphorus ester are:- styrene; alkyl styrene; vinyl naphthalene; vinyl acetate; vinyl propionate; acrylic acid; a -methyl acrylic acid and esters thereof; acrylonitrile; allyl acetate; diallyl succinate; diallyl phthalate, terephthalate or maleate; allyl and methallyl carbonates, phosphates and phosphonates; methyl or ethyl vinyl phosphonate; triallyl cyanurate; triallyl trimesate; unsaturated polyesters (see, for example, Specification 852,886).  Suitable activators for the polymerization are peroxides (a number of which are specifically mentioned); azo di-isobutyronitrile; octadecyl-1-isocyanate; paramethoxy sulphinic acid, dodecyl-, cyclohexyl-, benzene-, or paratoluene-sulphinic acid; N-bis-(paratolylsulphone methylene)-methylamine or 2-hydroxyethylamine; paratolylsulphone-, phenylsulphone-, or parachlorphenyl carbinol.  Accelerators, e.g. cobalt octoate may also be employed.  The products may be mixed with highly chlorinated hydrocarbons, fillers, or reinforcing materials, e.g. glass fibres.  In Example (1) phosphorous acid n-hexyl ester dichloride is reacted with a polyester from ethylene glycol, phthalic anhydride and maleic anhydride.  The product is dissolved in styrene and the mixture polymerized by heating with dibenzoyl peroxide, (2) and (3) are similar, but the ethylene glycol is first reacted with phosphorous n-butyl ester dichloride, and then with maleic and phthalic anhydride and the mixture with styrene may be hardened by heating with a peramide or at room temperature with methyl ethyl ketone peroxide and octadecyl 1-isocyanate.  Uses: The products are relatively highly insoluble, inflammable, transparent, and have good mechanical and electrical properties and low water absorption.  They may be used for shaped bodies or for impregnating paper or textiles or coating surfaces, followed by polymerization in situ.