baber/WOPTO huggingface dataset:
Patent GB-928459-A (GB)
Title: Improvements in the production of phthalic anhydride
Inventor: ROWSON HENRY MAURICE
IPC: C07C51/573
Filed: 1960-08-03
Abstract: Naphthaquinone is removed from an aqueous solution containing phthalic acid, maleic acid and naphthaquinone by treating the mixture with a solvent for the naphthaquinone, the solvent being immiscible with water and not a solvent for the phthalic or maleic acid and separating the solvent layer containing the bulk of the naphthaquinone.  Examples of solvents are benzene, toluene, xylene, benzol, toluol, xylol and the associated halogenated p  compounds, esters of benzoic acid, cycloparaffins, saturated and unsaturated halogenated hydrocarbons, propyl and butyl ethers and straight chain paraffins.  Trichlorethylene is a preferred solvent.  The treatment may be effected by countercurrent flow, e.g. in a packed tower, the solvent being fed to the top and the mixture to be treated being fed to the bottom.  The solvent may be recovered from the naphthaquinone by evaporation under vacuum. Crude mixtures of phthalic and maleic anhydrides obtained by vapour phase oxidation of hydrocarbons as in Specification 800,783 may be hydrated, treated by the above method to remove naphthaquinone, cooled to crystallise the acids, followed by centrifuging or filtration and the solid acids heated to convert them to the anhydrides.  The anhydrides may be separated and purified by distillation.
Patent GB-1526676-A (GB)
Title: Stylus assembly
IPC: G01D5/04
Filed: 1977-06-27
Abstract: 1526676 Recording pen mount P A MANAGEMENT CONSULTANTS Ltd 27 June 1977 26873/77 Heading B6P A recording pen or stylus 1 is mounted on a Watts linkage, and is so positioned relative to a moving recording medium that it executes a substantially linear motion across the tracereceiving part of the recording medium. The arms of the linkage may be of steel, about 0-1 mm. thick, connected by plastics material flexural hinges, e.g. of polypropylene.
Patent GB-168257-A (GB)
Title: An improved bracket or supporting base for lamps on motor cars or like vehicles
IPC: B60Q1/18
Filed: 1920-09-21
Abstract: 168,257. Walsh, J. M., and Snowden, E. N. Sept. 21, 1920. Vehicle supports.-For mounting side-lamps of the type provided with a side-socket and fixing - screw for securing to the usual lamp - iron, on the mud-guard, scuttle - dash or sides of a vehicle, a hollow bracket or base-member A is provided. This bracket is positioned on the mudguard E by steady-pins B, a hole being provided in the mud-guard through which the usual fixing- screw G passes and engages the screwed hole in the socket D of the lamp C which fits into the top of the bracket. In cases 'where the fixing- , screw would need to be unduly long, a plate H is provided inside the bracket A and a shorter screw, the head of which would bear on the plate, is used, the bracket then being secured to the mud-guard by nuts screwing on to the ends of the pins B, which may be screwed for this purpose.
Patent GB-1154841-A (GB)
Title: Improvements relating to Packets or Boxes and the manufacture thereof
IPC: B65D43/16
Filed: 1965-06-24
Abstract: 1,154,841. Boxes. MOLINS MACHINE CO. Ltd., and D. T. N. WILLIAMSON. 22 June, 1966 [24 June, 1965], No. 26911/65. Heading B8P. A process for making a box comprises the steps of moulding a frame F of synthetic plastics material with an integral hinge connecting it to a lid frame L, and thereafter securing one or more panels BP, LP of card, plastics &c. to complete the box. The panels BP, LP may bear printing and be secured by glue.
Patent GB-273642-A (GB)
Title: Process for extracting the fatty matter from the foams formed by the beating, froth flotation, or other treatment of wool-washing waters
IPC: C11B11/00
Filed: 1926-10-27
Abstract: 273,642. Mertens, E. July 1, 1926, [Convention date]. Wool fat, extracting and purifying.-Neutral fats are obtained from the froths or foams occuring on or produced by beating or aerating woolwashing water, by heating in a digester under a pressure of 2-3 atmospheres without the addition of alkali, acid, or other separating agent. The foams may be previously heated at atmospheric pressure to say 80-90‹ C. with water to separate sand, soaps, albuminous and other impurities. The fat floats and is skimmed off for further purification if necessary. The Specification as open to inspection under Sect. 91 (3) (a) describes also treatment at a few atmospheres pressure, continuous or batch operation, and states that caustic soda or the like may be present in the digester to eliminate fatty acids. This subject-matter does not appear in the Specification as accepted.
Patent GB-1301060-A (GB)
Title: Diesel booster
IPC: F02D9/08
Filed: 1971-04-19
Abstract: 1301060 Dual fuel engines INDUSTRIAL PROPANE Inc 19 April 1971 [14 Sept 1970] 26960/71 Heading F1B A booster for use with a Diesel engine comprises means 24 connectible to a source of vaporized liquid propane for providing gas at a constant vapour pressure, means 12 receiving the constant vapour pressure propane gas for regulating the volume flow of the propane gas in direct proposition to the fuel consumption of the Diesel engine and means 2 for injecting the volume regulated propane gas into the air intake manifold 3 of the Diesel engine. A clamp 42 is connected to the Diesel fuel pump linkage (not shown) and mechanically couples this linkage to the metering valve 12.
Patent GB-712084-A (GB)
Title: Hose for conveying and spraying liquids
IPC: B05B1/20
Filed: 1952-10-27
Abstract: 712,084. Spray producers. MUSCH & CO., GES., J. Oct. 27, 1952 [Nov. 19, 1951], No. 26969/52. Class 69 (3). [Also in Group XXVIII] A hose 1 is supported on the ground by a base part 2 and has radially and upwardly directec perforations 4 for the discharge of liquid conveyed by the hose. The base 2 may be wider than the hose 1, and the hose may be made of rubber or synthetic rubber, or a thermoplastic material such as plasticized polyvinyl chloride.
Patent GB-733912-A (GB)
Title: A process for producing protective coatings
IPC: C25D5/50
Filed: 1950-11-06
Abstract: Articles having a coating of pure chromium and intended to be used under conditions such that oxidation of the chromium cannot occur, are heated in an oxygen-containing atmosphere to such an extent that a layer of chromic oxide is formed on the pure chromium coating.  The atmosphere may be of air enriched with oxygen, ozone or substances forming oxygen at high temperatures, e.g. hydrogen peroxide.  Heating may be by electrical resistance or high-frequency induction; the latter may be used for articles coated by true-to-size hard chrome plating.  The treatment of turbine blades and bearing surfaces of machine parts such as cylinder liners and piston-rings is referred to.
Patent GB-381322-A (GB)
Title: Improvements in and relating to loud speakers
IPC: G01R22/02
Filed: 1931-09-28
Abstract: 381,322. Loud - speakers. IDEAL WERKE AKT.-GES. FUR DRAHTLOSE TELEPHONIE, 97, Grosse Leegestrasse, Hohensch÷nhausen, Germany. Sept. 28, 1931, No. 27027. Convention date, July 28. [Class 40 (iv).] A loud-speaker magnet system comprises an armature 9 having one end clamped at 8 to the frame 1 and passing through a coil 6 so that its free end oscillates past the pole shoes 3, 4 of a magnet 2, the magnet and its pole shoes being secured to the frame by screws 15, 16, 17. The coil 6 is also secured to the frame at 7 and the leads 11 are connected with the coil at 12. The driving rod 5 passes through one of the magnet limbs. Flanges 14 on the frame serve to secure the latter to the loud-speaker chassis. Specification 378,244 is referred to.
Patent GB-701109-A (GB)
Title: Method of producing aggregates for building materials
IPC: C04B38/06
Filed: 1950-11-06
Abstract: Low density bricks or aggregate for concrete are produced from carboniferous material of aluminiferous or slaty constitution and containing both carbonaceous fuel and volatile constituents with or without the addition of fuel by subjecting them to an air draught sintering.  Specified materials are residues from the carbonisation of aluminiferous oil shale, intermediate products or washing slag from the dressing of pit coal, inferior coal or coal containing washery slag, slaty overburden from opencast mining of brown coal, carbonisation residues from brown coals, and slate quarry waste. Additional fuels specified are cinder or coal dust from locomotives, carbon containing flue ash, brown coal waste or coke waste, singly or in admixture.  Admixtures for strength are fine sand or lime.  The sintered product may be cut into blocks and serve as insulating bricks, or it may be crushed, graded and mixed with cement to form porous concrete articles.
Patent GB-173463-A (GB)
Title: Improvements in or relating to drop-down guns and rifles
IPC: F41A17/50
Filed: 1920-09-29
Abstract: 173,463. White, J., and Payne, H. H. Sept. 29, 1920. Breech actions, drop-down barrel. - The safety-bar is formed of three pieces of wire or rod h, i, m, of which two h, m are secured to the third by being driven into perforations there- ;n. The rod i is formed with a notch k adapted to register with a projection j on the trigger when the parts are in the firing position. The wire h projects forwards and engages the locking- bolt g so that the safety-bar is automatically operated when the gun is unlocked, and the wire m engages the slide n on the upper part of the frame. The bottom of the wire m is guided in a slot r in the trigger-plate. Specification 173,319 is referred to.
Patent GB-1319878-A (GB)
Title: Process for the production of aminoalkylene phosphonic acids
IPC: C07F9/38
Filed: 1971-04-19
Abstract: 1319878 Aminoalkylene phosphonic acids JOH A BENCKISER GmbH CHEMISCHE FABRIK 19 April 1971 [15 April 1970] 27196/71 Heading C2P Aminoalkylene phosphonic acids are prepared by reacting a glycol chlorophosphite with an aldehyde or ketone and ammonia or an ammonium salt, an amine or amine salt, or an amide of a C 1-2  mono- or dicarboxylic acid. The glycol chlorophosphite may be ethylene-, 1,2-propyl. ene- or 1,3-butylene glycol chlorophosphite, the aldehyde may be formaldehyde and the acid amide is preferably formamide, oxamide or urea. Specified products are ethylene diaminetetra (methylenephosphonic acid), nitrilo-tris (methylene phosphonic acid) and diethylene triamine-penta (methylene phosphonic acid).
Patent GB-1436579-A (GB)
Title: Deep fat fryers
IPC: A47J37/12
Filed: 1973-06-07
Abstract: 1436579 Deep fat fryers H S COLLINGWOOD 17 Dec 1973 [7 June  1973] 27222/73 Heading A4D [Also in Division B1] A deep fat fryer comprises a cabinet 1 containing a frying basin 2 having a drainage outlet with valve 3, a settling tank 4 on which is detachably mounted a filter 8, the tank 4 having an outlet 6 in which is detachably mounted an overflow pipe 5, and a conduit 10 having a pump 9, connecting the outlet 6 with inlet 7 of basin 2. In use, used fat is drained from basin 2 through the filter into tank 4 where it is cooled by fat already present in the tank and where it is allowed to stand to settle out any sediment before it is pumped back to the inlet 7 of basin 2. To remove sediment from tank 4 a hose (not shown) is connected to inlet 7 and after removal of pipe 5 from tank 4, the sediment is pumped through the conduit 10 and hose to a suitable container.
Patent GB-812042-A (GB)
Title: Drier for wallboard and similar sheet-like materials
IPC: D21F5/00
Filed: 1957-08-29
Abstract: 812,042. Drying apparatus. SVENSKA FLAKTFABRIKEN, A. B. Aug. 29, 1957 [Sept. 6, 1956], No. 27250/57. Class 34(2) Sheet material, e.g. wallboard, is dried whilst being passed through a tunnel 7 first counter-current to a circulating hot air stream and then co-current with a similar stream, each stream arising from a set of superposed fans 19, Fig. 2, disposed in a channel 8 alongside the tunnel. Wet sheets are fed into the tunnel, in which are disposed a series of superposed roller tables or conveyers, by a roller table 1, feeding hoist 2 with roller table 3 and a stationary feeding rack 4, and are discharged therefrom through a rack 13 and a hoist 15. A fan 12 cools the hot discharging material. The air streams are heated inside the drier and part of the hot moistureladen air is continuously exhausted through channels and ducts 5a, 5, and 6a, 6, whilst fresh air, which may be heated in an exchanger through which the exhaust air is passed, is added to the streams through ducts and channels 6, 6a, and 10, 10a. The fan sets may be located in the channel 8 nearer the feeding and discharge ends of the drier, respectively.
Patent GB-929088-A (GB)
Title: Thin-walled containers and thin-walled closures for containers
Inventor: SHERLOCK JOHN GERRARD
IPC: B65D1/26
Filed: 1960-08-05
Abstract: 929,088. Plastics containers; container closures. PLASTIC PACKAGING Ltd. Aug. 2, 1961 [Aug. 5, 1960], No. 27288/60. Classes 66 and 125(3). [Also in Group XXIV] A thin walled container or closure therefor are formed with screwthreads, as shown in Figs. 1 and 2 respectively, the blank 5 of the thread being at only a slight angle to the axis of the container so that when the parts are moulded it is possible to separate each part from the mould without having to unscrew them. The angles formed by the steps of the thread are such that the flange on which the thread is formed has a mean taper. The container and closure are each formed from a sheet of plastics material, e.g polystyrene or polyvinyl chloride; the container may be of polystrene while the closure is of hard p.v.c. The screw-thread may be formed internally of the container and externally of the closure.
Patent GB-770556-A (GB)
Title: Improvements in fluid filters
IPC: B01D29/11
Filed: 1954-09-21
Abstract: 770,556. Filters. BENDIX AVIATION CORPORATION. Sept. 21, 1954 [Oct. 22, 1953], No. 27301/54. Class 46. [Also in Group XXVIII] A hollow cylindrical filter element 20 of radially pleated resin impregnated paper 26 has moulded to its ends plastic caps 28, 30, provided with concentric grooves on their outer surfaces the associated ridges of which effect sealing engagement with adjacent surfaces of the filter housing. The latter comprises a bowl 16 secured by a spring- pressed bolt 22 to a head 10 housing an inlet 12 and an outlet 14. The plastic used is a vinyl resin compound.
Patent GB-352805-A (GB)
Title: An improved sanitary towel
IPC: A61F13/64
Filed: 1930-09-12
Abstract: 352,805. Catamenial appliances. JOHNSON & JOHNSON (GT. BRITAIN), Ltd., Slough, and BLEASDALE; J. F., Bideford, Bath Road, Cippenham, both in Buckinghamshire. Sept. 12, 1930, No. 27353. [Class 81 (ii),] A sanitary towel has a filling 2 which is substantially triangular in longitudinal section, as shown in Fig. 1, the cross section varying from a maximum along the plane A-A, where it is approximately of triangular shape, to minima at the ends. The filling preferably consists of chewed-up cardboard which is moulded or otherwise shaped and is wrapped in a number of layers of cellulose wadding. The pad so formed is inserted in a gauze holder 4, Fig. 3, provided with tapes or loops 5 for attachment purposes.
Patent GB-158381-A (GB)
Title: Improvements in or relating to trouser presses or the like
IPC: A47G25/72
Filed: 1919-11-06
Abstract: 158,381. Harper, F. B. Nov. 6, 1919. Combined presses a n d stretchers. - A stretching device of the type described in Specification 135,957 is applied to a press of the type described in Specification 11227/12, consisting of hinged boards a, b. Fig. 1, with an intermediate spring-pressed board l. The garment is gripped at the bottom as the boards close, and stretching is produced by the auxiliary spring-pressed board o, which moves diagonally into place. A similar board may be used at l<1>. When the boards a, b nearly meet racks i engage pinions e, Fig. 9, operated by handles h, Figs. 9 and 1. The pinions are held stationary by spring pawls k as required.
Patent GB-1221561-A (GB)
Title: A table arrangement for supporting work pieces to be machined
Inventor: BERTHIEZ CHARLES WILLIAM
IPC: B23Q3/16
Filed: 1968-06-10
Abstract: 1,221,561. Work-tables; boring machines. C. W. BERTHIEZ. 10 June, 1968 [11 July, 1967], No. 27428/68. Headings B3B and B3C. A work-table arrangement for supporting a wide range of size of workpieces comprises a small rotatable table 5 movable along a pit 7 on a bench slide 10 and a large rotatable table 6 that has no drive means itself but which can be coupled to the small table 5 by means of a pivot bolt 30 to be moved along the pit 7 and to be rotated thereby. The large table 6 can be increased in size by mounting arms 19 to its periphery. The large table 6 comprises a structure 17 that can be rotated on wheels 25 mounted around the periphery of a seat structure 24, the seat structure itself being movable on wheels 27 along tracks on either side of the pit 7. The wheels 27 are retractable so that when the worktable arrangement is in a working position relative to a vertical milling and boring machine 1 the seat 24 can be lowered so that bearing pads 29 seat on the track. The pivot bolt 30 includes a screw jack, an hydraulic piston and a resilient device so that the weight of the large table 6 plus its extension arms 19 can be transmitted, to a pre-determined extent, to the small table 5. The resilient device includes means for setting the amount of weight transmitted according to the length of a particular set of arms 19. (For Figure see next page.)
Patent GB-646338-A (GB)
Title: Improvements relating to drawers of filing cabinets
IPC: A47B88/14
Filed: 1948-10-25
Abstract: 646,338. Drawers. AITCHISON, J., and EMBERTON, R. A., (trading as BUYWELL SUPPLIES.) Oct. 25, 1948, No. 27646. [Class 52 (i)] Antifriction rollers 10 are mounted at the rear of a drawer bottom and front of a cabinet floor by welding the ends of the roller spindle 11 across depressions 15, 12 in the respective parts in which the rollers are partly sunk.
Patent GB-392813-A (GB)
Title: Improvements in and relating to rotary ploughs
IPC: B62D51/06
Filed: 1932-10-05
Abstract: 392,813. Machines for working land. DUFOUR, L., Versoix, near Geneva, Switzerland. Oct. 5, 1932, No. 27700. Convention date, Oct. 7, 1931. [Class 6 (i).] A rotary - disc plough having a toothed concave disc driven by the motor which drives the travelling wheels is reversed by turning the disc from one side of the plough to the other about an axis of symmetry lying in a vertical plane extending in the direction of running of the machine, and by reversing its driving gear, so that it may always rotate in the same direction as the wheels. The disc 4 has symmetrical teeth 4<1> with both edges sharp. It is driven from the motor 1 through bevel gearing 6, 8 and shafts 5, 7, and through reversing gearing contained in a box B and controlled by a lever 12. The disc is reversed by turning it about the axis of the shaft 5 by means of a lever 9 on the casing enclosing the driving gearing. In a modification the disc is driven through a longitudinal shaft and a vertical shaft and is reversed by turning it about the vertical shaft. Specifications 4201/10 and 13027/14, [both in Class 6 (i), Cultivating implements &c.], are referred to.
Patent GB-187230-A (GB)
Title: Improvements in or relating to radiating incandescent gas heaters
IPC: F24C3/04
Filed: 1922-10-12
Abstract: 187,230. Garbarini, A. Oct. 12, 1921, [Convention date]. Gas stoves.-The invention comprises improvements in gas helating-stoves of the kind in which an " inverted " incandescent mantle is arranged in front of a parabolic reflector. The burner comprises a mixing-chamber 9 fixed in a sheath 8 attached to the back of the reflector, gas being admitted through a needle-valve 17 and air through holes 13, the opening of which is adjusted by a screwed ring 12. The " gallery " 20 which supports the mantle 19 is provided with hook arms 21 engaging ears 22 and retained in position by ,a collar 23 acted on by a spring 24. In order to obtain even heating of the mantle the lower part 26 of the burner mouth is bevelled off to form a large opening, whilst the upper half is pierced with small holes 25. The mantle is of thick texture and wide mesh and may be provided with a pellet of spongy platinum or palladium for automatic ignition. Protective crossbars 32 are hooked over the edge of the reflector and are twisted ta present a small surface in the direction of the heat rays. The Specification, as open to inspection under Sect. 91 (3) (a), comprises also a stand 1, Figs. 4 and 5, on which the reflector is supported by a hinged joint in which are inserted rings 29 of metal more ductile than that of which the base is formed, in order to diminish friction. The stand is provided with a hole 30 to enable the apparatus to be supported on a wall by a hook, and with a screwed socket 31 for suspension from a union on a ceiling. This subject-matter does not appear in the Specification as accepted.
Patent GB-826396-A (GB)
Title: New í¸-pregnadienes
IPC: C07J75/00
Filed: 1957-09-03
Abstract: The invention comprises 1,4-pregnadienes of the general formulae <FORM:0826396/IV (b)/1> and <FORM:0826396/IV (b)/2> wherein R represents an alkonoyl radical containing 1 to 6 carbon atoms, and the preparation of the 9,11-oxido compounds by treating the corresponding 9a -bromo-11b -hydroxy compounds with an alkali metal acetate or alkali metal alkoxide under anhydrous conditions, and the preparation of the 1,4,9(11)-triene compound by treating the required 16a ,21-di-alkanoyloxy-11b ,17a  - dihydroxy - 1,4 - pregnadiene - 3,20 - dione with thionyl chloride or phosphorus oxychloride, e.g. at a temperature from - 15 DEG C. to 20 DEG C.  The invention also includes a process for the preparation of 16a ,21-dialkanoyloxy-9a  - bromo - 11b ,17a  - dihydroxy - 1,4 - pregnadiene-3,20-dione in which the alkanoyl group contains from 1 to 6 carbon atoms by reacting the required 16a ,21 - dialkanoyloxy - 17a  - hydroxy - 1,4,9(11) - pregnatriene - 3,20 - dione with an N-bromo-acid amide, e.g. at a temperature of from 0 DEG  to 50 DEG C.  Suitable N-bromoacid amides are N-bromo-acetamide, N-bromo-succinimide, and N-bromo-phthalimide. In the examples the preparations of the 16a ,21-diacetoxy derivatives of all the compounds referred to above are described.  Specifications 824,351 and 826,395 are referred to.
Patent GB-1429849-A (GB)
Title: Piston pump unit
IPC: G01F11/02
Filed: 1973-06-11
Abstract: 1429849 Reciprocating pumps: suction reservoirs LKB-PRODUKTER AB 11 June 1973 [15 June 1972] 27783/73 Heading F1A The inlet port of a single cylinder reciprocating pump is directly connected to a container 7, for holding reagent liquids, by an adapter 8 which holds one end of a renting tube 9 having at least one loop therein. A pipette 4 is connected by an arm 3 to the pump housing so as to be moveable therealong and by a tube 6 and further adapter 5 to the outlet port of the pump.
Patent GB-1118508-A (GB)
Title: A process and apparatus for measu ring the etching depth of printing cylinders
Inventor: PAULY MANFRED
IPC: G01B7/34
Filed: 1967-06-16
Abstract: 1,118,508. Measuring linear dimensions. HABRA-WERK WILHELM F. OTT. June 16, 1967 No. 27876/67. Heading G1N. A system for measuring the etching depth of printing cylinders comprises an inductive transducer (5) responsive to variations in the surface of the printing cylinder, (or the etching layer). Preferably a pair of transducers are connected in a bridge circuit, the second transducer sensing a reference surface. The reference surface may be an unetched surface at the edge of the cylinder to compensate for eccentricity. In an alternative circuit arrangement Fig. 2 (not shown) the transducers are energized from a suitable source and the outputs applied to a comparator.