baber/WOPTO huggingface dataset:
Patent GB-438672-A (GB)
Title: Improvements in or relating to electrostatic devices for the interconversion of electrical vibrations and compressional vibrations in a fluid medium
IPC: H04R19/01
Filed: 1934-07-24
Abstract: 438,672. Receivers, transmitters, &c. GEMANT, A., 4b, Staverton Road, Oxford. July 24, 1934, No. 21691. [Class 40 (iv)] In an electrostatic instrument for the conversion of acoustic or other compressional vibrations in a fluid medium into electrical vibrations or vice versa, the electrostatic field is constituted by the surface field of one or more electrets. As shown, an electret disc 1 is clamped with its negatively-charged face against the wall 2 of a welded metallic casing 2, 3. This face of the electret disc 2 is metallized to ensure a good contact. An aluminium diaphragm 4 is secured in the casing opposite the positivelycharged face of the electret and a metal grid 5 or a perforated disc, insulated from the casing, is interposed between the electret and the diaphragm. The grid or disc 5 may be formed by metallizing the surface of the electret. The grid and the casing are connected in an external circuit, and movement of the diaphragm varies the ratio of the capacities between electret and grid, and between electret and casing, and so varies the current in the circuit. The casing is hermetically sealed and the interior dried.
Patent GB-467382-A (GB)
Title: Improvements in or relating to wicks for oil burners
IPC: F23D3/00
Filed: 1936-08-06
Abstract: 467,382. Wick burners. McCLELLAND, A. R., and FALK, STADELMANN, & CO., Ltd. Aug. 6, 1936, No. 21726. [Class 75 (i)] A strip 4 of flexible sheet material such as cotton fabric or tape is interposed between the lower edge of a tubular wick and the inturned tangs 3 by which a perforated metal cage 1 is secured to the wick, fraying of the wick being thereby prevented. The strip 4 is preferably secured to the wick by adhesive and by overcast stitching 5.
Patent GB-973677-A (GB)
Title: Improvements in or relating to a method for making dies or punches of plastic material
IPC: B41C3/06
Filed: 1962-06-05
Abstract: Dies and punches are made from unsaturated polyester resins by first forming photographically a relief reproduction of an image in bichromated gelatin (see Division G2) and taking an impression therefrom in a layer of unsaturated polyester resin containing a hardener-accelerator combination which enables curing to take place below the melting point of the gelatin.  In the example a mixture of 70% rigid grade and 30% flexible grade commercially available polyester dissolved in styrene is used with a mixture of 2.5% benzoyl peroxide and 1.5% dimethylaniline as the hardener-accelerator combination. The rigid grade is a polyester of phthalic and maleic acids with propylene glycol and contains 30% styrene and the flexible grade is a polyester of phthalic, maleic and adipic acids with propylene glycol and contains 50% styrene.  Up to 180% glass wool may be incorporated in the resin as a filler. If dies or punches of higher mechanical strength are required these can be obtained from the respective complementary punch or die made from the unsaturated polyester resin by making a print thereof in softened polyvinyl chloride or a thermosetting resin.
Patent GB-961706-A (GB)
Title: Improvements in or relating to hand pumps
Inventor: HARDWICKE DENIS JACK
IPC: F04B33/00
Filed: 1960-06-22
Abstract: 961,706. Making hand pumps; riveting. BIRMINGHAM SMALL ARMS CO. Ltd. Aug. 28, 1961 [June 22, 1960], No. 21797/60. Headings B3A and B3U. [Also in Division F1] In a hand pump, the piston ports L. W. D, are secured to the rod P by an upwardly or downwardly inserted rivet R, which is upset between an anvil (not shown) and a mandrel inserted into the rod P, the mandral also having a shoulder which bells out the end of the rod at G to secure the handle H.
Patent GB-1463809-A (GB)
Title: Polymeric materials
IPC: C08G18/16
Filed: 1974-04-25
Abstract: 1463809 Isocyanate based polymers IMPERIAL CHEMICAL INDUSTRIES Ltd 25 April 1974 [8 May 1973] 21828/73 Heading C3R Polymers, particularly polyurethanes, are prepared by reacting an organic polyisocyanate with an isocyanate-reactive material in the presence of a mono-substituted urea of the formula wherein R represents an organic residue. Suitable ureas are monoethyl urea, tert-butylurea, cyclohexyl urea, hexamethylene bis urea, tolylene bis ureas, 3-(n-butoxy)propyl urea, 3 - (methylmercapto)propylurea, imino bis- (ethylene urea) and oxybis-(propylene urea). The ureas, which are said to catalyse the isocyanate/reactive hydrogen reaction may be used in amounts of 0À01 to 5% based on the weight of polyol when the latter is used as the isocyanate-reactive material.
Patent GB-320439-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B23/00
Filed: 1928-07-28
Abstract: 320,439. English Electric Co., Ltd., and Ferguson, J. M. July 28, 1928. Cylinders receiving liquid fuel. - In an internal-combustion engine having a pair of oppositely moving pistons in one cylinder provided with recesses c forming a compression space coaxial with the fuel nozzle a, the surfaces d of the piston heads adjacent the compression space are arranged so that the air is forced from the narrow spaces e in a direction tangential to a circle coaxial with the nozzle, thus producing turbulence. When only one fuel nozzle is provided, the recesses c form a conical compression space with a spherical base b, whilst when two opposed nozzles are provided, the compression space is in the form of two cones with their faces meeting in the centre of the cylinder.
Patent GB-1142821-A (GB)
Title: Improvements in or relating to hollow polypropylene filaments and fibres
IPC: D01D5/24
Filed: 1966-05-17
Abstract: 1,142,821. Making hollow polypropylene fibres. L. COSTELLO, G. SHAW, and J. C. LEWIS. 17 May, 1966 [18 May, 1965], No. 21954/66. Heading B5B. [Also in Division A4] Hollow unoriented polypropylene filaments are passed through a heated orientation zone at a temperature such that they may be stretched to 2 to 4À5 times their initial length thereby orienting them and are then treated in a heated annealing zone at a temperature and for a period of time such that the elongation at break of the filaments at room temperature is at least 60%, in the case of a homopolymer of propylene, and at least 40%, in the case of a copolymer of propylene. The term " polypropylene " is defined as including propylene homopolymer and copolymer of propylene wherein polymerized propylene is present in a major proportion, as in polyallomers such as propylene-ethylene copolymers. The preferred filaments are isotactic polypropylene filaments and crystalline polyallomer filaments. The term isotactic polypropylene is defined as meaning polypropylene comprising crystallizable isotactic molecules and up to 15% of amorphous, non-crystallizable macromolecules. The stretching of the filaments may be carried out by means of feed and draw roll at 203‹ to 284‹ F. The stretched filament may be allowed to shrink from 1 to 10% during the subsequent annealing or heat-setting step which may be effected at 280‹ to 310‹ F., preferably for 1 hour at 300‹ F. The preferred filaments of the invention range in diameter from 0À008 to 0À050 inch and may be cut to form staple fibres suitable for use in the manufacture of brushes.
Patent GB-222639-A (GB)
Title: Improvements in the construction of nut blank forming machines
IPC: B21K1/68
Filed: 1923-08-31
Abstract: 222,639. Hollings, E. Aug. 31, 1923. Forging nuts; dies.-In machines for making nut-blanks, as described in Specification 206,315, the back stop 4 is moved back, at a gradually in. creasing speed, during the operation of the indenters 8, 9, for instance by means of a spring 6, lever 3 and detachable cam 7 on the shaft 1. When only one indenter 8 is moved, the back stop is mounted on a lever 3a, Fig. 6, so as to move laterally as well as back. Specifications 23116/13 and 211,655 also are referred to.
Patent GB-792285-A (GB)
Title: Improvements in or relating to side-delivery hay rakes
Inventor: SPICACCI ATTILIO REGULUS
IPC: A01D78/00
Filed: 1956-07-16
Abstract: 792,285. Side-delivery rakes. FEDERALMOGUL-BOWER BEARINGS, Inc. July 16, 1956, No. 21961/56. Class 6(3).  In a side-delivery hay rake, having end plates 16 with pivot pins 17 bearing tine-bars 18, the plates are rotated by drive from a wheel or towing tractor and each end of each tine-bar is bolted to an ear 30 of a grease-holding cap 29 retained by a snap ring 34 around a ball bearing secured by a nut 31 on one end of a pin 17 held by a cotter-locked nut 21 on to one of the end plates 16. Further, the axis 25 of the pin 17 is parallel to the axis of rotation of the end plate 16  and is intersected by the axis 26 of the tine-bar 18 in the plane of rotation 50 of the ball bearing. A lubrication seal 39 is provided below the ball bearing and below this more grease may be packed. A flanged washer 37 is held between a flange on the pin 17 and the end plate 16 to act as a dust shield for the bearing. The ears 30 and the ends of the tine-bars 18 are formed with upturned edges, Fig. 5, between which a resilient pad 46 is held. A slot 42 in the tine-bar end permits adjustment.
Patent GB-505486-A (GB)
Title: Improvements in domestic cooking apparatus
IPC: F24B5/08
Filed: 1937-08-10
Abstract: 505,486. Cooking - stoves. SCOTT, C: L. Aug. 10, 1937, No. 21992. [Class 126] In a solid-fuel cooking-stove, the burning fuel on the grate 1 lies in contact with metal members 10, 11 which heat the oven 8 by conduction and the combustion gases pass up the passage 7 to flues 7a, 7b beneath the hot-plate 14 which is thus heated by convection, the oven itself being insulated, by asbestos or like sheeting 15 from the hot-plate flues 7a, 7b. A subsidiary oven 9 is provided below the main oven 8 and is heated partly by radiation from the member 11 and partly by conduction through the metal connecting members 12. The main oven 8 is provided with baffles 19, 20 and air inlet and outlet openings 24, 25 as described in Specification 505,458.
Patent GB-853436-A (GB)
Title: Improvements relating to pneumatic tyres and other air-proofed articles
IPC: B29D30/38
Filed: 1958-07-09
Abstract: 853,436. Yarns and threads. GOODYEAR TIRE & RUBBER CO. July 9, 1958 [Dec. 18, 1957], No. 21993/58. Drawings to Specification. Class 120(3). [Also in Groups VIII, XXVIII, XXXII, and XXXIV] An arrangement for impeding the flow of air comprises a multiplicity of cords each consisting of a plurality of twisted filaments forming interstices throughout the cords, in which the cords are embedded in a rubber compound containing a rubber-incompatible migratory organic liquid of relatively low volatility, at least a portion of which has migrated into the interstices of the cords in sufficient amount to form a block against the movement of air through the cords. The rubber-incompatible migratory liquid is a liquid which is insoluble, or very sparingly soluble in rubber, and behaves in a manner similar to castor oil in respect of compatibility with and migration in rubber, and may be a hydroxylated oil, e.g. castor oil, a fatty acid ester, including esters of ricinoleic and myristic acids, a polyester, e.g. polypropylene adipate, polypropylene azelate, or polyethylene adipate, a polyglycol, e.g. a, polyethylene, polyproplylene, polybutylene or polyneopentylene glycol of low molecular weight or their mono- or di-esters, or polyhydric alcohols such as glycerin or ethylene glycol. The filaments may be of rayon, cotton, nylon or steel.
Patent GB-360003-A (GB)
IPC: H01J9/395
Filed: 1930-07-21
Abstract: In producing the vapour of an alkali or alkaline earth metal in evacuated containers such as thermionic valves, a compacted intimate mixture of a difficulty reducible compound of the metal with four or more times its own weight of thorium powder is introduced into the container and heated to reduce the compound and volatilize the metal. The vapour may improve the vacuum or a cathode may be activated in barium or caesium vapour.  The compound may be an oxide, carbonate, oxalate, fluoride, or a double fluoride with rare earth or rare metals such as zirconium and titanium.  Thorium powder may be prepared as described in Specification 238,663, [Class 82 (i), Metals, Extracting, &c.]. Dehydrated barium oxide may be mixed with thorium in the proportion 1 to 20 by weight and wetted with an ether solution of paraffin, the ether evaporating and the paraffin protecting the oxide from the air during subsequent processes of granulating and compacting into pellets.  Small increments of barium vapour are produced by repeatedly heating.  If barium carbonate is employed, the oxide is produced by preliminary heating of the pellet. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use, instead of thorium, of other rare earth or non-vaporizing metals, such as zirconium, titanium, hafnium, vanadium, and tantalum.  This subject-matter does not appear in the Specification as accepted.
Patent GB-270546-A (GB)
Title: Improvements in vehicle direction indicators
IPC: B60Q1/34
Filed: 1926-09-07
Abstract: 270,546. Laconi, T., and Ferretti, A. Sept. 7, 1926. Road-traffic signals on vehicles.-A turning and stopping indicator comprises a bar 4 mounted on rollers 6 within a tubular casing 1 and adapted to be moved longitudinally by means of a handle 12 so as to project a signal hand 7 pivotally supported on the bar and capable of movement, after projection, to give further signals. The handle passes through a slot 3 in the casing and has a spring plunger normally engaging the slot to maintain the hand in line with the bar. If it is desired to denote a right turn or stopping, the handle is disengaged from the slot alter the hand has been projected and is then moved down or up to turn the hand upwards or downwards, this being effected by a cord connection 9 attached to pulleys on the hand and handle. The handle is held in either extreme position by the plunger engaging a bracket 16 or beneath the casing.
Patent GB-933176-A (GB)
Title: Improvements relating to the growth of single crystals
Inventor: GASSON DENYS BROMLEY
Filed: 1961-06-19
Abstract: <PICT:0933176/III/1> A dendritic crystal is pulled, by the use of a seed crystal 6, from a supercooled region of a molten zone 4 in a horizontal rod 1 of silicon supported by clamps 2 which are moved together as pulling proceeds.  The molten zone is suspended by the passage of a current therethrough combined with the application of a horizontal magnetic field, produced by an electromagnet 3, normal to the current path.  The molten zone and the supercooled region may be formed by the heating effect of the current combined with extraction of heat from the clamps 2, or (as shown) by two induction coils 5 of variable power and position.
Patent GB-1056313-A (GB)
Title: Coccidiostatic compositions
IPC: C07D213/71
Filed: 1964-05-28
Abstract: Compounds of the formula <FORM:1056313/C2/1> (wherein R is H or Me and each of R1 and R2 is H or C1- 5 alkyl) are prepared by reacting the appropriate 3-pyridine sulphonic acid with phosphorus pentachloride to form a 3-pyridine sulphonyl chloride, which is then reacted with ammonia or a suitable amine to form the appropriate sulphonamide.  The products form salts with acids and with bases.ALSO:Anti-coccidial compositions comprise compounds having the formula: <FORM:1056313/A5-A6/1> where R is H or Me, and each of R1 and R2 is H or C1-5 alkyl, or a non-toxic salt thereof, dispersed in animal feeds or feed supplements.  For addition to the drinking water of poultry, the anti-coccidial compounds may be admixed with a suitable carrier or diluent to form a water-dispersible powder. One or more other anticoccidial compounds primarily effective against E. tenella, e.g. 2-methyl-3,5-dinitrobenzamide, nicarbazin, glycarbylamide, 3,5-dinitrobenzamide, methiotriazamine-bithionol mixtures, 1-(2-C1-5 alkyl-4-amino-5-pyrimidinylmethyl)-2-methyl pyridinium quarternary salts such as amprolium, and 1-(2-C1-5 alkyl-4-amino-5-pyrimidinylmethyl)-4-methyl pyridinium quarternary sals such as 1-(2-n-propyl-4-amino-5-pyrimidinylmethyl)-4-methyl pyridinium chloride hydrochloride, may be added to the 3-pyridine sulphonamide compositions.  Coccidiostats active against E. maxima, e.g. compounds of the formula:  <FORM:1056313/A5-A6/2> wherein Y is H, a hydrocarbon radical having fewer than 9 carbon atoms or an equivalent of a metal, X is O or S, R is C1-5 alkyl or alkenyl, and A is an amino or alkylamino radical (including hydroxy-substituted and halogen-substituted alkylamino) or a radical that is convertable thereto by heating with 6N HCl for not more than 3-4 hours, e.g. acylamino, may be added to the compositions containing a 3-pyridine sulphonamide and a coccidiostat effective against E. tenella.
Patent GB-1124029-A (GB)
Title: Reversible transmission for mowing machine
Inventor: SPEISER RALPH W
IPC: A01D34/42
Filed: 1965-08-18
Abstract: 1,124,029. Reversing gearing; controlling clutches. TORO MFG. CORP. 18 Aug., 1965 [19 Aug., 1964], No. 22154/68. Divided out of 1,124,024. Headings F2D and F2L. Reversing gear for use in the traction wheel drive of a motor mowing machine described in Specification 1,124,024, comprises a driving pulley 53 secured on the output shaft 51 of a motor 50, a driven pulley 56 secured on a shaft 65 rotatably mounted on an arm 64 pivoted about a fixed-axis shaft 61, and a belt 55 round the pulleys,. the arm 64 being positioned by a manual control lever 67 acting through an over-centre spring strut 69 so that pulley 56 is urged away from pulley 53 to tension the belt 55 for drive in one direction, and is urged into frictional contact with pulley 53 for drive in the other direction. Belt 55 is slack in the latter case. Axles 112, 112<SP>1</SP> are driven from the shaft 65 via a sprocket 58, a chain 59, sprockets 62, 63 secured to the shaft 61, a chain 124, and a differential 122. A rear steerable wheel (130) (Figs. 1, 5, not shown) can also be driven from the shaft 61 to improve adhesion, via chain and belt transmission (Fig. 6, not shown), this rear wheel drive being engaged by depressing a pedal (260) to cause a jockey pulley (268) to tension a driving belt (275). Alternatively, the rear wheel drive from shaft 61 is via a telescopic cardan shaft and bevel gearing, with a final chain drive (Fig. 7, not shown). A pulley 52 secured on shaft 51 and a pulley 57 on a hollow shaft 115 coaxial with the axle 112 are connectible by a belt 54 to drive reel cutters of the mower. The drive is engaged and disengaged by moving a jockey pulley 78 to tension or release the belt 54. A manual control lever 71 acts via an over-centre spring strut 74 to position the jockey pulley. Shaft 115 is connected to the cutters by chains 90, 91.
Patent GB-531733-A (GB)
Title: Improvements in or relating to the manufacture of cellular products
IPC: C04B28/26
Filed: 1939-07-31
Abstract: 531,733. Cellular products. JACKSON, L. MELLERSH-. (Berry & Co., Inc., F. E.). July 31, 1939, No. 22184. [Class 70] Cellular products for heat and sound insulation purposes are made from a mixture of an aqueous solution of an alkali metal silicate and a granular filler, the alkalinity of the solution being controlled in the ratio of not more than three parts SiO 2  to one part of the alkali oxide in order to regulate the cell size. The mixture is beaten in the presence of a foaming agent, dried at a gradually increasing temperature and then further heated. An example is given of the use of limestone, sodium silicate, powdered glass, frothing agent and water. The alkalinity may be adjusted by adding an alkali hydroxide. To increase the resistance of the product the cellular product, either before or after heating, may be treated with a weak acid, acid gas or acid salt, or by incorporating in the mix before heating, sulphur, metal oxides, metal salts or neutral glasses which will co-alesce or unite with the binder or by coating the surface with waterrepellants such as metal soaps, drying oils or waxes, or by treating with a solution of calcium chloride, aluminium or zinc sulphate, or chloride, and drying in an atmosphere containing carbon dioxide.
Patent GB-434994-A (GB)
Title: Improvements in and relating to a method of and apparatus for measuring the viscosity of a liquid
IPC: G01N11/00
Filed: 1934-07-30
Abstract: 434,994. Viscosimeters. GEMANT, A., 4B, Staverton Road, and SOUTHWELL, R. V., 9, Lathbury Road, both in Oxford. July 30, 1934, No. 22222. [Class 106 (ii)] Comprises a method of measuring the viscosity of a liquid consisting in applying pressure to a column of liquid in a manner to produce oscillations and observing the characteristics of the oscillations produced. The U-tube 1 contains a reference liquid such as mercury and is connected by a tube 4 to the U-tube 2 containing liquid to be tested the ends 3 of this tube being enlarged. The tube 4 is connected with a chamber 5 in which is a plunger 6 reciprocated through linkage 7 from a constant speed motor. U-tubes 8, 9, of small section form extensions of the tubes 1 and 2 and contain benzene. The amplitude of the oscillations may be observed by means of a scale 10. Instead of the tube 2 two vessels connected by a straight tube may be used the level of the liquid in the vessels being above the ends of the tube. Instead of the chamber 5 a chamber provided with a plunger having a liquid mercury seal may be used.
Patent GB-1026083-A (GB)
Title: Improvements in and relating to a method of protecting water during storage
IPC: C02F1/02
Filed: 1963-06-04
Abstract: Water is protected against contamination during storage by treating with 180-240 parts per million of disodium orthophosphate and heat sterilizing it followed by sealing under vacuum in an unlacquered metal container or a plastic container stable in contact with water.
Patent GB-1245670-A (GB)
Title: Process for preparing fibrous web
Inventor: GUENTHER LLOYD M
IPC: B29C67/00
Filed: 1969-05-01
Abstract: 1,245,670. Fibrillated sheet. CHEVRON RESEARCH CO. 1 May, 1969 [3 May, 1968], No. 22336/69. Heading D1R. A regular fibrous web is formed by feeding a uniaxially oriented polymer film 13 under a controlled tension e.g. 600-3000 p.s.i. between the rotating surfaces of a driven toothed roller 11 having parallel helical rows of substantially equidistant teeth 14 and a driven presser roller 12 having helical grooves 15 which mate with the rows of teeth. The film is fed at an angle α such that it contacts the surface of the latter roller before that of the former and is supported on the presser roller surface. The rollers rotate synchronously in opposite directions at a peripheral speed 1.5-20 times greater than the film speed thus forcing the teeth 14 through the film 13 info the grooves 15 to cut slits in the film. The resulting fibrillated film is withdrawn at such an angle # that the film remains in contact with the surface of the presser roller 12 until after the teeth 14 have disengaged the film. The film may be made of polyolefine, polyesters or polyamides.
Patent GB-1177018-A (GB)
Title: Process for the Production of Alkenyl Thioesters
IPC: C07C327/20
Filed: 1967-05-15
Abstract: 1,177,018. Alkenyl and haloalkenyl thiocarboxylic esters. SOC. NATIONALE DES PETROLES D'AQUITAINE. 15 May, 1967 [21 April, 1967], No. 22647/67. Heading C2C. Alkenyl and haloalkenyl thiocarboxylic esters (including the novel compounds 2-chloropropen-2-yl thioacetate; 3-chloropropen-2-yl thioacetate; 3 - chloro - methylpropen - 2 - yl thioacetate; 2,3 - di - chloropropen - 2 - yl thioacetate; and 2,3,3-trichloro-propen-2-yl thioacetate) are prepared by reacting an organic thiocarboxylic acid with a haloalkene containing one or more halogen atoms in the molecule, in the presence of a base in a proportion equivalent to the acid or the salt of such an acid and base.