baber/WOPTO huggingface dataset:
Patent GB-1094999-A (GB)
Title: Improvements in and relating to the production of sulphonic acids
Inventor: AN STANLEY FREDERIC MARRI
IPC: C07C303/14
Filed: 1965-07-19
Abstract: Sulphonic acids are prepared by adding elemental sulphur to an acrylic or a cyclic saturated hydrocarbon and reacting the resulting mixture with sulphur dioxide and oxygen. The hydrocarbon is preferably a normal or single branched paraffin of 8 to 18 carbon atoms or a cycloparaffin having 6 or 7 carbon atoms; more than 5% by weight of sulphur based on the hydrocarbon is preferably added; the sulphoxidation may be initiated suitably by acetic anhydride and is carried out at temperatures between 50 DEG  and 80 DEG  C.
Patent GB-731551-A (GB)
Title: Improvements relating to thermionic valve amplifying and frequency changing circuit arrangements
IPC: H03D7/08
Filed: 1952-12-04
Abstract: 731,551. Valve amplifying circuits; superheterodyne circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Dec. 4, 1952 [Dec. 4, 1951], No. 30749/52. Classes 40 (5) and 40 (6). A valve is caused to oscillate so strongly that the effective slope is independent of changes in the actual slope. The arrangement may be applied to an amplifier to maintain the gain constant, the valve being back-coupled over a tuned circuit O, Fig. 1, to oscillate at a frequency which is greater than any passed by the signal circuits TE, TA. A further use is in a self-oscillating frequency-changer, to stabilize the damping of the input or output circuits; the Specification describes a number of such arrangements. In one, Fig. 3, local oscillations are generated-in such strength as to render the effective slope constant-by inductive back-coupling between the anode circuit and a tuned grid circuit O. The signal is injected at a null point in circuit O, via a tuned signal circuit E. The arrangement is utilized to stabilize the damping of the I.F. output circuit Z, which is reduced by feed-back via a grid coupling coil RZ. Condenser CE constitutes a by-pass at signal frequencies. The coil RZ may alternatively be included in the cathode circuit. In a modification, Fig. 5 (not shown), the coupling coil RZ is dispensed with and I.F. feed-back obtained by connecting the circuit Z so that a part is also in the grid circuit. The circuit Z is provided with a capacity tap for this purpose, and in a further modification, Fig. 8 (not shown), the oscillator coupling coil RO is connected in series with one of the condensers in question. In another embodiment, Fig. 4, the oscillator circuit O is of the Colpitts type and is connected in series with the I.F. circuit Z, feed-back at I.F. being governed by a tap N which is earthed for such frequencies over the H.F. choke DR. In a modification of this, Fig. 6 (not shown), the oscillator O is connected in the Hartley manner and the tap on the circuit Z is of the capacity type, comprising the anode-to-cathode capacity of the valve, in conjunction with a condenser interposed between the signal input circuit and ground. In still another embodiment, Fig. 9, the input circuit E takes the form of a bridge network, which is balanced by means of condensers T1, T2. The oscillator circuit O is connected to a null point in the circuit E, while I.F. feed-back from the circuit Z is provided for by a capacity tap comprising condensers C1, C2. Specification 729,950 is referred to.
Patent GB-1114897-A (GB)
Title: Improved safety closure cap
IPC: B65D41/46
Filed: 1965-07-20
Abstract: 1,114,897. Caps for bottles. VEREINIGTE KAPSELFABRIKEN NACKENHEIM G.m.b.H. 20 July, 1965 [18 Feb., 1965], No. 30801/65. Heading B8T. A metal or plastics cap for a bottle has a peripheral weakening line 3 allowing separation of the cap crown 1 from a relatively long conical skirt 7 which contacts the bottle neck 4 only at its lower rim 11 and in a retaining groove 6 of the neck. As shown, the cap, which may be made of aluminium, has a cork or plastics sealing insert 2, and may be given a screw-thread by pressing it over the threaded bottle neck. In another form an unthreaded cap having two peripheral lines of slits engages a bottle having a grip cork. Preferred pitches for the taper of the conical skirt 7 are between 1: 12 and 1: 20.
Patent GB-1471006-A (GB)
Title: Preparation of albumin
IPC: C07K14/765
Filed: 1974-07-11
Abstract: 1471006 Isolating albumin from blood NEW ZEALAND INVENTIONS DEVELOPMENT AUTHORITY 11 July 1974 [11 July 1973] 30863/74 Heading C3H A process for the preparation of blood albumin comprises separating by means of an anion exchange resin capable of adsorbing blood albumin fractions an albumin-containing fraction of blood proteins from blood serum or plasma, adding to a solution of said albumin containing fraction of blood proteins an agent capable of stabilizing the albumin therein against heat denaturation, subjecting the resultant solution of blood proteins to heat denaturation, and separating blood albumin from the resultant product. The anionic exchange resin may comprise exchange groups selected from amino, alkylamino, guanidino and quaternary ammonium groups, e.g. diethylaminoethyl cellulose. The stabilizing agent may be acetyl tryptophan, a medium chain fatty acid or a salt of a medium-chain fatty acid.
Patent GB-876282-A (GB)
Title: Castors for articles of furniture or the like
Inventor: JAMES JOHN MARTIN
IPC: B60B33/00
Filed: 1959-09-11
Abstract: 876,282. Castors. HARRISON (BIRMING- HAM) Ltd. June 22, 1960 [Sept. 11, 1959], No. 31023/59. Class 52(1). A castor has a vertical pivot spindle a secured to a fixing plate b, and a hemispherical hollow roller e having attached thereto a supporting spindle f, interconnected by a flat disc g which closes the open side of the roller e and has on one face a hollow boss h to receive spindle f and also a hollow boss n serving as a bearing for spindle a. A small ball i acts as a thrust bearing as does a similar ball in boss n.
Patent GB-716025-A (GB)
Title: Improvements in the manufacture of filamentary materials by a wet spinning process
Inventor: TAYLOR WILLIAM IVAN
IPC: D01F6/16
Filed: 1950-12-20
Abstract: Artificial filaments are spun by extruding an acetone solution of a fibre-forming substance into a fatty oil at 45 DEG -70 DEG  C., and especially at 48 DEG -56 DEG  C., the acetone content of the oil at no time being allowed to exceed the highest concentration of acetone in a binary mixture of the oil and acetone at which a previously unstretched thread of the substance, immersed in the mixture at the spinning temperature, can be stretched without breaking by applying a tension of 1 gram per denier for 2 minutes.  The fibre-forming substance may be an acetone-soluble cellulose ester or ether (particularly cellulose acetate), polyvinyl acetate or acetone-soluble copolymers of vinyl acetate with other vinyl compounds, e.g. vinyl chloride.  The term "fatty oil" denotes both ordinary and hydrogenated animal or vegetable oils, fats or waxes liquid at temperatures below 45 DEG  C. (including commercial varieties containing up to 50 per cent. by weight of free fatty acid), or triglyceride or long-chain alkyl esters of long-chain fatty acids, singly or in mixtures, obtained from these or other sources, the term "long-chain" denoting a chain of 12 or more carbon atoms. Examples of fatty oils which may be used are coconut, palm, sperm and, preferably, arachis oil.  In the example a 26 per cent. solution of cellulose acetate in anhydrous acetone is supplied to a spinneret arranged for upward spinning and mounted in an extrusion chamber provided with an inlet for coagulating liquid below the level of the jet face.  A tube 12 inches long and 2 inches in diameter is mounted on the extrusion chamber and is provided at the upper end with an overflow gutter. At the beginning of spinning the chamber and tube contain petroleum ether at 20 DEG  C. to a depth of 0.5-1 inch above the jet face, but as soon as filament formation has begun this is displaced by arachis oil entering the extrusion chamber inlet at 52 DEG  C.  The rate of oil feed is so adjusted that when it overflows at the top of the tube it contains 10-12 per cent. of acetone. The filaments formed are drawn from the tube vertically upwards through the atmosphere for 6 feet, pass over guides to wipe off adherent oil, then through a bath of continuously replenished petroleum ether, and finally, after a further short air run, pass to a packaging device. An aliphatic ether, such as di-isobutyl ether, may be used instead of petroleum ether for removing the remaining oil from the filaments. The process is adapted for the production of heavy denier (e.g. 25-35 denier) filaments and artificial bristles.  Specifications 695,559 and 697,967 are referred to.
Patent GB-271756-A (GB)
Title: Tobacco substitute, with therapeutical properties
IPC: A24B15/16
Filed: 1926-12-07
Abstract: 271,756. Chisholm, F. K. Dec. 7, 1926. Inhalations.-A tobacco substitute with therapeutical properties is manufactured from eucalyptus or other leaves containing eucalyptol or piperitone by semi-drying the leaves, bursting the cell structure by rolling, macerating in an aqueous solution containing about 10 per cent of a hygroscopic substance such as glycerine and 10 per cent of a deflagrating substance such as saltpetre heating in a closed chamber to 100‹- 200‹ F., subjecting if desired to a pressure of the order of two tons per square inch in moulds heated to a point not above 212‹ F., and curing the compacted mass by ageing. Any liquor squeezed out in the pressing operation may be added to the macerating liquor for a subsequent batch.
Patent GB-733206-A (GB)
Title: Improvements in or relating to the manufacture of vehicle tyres
Inventor: BECKADOLPH RICHARD
IPC: B29D30/32
Filed: 1952-12-08
Abstract: 733,206. Building tyres. CONTINENTAL GUMMI-WERKE AKT.-GES. Dec. 8, 1952, No. 31073/52. Class 144 (1). Vehicle wheel tyres are made by the flat band process on a rotary building drum 1 the surface of which has a circumferential groove 10 at each end for locating the bead rings 19 after application of the tyre plies or bands 20 on the drum, the drum being radially expansible, one stage only, to stretch the band 20 into holding engagement with the bead rings 19 prior to folding of the end portions of the band over the bead rings by means of axially movable segmented drums 12 located one on each side of the building drum 1. As shown the surface of the building drum 1 comprises a plurality of segments urged radially inwardly by rubber-block springs 2 against an inflatable annular bag 5 supplied with pressure air via tubes 6, 7 extending through a shaft 4 on which the drum 1 is mounted. The ends of the drum 1 slope radially inwaidly from the locating grooves 10 to provide a cam surface for the adjacent ends of the cylindricallyarranged segments forming the ply-folding drums 12. The said adjacent ends, which are provided with stirrups to support helical springs 18 serving as stitching rollers, are spring-urged radially inwardly to maintain stitching pressure on the band 20 during the ply-folding process. The axially outer ends of the folding-drum segments are pivoted to bell-crank levers 13 operable by axially movable setting-rings 14 to move the axially outer ends of the folding- dium segments radially outwardly. Axial displacement of the folding drums also is effected by the setting-rings 14, each of which is connected by a biacket 15 to a separate pistonoperated rod 16. In operation the left-hand folding drum 12 is moved to the left away from the building drum, Fig. 2, to allow placing of the bead rings 19 in holders, not shown. This folding drum 12 is then moved back, ready to receive carcase plies or bands applied to the drum 1 to form the flat band 20 and the bead rings are sited over the drum grooves 10, Fig. 5. The building drum 1 is then expanded by inflation of the air bag 5 to unite the band with the bead rings 19, Fig. 6, and with drum 1 still expanded, the left-hand setting ring 14 is operated first to expand the axially outer ends of the segments of the folding drum 12, Fig. 7, and then to move the segments over the drum 1 to effect turnover, Fig. 8. The left-hand drum 12 is then retracted and the process repeated for the right-hand drum 12. In the construction shown, the folded end portions of the band 20 overlap in the centre region of the band and if desired a tread band, or additional plies may be wrapped round the band 20 before collapsing of the drum for removal of the tyre band.
Patent GB-536890-A (GB)
Title: Improvements in or relating to gas compressors
IPC: F04D29/46
Filed: 1939-11-30
Abstract: 536,890. Supercharging compressors. INGHAM,A. Nov. 30,1939, No. 31150. [Class 8(i)] [Also in Group XXVI] A part of the discharge from a single-stage compressor indicated diagrammatically at O may be byepassed by a valve S past an adjustable valve E, the high-pressure gas inducing inflow of gas through the inlet passage C and the mixed gases flowing to the compressor. The member A<SP>1</SP> in which the passage. C is formed is axially adjustable to vary the size of the return passage for the byepassed gas. Fig. 2 shows a modification in which the member A<SP>1</SP> is omitted and the low-pressure inlet gas is entrained through conically-disposed passages E<SP>2</SP> communicating with the bore of air adjustable inlet pipe H.
Patent GB-707647-A (GB)
Title: Copolymers of styrene and divinylbenzene
IPC: C08F2/20
Filed: 1950-12-21
Abstract: Copolymers of styrene and divinylbenzene are made by a suspension polymerization process which comprises polymerizing a mixture of styrene and divinylbenzene dispersed in an aqueous medium containing dispersed finely divided particles of bentonite, dissolved gelatin and a substantially neutral inorganic salt, such as potassium and sodium chlorides and sulphates, calcium chloride, and potassium thiocyanate.  The divinyl benzene may be in the form of a commercial concentrate which contains ethyl vinylbenzene, and which may also contain tertiary butyl catechol as an inhibitor. Polymerization is preferably carried out in the presence of a catalyst such as benzoyl peroxide, tert. butyl perbenzoate, azo-bisisobutyronitrile, and "Porofor" (Registered Trade Mark) 254.  The copolymers may be used for forming reflecting surfaces on road signs and kinema screens. The Provisional Specification describes also the suspension polymerization of styrene alone or together with compounds which contain a vinylidene group in the molecule in general.
Patent GB-663347-A (GB)
Title: Metallic inserts for pneumatic tires
IPC: B60C11/20
Filed: 1949-12-05
Abstract: 663,347. Pneumatic tyres. KIMES CORPORATION, H. E. Dec. 5, 1949 [Dec. 21. 1948], No. 31170/49. Class 144 (ii). Steel wire inserts 8 for pneumatic tyre treads are formed of U-shape with curved bases 11 and side-arms 9 extending to the tread, the medial portions 12 of the base parts being upwardly curved so that as the tread (i wears down. the base-parts of the inserts become severed to produce two relatively-small portions 17, Fig. 4, providing ultimate non-skid elements. The inserts may be formed in one continuous length; and, the wire may be replaced by strip metal which may be of corrugated form.
Patent GB-1042977-A (GB)
Title: Improvements in and relating to photographic cameras
IPC: G03B17/02
Filed: 1963-08-07
Abstract: 1,042,977. Photographic cameras. AGFA A.G. Aug. 7, 1963 [Aug. 10, 1962], No. 31221/63. Heading G2A. A photographic camera has one or more recesses in a detachable part 2, Fig. 1 (not shown) from the body 1 for the reception of one or more components, such as a view finder, range finder or exposure meter, the recess or recesses having a frame 3 which can be fixed by interlocking parts on the frame 3 and part 2 to the camera body when the part 2 is attached to the camera body 1. The part 2 may be attached to the camera body by screws 5 and 6. The interlocking parts may be lugs 3a Fig. 2 (not shown) on the frame 3 engaging slots 2a in the part 2. The frame may carry a transparent cover 4, lens or honeycomb lens.
Patent GB-1473355-A (GB)
Title: Sealing washer assembly
IPC: F16J15/10
Filed: 1974-07-15
Abstract: 1473355 Washers; joint making packing NATIONAL PLANT HIRE (PTY) Ltd 15 July 1974 [17 July 1973 19 July 1973 14 May 1974] 31279/74 Headings F2B and F2H A sealing washer assembly for use, e.g. with roofing nails 8, comprises a rigid washer 1 and a sealing washer 2 having a ridged formation for engaging the surface through which the nail is passed and a projection 12 passing through the washer 1. The bore 6 may have a diaphragm across it (not shown) for piercing by the nail or a ridge 4 may engage the nail to ensure sealing. Alternatively the bore may have one or more tapered portions, the narrow parts of which engage the nail. The portion 12 may be of expanded form to retain the washers assembled or may be a loose fit in the rigid washer and be compressed by the head of the nail, Fig. 7 (not shown). The washers 1, 2, may be each made up in latches joined at their edges by integral portions. The two batches can then be assembled in one operation and individual assemblies separated as required. Reference has been directed by the Comptroller to Specification 1,243,547.
Patent GB-605730-A (GB)
Title: Lubrication system
IPC: F16N11/04
Filed: 1945-11-21
Abstract: 605,730. Lubricating. FOOD MACHINERY CORPORATION. Nov. 21, 1945, No. 31301. Convention date, Oct. 19, 1942. [Class 12 (iii)] Lubricant, for example grease, is fed from a lubricant chamber to a point of use by means of a spring plunger 70 housed in a cylinder 61 mounted in the chamber, the rear side of which plunger is under vacuum whereby the feed remains unaffected by temperature changes, the vacuum being provided by so arranging that when the plunger is in the fully compressed position, Fig. 3, the space at the rear thereof is completely filled by the coils of the spring 65 being in contact with each other and by the core space within the same being filled by grease 90 (initially inserted before assembly of the plunger) or by a metal core 95, Fig. 5. Fig. 1 shows such a plunger and cylinder device located within a fixed hollow axle 11 on which a bogie wheel 10 of a military tank is mounted by means of ball-bearings 13, the outer sides of which are provided with seals 14 to prevent entry of foreign matter and to retain the lubricant. A grease charge is forced into the hollow shaft space through a non-return valve 83 so forcing back the plunger which subsequently feeds grease forward to the bearings as requirements arise during use. A safety valve fitting 59 prevents excess pressure.
Patent GB-892107-A (GB)
Title: Improvements in or relating to a method for the production of envelopes
IPC: B31B155/00
Filed: 1959-09-15
Abstract: 892,107. Making envelopes. WINKLER, R., and DUNNEBIER, K. Sept. 15, 1959 [Feb. 21, 1959], No. 31359/59. Class 94(2). A web of material 4, moving in the direction A, is cut into blanks for making envelopes along separating lines 4 which, instead of being straight, are curved at their ends in opposite directions R 1 , R 2 . The blanks are then moved in a direction C, at an angle to A, to a position II where the sharp lips at the alternate unrounded corners are cut off at 7, 8 so as to leave rounded corners r where the short edges merge with the edges 3, 5. At position III the corners 9 are cut out in usual manner to form the flaps and when the blank is folded into an envelope the corners of the resulting bottom, side and closing flaps thereof are rounded.
Patent GB-684289-A (GB)
Title: Improvements in or relating to hanger brick
IPC: F27D1/02
Filed: 1950-12-27
Abstract: 684,289. Furnace roofs. DETRICK CO., M. H. Dec. 27,1950 [March 8, 1950], No. 31377/50. Classes 51 (i) and 51 (ii). A substantially rectangular hanger brick for suspended refractory roof tiles has a grooved lower portion for supporting the tiles, the grooves 7 being provided at opposite ends of the brick, having divergent walls and gradually deepening at diagonally opposite ends so as to provide a rounded corner 11, 11 a, between the bottom of each groove and a side face of the brick.
Patent GB-683960-A (GB)
Title: Improved method of and means for applying fastening spikes to railway rails
IPC: E01B9/30
Filed: 1949-12-07
Abstract: 683,960. Securing railway rails. ELASTIC RAIL SPIKE CO., Ltd., and THOMPSON, H. E. Nov. 15, 1950. [Dec. 7, 1949] No. 31435/49. Class 104 (ii). In a method of fastening a railway rail a removable packing piece 6 is applied to the rail foot 2 and a spike 7 is driven into the sleeper 5 so that a resilient bent over arm 8 on the spike applies pressure to the rail foot 2 through the medium of the packing piece 6 but does not overlie the rail foot 2. As shown the packing piece 6 has a tongue 6d to bear on the rail foot 2, and has its side edges at one end tapered at 6f, 6g to facilitate entry between the walls 6a of a base plate 4 and the rail foot 2, and its upper edge tapered at 6h to lift the arm 8 when driven thereunder. The walls 6a of the base-plate 4 are inwardly bowed and the seating 3 is upwardly bowed transversely to the direction of the rail. On removal of the packing piece 6 the arms 8 bear on the rounded edges 3a of walls 4a to hold the base-plate 4 against the sleeper 5. When a base-plate 4 is not provided the undersides of the packing piece 6 has teeth to grip the sleeper 5.
Patent GB-1299960-A (GB)
Title: A drill, particularly a so-called deep hole drill or gun boring drill
Inventor: BOGSTEN ANDERS RICHARD
IPC: B23B51/04
Filed: 1970-06-29
Abstract: 1299960 Gun drills; making drills A R BOGSTEN 29 June 1970 [15 July 1969 1 Sept 1969] 31455/70 Headings B3A and B3C A gun drill has a cutter head 3 secured to a tube 1, and a second tube 2 inserted into tube 1 so as to form a channel 2d for supplying lubricants to the hard metal cutting tip 4, and a larger channel 2e for discharging the swarf. Head 3 may be omitted, whereupon at least one tip 4 is welded or soldered to tube 1. Head 3 may be screwed into tube 1. Second tube 2 Fig. 1 is formed by a series of dies or rollers, Figs. 3-5 (not shown), or the tube may be formed with a bulge (12b), Fig. 7 (not shown). The second tube may be of polygonal cross-section, and  the outer tube may have a non-circular crosssection.
Patent GB-1120410-A (GB)
Title: Preparation of polyvinyl chloride latices
IPC: C08F259/04
Filed: 1967-07-07
Abstract: Vinyl chloride is polymerized in aqueous emulsion in the presence of a seed latex which has a particle surface area in <\>pA2 per 100 c.c. of water of above 0.6 x 1022 to obtain a product of substantially uniform particle diameter, of between 0.4 x 1022 and 0.6 x 1022 to obtain a product with a narrow range particle diameter distribution and below 0.4 x 1022 to result in a product of wide range particle size. Formulae are given for the calculation of particle surface area and of the amount of emulsifier (sodium lauryl sulphate) necessary at any time to just cover the surface of the particles, which amount should not be exceeded.  Potassium persulphate is used as catalyst.
Patent GB-618351-A (GB)
Title: Improvements in resilient surfaces for chairs or the like
IPC: A47C7/32
Filed: 1946-10-24
Abstract: 618,351. Spring upholstery. HELLER, M. Oct. 24, 1946, No. 31581. [Class 52 (iv)] A centrally positioned inextensible plate - like member a is supported by oppositely arranged tensioned springs b extending directly to the corners of a rectangular frame, or a rectangular area thereon, at least two of the springs at each corner radiating divergently therefrom to the central member. The space around the central member may be filled by cords e, springs, chains, or other flexible elements.