baber/WOPTO huggingface dataset:
Patent GB-1453995-A (GB)
Title: Emergency ignition device for thyristors
IPC: H02M1/088
Filed: 1974-03-28
Abstract: 1453995 Protecting converters B B C BROWN BOVERI & CO Ltd 28 March 1974 [30 March 1973] 13833/74 Heading H2F [Also in Division H3] A thyristor T 1  has an auxiliary firing circuit comprising a semi-conductor rectifier, e.g. auxiliary thyristor HT 1 , connected between cathode and gate with its gate and cathode connected so that in the absence of a normal firing pulse, the auxiliary thyristor breaks down to provide a firing pulse if the voltage across the thyristor T 1  exceeds a given value. The arrangement is particularly suitable for protecting series connected thyristors. The voltage at which protection is effected may be altered by connecting a plurality of auxiliary thyristors in series or by connecting a zener or avalanche diode in the auxiliary circuit.
Patent GB-942491-A (GB)
Title: Preparation of paraffin hydrocarbons of the cí¬c range
Inventor: SCHNEIDER ABRAHAM
IPC: C10G35/00
Filed: 1961-04-17
Abstract: Isoparaffins in the C4-C7 range are obtained from a saturated hydrocarbon feedstock containing paraffins having at least 8 carbon atoms and 10-90% by wt. (based on the total) of C7-C9 monocyclic naphthenes by contact at 0-100 DEG  C. with aluminium bromide, hydrogen bromide and hydrogen under a partial pressure of 25-500 p.s.i. for a time sufficient to convert at least a major portion of the feed to C4-C7 paraffins.  The aluminium bromide catalyst may be homogeneous, being dissolved in the feed, or heterogeneous, being a preformed complex obtained by reaction with HBr and a C7+ paraffin. In the former case the product is distilled to recover product and a solution of catalyst in naphthenes which may be reused; in the latter case the catalyst is separated by decanting and reused. Dissolved aluminium bromide is used in amounts of 20-200% by weight of hydrocarbons together with at least 0.25% by weight of hydrogen bromide, based on hydrocarbons, e.g. at a partial pressure of 10-20 p.s.i.  If a complex is employed this is used in a weight ratio to hydrocarbon between 1 : 10 and 10: 1.  The complex is formed using at least 5 mols. of paraffin per mol. of aluminium bromide and passing HBr into the mixture at room or elevated temperature until the milky appearance disappears. Naphthenes higher than C7-C9 may be present; C12+ naphthenes also result in C4-C7 paraffin products.  The reaction time may be 1 minute to 60 hours depending on the temperature.
Patent GB-315941-A (GB)
Title: Improvements in or relating to spring columns, buffers and like shock-absorbing or cushioning devices
IPC: F16F3/04
Filed: 1928-05-11
Abstract: 315,941. Steffen, F. May 11, 1928. Metallic springs of the kind in which end thrust is applied to columns formed by radially expansible and compressible helical springs surrounding a split ring or sleeve are constructed so that the helical spring is coiled externally or internally around or within more than one split ring. In the buffer shown in Fig. 5, two expansible helical springs 4 are each coiled around several split rings with conical engaging surfaces which ensure expansion of the springs when the buffer is compressed. A volute spring 8 takes the first impact and a stop 13 limits the amount it is compressed. Split cylindrical sleeves of a softer metal may be interposed between the spring and the split rings. Various similar constructions are shown, including some in which the helical springs are arranged inside the split rings.
Patent GB-109997-A (GB)
Title: Beet Harvesting Machine.
Inventor: JENSEN THORKILD VALDEMAR
IPC: A01D23/04
Filed: 1916-10-02
Abstract: 109,997. Jensen, T. V. Oct. 2, 1916. Addition to 100,963. Crops, root, digging and topping machines for. -The carrying arms k of the beet-harvester described in the parent Specification are formed with forked branches a, b, the beets being held in these branches by correspondingly forked branches c pivoted to the arm k and carrying cam rolls f engaging a cam rail g. A compression spring h causes each fork c to be pressed back to release the beet at the ejecting point of the cam rail g. The rail g may be formed by a stretched steel band or a circular wire. The beet crests are cut off by an arched cutter e<1> adjustably mounted on a plate f<1> and adapted to be rotated to cut the crests by a pinion on its shaft engaging teeth on the plate carrying the arms k.
Patent GB-1122679-A (GB)
Title: Process for producing a mixture of hydrocarbons to be taken orally
IPC: A61K35/02
Filed: 1966-03-30
Abstract: A mixture of hydrocarbons suitable for oral administration, e.g. in treatment of carcinoma, is prepared by distilling a naturally occurring hydrocarbon oil to obtain a fraction boiling up to 150 DEG C., and then fractionally distilling this to yield a fraction of b.p. 100-140 DEG  C., preferably 115-135 DEG  C.  The fractional distillation may be carried out in the presence of flax seed, and the mixture may be refined by acid treatment (e.g. H2SO4), followed by alkali treatment to remove the acid, and finally by filtration through active charcoal.ALSO:The treatment of carcinoma is carried out by oral administration of a mixture of hydrocarbons obtained by distilling a naturally occurring hydrocarbon oil to obtain a fraction boiling up to 150 DEG C, and then fractionally distilling this to yield a fraction of b.p. 100-140 DEG C, preferably 115-135 DEG C. The fractional distillation step may be conducted in the presence of flax seed, constituents of which are distilled over with the hydrocarbon mixture.  The mixture may be refined by acid treatment (e.g. H2SO4) followed by alkali treatment to remove the acid, and finally by filtration through active charcoal.  The mixture may also contain a quaternary ammonium compound (e.g. trimethyl glycocoll, trimethyl glycocoll citrate or muscarin), colloidally distributed metallic iron or nickel, and mellitic acid or a salt thereof.
Patent GB-730350-A (GB)
Title: Power-operated powder-distributor
IPC: A01M9/00
Filed: 1953-05-19
Abstract: 730,350. Plant-dusting machines. HUDSON MANUFACTURING CO., H. D. May 19, 1953 [Feb. 24, 1953], No. 14059/53. Class 6 (1). A tractor-mounted and power-driven powderdistributor comprises a hopper 10 having a rounded base portion housing a spiral agitator 20 for feeding the powder to outlets leading to a fan casing 52, wherein the outlet apertures are adjustable and the fan 49 and agitator are mounted on concentric shafts 43, 23 and are driven at different speeds by a common drive-shaft 33. The hopper is roughly oval in transverse cross-section and has flat end faces, in the rear one of which is located'the outlet comprising a series of holes covered by a rotatable diaphragm carrying corresponding holes which may be placed wholly or partly in register by rotation of the diaphragm through levers 67, 65 interconnected by a shaft 66. The fan casing has radially-arranged outlets 54 which are connected by flexible pipes to nozzles on a transverse boom. The apparatus is mounted on brackets attached to the rearaxle casing of a tractor and the drive-shaft 33 is connected by universal joints to the power take-off. Pulleys 48, 32 on the shaft 33 are connected to pulleys 46 28 on the shafts 43, 23 respectively. The belts 47, 31 connecting these pulleys may be tightened by raising the hopper, through' adjusting-screws 17. The hopper has a cover 11, and is secured adjustably to brackets 16 forming part of the supporting structure.
Patent GB-252094-A (GB)
Title: Improvements in or relating to sighting and aiming devices for sporting guns and rifles
IPC: F41G1/02
Filed: 1925-05-29
Abstract: 252,094. Knight, A. W. May 29, 1925. Sights.-A sporting gun or rifle in which the barrel wall is thinner at the muzzle than at the breech, is provided at the muzzle with a foresight adapted to compensate for this difference, and so prevent shooting high, comprising studs or a horizontal bar the top edge of which is at the same height from the axis of the bore as the outside of the chambers. As shown in Fig. 1, studs a<1> are formed on a ring a adapted to fit over the muzzle. In the construction shown in Fig. 5, studs a' are carried by two clip members a adapted to fit over the two barrels of a doublebarrelled gun. In a modification, Fig. 7, the device comprises a bar having two flat portions c<1> between which is sunk the usual sight c<2>. The centre rib e is reduced in thickness towards the muzzle so that the marksman can see below the bar.
Patent GB-401722-A (GB)
Title: Improved method and apparatus for releasing the pressure upon viscous liquids containing solid matter in suspension
IPC: C10G1/06
Filed: 1932-05-18
Abstract: <PICT:0401722/III/1> Pressure is released upon liquids containing solids in suspension, e.g. the liquid products of the destructive hydrogenation of carbonaceous materials, by allowing the liquid to flow from the pressure chamber through a relatively long constricted passage formed by a channel or groove at the interface between a cylinder and a cooperating piston, the cylinder and piston being normally stationary.  A high pressure cylinder 1 having inlet and outlet ports 2, 3 and water jackets 7, is provided with a piston 4 having a helical groove 5.  The piston may be displaced axially by a hand screw 6 so that the length of the path traversed by the liquid may be adjusted according to the reduction of pressure required or the amount of wear sustained by the grooves.  Specifications 230,205 and 264,333, [both in Class 69 (ii), Hydraulic presses &c.], are referred to.
Patent GB-227358-A (GB)
Title: Improvements in distributors for artificial manure
IPC: A01C15/16
Filed: 1924-06-11
Abstract: 227,358. Twose, E. V. June 11, 1924. Manure distributors.-In machines having a roller for discharging the manure through the hopper outlet, an adjustable slide for controlling the outlet, and a reciprocating comb for cleaning the roller, a reciprocating toothed bar is provided for agitating the manure in the hopper and a second roller for feeding it to the discharge roller, the arrangement being such that the discharge does not take place between the rollers. The reciprocating cleaner may be made reversible, or may be replaced by an endless chain. The slide g for controlling the hopper outlet is adjustably connected by link rods g<3> to two connected bellcrank levers operated by an hand-lever. The surfaces of the washers and bracket through which each link rod g<3> is connected to the slide g are rounded to allow of oscillation. The reversible cleaner comb h rests on the discharge roller f and is provided with two sets of teeth h<1>, h<2> of different width and pitch. It is reciprocated by a crank on a shaft that is driven by bevel and spur gearing from a spur wheel on the shaft of the roller f. The toothed agitator bar i is arranged. with its teeth depending in front of the discharge orifice e and is reciprocated by a second crank on the shaft l. It is carried by pins s mounted in blocks sliding in slots in the back of the hopper a. The additional roller j is rotated in the same direction as the discharge roller f and at a different peripheral speed. It is driven by a worm on the shaft l, and may be of larger or smaller diameter than the roller f, which is driven from one of the travelling wheels by spur gearing.
Patent GB-683159-A (GB)
Title: Improvements in devices for cooling liquid
Inventor: DIAPER MELVILLE ALEXANDER
IPC: F28D7/02
Filed: 1950-06-07
Abstract: 683,159. Coaxial tubular heat-exchangers. HIBBERT & CO., Ltd., C. G. May 30, 1951 [June 7, 1950], No. 14225/50. Class 64 (iii) In a device for cooling liquid, an outer cylindrical shell 1, open at one end 2 and having apertures 6 in the other end, receives axially an inner shell 8 through the open end, the shells being held together by a stud 13 and nuts 14, so that an annular chamber 9 is formed between them. Furthermore, a flange on the inner shell seals the open end of the outer shell, the annular chamber is formed into a helical liquid passage (having an inlet 16 and an outlet 17 for the liquid being cooled) and the coolant liquid is admitted to the inner shell, the apertures 6 opening into this shell and a liquid seal being formed between the apertures and the annular chamber. The stud 13 passes through a central hole 4 in a spider, Fig. 2 (not shown) on the inlet end of the outer shell and through a hole 12 of the closed end of the inner shell. Openings may be provided in the closed end 11 of the inner shell so that coolant liquid may circulate through the interior. As shown, ridges 8a formed by a helical groove on the inner shell 8 abut against the inner surface of the outer shell, but the helical passage may be formed by a groove on the inner surface of the outer shell 1. In operation, a pipe leads the liquid to be cooled to the inlet 16 and the device is placed in a bath of brine which not only cools the outer surface but also flows through the apertures 6 into the inner shell 8.
Patent GB-494661-A (GB)
Title: Improved hard metal alloys and tools and working parts made therefrom
IPC: C22C29/06
Filed: 1938-05-12
Abstract: A hard metal alloy comprises more than 30 and less than 50 per cent of one or more metals of the iron group, 2-10 per cent of chromium, the remainder consisting of titanium carbide and tungsten carbide in a ratio between 1 : 2 and 1 : 0,5.  At least two metals of the iron group, one of which is iron itself, may be present, and bodies formed of the metal may be hardened by heat-treatment, for example by heating to 1000-1200 DEG  C. with subsequent quenching in oil.
Patent GB-317387-A (GB)
Title: Improvements in and connected with advertising and like signs
IPC: G09F13/14
Filed: 1928-05-15
Abstract: 317,387. Jacobs, H. P. May 15, 1928. Name and number plates.-The characters of a sign, of the type formed by a series of inclined strips which may be fixed or reversible by hand or mechanically like the slats of venetian blinds, and are also set so that light emanating from a point outside the sign is reflected to the observer although the angle of the general plane of the slats is such that the display matter would not be visible on a plane surface, are made to stand cut clearly by the contrast between light-reflecting and non-neflecting portions of the strips produced by applying coating-material to the strips. Fig. 3 shows a double-sided sign composed of two sheets of polished metal 10 bent to a sinuous form and covered by transparent or translucent sheets 11. The assembled sheets fit into a metal frame with a slide-on lid 13. The letters or the like have non-redecting surfaces and may be formed on individual slats or one letter may extend over several slats. In a modified construction separate fixed slats are used to form a onesided sign. Figs. 5 and 6 show a series of separate slats 14 with advertising matter on both sides. Each slat is pivoted to the casing at 16 and has a pin-and-slot connection 19 with a sliding rod 18 operated by a clockwork motor 22.
Patent GB-409905-A (GB)
Title: Improvements in or relating to amusement apparatus
IPC: A63G7/00
Filed: 1933-12-19
Abstract: 409,905. Roundabouts. LAKIN, R. J., Besley Street, Streatham, London, and THURSTON, C. W. R., 60, Ketts Hill, Norwich. Dec. 19, 1933, No. 14331. [Class 132 (i).] Amusement apparatus of the kind in which passenger-carrying cars or the like are horizontally and independently movable on a travelling support, and the supports are driven over a circular undulating track by radial arms rotatable about a central vertical axis and having their outer ends guided by the track, whereby the undulations of the track tilt the supports and impart individual horizontal movement to the cars in addition to their up- and -down movement, is provided with brake mechanism for arresting the individual movements of the cars at will. As shown, the base 10, which has a drawbar 11, carries an electric motor 12 driving through gearing 13-16 a pinion 17 meshing with the annular gear 18 having rollers 19 running on a rail 20 supported on a structure 21 carrying at the top an annular platform 22. The gear 18 is supported against forces in a horizontal plane by rollers rotatable about a vertical axis and bearing against a rail supported by the structure 21. Radiating from the gear 18 are a plurality of girders 25 each connected to an upper annular extension of the gear 18 by knuckle-joints 26. Each girder 25 has at its outer end an axle 27 carrying a wheel 28 running on a circular undulating track 29 supported by framework 30. The radial girders 25 support an annular segmented floor 36, and each girder carries a drag-link connected to the flooring. Each pair of girders supports a circular rail 35 at the centre of which is a vertical axle 38 passing through the flooring 36 and through the base of a car 39, each of which has two wheels 40 bearing on the appropriate rail 35. Brake mechanism for the cars comprises a ring 41 forced upwards against the bottom of the car by a lever 42 connected by a cable 43 to a hand control 44, there being preferably one control 44 for each pair of cars.
Patent GB-474352-A (GB)
Title: Improvements in collapsible tubes for fluid or semi-fluid substances
IPC: B65D35/12
Filed: 1937-05-24
Abstract: 474,352. Collapsable tubes. SABATTIER, C. F. G. May 24, 1937, Nos. 14341 and 14342. Convention dates, Aug. 21, 1936 and April 23, 1937. [Class 66] The body of a collapsable tube consists of a tubular sheath of textile fabric, which may be embroidered or other wise ornamented, woven in one piece and rendered waterproof by sizing, impregnating, or metallizing, the outer surface being given a protective coating if desired. The ends are closed, at least one of them by a closure provided with a delivery orifice, such as the closure 5, 6, between the two-parts of which the end of the sheath 7 is gripped.
Patent GB-128466-A (GB)
Title: Improvements in or relating to Sterilizing Apparatus for Medical and Dental Purposes also applicable for other purposes.
Inventor: CAPON ROBERT MAW
IPC: A61L2/26
Filed: 1918-09-04
Abstract: 128,466. Capon, R. M. Sept. 4, 1918. Lamps combined w i t h sterilizers; supporting.- Medical &c. sterilizing apparatus comprises a receptacle 1 for cold liquid; and a framework 2, 3, 4, mounted on the receptacle and carrying at the lower part a spirit lamp 8 and at the upper part a sterilizing pan 9. The container of the lamp 8 fits within a socket 3<1> depending from the disk 3 of the framework into the receptacle 1 and is fitted with pro. jections 7 which pass through slots 6 in the disk so that the container may be turned to secure it in position.
Patent GB-898671-A (GB)
Title: Improvements in or relating to the heat treatment of filaments, fibres, threads, films and sheet material
Inventor: DOLEMAN JACK
IPC: F26B13/10
Filed: 1958-05-06
Abstract: 898,671. Fluidized beds for heating sheet or filamentary materials. BRITISH RAYON RESEARCH ASSOCIATION. April 30, 1959 [May 6, 1958], No. 14426/58. Class 64(2) Filamentary or sheet material 22 is passed vertically by rollers 29 down from a bed of ballotini (100-1000 microns) fluidized in a container 12 by air passed up through a succession of throats 17, 20 and heated by tubes, Figs. 3, 4 (not shown), in the container 12 and containing steam or electric heaters. To impede the horizontal movement of the ballotini, there are horizontal baffles arranged louvre-fashion as in Specification 848,676 adjacent the material 22 in the bed. If sheet material or a row of filaments is to be heated, the throats and the chambers 14 between them are in the form of slots but if a single filament is heated they are of circular section. The throats 17 get successively narrower in the downward direction except for the lowest throat 20 which is at least as wide as the top throat 17. The lowest of the throats 17 is adjustable, one side of the chambers 14 on either side of the throat being formed by a damper 26 with flexible extensions 27. This throat is closed when the container 12 is being filled with ballotini and is opened when the fluidizing air is turned on. It closes automatically when the air is turned off. Air for fluidizing is introduced to each of two headers 23 through a pipe 24 and as in Specification 848,677 is passed to the throat 20 up through each of two slits 25 flanking an outlet 21 for the material 22. Instead of there being slits 25, formed as in Specification 848,677, extra fluidizing gas may be introduced into the chambers 14. An air box A is formed below the headers 23 by the two halves of the airfeed and roller assembly and is sealed by the rollers 29 and seals S. The material may be passed upwardly through one part of a fluidized bed and downwardly through another part of similarly through two beds, Fig. 4 (not' shown), or a succession of beds. The Provisional Specification describes also apparatus in which one of the upper throats is closable and in which gas diverted through or past the material outlet as in Specification 848,677 need not be the fluidizing gas. Specifications 773,598, 800,091, 814,526 and 838,784 also are referred to.
Patent GB-606117-A (GB)
Title: Method of recovering hard metal carbides and bond metals from sintered masses
IPC: B22F9/16
Filed: 1945-06-07
Abstract: Hard metal carbides are recovered from a sintered mass of such material with a bond metal by heating the mass to a temperature greater than 1700 DEG  C. in a non-oxidising and caused to swell and crack and become porous.  The mass is then treated with an acid, preferably heated to its boiling point, to completely permeate the mass and dissolve out the bond metal.  The resultant mass of hard-metal carbide may then be subjected to mechanical reduction.ALSO:Hard metal carbides and bond metals are recovered from a sintered mass of such materials by heating the mass to a temperature greater than 1700 DEG C. in a non-oxidizing atmosphere, and preferably in a reducing atmosphere, until the mass is caused to swell and crack and become porous.  The mass is then treated with an acid, preferably heated to its boiling point, which acid permeates the porous mass, whereby the bond metal is dissolved. The resultant mass of hard metal carbide may then be subjected to mechanical reduction.
Patent GB-257982-A (GB)
Title: Improvements in or relating to the primer chambers of ammunition cartridges
IPC: F42C19/10
Filed: 1925-06-04
Abstract: 257,982. Schauerte, G. W., and Olin, J. M. June 4, 1925. Gun cartridges. - The metallic end wall 9 of a primer chamber 5, Fig. 2, is perforated as shown at 11, 12, Fig. 3, and then substantially closed, as shown in Fig. 4, by a compression operation which simultaneously weakens the metal, enabling it to be burst open by the flash from the primer charge.
Patent GB-592079-A (GB)
Title: Improvements relating to fastenings for linen and like collars
IPC: A41B3/04
Filed: 1944-07-31
Abstract: 592,079. Collars for personal wear. LEE, T. H. July 31, 1944, No. 14578. [Class 141] [Also in Group XXV] A collar is attached to a shirt neckband by means of a resilient fastening strip adapted to pass through pair of openings, slots or loops provided on both the collar band and the shirt neckband. A. fastener c of the shape shown, is positioned between the band and the turn down portion of the collar. The arms pass through slits b, b<1> in the band portion and slots d, d<1> in the shirt neckband, the latter slots being positioned slightly farther apart than the former. Instead of slots, the neckband or collar band may be provided with pockets or loops for the reception of the arms of the fastener, and an open-ended pocket may also be provided for the middle portion of the fastener.