baber/WOPTO huggingface dataset:
Patent GB-1473609-A (GB)
Title: Vacuum devices
IPC: H01H11/00
Filed: 1975-03-12
Abstract: 1473609 Soldering VACUUM INTERRUPTERS Ltd 5 March 1976 [12 March 1975] 10325/75 Heading B3R In a method of hermetically solder sealing an envelope 1 of an electrical device (e.g. a vacuum interruptor or a vacuum spark gap), the envelope is supported in a vacuum furnace, an element (e.g. a steel ball 9) at least partly of ferromagnetic material is supported magnetically by a magnet and or, as shown, a pole piece 8 attached to a magnet 7 above an orifice 5 in a wall 4 of the envelope, the element e.g. at 10 and/or the wall around the orifice being coated with alloy (e.g. Sn/0À1-5% Sb), the furnace is evacuated and heated e.g. at 450-500‹C), to degas the envelope and melt the solder and finally the temperature at the furnace is raised to above the Curie Point of the magnet and/or the pole piece (e.g. 520‹C), to allow the element 9 to fall into the orifice and to form on cooling a hermetic seal. The orifice may be a 20-160 degree core having a circular opening 6.
Patent GB-399816-A (GB)
Title: Improvements in or relating to the manufacture of aqueous finishings and body colours
IPC: C09B67/24
Filed: 1932-04-11
Abstract: Ammonium or mixed ammonium alkali metal salts of acid or substantive dyes with or without the addition of urea are added to aqueous finishings or body colours.  Aqueous finishings are aqueous solutions of casein, shellac, tragracanth, carragheen, methyl cellulose or like colloidally water soluble substances. Body colours are the said aqueous finishings together with a pigment such as red iron oxide or alkaline earth metal salts of dyestuffs containing sulphonic groups or the like.  The following types of dyes may be used: mono- and polyazo dyestuffs, nitrodyestuffs, dyestuffs of the di-and tri-aryl series, pyronine dyestuffs, anthraquinone dyestuffs, oxazine, thiazine. safranine and indoline dyestuffs and the heavy metal compounds of these dyestuffs forming heavy metal complex compounds, such as copper or chromium compounds.  The ammonium salts may be prepared in such a manner that the dyestuff acids which may be precipitated by means of a mineral acid such as hydrochloric acid from a dyestuff solution are freed from water-soluble inorganic substances.  In an example, the dyestuff obtained by coupling tetrazotized diaminostilbenedisulphonic acid with phenol and alkylating is dissolved in water and acidified with hydrochloric acid.  The dyestuff which separates is kneaded with ammonia, urea added if desired, and dissolved in water and mixed with an aqueous solution of casein.  The following dyestuffs may be used: Orange II, Metanil Yellow, Anthracene Chrome Brown D, Brilliant Croceine M, Benzoform Orange G, and Benzoform Brown 4R, Chrysophenine G, Benzo Chrom Brown G, Benzo Brown B, Direct Deep Black E extra, Acid Green GG extra, Erioglaucine A, Xylene Blue AS, Acid Violet 4RSN, Acid Violet 6B, Sulpho Rhodamine B, Fast Acid Violet B, Chromorhodine B, Flaveosine, Thiazol Yellow R, Rosinduline G, Induline B, Naphthazine Blue, Nigrosine B, Gallocyanine MS, Gallo Chrome Blue B, Indochromogen S, Acid Alizarin Blue GR, Alizarin Saphinol SE, Alizarin Green X paste, Alizarin Astrol B, G, Alizarin Viridine DG, FF, Indigotine P, Supramine Brown G, the azo dyes salicyclic acid \sM benzidine --> 1 - (3<1> - sulphophenyl) - 3 - methyl - 5 - pyrazolone, 3 - chloro - 2 - toluidine - 5 - sulphonic acid --> aniline --> 2-benzoylamino-5-hydroxy-naphthalene-7-sulphonic acid, the urea compound of reduced 5-nitro-2-anisidine-4-sulphonic acid --> 2 - hydroxynaphthalene - 6 - sulphonic acid or its complex copper compound, --> Salicyclic acid benzidine --> 1-naphthylamine-6-(7)-5-sulphonic acid --> salicyclic acid, --> (alkaline) phenol benzidine --> (acid) 1-amino-8-naphthol-3 : 6-disulphonic acid \sM (alkaline) p-sulphanilie acid, m-phenylenediamine - N - monoethanesulphonic acid (alkaline) \sM benzidine --> (acid) 1-amino-8-naphthol-3 : 6-disulphonic acid \sM (alkaline) p-sulphanilic acid and the triarylmethane dye of the formula <FORM:0399816/IV/1> (prepared according to German Specification 293,352).
Patent GB-878001-A (GB)
Title: Improvements in or relating to rotary leather treating machines
IPC: C14B1/30
Filed: 1960-03-24
Abstract: 878,001. Leather-working machinery. RIZZI & C., L., S.p.A. March 24, 1960 [Sept. 21, 1959], No. 10417/60. Class 76. [Also in Group XXIX] A device for adjusting the working thickness in rotary leather-working machines comprises supporting rollers and transporting rollers for the skins and an operating roller carrying the tools for the processing of the skins and an hydraulic servo-control comprising hydraulic jacks controlled by a valve which in turn is actuated by an adjusting member for registering the distance between the axis of the supporting roller and that of the operating roller to a predetermined value, and to keep that value unvaried depending on the position of the adjusting member. In a preferred embodiment the skin being processed is supported on a roller 3, Fig. 4, and a roller 4 transports the skin. On the periphery of an operating roller 5 are mounted radially the tools 6 which may be knives. Roller 5 is supported in holders (of which one only, 15, is shown) which are fulcrumed at a point 18. In operation, fluid under pressure is passed through a conduit 28 and causes the piston 21 of the jack 22 in the chamber 30 to rise thereby lifting up the bed 19 which carries one or more rotary rollers 20, by action against the fulcrum the roller 5 is pressed against the skin 13. At the same time pressure builds up at the bore 34 of the conduit 28 against the cylinder 24 which is initially closed by the piston 25 as the pressure increases the whole of the cylinder head moves slightly as a result of rotation round the fulcrum 18 and then pressure is transmitted through the slightly opened bore 34 and out through a conduit 29. In order to bring the roller 5 closer to the roller 3, the screw 32 is displaced away from the cylinder manually. An independent compensation for the wear of the tools is provided by an arm 35 of a double lever oscillating around a pin 37 carried at the upper end of the bracket 15. The other arm 36 of the double lever carries at its end a small roll 38 which rests on the periphery of a disc 39 which undergoes the same sharpening action as the knives and therefore maintains the same diameter. Accordingly the working thickness is kept unvaried. The weight action of the jacks may be replaced by spring loading.
Patent GB-669913-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D04B17/04
Filed: 1949-04-20
Abstract: 669,913. Sewing-machines. CULLINANE, W. J. March 30, 1950 [April 20, 1949; April 22, 1949; June 14, 1949], Nos. 10514/49, 10771/49 and 15834/49. Class 112. Chain-stitching with eyed needles; lock-stitching with eyed needles and shuttles.-A sewing-machine required for use successively with different threads, particularlyforfastening-off repaired ladders in stockings, is provided with interchangeable needle-bars which can be readily moved into or out of operative position and coupled to or disconnected from operating mechanism; the needlebars preferably carry their respective thread bobbins and tension and thread-pulling devices. The needle-bars may be removable from the machine or may be mounted in a carrier which can present any one of them to the operating mechanism; in a lock-stitch machine interchangeable shuttles are correspondingly provided. In the embodiment shown, a needle-bar carrier in the form of a channel member 17 with extensions 19 sliding in the top and bottom of the open frame head 8 is reciprocated by a crank-pin on the usual main shaft of the machine engaging a groove in the back of the carrier. Each needle-bar 18, carrying its needle, thread-spool 38, and tension device 39, can be inserted into the channel of the carrier 17 and held therein by spring-pressed pivoted latches 23, of which one or more may engage a notch or notches in the needle-bar to locate it and hold it securely; the latches are released by turning a rod 29 carried in a bore in the carrier 17 and having a cam portion between projections on the latches. The needle-bar also carries a forked thread-pulling member (not shown), of which the prongs pass on either side of a fixed pin 41 to draw off a loop of thread from the spool as the needle descends. Several needle-bars, and, in a lock-stitch machine, the corresponding shuttles, may be carried on a cage mounted on a vertical shaft rotatable in the base of the machine to bring the required needle-bar, with its shuttle if such is used, into position for connection to the operating mechanism. According to the first Provisional Specification, a ratchet-driven toothed wheel may be provided to feed the work. The third Provisional Specification describes a take-up comprising a disc carried on the needle-bar and rotated, as the needle-bar reciprocates, by engagement of a roller on the disc with a horizontal guide on the frame ; the disc carries two diametrically opposed thread-engaging pins. The needle-bar may have an enlarged hollow upper end to receive a thread spool with its axis vertical, a spring on the side of the hollow portion holding the spool down and frictionally resisting its rotation to tension the thread.
Patent GB-1496748-A (GB)
Title: Electrostatic image enhancement method and system for use in electron radiography
IPC: G03G15/054
Filed: 1976-03-16
Abstract: 1496748 Electro-radiography XONICS Inc 16 March 1976 10532/76 Heading G2H In a method of electron-radiography a charge image is formed on a dielectric receptor in the usual exposure chamber but before development the receptor sheet is subjected to an ion discharge while being maintained at a bias potential to discharge selectively those areas having a charge density higher than a threshold level determined by the bias potential, thereby reducing the contrast in those areas. The bias potential is preferably a combination of a D.C. voltage and a high A.C. voltage.
Patent GB-797914-A (GB)
Title: Improvements relating to coupling grooves in conduits and to methods of rolling suchgrooves
IPC: B21D17/04
Filed: 1956-04-06
Abstract: 797,914. Rolling. VICTAULIC CO. OF AMERICA. April 6, 1956 [Nov. 14, 1955], No. 10645/56. Class 83 (4). [Also in Group XXVIII] In a method of rolling external grooves 70, Fig. 4, on pipes 47 for the attachment of couplings, an internal backing roll 46 is radiused at 64 near the rounded corners 51 of the groove forming ring 50 on the external roll 45, Fig. 1, so that the thickness of the wall is maintained in the bend region where the metal is subjected to shear forces and arranged so that the flow of metal into the groove produces an inclined annular region 72 on the outer surface. The internal roll 46 has the annular relieved regions 64 opposite radiused edges 60 of the ring 50 so that the region 71 of the pipe 47 has the same thickness as unworked length. Flat annular regions 67 may reduce the thickness slightly near the edges of the groove 70 and a recessed central portion 68 permits a flow of excess metal to increase the thickness at the middle region 73 of the groove. In apparatus suitable for rolling grooves, the rolls 45, 46 are mounted on shafts 9, 10 in a housing 1. The shaft 10 of the upper roll 45 is mounted in a pivoted bearing 15 at one end and in a vertically slidable bearing 19 near the opposite end and is adjustable in position to vary the roll pass by a screw jack 25 acting against roll separating springs 24. A projecting flange 76 on the upper roll engaging between flanges 77, 78 on the lower roll maintains the correct axial relationship between the rolls and the flange 77 further acts as a locating stop for the end of the tube 47. Gears 35, 37 interconnecting the shafts 9, 10 have teeth 39 which extend radially sufficient to prevent the gears from coming out of mesh when the rolls are separated. Specification 149,381, [Class 91 (i)], is referred to.
Patent GB-153846-A (GB)
Title: Improvements relating to the lubrication of bearings
IPC: B61F17/22
Filed: 1920-04-16
Abstract: 153,846. Holtorp, W. April 16, 1920. Gravity-feed and capillary-action lubricating; lubricant conveyed by mechanical means. - To lubricate a single bearing bush for locomotive and wagon axles &c., lubricant is supplied from a reservoir 3, Fig. 1, to grooves in the bush 2 and after being carried round by the axle, is caught by the edges of a spring-pressed shoe 7. These edges transfer the lubricant to chambers 4, 4<a> from which it passes into a groove 5, and is drawn by suction of the axle through holes 6 into grooves in the shoe. The lubricant is then forced through pipes 10 to the reservoir 3. Spring- pressed felt pads at each side of the shoe communicate with an oil-chamber 18. A wheel 35, Fig. 5, rotated by the axle, raises oil from the chamber 18. Fig. 7 shows a modification for wagon axles, in which oil is sucked up through holes in a shoe 30 held against a collar 28 by spring 29, and is also raised by a wheel 35. From grooves in the shoe the oil passes through pipes 33 to gutters at the sides of a felt pad 27 carried by a spring-pressed metal plate 26. The oil carried across the pad by the axle overflows from one of the gutters according to the direction of rotation.
Patent GB-235687-A (GB)
Title: Improvements in chassis lubrication
IPC: B60R17/00
Filed: 1924-04-30
Abstract: 235,687. Bijur, J. April 30, 1924. Drawings to Specification. Connecting fixed lubricators with moving apparatus. - Lubricant is conveyed from the chassis of a vehicle to the steering knuckle by a transverse conduit having hinging mounts at the frame and knuckle ends, the hinging mounts being arranged to accommodate steering movements, while the conduit is constructed to accommodate variations in the distance between the mounts. From. the knuckle, the lubricant is conveyed to the various bearings associated therewith. The conduit may comprise a telescopic pipe arrangement, or may be a flexible pipe. In the latter case, the joint at the knuckle end may be a horizontal swivelling or hinging joint mounted adjacent the king pin on the axle, the oil passing to the knuckle across the king pin bearing surface. At the frame end of the conduit, the hinge may be a flexible arrangement comprising a helically, spirally or otherwise disposed conduit.
Patent GB-623153-A (GB)
Title: Improvements in cutters for milling threads and grooves
IPC: B23G5/18
Filed: 1947-04-22
Abstract: 623,153. Milling-cutters. BRAYSHAW FURNACES & TOOLS, Ltd., BRAYSHAW, S. N., and MAGUIRE, T. April 22, 1947, No. 10721. [Class 83 (iii)] A cutter for milling threads or grooves is formed with two sets of teeth A, B, spaced alternately around it, the serrations a, b on the teeth agreeing in pitch with the thread or grooves to be cut, and each serration being eased off up to but not including the crest thereof, the easing off on the serrations a being on the flank a<SP>3</SP> and on the serrations b on the flank b<SP>3</SP>.
Patent GB-759208-A (GB)
Title: Freewheel devices
IPC: F16D41/18
Filed: 1954-04-14
Abstract: 759,208. Free-wheel clutches. AUSTIN MOTOR CO., Ltd., and PAYNE, E. R. March 16, 1955 [April 14, 1954], No. 10923/54. Class 80(2) In a free-wheel clutch comprising a radially-slidable pawl 17 mounted in a driven shaft 10 and urged by a spring 19 to cooperate with the ratchet interior 15, 16 of a driving gear 12, 'the centre of gravity of the pawl 17 is so disposed that during drive the centrifugal force of the pawl augments the action of the spring 19, while on overrun the pawl moves radially so far that its centrifugal force opposes and, above a predetermined speed, overcomes the spring 19 and maintains the pawl out of action until the speed is reduced.
Patent GB-577633-A (GB)
Title: Improvements in or relating to abrasive articles
IPC: B24D18/00
Filed: 1943-07-06
Abstract: An abrading tool comprises a solid metal support element to which is brazed a sintered surface element containing abrasive material.  As applied to a grinding-wheel, the abrasive material comprises abrasive grit, for example, diamond dust, silicon carbide, boron carbide, sapphire, &c. coated first with metal, then with glass or ceramic and then again with metal.  This abrasive grain is mixed with powdered metal or carbide and the mixture is placed in a die to form a ring, and compressed, then being heated to a pre-sintering temperature.  A support portion of the wheel, in the form of a circular metallic body of slightly smaller diameter than the inside diameter of the ring, is placed in the ring, with a strip of brazing material in the space between the periphery of the metal body and the ring, and the whole subjected to a sintering temperature which is above the melting-point of the brazing material, the ring in its sintered form being united by the brazing to the metal body.  Flat abrasive p  articles may be formed similarly, the abrasive element being first partly formed at pre-sintering temperature, and then placed on the metal support with interposed brazing material, the whole then being subjected to sintering temperature.  Specification 564,723, [Group XXIII], is referred to.
Patent GB-1255995-A (GB)
Title: Semiconductor device and method of making same
IPC: H01L23/29
Filed: 1969-02-28
Abstract: 1,255,995. Semi-conductive devices. HITACHI Ltd. 28 Feb., 1969 [4 March, 1968; 17 April, 1968], No. 11013/69. Heading H1K. A planar junction is passivated with a multilayer insulating coating. The coating may be considered to have two layers each of which may consist of one or more films; the layer nearest the semi-conductor surface must have a film of silicon oxide on the semi-conductor surface; the outer layer so covers the first layer that no part of the first layer is exposed to the ambient. The first layer may be: silicon oxide; silicon oxide/phosphosilicate glass (two films); silicon oxide/lead silicate glass; silicon oxide/borosilicate glass. The second layer may be: alumina/aluminosilicate glass; phosphoaluminosilicate glass; alumina/silicon nitride; aluminosilicate glass/silicon nitride; phosphoaluminosilicate glass/silicon nitride. The induced carrier density beneath the coating may be varied in sign and magnitude by varying the content and relative thickness of the films. The semi-conductor body may consist of silicon, germanium or gallium arsenide-the embodiments described use silicon. The diode of Fig. 5 (not shown) has a first film of thermally formed   silicon oxide which is protected by a second film of alumina provided by thermal decomposition of tri-ethoxy aluminium-an aluminosilicate film may perhaps be formed at the interface of the first and second films by reaction between them. The PNP transistor of Fig. 11 (not shown) has a first layer consisting of the silicon oxide diffusion-masking film upon which phosphorous pentoxide has been deposited (by oxidation of phosphorus oxychloride) to form, by heating the structure in oxygen, a surface film of phosphosilicate glass. The second layer is pyrolytically deposited alumina. An interface phosphoaluminosilicate film may be formed -such a film may be formed intentionally by reacting together an organoaluminium compound, phosphorus oxychloride, and silane. Aluminium electrodes are provided. The junction-isolated integrated circuit of Fig. 17 (not shown) has a first film of silicon oxide which is either the thermally formed diffusion-mask or a freshly applied film replacing the masking layer. This film is protected by an aluminosilicate layer obtained by the reaction of triethoxyaluminium and silane. The diode of Fig. 18 (not shown) has a first layer of silicon oxide which may contain phosphorus, lead, or boron, and has a second layer mainly composed of alumina-the coating also extends over an anti-inversion ring. The diode of Fig. 19 (not shown) has a silicon oxide film protected by successive films of alumina and silicon nitride. The IGFET of Fig. 20 (not shown) has films of silicon oxide and alumina the relative thicknesses of which may be adjusted in manufacture to control the channel density.
Patent GB-1398377-A (GB)
Title: Preparation of resorcinol and alkyl-substituted derivatives thereof
IPC: C07C37/00
Filed: 1974-03-12
Abstract: 1398377 Preparation of resorcinol and alkylsubstituted derivatives thereof STAMICARBON BV 12 March 1974 [14 March 1973] 11025/74 Heading C2C Compounds of formula wherein R 1 , R 2 , R 3  and R 4  may each represent H or a C 1-6  alkyl group, and wherein the total number of carbon atoms (if any) contained in the said R groups is not more than 12, are obtained by contacting with a dehydrogenation catalyst at an elevated temperature a compound of formula wherein R 1 , R 2 , R 3  and R 4  are the same as defined above, and R 5  represents a C 1-12  hydrocarbon group. The reaction is preferably carried out in the vapour phase at a temperature of 200 to 400 C.
Patent GB-1460542-A (GB)
Title: Tensioning device
IPC: F16F9/02
Filed: 1975-03-17
Abstract: 1460542 Tightening seat belts SOC NATIONALE DES POUDRES ET EXPLOSIFS 17 March 1975 [23 April 1974] 11077/75 Heading A3V A tensioning device for a vehicle safety belt 2 comprises a piston 8 movable in a cylinder 17 defined within a casing 5, the piston being secured to an axial rod 3 attached via a strap 4 to belt 2, an explosive charge 12 in use supplying high pressure gas to an expansion chamber 14 to push piston 8 in a first direction to tension belt 2, a component 19 then being actuated in response to the tensioning force reaching a predetermined value to prevent piston 8 moving further in the first direction but to allow it to move relative to cylinder 17 in the opposite direction for damping, and a resilient element e.g. spring 22 to move rod 3 relative to piston 8 in the first direction to tension belt 2 at the end of this damping when any external forces exerted on the rod opposing retraction thereof have been substantially reduced. Piston 9 is located between piston 8 and casing 5. Initially, piston 8 contacts wall 10 of a tube 17 located between pistons 8 and 9. Piston 9 is held inside casing 5 by a frangible stop 11 e.g. an elastic ring with lugs. Component 16 prevents piston 9 moving backwards after it has moved forwards. Spring 18 pushes piston 9 and tube 17 apart. Shoulder 20 on rod 3 supports a frangible stop 21 which holds compressed a spring 22. When a collision occurs an impact detector generates an electrical signal to fire charge 12 and propel piston 8 backwards breaking stop 21 off rod 3. The forward force on the belt due to the passenger being thrown forward slows down the backward movement and component 19 is actuated to prevent further backward movement. Piston 8 moves forward to effect a first phase of damping. A second damping phase starts when piston 8 has returned to its initial position contacting wall 10 of tube 17 and when the forward force ruptures stop 11 permitting piston 9 to move forward. The pressure in chamber 13 is limited by a valve or residual compression chamber. When the forward force is diminished, spring 22 pushes rod 3 backwards relative to piston 8. Piston 8 is pushed by tube 17 which is pushed back relative to to piston 9 by resilient element 18. In Figures 6, 7 (not shown) springs (105, 106) move two concentric parts (101, 102) relative to each other and to the outerpiston (100) to exert a tension force on the rod at the end of damping. In Figures 8, 9 (not shown) the space between outer piston (110) and concentric part (111) accommodates springs (114, 116) and a sliding ring (115). At the end of damping the person is restrained by a weak force and an additional damping force if secondary impacts occur.