baber/WOPTO huggingface dataset:
Patent GB-208191-A (GB)
Title: Improvements in gas cookers
IPC: F24C3/02
Filed: 1922-08-10
Abstract: 208,191. Helps, G. Aug. 10, 1922. Gas cooking-stoves; ovens.-A gas cooking- - stove is constructed so that all secondary air is excluded and the only outlet connects to another oven, while the burner is one requiring no secondary air. The oven comprises front and back frames h, n connected at the top by brackets p and at the lower end by the oven bottom j. Plates s of metal, asbestos, or slate are dropped into the frames h, n to form the back and sides of the oven and the space u between the plates s and an inner lining f is filled with non-conducting material. The removable burner c, which has flanges pl adapted to fit into recesses in the bottom plate j or in the side walls, is of the kind which burns without secondary air and comprises a mixing chamber mc, distributing chamber dc and an adjustable cap ac arranged to provide an orifice sl for the combustible mixture. The products of combustion escape from the oven at d and pass along the space between the oven top k and the outer plate w to an outlet l communicating with another oven. The back of the oven may be so - shaped that the burner is protected from dropping fat &c. or a plate, hinged to the oven back, may be provided for this purpose. Specifications 107,135 and 133,107, [Class 75 (i), Burners &c.], are referred to.
Patent GB-814475-A (GB)
Title: A fluid pressure motor
IPC: F15B15/08
Filed: 1956-07-16
Abstract: 814,475. Hydraulic motors. STEINER, C. July 16, 1956, No. 21892/56. Class 69 (2). An hydraulic motor comprises cylinders 11A, 11B containing pistons formed with rack portions meshing with a pinion 32. Liquid is selectively supplied to two diagonally opposite ends of the cylinders and exhausted from the other ends to rotate the pinion. Each end of each piston is provided with a felt wiper ring 30 and a sealing ring 31 beyond which the piston is reduced in diameter. The pinion and rack portions operate in a lubricant bath.
Patent GB-423519-A (GB)
Title: Improvements in or relating to the manufacture of rubberised fabric
IPC: D06N3/00
Filed: 1933-08-04
Abstract: An asphalt varnish used as a final coat in producing rubberized fabric contains petroleum asphalt, bodied chinawood oil, and gasoline.  A shellac varnish applied over a rubber coating to prevent sticking contains shellac, soap, aqueous ammonia, water, nigrosine, and aluminium flake.
Patent GB-597793-A (GB)
Title: Improvements in or relating to field excitation arrangements for electric alternators
IPC: H02K19/28
Filed: 1945-08-27
Abstract: 597,793. Alternators. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. Aug. 27, 1945, No. 21976. [Class 35] In an alternator or its exciter fed through a transformer and rectifier with current varying with the main volts and current, the input to the rectifier is increased when the alternator volts are low. In the form shown, the saturable inductance 10 is connected at 13 to the secondary 7 of the transformer supplying the rectifier 3 and at 14 to an unsaturated inductance, whereby, at low voltages when the alternator volts are low, inductance .10 is unsaturated and serves as an auto-transformer to boost the voltage fed to the rectifier.
Patent GB-1208239-A (GB)
Title: Improvements in and relating to photoconductive arrangements
IPC: G03G5/082
Filed: 1969-04-30
Abstract: 1,208,239. Light sensitive selenium layer. RICOH K.K. 30 April, 1969 [1 May, 1968], No. 22001/69. Heading H1K. [Also in Division C7] A light sensitive device suitable for use in Xerography comprises a support having a vacuum deposited layer of selenium thereon, the dark current resistance of the layer being increased by heating and exposing to light. In an embodiment an aluminium plate or drum having an oxidized surface was maintained at 20‹ to 90‹ C. and a layer of selenium deposited thereon. The layer was polished and a masking screen placed thereon. The coated plate was heated to 60‹ to 95‹ C. and irradiated with light from an Iodine or Xenon lamp thereby converting those exposed portions of the selenium layer from amorphous to metallic selenium. The support may also be glass or Plexiglass (RTM) coated with indium. In another embodiment a masking screen is not used but the exposure time is controlled so that recrystallization of the layer extends to only 90% of the layer thickness. The grid pattern on the plate is said to aid half-tone reproductions.
Patent GB-1381631-A (GB)
Title: Floatation process for producing continuous glass ribbon
IPC: C03B18/18
Filed: 1972-05-11
Abstract: 1381631 Float glass manufacture VETRERIA DI VERNANTE SpA 11 May 1972 [26 May 1971] 22023/72 Heading C1M In the production of glass ribbon 5 by the float process, contaminating gases are removed from the refractory ceramic structure 3 defining the bath for molten metal 4 by circulating a stream of hydrogen therethrough. A reservoir 8 containing hydrogen is connected by conduits 7 or a manifold to apertures 6 along the length of the tank 1 and a valve 9 regulates the pressure of the gas substantially to that of the atmosphere. At the lower part of the metal body 2 of the tank, a row of discharge apertures 11 are provided and which are connected to a vacuum pump 10 which draws the hydrogen and unwanted gases through the structure 3 and discharges to atmosphere. Some hydrogen may dissolve in the molten metal 4 and will react with any oxygen present, but excess of hydrogen may be removed by a circulation of the metal through conduit 12 to atomizing nozzle 13 in a chamber 14 exhausted through a conduit 15 and which thereby removes the hydrogen present. The metal collects at the bottom of chamber 14 and is recycled to the bath through conduit 16 either by gravity or by a pump 17.
Patent GB-516841-A (GB)
Title: Improvements relating to electric signalling systems
IPC: H04Q9/04
Filed: 1938-07-25
Abstract: 516,841. Electric signalling systems. EVERSHED & VIGNOLES, Ltd., and MARCHMENT, W. T. July 25, 1938, No. 22076. Drawings to Specification. [Class 40 (i)] In a system having a receiver operated in step with the transmitter and comprising a number of neon or other luminous discharge lamps responding to transmitted impulses, the lamps are associated with local circuits whereby any particular lamp is maintained in a continuous luminous state as long as it is receiving impulses. The invention is described with reference to one of the synchronous distributer systems described in Specification 510,551, each neon lamp when receiving impulses being maintained in continuous discharge by the discharge of the condenser of a resistance or inductancecondenser shunt having a suitable time constant. The shunt circuit may be fed with an auxiliary voltage substantially less than the striking voltage of the lamps. In the system described each half-cycle of the A.C. supply which also drives the distributers is available for use as an impulse, and the shunt circuits are directly fed by a common transformer, but the invention is .also applicable to D.C. signalling systems.
Patent GB-635972-A (GB)
Title: Improved process for the manufacture of carbides of the refractory metals
IPC: C01B32/949
Filed: 1946-07-26
Abstract: In making refractory metal carbides, e.g. tungsten carbide, by agglomerating carbon, preferably graphite, and a refractory metal and heating in an atmosphere of hydrogen and in a graphite crucible, the pressure of agglomeration is higher than 1000 kg. per cm.2, the rapidity of the reaction being then such that heating for 30 minutes at 1600 DEG  C. is more than sufficient to complete the reaction. Either the agglomerates may be placed in the crucible having a lining of powdered carbon and heated in a hydrogen atmosphere, or they may be placed in the crucible and heated in an atmosphere of hydrogen to which is added methane or hydrocarbons which decompose on heating to form methane in such proportions, e.g. 8 per cent methane, 4 per cent ethane, 3 per cent propane or 2 per cent butane, that no injurious reaction occurs.
Patent GB-1452472-A (GB)
Title: Low pressure sodium discharge lamps
IPC: H01J61/56
Filed: 1975-05-22
Abstract: 1452472 Vapour discharge lamps J CATES 22 May 1975 22295/75 Heading H1D A low-pressure, double envelope sodium discharge lamp has at least one of the lead-in wires has a portion made of an electrically fusible material which is either titanium or an alloy of 47% Ni, 46% Fe, 5% Cr, remainder Cu, Si, Mn. The portion can be in an end cap or within the outer envelope and is typically 0À18 mm in diameter. The filling can be sodium, neon and argon.
Patent GB-320972-A (GB)
Title: A new or improved coupling for sectional roof-supporting arches applicable for use in coal mines and the like
IPC: E21D11/22
Filed: 1928-08-02
Abstract: 320,972. Rothwell, N., and Smith, J. W. Aug. 2, 1928. Shoring; ironwork, constructional.- Sectional ironwork arch-forming members for use in mines are joined together by means of one-piece sleeves 2 shaped to fit approximately the section metal and secured in position by means of wedges 3 passing between the sleeve and the arch members. The sleeve may surround the whole or only a part of the section metal but bears on both sides of the web of the section. Sight holes 4 may be provided in the sides of the sleeve which may also be stiffened by ribs.
Patent GB-676291-A (GB)
Title: Improvements in or relating to methods of brazing articles consisting of oxidation-resistant alloys
IPC: B23K35/00
Filed: 1948-08-25
Abstract: 676,291. Sobering and brazing. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 25, 1948 [Aug. 28, 1947], No. 22377/48. Class 83 (iv). In making an oxidation resistant joint at an article constituted by a Cu, Ni or Ag base alloy rendered oxidation resistant by Al or Be, by brazing in a reducing gas, the article freed from its oxide layer is coated with a layer of metal which does not oxidize in the gas and is brazed by the use of a non-oxidation resistant material with a base of Cu, Ni or Ag and the temperature is raised such that absorption of the Al or Be from the article is achieved, thus rendering the uniting layer oxidation resistant. Brazing is effected at a temperature which is lower by less than 60‹ C. than the lower limit of the melting range of the alloy of the article. In an embodiment two articles consisting of aluminium bronze with 8 per cent A1 (lower limit of melting range 1033‹ C.) are freed from their oxide layers and provided with a 5Á layer of Ni. A brass foil (63 per cent Cu, 37 per cent Zu) 100 Á thick, is compressed between the articles and in pure hydrogen at a temperature of 1000‹ C. an oxidation resistant bond is formed which homogenizes at an operating temperature of 750‹ C. In a further embodiment an 8 per cent aluminium-bronze article is nickel coated and brazed to a stainless steel article 18 per cent chromium, 8 per cent nickel, by means of a copper alloy containing 20 per cent manganese. Specifications 540,961 and 578,364 are referred to.
Patent GB-1000474-A (GB)
Title: Improvements in or relating to the manufacture of knitted stockings for women
IPC: D04B1/26
Filed: 1962-06-13
Abstract: 1,000,474. Knitting. F. SANGIACOMO. June 13,1962 [March 14, 1962], No. 22635/62. Headings D1C and D1F. Stockings are knitted on a circular three-feed knitting machine in a six-course cycle wherein the third and sixth courses comprise longer stitches than their preceding two course and alternate needles hold their loops and receive tuck loops, the held stitches of the sixth course being in the wales of the knitted stitches of the third course and the long stitches causing the formation of locking stitches in another course. As shown, Fig. 7 knitting cam III at the third feed is lower than knitting cams I and II at the first and second feeds and needle selectors 10 and 11 are provided.
Patent GB-203714-A (GB)
Title: Improvements in and relating to the manufacture of ultra-filter membranes
Filed: 1923-09-08
Abstract: 203,714. Duclaux, J. Sept. 11, 1922, [Convention date]. Single coatings. -Filtering-membranes are formed on a strip of cloth which is guided by rollers so as to dip first into a solution of cellulose ester and then into a coagulating liquid. The cloth passing from a roll a to a roll g is caused by rollers c, d, e to pass through a trough b containing a solution of nitro-cellulose or other cellulose ester and a vat f containing water or other coagulating liquid. The speed of travel is such that the film of collodion is solidified before reaching the roller d. To prevent adhesion the roller d may be covered with porous material, such as cloth or blotting paper, impregnated with the coagulating liquid. More than one vat f may be used. To cover the solvent of the cellulose ester, vapours given off during the passage of the cloth between the trough b and roller d may be collected in a casing which may surround this part of the apparatus. Some solvent may also be recovered from the coagulating liquid. Variations in the texture or thickness of the membrane formed may be rendered visible by adding colouring matter to the liquid in the vat f. Before receiving the collodion the cloth may be moistened with water or a solution which will modify the filtering properties of the film afterwards formed. Instead of using the trough b a jet or film of collodion may be projected from a nozzle on to the cloth on one or both sides thereof.
Patent GB-923043-A (GB)
Title: Process for refining pig-iron melts by the blowing of oxygen
IPC: C21C5/32
Filed: 1961-06-22
Abstract: A process for refining molten pig iron by surface blowing in which increased scrap additions may be made comprises injecting one or more gaseous or easily gasifiable liquid hydrocarbons into the upper part of the oxygen jet between the lance and the bath and increasing the quantity of oxygen supplied to the jet.  The hydrocarbons may be supplied through the same or a separate lance, in the latter case the hydrocarbon lance should be spaced from the oxygen lance in the horizontal direction not more than 150 mm. The hydrocarbon may be natural gas, methane, coke oven gas or a light hydrocarbon oil.
Patent GB-283983-A (GB)
Title: Improvements in or relating to sewing-machine-thread waxing or other wax heating devices
IPC: D05B67/00
Filed: 1926-09-15
Abstract: 283,983. British United Shoe Machinery Co., Ltd., (United Shoe Machinery Corporation). Sept. 15, 1926. Thermal cut-outs.-Apparatus for heating wax, more especially for applying it to sewing-machine thread, comprises a thermostatically-controlled electric 'heating device depending into the wax-pot, to keep the temperature of the wax between certain definite adjustable limits. As applied to a sewing machine, two electric heating coils 13, and a thermostatic device comprising an expansion coil of metal 30, are placed respectively in two spaced apart vertical columns 16, 31, depending from a cover plate 4 into the wax pot 6. Fig. 2 shows the arrangement in elevation in a view at right-angles to that of Fig. 1. The heating coils 13 are connected in parallel across mains 60, 61, and the thermostat 30 controls a switch member 70 to cut one of the coils suddenly out of circuit when the temperature rises above a certain limit, and to return it suddenly into circuit when the temperature falls below another limit. One end of the thermostatic coil 30 is clamped to a bracket 36 mounted rigidly in the column 31 and the other end is secured to a vertical shaft 40 journaled in horizontal lugs 42, 44 at the top and bottom of the bracket 36. Rotation of the shaft 40 is transmitted by an arm 94 and a coiled spring 90 to move the pivoted switch member 70 suddenly into and out of contact with adjustable stud members 82, 83 enclosed in a casing 64 on the cover plate 4 to cut out of and put in circuit respectively one of the heating coils 13. The setting of the arm 94 relatively to shaft 40 may be adjusted to change the limiting temperatures within which the thermostat acts, without changing the range of temperature. Specifications 22546/12, 107,655, and 251,262 are referred to.
Patent GB-230738-A (GB)
Title: Improvements in and relating to lamp shades
IPC: F21V17/02
Filed: 1924-09-26
Abstract: 230,738. Levy, R. Sept. 26, 1924. Shades, silk and like.-In a collapsable lamp shade a number of angular levers d, preferably made of wire, are pivotally mounted on a carrier ring b, the longer arms of the levers carrying the silk, fabric or like material e and the shorter inwardly-directed arms being connected by silk or like cords f, chains or like flexible members to a securing device such as a sleeve g or a balance weight whereby the shade can be secured in various positions of extension. The shade may terminate in a decorative valance, fringe or the like e<1>. In the modification shown in Fig. 4, the shorter arms of the levers d are connected by means of links l to an inner ring i to which only two or three cords fare connected, and in this case stops are provided on the ring b to prevent lateral movement of the levers d.
Patent GB-614804-A (GB)
Title: Improvements in or relating to multi-bladed adjustable reamers
IPC: B23D77/04
Filed: 1946-08-31
Abstract: 614,804. Reamers. ENGLISH STEEL CORPORATION, Ltd., and ARCHER, J. Aug. 31, 1946, No. 22767. [Class 83 (iii)] In an adjustable reamer having blades 14, Fig. 5, adjusted in tapered slots 15 in a mandrel by nuts 18 at each end of the blades, a washer 39 splined to the mandrel by inwardly-projecting lugs 41 engaging the blade slots is interposed between each nut and the blades. The washers 39 may have a conical recess 40 bearing against the ends of the blades 14 or may have inclined notches 23, Fig. 7, engaging the ends of the blades; the tops of the mandrel threads may be truncated as at 26. Each nut 18 may have a scale co-operating with an index mark on the washer or on the mandrel, or an index mark on the nut may co-operate with a scale on the washer. Knurling or spanner flats may be provided for rotating the nuts.
Patent GB-851083-A (GB)
Title: Mechanical variable-speed power transmission apparatus
Inventor: WEHSELY KARL
IPC: F16H37/00
Filed: 1957-07-18
Abstract: 851,083. Variable-speed gear. INSTITUT FUR LANDMASCHINENUND TRAKTORENBAU. July 18, 1957, No. 22775/57. Class 80 (2). [Also in Group XXXI] A steplessly variable-ratio gear 18, for op tional use in series with the main stepped-ratio travelling gear of a tractor, is arranged for subsequent attachment to the existing stepped gear 11, 12 by the provision of two connection shafts 7, 16, extending out through the side wall 17 of the existing gear for connection to the input and output shafts of the attached stepless gear. The stepped gear, which has wheels slidable on an input shaft 11 to mesh wheels fast on an output shaft 12, is driven through a double main clutch 1, providing a power take-off 3, and a bevel reverse gear 6, having a forward and reverse dog clutch 10. For drive through the stepless and stepped gears in series dog clutches 9, 10 are disengaged and dog clutches 13, 19 are engaged to drive the connection shaft 7 from the bevel 6 and to drive the stepped gear input 11 through bevels 15. For stepped drive alone, the dog clutches 19, 13 are released, 9 engaged and 10 engaged with the bevel 8 at 5 for reverse or forward drive as required. When the stepped drive only is required the double clutch 1 provides power to the bevel 5 only and the stepless gear 18 is removed. The dog clutches 9 and 19 are operable from a single lever.
Patent GB-377452-A (GB)
Title: Process for obtaining light hydrocarbons from heavy cyclic hydrocarbons or their derivatives by destructive hydrogenation
Filed: 1931-08-13
Abstract: In the destructive hydrogenation of heavy cyclic hydrocarbons by treatment under high pressure with hydrogen in the pressure of metal halides as catalysts as described in the parent Specification, the catalyst is first dissolved in the liquid to be treated.  If the catalyst is not easily soluble, it is added dissolved in another oil or combinations of haloid salts, such as Al2Cl6, C6H6, may be used. The solution o the catalyst is carried out at low temperatures and preferably in the presence of hydrogen under pressure.  The catalysts described in Specification 302,354, [Class 32, Distilling &c.], may be used in addition.  One per cent of anhydrous aluminium chloride is added with constant stirring to naphthalinic coke-oven oil heated to 40-50 DEG  C. and the solution is distructively hydrogenated at a pressure of 200-250 kgs. and a temperature of 475-480 DEG  C.
Patent GB-1038067-A (GB)
Title: Improvements in or relating to tyre building machines
IPC: B29D30/18
Filed: 1963-06-10
Abstract: 1,038,067. Tyre-building machine. DUNLOP RUBBER CO. Ltd. June 10, 1963 [June 16, 1962], No. 22982/63. Heading B7C. A tyre building former 7 has at each end a ply turn-up device B, which is axially movable with respect to the former and comprises a mounting member 14 which carries a plurality of arms 3, pivotally mounted on a common pitch circle concentric with the former axis, and at least one arm pivoting member 13, 38 having guides 5 through which extend the arms 3 towards the former 7, relative axial movement of members 13, 14 in one direction pivoting the arms 3 radially inwards to consolidate tyre-ply against the end of the former (Fig. 4, not shown), and movement in the other direction pivoting the arms outwards to effect ply turn-up (Fig. 11, not shown). In Fig. 1, the arm pivoting member comprises an annular flange 38 with guide holes 5. Side formers 11 and bead ring carriers A are also included, various axial movements being effected by compressed air supplied to various annular chambers 27, 28, 34, 37, 40 &c. The arms 3 are spring steel and include portions 39, which give them longitudinal resilience, and free rollers 4. A series of leaf springs 1 spaced about a circle and joined by a garter-spring 2 are shown. In operation, side formers 11 are moved to abut the former 7, ply 8 is applied and formers 11 withdrawn, the ply ends 8a being then turned down manually or mechanically as in Specification 908,118. Flange 12 carrying springs 1 is moved axially, and members 13, 14 are moved together and then relatively (Fig. 4) to press ply ends 8a against the former end and to move the rollers 4 on arms 3 radially inwards. A bead wire 9 is then applied (Fig. 5, not shown), member 15 and its end disc 19 moving axially, independently of members 13, 14. Rollers 4 are used to press the bead wire 9 against the ply (Fig. 7, not shown), and then flange 12 is moved axially outwards (Fig. 9, not shown) to initiate ply turn-up. Finally, members 13, 14 are advanced together and then moved relatively, causing rollers 4 to complete turn-up (Fig. 11). Instead of guides 5 and the pivot points of arms 3 being on two circles of different diameters as shown, the diameters may be equal and the lower parts of the arms curved so that relative axial movement of guides and pivot points causes the arms to pivot radially.