baber/WOPTO huggingface dataset:
Patent GB-878792-A (GB)
Title: Transistor and method of making same
IPC: H01L21/223
Filed: 1959-11-16
Abstract: 878,792. Transistors. TEXAS INSTRUMENTS Inc. Nov. 16, 1959 [Nov. 20, 1958], No. 38792/59. Class 37. A transistor device comprises a body of semi-conductor material containing impurity atoms of one conductivity-producing type, impurity atoms of opposite conductivityproducing type diffused into a region of said body, impurity atoms of said one conductivityproducing type diffused into a portion of said region to compensate same, and material including impurity atoms of said one conductivityproducing type alloyed to said compensated portion. In one example, P-type Ge wafers, cleansed as far as possible from all traces of copper by immersion in potassium cyanide solution and rinsing in copper-free deionized water, are stacked in a quartz tube containing an alloy of Ge and Sb in powdered form and an alloy of In and G ain pellet form. The tube evacuated, sealed off and heated to a diffusion temperature of 650 to 750 C. The Sb penetrates farther than the Ga so a wafer is obtained (Fig. 2) comprising a region 14 of the original P-type conductivity, a diffused layer 15 of N- type conductivity, a compensated layer 16 of N-type conductivity with high resistivity, and a surface layer 17 of substantially monomolecular thickness of P-type conductivity. The latter layer is removed by etching in concentrated nitric acid followed optionally by a carefully controlled etching in a mixture of hydrogen peroxide and tartaric acid solutions. The wafer is then lapped to remove diffused and compensated regions from all except one surface, cleansed by etching, and contacts provided by conventional methods, e.g. by evaporation in a vacuum. As shown in Fig. 4, a collector contact 25 in the form of an aluminium tab or an indium dot provides an ohmic connection with the region 14, a base contact 26 of goldantimony alloy is alloyed to the diffused layer 15 and forms an ohmic contact therewith, and an emitter contact 27 of aluminium forms a rectifying junction 30 with the compensated region 16, thus providing a PNP transistor. In a further example, an NPN transistor is obtained commencing with N-type Ge wafers. In is diffused into the wafer in a first diffusion operation to provide a P-type surface layer, and the body of the wafer is thermally converted to P-type conductivity. In a second diffusion operation utilizing In and As or Sb, the body of the wafer is thermally converted back to N-type conductivity, thus providing a wafer as shown in Fig. 2 but with opposite conductivity types.
Patent GB-1096694-A (GB)
Title: Improvements in or relating to the moulding of cork-rubber blocks
IPC: B29C43/52
Filed: 1966-09-01
Abstract: 1,096,694. Moulding cork-rubber blocks. SHELLER MANUFACTURING CORPORATION. Sept. 1, 1966 [Dec. 2, 1965], No. 39155/66. Heading B5A. In a method of moulding cork-rubber blocks, cork granules are mixed with a rubber compound and curing agent and the mixture is heated and formed by a mill into a slab. The slab is cut into smaller ones to fit a mould, and a number of cut slabs are plied together, heated, and placed in the heated mould where they are compressed to form a block which is then cured by additional mould heating.
Patent GB-952777-A (GB)
Title: Improvements relating to locking means for screw-threaded connections
IPC: F16B39/06
Filed: 1961-11-01
Abstract: 952,777. Locking nuts. F. E. FOWLE. Oct. 29, 1962 [Nov. 15, 1961; May 15, 1962], Nos. 39160/61 and 18751/62. Heading F2H. A means for frictionally locking together a nut 10 and bolt 11 comprises an L-shaped pin having a straight portion of flattened or oval section presenting an axially extending area of reduced radius which portion can be fitted into a straight bore 14 of circular cross-section which, as shown, is formed in the nut but which may be formed in the bolt. As shown, the bore 14 intersects only the root portion of the screw thread of the nut. The axis of the bore is either parallel to the rotational axis of the nut or slightly oblique thereto in a plane parallel to the said axis. When the pin is inserted into the bore 14 with the area of reduced radius facing towards the bolt, the area clears the thread of the bolt, but on rotation of the pin, the flank thereof engages the crests of the threads 20 with a camming action which locks the nut to the bolt. The arm 18 of the pin extends parallel to a groove 22 in the end face of the nut when the pin is turned into its locking position. The pin is bent down into the groove 22 to prevent rotation.
Patent GB-1195616-A (GB)
Title: Water-Insoluble Monoazo Dyestuffs and process for their manufacture
IPC: C09B29/08
Filed: 1968-08-16
Abstract: 1,195,616. Substituted N-bis-(#-cyanoethyl)- anilines. CIBA Ltd. 16 Aug., 1968 [17 Aug., 1967], No. 39277/68. Heading C2C. [Also in Division C4] N,N - bis - (# - cyanoethyl) - 3 - acetylaminoaniline is prepared by reacting 3-aminoacetanilide with acrylonitrile in glacial acetic acid at 120‹ C. in an autoclave and in presence of copper (I) chloride. The reaction mixture is cooled, stirred in hydrochloric acid, isolated and recrystallized from ethyl acetate. 3-Amino N,N-bis(#-cyanoethyl) aniline is prepared by hydrolysing the above with concentrated hydrochloric acid and then sodium carbonate.
Patent GB-1400314-A (GB)
Title: Form of ammonium tetramolybdate and method of preparation
Inventor: STANLEY ROBERT W
IPC: C01G39/00
Filed: 1973-08-20
Abstract: 1400314 Ammonium tetramolybdate; molybdic oxide NORANDA MINES Ltd 20 Aug 1973 [19 April 1973] 39292/73 Heading C1A [Also in Division C7] The invention comprises fine powdered ammonium tetramolybdate having 60À65  0À05% by weight of Mo and 5À6  0À1% by weight of ammonia calculated as NH 4 <SP>+</SP>, the remainder being oxygen, water of hydration and minor impurities, and having an X-ray diffraction pattern with the most intense peaks, in order of decreasing intensity, at 6À20 Angstroms, 8À14 Angstroms, 7À24 Angstroms, 3À61 Angstroms and 7À37 Angstroms. It also comprises a process for the preparation of a fine powdered ammonium tetramolybdate by leaching technical grade MoO 3  with ammonia, removing the residue from the leach to obtain an ammonium molybdate solution, acidifying the solution at a temperature of up to 75 C. to a pH of 1-5 to 2À5, separating the precipitate of granular ammonium tetramolybdate and drying it at 50 to 280 C. Leaching may be effected at 50 to 60 C., with injection of air and/or addition of H 2 O 2  to oxidize Fe<SP>2+</SP> to Fe<SP>3+</SP>. The residue may be filtered and washed, the washings being returned to the leach. Washings from the precipitated product can be recycled to the acidification. The product after drying may have an average particle size of 2 to 5 Á and a bulk density of 0À75 to 0À90 g/c.c. It may be heated at above 400 C. in air to give MoO 3  (via intermediate ammonium dodecamolybdate) or at above 800 C. in H 2  to give Mo (via intermediate MoO 2 ).
Patent GB-1512240-A (GB)
Title: Process for the production of water-dilutable binders based on air-drying short oil alkyd resins
IPC: C08L67/08
Filed: 1975-09-25
Abstract: 1512240 Water-dilutable alkyd resins BAYER AG 25 Sept 1975 [28 Sept 1974] 39311/75 Heading C3R A water-dilutable binder based on an airdrying short-oil alkyd resin is prepared by condensing a polyol, a polycarboxylic acid, an air-drying oil or acid and a natural resin modified phenolic resin to form an alkyd resin having a polyol : polycarboxylic acid : air-drying oil or acid molar ratio of 1 : 0À5-1 : 0À3-1, and reacting the alkyd resin with a dicarbonylic acid anhydride to form an alkyd resin semiester having an acid number of from 30 to 70, a hydroxyl number of from 40 to 120, an airdrying oil or acid content of from 15 to 50% by weight and a phenolic resin content of from 2 to 10% by weight. The example describes preparing an alkyd resin from linseed oil, pentaerythritol, trimethylol propane, linseed oil fatty acid, benzoic acid, phthalic anhydride and a natural resin modified phenolic resin and preparing the semiester by reaction with tetrahydrophthalic anhydride, followed by reaction with triethylamine and preparation of a lacquer by the addition of a drier; water and solvents.
Patent GB-1390031-A (GB)
Title: Reheat system for a gas turbine engine
IPC: F23R3/32
Filed: 1971-08-21
Abstract: 1390031 Gas turbine engine re-heat equipment ROLLS-ROYCE (1971) Ltd 4 Aug 1972 [21 Aug 1971] 39332/71 Headings F1J and F1L The invention relates to a re-heat combustion system of a gas turbine engine in which means are provided for mixing re-heat fuel with the turbine exhaust gases. The re-heat equipment comprises a plurality of fuel manifolds 16, only one of which is shown, also flame stabilizing gutters 20, 21 disposed downstream of the manifolds. Each manifold is supported by and receives fuel from a plurality of supply pipes 17, and is connected to a number of stub pipes 19 by means of connecting pipes 22. Each stub pipe is open at its upstream end 23 for inflow of turbine exhaust gases from the re-heat duct and is open at its downstream end 24 for discharge of fuel and exhaust gas mixture into the re-heat combustion zone 26; fuel is supplied from the manifold 16 through an orifice 25 into the connecting pipe 22 and so into the stub pipe 19. The fuel is vapourized within the stub pipe. In a second embodiment the stub pipe is mounted directly on the manifold.
Patent GB-1184214-A (GB)
Title: A Process for the Treatment of Drinking Water and Industrial Effluents
IPC: C02F1/52
Filed: 1967-08-29
Abstract: 1,184,214. Treating water. DEUTSCHE GOLD - UND SILBER - SCHEIDEANSTALT. 29 Aug., 1967 [31 Aug., 1966], No. 39418/67. Heading G1C. Water is purified by treatment with pyrogenic silica and aluminium sulphate in the presence of water-soluble protein. The protein or the aluminium sulphate may be already present in the water. The solids used for treatment may be in the form of a filter.
Patent GB-1470100-A (GB)
Title: Press
IPC: B21J9/18
Filed: 1974-05-31
Abstract: 1470100 Wedge presses LANGENSTEIN & SCHEMANN AG 31 May 1974 [8 June 1973] 39473/76 Divided out of 1470099 Heading B3H A power press for metal working comprises a wedge member 104 which acts between a frame member 101 and a ram member 107 to reciprocate the ram member by way of mutually engaged thrust surfaces 103, 108. The thrust surfaces 108 between the wedge member and the ram member are angled slightly to the plane normal to the direction of movement of the ram member. This angle 113 is preferably equal to the angle of friction between the thrust surfaces 108. The wedge is actuated by a screw 106 engaged with a nut 105 captive in the wedge member.
Patent GB-814428-A (GB)
Title: Improvements in or relating to spinning tools for reducing the end of a tube
IPC: B21D41/04
Filed: 1956-12-28
Abstract: 814,428. Spinning; drilling. CALUMET & HECLA Inc. Dec. 28,1956 [May 21, 1956], No. 39523/56. Classes 83 (3) and 83 (4). A spinning-tool comprises a holder, means on said holder defining a spinning surface to engage the outer surface of a tube and to reduce the end, and a cutter carried by said holder for trimming the annular transverse surface of the end of the tube during spinning. A spinning tool, Fig. 4, comprises a holder 10 with a tapered shank 12 for insertion in a driving chuck and carrying removable spinning blades 16 adjustably mounted in slots 14. Each blade 16 has a spinning-tip 20 formed of a hard material, e.g. tungsten carbide. To eliminate the tendency of the tool to shear the tube at high rates of axial feed, the leading edges of the tool-tips are rounded, e.g. <SP>1</SP>/ 16  inch radius. The tube is reduced preferably by feeding it axially between the rotating spinning surfaces or alternatively the work may rotate with the tool stationary. In addition to facing the end of the tube the cutter 68 acts as an abutment to limit axial movement of the tube. In a modification, Fig. 1 a cylindrical pilot 36 is provided on the end of a member 30 which is rotationally fixed in a bore 28 of the holder by a set screw. The pilot enters the reduced end of the tube to locate guide and shape it during spinning, while a shoulder 40 of a square-sectioned portion 35 of the member 30 acts as an abutment to limit axial movement of the tube. Drilling; cutter8.-A reaming-head 60 with cutting edges 62 locates and guides the tube end during spinning and forms it to the desired internal diameter. The reamer is carried on a shaft 56 mounted within a tubular plug 50 and fixed to rotate with the holder 10. A cutter 68 with a shank 66 slidably located in the plug 50 has a cutting head 70 which rotates with the holder to trim and face the end of the tube. Cuttings are removed by a fluid introduced through a nozzle 106 and rotation of the tool removes the cuttings radially along grooves 90 and 92 by centrifugal action. An adjustable shield 108 is mounted on the holder 10 to protect the tube from cuttings.
Patent GB-1221118-A (GB)
Title: A method and apparatus for packaging newspaper stacks
IPC: B65B27/08
Filed: 1968-08-19
Abstract: 1,221,118. Packaging newspaper stacks. VERTEC VERPACKUNGSTECHNIK m.b.H. & CO. GES. FUR. 19 Aug., 1968 [18 Aug., 1967], No. 39598/68. Heading B8C. Newspaper stacks are packaged in heatshrinkable plastics foil by transporting the stacks 2 consecutively through a station 1 at which the stacks are wrapped loosely, applying weights 7 on to the upper surface of the stacks, heating the stacks at station 11 to shrink the plastics foil, the stacks preferably being cooled at station 12 before removing the weights 7. As shown in Fig. 1, the stacks are squared by pivotable plates 8, 9 before applying the weights while stationary on belt 3. The stacks are passed through heating and cooling stations 11, 12 on belt 10. The weights 7 are transported on rails 15 by means of rollers 16; they are removed from the stacks at station 13 and passed to feeding and depositing station 4. They are lifted by mechanism 14 and a movable section of the track (19, Fig. 12, not shown) is inserted under rollers 16. They are also deposited on the stacks by a similar movable section of track (18, Fig. 2) and depositing fork 5. The weights 7 are of grid form and are preferably in the form of two parallel, relatively movable perforated plates (21, 22, Fig. 4, not shown).
Patent GB-345361-A (GB)
Title: Improvements in or relating to road-traffic signals for vehicles
IPC: B60Q1/34
Filed: 1929-12-30
Abstract: 345,361. Road - traffic signals on vehicles. AIREY, A. J., 29, Greenhead Road, Huddersfield. Dec. 30, 1929, No. 39701. [Class 118 (ii).] A hollow direction-signalling hand g on a road vehicle contains a lamp f and is mounted on a transverse spindle c adapted to be turned by a handle p through the medium of a drum o, a Bowden wire j and a drum of smaller diameter on the spindle c, this drum being restored to its initial position by a coiled spring.
Patent GB-869085-A (GB)
Title: Process for cleaning and sterilizing milking equipment
IPC: C11D3/395
Filed: 1959-11-23
Abstract: Milking equipment is sterilized by an agent having combined detergent and sterilizing properties and comprising an aqueous solution of a composition which contains at least 5% by weight of an organic detergent, e.g. an alkylaryl sulphonate which exhibits detergent properties at a pH of below 7.5 and is stable to chlorine, and an amount of a water-soluble germicidal chlorine-containing organic compounds, e.g. 1,3-dichloro-5,5-dimethyl hydantoin providing at least 5% of available chlorine by weight of the composition, the composition being a solid, which on dissolving in water gives a pH of below 7.5.  Preferably the composition contains from 6 to 15% by weight of the organic detergent and at least 8% of available chlorine and the solution has a pH of between 5 and 7.5.  Inorganic builders, e.g. sodium sulphate and hexametaphosphate may also be included.
Patent GB-1003699-A (GB)
Title: A method of and electronic devices for the measurement of the relative axial displacement of two members such as a rotor and a stator of a turbine
Inventor: HOLZ ROBERT GUSTAVE
IPC: G01H1/00
Filed: 1961-11-07
Abstract: 1,003,699. Measuring dimensions. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Nov. 7, 1961 [Nov. 7 1960], No.39809/61. Heading G1N. [Also in Division F1] In a method of measurement of the relative axial displacement of two members which are angularly rotatable about an axis, for example the rotor and stator of a turbine, two reference lines dispbsed at an angle to each other and to a transverse plane normal to the axis are provided on the periphery of one member and an element is provided on the periphery of the other member in a transverse plane which crosses the two reference lines, and the time interval between the two instants when the element passes the two reference lines is measured automatically, the time interval being a measure of the relative axial displacement of the two members. In the embodiment shown, two electrodes are provided, the first indicated by numeral 1 being secured to the inner surface of the stator casing 2 surrounding a row of rotor blades 4, and the second, 3 being mounted at the tip of a rotor blade. The electrode 1 is of Z- shape comprising two straight parallel portions disposed parallel to the axis of the turbine and a third portion connecting the two parallel portions and disposed at 45 degrees thereto. The electrode 1 is connected to a source of current 6, also through an amplifier 10 and shaping stage 12 to and oscilloscope 16. The electrode 3 is connected to earth through the rotor. As the electrode 3 passes the electrode 1, these impulses 17 will show on the oscilloscope as indicated in Fig. 2, the distance between the first and third impulses fixing a measure of the rotational speed of the turbine and being constant for a constant speed, while the distance between the second and first or third impulses gives an indication of the relative axial portions of the rotor and stator.
Patent GB-1217789-A (GB)
Title: A method of milling and an abrasive milling head for numerically controlled apparatus
IPC: B24B21/00
Filed: 1968-08-21
Abstract: 1,217,789. Grinding. CORNING GLASS WORKS. 21 Aug., 1968 [22 Aug., 1967], No. 39904/68. Heading B3D. A head for abrasively milling a curved surface 14a on a workpiece 14 and adapted for attachment to a milling machine which is controlled by numerically controlled signals and has a work-table for supporting the workpiece comprises an endless abrasive belt 55 which is driven by a motor 40 about a plurality of rollers 18, 19, 20, 21 and a wheel 42, the wheel having the configuration of the centre segment of a sphere, and means 29 acting on one of the rollers to apply tension to the belt. The workpiece may be a plunger used for press forming glass viewing panels, such as television tubes. The hand consists of a pair of plates 16, 16f which are secured to the machine 11 by bolts 17. The plates carry a bracket 23 for roller 18, a slide 26 for a bracket 24 which carries roller 19 and can be moved by a fluid pressure cylinder 29 to tension the belt, a bracket 34 for a pivot 33 secured to a bracket 32 which carries the roller 32 and is adjustable by a screw 37 about the axis of the pivot to adjust the tracking of the belt, and the motor 40 for driving roller 21 for imparting drive to the belt. The plates also carry a block 45 in which is a pivot 44 carrying a bracket 44 for the wheel 42, the pivot being clampable in adjusted position by nut 44d. The outer rim of the wheel 42 may be provided with a slightly resilient tyre and is in the form of the centre portion of a sphere so that during the forming of the curved surface 14a on the workpiece, the belt always makes tangential contact with said surface. Either the hand or the worktable may be moved in three dimensions in at continuous path by a unit 10 of a numerical control system.
Patent GB-1270972-A (GB)
Title: Improvements in or relating to electrodynamic rotating machines for alternating current working
Inventor: GRAY JOHN
IPC: H02K57/00
Filed: 1969-04-15
Abstract: 1,270,972. Electric motors. J. BRAY. 24 June, 1970 [15 April, 1969; 9 Aug., 1969], Nos. 19150/69 and 39927/69. Heading H2A. A statorless A.C. motor comprises a circular rotor plate 1 having an even number of circumferential slots through adjacent ones of which a magnetic flux is axially and oppositely directed by a magnetic circuit 2 rotating with the plate and separated from the sides of the slots by gaps, transverse gaps 8 also being provided in the magnetic circuit on opposite sides of each slot. As shown, the plate has two slots and the gaps between them and the magnetic circuit, which may be permanently magnetized or excited by coils 4, are filled with insulating material 7. It is stated that when single-phase A.C. is supplied to diametrically opposed brushes 5, 6 contacting the plate, the latter rotates synchronously. Other embodiments employing a rotor plate with four slots and an appropriate number of brushes for single and three phase working are described.
Patent GB-875882-A (GB)
Title: Monoazo pigment dyestuffs
IPC: C09B63/00
Filed: 1958-12-11
Abstract: The invention comprises monoazo pigment dyestuffs of formula:-R-N=N-R1 wherein R is the radical of a 5-nitro- 2-amino-benzene- 1-carboxylic acid amide in which the nitrogen atom of the amide group is disubstituted and R1 is the radical of an azo component, and wherein any carboxylic or sulphonic acids groups present in the azo component radical R1 of the dyestuff have been reacted with polyvalent metallic compounds to give lakes.  The dyes are prepared in the usual manner and when the product contains sulphonic and/or carboxylic acid groups the dye is reacted with, for example, a water-soluble salt of calcium, magnesium, barium, strontium, aluminium, zinc, cadmium, lead or manganese.  The dyes and lakes are used for colouring lacquers and plastics and for the pigment dyeing of paper or textiles in brown, red, orange and yellow shades.  In examples: (1) 5-nitro- 2-aminobenzene- 1-carboxylic acid dimethylamide is diazotized and coupled in acetic acid medium with 1-(21 : 31-hydroxynaphthoylamino)- 4-chloro- 2 : 5-dimethoxybenzene; in similar examples the following additional components are specified:-5-nitro- 2-aminobenzene-1-carboxylic acid-morpholide or -piperidide or -diethylamide or -N-methyl- N-phenylamide and the 1-(21 : 31-hydroxynaphthoylamino) derivatives of -4-chloro- 2-methylbenzene, 2-methylbenzene, 2-ethoxybenzene, 2 : 6-dimethylbenzene, 2-methyl-4-methoxybenzene, 4-methoxybenzene and 5-chloro- 2 : 4-dimethoxybenzene, 1-acetoacetylamino- 2 : 5-dimethoxy- 4-chlorobenzene, acetoacetylamino- 2-methoxybenzene, and 1-phenyl-or -(21 : 51-dichlorophenyl)- 3-methyl- 5-pyrazolone; (2) the dyestuff 5-nitro- 2-aminobenzene- 1-carboxylic acid dimethylamide --> 1-(41-sulpho-phenyl)- 3-methyl- 5-pyrazolone is treated with barium chloride in aqueous acetic acid; in similar examples the following additional components are specified:-5-nitro- 2-aminobenzene- 1-carboxylic acid-diethylamide or -piperidide or -N-methyl- N-phenylamide and 2-naphthol-3 : 6-disulphonic acid, 2-naphthol- 7-sulphonic acid, 1-naphthol- 4-sulphonic acid, 2-naphthol-3-carboxylic acid and 1-(31-sulphophenyl)- 3-methyl- 5-pyrazolone.
Patent GB-1142924-A (GB)
Title: Apparatus for reducing radiation exposure of aeroplane pilots
Inventor: SCHLOBIES CHRISTOPH
IPC: G01T1/29
Filed: 1967-09-04
Abstract: 1,142,924. Nuclear radiation direction finder and shielding mechanism. ENTWICKLUNGSRING SœD G.m.b.H. 4 Sept., 1967 [19 Sept.. 1966], No. 40335/67. Headings H4D and H5R. Gamma radiation in an aircraft compartment (e.g. the cockpit), from a nuclear explosion, is reduced by determining in a known manner utilizing spaced detectors in or on the aircraft the direction of the radiation and automatically controlling, in accordance with such determination, the aircraft to place maximum speciallyprovided or inherent (e.g. fuel tanks) radiation absorption between the compartment and the explosion.