baber/WOPTO huggingface dataset:
Patent GB-172528-A (GB)
Title: Improvements in thread cutting machines, lathes and the like
IPC: B23Q5/40
Filed: 1920-12-14
Abstract: 172,528. Martin, P. W. Dec. 14, 1920. Milling - lathes. -A screw-thread, such as an internal thread on a shell, is cut off by a cutter 6 rotated by a pulley 8. The cutter is advanced into the work by the usual rack and pinion gear 13, and a lever-operated screw 21 is then rotated, which clamps two jaws 19, 20, on the carriage 10, to a bar 18 which is attached to the nut 17 on the lead screw 15. The cutter is then fed laterally to the work by a hand-operated micrometer screw 22. The clamping arrangement may be between the bar and the nut 17, in which case the bar is fixed to the carriage 10.
Patent GB-659822-A (GB)
Title: Improvements in and relating to the forging of articles from metal rod
IPC: B21K21/02
Filed: 1947-12-31
Abstract: 659,822. Making discs; forging-dies; forging- machines; shearing. HATEBUR, F. B. Dec. 31, 1947, No. 35224. Convention date, Aug. 21, 1942. [Classes 83 (ii) and 83 (iv)] In forging disc-like metal articles from metal rod, a length B thereof is fed through a stationary die 10 towards a die 13 moved towards the die 10 during the feeding operation. A rod R, Fig. 2, is fed through a die 6 against a stop 16 and between dies 5, 5<SP>1</SP>. These are then closed and the die 6 is moved up to shear the rod partially, Fig. 4. The shear is completed and the blank B is moved into line with the die 10 by moving up the dies 5, 5<SP>1</SP>, a ram 15 being moved to the right to clear the dies 5, 5<SP>1</SP>. The stop 16 which moves with the dies 5, 5<SP>1</SP> is then moved to the left to transfer the blank B to a sleeve 8 in which it is held by a pin 9, Fig. 1. The stop 16 and dies 5, 5<SP>1</SP> are then returned and the ram 15 is moved to the left, Fig. 2. After a short time and while the ram is still moving, the die 13 is moved, more slowly than the die 15, to the right to upset the blank into a recess enclosed also by a sleeve 12 which is moved to the right to engage the die 10. The ram 15 finally projects slightly from the die 10 and the final movement of the die 13 forces it back until it is flush with the face of the die 10, Fig. 4. When the die 13 is moved to the left the ram is also moved to free the article P from the die 10 and it is freed from the die 13 by a stripper a. The faces of the dies 10, 13 may have a number of circular steps, not shown, on their faces 14, 14'. Specification 659,823 is referred to,
Patent GB-780973-A (GB)
Title: Method and apparatus for making shoes
IPC: A43D8/04
Filed: 1953-12-21
Abstract: 780,973. Preforming toe portions of shoes. FELLMAYER, F., [trading as ECONOMY DIE MAKERS]. Dec. 21, 1953 [March 16, 1953], No. 35439/53. Class 17(1) An apparatus for preforming toe portions of shoes has a toe die 12, a normally spaced wiping die 14 with a wiping face 15 for co-operation with the front marginal edge portion 16 of the toe die, means to actuate the dies relatively to each other with a wiping motion to juxtapose the wiping face and the margin 16 and to urge the dies into closer relation to exert pressure therebetween, means 13 &c. for heating at least one of the dies, and means for releasing the dies from the closer relation and returning them to their normal position. Die 12 is rigidly mounted on a post 11, while die 14 is secured to a second carrier 24, 25, 26, 27, 28, Fig. 9, movable horizontally on a first carrier 19, 20, 21 Fig. 1, 22, 23, Fig. 9, which is movable vertically about a fixed post by members 48, 44, 42, Fig. 1, 37, 33 and 30 (not shown). A head 57, Fig. 1, and rods 58 on member 24 pass through a guide member 56 on member 23, and springs 56a are compressed between members 56, 24, tending to push member 24 and die 14 towards die 12 and urging a roller 61 on head 57 against a vertical post 59. As the first carrier is raised it moves roller 61 upwardly on post 59 until it engages portion 60, permitting springs 56a to move die 14 into contact with die 12. The combined vertical and horizontal movement of die 14 constitutes a wiping movement. The movement of the second carrier moves arms 51, 54, connected to the fixed member 52 on member 23 and to the second carrier at 55, towards alignment and raises rod 49. Cranks 37 then engage rod 49, and as pedal 48 is further depressed the cranks raise rod 49 further, first straightening arms 51, 54, to press die 14 towards die 12 with a much greater force, and then moving the arms beyond alignment to a locking position. Arms 51, 54 are released by a finger 72, Fig. 5, on a lever 70 when the latter is manually depressed. The heightwise position of the second carrier at which the latter is moved horizontally is determined by vertical adjustment of post 59, and hence cam 60, the post being locked by screw 62. The pressing pressure is controlled by adjusting the distance between slide 56 and member 24 by means of nuts 75 and bolt 76, Fig. 1.
Patent GB-447429-A (GB)
Title: An improved ball or float valve
IPC: F16K31/26
Filed: 1934-12-11
Abstract: 447,429. Ball valves. BOORER, G. W., Sunnyside, New House Lane, Salford, near Redhill, Surrey. Dec. 11, 1934, No. 35505. [Class 135] In a cistern-supply ball or float valve having a conical ended jumper B seating against a rubber bush, a seating-bush A of substantial length is made cylindrical, is provided with a uniform bore, and is fitted in a recess in the part C of the valve casing which is secured to the cistern. Specification 18451 /14, [Class 135], is referred to.
Patent GB-1214364-A (GB)
Title: Electrophotographic materials
Inventor: MERRILL STEWART HENRY
IPC: G03G5/05
Filed: 1968-07-25
Abstract: 1,214,364. Photoconductive composition. EASTMAN KODAK CO. 25 July, 1968 [31 July, 1967], No. 35564/68. Heading H1K. [Also in Division C3] A photoconductive composition comprises a photoconductor and a binder wherein the binder comprises a polymer having nuclear substituted vinyl haloaryloate units. Preferably the binder is a copolymer containing both wherein X is a halosubstituted aryl group and Y is an alkyl group having 1-8 C atoms. For the vinyl haloaryloate unit the substituent on the vinyl group may be chloro-, fluoro-, bromo- or iodo-benzoate, or bromonaphthoate but 2,4-dichlorobenzoate is also mentioned. The second monomer for the copolymer may be vinyl acetate. The photo-conductors exemplified are 4,4<SP>1 </SP>- benzylidine - bis(N,N - diethyl - mtoluidine); bis 4 - (diethylamino) - 1,1,1, - triphenylethane; bis 4 - (diethylamino) tetraphenyl methane and 4, 4<SP>1 </SP>- bis(diphenylamino)- chalcone but may others are listed. Sensitizers for the photoconductor are listed but those exemplified are 2,4 - di(4 - ethoxyphenyl) - 6 - (4- n - amyloxystyryl)pyrylium fluoroborate and 6 - chloro - 1<SP>1</SP> - methyl - 1,2<SP>1</SP>,3<SP>1</SP>, - triphenylimidazo[4,5,b] - quinoxalino - 31 - indolcarbocyanine - p - toluenesulphonate. The composition may be coated on a plate or foil of Al, Zn, Cu, brass, N: or galvanized iron, paper, paper- Al laminate or a support coated with a conductive layer of a carboxyester lactone. Single or multiple layers of the composition may be built up and the layers may be separated or covered by insulating layers.
Patent GB-909115-A (GB)
Title: Production of polymerisation catalysts
IPC: C08F10/00
Filed: 1958-11-06
Abstract: Olefinic monomers, particularly ethylene, are polymerized, other than in presence of a preformed polymer, with a modified Ziegler-type catalyst prepared by treating such catalyst produced from a reducible polyvalent metal compound and a reducing metal compound with a phenol.  A list of suitable phenols is given; the preferred catalyst components are (a) a compound R2A1X in which R is alkyl, cycloalkyl or aryl and (b) a chloride, bromide or iodide of titanium or zirconium.
Patent GB-1205503-A (GB)
Title: Multiple valve for dental units
IPC: A61C1/00
Filed: 1968-07-26
Abstract: 1,205,503. Multiple valve for dental units. COASTAL DYNAMICS CORP. 26 July, 1968 [20 March, 1968], No. 35716/68. Heading A5R. [Also in Division F2] Dental equipment for controlling fluid flow for drilling, cleaning, &c. includes a multiple valve and a foot-operable three-position valve (38), Fig. 1, (not shown) for the selection of driving air, cleansing air, and water, and a retractable hose device adapted to provide means for closing the multiple valve. The valve comprises a block 19 with three guide bores 51, 61, 66 slidably receiving three valve bodies 52, 62, 67 having axially extending stems projecting normally from a face (25), and capable of being urged inwardly by a closure plate (20) when the plate itself is pivoted downwardly by contact with the bracelet portion (11 b) of the retractable hose means in its fully retracted position. The valve block has three inlet passages 48, 58, 63 for connection to the foot valve (38) communicating with the guide bores, and three outlet passages 50, 60, 65 for connection to the retractable hose outlets, also communicating with the guide bores. The valve bodies 52, 62, 67 block communication between inlet and outlet passages when urged inwardly by the closure plate, and are movable by air pressure, water pressure &c. when the retractable hose device is pulled from the unit. Driving air pressure may be varied by means of an adjustible screw 30, the pressure being measured on a guage (33). If several multiple valves are included in a dental unit, one guage may be used to measure the air pressure from whichever valve is in use via passages and check valve 54.
Patent GB-464655-A (GB)
Title: Improved abrasion-resistant rubber articles, and method of manufacturing the same
IPC: B29C70/58
Filed: 1935-12-24
Abstract: 464,655. Rubber articles. RESEARCH ASSOCIATION OF BRITISH RUBBER MANUFACTURERS, and SCOTT, J. R. Dec. 24, 1935, No. 35733. [Class 70] Rubber soles and heels, tyres, conveyer belting, brake linings &c., are made from calendered or extruded rubber so disposed that the wearing surface is inclined at a considerable angle (preferably a right-angle) to the plane of the sheet or direction of extrusion. The unvulcanized rubber mix may be extruded through a die having the shape of the article e.g. a sole, and then sliced, or sheets may be superposed, or rolled up and cut so that she exposed edges form the wearing surface. Alternatively, calendered unvulcanized sheet may be cut into transverse or longitudinal strips, Fig. 3, which are rotated through 90‹ and reunited ; or sheet may be folded on itself to form a thick sheet, Fig. 6. The wearing properties of the articles are further improved by the inclusion of anisotropic fillers, e.g. light magnesium carbonate, china clay or talc.
Patent GB-1105714-A (GB)
Title: Measuring apparatus for determining the concentration of paramagnetic gases
Inventor: FLEMMING HANS
IPC: G01N27/74
Filed: 1966-08-10
Abstract: 1,105,714. Measuring gas concentration magnetically. INSTITUT FUR REGELUNGSTECHNIK. Aug. 10, 1966, No.35766/66. Heading G1N. The concentration of a paramagnetic gas, e.g. oxygen or nitric oxide, is measured by alternately placing between the poles 2, 3, Fig. 1, of a permanent magnet, the gas and a solid body 5, see also Fig. 2 (not shown), of known susceptibility. Changes in the flux in the magnetic circuit are detected by a coil 10 whose output, having the form of an A. C. signal whose amplitude is proportional to the flux change and therefore indicative of the difference in susceptibility of the gas and body 5, gives a measure of the concentration of the paramegnetic gas present. In the embodiment, the gas flows between the poles at a high constant pressure within an enclosure 6 via inlet 7 and outlet 8. It is intermittently displaced from the gap by a rotating segmental disc 5 whose susceptibility is lower than that of the gas.
Patent GB-1390370-A (GB)
Title: Process for manufacturing aminoplast precondensates
IPC: C08G12/10
Filed: 1972-08-01
Abstract: 1390370 Preparation of aminoplast precondensates BRITISH INDUSTRIAL PLASTICS Ltd 1 Aug 1972 [5 Aug 1971] 35822/72 Heading C3R  An aminoplast precondensate is prepared by heating, e.g. at 50-90 C., urea or thiourea with paraformaldehyde and hexamethylene tetramine in the absence of a solvent, in the molar ratio 1 : 1À1-25 : 0À01-0À2, and dehydrating the product to obtain an amorphous solid of softening point 60-100 C. The powdered product may be mixed with a filler and a hardener and granulated, e.g. using a heated extrusion kneader at 70-100 C.; the preferred weight ratio of these components is 70 : 20-40 : 0À01- 0-2, preferably with 0À1-0À4 p.b.w. of a metal stearate mould release agent, together with a colorant. Suitable fillers include paper pulp, wood flour, alpha cellulose and mineral and glass fibres; suitable hardeners include NH 4 Cl, NH 2 SO 3 NHEt 3 , p-toluene sulphonic acid and its triethylamine salt, phthalic anhydride and benzoic acid. The condensation may be catalyzed with NH 4 SO 3 NH 2  or ethylene sulphite. In Examples 1-4 urea or thiourea is heated at 80 or 90 C. for 1-3 hrs. with 1À5-2 mols. of paraformaldehyde and 0À005-0À04 mols. of hexamethylene tetramine per mol. of urea or thiourea, and dehydrated at 20-50 mm.Hg and 50 C.; the products are mixed with paper pulp or wood flour, NH 4 Cl or phthalic anhydride, Zn stearate or Zn/Cd stearate, and TiO 2  or nigrosine, and granulated. In Example 5 the reagents are condensed at 55-65 C. in the presence of ammonium sulphamate to give granules of precondensate which are ground and kneaded with cellulose, hexamethylene tetramine, polypropylene glycol and finally Zn stearate.
Patent GB-1285488-A (GB)
Title: Integrated circuits for ac line operation
IPC: H01L21/822
Filed: 1970-07-24
Abstract: 1285488 8emi-conductor devices RCA CORPORATION 24 July 1970 [11 Aug 1969] 35939/70 Heading H1K In a device for rectifying an A.C. supply (e.g. for an I.C.) comprising a diode formed within an island separated from the substrate by an isolating junction, if the return terminal of the supply is connected directly to the substrate the isolating junction becomes forward biased on alternate half cycles. To overcome this the return terminal is connected to a region of opposite conductivity type formed on the substrate to provide a reversely poled PN junction in series with the isolating junction. As shown, Fig. 1, a P-type substrate 24 is provided with an N+-type region 26 which diffuses into the lower surface of an N-type epitaxial layer 28, 30, 31, 32 formed on the substrate. P<SP>+</SP>-type isolation diffusion regions 34, 36, 38 are provided and an N<SP>+</SP>-type ring 42 contacting the buried layer 26 is provided by a deep diffusion followed by a shallow diffusion. A P-type region 40 is formed within the N<SP>+</SP>-type ring 42, an N<SP>+</SP>- type region 48 is formed within region 40 and an N<SP>+</SP>-type region 50 formed in a separate isolated part 30 of the epitaxial layer. Contacts are applied by evaporation or plating of Al over a silicon oxide or nitride layer 58, 60, 62, 64, 66. The P-type region 40 is connected to one terminal 16 of an A.C. supply via an external resistor 22 and the inset N<SP>+</SP>-type region 48 is connected to a capacitor 18 and a load circuit 20, which may form part of the same integrated circuit. The regions 40 and 48 form a diode 70, Fig. 2, which rectifies the A.C. supply. The N+-type ring 42 surrounding region 40 is provided to interrupt parasitic SCR action and is connected to P-type region 40 by track 52. The junction between the substrate 24 and N+ region 26 forms a parasitic diode 74 which would conduct on alternate half cycles if the substrate was connected directly to the earthed terminal 14 of the A.C. power supply. In order to prevent this happening a diode 72,-constituted by substrate 24 and isolated N-type region 30, is inserted in the connection between terminal 14 and the substrate 24. When terminal 16 is positive relative to terminal 14 diode 70 conducts charging capacitor 18, and diode 72 holds the substrate at earth potential. When terminal 16 is negative relative to terminal 14 diodes 70 and 72 are reverse biased so that no current flows through parasitic diode 74.
Patent GB-406116-A (GB)
Title: Process for the production of sulphuric acid
IPC: G04C3/06
Filed: 1932-12-19
Abstract: 406,116. Sulphuric acid. METALLGES. AKT.-GES., 45, Bockenheimer Anlage, Frankfort-on-Main, Germany. Dec. 19, 1932, Nos. 35942, 35943, 35944, and 35945. Convention dates, Dec. 18, 1931, Feb. 13, 1932, June 1, 1932, and June 22, 1932. Drawings to Specification. [Class 1 (i).] A mixture of sulphur dioxide-containing gases, air, and at least sufficient water vapour to hydrate the whole of the sulphur trioxide produced is passed over a water-insensitive vanadium catalyst at a temperature of 380- 550‹ C. and the reacted gases are condensed by indirect cooling or by the direct action of concentrated sulphuric acid. Condensation commences at about 380‹ C., and between that temperature and 140‹ C. the rate of cooling should be uniform throughout the gas and the time of cooling through this range must not be less than 0.5 seconds. The condensation is preferably effected in towers charged with filters, in which the gas flows in counter-current to the condensate, and it may be performed fractionally, whereby the greater part of the acid is obtained of a strength exceeding 90 per cent. Gases containing very small proportions of sulphur dioxide may be employed, the temperature of the contact chamber being maintained if necessary by an admixture of hot combustion gases or even of combustible gases such as carbon monoxide which are oxidised by the contact mass. Gases containing hydrogen sulphide may be used as raw material and may be either burnt before admission to the contact chamber or oxidized by the contact mass itself. Hydrogen sulphide obtained by washing coke oven gas may thus be utilized. In this case the surplus heat of the contact process may be utilized for expelling the hydrogen sulphide from the washing liquid, and the sulphuric acid produced may be employed for washing the ammonia out of the desulphurized coke-oven gas.
Patent GB-794849-A (GB)
Title: New anthraquinone vat dyestuffs and process for making them
IPC: C09B5/28
Filed: 1955-12-14
Abstract: Dyes are made by carbazolizing in presence of a tertiary base the products obtained by treating a 1-aminoanthraquinone having a free 4-position with manganese dioxide, chromium trioxide, or an alkali metal bichromate in aqueous sulphuric acid, or a product obtainable therefrom by reduction of the: <FORM:0794849/IV (b)/1> groupings (c.f. Specification 368,789, [Group IV]).  Before carbazolizing, the products may be acylated or reacted with a compound containing an exchangeable halogen atom.  Reduction may be effected with stannous chloride and hydrochloric acid. Acylation may be effected with e.g. acetyl chloride, pyridine carboxylic acid chloride, benzoyl chloride, p-chlorbenzoyl chloride, and compounds with exchangeable halogen include benzyl chloride, cyanuric chloride, a - and b -halogen-anthraquinones, dihalogenanthraquinones, Bz - bromobenzanthrones, bromo - dibenzpyrenequinones, halogenanthraquinonebenzacridones, bromopyranthrones, bromoanthanthrones, bromobenzanthrones and chlorquinazolines. Carbazolizing agents specified are aluminium and titanium chlorides and tertiary bases specified are pyridine, the picolines, quinoline, acridine.  The products may be used as pigments, or for dyeing or printing cotton or viscose grey shades. They may be used as leuco-sulphuric ester salts.  In examples: (1) the product obtained by reacting 1-aminoanthraquinone with aqueous sulphuric acid and either manganese dioxide or sodium or potassium bichromate is carbazolized with aluminium chloride and pyridine either directly or after reduction with stannous chloride or condensation with benzoyl chloride, 4-chloranthaquinone - 1(N):2:11:21(N) - benzacridone, 1-chloranthraquinone, Bz.1 - brombenzanthrone, 2.7 - dibromanthanthrone, or tetrabrompyranthrone; (2) 1-amino-8-chloranthraquinone is reacted with aqueous sulphuric acid and manganese dioxide, followed by reduction of the product with stannous chloride, and carbazolization as above.
Patent GB-805087-A (GB)
Title: Improvements in and relating to means controlling the supply of fuel to combustion turbine engines
IPC: F02C9/16
Filed: 1956-11-23
Abstract: 805,087. Gas turbine plant. BLACKBURN & GENERAL AIRCRAFT Ltd., and COUPE, N. P. Nov. 23, 1956, No. 35953/56. Class 110 (3). A gas turbine fuel control system comprises a pump feeding a turbine through a pressurizing valve and a shut-off valve and a branch leading from between these valves to the pump intake containing two parallel paths one of which contains a normally open valve and a pressuresensitive valve with a by-pass and the other a pressure-sensitive valve of different rating with a by-pass. The arrangement is such that at starting, the first pressure-sensitive valve controls the fuel supply to that required for idle speed running while on closing the normally open valve in that path the other pressuresensitive valve controls the fuel supply to that required for rated engine operation. Fuel is supplied by a pump 1 to the engine through a pressurizing valve 2 and a shut-off valve 3. A branch line leading from between the valve 2, 3 to the inlet of the pump has two parallel paths. One of the paths contains a normally open valve 4, preferably solenoid-operated, a pressuresensitive valve 5 and a by-pass with an adjustable bleed screw. The other path contains a pressure-sensitive valve 6 and a by-pass with an adjustable bleed. The preloading of the valves 5, 6 is adjustable and arranged so that the preload on the valve 6 is higher than that on the valve 5. Another branch from between the pump 1 and valve 2 leads to a torch igniter through a shut-off valve 8. An altitude compensator 7 varies the pressure in the system in accordance with altitude. When the engine is started, the fuel pressure builds up until the valve 2 is opened. At this time the valves 5 and 6 are shut and the fuel reaching the engine is the output of the pump less that taken to the torch igniter and that spilled through the bypass of the valve 5. Fuel in excess of that required at idling speed is spilled on opening of the valve 5 due to the increase of fuel pressure. To run the engine at its rated speed, the valve 4 is closed and all the fuel supplied to the engine except that spilled through the by-pass of the valve 6. After acceleration of the engine, the valve 6 opens to spill fuel in excess of the engine requirements at rated speed. Specification 804,767 is referred to.
Patent GB-412213-A (GB)
Title: Improvements in and relating to heavy oil burners
IPC: F23N1/02
Filed: 1932-12-19
Abstract: 412,213. Liquid-fuel burners. BENTLEY, H., Plantation House, Hull Road, York. Dec. 19, 1932, No. 36011. [Class 75 (i).] A heavy-oil burner 1 of the high pressure atomizing type, for use with a steam generator, is supplied with air and oil by a blower or fan 3 and a pump 4 driven by electric motors controlled by a switch 13 operated by the pressure or temperature in the steam generator, the pump 4 being fitted with a spill-valve which is maintained open by a spring 8 to prevent fuel from entering the pump chamber until the pump reaches such a speed that a governor 9 on the pump shaft operates a switch 10 to close the circuit to a solenoid 7 shutting the valve. A sparking plug 22 for igniting the fuel may be included in either of the main circuits. The burner is preferably of appreciably larger capacity than the demand likely to be put on it.