baber/WOPTO huggingface dataset:
Patent GB-582306-A (GB)
Title: Improvements relating to screws and bolts and in the manufacture thereof
IPC: F16B25/00
Filed: 1944-09-13
Abstract: 582,306. Self-tapping screws. FAN DISC, Ltd., BAEDEKER, A. E., and KILLEEN, L. W. Sept 13, 1944, No. 17536. [Classes 83 (ii) and 83 (iii)] Self-tapping screws have a tapered leading end in which a number of longitudinal grooves, preferably not less than four, are cut, the sides of the grooves 14 that form the leading edges of the intervening ribs being so inclined to a radial plane that a continuation would pass to that side of the axis which is towards the groove. The other sides 16 of the groove are preferably tangential to the core. The grooves are cut by a broaching-die relieved to form a substantially spherical part 17. The throat 19 is short, has teeth 21 corresponding to the grooves to be cut, and is followed by a clearance bore 20. The threads of the screws are preferably rolled and after grooving are hardened, preferably case-hardened, round the tapping part.
Patent GB-278112-A (GB)
Title: Improvements in and relating to the manufacture of dyestuffs and intermediates
IPC: C07C45/64
Filed: 1926-07-13
Abstract: 278,112. Thomson, R. F., Thomas, J., and Scottish Dyes, Ltd. July 13, 1926. Oxy- and alkoxybenzanthrone; dibenzanthronyl; dibenzanthrone dyes. - The process of Specification 251,313, according to which a mixture of an oxybenzanthrone and a dibenzanthronyl is obtained by oxidizing benzanthrone in sulphuric acid solution, is modified by effecting the said oxidation at low temperatures such as 0‹ C. The dibenzanthronyl may be converted by alkali fusion into a pure form of dibenzanthrone; the oxybenzanthrone may be alkylated and subsequently subjected to alkali fusion to obtain dialkoxydibenzanthrones. According to an example benzanthrone is treated with ,a solution of manganese dioxide in concentrated sulphuric acid at 0‹ C. or lower temperature; the product is boiled with bisulphite and freed from oxybenzanthrone by caustic alkali and from any residual benzanthrone by means of acetone or benzene.
Patent GB-1459842-A (GB)
Title: Aqueous primer composition
IPC: C09D161/10
Filed: 1974-04-29
Abstract: 1459842 Aqueous synthetic resin primer composition UNION CARBIDE CORP 29 April 1974 [30 April 1973] 17787/74 Headings C3R and C3P A metal primer composition comprises an aqueous blend of: (a) an acrylate copolymer resin latex wherein the copolymer contains at least 2 wt. per cent of at least one polymerized monomer that contains a functional group capable of reacting with a methylol group; and (b) an aqueous dispersion of a resole comprising the alkaline-catalyzed condensation product of 2,2-bis(4-hydroxyphenyl)- propane and HCHO, wherein the resole has a weight average M.Wt. of from 300 to 5000, and comprises particles substantially all of which have diameters of less than 60 microns, wherein the acrylate copolymer is an alkyl acrylate or methacrylate copolymer, and the functional group is an amino, amido, ureido, carboxy, alcoholic hydroxyl, e.g. methylol, methoxymethyl or epoxy group. The composition preferably contains 2-60 wt. per cent resole and 40-98 wt. per cent acrylate copolymer, based on the weight of the resole and acrylate copolymer on a solids basis, and may additionally comprise up to 60% wt. of a pigment or filler. In a preferred embodiment the primer composition is made by condensing a mixture of bisphenol A and from 0-50 wt. per cent of a difunctional monohydric phenol, e.g. a parasubstituted phenol, with 1-3 moles of HCHO in the presence of 0À01-1 mole of an alkaline catalyst per mole of phenol mixture, adding to the condensation product obtained a mixture of from 0À5-12 p.b.w. per 100 p.b.w. of phenol mixture a mixture of gum arabic and one or more polysaccharide gums having mannose and galactose units or D-mannuronic and L-guluronic acid units, wherein the weight ratio of gum arabic to the other gums is from 0À5 : 1 to 20 : 1, adjusting the pH of the resultant dispersion if necessary to 3-7À5, and optionally further condensing the resin, and then blending the aqueous dispersion with the acrylate copolymer resin latex. In the examples primer compositions are prepared from (i) a latex copolymer of styrene, ethyl acrylate, acrylic acid and optionally neopentyl glycol diacrylate, and (ii) an aqueous phenolic resin dispersion which is either of a bisphenol A-HCHO resin or of a bisphenol-A/t-butyl phenol/HCHO resin each prepared in the presence of gum arabic and "Jaguar" gum (R.T.M.), and (iii) CH 3 COO(CH 2 CH 2 O) 2 CH 2 CH 3  and optionally TiO 2  pigment, zinc phosphate and a defoamer. The primers are cast on to phosphated steel and cured and then overcoated with a white pigmented thermosetting acrylic resin and rebaked.
Patent GB-1317501-A (GB)
Title: Fabrication of an insulating pane unit
IPC: C03C27/12
Filed: 1971-05-28
Abstract: 1317501 Shearing BOUSSOIS SOUCHON NEUVESEL 28 May 1971 [16 June 1970] 17873/71 Heading B3W [Also in Division C1] A cutting device 16 for cutting metal strip P, a cutting key 108 on the end of a slide block 107 with a rigid roller 105 sliding in a cam slot 103 in a plate 102 mounted on a block 100 for slide movement vertically by jack 101. To a similar slide block 109 with roller 106 in cam slot 104 is secured by pin 110 a support 111 with stop 112, the support 111 being rotatably mounted on a pin 113 on block 100. Also rotatable about pin 113 is a blade holder 114 with cutting blade 115, the holder 114 being movable by a roller (116) sliding between guide plates (117) on plate 102 and joined by a link arm (118) keyed to pin 113. Upward movement of plate 102 by jack 101 causes the stop 112 to move up against the strip P on the opposite side to the cutting key 108 and blade 115 then engages and cuts the strip. Cutting key 108 has the form of a comb to allow for different width strips P and blade 115 has inclined cutting edges 115a and 115b.
Patent GB-374642-A (GB)
Title: Improvements in or relating to sheet metal lids or covers for bottles and like containers
IPC: B65D41/04
Filed: 1931-06-22
Abstract: 374,642. Stoppers for bottles &c. KENDALL, G. C., Unity Works, Vittoria Street, Birmingham. June 22, 1931, No. 17953. [Class 125 (iii).] A sheet metal lid for bottles &c., is made by subjecting a flanged blank to stamping or pressing operations, whereby the central portion of the disc-like top 5b is first depressed below and then returned to or nearly to the level of the undepressed marginal part 5d so as to provide a circular groove 5f for the reception of the inner peripheral portion of a sealing- ring 6.
Patent GB-800703-A (GB)
Title: Process for the production of cyanuric chloride
Filed: 1956-06-11
Abstract: Cyanuric chloride is produced by trimerizing cyanogen chloride dissolved in dimethyl ether containing hydrogen chloride.  The reaction medium contains at least 15 per cent HCl and is, preferably, an azeotropic mixture containing 29-49 per cent HCl. The trimerization may be carried out at atmospheric, or elevated, pressure, usually below 10 atmospheres, and at -15 DEG  to +100 DEG C., preferably -4 DEG  to + 50 DEG  C.  The cyanogen chloride may be added all at once, or gradually, in a ratio by weight to the reaction medium 1:0.2 to 1:10, preferably 1:0.8 to 1:2.5.  The solution may be refluxed during trimerization to extract heat, or a cooling coil may be used.  The cyanuric chloride is precipitated and may be separated by filtration or distillation.  The reaction medium is prepared by passing HCl gas into liquid dimethyl ether, or by passing HCl gas and dimethyl ether vapour through a cooler to condense the mixture.
Patent GB-463367-A (GB)
Title: Improvements in or relating to rotary brushes
IPC: A46B13/00
Filed: 1936-06-29
Abstract: 463,367. Rotary brushes. NIELSEN, L. H., NIELSEN, R., NIELSEN, A., and NIELSEN, H. H. June 29, 1936, No. 17996. [Class 19] The brush consists o an assembly of brusl rings d mounted be tween flanges f, g on a hub a. The hub parts between recesses b forn radial vanes which force air entering at h outwardly through channels c in the brush so as to cool it and prevent undue wear.
Patent GB-546034-A (GB)
Title: Improvements in or relating to sulphur burners
IPC: C01B17/54
Filed: 1940-12-23
Abstract: 546,034. Sulphur dioxide. DU PONT DE NEMOURS & CO., E. I. Dec. 23, 1940, No. 18014. Convention date, Dec. 23, 1939. [Class 1 (ii)] [Also in Group XIII] Sulphur is fed through openings 17 in the roof of a furnace on to an inclined hearth 6 upon which it flows in a thin film and is vaporized by the combustion of the sulphur vapour with oxygen in the combustion chamber 3 below. The hearth 6 is supported on pillars 7 arranged in staggered relation and may have a plane or corrugated surface. Its lower end 11 is spaced from the end wall of the furnace to provide a passage for vapours where they meet. air admitted through ports 13 in the end wall before burning in the combustion chamber 3.
Patent GB-1254902-A (GB)
Title: A core operating mechanism for a die casting machine
Inventor: BAUER ALFRED FERDINAND
IPC: B22D17/24
Filed: 1969-04-08
Abstract: 1,254,902. Die casting machines. NATIONAL LEAD CO. 8 April, 1969, No. 18018/69. Heading B3F. A die casting machine having a stationary plate (12) and a sliding plate 13 is provided with a core operating mechanism comprising a frame 22 mounted on the sliding plate 13 and defining seats 32, slides 23 carrying cores 27 mounted on said frame 22 and reciprocable by means of a cylinder 25 between a position in which the cores 27 are withdrawn from the die cavity and a position in which the cores are inserted in the die cavity, and an arm 29 rotatable about a shaft 28 by a rack 35 and pinion 34 arrangement, the ends 30 and 31 of the arm 29 being engageable with the seats 32 to lock the slide 23 against movement relative to the frame 22. The arm 29 is thus swung into and out of engagement with the seats 32 by the rack and pinion. An initial disengaging force may be applied to the arm 29 by means of a piston-rod 45 acting on a bell-crank lever 40 which in turn acts upon an extension 39 of the arm 29.
Patent GB-1183667-A (GB)
Title: Improving Corrosion Resistance of Iron-Containing Copper Alloys.
Inventor: EICHELMAN GEORGE HENRY JR
IPC: C22F1/08
Filed: 1968-04-17
Abstract: 1,183,667. Making metal plates; altering physical properties. OLIN MATHIESON CHEMICAL CORP. 17 April, 1968 [26 June, 1967], No. 18169/68. Headings B3A and B3V. [Also in Division C7] A copper-base alloy containing Fe 0À5-4 and possibly other elements, particularly V, Cr, Mo, Si Si # Sn, Ti, Al, As, # 0À01-1 each Sb, Nb, Co, Ta# Zn -0À3 Pb -0À05 Mn -0À01 Ni -0À01 P 0À015-0À04 is held at a temperature above 1500‹ F. for at least 15 minutes, hot rolled, cold rolled at least 20% and annealed at 800‹ F. to 1200‹ F. for at least 15 minutes to precipitate at least 50% of the iron in the magnetic body-centred cubic, alpha form. The initial treatment above 1500‹ F. may be followed immediately by hot-rolling from that temperature. Enhanced corrosion resistance is said to result from the process.
Patent GB-1294104-A (GB)
Title: Positive power transmission system
Inventor: MILLER H F
IPC: F16G1/28
Filed: 1969-11-10
Abstract: 1294104 Pulleys UNIROYAL Inc 10 Nov 1969 [25 Nov 1968] 18398/72 Divided out of 1294103 Heading F2Q  The subject-matter of this Specification is identical with that described in Specification 1294103 but the claims are directed to the pulley.
Patent GB-518012-A (GB)
Title: Improvements in and relating to furnace covers
IPC: F23M5/06
Filed: 1938-05-03
Abstract: 518,012. Furnace covers. MORTON, W. A., and SPENCER, H. F. May 3, 1938, No. 18548/39. Divided out of 514,337. [Class 51 (ii)] The octangular traversing cover of a pittype furnace is sealed by flanges depending into granular refractory material and the side and end flanges are so dimensioned that only the seals extending at right angles to the direction of the movement of the cover are broken when the cover is lifted for traversing. The end flanges, Fig. 6, consist of V-edged refractory slabs 70 held by shoes 75 bolted to the cover, while the side flanges, Fig. 5, are lengthened by metal extension pieces 74. The cover is suspended from the axles of the traversing- carriage, and the lowering movement is retarded by dashpot devices.
Patent GB-1040137-A (GB)
Title: Method of producing electrical capacitors with semiconducting layer
Filed: 1963-05-10
Abstract: A layer of manganese dioxide is formed by depositing a layer of a permanganate salt and converting the layer into manganese dioxide. In one example an oxidized body of sintered tantalum powder is impregnated by immersion for several minutes at room temperature in a solution of potassium permanganate and then treated with a reducing agent such as manganese nitrate solution, alcohol, or a combination of manganese nitrate and alcohol. Further layers of manganese dioxide may be added by repeating the process or by forming a layer of manganese (II)-salt and oxidizing it, for example with potassium permanganate.
Patent GB-1317367-A (GB)
Title: Container of the disposable type provided with a drain device
IPC: B65D88/54
Filed: 1971-06-02
Abstract: 1317367 Portable containers, load-handling pallet; taphole valves VENNOOTSCHAP ONDER FIRMA "ALDOCOVER" 2 June 1971 [3 June 1970] 18586/71 Headings B8D, B8H and B8T [Also in Division F2] A throw-away container of the type having a plastics sack 6 within an outer casing, is provided with a bottom drainage valve comprizing a valve disc 3 mounted on a spindle 12 and adapted to be raised from a valve seat 4 in a stepped diameter tubular housing 1 above housing wall outflow apertures 16. The housing comprises a lower smaller diameter portion, which is joined to an upper aperture portion by a shoulder and provided with a drainage spout 11. The valve seat 4 is formed by a resilient insert adhered to or close-fitted in the lower diameter portion. The container is adhesively secured at its bottom 8 to a pallet 9 and the valve is clamped to the pallet by a ring 10 and sealed to the opening in the sack by rings 5 and 7. The valve disc is raised from its seat on depression of a lever assembly 14, which extends through the wall of the spout into engagement with the spindle, against the bias of a spring 13. A valve guide-disc 2 is secured to the upper end of the spindle.
Patent GB-734552-A (GB)
Title: Improvements relating to the coating of steel tubing
IPC: C23C2/38
Filed: 1953-07-06
Abstract: 734,552. Annealing, cleaning and coating steel tubing. GENERAL MOTORS CORPORATION. July 6, 1953 [July 19, 1952], No. 18632/53. Classes 72 and 82 (2). [Also in Group XXXVI] An apparatus for coating steel tubing with a metallic coating comprises tanks 34, 36, 38 to contain respectively a sulphuric acid solution, a flux solution and a molten coating material, a horizontal sleeve (48, 64, 72) supported above the liquid level in each tank, and an associated pump 40, 66, 74, to feed the liquids to the sleeves. The tube to be coated is fed continuously through the sleeves in the order named and the tube is made the anode in the acid bath to cause electrolytic cleaning in this bath. Water rinses 60, 73 are provided between the acid and fluxing stations and after the coating station. Air wipers 86 are arranged to remove the surplus liquid from the tube after each treatment. The tube is fed through the apparatus by rolls 10, and by the rolls of the tube-making apparatus and undergoes an annealing treatment at 12, being electrically heated to a temperature in the range 1500- 2000‹ F. in a reducing atmosphere. It is cooled by passage through a pipe 26 surrounded by a water jacket 28 and is then pickled in the acid, having a concentration of 25 per cent, at a speed between 60 and 110 ft. per min. The electrolytic treatment assists cleaning. The flux bath is 30-75 per cent zinc chloride in water at a temperature of 50-300‹ F. The coating metal is 93 per cent Pb, 7 per cent Sn, kept at 700‹ F.
Patent GB-824728-A (GB)
Title: Improvements relating to ion sources
IPC: H01J27/08
Filed: 1957-06-13
Abstract: 824,728. Ion sources. COMPAGNIE GENERALE DE TELEGRAPHIE SAN FIL. June 13, 1957 [June 22, 1956], No. 18652/57. Class 39(1). In an ion source of the electron bombardment type, a ribbon electron stream produced by a filamentary cathode 30, Fig. 3, is injected into crossed electric and magnetic fields E, B with a suitable velocity, so as to follow a planar trajectory 31 which is nearer to the positive ion repelling electrode 20 than to the negative electrode 21. The electrons accelerated by electrode 32 initially follow a half arch of a cycloid. The ions are withdrawn through slots in electrodes 21, 22. The electrode 21 may be provided with side portions to focus the electrons in the space 20-21 and the ions in the space 21-22. The electrode 21 may have a number of slots formed by wires or narrow blades 40, Fig. 6, e.g. of graphite. In a modification of Fig. 3, the extension 27-28 of the electrode 21 approaches the electrode 20 and the cathode may be located in a recess in an extension of the electrode 22. An apertured extension of the electrode 21 replaces the electrode 32. In another modification, Fig. 10, the electrodes 50, 51 and 52 are curved. Electrode 52 is box-shaped and the ions are focused in a narrow aperture in the bottom of the box. Protuberances 57, 62 on the electrode 51 improve focussing and provide shielding. The invention is applicable to accelerators, mass spectrographs and isotope separators.
Patent GB-917176-A (GB)
Title: A process producing an imitation watermark in paper or waterleaf or the like
IPC: B41M3/10
Filed: 1960-05-26
Abstract: 917,176. Printing processes. LIVING- STONE, I. M. May 1, 1961 [May 26, 1960], No. 18669/60. Class 100 (2). A watermarked effect is produced on paper by printing it with a solution of resin or of a synthetic resin e.g. a cyclohexanone-type resin in an organic solvent, e.g. white spirit. The solution penetrates into the paper, making it locally translucent, and the solvent evaporates.
Patent GB-799664-A (GB)
Title: Improvements in or relating to garment presses
IPC: D06F71/16
Filed: 1954-06-26
Abstract: 799,664. Ironing presses. JAXONS (HILLINGTON), Ltd., and JACK, W. Sept. 26, 1955 [June 26, 1954; Sept. 16, 1954], Nos. 18818/54 and 26846/54. Class 138 (2). A garment pressing machine includes a head (not shown) and a buck assembly incorporating a buck 1 and at least one fin 2 movable outwardly from the buck whereby to increase the effective width of the buck assembly, the fin being so located that the distance between peripheral points on opposite sides of the buck assembly measured across one face of the buck assembly is appreciably greater than the distance between the same peripheral points measured across the opposite face of the buck assembly. Two fins are preferably provided and each is connected at both ends by a link 3 to an arm 4 pivoted at 5. The fins 2 are resiliently mounted on the buck 1 by means of members 6 passing through slots 7 in the links 3 and biased upwardly by springs 8. The fins may carry their own heating means and may be manually or power operated. Leaf springs may be used in place of the helical springs 8. The fins may be covered and/or located within a general covering including the buck. Specification 686,467 is referred to.
Patent GB-1132402-A (GB)
Title: Self-calibrating ramp generator
IPC: H03M1/10
Filed: 1967-04-25
Abstract: 1,132,402. Analogue-to-digital converters. RADIO CORPORATION OF AMERICA. 25 April, 1967 [27 May, 1966], No. 18913/67. Heading G4H. In an analogue-to-digital converter of the kind in which the unknown signal is compared with a ramp voltage to obtain a timed pulse, the interval before the pulse being measured by counting clock pulses, the ramp voltage is compared with a reference voltage at a preselected moment determined by the counter and is made to be the same by correcting the ramp voltage generator. The unknown signal A, Fig. 1, is compared at 2 with the ramp voltage from generator 9. Comparator 10 acts as a zero detector, giving a start pulse when the ramp passes through zero. This starts counter 11 counting clock pulses from generator 12. When the ramp voltage reaches the unknown signal voltage the value in the counter is transferred to store 3. The reference voltage R from source 5 is the maximum measurable signal. It is subtracted from the ramp voltage at 7 and the difference D, Fig. 2, is gated into an integrator 8 for the check period S which is defined by a sampling logic circuit 13 receiving the counter output. The check period is spaced equally about the instant at which the counter reaches a value corresponding to the reference signal. If the ramp is correct the integral will be zero. If not, the unbalance will pass to a summing circuit, to be added to the reference signal, to increase or decrease the value of the control voltage applied to the ramp generator 9. By this means the ramp voltage is adjusted to equal the reference signal R at the preselected count.
Patent GB-1473387-A (GB)
Title: Coaxial bidirectional flow control and relief valves and hydrostat system containing the same
IPC: F15B21/041
Filed: 1974-04-30
Abstract: 1473387 Filter system PALL CORP 30 April 1974 [1 May 1973] 18933/74 Heading B1D [Also in Division F2] A filter for use in a system in which fluid may flow in either direction includes a valve which switches the flow to a by-pass path under reverse flow conditions to prevent the contaminants in the filter from being dislodged and carried into the fluid stream. The valve also provides for by-passing the filter under normal forward flow when the filter becomes blocked. This condition is indicated by an indicator 14. The filter unit 26 is mounted between the valve assembly V1 and a nipple 33 in a bowl-like housing member 9 which screws onto a housing member 6 to a portion 45 of which the valve assembly is attached. The filter element 26 is composed of a corrugated cylindrical filter 27, of stainless steel wire mesh, for example 300 mesh, or a microporous multilayer element having a paper substrate as in U.S. patent No. 3353682, supported on a cylindrical internal core 30 of perforated stainless steel having openings 32 for fluid flow. The ends of the filter element and core are sealed to end caps 28, 29 by potting compound 31. A hydraulic system, Fig. 1 (not shown) includes a filter of the invention in each connecting line between a reversible pump and a motor driven in either direction according to which line is supplied by the pump.
Patent GB-1241112-A (GB)
Title: Triggered laser which is discontinuously optically pumped
IPC: H01S3/093
Filed: 1969-04-14
Abstract: 1,241,112. Lasers. COMPAGNIE GENERALE D'ELECTRICITE. 14 April, 1969 [18 April, 1968], No. 19076/69. Heading H1C. In a Q-switched laser, a laser rod 3 of yttrium aluminium garnet is optically pumped by a discharge tube 2 whose alternating current supply 7 also drives a synchronous motor 6 to rotate a Q switching reflector 5. The laser rod and the discharge tube are situated along the focal lines of an elliptical reflector 1, and the resonant cavity formed by a partially reflecting plate 4 and the rotatable reflector 5, which may be a totally reflecting prism as shown or a plane mirror. An adjustable phase shifter 12 allows the maximum fluorescence of the laser rod to coincide with the resonator alignment.
Patent GB-707983-A (GB)
Title: An improved gas burning appliance
Inventor: SUGG PHILIP CRAWFORD
IPC: F23D14/50
Filed: 1950-07-31
Abstract: 707,983. Gas burners. SUGG & CO., Ltd., W. Sept. 21, 951 [July 31, 1950], No. 19122/50. Class 75 (1) A gas burner particularly for use in a street lamp comprises a gas nipple N having a calibrated restricted jet orifice element O, and a clearing pin 5 normally held by a spring 14 in a position in which it does not interfere with the flow of gas through the nipple. The pin 5 may be operated by a push button 12 or, alternatively, by a diaphragm responsive to a change in pressure in the gas supply line, and is guided into the nipple by a tapered inlet 17 in the latter. The shank of the pin 5 passes through a bore 10 in a detachable plug 9 screwed into a gas supply elbow 6 and has a valve head 15 which is maintained against a seating 16 at the inner end of the bore 10 when the pin is held in its inoperative position by the spring 14.