baber/WOPTO huggingface dataset:
Patent GB-515293-A (GB)
Title: Improvements in and relating to the production of calcium sulphate
IPC: C01F11/46
Filed: 1938-12-01
Abstract: 515,293. Anhydrous calcium sulphate. DU PONT DE NEMOURS & CO., E. I. Dec. 1, 1938, No. 35059. Convention date, Dec. 2, 1937. [Class 1 (iii)] Finely divided calcium sulphate anhydrite is prepared from gypsum by dehydration by adding a calcium compound to strong sulphuric acid at a low temperature, preferably not exceeding 40C., so that a small part of the acid is neutralised and a suspension of primary seed material formed, adding a portion of the gypsum to-be dehydrated and heating to form,a.suspension of secondary seed material, and then adding the rest of the gypsum with further heating. The gypsum may be formed from waste acid and sufficient lime to neutralise 90 per cent. of the acid, filtering and thoroughly washing. The formation of the primary seed material is preferably carried out in acid of approximately 60 Baume by the addition of either lime, hydrated lime, or calcium carbonate with cooling if necessary to keep the temperature below 35C. The addition should be about 10 parts by weight to 250 parts of acid, but should not be sufficient to reduce the strength of the acid below 65 per cent. The gypsum may contain uncombined water and about one quarter should be added to form the secondary seed material, the strength of the acid not being allowed to fall below 25 per cent. The suspension is' heated to between 60 and 100C. until the end of the reaction. The remaining gypsum is then added and the heating continued at between 95 and 100C. for an hour. The resulting acid should not be allowed to fall below 1 per cent. strength. If necessary to keep the mixture fluid, water may be added, provided the above conditions are observed. The product may be used as a pigment or pigment extender. The Specification as open to inspection under Sect..91 comprises also a modification wherein the gypsum is added in one step. This subjectmatter does not appear in the Specification as accepted.
Patent GB-468610-A (GB)
Title: Improvements in and relating to roller mills for grinding materials
IPC: B02C4/02
Filed: 1936-01-10
Abstract: 468,610. Roller and roller-and-breast mills. SONSTHAGEN, A. Jan. 10, 1936, No. 35073. Divided out of 468,457. [Class 59] Means for reducing the angle of the surfaces at the entrant side of the nip independently of the diameter of the rollers is provided by a member 4, 5 which forms with the rollers a pocket P having restricted entrances P<1>, P<2> in which the material is subjected to a wedging action. As shown in Fig. 1 the nip between the rollers a, b, is made smaller by a thin blade 1 riveted to plates 4, 5 shaped to provide a gradually decreasing width toward the nip. The blade may project into the nip below the centre line joining the two rollers and openings may be made through the blade. Scrapers 13 and grinding bars 8, 11 may co-operate with the rollers. In Fig. 2 the blade 1 is placed below the nip in a housing 7 the rolls i, j being revolved in a direction opposite to that shown in Fig. 1. The grinding bar 8 may be moved to control the gap at a<1> and b<2> or the gap bl may be controlled by moving the roller i against an adjustable stop 10. A second bar 11 may be provided so that one bar may be set for coarse grinding and the other for fine grinding. Specification 468,457 is referred to.
Patent GB-319163-A (GB)
Title: Sectional poles
IPC: E04H12/08
Filed: 1928-11-29
Abstract: 319,163. Bromford Tube Co., Ltd., Reimann, J. J., and Reimann, M. Nov. 29, 1928. Tubular posts.-A pole comprises tubular sections 2 having the upper ends 3 reduced in plain taper to fit within the tapered lower ends 4 of the section above. The lower ends 4 of the sections are folded back to form reinforcing collars 5 which may have liners inserted in the folds. A detachable collar for the attachment of stays may be fitted over the collar 5. Each section 2 is of smaller diameter than the one below it in the pole.
Patent GB-669981-A (GB)
Title: Bleaching process for mineral oils and paraffins
IPC: C10G65/08
Filed: 1947-12-31
Abstract: A process for decolourising mineral oils for medicinal use by treatment in the liquid phase with hydrogen under conditions of high temperature and pressure and in the presence of a hydrogenation catalyst is characterised in that the oil, without preliminary treatment for removal of constituents inimical to the catalyst, is submitted to hydrogenation in the presence of a non-activated catalyst consisting of a metal of the 8th group or an oxide thereof, alone or in the presence of alumina, under a pressure of between 200 and 300 atmospheres and at a temperature between 80 and 450 DEG C., the conditions being such as to avoid appreciable decomposition of the oil.  The hydrogenation may be followed by a refining treatment with sulphuric acid, oleum, bleaching earth or activated carbon.  In an example, a white technical oil was produced from an unrefined distillate of the spindle oil type by forcing it through a continuous hydrogenation plant at the rate of 1 kg. per hour per litre of reaction chamber under 250 atmospheres at 350 DEG C. with 2 cub. metres of hydrogen per kg. of oil charged and in the presence of 3 per cent (by weight of oil charged) of a mixture of iron and aluminium oxides. The product was again hydrogenated under similar conditions but using a catalyst of freshly-reduced nickel oxide, giving a yield of 95 per cent of a colourless oil.  In another example the final hydrogenation product was treated with 2 per cent of 98 per cent sulphuric acid followed by two further treatments with 5 per cent of oleum and then with bleaching earth yielding a 70 per cent yield of a white odourless and tasteless oil.
Patent GB-1535698-A (GB)
Title: Thionophosphonate diester useful as an insecticide activator
IPC: C07F9/58
Filed: 1977-08-23
Abstract: 1535698 Insecticide activators STAUFFER CHEMICAL CO 23 Aug 1977 [30 Aug 1976] 35254/77 Heading ASE [Also in Division C2] An insecticidal composition comprises N- (mercaptomethyl) phthalimide S-(O, O-dimethyl phosphorodithioate) and an activating amount of the novel compound: The specified ingredients may be present in a ratio by weight of the insecticide to activator of from 1:0.1 to 1:10 and an inert carrier or diluent may also be present.
Patent GB-795561-A (GB)
Title: Improvements in or relating to frequency demodulators
IPC: H03D3/08
Filed: 1955-12-08
Abstract: 795,561. Frequency modulation receivers; frequency discriminators. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 8, 1955 [Dec. 11, 1954], No. 35263/55. Addition to 758,802. Class 40 (5). In a phase shift frequency discriminator preceded by a limiter 12 as described in the parent Specification the first tuned circuit comprises three reactances 12, 16, 9 forming a # filter highly attenuating harmonics of the carrier produced by distortion clue, for example, to grid current flow in a preceding amplifier 2. To this end a series inductor 16 of the filter may have a tap 17 at a point of zero or minimum voltage, i.e. so that the turns above and below the tap 17 are proportional to the impedances of capacitors 15, 9, and be connected to H.T. through a resistor 20. Further, the capacitor 9 provides a step-down purely capacitive coupling to the second tuned circuit 5, one end of which is connected to ground only through a small capacitor 21.
Patent GB-1040497-A (GB)
Title: Table lighter with battery ignition
IPC: F23Q2/28
Filed: 1964-08-28
Abstract: 1,040,497. Lighters. HEINRICH MALTNER G.m.b.H. Aug. 28, 1964 [Aug. 29, 1963], No. 35278/64. Heading F4F. A table lighter has a spark producing mechanism comprising a switch 12, a transformer 9 and a capacitor 8 supplied by a battery 7 which is located in a trough 19 so that liquid which exudes from the battery is retained in the trough.
Patent GB-1271532-A (GB)
Title: Method of withdrawing oxygen-free copper ingots from moulds in the process of continuous casting
IPC: B22D11/128
Filed: 1969-06-17
Abstract: 1,271,532. Continuous casting. SPETSIALNOE KONSTRUKTORSKOE BJURO TYAZHELYRH TSVETNYKH METALLOV, and BALKHASHSKY ORDENA LENINA GORNO - METALLURGICHESKY KOMBINAT IMENI 50 - LETIA OKTYABRSKOI REVOLJUTSII. 17 June, 1969 [17 June, 1968 (2)], No. 35450/71. Divided out of 1,271,531. Heading B3F. An oxygen-free Cu strand is withdrawn from a continuous casting mould by means (such as rolls) whose pressure on the cast strand does not exceed 3 Kg./mm.<SP>2</SP> (about 4200 lbs./in.<SP>2</SP>). The surfaces of the withdrawal means contacting the strand are of a resin-dipped fabric laminate material, Textolite (Registered Trade Mark), having a modulus of elasticity less than that of the Cu strand. The rolls are as described in the Specification 1,271,531.
Patent GB-1243220-A (GB)
Title: Copolymer vehicles for use in coating agents and lacquers
IPC: C08F8/00
Filed: 1968-07-25
Abstract: 1,243,220. Copolymer coating vehicles. FARBENFABRIKEN BAYER A.G. 25 July, 1968 [7 Sept., 1967], No. 35465/68. Heading B2E. [Also in Division C3] Stoving lacquers contain, as a spontaneously crosslinkable vehicle, a copolymer obtained 'by copolymerising 10-40% by weight of a #- or α-hydroxyalkyl ester of a monoethylenically unsaturated carboxylic acid with 90-60% by weight of one or more monoethylenically unsaturated comonomers, reacting some of the hydroxyl groups of the resultant copolymer with an aromatic dicarboxylic acid anhydride to form the corresponding semi-ester, and then reacting some or all of the remaining hydroxyl groups with an α-alkoxyalkyl isocyanate to form the corresponding urethane. Suitable hydroxy alkyl esters include hydroxyethyl and hydroxypropyl acrylates and methacrylates. Comonomers which may be used include alkyl acrylates and methacrylates, acrylonitrile, methacrylonitrile, styrene, α-methyl styrene, vinyl toluene and vinyl esters of aliphatic carboxylic acids. Aromatic acid anhydrides specified are those of phthalic, tetrabromophthalic, tetrachlorophthalic and Het (registered Trade Mark) acids. Methoxymethyl isocyanate is the preferred alkoxyalkyl isocyanate. The lacquers may optionally containing filler or pigment e.g. titanium dioxide. Suitable solvents for the lacquers include aromatic hydrocarbons, aliphatic ketones and esters, aliphatic or cycloaliphatic alcohols, ethers such as dioxane, ether-esters, and mono-ethers or mono-esters of diols. The lacquers may be applied to substrates 'by methods such as brush coating, spraying, dipping or rolling, and after airdrying are stoved, e.g. at 130‹C. In the Example the lacquer, which includes silicone oil and calcium naphthenate, is sprayed onto glass panels and steel plates.
Patent GB-411547-A (GB)
Title: Improvements in and relating to feed mechanisms for rotary cutting and scoring machines for non-metallic sheet material
IPC: B65H3/24
Filed: 1932-12-15
Abstract: 411,547. Conveying reciprocating motion. STRONG, A. G. O., 26, Henleaze Gardens, Westbury-on-Trym, Bristol. Dec. 15,1932, No. 35527. [Class 80 (i).] The harmonic reciprocating motion obtained from a rotary motion is modified to produce a uniform linear speed at one part of the motion. A slide 2 is provided on its lower side with a rack 9, engaging the toothed end of a bell-crank 7 pivoted at 8 on a slotted bracket 5, and provided on its other arm with a roller 10 moving along a fixed camtrack 12. The bracket 5 is reciprocated in a slideway 6 by means of a rotary shaft 14, crank 17, and pin 18, the latter engaging a slot 19 in the bracket. As the roller 10 moves to one end of the track 12, it is raised, thereby rotating the lever 7 about the pivot 8 and giving additional movement to the slide 2 through the medium of the rack 9.
Patent GB-501168-A (GB)
Title: Improvements relating to blinds or sunshades for windows and the like
IPC: E06B9/78
Filed: 1937-12-23
Abstract: 501,168. Window blinds. CROSS, R. Dec. 23, 1937, No. 35578. [Class 20 (iii)] A blind of the awning type comprising a main upper roller 1 and a supplementary roller 2. attached to the foot of the blind, and so arranged that during unrolling of the blind, that portion 3a of the foot which may be discoloured by exposure is wound upon the supplementary roller, as described in Specification 389,159, [Group XIV], is provided at the ends of the rollers with barrels or pulleys 4, 5, which are interconnected by cords 6, the width between the flanges of the barrels being approximately equal to the thickness of the cord, such that there is no lateral movement of the latter on the barrels when the blind is rolled-up or unrolled. In the rolled-up condition of the blind shown, the turns of cord on the barrel 4 are equal in number, and wound in the same direction as, the turns of blind material 3 on the roller 1, and the circumference of the outer turn of cord is not greater than that of the outer turn of blind material. The barrel 5 on the supplementary roller 2 carries a few turns only of cord. When the blind is unrolled, the cords 6 unwind from the barrels 4 more slowly than the blind material 3, with the result that the cords are also unwound from the barrels 5, and the foot portion of the blind is wound upon the roller 2.
Patent GB-1021956-A (GB)
Title: Iron preparations and process of preparing the same
IPC: A61K31/295
Filed: 1964-08-31
Abstract: The invention comprises a water-soluble, substantially non-ionic complex of ferric hydroxide with a degraded pectin, said pectin having an average intrinsic viscosity at 25 DEG  C. in the range of 0.04 to 0.25.  The complex may contain 13.1 to 14.9% by weight of elemental iron, and may be made by mixing an aqueous solution of a degraded pectin having an average intrinsic viscosity at 25 DEG  C. of 0.04 to 0.25, with an aqueous solution of a ferric salt, e.g. ferric chloride, nitrate, sulphate, acetate, or ferric ammonium sulphate, and forming ferric hydroxide in situ by addition of an alkaline material, e.g. sodium hydroxide, to the reaction mixture. After removal of insoluble matter by filtration, or centrifugation, and low-molecular weight material by dialysis, the complex may be precipitated from aqueous solution by an organic solvent, e.g. methanol, washed and dried. The complex forms injectable aqueous solutions of low viscosity containing up to 100 mg. of iron per ml. (Divisions A5-A6). Degraded pectin having the required viscosity may be prepared by adding pectin to water at 60-70 DEG  C. to form a homogeneous solution of pectin containing 10-20% by weight of pectin, adding 3-10% by weight of pectinase, based on the weight of pectin, then adding, preferably after 6-8 hours; and again after about 24 hours, additional amounts of pectinase (approximately 1% based on the weight of pectin), and then, after about 48 hours, removing insoluble material from the pectin solution.  In an example, the degraded pectin has an intrinsic viscosity at 25 DEG  C. of 0.045, corresponding to a molecular weight of 2200.ALSO:An injectable solution containing up to 100 mg of iron per ml comprises an aqueous solution of a substantially non-ionic complex of ferric hydroxide with a degraded pectin, said degraded pectin having an intrinsic viscosity at 25 DEG C. of 0.04 to 0.25.  The solution may be made isotonic by addition of common salt, and a preservative e.g. phenol, may be added.  The solution may be used intramuscularly for the treatment of iron deficiency anaemia.
Patent GB-323334-A (GB)
Title: Improvements in machines for pressing plastic material
IPC: C11D13/18
Filed: 1928-12-03
Abstract: 323,334. Jones, R. A. Dec. 3, 1928. Cylinder machines; feeding blanks.-A machine of pressing soap &c. comprises means for successively feeding blanks transversely between a pair of dies, one being reciprocable toward and from the other which is movable laterally of the pressing movement to eject the pressed article on to conveyer means. As shown, cylindrical soap blanks are fed singly from a magazine 46, Figs. 1 and 2 by a pusher 74 attached to a carriage 75 reciprocated by a cam 68 on a shaft 66, lever 69 and link 77, the forward end of the blank being engaged by a resilient member 95 reciprocated in unison the pusher 74 by a second cam on the shaft 66 acting through levers 84, 87 coupled by a rod 88. The members 74, 95 are furnished with toothed heads and position the blank between upper and lower dies 154, 172. The upper die 154 is secured to the lower portion 121 of a slide 120 which is reciprocated by a toggle 116, 117, actuated through a lever 111 and rod 112 connected to a crank 114 on the main shaft 23. An adjustable spring connection 124 is provided in the link 117. The lower die 172 is secured to a shaft 173 rockable by a cam 181 levers 179, 183 rod 184 and lever 186 to bring the die alternately into alignment with the upper die 154, for pressing, and into the position shown in Fig. 2, for delivery of the pressed cake. A bent portion 187 of the lever 186 engages an abutment 188 to align the die vertically. The upper die comprises an outer shell 157, Fig. 9, housing a stripper 160 furnished with a shank 162 carrying a collar 163 which is engaged by a stripper finger 153, Figs. 1 and 2 rocked by a cam 136 on the shaft 68 through levers 137, 150 and link 148. An ejector 166, Fig. 9, pressed downwardly by a spring 168, detaches the pressed cake from the stripper 160. The lower die is furnished with an ejector 189, Fig. 11, retained by a flange 190 and furnished with a stem 192 carrying a roller 193 which engages a cam 196 to eject the soap cake as the shaft 173 is rocked. An endless belt, passing around a drum 210, Figs. 1 and 2 driven from the shaft 66 through chain gearing, receives and delivers the finished cakes. To prevent damage to the cakes, the belt is bounded by rails suitably padded at the receiving point. The main shaft 23 is driven by a clutch 26 controlled by a hand-lever 35 through a rod 34 and lever 32 and drives the shaft 66 through helical and spur gearing. In operation, the lowermost blank in the magazine is fed between the dies 154, 172 and a double pressure is imparted by the toggle 116, 117. The outer portion of the upper die telescopes over the lower die during compression. As the upper die rises, the finger 153 engages the collar 163 of the stripper 160 causing the cake to be stripped from the outer dies 157, after which the cake is detached by the ejector 166 and is left upon the bottom die from which it is delivered by the ejector 189.
Patent GB-374381-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J19/38
Filed: 1931-12-24
Abstract: 374,381. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Dec. 24, 1931, No. 35691. Convention date, Jan. 3. [Class 39 (i).] An anode, particularly for a rectifier, surrounds the cathode and is constituted partly by a metal plate and partly by a grid, which forms a window for the heat radiated by the cathode, the other parts of the tube being arranged to avoid covering the window. Two plates 5, having gauze windows 13, are welded together at flanges 6 and supported on wires 3, 4. A glass rod 7, mounted on the wires, supports a spring 8 tensioning an oxide cathode 9.
Patent GB-1472839-A (GB)
Title: Propargyl ethers
IPC: C07C43/00
Filed: 1975-08-29
Abstract: 1472839 Propargyl ethers F HOFFMANNLA ROCHE & CO AG 29 Aug 1975 [30 Aug 1974] 35742/75 Heading C2C The invention comprises compounds of formula  where n is an integer of 8-12. These compounds may be prepared by reacting a compound X-(CH 2 ) n -X<SP>1</SP>, where X and X<SP>1</SP> each represent a chlorine, bromine or iodine atom or a mesyloxy or tosyloxy group, with at least two moles of an alcoholate MOCH 2 C#CH, where M is an alkali metal or alkaline earth metal, or by reacting a compound MO(CH 2 ) n OM with a compound XCH 2 C#CH. The alcoholate may be formed in situ from the alcohol and the metal or a hydride, amide or hydroxide of the metal. An inert organic solvent, e.g. dimethylformamide, dioxane, hexamethylphosphoric acid triamide, tetrahydrofuran or dimethoxyethane, is used for these reactions. The compounds are insecticides.
Patent GB-1149008-A (GB)
Title: Coaxial magnetron
Inventor: POWELL KENNETH DEAN
IPC: H01J25/55
Filed: 1966-08-10
Abstract: 1,149,008. Magnetrons. WESTINGHOUSE ELECTRIC CORP. 10 Aug., 1966, No. 35754/66. Heading H1D. Slight tuning of a coaxial magnetron having an outer resonator 30 surrounding the anode structure 22, 24, is effected by tilting a tuning ring positioned in a groove 40 formed in the end wall of the cavity, and secured by a first flexible tab 44 to the cavity wall adjacent the output slot 32, and by a second flexible tab 50 to the end of a cantilever-mounted elongated member 52. Member 52 is secured at its outer end by screws 64, and is apertured to receive a polepiece 68 separated from a second cup-shaped polepiece 72 by a non-magnetic spacer 74, both polepieces lying within the fringe field of the magnetron main magnets 39 (Fig. 2, not shown). A coil 76 is mounted on the member 52 between the two polepieces, and when energized by a signal of a frequency comparable with the natural frequency of the member 52, flexes the latter and thereby tilts the tuning ring 42, to vary the frequency of the magnetron. A second coil may be mounted on member 52 to provide a monitoring feedback signal for amplitude modulating the voltage applied to coil 78, or to provide an indication of the position of the member 52. An additional plunger-type tuner 90, at the top of the resonator, permits adjustment of the frequency range of operation.
Patent GB-906199-A (GB)
Title: Improvements relating to apparatus for effecting the removal of metal from sheets, cylinders or the like
Inventor: HARVEY GORDON COLUMBA
IPC: B23K9/00
Filed: 1959-10-23
Abstract: 906,199. Cutting by fusion. HARVEY & CO. (LONDON) Ltd., G. A. Oct. 21, 1960 [Oct. 23, 1959], No. 35927/59. Class 83 (4). In apparatus for removing metal from a workpiece by arc fusion, an electrode fed towards the workpiece at a rate corresponding to the relative movement between the apparatus and the workpiece fuses metal which is removed by an air blast. A pair of cylinders 60 tack-welded together is divided along the seam prior to butt welding by cutting apparatus having a body 1 suspended from a loom 5. A frame 3 angularly adjustable on the body 1 carries an air motor 21 driving through a clutch 25 actuated by a lever 26 a screwed rod 24 which is manually rotatable by a knob 27. An electrode holder 31 carrying a carbon electrode 30 has two half-nuts 32 spring-loaded into engagement with the rod 24 and manually releasable by levers 34. Near its arcing end the electrode 30 passes between jaws 40, 41 in a block 20<SP>2</SP> on the frame 3. Compressed air jets issue from the block 20<SP>2</SP>. The jaws 40, 41 are closed against the action of a spring 44 by compressed air during cutting. A roller 9 on the body 1 maintaining the correct spacing between the cylinders 60 and the apparatus.