baber/WOPTO huggingface dataset:
Patent GB-1364131-A (GB)
Title: Explosive mixture
IPC: C06B47/00
Filed: 1972-05-30
Abstract: 1364131 Explosive compositions DYNAMIT NOBEL AG 30 May 1972 [29 May 1971] 25341/72 Heading C1D An explosive mixture comprises an explosive impact- and shook-sensitive salt of perchloric acid dissolved in a non-aqueous high boiling and non-volatile solvent. For example perchlorates of hydrazine, methyl or dimethyl hydrazine, mono-, di- and trimethylamine, ethylene diamine, ortho-nitraniline, or pyridine may be dissolved in 1,2-propane diol, 1,3-propane diol, a butane diol, glycol, glycerine, triethylene glycol, liquid polyglycol, pentamethylene diamine, or formamide. Another suitable solvent is a mixture having a freezing point below - 10‹ C. and comprising an oxygen-yielding inorganic salt and a combustible compound; the salt may be ammonium nitrate or perchlorate or an alkali metal or alkaline earth metal nitrate or perchlorate and the combustible compound a nitrate or perchlorate of methylamine, ethylamine, aniline, phenylene diamine, hexamethylene tetramine, alkanolamines, ethylene diamine, hexamethylene diamine, tetraethylene pentamine, hydrazine, urea, urethanes, guanidine or quaternary ammonium compounds, ammonium formate, acetate or sulphamate, formamide, acetamide, urea, urethanes, ureides, carbamic acid, ammonium thiocyanate, hypophosphate, or thiosulphate, anhydrous sodium acetate, or mono- or oligo-saccharides. Swelling agents, may be added, for example guar flour, carob bean flour, agar-agar, starch, cellulose esters, ethers, and glycolates, proteins and gelatines, gum arabic, tragacanth, alginates, polyacrylamides, polyacrylic acids, polyvinyl alcohol, polyoxymethylene, bentonite, silica, and silicates. Salicylic acid may be present as an antibacterial agent. The mixture may contain up to 15% by weight of water. In examples (a) a mixture of methylamine perchlorate, ethanolamine nitrate, methylamine nitrate, urea, and ammonium nitrate is mixed with guar flour, aluminium, and ammonium nitrate; (b) a mixture comprises Al powder, Al flakes, glycerine, water, ammonium nitrate, and methylamine perchlorate or hydrazine perchlorate. Specifications 1,364,132 and 1,364,133 are referred to.
Patent GB-327934-A (GB)
Title: Improvements in riveting machines
IPC: B21J15/26
Filed: 1929-08-20
Abstract: 327,934. Elsner, H. Aug. 20. 1929. Riveting.-In a riveting-machine the rivets are fed on to the lower die by a vertically reciprocated shoot. The upper tool 13 is reciprocated from a crank 9, and the lower tool 4 carries a sleeve 5 with spring-pressed jaws 7 for holding the rivet. The rivets are fed from a bin 14 through an inclined shoot 15 of differing cross-section. The lower part 15a of the shoot is reciprocated from a cam 22 to receive the rivet and to deliver it head downwards to the jaws 7 which are opened to receive a rivet by a projection 26 on the shoot 15a. Stops 19, 28 control the rivet feed. The sleeve 5 recedes under pressure of the work and the jaws 7 are opened by engagement with shoulders on the tool 4.
Patent GB-1040784-A (GB)
Title: Infinitely variable speed power transmission, especially ball friction transmission
IPC: F16H15/40
Filed: 1964-06-19
Abstract: 1,040,784. Variable-speed friction gear. O. STIEBER. June 19, 1964, No. 25375/64. Heading F2D. A continuously variable friction gear comprises a ball 6 frictionally engaging internal conical surfaces 4a, 5a of offset parallel input and output shafts 4, 5 respectively and shifted to vary the gear ratio by a transverse screwthreaded adjuster 7 which abuts the ball 6 and is arranged on the side nearer to the input shaft 4b than the output shaft. The adjuster 7 may be at right angles to the axes of the input and output shafts, or may be acutely inclined towards the input shaft (Figs. 3 to 5, not shown) and adjustable along a line parallel to the flanks of the conical surfaces 4a, 5a, in contact with the ball. The adjuster abutment 7 may be formed as a flat contact surface or as a roller, or may be a freely journalled disc (Figs. 2 and 4, not shown) providing point contact with the ball 6. In Fig. 5 (not shown) four balls, journalled in a carrier in turn journalled in the adjuster, abut the transmission ball 7. Three or more balls may be in abutment in this manner. Either or both input and output shafts 4b, 5b are axially adjustable in a housing 1 to pre-load the ball 7. The whole arrangement may be turned through 180 degrees such that the abutment control is directly beneath the transmission ball 7. To provide a control range in the order of 1: 9, the diameter of the ball exceeds 60%, preferably 85% to 90% of the maximum diameter of the conical surfaces 4a, 5a which have an included angle of approximately 150 degrees.
Patent GB-1427774-A (GB)
Title: Metering device for flowable materials
IPC: G01F1/78
Filed: 1973-05-29
Abstract: 1427774 Measuring fluid-flow TRANSMATIC FYLLAN Ltd 20 May 1974 [29 May 1973] 25384/73 Heading G1R In a metering device for flowable material, such as grain, salt, granulated sugar or non- adhesive materials, the material is fed from a hopper 1 through a device 2, having a variable gate valve or a rotatable worm or screw helix, on to a rotatable disc 3 and is thrown by centrifugal force on to a baffle or skirt 5 to fall by gravity on to a convergent tubular metering element 7 supported on brackets 8 carried by resilient lever arms 9, and any change in the vertical position of the element 7 effects an inductance or capacitance transducer 10 to indicate, on a meter 12, the mass flow-rate of material through the device. The skirt may converge towards the direction of the element 7 or may be vibrated. The output of the transducer 10 may be integrated with time by an integrator 13  to give a measure of the total mass of material by a meter 14. A controller 15 to which the transducer 10 and/or integrator 13 outputs are fed controls operation of the feed device 2 or other functions based on the mass or total flow. In an alternative embodiment Fig. 2 (not shown) the skirt and element are formed as a single unit supported on brackets. The element, in this case, need not converge and the friction force between the element and the material provides the indication of rate of flow. A lip 3A may be formed on the disc 3.
Patent GB-143465-A (GB)
Title: Improvements in or relating to lasting machines
IPC: A43D9/00
Filed: 1919-10-17
Abstract: 143,465. Sorensen, M. M. Oct. 17, 1919., Lasting.-In a machine for use in lasting uppers by the method described in Specification 9845/15, a last carrying a pulled-over shoe temporarily held in place by a clamp., as described in Specification 142,740, is carried at the upper end of a spindle 29 which passes through hollow stems 6, 18 and is adapted to be rotated through bevel gears 30, 31 from a hand-wheel shaft 10. At its upper end, the spindle 29 is associated with a clamping-device 33 for the toe-lasting wire, as described in Specification 9845/15, the wire also passing through a second clamping-device 22, 23 on the threaded upper end of the sleeve 8. The lower end of this sleeve is formed with a shoulder 20 supporting a heavy weight 21, and abutting the shoulder is a head 19 on the upper end of the stem 18, which is threaded to engage an interiorly threaded wormwheel 17 in engagement with a wormwheel 16 on a driving-shaft 5. This shaft is threaded at 50 through a nut 51 and is adapted to be moved axially by a knee-lever 11, 12 to throw a clutch member 13 into engagement with one or other of oppositely rotating pulleys 14; rotation of the shaft continues until the nut 51 engages one or other of two stops 53, 54, whereupon the shaft is moved axially to break the clutch. The lasting wire 40 for the heel end of the shoe carries a loose clamp 43, 44 and passes through a second damp 39 on an inclined rod 9 connected to an arm 38 projecting from a shaft 6, a second arm 37 of which supports a heavy weight 36 adapted to be lifted by a treadle 34. In the use of the machine the last with the pulled-over shoe is positioned, as shown, with its toe resting on an adjustable support 42, and the knee-lever 12 is moved to cause the shaft 5 to rotate in a direction to raise the stem 18 and weight 21. 'When the shaft is stopped, the lasting wire is passed through the clamp 22, 23, which is afterwards tightened, and the knee-lever 12 is moved in the opposite direction to cause the shaft 5 to rotate and withdraw the stem 18, leaving the weight 21 supported by the lasting wire. The upper materials are then pounded up, after which the hand-wheel shaft 10 is rotated to operate the clamp 33 through the spindle 29 ; the weight 21 is coupled by a forked link 46 to a dash-pot 45 to avoid damage of parts should the lasting wire break. The toe support 42 is then moved to one side and the treadle 34 is moved to raise the weight 36 so that the heelend lasting wire 40 may be engaged with the clamp 39, after which the treadle is released to allow the weight to fall and tension the wire. The heel end of the shoe is pounded up and the wire secured by tightening the clamp 43, 44. Instead of the weights 21. 36, springs may be used to tension the wires.
Patent GB-1012100-A (GB)
Title: Internal combustion engine
Inventor: BREWER CHARLES DUNSTAN
IPC: F02F3/26
Filed: 1963-06-27
Abstract: 1,012,100. I.C. engine combustion chambers. FORD MOTOR CO. Ltd. March 16, 1964 [June 27, 1963], No. 25529/63. Heading F1B. In a spark ignition I.C. engine each combustion chamber 15 at t.d.c. is formed almost entirely by a cavity in the piston crown, the centre of the cavity being located to one side of the cylinder axis. Specification 726,348 is referred to.
Patent GB-260411-A (GB)
Title: Improvements relating to turbines
IPC: F01D5/14
Filed: 1925-10-13
Abstract: 260,411. Walker, G. W. Higgs-, and Pretropolitan-Vickers Electrical Co., Ltd. Oct. 13, 1925. Blades.-To enable long blades to be used at high peripheral speeds, the effective portion of the blade is inclined in the direction of rotation sufficiently to cause the locus 0 G of the centres of gravity of successive transverse sections of the blade from end to end thereof to lie in advance, in the direction of rotation, of a line 0 R drawn radially of the turbine rotor through the centre of gravity 0 of the section at the root of the blade. Preferably the angle between the lines 0 G, 0 R is such that the tensile stresses at the thin edges of the concave side of the blade due to blending action by the steam are neutralized by those due to the action of centrifugal force at these parts at the normal speed of the rotor.
Patent GB-838235-A (GB)
Title: Improvements in or relating to copolymers of n-vinyl cyclic amides
Inventor: GARBETT THOMAS ARNOLD
IPC: C08L39/06
Filed: 1957-08-14
Abstract: An additive for lubricating oils to improve the viscosity index or fuel oils to reduce the smoking tendency comprises a terpolymer of 30-50 mol. per cent of a fumarate ester, 1-35 mol. per cent of an N-vinyl cyclic amide and an unsaturated ester of a monocarboxylic acid (see Group IV (a)).  As viscosity index improvers the copolymers may be added in amounts of 0.1-2% to mineral oils of viscosity 130 to 180 S.U.S. at 100 DEG  F. or synthetic or vegetable oils.  The copolymers are conveniently handled as concentrated solutions in oil containing 10-50 weight per cent of copolymer.  Fuel oils, e.g. petroleum distillates boiling above 250 DEG  F. and below 700 DEG  F. may contain up to 5% of the copolymer to reduce smoking tendency.ALSO:A terpolymer is formed from 30-50 mol. per cent of a fumarate ester, 1-35 mol. per cent of an N-vinyl cyclic amide and an unsaturated ester of a monocarboxylic acid.  The fumarate esters may be of C1-C20 monohydric saturated alcohols, e.g. methyl, amyl, decyl, lauryl, 2-ethylhexyl, tetradecyl, cetostearyl (tallow), or iso-octyl alcohol or mixtures thereof such as "Lorol," a commercial mixture obtained by hydrogenation of coconut oil containing C12-C18 alcohols or C8-C10 oxo alcohols.  A mixture of two fumarate esters is preferred, one having an alcohol residue of C8-C10, the other of C16-C18, the ratios being adjusted to give an average of C10-C12. p Suitable cyclic amides include pyrrolidone, oxindole, 2-ketopiperidine, pyrazolone, pyrazolidone or a -pyridone.  The unsaturated ester is preferably one of a C2-C9 unsaturated alcohol with a C2-C22 saturated monocarboxylic acid, e.g. vinyl esters of acetic, propionic, lauric, palmitic, coconut or oxo acids.  Suitable catalysts are tertiary butyl perbenzoate, tertiary butyl hydroperoxide, 2,2-bis-(tertiary butyl peroxy) butane, di-tertiary butyl peroxide or dicumyl peroxide, activated if necessary by benzoin or iron stearate or naphthenate.  The amount of catalyst may be 0.1-1%. Preferably the temperature is above 69 DEG  C., e.g. 70-200 DEG  C.  As the polymerization proceeds, white oil may be added to reduce the viscosity.  The copolymers are used as viscosity index improvers for lubricating oils; some oil may be added during the polymerization to yield a product which is a concentrated solution of the terpolymer.
Patent GB-1462847-A (GB)
Title: Magnetic filter apparatus
IPC: B01D35/06
Filed: 1975-06-17
Abstract: 1462847 Magnetic separation MONTANUS INDUSTRIE ANLAGEN GmbH 17 June 1975 [21 June 1974] 25666/75 Heading B2J A magnetic separator comprises a liquid container 1 with an inlet 2 and an outlet 3; a wall of magnetic bars 6 disposed between the inlet 2 and the outlet 3 and having gaps 9 therebetween for the passage of liquid; an endless conveyor 5 carrying the magnetic bars 6; drive means 12 for driving the conveyor 5; and a cleaning device 17 for cleaning the magnetic bars 6 above the level of the outlet 3. In the embodiment, two continuous chains 5 carry the bar magnets 6 which move along a rectangular path which provides separation between two inlet distributors 4 and a perforated inner vessel 7 leading to the outlet 3. The cleaning device 17, seen in Figs. 3, 4 and 5 (not shown) comprises two continuous chains 13, each carrying a pair of contoured scrapers 14, which, when the conveyor 5 is stationary can be caused to move from the rest position, Fig. 5 (not shown) and scrape along the length of the circular section magnetic bars 6 to transfer the separated magnetic material to a discharge chute 16. The conveyor chains 5 may be replaced by a pair of discs (not shown), and the chains 13 carrying the scraper 14 may be replaced by reciprocating cylinders (not shown).
Patent GB-642423-A (GB)
Title: Method of preparing linear super polyesters
IPC: C08G63/40
Filed: 1947-09-22
Abstract: Polyesters are prepared by heating together an acid HOOC-R1-COOH (where R1 is a hydrocarbon, oxahydrocarbon or thiahydrocarbon radical) or ester or anhydride thereof with 2-15 per cent excess over equimolecular proportions of a compound HOROH (where R is an aliphatic hydrocarbon, oxahydrocarbon or thiahydrocarbon radical and the shortest chain between the hydroxyl groups contains at least 3 atoms), and mixing and heating the resulting low molecular weight condensation product having terminal OH groups with an amount of an acid chloride ClOC-R1-COCl substantially equivalent to the excess of glycol used in the first condensation.  In a modification the initial polymer may be formed by heating a monohydroxy monocarboxylic acid, e.g. hydroxydecanoic acid in the presence of a small quantity of glycol.  The acid chloride used may correspond with the acid used in the first step or the chloride of a different acid may be used.  More than one reactant of each kind may be employed to yield copolymers. Glycols specified are trimethylene, tetramethylene, hexamethylene, decamethylene, 1.3- or 1.4-cyclohexylene, diethylene, triethylene, dipropylene, 3-thia-pentamethylene, and the thia analogue of triethylene glycol and dipropylene glycol.  Dibasic acids mentioned are succinic, adipic, dihydracrylic, 3-thiapimelic, phthalic, terephthalic, phenylene diacetic, diphenylene dicarboxylic. Anhydrides are maleic, phthalic and succinic and esters are diethyl succinate, diphenyl adipate, diethyl phthalate and dimethyl phenylene-diacetate.  Acid chlorides mentioned are succinyl, adipyl, fumaryl, maleyl, sebacyl, roccellyl, phthalyl and its isomers, naphthalene dicarboxylic acid dichlorides, diphenylene dicarboxylic acid dichlorides, phenylene diacetyl; naphthalene dipropionyl and corresponding substance with O or S substituted for CH2.  If desired a low molecular weight polymer from an excess of glycol with a dibasic acid may be reacted with another low molecular weight polymer from an excess of dibasic acid chloride with a glycol.  The reactions may be conducted at atmospheric or reduced pressures in glass lined vessels or vessels of glass or tantalum.  The vessel is provided with a device for measuring viscosity without opening it.  The same device may be used to introduce a stream of inert gas. Examples describe the preparation of polyesters from (1) decamethylene glycol and succinic acid followed by succinyl chloride; (2) decamethylene glycol and isophthalic acid followed by isophthalyl chloride; (3) trimethylene glycol and adipic acid followed by adipyl chloride; (4) decamethylene glycol and phthalic anhydride followed by phthalyl chloride; and (5) decamethylene glycol and maleic anhydride followed by sebacyl chloride. Specifications 627,270 and 630,992 are referred to.
Patent GB-226783-A (GB)
Title: A process for separating krypton and xenon from the atmosphere
IPC: C01B23/00
Filed: 1924-10-28
Abstract: Krypton and xenon are obtained by evaporating liquid oxygen prepared from liquid air and passing the gases evolved through a vessel containing absorbent material, such as charcoal, which may be maintained at the necessary low temperature by immersing the vessel containing it in the liquid oxygen.  Preferably, the oxygen is submitted to a preliminary fractionation to bring its content of krypton up to about 0.008 per cent.  Specification 218,266 is referred to.
Patent GB-681853-A (GB)
Title: Improvements in artificial legs
IPC: A61F2/60
Filed: 1949-10-07
Abstract: 681,853. Artificial legs. STEWART, J. H. F. Oct. 7, 1949 [Oct. 8, 1948], No. 25764/49. Class 81 (ii). A sub-assembly, Fig. 4, for use in making an artificial leg comprises a shin member 12 having knee and ankle joints at its opposite ends and a hydraulic joint controlling unit therein, a thigh attaching member 74 attached to and forming part of the knee joint and connected to the control unit and adapted to receive a custom-fitted thigh socket, and a foot attaching member 44 attached to and forming part of the ankle joint and adapted to receive a foot member. As shown in Figs. 2 and 6 a foot member 14 is attached to the member 44 by means of screws 54 and cylindrical bosses 50, 52, whilst a thigh socket 10 is secured to the member 74. A covering, e.g. an elastic surgical stocking 98, encloses the entire leg whilst the control unit which is similar to that disclosed in Specification 643,734 and also controls movement of the ankle joint, is regulated by a switch 82 and cables 80 from a position on the thigh socket. The shin member 12 consists of a main frame 22 formed by outwardly bowed tubular members 24, joined at their upper ends by a U-shaped cross bar and at a point below their centre by a cross tube 30. Pivoted to the upper end of the frame is a knee bracket 60 the ears, such as 62, of which carry the main knee pivot 66 and the foot member 14 is pivotally secured to the lower end of the frame by a pivot pin 40.
Patent GB-957048-A (GB)
Title: Process for recovering sodium borohydride from a suspension thereof with sodium methylate in petroleum oil
IPC: C01B6/00
Filed: 1960-07-25
Abstract: Sodium borohydride, NaBH4, is recovered from a suspension thereof with sodium methylate in petroleum oil by extracting with water, separating the aqueous phase containing NaBH4, NaOH, and methanol, removing methanol therefrom, and recovering NaBH4 from the residue. The suspension is prepared by reacting NaH and trimethyl borate in suspension in a petroleum oil at 250-280 DEG  C. under atmospheric pressure. The suspension is extracted with H2O at 20-60 DEG  C., and the aqueous-alcoholic solution of NaBH4 and NaOH is separated by decantation or centrifuging, the oil being recycled.  The methanol is recovered by fractional distillation preferably under vacuum, and the methanol may be reacted with boric acid to form trimethyl borate which is returned to the process.  The aqueous NaBH4 and NaOH solution from the distillation is evaporated preferably under vacuum to a syrupy consistency, and evaporated to dryness at atmospheric pressure.  The NaBH4 is extracted from the solid residue by non-aqueous solvent, e.g. ethylene diamine, liquid ammonia, isopropylamine, dimethylformamide, n-propylamine, n-butylamine, or dimethyl sulphoxide, and the resulting solution filtered and evaporated to dryness.  The solvent may be recovered and recycled.
Patent GB-975651-A (GB)
Title: Improvements relating to the electrode system of a three-phase electric arc melting furnace
Inventor: LEIGH FRANCIS SIMON JOSEPH
IPC: F27D11/00
Filed: 1960-07-25
Abstract: 975,651. Arc furnaces current supply. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 6, 1961 [July 25, 1960], No. 25816/60. Heading H5H. An arc furnace has three electrodes movable vertically in and out of the furnace on respective parallel support arms arranged side-by-side each support arm having a connection member extending transversely thereto, that of the middle arm being horizontally overlapped by, though spaced from, the other two, and conductors including flexible loop portions extending to the connection members from a threephase transformer, the pair of conductors from each secondary winding of which extend in juxtaposition to each other, but each connection member being connected to different windings such that the latter are connected in delta. Secondary windings 4 are connected to the movable electrodes 1, 2 and 3, through a sub-station wall 10, by the three pairs of flexible conductors 5, each of which consists of two sets of flexible, insulated cables in the form of parallel curtains. The sense of connection of one winding is reversed with respect to that of the other two, and the connection members 13, 14 and 16 are arranged, such that the magnetic fields arising from the two curtains of each pair substantially cancel one another.
Patent GB-474104-A (GB)
Title: Improvements in or relating to silencing devices in wireless receiving sets
IPC: H03G3/26
Filed: 1936-09-23
Abstract: 474,104. Switch handles. GENERAL ELECTRIC CO., Ltd., ACKROYD, J. O., BIGGS, A. J., and CALLICK, E. B. B. Sept. 23, 1936, No. 25847. [Class 38 (v)] [Also in Group XL] A tuning-knob for radio receivers has a projecting pin 2 for silencing the set, the pin engaging a disc 5 which in turn depresses a collar 6 loose on the tuning shaft. The disc 5 may be integral with or separate from the collar 6.