baber/WOPTO huggingface dataset:
Patent GB-839453-A (GB)
Title: Improvements in or relating to protective helmets
IPC: A42C2/00
Filed: 1956-05-09
Abstract: 839,453. Moulding protective helmets. GENERAL TEXTILE MILLS Inc. May 9, 1956 [May 9, 1955], No. 14339/56. Class 87(2). [Also in Group VII] A protective helmet comprises a non-metallic inner shell 36, at least one layer of unimpregnated multiply fabric 20, 28 and a non-metallic outer shell 18. The shell 18 and 36 are formed by impregnating a fibrous material, such as a glass mat, with a synthetic resin. The fabric is a Iminanar material such as is described in Specification 796,147. The impregnating material is a thermoplastic such as polyethylene, alkyl plastic, polystyrene plastic, phenol formaldehyde compound, urea formal. dehyde resin, or the like. Alternatively the outer shell may be formed of an expanded plastic material such as vinyl resin plastic. Three methods of making the helmet are described. The outer shell 18 may be preformed and one or more layers of fabric 20 and 28 placed within it. A film 34 of non-adherent material, such as cellophane or aluminium foil, is then placed over the fabric, a mat of fibrous resin impregnated material is placed over the non adherent-film and cured to form the inner shell 36. In another method, layers 78 of the fabric protected on either side by films 76 and 80 of non-adherent material are placed between two outer layers 66 and 82 of resin impregnated fibrous material and cured in a heated mould 68 and 70. In yet another method, the inner and outer shells are both preformed and are bonded around their peripheries with plastic material after the fabric has been inserted between them. For this, the two shells may be preformed as in the second method but using a dummy filling between the non-adherent layers and preventing the edges of the shells from bonding together. Spaced holes may be  made in the non-adherent films to allow small columns of resin to link the fabric to the shells, Fig. 4 (not shown)..
Patent GB-1439271-A (GB)
Title: Purification of chlorinated hydrocarbons
IPC: C07C17/395
Filed: 1973-03-26
Abstract: 1439271 Purification of chlorinated hydrocarbons IMPERIAL CHEMICAL INDUSTRIES Ltd 25 March 1974 [26 March 1973 (2)] 14343/73 and 14344/73 Heading C2C A chlorinated hydrocarbon contaminated with one or more bromohydrocarbons, optionally also chloro-substituted, is purified by contacting with a solution of an ionizable chloride in a solvent medium comprising water and/or a dipolar aprotic solvent in which the contaminated chlorinated hydrocarbon is at least partially soluble and subsequently separating the desired product. The ionizable chloride is preferably HC1, ammonium chloride or an alkali metal, alkaline earth metal or rare earth metal chloride, particularly NaCl. At least a stoichiometric amount of the chloride is added required to replace the Br content of the bromohydrocarbon but not more than 50 moles per mole of impurity. If HCl is used it is present in 5-35 wt. per cent and if ammonium or metal chlorides are used they are present in at least 5 wt. per cent. A quaternary ammonium salt may also be present in 0.01-10% by weight of the chlorinated hydrocarbon, e.g. tetra-heptyl ammonium chloride. In the examples 1,1,2- trichloroethane and perchloroethylene containing 1 -bromo-2-chloroethane contaminant are purified.
Patent GB-458562-A (GB)
Title: Machine for engraving rings
IPC: B44B3/00
Filed: 1936-05-21
Abstract: 458,562. Stamping. BLOIS, F., 9, Rue Charlot, Paris. May 21, 1936, No. 14384. Convention date, May 24, 1935. [Class 83 (iv)] [See also Group XVI] In a machine for engraving rings comprising a striker-rod co-operating with a punch carrying the character to be punched on the interior of a ring which is placed on an anvil, and means adapted intermittently to rotate the ring for the successive punching of the characters, the striker-rod acts on an interchangeable blade carrying the punch and located in a blade-carrier which is provided with a device for adjusting the position of the punch-blade for satisfactory punching. The striker-rod 2, Fig. 1, is depressed against a spring 4, its stroke being limited by a nut 3a provided with a vernier scale. The ring 5 rests on an anvil 6, and is rotated by grooved rollers 7 carried on spindles 7a, 11, Fig. 4, on carriages 9, 9a, sliding on a guide 10, and drawn towards each other by spring 18. The rollers 7 are rotated by gears 12, 13 from a ratchetwheel 14, which is operated by a pawl 15 on a hand lever 16 and provided with a detent 14a. During each rotation of the ring the carriages 9, 9a are raised slightly by hand to prevent rubbing on the anvil. The carriages are separated to insert or remove the ring by a cam 19, acting on the spindle 7a and a stud 22 and rotated by a knob 21. The selected punchblade 23 is placed on the carrier 24 with its punch 23a inside the ring, and is adjusted for perfect impression by a nut 26 operating a screw 25 engaging in a notch 23b in the blade. A number of the blades may be pivoted to a comb 27, Fig. 5, by a rod passing through the notches 23b. The comb is slidably mounted in a slide 29, so that the selected blade can be brought into position and swung down to engage the ring. The adjusting-screw 25 acts on the whole comb 27. Alternatively, the blades may be mounted in radial slots in a disc, rotatably mounted on the carrier 24 and adjusted by the screw 25. The required blade is selected by means of indicia on the disc showing through an aperture 31a, Fig. 8, in a fixed cover 31, and is then projected by a lever 32, pivoted to the cover at 32a and provided with a pin 34 passing through a slot 31b in the cover into a notch 23c in the selected blade.
Patent GB-1375133-A (GB)
IPC: C30B13/30
Filed: 1973-03-26
Abstract: 1375133 Zone-melting SIEMENS AG 26 March 1973 [13 July 1972] 14413/73 Heading B1S A (III)-orientated monocrystalline semiconductor rod having a specific resistance which is lower at the central axis of the rod than at its outer surface by zone melting a vertically supported rod by producing a molten zone in the supported rod by an annular inductive heating device, and passing the zone through the rod from a (III)-orientated seed crystal located at one end at a speed in the range of 0.2 to 2 mm/min. so that the boundary between the molten zone and the recrystallised portion of the rod presents a constantly convex face towards the molten zone. The seed crystal may be rotated at a speed of 10 to 100 r.p.m. The monocrystalline rod may be subsequently heat treated in a silicon tube. The semiconductor may be silicon.
Patent GB-448145-A (GB)
Title: Purification of aliphatic acids
IPC: C07C51/487
Filed: 1935-05-17
Abstract: Aliphatic acids which have been made by oxidation of aldehydes are separated from the reaction mixture by fractional distillation and then treated by aeration in presence of an oxidizing catalyst to remove residual impurities, after which the acid may be distilled to free it from the catalyst.  Suitable catalysts are vanadium salts, vanadium oxide, and ammonium metavanadate.  Acids mentioned are acetic, propionic, butyric, caproic, and 2-ethylbutyric acids.  The purification treatment may be effected in a vertical aluminium vessel heated by a steam coil and provided with a reflux condenser.  The temperature may be 90--120 DEG  C. Pressure may be employed.
Patent GB-1064117-A (GB)
Title: Improvements in or relating to paper-making machines and like apparatus
IPC: D21F9/02
Filed: 1963-04-10
Abstract: A paper machine (Fig. 1, not shown) which may be used for test purposes, e.g. for studying the behaviour of paper stock on a foraminous wire or for producing "hand-made" papers, comprises a stationary wire (11) supported by rollers (14) which move continually along the length of the wire, and a stock supply nozzle (21) which may also be drawn over the length of the wire to distribute stock thereover.  The nozzle (21) is connected by a flexible conduit (22) to a stock supply tank (26).  The conduit (22) passes through the nip of rolls (24a 24b) rotation which serves the dual purpose of moving the nozzle (21) from its extended position, as shown, to a retracted position at the other end of the wire and of extruding stock from the conduit and nozzle on to the wire during this movement.  The rollers (14) are mounted on a pair of endless conveyor chains (15) which pass around drums (12).  Drive to the latter is connected with the drive to the roll (24b) so that the speed of movement of the nozzle is related proportionally to the speed of the rollers (14).  Deckles (25) define the size of the sheet to be formed and the wire (11) may be tensioned by a weight suspended from its end.
Patent GB-560703-A (GB)
Title: Improvements in means for mixing liquids
IPC: B01F15/04
Filed: 1942-10-16
Abstract: 560,703. Mixing liquids. LANGLEY, T. W., and TECALEMIT, Ltd. Oct. 16, 1942, No. 14551. [Class 86] An apparatus for mixing liquids comprises a liquid receiver 1, a tube 3 therein through which a liquid can be added to that in the receiver, the ratio of the cross-sectional area of the tube and that of the free space within the receiver being substantially the same as that of the quantity of liquid to be added and the liquid in the receiver, and means whereby the mixture may be delivered when the liquids reach a predetermined level in the receiver. The receptacle has an air-tight closure through which pass the tube 3, a siphon tube 9 and a vent tube 4, the height of the lower end of which is adjustable. The receiver should be filled with the first liquid to a level such that additional liquid equal to the capacity of the tube 3 will cause siphoning. The second liquid is then supplied by the funnel 6 until siphoning occurs. A corrugated wire 14 may be provided to keep the tube 3 clear.
Patent GB-1427306-A (GB)
Title: Process for producing sulphuric acid
IPC: C01B17/76
Filed: 1974-04-02
Abstract: 1427306 Sulphuric acid NAUCHNOISSLEDOVATELSKY INSTITUT PO UDOBRENIYAM I INSEKTOFUNGITSIDAM IMENI PROFESSORA YA V SAMOILOVA and MOSKOVSKY INSTITUT KHIMICHESKOGO MASHINOSTROENIA 2 April 1974 14629/74 Heading C1A Sulphuric acid is produced by oxidizing a gaseous mixture containing sulphur dioxide and not more than 0À02% by volume of moisture to form sulphur-trioxide which is absorbed in 92-98% by weight sulphuric acid at a rate of not more than 1À5 k. per k. of sulphur-trioxide-containing gaseous mixture, the temperature of the gas to mixture contacting the acid being from 30‹ to 125‹ C., and the gas flow velocity being not less than 13 metres per sec. calculated at normal temperature and pressure. Preferably, the concentration of sulphur trioxide in the gas is not less than 0À25% by volume. In one embodiment, sulphur is burnt in a furnace in air and the resulting gas containing sulphur dioxide delivered to a contact apparatus where sulphur dioxide was oxidized to sulphur-trioxide. The emergent gas is cooled and delivered to an absorption unit consisting of three stages, each comprising a plurality of vertical tubes operating in parallel and provided with a cooling jacket. The gaseous mixture containing SO 3  and free of water vapour is then passed through the three stages in an upstream flow to sulphuric acid absorbent. At each stage the sulphuric acid is fed into the lower part of the absorption tubes where it is entrapped into the gas stream, and as it moves through the tubes it absorbs SO 3  from the gas. Sulphuric acid is separated from the gas stream at the outlet of the absorption tubes of each stage. If pyrite is used as the starting material, the gas prepared in roasting is first purified, then dried and delivered into a contact apparatus. An object of the invention is to decrease the content of sulphuric acid fog in exit gases from sulphuric acid manufacturing plant.
Patent GB-567629-A (GB)
Title: Improvements in or relating to transformers
IPC: H01F29/06
Filed: 1943-09-07
Abstract: 567,629. Transformers. BURGE. H. O., and CROMPTON PARKINSON, Ltd. Sept. 7, 1943, No. 14639. [Class 38 (ii)] In a polyphase regulating transformer, particularly for speed control of A.C. commutator motors, and comprising tapped windings, the tap leads of which are connected to the segments of a cylindrical commutator 4 associated with angularlyadjustable brush gear 6, the brushes are interconnected to form a movable star point. In the arrangement shown, the line connections 17, 18, 19 are made to the mid-point of each winding so that voltages variable from zero to a maximum in either direction are produced by shifting of the brushes from the neutral position. The voltage variation is continuous, the brushes serving as voltage dividers when in a bridging position between two segments. Wide segments may, however, be provided at those positions on the ring where the brushes are likely to remain for long periods, and metallic contacts, preferably in the form of knife switches, may be provided for short-circuiting the brushes at such positions. In a modification, a single brush covering three segments connected to corresponding taps on successive phases is used. The line connections may also be adjustable along the windings.
Patent GB-942585-A (GB)
Title: An ophthalmic instrument for subjective refraction
IPC: A61B3/04
Filed: 1961-04-24
Abstract: 942,585. Sight-testing apparatus. L. C. STEPHENS. April 9, 1962 [April 24, 1961], No.14659/61. Heading G2J. A device for subjective refraction of an eye comprises a rod 19 which at one end carries a concave cylinder lens 29 with its axis at 45 degrees to the rod and at the other end carries two lenses 20, 21 in edge to edge relation. Lens 20 is a convex cylinder, while lens 21 is a concave cylinder, both lens axes being parallel to the rod 19. In a modification, lens 29 is a convex cylinder. All the lenses in a single instrument are of the same power. The Specification explains how the device should be used.
Patent GB-311943-A (GB)
Title: Improvements in or relating to couches
IPC: A47C17/02
Filed: 1928-05-18
Abstract: 311,943. Heal & Son, Ltd., and Johnson, J. F. May 18,1928. Ambulances.-A couch and/or seat comprises two side members 1, 2 interconnected throughout their length by flat bars 3 which form a rigid reclining or supporting surface, each side member having a curved head end 5, an oppositely curved foot end 6 and substantially flat intermediate portion, the head being supported on legs 10 and the foot having downwardly projecting bars 13 to carry wheels 16. The legs 10 and for the supports 13 may be adjustable, removable and/or telescopic. Wheels may also be provided upon the legs 10, the device then serving as an ambulance.
Patent GB-898888-A (GB)
Title: Electrical precipitator
IPC: B03C3/38
Filed: 1960-04-27
Abstract: 898,888. Electrostatic precipitation. AEROTEC INDUSTRIES Inc. April 27, 1960 [May 6, 1959], No. 14735/60. Class 39(1). In an electrostatic precipitator for inductrial gases there is an ionizing section formed by flattened tubular electrodes 2, Fig. 1, through which cooling or heating fluid is circulated and one or more ionizing electrodes 1 spaced midway between electrodes 2, a collecting section having grounded collecting plates 4 and high voltage negative plate electrodes 5 and grounded plate portions 3 extending substantially the entire distance from 2 and collecting electrodes 4, 5 and spaced apart the same distance as electrodes 2. The ionizing means comprises one, two or more wires 1 in each section at a high negative potential and passive electrodes 2 are at a low positive potential. The wires 1 are vibrated to remove dust. In modifications, Figs. 2, 3 (not shown), plates 3 are integral with collectors 4 and may be connected to, or spaced from, the electrodes 2. The ends of electrodes 3, 5 may have cylindrical enlargements. The fluid is cooling water or hot industrial gas. Specification 643,363 is referred to.
Patent GB-623947-A (GB)
Title: Improvements relating to clutch devices
IPC: F16D65/38
Filed: 1947-06-04
Abstract: 623,947. Adjusting brakes. PRATT, J. H., and MANLEY, G. E. June 4, 1947, No. 14743. [Class 103 (i)] [Also in Group XXIV] In an expanding-shoe brake of the kind described in Specification 614,692, in which a feeler device 17, Fig. 1, automatically maintains a predetermined running clearance between the brake shoes and drum, and the development of lost motion between the shoes and the expander mechanism is prevented by a unidirectional gripping device comprising a rod 81 on one brake shoe 6 passing through an eyed or slotted member 9 which slips over the rod 81 when acted on axially by a return spring 12 but grips it when canted by the eccentric loading of the brake expander plunger 71, the eye is provided with oppositely disposed self-aligning gripping members 101 having flattened bearing surfaces engaging flattened bearing surfaces on the rod 81. The gripping members 101 are staggered as shown, and comprise turnable pins having centrallydisposed flats 103, Fig. 4, co-acting with flats on the rod 81. In Fig. 5 (not shown) the pins are replaced by hemi-spherical elements. According to the Provisional Specification, the bearing surfaces may be of flattened elliptical form.
Patent GB-425336-A (GB)
Title: Improvements in or relating to methods of strengthening the walls of steam drums or other pressure vessels around apertures formed therein
IPC: F22B37/00
Filed: 1934-05-16
Abstract: 425,336. Welded pipe connections. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN, 30, Creoselaan, Utrecht, Holland. May 16, 1934, No. 14809. Convention date, Dec. 12, 1933. [Class 99 (i)] [See also Groups XXII and XVIII] To strengthen the wall 3 of a boiler drum or other pressure vessel around an opening therein, a portion of the wall around the opening is replaced by an annular strengthening member 9 of greater thickness than the wall and secured by welding to the edge of the opening. A pipe connection 2 is welded in the centre of the annular member.
Patent GB-902677-A (GB)
Title: Process for the manufacture of concentrated solutions of terpene-hydroperoxides in terpene-hydrocarbons from dilute solutions
IPC: B01D1/22
Filed: 1959-04-30
Abstract: <PICT:0902677/III/1> A dilute solution of a terpene hydroperoxide in a terpene hydrocarbon is concentrated by feeding it from a vessel 1 to a film evaporator 2, the vapours from which pass to a rectifying column 3 to which fresh terpene hydrocarbon is fed from a vessel 4. A concentrated solution of terpene hydroperoxide is collected in vessel 9, this colution containing also any high-boiling impurities, e.g. sesquiterpenes diterpenes, polyterpenes and their alcohols, present in the terpene fed to the rectifying column 3.  These impurities may be removed by further evaporation but are preferably allowed to remain in the solution, since they act as stabilizing agents for the hydroperoxide.  The terpene vapour from the rectifying column 3 is condensed in a condenser 5 and passes by way of a heat-exchanger 6 to reactors 7, 8 in which it is oxidized to produce a dilute solution of hydroperoxide, which is supplied to vessel 1. An example is given of the treatment of a 7% solution of p-menthane hydroperoxide in p-menthane to yield a solution of 50% concentration.
Patent GB-272230-A (GB)
Title: Process and apparatus for producing a chain stitch
IPC: D05B1/06
Filed: 1927-06-07
Abstract: 272,230. Union Special-Maschinenfabrik Ges. June 5, 1926, [Convention date]. Chain-stitching. - Chain stitches are formed by retaining a needle thread loop on a looper until a further needle thread loop is formed, drawing the second loop through the first by a separate looper and then releasing the first loop. The mechanism employed comprises two oppositely oscillating loopers 7, 11, the looper 7 being oscillated about a fixed pivot by a rod 9 and the looper 11 oscillated by a rod 12 about a pivot 10 which is raised: and lowered by reason of being mounted on a lever 14 oscillated by an eccentric strap 17. As the needle descends it passes adjacent to a loop a<3> held by the withdrawn looper 7. The looper 11 moves forward and engages the loop a' while the looper 7 moves to engage the new loop a<4> thrown by the needle. The looper 11 then moves downwards owing to its reciprocated pivot mounting and is withdrawn, carrying with it the loop a' through which the loop a<4> is drawn by the looper 7. The loop a<3> finally slips off the looper 11 and is drawn up. The looper 7 is formed with a channelled recess 18 along which the looper 11 passes. The loopers may be mounted to reciprocate instead of oscillating about pivots.
Patent GB-373777-A (GB)
Title: Improvements in or relating to bedsteads, ships berths and the like
IPC: A47C19/20
Filed: 1931-05-21
Abstract: 373,777. Bedsteads. HOSKINS & SEWELL, Ltd. and HARVEY, J. H., Midland Works, High Street, Bordesley, Birmingham. May 21, 1931, No. 14953. [Class 52 (ii).] Bedsteads, berths, &c. of the kind having head and foot ends, of identical construction, detachably carrying a rectangular bed-bottom frame 7, have the posts 1 made from L.section bars having their upper ends reduced, as at 3, to enter the lower ends of the posts of another similar bedstead, when superimposed thereon in tier formation, and to form a ledge or support therefor. A lip 6 may be pressed from, riveted or pivoted to, or otherwise formed or fitted on the inside of each post near its lower end, to engage the upper end of the post of the lower bedstead.
Patent GB-1008483-A (GB)
Title: Improvements in or relating to seed drills
Inventor: MARRIOTT NORMAN DENNIS
IPC: A01C7/04
Filed: 1963-04-16
Abstract: 1,008,483. Seed sowing machines. E. A. WEBB Ltd. July 17, 1964 [April 16, 1963], No. 14962/63. Heading AlD. In a seed drill similar to that described in Specification 795,062 the selector wheel 22 is provided with at least two rows of pockets, the pockets of at least one of the rows being joined by an annular groove, in which a blanking means 29 is movable between a position in which it blanks off the pockets of the part of the periphery of the wheel adjacent the seed chamber 17, and a position in which it allows seeds to enter the pockets of the wheel. The blanking means is manually operable and has a hand lever 32, and the two positions of the lever are shown in full and chain lines in Fig. 1. Locking means is provided to lock the blanking means in one or both positions. Ejector plates 27 are positioned in the grooves. The wheels 22, 18 are driven by wheels 11 through change speed gearing 37, 38, 43, 44, 45 (Fig. 4). Alternatively the drill may be driven from wheels 12 or by means of a power take-off shaft of a tractor.
Patent GB-241859-A (GB)
Title: Improved means for regulating the feed of the boilers of variable speed steam engines
IPC: F22D1/46
Filed: 1925-06-09
Abstract: 241,859. Muchka, J. Oct. 27, 1924, [Convention date]. Feedwater, supplying and controlling. - The feed-water supply of a locomotive boiler is regulated in accordance with the partial vacuum in the smokebox. The feed pump comprises a cold water pump 1 and hot water pump 2 driven from the engine mechanism. Cold water is drawn through a pipe 4 and delivered by the pump 1 to a jet condenser 3 supplied with exhaust steam. The heated water passes through the pump 2, which delivers it through valve 5 to the boiler. A regulating valve 6, Fig. 2, comprises a valve member 7 controlled by a diaphragm or piston 8 and spring 9. The chamber 11 is connected by a pipe 10 to the blast pipe 17, so that the passage through a by-pass pipe 12 connecting the suction and pressure sides of the pump 1 is controlled by the suction pressure in the pipe 17. The valve 6 is arranged so that water can flow along the spindle into the chamber 11 and pipe 10, thus preventing the entrance of soot, flue dust, &c. In an alternative form, the valve 6 may control the supply of steam to a steam feed pump.