baber/WOPTO huggingface dataset:
Patent GB-151692-A (GB)
Title: Improvements in or relating to the moulding of concrete products, such as blocks, panels, structures and the like
IPC: B28B7/30
Filed: 1919-06-20
Abstract: 151,692. Woolcock, J., and Stewart, W. J. June 20, 1919. Moulds.-In apparatus for moulding concrete products, for example blocks, panels, and conduits, wherein india-rubber or like material is used for the surfaces of the moulds or cores, the rubber surfaces are so arranged that when they are slightly contracted by removing their supports or by the tension necessary to remove them, they can be separated from the moulded surface by a sliding movement parallel thereto. Fig. 2 shows an arrangement for moulding building-blocks. A number of compartments are formed by longitudinal partitions c crossed by transverse partitions; in these the blocks are moulded, the corner shoulders being formed by rubber surfaces g backed bv filling blocks f, and the cavities are formed by rubber tubes supported internally by wooden or metal cores j, k, or by helical spring members m. n, or by gas or liquid pressure, the tubes in this case having a non-extendable lining. In moulding a pipe-line or sewer, concrete is put in a trench 1, Fig. 6, and blocks 3 are arranged to support rubber tubes 4 supported internally in the above-described manner. The conduit is moulded around these in limited lengths so that the rubber tubes can be withdrawn as described.
Patent GB-958987-A (GB)
Title: Injection moulding machine
IPC: B29C45/70
Filed: 1962-04-24
Abstract: 958,987. Injection moulding machines. C. C. GRAVESEN. April 24, 1962 [April 24, 1961], No. 15573/62. Heading B5A. An injection moulding machine has an injection piston 13 which is operated by a toggle means 22, 23 during the feeding stroke, i.e. the first part of its stroke, and by a fluidpressure accumulator (not shown), during the injection stroke, i.e. the last part of its stroke. The machine, which is operated by one hydraulic jack 18, is initially in the open position shown in Fig. 1. The hydraulic jack 18 is operated to rotate a guide member 17 in a clockwise direction. This causes two toggles 8 . . . 11 to close the mould parts and at the same time causes the toggle 22, 23 to straighten and so perform the feeding stroke of piston 13. When this position (Fig. 2, not shown), has been reached a valve 34 is opened so that a piston 26, which has been held to the right by hydraulic fluid in cylinders 31, 32, is forced to the left by the pressure accumulator and, through the straight. ened toggle 22, 23, performs the injection stroke of piston 13. This toggle is kept straight by its pivot 24 engaging in a slot 21 in a plate 17. After injection the jack 18 is operated to return the parts to the initial position and the piston 26 is forced to the right by a traverse 35 and rod 36 and hydraulic fluid is sucked into the cylinders 31, 32 to hold the piston in this position against the action of the pressure accumulator which is connected to a conduit 28.
Patent GB-1096396-A (GB)
Title: Purification of sulfur
IPC: C01B17/02
Filed: 1966-04-07
Abstract: Sulphur which is contaminated with sulphur chlorides and iron halides is purified by contacting the contaminated sulphur with an aqueous medium maintained under superatmospheric pressure at a temperature above the m.p.of said contaminated sulphur to dissolve the impurities in the aqueous medium and separate the purified S from the aqueous phase.  The preferred aqueous media are water and a dilute caustic solution.  The contaminated sulphur may be produced as a by-product in the manufacture of CCl4 by the chlorination of CS2 and is passed in the form of molten droplets countercurrently through the aqueous medium which washes out the sulphur chloride and iron chloride, the molten sulphur being collected after passage through the aqueous phase and allowed to solidify.
Patent GB-263406-A (GB)
Title: Improvements in and relating to fanlight and like hinged window opening and closing apparatus
IPC: E05F11/14
Filed: 1926-06-22
Abstract: 263,406. Roberts, A. June 22, 1926. Fanlight and pivoted-window open- and closing apparatus.-The casing 5 of a pinion-and-rack operating mechanism for fanlight and like windows is pivoted on the pinion 4 and provided with rollers 8 which maintain engagement between the rack and pinion. The two parts of the casing 5 are adapted to be bolted together around the pinion and shaft 1. The shaft may be mounted in ball-bearing brackets on the frame and is operated by a chain and pulley through worm gearing or the like. A counterbalancing device is preferably provided consisting of a snail cam 16 carrying a cord and weight 15, 14.
Patent GB-1386662-A (GB)
Title: Preparation of 6-demethyl-6-deoxy-6-methylene-11alpha-bromo- tetracyclines and 9-bromo-anhydrotetracyclines
IPC: C07C233/00
Filed: 1972-04-05
Abstract: 1386662 Bromo-tetracycline derivatives PLIVA PHARMACEUTICAL & CHEMICAL WORKS 5 April 1972 [5 April 1971] 15688/72 Heading C2C 6 - Demethyl - 6 - deoxy - 6 - methylene - 11α-bromo-tetracyclines (III) and 9-bromo-anhydrotetracyclines (IV) are prepared according to the following reaction sequence, wherein R represents -H or -OH In the reaction sequence, tetracycline (I, R = H) or oxytetracycline (I, R = OH) is reacted with bromine in the presence of pyridine or morpholine to give an 11a-bromo-tetracycline- 6,12-hemiketal (II). The latter is then dehydrated with either a mixture of sulphuric acid and acetonitrile resulting in the 6-demethyl-6- deoxy - 6 - methylene - 11a - bromo - tetracycline (III), or a mixture of sulphuric acid and glacial acetic acid resulting in the 9-bromoanhydrotetracycline (IV). When sulphuric acid alone or containing 30% water is used, a mixture of (III) and (IV) are obtained, the proportion of the anhydro-derivative IV increasing with the concentration of the sulphuric acid. In a comparative example, tetracycline is brominated to 11a-bromotetracycline-6,12-hemiketal with N-bromosuccinimide.
Patent GB-279026-A (GB)
Title: Improvement in the manufacture of asphaltic, bituminous or tarry emulsions
IPC: C08L95/00
Filed: 1927-06-13
Abstract: 279,026. Soc. Anon. la Trinidad. Oct. 15, 1926, [Convention date], Emulsions, making.-To natural or artificial bitumen or asphalt pulverulent or colloidal mineral matter is added and the pasty product is mixed with an anhydrous emulsifying agent, comprising a soda or potash soap containing 1-8 per cent of added commercial olein. The mixture may be converted into an emulsion by stirring with hot or cold water. The bituminous paste is brought to a fluid condition before mixing by heating to from 100-150‹ C. and by the addition of residual oil of petroleum, or the like. The emulsifying agent may be added in a cold condition. The Specification as open to inspection under Sect. 91 (3) (a) states that the pasty product used may be bituminous or asphaltic material naturally containing pulverulent or colloidal mineral matter and refers to schist oil or tars as suitable fluxes. This subject-matter does not appear in the Specification as accepted.
Patent GB-1262967-A (GB)
Title: Method of treating semiconductor devices to improve lifetime
IPC: H01L27/00
Filed: 1969-03-26
Abstract: 1,262,967. Image pick-up tubes; semiconductor devices. R.C.A. CORPORATION. 26 March, 1969 [11 April, 1968], No. 15761/69. Headings H1D and H1K. Minority carrier lifetime reducing impurities are gettered from a semi-conductor body with an insulating coating by heating in an atmosphere comprising a hydrogen halide but free of water vapour. Volatile halides of the impurities are formed at the surface thus creating an outdiffusion impurity gradient within the body. In a typical case a vidicon target is formed from an N-type silicon wafer 4 with a thickened periphery and an N+ diffused region 8 at one face by first gas etching at 1100 C. in hydrogen containing hydrogen chloride, cooling, heating for 3 minutes at 1200 C. in dry oxygen, continuing the heating for 4 hours after introducing 1 vol. per cent hydrogen chloride into the oxygen and then cooling in helium and annealing for 15 minutes at 500 C. in hydrogen if desired. Apertures are next etched in the oxide layer formed in the preceding steps, borosilicate glass deposited and boron diffused therefrom to form P-type inclusions 5. During or after this diffusion further gettering is effected in a dry hydrogen chloride containing atmosphere.
Patent GB-597658-A (GB)
Title: Improvements in clothes horses and the like
IPC: D06F57/08
Filed: 1945-06-21
Abstract: 597,658. Clothes - horses. JOSEPH, R. June 21, 1945, No. 15798. [Class 52(v)] The rails 7 of a clothes-horse are pivotally connected to the side faces of the uprights to facilitate folding, and the parts can be clamped by wing-nuts 9. The rails may also be jointed.
Patent GB-433397-A (GB)
Title: Purification of cellulose aralkyl ethers
IPC: C08B11/16
Filed: 1934-05-28
Abstract: Cellulose aralkyl ethers are purified by treatment, preferably at elevated temperatures, with a medium containing an alkali metal bisulphite, said medium being capable of swelling but not dissolving the cellulose ether.  A suitable medium consists of a mixture of a water-miscible alcohol, a hydrocarbon, and a concentrated aqueous solution of an alkali metal bisulphite. Advantageously, residues of bisulphite are removed from the treated and washed cellulose ether by treatment with an alkaline solution.  In an example, benzyl cellulose is treated with two consecutive portions of a mixture of a saturated aqueous solution of sodium bisulphite, alcohol, and benzene.  The benzyl cellulose is then washed, suspended in a solution of sodium bicarbonate, and again washed until the pH value of the washings lies between 8 and 10.  The purified ether, when made into a plastic and tinted with titanox and a mixture of rhodamine GS and rhodamine 6GBS, may be used in the manufacture of dental blanks.
Patent GB-1169262-A (GB)
Title: Improved floatable vessel
Inventor: WILLIAMSON ROBERT HENRY
IPC: B63B35/44
Filed: 1967-04-06
Abstract: 1,169,262. Floating platform. VICKERS Ltd. 20 Feb., 1968 [6 April, 1967], No. 15839/67. Addition to 1,106,258. Headings B7A and B7S. [Also in Division E1] The floatable vessel described in Specification 1,106,258 is provided with a plurality of mooring lines 4 connected to the vessel at or near the lower end of the column 1 and attached to anchorage points, and each mooring line extends over a support 6 connected to the superstructure 3 by slidable ring 8 and lifting cables 12. Displacement of the superstructure 3 along the column 1 assists in tensioning the mooring lines 4. The supports 6 may be either sprockets or toothed wheels in which case the mooring lines are either chain cables or studlink cables respectively.
Patent GB-673680-A (GB)
Title: Improvements in or relating to feeding appliances for animals
IPC: A01K9/00
Filed: 1949-06-15
Abstract: 673,680. Animal feeding appliances. COVINGTON, F. W. June 14, 1950 [June 15, 19491. No. 15910/49. Class 5(ii) In calf-feeding apparatus, teats 15 project from a milk container 13. The teats consist of a body portion 22 enclosing a hollow slidable tube 31 which at one end projects beyond the rubber sheath 26 and at the other ends in a conical valve 27 seating in the body portion and having transverse ports 29. Pressure on the sheath 26 tilts a lever 34 pivoted to the body 22 and causes projections 35 to press the collar 32 on the tube 31, against the action of a spring 33, to lift the valve 27. The base 12 of the container 13 rests on springs 14 surrounding guide posts 11. As milk 'is withdrawn the container rises until the teats 15 are masked by loops on the ring 8. This prevents insucking of air. When, however, the rising container-top engages a projection from the trip rod 20, the supply to the container is replenished from a reservoir 19. Pans 21 for dry food are supplied on the shelf portion 2'. The necessity for replenishment may be indicated by an electric signal. The milk temperature may be maintained by an immersion heater.
Patent GB-1392501-A (GB)
Title: Striped dichroic filter and method for making the same
IPC: G03B33/00
Filed: 1972-04-06
Abstract: 1392501 Image pick-up tubes OPTICAL COATING LABORATORY Inc 6 April 1972 [19 April 1971] 15930/72 Heading H1D [Also in Divisions G2 and H4] A striped dichroic filter, e.g. for use in a colour television pick-up tube, includes a transparent glass substrate bearing on its surface a set of spaced parallel stripes capable of reflecting one colour, and another set of spaced parallel stripes capable of reflecting a different colour and disposed on the surface at an angle to the first set such that the two sets overlie each other on certain areas of the surface, each of the stripes being formed of a plurality of layers of high and low index dielectric materials. The filter may be made by repeated use of the method claimed in Specification 1,392,502 (see Division G2); e.g. a red reflecting set of stripes may be formed first, using quartz and titanium dioxide as the low and high index materials respectively, and the process repeated to give a set of blue reflecting stripes, oriented at an angle of about 41 degrees to the first set, and formed of the same materials, whereby the first set transmits blue and green; the second set green and red; the areas of overlap green; and the uncoated areas substantially all the incident light. If desired, a third set of stripes, reflecting a third colour, set at an angle to both the other sets, and employing zirconium oxide as the high index material, may be superimposed on the other two sets by repeating the process a third time. The filter may be disposed on the inner surface of the faceplate of a videcon tube, or, by displacing the image plane by use of a fibre optics plate or relay lens, outside the tube.
Patent GB-240555-A (GB)
Title: Improvements in variable inductances
IPC: H01F21/00
Filed: 1924-07-04
Abstract: 240,555. Clough, N. H. July 4, 1924. Inductances.-A variometer is provided on the inner or outer periphery of the coil, which is readily detachable, with a metallic shield, and points on the shield are connected together in such a way that a variable length may be shortcircuited. In the form shown, the shield consists of a split cylinder 2 arranged on the inner periphery of the coil 1. A saddle piece 4 connected to one end of the strip 2 is pressed by spring washers 5 against an arm 6 carried by a tube 7 fast on a spindle 8. The arm 6 has at its end a brush 9 making contact with the strip 2. In a modification, the strip is provided with oppositely directed supporting flanges. A flanged split tube fixed to the spindle carries a brush making contact with the strip, and connection from one end of the strip to the tube is effected bv means of a fixed brush. In another modification the shield consists of a strip of foil wound on a bobbin and secured at one end to the coil. The bobbin is carried by an arm rotatable about the axis of coil whereby a variable length of the foil may be arranged to lie along the periphery of the coil.
Patent GB-972041-A (GB)
Title: Improvements in resilient units for chairs or the like
IPC: A47C7/32
Filed: 1963-04-24
Abstract: 972,041. Upholstery springing. M. HELLER. April 24, 1963, No. 16149/63. Heading A4M. A resilient structure for chairs or the like comprises seat and back units each of the units consisting of a plurality of tension springs a of substantial length and a single transversely disposed inextensible member b suspended by the inner ends of two opposing groups of springs a, the outer ends of the groups being secured in tensioned condition to a frame c. As shown in Fig. 2 the lower group of springs of the back rest are secured to a cross rail d below the level of the seat proper. The rear anchorages of the springs extending over the seat proper are provided by a cross rail e. In a modification shown in Fig. 3 the rear group of springs for the seat proper and the lower group of springs for the back are secured to a common rigid cross rail f.
Patent GB-283414-A (GB)
Title: Hollow wall
IPC: E04B2/02
Filed: 1927-06-17
Abstract: 283,414. Layer, E. June 17, 1927. Building blocks, special shapes of.-Hollow blocks for cavity walls consist of one or more units the height h of which, Fig. 5, equals twice the length or breadth plus a mortar-space, the length and breadth being equal. In blocks of more than one unit the length e' only is varied and is given by the formula l<1> = x (l + f)-f, x being the number of units, l the length of a unit, and f the thickness of a mortar space. The axes of the hollow spaces coincide with the vertical axes of the units composing the blocks. The cavities may be closed.
Patent GB-811798-A (GB)
Title: Citrus concentrate product
IPC: A23L2/12
Filed: 1956-05-25
Abstract: Citrus juice concentrate is prepared by removing the flavedo layer from the underlying albedo layer of, e.g. oranges, pressing the fruit consisting of the albedo layer and tissue with enclosed juice to rupture it and remove the fruit juice without crushing the seeds, separately compressing the albedo and tissue of the p  juice cells to remove the albedo juice, adding the albedo juice to the fruit juice to provide between 1 and 5 per cent of albedo juice based on the weight of the final fruit juice concentrate, and either before or after addition of the albedo juice removing water from the fruit juice in successive stages of freeze dehydration, e.g. by lowering the temperature of successive stages by 5 DEG  F., starting with a temperature of 23 DEG  F. in a first tank and reducing to 3 DEG  F. in a fifth tank.  The juice is agitated during freeze dehydration to prevent adherence of ice crystals to the freezing means. Substantially all of the water is removed as ice crystals which are collected, e.g. by decantation and/or centrifuging the resulting concentrate having a Brix value of from 40 DEG  to 66 DEG  F.  Cans are flushed with carbon dioxide or nitrogen before introducing the concentrate.
Patent GB-169235-A (GB)
Title: An aid to sound detection for road vehicles
IPC: G10K11/22
Filed: 1920-06-17
Abstract: 169,235. Hyland, C. June 17, 1920. Road-traffi.c signals on vehicles.-To enable the driver of a vehicle to detect warning sounds from vehicles &c. behind, the vehicle is provided at the rear with a sound-receiving device, preferably of bell or conical form, and the sound is led through a tube to proximity with the driver's ear. According to the Provisional Specification, the tube may have bell-mouthed members at both ends, both opening towards the rear, and any form of soundintensifying device may be fitted in the bellmouthed receptacle or tube.
Patent GB-1109547-A (GB)
Title: A process and apparatus for the manufacture of the top and bottom stop members of sliding clasp fasteners having interlocking elements made from a plastics material
IPC: A44B19/60
Filed: 1966-04-14
Abstract: 1,109,547. Moulding sliding clasp fastener elements. OPTI HOLDING A.G. 14 April, 1966 [23 April, 1965], No. 16367/66. Heading B5A. [Also in Division E2] A process for the manufacture of the top and bottom stop members 5, 6 of sliding clasp fasteners having fastener stringers with interlocking elements made from a plastics material comprises laying thermoplastic foil across one or both faces of the lengths of interlocked tapes from which the stringers are cut, then softening the interlocking elements and the foil by the application of high-frequency di-electric heating across an air gap sufficiently wide to effect virtually uniform heating of both the interlocking elements and the foil despite the greater thickness of the former, until both are soft enough to be welded and only then applying pressure to join the foil to the tapes with simultaneous shaping of the top and bottom stop members of the mutually welded foil and the material of the interlocking elements. The process is carried out by apparatus comprising a two-part die tool having die and punch parts, formed with recesses corresponding to the forms required for the stop members, one part at least of the die tool being movable towards and away from the other and the two parts of the die tool being connected to a high-frequency oscillator to act as electrodes, and control means for the relative movement between the tool parts to provide that when the high-frequency current is switched on the parts are held separated by a gap wide enough for substantially uniform heating of the material between them, and that after the high-frequency current has been switched on the movement can take place to bring the parts to a closed position with the die gap of predetermined amount to effect the welding and pressing operation. The movement of the die tool to the closed position can take place at a constant speed but it is preferred to advance the die to its closed position in a series of fixed pressing positions so that the shaping of the foil and interlocking elements takes place progressively. At the same time as the top and bottom stopmembers 5, 6 are formed to shape, cutters in the die remove material to separate the stop members. Each heating and pressing operation forms the top stop members of one fastener and the bottom stop members of the adjacent fastener and these are subsequently separated by a transverse cut through the tapes.
Patent GB-1422405-A (GB)
Title: Separation of molten magnesium from electrolytic melt
IPC: B01D35/28
Filed: 1973-04-05
Abstract: 1422405 Separating molten magnesium from electrolytic salt DOW CHEMICAL CO 5 April 1973 16381/73 Heading BID Molten magnesium from a magnesium-producing electrolytic cell and contaminated with electrolytic salt is purified by passage across a steel wire mesh floor 6, having openings of 0.84 to 2.46 mm. dia., through which the salt drains while the metal passes to outlet 12 for storage or immediate casting. The metal may pass through a downstream sieve with apertures 2.60 to 5.60 mm. dia. to remove solid particles. As shown floor 6 is part of a trough which may be adjustably inclined up to 45 degrees from horizontal. Upstream section 4 enables the heavier salt to settle to the bottom, but the whole floor of the trough could be of wire mesh. Fig. 2 (not shown) illustrates how molten mixture is delivered to the trough by a tiltable crucible running on rails, and how salt passes from trough 10 into a divided freezepan, also running on rails, wherein it solidifies into blocks for reuse. The solids-retaining sieve (31) is illustrated forming the floor of a basket above molten metal reservoir 32. Metal purified by passage across one screen 6 may be further purified by passage across further screen(s).
Patent GB-815522-A (GB)
Title: Method and means for producing constructional sheet material
IPC: B01D39/08
Filed: 1955-06-07
Abstract: 815,522. Doubly corrugated packaging boards &C. GEWISS, L. V. June 7, 1955 [June 10, 1954; July 30, 1954; May 17, 1955], No. 16383/55. Class 96. [Also in Groups VII and XXII] Sheet material for filter screens, packaging boards, &c., is provided with longitudinal folds and with transverse corrugations of zig-zag or sinuous form by a two-stage process. The material 45 is passed from a reel 44 over a curved bar 47 and between interengaging harrow members 46, 46<SP>1</SP> which form longitudinal V-shaped folds. It is then gripped by pairs of bars 48, 48<SP>1</SP> and 49, 49<SP>1</SP> which are moved towards one another so that the material 101 between them is bent and shaped between the bars 48, 49<SP>1</SP> to form transverse sharp corrugations 50 &c. Specification 815,523, [Group XXII], is referred to.
Patent GB-861618-A (GB)
Title: Improvements relating to helicopters
IPC: B64C27/04
Filed: 1959-05-13
Abstract: 861,618. Helicopters. COSTRUZIONI AERONAUTICHE GIOVANNI AGUSTA S.p.A. May 13, 1959 [March 27, 1959], No. 16459/59. Class 4. A helicopter freight compartment has a front opening below the pilots' seat, and a rear opening aligned with the front opening, at least one opening having closable flaps or doors. In the example shown, the front opening has part clam shell doors 2, and the rear opening a flap 3. An extra long load can thus be accommodated, while meeting centre of gravity requirements.