baber/WOPTO huggingface dataset:
Patent GB-193990-A (GB)
Abstract: 193,990. Snow, C. S. H. Dec. 6, 1921. Two-stroke-cycle engines.-An engine, as described in Specification 164,116 having a pump e surrounding the cylinder a and being driven by eccentrics set opposite to the crank, is supplied with air and combustible mixture in such a way that the air enters the cylinder from the pump before the mixture. On the downstroke of the pump piston f air enters through the port j and passages f<1>, e<1>, k, k', at the end of the stroke when the port e<1> is closed mixture enters the pump through the port e<2> below the air charge which enters first through the cylinder admission valve m. The mixture pipe and the pipe k<1> are warmed by contact with the cylinder.
Patent GB-1431193-A (GB)
Title: Method and apparatus for mixing foundry materials
IPC: B01F27/91
Filed: 1973-04-24
Abstract: 1431193 Mixing foundry materials FORDATH LTD 4 Oct 1973 [24 April 1973] 19442/73 Heading B1C In a method of producing a foundry mixture of sand and rapid setting binder separate sand/ binder and sand/catalyst mixtures are prepared and conveyed to a final mixing chamber 10 in which the two mixtures descend in a substantially vertical direction to a discharge aperture, the path of descent being interrupted by deflector blades 19, 21-which act to deflect portions of the material upwards against the general downwards flow. The deflector blades 19, 21-are mounted on a central rotary shaft 17, 17a which also carries mixer blades 18, 20- which are angled to direct the materials downwardly. The blades are arranged generally in groups of three there being two mixer blades e.g. 18 and one deflector blade e.g. 19 in each group, the deflector blade being in a space between and below the two mixer blades. In addition four mixer blades 21a are arranged at the lower end of the shaft. Screw-type mixer conveyor units 11 for the sand/binder and sand/catalyst mixtures rotate in opposite directions and are arranged to discharge towards the central axis of chamber 10. To prevent build-up of hardened deposits on the chamber walls the mixer and deflector blades sweep the whole internal surface and scraper blades 22 are arranged in the upper part of the chamber. A cleaning procedure for shutdown of the apparatus includes intermittent rotation of the blades coupled with air blasts directed through the chamber 10.
Patent GB-1463297-A (GB)
Title: Refractory bricks
IPC: C04B35/01
Filed: 1973-04-25
Abstract: 1463297 Refractory bricks IMPERIAL CHEMICAL INDUSTRIES Ltd 18 July 1974 [25 April 1973] 19579/73 Heading C1J A refractory brick is made by mixing a refractory material comprising dolomite or magnesite with a hydrocarbon petroleum fraction of which the melting point is not more than 100‹ C. and of which not more than 5 wt. per cent boils below 200‹ C., the mixing being carried out at a temperature equal to or above the melting point of the fraction, but not more than 100‹ C., and pressing the resultant mixture into a brick. The hydrocarbon fraction may be fuel oil or heavy ends obtained from the bottom of a fractionating column which has been used to fractionally distil olefinic, and/or aromatic hydrocarbon mixtures.
Patent GB-498893-A (GB)
Title: Improvements in or relating to steam turbine driven locomotives
IPC: B61C9/30
Filed: 1937-07-15
Abstract: 498,893. Turbine locomotives. SCHWEIZERISCHE LOKOMOTIV & MASCHINENFABRIK. July 15, 1937, No. 19614. Convention date, July 18, 1936. [Classes 79 (i) and 79 (ii)] Each driving axle of a steam turbine locomotive is driven by a separate transversely disposed turbine or group of turbines through the intermediary of a change-speed gear. In the Figure, the shaft a<1> of a turbine a carries pinions c, c<1> meshing with gears d, d<1> loose on a counter-shaft i having a pinion e meshing with a large gear f connected by means of a flexible coupling g with an axle h. The gears d, d<1> are of different size, and can be alternatively connected with the counter-shaft i by fluid pressure or electromagnetically actuated friction clutches d<2>, d<3> to allow of change in the gear ratio. Means may be provided to prevent the gear being changed except when the steam is cut off. In Fig. 2 (not shown), pinions at either end of the shaft i mesh with large gears at either end of a sleeve surrounding the axle h, and each gear is connected with a driving wheel by means of a flexible coupling, In Fig. 3 (not shown), the pinion e and gear f are disposed outside a driving wheel, and the gear f connected directly to the wheel. For reverse running, there may be an additional turbine k adapted to drive the shaft a, through a clutch k<1>, or a reverse gear may be interrelated between the turbine a and shaft a<1>. The turbines driving the several axles may be connected together in multi-stage fashion. Thus, with three driving axles, a high pressure turbine may drive one axle and exhaust into two low pressure turbines driving the other two asles.
Patent GB-401431-A (GB)
Title: Improvements relating to metal alloys
IPC: C22C9/06
Filed: 1932-07-12
Abstract: An alloy suitable for valves, bearings, and other purposes consists of 30-45 per cent. of copper, 40-55 per cent. of nickel, 2-20 per cent. of tin, and 1-20 per cent. of manganese. Small amounts of lead, zinc, and iron may be present.  The alloys may be made by melting a copper-nickel alloy with a copper-manganese alloy, the tin being added last.  The molten metal is stirred with a wooden or graphite bar, or covered with charcoal, or both.
Patent GB-168733-A (GB)
Title: Improvements in stringed instruments
IPC: G10D3/095
Filed: 1920-07-08
Abstract: 168,733. Roberts, A. J. July 8, 1920. Stringed instruments, necks for; monochords.-In a single-stringed instrument the neck is made in two or more parts detachably connected, the meeting end of each part being halved as shown at d and provided with a dowel e adapted to enter a hole f in the complementary part.
Patent GB-1360920-A (GB)
Title: Production of shaped carbon bodies
IPC: C01B31/00
Filed: 1972-04-27
Abstract: 1360920 Shaped carbon bodies SIGRI ELEKTROGRAPHIT GmbH 27 April 1972 [26 June 1971 8 July 1971] 19720/72 Heading C1A A carbon body is obtained by shaping a mixture of (1) a powdered or chip form carbon containing solids component which can be transformed into carbon by heating in an inert atmosphere without passing through a liquid or plastics phase and (2) a carbon containing liquid synthetic resin which forms a solid infusible mass under the influence of heat or catalysts, then subjecting the shaped mass to carbonization in an inert atmosphere, the solids component and liquid synthetic resin both undergoing weight losses of from 40% to 60% during the carbonization. Preferably the solids component and the resin undergo the same loss in weight. The solid may comprise cellulose and is preferably sawdust. Alternatively the solid is a ground hardened synthetic resin, e.g. a phenolformaldehyde or a furan resin. The mixture may be of a texture such that it can be spread on a support to obtain the shaped mass. The shaped mass may be first hardened at a temp. of from 100‹ to 200‹ C. and is carbonized by heating at a temp. of from 800‹ to 1000‹ C., the rise in temp. of the mass in the range from 350‹ to 600‹ C. being from 3‹ to 4‹ C./hr. If desired before carbonization the shaped mass may be coated with a film of hardenable synthetic resin which is first hardened and carbonized with the mass, the resin being of a type which forms a vitreous carbon layer on carbonization and also suffers a weight loss of 40-60%. The shaped mass may be hardened before being coated with the resin which may be a phenol-formaldehyde or a furan resin, the coated film having a thickness of not more than 1 mm. If desired the shaped body may subsequently be graphitized.
Patent GB-213495-A (GB)
Title: Building material, and process of manufacturing same
IPC: B28B1/00
Filed: 1923-08-01
Abstract: 213,495. Minache, S. Aug. 1, 1923. Compound slabs.-A building-material comprises two outer layers consisting of a mixture of magnesium chloride, water glass, and magnesium carbonate, and an intermediate layer consisting of pulverized organic waste material, magnesium chloride, and magnesium carbonate. The material may be formed as slabs and the outer layers may be coloured and have the outer faces provided with ornamentations. The materials comprising the outer layers may be in the following proportions :-magnesium chloride 2 kilograms, magnesium carbonate 6 kilograms, and water glass 10 grams; and the materials in the intermediate layer have proportions :-pulverized organic waste materials 4 kilograms, magnesium carbonate, 6 kilograms, magnesium chloride, 2 kilograms, water 4¢ litres. The materials for the outer layers are placed in a pug mill and are reduced to a pasty consistency by adding water, after which a portion for one layer is then poured into a mould. The intermediate layer and the third layer are then poured in and the mould is subjected to hydraulic pressure. The material can be employed as slabs for walls, partitions, ceilings, roofs, doors, panels, stuccos, and the like.
Patent GB-236406-A (GB)
Title: Improvements in or relating to holders for writing and like pads
IPC: B42D5/00
Filed: 1924-08-20
Abstract: 236,406. North, C. G. Aug. 20, 1924. Blotting - appliances. - A holder for writing and like pads comprises a preferably inclined base 1 of wood &c. to the lower surface of which a blotting-pad 7 may be attached. The writing-pad 2 is clamped against an overhanging projection 4 on the base by a screw 6. The device, may be used as a paper-weight.
Patent GB-370768-A (GB)
Title: Coupling system for thermionic valve circuits
IPC: H03J3/06
Filed: 1931-07-10
Abstract: 370,768. Wireless receiving apparatus. HAZELTINE CORPORATION, 15, Exchange Place, Jersey City, New Jersey, U.S.A.-(Assignees of Wheeler, H. A. ; 18, Melbourne Road, Great Neck, Long Island, New York, U.S.A.) July 10, 1931, No. 19879. Convention date, Aug. 19, 1930. [Class 40 (v).] A transformer coupling adapted for use as an input coupling or as an intervalve coupling and to give a wireless receiver a constant amplification throughout the tuning range comprises a tunable secondary circuit LC and two primary circuits in parallel one comprising a large inductance L2 resonant at a frequency slightly lower than the lowest operating frequency and the other comprising a small coil L1 in series with a condenser C1. Fig. 3 shows the application to a neutralized receiver in which the coil L1 also serves as the neutralizing winding. In a modification, Fig. 2 (not shown), applied to a screen-grid valve receiver the winding L1 is arranged adjacent winding L as shown in Fig. 4 and is open circuited at one end since the capacity between the windings forms the condenser C1. In a modified coil construction the winding L1 is interposed between coils L and L2. Specifications 273,639, 315,399, [both in Class 40 (v), Wireless signalling &c.], 358,054, [Group XXXV], and 359,890 are referred to.
Patent GB-602490-A (GB)
Title: Improvements in or relating to resilient suspension systems
IPC: B60G17/04
Filed: 1945-08-02
Abstract: 602,490. Pistons. CLEMENTS, W. A. Aug. 2, 1945, No. 19903. [Class 122 (i)] [Also in Group XXXII] A piston 28 forming part of a road-vehicle suspension device (see Group XXXII) is slidably mounted in a cylinder 22 which is connected with a compressed air reservoir 33 by a conduit 34 passing through the piston 28. The cylinder 22 carries a supply of luhricating oil into which dips the skirt 40 of the piston 28. Oil escaping past the piston 28 drains down a conically recessed upper surface 45 of the piston and passes through ducts 46 to the hollow interior of the piston-rod 29 in which is slidably mounted a hollow cylinder 42. A plunger 48, slidably carried within the cylinder 42, is secured to the upper end 49 of the pistonrod 29 and sucks oil from the ducts 46 through further ducts 47 in the cylinder 42. The oil is then pumped back into the main cylinder through a non-return valve 43.
Patent GB-1246021-A (GB)
Title: Screw extruder
IPC: B29C48/62
Filed: 1969-04-18
Abstract: 1,246,021. Screw mixer. BARMAG BARMER MASCHINENFABRIK A.G. 18 April, 1969 [16 May, 1968], No. 19933/69. Heading B1C. The screw of a screw mixer, see Fig. 3, has a perforated helical partition 12 arranged between its lands 10 in a mixing zone of the mixer, the arrangement being such that the radial distance between it and the screw core 9 and between it and the inner wall of the mixel housing 3 varies longitudinally and/or peripherally of the screw. The lands may not be integral with the screw core in the mixing zone, Figs. 5, 6 (not shown). The screw cores in the feed and mixing zones of the mixer may be separate and independently rotatable. In a modification, see Fig. 9, a central screw 22 is surrounded in the mixing zone by an outer screw 23 having a perforated helical partition of the type described arranged between its lands 24. The hand of the outer screw may be the same or opposite to that of the central screw. In a further modification, Fig. 10 (not shown), a first screw is provided with a conical extension having a perforated partition of the kind described between its lands, a mixing zone of the mixer, and a second screw is arranged to rotate within the conical extension, preferably in an opposite direction to that of the first screw. The perforations in the helical partition may be in the form of circular holes or rectangular slots, Figs. 7, 8 (not shown).
Patent GB-404344-A (GB)
Title: Improvements in refrigerating apparatus
IPC: A23L3/36
Filed: 1932-07-14
Abstract: 404,344. Cooling fish, fruit, &c. STONE, A. J., 3, Rue Taitbout, Paris. July 14, 1932, No. 19934. [Class 29.] Fish &c. to be frozen are packed into sealed containers and inserted into the compartments of a perforate drum adapted to be rotated in a bath of refrigerant liquid. The containers may be conveyed through the bath by an endless-chain conveyer. Further, the goods may be placed in cartons before being packed in the containers.
Patent GB-1219307-A (GB)
Title: Automatic aircraft cabin pressure control system
IPC: G05D16/20
Filed: 1968-04-26
Abstract: 1,219,307. Automatic pressure control. GARRETT CORP. April 26, 1968 [April 28, 1967], No.19975/68. Heading G3R. An electrical signal dependent on the pressure in an aircraft cabin is compared with a signal which is a non-linear function of an electrical signal dependent on aircraft altitude so that any difference is effective to control cabin pressure and thereby maintain it at a value which corresponds to the function of altitude. As described, an electrical signal derived from an aircraft altimeter is applied to a non-linear function generator which produces a voltage corresponding to a desired value of cabin pressure at each altitude. During normal flight, this signal is compared with a signal derived from a cabin pressure gauge so that any error is effective to adjust a cabin outflow valve and thereby restore cabin pressure to the desired value. Signals dependent on the rate of change of cabin pressure and the difference between desired and actual cabin pressure are applied to a circuit including limiting and polarity sensitive devices so that an additional signal is produced and applied to modify the adjustment of the outflow valve if necessary to prevent rate of change of cabin pressure from becoming excessive, the maximum permitted rate of decrease being greater than the maximum permitted rate of increase. During landing, when descent is above a predetermined rate and the aircraft is below a predetermined altitude, a manually set signal corresponding to the landing altitude becomes effective to determine cabin pressure, and the rate of change of cabin pressure necessary for cabin pressure to become equal to atmospheric pressure at the moment of landing is computed from measured values of altitude, rate of change of altitude and cabin pressure as well as the set in landing altitude signal. The signal so computed is applied to so increase the maximum permitted rate of increase of cabin pressure that the desired cabin pressure is attained on landing. A signal from a memory unit corresponding to the altitude at takeoff and manually set signals corresponding to the intended cruise and landing altitudes are compared with one another by discriminators so that, if the aircraft is to land at an altitude higher or lower than that of take-off, cabin pressure is either decreased or increased from take-off or is held constant until a higher altitude demands a decrease, according to conditions.
Patent GB-1394273-A (GB)
Title: Fluid flow valves
IPC: F16K11/044
Filed: 1972-04-28
Abstract: 1394273 Valves ADOLPH SAURER AG 28 April 1972 [6 May 1971] 19977/72 Heading F2V In a mixing valve for use in a heating system, comprising hot fluid inlet passage 2, cooler fluid inlet passage 3 and mixed fluid outlet passage 4, the valve 18 can be positioned to communicate either one or both of passages 2, 3 with the passage 4. The valve 18 comprises a plate portion 19 for controlling flow through aperture 14, and a sleeve portion 21 whose ends co-operate with respective seatings 15, 16 to control flow from passages 2, 3. A small flow f 1  may exist around the portion 19 when the valve is in the position shown. The valve may be such that, starting with the valve in the position shown in the upper half of the Figure, over about the first half of the movement of the valve to increase flow from passage 2, the percentage change in flow cross-section f 3  is within the range 0À40 to 0À75 times the percentage change in the position of the valve, whereafter over the remaining movement of the valve in the same direction, the range becomes 1À3 to 4 times. The valve may be such that the flow cross-section f 3  can be reduced only down to about 50% and preferably 25 to 35% of its maximum value, and the maximum value of f 2  is approximately twice the maximum value of f 3 . The seating 16 may be of multiple conical configuration. The valve may be actuated by thermomechanical or thermoelectrical means.
Patent GB-1460821-A (GB)
Title: Plastics closure cap for a container especially a bottle or the like
IPC: B65D41/48
Filed: 1974-05-07
Abstract: 1460821 Push off safety closure ALBERT OBRIST & CO 7 May 1974 [9 May 1973] 20002/74 Heading B8T A plastics closure comprises a push off member integral with the depending skirt 2 of a container engaging cap 1, and frangible means serving to indicate illicit opening of the container. The push off member consists of two walls 7 interconnected by a planar member 6, whilst struts 9 connected between walls 7 and depending skirt 2 serve as the frangible means. In alternative embodiments, Fig. 3, the frangible means consists of planar members 9<SP>1</SP> (or 9<SP>11</SP>) integral with walls 7 and depending skirt 2 with weakened lines 8<SP>1</SP> (or 811) which rupture when pressure is exerted on the push off member during removal of the closure.
Patent GB-1116713-A (GB)
Title: Heptane derivatives
IPC: C07D309/04
Filed: 1966-05-06
Abstract: A 3,7,7-trialkyl-5-hydroxyheptanol or a 2[2,2 - dialkylethyl] - 4 - alkyl - tetrahydropyran or a mixture thereof may be obtained by reducing a 3,7,7-trialkyl-5-oxo-heptanol.  The reduction may be effected by employing a solid hydrogenation catalyst or a chemical reducing agent.  The formation of the tetrahydropyran derivatives is favoured by employing a solid hydrogenation catalyst containing nickel or ruthenium while the formation of the heptanediol is favoured by employing a solid hydrogenation catalyst which contains copper and preferably also chromium, and the reduction is preferably effected at 75-200 DEG  C. at 500-5000 p.s.i.  The heptane diol derivative may be converted to the tetrahydropyran derivative by coacting the diol with an acid cyclodehydration catalyst, e.g. a mineral acid or an aromatic sulphonic acid suitably at 50-200 DEG  C. in the presence of an organic solvent which forms an azeotrope with water.  The heptane diol derivatives may be converted to the corresponding diesters by conventional means by reaction with an organic carboxylic acid or anhydride.  In specific examples the preparation of 3,7-dimethyl-1,5-octanediol and 2-isobutyl-4-methyl -tetrahydropyran is described.
Patent GB-515392-A (GB)
Title: Improvements in parachutes
IPC: B64D17/00
Filed: 1938-07-07
Abstract: 515,392. Parachutes; knitted fabrics. FERRARI, A. July 7, 1938, No. 20111. [Class 4] [Also in Group VIII] A parachute canopy is formed of trapezoidal panels cut on the bias, so as to be elastic dn the direction of their length, from a piece of knitted warp fabric, preferably silk, having glossy and mat surfaces, alternate panels 3, 3', Fig. 3, being arranged with their glossy and mat surfaces to the outside. The large and small bases 4, 5 of the panels are slightly biassed and form the peripheral edge and the edge of the . air vent and the sides 6, 7 of each panel are respectively heavily and slightly biassed. In assembly a side 6 and a side 7 of adjacent panels are joined by elastic seams which are reinforced by pieces of similar fabric. The leading edge is reinforced by braids which are twisted to form rings for attachment of the rigging lines. The edge of the air vent, Fig. 12, is reinforced by upper and lower bands 16 of natural silk and also by braids 17 one of which receives the end of the pilot parachute cable and the other the end of a cable attached to the ring of the rigging lines which is connected to the parachutist's harness. The latter cable limits the stretch of the canopy. The fabric is made on a 90 inch warp knitting-frame. gauge 26, with three guide bars from threads of, 13/15 natural raw silk with a twist of 350 turns per metre and assembled with two ends for the guide bars No. 1 and No. 3 and with three ends for the bar No, 2 ; each bar comprising about 2,320 threads. The fabric is woven to the pattern shown in Fig. 4, bars Nos. 1 and. 2 being moved lengthwise while bar No. 3 moves according to ordinary meshing pattern to. connect the threads of the other bars. The contractions are 1, 0-9 and 0-5 metres for. bars Nos. 2, 1 and 3 respectively and the loops. are adjusted for 30 -32 per cm. The fabric is scoured with pure soap in a 1 per cent. bath at a temperature of about 50-60‹ C. for about 12 to 15 hours and, is then dressed while keeping it at its raw width on a tentering machine without tension.