baber/WOPTO huggingface dataset:
Patent GB-699134-A (GB)
Title: Improvements relating to the separation according to specific gravity of mixtures ofparticles differing in specific gravity and grain size
IPC: B03B5/62
Filed: 1951-10-11
Abstract: 699,134. Upward current classifiers. MAATSCHAPPIJ VOOR KOLENBEWERKING STAMICARBON N.V. Oct. 11, 1951 [Oct. 12, 1950], No. 23721/51. Class 82(ii) An upward current separator, for separating according to specific gravity materials differing in grain size and specific gravity, comprises two or more risers having their overflows at a common level and communicating at their lower ends with a common space for the separating liquid and means for keeping the separating liquid in the risers at the same level and for adjusting this level, the apparatus being so constructed that, at a given common, level of liquid in the risers, the overflow of liquid therefrom produces different rates of upward current in these risers and any change in the common liquid level causes the said upward currents to alter to different extents proportional to the current rates before the change. In the form shown, risers 3, 4, 5 are fed with material sized into three fractions by the superimposed sieves 2. The risers are connected to a common chamber 7 fitted with a bucket elevator 15 for the heavy material and have, at their upper ends, overflows 6, 7, 8 respectively which are of differing widths but are at the same level. The liquid overflowed from the risers is returned, via the pipes 13, 11, and a pump 10 to the chamber 9. The three sized fractions from the sieve 2 are thus each fed into a riser in which the correct rate of upward current flow for the specific gravity separation of that fraction is obtained by adjustment of the width of the individual overflows 6, 7, 8 by means of the slides 17. In addition to, or instead of, overflows of differing width, the risers may be of differing cross-sectional area. The actual specific gravity of separation may be adjusted by altering the common liquid level in the risers by raising or lowering a secondary overflow 16 connected to the pipe 11. Specification 699,132 is referred to.
Patent GB-947873-A (GB)
Title: An annular combustion chamber for gas turbines
IPC: F23R3/38
Filed: 1960-07-07
Abstract: 947,873. Gas turbine plant; gas turbine combustion chambers. BMW TRIEBWERKBAU G.m.b.H. July 7, 1960 [Oct. 7, 1959], No. 23778/60. Headings F1G and F1L. A gas turbine engine comprises a radial-flow compressor 1 and an inward radial-flow turbine 2 the rotors of which are disposed back to back with an annular combustion chamber 15 having a rotary fuel distributer 3 disposed therebetween. The two rotors are mounted on a shaft 4. A first frusto-conical plate member 7 is supported adjacent the rear face of the compressor impeller 1 from the casing portion 5 by means of the diffuser 6 and a second frustoconical plate member 9 is supported adjacent the rear face of the turbine rotor 2 from the casing portion 12 by means of the turbine nozzles 11. The plate members 7, 9, carry at their inner peripheries rings 8 for example of graphite which co-operate with seal portions 10 formed on the rotary fuel distributor 3. The radially disposed walls 17, 18, of the annular combustion chamber are supported from the plate members 7, 9, by resilient supports 13, 14. Air enters the primary combustion section of the combustion chamber through inlets 16 at both sides of the fuel distributer. The combustion chamber is completed by a wall 20 which forms a secondary combustion and flow reversing section 19 from which gases discharge through the inlet nozzles 11 to act on the turbine rotor.
Patent GB-168241-A (GB)
Title: Improvements in and relating to mechanism for manipulating the controlling elements of aircraft
IPC: B64C13/02
Filed: 1920-08-14
Abstract: 168,241. Booth, H., Copley, J. W., and Commercial Aeroplane Wing Syndicate, Ltd. Aug. 14, 1920. Links and levers.-A control lever for aircraft has two parallel floating pivots 4, either of which can operate on a pivot while the other imparts the desired motion to the controls through a bar- 7. Plates 3 fixed to the machine have slots 6 with abutments 5 for engagement with the pivots 4. A spring may operate between the lever 1 and the supporting frame to keep one of the pins 4 on its abutment 5 or to restore the lever to its neutral position. Further modifications show :- (1) a single plate 3 straddled by a forked lever 1, (2) pins 4 carried by the plates 3 and coacting with abutments on the arms 2 of the lever 1.
Patent GB-1370044-A (GB)
Title: Apparatus for dispensing predetermined quantities of material into  containers
IPC: G01G13/24
Filed: 1972-05-20
Abstract: 1370044 Automatic feed weighing AGRICULTURAL UTILITIES (MACHINERY) Ltd 19 Jan 1973 [20 May 1972] 23863/72 Heading G1W An apparatus for dispensing predetermined quantities of a material comprises a chute 11 for feeding material alternately into two containers 19, and means for automatically directing the chute from one container to the other when the predetermined quantity has been reached in the one container. Chute 11 is mounted on rotatable shaft 35 so as to be able to direct material to opening 14 or opening 15, the openings communicating with respective chutes 17, 18 to which containers such as sacks 19 are connected. A pair of weighbeams 20, 21 each has a sack supporting end and a counterweight 24 supporting end, the beams being pivoted at 22. Each weighbeam is connected by a rod 25 or 26, a sliding eyelet 31 or 32 and a pushrod 27 or 28 having a stop 29 or 30 to one end of a pivoted lever 33. Pivoted lever 33 is connected by bevel gears to shaft 35 so that oscillation of lever 33 about axis 34 moves chute 11 between position on which it registers with openings 14 and 15 respectively. In use, if chute 11 is initially aligned with opening 14, material is fed into the corresponding sack 19. As the sack 19 approaches the pre-set weight determined by counterweight 24, the weighbeam 20 tilts towards the horizontal position and thus causes the chute 11 to be progressively moved out of alignment with opening 14 into alignment with opening 15. The apparatus may be used for weighing root crops such as potatoes, grain, fertilisers, sugar and fruit into sacks or drums. The invention may also be applied to dispensing liquids such as oil or molasses with appropriate sealing.
Patent GB-997627-A (GB)
Title: Improvements in or relating to semi-conducting materials
IPC: H01L35/18
Filed: 1963-06-14
Abstract: An n-type semi-conductor material consists of Bi2Te3 80-90% mole, Bi2Se3 2-15% mole As2Se3 2-5% mole and a halogen (e.g. Cl) or a metal halide (e.g. CuBr) as the doping impurity which is preferably present in an amount of 0.01-0.1% by weight.  The materials may be made by vacuum melting the ingredients at 800 DEG  C. in a quartz tube and then pulling a rod of the desired material from the melt at a speed of 0.06 cm./hour at a temperature of 750 DEG  C. Alternatively a zone melting process may be used.ALSO:An n-type semi-conductor material consists to  .Bi2Te3.80-90%.mole .Bi2Se3.2-15%.mole .As2Se3.2-5%.mole and a halogen (e.g. Cl) or a metal halide (e.g. CuBr) as the doping impurity, which is preferably present in an amount of 0.01-0.1% by weight.  The materials may be made by vacuum melting the ingredients at 800 DEG C. in a quartz tube and then pulling a rod of the desired material from the melt at a speed of 0.06 cm./hour at a temperature of 750 DEG C. Alternatively a zone melting process may be used.
Patent GB-600368-A (GB)
Title: Improvements in or relating to building bricks or blocks and to walls utilizing same
IPC: E04B2/02
Filed: 1946-09-11
Abstract: 600,368. Building - blocks. MORGAN, E. G. Sept. 11, 1946, No. 23882/45. [Class 87(i)] An apertured building-block comprises outer and inner portions 1, 1a having on their upper and lower faces respectively longitudinal projections 2 and corresponding recesses 3, and spaced apart by portions 4, 5 of which one portion 4 projects beyond the end of the block to form a tongue while the other 5 is 'spaced from the end of the block to form a corresponding groove. At least a part 4b, 5b of the upper surfaces and the whole of the lower surfaces 4c (not shown), 5c of the portions 4, 5 are. on a level with the tops of the projections 2 and the lower face 1b of the block respectively to prevent longitudinal movement of the blocks when laid in staggered bond. Mortar or drainage grooves 8 and holes 7 may be provided and the outer face 1d may be inclined, a drip groove 1c being provided. A similar L-shaped block is provided for corners. Half blocks for door and window openings and wall base blocks with drainage gutters are also provided. Specification 600,399 is referred to.
Patent GB-872736-A (GB)
Title: Improvements in and relating to cutter loader mining machines
Inventor: DAVIES MAYNARD JOHN
IPC: E21C27/02
Filed: 1956-08-02
Abstract: 872,736. Mineral-mining machines. COAL INDUSTRY (PATENTS) Ltd. July 30, 1957 [Aug. 2, 1956; Oct. 15, 1956; Dec. 4, 1956], Nos. 23885/56, 31361/56 and 37028/56. Class 68(1). Extending laterally of the body structure 7 of a mineral-mining, cutter loader that can move along a conveyer 6, is a jib 3 having at the outer end a pair of vertical cutter drums 1, 2 that can be rotated in either direction and are positioned one above and one below the jib so that the mineral can be mined over the full height of the seam. Preferably two such pairs of cutter drums are mounted at either side of the outer end of the jib about which may circulate an endless cutter chain. The jib may be so shaped that pre-cutting of the face may occur before it is attacked by the, or the leading, of the pair of cutter drums. Cutter bars 21 may also be mounted on the machine for pre-cutting of the face. Six preferred embodiments are described in detail. Specification 842,614 is referred to.
Patent GB-872888-A (GB)
Title: Improvements in and relating to the insulation of flat roofs or similar structural bodies
IPC: E04D13/17
Filed: 1957-07-29
Abstract: 872,888. Laminates. WALDMANN, F., [trading as ROLAND DACHPAPPENFABRIK F. WALDMANN & CO.]. July 29, 1957 [July 28, 1956], No. 23889/57. Class 140. [Also in Group X] A moisture-proof and heat-insulating roof covering comprises a layer of right-angle corrugated roofing cardboard secured at its lower crests by adhesive to the roof surface, a flat layer of pressed peat or mineral wool slabs laid edge to edge, overlying the cardboard and adhered thereto, and a smooth layer or layers of roofing paper stuck over the slabs. Prefabricated units of the covering of single slab size may be applied to the roof, or the layers may be stuck successively thereto. The corrugations may define open moisture-discharge channels both above and below the cardboard, or the upper channels may be closed at their ends by adhesive paste to form insulating air chambers.
Patent GB-284561-A (GB)
Title: Improvements in and relating to supporting devices for liquid fuel burners
IPC: F23D11/00
Filed: 1926-10-25
Abstract: 284,561. Ainscow, J. W. H. Oct. 25, 1926. S p r a y burners; mounting. - A liquidfuel burner has a reduced forward end 41 by which it is mounted in a central aperture 44 in a spider 43 which is slidable on arms 46 projecting rearwardly from an air cone 48 secured to the furnace mouth. The burner may be secured to the spider by a bellmouthed discharge member 40.
Patent GB-815646-A (GB)
Title: Improvements in and relating to humidity sensitive devices
IPC: G01N27/12
Filed: 1955-08-19
Abstract: 815,646. Measuring humidity electrically. GENERAL ELECTRIC CO. Aug. 19, 1955 [Aug. 20,1954], No. 24023/55. Class 40 (1). A humidity-responsive transducer comprises a porous ceramic (e.g. low-fired alumina) core 1 impregnated with a hygroscopic salt such as magnesium or lithium chloride or sodium dichromate or with a mixture, and a pair of electrodes wound in grooves on its surface, one of the electrodes being connected at its ends to pins 5, 7 to enable it to act as a heating coil and the other being connected at both ends to pin 9. In one arrangement, Fig. 2 (not shown), the heater is connected across the mains via an adjustable resistor and the other electrode is connected to one-main via. an ammeter. In another arrangement. Fig. 3 (not shown), the ammeter is replaced by a relay which, on operating, increases the heater current. The drying of the core then reduces the relay current to the point at which it falls back and the cycle is repeated. In another arrangement, Fig. 4 (not shown), the relay modifies the resistance in its own circuit to reduce chattering. As shown (Fig. 5), a contact k3 of a relay K3 normally shunts ammeter 36 and its limiting resistor. If the instrument is excessively wet, the potential of the point 15 is such that the cold cathode tube 39 does not fire. As the instrument dries with the flow of excessive measuring current, the potential of point 15 rises to a point at which the tube can fire and relay K3 then cuts the ammeter into the measuring circuit.
Patent GB-820742-A (GB)
Title: Improvements in temperature responsive electric switches
Inventor: MASON GEOFFREY ALFRED WILLIAM
IPC: H01H37/46
Filed: 1956-08-04
Abstract: 820,742. Temperature-responsive actuating-elements. WILKINSON SWORD Ltd. Aug. 1, 1957 [Aug. 4, 1956], No. 24091/56. Class 64(2) [Also in Group XXXVII] Switch contacts (see Group XXXVII) are operated by an insulating button 16 carried on a metallic temperature-sensitive device comprising three bowed strips 11, 12, 13 of low expansion and a straight strip 14 of high expansion secured by projection welding, the strips 12, 13 and 14 being joined at their ends and the lowest strip 11 being' joined by its two ends to a base 10b of high expansion. The button 16 moves closer to the base as temperature increases.
Patent GB-296028-A (GB)
Title: Improvements in scraping machines with stationary scraper
IPC: B27C1/00
Filed: 1928-08-22
Abstract: 296,028. Kirchner & Co. Akt.-Ges- Aug. 23, 1927, [Convention date]. Planing.-The scraping-knife 4 of a fixed-knife scraping-machine is secured to a support 7 which is adjusted vertically by a hand-operated roller 11 bearing on the bottom bevelled edge of the support. The bearings of the roller are vertically adjusted by means of a screw 16. The vertical edges of the support are also bevelled, as shown in Fig. 2, and the support is held in place by a pivoted arm 10 with a screw-clamp 18. When this arm is swung aside, the support can be pulled out laterally by a handle 21.
Patent GB-532229-A (GB)
Title: Thread-controlling mechanism for overedge sewing machines
IPC: D05B1/20
Filed: 1939-08-23
Abstract: 532,229. Sewing machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Aug. 23, 1939, No. 24239. [Class 112] An over'edge seam is formed by means of a curved eyed needle 8, a 'threaded under looper 7 and a threaded edge loop'er 9. The looper 7, Fig. 9, is carried by a shaft 15 directly operated from a crank on the main shaft. The looper 9 is pivotally mounted, at 20 on a slide 21 and is also pivotally connected at 23 to an arm 24 on a shaft 25 actuated by a second crank. The thread u of the under looper passes from a fixed eye 45 to eyes 33, 34, on a take-up arm 32 on the shaft 15, and an intervening eye 44 on the arm 24. The thread o of the edge looper passes through an eye 40, on a plate pivoted about the shaft 25 and secured by a screw 41, and the eye 33. The needle thread t, Fig. 5, passes through an eye 30 in an adjustable plate 29 and the thread is deflected, to a variable degree, when the needle is in the work by the needle carrier 10, which is grooved at 31.
Patent GB-259236-A (GB)
Title: Method of manufacturing ceramic materials, building elements and the like, from mud
IPC: C04B33/00
Filed: 1926-10-01
Abstract: 259,236. Loessin, A. Oct. 1, 1925, [Convention date]. Making bricks; pottery materials; enamels. - In making ceramic materials, building elements, and the like, mud from dredgers is allowed to settle for a considerable time in tanks, or partly dried by centrifugal appliances. The settled mud, which contains about forty-five per cent of water, is kneaded with two or three per cent Glauber's salt or like substance before being moulded and burnt. The burning is carried out first for one day at a temperature of 400 to 450‹ C. and then re-burning at 980‹ C. is effected after an interval for cooling. Ten to twenty per cent of sand is added to the mixture to produce articles of varying degrees of greater hardness than is possible with the mud and salt alone. For paving materials the mixture is burnt for one dav at a temperature of 1300‹ C. It is stated that the material obtained can be ground and used as an enamel powder. For casting objects, the mixture is maintained at a temperature of 1350 to 1400‹ C. for two days.
Patent GB-708706-A (GB)
Title: Improvements in and relating to die heads for pipe threading
IPC: B23G1/22
Filed: 1952-09-30
Abstract: 708,706. Screwing. UNION CARBIDE & CARBON CORPORATION. Sept. 30, 1952 [Nov. 20, 1951], No. 24397/52. Class 83 (3) A die-head for screwing pipes, particularly carbon or graphite pipes, comprises a body 1 clamped in the end of the pipe P by a resilient sleeve 5 expanded by a pull rod 3 and a die-head 7 rotatable on the body by a handle 9 and having chasers 10 with blades 11 for turning down the pipe, screw-cutting teeth 12 and guiding teeth 13 engaging a lead screw 8 on the body. The cutting teeth are arranged helically at decreasing pitch diameters and, as shown, are in axially-spaced pairs so that the first tooth 12 of one chaser makes a shallow cut which is deepened successively by the first teeth of the following chasers and then by the second teeth of the same chasers until full depth is reached. The three teeth 12 that enter the thread last are at full pitch diameter so that the last two do not cut when the die-head is new but come into use when the pitch diameter of preceding teeth has been increased by sharpening. In a modification, the screw-cutting teeth and the sizing blades are mounted independently of each other in grooves in the front face of the die-head and guiding teeth at the rear end of the die-head engage a lead screw on the body. A stop 17 limits the forward movement of the die-head but may be removed so that the die-head may move off the body and continue screwing the pipe to any required point. The blades 11 and cutting teeth 12 may be of sintered carbide brazed to the chasers.
Patent GB-298348-A (GB)
Title: Improvements relating to brakes or steadying devices for ships' rudders
IPC: B63H25/52
Filed: 1927-09-16
Abstract: 298,348. Jacksons' Patents Co., Ltd., and Jackson, C. A. Sept. 16, 1927. Steering - gear. - A brake or steadying device for a ship's rudder comprising a length of wire anchored at its ends and passed around a sheave normally free to revolve about a pin on the rudder quadrant is arranged so that the two portions of the steadying wire are in alignment irrespective of the position of the quadrant. For this purpose either the end anchorages are slidable in the fore and aft directions or the sheave member may be slidably mounted on the quadrant. The steadying wire rope a is secured at one end b to a thimble on the rod c. The rod c is mounted in a bracket d so as to be free to slide therein. The other end of the rope is similarly mounted but a turn-buckle j is inserted. The rope is adapted to pass around segmental blocks k which are tongue supported in wooden blocks m normally freely mounted on a sheave n. The segmental blocks are retained in place by a lip n<2> and by a flange on an upper cover. The sheave n itself is secured to quadrant q by brackets p and central distance block. The dotted lines show the steadying wire a in the position when the quadrant was hard over. In a modification the wooden segments are formed of wedge section and the cover plate is correspondingly constructed.
Patent GB-149547-A (GB)
Title: Improvements in or relating to runners for centrifugal pumps and the like
IPC: F04D29/22
Filed: 1919-10-08
Abstract: 149,547. Royston, E. R., (Taylor-Wharton Iron & Steel Co.). Oct. 8, 1919. Balancing moving parts; impeller blades; materials used in construction.-The vanes 6 of a pump runner consisting of a manganese-steel casing are provided on the back and near their outer ends with integral balancing ribs 7 with clearance spaces 8. The ribs 7 are parallel to the axis of the pump and extend partly across the vanes 6, being so spaced from the surrounding metal parts so as to be easily accessible for trimming.
Patent GB-1003615-A (GB)
Title: Improvements in or relating to tanks for storing and transporting liquefied gas at very low temperature
IPC: F17C3/02
Filed: 1963-06-20
Abstract: 1,003,615. Storing liquefied gases. GAZ DE FRANCE. June 20, 1963 [June 12, 1962], No. 24589/63. Heading F4P. A tank for storing and transporting liquefied gas comprises an inner casing 20 disposed within and spaced from an outer compartment 10 by the interposition of solid insulating blocks 30 adapted to transmit to the walls of the outer compartment the pressure exerted on the inner casing 20 while co-operating in guiding the inner casing during its expansion and contraction movements, and the remaining space between the inner casing and outer compartment being filled with granulated or powdered insulating material. The inner casing 20 is guided by T-sectioned elements 70, Fig. 8, secured to the outer faces of the inner casing and co-operating with T-sectioned grooves 71 formed in the blocks. Each of the faces of the inner casing are provided with four T-sectioned elements 70 arranged at 90 degrees to each other as shown in Fig. 2. In an alternative arrangement the inner casing is guided by pairs of chains 81, 82, Fig. 9, one of the ends of each chain being secured to the outer 'compartment at 84 and 85 and the other ends to a common point 83 on the inner casing. The insulating blocks 30 may be of cubic, prismatic or lozengesectioned, preferably arranged in staggered rows in order to avoid the ramming of the insulating powder. The insulating blocks 30 are secured to the walls of the outer compartment by glueing or by means of angle members secured to the compartment (Figs. 3 and 4 not shown), or alternatively may be secured at regular intervals on steel ropes (Fig. 7, not shown), the faces of the blocks which contact the inner casing being coated with a layer of a material having a low coefficient of friction such as hardwood to facilitate sliding therebetween. In another embodiment (Fig. 14, not shown), the insulating blocks are disposed in vertical row and the inner casing has alternate flat and curved portions. The inner casing may be strengthened by stiffeners 110-114 arranged as shown in Fig. 15 (or Fig. 17, not shown), welded or strapped to the outer or inner faces of the casing. Alternatively stiffeners may be nailed or glued to boards of impregnated wood disposed on the outer face of the inner casing, or to the insulating blocks. A further embodiment (Figs. 19 and 20, not shown), describes an arrangement wherein the solid insulating blocks are replaced by a grid or network of hardwood beams built up of parallel rows of beams crossed by parallel rows of beams in other planes.