baber/WOPTO huggingface dataset:
Patent GB-1044196-A (GB)
Title: Extraction of alumina from bauxite
IPC: C01F7/062
Filed: 1964-06-29
Abstract: Ores containing alumina in the monohydrated forms and silica partly in the form of quartz and partly combined with alumina, are digested with alkali liquor under pressure and at elevated temperature for 10 to 20 minutes, a period of time limited substantially to that which is sufficient to dissolve the available alumina therefrom and to dissolve and re-precipitate substantially only readily reactive silica.  The ore may be treated at 220-250 DEG  C., preferably about 240 DEG  C., using alkali concentrations of 80 to 140 g. per litre of Na2O from free caustic soda and soda combined as sodium aluminate. Alkali losses may be reduced by an amount equivalent to 30% of the quartz in the ore, and 90% or more of available alumina may be extracted. Suitably the ratio of alumina to free soda in the pregnant extraction liquor is maintained within the range 1.06 to 1.12.
Patent GB-383949-A (GB)
Title: Improvements in muffle furnaces
IPC: F23D99/00
Filed: 1932-09-27
Abstract: 383,949. Muffle furnaces. GIBBONS BROS., Ltd. and BRIDGFORD, T. E., Dibdale Works, Dudley, Worcestershire. Sept. 27, 1932, No. 26777. [Classes 51 (i) and 51 (ii).] In a muffle furnace of the oven type heated by longitudinal combustion chambers having hollow walls through which the oven atmosphere circulates, the inner and outer sides 2, 6 of the hollow walls are formed as separate members and are of different materials, the former being composed, for example, of silicon carbide and the latter of aluminous or silicious fireclay. The outer wall members 6 are constituted by channel-shaped bricks which fit between ribs 3 on the inner members 2, there being interposed fireclay filling pieces 8 which may be formed of different thicknesses so that the conductivity of the inner wall may be varied as desired. The inner members 2 are built up of slabs having interengaging ribs 4 in which air circulation channels 5 are formed. The base 14 of the combustion chamber is supported on spaced bricks 16 and is formed with apertures 15 which provide communication between the circulation channels in the hollow side walls and the spaces between the bricks 16. The upper end of the combustion chamber is closed by two sets of sealing tiles 12, 13, the former being supported on ribs 11 formed integral with the inner wall members 2. Specification 384,798 is referred to.
Patent GB-917687-A (GB)
Title: Improvements in or relating to fluid control valves
Inventor: BROWN HARRY
IPC: F16K5/16
Filed: 1959-08-06
Abstract: 917,687. Valves. PEGLERS Ltd. Aug. 6, 1959, No. 26943/59. Addition to 899,872. Class 135. The valve according to the parent Specification is modified in that the sleeve 18 is secured by a clamping ring 30 fixed to a radial flange 31 of the valve body, this ring bearing graduations 35 corresponding with the pitch of the splines 26 between the sleeve and body, and the actuating handle 24 has a pointer 34 cooperating with the graduations to facilitate adjustment for wear down of the plug. A modified gland 27 is also provided.
Patent GB-300754-A (GB)
Title: Improvements relating to fluid operated brakes for tramway and other rolling stock
IPC: B60T13/36
Filed: 1927-10-11
Abstract: 300,754. Electro-Mechanical Brake Co., Ltd., Cadbury, G. N., and Smith, S. Oct. 11, 1927. Fluid-pressure.-A fluid operated brake for tramway and other rolling stock is provided with an automatic valve which when a predetermined pressure on the wheel brakes is exceeded diverts pressure. fluid to the track brakes and releases the pressure on the wheel brakes. The automatic valve comprises, a pair of large pistons j, k in a cylinder h and a small piston l in a cylinder i. The pistons form a single moving element which is held by a spring u in the position shown so that when the manual control valve is operated to open a valve d and to apply the brakes, pressure fluid is admitted from a reservoir a and a pipe c to a pipe 9, and the piston j, a pipe m and the space between the pistons j, k, pipe o, and the wheel brake cylinder f. Fluid is also admitted from the pipe c by pipes v, x to the cylinder i and acts on one side of the piston l. If the fluid pressure which acts on the piston j exceeds a certain amount the pistons move to their opposite limit, and close the wheel brake supply pipe m open the wheel brake cylinder pipe o to an exhaust port and admit pressure fluid to a pipe p leading to the track brake cylinder g. The supply to the cylinder is also cut off and this cylinder is exhausted through a passages y the space between the cylinders j, k and the outlet q. To release either brake the manual control valve is operated to close the valve d and open a valve e and the pistons are returned to initial position by the spring u, the wheel brake cylinder is exhausted through the valve e and the track brake cylinder through a passage z, the space between the pistons k, l and a passage r. By opening the valve d immediately to full open position the pistons are moved to apply the track brakes only; or this may be done by means of an emergency valve w adapted to connect the pipe v to the pipe q and the pipe x to an exhaust outlet 2. The brakes may be exhausted by means of a passage 3. The pipe p is connected to an automatic valve at each end of the vehicle and is therefore provided with a cylinder s containing a floating-piston t which when one automatic valve acts closes the pipe leading to the uther valve. In a modification the cylinder : i is provided with a spring-controlled release valve adapted to act above a certain pressure and thus allow the automatic valve to operate more readily and the track brakes can be operated at a lower fluid pressure than normally. Also the pipe x is dispensed with and a passage leading from the cylinder i to the space between the pistons j, k is provided.
Patent GB-482750-A (GB)
Title: Improvements relating to compressors, blowers and receivers for fluid pressure
IPC: F01C1/348
Filed: 1936-10-05
Abstract: 482,750. Rotary engines. STIEGER, H. J. Oct. 5, 1936, Nos. 26994/36 and 26670/37. [Class 110 (ii)] An outer rotor with end walls 7 and connecting segments 8 revolves concentrically within the casing 1, and an inner rotor 9 is fixed to a shaft 10 with axis 11. The rotor 7 is carried by bearings 13, and the rotor 9 by bearings 14<1>. The outer rotor is driven through the action of vanes 15 which slide in the inner rotor, and have flats 16 which press on flats 8A of segments 8. An arcuate section 5A-5B of the casing bore has a centre 6. The portion 21A, 22B of the abutment 21 is struck from the centre 11, and the portion 22B-22A from the centre 6. The vanes may extend for the whole axial length of the rotor, or they may have their edges stepped. Push-rods 17 between a pair of vanes pass through holes in the shaft 10. The spaces 14A may form pumping spaces for lubricant, and hollows 9A may contain cooling fluid. Oil may enter from a duct 18 to lubricate the push-rods 17. A cooling chamber 4A is provided. The intake 2 diminishes in cross-section in the direction of rotation according to the increase in volume of the pressure space. A delivery 3 may be similarly shaped. Pressure lubrication is preferably supplied at 21. Fluid pressure may be used to force the vanes inwards or outwards. Flats parallel to the flats 8A may be formed in the walls 7, upon which the inner ends of the vanes slide.
Patent GB-871920-A (GB)
Title: Improved method of removing filler materials
Inventor: HALL DOUGLAS WILSON
IPC: C25F3/02
Filed: 1957-08-27
Abstract: 871,920. Removing metal electrolytically. ROLLS-ROYCE Ltd. Aug. 27, 1958 [Aug. 27, 1957], No. 27038/57. Drawings to Specification. Class 41. Internal-combustion turbine blades, of nickel base alloy, have interior passages in which mild steel is used as a filler during extrusion. The filler is removed by electrolysis. The blade is immersed in nitric acid with a graphite anode enclosed in a porous pot. The graphite and blade are connected respectively to the positive and negative poles of a battery. Specification 833,522 is referred to.
Patent GB-852682-A (GB)
Title: Improvements relating to nuclear reactors
Inventor: SMITH DEREK RANDALL
IPC: G21C3/08
Filed: 1957-08-28
Abstract: 852,682. Nuclear fuel elements. A. E. I.- J. THOMPSON NUCLEAR ENERGY CO. Ltd. Aug. 18, 1958 [Aug. 28, 1957], No. 27115/57. Class 39(4). A nuclear fuel element comprises a cylindrical rod of fuel encased in canning which has external helical fins, the channels between the fins being interrupted to promote turbulence in the flow of coolant over the element. The turbulators may be continuous strips extending along the element and completely or partly blocking the channels, or separate plates or studs, not necessarily in line, may be used for each channel.
Patent GB-184096-A (GB)
Title: Improvements in connection with perambulators and baby carriages
IPC: B62B9/24
Filed: 1921-10-13
Abstract: 184,096. Sparke, R., and Brown, J. Oct. 13, 1921. Back struts.- To prevent perambulators from tilting backwards or running away when unattended, a safety member or frame A is pivoted to lugs secured to the underframe e and normally held in an out-of-use position under the carriage bv one or more springs b, but may be moved by hand or foot against the spring action into its effective position in which it inclines downwardly and rearwardly from its pivots and rests on the ground supporting the greater portion of the weight of the carriage with the rear wheels off the ground. As shown, the frame A comprises a pair of side members pivoted to lugs which are secured in suitable positions on the undercarriage members e. The side members are connected by an adjustable transverse member a.
Patent GB-488548-A (GB)
Title: Improved photographic sensitive material for colour photography
IPC: G03C7/30
Filed: 1936-10-07
Abstract: 488,548. Sensitive material for colour photography. GROVES. W. W. (I. G. Farbenindustrie Akt.-Ges.) Oct. 7. 1936, No. 27241. [Class 98 (ii)] A multi-layer material comprises next to the support a red sensitive silver halide emulsion layer containing a colour former which is fast to diffusion and yields a blue image by colour development, above this a green sensitive layer containing a colour former which is fast to diffusion and yields a red image, and above this a blue sensitive layer containing a colour former which is fast to diffusion and yields a yellow image. The colour formers may be those described in Specifications 458,400, 465,823, 479,838, 483,000, and 484,698. Suitable sensitizers are described in Specifications 480,778 and 483,548. Yellow and red filter gelatin layers may be included between the blue sensitive, green sensitive and red sensitive layers respectively. Alternatively, the yellow filter dyestuff may be incorporated wholly or in part in the blue sensitive layer. If the red sensitizer has a suitable gap in the green part of the sensitivity range, the red filter may be omitted. The material may be used in the negative-positive process and may be used for producing copies from any original. The support may be opaque and the pictures viewed by reflection. Specifications 376,795, 468,946, and 471,520 also are referred to.
Patent GB-764085-A (GB)
Title: Collapsible trolley
IPC: B62B1/04
Filed: 1950-11-07
Abstract: 764,085. Collapsible vehicles. BAUMANN, K. Nov. 7, 1951 [Nov. 1, 1950], No. 27245/50. Class 108(1). A cross-member 1 secured to a vehicle which may be a golf-bag carrier has pivoted to it at 2 the inner parts 4 of wheelcarrying arms 8. Rotation of the parts 4 about their pivots 2 is effected by links 6 operated by the cross-member 3 and extensions 11 on the links 6 engage spheres 10 secured to the wheel arms 8 to rotate the arms 8 about their pivots 7 to bring the wheels 9 into an operative position. The inner parts 4 may be provided with toothed segments which co-operate with a common idler wheel so that simultaneous rotation of the parts 4 is effected. A handle 13 may be provided to carry the trolley.
Patent GB-463647-A (GB)
Title: Process for the manufacture of complex compounds of 1.3-dimethylxanthine
IPC: C07D473/08
Filed: 1935-10-03
Abstract: Double compounds of theophylline with water-soluble salts of m-hydroxybenzoic acid are prepared by interaction of the components in the presence of a solvent such as water.  The products possess therapeutic properties.  The process may be effected by (1) reacting 1 mol. of theophylline with 2 mols. of an alkali metal salt or 1 mol. of the neutral magnesium salt of m-hydroxybenzoic acid; (2) treating 1 mol. of theophylline with 2 mols. of m-hydroxybenzoic acid and adding sufficient alkali metal or magnesium hydroxide to give a neutral product; (3) reacting 1 mol. of an alkali metal compound of theophylline with 1 mol. of an alkali metal salt of m-hydroxybenzoic acid and 1 mol. of the free acid, or with 2 mols. of an alkali metal salt of the acid with the addition of one equivalent of a stronger acid.  An example is given.
Patent GB-719057-A (GB)
Title: Improvements in or relating to portable fire escape ladders
IPC: E06C1/56
Filed: 1950-11-09
Abstract: 719,057. Ladders. BOOKER, J. P. Nov. 9, 1951 [Nov. 9, 1950], No. 27449/50. Class 20 (2) A portable fire escape comprises a flexible ladder 2 supported on a frame 1 resting on a window sill and having telescopic extensions 10 engaging the wall inside the window. The rungs are spaced from the wall by struts 5. The frame 1 is also secured by a strap 13 to a hook in the building. Each flexible ladder side comprises two webbing straps between which the rungs are secured by split pins and the upper ends are diverged laterally and secured separately side by side to the frame in order to steady the ladder.
Patent GB-247646-A (GB)
Title: Coke oven with vertical heating flues
IPC: C10B21/10
Filed: 1924-11-17
Abstract: 247,646. ChomÚ, P., and Defossez, L. Nov. 17, 1924. Coke ovens.-In a vertically-flued coke oven of the kind in which during one heating-period the gases flow upwards in all the flues 16 of a heating- wall, and in the succeeding period flow downwards, a pair of parallel flues 9, 9<a> is provided at the top of each heating-wall for the supply of air, or air and gas, and for the evacuation of the waste gases, these flues being connected to the reversing-device or regenerators by one or more sets of vertical flues 8, 8<a>. In the oven shown, having two pairs of regenerators 7, 7a, 19, 19a associated with each heating-wall, the regenerators 19, 19<a> communicate with the lower ends of all the heating-flues 16 through sole flues 18, 18<a> and ports 17, 17<a>, while the chambers 7, 7a communicate through the vertical flues 8, 8<a> top flues 9, 9<a>, and damper-controlled ports 10, 10<a> with the upper ends of the flues 16. Rich gas burner ports 23, 31 are fitted at the bottoms and tops of the heating-flues, and supply circuits 30, 32 lead to the bottoms and tops of the flues 8, 8<a>. When rich gas is used for firing air is supplied through both flues 18 and 18<a> or 9 and 9<a>, and the temperature in the flues 8 and 8<a> is maintained by supplying gas through the conduits 30 or 32 according to the phase of operation. With lean gas as fuel, air is supplied through the regenerators 7<a> or 19<a>, and gas through the regenerators 7 or 19, and if necessary air or gas may be admitted to the flues 8 and 8<a>. When regenerators are not used the heating flues are connected to longitudinal distributing and collecting flues leading to a reversing- device. The fans 8, 8<a> are situated nearer to the " coke " side of the oven than to the " ram " side.
Patent GB-632882-A (GB)
Title: Improvements in or relating to magnetic alloys and methods of producing thin sheets thereof
IPC: C21D8/12
Filed: 1947-10-14
Abstract: Thin sheets of a magnetic alloy are produced from a bar of composition 34.5-35.5 per cent cobalt, 0.3-0.55 per cent chromium, .02 to 0.1 per cent carbon and the balance iron and unavoidable impurities which is reduced to a strip 0.05-0.1 inches thick at 900 DEG -1100 DEG  C. and quenched before the temperature has fallen below 750 DEG  C., then cold reduced to not more than 0.025 inches thick and annealed at 875 DEG -925 DEG  C. in a decarburizing atmosphere to reduce the carbon to below 0.005 per cent.  A preferred alloy contains 35 per cent cobalt, .37 per cent chromium, less than 0.005 per cent carbon and the balance iron and unavoidable impurities.  The alloy may also contain 0.05 per cent to 0.2 per cent of manganese, molybdenum, tungsten, titanium or silicon.  The decarburizing atmosphere may be hydrogen or cracked ammonia but it is preferred to use hydrogen having a dew point of minus 30 DEG  C. when the carbon is .02 to .05 per cent and hydrogen having 3 per cent moisture by volume when the carbon is 0.05 to .1 per cent.
Patent GB-850705-A (GB)
Title: Improvements in and relating to the preparation of flaked products
Inventor: KRUSE NORMAN FREDERICK
IPC: A23K10/33
Filed: 1958-08-28
Abstract: A highly absorbent flaked soybean hull product of low bulk density suitable for use as an animal food is prepared by moistening soybean hulls with water, heating them, e.g. in externally heated vessels and/or by injecting live steam into a mass of the hulls, and crushing the resultant curled hulls to flakes, e.g. by passing them between rolls.  Before heating the moisture content of the hulls is adjusted, i.e. by addition of water and by condensation of steam on the hulls to preferably 15 to 25% by weight and 2 to 12% by weight of oil or fat, e.g. acidulated or cotton seed oil may also be added.  From 5 to 40% by weight of liquid molasses may be incorporated in the final flake product.
Patent GB-934933-A (GB)
Title: Quick-release fastening
Inventor: MARLEY JOHN MEYNELL
IPC: A44B11/25
Filed: 1961-08-02
Abstract: 934,933. Strap fastenings; magnetic fastenings. CLEARWAY COUPLINGS Ltd. July 18, 1962 [Aug. 2, 1961; Sept. 13, 1961], Nos. 28017/61 and 32806/61. Class 44. A strap fastening comprises a pair of members 10, 11, one of which is formed with an aperture 14 into which that end of the other member 11 adapted to be connected to a strap 19 can be inserted, the first member 10 being provided with an inwardly-directed projection 15 on each of two opposite lateral sides of the aperture 14 to engage the adjacent lateral side of the other member 11 when the latter is assembled to the first member, the arrangement being such that in the assembled operative position of the two members, the second member 11 will be disposed so that its end to which the strap 19 is connected, enters the aperture 14 of the first member and engages one side of the inwardly-directed projection 15 whereas the strap 19 itself adjacent to its connection to the second member 11 will pass around the opposite side of the projection 15. The member 10 is provided with a permanent magnet 20 which co-operates with a keeper strip 23 on the member 11 to maintain the members in their operative position. In the arrangement according to Figs. 3 and 4 (not shown), the first member is provided with a further pair of projections which extend into the aperture opposite to the projections 15 and are arranged to engage adjacent parts of the second member when the members are assembled, to prevent pivoting movement between them. Alternatively, the first member is formed with a lip at its outer periphery at the end opposite to the strap attachment, for engagement by a hook-like portion on the second member.
Patent GB-185665-A (GB)
Title: Improvements in and relating to a lock for motor vehicles
IPC: B60R25/09
Filed: 1921-10-21
Abstract: 185,665. Gagin, D. Oct. 21, 1921. Guarding against unauthorized use.-A yoke 15 is placed round the rim of the front wheels and its slotted rear end is secured by a padlock 16 to an horizontal bar 1, which has a plate connection 4 to the running-board, an adjustable connection 6 to the mud-guard, and a rear connection 10 to the chassis.
Patent GB-1478770-A (GB)
Title: Machine for the manufacture of wire reinforcement cages
IPC: B28B21/56
Filed: 1975-07-03
Abstract: 1478770 Making wire reinforcing cages; welding by pressure ED ZUBLIN AG 3 July 1975 [9 July 1974] 28068/75 Headings B3A and B3R A machine for making wire reinforcing cages of cylindrical form and having longitudinal wires and a helical wire welded to the longitudinal wires comprises apparatus for supplying wire to form longitudinal wires 36 through guides 8 disposed in a ring and having wire laying apparatus 15 and welding apparatus (24), Fig. 2 (not shown), on a rotor inside the ring for laying a wire 32 against the longitudinal wires 36 and welding it to the longitudinal wires. The wires 36 are fed from a plurality of reels 35, e.g. twenty-four, to corresponding feed devices 9 suspended from the guides 8, each feed device being provided with a feed roller 14 for guiding a longitudinal wire. The winding apparatus 15 has an annular carrier 16 on which is mounted a base-plate (17), Fig. 2, supporting winding head (18). The winding head is adjustable radially of the machine axis 2 and is provided with two guide rollers (21), (22), the trailing roller (22) in the direction of winding being spring-loaded radially outwardly to press the wire 32 on to the wires 36. Adjacent the roller (22) is a welding roller (25) of the welding apparatus (24), which is also mounted on the carrier 16. Current for welding is supplied from a sliding current collector 29 which has sliding contacts mounted in a housing 30, the current passing to the welding roller via a transformer (26) and cooler (28).
Patent GB-244572-A (GB)
Title: An improved winding drum for theatrical winches and the like
IPC: B66D1/30
Filed: 1924-11-24
Abstract: 244,572. Knight, J. S. Nov. 24, 1924. Clutches, ratchet. -In a multipledrum winch each drum is connected frictionally to the shaft in such a manner that it may be turned by hand with respect to the shaft to take up slack in its rope. Each drum C is mounted on a collar B on the shaft A and is formed with recesses D which contain rollers E. The depth of each recess at one end is less than the diameter of the roller and greater at the other. The centre portion E<1> of each roller is reduced in diameter and receives the end of a finger F pivoted to the drum at G and acted on by a spring H. The drum is turned by a rod inserted in holes in the flanges. When it is desired to provide means for slackening the rope, discs I are freely mounted on the collar B on each side of a drum and are connected by pins J which pass through the recesses D between the roller and the shallower end. The discs may be turned by a rod inserted in holes L, and when turned in one direction the pins J raise the rollers out of contact with the collar and turn the drum through the desired angle. When the discs are turned in the opposite direction, the pins act on the end walls K of the recesses, and the drum is moved to take up slack.
Patent GB-646696-A (GB)
Title: Improvements relating to coat and like hangers
IPC: A47G25/32
Filed: 1948-10-29
Abstract: 646,696. Garment hangers. TWINCO, Ltd., and LAUGHTON, M. Oct. 29, 1948, No. 28090. Class 52 (v)] A coat hanger comprises a moulded plastic frame 10 projecting upwardly at 12 and moulded with a pair of spaced lugs 13 cranked over towards one face of the frame. A rotatable cross-bar 16 is inserted in the bore of the lugs. The hook shank is provided with a shoulder 18 against which a pressure washer 19 is placed, and the shank is then passed through a diametric bore of the rod and receives a second washer 20 over which the hook is rivetted. The hook can thus swivel in the bore of the rod or it can be folded down parallel to one face of the frame.
Patent GB-243894-A (GB)
Title: Improvements in or relating to electrically heated pressing or smoothing apparatus
IPC: D06F75/30
Filed: 1924-11-24
Abstract: 243,894. Skogh, (nÚe Wahlgren), L. W. Nov. 24, 1924. Electric hand-irons. - An iron comprises a hollow cylinder 9 rotatably mounted on an axle 2 and provided with a handle 3 through which pass the conductor wires 13. Resistance wire is coiled within a circumferential helical groove in a body 10 which is made of refractory material and is fixed to the axle.