baber/WOPTO huggingface dataset:
Patent GB-280244-A (GB)
IPC: F21V25/04
Filed: 1927-11-07
Abstract: 280,244. Soc. Anon. des Anciens Etablissements d'Appareillage Electrique Gabreau. Nov. 8, 1926. [Convention date]. Void [Published under Sect. 91 of the Acts]. Thermo-electric batteries. - Thermopile elements are divided into two groups, arranged in a vertical frame, and connected in series, as shown in the Figure. Each thermo-couple may comprise a core-wire receiving electrically, chemically, or mechanically, two layers of different thermo-electric metals. Alternatively, the corewire may itself form one of the two metals.
Patent GB-798217-A (GB)
Title: Process for the production of stable, peroxide-containing sodium borate
IPC: D06L4/10
Filed: 1955-10-21
Abstract: Non-crystalline, stable and highly soluble sodium borate containing over 15 per cent by weight of active oxygen is prepared by evaporation to dryness of a solution containing sodium borate and hydrogen peroxide having a molar ratio H2O2 : Na2O of 1.7-2.4 : 1 and at a temperature below 30 DEG  C., by passing said solution over a surface (e.g. a series of rollers) at 100-130 DEG  C.  The solution preferably has a molar ratio B2O3 : Na2O of 1 : 1.1-2, and may be prepared from boric acid, sodium hydroxide and hydrogen peroxide or equivalent reagents, e.g. sodium metaborate or borax, sodium hydroxide and hydrogen peroxide or sodium peroxide, the temperature during preparation preferably not exceeding 30 DEG  C. Although the use of stabilizers such as magnesium or sodium silicate is not necessary in general, they may be added during the preparation. Examples are given.
Patent GB-519481-A (GB)
Title: Improved arrangement for controlling gas- or vapour-discharge tubes
IPC: B23K11/24
Filed: 1938-10-18
Abstract: 519,481. Control systems for consumption apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Oct. 18, 1938, No. 30182. Convention date, Oct. 21, 1937. [Class 38 (iv)] Thermionic control.-In a device for controlling vapour or gas - discharge tubes 4, 5, which, by means of an arrangement supplying alternating voltages are ignited successively, the alternating voltages are generated by current pulses in a circuit comprising the primary 11 of a transformer 8, in. which the passage of current during one half wave and in one direction can be controlled by a grid-controlled rectifier 15 whilst uncontrolled means comprising a rectifier 19 oppositely connected in parallel with rectifier 15, or an oscillatory circuit, including a separate winding on the primary of transformer 8, are provided to pass corresponding parts of the half - waves in the other direction, so that the ignition of the discharge paths occurs at a time interval of about 180 degrees or about 180 degrees. In the example the current for a seam-welding installation is taken from the secondary 2 of a mains transformer 3 and supplied to welding-electrodes 1 through gridcontrolled discharge vessels 4, 5 which are preferably oppositely connected in parallel. The control voltage produced by the rectifier 15 is applied to the grids 6, 7 through the secondary windings 9, 10 of transformer 8. The primary winding 11 of transformer 8 is in series with the secondary 12 of a transformer 13 and with the grid-controlled rectifier 15. The phase of the voltage applied to control grid 16 is adjusted suitably with respect to that of transformer 13 A second control grid' 17 may be provided for controlling the duration.of the impulses of the welding current and of the periods of rest. The non-controlled rectifier 19 is oppositely connected in parallel with the rectifier 15 and, by inserting a condenser 20 in the common supply conductor for the two vessels 15, 19, it can be ensured that the shape of the curve of the voltage set up at secondary windings 9, 10 approximately corresponds to the wave form of the alternating voltage of the transformer 13. If this latter wave form is symmetrical and, for example of pure sine shape, the main discharge tubes 4, 5 can be ignited 180 degrees or thereabouts after each other.
Patent GB-302269-A (GB)
Abstract: 302,269. Holzverkohlungs-Industrie Akt.-Ges. Dec. 13, 1927, [Convention date]. Addition to 291,434. Acetic and other aliphatic acids are concentrated by treating a solution of the acid in an organic solvent with solid or partly or wholly dissolved salts such as sodium acetate as described in the parent Specification and then distilling off the acid from the acid salt in the form of paste or solution, without first separating the salt in solid form. The distillation may be effected under reduced pressure and at 170-220‹ C.
Patent GB-520387-A (GB)
Title: Improvements relating to electric lamps
IPC: F21V17/00
Filed: 1938-10-20
Abstract: 520,387. Vehicle lamps. LUCAS, Ltd., J., and WATSON, E. A. Oct. 20, 1938, No. 30324. [Classes 75 (ii) and 75 (iv)] [Also in Groups IV and XXXVI] A lamp suitable for use in vehicles comprises a transparent or translucent front a made as a moulding from synthetic resin or other thermoplastic material having on its inner surface a holder b for a lamp-bulb c receiving current from conductors d embedded in or secured to the front. The holder b may be secured to, moulded integrally with, or incorporated during the moulding operation of the front a. A groove or recess e in the front accommodates the contact ends f of the conductors d. Lenticular or prismatic surfaces may be provided on the front. A reflector h, which may be of metal, glass, or thermoplastic material is secured to a peripheral lip i on the front a by wedge-shaped projections k engaging behind complementary projections j. The lamp may be secured to a part o of the vehicle by means of a rubber ring n engaging an annular projection m on the front a.
Patent GB-490805-A (GB)
Title: Improvements in or relating to foot arch supports
IPC: A43B7/22
Filed: 1937-11-05
Abstract: 490,805. Foot-arch supports. SELIGMANN, H. Nov. 5,1937, No. 30438. Convention date, Nov. 21, 1936. [Class 17 (ii)] A foot-arch support comprises a hollow rubber body A extending over the undersurface of the foot from the heel to the ball and filled with liquid, the hollow body being made inexpansible over its whole extent by a covering of leather B except over a portion F corresponding to the foot arch, where it is formed into an arch portion and is expansible. A second portion under the metatarsus may also be left expansible, if desired.
Patent GB-806540-A (GB)
Title: Coating process
IPC: A23G3/20
Filed: 1956-10-05
Abstract: A cold coating process that may usefully be applied to pharmaceutical tablets and the like comprises providing cores with two or more coatings comprising a syrup coating and one or more additional coatings of syrup and/or powder wherein, in at least one coating stage syrups and/or powders are used which contain finely-divided oxides of metals or silicon which have been formed as an aerosol by thermal decomposition of suitable volatile compounds in the vapour or gaseous phase in the presence of agents having an oxidizing or hydrolysing action and are recovered as an aerogel and which have a particle size smaller than 200 mm . Suitable metal oxides are aluminium oxide or titanium dioxide.  In the coating process, the cores may be coated initially with a syrup containing the oxide, or with a conventional syrup coating and then have an application of a coating powder containing the oxide, or with a conventional syrup coating and then have an application of a coating powder containing the necessary oxide. The presence of the oxide in the coatings speeds up the drying times and results in a much quicker coating process than possible hitherto.  In an example, cores were coated with a syrup comprising gelatina alba 15 parts, distilled water 50 parts, mucilago gummi arabic 130 parts, saccharin syrup (70 per cent) 805 parts; the syrup coated cores were then dusted with a powder comprising calcium carbonate 35 parts, silica 16 parts, talc 25 parts, saccharin 20 parts and gum arabic 4 parts.  These coating stages may be repeated as often as required to build up a sufficient coating thickness.
Patent GB-1171505-A (GB)
Title: Improvements in Test Patches for Identifying Allergic Contact Eczemas
Inventor: FREGERT GUSTAV SIGFRID
IPC: A61B10/00
Filed: 1967-07-03
Abstract: 1,171,505. Biological test patches. G. S. FREGERT. 3 July, 1967 [11 Aug., 1966], No. 30594/67. Heading A5R. A test patch for application to the skin for identifying allergic contact eczemas comprises a liquid absorbing test piece 6, re.g. blotting or filter paper on a liquid and gas impermeable carrier sheet (1). The carrier sheet comprises aluminium foil covered on both sides with plastic foil 3, 4 through which the test piece 6 and a paper foil 5 are heat sealed to opposite sides respectively of the aluminium foil. The test patch is secured to the skin by adhesive plaster (not shown). Several test patches may be arranged as a strip, rectangular apertures (10) in the carrier sheet separating individual test patches which may be severed from one another. Alternatively the carrier sheet comprises resinous material which may be a laminate of two or more materials e.g. water impermeable polyethylene and gas, impermeable polycarbonate.
Patent GB-911612-A (GB)
Title: Improvements in and relating to measurement and/or indication of fluid flow
Inventor: BEAUMONT PETER
IPC: G01P13/00
Filed: 1959-09-08
Abstract: 911,612. Measuring fluid flow electrically. GENERAL ELECTRIC CO. Ltd. Sept. 6, 1960 [Sept. 8, 1959], No. 30620/59. Class 40 (1). [Also in Group XXIX] Apparatus for measuring fluid flow comprises a disc with a series of peripheral vanes, subjected to a torque by fluid flow, and electromagnetic means for producing an equal and opposite torque in the disc, the current through the electromagnetic means being proportional to the rate of fluid flow. As shown (Figs. 2, 3), the disc 6 has its periphery shaped into a series of vanes, and is mounted on a pivot 5 for rotation about its axis as limited by holes 12 in the disc through which pass screws 10 fixing a bearing plate 7 to a conical supporting member 2. Downstream of the disc, a U-shaped core 13 fixed to the cylindrical housing 1 is energized by a coil 18, the core having a shading ring 19 on one limb to produce a torque in disc 6 when coil 18 is fed with A.C. which opposes the torque produced by fluid flow. One vane of disc 6 carries a contact 22 (Fig. 5) co-operating with fixed, insulated contacts 23, 24 projecting through the housing 1. The current through coil 18 is preadjusted to a value which makes the electromagnetic torque smaller than the aerodynamic torque produced by a required gas flow, whereby the disc 6 is rotated to make contact between contacts 22, 24, and a signal is sent via R 1 C 1  and amplifier 35 to the control unit, which increases the current through coil 18 and causes contacts 22, 24 to part. Thus the disc 6 oscillates as contacts 22, 24 make and break. The average value of the currents in coil 18 during oscillation is proportional to the rate of fluid flow. If the fluid flow is excessive, contacts 22, 24 do not subsequently break, and the signal through R 1 C 1  also passes through R 2 C 2 , which has a much higher time constant, to energize an alarm circuit 39. Low gas flow is indicated by an alarm circuit 36, energized when the balancing current in coil 18 is low. The Specification relates the materials required to make the apparatus particularly suitable for monitoring the flow of cooling gas in a fuel channel of a nuclear reactor.
Patent GB-842620-A (GB)
Title: Improved rotary cutting mechanism
IPC: A01D34/535
Filed: 1956-10-09
Abstract: 842,620. Radial cutting machines. MASSEYFERGUSON, Inc. [formerly MASSEY-HARRIS-FERGUSON Inc.]. Oct. 9, 1956 [Oct. 28, 1955], No. 30705/56. Class 5(1). Rotary knives 40 are arranged to yield backwards on striking any solid material by mounting them on V-shaped plates 55 freely pivoted on pins 56 in a central rotating plate, the centre of gravity G of each plate 55 trailing behind its effective radius. This allows each knife to tip back easily for clearance on meeting a solid object at the co-operation shear bar 35 whereas normal centrifugal force keeps the knives fully out. Stop pins 59 prevent the plates 55 from swinging out too far. Thereby the plates 55 can be made light.
Patent GB-639685-A (GB)
Title: Process for removing cobalt from zinc electrolytes
IPC: C01G9/00
Filed: 1947-11-19
Abstract: In a process for precipitating cobalt with the aid of zinc dust from electrolytes used in the electrolytic refining of zinc and containing more than 0.1 g. per litre copper, e.g. 0.5-1.5 g. per litre, antimony, e.g. as tartar emetic or antimony oxide, is added to the electrolyte in amount equal to 4-10 times the weight of cobalt in solution, the comparison being on the basis of the weights of the elements.
Patent GB-407768-A (GB)
Title: Improvements in brakes
IPC: F16D65/14
Filed: 1932-11-01
Abstract: 407,768. Internal - expanding brakes. SOC. DES FREINS HYDRAULIQUES S. DE LAVAUD, 4, Rue de Teheran, Paris. Nov. 1, 1932, No. 30794. Convention date, Nov. 3, 1931. [Class 103 (i).] Operating means for an internal-expanding brake comprises a plunger 1 acting on a roller 7 on the end of a bell-crank lever 9, a roller 8 on the other end of which acts on a plunger 3 and the pivot 10 of which is supported by a carriage 13 running by rollers 14, 15 on a fixed frame and bearing on a plunger 2. Plungers 2, 3 operate the brake shoes and are at rightangles to the plunger 1 which may be operated by mechanical, electrical or hydraulic means. This arrangement allows rollers 7, 8 to move approximately in the same path as the pistons 1, 3 with which they are associated. In a modification the pivot 10 is mounted on a link mounted on a fixed pivot and a further link connects the pivot 10 with the piston 2. In a further modification the pivot 10 is carried by two cheek members mounted on a fixed pivot and carrying a pivoted arm engaging a recess in the piston 2.
Patent GB-637559-A (GB)
Title: Improvements in or relating to gas turbine engines associated with a gas producer under pressure
IPC: F02C3/28
Filed: 1947-11-20
Abstract: 637,559. Gas turbine plant. SOC. RATEAU and ANXIONNAZ, R. Nov. 20, 1947, No. 30842. Convention date, Jan. 16. [Class 110(iii)] Gas is generated in a producer Gz, Fig. 2, at a pressure higher than that of the combustion chamber Ch1 and is expanded down in a turbine T2. The turbine T2 drives a compressor C2 which raises the air pressure from that of the delivery of the compressor C1 to that of the producer. The producer gas, which may have been cooled in purifiers, is heated in an exhaust gas heat-exchanger E2. The power delivered to a generator G1 is varied by varying the. power applied to the compressor C2. This is done by putting power into or taking power off the combination T2, C2 by means of a motor-generator M2G2 or by byepassing the turbine T2. Alternatively, the producer gas may be heated in a combustion chamber or in a heat-exchanger receiving hot gases from a combustion chamber. In a modification. the turbines T1, T2 and the compressors C1 are in two stages; the high-pressure combustion chamber receiving gas from the first stage of turbine T2 and the inter-stage reheater receiving gas from the final exhaust of turbine T2. In the plant shown in Fig. 3 steam for the producer Gz is generated in a heat-exchanger K and superheated in another K1. Part of this steam is used to heat the producer gases in an exchanger E2. The pressure at which the producer works is determined by the feed pump P.
Patent GB-913840-A (GB)
Title: Improvements in or relating to airborne glide slope director systems
IPC: G01C23/00
Filed: 1960-09-07
Abstract: 913,840. Radio navigation. PIKE, E. W., and LITTLE, D. S. Sept. 7, 1960 [Sept. 11, 1959], No. 30850/60. Class 40 (7). An airborne glide slope director comprises means for measuring the actual glide slope of the aircraft as the ratio of the vertical speed of the craft to its ground speed, these two speeds being measured on the craft by sensors 32 and 34 respectively. The vertical speed sensor 32 may comprise an aneroid altimeter and servomotor as disclosed in Specification 899,505 and the ground speed sensor may comprise a conventional Doppler radar. Electrical outputs from the sensors 32 and 34 are applied to a divider circuit 36 giving a signal representing the angle of descent of the craft which is applied through a switch 44 to deflect a glideslope needle 28 vertically from a central position if the angle of descent differs from the desired glide slope as selected by a bias circuit controlled by a rotatable annular member 50 which is set so that the desired glide slope is indicated on an inner fixed scale 60 by an index 57 on the rotatable member 50, the corresponding altitudes and distances from the touch-down point of all points on the desired glide slope being indicated respectively by an altitude scale on the rotatable member 50 and a distance scale 56 on an outer fixed annular member 54. In operation the pilot selects the altitude desirable for the approach conditions and closes the switch 44 when the corresponding distance as measured by a conventional D.M.E. system is reached. The craft is then maintained on the desired glide slope by maintaining a pitch index 24 in alignment with the glide slope needle 28. Alternatively, the switch 44 may be closed automatically when the craft is at a predetermined distance from the touch-down point as indicated by a marker beacon or by the D.M.E. Before commencing the glide slope descent the vertical speed signal from the sensor 32 may be applied through switches 74 and 78 to control the needle 28 to indicate any departure from level flight. Conventional means may also be provided for displaying on the indicator 20, (1) pitch vertical displacement of the index 24), (2) roll (rotation of horizon bar 22), and (3) heading or bearing (displacement of needle 26).
Patent GB-308518-A (GB)
Abstract: 308,518. Rushton, E. T. May 30, 1928. Tyres, elastic, tools for removing and replacing.-A tool for manipulating collapsable rims comprises a pair of arms 15 pivoted intermediate the ends of a sleeve 11 which forms a guide for a third arm 13 constituted by a bolt threaded through a nut 35. Each arm is provided with a hook 47 to engage the rim flange and a thrust surface 55 arranged in axial alignment with the arm. The tool is operated by a handle 45 formed with a bevel pinion 41 meshing with bevel teeth on the nut which is held against longitudinal movement in the sleeve 13.
Patent GB-191896-A (GB)
Title: Improvements in toothpicks
IPC: A61C15/02
Filed: 1921-11-18
Abstract: 191,896. Blechschmid, A. Nov. 18, 1921. Tooth-picks.-Tooth-picks having points at both ends are made with one point disposed at an angle to the body. A flat tooth-pick, Fig. 1, has one end c bent at right-angles to the body a, and the short part c may in addition be twisted. A round tooth-pick a, Fig. 5, is bent into hook shape so that the point faces the main part. Fig. 3 shows a tooth-pick of this type made by inserting the parts a, c of an ordinary flat tooth-pick into a metal or other holder e, and Fig. 6 shows the parts a, c inserted into a U.shaped holder b<1>.
Patent GB-893730-A (GB)
Title: Purification of methylacetate by distillation
Inventor: OKUMA KENSUKE
IPC: C07C29/74
Filed: 1959-09-10
Abstract: <PICT:0893730/III/1> A mixture comprising methyl acetate, methanol and acetaldehyde, such as may result from the interaction of polyvinyl acetate with methanol, is passed through an inlet 2 to an extractive distillation column 1 to which water is supplied through an inlet 3.  Aqueous methanol is withdrawn at the base of the column, and a mixture containing methyl acetate and acetaldehyde vapours passes from the top of the column to a partial condenser 4 and thence to a separator 41.  Condensate from the separator 41 is returned by pipe 11 to the top of column 1, and the vapours from separator 41 are passed by pipe 5 to a second partial condenser 6, the liquid and vapours from which are both passed to the lower part of a fractionation column 7.  Methyl acetate of reduced acetaldehyde content is withdrawn from the base of column 7 through pipe 10, and the vapours from the top of the column pass to a condenser 8, from which condensate is returned to the top of the column by pipe 12. Acetaldehyde vapour is withdrawn through pipe 9.  Dimensions and operational details of a suitable apparatus are given.
Patent GB-467336-A (GB)
Title: Process of and apparatus for the production of magnesium
IPC: C22B26/22
Filed: 1935-11-08
Abstract: 467,336. Distilling magnesium. I. G. FARBENINDUSTRIE AKT.-GES. Nov. 8, 1935, No. 30958. Convention date, Feb. 12. [Class 82 (i)] [Also in Group XII] Magnesiferous materials are reduced by means of aluminium, silicon, or other reducing- agent which yields non-gaseous oxidation products in the presence of an inert gas such as hydrogen, the magnesium vapours produced being carried off from the reaction zone directly after being formed by sweeping the reaction mixture with a current of said inert gas impinging on the reaction mixture while it is reacting, at such a rate that the partial pressure of the magnesium vapour in the atmosphere in immediate contact with the reaction mixture is prevented from rising up to and beyond the formation pressure of the magnesium liberated from the reaction mixture. A muffle furnace 1, for carrying out the reduction, is of small height in comparison with its width and comprises a horizontal &c. slightly inclined screen 2 jigged by means of a crank 3. The reaction mixture is fed on to the screen 2 through a hopper 5 provided with a lock 5a, coarser spent material being discharged at 6 and any finer matter passing through the screen flowing over the ridge 10 into collectors 11, preferably heated. The furnace is heated by electric resistances 4 and hydrogen is directed onto and through the screen by pipes 7. The hydrogen charged with the magnesium vapour passes to a condensing chamber 8, the hydrogen being returned to the pipes 7 by means of a pump 9 and the fluid magnesium being drawn off at 12.