baber/WOPTO huggingface dataset:
Patent GB-846039-A (GB)
Title: Improvements relating to fuel cells
Inventor: CHAMBERS HUBERT HAROLD
IPC: H01M8/14
Filed: 1958-01-23
Abstract: 846,039. Fuel cells. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Jan. 22, 1959 [Jan. 23, 1958], No. 2358/58. Addition to 806,592. Class 53. A fuel cell employing an electrolyte consisting of a mixture of'alkali metal carbonates in such proportions that it exists in a pasty state at the working temperature of the cell is provided with two electrodes which are either embedded in a block of the electrolyte or are situated one on each side of it. Figs. 1 and 2 show a number of cells joined in series by hipolar electrodes 1 separated by slabs 3 of electrolyte. Each electrode consists of a steel plate having a cavity on each side which is filled with active material 2 which may consist of a sintered mass of zinc oxide mixed with silver as described in Specification 806,591. Each electrode is provided with a number of apertures 10 leading from one side of the electrode to manifolds 4, 11 connected to pipes 5, 6. The opposite side of the electrode is provided with a second set of apertures 15, 16 leading to manifolds 13, 14 connected to pipes 7, 8. The electrodes and electrolyte slabs are clamped together by members 17 bolted together at the corners. In operation fuel is fed through the pipes 5 to the active material on one side of each electrode, while air mixed with carbon dioxide is fed through the pipes 7 to the opposite side of each electrode. Spent fuel and air pass out through the pipes 6, 8 respectively. Fig. 3 shows a modification in which the two electrodes are embedded in a block 20 of the electrolyte. The electrodes consist of cores 23, 24, having coarse porosity, and outer shells 25, 26 of fine porosity. Fuel and air are supplied through pipes 27, 29, spent fuel and air passing out through the pipes 28, 30.
Patent GB-452573-A (GB)
Title: Improvements in and relating to electric condensers
IPC: H01G4/255
Filed: 1935-01-25
Abstract: 452,573. Condensers. PORZELLANFABRIK KAHLA, Kahla, Thuringia, Germany. Jan. 25, 1935, No. 2540. Convention date, Jan. 26, 1934. [Class 38 (ii)] An adjustable condenser comprises a fixed or variable main unit associated with a trimming plate which can be rotated relative to the armature of the main condenser, both being held by a common bolt. The dielectric of the main condenser is of inorganic and preferably ceramic material of low loss and high dielectric constant while that of the trimming condenser is of either inorganic or organic material of low loss, high dielectric constant being not so essential. In the example. Figs. 1 and 2, fused-on coatings 16, 17 on ceramic plates 11, 12 and a sickle-edged coating 20 on a plate 10 form respectively the main and trimming condensers, being held by bolt 13. Fig. 5 shows an trimming plate formed by a . complete circle of coating on a plate 50 of varying thickness. The main condenser may be adjustable as illustrated in these examples or may be formed from a packet of mica plates with metal coatings similarly held by a central bolt. Fig. 10 shows a cylindrical condenser, the inner coating 91 of which, at the end, coacts with a coating 96 on a rotatable plate 95. The Specification as open to inspection under Sect. 91 comprises also a modification in which an assembly of metal coated mica plates is mounted within a ceramic casing on the outer side of which is attached a rotatable ceramic plate with a semicircular metal coating for the purpose of adjustment. This subjectmatter does not appear in the Specification as accepted.
Patent GB-917518-A (GB)
Title: Magnetic analog-to-digital converter
IPC: H03M1/24
Filed: 1961-01-23
Abstract: 917,518. Electric selective signalling systems. GENERAL PRECISION Inc. Jan. 23, 1961 [Jan. 25, 1960], No. 2559/61. Class 40 (1). A shaft digitizer using a ferrite disc having a coded pattern of raised portions is characterized in that the disc is biased by a steady magnetic field in a direction perpendicular to the disc. Sensing of the disc is effected by an annular head 20, Fig. 5, which is so arranged that it is only saturated by the biasing field 22 when it is over a raised portion as shown, and thus the impedance of a sensing coil 21 on the head is high when the head is over a low portion, producing an output signal across a diode 26 from a generator 24, and the impedance is low when the head is over a. raised portion producing no output signal. Two mountings (Figs. 1 and 2, and Figs. 10 and 11, not shown) for a conventional skewed V-scan binary-coded disc are described, and the biasing field can be produced either by a permanent magnet or by an electromagnet. Serial or parallel read-out is outlined (Figs. 9 and 13, not shown). Specification 886,261 is referred to.
Patent GB-193363-A (GB)
Title: Improvements in or relating to colour photography
IPC: G03C7/20
Filed: 1921-08-13
Abstract: 193,363. Kelley, W. van D. Aug. 13, 1921. Addition to 193,069. Colour photography.- In carrying out the process described in the parent Specification, exact registration of the superposed images is obtained by causing a full fitting pin a to pass through one of the elongated perforations of the two films on one side so that shrinkage is taken up on one side only of the full fitting pin. A second pin b fitting the opposite perforation from top to bottom but not from side to side may be provided. Specifications 130,002 and 130,603 are referred to.
Patent GB-413757-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/74
Filed: 1933-01-26
Abstract: 413,757. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and LADNER, A. W., Danbury, Essex. Jan. 26, 1933, No. 2574. [Class 39 (i).] A cathode-ray tube is provided with a system for deflecting the ray in one direction and a plurality of independent systems each capable of deflecting the ray in a direction different from the first mentioned direction, and adapted to produce equal deflections for like values of applied deflecting potential. The systems may consist of a pair of plates NP and of additional pairs of trian - gular plates a, b, Fig. 1, or of three or more pairs of rectangular plates a, b, c, Fig. 2 ; the total area of the additional plates may be equal to that of the plates NP. The additional pairs may be used for examining a plurality of waves simultaneously, the plates NP providing the time base. To obtain equal deflecting action, deflecting systems may be formed by coupling the plates a, c located at opposite ends. In a modification, the plates may be hollow and located one within the other.
Patent GB-1293304-A (GB)
Title: Vinyl trichlorosilane
Inventor: SEILER CLAUS-DIETRICH
IPC: C07F7/12
Filed: 1971-01-19
Abstract: 1293304 Vinyl trichlorosilane DYNAMIT NOBEL AG 19 Jan 1971 [20 Jan 1970] 2697/71 Heading C3S Vinyl trichlorosilane is prepared by reacting trichlorosilane with vinyl chloride in the absence of moisture in a reaction zone at a temperature of from 680‹ to 850‹ C. and for an average residence time in said zone of from 0À2 to 1À8 seconds. The process is preferably carried out in a tubular reactor made of iron, ceramics or graphite, using stoichiometric quantities of reactants. Uses.-The product may be used for sizing silicate-containing materials.
Patent GB-1133192-A (GB)
Title: Improvements in and relating to electrophotography
IPC: G03G13/045
Filed: 1966-01-20
Abstract: 1,133,192. Electro-photographic processes. FUJI SHASHIN FILM K.K. Jan.20, 1966 [Jan.21, 1965], No.2701/66. Heading G2H. An electro-photographic process which avoids background development comprises electrostatically charging a photo-conductive insulating layer on a conductive support, imagewise exposing the charged layer to produce an electrostatic latent image, the layer being reversely and uniformly charged before developing the latent image, the potential contrast existing between the inexposed and exposed areas being maintained during the reverse charging. In an example, a layer of photo-conductive material is uniformly charged to have a potentional V o,  Fig.2A, e.g. 1200 V. Exposure produces a potential contrast of #V, Fig. 2B, between unexposed portions X o  to X 1  and exposed portions X 1  to X 2 . A reverse charge e.g. - 900 V causes the potential of the portion X 1  to X 2  to fall to V R , Fig. 2C, having an approximate value of 50 V which prevents background development.
Patent GB-971873-A (GB)
Title: Variable ratio power transmission apparatus
Inventor: HOBBS HOWARD FREDERICK
IPC: F16H3/66
Filed: 1961-01-24
Abstract: 971,873. Change-speed gear. HOBBS TRANSMISSION Ltd. Jan. 19, 1962 [Jan. 24, 1961], No. 2761/61. Heading F2D. A five forward and one reverse ratio planetary gear comprises a first input clutch A, engaged for all the forward ratios to drive a shaft 10 and a sun-gear 13, the latter meshing the planet pinion 24 of a three-gear planet cluster 22 . . . 24 rotating in a carrier 18. The larger pinion 27 of a two-gear cluster 27, 30 also meshes the planet pinion 24 while the smaller pinion 30 thereof meshes a sun-gear 31 fast with an output shaft 32. To establish the first ratio, with the input clutch A engaged, a brake 37 is engaged to station a ring gear 21 meshed by the planet pinion 22 of the three-gear cluster. The planet cage 18 then rotates slowly backwards. To establish the second ratio, the brake 37 is disengaged and a brake 36 is instead engaged, to hold the cage 18 stationary. To establish the third -ratio, the brake 36 is disengaged, thus freeing the cage 18, and a brake 35 is engaged to hold a sun-gear 16 meshing the planet pinion 22 of the three-gear cluster; the cage now rotates slowly forward. Fourth is established by disengaging the brake 35, and engaging a brake 34 to station a smaller sun-gear 14, so that the cage 18 rotates forwardly at an increased speed. Fifth (direct drive) is established by disengaging the brake 34, and engaging a second input clutch B, locking-up the gear. For reverse, the clutch A is disengaged, but the clutch B is engaged to drive the sun-gear 14, and the brake 37 is engaged to station the ring gear 21. As modifications, the three-gear planet cluster 22 . . . 24 may be provided with additional pinions meshing with sun gears and/or ring gears to provide more ratios. In another construction, Fig. 2 (not shown), the cage is carried by the output shaft, and the brakes 36, 37 are fast with ring gears meshing the pinions of the two-gear cluster 27, 30. Reference has been directed by the Comptroller to Specification 738,590.
Patent GB-1133422-A (GB)
Title: Improvements in or relating to methods of manufacturing planar transistors
Inventor: JOSEPH OWEN FRANCIS
IPC: H01L29/00
Filed: 1967-01-19
Abstract: 1,133,422. Semi-conductor devices. MARCONI CO. Ltd. 9 Oct., 1967 [19 Jan., 1967], No. 2795/67. Heading H1K. A method of manufacturing a planar transistor comprises the steps of diffusing P-type impurities into an N-type silicon chip 1 through an aperture in an oxide layer 2 to form a P- doped region 3 in the chip; removing the oxide layer 3A formed in the aperture during the diffusion process, introducing further P-type impurities through the aperture to produce a P + layer 5 at the surface of the P-doped region; and subsequently diffusing N-type impurities into the P-doped region to produce an N-doped region 4 therein with an oxide layer 4A. Holes are etched in the oxide layers to permit electrical connection to be made to the various regions. It is stated that the presence of the P + layer on the P-type region reduces the transistor saturation or reverse current.
Patent GB-1503844-A (GB)
Title: Compositions for regulating plant growth that contain phospholenium salts
IPC: A01N57/36
Filed: 1976-01-26
Abstract: 1503844 Plant-growth regulating compositions BAYER AG 26 Jan 1976 [27 Jan 1975] 02848/76 Heading C1B [Also in Division C2] A plant growth-regulating composition contains as active intredient a phospholenium salt of the formula R' is optionally substituted alkyl, alkenyl, alkynyl or cycloalkyl, aralkyl which is optionally substituted in the aryl part, optionally substituted alkoxy or optionally substituted alkylthio, R<SP>2</SP> is optionally substituted alkyl, alkenyl, alkynyl or cycloalkyl or aralkyl which is optionally substituted in the aryl part, Y is a chain of the structure or which is optionally monosubstituted or disubstituted by halogen and/or alkyl, and A<SP>#</SP> is one equivalent of an anion of a nonphytotoxic acid, e.g. Cl#, I # Br #, CH 3 SO 4 # or HSO 4 # in admixture with a solid or liquefied gaseous diluent or carrier or in admixture with a liquid diluent or carrier containing a surface-active agent.
Patent GB-136027-A (GB)
Title: Improvements in Metal Planing Machines.
Inventor: DELAGNEAUX APPOLINAIRE
IPC: B23D1/18
Filed: 1919-02-07
Abstract: 136,027. Delagneaux, A. Feb. 7, 1919. Planing.-The tool-holder c carries two yokes or frames d, e pivoted at a, b so that the tools f, g are turned back to back. The tools are held by slotted bolts h, which can be turned to give the tool any desired angular position for planing oblique or vertical surfaces. The tool f, Fig. 2, is used for roughing, and the tool g for finishing. The frame e is capable of transverse adjustment, being pivoted to a screw-threaded hinge-pin b which can be traversed in the frame e as required and then clamped by the nut n.
Patent GB-1375953-A (GB)
Title: Silencers for internal combustion engines
IPC: F01N1/06
Filed: 1973-01-22
Abstract: 1375953 Silencers FAHRZEUG-UND JAGDWAFFENWERK ERNST THALMANN SUHL VEB 22 Jan 1973 3187/73 Heading F1B A silencer comprises at least two identical inserts disposed one behind the other and angularly offset by 180 degrees, each insert comprises three chambers 2 . 4 and five connecting pipes 9 ... 13, a further chamber forming a fourth chamber 5, common to two adjacent inserts, three of the pipes issuing from the first chamber 2 respectively into the second 3, third 4 and fourth chambers 5. The respective pipe lengths are in the ratio 1:2:4 and their respective cross-sections are equal, the second and third chambers communicate with the fourth chamber through the remaining two pipes and the pipe 13 inter-connecting the third chamber with the fourth chamber is closed at its end and has peripheral orifices. The silencer insert is prefabricated as a complete unit and inserted in casing 15. Gas flows via a perforated plate 16 into chamber 2 whence it is split up into parts which flow via pipe 9 into chamber 3, via pipe 10 into chamber 4 and via pipe 11 into chamber 5. The part in chamber 3 flows via a pipe 12 into chamber 5 and the part in chamber 4 flows via a pipe 13 into chamber 5.
Patent GB-284637-A (GB)
Title: Improvements in or relating to aircraft and submarines
IPC: B63G8/18
Filed: 1928-02-01
Abstract: 284,637. Robiola, A. Feb. 1, 1927, [Convention date]. Void [Published under Sect, 91 of the Acts]. Submarine vessels, special apparatus for steering.-For steering and balancing a submarine or for causing it to rise or sink slowly in a spiral path groups of blades or wings are pivoted on each side of the craft on transverse axes, each group being independently controlled, or actuated in conjunction with a group on the other side. Fig. 2 shows a plan of an aeroplane having four groups of four wings a, the wings in each group being arranged in step formation with the highest plane foremost. A rear group and an opposite forward group way be moved together. A modified form is described in which larger groups are similarly arranged in plan, but in side view the wings are in inclined rows as shown in Fig. 1<a>. Submarines have four groups arranged two forward and two aft with the surfaces of each group normally in a horizontal line.
Patent GB-719868-A (GB)
Title: Improvements in or relating to method of making sponge material and resulting product
IPC: C08J9/30
Filed: 1952-02-07
Abstract: Sponge material is made by forming dispersed bubbles in a solution of polyvinyl alcohol containing less than 10 per cent. residual hydrolyzable material in the molecule, and a froth stabilizing wetting agent, reacting the alcohol with formaldehyde in the presence of an inorganic acid catalyst and in a mould, the process being characterized by adding an organic nitrogen compound having at least one reactive hydrogen atom on a nitrogen atom and in an amount capable of forming a reaction product with part only of the formaldehyde.  Specified nitrogen compounds are p-toluene sulphonamide, casein, glue, corn protein, soya bean protein, sulphamic acid, triethylene tetramine, acetanilide, guanine, diethanolamine, sulphanilic acid, urea, hydantoin, methyl hydantoin and dimethyl hydantoin.  Sulphuric acid is the specified inorganic acid.  Specification 682,313 is referred to.
Patent GB-1516921-A (GB)
Title: Standby dc power supply
IPC: H02J7/34
Filed: 1976-01-28
Abstract: 1516921 Standby supply systems; converters INTERNATIONAL STANDARD ELECTRIC CORP 28 Jan 1976 [6 Feb 1975] 03278/76 Headings H2H and H2F A standby supply system for supplying D.C. to a load 3 comprises a battery 2, a rectifier circuit 1 supplied from an A.C. source 9, and a D.C. to A.C. converter 4 controlled by the load current and/or the load voltage, the output of the converter being fed back to the A.C. source or to the rectifier circuit in dependence on the state of charge of the battery and the converter being controlled by the load current and/or the load voltage so that the load receives the correct supply voltage independent of the instantaneous state of the battery. When the mains supply is present, the rectifier circuit 1, which includes thyristors T 1 , T 2  controlled by a circuit 15, charges the battery 2 and supplies D.C. to the load via a smoothing circuit 5, 6. The converter 4, which includes thyristors TA, TB controlled by a circuit 8 in dependence on the load voltage, feeds back to the supply 9 any voltage in excess of that required by the load. If the mains supply fails, at least one of the thyristors TA, TB is held conductive so that the battery supplies power to the load. A system for use with a three phase supply is also described.
Patent GB-547851-A (GB)
Title: Improvements in automatic fire arms
IPC: F41A5/26
Filed: 1941-03-11
Abstract: 547,851. Automatic fire-arms. ELLARD, H. March 11, 1941. No. 3289. [Class 119] In automatic fire-arms, where the breech action is operated by a gas-actuated piston 1 and the pressure receiving end of the piston is formed with a cavity 13 of conoidal form to constitute a chamber for collecting particles of metal and carbon carried in by the gas, the gas passes through a ferrule 11 with a conical bore and is delivered with an injector-like action into the cavity 13 which has concaved side and bottom walls, a small space 15 existing between the ferrule and the end of the piston when the latter is in its most advanced position. In front of the ferrule is placed a revolvable bush 6, into which the gas enters through one of a graduated series of holes 7.
Patent GB-547807-A (GB)
Title: Improvements in and relating to ceilings, walls and partitions
IPC: E04B5/48
Filed: 1941-03-12
Abstract: 547,807. Ceilings; walls &c. DUNKERLEY, V. March 12, 1941, No. 3392. [Classes 20 (ii) and 20 (iv)] Panels 1 are secured in position by retaining members 4 embedded in the concrete or the like 3 of the ceiling, wall or partition and provided with flanges 2 embracing the panel edges and conduits 6 of circular or rectangular crosssection for electric wiring &c. are formed on the retaining member. They may be open on one side and provided with a removable cover, and may be sub-divided, and associated with junctionboxes accessible from either side of the ceiling.
Patent GB-595350-A (GB)
Title: Improvements in the production of protective films and fabrics and articles made therefrom
IPC: C08L27/00
Filed: 1942-03-14
Abstract: A fabricated article or a mould or former is coated by spraying, dipping, or brushing with alternate layers of polyisobutene and of rubber, synthetic rubber, or rubber-like composition, e.g., a polyisobutene layer may be enclosed between two layers of rubber. The rubber may be vulcanised before or after association with the polyisobutene.  Both materials may be applied as aqueous dispersions or organic solvent solutions.  The composite film or coating resists penetration by mustard gas and other noxious liquids, gases, and vapours.ALSO:A film resistant to penetration by mustard gas and other noxious liquids, gases and vapours has alternate layers of isobutene and of rubber, synthetic rubber or rubber-like composition, e.g. a polyisobutene layer between two rubber layers. The rubber may be vulcanized before or after association with the polyisobutene.  The film may be built up on a former or mould by spraying, dipping or brushing successively with the two materials as aqueous dispersions or organic solvent solutions.
Patent GB-338076-A (GB)
Title: Improvements in or relating to screw-piles and the like
IPC: E02D5/56
Filed: 1930-01-31
Abstract: 338,076. Prudon, C. Jan. 31, 1930. Piles.-In a screw or like pile of the kind having one or more screws or discs distributed along its length, the supplementary screws c<1> are attached to tubes d which are fitted to the pile proper a after it has been sunk.
Patent GB-568507-A (GB)
Title: Improvements in or relating to polarizing viewing visors
IPC: G02B5/30
Filed: 1943-03-03
Abstract: 568,507. Polarizing - apparatus. INTERNATIONAL POLAROID CORPORATION. March 3, 1943, No. 3502. Convention date, Aug. 26, 1942. [Class 97 (i)] [Also in Group XXXII] An anti-glare light-polarizing visor or screen for a vehicle is adapted to be mounted so that it can be tipped to maintain its polarizing axis perpendicular to that of the light to be dimmed when the vehicles are relatively tilted, and comprises one or more small portions differing in polarization characteristics from those of the main area in such a way as to indicate the direction in which the screen should be tipped. In the form shown the screen 12 is pivotally mounted at 18 and comprises two supplementary portions 22, 24 the polarizing axes 25, 26 of which are respectively at greater and lesser inclinations than the axis 15 of the main portion. When the portions 22, 24 appear unequally illuminated by the light to be dimmed the screen is tilted downwardly at the side towards which the darker of the two lies until equality of illumination is restored, when the polarizing axis 15 will be perpendicular to that of the light. In an alternative construction, the areas 22, 24 are formed by portions of polarizing or half-wave retardation material superposed on the main polarizing sheet, or on the outer surface of one of a pair of glass plates between which it is bonded. In place of the two areas 22, 24 a single supplementary area may be used, which appears lighter or darker in relation to the main portion of the screen according to the direction in which the screen should be tipped. In a modification, the supplementary area may be formed by sheets of birefringent material superposed on the polarizing material so as to produce a colouration which changes to indicate the direction in which the screen should be tipped.