baber/WOPTO huggingface dataset:
Patent GB-391469-A (GB)
Title: Improvements in means for effecting volume control in wireless apparatus
IPC: H03G3/16
Filed: 1931-09-23
Abstract: 391,469. Valve circuits for wireless reception. PARAGON RUBBER MANUFACTURING CO., Ltd., 12, Norfolk Street, Strand, and ATKINS, H. C., 335, Princes Gardens, Acton, both in London. Sept. 23, 1931, No. 26559 [Class 40 (v).] A volume control for wireless apparatus comprises a potentiometer a, one end of which is connected to the reaction coil b and the other to the aerial c, the slider being connected to the cathode circuit so that the device functions as two separate resistances. In an alternative arrangement, described in the Provisional Specification, one resistance may be in series with the reaction coil while the other may serve as a biasing resistance for a high-frequency valve.
Patent GB-837809-A (GB)
Title: An improved split flap arrangement in aircraft
Inventor: BIRD RONALD EDWARD
IPC: H03K7/08
Filed: 1956-08-31
Abstract: 837,809. Aircraft split flaps. AUSTER AIRCRAFT Ltd. Aug. 28, 1957 [Aug. 31, 1956], No. 26611/56. Class 4. An aircraft split flap arrangement comprises a flap hinged near its leading edge to the wing and having its trailing edge part formed as an auxiliary flap, and means for causing the auxiliary flap to move through a greater angle than the main flap, at least during the final stages of downward movement and initial stages of upward movement. The Figure shows a split flap 12 hinged at 13 to the trailing edge of a wing 10 and normally nested in a cavity 11 in the under surface of the wing. The flap is adjustable by a jack 14 acting between the wing and a lever 15 on a structural part 16 of the flap. The rear part of the flap 12b is pivoted to the main part 12a at 17, and has a depending lug 18 connected to the wing by a tie 20, so that during the initial downward movement of the flap, e.g. as far as the optimum lift/ drag ratio position, the two parts thereof remain substantially aligned, but during subsequent movement, the auxiliary part 12b turns through a greater angle than the main part 12a to a high drag position. The structural member 16 may be common to both port and starboard flaps. The rear part 12b of the flap may extend over any part of the span of the flap, and a tie 20 may be provided at one or both ends of the rear part 12b. The gaps between the wing and flap and between the two parts of the flap may be sealed by flexible strips.
Patent GB-227224-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J21/36
Filed: 1923-10-24
Abstract: 227,224. Wade, H., (Mills Novelty Co.). Oct. 24, 1923. Thermionic amplifiers and detectors.-In a regenerative amplifying system having a 4-electrode valve, the input circuit, consisting of a variable inductance 31 and condenser 37, is connected through a condenser 33 with one grid 25 and the cathode 22, and the other grid 25<a> is connected through a condenser 45, shunted by a high resistance, with the anode 16, which is connected through a receiver 42 and a battery 40 with the cathode.
Patent GB-1234811-A (GB)
Title: Tablet dispenser
Inventor: LILJEHOLM STEN OVE
IPC: B65D83/04
Filed: 1968-06-04
Abstract: 1,234,811. Tablet dispenser. BOFORS A.B. 4 June, 1968 [27 Dec., 1967], No. 26620/68. Heading B8P. Tablets 7 from a detachable magazine 6 move through a rectangular section shoot 18 and are engaged by the notch 19 in a spring-loaded slide 14, which is reciprocated to dispense the tablets singly. The dimensions of the shoot 18 are related by a formula to the radius r and height h of the tablets, the narrower side B of the rectangular section being given by:- and the larger side D being given by:-
Patent GB-1495155-A (GB)
Title: Paperboard
IPC: D21H27/30
Filed: 1974-12-03
Abstract: 1495155 Paperboard COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANISATION 3 Dec 1974 [10 Dec 1973 9 Sent 19741 26634/77 Divided out of 1495154 Heading D2B A multi-ply paperboard comprises a nlurality of superposed paper plies wherein. between the outermost ply at one side and the next adjacent ply, there is a layer comprising clav particles and starch, the clay particles being distributed evenly thoughout the layer in an amount from 5 to 60 gm/ m <SP>2</SP>. The paperboard may be made by the method of Parent Specification.
Patent GB-1309565-A (GB)
Title: Elastomers
IPC: C08F4/60
Filed: 1970-06-02
Abstract: 1309565 Terpolymers and tetrapolymers containing functional monomers E I DU PONT DE NEMOURS & CO 2 June 1970 [2 June 1969] 26645/70 Heading C3P Copolymers of (1) ethylene, (2) a C 3-18  alpha olefin, (3) a non-conjugated diene having only one polymerizable double bond, and (4) an unsaturated functional monomer of the formula wherein X is OR, -NR 2 , -O-CO-CR 3 , -O-CO-CF 3 , -CO-R, F, Br or Cl; Y is -COOR, -CO-NR 2 , -CN, -SO 2 Cl, or where R is hydrogen or a C 1-18  alkyl, aryl or cycloalkyl group; Z is either X or Y; T is hydrogen, -OH, halogen or a C 1-18  alkyl or alkoxy group; m an integer from 2-20; and n is zero or an integer from 1-20: and copolymers of (1) ethylene, (2) a C 3-18  alpha olefin, and (3) an unsaturated functional monomer of the formula wherein n, m and R are as defined above; R 1  is R or OR; A is -OH, -NH 2 , or -COR; and B is -OH, -NH 2  or -SO 2 Cl; are prepared by contacting the monomers in an inert solvent at - 20 to +125‹ C. and a pressure of up to 10,000 p.s.i.g. in the presence of: (1) a vanadium compound in which the vanadium is in an oxidation state of at least +3; (2) an aluminium alkyl or -aryl or an aryl- or alkyl aluminium chloride or bromide; (3) a catalyst reactivator which is an organic compound having at least one carbon atom substituted by 3 chlorine or bromine atoms, the initial molar concn. of (2) being at least equal to that of the oxygen- and nitrogen-containing functional groups of the monomer, and the initial molar concn. of (3) being at least equal to that of (1). The preferred C 3-18  alpha olefin and non-conjugated dienes are propylene and 1,4-hexadiene respectively, and the preferred unsaturated functional monomers are: 2 - benzoyl - 5 - norbornene, 2 - trifluoroacetylmethyl - 5 - norbornene, 2 - hydroxy - 5 - norbornene, 2 - aminomethyl - 5 - norbornene, 2 - allylphenol, 2 - methoxy - 4 - allylphenol, 2 - cyano - 5 - norbornene, 5 - norbornene - 2- acetic acid, allyl sulfonyl chloride, 2-hydroxymethyl - 5 - norbornene, 5 - hexene - 1 - ol, 10-undecanoic acid, and 4-vinylpyridine.
Patent GB-386369-A (GB)
Title: Improvements in or relating to photo-electric cells and their uses
IPC: H01J40/04
Filed: 1931-09-25
Abstract: 386,369. Photo-electric cells. BARSTIES, W., 4, Luneburgerstrasse, Berlin. Sept. 25, 1931, No. 26818. [Class 39 (i).] A gas-filled cell, particularly for use in reproducing photographic sound records, has electrodes formed or arranged so that a highly non-uniform field of great density is produced at the anode, together with an unstable ionization, which raises the power of the cell and is completely controllable by variations of light with the highest potentials below the spark potential, without permitting a disturbing glow discharge. The cell may be used without a voltage amplifier. The ionization may be visible as a glow on the anode, and the glow may excite a gas of lower excitation potential ; for this purpose a mixture of helium and neon may be used as a filling. The non-uniform field is produced by forming the anodes of fine wires or strips of small surface. The cathode may be of calcium, calcium alloys, tellurium, selenium compounds, tellurium-selenium compounds, thallium compounds, or metal sulphides. As shown in Fig. 1, the cell has two anodes 15, 17 each consisting of a strip with the narrow edge directed towards the cathode 19. Light is projected from a lamp 1 through lens 5 and a sound film 9 on to the cathode. The anodes are connected through a condenser 25 with the grid. 29 of a power amplifier 39. The record on the film may be (a) of varying density and of uniform width, (b) of varying width or (c) an oscillating light curve on a dark background, or the reverse. The anodes 17 may be arranged obliquely to the cathode 19 as shown in Fig. 5, for use with records of types (b) and (c), the resistance of the discharge paths such as a-b, c-d, e-f, varying with the amplitude of the deflection corresponding with the curve on the record. A further variation in the resistance of the anode circuit may be effected by forming the anode as a resistance of the same order as that of the discharge ; in this case the electrodes may be arranged parallel with one another. In the cell shown in Fig. 8, variations in the discharge produce variations in current in a circuit containing auxiliary electrodes 53, 55, one or both of which may form a resistance. Specification 370,967 is referred to.
Patent GB-640577-A (GB)
Title: Improvements relating to the production of iridium
IPC: C22B11/00
Filed: 1947-10-06
Abstract: Ammonium iridichloride is dissolved in water in the presence of a reducing agent to give a solution of ammonium iridochloride, and impurities are removed therefrom by fractional precipitation with ammonium or alkali metal (sodium) sulphide, hydrosulphide, polysulphide or thiosulphate.  The precipitating agent, particularly ammonium sulphide, may conveniently constitute the reducing agent, although any other, e.g. sodium nitrite or ammonium or alkali formate, may be employed.  After addition of the precipitating agent, the solution is heated to 70 DEG  C. or above, and the precipitate then separated, this sequence being repeated many times when a very pure product is required. Examples describe an intermediate isolation of ammonium iridichloride by oxidation with nitric acid followed by the addition of ammonium chloride.  If much platinum is present in the material to be purified it should be first removed by a known method.  Ammonium iridichloride finally isolated as above may be reduced to metallic iridium (see Group II).  A statement of the p art refers to the purification of H3(IrCl6) or Na3(IrCl6) by saturating an acidified solution thereof with hydrogen sulphide for a long period.ALSO:Iridium, which may be of spectrographic purity, is obtained by treating purified ammonium iridichloride (see Group III) with hydrogen in a covered silica tray at 700 DEG C, treating the cooled material with hydrofluoric acid to remove silica, then successively with dilute aqua regia and dilute nitric acid and finally igniting at 500 DEG -600 DEG C in a hydrogen atmosphere.
Patent GB-210485-A (GB)
Title: Improvements in or relating to tennis racquets and the like
IPC: A63B49/02
Filed: 1922-10-05
Abstract: 210,485. Gower, F. W., Owen, H. J., and Nash, R. J. Oct. 5, 1922. Rackets.-An all-metal tennis racket or the like has a frame and handle formed by bending a single strip of rectangular, flat or equivalent solid section bar to a bow formation and directing and fastening the extremities in parrallel relation to constitute the handle, a metal spacing-piece immovably and permanently attached across the bow at its junction with the handle, and a wire striking-face engaged with apertures in both the bow and the spacing-piece. As shown in Figs. 1 and 3, an aluminium strip of rectangular section is bent to form the frame 1 and handle portions 2. The handle portions are connected by bridging-pieces 8, 9 riveted thereto, and the handle is completed by metal channel members 10 and a cap 11, with the addition of an exterior binding. A metal spacing-piece 4 is riveted to the frame and partly supports the striking-face which may consist of a rustless steel or twisted strand wire or of spirally-wound or crinkled wire. Rubber strip or tubing may be threaded through the wire striking-face to deaden the sound of impact. The transverse measurement of the strip 1 decreases towards the head 3 of the racket. The metallic striking-face may be tightened by planishing the frame mechanically or manually. Specification 185,275 is referred to.
Patent GB-1140952-A (GB)
Title: Hydrogen permeable membrane and hydrogen permeating assembly
IPC: B01D53/22
Filed: 1966-06-16
Abstract: 1,140,952. Making filters; stamping. JAPAN GAS-CHEMICAL CO. Inc. 16 June, 1966 [18 June, 1965; 13 Sept., 1965], No. 26893/66. Headings B3A and B3Q. [Also in Division B1] 0À005-0À3 mm. thick palladium or palladium alloy diffusion membranes for the separation and purification of hydrogen, having a dimpled configuration (see Fig. 2A, not shown) so that they exhibit a wavy cross-section in all directions, are prepared from flat sheets by hydraulic pressure deformation of the sheets on to a plain dutch weave wire gauze of 20-200 mesh/ inch. As shown, lower matrix 108 of a suitable stamping apparatus comprises a plain dutch weave wire gauze supported in member 107; plain palladium or alloy membrane 115 is fitted into groove 109 and the stamping members then bolted together, the membrane being held in place by neoprene packing 116. A pressure of up to 500 kg./cm.<SP>2</SP> is then applied by pump 112 through inlet 102 for the necessary length of time, e.g. 5 minutes, after which pressure is released and the stamped membrane removed.
Patent GB-895911-A (GB)
Title: An improved seat bottom
Inventor: THOMPSON STANLEY HOWARD ADCOCK
IPC: A47C7/18
Filed: 1957-08-27
Abstract: 895,911. Seat cushions &c. TAN-SAD CHAIR CO. (1931) Ltd. Aug. 25, 1958 [Aug. 27, 1957], No. 26951/57. Class 52(4) A seat cushion has a sheet metal base a, with a peripheral channel a<SP>1</SP>, upon which is placed a foam rubber seat b shaped to accommodate the channel a<SP>1</SP> and a leathercloth or like covering c is placed on the pad and its peripheral part b<SP>1</SP> tucked into channel a<SP>1</SP> and secured by a hard rubber ring d forced into the channel under pressure. The ring d may be replaced by a metallic coil spring.
Patent GB-690759-A (GB)
Title: Improvements in the cooling of air
IPC: F28C3/14
Filed: 1950-11-06
Abstract: 690,759. Cooling air by direct contact with cold solids. UNION CARBIDE & CARBON CORPORATION. Nov. 6,1940 [Nov. 30,1949; Nov. 30, 1949], No. 27007/50. Class 64 (i) Air is cooled, preparatory to its low temperature rectification, by being passed through a previously cooled stationary bed of pellets of stone or metal or both, having diameters between three-sixteenths and five-eighths of an inch. The pellets may-be beach pebbles or aluminium, iron or other metal pellets. Aluminium pellets may be hollow. Alternate layers of stone pellets and of iron pellets, aluminium pellets, or both, may be used. The pellets may be coated with a non-oxidising lubricant, e.g. graphite, molybdenum disulphide, tricresyl phosphate, or liquid polymers of dimethylsilicone or chlorotrifluoroethylene.
Patent GB-806122-A (GB)
Title: Improvements in indicator lights
IPC: F21S8/00
Filed: 1954-09-17
Abstract: 806,122. Indicator lights. MEAKIN, Ltd., H.S.B., and MEAKIN, H.S.B. Sept. 19, 1955 [Sept. 17, 1954], No. 27012/54. Classes 75(2) and 75(4) In the indicator light described and classified in Specification 720,171 the lighttransmitting component or plug is replaced by a plug 25 having at the observation end an internally directed reflection surface such as the conical surface 27, to reflect the light laterally through the sides of the plug. The surface may be such as to reflect the light uniformly about the component as is the case with the surface 27 or in one or more predetermined directions in which case the end of the plug would be formed with one or more plane faces at an angle to the axis of the plug. The plug may be of transparent or translucent plastic. The generatrix of the cone 27 may be curved.
Patent GB-693382-A (GB)
Title: Improvements in connection with the delivery of the doffed packages in bobbin-winding frames
IPC: B65H67/06
Filed: 1950-11-06
Abstract: 693,382. Winding yarn. SCHARER, K. J., [trading as MASCHINENFABRIK SCHARER]. Nov. 6, 1950 [May 24, 1950], No. 27037/50. Classes 120(ii) and 120 (iii) A multiple-unit bobbin-winding frame, including a conveyer 4, common to its winding units, for delivery of the packages as they are automatically doffed, is characterised by a catching device 6, associated with each unit B, adapted in normal position to receive and temporarily retain a doffed package, pending operation of the device to another position, when it delivers the package to the conveyer 4, with control means for operating the devices 6 periodically and in predetermined sequence so to prevent delivery to any particular part of the conveyer from more than one device. The control device preferably comprises a shaft 17 having thereon cam discs 15, staggered with respect to each other, the discs rocking the devices 6, which are pivoted at 8 and rest thereon, to deliver the packages between the guide walls 22, 23 to the conveyer 4.
Patent GB-296578-A (GB)
Title: Improvements relating to the manufacture of containers or other articles
IPC: H01M2/02
Filed: 1927-10-12
Abstract: 296,578. Bailleux, A. J. M., and Hill, A., F. Oct,. 12, 1927. Cells. -Accumulator containers of cast vulcanizable material such as ebonite are made with double walls 4, 5 connected by partitions 3 so as to form cells which may be left empty or filled with cork &c., the whole being vulcanized to unite the parts and obtain an article which is both light and strong.
Patent GB-1002223-A (GB)
Title: Improvements in electrical plug-and-socket connections particularly for time switches
Inventor: PAYNE LESLIE GEORGE MOUNTJOY
IPC: H01R13/193
Filed: 1963-07-10
Abstract: 1,002,223. Two-part couplings. HORSTMANN GEAR CO. Ltd. May 26, 1964 [July 10, 1963], No. 27306/63. Heading H2E. An electric plug and socket connection including a brass or other metal block 1, comprises a socket part 2 containing a socket hole 3 and a main body 4 integrally extending from the socket part and containing a first slot 8 which cuts into the socket hole 3. A second slot 12 is formed in the main body 4 together with a bore 13 to provide a clamping tongue 14 in combination with a bore 15 so that when a screw-threaded clamping pin 16 is inserted and rotated in the bore 15 the clamping tongue 14 is caused to bend which tightens the socket on to a plug 11. Bore 21 receives a connecting wire which is secured in position by clamping screws in bores 23. The plug and socket can be mounted in the insulating casing of a time switch (Figs. 6 and 7, not shown) and the direction of the plug-in operation may be vertical, horizontal as shown, or inclined to the vertical.
Patent GB-750022-A (GB)
Title: Improvements in or relating to attachment fittings for containers
Inventor: MARTIN ERHARD
IPC: B64D37/00
Filed: 1953-10-06
Abstract: 750,022. Tank fittings. DUNLOP RUBBER CO., Ltd. Sept. 23, 1954 [Oct. 6, 1953], No. 27363/53. Class 69 (1). An attachment fitting for a container such as a flexible fuel tank for aircraft comprises a body portion 2 of rubbery material, a lip 3 extending outwardly therefrom and adapted to be secured to the edge of an aperture in the container, a reinforcing member 4 embedded in the body portion 2, and a cord or cord-like reinforcement 8 disposed within the member 4 and extending outwardly into the lip. Radial holes 6 extend through the body 4 and an annular groove 7 joins their inner ends, so that the fitting may be made by locating the member 4 on distance pieces in a mould, threading the cord 8 continuously through the holes 6, and looping it round pegs adjacent the periphery of the mould and trimming off the looped ends after moulding. Studs 5 for attaching a gauge or the like have their heads 9 anchored in the member 4.
Patent GB-714477-A (GB)
Title: Accelerator tube for magnetic induction accelerators
IPC: H05H7/14
Filed: 1952-10-31
Abstract: 714,477. Magnetic induction accelerators. AKT.- GES. BROWN, BOVERI, & CIE. Oct. 31, 1952 [Nov. 16, 1951], No. 27408/52..Class 39(1) A betatron or betatron-synchrotron in which the inner wall of the acceleration tube is provided with a conductive coating to prevent wall-charging, the conductivity of the coating being sufficiently low to limit eddy currents, is provided also with a conductive coating or layer on the outer wall of the acceleration tube. This outer layer is also of low conductivity to limit eddy currents and it may be subdivided. It may be formed by a flat tape of resistance material which is wound spirally around the tube with spaces between adjacent turns. The purpose of the outer layer is to provide capacitance with any insulated areas formed in the inner coating due for example to electron bombardment, and so to reduce potential changes due to the charging of these insulated areas.
Patent GB-800820-A (GB)
Title: Improvements in or relating to the joining of plastic materials by electric resistance heating
IPC: B29C65/34
Filed: 1955-09-27
Abstract: 800,820. Heating plastics by resistors. GRUBER, H. Sent. 27, 1955 [Sept. 28, 1954; Oct. 6, 1954], No. 27423/55. Class 39(3) [Also in Groups VIII and XXII] In welding together two pieces of plastic especially rubber or thermoplastic sheets 7, 8 by placing a metal resistance 6 between the meeting surfaces and pressing them together so that on passage of current the surfaces fuse together and embed the resistance 6, the latter is formed at the parts adjacent the edges of the plastic sheets with terminal pieces 12 of enlarged cross section, on to which cool air is blown to prevent over-heating of the resistance exterior to the plastic sheets. The resistance may be one or more wires, a metal network or a metal band with numerous triangular apertures. The resistance may be iron coated with a material e.g. brass or zinc having a better affinity for the plastic (P.V.C.) than has the metal, and may be used in making bags, mats, flexible tubes, shoes or zip-fasteners.
Patent GB-331137-A (GB)
Title: Speed gear lock for gate change of motor cars for prevention of theft
IPC: B60R25/00
Filed: 1929-09-10
Abstract: 331,137. Garsia, W. de la P. Sept. 10, 1929. Guarding against unauthorized use.-A forked plate c is hinged along one side at b to the gate of the gear lever and is adapted to be passed over the lever when in neutral and locked by means of a padlock j, the rod h of which passes through holes e<2>, f<2>, in the plate. A strengthening tube k may be placed in the gap of the fork. Specification 136,977 is referred to.
Patent GB-216046-A (GB)
Title: Improvements in bed-cradles
IPC: A47C21/02
Filed: 1923-11-01
Abstract: 216,046. Surman, A. F. Nov. 1, 1923. Bed-tables.-A bed-cradle of the kind adapted to rest upon the mattress, is adjustable in length, width or height or two or more of these dimensions, the adjustable members being either flat bars A sliding in members B of channel form or tubes which slide in one another. When the top of the bed-cradle is made horizontal, a tray may be placed upon the bed clothes to serve as a bedtable.
Patent GB-535480-A (GB)
Title: Improvements in or relating to objectives suitable for photographic and like purposes
IPC: G02B9/12
Filed: 1939-10-09
Abstract: 535,480. Lenses. HASSELKUS, J. W., and COOK, G. H. Oct. 9, 1939, No. 27521. [Class 97 (i)] In a photographic &c. objective comprising two compound converging components I II, IV V spaced from a middle bi-concave component III, the elements I, V being bi-convex, the element I has a high refractive index and medium dispersion, the element II has a lower refractive index and a higher dispersion, the difference of the refractive indices of elements I and II being not greater than about 0.05, the element V has a high refractive index and medium dispersion, the element IV has a lower refractive index and substantially the same dispersion, the difference between the refractive indices of elements IV and V exceeding 0.10, and the refractive indices of elements I and V are not less than about 1.64. A diaphragm may be disposed in either air space. Optical data for two examples are included in the Specification.