baber/WOPTO huggingface dataset:
Patent GB-739041-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J17/49
Filed: 1950-05-09
Abstract: 739,041. Display signs. ERICSSON TELEPHONES, Ltd., WILLIAMS, D. J., BACON, R. C., and ACTON, J. R. May 7, 1951 [May 9, 1950], No. 11486/50, Class 3 (2). [Also in Group XL (a)] A gaseous electric discharge tube adapted to display individually the shape of a plurality of different indicia in the form of digits, letters or other symbols such as arrows comprises a plurality of electrodes 1-8b, Fig. 1, arranged in the same plane within the tube and forming between them the indicia to be displayed, e.g. the digits shown in Fig. 3, at least some of the electrodes being shaped and disposed to form constituent parts common to a plurality of indicia and the electrodes being energizable selectively to cause a negative glow to invest the energized electrodes and at least one, 8a, of the electrodes being arranged in non-parallel and non-perpendicular relationship with respect to certain of the other electrodes, one or more of the electrodes, e.g. 5, 8a and 8b shown dotted in Fig. 3, not required to be illuminated for a selected indicia being used as anode. In the construction shown the negative glow inverts at least two of the electrodes in displaying the indicia. The electrodes can be of flat nickel wire or tape clenched to, or of conducting material painted or deposited on, the plate 10 of mica or other insulating material. The portion of each electrode at the rear of the disc 10 is covered with alumina or other insulating material. The layout of electrodes shown in Fig. 4, displays individually a digit or letter. The appropriate electrodes are connected to positive and negative potentials by a multi-position rotary switch, manually operated keys, or combinations of relays and /or selector switches of the type employed in telephone exchange equipment. A plurality of discharge tubes constructed as above described may be arranged in rows and /or columns, and adapted to display a plurality of different messages in rapid succession by employing means whereby a circuit is completed to illuminate a selected plurality of electrodes indicative of a particular letter or digit in some or all of the plurality of discharge tubes.
Patent GB-669199-A (GB)
Title: Improvements in ladles, especially for kitchen use
IPC: A47J43/28
Filed: 1949-04-29
Abstract: 669,199. Ladles. SCHULZ, N. L. G. April 29, 1949. [Dec. 14, 1948] No. 11488/49. Class 128. A ladle, e.g. a kitchen ladle, has a strainer 13 which can be slid along the ladle, e.g. along the stem 8 thereof, or swung sideways, e.g. about a pivot 11 to cover the, bowl 9. The swing of the strainer may be limited by a stop 15 on the stem 12 of the strainer. The strainer may be detachably mounted on the ladle.
Patent GB-1466561-A (GB)
Title: Dispensers for thin flat rigid articles
IPC: B65H3/06
Filed: 1974-02-22
Abstract: 1466561 Separating sheets SHANDON SOUTHERN INSTRUMENTS Ltd 22 Feb 1974 [9 March 1973] 11547/73 Heading B8R Relatively rigid sheets, for instance microscope slides, are separated from the bottom of a pile held in a magazine 2 by a roller 10 rotatable about a substantially horizontal axis and positioned to at least partially support the pile, fixed stop means, e.g. the front wall 8 of the magazine, being adapted to restrain all the sheets but the lowermost and next sheets, and floating stop means, movable in a vertical direction, but not in the direction of sheet separation, e.g. part spherical stops 13 on spring fingers 14, being adapted to engage the leading edge of any sheet moving with the lowermost sheet to prevent double feed. A guide 6 guides the lower sheets of the pile forwards into engagement with a curved end portion (8a), Fig. 2 (not shown), of the wall 8. The side and back walls of the magazine can be tilted to facilitate pile renewal. The roller 10 has rubber tyres 11. A pile weight 9 is provided. Separated sheets are fed by belts 15 on flanged rollers 16.
Patent GB-232421-A (GB)
Title: Improvements in and relating to the manufacture of rubber articles
IPC: D06P3/79
Filed: 1924-05-12
Abstract: 232,421. North British Rubber Co., Ltd., and Martin, W. G. May 12, 1924. Vulcanizing - materials. - Coloured rubber articles assembled from pieces of vulcanizable sheet rubber and vulcanized by the dry heat process are made from sheet containing an accelerator of the thiocarbamate class, containing a metallic or an organic radicle. An example of such accelerators is piperidene pentamethylene dithiocarbamate.
Patent GB-161451-A (GB)
Title: Improvements relating to violins and violas
IPC: G10D1/02
Filed: 1920-04-27
Abstract: 161,451. Fishburn, R. E. April 27, 1920. Violins and violas; chinrests; sound-posts; tail-pieces. -A combined violin and viola having strings C, G, D, A, E has a sound-post 29 of the hollow type immediately beneath the point where the middle string crosses the bridge. The tail-piece 13 is attached by a wire 24 to a pin 25 on a member 26 which carries the chin-rest 27 in a position clear of the belly and slightly to the right of the tail-piece. The belly and back are dished to a greater extent than usual, and a rib 28 is secured below the bass string C. The head 18 is open at the back.
Patent GB-751046-A (GB)
Title: Improvements in or relating to aerials for short electro-magnetic waves
IPC: H01Q13/28
Filed: 1954-04-23
Abstract: 751,046. Aerials. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. April 23, 1954 [April 24, 1953], No. 11856/54. Class 40 (7). A directional aerial comprises a radiating assembly and energizing means, the radiating assembly consisting of or being equivalent to a refractive medium the refractive index of which varies along the direction of radiation according to a law which can be represented as a sinuous curve with a number of alterations. It is explained mathematically that such an aerial has a greater directivity than known aerials in which the refractive index follows a decaying law over a fraction of a cycle. The length of one alternation of the curve referred to above is preferably approximately equal to two wavelengths of the working energization in a vacuum. In a simple embodiment (Fig. 1) the energizing means consists of a waveguide horn c1 which is supplied by a waveguide b1 with energy in an axially symmetrical mode, if necessary through a mode transformer. The radiating assembly consists of an axially symmetrical dielectric member consisting of a unit of four sinuous variations of tapering form as shown. It is not essential for the operation of the system that the unit shall taper. In a preferred form the actual dielectric material of Fig. 1 is replaced by an assembly of disc elements arranged to form an artificial dielectric medium; this is shown in Fig. 3. Both the discs and the central support rod T are of metal and the radius and/or spacing of the discs may be varied to give the requisite variation in apparent reflective index. The rod T may conveniently be mounted on a plug closing the end of the feed line and if the latter is a coaxial the primary element shown in Fig. 6b may be used. This element consists of a rod 8 welded on to the central conductor 6, passing centrally through a hole 7 in the outer 5, and carry a metal plate 8a. This plate is disposed perpendicular to the axis of the line and is semi-circular with a radius of the same order of magnitude as that of the line. A similar plate 9a on a rod 9 welded to the outer 5 is disposed on the opposite side of the line. To solve the problem of energization so that the radiation is in phase in the usual direction, where a large number of alternations of refractive index in the radiating assembly are used, a number of primary elements is placed at intervals along the assembly. Fig. 4 shows a portion of such an arrangement having 3 primary elements of the form shown in Fig. 6b, energized from a coaxial line which forms the central rod of an artificial dielectric assembly of discs. The individual disc-like elements of the artificial dielectric medium may be made of wire grid construction.
Patent GB-806546-A (GB)
Title: Means for drying household textiles and the like
IPC: D06F58/00
Filed: 1956-04-19
Abstract: 806,546. Drying household articles. SVENDSEN, E. D. April 18, 1957 [April 19, 1956], No. 11884/56. Classes 34(1) and 34(2) Apparatus for drying household articles comprises a closable rack 8 detachably secured to an electric heater A. The heater comprises a box having perforate top and bottom walls and enclosing an infra red heating element wound on an insulating frame and a thermostat. A fan may be provided for propelling the heated air which enters the box through its lower perforate wall.
Patent GB-244985-A (GB)
Title: An improved rotary pump for artificial silk spinning
IPC: F04C13/00
Filed: 1925-05-07
Abstract: 244,985. Pensotti, E. May 7, 1925. Apparatus for making filaments comprises a double acting rotary pump in which a pair of eccentrically mounted pistons with a common sliding abutment rotate in cylindrical chambers to force viscous fluid slowly through small holes to make filaments of artificial silk. A removable glass chamber W clamped to the pump is in communication with the main outlet duct, for receiving the bubbles of air which remain in the fluid and rise to the surface on account of the extreme slowness of the flow, and to regulate the delivery of the fluid by eliminating the last oscillations.
Patent GB-474159-A (GB)
Title: Improvements in and relating to the manufacture of carbonates, hydroxides and fluorides of the alkali metals
IPC: C01D1/24
Filed: 1936-04-27
Abstract: Alkali metal fluorides, carbonates or bicarbonates are obtained by treating a complex alkali metal fluoride, e.g. a silico-fluoride, in an aqueous suspension and at elevated temperature, e.g. 100 DEG  C., with an insoluble or difficultly soluble carbonate, at least 2 mols of carbonate being employed for each mol. of complex fluoride. Reactions such as the following occur  (1) Na2SiF6 + 3CaCO3 --> 3CaF2 + Na2CO3 + 2CO2 + SiO2.  (2) K2SiF6 + 2CaCO3 --> 2CaF2 + 2KF + SiO2 + 2CO2.  (3) K2SiF6 + 3CaCO3 + H2O --> 3CaF2 + 2KHCO3 + SiO2 + CO2. The resulting alkali metal carbonates or fluorides can be converted into hydroxides, e.g. by treatment with calcium hydroxide.  The calcium fluoride and silicic acid produced in the process can be reacted with alkali metal chloride and hydrochloric acid to reform the complex fluoride for re-use in the process. After carrying out the process of equation (2) a third molecule of carbonate can be added to the reaction mixture without filtering, the alkali carbonate formed being then separated.  The carbonates of the other alkaline earths, magnesium or lead may be employed instead of calcium carbonate.  When working in accordance with equation (2) the resulting potassium fluoride can be reacted with sodium chloride to produce sodium fluoride which is causticized with lime to produce caustic soda.  This may be converted into carbonate or bicarbonate by means of the carbon dioxide also produced in the process.  The Specification as open to inspection under Sect. 91 comprises also the employment of heavy metal carbonates and also refers to the reaction of potassium fluoride with lead nitrate to produce lead fluoride and potassium nitrate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-544191-A (GB)
Title: Manufacture of azo pigments
IPC: C09B67/22
Filed: 1940-07-24
Abstract: 544,191. Dyes. IMPERIAL CHEMICAL INDUSTRIES, Ltd. (Du Pont de Nemours & Co., E. I.). July 24, 1940, No. 12091. [Class 2 (iii)] The blueness of the shade and the tinctorial strength of the red azo pigment, 3-nitro-4- aminotoluene - 2-naphthol, are improved by effecting the coupling under such conditions that the azo pigment, 3- nitro-4-aminoanisole # 2-naphthol, is present in the coupling medium either during the coupling or immediately thereafter, the molecular proportion of the 3-nitro-4-aminoanisole used constituting from 1 to 40 per cent of the total amount of the two diazo components. In examples, (1) a solution containing tne diazo compounds from 139 parts of 3-nitro-4-aminotoluene and 17 parts of 3-nitro-4-aminoanisole is added to an aqueous suspension of 147 parts of 2-naphthol, the mixture is stirred fcr 15 minutes and the precipitate is filtered off, washed and dried, (2.) to an alkaline solution of 150 parts of 2- naphthol is added a solution of the diazo compound from 139 parts of 3-nitro-4-aminotoluene, followed immediately by a soluticn of the diazo compound from 17 parts of 3-nitro-4- aminoanisole, the mixture is stirred for 15 minutes and the precipitate is filtered off, washed and dried. Specification 517,456, is referred to.
Patent GB-201618-A (GB)
Title: Improvements relating to luggage carriers for velocipedes
IPC: B62J7/04
Filed: 1922-05-01
Abstract: 201,618. Coy, V., and Firmus Co., Ltd. May 1, 1922. Luggage-carriers are resiliently supported at the back or front of a bicycle, tricycle or motor-cycle by stays 6 pivoted at their upper ends to one ene of the carrier and slidably mounted at their lower ends in guides 7 upon clips 8 or upon lugs brazed on, or bolted to, the forks 3. Springs 10, 11 are held between collars 9 and nuts 12 respectively and the guides 7. The other end of the carrier is folded over upon, and forms a hinge-like joint with, a piece of stout wire the bent ends of which are connected by metal strips and are provided with nuts for clamping the wire to the machine frame. In a modification a loop at the lower end of each stay 6 embraces a long bolt which is fastened by a squared bolt to one of the lugs or clips 8 and carries a nut such as 12 at its upper end'. The springs 10, 11 are then held respectively, between the lower and upper ends of the bolt, and the loop. The stays 6 may be supported from the wheel axles. According to the Provisional Specification the hinge-like joint between the carrier and the frame may be made resilient.
Patent GB-255577-A (GB)
Title: Improvements in liquid meters
IPC: B67D7/16
Filed: 1925-05-11
Abstract: 255,577. Carbonaro, M. C. May 11, 1925. Liquid meters.-In a liquid meter comprising two measuring chambers 1, 2, Fig. 1, the filling and emptying of which is controlled by a piston valve 4 or rotary valve 64, Fig. 18, the valve is operated partly by the feeding pressure of the liquid and partly by the pressure of air compressed in auxiliary chambers 23, 24, with or without a supplementary supply of air from an air pump actuated in conjunction with the liquid feeding pump. As a chamber 2 is filled, air passes therefrom to the emptying chamber 1 through a conduit 19, until the latter is closed by the rise of a float 17. Continued filling compresses the air in a chamber 22 and forces it past a ball or float valve 26 into the chamber 24 until the valve closes the connection. The liquid pressure then acts on the partition 5 of the valve 4 and moves it to close the liquid inlet, to the chamber 2, the motion of the valve to open the liquid inlet to the chamber 1 and the outlet of the chamber 2 being completed by the expansion of the air in the chamber 24. In modifications, the auxiliary chambers are formed in the floats adapted to close the conduit 19, as shown in Fig. 15, or are disposed as shown in Fig. 16. The inlet of liquid to the meter is controlled by a valve 13. Fig. 2, operated by the means described in Specification 250,523, so that a predetermined quantity may be delivered. A drain aperture 35 is controlled by the shaft of the indicating pointer 15.
Patent GB-116197-A (GB)
Title: Improvements in and relating to Torpedo Guards.
Inventor: JOHNSON JOHN ERIC
IPC: B63G9/00
Filed: 1917-08-27
Abstract: 116,197. Johnson, J. E. Aug. 27, 1917. Torpedo nets.-The net 10 is yieldingly suspended by chains and springs 12, 13, 15 from athwartship beams 1 which project from the sides of the ship. The beams 1 are secured by adjustable side clamping-jaws 2 gripped to the ship's side by rods 7 with turn-buckle screws 8. The jaws are then secured on the beams by set-screws 5. Each net frame has diagonally arranged braces 11.
Patent GB-1029181-A (GB)
Title: Improvements in xerographic plate and method
IPC: G03G5/02
Filed: 1963-03-28
Abstract: In one embodiment, Fig. 7 (not shown), of a xerographic plate (see Division Hl) a dielectric layer 35 includes an electroluminescent phosphor which is excited from an A.C source 37 during the exposure of photo-conductive layer 31 to the image to be copied, thereby reinforcing exposure of layer 31.
Patent GB-768338-A (GB)
Title: Improvements in or relating to omnidirectional transmitting or receiving aerials
IPC: H01Q21/10
Filed: 1955-04-29
Abstract: 768,338. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd (Svenska Radioaktiebolaget). April 29, 1955, No. 12423/55. Class 40(7) An omnidirectional vertically polarized aerial array comprises a tubular mast 1 around which a plurality of closely spaced tubular elements 2 are arranged concentrically, one end of each element being connected to the mast. The elements are each a quarter wavelength long and pairs of elements are fed by feed lines coupled across the gaps between them. Some or all the elements may be so fed. Preferably all the feeders 3, 4, leading to the feed gaps are of the same length and are joined at the common coupling point 5 of the array. The feeders 3, 4 are arranged inside the mast 1 or against the outer surface thereof. Dielectric material may wholly or partially fill the -spaces between the mast 1 and the tubes 2 so that the internal parallel resonance frequence of the tubes is made equal to their outer series resonance frequency. The tubes may be constructed of perforated material or comprise structures consisting of rods or wires extending between end rings.
Patent GB-397968-A (GB)
Title: Improvements in or relating to advertising devices
IPC: G09F13/00
Filed: 1932-04-30
Abstract: 397,968. Signs. FIELD, T. S., 64, Gleneagle Road, Streatham, London. April 30, 1932, Nos. 12480 and 26663. [Classes 3 (i) and 3 (ii).] An advertising device comprises a mirror 5 in which are reflected letters &c. 11, 12 which with other letters &c. 9, 10 viewed directly make up a complete word &c. The letters &c. 9, 10 are on two or more transparent sheets 6, 7, and bear on their backs other letters &c. for reflection at 11, 12. The letters 9, 10 may be cut-outs when the word &c. is symmetrical in lettering. In the case of a word &c. having an odd number of letters the middle letter 8 is placed on the mirror 5. The mirror 5 and sheets 6, 7 are held in grooves 4, 3, 2 in a base 1, and may be illuminated by light from an internal lamp passing through a sloping panel of frosted' glass. The base may be of cardboard &c. made collapsible by hinges 44, 45, 48, 49, Fig. 4, and' maintained rigid in display position by slots in a hinge 50, connecting the outer members 41, 43, engaging a notch in the middle member 42. The sheets 6, 7 may be of celluloid. Fig. 3 shows a modification in which the transparent sheet 26 is rotatably mounted on rollers 31, 32, one of which is driven by a motor 33 which may move intermittently. Both sheets 26, 27 may rotate, in opposite directions, and in another form the sheets may oscillate.
Patent GB-638412-A (GB)
Title: Improved method of moulding materials
IPC: B29C33/00
Filed: 1946-04-25
Abstract: A composition that is used to form part of a moulded article comprises phenolformaldehyde resin, synthetic or natural gum and a neutral filler.  The gum may be gum lac dissolved in alcohol, or polyvinyl chloride.  The filler may be powdered slate, powdered mica, powdered cardboard or wood powder.ALSO:A mould is formed from 70 per cent kaolin, 10 per cent whiting, 10 per cent casein and 10 per cent tannate of lime (percentages by weight), the whole being crushed together and hydrated.  Then the mould is lined with a sheet of synthetic material which has been obtained by drying in the free air at a temperature below 15 DEG  C. a mixture of phenol-formaldehyde resin and 10 to 40 per cent by weight (based on the mixture) of natural or synthetic gum reduced to fine powder in an organic acid. This lining is to form part of the finished article.  The lined mould is then heated for 30 minutes in a heating chamber at 25 DEG  C., removed from the chamber, filled with a mixture of phenol-form-aldehyde resin, synthetic or natural gum and a neutral filler, and returned to the chamber, where it is left for a time sufficient to cure the material and bind together the two parts of the article.  It is then removed from the chamber and, when cool, plunged into an acid bath whereby it is disintegrated.  The composite moulded article is dried and polished.  The synthetic or natural gum may be gum lac dissolved in alcohol, or polyvinyl chloride.  The neutral filler may be powdered slate, powdered mica, powdered cardboard or wood powder.
Patent GB-829408-A (GB)
Title: Electrolytic capacitors
Inventor: HOVEY RALPH JAMES
IPC: H01G9/145
Filed: 1956-04-24
Abstract: 829,408. Electrolytic capacitors. FANSTEEL METALLURGICAL CORPORATION. April 24, 1956, No. 12584/56. Drawings to Specification. Class 37. A polarized, sealed electrolytic capacitor comprises a mineral acid electrolyte, a cathode of a metal substantially insoluble in the electrolyte and an anode of a film-forming metal substantially insoluble in the electrolyte, said electrolyte including ions of a metal which is different from the cathode metal and which plates out preferentially with respect to hydrogen on the cathode. Such a capacitor is stated to be relatively free from ageing effects such as loss of capacitance and increase in series resistance. A typical capacitor may have a sintered tantalum anode, a silver cathode and sulphuric acid electrolyte containing copper sulphate, the exact quantity to prevent evolution of hydrogen being determined empirically in a sample capacitor of each batch. It is stated that tantalum, columbium, vanadium, antimony, bismuth, magnesium or nickel anodes may be used with sulphuric, hydrochloric or phosphoric acid electrolyte and silver, gold, platinum or titanium cathodes. Nitric acid may be used with a platinum cathode. Zinc, cadmium or iron anodes may be used with fuming sulphuric acid. Other metals specified as depolarizers are zinc, nickel or cobalt. The depolarizer may be introduced by electroplating or spraying the cathode, or by dipping the cathode into a suitable solution.
Patent GB-316533-A (GB)
Title: Target-practice testing device
IPC: F41G3/26
Filed: 1928-04-30
Abstract: 316,533. Jarzabkiewicz, R., and Wojdatt, E. April 30, 1928. Teaching small arm shooting and gunnery. - Relates to apparatus in which, when a fire arm is discharged the gases from the barrel serve to oper ate a needle to mark a sub-target, and consists of an arrangement whereby the gases. are made to pass out laterally from the barrel to the needle-operating device without any mechanism projecting into or across the bore of the firearm, this enabling the apparatus to be used withlive as well as with blank ammunition. As shown, a gas chamber 1, to be fitted to the muzzle of a machine gun, has an axial hole 2 for the passage of the bullet, lateral holes 3 for the partial escape of the, gases from the barrel, and a pipe 4 for leading part of these gases to a cylinder 6 containing a piston 12. The gases drive this piston against a spring 15 and then escape through outlets 10. At the end of the piston rod 14 there is a needle 16 which faces a concave sub-target 17 and marks the same when the piston is operated by the gases.