baber/WOPTO huggingface dataset:
Patent GB-386477-A (GB)
Title: Improvements in or relating to loud speakers
IPC: H04R7/14
Filed: 1932-03-17
Abstract: 386,477. Diaphragms. MARCONI'S S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Radio Corporation of America ; 570, Lexington Avenue, New York, U.S.A.) March 17, 1932, No. 8000. [Class 40 (iv).] A diaphragm for a hornless loud-speaker comprises a number of sections 3, 4 interconnected by compliant coupling means in the form of shallow corrugations 5, the rigidity of which is designed so that both sections vibrate as a whole for low frequencies whilst at higher frequencies the section 3 alone vibrates. The actuating means, which is shown as a moving coil 2, is connected to the inner section 3 whilst the outer edge of section 4 is connected to the frame 6 by the compliant coupling 7. Modifications are described in which the diaphragm is composed of a number of flat sections or of more than two frusto-conical sections connected to each other by a single corrugation. Fig. 4 shows a further modification in which the compliant coupling means connecting the diaphragm portions 23, 24 is constituted by radial strips 26 separated by circumferential slots 22 which may, if desired, be closed by a thin strip 27 of leather, paper, rubber, &c. Further, the outer section 24, or, if desired, both sections may be provided with corrugations 28.
Patent GB-213607-A (GB)
Title: Improvements in anchoring devices for airships
IPC: B64F1/14
Filed: 1924-03-29
Abstract: 213,607. Forlanini, E. March 31, 1923, [Convention date]. Void [Published under Sect. 91 of the Act.]. Anchoring.-For anchoring airships in the open on land or water, a girder is fixed at one end to a universal joint or to a buoy and the other end is supported by wheels or floats bearing respectively upon a circular track or upon the water. Figs. 1 and 2 show an airship secured by cords d, e to spring-supported frames f on a girder a which is universally jointed at its front end to a pivot b on the ground. The rear end has a wheel c, or a series of concentric wheels, or a wheeled carriage to which the girder is longitudinally pivoted, running on a circular track g. The girder is therefore capable of tilting laterally when in use but normally this tilting is limited by laterally' placed wheels s, Fig. 2 adapted to be raised and lowered. A wheeled support may be provided at the front end of the girder. The wheel c may be provided with brakes. For use on water, the girder is supported on floats at both ends and may be pivoted thereto about longitudinal pivots. The girder may carry a gas-supply conduit and a gangway for passengers.
Patent GB-740222-A (GB)
Title: Electrical connector arrangement
Inventor: KING RALPH
IPC: H01R4/48
Filed: 1954-03-19
Abstract: 740,222. Couplings. STANDARD TELEPHONES & CABLES, Ltd. March 19, 1954, No. 8106/54. Class 38 (1). The connection between a crystal 2 and waveguide 1 is made by a helical spring 5 which lies in an annular base 6 surrounding an aperture for the crystal and connected to the waveguide, the spring being pressed into contact with the crystal and waveguide by a block 7 moved down by a screw 8. The internal diameter of the spring is slightly less than that of the crystal and the spring may be wound on a ring to prevent its collapse on removal of the crystal 2. The spring may be replaced by a resilient conducting annulus, which is deformed into contact with the waveguide and crystal by the clamping block (Fig. 3, not shown).
Patent GB-703174-A (GB)
Title: An improved apparatus for filtering dust from gases
Inventor: MCKEOWN CHARLES GEORGE
IPC: B01D46/04
Filed: 1951-04-07
Abstract: 703,174. Filtering gases. CONTROLLED HEAT & AIR, Ltd. April 7, 1952 [April 7, 1951], No. 8107/51. Class 8 (2). In a gas filtering apparatus comprising a dustladen gas inlet settling chamber 7 in open communication with a filter bag chamber 8 wherein a plurality of bags 14 are supported in extended position with their interiors open to a source of suction e.g., a fan 13 and provided with shaking means whereby collected dust is removed from the bag exteriors, the settling chamber 7 is open to a plurality of filter bag chambers 8 each having individual bag shaking means and an individual clean gas outlet 10 which is selectively closed by a damper whereby a static depression is automatically established in said selected chamber due to the normal flow through the other filter chamber or chambers. The dampers controlling the outlets 10 together with the filter bag shaking means are operated electrically on the closing of a time switch.
Patent GB-526377-A (GB)
Title: Improvements in or relating to electrical oscillation generators
IPC: H03B5/34
Filed: 1939-03-14
Abstract: 526,377. Valve generating circuits. TELEFUNKEN GES. FœR DRAHTLOSE TELEGRAPHIE. March 14, 1939, No. 8206. Convention date, March 14, 1938. [Class 40 (v)] In a valve generator in which a positivelybiased grid G2 acts as an oscillator anode, the main anode P is connected to the source of positive potential over a resistance W1 such that the D.C. potential on this anode is so much less than the possible A.C. voltage that a rectangular wave-form rich in harmonics is produced. The invention is particularly applicable for use in calibrating the first stage of a superheterodyne receiver having two frequency-changing stages, the second stage being stabilized in frequency. For this purpose, the fundamental oscillation stabilized by crystal Q is taken from grid G2 over circuit K to the second stage and a high harmonic from the anode P is selected by a filter C3, W2 and applied'over lead E to the receiver input.
Patent GB-302095-A (GB)
Title: Apparatus for purifying water and subjecting it to radium emanations
IPC: C02F9/00
Filed: 1928-03-19
Abstract: 302,095. Main, F. L. March 19, 1928. Compositions containing silica, pumice, &c.- Porous filtering partitions and receptacles for radioactive material are made by moulding under pressure a mixture of diatomaceous earth, powdered silica and powdered pumice stone and calcining at a temperature of 2500 F.
Patent GB-558121-A (GB)
Title: Improvements in or relating to apparatus for stripping insulation from insulated wire
IPC: H02G1/12
Filed: 1942-06-17
Abstract: 558,121. Stripping cables. DARGE, R. A. June 17, 1942, No. 8327. [Class 36] A length of insulation is stripped from the end of an electric cable by two co-linear knives which rotate in the same direction to cut the insulation on each side of the core, continued rotation of the knives pulling this length of insulation off the wire. The knives 3, Fig. 1, are mounted on a rotor 1 having a pivoted member 10 acting as a stop for the end of the wire which passes through a guide nozzle 5. In a modification, Fig. 3, the knives 16 are carried by separate arms 15 adjustably secured to a bush 17 pinned to the shaft 2 and pressed apart by a spring 20. A separate adjustable stop 21 is provided and is thin enough to pass between the knives when at a minimum distance apart. The guide nozzle may be changed for different sizes of cable, but the small variations it may have two' grooves 24, Fig. 5, in which are secured springs 25 projecting into the bore 6 of the bush 5. Several strippers may be mounted on one motor-driven shaft.
Patent GB-777253-A (GB)
Title: Manufacture of alkali metal triphosphate and/or pyrophosphate
IPC: C01B25/42
Filed: 1954-03-22
Abstract: Alkali metal triphosphate or pyrophosphate or mixtures thereof are prepared from polyphosphate glasses or polyphosphoric acids by treating the starting material with an alkali metal carbonate and/or hydroxide in the presence of water and spraying the resultant solution into the upper part of a tower heated to a temperature between 300 and 400 so that solid particles of the product are obtained which fall downwards through the tower.  By polyphosphate glass is meant alkali metal ortho, pyro, tri, and metaphosphates having a molar ratio of P2O5 to Na2O between 1 to 0.3 and 1 to 1.3. Such a glass may contain about 10 per cent of pyrophosphate, 30 per cent of metaphosphate and the rest triphosphate.  The polyphosphoric acids are mixtures of tripolyphosphoric and pyrophosphoric acid and which may also contain orthophosphoric and metaphosphoric acids, for example a mixture containing 10 per cent pyrohosphoric acid, 30 per cent metaphosphoric acid and the remainder triphosphoric acid.  The treatment with alkali metal carbonate or hydroxide is preferably effected in the presence of a quantity of water which is from 1/2 to twice the quantity of the starting materials employed and the treatment is suitably effected at 50 to 60 DEG C. to produce a pH between 8 and 12; depending upon the pH triphosphate or pyrophosphate or mixtures thereof are formed. According to examles (1) aqueous sodium carbonate was added to acid sodium polyphosphate glass having a molar ratio of P2O5 to Na2O of 1 to 0.5 at a temperature between 50 and 60 DEG C. to produce a final pH of 9.4 Sodium hydroxide was then added to raise the pH to 11.4 and the resulting solution with a solids content of about 60 per cent was sprayed through a nozzle into the top of an atomizing tower heated to 300 to 400 DEG C. whereby a dry product containing 72 per cent of sodium triphosphate and 24 per cent of sodium pyrophosphate was obtained.  (4) Aqueous sodium carbonate was added at 50 to 60 DEG C. to polyphosphoric acid containing 3.87 per cent of H3PO4, 6.4 per cent of H4P2O7, 47 per cent of H5P3O10 and 34 per cent of (HPO3)x, and 10 per cent of cyclic metaphosphates, to produce a final pH of 9.7.  The solution containing 59 per cent solids was sprayed through a nozzle into an atomizing tower as before and a mixture containing 51 per cent of sodium triphosphate and 48 per cent of sodium pyrophosphate was obtained.  Further exbox 15 and flexible connections 16.  The triphosphate and sodium pyrophosphate in varying proportions.
Patent GB-932534-A (GB)
Title: Coated crystalline alpha-olefin polymer films
IPC: C08J7/048
Filed: 1962-03-05
Abstract: Coffee beans or ground coffee and other substances which deteriorate easily when exposed to air, are preserved by wrapping in a film of crystalline alpha-olefin polymer coated with a vinylidene chloride-acrylonitrile and an isocyanate adhesive. The film which may be of polypropylene, may be obtained by extrusion, and may be stretched in one or two directions, or may be treated thermally, by a continuous non-perforating electric discharge, or by a chemical agent, e.g. halogenating agents such as chlorine, sulphonating agents such as sulphur trioxide, or oleum, chlorosulphonic acid, and oxidizing agents such as potassium chromate or sulphuric and nitric acids, prior to coating.  The adhesive may be a condensation product of toluene diisocyanate with hexanetriol.  The coating can be applied in the form of a solution or dispersion in water or organic solvent.
Patent GB-1024140-A (GB)
Title: Metal-cased refractory brick
IPC: F27D1/08
Filed: 1965-02-26
Abstract: 1,024,140. Metal-cased refractory bricks. HARBISON - WALKER REFRACTORIES CO. Feb. 26, 1965 [March 6, 1964], No. 8406/65. Heading F4B. A refractory brick 10 has end faces 13, 14 and an oxidizable metal casing 12, two adjacent sides 17, 20 of which are provided with expansion crimps 15, 16, 18, 19. Fig. 2 (not shown), shows a wall made from these bricks, the crimped faces contacting the plane faces of adjacent bricks. After firing the crimps 19 at the hot end 26 are compressed, Fig. 3 (not shown). A cavity 60 may be moulded into the bricks to provide a means of hanging the bricks for a furnace roof, Fig. 6 (not shown). The material used for the brick may be 70% magnesia and 30% chrome ore.
Patent GB-1445067-A (GB)
Title: Modular connection assembly jfor electrical installations
IPC: H01R13/514
Filed: 1975-02-28
Abstract: 1445067 Terminal blocks HEGO ELECTRIC GmbH 28 Feb 1975 8427/75 Heading H2E A modulator connection assembly comprises two spaced parallel locating members 8 each with a row of uniformly spaced apertures 3 and insulating modular plates 1 stacked face-to-face with one another and between and perpendicular to the members, at least some of the plates having a projection 2 engaging a respective aperture 3, the thickness of each plate or an integral multiple thereof being less than the spacing of the apertures or an integral multiple thereof, at least some of the plates comprising a central space across which terminal pins 9 extend and projections 7 and matching recesses 6 for interengagement of adjacent plates. Each plate 1 has grooves 4 seating the terminal pins 9, the latter being engaged by projections 5 of the adjacent plate; groups of pins 9 are interconnected by connectors 11. The pins are connected to conductors 15 held by a gland 10 located in a channel 17. Two side-by-side stacks of plates may be located between two members (8, Fig. 5, not shown) adjacent sides of the plates being located by projections (14) and mating recesses. Within a stack there may be included a screening plate (13) or a spacer (16) -the latter being, for example, a plate without  terminal pins.
Patent GB-609623-A (GB)
Title: A method for the manufacture of tubes composed of several superimposed layers
IPC: B29C63/34
Filed: 1946-03-19
Abstract: 609,623. Making compound tubes. LOUVROIL-MONTBARD-AULNOYE. March 19, 1946, No. 8457. Convention date, Nov. 27, 1942. [Class 83 (ii)] A method of manufacturing tubes composed of a plurality of tubular layers engaging one within the other, consists in causing a tubular inner layer to engage within an adjacent tubular outer layer by a drawing operation. An outer tube D, with a cold internal diameter slightly less than the external diameter of an inner tube A, and formed with a slightly enlarged end E terminating in a flange F, is expanded by heat and the part E held in a clamp H. One end of the inner tube A is partially closed and engaged by the head T of a mandrel I by which it is drawn into the tube D. The tube A may be a single tube or one already formed of one or more unit layers.
Patent GB-330639-A (GB)
Title: Improvements in the electrolytic deposition of metal on metal tubes
IPC: C25D7/04
Filed: 1929-03-15
Abstract: 330,639. Stone & Co., Ltd., J., Lambert, W., and Wild, R. W. March 15, 1929. Supporting electrodes; connections.-Tubes a to be plated are supported at a number of points along their length in a frame comprising spaced members b, but are insulated from the frame at these points. Electric connection is made to the tubes at a single point near the middle; the connection may be provided by a central conducting support b<1>. The tubes may be secured in the frame by split collets, d and nuts d<1>, or by inverted split collets e or by swivel clips f. In all except the central support the securing means are of insulating material or are provided with insulated liners g. Flexible internal anodes i under tension are provided. Specifications 299,071 and 309,056 are referred to.
Patent GB-197796-A (GB)
Title: Improvements in railway wagon brakes
IPC: B61H13/02
Filed: 1922-03-24
Abstract: 197,796. Wharton, H. March 24, 1922. Hand actuation. - In a railway wagon brake of the kind in which the hand levers on opposite sides of the wagon are both moved in the same direction (downwardly) to apply the brakes, one lever 1 is directly secured to the rock shaft 4 which actuates the usual push rods 7 connected to the brake blocks and the other lever 8 is mounted freely on the shaft and has an extension 9 connected at 10 to one arm 11 of a bent lever pivoted at 12 to the underframe of the wagon; the other arm 12<a> of the lever being connected by a link to an arm 15 rigidly secured to the rock shaft 4. The connection of the link to the arm 15 may be adjustable. Simultaneous movement of the levers to disengage them from the looking- racks 3a is effected by rods 20 connected to them and to a lever 19 pivoted on a collar 18 loose on the shaft 4.
Patent GB-1169366-A (GB)
Title: Bonding of Dissimilar Materials
Inventor: JERVIS ROY
IPC: C08J5/12
Filed: 1966-02-26
Abstract: 1,169,366. Rubber coated metal surfaces. DUNLOP CO. Ltd. 22 Feb., 1967 [26 Feb.. 1966], No. 8562/66. Heading B2K. [Also in Division C3] A natural rubber composition which comprises sulphur, an organic peroxide and a cobalt salt is bonded to steel, brass or zinc by vulcanizing the composition while it is in contact with the surface of the metal.
Patent GB-703302-A (GB)
Title: Preparation of an erythro propane diol
Filed: 1952-04-03
Abstract: In the process of the parent Specification for the manufacture of DL-erythro-2-o-carboxybenzamido-1-p-nitrophenylpropane-1:3-diol, the initial step of condensing p-nitrobenzaldehyde with a -phthalimidoacetaldehyde to produce 1-(p-nitrophenyl)-1-hydroxy-2-phthalimidopropan -3-al (in the form of an addition product with a -phthalimidoacetaldehyde) is effected in the presence of a caustic alkali.  The condensation may be effected by adding the caustic alkali (preferably as a 2-10N aqueous solution) to a solution of the two reactants in an organic solvent, preferably at 0-10 DEG  C., the addition being desirably stopped when the temperature has risen several degrees in order to avoid the presence of excess alkali which would partially hydrolyse the phthalimido group.  In examples, the condensation is effected in dioxane in the presence of: (1) and (4) caustic soda; (2) lithium hydroxide; (3) caustic potash.
Patent GB-1029544-A (GB)
Title: Surface coating resins derived from unsaturated ethers and carboxylic acids
Inventor: HUNT THOMAS
IPC: C08G59/32
Filed: 1963-03-05
Abstract: A process for making a water-dilutable resin salt comprises addition polymerizing an allyl or methallyl glycidyl ether together with an ester of an a ,b -ethylenically unsaturated aliphatic carboxylic acid to form a copolymer containing from 0.05 to 1.0 epoxide rings per molecule of copolymerized unsaturated ester, esterifying the copolymer with a monohydric aliphatic alcohol containing ethylenic unsaturation in the b ,g -position relative to either the hydroxyl group or to an ether oxygen atom, saponifying the resin so formed to an acid value in the range 10 to 100 milligrams of potassium hydroxide per gram, converting the saponifying resin into the acid form and converting the acid form into the resin salt of a base. The base is preferably a volatile base.
Patent GB-572471-A (GB)
Title: Improvements in and relating to the purification of gases
IPC: C10K1/34
Filed: 1941-07-09
Abstract: 572,471. Gas-purifying materials and processes. BOOTH, N., and JOLLEY, L. J. July 9, 1941, No. 8667. [Class 55 (ii)] The organic sulphur content of a gas containing hydrogen, such as coal gas or water gas, is reduced by passing the gas through a tube heated to 450‹ C. or over, and containing iron deposited on a support by the thermal decomposition of iron carbonyl, and then absorbing the hydrogen sulphide formed. The iron is re-activated by heating first in an oxidising gas such as air, and then in a reducing gas such as hydrogen, water gas, or coal gas, at a temperature of 450‹ C. or over. The gas may first be treated to remove a substantial proportion of its organic sulphur by treatment with gas oil or absorbent carbon.
Patent GB-662867-A (GB)
Title: Improvements relating to gas turbine power plants
Inventor: HODGE JAMES
IPC: F02C3/10
Filed: 1949-03-30
Abstract: 662,867. Gas turbine plant. POWER JETS (RESEARCH & DEVELOPMENT). Ltd. March 16, 1950 [March 30, 1949], No. 8686/49. Class 110(iii) [Also in Group XXXI] A gas turbine plant of the kind having a gas generator set comprising a compressor, a combustion system and a compressor driving turbine and an independently rotatable radial-vane centripetal flow turbine for delivering external power has means, operative when the power turbine is overdriven, to permit the relief of working fluid from the power turbine and means to effect a reverse flow of fluid through the power turbine to produce a braking effect. The plant shown comprises a compressor 1, a combustion chamber 2, a compressordriving turbine 4 and a power turbine 5 of the radial-vane centripetal flow type connected to the propelling wheels 6 of a vehicle. The exhaust of the turbine 5 is led through a heat exchanger 7 for preheating the air supply to the combustion chamber. When the turbine 5 is overdriven from the propelling wheels, its rotor will suck air from its exhaust and deliver it into its inlet volute. To divert this air and the exhaust gas from the turbine 4, a valve system 13, 15, is provided. The valve 13 connects the exhaust gas from the turbine 4 and the air from the turbine 5 to the byepass 14. The valve 15 connects the duct 14 to the heat-exchanger 7 and also prevents the exhaust travelling upstream. If desired, the valve 13 may be replaced by two valves 13, 13a, the former being used for the exhaust gases from the turbine 4 and the latter for the air from the turibne 5. A valve 16 which allows the turbine 5 to suck air from the atmosphere is also provided. These valves are operated by a speed governor 19 operated by the cage of a differential gear 18 interconnecting the two turbines, 4, 5. An interlock connection 19b is provided between the throttle 3 and the governor 19 to allow operation of the latter only when the throttle is in the idling position. In a modification these valves are operated solely by the throttle lever when the latter is moved, in the closing direction, past the idling position. In a further modification, the governor 19 is dispensed with, and a reduction or reversing gear provided between the turbine 5 and the differential gear. In this case, the valves are made to open by the differential turning in a particular direction when the turbine 4 is idling. In another modification, the differential gear is dispensed with and the valves operated by a governor driven by the turbine 5 so long as the throttle is in the idling position.