baber/WOPTO huggingface dataset:
Patent GB-1397028-A (GB)
Title: Method and apparatus for testing video transmission channels as to gain and delay distortions
IPC: H03G3/20
Filed: 1973-03-27
Abstract: 1397028 Testing amplifier gain and delay distortion TEKTRONIX Inc 27 March 1973 [5 April 1972] 14700/73 Heading G1U A wide band amplifier or transmission channel, particularly for colour television, is tested by applying to it a modulated carrier burst as shown in Fig. 4a, and by analyzing the resulting output signal, which may take any of the forms shown in Figs. 4b-4d due to non-linearities in gain and delay, in such a way as to extract both the upper envelope, which should appear like Fig. 8, and the lower base-line envelope, which should appear like Fig. 9a, but which may appear like Fig. 9b or Fig. 9c if non-linearities are present. This analysis is effected by a circuit which comprises a first filter 32, Fig. 1, designed to couple the modulated-carrier Fig. 5 to the secondary of a transformer 37 and to cause the low-frequency modulation to appear across a resistor 40, a fullwave rectifier 42, and two further filters 50, 60 which respectively produce the upper and lower envelopes Fig. 6b and Fig. 7b, of the modulated carrier Fig. 5. However, since the low frequency modulation across resistor 40 is injected into the centre of the secondary winding of transformer 37, the rectifier floats up and down with the low frequency signal and the resulting signals on leads 70 and 90 are the required signals Fig. 8 and Fig. 9, respectively. In a modification, Fig. 10 (not shown) the low frequency signal from the filter 32 is applied to the secondary of the transformer 37 via an attenuator (24) which is automatically adjusted so that the integral of the base line envelope is zero, thereby isolating the phase distortion and allowing it to be measured.
Patent GB-1486232-A (GB)
Title: Sealing compositions
IPC: C08G18/12
Filed: 1974-10-09
Abstract: 1486232 Poly(urethane-ureas) MINNESOTA MINING & MFG CO 9 Oct 1974 14878/77 Divided out of 1486231 Heading C3R A sealing composition comprises a solution in a water-miscible solvent of a mixture (M) of water-miscible NCO-terminated prepolymers (P) of a polyol having a plurality of oxyethylene units, these being prepolymers of MW 850- 1000 and of MW 1250-1500, the average MW of the mixture being 1000-1300. In the example, (P) is in the form of a solution containing 2 prepolymers made by reacting TDI separately with PEGs of MW 600 and 1000, dry acetone, non-ionic surfactant, and water containing 2,4,6 - tri(dimethylaminomethyl)- phenol as catalyst. Leakage in a water-barring or holding structure may be prevented or reduced by placing the composition at the site of the leak, whereupon a foamed hydrophilic poly(urethane-urea) seal is formed by reaction in situ with water. Parent Specification is referred to.
Patent GB-118720-A (GB)
Title: Improvements in Means for the Production and Control of Current for X-ray Tubes.
Inventor: PEARCE GEOFFREY
IPC: H05G1/10
Filed: 1917-10-16
Abstract: 118,720. Pearce, G., and King, F. D. Owen-. Oct. 16, 1917. Drawings to Specification. Transformers.-The metal filament of a Coolidge or like X-ray tube is energized with lowtension current from a main supply through an induction coil, the primary circuit containing a regulating-resistance and a mercury interrupter.
Patent GB-811968-A (GB)
Title: Improvements in or relating to devices for conditioning the exhaust gases of internal combustion engines
Inventor: VACTOR BENJAMIN HENRY VAN
IPC: F01N3/04
Filed: 1957-05-10
Abstract: 811,968. Cooling exhaust. NATIONAL MINE SERVICE CO. May 10, 1957, No. 15005/57. Class 7(2) [Also in Group XII] Curved top portions 18, Figs. 2 and 3, of an I.C. engine exhaust duct 16 form a discharge slot releasing the exhaust gases below water in a chamber A to pass up between plates 19 and be deflected downwards by vanes 21 before passing out through a chamber chimney (not shown). A central vane 20 is provided. The discharge slot narrows towards the entry end of the duct 16 which itself tapers in depth from that end. The chamber A has baffles 25 to prevent surging when 16 tapering in depth towards both ends, vehicle-mounted, and is supplied with water via ports 26, 29 from a chamber B having an inlet controlled by a float valve 27. There is a drain-off cock (not shown) at the lowest point of the duct 16. An initial filler plug 31 and an inspection cock 31 below water level are provided. Modifications. In Fig. 5 (not shown) exhaust gas is fed centrally to a duct the discharge slot being narrowest at the centre. Fig. 8 shows an assymetric arrangemet having a duct 16 of uniform depth and a discharge slot of uniform width, there being a water make-up float valve 27, an exhaust gas outlet 24 and a port 34 through which a deflector 35 directs cooling water into an exhaust pipe 17 supplying a vertical entry portion of the duct 16, the port 34 also preventing drawing back of water into the engine upon stoppage or momentary reversal thereof.
Patent GB-874795-A (GB)
Title: Coil assembly for a mechanical system controlled without contact
IPC: G04C3/027
Filed: 1959-05-01
Abstract: 874,795. Electric motors. JUNGHAUS A.G. GEB. May 1, 1959 [May 3, 1958], No. 15039/59. Class 35. [Also in Group XVIII] In an oscillating or rotary motor, e.g. for a clock, in which the motion is maintained by applying to a driving coil the amplified voltage induced by a permanent magnet in a pick-up coil, spurious oscillations due to coupling between the coils are prevented by arranging a short-circuited winding between them. The driving and pick-up coils are coaxial and may also be concentric as in Fig. 1, side by side as in Fig. 4, or wound together, individual turns lying side by side. The short-circuited winding K may consist of wire or metal sleeves or rings. With concentric coils it may comprise foil or a metal or semi-conductor layer applied by spraying, depositing by evaporation or by coating; with coils arranged side by side a copper or aluminium ring may be interposed. As shown in Fig. 1 the coils are arranged to maintain the oscillations of a permanent magnet P, e.g. on a pendulum, but in Fig. 4 permanent magnets are arranged on two rotor discs for continuous rotation. The amplifier in both cases is a transistor. It is stated that by using material of a suitable temperature coefficient for the short-circuited winding overall temperature compensation may be obtained.
Patent GB-515517-A (GB)
Title: Manufacture of mixed resins for cation exchange
IPC: B01J39/19
Filed: 1938-05-23
Abstract: 515,517. Synthetic resins. I. G. FARBENINDUSTRIE AKT.-GES. May 23, 1938, No. 15307. Convention date, Feb. 8, 1938. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 23, 1938.] [Class 2 (iii)] Resins suitable for cation exchange are prepared by condensing a naphthalene amino-, hydroxy-, or amino-hydroxy-sulphonic acid with formaldehyde or its equivalent together with a compound capable of forming with said aldehyde a solid waterinsoluble resin, e.g., mono- and poly-hydroxybenzenes and their derivatives, urea or thiourea or their derivatives, or initial condensates. There are specified a number of hydroxy-, amino-, and aminohydroxymono-, di-, and tri-sulphonic acids. In examples resorcinol and disodium-1-aminonaphthalene-3:6:8:-trisulphonate or sodium-1:8- dihydroxynaphthalene-3:6-disulphonate are condensed with formaldehyde. Samples have been furnished of products obtained by condensing formaldehyde with resorcinol and sodium - 2-amino-4-hydroxynaphthalene-6:8-disulphonate, sodium-1-amino-8-hydroxynaphthalene- 3:6-disulphonate, or sodium-1-hydroxynaphthalene-3:8-disulphonate, or phenol with sodium-1- hydroxynaphthalene-3:8-disulphonate. According to the Specification as open to inspection under Sect. 91, instead of the naphthalene-sulphonic acids there are used aromatic amino-, hydroxy-, or amino-hydroxy-sulphonic or carboxylic acids in general. There are additionally specified (besides those in the examples) the following acids : 1-amino-benzene-3-sulphonic, -2:4-disulphonic, -2:5-disulphonic, -2-carboxylic and -3-carboxylic acids ; and 1:3-diaminobenzene-2:5- and -4:5-disulphonic acids. In examples: formaldehyde is condensed with resorcinol, with or without dimethylolurea or a urea-formaldehyde initial condensate, and methyl-1:3-dihydroxybenzene- #-sulphonic acid ; resorcinol and cresol-#- sulphonic acid, 3-hydroxybenzene-1-sulphonic acid, or sodium 1-aminobenzene-2:4-disulphonate ; phenol and sodium o- and p-cresolw-sulphonates or salicyclic acid ; or dimethylolurea and 2:4-dihydroxybenzene-1-carboxylic acid. This subject-matter does not appear in the Specification as accepted.
Patent GB-117866-A (GB)
Title: Improvements in Means for Shaping and Serving Ice Cream.
Inventor: PEPIN NAPOLEON
IPC: A23G9/28
Filed: 1917-10-22
Abstract: 117,866. Pepin, N. Oct. 22, 1917. Moulding ice creams.-A device for scooping-up and shaping ice cream so that it will fit an icecream " cone " comprises a bowl or mould A mado in two sections, one of which carries a rotatable V-shaped scraper 8 adapted to loosen the ice cream in the bowl. The scraper 8 is attached to a wheel 11, and is rotated through a half circle by the gearing shown, and a toothed sector 21 on a thumb-piece 23 pivoted at 22 to the shank of the handle of the apparatus. At the end of the half-revolution of the scraper 8, an interrupted gear wheel, or the larger part of the wheel 17, which has a mutilated part 31, engages with a toothed wheel 29, which rotates cranks 27 so that links 28 attached to the two sections of the bowl push them apart, when the ice-cream falls out.
Patent GB-1101141-A (GB)
Title: Weatherproofing of windows and the like
Inventor: WATSON GEORGE
IPC: E06B7/23
Filed: 1964-04-14
Abstract: 1,101,141. Weather seals. HENRY HOPE & SONS Ltd. 11, March, 1965 [14, April, 1964], No. 15325/64. Heading E1J. A weatherstripping of neoprene &c. extruded on to a pair of wires or cords 7 is secured in position around the periphery of a frame or panel 8 by twisting the bared ends of the wires 7 to secure the ends of the strip' together. In a modification a left or right handed screw is inserted into the opposite ends of a bore in the strip and tightened by turning the screw to draw the ends together. In these two cases the ends of the strip are drawn together under tension, but the ends may be stapled together or the wires 7 or other cords may be located in a groove or bore and not secured to the strip, in which case the closed strip is not under tension, but the wires are.
Patent GB-167042-A (GB)
Title: Improvements in agricultural tractors
IPC: B60B35/10
Filed: 1920-06-07
Abstract: 167,042. Darby, S. C. June 7, 1920. Frames, adjustable in width.-An agricultural tractor is provided with means for extending the axles on one or both sides so that the wheels may run on those parts of the land that will become stetch furrows. The front axle b, Fig. 1, is fitted with a forked extension b<1> fixed to the axle, and stiffened by stays f, f<1> connected to a vertical part f<2>. The steering-connection g is also lengthened. To the rear of the tractor is fixed a draw-bar h which carries a bearing e<2> for the extension of the driving-axle e, the bar h being connected to the main frame and front axle by tierods h<3>, h<2>. A brake drum e<3> is provided which serves to connect the extension e<1> to the axle e, and is used for turning at headlands. In a modification in which the tractor is driven by chain gearing from a countershaft, the rear axle structure comprises means for supporting the dead axle and the gearing on the extended side.
Patent GB-1284771-A (GB)
Title: Improvements in electron beam welding apparatus
Inventor: MONCRIEFF DONALD BAYLEY
IPC: H01J37/20
Filed: 1969-03-24
Abstract: 1284771 Electron beam welding apparatus UNITED KINGDOM ATOMIC ENERGY AUTHORITY 14 April 1970 [24 March 1969] 15409/69 Heading HID In an electron beam welding apparatus wherein the work is manipulated inside an evacuated chamber by means of servo motor-generators, each servo motor-generator is surrounded by a vacuum tight casing provided with a vacuum seal on the output shaft and vented to atmosphere through a flexible tube which may carry the leads to the motor. This construction allows the motor to operate in atmospheric air which is desirable especially in the case of direct current motors;
Patent GB-168430-A (GB)
Title: Improvements in the manufacture of incandescent mantles
IPC: F21H1/00
Filed: 1920-06-08
Abstract: 168,430. Thompson, H. S. June 8, 1920. No Patent granted (Sealing fee not paid). Reeds.-In weaving a number of inverted or upright conical or tapered gas mantles, side by side and end to end, warp threads b are caused to approach each other or be crammed at the narrow ends of the mantles by using a contracting and expanding reed, or by raising and lowering, during the weaving, a reed having dents that radiate alternately from the top and bottom.
Patent GB-1382476-A (GB)
Title: Adsorbent carbons
IPC: C01B31/08
Filed: 1972-04-04
Abstract: 1382476 Cigarette filters CALGON CORP 4 April 1972 [7 April 1971] 15456/72 Heading A2C [Also in Division C1] An active carbon of molecular sieve properties has an average carbon tetrachloride number no greater than 2.0, and a surface area of at least 45 am<SP>2</SP>/gm when measured by iodine absorption, and is used as a cigarette filter. It is said to be particularly suitable for menthol cigarettes, being able to remove the harmful constituents from the cigarette smoke whilst permitting the menthol to pass through. (For the method of preparation of the carbon see Division Cl).
Patent GB-1268346-A (GB)
Title: Improvements in solid cleaning compositions
Inventor: LAVIS GERALD GEORGE
IPC: C11D1/04
Filed: 1968-04-01
Abstract: 1,268,346. Cleaning composition. UNION CARBIDE U.K. Ltd. 1 April, 1969 [1 April, 1968], No. 15498/68. Heading C5D. A water-soluble solid cleaning composition useful as additives to windscreen washer units comprises 75-80% by wt. of tetrapotassium pyrophosphate and a small amount of a watersoluble solid tablet lubricant. A preferred composition is in tablet form and contains 75 to 80% of tetrapotassium pyrophosphate (anhydrous), 7-10% by wt. of sodium caprylate, the remainder being water of crystallization and if desired a water-soluble dye. The tablets may be packaged with each tablet sealed between two water-impervious laminates, e.g. aluminium foil coated with polyvinyl chloride.
Patent GB-590548-A (GB)
Title: An improved process for the production of xylene
IPC: C07C15/08
Filed: 1942-11-03
Abstract: Commercially pure xylene is prepared by subjecting a petroleum fraction consisting predominantly of naphthenic type naphtha, boiling between about 240 and 260-270 DEG  F., and rich in dimethyl cyclohexanes to catalytic reforming, separating the product boiling above 270 DEG  F., and fractionating it to obtain a fraction boiling at 278-291 DEG  F.  The reforming process which is defined as a heat treatment at 800-1050 DEG  F. and a pressure up to 500 lbs./sq. in. may be effected in the presence of hydrogen and under such conditions that there is a net production of this gas or at least no consumption.  A naphthenic type naphtha is distilled and an intermediate fraction boiling between 240 and 260-270 DEG  F. separated.  If the final boiling point is 270 DEG  F. ethyl-cyclohexane is included and yields ethylbenzene in the reforming which appears in the product.  This fraction is preheated above 900 DEG  F. and fed with hydrogen to a reactor containing a suitable catalyst at 850-1050, preferably 900-1000 DEG  F., at a pressure up to 500, preferably 50-400 lbs./sq. in.  The catalyst may be alumina in various forms with 1-10 per cent by weight of a Group 6 metal oxide, e.g. molybdenum, chromium or tungsten oxide.  The rate of flow is 0.3 to 3 vols. hydrocarbon per vol. of catalyst per hour, 1000-5000 c. ft. of gas containing between 90 and 30 mols. per cent of hydrogen being used per barrel of oil.  The products are separated into gases which may be recirculated, if desired after washing out hydrocarbons, and liquids which are distilled to separate the portion boiling up to 270 DEG  F. which is removed or mixed with the initial feed.  The fraction boiling above 270 DEG  F. is fractionated to yield an intermediate fraction boiling at 278-291 DEG  F. consisting of xylene.  The catalyst in the reactor is regenerated after 4-6 hrs. or more by passage of hot inert gases containing air or oxygen. Instead of a fixed catalyst, a suspension may be used, if desired using "fluid catalyst" operation as described in Specification 558,879, [Group III].  In an example, a virgin naphtha fraction boiling at 240-273 DEG  F. is treated at 970 DEG  F. and 300 lbs./sq. in. with an alumina-molybdenum oxide catalyst, a feed rate of 0.5 v./v./hr. and recycle gas rate of 3000 c. ft. per barrel.  Xylenes and polymers equivalent to 62 per cent by volume of the original fraction are separated and yield on fractionation pure xylenes containing some ethylbenzene.
Patent GB-529227-A (GB)
Title: Improvements in and relating to compressors
IPC: F25B31/00
Filed: 1939-05-25
Abstract: 529,227. Refrigerating &c. compressors; piston packing and lubricating. BRITISH THOMSON-HOUSTON CO., Ltd. May 25, 1939, No. 15551. Convention date, May 28, 1938. [Class 8 (i)] [Also in Group XXVI] A compressor in which the refrigerant &c. conveys lubricant comprises an inlet passage 14 by the side of the cylinder, connecting the inlet pipe 15 through a passage 17 with the inlet valve 19 ; the inlet passage alters the direction and rate of flow, causing separation of lubricant which is drawn into an annular groove 30 in the cylinder with which an annular groove 29 in the piston registers at intervals in its stroke ; excess lubricant passes by a tube 27 into the crankcase. The compressed refrigerant passes out through holes in the inlet valve and through passages 20 to the outlet valve 21, which like the inlet valve is a flexible plate. In a modification, the cylinder is horizontal and the inlet passage 14 passes across one side of it and communicates with the annular groove 30 along one side of each for the conveyance of lubricant, while the refrigerant &c. travels on to the inlet valves.
Patent GB-854638-A (GB)
Title: Improvements in or relating to screw fixing, adjusting or operating devices
IPC: B60R9/058
Filed: 1956-05-18
Abstract: 854,638. Turnbuckles. BIRTWHISTLE, H. May 17, 1957 [May 18, 1956 ; May 29, 1956], Nos. 15553/56 and 16515/56. Class 45. [Also in Groups XXV and XXXII] In a turnbuckle comprising a body A and oppositely threaded rods D, E threaded into the ends of the body, the rod E has a bore which may receive the rod D to increase the range of adjustment of the turnbuckle. The rods turn within internally threaded bosses B, C which may be secured to the body by pressing. The external ends of the rods may be provided with hooks which respectively engage the water channel B3 on a vehicle and the top bar A5 of a luggage rack and the external surface of the body may be knurled or keyed to facilitate operation.
Patent GB-1448081-A (GB)
Title: Process for the preparation of carnitine hydrochloride
IPC: C07C227/04
Filed: 1975-04-16
Abstract: 1448081 Carnitine hydrochloride LONZA Ltd 16 April 1975 [26 April 1974] 15612/75 Heading C2C Carnitine hydrochloride is made by (1) reacting a γ-haloacetoacetic acid anilide which can be N-alkylated or N-arylated with trimethylamine to give the corresponding γ- trimethylammonium acetoacetic anilide halide, (2) hydrogenating this product to give the corresponding γ - trimethylammonium - #- hydroxybutyric acid anilide halide and (3) reacting this product with hydrochloric acid to give the desired compound.
Patent GB-904884-A (GB)
Title: Improvements in projectiles
IPC: F42B3/28
Filed: 1944-08-16
Abstract: 904,884. Projectiles for destroying land mines. ANGUS & CO. Ltd., GEORGE, and CANNEY, D. E. F. May 29, 1945 [Aug. 16, 1944], No. 15650/44. Class 9 (2). [Also in Group XXVIII] A length of hose pipe filled with explosive and fixed as a projectile by means of a rocket comprises a tube of flexible elastic solid material, such as rubber, or polyvinyl chloride, and a plurality of longitudinally-extending yarns embedded in or held in position against the outside of the wall of the tube in order to give the hose longitudinal strength and to allow it to be bent on a small radius. The hose is fired from a coiled or folded condition. The hose may be formed by drawing a tube and yarns through a circular die and then through the die of a braiding machine so that a loosely braided jacket is applied over and holds the yarns in place. Yarns wound helically in opposite directions or adhesive may be used to hold the longitudinal yarns in place. In another method a tube of rubber is extruded, round which yarns are wound at a steep pitch angle over which a further layer of rubber is extruded.
Patent GB-544951-A (GB)
Title: Improvements in thermionic valves
IPC: H01J19/30
Filed: 1940-10-31
Abstract: 544,951. Coating with iron. MULLARD RADIO VALVE CO., Ltd., and HOORN, A. J. VAN. Oct. 31, 1940, No. 15954. [Class 82 (ii)] [Also in Group XL] Thermionic valve parts, such as anodes and screens, are coated with iron by applying a layer of ferric oxide and subjecting the layer to heat in a reducing atmosphere. The ferric oxide may be mixed with a binder such as a 2 per cent. solution of nitrocellulose and applied by painting or spraying. After drying, the components are heated in an atmosphere of hydrogen at a temperature of 650‹ to 950‹C, to destroy the binder and partly to reduce the oxide, after which they are heated for a further period at a temperature of 950‹ to 1050‹C. A matt non- blistering layer which readily absorbs gases produced during operation of the tube is formed.
Patent GB-261706-A (GB)
Title: Improvements in a process of and a separator system for separating dust from gases
IPC: B01D45/08
Filed: 1926-06-25
Abstract: 261,706. Bubar, H. H. Nov. 20, 1925, [Convention date]. Density separators.-Vortices are established in dust-laden gas, in which the dust is concentrated. The vortices are broken up, after travelling along their axes, whereupon the dust is discharged out of the gas current. Gas impinging on the concave channel members 10, 11, 12 which are closed at the top forms vortices which travel down the channels and are broken up by plates 25, the dust falling into still gas spaces within a hopper 26 while the gas is deflected to the next set of channels.
Patent GB-1111009-A (GB)
Title: Pleuromutilin derivatives useful in animal feed stuffs
IPC: A23K20/195
Filed: 1965-04-14
Abstract: Esters of the antibiotic pleuromutilin or its hydrogenation product are obtained by reacting pleuromutilin or its hydrogenation product with an ester-forming derivative of an acid selected from isocyanic acid, an aliphatic monocarboxylic acid having from 3 to 19 carbon atoms, a haloformic acid or monohaloacetic acid, an aliphatic dicarboxylic acid having from 3 to 14 carbon atoms, or a sulphonic acid.  The acid may contain an additional group capable of reacting with a base to form a salt; in which case, the first-formed ester is reacted with a base to form the salt.  The ester of the hydrogenation product of pleuromutilin may be produced by forming the ester of pleuromutilin and hydrogenating the ester before or after treatment with the base to form the salt.  Pleuromutilin has the formula <FORM:1111009/C2/1> On hydrogenation the vinyl group of pleuromutilin is hydrogenated to an ethyl group. Pleuromutilin, originally named antibiotic BC 757, was produced by the cultivation of Clitopilus passeckerianus (Pil.) Sing. NRRL 3100 in accordance with Specification 1,111,010. Typical esters are the succinate, monopalmitate, a  - carboxyethylcarbamate, 1,3 - dicarboxypropylcarbamate, beta - sulphopropionate and m-sulphobenzoate.  An animal feed or feed supplement comprises one or more esters of pleuromutilin or its hydrogenation product. Conventional feed supplements containing penicillium mycelia may be used.