baber/WOPTO huggingface dataset:
Patent GB-635539-A (GB)
Title: Improvements in apparatus for cleaning gas
IPC: B04C11/00
Filed: 1948-05-03
Abstract: 635,539. Centrifugal separators. HUMPHREYS & GLASGOW, Ltd., WILLIAMS, N. H., and HARTLEY, W. May 3, 1948, No. 12100. [Class 23] In a cyclone separator having a dust separating chamber a, a gas discharge chamber d, and a gas discharge pipe f between them, an externally operated valve g is provided for closing the pipe as it issues into the discharge chamber. The valve is carried by an axially movable rod g<SP>1</SP> and has a flange adapted to make a seal with sand in a channel f<SP>1</SP>. The discharge chamber may be spaced from the separating chamber.
Patent GB-579881-A (GB)
Title: Improvements in or relating to the polymerisation of ethylene
IPC: C08F10/00
Filed: 1941-09-19
Abstract: Ethylene, either alone or mixed with one or more other polymerizable organic compounds, is polymerized at elevated temperature and pressure in an aqueous medium in the presence of an alkali metal persulphate and a reagent capable of maintaining the pH of the aqueous medium between 7 and 11.  Other polymerizable organic compounds specified are other mono-olefines, e.g. amylene and butylene; dichloroethylenes, e.g. 1-2-dichloro-ethylene; 2-chloropropene-1; tetrafluoroethylene; vinyl ethers, ketones and esters and other vinyl compounds, e.g. methyl and propyl vinyl ethers, methyl and ethyl vinyl ketones, vinyl chloroacetate, vinyl propionate, N-vinyl phthalimide; stilbene; styrene; acrylic and methacrylic compounds, e.g. methyl, ethyl and propyl acrylates and methacrylates, methylene diacrylate and dimethacrylate, a -haloacrylic acids and esters, e.g. methyl a -chloroacrylate; esters of crotonic acid, e.g. methyl crotonate, and esters of itaconic acid, e.g. diethyl itaconate.  The reagent for regulating the pH value may be borax, sodium or potassium bicarbonate, sodium phosphate or mixtures thereof.  The persulphate catalyst may be used in conjunction with other polymerization catalysts, e.g. benzoyl peroxide.  The aqueous medium may be water alone or mixed with a volatile organic liquid, e.g. iso-octane, toluene, butyl acetate, ethyl ether, n-hexane, cyclohexane, cyclohexanone, butanol, methanol, or dioxane.  A dispersing-agent may be employed, or the process may be carried out in the absence of a dispersing agent as described in Specification 579,883.  The process may be carried out continuously, the unconverted reactants being recirculated, or in the manner described in Specification 579,882.  In examples ethylene is heated under pressure in the presence of an aqueous solution of (1) and (2) sodium persulphate, borax and the sodium salt of sulphonates of 16 carbon atom hydrocarbons, with or without vinyl acetate; (3) and (4) sodium persulphate and sodium bicarbonate or potassium persulphate and potassium bicarbonate; (5) and (6) vinyl chloride, sodium persulphate and either sodium carbonate or the sodium salt of sulphonates of 16 carbon atom hydrocarbons, phosphoric acid and sodium hydroxide.  From the polymeric products, films may be hot pressed or filaments extruded.  Specifications 471,590 and 497,643 also are referred to.
Patent GB-600062-A (GB)
Title: Improvements in and relating to grass cutting machines
IPC: A01D34/47
Filed: 1944-06-27
Abstract: 600,062. Change-speed gear. GREEN & SON, Ltd., T., and KNIGHT, F. B. June 27, 1944. No. 12220. [Class 80 (ii)] [Also in Group I] In a lawn-mower having a cutter cylinder 1 driven from a land wheel or roller 12, a change-speed gear is provided, the drive to the cutter cylinder being a direct chain drive which can be altered to bring into operation meshed gears 4, 16 which increase the speed of the cutter cylinder for a given forward travelling speed of the machine. The driving member comprises a roller 12 to which is attached a sprocket 13. The cutter cylinder 1 rotates about an axle 3 which also carries a gear-.wheel 4 splined to the axle but capable of axial movement, and a sprocket 10 restrained from axial movement but able to spin freely. The sprocket and gear-wheel are provided with dogclutch members 5, 11 which may be made to interlock. When the dogs are disengaged, the gear-wheel 4 meshes with a larger gear-wheel 16 keyed to a stub-shaft 14 to which is also fixed a sprocket 17. An endless chain 18 entrains the two sprockets 10 and 13 and engages the underside of the third sprocket 17. With the dogs interlocked the drive to the shaft 3 is a direct chain drive but, with disengaged dogs, the drive includes meshed gears 4 and 16. The change-over is effected through a lever 9 which, by means of shafts 7 and 8 and a forked member 6 engaging the small gear-wheel 4, can move this wheel along its axle. Specification 579,261, [Group I], is referred to.
Patent GB-1091313-A (GB)
Title: Stabilised crystalline propylene block copolymers
IPC: C08K5/13
Filed: 1965-03-23
Abstract: A block copolymer of propylene and another olefin, e.g ethylene, is stabilized with a trisphenol of formula <FORM:1091313/C3/1> wherein n is 0 to 8, R is a C4 to C16 t-alkyl group, and R1 is a normal C1 to C16 alkyl group.  The preferred tris-phenols are the 2,6-bis-(2-hydroxy-3 - t - butyl - 5 - [ethyl, propyl, and methyl] benzyl)-4-methylphenols.
Patent GB-494114-A (GB)
Title: Improvements in or relating to sound recording apparatus
IPC: G11B7/00
Filed: 1937-04-30
Abstract: 494,114. Optical sound-recording apparatus; modulating light. RADIO CORPORATION OF AMERICA. April 30, 1937, No. 12416. Convention date, May 28, 1936. [Class 40 (ii)] [Also in Group XL] A double-edged sound record trace with both edges in phase, and a " ground noise " masking trace are produced simultaneously by an apparatus comprising means for forming a light spot having a shape increasing in width from the middle towards both ends, a device for selecting a narrow line of light from said spot, a device for vibrating said spot and said selecting device one with respect to the other in accordance with the sound waves in a direction transverse to the narrow line of light, and a pair of laterally moving shutters for masking said spot from both ends in an inverse relation to the volume of the sound. As shown in Fig. 1, light from a lamp 7 passes through a condenser 8 to a plate 9 having an aperture 12 one side of which is V-shaped. The image of this is thrown by lenses 10, 11 and galvanometer mirror 5 on a plate 13 having a slit 14 ; and the image of this is thrown by lenses 16, 17 on the film 15. At the side of the aperture 12, two laterally movable shutters 24, 25 are provided and adapted to be operated by an electromagnet 21. The galvanometer 4 is supplied through amplifiers 2, 3 with current representing the sound received by a microphone 1, and the electromagnet 21 is supplied by a low-pass filter and amplifier-rectifier 6 connected to the amplifier 2 with a variable direct current representing the volume of the sound. The shutters may be moved inwardly from a normal outward position to mask the edges in accordance with a decrease of volume ; or the shutters may be moved outwardly from a nearly closed normal position in accordance with an increase of volume. The shutter mechanism is supported by a member 41, Figs. 3 and 4, which is mounted on a base member 40 and supports also another member 42 carrying the condenser 8, the lens 10, and the apertured plate 9. The carriage member 42 is adjusted laterally against a spring 45 by a screw 43 provided with a lock-nut 44. The lenses and the apertured plate are mounted in a barrel 47 adjustable longitudinally and rotationally within a split sleeve 52 on the carriage member. An eccentric pin 49 on a screw 50 on the sleeve 52 fits in a longitudinal slot 48 in the barrel 47 to permit these adjustments of the barrel, after which the split sleeve 52 is tightened by a screw 51. The shutters 24, 25, Fig. 2, are carried by arms 53, 54 pivoted on knife-edges 26, 27, against which they are held by a C-shaped spring 28. The shutters are adjustable lengthwise on the arms and are clamped thereto by screws 55, 56; and the knife-edges are adjustable laterally by screws 57, 58. The arms 53, 54 are connected by a flexible resilient member 23 to the arm 22, Fig. 3 of an armature 63 of a pair of magnets 64, 65 receiving the volume control current. Specifications 384,742, 422,543, and 444,015 are referred to.
Patent GB-553566-A (GB)
Title: Improvements in methods of colour photography
IPC: G03C7/28
Filed: 1941-09-25
Abstract: 553,566. Colour photography. KODAK. Ltd. (Eastman Kodak Co., Young, R. V., and Ehrenfried, G.). Sept. 25, 1941, No. 12462. [Class 98 (ii)] In a dye-destruction process, after forming the necessary silver image in a layer of the material and removing any unwanted silver salt from the layer, azo dye diffusely contained in the layer is bleached in the regions of the silver image by treating with a strong acid, ionized to an extent of 70 per cent or more when mixed with water) in the form of a dilute solution which produces no appreciable change in the silver image, followed by a bath comprising an alkaline stannite. Dilute solution of HCl, HNO 3 , or H 2 SO 4  may be used. The dye may be a polyazo dye containing 2, 3, 4 or more azo groups. The material may comprise a single gelatino-silver halide emulsion layer or several emulsion layers coated on one or both sides of a support, e.g. glass, cellulose ester, or synthetic resin, (transparent), or pigmented cellulose ester or paper (opaque). The emulsion layer or layers may contain the dye prior to exposure or may contain a dye intermediate or derivative from which the dye may be formed after exposure. The dye may be approximately complementary in colour to the effective colour sensitivity of the emulsion layer containing it. An outer blue-sensitive layer is coloured yellow, a middle green-sensitive layer is coloured magenta, and a lower red-sensitive layer is coloured blue-green. A separate' filter dye may be incorporated in the outer layer or in a filter layer between the outer and middle layers. For printing, the red-sensitive layer may be replaced by an infra-red sensitive layer. False-colour layers as described in Specifications 475,784 and 475,786 may be used. In an example, material having an image-forming dye or dyes in one or more emulsion layers is exposed, developed in a metol-hydroquinone developer containing borax, placed in an acetic acid stop-bath, fixed in an acid hypo bath containing hypo, sodium sulphite, acetic acid, boric acid, and potassium alum, washed, treated in a dilute sulphuric acid bath, and then the dye or dyes image-wise destroyed in a bath containing stannous chloride and sodium hydroxide. The remaining silver may be bleached in a bath containing cupric chloride and hydrochloric acid and the resulting silver salt removed with hypo. Dyes referred to are the dye of Specification 539,190, the dye obtained by coupling tetrazotized 4:41- diamino - 3:3<SP>1</SP>:6:6<SP>1</SP> - tetramethyltriphenylmethane with two mols of N-heptoyl-H acid, the dye made by coupling diazotized p-amino-N-methylacetanilide with 2-ethoxy Cleves' acid, and diazotizing the product and coupling with N-(4<SP>11</SP>- amino-41-benzoylaminobenzoyl)-gamma acid, and the dye obtained by coupling tetrazotized 4:4<SP>1</SP>- diaminostilbenedisulphonic acid with phenol and forming the di-n-propyl ether of the product. Specifications 133,034, [Class 98 (ii)], 539,391, and 546,704 also are referred to.
Patent GB-1423392-A (GB)
Title: Pesticidal phosphorus-conatining oxadiazole derivatives
IPC: A01N57/08
Filed: 1973-03-15
Abstract: 1423392 Pesticidal phosphorus-containing oxadiazole derivatives CIBA-GEIGY AG 15 March 1973 [16 March 1972 12 Feb 1973] 12466/73 Headings C2P and C2C Novel compounds of Formula I where R 1  is methyl, methoxy, ethyl, ethoxy, propyl or propoxy, R 2  is methyl, ethyl or propyl, R 3  is phenyl mono- or polysubstituted by F, Cl, Br, CH 3 , CF 3 , CH 3 O CH 3 S, C 2 H 5 O and/or NO 2  and X is sulphur may be prepared by reacting a compound of Formula III where Hal is fluorine, chlorine, bromine or iodine with a compound of Formula II in the presence of an acid-binding agent, or with a salt of a compound of Formula II. The starting material 3-hydroxy-5-(4-methylphenyl) - 1,2,4 - oxadiazole may be prepared by reacting hydroxylamine hydrochloride with 4-methylbenzoylisocyanate. The compounds of Formula I have insecticidal, acaricidal, bactericidal, fungicidal and nematocidal properties and may be used as the active ingredients in conventional pesticidal compositions.
Patent GB-329477-A (GB)
Title: Suspension system for motor cars and vehicles of all kinds
IPC: B60G11/14
Filed: 1929-04-22
Abstract: 329,477. Horstmann, S. A., and Horstmann, Ltd. April 22, 1929. Addition to 328,033. Springs, arrangement of.-In vehicle suspension - systems as described in the parent Specification in which the resistance of the spring increases at a greater rate than the deflection, a lever pivoted to the frame and rigidly connected or pivoted to the axle is also pivoted to one end of a spring tension or compression member and to an arm pivoted to the frame. In the construction shown in Fig. 1, the axle 6 is fixed to a lever 1 connected by a shackle 7 to the frame 4. The other end of the lever 1 is pivoted to a link 2 and to an elastic compression member 3 which are pivoted to one another while the link 2 is further connected to the frame. Variations of this construction employing tension or compression springs are illustrated. In the modification shown diagramatically in Fig. 6, the axle 6 is secured to the end of a lever 2 which is pivoted to the frame 4 and carries a roller 9 bearing against an additional lever 1 pivoted to the frame 4 at one end and connected to the tension spring 3 at the other. In a further modification shown in Fig. 5, the frame 4 is connected to the axle 6 through springs 3, bell-crank levers 1<a> and links 2a.
Patent GB-143040-A (GB)
Title: Improvements in colliery tubs and like vehicles
IPC: B61D11/02
Filed: 1919-05-19
Abstract: 143,040. Barker & Co., J., Wilkes, J., and Phillips, T. May 19, 1919. Sides, floors, and framing.-A colliery tub or like vehicle has the sides and ends B, C formed with alternate and engaging tongue members c which are bent so as to lie on the outside surfaces of the adjacent sides when in the assembled position, vertical corner and intermediate bracket members D, E being provided to hold the parts securely together. The bracket D has hooks d<2> engaging the top side edges, and a base member d secured to the floor. The brackets E have also hook members e<2>, as shown. The base or floor of the wagon has an upturned edge a projecting round the sides and ends B, C. The arrangement described is designed to facilitate repairs.
Patent GB-539101-A (GB)
Title: Improvements in or relating to cigarette and like cases
IPC: A24F15/12
Filed: 1940-08-02
Abstract: 539,101. Cigarette &c. cases. BEECH, E. E., PEARLMAN, B., and WALL, Ltd., H. Aug. 2, 1940, No. 12540. [Class 18] A cigarette &c. case consisting of two traylike halves 2 has the cigarettes &c. retained in place by a substantially rigid strip 3 of metal, artificial resin &c. secured resiliently at one or both ends by spring fingers 10 which engage as shown in slots 8 in a lip 7 at the edge of the tray 2 and which normally assume the position shown dotted.
Patent GB-460349-A (GB)
Title: Improvements relating to the supply of combustible mixture to an internal combustion engine
IPC: F02M13/08
Filed: 1936-05-04
Abstract: 460,349. Special fuels. GREIG, E. J. May 4, 1936, No. 12592. Convention date, May 4, 1935. [Class 7 (ii)] An internal-combustion engine adapted to run on either petrol or producer gas is started on mixture supplied by a petrol carburetter 14 tnrougn a changeover switch 16 to the induction manifold, and run normally on gas produced in a plant 1 ... 8 and compressed by a supercharger 10, the gas produced during the heating-up stage being discharged into the atmosphere through the valve 16. This comprises a casing 18 enclosing a rotor 19 having two arcuate channels 19a, 19b, adapted in the position shown to put the petrol carburetter connected to an inlet 16a into communication with the outlet 16c to the manifold and to connect the supercharger, secured to an inlet 16b, into communication with the atmosphere through an outlet 16d, or if turned a quarter turn to put the supercharger into communication with the manifold and the petrol carburetter with the air. A throttle valve 28 in the outlet 16c is linked to the throttle valve of the carburetter 14 to adjust the quantity of petrol air mixture fed to the engine.
Patent GB-108752-A (GB)
Title: Improvements in and relating to Systems of Electric Motor Control.
IPC: B60L7/12
Filed: 1916-09-06
Abstract: 108,752. British Thomson-Houston Co., (General Electric Co.). Sept. 6, 1916. Systems for continuous-current motors only.- In a regenerative control system for a series traction motor, an exciter is connected in a local circuit with the motor field coil and a short circuit around the field coil includes a reactance, which in the case illustrated is the field winding of the exciter. The motors 10, 12 with series fields 11, 13 are connected for series-parallel control by the controller C, the field coils being connected upon the ground side of the armatures. The auxiliary motor 21 is supplied from the trolly through a rheostat 22. and drives an exciter E and a control generator 28. The exciter has two separate armature windings connected to commutators 23, 24 and has field coils 26, 27 and a shunt coil 25 connected to the generator 28. A braking-controller B is provided to control the regenerative action of the machines and in its zero position, shown in Fig. 1, the exciter armature windings are short circuited and the field coils are open circuited. To start braking, the controller B is moved to its first position. The exciter armature windings are connected in local circuits with the motor field coils and the resistance 32 is of such value that the field 25 produces an exciter voltage that causes no change in the excitation of the motor fields. Further movement of the controller B cuts out the resistance 32 thereby strengthening the motor fields and increasing the regenerative braking effect. In this arrangement, the motor field coil and exciter armature are in the connexion between the trolly and earth and are shunted by an exciter field coil. In a modification, the exciter armature and field coil are shunted across the motor field coil. Specification 22868/07 is referred to.
Patent GB-770722-A (GB)
Title: Improvements in or relating to processes of making lithographic plates
IPC: B21C1/08
Filed: 1955-05-02
Abstract: 770,722. Electroplating ferrous metal with chromium. STEEL VAT CORPORATION. May 2, 1955 [May 3, 1954], No. 12651/55. Class 41. [Also in Group XX] A 58 Î 27 in. bright-finished cold-rolled steel plate is cleaned with pumice and hydrochloric acid, rinsed and plated in a bath containing 30 to 50 ounces chromic acid and 0.3 to 0.5 ounces of sulphuric acid at 125‹ F. in four treatments of about a minute each, using current rising from 5000 amps for the first treatment to 6500 amps for the last with a 10 second interval between the treatments, and a voltage of about 6 to yield a dull finish. Optionally the current may initially be reversed so that the plate is first used as anode. Specification 770,340, [Group XX], is referred to. Reference has been directed by the Comptroller to Specification 483,349, [Group XVI].
Patent GB-101420-A (GB)
IPC: E04B2/40
Filed: 1916-09-07
Abstract: 101,420. Rabut, C. Sept. 8, 1915, [Convention date]. Void [Published under Sect. 91 of the Act]. Arches.-Concrete structures are faced with angled blocks which form a permanent centering and comprise one or more faces b, b<1> in addition to the principal face a. Fig. 2 shows one form of block, and Fig. 5 shows an inside view of the facing-wall ready to receive the concrete. Fig. 4 shows another form of block. The bases b<1> may be omitted from either form. The blocks may be made of concrete, plaster, stucco, burnt clay, &c. and may have a metal reinforcement; or they may be made of fibro-cement or wood; they may be moulded with projections, flanges, grooves, holes, or recesses and be provided with projecting studs, keys, bolts, or spikes to connect adjacent blocks. Arches may be built with the blocks and concrete filling, a simplified centering being used. The front faces of the blocks may be ornamented.
Patent GB-1192751-A (GB)
Title: Yeast Packages
Inventor: MORE LESLIE CHRISTIE
IPC: B32B15/04
Filed: 1967-03-17
Abstract: 1,192,751. Packaging yeast. DISTILLERS CO. (YEAST) Ltd. 15 March, 1968 [17 March, 1967], No. 12738/67. Addition to 1,172,595. Heading B8C. [Also in Division B5] The metal foil bag of the parent Specification is given small perforations which allow some yeast vapours to escape but do not allow oxygen to enter the bag. The perforations preferably have a diameter of 0.02 inch to 0.06 inch.
Patent GB-998434-A (GB)
Title: Improvements in or relating to tiered trolleys
IPC: A21B3/00
Filed: 1964-03-25
Abstract: 998,434. Tiered trolleys. E. C. STEWART. March 25, 1964 [July 10, 1963], No. 12741/64. Headings A4B and A4H. [Also in Division B7] A tiered trolley, e.g. for transporting tins of dough to and from a baking oven, or for use in the ceramic industry, comprises a wheeled or castered framework on each end of which are metal angle section members 6 which support slidable shelves, the front side of the framework being closed by a pair of tubular metalframed gates 10 hinged at 12 to uprights 1 of the framework, each gate comprising metal angle-section members 14, uprights 13, uprights 15, the members 14 being aligned with the cross-members 6 when the gates are opened through 90 degrees so that the shelves may then be slid outward on the members 14 clear of the framework. Stop strips 16 are welded to the uprights 11 to limit the gate opening to 90 degrees and the gates are lockable in the closed position. Each slidable shelf comprises a metal mesh 7 on a metal angle section frame 8 which has one or more side projections 17 adapted to engage the uprights of the trolley to limit the extent of outward and inward sliding of the shelves. The uprights 13 extend downward from the gate frames so that they just clear the ground to prevent toppling of the trolley when a shelf is slid forward.
Patent GB-917576-A (GB)
Title: Heavy gauge double oriented magnetic sheet material
IPC: C22C38/12
Filed: 1961-04-10
Abstract: A process for producing magnetic sheets for motor and generator cores comprises hot rolling at a temperature between 900 DEG  and 1200 DEG C. an ingot of a molybdenum-iron alloy containing from 3 to 5% molybdenum to a slab having a thickness of from 0.15 to 0.5 inch, cold rolling the slab at least twice, each cold rolling step effecting a deformation of at least 30% and not more than 80% in thickness, annealing the slab between each cold-rolling step at a temperature of from 700 DEG  to 1200 DEG  C. in an atmosphere of dry hydrogen having a dew point of at least - 30 DEG  C. for a period of time to produce complete primary recrystallization and after the final cold-rolling step heat-treating the sheet at a temperature of from 1050 DEG  to 1400 DEG  C. for from 2 to 16 hours in either dry hydrogen having a dew point of at least - 40 DEG  C. or a vacuum of at least 10-1 mm. Hg to promote complete secondary grain growth and produce a doubly oriented cube-on-face magnetic sheet.  The sheet comprises at least 60% by volume cube-on-face oriented grains having (100) plane within 10 degrees of the plane of the sheet and at least 85% of these cube-on-face oriented grains having a direction within 10 degrees of the direction of rolling. The 3 to 5% molybdenum alloy includes from 0.5 to 1.5% silicon and/or up to 2% manganese, and/or up to 0.05% aluminium.  The final sheet thickness is from 0.5 to 25 mils.  The heat treatments are carried out in nickel-chrome-iron alloy boats in a nickel-chrome-iron alloy tube furnace and the sheets are separated by alumina powder.  Reference has been directed by the Comptroller to Specification 870,209.