baber/WOPTO huggingface dataset:
Patent GB-433201-A (GB)
Title: Improvements in the manufacture and production of azo dyestuffs
Filed: 1934-02-03
Abstract: Azo dyes are made by coupling 8-hydroxy quinoline or its derivatives free from carboxylic groups other than 8-hydroxyquinaldine or its derivatives with diazotized halogenaminobenzenes free from hydroxy and carboxylic groups, the components being so selected that a single sulphonic group is contained in the dyestuff molecule.  They yield orange shades on wool when chrome mordanted, after-chromed or when dyed from baths containing neutral chromium salts.  In examples the following dyestuffs are described: (1)--(2) 1-amino-3-chlor- or 3 : 4-dichlorbenzene-6-sulphonic acid --> 8-hydroxyquinoline; other components specified are 2-chloraniline-5-sulphonic acid, 4-chloraniline-2- or 3-sulphonic acid and 5-methyl- or 5-chloro-8-hydroxyquinoline, (3)--(5) o-, m- and p-chloraniline, 1-amino-2-chloro-4-methylbenzene, 1-methoxy-2-amino-4-chlorobenzene, 2 : 5-dichloraniline or 1-methyl-2-chlor-4-aminobenzene --> 8-hydroxyquinoline-5-sulphonic acid.  Specifications 166,033, [Class 2 (iii)], and 419,599 are referred to.
Patent GB-100181-A (GB)
Title: Improvements in or relating to Inclinometers and like Instruments.
IPC: G01C9/12
Filed: 1916-03-10
Abstract: 100,181. Sperry Gyroscope Co., (Assignees of Sperry, E. A.). March 12. 1915, [Convention date]. Levels and clinometers; horizons, artificial.-In the construction shown in Figs. 1 and 2, a hub 11 with vanes 8 is pivoted within a casing 1 filled with liquid and adjustable about the pivot 3. The centre of gravity of the pivoted system of hub and vanes is only slightly below the pivots, and the specific gravity as a whole is about equal to that of the liquid, the centre of buoyancy being above the centre of gravity. The casing has a glass front 2 with scales 13, 14, by which the positions of the pointers 12, 15 can be read, a shadow of the latter pointer being thrown on to the scale by the electric lamp 17. An artificial-horizon apparatus provided with another form of angle-multiplying device is shown in Figs. 3 and 4. The liquidcontaining casing is itself mounted in horizontal pivots and is capable of being adjusted by means of a pinion 28 and gear sector 29. The vane system carries a concave mirror 20<1> projecting an image of the filament of a lamp 21<1> upon the scale 31. A part of the rays fall upon an anglemultiplying device comprising a prism 32 with a shallow groove 32', the rays falling upon the groove being deviated by a considerable angle and forming an image upon the scale 33. Another angle-multiplying means, shown in Fig. 5, comprises a lamp 21, a concave mirror 20 mounted on the vane system, and a stationary mirror 22 for reflecting the filament image on to a scale on the glass front 2.
Patent GB-432581-A (GB)
Title: Improvements relating to automatic reclosing circuit breaker mechanisms
IPC: H01H75/04
Filed: 1934-02-03
Abstract: 432,581. Automatic circuit-breakers. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, HUNTER, M. C. I., 79, Teddington Park Road, Teddington, Middlesex, and COX, H. E., 96, Burnley Road, Dollis Hill, London. Feb. 3, 1934, No. 3617. [Class 38 (v)] In automatic reclosing mechanism for a circuit-breaker, of the kind in which a pulley is rotated to reset and reclose the circuit-breaker by means of a rope wrapped around its periphery, the pulley is eccentrically mounted or is provided with a non-circular periphery, in order that it may act with greater leverage during the circuit-closing portion than during the resetting portion of the cycle. In the arrangement shown, the pulley 4 is loosely mounted, by means of an eccentrically located bore 5, on a crank shaft 2, the pulley being adapted to drive the shaft in one direction by means of a pawl 12 which engages a ratchet plate 15 fixed to the shaft. A rope 7 is wrapped round a spiral groove 6 on the pulley, one end of the rope being fixed to the pulley at 8, and the other end fixed to a hook 9 carried on the upper of a pair of relatively movable plates 10 between which a compression spring 11 is mounted. The convolutions of the spiral increase in diameter from one side of the pulley to the other in order to compensate for the gradually weakening pull of the spring with successive reclosing operations. The shaft 2 carries a crank 17 provided with a pin 18 to which is pivoted a link 19 connected to the main circuit-breaker mechanism 20. In the position shown, the movement of the crank is prevented by the engagement of its end 21 with a pivoted spring-controlled roller prop 22 connected by a link 27 to the circuit-breaker tripping mechanism 28. Operation of the latter raises the prop 22 and releases the crank 17, whereupon the rope is drawn in an upward direction by the spring 11 and commences to rotate the crank in a clockwise direction. The first part of the movement, during which the circuit-breaker is reset, is retarded by a dash-pot 38 to the piston rod 37 of which the crank-pin 18 is connected by a slotted link 33. During the latter portion of the movement, when the circuit-breaker is reclosed, the pulley is in a position in which the rope acts with greater mechanical advantage than during the resetting movement. After three successive reclosings, the pulley can be rotated through worm gearing by means of a detachable handle 31 to reset the apparatus.
Patent GB-876330-A (GB)
Title: Improvements in or relating to butterfly valves
Inventor: MCLAREN NORMAN HAROLD
IPC: F16K1/228
Filed: 1958-02-04
Abstract: 876,330. Valves. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Jan. 26, 1959 [Feb. 4, 1958], No. 3692/58. Class 135. A butterfly valve comprises a tubular body 1 housing a butterfly closure member 2, 3 pivotally mounted at 6, two flexible annular sealing diaphragms 5 of frusto-conical form inside the body and positioned on opposite sides of the pivotal axis of the closure member, each diaphragm being sealed at its edges to removable plates 7, 8 sealed to the body at 16 to form an annular space 13 bounded by the plates and the diaphragm, two sealing rings 4 located in grooves in the periphery of the closure member for respective co-operation with the diaphragms, and passageways 12 communicating with the spaces 13 so as to permit the sealing together of the diaphragms and their respective sealing rings by fluid pressure. An annular space 11 enclosed by the diaphragms between the periphery of the valve member 2, 3 and the body 1 in the closed position is connected by a passage 10 with the outside of the body whereby leakage may be detected.
Patent GB-537634-A (GB)
Title: Improvements in and relating to latch mechanism for doors or the like
IPC: E05B65/32
Filed: 1940-02-29
Abstract: 537,634. Fastenings. UNITED-CARR FASTENER CORPORATION. Feb. 29, 1940, No. 3801. Convention date, March 31, 1939. [Class 44] A swinging latch for a car door &c. comprises a member 2 pivoted at 16 and adapted to be moved to release position by a spring 17 when a spring locking member 31 is moved out of contact with member 2 by push or pull members 42, 41 on opposite sides of the door. When the latch is released, its nose 23 pushes against the face 49 of the striker plate 3 to open the door slightly. The striker plate may carry a rubber buffer 58 for the latch.
Patent GB-251707-A (GB)
Title: Improvements in and connected with telephonic receivers and the like
IPC: H04R7/26
Filed: 1925-02-11
Abstract: 251,707. Palmer, W. J. Feb. 11, 1925. Magnetic instruments; diaphragms.-In a loud speaking instrument of the hornless type, the diaphragm is damped at points or spots thereon by tufts, pads &c. of soft material mounted on a carrier. As shown, a large dished diaphragm d is clamped between rings c supported by screwed pillars d on a base or back plate a. A wire frame k is adjustably supported by nuts on the pillars and is provided with cups l containing tufts m of camelhair, down or the like material in contact with the diaphragm. The pillars may have a series of notches so that any arm k<1> of the frame may be engaged with any selected notch and the desired adjustment of any tuft be effected. The frame k supports a strip o which is clamped between the diaphragm and the armature e of electromagnet h and serves as a stabilizer for the diaphragm. In an alternative arrangement, the tufts may be attached at points to a fabric gauze and the gauze may be tensioned on a supporting frame. Specification 239,935 is referred to.
Patent GB-1035335-A (GB)
Title: Semi-conductor manufacture
Inventor: DOBSON CHRISTOPHER DAVID
IPC: H01S5/02
Filed: 1963-01-31
Abstract: 1,035,335. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. Jan. 24, 1964 [Jan. 31, 1963], No. 4050/63. Heading H1K. [Also in Division H3] An injection laser is produced from a single crystal 1, Fig. 1, of semi-conductor material by forming an optically flat polished surface 2 in one of the crystal planes and doping this surface so as to form a light-emitting P-N junction region 4 within the material and parallel to the surface, the crystal then being cleaved at two points 19, 20 on the surface 2 so as to form a bar 8, Fig. 2, with two parallel surfaces 9, 10 orthogonal to the surface 2 which together define an opticallyreflecting cavity. The bars of material so formed are cut into cubes 13, 14 &c. to produce finished laser bodies, Fig. 3 (not shown), each body being soldered to a heat sink electrode and having a further electrode attached to the optically flat surface 2. The crystal material may be gallium arsenide which is doped with zinc to form the P-N junction region. The face 2 may be located with respect to the (iii) crystallographic plane and the cleaved surfaces formed along the (110) plane 5, the cleavage points 19, 20 being adjacent one end to minimize the cleavage along the (110) and (110) planes 6, 7. Alternative cleavage systems are possible if the optically flat surface 2 is formed on the (110) or (100) type faces.
Patent GB-1457392-A (GB)
Title: Light emitting gallium phosphide device
IPC: H01L33/00
Filed: 1975-01-30
Abstract: 1457392 Alpha-numeric displays TOKYO SHIBAURA ELECTRIC CO Ltd 30 Jan 1975 [8 July 1974 23 Oct 1974] 4079/75 Heading G5C [Also in Division H1] A GaP device comprising a light emitting layer or region forming a PN junction with one face of a GaP substrate of opposite conductivity type is provided with a light absorbing layer of amorphous or polycrystalline silicon on part of the layer or substrate. The light emitting region when doped with Zr to render it P type may include oxygen so as to emit red light but is preferably nitrogen doped so as to emit green light. The silicon layer which is generally 0.3-2Á thick has a refractive index and thermal expansion coefficient similar to those of GaP thus reducing thermal stress and reflection at its interface with the GaP. In one embodiment an array of P type regions is formed in one face of a Te, S, or Se doped N type wafer by diffusion through a mask of silicon nitride, alumina or phosphosilicate glass and the silicon layer deposited between the regions and on the whole of the opposite wafer face. In the preferred embodiment a numeric display device is formed by optionally depositing N and Te doped GaP from the liquid or vapour phase on a Te doped GaP wafer, diffusing zinc into the entire surface of the layer (or substrate), depositing layers of Au-Be alloy and Au on the diffused area and etching them to form an electrode pattern, optionally coating the electrodes with phosphosilicate glass, evaporating amorphous silicon over the treated surface and using it as a mask in etching through the diffused region to form mesas only alternate ones of which bear electrodes, etching to expose the electrodes and finally depositing successive layers of silicon, silicon-gold and gold on the back face of the wafer. The silicon substantially improves the contrast between light emitting and non-emitting areas.
Patent GB-628283-A (GB)
Title: Antennae
IPC: H01Q13/10
Filed: 1947-02-12
Abstract: 628,283. Aerials. ELECTRONICS RESEARCH, Inc. Feb. 12, 1947, No. 4080. Convention date, Feb. 20, 1946. [Class 40 (vii)] An antenna unit comprises a pan-shaped conductive housing 11 having an electricallyopen side and an antenna element 10 formed of elongated flat strip grounded to the housing directly at one end and through a variable condenser at. the other end. The unit is designed for use on aircraft where the housing may be sunk in flush and connected with the vehicle skin by peripheral flange 18. A non- conduction sheet 17 may seal the housing against moisture. A coaxial transmission line 24 enters' the housing through a gland and connects with the antenna at a point 25 critically spaced from the grounded end. An alternative method of connection, Fig. 4 (not shown), employs capacitative coupling. The field pattern is generally uniform in planes normal to the surface into which the antenna is sunk.
Patent GB-1235641-A (GB)
Title: Semi-conductor element with high reverse breakdown voltage
IPC: H01L29/861
Filed: 1970-01-28
Abstract: 1,235,641. Semi-conductor device. BROWN, BOVERI & CO. Ltd. 28 Jan., 1970 [30 Jan. 1969], No. 4108/70. Heading H1K. A semi-conductor diode comprises a discshaped silicon wafer 1 containing a PN junction (not shown) which terminates at the surface of the wafer at an annular conical chamfer 2 forming part of an annular sawtooth recess. The recess is filled with silicone rubber 4, and an end rim of a cylindrical insulating member 8, of polytetrafluoroethylene or ceramic material, embedded in the material 4. A gold-antimony foil 5 is alloyed to one face of the wafer, and an aluminium foil 6 contacts the other. A molybdenum carrier plate 7 contacts the electrode 6. The device is said to prevent flashover at the surface, in the region of the PN junction, up to a reverse voltage of 5000 volts for long periods.
Patent GB-1089002-A (GB)
Title: Improvements in devices for automatically feeding fodder into the mangers of a milking box
IPC: A01K5/02
Filed: 1965-01-29
Abstract: 1,089,002. Animal feeding devices. O. METZGER. Jan. 29, 1965 [Jan. 29, 1964], No. 4134/65. Heading A1M. Concentrated fodder is automatically fed from elevated containers 6 into the mangers 4 of a milking box through screw conveyers 8. The conveyers are operated through pawl-and-ratchet mechanism by ropes 16 connected to radial arms 17 on a common shaft 18 oscillated by a motor at one end. As shown, each container supplies a pair of mangers through separate screw conveyers and discharge slides 14, and each pawl may be additionally manually operated through a rope 24 to supply additional fodder to the corresponding manger. In a modification (Fig. 6, not shown), varying amounts of fodder are automatically apportioned to the different mangers through segments positionable to mesh varying numbers of teeth on the ratchet wheels. These segments may be replaced by movable stops for the pawls.
Patent GB-379225-A (GB)
Title: Improvements relating to fuel injection pumps
IPC: F02M59/26
Filed: 1932-02-11
Abstract: 379,225. Fuel-injection pumps. L'ORANGE, P., 130, Cannstatter Strasse, Feuerbach, Stuttgart, Germany. Feb. 11, 1932, No. 4135. Convention date, Sept. 11, 1931. Addition to 377,065. [Class 102 (i).] In a multi-cylinder fuel-injection pump of the type described in the parent Specification, in which the plungers b are rotated by the governor against the action of springs or fluid pressure in order to vary the timing of a relief port controlled by the plunger, provision is made for preventing the return of one or more of the plungers to the zero position, in order to supply sufficient fuel to the engine for slow running. The plungers are rotated by means of a bar l formed with projections engaging the ends of plunger-adjusting levers n. The bar is moved to the left by the governor in order to increase the fuel supply and the plungers are rotated by their springs, to reduce the fuel supply, when the bar is moved to the right. Stops p on a bar o prevent complete return of some of the plungers to the zero position.
Patent GB-658867-A (GB)
Title: Improvements in tools for forming circular holes
IPC: B23B51/04
Filed: 1949-02-16
Abstract: 658,867. Annular cutters. BIRMINGHAM SMALL ARMS CO., Ltd., and WALTON, K. Feb. 16, 1949, No. 4189. [Class 83 (iii)] An annular cutter 4 has a centring member 16 urged by a spring 15 to project beyond the cutting end of the cutter, and means to retain the member 16 in a retracted position against the influence of the spring. The spring 15 is housed in an extension 1 of the cutter between a plunger end 14 of the centring member and a disc 9 which can be secured in adjusted position by means of one or more screws 8 passing through slots in the extension. One or more pins 13 are provided on the plunger-end 14 to engage bayonet slots 11 in the extension 1 and provide the means for retaining the member 16 in retracted position when the cut is sufficiently deep to centre itself. When used with an abrasive paste for cutting glass, the cutter is formed of copper and has one or more helical slots 5; the cutter may, alternatively, be formed of other materials and have hardened cutting teeth or serrations.
Patent GB-211511-A (GB)
Title: Improvements in or relating to pipe connection devices and valves
IPC: F16L41/02
Filed: 1924-02-18
Abstract: 211,511. Haarmann, E. Feb. 19, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Junction pieces; with valves.-The flow of fluid from hydraulic or compressed air mains b to a branch pipe is controlled by a plug valve g positioned in a junction piece a mounted between flanges e on the main pipe and provided with a branch piece p for connection to the branch pipe or hose. The valve is disposed in a bore h, which is closed at its lower end by a screw plug i, and the valve rests on a helical spring or spring washer k supported in a groove j, in order to secure a fluid-tight joint. A screw-down valve may replace the plug valve. The connection piece p is tapered and provided with a coupling member t; or it may be screw-threaded. The junction piece a is preferably provided with one or more screw-threaded bores q normally closed by plugs and adapted for connection with piping, and a number of connection pieces p, controlled by one valve, may be provided thereon.
Patent GB-470612-A (GB)
Title: Method of treating plants and obtaining textile fibres therefrom
IPC: D01C1/02
Filed: 1937-02-12
Abstract: In a process for simultaneously wetting and bleaching fibres, e.g. from flax, ramie, hemp, jute, sisal, alfa for textile purposes, the fibres are treated at ordinary room temperature and pressure with a liquid comprising an emulsion of soft soap, a wetting agent and a bleaching agent.  Suitable wetting agents are sodium sulphoricinate, triethanolamine or tricresylphosphate, and suitable bleaching. agents are sodium hypochlorite, hydrogen peroxide or ozone.  In an example, 100 kilograms of jute fibres are treated for 24 hours at atmospheric temperature and pressure in a cleaning bath consisting of 100 kilos water and 2 kilos of mineral acid, or a salt thereof, e.g. hydrochloric acid, or ammonium chloride.  The treatment eliminates sap from the fibres and begins to dissolve gums and pectic compounds. After rinsing, the plants are treated for 20 hours at 20 DEG  C. and atmospheric pressure in a second bath containing 8 kgms. high grade potash soap containing glycerine, 5 litres of a 50 per cent solution of sodium sulphoricinate, 50 litres of sodium hypochlorite of 24 DEG (chlorometric) strength and 1000 litres of water.  The fibres are finally treated for 20 hours at atmospheric temperature and pressure in 1000 kgms. of water, 2 kgms. of a fatty acid e.g. formic acid. This arrests further action of the hypochlorite. The fibres are finally washed.  Sprinkling treatments may be used in place of bath treatment.
Patent GB-175297-A (GB)
Title: Improvements in or relating to vertical chamber ovens
IPC: F27B17/00
Filed: 1922-02-13
Abstract: 175,297. Otto & Co., Ges., Dr. C. Feb. 14, 1921, [Convention date]. Coke ovens.-In a horizontal-flued vertical " chamber " or coke oven the horizontal heating- flues are extended to form recuperators for heating the gas and air for combustion, adjacent flues being connected respectively with a waste gas chamber, and with air and gas preheating chambers of a recuperator. In one construction the heating-flues b of the ovens a are connected in pairs, and the upper flue of each pair is supplied with gas and air through the passages c, d respectively, while the lower one is connected to the exhaust flues i through the passages e. In a modified construction with two ovens end to end in the width of the bench, the h-eating-flues extend right across the bench between recuperators at the two ends, and the connections are such that in adjacent flues the heating-gases flow in opposite directions.
Patent GB-1463243-A (GB)
Title: Oil cleaner
IPC: C11B3/16
Filed: 1975-01-31
Abstract: 1463243 Centrifugal oil cleaner SERBOL 139 AB 31 Jan 1975 [8 Feb 1974] 4237/75 Heading B2P  A centrifugal oil cleaner comprises a hollow rotor 10 rotatably journalled in a housing 1 about a vertical axis, a dish-shaped member 14 located in the rotor interior spaced from the base of the rotor and having a downwardly directed rim 15 defining an annular gap 15' between its lower edge and the inner surface of the base of the rotor, and an inlet 12 for supplying oil to the space between the member 14 and the rotor base, the dimensions of the gap 15' and of the inlet 12 being such that the oil passes substantially radially outwards through the gap with a smaller speed than it passes through the inlet into the said space. Oil to be cleaned is pumped through a channel 5 in the housing 1 and a passage 7 in the rotor shaft 8 and exits into the space between the member 14 and the rotor base through a plurality of radial inlets 12. The oil issuing from the gap 15' at reduced speed flows in the direction of the arrows P inwardly against the direction of centrifugal force and upwardly towards outlet nozzles 16. Blades 13 integrally formed with the member 14 assist this flowing action. The contaminants which are heavier than the oil are acted upon by centrifugal force and deposited on the inner surface 19 of the rotor wall. The clean oil flows outwardly through the nozzles 16 via tangential openings 17 and produce a reaction which drives the rotor. The oil impinges on a cap 3 clamped to the housing and runs downwardly to the bottom of the housing and outwardly through a channel 6. The separated contaminants are sucked continuously or intermittently through radial tubes 18 which communicate through a channel 20 in a nut 24 and through a nipple 22 rotatably supported on the nut and connected to a suction source. The nut 24 serves to hold a cap 11 in sealing engagement with the rotor. In a modification there are no suction tubes and the nut 24 has no central bore, cleaning of the rotor being perfomed manually after releasing the caps 3, 11 when the rotor is stationary.
Patent GB-281137-A (GB)
Title: Improvements in or relating to ruled screens or gratings for photographic purposes
IPC: G03F5/02
Filed: 1927-02-15
Abstract: 281,137. Hausleiter, F. Feb. 15, 1927. Photo-mechanical screens. - The metal frame surrounding a glass line screen is formed directly on the glass, as by the chemical processes used for making metal mirrors, by galvanic plating processes, or by metal spraying processes. Such a frame, or a frame of the ordinary kind, may be finished by rendering at least one of its surfaces accurately parallel to the plane of the grating. Various forms of frame are illustrated. In that shown in Fig. 5, the grating lines are situated at the cemented contact face d of glass plates b, c, surrounded by a frame shown unfinished at e, and finished at e<1> with one face parallel to the plane of the grating.