baber/WOPTO huggingface dataset:
Patent GB-636006-A (GB)
Title: Manufacture of polyazo-dyestuffs
IPC: C09B35/20
Filed: 1947-03-20
Abstract: Asymmetrical polyazo-dyestuffs are obtained by coupling 1 mol of tetrazotized 3 : 31-dihydroxy-benzidine with 1 mol. of a component containing a sulphonic acid group, and further coupling the resulting diazo-azo compound with a component free from sulphonic acid groups in the presence of more than 25 per cent of pyridine calculated on the weight of the coupling mixture.  The coupling components may themselves be mono- or dis-azo-dyestuffs. Many suitable coupling components are mentioned, e.g., for the first step, sulphonic acids of pyrazalones, naphthols, amino-naphthols and also azo-dyestuffs derived by coupling 2-amino-5-hydroxynaphthalene-7-sulphonic acid with diazotized amino-benzene carboxylic acids, amino-benzene sulphonic acids and amino-azobenzene carboxylic acids; for the second step, naphthols, dihydroxy - naphthalenes, amino-naphthols and derivatives thereof, dihydroxy-quinolines and barbituric acid.  The procedure for carrying out the coupling in the presence of pyridine is the same as that of Specification 631,262, and the process may be combined with that of Specification 635,621.  The polyazo-dyestuffs are suitable for dyeing cellulose fibres such as cotton, linen and artificial silk and staple fibres of regenerated cellulose. They may be converted in substance, in the dyebath or on the fibre into complex metal compounds, e.g. of copper, chromium, iron, nickel or cobalt, e.g. by the process of Specification 455,274. Examples show the preparation of typical dyestuffs and the use of one of them for the dyeing of cotton.  Specification 609,300 also is referred to.
Patent GB-1479841-A (GB)
Title: Facsimile scanners
IPC: H04N1/03
Filed: 1975-02-24
Abstract: 1479841 Facsimile scanner WESTERN ELECTRIC CO Inc 24 Feb 1975 [25 Feb 1974] 7718/75 Heading H4F In a fascimile scanner successive lines of an original 11, Fig. 1, are imaged on to a 1500 element charge coupled image pick-up device (CCD) 17 by a lens 15. The optical path is folded by mirrors 18a-18d, Fig. 3. Scan lines are illuminated by a U-shaped fluorescent lamp 14 mounted together with lens 15, mirrors 18a- 18d and CCD 17 on a carriage 13 which traverses the underside of a transparent document support plate in a direction perpendicular to that of the scanned lines. Details of circuitry and the control system are described with reference to Figs. 2 and 4 (not shown). CCD is actuated 2000 times in one pass effectively providing a 2000 line frame having three million picture elements.
Patent GB-448727-A (GB)
Title: Improvements in and relating to glass to metal seals
IPC: H01J5/42
Filed: 1935-03-13
Abstract: 448,727. Uniting metal to vitreous material by heat. BRITISH THOMSONHOUSTON CO.. Ltd., Crown House, Aldwych, London. March 13, 1935, No. 7816. Convention date, March 17, 1934. [Class 39 (ii)] In a hermetic seal for a leading-in conductor of an electric discharge device, comprising a tubular glass section arranged in alignment with and between a pair of tubular metal sections, the adjacent glass and metal ends being sealed together and the leading-in conductor being sealed to one metal section, while the other metal section is adapted to be secured to the discharge device, the glass and metal sections have substantially the same thermal expansion characteristics over the entire temperature range between 0‹ C. and the softening temperature of the glass. In the example, a multi-strand cable 2 and a metal sleeve 3 surrounding its upper end are together welded or otherwise secured to a metal cap 4 which is closed at the top and provided with a flange 5 at the bottom for sealing, as by a butt-joint, to a relatively long glass cylinder 6. This sealing may be effected by a high-frequency furnace. At its other end the glass cylinder 6 is butt-sealed in a strain-free manner to a metal cylinder 7 which has an inwardly directed flange 8 at its upper end to facilitate the sealing, its lower end being provided with a flange 9 which is welded or otherwise secured to a metal plate 1 forming part of the electric discharge device. A solid metal rod 10 may be welded to the cap 4 to form a continuation of the conductor 2. Examples of suitable glasses and alloys which have the same thermal expansion characteristics over the entire temperature range between 0‹ C. and the softening temperature of the glass, and are used in making the glass part 6 and metal parts 4, 7, are describedin Specification 449,807, [Group II].
Patent GB-643548-A (GB)
Title: Improvements in or relating to refrigerating systems
IPC: F25D11/02
Filed: 1948-03-16
Abstract: 643,548. Refrigerating. PRESSED STEEL CO., Ltd., and NOLCKEN, W. G. March 16, 1948, No. 7826. '[Class 29] In a refrigerating system including an evaporator unit 18 for cooling a cabinet 11, the inner liner 12 of the cabinet is cooled by a secondary system comprising a condenser section 31 in contact with the evaporator 18 and an evaporating section 30 feeding into a liquid-vapour separator 32 of capacity sufficient to hold all the liquid refrigerant in the secondary system, the arrangement being such that refrigerant flows downwardly through the evaporator 30. The evaporator is preferably of constant slope downwardly and the refrigerant vapour returns to the condenser 31 by a conduit 33. According to the Provisional Specification a gas charged bellows or diaphragm capsule may be incorporated in the secondary system for control purposes and the pressure in the control device may be adjusted by means external of the refrigerated space or a thermostatic or pressure control may be incorporated in the secondary system.
Patent GB-1328944-A (GB)
Title: Vacuum cleaning implement
IPC: A47L9/06
Filed: 1972-02-21
Abstract: 1328944 Suction cleaner nozzles ELECTROLUX Ltd 21 Feb 1972 [26 Feb 1971] 7903/72 Heading A4F Brushes 20 are movable relative to a suction cleaner nozzle 15, being attached by bridges 21 to a flexible diaphragm 22. Cups 26, which act on the diaphragm 22, are spring biased by springs 27 so that the brushes 20 are normally extended as shown. Suction conduit 13 is in communication with chamber 24 via a funnel 29, holes 30, 31 and slit 32. When operating on a hard surface, air is preferentially directed between, i.e. parallel to, the brushes 20 into the funnel 29 so as to increase the pressure within the chamber 24 and maintain the brushes 20 in the position shown. On a soft surface, however, the gaps between the brushes 20 are closed by the soft surface stopping air being preferentially directed to the funnel 29 thereby allowing a negative pressure to exist in the chamber 24 which overcomes the spring biasing so as to retract the brushes 20.
Patent GB-1425261-A (GB)
Title: Nitroimidazolyl-pyrimidines
IPC: C07D409/14
Filed: 1973-02-19
Abstract: 1425261 [5 - Nitro - 2 - imidazolyl] - pyrimidines SCHERING AG 19 Feb 1973 [19 Feb 1972 7 Nov 1972] 7941/73 Heading C2C Novel compounds I: in which X is C 1-4  alkyl; R 1  and R 2  are hydrogen C 1-4  alkyl, phenyl, trifluoromethyl or a monocyclic heterocyclic group; R 3  is hydrogen C 1-4  alkyl, C 2-4  hydroxyalkoxy (which may be esterified by a C 1-4  alkane carboxylic acid) or C 2-6  oxo-alkyl and, when R 1  or R 2  is phenyl, R 3  may also represent an alkylene group connected to the 2-position of the phenyl ring, and their acid addition salts are prepared by reacting 5 - nitro - 1 - (X) - 2 - imidazolecarboxamidine (II) or a salt thereof with a #-decarbonyl compound III: R 1 -CO-CH(R 3 )-CO-R 2 , or a derivative thereof, and if desired hydrolysing any acyloxy group or esterifying any free hydroxy group. Reactive derivatives of compounds III are an acetal or, when R 1  and R 2  are hydrogen, an enamine. Compounds I prepared are those in which X is methyl, R 1  and R 2  are selected from hydrogen, methyl ethyl, trifluoromethyl, thienyl and phenyl and R 3  is hydrogen 2-acetoxyethoxy, 2-hydroxyethoxy, ethyl, or 2-acetylethyl or the pyrimidine ring and R 1 , R 2  and R 3  form a 4-methyl-5,6-dihydrobenzo[h]- quinazolin-2-yl radical.  Compounds III are prepared by reacting a C 1-4  alkyl ester of the corresponding carboximidic acid with ammonia or ammonium chloride. Compounds I are anti-microbial agents and form with a carrier a pharmaceutical composition which may be administered orally or topically.
Patent GB-1517242-A (GB)
Title: Integrated circuits
IPC: H01L21/76
Filed: 1976-03-01
Abstract: 1517242 Integrated circuits INTERNATIONAL BUSINESS MACHINES CORP 1 March 1976 [16 April 1975] 8011/76 Heading H1K In the manufacture of a recessed oxide isolated integrated circuit, a composite mask is formed by providing a first layer 14 of silicon dioxide in a silicon substrate 10, forming an opening 15 in the first layer to expose a portion of the substrate which surrounds a further portion of the substrate covered by the first layer providing a second layer 16 of silicon nitride or aluminium oxide on the first layer and in the opening, and thus forming an opening 17 in registration with the opening in the first layer, the opening 17 being of a smaller size than the opening 15 in the first layer so that walls of the the opening 15 are bordered by a portion of the second layer in direct contact with the substrate this being followed by thermal oxidation of the exposed substrate thereby forming a recessed oxide region surrounding a substrate portion wherein a circuit component is formed. In the embodiment described, silicon nitride layer portions in contact with the silicon substrate 10 occupies 5-10% of the total surface area. Using the mask, recessed silicon dioxide regions 19 are formed by chemically etching regions 18 and then oxidizing the recesses till the oxidized regions 19 are coplanar with the substrate and also extend to buried P + regions 12. Also, using the mask, an impurity may be diffused through the regions 19 into the substrate. The P + regions 12 and an N + region 11 outdiffuse from a wafer 10 during the epitaxial deposition of a layer 13. Semiconductor devices are formed in the epitaxial layer 13 laterally surrounded by the regions 19.
Patent GB-261973-A (GB)
Title: Wood paving blocks
IPC: E01C5/14
Filed: 1926-03-24
Abstract: 261,973. Petken, J. J., and Gotts, A. March 24, 1926. Flooring b lo c k s.-Wood flooring and paving blocks are provided with intercommunicating longitudinal and transverse drainage channels b in the lower surface and preferably also with upwardlyextending saw cuts d to promote resiliency and allow for expansion.
Patent GB-231505-A (GB)
Title: Improvements in and relating to relays for the protection of alternating electric current systems
IPC: H02H3/42
Filed: 1925-03-25
Abstract: 231,505. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitats-Ges.). March 25, 1924, [Convention date]. Cut-out arrangements.-The disturbance of the equilibrium of the currents in individual phases which results in the case of an earth fault ;s used to assist the effect of the currents in the individual phases to reduce the time-lag of overload' time-lag relays cutting out defective sections. As shown in Fig. 1, currant-transformers n feed the current coils b of the relays, on the cores of which are placed auxiliary coils c connected to auxiliary current-transformers d, the secondaries of which are connected by equalizing lines e. Normally the coils c are without current, but on earth fault they support the coils b. In the modification shown in Fig. 2, the coils c are fed from transformers placed into the main lines and connected asymmetrically.
Patent GB-1527826-A (GB)
Title: Internally-meshing gear pump
IPC: F04C14/20
Filed: 1977-02-25
Abstract: 1527826 Rotary positive-displacement fluidmachines BRODRENE GRAM A/S 25 Feb 1977 [25 Feb 1976] 08065/75 Heading F1F In an internally-meshing gear pump the inner gear-wheel 27 is mounted rotatively on a fixed shaft 24 that extends from a housing end-cover 15 from which also extends a filling piece, or "blocking member", 31, the end cover being pivotable about the axis 6 of the outer gear-wheel 8 so as to bring a duct 33 in the end cover into register with the working-fluid inlet 2 and outlet 3 and displace the gear-wheels and blocking member circumferentially sufficiently to allow a cleansing liquid to flow freely from the inlet to the outlet, as indicated by a broken line in Fig. 4. The circumferential length of the block member may be reduced and the circumferential displacement of the gearwheels from the normal position thereof increased accordingly, Figs. 5-9 (not shown).
Patent GB-127863-A (GB)
Title: Improvements in or relating to Machine-guns.
Inventor: DIBOVSKY VICTOR VLADIMIROVITCH
IPC: F41A3/82
Filed: 1917-06-05
Abstract: 127,863. Dibovsky, V. V. June 5, 1917. Machine guns. - Relates to machine guns, such as the Vickers gun, having a main crank C operating between the sides of the gun casing, and consists in providing a spring buffer B having a base B<1> and a sliding head BH which intercepts the main crank near the end of its recoil movement, the axis of the buffer being normal to the crank-arms, which strike against it. A hard cylindrical roller R may be provided in the contacting surface of the head BH, and the base B<1> may be secured by a pin P and have a flat B<10> to rest against the gun casing.
Patent GB-651328-A (GB)
Title: Improvements in or relating to apparatus and methods for feeding pulp to paper-making machines
IPC: D21F1/06
Filed: 1947-03-25
Abstract: 651,328. Feeding pulp to paper-making machines. STEVENS, A. H. (Beloit Iron Works). March 25, 1947, No. 8087. [Class 96] Pulp flows into the closed head-box 10 of a paper-making-machine through an inlet 37 and out through a slice 40, the head of pulp in the box being maintained at a desired level P by locating a vent 41 at that level to regulate the absolute pressure of air above the pulp so as to bring the air and pulp into equilibrium at the level P. Air may be fed to the box by a pump 33 and pulp may be supplied by a pump 18. When pump 33 gains on pump 18 the pulp level tends to fall and air is vented, but, if pump 18 gains the level tends to rise and pulp is vented and a position. of equilibrium is thus reached. A conduit 43 may connect the vent with a white water pit 14. The pulp may flow to the head-box through a counter-current flow evener 20 and a rectifier roll 24. In a modification, the vent is connected by a pipe with the top of a separating tank which is connected to a vacuum pump and the tank is drained to the white water pit by a pipe, e.g. a barometric leg, sealed by water in the pit. A rectifier roll may be fitted in the head-box across the slice.
Patent GB-637869-A (GB)
Title: Improvements in wiring systems for radio and like electrical apparatus
IPC: H05K7/02
Filed: 1947-03-25
Abstract: 637,869. Binding-posts ; supporting conductors. PHILIPS LAMPS, Ltd. March 25, 1947, No. 8098. Convention date, July 3, 1944. [Classes 36 and 38 (i)] In a wiring system for radio or like electrical apparatus, insulating rods mounted on a plate are formed with holes through which one or more connecting wires are passed, the connecting wire or wires being then bent in the neighbourhood of the rods and secured to one or more other wires for the purpose of connecting electrical components so that the wiring is wholly or in part supported mechanically and completed electrically without the use of metallic parts previously secured to the rods. As shown, two rods of insulating material 3, 31 are attached to a plate 1 by means of a threaded extension. The connecting wires from the components are passed through holes in the rods, and bent round in the form of a hook, the holes then being filled with solder. The hook portion may be used as a soldering tag for the connection of other wires, and small components may be supported by their connecting wires. The holes should preferably be widened at their ends. The insulating rods may consist of metal over part of their length.
Patent GB-273618-A (GB)
Title: Improvements in vacuum piston pumps
IPC: F04B39/08
Filed: 1927-03-25
Abstract: 273,618. Bennet, J. A. R. March 25, 1927. Connecting-rods. - The piston 10 of a vacuum pump is pressed into contact with the fixed cylinder cover during the final portion of the delivery stroke. It is driven from the crank shaft by a rigid rod 29 and a yielding jointed rod 32, 36 connected to the ends of a lever 28 on the crank pin. The rods 29, 36 are connected by a link 40. A spring 39 is disposed between adjacent parts on the ends of the rods 32, 36.
Patent GB-744595-A (GB)
Title: Improvements in mechanical props
IPC: E21D15/26
Filed: 1952-04-02
Abstract: 744,595. Pit props. HANDLEY, J., and UNION TOTALISATOR CO., Ltd. April 2, 1953 [April 2, 1952; Jan. 2, 1953], Nos. 8349/52 and 166/53. Class 20(2). [Also in Group XXX] A pit-prop comprises three members 21, 32, 34, Fig. 1 (Complete Specification) in screw-threaded engagement the intermediate member 32 having a quick pitch screw thread engaged by a clamp nut 23 on the lower member 21 and telescoping within the lower member when the mine roof pressure exceeds the pressure to which the clamp is adjusted by bolt and nut 25. Tube member 32 then turns within the member 21 and turns on the opposite hand screw thread of the member 34 and lowers this member. The clamp nut 23 and the prop are released by a cam lever 28. A modified clamp nut comprises a nut split radially in three and clamped together in a housing by a screw plate. The prop is extended by turning the member 32 by a star plate 33 and the member 34 by wings 35. In Fig. 5 (not shown) the intermediate member 36 is external, encloses the upper and lower members and has slots 41 so that it can be compressed by the clamp 43 which is released by turning a lever to move dogs thereon from a position in which they abut fixed dogs to a position in which the two sets of dogs mesh. A prop is described in the first Provisional Specification comprising a shaft 1, Fig. 1, with a coarse screw thread which at a certain load will run through a split nut 2 clamped on the shaft by an eccentric 4 and lever 5. A compensating bar 7 adjusted by nuts 10, 11 is arranged between the eccentric and the split nut, a bevelled face 6 of the bar easing the pressure on the split nut when the prop shortens under load. A second compensating bar may be connected at one end to the first bar by a cantilever and at the other end to the head of the prop by adjusting nuts. The prop is set by a ratchet wheel 17 and lever operated pawls at both sides released by projections engaging the frame when moved beyond the normal stroke. The prop is mounted on a universal joint 31. Arrangements of the compensating bar with various clamping nuts are described. The second Provisional Specification describes strain gauges with measuring bars to indicate the yield of the prop.
Patent GB-748086-A (GB)
Title: Improvements in or relating to apparatus for the formation of mole drains
IPC: E02F5/10
Filed: 1953-03-26
Abstract: 748,086. Mole - ploughs. COOPER, T. March 22, 1954 [March 26, 1953], No. 8410/53. Class 6 (1). An arrangement for forming straight, uniformly - sloping moledrains irrespective of surface irregularities comprises an arched frame 34 supporting the front end of the main beam 1 of a mole-plough 4, the beam carrying a sight 45 which can be kept aligned with fixed boning rods 47 erected in the field, by raising and lowering the front end of the beam through hoisting tackle 36, 38 on the frame 34. The mole 4 is carried by a stem 3 held between plates 6 by a pin 8 selectively passing through aligned holes. An arched wheeled frame 12, 13, 14 is pivoted to a part 16 at the front of the beam and carries a hand-winch 20, 24 from which the rear end of the beam is suspended by cables 17 enabling the mole to be raised clear of the ground or lowered into use. The frame 34 carries an hydraulic jack 36 connected by chains 38 and links 41 to a skid 43 on the beam. The frame 34 is also mounted on skids 35 and connected by chains 44 to a link 28 on the front of the beam 1, the whole structure being drawn across the field by cables 31 attached to a winch on a tractor. An operator at E (Fig. 3) operates the handle 37 of the jack 36 to maintain the sight 45 aligned with the fixed boning rods 47 as the plough progresses. To slice away small protuberances a flat blade 48 is pivoted to the front of the beam 1 and is raised and lowered by a hand lever 51, a link 50 and a vertical arm 49 which is also sharpened to form a vertical blade.
Patent GB-907072-A (GB)
Title: Improvements in time switch
IPC: G04C21/36
Filed: 1961-03-08
Abstract: 907,072. Time switches. GENERAL ELECTRIC CO. March 8, 1961 [March 11, 1960], No.8466/61. Class 38 (5). A time switch driven by a synchronous motor 8 has means for sounding an alarm a predetermined time after the switching operation. The alarm is of the vibrating type, using the leakage flux of the motor and comprises an arm 12 striking a nut 14 and is released by an axial movement of lever 15 under the influence of two cam plates 16, 20, one of which rotates with the hour hand and the other is set to the desired time. The axial movement is also used to displace lever 28 which acts to open or close switch contact 25 through lever 33. Pushbuttons 48 ("ON"), 49 ("AUTO") and 50 ("OFF") are linked to the mechanism to fulfil their functions.
Patent GB-864011-A (GB)
Title: Diazo type printing material and a method of making diazo type prints
IPC: G03C1/52
Filed: 1958-03-17
Abstract: 864,011. Diazotype materials and processes. LANDAU, R. March 17, 1958 [March 16, 1957], No. 8513/58. Drawings to Specification. Class 98(2) Diazotype material contains one diazo compound which is converted by radiation in a given wavelength band into a coupling component, and another diazo compound of greater coupling energy than the first which will couple with the coupling component formed from the first diazo compound and which is decomposed by radiation of a wavelength band different from the first band. The wavelength bands may be ultra-violet and infra-red or visible light. The material is first exposed through the document to be copied using radiation of one of the wavelengths, and then the original is removed and the material given a uniform second exposure of the second wavelength. If the diazo which gives the coupler is sensitive to ultra-violet and the other diazo is sensitive to infra-red, then a first exposure to infra-red and a second exposure to ultra-violet gives a positive. Conversely, if the diazo which gives the coupler is sensitive to infra-red and the other diazo to ultra-violet, a positive is produced by a first exposure to ultraviolet and a second exposure to infra-red. Reversing the order of exposure in either case yields a negative. Diazo compounds which produce couplers and diazos of the normal type are listed which are sensitive to infra-red or ultra-violet light only.
Patent GB-358857-A (GB)
Title: Improvements in or relating to suspensions for motor vehicles
IPC: F16F1/22
Filed: 1931-03-19
Abstract: 358,857. Vehicle suspension systems. WILMART, P., 42A, Rue de la Longue Haie, Brussels. March 19, 1931, No. 8515. Convention date, March 20, 1930. Addition to 345,526. [Class 108 (ii).] The apparatus described in the parent Specification for reducing lateral tilting of the frame of a motor vehicle relatively to the axle is modified in certain details. The flattened ends 11, Fig. 2, of the tubular cross shaft are held in clips formed by the upper and lower blades 12a, 12b of the longitudinal arms, the blades being secured to one another and to the tube by rivets or bolts. The connection between the arm and the main spring 22 comprises a block 34 secured to the lower blade 12b and a rubber block 37 engaging a recess in the block 34. The upper side of the block 34 is recessed for a clip 26 and the sides of the block are shaped to form two point bearings 40 to prevent excessive compression of the rubber block. The arms of the device may be made more rigid, the transverse tube may be divided and an elastic coupling, Fig. 4, inserted between the two parts of the tube. Each end of the tube carries a fourarmed spider 42, 44 with springs interposed between the arms.