baber/WOPTO huggingface dataset:
Patent GB-778166-A (GB)
Title: Improvements in ultrasonic testing apparatus
Inventor: BOXCER JOHN REGINALD
IPC: G01N29/24
Filed: 1954-07-02
Abstract: 778,166. Ultrasonic inspection devices. BABCOCK & WILCOX, Ltd. July 1, 1955 [July 2, 1954], No. 19531/54. Class 118 (2). A probe for inspecting an object by means of ultrasonic impulses is provided with means for testing the coupling at the probe-object interface by detecting reflection from a surface within the object. The body of the probe comprises two sections 1 and 2 of " Perspex " (R.T.M.) acoustically insulated by a laminated layer 51 of alternate thin plastic sheets and metal foil, and mounted as shown in a single aperture in a rectangular plate 8. Each section carries two piezo-electric crystal transducers, one mounted on the top, substantially parallel to the coupling surface 14 or 15 contacting the workpiece, and one mounted on an end face which is at an angle of approximately 53 degrees. The crystals 3, 5 mounted at an angle are for inspection of the object for flaws, while the other two crystals 4, 6 are for assessing the degree of coupling. Section 1 carries the transmitting transducers while section 2 carries the respective receiving transducers. As shown in Fig. 4, separate connecting sockets 31 and 32 are provided for the two crystals on transmitting section 1, while those on section 2 are connected in parallel to one socket 46. The assembly is carried in a jig (Fig. 5, not shown), as described in Specification 778,168 for fitting around a pipe to be tested. The coupling surfaces 14, 15 of sections 1 and 2 are at a slight angle to permit symmetrical tangential contact with the pipe. The crystals 4, 6 are likewise slightly inclined to provide some focusing. The normal axes or lines of action of crystals 3 and 4 intersect approximately on the surface 14 at its point of contact with the pipe under test. Crystals 5 and 6 are similarly arranged with respect to surface 15. The system of use is shown diagrammatically in Figs. 6 and 7. A pulse generator 61 supplies ultrasonic pulses to crystal 3 and synchronizes a sweep circuit 62 for cathode-ray tube 63. Echoes received, e.g. from a flaw 110 in pipe 109, by crystal 5 are fed via amplifier 64 to the C.R.T. 63. To assist in estimating the size of flaw by indicating the degree of coupling, the echo from the inner wall 112 of the pipe 109 is also displayed on the C.R.T. 63 by using crystals 4 and 6, but to avoid confusion of this echo with flaw echoes an electronic delay circuit 65 (preferably adjustable) is inserted in the pulse supply to crystal 4. In a modification, instead of the delay circuit 65, an ultrasonic delay line may be disposed between crystal 6 and amplifier 64. In this case the crystals 5 and 6 must be provided with separate output sockets. The time taken for the pulse to travel from crystal 4 to crystal 6 may be measured in known manner to provide a measurement of the pipe thickness.
Patent GB-299351-A (GB)
Title: Improvements in or relating to selector switches for automatic telephone systems
IPC: H01H67/12
Filed: 1927-07-23
Abstract: 299,351. Telefonaktiebolaget L. M. Ericsson, and Hultman, C. A. W. July 23, 1927. Automatic exchange selectors having wipers moved in two directions in the same plane and in which the contact bank consists of bundles of wires arranged in parallel planes at right-angles to the plane of movement of the wipers, are provided with two or more sets of wipers mounted on a single wiper-carrier 1. The two movements may take place as shown in Fig. 1, the first in the longitudinal direction of the carrier 1 and the second in a direction perpendicular thereto, or the first movement may be angular and the second radial. Fig. 3 shows the driving mechanism for such a selector. The wiper-carrying arms 13, 14 are mounted on a carriage 16 movable by rollers 17 on a second carriage 18 which is itself movable by rollers 19 on rails 20. The base-board 21 carries a fixed driving pulley 28 geared to an electric motor and a second fixed pulley 29, whilst the carriage 18 carries four further pulleys 30 - - 33, the pulley 33 and a toothed bar 22 being provided with locking electromagnets 43, 25. A wire 34 attached at one end to pulley 28 passes over pulley 30 and round pulley 33 to which its other end is attached. A second wire 36 (shown in dotted lines) passes from pulley 28 over pulleys 29, 31, 32, 31, 30 to pulleys 33, and is attached at intermediate points 39, 40 to the carriage 16. The first movement of the wipers parallel to and outside the bank is effected with magnet 25 energized and magnet 43 de-energized so that both carriages move together along the rails 20. For the second movement of the wipers into the bank, magnet 25 is de-energized and magnet 43 energized so that carriage 16 moves relatively to carriage 18. The movement of the wiper arms 13, 14 is guided by rollers 47 and bent-over lugs 50. The attachments of the wire 36 to the carriage 16 are by means of pivoted arms 54 which may be clamped in any position so as to permit adjustment of the tension of the
Patent GB-749415-A (GB)
Title: Drill pipe protector
IPC: E21B17/10
Filed: 1954-07-05
Abstract: 749.415. Earth-boring apparatus. BORGWARNER CORPORATION. July 5, 1954 [Feb. 5, 1954], No. 19640/54. Class 85 A drill pipe protector of the longitudinally split type is made of rubber or rubber like material having at least one flexible metal band 15 embedded therein. Inner and outer arcuate lock members 16, 18 are riveted to the ends of the band; the member 16 being received in a slot 20 formed between the member 16 and a stepped member 21 which is riveted to the band and the member 16. Contraction of the band is effected by a cam 25, 26 which is rotatably mounted in the member 18 and engages an oval or elliptical-shaped opening in the member 16; the cam being located by a flange 29 and a retainer ring 32 of malleable metal. Reinforcing bars 52, 53 having stiffening flanges respectively (see Fig. 2, not shown) are provided in order to prevent radial outward movement of the marginal portions of the collar on opposite sides of the split and to cause the said marginal portions to be pressed firmly together.
Patent GB-335913-A (GB)
Title: Improvements in method of the manufacture of urea
IPC: C07C273/04
Filed: 1929-06-27
Abstract: 335,913. Triggs, W. W., (Lamb, A. B.). June 27, 1929. Urea. - A cyclic process for the manufacture of urea comprises the steps of continuously and separately introducing liquid ammonia and liquid carbon dioxide into an autoclave maintained at suitable elevated temperature and pressure, continuously withdrawing the melt containing urea from the autoclave, separating by distillation the unconverted ammonia and carbon dioxide from the melt and thereafter from each other, drying, compressing, and liquefying the separated ammonia and carbon dioxide, and reintroducing them in liquid form into the autoclave. The ammonia and carbon dioxide are derived by suitable known methods from readily available materials such as coke or coal, hydrocarbons, air, and water. In an example, coke, air, and water from sources 1, 2, and 3 respectively are introduced into a gas producer 4, and the resulting gas mixture is catalytically treated in a chamber 5 with steam brought from the source 3 by a pipe 3A so as to convert the carbon monoxide into carbon dioxide. The mixture of nitrogen, hydrogen, and carbon dioxide thus produced is passed into a scrubber 6 through which an ammoniacal solution, preferably containing an ammonium salt such as the nitrate or chloride, is flowing. The carbon dioxide is absorbed, and the remaining gases pass into an auxiliary scrubber 7 wherein traces of ammonia are removed by means of water or a solution of an ammonium salt.. Any oxides of carbon remaining in the gases are removed in the chamber 9 by suitable means, and the mixture of nitrogen and hydrogen then passes through a pipe 10 into a.n ammonia converter (not shown), the ammonia produced being conveyed into an autoclave 12 by a pipe 13, after being compressed and liquefied. The solution containing dissolved carbon dioxide leaving the scrubber 6 is led by a pipe 14 to a regenerator 15, in which the carbon dioxide is driven off by heat, passing thence through a pipe 17 into an auxiliary scrubber 16, in which traces of ammonia are removed by liquid from the scrubber 7. The liquid leaving the scrubber 16 passes through a pipe 18 back to the regenerator 15, and thence is led through a pipe 20 in part into an ammonia still 19, another part being led by a pipe 21 to the scrubber 6. The ammonia driven off in the still 19 passes through a pipe 22 into the autoclave 12 after passing through a compressor and pump (not shown), while the solution leaving the still 19 is conveyed by a pipe 28 to the scrubber 7. The carbon dioxide leaving the scrubber 16 is also led by a pipe 23 to the autoclave 12, after passing through a liquefying apparatus. Any excess of carbon dioxide over the amount required is led off at the point 24. The solution containing urea discharged from the autoclave 12 is led to a still 25, wherein heat is applied to expel the ammonia and carbon dioxide, which are then returned to the regenerator 15 through a pipe 26. The urea solution freed from carbon dioxide and ammonia is led to an evaporator 27.
Patent GB-573328-A (GB)
Title: Improvements in pool type cathode metal vapour arc rectifiers
IPC: H01J13/08
Filed: 1943-11-26
Abstract: 573,328. Metal vapour rectifiers. EDISON SWAN ELECTRIC CO., Ltd., and CANE, P. E. Nov. 26, 1943, No. 19774. [Class 39 (i)] A starting electrode for a metal vapour rectifier carries with it some of the cathode liquid as it is withdrawn therefrom so that the starting arc is drawn between the main pool and the withdrawn liquid. In the form shown, the electrode 7 has an insulating sleeve 8 and a cup 6 of insulating material 6 to retain some mercury 5 when it is raised from the pool 3. Specification 7003/15, [Class 39 (i)], is referred to.
Patent GB-268625-A (GB)
Title: Improvements in driving ropes
IPC: F16G9/00
Filed: 1926-08-11
Abstract: 268,625. Robinson Bros. (Oldham), Ltd., and Wild, H. Aug. 11, 1926. Made by special methods of forming and twisting.-A driving-rope is formed from two or more strands (three being shown), each built up from a twisted core 1, 2 of two individually twisted bunches of cotton or hemp covered with lengths 3 of similar twisted material, the direction of wind preferably being the same in both elements and the direction of wind of the strands to make the rope being opposite to that of the said elements. The central cores are flexible but do not stretch readily.
Patent GB-535374-A (GB)
Title: Improved anti-static photographic film
IPC: G03C1/85
Filed: 1939-07-07
Abstract: 535,374. Photographic films. KODAK, Ltd. (Eastman Kodak Co.). July 7, 1939, No. 19819. [Class 98 (ii)] A photographic film comprises a support and a sensitive layer thereon in which the sensitive layer has applied thereto a layer consisting of a colloid binding agent and an inert material or contains such agent and material, the diameter of the particles of the material being not more than 0.01 mm. and the particles of the material providing 20 to100 minute irregularities per square mm. of film surface. The film may comprise a support and a sensitive layer thereon to the front surface of which sensitive layer has been applied a layer of a colloid binding agent containing a finely divided inert material in the form of particles in quantities sufficient to produce minute irregularities in the surface but insufficient to render the film visibly matte. The particles may be of silica, starch (particularly rice starch), resins (such as polymethyl methacrylate, polyvinyl acetate, polyvinyl alcohol, co-polymers of styrene and methyl methacrylate, and mixtures of polyacrylate resins with cellulose ethers, and cellulose derivatives (such as cellulose acetate propionate and ethyl cellulose). The support may be cellulose ester or paper. The substance may have a refractive index approximately the same as the material of the layer and may be soluble or removable in the processing baths. The particles may also be added to a fine-grained sensitive emulsion to be applied over a substratum of ordinary type. According to the Provisional Specification a roughened surface may be produced by passage over sand-blasted or embossed rolls. Matting substances may be incorporated in the support itself. The layer may be applied as a substratum or to the rear of the support. One or both sides of an X-ray film support may be so coated prior to emulsion coating.
Patent GB-1135308-A (GB)
Title: Hydraulic control valve
Inventor: GUINOT GABRIEL
IPC: F16D65/28
Filed: 1967-05-01
Abstract: 1,135,308. Valves; fluid pressure brakes. POCLAIN. 1 May, 1967 [13 May, 1966], No. 20004/67. Headings F2F and F2V. [Also in Division F1] A spool valve for supplying and relieving hydraulic pressure to and from a single-acting cylinder e.g., the brake ram A of a winch winder B at the same time as hydraulic pressure is supplied to and relieved from one or other of two lines leading from a distributor C to a reversible motor driving the winch comprises a chamber 19 continuously connected by a duct 3 to the ram cylinder A and also connected either to a vent chamber 20 of the valve or to a pressure chamber 9 thereof according to whether the spool is held by a spring 22 in the position shown or is urged to the left by fluid pressure in either of the motor supply lines being admitted through ducts 5, 6 to the ends of pilot pistons 10, 17; the chamber 9 being pressurized from said motor supply lines through ducts 11, 14 and non- return valves 12, 15. In operation and to wind in the winch, distributor C is set to pressurize the motor supply line connected to valve duct 5 resulting in piston 10 and hence valve spool 2 being displaced against the spring 22, and pressure in chamber 9 is transmitted through chamber 19 and duct 3 to lift the ram A and remove the brake.
Patent GB-1550555-A (GB)
Title: Toner powder
IPC: G03G9/08
Filed: 1977-05-12
Abstract: The positively chargeable toner powder essentially comprises finely divided, coloured toner particles. The toner particles contain an insulating thermoplastic resin, colorant materials and a polarity-control agent; the thermoplastic resin comprises at least 50 % by weight of an epoxy resin having an epoxy equivalent weight of at least 10,000, where at least 5 % of the epoxide groups of the resin are able to react with a monofunctional carboxylic acid and/or a monofunctional phenol which, apart from the carboxyl or hydroxyl group, respectively, contain(s) no substituents which are able to react with the epoxide groups of the resin under the conditions of the preparation of the toner powder; at most 95 % of the epoxide groups of the resin are modified by intermolecular reaction or by crosslinking with the aid of a polyfunctional epoxy curing agent.
Patent GB-1299025-A (GB)
Title: Timed cycle warp stop-motion control for weaving looms
IPC: D03D51/00
Filed: 1971-04-19
Abstract: 1299025 Looms; automatically stopping SINGER CO 19 April 1971 [13 Feb 1970] 20029/71 Heading D1E A loom with a shipper handle 10 and a solenoid operated knock-off mechanism 13, wherein a stop motion connects rods 14, 15 so that a cam 12 may knock off the handle 10 at a given point in the loom cycle, has an electronic circuit controlling the solenoid 16 so that, after knock off, the solenoid is reenergised ready for restarting without the necessity of manually switching the circuit Reference has been directed by the Comptroller to Specification 1209728. (For Figure see next column)
Patent GB-583328-A (GB)
Title: Improvements in and relating to electrical fuses
IPC: H01H85/055
Filed: 1944-10-18
Abstract: 583,328. Cut-outs. DORMAN &. SMITH, Ltd., and ATHERTON, T. Oct. 18, 1944, No. 20138. [Class 38 (i)] A fusible element comprises a short length of circular silver wire, flattened over a portion (e.g., <1>/32 in. to “ in.) of its length, the flattened portion being surrounded by a globule of low melting-point metal. The flattened portion presents a greater surface area to the low melting-point metal and thus rupture occurs after a shorter time interval than if the shape were unaltered, thereby reducing the amount of heat transmitted to the terminal ends. The element may be enclosed in a cartridge.
Patent GB-202072-A (GB)
Abstract: 202,072. British Thomson - Houston Co., Ltd., and Kingwell, K. F. May 19, 1922. Making metal fabrics; corrugating; bending- formers.-A machine for bending or shaping wire &c., particularly for forming grids for electrical resistances, comprises two adjustably-pivoted arms which fold a continuous length of wire alternately in opposite directions on former blocks. The frame 1 carries sliding members 2, 3 adjustable by screws 8 and provided with pivoted arms 4, 5 operated through quadrant gears 9, 10 by handles 11, 12 respectively. The wire 13 is folded on grooved former blocks 14, which are retained by spring stops 21 between the frame 1 and a spring-pressed plate 20. The former blocks are inserted in turn beneath the pressure plate by means of a sliding block 23, Fig. 4, actuated through toggle-levers from a pedal 26. In operating the machine from the position shown in Fig. 3, the lever 4 is swung out of position, a fresh former block inserted, and the arm 5 rotated until it engages the block. The arm 5 is then swung out of position, another block inserted, and the next loop formed by the arm 4. In order to adapt the machine to form grids of various shapes the pivoted arms may be in two portions secured by the cylindrical projection 32 and tongue 35 as shown in Fig. 7. For forming continuous grids having loops of various shapes in definite sequence, an indicating-device, Fig. 11, may be employed. A disc 37 is keyed to a spindle 38 carrying a ratchet-wheel operated by pawls actuated by a disc 46. The wire is passed through a guide 52 mounted on a sliding bar 51 so that at each operation of the pivoted arms the projection 50 on the guide engages pins 48, 49 to operate the ratchet mechanism. The disc 37 is provided with a cover having a sight opening through which marks on the disc which indicate the various formers and end portions required may be observed.
Patent GB-376022-A (GB)
Title: Improvements in or relating to the production of rubber cements
IPC: C08K5/07
Filed: 1931-07-14
Abstract: In making a rubber cement, unvulcanized rubber is masticated or heat-softened, and to it is added a small proportion of a "desolvating" agent and subsequently a larger proportion of a rubber solvent.  The term "desolvating" agent is used to indicate organic liquids which have little swelling action on rubber and includes lower aldehydes, ketones, alcohols, esters, fatty acids, primary aromatic amines, aromatic nitro compounds, diesters of dicarboxylic acids, chlorhydrins and nitriles of which a list of specific examples is given.  A small amount of a soap soluble in organic solvents, such as zinc or lead oleate or laurate, triethanolamine oleate may also be added to the rubber. In an example alcohol is added to a rubber mix to give 92,1 per cent rubber mix and 7,9 per cent alcohol, after which naphtha is added to give a cement containing 60,6 per cent rubber mix.  The cement may be dispersed in water with the aid of a protective colloid, to form a medium for dipping or electrophoretic deposition.ALSO:In making a rubber cement, unvulcanized rubber is masticated or heat-softened, and to it is added a small proportion of a "desolvating" agent and subsequently a larger proportion of a rubber solvent.  The term "desolvating" agent is used to indicate organic liquids which have little swelling action on rubber and includes lower aldehydes, ketones, alcohols, esters, fatty acids, primary aromatic amines, aromatic nitro compounds, diesters of dicarboxylic acids, chlorhydrins and nitriles, of which a list of specific examples is given.  A small amount of a soap soluble in organic solvents, such as zinc or lead oleate or laurate, triethanolamine oleate may also be added to the rubber. In an example alcohol is added to a rubber mix to give 92,1 per cent rubber mix, and 7,9 per cent alcohol, after which naphtha is added to give a cement containing 60,6 per cent rubber mix. The cement may be used as a dipping cement or be dispersed in water with the aid of a protective colloid, to form a medium for dipping or electrophoretic deposition.
Patent GB-651675-A (GB)
Title: Improvements relating to stop mechanism for spinning machines
IPC: D01H13/18
Filed: 1948-07-29
Abstract: 651,675. Stop-mechanism for yarn spinning machines. MACKIE & SONS, Ltd., J., and MACKIE, J. P. July 29, 1948, Nos. 20275/48 and 19966/49. [Class 120(ii)] In a stop mechanism for spinning machines of the type wherein a lightly loaded detector 9 serves, when released, to introduce a relay action deriving power from a driven member, such as 4,.,of the spinning head to bring into action the parts of the mechanism which stop delivery of the sliver to be spun, the detector 9 is associated with an arm 10 which, on breakage of the yarn, engages the driven member 4 of the head, and the relay action so introduced causes a link 15 to be lifted clear of a stop or catch member 31, the link 15 then causing or permitting a sliver clamping member 16 to operate under the action of a weight 30 to clamp the sliver and positively separate the sliver retaining and feeding rollers 2, 3. In a modification, not shown, the rollers 2, 3, which are smooth, are positively separated by spring action. In a still further modification, not shown, the arm 10 is covered with a layer of frictional material and effects the relay action; on breakage of the yarn, by contact with the roller 6.
Patent GB-852725-A (GB)
Title: Improvements relating to an apparatus for producing a beam of charged particles for working material
IPC: A61B3/16
Filed: 1959-06-15
Abstract: 852,725. Electron beam apparatus. ZEISSSTIFTUNG, C., [trading as ZEISS, C. [Firm of]]. June 15, 1959 [June 20, 1958], No. 20333/59. Class 39(1). Apparatus for working material with a high intensity beam of charged particles includes at least one electromagnetic cylindrical lens, corrected for spherical aberration, to focus a beam of large focal aperture in an impinging beam with a sharply defined periphery at which the beam intensity decreases sharply. The apparatus includes an elongated cathode 1, Fig. 1, a control grid 2, an anode 3 and an electromagnetic cylindrical lens 4 to produce an elongated spot on the work piece 7. A further electromagnetic cylindrical lens 6 is provided to produce a rotating field in order to rotate the beam and give a working beam of effectively circular cross-section, or a second electromagnetic cylindrical lens 5, with its axis perpendicular to that of the lens 4, may be used to produce a spot of clover leaf outline. Lenses 4 and 5 are 4-pole lenses, Fig. 2, with hyperbolic pole pieces 9, 18, 16 and 17 which are embedded in synthetic resin filling material 19, or lenses 4 and 5 may be combined into a single 8-pole lens. The lenses are corrected for spherical aberration by appropriate shaping of the pole-pieces or by using auxiliary ferromagnetic members.