baber/WOPTO huggingface dataset:
Patent GB-1149827-A (GB)
Title: Improvements in or relating to liquid level sensing devices and liquid level indicators
Inventor: JOHNSTON JAMES STEWART
IPC: G01F23/24
Filed: 1967-03-10
Abstract: 1,149,827. Liquid level indicators. ROSEMOUNT ENG. CO. Ltd. Feb.12, 1968 [March 10, 1967], No. 11343/67. Heading G1H. [Also in Division H1] A liquid level sensing device comprises a capsule 20 containing an electrically conducting liquid 21, a flexible support 26 of polymeric material for supporting the capsule 20 from a point electrical connections 28 extending into capsule 20, from the mount for the capsule, the connections being embedded in the polymeric material of the flexible support 26, the capsule 20 being arranged so that the electrical impedance between the connections thereto depends on the angle of tilt of the capsule and capsule 20 and support 26 being arranged so that the capsule is buoyant in a liquid to be sensed but is not buoyant in the air or other gas above the liquid. As shown the capsule has a pair of electrodes at each end and mercury 21 connects together one pair or the other pair depending on the angle of tilt. Capsule 20 is surrounded by expanded polystyrene 29 to give the required buoyancy. Support 26 comprises four copper strips 27, Fig. 2 (not shown) embedded between two layers of a halogenated polymer such as fluorinated ethylene polymer and the assembly of polystyrene 29 is heat-sealed with the polymer 30. A terminal block 33 is provided and a perforated guard tube 34. A number of capsules are mounted vertically beneath each other on a probe inserted from the top or bottom of a tank and the electrode inter -connected to provide an output in binary digital form depending on the liquid level, Fig. 3. The exhausts are shown in their lowest position. If a potential is applied to lead X, that potential will also appear on output leads A, B, C, D. As the liquid level rises, the lowest capsule floats and the output potential disappears from lead D. When the second capsule floats, the output potential is removed from lead C. When the next capsule floats the output potential will reappear on lead D. Thus the potential on leads A, B, C, D will be a reflected binary code in which the presence of the potential is zero and the absence of potential one. Instead of containing mercury the capsule may contain an electrolyte 53, Fig. 8 (not shown) the circuit being broken when an air bubble surrounds one of the electrodes. A changeover switch may be constructed by using a further electrode. A capsule may be used which instead of making and breaking a circuit changes the impedance between two electrodes. The lead wires are connected to thin film metal on metal oxide tracks 63, 64, Fig. 5 (not shown) fixed on to the inside of the capsule and these are bridged by a mercury globule so that the resistance depends on the position of a globule along the tracks as the capsule tilts.
Patent GB-166963-A (GB)
Title: Improvements in or relating to footwear
IPC: A43B7/06
Filed: 1920-04-23
Abstract: 166,963. Magaldi, E. April 23, 1920. Ventilating; soles; heels; socks.-A ventilated sole for boots is constructed of a flexible wooden core C and a leather layer A enveloped in a textile covering B, which has a circumferential air passage D reinforced by coil wire E. A metal spring H is secured at 1, 2, 3, and 4 between the wood and leather, and its free end is slipped under one of the staples M, N which secure the heel to the sole. A loose innersole or sock 0 consisting of wool in a fabric lining, is made slightly shorter than the sole. An outersole Q is provided and protectors of the kind described in Specification 166,964 or otherwise are secured by staples I, L.
Patent GB-581453-A (GB)
Title: Improvements in and relating to electric incandescent lamps
IPC: G01N33/10
Filed: 1944-06-14
Abstract: 581,453. Electric incandescent lamps. PHILIPS LAMPS, Ltd., MARTIN, S. L., and BEVINGTON, C. F. P. June 14, 1944, No. 11370. [Class 39 (ii)] In order to prevent corrosion of the tungsten filament of an electric incandescent lamp when calcium fluoride is incorporated in the getter mixture for the purpose of preventing blackening of the bulb, the calcium fluoride is supplemented by a small quantity of silica or similar refractory oxide such as beryllia, alumina or titania, which is readily attacked by hydrogen fluoride and forms comparatively innocuous compounds which do not corrode the filament. Either synthetic or mineral calcium fluoride may be used and mixed mechanically with not less than 0.2 per cent. by weight of the refractory oxide, the preferred quantity being about 3 per cent. Since synthetic calcium fluoride is liable to absorb water and liberate hydrogen fluoride when the salt is hydrolysed as a result of heating, it is preferably sintered, then treated with concentrated hydrochloric acid and washed with distilled water, after which it is milled with finely ground refractory oxide, e.g., quartz, and then treated with concentrated hydrochloric acid to which a small amount of nitric acid has been added. If mineral calcium fluoride of not less than 98 per cent. purity is employed, the preliminary purification and sintering may, be dispensed with.
Patent GB-1273901-A (GB)
Title: Improvements in or relating to rack and pinion assemblies
Inventor: GOLDSMITH RONALD STANLEY
IPC: F16C17/10
Filed: 1970-03-10
Abstract: 1,273,901. Toothed gearing. CAM GEARS Ltd. 19 April, 1971 [10 March, 1970], No. 11371/70. Heading F2Q. In a rack and pinion assembly for a steering gear, a pinion 1 is rotatably mounted by means of an angular contact ball bearing 2 and a ball 19 coaxial with the pinion 1 and engaging a frusto-conical recess 22 in the end of the pinion shaft and a frusto-conical recess 23 in a bearing element 21. The axial loading on the bearings may be varied by adjustment of a screwed cap 16. A rack bar 7 is mounted in a carrier member 8 of resilient material, such as rubber or plastics material, and a bearing plate 12 is carried in a recess 11 in the member 8. A screw 13 may be adjusted to urge the carrier member 8 towards the rack bar 7.
Patent GB-128431-A (GB)
Title: Improvements in Fixing and Supporting Devices for Tubes, Electric Wires and the like.
IPC: F16L3/10
Filed: 1918-07-12
Abstract: 128,431. Boothroyd, G. S., and Callender's Cable & Construction Co. July 12, 1918. Supporting tubes.-A fixing and supporting device for tubes, electric wires, &c. consists of a channel-section metal base-plate b fixable to a wall &c. and a metal saddle a having a gripping lining c. The saddle a springs or slides into or over the base-plate b, the edges of which are turned up and over inwardly or up as shown in Fig. 10. Tongues on the plate lock into cutaway portions in the saddle.
Patent GB-107109-A (GB)
Title: Improvements in and relating to Safety Apparatus for Lifts and Lift Wells.
Inventor: BOYD JOHN JERMYN
IPC: B66B13/24
Filed: 1916-08-15
Abstract: 107,109. Boyd, J. J., and Bishop, H. G. W. Aug. 15, 1916. Cage and platform lifts.-Safety apparatus for lifts and lift wells consists of openwork false floors suspended above and below the lift carriage by chains or cables. The false floors a collapse but are raised sufficiently above one another, by means of bucket shaped supports d into which the chain or cable c is received, to allow a person to crawl out.
Patent GB-124996-A (GB)
Title: Means for Producing a Substantially Continuous Cast Metal Wire.
Inventor: EYTON ADAM TUDOR
IPC: B22D11/00
Filed: 1918-07-13
Abstract: 124,996. Hopkinson, E. July 30, 1918. Vulcanizing tyres.-In vulcanizing tyre covers, with the aid of fluid pressure applied to the interior of the cover, closure of the space between the edges of the cover is provided by a ring 2 extending into the cover and having a facing 12 of plastic material, preferably rubber, on that part of its surface which engages with the edges of the cover. The ring may be channelled, as shown at 13, for holding the rubber strips provisionally in position. Within the ring a rim 3, having a broken wedge-shaped opening, is expanded by means of a key of corresponding wedge shape in order to compress the edges of the cover to the required size. The ring and rim are preferably loosely attached to each other, but may be made in one piece. The pipe 8 supplies fluid pressure to the interior of the cover.
Patent GB-927414-A (GB)
Title: A method of heat-treating a rod of semi-conductor material
IPC: C30B13/20
Filed: 1961-03-29
Abstract: <PICT:0927414/III/1> A rod is zone-melted using an induction heating pancake coil 2 and an associated coil 3 fixed relative to coil 2, the coils being fed with current of the same frequency but in phase opposition so as to reduce the length of the molten zone.  The coils may be in the same or separate circuits.  The counter-field produced by coil 3 may be 1/4-1/2 the strength of that produced by coil 2. The coils may be of silver-coated copper tubing and may be in the same cooling circuit.
Patent GB-125465-A (GB)
Title: Improvements in Recoil Apparatus for Ordnance.
IPC: F41A25/02
Filed: 1916-08-16
Abstract: 125,465. Beardmore & Co., W., and Bremberg, A. Aug. 16, 1916. Recoil apparatus.-Relates to hydraulic brakes of the kind comprising a cylinder A made with grooves D<1> at the front end, a piston A<1> with a hollow rod A<2>, a ram A<3> within the piston, a valve D for controlling the flow of liquid through the ram, and another valve to control the flow of fluid through the piston. According to the invention, this latter valve is in the form of a ring B<1> having a spherical outer surface., and a similarlv curved or a flat inner surface. It is arranged loosely without spring in a recess B<2> iii the piston to co-operate with a port B. The recess is longer than the ring; and the internal diameter of the ring is larger than the diameter of the ram A<3> where the ring surrounds it,
Patent GB-198527-A (GB)
Title: Improvements in road wheels for automobile vehicles
IPC: B60B1/00
Filed: 1922-04-25
Abstract: 198,527. Lanchester, F. W. April 25, 1922. Spokes, securing and adjusting. - A vehicle wheel is fitted with round spokes a adapted to be gripped between hub flanges and formed with wedge-shaped bases b glued together in pairs, and in which the grain runs tangentially in a plane normal to the wheel axis. Between the pairs of bases b are driven radial wedges e which have outer cheeks, and in which the grain is longitudinal and an inner layer with tangential grain. The spokes have spherical outer ends c which rest in cups d fitted to the rim. In modification the outer spoke ends may fit a groove rolled in the rim. The wedges e may be dispensed with or may be fitted between pairs of flat spokes.
Patent GB-256321-A (GB)
Title: Improvements in or relating to a smoker's companion
IPC: A24F19/10
Filed: 1925-05-05
Abstract: 256,321. Smith & Sons (Motor Accessories), Ltd., S., and Smith, A. G. May 5,1925. Ash-trays.-A smokers' companion adapted to be mounted in the interior of a motor-car comprises a body portion 5 combined with an ashtray 10 and an electric cigar lighter 18. The ash-tray 10 is preferably detachably mounted in a pocket in the body portion 5 and comprises a box having a hinged bottom secured by a friction catch. The cover of the box is curved to form a rest for cigars or cigarettes and is provided with apertures 11. A lateral extension 14 of the cover is apertured at 15 to form, in cooperation with an aperture in the base of the pocket, a tobacco-pipe support. A member com. prising a switch base for the lighter 18 is carried in a downwardly-opening pocket in the front of the body portion 5 and is secured therein by spring-ball fastenings. The lighter 18 comprises a resistance filament and is mounted on a circular member 17 having a circular flange 19. The sides of the switch-base are flanged to form upwardly opening grooves which engage the flange 19 and retain the member 17 in position. An insulated contact stud in the centre of the switch. base registers with a similar stud on the meanber 17 connected with the filament 18, the circuit being completed through the metal of the switch base and through a switch 24. In use, the switch 24 is first closed to heat the filament 18, the member 17 being then removed from the switch base to light the cigar. The upper wall 26 of the switch-base pocket is cut away at 29 to provide clearance for the contact stud on the member 17.
Patent GB-587459-A (GB)
Title: Improvements in or relating to electric measuring systems
IPC: G01R1/28
Filed: 1944-06-20
Abstract: 587,459. Current and voltage measurements. COMPANIA PARA LA FABRICACION DE CONTADORES Y MATERIAL INDUSTRIAL SOC. ANON., and VITEAU, P. June 20, 1944, No. 11708. [Class 37] In a system for measuring a small voltage from a circuit of high internal resistance, the voltage is applied to the coil of a galvanometer movement without a restoring couple in opposition to the voltage drop in a resistance 12 due to rectified current from a local oscillator 6. The value of the current depends on the position of the movable vane 3 of a condenser 3, 4, 5 connected mechanically to the moving coil. Equilibrium is reached when the voltage to be measured equals the voltage across 12 and the value is read off on a current-measuring instrument 10. To compensate for the reaction on the condenser plate, the latter may be influenced by two additional fixed plates connected to an oscillator similar to the oscillator 6, Fig. 2 (not shown), or may be connected mechanically to the movable plate of a second condenser, the fixed plates of which are similarly connected. Several other arrangements with the same object are mentioned.
Patent GB-109611-A (GB)
Title: Improved Method and Apparatus for Preventing Pulsation in Centrifugal Compressors.
IPC: F04D27/02
Filed: 1917-08-16
Abstract: 109,611. Akt.-Ges. Brown, Boveri, et Cie. Aug. 28, 1916, [Convention date]. Regulating.-Pulsation is obviated by producing a throttling effect in the suction or delivery pipe of the compressor in such a manner that as the volume of delivery diminishes the pressure decreases, this pressure decrement being approximately nil at the critical volume of delivery, increasing to a maximum with diminishing volume of delivery, and again decreasing with a further diminishing volume of delivery, disappearing wholly or approximately when the volume of delivery is nil. Various forms of throttle-control apparatus comprising springs or pistons are described. Fig. 2 shows a spring-loaded throttling device which is inoperative at the positions a and b, and secures a maximum throttling between those positions. In a modification, the spring device is replaced by a piston actuated by compressed air or oil, the supply of which is throttled by a control valve to secure the desired effect. Fig. 6 shows a throttling member actuated according to the various volumes of delivery by means of a piston and cam device. The cam and like devices may be made adjustable. The Specification as open to inspection under Sect. 91 (3) (a) includes also a construction of throttle-control apparatus as shown in Fig. 7 (cancelled) for obtaining the same result. This modification does not appear in the Specification as accepted.
Patent GB-799775-A (GB)
Title: Improvements in or relating to the casting of aluminium or aluminium alloys on to ferrous metals
Inventor: HOWLETT JOHN WILLIAM
IPC: B32B15/01
Filed: 1954-04-23
Abstract: 799,775. Casting composite articles. WELLWORTHY, Ltd. July 25, 1955 [April 23, 1954], No. 11823/54. Class 83 (1). In a process of casting Al or Al alloy on to a ferrous-metal article by contacting the surface of the article with molten Al or Al alloy to produce a ferro-aluminium interface bond-layer thereon and casting A1 or an Al alloy on to said treated surface, the ferrous article is located in a mould and the molten A1 or A1 alloy flowed therethrough for such time as is necessary to form the interface layer, and the flow is then stopped and the mould cavity allowed to fill. The ferrous article may be coated before positioning it in the mould, with a metallic barrierlayer which modifies the normal behaviour of the aluminizing treatment, e.g. with zinc, tin, chromium or nickel. The article may comprise stainless-steel tubes assembled to form a heatexchanger unit. Specifications 599,684 and 799,776 are referred to.
Patent GB-288833-A (GB)
Title: Improvements in or relating to devices for use in comparing colours
IPC: G01J3/52
Filed: 1927-05-03
Abstract: 288,833. Alder, H. H. May 3, 1927. Colour scales. - A colour harmony device comprises a mask 1 carrying a coloured picture 3 showing a group of colours constituting a standard of comparison and having an opening 5 near to the picture 3 through which may be observed the different coloured areas 8 of a sheet 8, each area harmonizing with the coloured picture 3. The mask 1 may be in the form of an envelope to hold a series of colour charts.
Patent GB-757131-A (GB)
Title: Improvements in or relating to a drive for the printing cylinders of rotary printingmachines with registering means
IPC: B41F13/14
Filed: 1954-04-23
Abstract: 757,131. Printing machines. KLEINEWEFERS, P., [trading as KLEINEWEFERS SOHNE, J.]. April 23, 1954 [April 24, 1953], No. 11855/54. Class 100 (2). Rotary machines.-In drive means for the printing cylinders of rotary printing machines having mechanical means for holding in registry the driven printing cylinders, the shaft of each cylinder 1, or a drive wheel 2 arranged fast on the shaft, is permanently connected, on the one hand through gearing 3, 4 to a separate driving motor 5 and on the other hand through further gearing 6, 8 to the central registering wheel 7 ; 4 is a reduction gear. The motors are D.C. and provided with field regulators to compensate for leading or lagging of the cylinders within the limits of tooth clearance, and are regulated from a central switchboard which also contains instruments for determining the current consumption and switches for separately switching-off the individual motors.
Patent GB-696608-A (GB)
Title: Hydrous gels for therapeutic purposes
IPC: A61F11/00
Filed: 1951-05-22
Abstract: A hydrous therapeutic gel, for use as a dressing on burns, infected areas, &c., contains water 100 parts, gel-forming material from 5 to 30 parts, and acetic acid not more than 4 parts, the parts being by weight.  The gel-forming material may be carboxyl alkyl (methyl) cellulose, pectins, polyvinyl alcohol, gelatin, partially oxidized cellulose, agar, fibrin, albumin or starch.  The gel may also contain lanolin, mineral oil, an sthetics, colouring matter or dyes, and a preservative such as sodium benzoate, phenol or hydroxyquinoline.
Patent GB-266172-A (GB)
Title: Improved combination of a reciprocating engine and turbine
IPC: F01K7/02
Filed: 1926-05-07
Abstract: 266,172. Wach, H. March 19, 1926, [Convention date]. Motor power plant.-A plant, comprising a turbine fed with the exhaust steam of a reciprocating engine and driving the engine shaft through gearing and a fluid coupling is provided with a fluid-pressure control system. A hand and governor-controlled distributing valve e of the system controls the supply of oil to a fluid coupling c and the piston of an exhaust steam valve d which; supplies the turbine b or opens to the condenser. When the governor s falls a, valve r admits pressure oil to a piston u on the distributing valve e which thereupon releases the oil in the coupling c and opens the steam valve d to the condenser. In normal operation the valve r, which is only operated by the governor s in the forward direction, releases the pressure on the piston u of the distributing valve e which can then be moved by hand to bring the fluid coupling c into action and to open the steam valve d to the turbine as soon as a certain speed is reached. Specifications 264,055, 264,359 and 266,261 are referred to.
Patent GB-1263749-A (GB)
Title: Improvements in and relating to acoustic lenses
IPC: A61B8/08
Filed: 1969-03-06
Abstract: 1,263,749. Acoustic lenses. HOLOTRON CORP. 6 March, 1969 [20 May, 1968], No. 12038/69. Heading H4X. An acoustic lens comprises two liquids having differing acoustic indices of refraction relative to air and a stretched and curved synthetic polymeric film separating the liquids. The film is preferably stretched close to its elastic limit. Suitable films are of polyesters, polyimides, fluorocarbon polymers and copolymers, polyvinyl fluoride, polyvinylidene chloride, polyolefins or cellulose acetate. The film may be oriented polyethylene terephthalate. Prestretching of polyethylene terephthalate may be obtained by heat shrinking. Alternatively the film may be held in a small window frame and stretched by clamping a cylindrical member to the frame (Figs. 3, 3A, 3B, 4, 4A, not shown). The lens may comprise two films 350, 352 (Fig. 6A) pre-stretched and then given a curved shape by pumping into a chamber 362 liquid such as carbon tetrachloride, chloroform, ethyl bromide, methyl bromide or methyl iodide, or preferably trichloro - trifluoro - ethane. The surrounding medium may be water and there may be provided two further chambers 354, 358 also filled with water. In such arrangement the membranes 350, 352 are less likely to creep. Further, if the pressures in chambers 354 and 358 are made unequal the films take on different radii of curvature, permitting correction for spherical aberration. Alternatively the construction provides a multi-element lens for aberration correction. The liquids placed in the three chambers may have different or similar refractory properties. One or more of the films may have different directions of curvature from those shown. In an alternative arrangement (not shown) the lens has only one face of prestretched elastic film, the enclosed liquid being contained by a solid element or by a transducer element. In another arrangement films 189, 190 (Fig. 6), together with a ring 192 and gaskets 193, 194, define a cavity 191. The films 189, 190 are held in ring assemblies 195, 196 attached by threaded members 197. Liquid is introduced into the cavity 191, whereupon wing- nuts 198, 199 are turned to stretch the films. Ring clamps 156, 157 have gaskets 158, 159 to improve the seal. As described, the lenses are spherical but the techniques are applicable to lenses of cylindrical or other shape.
Patent GB-1421764-A (GB)
Title: Off-shore platforms
IPC: E02B17/02
Filed: 1972-03-15
Abstract: 1421764 Offshore structures TRADE & INDUSTRY SECRETARY OF STATE FOR 8 May 1973 [15 March 1972] 12039/72 Heading EIH An offshore structure comprises two or more spaced elongate ballastable concrete pontoons 1, 2 supporting a platform via a space frame structure, the structure being floated into position and sunk by flooding the pontoons, which are preferably formed in a unitary manner or as a plurality of modules and comprise a plurality of floodable compartments. After construction of the pontoons they are towed to a shallow site, and the space frame may then be erected thereon, or a complete space frame and platform may be located on the pontoons which are temporarily flooded. On site the structure may be stabilised during sinking by attaching to it a pair of cylindrical floats (Fig. 2 not shown). An anti-scour fence 42 may be located at each end of the pontoons. The structure may form a lightship or an oil or gas drilling or production platform.