baber/WOPTO huggingface dataset:
Patent GB-1162288-A (GB)
Title: Improvements in or relating to Snap Action Electric Switches
Inventor: KREIGER ALVIN WILLIAM
IPC: H01H13/40
Filed: 1967-12-11
Abstract: 1,162,288. Snap-action switches. CUTLERHAMMER Inc. 11 Dec., 1967 [9 Dec., 1966], No. 56209/67. Heading H1N. In a snap-action electric switch a trifurcated contact blade 18d, Fig. 2, has a pair of compression legs 18c, Fig. 2, extending from a region near the contact 18a to a pivot point p and a compression leg 18e bent over at its other end and extending to a second pivot point 18f whereby the operating plunger 6 is yieldingly restrained throughout its range of movement. The pivot points are arranged on a common bent-up terminal 16 which is slotted to receive a locating tongue 18f of the contact blade and has tongues 16e for location in recesses of the base 2 and cover 4 (not shown). A cover attachment rivet 8 may carry a pivoted actuator.
Patent GB-1426087-A (GB)
Title: Polyurethane lattices
IPC: C08L51/08
Filed: 1973-12-05
Abstract: 1426087 Polyurethane / addition polymer latices AMERICAN CYANAMID CO 5 Dec 1973 [9 April 1973] 56337/73 Headings C3P and C3R A polymer latex comprises a polyurethane latex and a polymer of at least one ethylenically unsaturated monomer which has been obtained by the free radical polymerization of said monomer(s) in the presence of the polyurethane latex. The unsaturated monomer may be polymerized in the presence of a latex of an isocyanate-terminated prepolymer which completely cures during the addition polymerization. The polyurethane may be derived from a polymeric diol (which may be a polyester, polyether, a polypropylene ether glycol, or a polyformal), and an organic diisocyanate. The isocyanate terminated prepolymer may be prepared from a polymeric diol, a small amount of a polymeric triol or tetrol and an organic diisocyanate. The polymerization of styrene, and methyl methacrylate, with and without acrylonitrile, is exemplified. In Examples 1 and 2 a prepolymer and fully polymerized polyurethane are prepared from polypropylene glycol, 2,2<SP>1</SP>- bis - (hydroxymethyl) propionic acid and 2,4<SP>1</SP>- tolylene diisocyanate.
Patent GB-1206937-A (GB)
Title: Improvements relating to gem stones
Inventor: LEIBOWITZ ALEC
IPC: A44C17/00
Filed: 1966-12-20
Abstract: 1,206,937. Polishing gems. SPECTRUM DIAMONDS (PTY) Ltd. 28 Nov., 1967 [20 Dec., 19661, No. 56979/66. Heading B3D.  A method of faceting a bruted gem stone held in a pot provided with a surrounding guide ring comprises forming a plurality of facets by polishing on a polishing surface and terminating the polishing of each facet when the ring contacts the polishing surface. A bruted stone is inserted into a cavity at the front end of a metal press pot a, Fig. 5, the pot wall around the cavity being axially slit to provide radially sprung fingers b, c, d which grip the stone around its girdle section. The pot is pre-inserted in the front end of a holder e, the front end having a pot holding cavity f surrounded by an inner metal sleeve g, an insulating sleeve h and an outer metal sleeve j. A tight fitting axially slidable metal guide ring k is provided.  A first half facet 1a is then polished; when portion m of the facet and portion n of the pot have been polished away, lip I of the ring k contacts the polishing wheel and polishing is then terminated. The process is repeated, until facets 1a to 16a on the stone and facets 1b to 16b on the pot have been formed. Polishing then commences e.g. along line B, Fig. 4, to produce a first main facet 17a, polishing being terminated upon contact with the polishing wheel of the peak A2 formed on the pot during polishing of the half facets. The process is repeated until all main facets 17a to 24a have been formed. The machine may have an electric control system including means for automatically lifting the chuck off the wheel when the outer ring (when polishing half facets) or pot (when polishing main facets) contacts the wheel, and means for indexing the chuck about its axis, through 22¢ degrees for half facets and 45 degrees for main facets, after which the chuck is lowered towards the wheel. Alternatively, the circuit may only indicate when the outer ring or pot contacts the wheel. Alternatively, faceting is effected by visual inspection.
Patent GB-1204388-A (GB)
Title: Temperature control apparatus
IPC: F23N5/14
Filed: 1967-12-21
Abstract: 1,204,388. Automatic temperature control systems. TEXAS INSTRUMENTS Inc. Dec.21, 1967 [July 14, 1967], No.58182/67. Heading G3R. A N and C thermistor TH1 senses the outlet fluid temperature e.g. air of a heat exchanger in a gas fired system and controls discontinuously the energization of a gas valve solenoid W1 through a thyristor Q1. Another N and C thermistor TH2 responsive to space temperature angularly controls a thyristor Q1 supplying a biasing heater H1 which influences the outlet thermistor TH1 temperature to a settable extent. Heaters H1, H2 may comprise a mass of semi-conductor material. A capacitor C1 provides a regenerative effect on the thyristor triggering action. The fluid may be alternatively water, the temperature of which may be measured and the arrangement may be applied to a cooling system. Other types of fuel, or electric heating may be employed.
Patent GB-1303760-A (GB)
IPC: H03D1/06
Filed: 1971-12-15
Abstract: 1303760 Encoders WESTERN ELECTRIC CO Ltd 15 Dee 1971 [21 Dec 1970] 58211/71 Heading G4H [Also in Division H3] An amplifier substantially as shown in Fig. 5, for producing an output of one polarity irrespective of the polarity of the input signals, e.g. for use in a coder stage of a P.C.M. system, includes a path 40-31 for correcting offset. Basically, the circuit comprises a forward path 10 in parallel with a unidirectional circuit which passes input signals of one polarity only, the sum of the currents through the paths producing the monopolar output. A feedback path 27 is provided to reduce the amplifier gain and thus reduce the higher frequency distortion at the zero crossing of the signal but this produces a current offset for signals of one polarity (Fig. 4C, not shown). This is removed by closing switch 40 when the signal is of this polarity. The switch may be a feedback amplifier of unity gain responsive only to the one polarity (Fig. 6, not shown).
Patent GB-1342420-A (GB)
Title: Method of providing a transverse bond between precast floor slabs
IPC: E04B5/02
Filed: 1971-12-21
Abstract: 1342420 Bonding precast concrete floor slabs STRANGBETONG AB 21 Dec 1971 [21 Dec 1970] 59310/71 Heading E1W Concrete floor slabs 3 with through bores 4 are mounted side by side spanning between walls or columns &c and are joined by transverse reinforcement 7 positioned in grooves 5 formed near the ends of the slabs which grooves communicate via apertures 6 with the bores 4 in which are positioned plugs. At least one of the plugs in each slab being formed with a cavity extending under the apertures 6. Concrete or plastics based cement is then poured over the reinforcement and into the cavities. The plugs may be lightweight or aerated concrete or gypsum with preformed cavities or they may be of soft formable material such as rock wool, asbestos or foamed plastics in which the cavities are formed manually in situ.
Patent GB-1207257-A (GB)
Title: Improvements in centrifuges
Inventor: KERBY COLIN
IPC: B04B5/04
Filed: 1968-12-13
Abstract: 1,207,257. Centrifugal separators. C. KERBY. 13 Dec., 1968 [14 Dec., 1967], No. 59920/68. Heading B2P. A centrifuge for removing suspended solids from a biological fluid, Figs. 1, 3 and 4, comprises a balanced head, e.g. a shaft 10, mounted for rotation in bearings 11, 12 and having at least one radially extending arm 16 with a cell 21 mounted at its extremity to receive solids-laden fluid from a source, e.g. an animal, through a fluid-tight bearing 18, 19 coaxial with the bearing 12, means for the discharge of solids-free fluid from the cell through a second fluid-tight bearing 27, 28 coaxial with the bearing 11, and means for discharging separated solids from the cell 21. The shaft 10 is driven by a belt 14 through a variable speed motor 15. The source of solids-laden fluid is connected through tubing to a stainless steel tube 18 over the end of which is rotatably fitted a P.T.F.E. tube 19 which passes through a bore 20 in the shaft 10 and through the arm 16 into the interior of the cell 21 which is provided at, its apex with a solids-discharge aperture 25 normally sealed by a spring-biased valve member 26 which is intermittently opened by a solenoid operated cam 30. The solids-free fluid passes from the cell 21 through a P.T.F.E. tube 27 rotatably fitted over a stainless steel tube 28 which may be connected back to the source. The tubes 18, 28 may be mounted in heat sinks 29 to reduce the heat produced by friction between the P.T.F.E. and stainless steel tubes; the sinks 29 may be rotated by separate drive means to further reduce friction. The shaft 10 may carry a further arm 17 which, as shown in Fig. 6, may be provided with a carrier 34 for one or more cells 3 which may contain specimens on which the effect of the solids-free liquid may be studied. Each of the cells 31 communicates with the cell 21 in arm 16 via tubes 32 and discharges fluid via tubes 33 to output tube 27. An alternative cell 36 by means of which the separated solids may be connected is shown in Fig. 9. The cell has a floor 37 and a flexible membrane 38 spaced therefrom. In use the cell is fitted to arm 16 and two-way cocks are fitted to the inlet and outlet side of the centrifuge at 18 and 20. Collection of separated solids takes place on the membrane 38 which distends into cavity 29 under centrifugal force. For removing the collected solids the centrifuge is stopped, the two-way cooks are operated in the other direction and a pressurized stream of fluid is introduced through the outlet side of the centrifuge, mixes with the solids which have been disturbed by the membrane result ing its original flat shape and jet them out through the inlet side into a receptacle.
Patent GB-1377508-A (GB)
Title: Agitating dredging device
IPC: E02F3/18
Filed: 1971-12-29
Abstract: 1377508 Dredging devices BALLAST-NEDAM GROEP NV 29 Dec 1971 [25 Feb 1971] 60485/71 Heading E1F Ground lying beneath flowing water is dredged by a rolling rotor as it is towed over the ground against the water flow to direct and accelerate some of the water flow adjacent the ground at the ground to cause scouring away of the ground. The rotor together with an associated towing yoke may be of such a construction that controlled variation of the buoyancy thereof may occur.
Patent GB-1218859-A (GB)
Title: Improvements in or relating to refractory compositions
IPC: C04B41/50
Filed: 1968-12-11
Abstract: 1,218,859. Refractory compositions. KAISER ALUMINUM & CHEMICAL CORP. 11 Dec., 1968 [18 Dec., 1967], No. 63078/69. Divided out of 1,218,858. Heading C1J. A gunnable refractory composition comprises sized refractory aggregate, a plasticizer, e.g. 1-7% of plaster of Paris, and a bond of 0À5-5À0% NaH 2 Po 4  with 0À5-5À0% potassium tripolyphosphate. Periclase is the preferred aggregate and can be mixed with chromite, alumina or dolomite. Optionals are Ca(OH) 2 , carbon, e.g. pitch or graphite, and volatilized silica.
Patent GB-643433-A (GB)
IPC: E05B15/02
Abstract: 643,433. Escutcheon plates. SHRAGER BROS., Ltd., and SHRAGER, B. Sept. 17, 1948, No. 24446. [Class 44] A key - hole escutcheon plate 1 is secured to the door by means of pins 3 cast or moulded as a single element with the plate.
Patent GB-722789-A (GB)
Abstract: 722,789. Electrolytic condensers. WESTERN ELECTRIC CO., Inc. June 16, 1953 [June 20, 1952], No. 16554/53. Class 37. The electrical properties of electrolytic condensers are stabilized by the addition of a small amount of nitro-organic compound to the electrolyte. In the case of dry electrolytic condensers of the rolled foil type comprising oxide film-coated foils of tantalum, aluminium, magnesium or beryllium interleaved with kraft paper and formed into a roll 1 (Fig. 1), which is enclosed in a can 8 with sealed ends, the roll 1 is impregnated with an electrolyte to which is added the nitro-organic compound, and the free space in the can is also filled with the stabilized electrolyte. In the case of wet electrolytic condensers comprising an anode consisting of a tantalum pin 15 (Fig. 3), carrying a body 14 of tantalum powder, and a cathode 17 forming the can, the electrolyte 18 contains the nitro-organic compound. Details of suitable mixtures for use as stabilized electrolytes are given, the most satisfactory nitro-organic compounds being nitro-aromatic and nitro-aliphatic compounds.
Patent GB-777909-A (GB)
Abstract: 777,909. Clocks. TAVANNES WATCH CO., SOC. ANON. Nov. 16, 1955 [Nov. 23, 1954], No. 32749/55. Class 139. In an alarm clock the alarm spring barrel 1, Figs. 1 and 2, may be locked by depression of a pusher 2 which moves a rocker 3 into locking engagement with a gear 7 having a pinion which meshes with the barrel 1. The rocker 3 may be returned to its alarm release position by manual operation of a knob 8 attached thereto.
Patent GB-2002990-A (GB)
Title: Dual standard video record player
IPC: H04N9/85
Filed: 1978-08-24
Abstract: Video record player e.g. video disc player, capable of playing back composite colour signals recorded in either of two different signal formats i.e. including chrominance signals with different buried colour subcarrier frequencies, includes a single VCO (24) which up- converts the chrominance signals, the frequency of this oscillator being controlled by comparing (26) the separated up-converted bursts with the appropriate one of two reference oscillations (30, 32) manually selected by switch (52) according to the signal format played back. The frequency difference between the two reference oscillations equals the frequency difference between the two buried subcarrier frequencies and thus also the frequency difference between the two up- converted subcarrier frequencies. In an alternative embodiment the VCO output frequency is selected to be one of two values in dependence upon the played back buried subcarrier frequency, in which case the subcarrier signals are up-converted to the same subcarrier frequency. The recorded composite colour signals comprise modified NTSC type signals, the chrominance signals being separated therefrom by comb filtering (40, 60, 61) either after (as shown) or before the up-conversion. Switch (51) is gauged to switch (52). The separated chrominance signals are demodulated (96, 98) using the selected reference oscillations, remodulated on a standard subcarrier (120) and combined (90) with the luminance signal. <IMAGE>
Patent GB-2006729-A (GB)
Title: Fast flow rate coarse synthetic hydrous calcium silicate.
IPC: C01B33/24
Filed: 1978-09-13
Abstract: A synthetic hydrous calcium silicate composition is formed by the hydrothermal reaction of calcium oxide and a siliceous material, has particle sizes of a minimum of 8%  &dagger& 325 US mesh, a permeability in the range of about 0.35- 0.70 darcies and an oil soluble calcium content (as defined in the specification) of not greater than 60 ppm. The silicate may be mixed with diatomite and magnesium silicate hydrate. The synthetic hydrous calcium silicates of the present invention are significantly coarser in particle size, have significantly greater flow rates and less oil soluble calcium contents than the synthetic hydrous calcium silicates of the prior art. The composition is useful in a variety of restaurant, industrial and rendering oil filtration applications for reduction of free fatty acid content of oils such as cooking oils.
Patent GB-2004769-A (GB)
Title: Process for coating a surface with plastics material
IPC: B65B47/02
Filed: 1978-09-19
Abstract: A process for coating a surface with a protective layer of dielectric plastics material, in which the plastics material 12 is heated on a carrier 14 to a temperature at which it is in a liquid state and the surface 17 to be coated is presented above the molten coating material and heated at least to the same temperature, an electrostatic field is created between the molten plastics material and the surface 17 to be coated and this field attracts plastics particles in the state of fine liquid particles onto the hot surface 17 and upon contact with the hot surface 17 the particles form a continuous protective film which is then rapidly cooled, the process making possible the formation of particularly thin and uniform continuous protective coatings, particularly for coating metal packaging means. <IMAGE>
Patent GB-2007935-A (GB)
Title: Telecine machine
IPC: H04N5/44
Filed: 1978-10-20
Abstract: A telecine machine has a solid state sensor 22 before which film is driven at a constant rate. To overcome differences between the film frame and television field utilization ratios, i.e. the proportion of the vertical scanning extent which is occupied by active information, and/or differences between the film frame rate and television field rate, an output signal is obtained in the form of a first sequential television signal of non-standard type, which is electronically converted to a second interlaced-scan standard signal. For example to obtain a 625/50 signal from 35 mm film, a 723/50 sequential signal is first generated, and from 8 mm film a 625/33<1>/3 sequential signal is first generated. <IMAGE>
Patent GB-2018074-A (GB)
Title: Low distortion wideband amplifier
IPC: H04B3/36
Filed: 1979-03-19
Abstract: A wide-band transistorized amplifier includes between two line couplers (8, 9) a cascade of amplification (10, 11, 12) stages and a negative feed-back network (18) connecting the output from the last stage to the input to the first. A feed forward correction stage (19-23) is arranged in parallel across one of the stages (12) of the cascade. The stage (12) across which the correction stage is arranged, introduces a phase reversal, and includes a transistor (20) the base of which is connected through an inductive phase-shift impedance (19) to the input to the stage (12) of the cascade and also through a resistor (23) to the output from the stage (12). The collector is connected through a resistor (21) in parallel with a capacitor (22) to the output from the stage (12) so that the required signal is substantially cancelled at the input to the transistor (20) of the correction stage, and the noise generated by the stage (12) of the cascade, which is amplified by the stage (12) of the cascade, which is amplified by the correction stage, is substantially reduced at a load (5) connected to the amplifier output. <IMAGE>
Patent GB-2019980-A (GB)
Title: Valve or cock operable through gearing
IPC: F16K31/60
Filed: 1979-03-19
Abstract: A valve body 1 carries a housing 8 which is closed by a hand knob 10 rotatably mounted thereon, the knob 10 and housing 8 having ring gears 19 and 22 respectively between which are planet gears 24 mounted on a planet carrier 23 which is fixed to the operating spindle 6 of the valve. <IMAGE>
Patent GB-2035917-A (GB)
Title: Tractor
IPC: B62D49/06
Filed: 1978-08-30
Abstract: A tractor having a subframe (10) to which a telescoping arm (13) is vertically and horizontally pivoted, and the driver's cab (14) is connectable to the arm (13) to permit being placed in any desired position. The telescoping arm (13) is extensible from a length smaller than that of the subframe (10) to a length considerably in excess of that of the subframe (10), whereby the cab can be mounted on the subframe as well as in different locations about and above the subframe (10), say behind an implement (22) towed by the tractor. The drive unit (12) of the tractor is readily detachably connected to the subframe (10).
Patent GB-2031579-A (GB)
Title: Improvements in or relating to gaseous fuel burners
IPC: F23D14/04
Filed: 1979-07-25
Abstract: A gaseous fuel burner constructed from sheet metal has an air inlet 4, a gas inlet 3, a chamber 5, 17, for mixing the gas and air and a distribution chamber 1, 18 for distributing the mixed fuel via supply chambers 6, 8, to each of a series of aligned fuel apertures A1-A4. Each supply chamber is formed to provide a gas supply passage and a fuel aperture, the contour of the passage and of the aperture being such that the velocity profile of fuel issuing from the aperture varies from a low value at one end of the aperture to a high value between the ends of the aperture. <IMAGE>
Patent GB-2027496-A (GB)
Title: Turbine blade
IPC: F01D5/28
Filed: 1979-08-06
Abstract: The blade has a metallic core 2 carrying the blade root 2a and a ceramic aerofoil 1 enveloping the core with a resilient substance 4, e.g. ceramic foam or felt, interposed between the core and aerofoil. The core 2 has a head 3 under which one or more shoulders 1e engage to secure the aerofoil 1. The blade may consist of several axial sections 1a, b, c. The core and aerofoil are thus able to expand and contract independently of one another. Cooling air passages 6a may be provided. <IMAGE>
Patent GB-2055532-A (GB)
Title: Adjustable harrow
IPC: A01B63/22
Filed: 1979-08-07
Abstract: A harrow comprises external sections which can be folded away for transportation and a central section, each section having a frame bearing transverse rotatable harrow tine axes 13, 15 for tines 14; the centre section being supported on a wheel bogies 8a pivotal about articulation 31 via arm 38 and ram 36, the external section being supported on skids 16b pivotal on arms 17b, 18b via bar 21b, for adjusting the height of the frames above the ground and connecting elements 17b, 19b, 20b, 21b, 33 and 30 for adjusting the angular position of the tine axes wherein the axes for the harrow tines on the sections are adjusted to the same height above the ground and/or the same angular position. <IMAGE>
Patent GB-2026583-A (GB)
Title: Mounting fire-escape devices on buildings
IPC: E06C9/06
Filed: 1979-08-16
Abstract: A frame for mounting a fire- escape device on a building includes a number of links e.g. 4,8,12 or 52,54,56 which can be pivoted between a retracted position inside the building and an extended position in which a link 12,56 extends through a window. The inner link may be fixedly secured to the building and the retracted frame may be concealed by an article of furniture. <IMAGE>
Patent GB-2029388-A (GB)
Title: Battery Cathodes and Methods of Making Them
IPC: H01M4/02
Filed: 1979-08-20
Abstract: A battery cathode comprises a substrate having a coating thereon comprising MoO2. The coating is formed by heating a suspension of molybdenum sulphide to convert it at least partially to MoO2 before or after application to the substrate. Oxidation may be to MoO3 followed by reduction. A cell comprises a lithium anode a non aqueous electrolyte and a cathode comprising MoO2.
Patent GB-2029878-A (GB)
Title: Folding door comprised of wooden slats and hinges
IPC: E06B/
Filed: 1979-08-20
Abstract: A folding door, of the kind composed by an array of wooden slats connected by intermediate hinge elements; the intermediate hinge elements are of wood, preferably of the same color and grain of the wood the slats are made of, and a metallic hinge element is hidden within the strips of wood interposed between any two wooden slats so that the external appearance is that of an all-wooden assembly both when the door is outstretched and when it is folded.
Patent GB-2031558-A (GB)
Title: Apparatus for controlling the flow of intravenous fluid to a patient
IPC: A61M5/175
Filed: 1979-08-31
Abstract: Flow from an input line 12 to an output line 16 is controlled by adjustment of a diaphragm 32 relative to a ring 30 which surrounds the end of an outlet passage 26 but has a notch for low flow rates. Manual setting is possible by screwing in a knob 40 which presses a plunger 36 against the diaphragm 32. Control may also be effected by a stepping motor coupled to the knob 40 and responsive to comparison of a desired flow rate with the rate measured by a drop sensor 62. <IMAGE>