baber/WOPTO huggingface dataset:
Patent GB-1236823-A (GB)
Title: A method of manufacturing a self-lubricating component of plastic material, and a self-lubricating component obtained thereby
IPC: F16C33/20
Filed: 1968-06-28
Abstract: 1,236,823. Sintered polyamides. EBAUCHES S.A. 28 June, 1968 [4 July, 1967 (2)], No. 30839/68. Heading B5A. [Also in Division C3] Self-lubricating components, e.g. for precision engineering or horology, are made by sintering a powdered self-lubricating thermoplastic polyamide to which is added an isocyanate reactant in such a manner that the coalescence of the polyamide powder is produced before reaction with the isocyanate is completed and continuing the reaction during cooling from the sintering temperature. A mono-, di- or tri-isocyanate may be used and it may be blocked with a compound which is released in the vicinity of the sintering temperature. Specified blocking agents are phenols, diphenylamine, dicyclohexylamine, 1 - phenyl - 3 - methyl - pyrazolone (5), quinoline and oxyquinoline. A reinforcing agent, e.g. a fibrous thermoplastic material, may be included with the powder. In Examples (a) nylon 66 powder (<80 Á) and naphthylisocyanate blocked with dicyclohexylamine is sintered in a steel mould at 235‹ to 245‹ C. and 4 to 5 (metric) tons/cm.<SP>2</SP>; (b) nylon 6 and 2,4-toluene diisocyanate blocked with #-naphthol is coldpressed in a mould at 2À5 tons/cm.<SP>2</SP>, sintered at 205‹ to 210‹ C., allowed to cool while the pressure is slowly increased to 5 tons/cm.<SP>2</SP>, removed from the mould and subjected to 110‹ C. for several hours; (c) nylon 11 is allowed to partially react with toluene diisocyanate in solution at 35‹ to 40‹ C., the unreacted isocyanate group is blocked with phenol and the resulting powder after removal of solvent sintered at 195‹ to 210‹ C.; and (d) powdered nylon 12 and octamethylene-1,8-diisocyanate are sintered at 180‹ to 190‹ C. and 4 to 5 tons/cm.<SP>2</SP> in a mould and after removal from the mould heated at 170‹ C. for several hours.
Patent GB-956023-A (GB)
Title: Improvements in or relating to detonators
Inventor: GURTON OWEN ALLEN
IPC: F42B3/16
Filed: 1961-10-24
Abstract: 956,023. Electric detonators. IMPERIAL CHEMICAL INDUSTRIES Ltd. Oct. 24, 1962 [Oct. 24, 1961], No. 38053/61. Heading F3A. A detonator comprises a highly compressed column 10 of secondary initiating explosive housed in a thickwalled tube 2 and spaced from a less compressed charge 6 of the secondary initiating explosive as in Specification 902, 643. and is provided with sealing means which allows ignition of the column 10 and after ignition closes the tube 2 to prevent escape of the gases generated. The sealing means may be a valve member 9, which is embedded in a fast-burning composition 8 extending into a constriction 3 adjacent an electric fuzehead 11 held in the outer casing 1 of the detonator by a neoprene plug 12. Pentaerythritol tetranitrate is used for the charges 10 and 6, as well as for a loose charge 7 filling the space between them. The bridge wire of the fuzehead is coated with a composition comprising lead mononitro resorcinol and cerium, which is ignited on passage of a current of 1 amp. for <SP>1</SP>/ 50  sec. On ignition of the composition 8, the valve member 9 is freed and forced back by the gases against the constriction 3. The valve member may be spherical or frusto-conical. In Fig. 4, member 9 is replaced by a delay composition 19, which on burning forms a plug of slag to seal the constriction. A delay composition 15, Fig. 3, may be placed between the fuzehead 11 and the tube 2. The fuzehead may be high or low tension or replaced by safety fuze. Aluminium powder may be incorporated in charges 10 and 6.
Patent GB-1112579-A (GB)
Title: Improvements in or relating to nuclear reactor fuel elements
Inventor: GITTUS JOHN HENRY
IPC: G21C3/30
Filed: 1964-09-17
Abstract: 1,112,579. Nuclear fuel elements. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 16 Aug., 1965 [17 Sept., 1964], No. 38103/64. Heading G6C. A nuclear fuel element is in the form of a lattice structure made up of pellets of dispersiontype fuel. As shown, L-shaped pellets are arranged in two sets of spaced parallel walls A, B which intersect with one another. The feet 11 of the pellets project into apertures 9 in the other set of walls. In alternative arrangements, the pellets are T-shaped and may have V-shaped co-operating upper and lower edges and undercut and inclined T-arms (Figs. 4, 5, not shown). The assembly of pellets may be housed within an open-ended sleeve and held in position by restraint bars at each end (Fig. 1, not shown). The pellets may comprise uranium dioxide particles dispersed in a matrix of sintered beryllium oxide with a fuel-free beryllium oxide surface layer.
Patent GB-371012-A (GB)
Title: Improvements in electric resistance devices
IPC: H01C10/02
Filed: 1930-12-18
Abstract: 371,012. Liquid resistances. SMITH, F. S., Hotel Bossert, Brooklyn, New York, U.S.A. Dec. 18, 1930, No. 38187. [Class 37.] A water-tube resistance for high voltages is provided with means for cooling the liquid so that its resistance is maintained substantially constant. On a stand 1 of dielectric material is mounted a motor 3 driven from the power line through a transformer 8 and driving a circulating pump 4, by means of which water is circulated through a coiled tube 10, a tube 12, a coiled tube 14, and a tube 16. The tubes 12, 16 are of dielectric material, the tubes 10, 14 being of copper or other metal. Cross-bars 21, 22 connect the tubes 12, 16 in parallel, the liquid in these tubes constituting the resistance. Water is cooled by passage from the lower end of the tube 16 to the lower end of the tube 12 through the coiled tube 10, and also by passage from the upper end of the tube 12 to the upper end of the tube 16 through the coiled tube 14. A chamber 20 permits escape of evolved gases, and also serves as an expansion chamber to compensate for changes of volume of the electrolyte. The tube system may be enclosed in a tubular casing 26 of insulating material open at both ends to facilitate circulation of air, which may be accelerated by means of a fan &c. The resistance may be varied by means of intermediate tappings along the tubes 12, 16. Instead of water, an aqueous solution of copper sulphate may be employed as the electrolyte, its concentration being chosen to give the desired value of the resistance. Alternatively "Manganni's liquid," which is stated to have approximately a zero temperature coefficient, may be employed. This consists of 121 grams of mannite, 41 grams of boric acid, and 0À06 gram of potassium chloride dissolved in sufficient water to make 1 litre of solution.
Patent GB-1432184-A (GB)
Title: Gas turbine engine heat regenerator
IPC: F28D19/04
Filed: 1973-08-13
Abstract: 1432184 Coated thermal regenerator NISSAN MOTOR CO LTD 13 Aug 1973 [15 Aug 1972] 38288/73 Heading B2E [Also in Division F4] The surface of a rubbing seal member 1 contacting the end face of a rotary matrix 2 in a gas turbine engine thermal regenerator includes a porous layer 1e impregnated with a heat resisting lubricant. The porous layer of the seal member 1 is formed and impregnated as follows: an undercoating material such as powdered nickel aluminite is first sprayed on to the surface of the seal member. Then a mixture of powders comprising a first material selected from nickel oxide and cobalt oxide and a second material selected from alkaline earth metal fluorides, phosphates and borates, e.g. CaF 2  is sprayed on to the undercoated surface. The content of nickel oxide or cobalt oxide is preferably 75 to 90% by weight and that of CaF 2  is preferably 10 to 25% by weight. The porous layer is impregnated with a heat resisting lubricant such as graphite, molybdenum disulphide, tungsten disulphide, boron nitride and soricite. The matrix, which may be ceramic, has a honeycomb structure 2a consisting of flat and corrugated plates. A ceramic matrix may be directly impregnated with the lubricant, e.g. by immersing in an ethanolicsolution of boron nitride.
Patent GB-338032-A (GB)
Title: Sewing machine
IPC: D05B27/02
Filed: 1929-12-16
Abstract: 338,032. Fairweather, W., (Singer Manufacturing Co.). Dec. 16, 1929. Feed by dogs; chainstitching.-In machines of the cylinder-bed chain-stitch type, the main shaft 8 extends about half way into the bed 4 and the four-motion feed-dogs 21 are carried by an inverted U-shaped yoke the legs of which are pivoted in crank arms fixed to a feed lift rock shaft extending the whole length of the bed. The main shaft 8 rotates in bearings 5, 6, 7 and has a crank 10 for actuating the pitman 11 to rock the usual needlebar reciprocating shaft 14 in the usual way. The presser-foot 19 is carried by the usual downwardly pressed bar 20. Four-motion feeddogs 21 co-operate with the presser foot to feed the work across the cylinder bed 4, and are re-mounted on the inverted U-shaped yoke 22 which is pivoted by pins 24 in the arms 25 of the feed-lift rock shaft 26 This shaft extends into the standard 1 and has affixed a crank arm 27 connected to the strap 29 of the main shaft eccentric 30, whereby it derives its rocking motion to impart lift to the feed dogs. The feed advancing motion is imparted to the dog by a short rock shaft 31 in the bearing 5, actuated by the main shaft eccentric 35 and pitman 34. The rock shaft is connected to the yoke 22 by an arm 40 carrying an adjustable pin 39 engaging a slot 37 in the crank arm 36. The arm 40 is clamped to a pin 42 on a rocker arm 43 which fits a block 45 pivoted on a pin 46 on the yoke 22. These arrangements allow the pin 39 to be aligned with the pivots 24, and to adjust the feed dogs to a central position in the feed-slots of the throat plate. The loopers 47 are carried on the shaft 49 and driven by the links 55, 54, 52 to synchronize with the needle movements and bv the pitman 61, in the manner described in Specification 337,661. The looper threads are controlled by the levers 67, 69 in the manner described in Specification 338,033.
Patent GB-1356774-A (GB)
Title: Transparent elements
IPC: C03C17/40
Filed: 1972-08-17
Abstract: 1356774 Coated transparent bodies SAINTGOBAIN INDUSTRIES 17 Aug 1972 [19 Aug 1971] 38454/72 Heading C7F A transparent element comprises a transparent support having coated on a surface a layer of Al thick enough to reduce the visible light transmission coefficient by 5-30%, and a layer of gold on the Al layer. Typically, glass is vapour-coated with Al to reduce transmission by 25%, and coated with Au to reduce it by a further 30%, or else glass is vapour-coated with Al to reduce transmission by 10%, coated with gold to reduce it a further 30% and coated with further Al to reduce it a further 25%; this is achieved in a single evacuated chamber containing an Al and an Au source by the use of masks. The resulting bodies are used as windows where transmission of visible light and reflection of I.R. radiation is required; the metal layer is sufficiently conductive to be used as an electric heating element.
Patent GB-1332590-A (GB)
Title: Video signal control circuits for colour television receivers
IPC: H04N5/57
Filed: 1971-08-18
Abstract: 1332590 Colour television SONY CORP 18 Aug 1971 [21 Aug 1970] 38818/71 Heading H4F In a colour television receiver of the N.T.S. C. type the separated luminance and chrominance signals are each simultaneously subjected to amplitude control in response to the average brightness of the display. A display which could otherwise be too bright for a true colour readition is thereby accordingly darked. If however the control is by a simple overall D.C. deduction of the luminance and chrominance signals (stated prior art) a shift in the pedestal or black level is produced resulting in too much darkening in some circumstances. The level controls 5, 8, Fig. 1 are therefore such as to cause an amplification variation of the picture sections only of the luminance and chrominance signals, leaving the pedestal levels unaltered. The brightness of the display is determined by the anode current through the line output transformer secondary 22 said current causing a detector 20 to produce an average brightness voltage. The current detector 20 and level controls 5, 8 are shown in detail in Fig. 2. An increase of brightness current above a threshold, set by voltage divider network 39, 40, 41, causes a brightness indicating voltage V2, becoming less in value for increasing brightness, to appear at output of detector 20. The luminance signal, including the pedestal portions, is applied to transistor 26 to give a proportional current Is, dividing between difference amplifier transistors 28/29. Voltage V2 is applied to transistor 28 and a reference voltage V1, from potentiometer 31, is applied to transistor 29. A potentiometer 37 applies a voltage to transistor 35 such that a current Io flows. This divides between difference amplifier transistors 32, 33 receiving respective voltages V1 and V2. The current in load resistor 30 is partly (t 1 ) from transistor 28, and partly (t 2 ) on transistor 32. α = current amplification, q = electron charge, K = Boltzmann's constant, T = absolute temp. as α # 1. For total current I 1  in load 30 If current Is ,Fig. 3B, is divided into two parts, i.e. id, the pedestal current, and i s  the picture current, such that Is = i d +i s  and potentiometer 37 is adjusted such that Io = i d , then The output voltage is therefore proportional to the picture current or luminance voltage only, the pedestal current i d  not being varied. The chrominance signal, having no D.C. pedestal current (such as id) need only be applied to a transistor 43 forming the current determining means of difference transistors 46, 47. The brightness and constant voltages V2, V1 are applied to transistors 46, 47 respectively to give the chrominance output voltage across load 48 amplified in the same proportion as the luminance signal.
Patent GB-1467737-A (GB)
Title: Apparatus for injecting liquid into a physical vascular system
IPC: A61M5/00
Filed: 1974-09-06
Abstract: 1467737 Reciprocating pumps A VON ROTHSTEIN 6 Sept 1974 [6 Sept 1973] 38934/74 Heading F1A [Also in Division A5] A liquid injecting device comprises a pump, the suction side of which is connected to a container 25 for the liquid to be injected, the pump, when operated, giving a continuous liquid flow and a pump driving mechanism having means, adjustable for a predetermined maximum driving power, to stop the driving mechanism if the pressure in the pumped liquid attains a predetermined maximum value dependent on the predetermined maximum driving power. The pump is driven by compressed air and consists of a piston 20 and cylinder 21, cylinder chambers on either side of the piston being connected by pipes 22, 23 to liquid container 25 and an injection needle 31, non-return valves 26, 27 in pipes 22, 23 permitting flow only from the container to the cylinder chambers, and valves 32, 33 permitting flow only from the cylinder chambers to needle 31. Piston 20 is connected by piston-rod 18 to a piston 16 in a cylinder 17, piston 16 being reciprocated in cylinder 17 by means of compressed air from a source 1, an adjustable pressure regulator 6 being provided to limit the maximum air-pressure supplied to cylinder 17. A control valve 5 in the compressed air system regulates the supply and exhaust of compressed air to and from the chambers of cylinder 17, the supply of compressed air, which adjust the valve, being controlled by valves 8, 9 set by an arm 19 attached to piston-rod 18 when piston 16 reaches the extremes of its movement in cylinder 17. In alternative embodiments piston pump 20, 21 may be replaced by a rotary pump or the compressed air driving mechanism may be replaced by another mechanical or an electrical mechanism with adjustable maximum driving power.
Patent GB-1370229-A (GB)
Title: Variable directional coupler
IPC: H01P5/04
Filed: 1972-08-22
Abstract: 1370229 Waveguide directional couplers INTERNATIONAL STANDARD ELECTRIC CORP 22 Aug 1972 [31 Aug 1971] 39087/72 Heading H1W A drectional coupler is provided with movable plates of dielectric material spaced from and parallel to the common waveguide wall containing the coupling slot. In the short-slot coupler shown, having a coupling slot 5 arranged in the common sidewall 9 of rectangular waveguides 1, 2, trapezoidal dielectric plates 6, 7 are arranged symmetrically on either side of the slot and may be moved in a direction normal to the slot. To this end, the plates are a push fit between buttons 8 of plastic material attached to the broad walls of the waveguides. The variation in coupling coefficient obtained by moving the plates is explained in terms of the influence of the plates on the phase constants of the odd and even modes propagated in the coupler.
Patent GB-362709-A (GB)
Title: Improvements in devices for controlling change speed mechanisms
IPC: F02D1/08
Filed: 1930-12-30
Abstract: 362,709. Controlling change speed gearing. FORICHON, A., 70 bis, Avenue de Suffren, Paris. Dec. 30, 1930, No. 39229. Convention date, Dec. 30, 1929. Addition to 351,024. [Class 80 (ii).] The main patent comprises a two-speed epicyclic gear suitable for vehicles controlled by moving a friction clutch such as 10<1>, Fig. 1, by direct magnetic pull set up by an electric switch 29 operated by a governor 20 driven by the driving-shaft 1. Clutch 10<1> when attracted to electromagnet 3<1> effects a solid high-speed drive. Annulus 3 drives and the carrier 5 of the planets 4 is secured to driven shaft 6. According to this invention, sun gear 8 is prevented from turning backwards for the reduced speed by a brake. A sleeve 7, Figs. 1 and 2, extending from sun gear 8 carries a drum 111 adapted to be held by a brake band 11<2> normally held applied by a spring 42, the low speed being operative. The governor 20 in connecting switch 29, besides sending current from source 34 through coil 12<1>, Fig. 1, to attract clutch disc 10<1>, sends current through a solenoid 41, Fig. 2, which by attracting core 40 frees drum 11<1> from brake 11<2>, allowing solid driving. The governor control spring 25 is attached to the accelerator pedal 22. The gearing is disconnected at any time by depressing pedal 15 which mechanically disengages brake 11<2> and disconnects the battery 34 at 35. The solenoid for disengaging the brake is dispensed with in a described form by arranging between sleeve 7 and drum 11<1> a one-way device or detent. To operate the control switch 29, engine suction may be used as shown in Fig. 6 instead of the centrifugal governor. Suction in chamber 48 raises diaphragm 47 with a rod 50 carrying switch arm 51 against spring 52 acting through toggle 56. The Specification as open to inspection under Sect. 91 (3) (a) describes an arrangement practically identical with that of the main patent. It also describes an arrangement with no electromagnetic gear almost identical with the arrangement struck out from the main patent. This subject-matter does not appear in the Specification as accepted.
Patent GB-1434136-A (GB)
Title: Sintered refractory material
IPC: C23C14/26
Filed: 1973-08-20
Abstract: 1434136 Sintered refractory material ELEKTROSCHMELZWERK KEMPTEN GmbH 20 Aug 1973 [18 Aug 1972] 39320/73 Headings C7A and C7D A sintered refractory material is prepared by hot pressing a mixture consisting of from 10 to 85% of an electrically conducting refractory material (e.g. titanium diboride) from 5 to 30% of aluminium nitride, from 10 to 40% of boron nitride and optionally aluminium boride and/or silicon nitride and additionally 1 to 10% Boron oxide all percentages being calculated on the total weight of the mixture without boron oxide. The boron nitride powder may contain from 5 to 25% boron oxide and may be prepared by calcining in a nitrogen atmosphere at a temperature from 1300C to 1500C after its manufacture from boron oxide and ammonia. The refractory material may be hot pressed at 150 Kg/cm<SP>2</SP> and 2,100C in a graphite mould and formed into evaporator boats and used for the vapour deposition of metal (e.g. aluminium).
Patent GB-1366350-A (GB)
Title: Light-beam modulating arrangement
IPC: G02F1/1335
Filed: 1971-08-23
Abstract: 1366350 Modulating light SIEMENS AG 23 Aug 1971 [28 Sept 1970] 39362/71 Heading H4F When a coherent collimated light beam 1 is variably scattered by an electrically controlled nematic liquid crystal layer 4, the non-scattered coherent light may be separated from the scattered and non-coherent light by being focused by one or more elements 2 co-operating with respective diaphragms 9 arranged at the focal point(s) thereof. In the Figure, layer 4 is addressed by X-Y conductor strips 11, and a lens 2 is provided for each intersection, either mounted in a frame, or formed in the surface of glass plate 5 supporting layer 4. Elements 2 may alternatively be concave mirrors, cylindrical lenses, or Fresnel zone plates. Apertures 9 may be as shown, or in the form of slits, and may be formed in a photographic film or a metal foil (by a thermal effect) by illumination transmitted by the reflecting elements 2. The arrangement may be used as a hologram generator, e.g. for those calculated by computer, or it may be controlled by signal from a television camera to form a coherent image of an incoherently illuminated scene. Reference has been directed by the Comptroller to Specification 1,335,250.
Patent GB-1379718-A (GB)
Title: Differential mechanism
IPC: F16H48/29
Filed: 1973-08-21
Abstract: 1379718 Differential gearing L E NEWENS 21 Aug 1973 39435/73 Heading F2D In a differential gear in which helical control gears H 1 , H 2 , H 3 , H 4  carried by a spider (not shown) mesh with helical gears 14 1 , 14 11 , 15 1 , 15 11 , the helix angles being determined as described in Specification 1,316,121 to provide a semi-locking action, the gears 14 1 , 14 11  are mounted on shafts 12 1 , 12 11  with transfer spur gears 11 L1 , 11 L11  which mesh with spur gears 14 1a , 14 1b , 14 11a , 14 11b  in mesh with one output spur gear 10 L , and the gears 15 1 , 15 11  are similarly connected through shafts 13 1 , 13 11  and spur gears 11 R1 , 11 R11 , 15 1a  &c., with the other output spur gear 10 R . The shafts 12 1 , 12 11 , 13 1 , 13 11  together with the gears 14 1a  &c., 15 1a  &c. are journalled in a casing (not shown) which also carries the spider on which the control gears H 1  &c. are mounted and is driven by input bevel gearing.
Patent GB-1219436-A (GB)
Title: Improvements relating to the manufacture of hollow ceramic articles suitable for use in building construction systems
Inventor: FORD ROBERT WILLIAM
IPC: F26B21/00
Filed: 1968-08-17
Abstract: 1,219,436. Drying of hollow ceramic articles. BRITISH CERAMIC RESEARCH ASSOCIATION. 8 May, 1969 [17 Aug., 1968], No. 39458/68. Heading F4G. Hollow ceramic articles, whose length subtantially exceeds their width or thickness, are dried while supported only by a base-plate 15, so that any change in their dimensions during drying causes no stresses. The base-plate is supported by one or more columns 12, which are hollow and have holes in them, so that hot air directed into the columns from below is impinged on to the inside of the hollow ceramic article, since the columns pass within the latter. A support assembly 5, 6, 7 rides along a conveyer rail 4, and supports a rotatable member 9 fixed to the columns 12. Movement of the support assembly along the conveyer rail will produce rotation of the whole suspended assembly whenever rail 10 which need not be continuous is present.
Patent GB-1174550-A (GB)
Title: Immersion Cooler
Inventor: THORN CARL EDWARD
IPC: F28F27/00
Filed: 1968-08-20
Abstract: 1,174,550. Liquid coolers. ALFA-LAVAL A.B. 20 Aug., 1968 [29 Aug., 1967], No. 39706/68. Heading F4S. An immersion cooler for cooling liquids, e.g. milk, comprises a cylindrical cooling body 1 surrounding a pump rotor 3 carried by a drive shaft 2 which is arranged to be driven at variable speeds. In use the cooler is placed within a vessel containing liquid to be cooled, wherein the liquid to be cooled is pumped upwardly through the cooling body. As shown the shaft 2 is coupled to an electric motor 4 through variable ratio gear means 5. Alternatively the shaft 2 may be coupled to a shaded pole motor (6, Fig. 2, not shown) the speed of which is varied by means of a voltage divider.