baber/WOPTO huggingface dataset:
Patent GB-970388-A (GB)
Title: Device for light control
IPC: H04N5/66
Filed: 1960-11-22
Abstract: 970,388. Television. AGFA A.G. Nov. 22, 1960 [Nov. 26, 1959], No. 40181/60. Addition to 902,384. Heading H4F. In a light valve which controls light by the variation of refractive index of a medium at a control surface by means of control signals, the control surface consists of a plurality of sections inclined to the direction of incidence of the light, the sections being arranged upon a surface that is substantially perpendicular to the exit direction of the controlled light. In one embodiment, Fig. 1 (not shown), and Fig. 2, light from a sourle 14 passes via a lens 15 to the light valve, a section of this being illustrated. The valve comprises a medium 1, e.g. glass, having a sawtooth profile, the sawtooth surrface 10, 11 having electrodes arranged thereon. Application of a potential to these electrodes produces a variation in the refractive index of the medium 9 so that the percentage of light transmitted by the surface 10 also varies. The reflected portion of the incident light is absorbed at surface 11. If the length of each sawtooth is divided up into a plurality of sections, each section being insulated from its neighbour, each section may be energized in turn to provide a mosaic, or raster. By this means the invention may be used as an image converter or projection television screen. Further embodiments of the light valve are described with reference to Figs. 3 and 4 (not shown).
Patent GB-1445151-A (GB)
Title: Apparatus for determining the wall thickness of specimens such  as plates or the like by ultrasonic methods
IPC: G01B17/02
Filed: 1973-08-24
Abstract: 1445151 Ultrasonic thickness gauge KRAUTKRAMER GmbH 24 Aug 1973 [29 Aug 1972] 40281/73 Heading H4D In a system for measuring the wall thickness of a specimen, by transmitting an acoustic pulse into the specimen to excite a wall resonance and determining the oscillation frequency of a time-gated portion of the resulting wavetrain received from the specimen, a clocked counter is arranged to count upwards from an initial value for the duration of the transmission pulse and is switched to count downwards when the leading edge of the wavetrain is received. When the initial count value is reached, a delay period (a selected number of oscillation cycles of the receiver signal) elapses before a frequency counter for determining the oscillation frequency is switched on. The required time-gate thus includes a substantially pure (decaying) sinusoidal portion of the wavetrain. A gated portion of the wavetrain is also fed back to the transmitter to re-excite the wall resonance (a noise generator having been used for the initial excitation). The apparatus is adjusted to give maximum deflection on a received signal amplitude monitor.
Patent GB-935969-A (GB)
Title: Improvements in chairs
Inventor: RICHARDSON RONALD WILLIAM
IPC: A47C1/027
Filed: 1961-11-10
Abstract: 935,969. Adjustable back rests. A. ARENSON Ltd. Aug. 1, 1962 [Nov. 10, 1961], No. 40370/61. Class 52 (2). A chair includes a back rest 4 which is vertically and angularly adjustable by adjusting means which comprise a pair of laterally spaced slotted links 6 mounted on the back rest 4 for pivotal movement in a vertical plane about vertically spaced horizontal fulcrum points 2, the links 6 converging rearwardly towards a back rest support 10 to which they are connected by a pin 12, a bifurcated bearing member 11 and saddle clamping members 15. The vertical and angular adjustments are made by pivoting the members 15 about the pin 12 and sliding the links 6 along the members 15, then a looking knob 5 secured to the pin 12 is tightened so that the clamping members 15 frictionally engage the links 6 and teeth 16, 17 on the members 15, 11 respectively, interengage to clamp the head rest in position.
Patent GB-970909-A (GB)
Title: Spiral spring for measuring systems
IPC: G01P3/495
Filed: 1962-10-25
Abstract: 970,909. Indicating-apparatus, speedometers. KIENZLE APPARATE G.m.b.H. Oct. 25, 1962 [Nov. 7, 1961], No. 40400/62. Headings G1J and G1K. In order to avoid unwanted torsion moments which might falsify the characteristic line of a spiral spring in a measuring system with tappings arranged on the spring turns which in co-operation with a stationary stop permit different lengths of the spring to become effective, the tappings are formed either as eyes 4 impressed directly into the spring 1 and lying in the spring plane, Fig. 2, or as riders 18 mounted on the measuring system shaft 14 through a support lever 20, Figs. 4, 5. The rider 18 is in the form of an eye firmly connected to the turn section at the required point, the outer end 15 of the spring is secured to the housing and the inner end to the shaft 14. The lever 20 turns clockwise as the measured value increases and until it encounters a stop 21 the whole spring is effective, thereafter the outer part between the tapping point 16 and fixed point 15 becomes ineffective so that the spring constant is in effect increased abruptly at this deflection. As shown in Fig. 2, spring 1 is secured to shaft 3 and has an outer securing point 6. The outer end 5 beyond the point 6 is crooked and hooked over the eye 4 so that for a small clockwise rotation of shaft 3 the outer part 1<SP>1</SP> of the spring between point 6 and eye 4 is ineffective. The part 1<SP>1</SP> becomes effective as well when the deflection is sufficient to pull the eye 4 free from the crook 5, thus giving an abrupt decrease to the effective spring characteristic. These changes in the effect of the spring may be used for opening a scale out over a desired range of values or in a non-linear measuring system such as an eddy-current system, an approximation to a linear scale can be effected.
Patent GB-1354755-A (GB)
Title: Distance measuring equipment
IPC: G01S13/87
Filed: 1971-09-01
Abstract: 1354755 Pulse radar MARCONI CO Ltd 1 Sept 1971 [2 Sept 1970] 40719/71 Heading H4D In apparatus for measuring distance to two ground beacons simultaneously a pulse-modulated transmitter and a receiver are connected to a common aerial through a transmit-receive filter, two beacon coding means are connected to a modulator (each comprising a pulse generator, a channel selector and an interrogation coder), two reply recognition units are connected in parallel to the receiver each being connected to a corresponding distance-measuring unit, and distance indicator means and beacon identification means are provided. The latter may be a decoder responsive to beacon identification signals and producing a corresponding aural output, the decoder being connected to both reply recognition units through a changeover switch. The distance indicator means may comprise two separate digital indicators or a switched single indicator. The beacon coding means may operate at different repetition frequencies.
Patent GB-1263345-A (GB)
Title: Process for preparing pure 4-bromo-3-hydroxyquinophthalone
Inventor: SPIETSCHKA ERNST
IPC: C09B25/00
Filed: 1969-08-18
Abstract: 1,263,345. Quinophthalone dye. FARBWERKE HOECHST AG. 18 Aug., 1969, No. 41154/69. Heading C4P. 4-Bromo-3-hydroxy-quinophthalone is prepared by brominating 3-hydroxy-quinophthalone in 80-100% H 2 SO 4  at 0-40‹ C., optionally using I 2  as catalyst.
Patent GB-1184216-A (GB)
Title: Filter Control Device for a Photographic Camera
IPC: G03B19/18
Filed: 1967-09-08
Abstract: 1,184,216. Photographic filter control devices. FUJI SHASHIN FILM K. K. Sept. 8, 1967 [Sept. 30, 1966], No.41166/67. Heading G2A. In a photographic camera, there is provided a control device to set filters of the camera lens system so as to take into account the spectral condition of the prevailing illumination and the spectral sensitivity of the film used. When a film cartridge, e.g. containing film suitable for use in tungsten lighting, is inserted switches (E, F) and (G, K) Fig.2, (not shown) of a selection switch 9 are closed. If the prevailing illumination is tungsten lighting, filters 1, 2 change the light intensity falling on to photoelectric elements 3, 4 causing an unbalance of the bridge circuit to which they belong, and thus causing switch 5<SP>1</SP> to take up the dotted line position. However, no current flows through the switch 9, so colour correction filters 13, 14 remains with grey filters N in front of the taking lens 11 and the photo-electric element 12 for exposure control. If the prevailing illunination is daylight, the light intensity falling on the photo-cells 3, 4 causes the switch 5<SP>1</SP> to take up the solid line position current then flows through the switch 9 causing a driving device 10 to shift the filters 13, 14 so that amber filters are in front of the lens 11 and element 12. For daylight film, switches (H, I) and (K, J) are closed. The photo-electric elements 3, 4 respond to daylight and tungsten lighting as before, but in this case no current flows through the selector switch 9 for daylight, and filters N are in front of the lens and element 12. Tungsten lighting causes the device 10 to shift the filters 13, 14 so that blue filters B are in front of the lens 11 and the element 12. The filters 13, 14 are biased so that when no current flows through the device 10, the central filter remains in the operative position.
Patent GB-1198399-A (GB)
Title: Improvements in Press Tools and Die Sets
IPC: H01R43/042
Filed: 1968-08-29
Abstract: 1,198,399. Crimping tools. AMP. Inc. 29 Aug., 1968 [13 Sept., 1967], No. 41258/68. Heading B4W. [Also in Division B3] A press tool has at least three die members co-operable on actuation of the tool to define a die space for receiving and compressing a workpiece, the die members each having a die face for defining part of the periphery of the die space, two of the die members being movably mounted on a common carrier for limited relative movement between a closed position in which the die faces of the two die members are disposed in continuous relation with opposed side faces of the die members in abutting relation and an open condition by a spring biased between the carrier and a portion of each die member spaced from the respective die face. Jaw members 39 are formed with pins 42 which engage elongated slots 49 in respective die members 45 for sliding movement of the dies along side walls 41. The dies 45 are biased towards the open side of the recess 40 by springs 44 seated in aperture 43 and the movement of the dies is limited by engagement of the pins 42 with the ends of the slots 49. The dies 45 slide along the surfaces 41 and ribs 51a as the jaw members are closed together until a circular section die cavity is defined. The work piece is compressed and parts of the workpiece are extruded into V-grooves formed by chambers 47. In another embodiment tool handles 54 are closed together so as to close jaw members 61 by pivoted movement about respective pivots 62 as the plunger 63 is driven between the jaws towards die surfaces 74 of the jaws. Dies 71 are biased by springs to rotate oppositely about a pivot 73 such that as the jaws move towards a position of abutment of surfaces 61b, the die surfaces 74 engage with a workpiece and the jaws 61 engage with the outer sides of the dies 71. This effects a pivotal movement of the die 71 about the pivot 73 to close the die surfaces 74 to a semi-circular configuration so as to compress the workpiece and extrude parts of the work piece into V-grooves formed by chamfers at the ends of the die surfaces 74.
Patent GB-1066348-A (GB)
Title: Process for preparation of carbon-containing additions of optimal effect for moulding sands
IPC: B22C1/04
Filed: 1964-10-09
Abstract: 1,066,348. Mould and core materials. VEREIN ZUR FÍRDERUNG GIESSEREI INDUSTRI. Oct. 9, 1964 [Oct. 10, 1963; Oct. 16, 1963], No. 41413/64. Heading B3F. Natural or synthetic moulding sands having a quartz sand base with conventional binders have added to them, separately or premixed, a carbonaceous substance with a softening index, as defined in the Specification, of between 0À2 and 0À7 and a further carbonaceous substance which has more than 50% volatile components, e.g. brown coal, peat, sawdust. The first carbonaceous substance may be a mixture of coal dust and bitumen.
Patent GB-904239-A (GB)
Title: Improvements in or relating to methods for producing ultra-pure silicon
IPC: C01B33/035
Filed: 1959-12-09
Abstract: <PICT:0904239/III/1> In the method for producing ultra pure Si described in Specification 853,729, the stream of gas to the reactor is preheated.  A Si carrier member is disposed in a glass or quartz vessel 10, at least part of which is transparent, and the Si rods 9, on graphite holders 11 and connected by a Si bridge 12 are heated by A.C. from 8.  A stream of gas, e.g. H2 from 1, is fed via valves 2 and 3 and flow meter 4 to a gas evaporator where it mixes with reaction gas, e.g. SiCl4, and is fed to the reactor, e.g. via 6 to nozzle 7, so that a reaction, e.g. thermal decomposition or reduction, occurs resulting in the deposition of Si on the carrier. The reactor temperature is kept at 300 DEG  - 800 DEG C. during the deposition of Si so that the vessel remains transparent, or partly so, and the coated Si produced is divided into at least 2 parts, at least one of which is used as a carrier for further deposition.  The inlet gas 6 is in heat exchange with the spent gases in 13, which is thermally insulated.  The pipes may be of Ag or Cu.  The gas feed to 10 may also be preheated by electrically heating pipe 6 or extending it through a furnace.
Patent GB-903564-A (GB)
Title: Process for making foamed styrene polymers
Inventor: HANSON WILLIAM JOSEPH
IPC: C08J9/12
Filed: 1960-12-06
Abstract: Foams are produced from thermoplastic organic polymers using as the expanding agent a hydrated inorganic salt or mixture thereof capable of evolving water of crystallization at the plastifying temperature of the polymer.  Polymers operable in the process are homopolymers of styrene, copolymers of styrene and minor amounts of acrylonitrile or methyl methacrylate and blends of styrene polymers with 2-15% of one or more rubbery butadiene-styrene polymers.  Numerous hydrated inorganic salts are specified; those used in the examples are Al2(SO4)3 18H2O, Al2(SO4)3 K2SO4 24H2O and Na2S2O3 5H2O.  Optionally nucleating agents, e.g. finely divided aluminium oxide, calcium silicate, diatomaceous earth, sodium bicarbonate, magnesium carbonate, calcium carbonate, zinc oxide and titanium dioxide, and liquid plasticizers, e.g. white mineral oil, soy bean oil and butyl stearate may be added to the foamable mixture.  The various ingredients of the foamable mixture are blended together and extruded at temperatures from about 140 DEG  to 160 DEG C.ALSO:Foams are produced from thermoplastic organic polymers using as the expanding agent a hydrated inorganic salt or mixture thereof capable of evolving water of crystallisation at the plastifying temperature of the polymer.  Polymers operable in the process are homopolymers of styrene, copolymers of styrene and a minor amount of acrylonitrile or methyl methacrylate and blends of styrene polymers with from 2 to 15% of one or more rubbery butadiene-styrene polymers.  Numerous hydrated inorganic salts are specified; those used in the examples are Al2(SO4)3,18H2O, Al2(SO4)3,K2SO4,24H2O and Na2S2O3,5H2O.  Optionally nucleating agents, e.g. finely divided aluminium oxide, calcium silicate, diatomaceous earth, sodium bicarbonate, magnesium carbonate, calcium carbonate, zinc oxide and titanium dioxide, and liquid plasticizers, e.g. white mineral oil, soy bean oil and butyl stearate may be added to the foamable mixture.  The various ingredients of the foamable mixture are blended together and extruded at temperatures from about 140 to 160 DEG C.
Patent GB-1100820-A (GB)
Title: Improvements in or relating to data processing arrangements
IPC: G02F3/00
Filed: 1966-09-20
Abstract: <FORM:1100820/C4-C5/1> A logic circuit arrangement has a number of logic elements each element having an electro-luminescent diode, e.g. 1K (of GaAS for instance), and a photo-detecting diode, e.g. 2K, the arrangement including a number of diffraction gratings, e.g. 13K, each being arranged to reflect the output light beam of a particular element as input to a selected one of the remaining elements.  Each element functions as a NOR-gate (Fig. 1, not shown), a continuous output light beam being emitted by the electro-luminescent diode until back-biased when the photo-detecting diode conducts, i.e. until an input beam is received from any other element. Input variables in binary form are fed to electro-luminescent diodes 2a-2i, and the particular logical function performed by the complete circuit may be changed by rearranging the diffraction gratings.  A reflection surface 14 is placed behind the gratings to intensify the beams of light reflected from the gratings.  In an alternative embodiment (not shown) the reflecting gratings may be replaced by equivalent transmission gratings, the photo-detecting diodes being mounted behind the gratings.
Patent GB-1359228-A (GB)
Title: Winding method of producing a low friction surface
IPC: F16J15/32
Filed: 1971-09-09
Abstract: 1359228 Method of covering cores by winding C S WHITE 9 Sept 1971 [28 Sept 1970] 42144/71 Heading B8G [Also in Division F2] A bearing surface is made by winding a multiplicity of juxtaposed turns of fluorinated hydrocarbon polymers on to a bearing element, said turns having been impregnated with a bonding resin and being in a solidified yet thermoplastic state, and then treating the wound element to coalesce the resin into a continuous solidified matrix. The thread may be of polytetrafluoroethylene. The thread may be coated with a resin before being wound, the resulting winding being subjected to pressure and heat to compact the threads and cure the coating thereon. The thread may comprise a plurality of filaments that are twisted or braided together and a wire may extend along the centre of such a thread. Inter-related with the low friction filaments may be fibres of a readily bondable material. A layer of metal may be applied to the low friction material before it is wound around the core, and resin applied to the metal surface on the thread. Fig. 14 shows a bearing sleeve 42 made by this method, the sleeve 42 comprising an outer body made from bondable cord 38 and an inner and end surface made from low friction cord 32 to provide low friction surfaces on the interior and one end of the sleeve. The sleeve 42 is chamfered at 45 and the body 38 is chamfered at 46 to facilitate the insertion of the sleeve into an aperture and the insertion of a shaft within the bearing sleeve. Fig. 18 shows a ball stud having bondable cord 62 wound on to a corrugated stud portion 61 to form a truncated ball. The cord 62 is cured and low friction cords 32 are then wound thereon, compacted and cured to provide low friction truncated ball.
Patent GB-1164501-A (GB)
Title: Improvements in or relating to Endless Belt Conveyors
IPC: B65G21/04
Filed: 1966-09-22
Abstract: 1,164,501. Endless conveyers. WESTINGHOUSE AIR BRAKE CO. 22 Sept., 1966 [22 Oct., 1965], No. 42410/66. Heading B8A. For resiliently supporting the long span of a loaded conveyer belt 23 between roller assemblies 27, 47, a roller assembly 50 is mounted on a frame 60 of which T-shaped members 65, 67 bear on coil springs 75. The springs are located within tubular uprights 62, 63 which telescopically receive the T-shaped members 65, 67. The frame 60, with its assembly 50, is "free-standing" i.e. does not rely for support on other parts of the conveyer. The tail section of the conveyer includes a frame structure 11 which supports a hopper 17 provided with skirts 21, 22 and an end apron 20, the structure 11 being mounted on skids 12, 13. A rope sideframe for troughing roller assemblies 27, 28 of the tail section comprises a pair of wire ropes 24 which are resiliently tied-off by springs means 26. The main rope sideframe of the conveyer includes ropes 44 which are supported by ground stands 40.
Patent GB-1003382-A (GB)
Title: Improvements in and relating to garments and methods of forming the same
Inventor: GEIPEL UDO
IPC: D04B1/24
Filed: 1963-10-28
Abstract: 1,003,382. Knitting. PASOLDS Ltd. July 1,1964 [Oct. 28, 1963], No. 42431/63. Heading D1K. [Also in Division A3] Briefs for men or women, shorts and swim suits are made from a length or lengths of tubular knitted double fabric in which at least one lengthwise knitted-in panel III is formed of two separate layers, the remainder of the tube comprising layers, I or II knitted together e.g. by a thread d. The fabric is knitted on a cylinder and dial machine with twice as many needles per inch over the section(s) III as over the rest of the tube, e.g. twenty and ten needles per inch respectively. The gauge of the needles may be increased gradually in the edge regions of the section(s) III. Lay-outs for cutting out girls' or boys' briefs may be as described and shown in Specification 965,067.
Patent GB-1472264-A (GB)
Title: Electromagnetic injection valves
IPC: F02M51/06
Filed: 1974-10-02
Abstract: 1472264 Electromagnetically operated fuel injector ROBERT BOSCH GmbH 2 Oct 1974 [3 Oct 1973] 42684/74 Heading F1B [Also in Divisions B3 and F2] An electromagnetically actuated fuel injector valve incorporates within a housing, an iron core surrounded by a magnetizing coil and, arranged coaxially with the core, an armature 12 carrying a valve needle 13. In order to avoid clogging of the valve passages with adhesive during assembly of the valve needle 13 to the armature 12, the needle 13 is fitted into the armature 12 by swaging. The top of the needle 13 is formed as a head with circumferential tapered grooves 32 which are fitted into a bore 28 in the armature 12. The armature 12 is formed with a stepped outer surface 30 having a diameter greater than its finally intended size. To fit the two members together, the armature 12 with the needle head 26, in the bore 28 are forced by a die 33 through a circular hole in a die 31. Flats 30 are formed on the sides of the needle head 26 to allow passage of fuel.
Patent GB-952207-A (GB)
Title: Improvements in or relating to transmission chains and method for the production thereof
IPC: F16G13/08
Filed: 1960-12-14
Abstract: A method of heat treating a steel pin and bush for a transmission chain comprises forming a diffusion alloy with at least one other metal on the surfaces of the members, carburizing the alloy surfaces, heating and quenching the members to form globular carbides in the surface layers and cause the remainder of the members to attain a martensitic structure..  The carburizing may be a carbon-nitriding process and the heat treatment may comprise heating in an inert atmospheree at 700 DEG C. for 2 hours, then raising the temperature rapidly, e.g. 10 DEG C. per minute, to 920-950 DEG C. and quenching. The alloying elements and the amounts in which they may be used are as follows:  Mn. 10-15% ; Si. 60-70% ; B, 4-5%; Cr, 50-60% ; W, 50-60% ; Mo, 30-40% ; Ta, 25-35% ; V, 25-35% ; Ni, 50-60% ; Co, 15-25% ; Zr, 20-30% ; Ti, 30-40% ; U, 1-2% ; and Be, 5-10%.
Patent GB-1031317-A (GB)
Title: A method for the production of ingots
IPC: B22D11/112
Filed: 1964-10-21
Abstract: 1,031,317. Casting processes. WARGONS A.B. Oct. 24, 1964 [Oct. 22, 1963], No. 42994/64. Heading B3F. A method of making an ingot comprises pouring molten metal into a mould and adding a granular or pulverulent metallic material to the surface of the molten metal at a distance from the wall of the mould so as to produce an ingot having a surface layer which is free from the added material. The added material is first supplied as comparatively coarse particles and then as comparatively fine particles, and an additional quantity of molten metal is added to the top of the ingot after the granular material has been added. The process may be applied to continuous casting molten metal and solid particles being alternately supplied to the mould. The particles, which are projected at high velocity into the molten metal, are cleaned and preferably supplied in a protective gas and may have a coating of, e.g., NaOH or NaF and be preheated. Iron or low alloy steel may be added to stainless steel to produce a coated ingot which is subsequently rolled to produce stainless steel compound sheet.