baber/WOPTO huggingface dataset:
Patent GB-1152719-A (GB)
Title: Gas Discharge Lamps.
IPC: H01J61/74
Filed: 1966-08-25
Abstract: 1,152,719. Metal-vapour lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 25 Aug., 1966 [28 Aug., 1965], No. 38114/66. Heading H1D. A thermionic-cathode discharge lamp in which radiation emission from the positive column occurs, contains a rare gas at a pressure between 0À1 and 10 Torr and an alloy of at least two vaporizable metals, at least one of which is an alkali-metal, the operating wall temperature of the lamp being chosen such that, in the positive column, at least 20% of the total number of atoms of the metal having the lower ionization potential is ionized whilst the density of the vapour of the metal having the higher ionization potential is such that optimum radiation generation is obtained. Thus, one of the metals provides for current conduction and the other for radiation. Due to the low pressure of the first constituent a certain degree of saturation of the ionization in the positive column is reached. A positive voltage/current characteristic is obtained so long as the potential gradient is insufficient to cause ionization of the second constituent or of the rare gas. Hence the usual ballast resistor may be omitted. The graphs of Fig. 2 (not shown) show that the maximum of the voltage/current characteristic is reached at a current value which increases with wall temperature. Since the pressure of the light-producing constituent also depends upon the wall temperature, this may be chosen as a compromise between efficiency and light output. It may be regulated by means of a heating wire in the outer tube 6. The pressure p‹ of the current-conducting constituent may be determined from the desired current density using the formula 1À8 x 10<SP>-3</SP> j/V d  < pD < 9 x 10<SP>-3</SP> j/V d  where p<SP>D</SP> is given in Torrs and V d  is the drift velocity of electrons in the positive column. The rare gas may be argon at a pressure of 3 mm. (krypton and xenon may also be used). The alloy may consist of 45 atom per cent of Hg and 55 atom per cent of Cs and the lamp may be operated at a wall temperature between 353‹ and 403‹ K. In a further example, the alloy consists of 98 atom per cent of Na and 2 atom per cent of Hg, the temperature being about 483‹ K. When Na is chosen as the lightemitting constituent, the alloy may contain less than 1% of Cs at a temperature between 483‹ and 543‹ K. The tube may be operated on A.C. or D.C. and comprises two cathodes 2, 3 surrounded by nickel rings 4, 5.
Patent GB-890263-A (GB)
Title: Improvements in or relating to electric relays
Inventor: MILLER JOHN TATE
IPC: H01H50/30
Filed: 1959-11-11
Abstract: 890,263. Electromagnetic relays. REYROLLE & CO. Ltd., A. Nov. 11, 1960 [Nov. 11, 1959], No. 38237/59. Class 38 (5). The contact-controlling member of a relay is biased to a normal rest position and an " antishock " body is mounted in the path of movement of the contact-controlling member close to its normal rest position and is of such a relative mass so as to prevent contact operation due to mechanical shock. As shown in Fig. 1, the member C is pivoted at C<SP>1</SP> and biased by a spring D to a normal rest position against a stop E. A highly flexible spring G is secured to the member C near its pivotal axis and the " anti-shock " body F is mounted thereon close to or in engagement with the end of the member C which engages the stop E. When the relay is energized an armature (not shown) applies a substantial force to the member C so that the body F moves with the member C and a contact A<SP>1</SP> engages a fixed contact A. If a mechanical shock is transmitted by the stop E to the member C, the kinetic energy transferred to the body F will be dissipated mainly against the action of the spring G. In an alternative arrangement (Fig. 2) the body F is freely suspended by a wire or nylon thread G<SP>1</SP> and shock energy is dissipated against gravity. Fig. 4 shows a relay, including a coil J and contact spring M, in which the armature H is the contact-controlling member carrying the spring G and " anti-shock " body F.
Patent GB-1389124-A (GB)
Title: Sample taker to extract samples automatically and continuously
IPC: G01N1/20
Filed: 1972-08-17
Abstract: 1389124 Sampling granular material E KELLY 10 April 1973 [17 Aug 1972] 38330/72 Heading B8N An apparatus for continuously taking a sample from a stream of falling material comprises a hollow sampling member CY rotatable about a horizontal axis and provided with one or more inclined slots S, S1 or S2, which traverse the width and breadth of the stream upon rotation. The material falls from an adjustable outlet of a feed hopper FH on to the revolving sampling member and a sample is taken in through the slots and discharged from the drum mainly at both ends into a collecting hopper with the aid of a guide plate (GP), Fig. 2 (not shown), the sample being directed to a collection point or to a point for further sampling. The bulk of the material from the hopper FH is deflected to each side by the outer revolving surface of the sampling member. The size of the slots may be adjusted by movable plates (A), Fig. 3 (not shown).
Patent GB-1198643-A (GB)
Title: Production of Carbon Tetrafluoride.
IPC: C07C17/007
Filed: 1967-08-21
Abstract: 1,198,643. Carbon tetrafluoride. E.I. DU PONT DE NEMOURS & CO. 21 Aug., 1967 [23 Aug., 1966], No. 38429/67. Heading C2C. [Also in Division C1 Carbon tetrafluoride is obtained by a con tinous process which comprises continuously flowing a stream of gaseous chlorine and a stream of molten calcium fluoride countercurrently to each other through a vertically elongated mass of carbon particles, the molar ratio of chlorine to calcium fluoride being from 1 : 4 to 4 : 1, and the mass being composed predominantly of carbon particles having a maximum dimension measured in any direction of from # inch to 2 inches or 1/16 of the minimum transverse dimension of the mass of carbon particles, whichever is the smaller, the temperature in the zone being from 1300‹ to 2500‹ C. and the gaseous chlorine pressure being between atmospheric pressure and eight atmospheres absolute as the stream enters the mass, thereby forming a gaseous product comprising a major percentage of carbon tetrafluoride and a minor percentage of chlorofluorocarbons (chlorine-free basis) and a molten by-product comprising calcium chloride and calcium fluoride, continuously removing the gaseous product, separating from the product a gaseous fraction consisting essentially of chlorine and chlorofluorocarbons, and adding the gaseous fraction to the stream of gaseous chlorine, continuously removing the molten by-product at a temperature above 800‹ C., separating from the said by-product a fraction consisting essentially of calcium fluoride, and adding the said fraction to the stream of calcium fluoride, and adding carbon particles to said mass to maintain the size of the mass and the average particle size within desired operating limits. The calcium fluoride may be separated from the molten by-product by rapid cooling to 400‹ C. or below in a bath of cooling fluid, e.g. water, and dried at 500‹ to 900‹ C. The quenching action may be accomplished concurrently with impingement of a water jet against a stream of the molten by-product.
Patent GB-1405041-A (GB)
Title: Methods and panels for outdoor billing
IPC: G09F15/00
Filed: 1973-08-14
Abstract: 1405041 Frames for posters NEUE GES FUR SCHOPFUNGEN AG 14 Aug 1973 [22 Aug 1972] 38495/73 Heading A4X [Also in Divisions F2 and G5] An outdoor sign that eliminates internal condensation comprises a backing plate 1 with an overlying transparent plate 2 between which a bill or poster is sandwiched, an air-tight seal being established between the plates at their periphery by crushable seal member 9 including O-ring 13 such that when vacuum is applied through pipe 5, the plates are pressed together. The edges of plate 1 may be off-set as shown, or a planar plate may be used with a simple sealing ring. Plate 1 may be transparent for rear illumination.
Patent GB-1236856-A (GB)
Title: Refractory, fired magnesia brick
IPC: C04B35/03
Filed: 1969-08-01
Abstract: 1,236,856. Magnesia brick. OSTERREICHISCH-AMERIKANISCHE MAGNESIT A.G. 1 Aug., 1969 [5 Aug., 19681, No. 38805/69. Addition to 1,221,401. Heading C1J. A fired magnesia brick contains 1-8%, based on the weight of magnesia, of alumina and less than 1% Fe 2 O 3 , has a lime/silica ratio from 1À65: 1 to 2À50: 1 by weight and is composed of more than 50 wt. per cent coarse-grained magnesia having a particle size of at least 0À3 mm. and having a lime/silica ratio of 1À70:1 to 5À0:1, less than 50% fine-grained magnesia having a particle size of at most 0À2 mm., and at least 2% of fine-grained magnesia having a lime/silica ratio below 1, the coarse-grained magnesia and the total fine-grained magnesia containing less than 1% Fe 2 O 3 . The bricks are pressed from a mix containing magnesia particles, 1-8% alumina particles, e.g. corundum or fused corundum of below 4 mm., and a binder such as tar, pitch, bitumen or a pitch produced by the evaporation of sulphite liquor. When the alumina is below 0À12 mm., 1-10%, based on the weight of magnesia, of sodium metaphosphate or dicalcium phosphate can be added to prevent the #-# transformation of dicalcium silicate. The magnesia grains used can be either sintered or fused.
Patent GB-1317016-A (GB)
Title: Apparatus for use in a game of chance
IPC: A63F3/00
Filed: 1970-07-13
Abstract: 1317016 Indoor games H W FILARSKI 13 July 1970 [11 July 1969] 33863/70 Heading A6H Apparatus for playing a football or other field game comprises a board having an equal number of positions for each player the total arrangement of positions being a mirror image of the arrangement of the positions of the other player, the positions of each player being divided by mutual connecting lines into four positions A of attacking, five positions B of defending and two positions C of simultaneous attacking and defending. A random selection device is used to associate the positions with numbers. To find the winner the numerical values for each of the positions of each attacking group are added and from this value is subtracted the sum of the numerals of the positions composing the opposite defending group.
Patent GB-1162096-A (GB)
Title: Pulse Allotting System for Curve Tracing Equipment
IPC: G06K15/22
Filed: 1966-08-31
Abstract: 1,162,096. Tracing curves. TOYO DENKI SEIZO K.K. Aug. 31, 1966 [Sept. 7, 1965], No. 38909/66. Heading G1X. In a curve tracing system in which pulses are allotted corresponding to X and Y axes according to whether a successive series of points having known chosen co-ordinates lie on one side of the curve to be traced or the other, each pulse represents increments of #x or #y along the corresponding X and Y axes, and each point of the series at which a judgement is effected has co-ordinates displaced by values of ¢#x and ¢#y from the point to which the curve has already been traced to provide a better approximation to the curve. The figure represents a small area in a co-ordinate system containing the curve to be traced, the area being a square S with sides #x and #y, the curve to be traced being represented as a straight line 3 passing through the square, and which divides the square S into two regions P and N. In accordance with the invention a judgement is effected as to whether the point 1, with co-ordinates displaced by ¢#x and ¢#y from the corners of the square S lies on one side of the line 3 or the other. It is shown in the region N so that in tracing the curve a pulse is allotted corresponding to the Y axis i.e. the side of the square denoted by the arrow 5 represents the best approximation to position of the line 3 within the scope of the digital system used. If desired a further judgement may be effected at a point 2, and if this is found to lie on the same side of the line 3 as the point 1 then the original pulse allotment stands. If however it is found to lie on the opposite side of the line 3 to the point 1, then a pulse is simultaneously allotted corresponding to both X and Y axes, this effectively representing the fact that the best approximation to the line 3 is a diagonal of the square S i.e. the resultant of the pulses represented by the arrows 4 and 5. In the Specification there is described the tracing of various curve shapes using a sequence of incremental steps employing in effect a series of squares as S above. It is shown that the invention provides a closer approximation to the curve to be traced than methods which only use the co-ordinates of corners of the squares, as S, for determining the position of the traced curve.
Patent GB-1361295-A (GB)
Title: Electron beam recorder
IPC: H04N5/84
Filed: 1971-08-20
Abstract: 1361295 Colour television NIHON DENSHI KK 20 Aug 1971 [20 Aug 1970] 39292/71 Heading H4F [Also in Division H1] An election beam recorder for recording a plurality of signals at different positions on an elongated recording medium, such as a photographic film, comprises a plurality of electron guns 28a, 28b, a common condenser lens 23 for converging the beams, the beams intersecting at the centre of the condenser lens, common scanning means to cause them to scan different areas on the recording medium, and means for supporting and conveying the medium (Fig. 3, not shown). Application may be to recording T.V. colour picture information in monochrome, the brightness signal (Y) being recorded in one of the frames of a first row of frames and the colour signal produced by mixing two dissimilar signals (e.g. B-Y and R-Y) being recorded in a corresponding frame of another parallel row of frames. A magnetic rather than electrostatic lens may effect beam rotation as well as convergence in which case the guns are preferably rotatably mounted. Base 29a slides on member 29b by screw 30 and rotation is effected by gears 34, 35. Preferably the beam intersecting angle is adjustable so that the distance between impinged areas can be changed without moving the recording medium. The condenser lens includes diaphragm 26 and the distance between guns (3a) (3b) Fig. 1 (not shown) and the condenser lens is # twice, preferably five times the distance between the lens and recording medium specific angles and linear dimensions being exemplified and indicated as producing minimal raster distortion. Chambers 10, 11 may be 10<SP>-4</SP> torr pressure, chambers (12a, 12b) (Fig. 3, not shown) at 10<SP>-1</SP> torr by pumps to outlets 13b, 13a. Diaphragm 37 enables chambers 10, 11 to be mutually isolated for exposure of one to the atmosphere. Beam intersection at the lens may be achieved alternatively by deflection and the number of guns increased according to number of signals required.
Patent GB-1088362-A (GB)
Title: Improvements in or relating to means for transporting particulate material
Inventor: MACMILLAN WILLIAM ROBERTSON
IPC: B24C9/00
Filed: 1965-09-16
Abstract: 1,088,362. Reciprocating conveyers. TILGHMAN WHEELABRATOR Ltd. July 21, 1966 [Sept. 16, 1965], No. 39529/65. Heading B8A. Apparatus for conveying particulate abrasive material from the floor of a blasting chamber (not shown) comprises grids 14-16 carried by bearings 17 mounted on shafts 19, 20 which are mounted for eccentric rotation adjacent their ends. The shafts are rotatable by chains 23, 26 and a motor 21. Portions 18 of the grids 14-16 are inclined upwardly towards a scroll conveyer 32. In operation, spent abrasive falls through perforated plates 11-13 of a false floor and on to a main floor 8 along which the material is urged, towards the conveyer 32, by the eccentric motion of the grids 14-16. The false floor prevents large pieces of material damaging or clogging the grids. In a further embodiment (Figs. 5-7, not shown), a scroll conveyer (108) is provided between two sets of grids (106, 107) which are so driven as to feed the material towards the conveyer (108).
Patent GB-1272708-A (GB)
Title: Immersion molten metal sampler
Inventor: HANCE RICHARD JAMES
IPC: G01N1/12
Filed: 1970-08-17
Abstract: 1,272,708. Moulds; casting processes. LEEDS & NORTHRUP CO. 17 Aug., 1970 [18 Aug., 1969; 22 July, 1970], No. 39606/70. Heading B3F. [Also in Division C7] An expandable immersion sampling device comprises a tube 14; a mould of refractory material 11 supported on the immersion end of tube 14 having two symmetrical halves each including grooves and recesses which together form connected passages and cavities, including an entrance passage 11b, a flat sample cavity 1 la, one or more elongated sample cavities 11c, an air compression chamber 11e and vents to atmosphere 11f, there being a closure member 13 of deoxidizing material at the entrance of passage 11b and a tubular member 19 of deoxidizing material in the entrance passage 11b to kill the sample. The tube 14 may be of cardboard; the refractory material may be shell-moulded sand or clay or graphite, or metal parts covered with refractories. Flat metal discs may be placed in the cavity 11a to act as chill plates. Tubes 16 of high temperature glass or silica may be placed in the cavities 11c. An additional thin cardboard tube 15 may be provided to protect the mould. Recesses 11d mate with corresponding protrusions in the other mould half. One or two steel caps 12 may be cemented in place over the aluminium cap 13 to be melted by the metal. A short length of quartz tubing may be provided in the entrance passage. The mould halves are sealed together with cement and before this the walls of cavity lla may be covered with cement to seal the surface. In a modification the mould is largely of uniform diameter and does not protrude into the tube 14. It may have two steel caps.
Patent GB-1344156-A (GB)
Title: Copying camera for anamorphotic and orthomorphotic changes of scale
IPC: G02B13/10
Filed: 1971-08-25
Abstract: 1344156 Copying cameras; anamorphotic  lenses JOS SCHNEIDER & CO OPTISCHE WERKE 25 Aug 1971 [17 Oct 1970] 39865/71 Headings G2A and G2J A copying camera 1 for anamorphotic and orthomorphotic changes of scale, the camera including a rigidly mounted optical system 2 and fixed object and image planes 3, 4, the separations of which from each other and from the optical system are constant, is further provided with setting rings 10, 11 for adjusting prisms (III, IV) Figs. 4, 5 (not shown) of the optical system 2 which is contained in a lens unit 8 on which the rings 10, 11 are mounted. The prisms are provided between object-side and image-side spherical lens groups (I, II). Each of the prisms (III, IV) can be adjusted, Fig. 4 (not shown) to have their working planes crossed, thus allowing of orthomorphotic expansion or contraction up to a maximum of 7% in each working plane independently of one another, a locking device 19, 20, 21 being operative. The prisms may be synchronously operated, for simultaneous changes of scale in both planes by virtue of a second locking device 17, 18, 22 connecting the rings 10, 11 together, on disengagement of one or both locking devices, the prism (IV) may be rotated through 90 degrees so that the base areas of the prisms adjacent a diaphragm 23 lie on the same side of the optical axis, Fig. 5 (not shown.) If the rings 10, 11 are then locked together solely by the device 17, 18, 22, an anamorphotic expansion or compression of 14% is possible in the working plane of the prisms. The optical system 2 may be parallel to one or both of the object and image planes 3, 4, mirrors or prisms reflecting the light from the system 2 on to the appropriate plane(s).
Patent GB-903259-A (GB)
Title: A method of applying a contact to a semiconductor device
IPC: H01L21/24
Filed: 1958-12-10
Abstract: A method of making an ohmic contact to the semi-conductor material of an asymmetrically-conducting semi-conductor device comprises applying a first layer of metal or semi-conductor to form a barrier free contact, and on top of this a layer of a second metal to which a lead-in wire is subsequently soldered. The melting-points of the semi-conductor and metals are selected so that during the soldering operation no alloying occurs between the first and second layers, or between the first layer and the underlying semi-conductor.  In one embodiment a layer of aluminium is deposited on an N-type silicon body by evaporation, following by a layer of gold.  A lead-in wire is then soldered to the gold with a lead-tin solder.  The soldering operation is carried out at below 300 DEG  C. which is well below the aluminium - gold and aluminium - silicon eutectic temperature.
Patent GB-1484343-A (GB)
Title: Data transmission
IPC: H04L1/00
Filed: 1975-08-06
Abstract: 1484343 Data transmission; television BRITISH BROADCASTING CORP 6 Aug 1975 [13 Sept 1974] 40086/74 Headings H4P and H4F A ditital data transmission system, e.g. for additional information transmitted during the vertical blanking periods of television signals, comprises a transmitter arranged to transmit data bits serially in alternate bit intervals only and to transmit protection bits in the intervening bit intervals, and a receiver including means for clocking received bits into a shift register at half bit-rate with a phase such that the data bits are clocked into the register and the intervening protection bits are discarded. As shown, a data source 10 supplies bytes of four data bits 2, 4, 6, 8 in parallel and these are entered in a shift register 11. The bits are also applied to an encoding matrix 12 which generates corresponding Hamming code protection bits 1, 3, 5, 7 and these are entered in a second shift register 13. Shift pulses from a divide-by-two stage 16, fed from a bit-rate clock 15, are applied to the registers, whereby the bits are clocked out alternately from the two registers and combined through an OR gate 14 so that the output on line 17 consists of eight bits in the serial order denoted by the numerals 1 to 8. A single 8 bit shift register may replace the two registers 11, 13, and an embodiment with this modification is described with reference to Fig. la (not shown). A suitable receiver is described with reference to Fig. 3 (not shown).
Patent GB-952427-A (GB)
Title: Improvements in or relating to torsional vibration dampers
Inventor: RUMSEY ROLLIN DOUGLAS
IPC: F16F15/173
Filed: 1962-10-23
Abstract: 952,427. Torsional vibration dampers. HOUDAILLE INDUSTRIES Inc. Oct. 23, 1962, No. 40128/62. Heading F2S. A torsional vibration damper comprises a housing 10 consisting of a pair of complementary casing sections 14, 15 which have axiallyextending overlapping flanges 21, 25 and 27 and interengaging hubflanges 22, 29 bonded together, e.g. by cement such as a polyester or epoxy resin, to define a ring-shaped chamber 17, and a plate partition 19 which is secured by dowel pins 30 in rabbets 23, 24 in the flanges 21, 25 and 22 of the casing section 14 by the corresponding ends of the flanges 27, 29 of the casing section 15 so that the chamber 17 is divided into two sub-chambers each of which accommodates an inertia mass 18. The casing sections 14, 15, formed of die on plaster castings of lightweight material such as an alloy of zinc or magnesium and having their internal surfaces anodized e.g. by electrolytic oxidation, have inner radially-projecting hub-flanges 33, 34 which are cemented together and are adapted to be connected by bolts 43 to a rotary shaft e.g. of an I.C. engine. A viscous fluid is introduced into the housing through a filler opening 38 which is closable by a plug, and which registers with a reservoir groove 39 in the flange 22, a reservoir groove 41 also being formed in the flange 29. Rubber material, or springs may be used instead of the viscous fluid to couple the inertia masses 18 to the housing 10.