baber/WOPTO huggingface dataset:
Patent GB-868551-A (GB)
Title: Improvements in or relating to matrices
Inventor: TOMLINSON TERENCE BERNARD
IPC: H03K17/00
Filed: 1957-10-09
Abstract: 868,551. Digital - to - analogue converters. COMPUTER DEVELOPMENTS Ltd. Oct. 2, 1958 [Oct. 9, 1957], No. 31553/57. Class 40 (1). [Also in Groups XXXVI and XL (c)] In a switching matrix in which the electrodes of the rows and columns are connected at their points of intersection by non-linear resistors the resistors have a current which varies by at least the third power of the applied voltage, so that within this range a desired ratio is obtained between the voltage developed across a load impedance connected to an input line through only one resistive element and that developed across a load connected to an input line through more than one resistive element. Figs. 1 and 2 show a 3 X 6 matrix in which a sheet of semi-conductor material 54 such as silicon carbide or cadmium sulphide activated with gallium or chlorine supported if necessary on a backing plate of ceramic material has deposited on it, for example by printing or spraying, metallic areas 11, 13, 15 connected to deposited row wires 1B, 2B, 4B, &c. and metallic areas and column electrodes 1A, 2A, &c. deposited on the reverse side. In this way conduction takes place through the thickness of the semi-conductor material. All possible intersection areas may be deposited on the back and a different pattern on the front so that any given system of interconnections may be made, the interconnecting wiring is kept small to minimize cross coupling and the areas spaced apart by a dimension large compared with the thickness of the material. It is demonstrated, Figs. 6 and 7, not shown, that if a given voltage is applied to a particular row then a related voltage will be obtained from the associated column and also by stray coupling between metallic areas a very much lower voltage at the interconnected columns at which potentials are not required. In a modification shown in Fig. 4, only one side of the semi-conducting material 51 is used the conductivity being across the surface of the material. Metallic areas 11, 13, &c. are deposited on one side of the sheet, the row electrodes 1B, 2B, 4B, &c., and the column electrodes 1a 3a, &c. being interconnected by means of interlaced spaced conducting fingers deposited as shown on one side of the sheet 51. After deposition of the two sets of areas an insulating layer such as varnish is deposited at least over the connecting wires and thereafter the second set of interlaced wires is deposited thereon the varnish having a non- linear characteristic the same as that of the sheet 51. The non-linear material could consist of a thin layer deposited in powder form in a suitable binder on an insulating backing to provide mechanical support or may be built on an insulating backing by successive applications of conductive paint, insulating varnish and non-linear resistive materials, in the required order and pattern.
Patent GB-251895-A (GB)
Title: Temperature exchanging device for mechanically conveying heat, chiefly to air in steam boiler furnaces
IPC: F23L15/02
Filed: 1925-12-15
Abstract: 251,895. Mercier, E. F. H. Dec. 15 1925. Heating liquids.-Heat is conveyed from one. point to another by means of an endless chain which receives heat at one point in its travel, and releases it at another point. An endless chain 1 passing over wheels 2, 3 consists of bottomless boxes 4 containing metal bars arranged in staggered formation. The upper side of the chain passes through a conduit 5 through which fluid passes, and the lower side through a conduit 6 for the fluid to be heated. The metal bars are arranged across the path of the fluid, and are spaced by discs threaded on them. Fig. 7 shows an arrangement for preventing leakage of gas. This comprises the wall 28 of the flue for heating fluid, and a parallel wall 27 at a distance of about three times the length of one of the boxes of the chain. The latter passes between a metal sheet 31 and a spring-pressed sheet 32 connected with the walls by yielding metal sheets 34, 35. Several different arrangements of conduits for the heating gas and gas to be heated are described. Each side of the chain may pass through one or both of the gas flues, the direction of the currents being preferably such as will make the gases to be heated leave the apparatus through those parts of the chain tnrough which the heating gases enter.
Patent GB-1452485-A (GB)
Title: Production of beer
IPC: C12C5/00
Filed: 1973-10-03
Abstract: 1452485 Strong lager TREBJESA 3 Oct 1973 31710/73 Heading C6E Strong lager beer is prepared using, throughout, hard water from wells in Niksic, Yugoslavia. The chemical characteristics of the water are given.
Patent GB-1240146-A (GB)
Title: Improvements in electron tubes
Inventor: KOSHIZUKA MICHIO
IPC: H01J21/02
Filed: 1968-07-03
Abstract: 1,240,146. Making cathodes. JAPAN RADIO CO. Ltd. 3 July, 1968, No. 31793/68. Heading B3A. [Also in Division H1] An electron tube includes a cathode which is formed with a series of concave depressions 1 which correspond to the apertures in a mesh grid electrode 2 spaced from the cathode, wherein each depression has a wholly curved bottom and has therein a coating 4 of thermionic material, and the parts 3 of the cathode intermediate the depressions are at least equal in width to the corresponding part of the grid. The cathode may be made by a hydroforming process from a thin nickel sheet which is located between a female mould, made by a photoengraving process, and an elastic film which forms the male mould and is deformed by oil pressure. The cathode, which may be in the form of a plate or rolled into a cylinder, may be used in pulse transmitting triodes or tetrodes.
Patent GB-406428-A (GB)
Title: Improvements in or relating to dye vats
IPC: D06B3/32
Filed: 1932-11-11
Abstract: A dye jig embodying variable-speed gear for automatically equalising the speed of the cloth to be treated, comprises, in combination with the usual batching rollers and bevel gearing and shafting for driving one or other of the rollers, a worm on each of the batching roller spindles and complementary worm wheels on a further spindle or shaft common to the two batching roller spindles, said further spindle or shaft being operably coupled to the controlling screw of the variable speed gear.  In operation, the power shaft z transmits its motion through the shaft u, the variable speed cone pulley gear, shaft s, pulleys y<5> and y<3>, to the cross shaft y<2>.  The shaft y<2> is coupled by means of a suitable <PICT:0406428/IV/1> <PICT:0406428/IV/2> <PICT:0406428/IV/3> clutch and bevel gears y, y<1>, to the batching roller b<1> (or b<2>) on which the cloth is being wound.  By means of the worm x and worm wheel v<1> (or v<2>), the motion of this batching roller is transmitted by way of the clutch v<3>, shaft v, and pulleys h<6> and h<4>, to the control screw h of the variable speed gear, the speed of the batching roller being thereby progressively reduced in order to compensate for its increasing diameter due to the winding on of the cloth.  To reverse the motion, the clutches on the respective cross shafts y<2> and v are moved into their opposite positions and the gear control screw h is returned to its original position.
Patent GB-1465131-A (GB)
Title: Spraying apparatus
IPC: B05B9/06
Filed: 1974-07-18
Abstract: 1465131 Controlling spraying apparatus on vehicles M C J LESTRADET 18 July 1974 [4 April 1974] 31899/74 Heading AID [Also in Division G3] In spraying apparatus for use on a vehicle eg to spray fertilizers or insecticides, the material to be sprayed passes from tank 1 via pump 3 and distribution chamber 7 to spray means 8, the pump being by-passed by a controllable valve 6. To vary the spray according to the vehicle speed, the valve is controlled by the difference between a signal dependent upon the pressure in chamber 7 and a reference signal derived from the sensed vehicle speed and the desired spray rate. As shown, computer 12 calculates the reference signal using the speed dependent signal from tachogenerator 13, connected to a non- driven vehicle wheel, a desired spray rate set at 14 and a signal from 15 that varies with the type of spray nozzle 28 used. The comparison at 10 between the reference signal and a pressure dependent signal from sensor 11 is used to control the valve 6 using servo motor 9. The computer 12 may be digital, analogue or hybrid.
Patent GB-1115595-A (GB)
Title: Reversible refrigeration systems
IPC: F25B13/00
Filed: 1966-07-15
Abstract: 1,115,595. Valves. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 15 July, 1966 [22 July, 1965], No. 31902/66. Heading F2V. [Also in Division F4] A reversible cycle heat pump comprises a four-way reversing valve 14 having a slidable valve element 14k, and a solenoid-actuated pilot valve assembly 15, the latter comprising upper and lower chambers containing valve elements 22 and 56a respectively and separated by a wall 28, a first duct 34 in wall 28 having one end connected by line 42 to one end of valve 14 and its other end forming a seat 38 for valve element 22, a second duct 36 having one end connected by line 44 to the other end of valve 14 and its other end forming a seat 40 for valve element 56a and a duct 46 which interconnects the upper and lower chambers and is connected to the compressor suction line 14e by line 48. Thus, when valve element 22 is moved upwardly line 42 is connected to the compressor suction, via duct 34, the upper chamber, duct 46 and line 48, and valve element 14k moves to the left. When valve element 56a moves downwardly line 44 is connected to the compressor suction, via duct 36, the lower chamber, duct 46 and line 48, and element 14k moves to the right. Valve elements 22 and 56a are associated for simultaneous movement by pins 72, 74 extending therebetween. Valve element 14k includes a portion 14t which is urged against one wall of the housing of valve 14 by springs 14r and has a recess therein (Fig. 5, not shown) for connecting the suction line 14e with either line 14c or line 14b depending on the position of the valve element. The size of the recess is such that no more than two of lines 14b, 14c and 14e can be interconnected at any one time.
Patent GB-1513062-A (GB)
Title: Process for manufacturing chlorothianthrenes
IPC: C07D339/08
Filed: 1976-07-30
Abstract: 1513062 2,3,7,8 - Tetrachlorothianthrene HOOKER CHEMICALS & PLASTICS CORP 30 July 1976 [1 Aug 1975] 31979/76 Heading C2C 2,3,7,8 - Tetrachlorothianthrene, optionally mixed with other chlorothianthrenes, is obtained by reacting thianthrene with a stoichiometric excess of Cl 2  in o-, m- or p-monochlorotoluene as solvent in the presence of a Lewis acid catalyst. Preferred catalysts are Sb 2 O 3 , SbCl 3 , FeS, Fe 2 O 3  or FeCl 3  and at least a 50% excess of Cl 2  is usually employed. The desired 2,3,7,8 - isomer is usually separated from other isomers by recrystallization from tetrahydrofuran.
Patent GB-1199104-A (GB)
Title: Improvements in or relating to Radio Frequency Connectors
Inventor: BOOTH RICHARD LEWIS
IPC: H01R13/646
Filed: 1968-07-04
Abstract: 1,199,104. Two part Couplings. M-O VALVE CO. Ltd. 1 July, 1969 [4 July, 1968], No. 32001/68. Heading H2E. A coaxial connector 1 has a generally tubular metal body 5 consisting of three sections of different internal diameters, the widest being at the end which receives a coaxial cable 2, and the narrowest being at the opposite end, wherein the outer conductor 4 of the cable 2 may be jammed in the narrowest section and makes electrical contact with the central section, the widest section being adapted to be filled with hardenable material 17. The aluminium outer conductor 4 and insulation 16 of the cable 2 are stripped back and the length of the outer conductor which will fit in the connector is roughened. A conductive paste consisting of a silver dust and hardenable resin is spread over the roughened area and the cable is forced into the gold-plated brass body 5. When the resin has hardened, resin is introduced into the widest section and hardened thereby anchoring the cable. The silicone rubber washer 15 is placed in position and the copper central conductor 3 filed into shape. Into the slot 8 is placed a resilient split ring 9 which retains the lock nut 11 in position while allowing rotation thereof. The female connector 14 has a body 13 of the same form as the male connector body 5 at the cable entry end but has an extension carrying an external thread 12 adjacent the narrowest section. The body 13 is secured to the cable in the same way as the body 5. A brass socket contact 24 mounted in a P.T.F.E. insert is soldered to the centre conductor 28. The two parts are so dimensioned that on screwing the lock nut 11 on to the thread 12, the central conductor 3 enters the contact 24 and the front face of the female connector abuts the silicone rubber washer 15 and the front face of the P.T.F.E. insert abuts the face of the body 5 of the male connector.
Patent GB-925583-A (GB)
Title: Di(arylthio) hydroxy alkanes and improvements in purification of phenols
IPC: C07C37/86
Filed: 1959-09-21
Abstract: A process for the purification of a phenol or phenol mixture contaminated with mercaptans difficulty separable therefrom by distillation comprises converting the mercaptans into thioethers by reaction in mercaptide form, with a compound containing a reactive halogen attached to an aliphatic carbon atom or by reaction, as such or in mercaptide form, with an oxirane compound, and separating the thioethers from the phenol or phenol mixture. The invention also comprises di(arylthio) hydroxyalkanes especially 1,3-di(methylphenylthio)- 2-hydroxy propanes. Monohalogen compounds, e.g. ethyl or butyl chloride may be used in the process though compounds containing a plurality of reactive halogen atoms are preferred, e.g. hexachlorocyclopentadiene, 1,2- propylene dichloride, 1,1,2-trichloroethane, benzene hexachloride and ethylene dichloride. Oxirane compounds specified for use in the process include alkylene oxides, e.g. propylene oxide and butylene oxides, epichloro- and epibromohydrins.  Other reactive groups may be present in the oxiranes.  Where the starting materials contain aryl disulphides they may be reduced, e.g. with zinc dust, to the corresponding mercaptans before treatment with the halides or oxiranes.  An inert gas, e.g. CO2 or N2 may be employed to prevent oxidation of the mercaptans during the reaction.  Examples are furnished.
Patent GB-263186-A (GB)
Title: Process for improving mineral oils and tar products
IPC: C10G27/14
Filed: 1926-12-17
Abstract: 263,186. Siemens & Halske Akt.-Ges. Dec. 19, 1925, [Convention date]. Mineral and tar oils, purifying.-Difficultly oxidizable mineral and tar oils are obtained by treatmg the crude oils, or oils which have been refined, as by treatment with sulphuric acid or by the Edeleanu process, with ozone in the presence of inorganic adsorbing substances, thus removing the resulting oxidation products, which consist largely of ozonides. The oils may be treated in counter current with ozone during their passage over bodies of large surface, such as pumice stone or kaolin, and the products of oxidation be adsorbed by silica gel, iron oxide, or by a basic substance, such as calcium, barium or magnesium oxide. Alternate layers of the basic substance and adsorbent, or of the basic substance, adsorbent and the body of large surface, may be used or a. mixture of the different substances may be employed. Fatty acids may be obtained from the oxidation products by treating them into steam. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the treatment with ozone alone, with removal by any means of the oxidation products. This subject-matter does not appear in the Specification as accepted.
Patent GB-1508006-A (GB)
Title: Unitary vacuum pump
IPC: F04D19/04
Filed: 1975-07-31
Abstract: 1508006 Molecular pumps AMERICAN OPTICAL CORP 31 July 1975 [1 Aug 1974] 32087/75 Heading F1C [Also in Division G3] A vacuum pump comprises, in a common housing 12 and on a common rotor-shaft 24, multi-stage axial-flow turbomolecular pump 32. a multi-stage centrifugal fore pump 34 and a multistage vortex diode 46 in series between the inlet 14 and the outlet 16. The shaft 24 is driven by a radially inward flow air turbine 20 having an inlet 18 and a central exhaust 22. The vacuum pump is duplicated to the left of plane I. The turbomolecular pump comprises impellers 28 formed with blades 52, Fig. 2b, and alternating with stators 30 each comprising blades 60, Fig. 2d, disposed in a retaining ring 62. A further molecular pump 40 may be provided, having pairs of stators 44, Fig. 3a, formed with spiral grooves 64 of decreasing depth, the first one of the pair having outwardly spiralling grooves 64 co-operating with radial grooves 68, Fig. 4a, on one side of an impeller disc 36 to form a centrifugal stage, and the second one of the pair having inwardly spiralling grooves 66 co-operating with the ungrooved back surface of the impeller disc to form a centripetal stage. The fore pump 34 comprises centrifugal stages each comprising an impeller disc 36 followed by a diffuser stator Figs. 4c, 4e, 38 which receives the discharge from the impeller grooves 68 at  arcuate collector slots 78 and conveys it inwardly through channels 82 to the eye 70 of the next impeller disc 36. The vortex diode 46 is a centrifugal pump provided to reduce leakage backflow and comprises two stages each having an impeller disc similar to impeller disc 36 and followed by a stator 50, Figs. 5a, 5c, having a recess 88 surrounding the impeller disc. Diffuser grooves 90 extend generally tangentically from the recess 88 to collector bores 92 extending to the rear side of the stator, where they each project at 96 into a collector basin 94 which discharges via a divergent channel 98 to an exhaust space 100.
Patent GB-988270-A (GB)
Title: Extendable scaffolding
IPC: E04G5/02
Filed: 1962-08-22
Abstract: 988,270. Scaffolding. R. K. SQUIRE. Aug. 22, 1962, No. 32208/62. Heading E1S. A scaffold comprises a pair of parallel base frames 12, 13 connected by braces 43-45 and into which are telescoped a pair of extension frames 16, 17 resting on pins 51 passing through selected holes 29 in the base frames, the extension frames being connected by braces 63-66 and 67, 68 to the pins 51. The frames 12, 13 are shown mounted on two further base frames 14, 15. The pins 51 carry angle members on which are pins for connection to the braces 63-66 and 67, 68. The extension frames comprise two vertical members 36, 37 connected at their upper ends by horizontal struts 38, 39. The base frames comprise two vertical members connected by upper and lower horizontal struts 23, 24 and diagonal struts 25, 26. Screw adjustable bases 18 and heads 19 are provided. The vertical members of the frames 12-15 are connected by double spigots.
Patent GB-1027350-A (GB)
Title: Improvements in or relating to vacuum gauges
Inventor: LLOYD OWEN
IPC: H01J41/06
Filed: 1963-08-14
Abstract: 1,027,350. lonization manometers. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 30, 1964 [Aug. 14, 1963], No. 32209/63. Heading H1D. [Also in Division G1] A vacuum gauge for investigating the pressure of a gas comprises a gun 4, 5 emitting an electron beam into an electrically conducting chamber 2, means for establishing a magnetic field 8 in the chamber, an electrostatic probe 9, and means 10 or 16 to determine the time interval between voltage transients of the probe. The means 10 is a dual trace oscilloscope. Closing the switch 7 produces a step 11 in the upper trace and a spike 12 in the lower trace representing a voltage transient of the ring probe 9 owing to a change in the total charge in the chamber 2 produced by the electron beam. A virtual cathode which is formed in the vicinity of the ring 9 disappears after a time depending on the rate of production of ions and hence on the gas pressure, and produces a second spike 13 in the lower trace. The time interval between the spikes 12 and 13 is inversely proportional to the gas pressure, and the gauge may be calibrated against a known pressure of a particular gas. Opening the switch 7 produces a step 14 in the upper trace and a spike 15 in the lower trace and prepares the gauge for a fresh measurement. The oscilloscope 10 may be replaced by a differentiating network connected to a time measuring device or by a frequency meter 16, in which case the switch 7 is kept closed. The meter 16 measures the frequency of an oscillatory signal produced in the ring 9 by cyclic potential relaxations (Fig. 2, not shown) occurring with the disappearance of the virtual cathode. The frequency is substantially proportional to the gas pressure, at least over a range of from about 5À10<SP>-7</SP> to 5À10<SP>-9</SP> torr.
Patent GB-786235-A (GB)
Title: Process for the germicidal treatment of liquids
IPC: A61L2/22
Filed: 1955-11-11
Abstract: Liquids are rendered free from microorganisms by atomizing ultrasonically, conducting away the mist so formed, and condensing it.  The initial intensity of ultrasonic treatment required for the atomization is dependent upon the specific gravity, viscosity and vapour pressure of the liquid and may be increased by subjecting the liquid to pressure above atmospheric.ALSO:Liquids are rendered free from microorganisms by atomizing ultrasonically, conducting away the mist so formed, and condensing it.  The initial intensity of ultrasonic treatment required for the atomization is dependent upon the specific gravity, viscosity and vapour pressure of the liquid and may be increased by subjecting the liquid to pressure above atmospheric.
Patent GB-1466288-A (GB)
Title: Discrimination circuit arrangements
IPC: G01N21/88
Filed: 1974-07-20
Abstract: 1466288 Amplitude discriminator circuits FERRANTI Ltd 17 July 1975 [20 July 1974] 32270/74 Heading H3T A discriminator circuit arrangement comprises: an input 19 for receiving D.C. pedestal signals on which disturbance signals may be superimposed; a filter 22 for removing the D.C. component of each pedestal except that adjacent the leading edge; means 24 ... 28 responsive to the leading edge to generate a replica signal having the same shape as the remaining D.C. signal; and means 23 responsive to the replica signal to eliminate the remaining D.C. components of each pedestal. An input pedestal 11, Fig. 1a, having superimposed disturbances 14, 15 is differentiated by filter 22 to produce the continuous-line signal of Fig. 3a at one input of comparator 23. The leading edge of thepedestal also triggers pulse generator 28 to produce an output pulse, the amplitude of which is adjusted to be the same as that of the pedestal, by [means of a control signal derived from sample and hold circuit 25. This pulse is then differentiated by filter 30 having the same time constant as filter 22 to produce the dotted-line replica signal of Fig. 3a, at the other input of comparator 23. This cancels the remaining D.C. component and results in an output Fig. 3b corresponding only to the disturbances 14, 15. In a first modification, Fig. 4 (not shown) a fixed amplitude pulse is produced by the pulse generator, and the output from the circuit 25 controls the gain of the amplifier 21 preceding filter 22. In modifications of the arrangements of Figs. 2, 4, the high pass filter 22 following amplifier 21 is replaced by a low pass filter connected to the input, and controlling the gain of the amplifier 21, Figs. 5, 6 (not shown).