baber/WOPTO huggingface dataset:
Patent GB-1437565-A (GB)
Title: Wide dynamic range logarithmic amplifier arrangement
IPC: G06G7/24
Filed: 1974-02-26
Abstract: 1437565 Logarithmic amplifiers THOMSON CSF 26 Feb 1974 [27 Feb 1973] 8700/74 Heading G4G A logarithmic amplifier circuit having an input E and an output S comprises a differential amplifier G whose output is connected to S and has a transistor Q connected as shown between its output and its inverting input, a resistor R 1  connected from the non-inverting input of G to E and a resistor R 2  connecting the same input of G to earth, R 1  and R 2  being selected to compensate for voltage drops in transistor Q, and a limiting circuit consisting of a second differential amplifier G<SP>1</SP> and a second transistor Q<SP>1</SP> whose function is to bring input signals below a threshold level up to that level determined by resistor 6 connected at C to a source of potential opposite in sign to the input signals. When the input signal is below the threshold transistor Q<SP>1</SP> does not conduct and the only input to amplifier G is determined by resistor R 0  connected to a source of potential B of the same polarity as the input signals. A more detailed circuit of the same arrangement is given in Fig. 2 (not shown).
Patent GB-398885-A (GB)
Title: Protector for bung, tap, cork holes and the like
IPC: B65D39/08
Filed: 1932-03-24
Abstract: 398,885. Bushes for bung &c. holes. OLDHAM, E., Trent Cooperage, Burtonon-Trent. March 24, 1932, No. 8720. [Class 21.] A metal bush 1 of the kind which is fixed in the bung tap or cork hole of a cask, barrel, drum or like wood &c. vessel by expanding it into the wall is constructed with a cylindrical outer and tapering inner wall and with grooves 5, 6 and a projection 8. By means of an expanding tool comprising a series of rollers arranged to give a surface of revolution having a taper such as the bush is to have when ready for use the rib 8 is first expanded so that the part below the groove 5 is pressed into the wall, after which the bush is expanded from the bottom upwards to give the shape shown in Fig. 4. The bush is held from rotation by projections which are knocked into the wood when the bush is first inserted. The flange 2 may be countersunk or may be curved to the shape of the stave. In other forms the grooves have any other shape and may be axial or inclined or of any other disposition. Instead of expanding the whole body of the sleeve, local portions only may be expanded. The projection 7 may have a channel on its outside in which a sealing ring is placed or other sealing means may be used. The flange 2 may have a corrugated ring 11 for piercing the material of the container.
Patent GB-1144691-A (GB)
Title: Improvements in and relating to conveyor installations with ancillary storage devices
IPC: B65B35/52
Filed: 1966-03-01
Abstract: 1,144,691. Packaging machines; endless conveyers. SCHWEIZERISCHE INDUSTRIEGESELLSCHAFT. 1 March, 1966 ]2 March, 1965], No. 8831/66. Headings B8A and B8C. Apparatus for conveying flat articles 3, e.g. slabs of chocolate, soap &c., to packaging machines 5 (the inlet to only one being indicated) comprises a primary conveyer 1 from which the articles are transferred on to secondary conveyers 4 (only one shown) and an additional conveyer 4<SP>1</SP> to feed the articles which have been fed past the secondary conveyer to a magazine 10 in which the articles are arranged on trays 12 and stacked. The conveyer 1 comprises plates 2 which are tilted when the conveyer is above one of the conveyers 4 or 4<SP>1</SP> to transfer the articles on to a respective pair of shutters (7), Fig. 3 (not shown), which move outwards to release the articles which fall on to the conveyer. When one of the packaging machines 5 or one of the conveyer 4 ceases to operate, there may be an excess of articles on the conveyer 1 which are fed past the secondary conveyers whereupon a photoelectric sensing device 13 causes the excess articles to be transferred to the additional conveyer 4<SP>1</SP>. When the articles are adjacent the magazine 10 the conveyer 4<SP>1</SP> stops and the articles are pushed by a pusher (8), Fig. 3 (not shown, transversely on to a tray 12 which has been fed on to the vertically reciprocating base (17), Fig. 2 (not shown), of the magazine 10. The base (17) raises the trayed articles past spring biased hooks 2a, which are displaced outwards by the tray but pivot under it immediately it is past them. The base (17) is lowered to receive the next tray. Any succeeding trays (12<SP>1</SP>) push the previous trays (12<SP>11</SP>) (12<SP>111</SP>) upwards and support them. The stack 27 of trayed articles may be removed and placed on a table 28 for transfer to the conveyer 4 when required.
Patent GB-330659-A (GB)
Title: Improvements in processes for embossing designs or lettering on metal
IPC: B44B5/00
Filed: 1929-03-19
Abstract: 330,659. Gmach, L. T. March 19, 1029. Embossing; dic-rolling.-In embossing large sheets, pressure is applied through a resilient counter so that portions of the sheet covering different sections of a die are pressed at successive operations of a press or rollers. A bed B, Fig. 1, supports a die D and workpiece W. A flexible counter strip C is placed on the work piece and after each reciprocation of a press head A the strip is moved until the whole sheet is embossed. In a modification, Fig. 2 (not shown), the press head carries the counter and the die and workpiece are movable. In further modifications embossing rollers are used. A die-roll DR, Fig. 3, co-operates with a roll R to emboss a sheet W. A resilient counter strip C is of less width than the roll DR and is moved laterally after each section of the sheet is embossed. In Fig. 4 (not shown), one of the rollers carries a laterally movable narrow counter.
Patent GB-615622-A (GB)
Title: Improvements in and relating to detecting apparatus for electromagnetic radiation
IPC: G01J5/22
Filed: 1945-04-10
Abstract: 615,622. Radiation detectors. BENDIX AVIATION CORPORATION. April 10, 1945, No. 8920. Convention date, March 13, 1944. [Class 40 (iii)] Apparatus responsive to electromagnetic radiation comprises an electrical circuit including a conductor whose resistance varies with a change of its temperature, a substance responsive to radiant energy for causing a variation in the temperature of the conductor, and a source of current in the electrical circuit for maintaining the conductor at a temperature different from that of the energy-responsive substance. As shown, a substance 12, such as carbonized vegetable fibre in a fine fluff, which releases adsorbed gas when subjected to radiation, is located in a conical recess 11 in a housing 10 having a transparent window 13, for example, of rock salt. A coil 19 of thin wire supported adjacent an elongated slot 14 connecting the recess 11 with a chamber 15 formed by the member 10 and a closure member 16 forms one arm of a normally balanced Wheatstone bridge, Fig. 4, embodying resistances 24, 29, 30 and a battery 28 for maintaining the temperature of the coil 19 at a temperature above that of the surrounding air and substance 12. The junctions 25, 31 are connected through an amplifier 36 to an indicating device 38, but in a modification, Fig. 3 (not shown), are connected to a galvanometer. The coil 19 may be replaced by two coils adjacent the slot 14 provided the bridge circuit is normally balanced.
Patent GB-537361-A (GB)
Title: Improvements in and relating to mercury boiler feed apparatus
IPC: F22B3/02
Filed: 1940-05-20
Abstract: 537,361. Mercury turbines. BRITISH THOMSON-HOUSTON CO., Ltd. May 20, 1940, No. 8951. Convention date, May 20, 1939. [Class 110 (iii)] Mercury is fed to a vapour generator 10 by a pump 21, the casing of which has a sealing compartment 24. A seal is provided by a flanged collar 26 depending from the upper casing wall and entering a cup 25 rotating with the pump shaft. Liquid mercury is discharged from a condenser 15 to a sump 31 whence it overflows into an enlarged part 33 of a U-shaped sealing tube 30 leading to the pump. A float 55 in a pipe 54 indicates the level of the mercury in the pipe 30 and closes electric circuit contacts 56, 59, at extreme high and low levels. Mercury is supplied to the seal in compartment 24 by pipe 27 and cooler 26a and is drained into a U-shaped sealing pipe 46, 48 connected to the part 33. The part 33 is connected to surge tanks 35, 36 and these overflow to a tank 34.
Patent GB-116376-A (GB)
Title: Improvements in or relating to Respirators and the like.
Inventor: JACKSON FREDERICK EVANS
IPC: A62B18/04
Filed: 1917-06-22
Abstract: 116,376. Jackson, F. E. June 22, 1917. Respirators.-A gas or smoke helmet or respirator consists of a hood 1 tied round the neck of the wearer and provided with a transparent portion 2 and with a respirator or air-filtering tube 8 arranged across the front of the face-piece, open at its ends, and provided with a flexible rubber breathing tube or mouthpiece 11 extending through the material of the hood. The hood is formed preferably of single or double faced loop pile fabric to which the mica or other transparent sheet 2 is secured by means of V-shaped fibre strips 4 fastened by rivets. An extension 9, Fig. 4, from the lower fibre strip supports the filter tube 8 by means of rivets. The filtering material consists of a series of connected sponges 12 arranged at the ends of the tube 8 so as to leave a central space 13. According to the Provisional Specification the filter-tube and mouthpiece may be attached to any gas or smoke helmet.
Patent GB-934706-A (GB)
Title: Improvements in or relating to the production of steroid compounds
IPC: C07J75/00
Filed: 1960-03-14
Abstract: 11a ,17a -Dihydroxy- 16a -methyl-pregna-3,20-dione is obtained in a process in which 16a -methyl-17a -hydroxy-pregna-3,11,20-trione is diketalised to protect the 3- and 20-groups thereof, and the 11-keto group of the resulting 3,20-diketal is reduced to form the corresponding 3,20-diketal of 11a ,17a -dihydroxy16a -methyl-pregna-3,20-dione, which is deketalised by acid hydrolysis to form the desired compound.  The invention also comprises 3,20-bis-ethylenedioxy-16a -methyl-17a -hydroxy-pregnan-11-one, and its preparation by the use of glycol in the first step of the foregoing process.  Suitably the reduction step may be effected by the action of sodium in an alcohol, e.g. normal propanol, and the hydrolysis effected by heating in acetic acid.  Alternatively reduction may be effected by catalytic hydrogenation over platinum or nickel, or by the use of potassium or lithium in liquid ammonia, aluminium amalgam or diphenyl stannous hydride. Specifications 934,701, 934,703 and 934,705 are referred to.
Patent GB-701257-A (GB)
Title: Improvements in or relating to plasticisers for polymerised vinyl chloride and the like
Inventor: FOORD STANLEY GEORGE
IPC: C08L67/02
Filed: 1950-04-12
Abstract: Polyvinyl chloride or copolymers containing a major proportion of vinyl chloride and a minor proportion of vinyl acetate are plasticized by a linear polyester of 1, 3-butane diol and sebacic acid, having a molecular weight between 1,500 and 10,000.  A mixed polyester may be used, prepared by reacting sebacic acid with a mixture of 1, 3-butane diol and up to one unit of 1, 2 propylene glycol per butane diol unit.  Also, the plasticizer may comprise a mixture of 1, 3-butane diol sebacate and 1, 2-propylene glycol sebacate, containing up to one propylene glycol unit per butane diol unit.  The compositions containing up to 4 per cent. plasticizer are useful as protective coverings over the outer conductors of coaxial cables.  Specification 586,826, as accepted and also in the form as open to inspection under Sect. 91, is referred to.
Patent GB-1488622-A (GB)
Title: Document sorter processor
IPC: G06K17/00
Filed: 1975-03-05
Abstract: 1488622 Document sorter RECOGNITION EQUIPMENT Inc 5 March 1975 [6 March 1974] 9128/75 Heading G4H [Also in Division B6] A document sorter/processor comprises means feeding a series of documents along a path past an alphanumeric character reader 57, 62, and first and second ink jet printers 70, 74, the printer 70 recording coded data representing that read by the reader 57, 62, and the printer 74 recording updated alphanumeric information, delays 133, 134 being provided to delay actuation of the printers to allow information representing the passage of the document to be recorded. The information representing the passage of the document is derived from a positive item control number generator 125 responding to detection of documents at 24f. The alphanumeric character reader includes both OCR and MICR readers. A bar code reader 65 inhibits operation of the first printer 70 if codes are already recorded on the document. A second bar code reader 72 verifies the information recorded by printer 70. A further ink jet printer 73 may be provided. Each document may be photographed at 24. A succession of incorrectly coded documents counted at 162 stops the machine.
Patent GB-609926-A (GB)
Title: Improvements in or relating to internal-combustion turbines
IPC: F02C7/18
Filed: 1946-03-25
Abstract: 609,926. Gas turbine plant; centrifugal compressors. LOMBARD, A. A. March 25, 1946, No. 9202. [Classes 110 (i) and 110 (iii)] An internal - combustion turbine engine of the kind in which air under pressure is delivered by a compressor to one or more combustion chambers from which the products of combustion flow to a turbine which is coaxial with and connected to the compressor by a driving shaft having at least one bearing between the compressor impeller and turbine rotor, is provided with an intermediate casing extending between the compressor and turbine, which casing houses a support for a bearing of the driving shaft between the compressor and turbine and accommodates an auxiliary compressor mounted on the driving shaft, the auxiliary compressor being arranged to deliver cooling air under pressure into the interior of the intermediate casing to flow past the bearing. The gas turbine plant shown has a main shaft 1 mounted in a front bearing 2, a centre bearing 4 between the compressor impeller 3 and turbine rotor 6 and a rear bearing 5. Extending between the compressor and turbine is an intermediate casing 8 which carries a housing 9 for the centre bearing and a casing 20 for an auxiliary compressor 22 mounted on the shaft 1. The auxiliary compressor 22 discharges through an outlet 21 into the front portion 11 of the space enclosed by the intermediate casing 8. The cooling air passes from the front portion 11 of the space enclosed by the intermediate casing to the main portion 12 past the centre bearing and thence through the rear bearing housing 7 and then over the front face of the turbine rotor 6 to a space 24 within the fixed inner shroud 18 of the fixed guide vanes 15. The pressure in the space 24 reduces the leakage of hot gases through the clearance between the shrouds 18 and 19. A number of ducts 26 may be used to take cooling air from the space 24 to the outer fixed shroud 17. The air intake 23 to the auxiliary compressor 22 passes radially inwards to the eye of the impeller.
Patent GB-650592-A (GB)
Title: Improvements in or relating to radio aerial arrangements for use on aircraft
Inventor: BRAILSFORD JOSEPH DOUGLAS
IPC: H01Q1/28
Filed: 1948-04-01
Abstract: 650,592. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 1, 1948, No. 9257. [Class 40 (vii)] Relates to aircraft open aerials which are substantially in or sunk below the level of the aircraft skin. When such an aerial is coupled to a receiver through a long feeder the signal pick-up is reduced due to the capacity of the feeder and according to the present invention this effect is prevented by coupling the aerial to the feeder by a valve buffer stage. The invention is described as applied to a rotatable loop D.F. system in which the open aerial constitutes the sense aerial, the buffer stage also serving to decouple the two aerials. As shown, a flattened iron cored loop L rotatable by a motor (not shown) is mounted in a depression K formed in the conductive skin A of the aircraft which is covered by a removable insulating lid so as to maintain a smooth surface and the open aerial comprises a folded conductor O mounted by insulators S on the floor of the depression. One end of the conductor O is coupled to the grid of a buffer valve, Fig. 2 (not shown), mounted on the back of the floor' of the depression, Fig. 4 (not shown), and the valve anode is coupled by a toroidal matching transformer to a coaxial feeder. The other end of the open aerial is earthed and a 5 megohm resistor is connected across the two ends to disperse any static charges which may accumulate on the aerial. At the receiver end of the feeder the inner conductor is coupled to the receiver input through a capacitor which is adjusted so that the reactance presented to the receiver and hence the phasing of the input signal is the same as that produced by a conventional open aerial. If the reactance of the capacitor is high enough the buffer valve may be a cathode follower. Alternatively the open aerial may be carried by the lid or embedded in the insulating material thereof. If the depression is rectangular or square the open aerial may comprise a plurality of parallel spaced wires lying in a plane or curved surface and joined together by a cross-wire at one end or with a circular or annular depression it may comprise a central ring with a plurality of evely-spaced radial wires.
Patent GB-836908-A (GB)
Title: Improvements in and relating to the electro-deposition of metals
IPC: H01L21/288
Filed: 1957-03-21
Abstract: 836,908. Electrodeposition of metals. PHILCO CORPORATION. March 21, 1957 [March 21, 1956], No. 9298/57. Class 41. A method of plating base metal, such as aluminium, titanium, magnesium, germanium, silicon, hafnium, beryllium or zirconium comprises immersing the base metal in a molten salt bath comprising ions of metal having a melting point below that of the base metal, iodide ions and fluoride ions, the bath being at a temperature above the melting point of the lower-melting metal but below the melting point of the base metal, impressing a voltage between the base metal and another electrode with the base metal as anode, whereby the base metal is etched and oxide on the surface thereof is removed, and reversing the voltage whereby the lower-melting metal deposits thereon. Specified lower-melting metals are indium, tin, lead zinc cadmium, bismuth, thallium and alloys of two or more of these metals. The ions of the metal to be deposited may be provided by a salt of the metal. Chlorides, bromides, iodides, fluorides, borates and phosphates may be used. The fluoride ions may be provided in whole or in part by use of a fluoride of the lower-melting metal to be deposited, as in whole or in part by use of a fluoride having a cation other than the metal to be deposited. The iodide ions may be provided in whole or in part by use of an iodide of the lower-melting metal to be deposited or in whole or in part by use of an iodide having a cation other than the metal to be deposited. Ammonium or alkali metal fluorides or iodides may be used. The bath may consist wholly of fluorides and iodides of the metal to be deposited; or some or all of the metal to be deposited may be provided by other salts such as chlorides and bromides. There may be present in the bath, as diluent or solvent, another salt or other salts of ammonium or of a metal which, under the conditions of operation. will not become deposited. Specified diluent or solvent salts are alkali metal borates, chlorides and bromides, ammonium borate, ammonium chloride and zinc chloride. The other electrode in the bath may consist of carbon or a metal the same as that to be deposited, when it will be in molten form and a conducting wire, suitably insulated from the bath, such as a nickel wire in a glass sleeve, may be used to make contact with the pool of molten metal. Examples describe the electrodeposition of indium on aluminium, magnesium, titanium or germanium; tin on germanium or silica; and indiumcadmium alloy on aluminium. Aluminium when metal coated may then be soldered by normal methods.
Patent GB-651484-A (GB)
Title: Improvements in or relating to a machine for spreading candy
IPC: A23G3/20
Filed: 1948-04-02
Abstract: 651,484. Endless-belt conveyers. MARS, Inc. April 2, 1948, No. 9337. Convention date, April 7, 1947. [Class 78 (i)] [Also in Groups V and XIII] Apparatus for the production of coated bars of candy includes a horizontal conveyer 325, Fig. 6 on to which the sheeted candy descends and which is tensioned by hanging weights 350 and a chain 349 coupled through sprockets to slides 342 carrying the bearings for one of the conveyer drums. Vertical belts 377 near the edges of the horizontal conveyer 325 serve to confine the side edges of the candy and are tensioned similarly to the conveyer 325 by hanging weights 373. Guide rollers 384, 386, Fig. 16, are provided for the side belts.
Patent GB-858277-A (GB)
Title: Improvements in or relating to colour television transmitting systems
Inventor: BILLIN JAMES JOHN
IPC: H04N11/14
Filed: 1956-03-27
Abstract: 858,277. Television. ELECTRIC & MUSICAL INDUSTRIES Ltd. March 19, 1957 [March 27, 1956], No. 9457/56. Drawings to Specification. Class 40(3). In a colour television transmitting system for signals of the N.T.S.C. type in which the frequencies of the line and field synchronizing pulses and of the chrominance sub-carrier wave vary in response to variations in the frequency of electric supply mains the sub-carrier generator is controlled so that, in response to variations in the frequency of the supply mains, only discrete changes of frequency each of which results in a sub-carrier having a frequency which is an odd integral multiple of half line or half line and half field are possible. Known means may be employed to effect this control. Since, with such a system, the discrete changes of frequency may occur at any instant, intermittent phase reference signals (the "colour-bursts" of the N.T.S.C. system) are insufficient to ensure the production of rapid changes in the frequency of the local subcarrier generator in a co-operating receiver. To overcome this difficulty the system of the present invention utilizes, in addition to normal "colourburst" signals, a continuous reference carrier wave the frequency of which bears a predetermined relationship to the chrominance carrier wave. A receiver utilizing such a reference wave which comprises the sound carrier wave is described with reference to a "block" diagram (not shown). In this arrangement the sound and vision carriers are combined at I.F. frequency and by suitable division a wave of sub-carrier frequency is produced and employed as a conventional homodyning oscillation to recover the colour signals from the received chrominance sub-carrier. The "colour-burst" signals which are also transmitted being employed to control the phase of the (superheterodyne) receiver local oscillation. Since the frequency of the sound carrier wave is made to vary (at the transmitter) in accordance with the discrete changes in the frequency of the chrominance subcarrier wave constant synchronization of the homodyning oscillation results. Specifications 798,083, 798,084 and 849,622 are referred to.