baber/WOPTO huggingface dataset:
Patent GB-1398152-A (GB)
Title: Circuitry for redicing the bandwidth of an information signal
IPC: H04B1/66
Filed: 1972-07-28
Abstract: 1398152 Bandwidth compression system; facsimile system FUJI XEROX CO Ltd 28 July 1972 [29 July 1971] 35529/72 Headings H4R and H4F The bandwidth of a facsimile signal is reduced for transmission by detecting successive intervals of the signal where each interval corresponds to the time between successive predetermined crossings of a reference level, very close to zero level, and inverting alternal signal intervals and passing the signals through a low pass filter. As described negative going crossings of a level close to zero level of the unidirectional facsimile signal Fig. 2a (not shown), causes generation of pulses in circuit 4, Fig. 1, to trigger a bi-stable circuit 5 from one state to the opposite state and produce gating signals e3 and e4 which gate alternate segments of the input signal between negative going zero crossings through gates 6 and 7. The output of gate 6 feeds direct to the adder 9 while the output of gate 7 is inverted before feeding to adder 9. The resulting signal, with alternate segments inverted, is fed to the transmission circuit 11 via a low pass filter 10. At the receiver, Fig. 3, positive going portions of the signal feed through a channel including amplifier 15 while negative going portions of the signal including amplifier 16 and inverter 17 to an adder 18 where the normal and inverted portions are added to restore, after low pass filter 19, the original signal.
Patent GB-1042548-A (GB)
Title: Improvements in or relating to circuit arrangements for the transmission of pulse trains
Inventor: BENTLETT THOMAS PAUL
IPC: H04M3/26
Filed: 1965-08-19
Abstract: 1,042,548. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Aug. 19, 1965, No. 35566/65. Heading H4K. A circuit arrangement included in a routine tester sends two successive trains of 11 loopdisconnect impulses with an intervening pause at a nominal rate of 10 impulses per second, the breaks of the first train being accurately timed at 67 ms. and the makes of the second train at 33 ms. This is achieved by the use of a pair of so-called Kipp relays having corresponding relaxation times.
Patent GB-1351848-A (GB)
Title: Receiver for use in an angular position determining system
IPC: G01S1/40
Filed: 1971-07-29
Abstract: 1351848 Radio navigation HAZELTINE CORP 29 July 1971 [28 Aug 1970] 35722/71 Heading H4D In the system of Specification 1,351,847 a second pulse train is radiated having the reverse phase distribution. The two received trains are analysed to provide the carrier frequencies and these are (i) differenced to provide a Doppler error-free position signal and (ii) summed to provide the Doppler signal. The transmitter array may be provided with a pulse generator at each end energized sequentially or a reflective termination may be situated at the far end of the array. A sync. pulse is transmitted between the two pulse trains to enable a switch in the receiver to direct the received pulses to the appropriate receiver channels which are the same as in Specification 1,351,847.
Patent GB-880254-A (GB)
Title: Photographic materials
IPC: G03C1/043
Filed: 1959-10-22
Abstract: Polyoxyalkylene compounds have at least one terminal hydroxy group which has been replaced by a halogen atom.  The chloro-and bromo-derivatives may be prepared by treating the polyoxyalkylene hydroxy compound with thionyl chloride or thionyl bromide.  The iodine compounds are made by refluxing the corresponding chlorine or bromine derivatives with sodium iodide in a solvent such as acetone. The polyoxyethylene hydroxy compound may be a reaction product of an alkylene oxide with an alcohol, carboxylic acid, phenol, amine, amide or dicyclohexylol-dialkylmethane.  Compounds specified are polyethylene glycols in which both terminal OH groups are replaced by chlorine, bromine or iodine atoms; reaction products of ethylene oxide and tridecyl alcohol, decyl alcohol, octadecyl alcohol, palmitic acid, stearic acid or p-butyl-phenol having a terminal OH group replaced by a chlorine, bromine or iodine atom; the di-substitution products of octylamine, octadecylamine or stearamide with polyoxyethylene chains in which the terminal OH group on each chain is replaced by a chlorine, bromine or iodine atom; a condensation product of ethylene oxide with dicyclohexylol-dimethyl-methane in which both terminal OH groups are replaced by chlorine, bromine or iodine atoms; and the bromo-, chloro- and iodo-derivatives of a product obtained by condensing 1 mol. of isododecyl-phenol with 10 mols. of glycide. Examples are given of the reaction of a polyoxyethylene lauryl ether (derived from 12 mols. of ethylene oxide) with thionyl chloride or thionyl bromide in pyridine, and the reaction of a condensation product of 18 mols. of ethylene oxide and 1 mol. of stearic acid with thionyl chloride and its conversion to the iodide by refluxing with sodium iodide in acetone.  U.S.A. Specifications 2,704,716, 2,716,062 and 2,728,666 are referred to.
Patent GB-177591-A (GB)
Title: Improvements in apparatus for facilitating the loading and unloading of ships
IPC: B63B27/10
Filed: 1920-12-24
Abstract: 177,591. Mathias, J. Dec. 24, 1920. No Patent granted (Sealing fee not paid). Vessels modified for loading and unloading; staiths and elevated structures.-Overhead runways E, F are provided in the holds so that cargo lowered through a hatchway such as C may he taken by an overhead trolly to any part of the hold. Preferably two fore-and-aft runways E, F are arranged at each side of the hold between the sides of the hatchway and of the ship, and these runways are connected by transverse portions G with junctions so that a trolly may pass from E to F. More than two longitudinal runways may be provided. The invention also comprises the combination of runways in the ships holds with overhead runways in the dock sheds commanding the ships hatches and provided with trollies for lifting and transporting as described in Specifications 113,300 and 114,664.
Patent GB-1161116-A (GB)
Title: Improvements in, or relating to, Fasteners.
Inventor: DOUGLAS JACK ERNEST
IPC: F16L3/08
Filed: 1965-08-23
Abstract: 1,161,116. Spring catches, stud and socket fastenings. ARTHUR SHAW & CO. Ltd. 23 Aug., 1966 [23 Aug., 1965], No. 36208/65. Headings E2A and E2B. A fastener comprises a base part 1 with inclined walls 4 and a cover part 2 with inclined edges 11 which parts slidably engage, the part 2 has two pockets 12 with inclined floors which provide two end walls 13 for engagement by the ends of the arms 9 of a blade spring secured to the base of the part 1 and extending through openings 5 in the part 1. The cover part has a hole 15 coinciding with each pocket for the insertion of a tool to depress an arm 9 to disengage an end wall 13 and so release the parts to allow relative sliding movement and their disengagement. The cover part may have a groove extending from each pocket to the end of the cover part. The parts may be cylindrical in shape or of any other shape. The arms 9 may extend through divergent slits in the base part or only one resilient arm may be used at right angles to the length of the parts. The resilient arms may engage with ribs extending from one part.
Patent GB-348012-A (GB)
Title: Improvements in single or multi-stage retort furnace
IPC: C22B5/10
Filed: 1929-11-26
Abstract: 348,012. Gas burners. MUSSO, A., 149, Church Street, and DEPPE, W. P., 151, Church Street, New York, U.S.A. Nov. 26, 1929, No. 36228. [Class 75 (i).] A gas burner for delivering a self-burning mixture to a surface combustion heating element from a chamber 105 comprises a twin nozzle 97 connected by a venturi tube 98 to a valve-box containing a hollow rotary valve 112.
Patent GB-1355092-A (GB)
Title: Rolling bearings with grooved raceways
IPC: F16C33/60
Filed: 1971-08-02
Abstract: 1355092 Bearings SKF KUGELLAGERFABRIKEN GmbH 2 Aug 1971 [26 Aug 1970] 36274/71 Heading F2A In a rolling bearing with grooved raceways, at least one race is formed in two parts 1, 2 divided along a radial plane passing through the raceway and spaced from the radial plane containing the limiting diameter of the raceway, the two parts being permanently joined together. The limiting diameter of the raceway is the maximum diameter in the case of the outer race, and the minimum diameter in the case of the inner race. The difference between the diameters of the raceway at the two said planes is #3% of the larger of said diameters. One of the mating surfaces 7, 8 may be cuneiform or semicircular in section. The parts 1, 2, are cast or extruded from plastics and are joined by ultrasonic welding. A shaft may constitute the inner race. Sealing elements integral with the outer race may be provided. The rolling elements may be balls or spherical rollers.
Patent GB-1416105-A (GB)
Title: Automatic conveyor system
IPC: B65G47/30
Filed: 1973-07-31
Abstract: 1416105 Endless conveyers AMERICAN CHAIN & CABLE CO Inc 31 July 1973 [8 Sept 1972] 36417/73 Heading B8A Packages of various lengths are fed on to trays 20 of an endless sorting conveyer 14, a loader conveyer 10 being intermittently stopped so that the centre of each package will be at the centre of its tray 20 regardless of the length of the package. Means for controlling the stopping of the loader conveyer 10 comprises a photorelay assembly 84 of which photo-sensors 90, 92 determine the minimum spacing between the packages on the conveyer 10. The conveyer 10 feeds a conveyer 16 of which the end adjacent the conveyer 10 is pivotally mounted on a vertical axis to permit the frame 52 of conveyer 16 to be oscillated, in a horizontal plane, by drive means 62. The oscillations are synchronized with the speed of the sorting conveyer 14 and, by aligning the delivery end of a spitter portion 18 of the conveyer 16 with the centre of each tray 20 when the centre of a package arrives at the delivery end of the conveyer portion 18, the conveyer 14 is able to be driven at an increased speed. The synchronizing of the conveyers 16, 18 and 14 is controlled by rotary switch means 98 driven by a wheel 32 of the conveyer 14, Fig. 2B. The packages are initially fed by a gravity conveyer 78 and a driven conveyer 70. The synchronizing arrangement may be applied to the control of two or more conveyers conveying on to one conveyer.
Patent GB-996315-A (GB)
Title: Process and copying material for the preparation of printing plates
IPC: G03F1/00
Filed: 1963-09-16
Abstract: 996, 315. Photo mechanical printing plates. KALLE A.G. Sept. 16, 1963 [Sept. 22, 1962], No. 36418/63. Headings G2C, G2H and G2M. [Also in Division H1] A method of making a printing plate comprises electrostatically charging a layer coated on a support and containing a photo-conductor and a naphthoquinone-1, 2-diazide-sulphonic acid ester, imagewise exposing the layer and developing the image with a powder toner, exposing the layer to light to decompose the diazo compound where it is unprotected by the powder image, and removing the decomposed diazo compound. The support may be a metal which may be etched after removing the diazo compound and, after etching, the image may be removed by solvent. The photoconductor may be an oxodiazole and may contain zinc oxide or cadmium sulphide when the support is not to be etched. The diazo compound may be 2, 3, 4- trihydroxy-benzo-phenone-naphoquinone-(1, 2)- diazide-(2)-(5)-sulphonic acid ester.
Patent GB-1338055-A (GB)
Title: Cooling of high-current semiconductor devices
IPC: H01L23/473
Filed: 1971-08-03
Abstract: 1338055 Semi-conductor devices GENERAL ELECTRIC CO 3 Aug 1971 [3 Aug 1970] 36451/71 Heading H1K [Also in Division F4] A semi-conductor device is cooled by means of an electromagnetic pump which pumps a liquid metal coolant around a fluid circuit. In the embodiment shown both sides of a Si wafer 12, e.g. constituting a diode rectifier or a thyristor, are cooled by a liquid metal pumped through passages 52, 68 and 70 in a Cu heat sink 30 by an electromagnetic pump 50 comprising an insulated channel 64, Fig. 4. through which the coolant flows and across which, in mutually perpendicular directions, the main electrical current through the device and a magnetic flux 92 flow. The magnetic flux 92 may be provided by a permanent magnet, but preferably a coil 80 forming a device output terminal 82 surrounds an iron core 46 to provide a magnetic flux 92 whose strength depends upon the current through the device. The use of the main device current to supply the power for the coolant pump provides excellent heat dissipation in the case of current overload. Suitable liquid metal coolants are a eutectic Na/K alloy, Hg or a mixture of Na, K and Cs. The coolant passageway 68 immediately adjacent the semi-conductor wafer 12 is preferably of greater depth at the centre of the wafer than at the periphery in order to equalize heat dissipation. The wafer 12 may have opposite faces coated with Ni, or may be mounted on a thin metal plate. Where both faces are cooled in the manner described coolant pressure is equalized on both faces by means of rods 40 operating through Belleville washers 47 on insulating pressure members 44. In a modified form only one face of the wafer 12 is cooled by means of an electromagnetic pump, the other face being cooled by a conventional Cu heat sink in contact, through a ductile layer of Ag or Cu, with the Au-Ni coated surface of a W substrate on which the semi-conductor wafer is mounted. Another modification allows the dimensions of the coolant passageway 68 to remain constant despite fluctuations in coolant pressure, the central core 61 of the heat sink 30 being, in this case, clamped relative to the wafer 12 while the outer cylinder 35 can move relatively to accommodate pressure fluctuations. In all embodiments the lateral edge of the wafer 12 is hermetically sealed in an annular space filled with argon or nitrogen.
Patent GB-1204521-A (GB)
Title: Improvements in conveyors
Inventor: JENKINS PETER JOHN
IPC: B66B23/10
Filed: 1967-08-09
Abstract: 1,204,521. Belt-type passenger conveyers. DUNLOP CO. Ltd. 6 Aug., 1968 [9 Aug., 1967]. No. 36488/67. Heading B8A. A joint device for a conveyer comprises a train of load-supporting panels 1 in which the trailing edge 8 of each panel is near to the leading edge 8<SP>1</SP> of the next successive panel, the panels being pivotally secured to one another so as to be relatively angularly movable in a common plane, at least one of each pair of successive panels having a longitudinal rib in the region of the junction of the panels, the joint device comprising toothed bridging means 17 extending between the confronting edges of successive panels, the teeth 21 of the bridging means being locatable at spaced-apart positions across the width of the conveyer in the grooves between the ribs. As shown, the pivotal connection between the panels is provided by a forked member 11 and an eye 10 at respective ends of a cable 9 embedded in each panel. The latter are made of rubber having two embedded layers 2, 3, of steel cords interspaced with a layer 4 of textile reinforcement. The bridging means between the panels comprises an H- shaped support 15 engaging the edges 8, 8<SP>1</SP> and toothed members 21, 21, secured to the support 15 by being clamped between plates 18, 19 by screws 20 threaded into the support. The members 21, 21, are of polyvinyl chloride or a polyurethane, and can flex as the conveyer negotiates curves about a vertical axis. The panels are driven by the action of an endless cable 14 which engages the walls of a groove 12 formed in each panel.
Patent GB-789037-A (GB)
Title: Method of and apparatus for the electrical resistance heating of semi-finished metallic articles
IPC: H05B3/00
Filed: 1955-12-20
Abstract: 789,037. Heating metals by passage of current. DEUTSCHE EDELSTAHLWERKE AKT.-GES. Dec. 20, 1955 [Dec. 27, 1954], No. 36524/55. Class 39(3) In heating metal workpieces, especially steel billets or tubes by-passing current therethrough for a subsequent hot-metal, working process, a multi-phase current is used, and each phase is fed to a different workpiece, and the workpieces are heated 'in stages and moved from supply by one phase to an adjacent station for heating by another phase, different voltages being used in different phases according to the resistances of the workpieces as affected by their temperatures, so that the phases of the supply mains are substantially uniformly loaded. Thus a three-phase transformer has three secondary windings 2R, 2S, 2T each with at least two tapping points 4, for supplying current at 50 cycles to three workpieces 3R, 3S, 3T, which are held at each station for 50 seconds, and are heater in the first station to 400‹C. at 20 volts, in the second station to 800‹C. at 25 volts and finally in the third station to 1200‹C. at 28 volts, so that the three phases are equally loaded. The workpieces may be mounted on a common carrier.
Patent GB-935620-A (GB)
Title: Improvements in or relating to "ground effect" vehicles
Inventor: HARDY DEREK JAMES
IPC: B60V1/16
Filed: 1960-10-25
Abstract: 935,620. Air cushion vehicles. WESTLAND AIRCRAFT Ltd. Jan. 15, 1962 [Oct. 25, 1960], No. 36528/60. Class 4. An air cushion vehicle 1 has air intakes 2 housing fans 32 supplying air through ducts 4 to peripheral-jet ducts formed longitudinally in sidewalls 7 and transversely at the ends of the vehicle. The front transverse duet shown in Fig. 3 is formed by outer and inner walls 8 and 9 and these are extended downwardly and inwardly by flexible members 10 and 11 respectively tied together to form a nozzle 12 for the transverse portion of the peripheral jet. The member 11 is attached to, or formed integrally with, one or a plurality of separate inflatable bags or compartments 13 tied to the base 6 of the vehicle by diaphragms 15 and inflated through conduits 14. Vent holes 16 and drain holes 17 are provided in the diaphragms. The transverse members are arranged to seal the gap at the front between the sidewalls, and both members may be of inflatable construction. The gap at the rear end of the sidewalls is sealed in a similar manner, and constructions are described, for a vehicle having two peripheral jets around the cushion, and in all embodiments the members, by their flexibility, are capable of being deflected upwards by waves or obstacles which the vehicle encounters. Constructions are described also for inflatable extensions to stabilising jet ducts.
Patent GB-784088-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C13/00
Filed: 1954-12-17
Abstract: 784,088. Aircraft controls. HOBSON, Ltd., H. M., WESTBURY, R., and SMITH, C. P. Dec. 12, 1955 [Dec. 17, 1954], No. 36587/54. Class 4. A power-operated aircraft control comprises at least three electric signalling systems operable by the pilot's control, the servo motor having at least three inputs each operable by an electro-mechanical transducer mechanism and means for feeding signals from all the signalling systems to each transducer mechanism. In Fig. 1, the pilot's control member 6 operates the wipers 16, 16A, 16B of potentiometers 7, 7A, 7B, the signals derived being amplified by amplifiers 8, 8A, 8B respectively. The servomotor comprises a piston 2 anchored to the aircraft structure and working in a cylinder block 3 pivoted to the control surface 1. The block is movable under the control of three valve members 4, 4A, 4B operated by transducers 5, 5A, 5B, and co-operating with inlet ports 14, 14A, 14B and exhaust ports 15, 15A, 15B. Potentiometers 9, 9A, 9B move with the block and thus wipers 17, 17A, 17B derive surface displacement signals fed to amplifiers 8, 8A, 8B, so that the net input to each amplifier is a displacement error signal. The output of each amplifier is fed to one of the three inputs of each transducer, e.g. windings 11, 12A and 13B are fed from amplifier 8. The potentiometers 7 and 9 and amplifier 8 are energized from one source, and the other potentiometers and amplifiers are similarly energized from two other sources. The amplifiers 8, 8A, 8B saturate at an input level corresponding to a displacement error which is small in relation to the total stroke of the cylinder block. In a modified version, each transducer mechanism comprises three separate transducers, one energized by each amplifier Specifications 777,273 and 780,759 are referred to.
Patent GB-759740-A (GB)
Title: Improvements relating to apparatus for heating solid materials in contact with gases
IPC: F23C99/00
Filed: 1954-12-17
Abstract: <PICT:0759740/III/1> The production of hydrogen by heating natural gas in the presence of a reduced nickel catalyst, or the thermal cracking of ammonia may be carried out in the vertical retort furnace shown in Fig. 1 and disclosed in the patent Specification (see Group XII).  The catalyst falls through a reaction tube 2 from a hopper 1 in countercurrent to the gas introduced at 10, the reaction tube being heated externally by the furnace 3 and internally by a radiant tube 9.  Effluent gases are removed through an offtake 11.
Patent GB-881862-A (GB)
Title: Process for the manufacture of sulphamyl-anilines
IPC: C07C311/37
Filed: 1959-10-29
Abstract: Sulphamoyl-anilines of the formula <FORM:0881862/IV (b)/1> wherein R1, R2 and R3 are hydrogen or a substituted or unsubstituted hydrocarbon radical, R4 and R5 are hydrogen, a substituted or unsubstituted hydrocarbon radical, an amino, nitro, etherified hydroxyl or sulphamoyl group or a halogen atom, e.g. 5-chloro-2 : 4-disulphamoyl aniline, are made by reacting the corresponding sulphohalide, e.g. 5-chloroaniline-2 : 4-di-sulphonyl chloride with ammonia or an amine R2R3NH (in the dry form or in an aqueous solution), in a liquid nitrated aromatic hydrocarbon such as nitrobenzene.  Specifications 820,444 and 826,924 are referred to.
Patent GB-919784-A (GB)
Title: Method and apparatus for finishing gears
IPC: B23F19/05
Filed: 1960-10-27
Abstract: 919,784. Gear-finishing. NATIONAL BROACH & MACHINE CO. Oct. 27, 1960 [Sept. 6, 1960], No. 36915/60. Class 83 (3). A machine for finishing an external or internal spur, bevel or hypoid gear comprises fluid-actuated means 38 for applying a substantially constant force urging the gear and tool together during an operation and for providing a substantially greater force for opposing separation of the gear and tool, with a check-valve 124 in the supply line to the fluid-actuated means to allow unrestricted flow in one direction and controlled flow in the other direction. The machine is generally identical with the machines described in Specifications 881,478 and 881,479, the check valve serving to replace the friction pad used in those machines. If the tool or gear 106, Fig. 5, is mounted on the table 22 and engages the lower teeth of an internal gear or tool 104, then the means 38 will apply a lower pressure than when an external spur gear is to be finished.
Patent GB-975640-A (GB)
Title: Converter for top blast refining with oxygen
IPC: C21C5/42
Filed: 1962-09-28
Abstract: 975,640. Metallurgical converters. BETEILIGUNGS - UND PATENTVERWALTUNGSGESELLSCHAFT. Sept. 28, 1962 [Sept. 29, 1961; June 2, 1962], No. 36942/62. Heading F4B. In a metallurgical converter having a circular bottom 12 the side 11 which is lowermost when the converter is tilted for slag removal is bellied so that the major part of the converter has an elliptical cross-section. The opposite side 15 of the converter has a tapoff hole 14 for the removal of the melt if the slag is to be retained. The internal height, of the converter is at least five times the normal depth of the bath and the ratio of the surface area of the bath in the slag removing position to the surface area of the bath in the blowing position is less than 1.9-0.0047t where t is the weight of the converter charge in metric tons.