baber/WOPTO huggingface dataset:
Patent GB-1431043-A (GB)
Title: Boosted voltage source in a deflection system
IPC: H04N3/16
Filed: 1972-04-05
Abstract: 1431043 Line time-base circuits RCA CORP 4 April 1973 [5 April 1972] 15576/72 Heading H3T [Also in Division H2] In line time-base and boosted switched mode voltage supply for a cathode-ray tube deflection circuit of the type in which a first switching device (not shown) periodically changes current in a first inductor 27a, the current is derived from a D.C. source 29 and includes a controlled rectifier 34 for rectifying a voltage induced in a second inductor 27b coupled to 27a and adding the rectified voltage to the source 29, the resulting voltage Vo<SP>1</SP> being stabilized so as to be independent of source voltage variation. The line deflection circuit of the type described in Specification 1,260,375 in which the current in line deflection coils is controlled by means of a pair of SCR's each having an inverse diode (Fig. 1, not shown). About the time of commutation of the two SCR's referred to above, a positive half cycle of alternating voltage is induced in winding 27b which is clipped by Zener diode 43 and allowed to charge capacitor 42 via resistor 39. The rate of charge is determined by Zener diode 47 in dependence on the value of the voltage Vo<SP>1</SP>. When capacitor 42 is sufficiently charged, transistor 35 turns on SCR34 which rectifies part of the positive half cycle from winding 27b and adds it to the voltage Vo<SP>1</SP> across capacitor 32. The higher the value of voltage Vo<SP>1</SP>, the shorter the period of conduction of SCR34 so that voltage Vo<SP>1</SP> is maintained substantially constant. Further energy is recovered from a winding 19c on the line output transformer which provides a pulse during the line flyback and by a form of voltage doubler operation utilizing capacitor 61 and diode 60 during the trace interval. Windings on the line output transformer (Fig. 1, not shown) provide voltages for supply of the EHT multiplier, video and cathode-ray tube filament circuits. Beam current regulation.-The waveform across winding 27a may be monitored by a further circuit 65 and fed to the junction of resistors 44 and 45. An increase in beam current will result in a lower peak voltage of the waveform across winding 27a and hence a lower potential at the junction of resistors 44 and 45, i.e. a similar effect to the reduction in voltage from rectifier 28. Resistors 44 and 64 are selected to compromise the two forms of regulation.
Patent GB-634370-A (GB)
Title: Improvements in calendars
IPC: G09D3/10
Filed: 1947-05-23
Abstract: 634,370. Calendars. MOSS, J. M. May 23, 1947, No. 15680/46. [Class 106 (iv)] A calendar comprises a container 1 having four apertures 2, 3, 4 and 5 for displaying respectively the date, month and year, one month at a time, bank holidays, a picture appropriate to the season and advertisements. The display matter is imprinted on a flexible band mounted on spindles 6, 7 manipulated by handles 8, 9..The spindles 6, 7 are journalled at the bottom in fixed bearings and at the top in holes 13 formed when the container is closed by rounded ends of slots 12 formed in flanges 10, 11. The flexible band may be of paper or fabric and the container of fibre, pasteboard, plain or leather covered, metal or moulded from a plastic material. Several years may be printed on one band, on one or both sides. Pawl-and-ratchet means may be used to prevent unwinding. The band may be translucent with a source of illumination provided.
Patent GB-291451-A (GB)
Title: Improvements in or relating to markers or signals for use in card indexes
IPC: B42F21/08
Filed: 1928-05-29
Abstract: 291,451. Cook Co., H. C., (Assignees of Carter, C. S., and Polkosnik. B. L.). June 4, 1927, [Convention date]. Clips, sheet-metal.-Index tabs for card indexes are formed from a strip of resilient material, preferably thin steel, which is bent upon itself at 15, Fig. 3, to form limbs 16, 17 which are adapted to grip the edge of an index card, the limb 16 being longer than the limb 17 and provided with an inward bend 19 and a bulge 20 into which a portion of the card is forced by a slight inward bend at the end 24 of the limb 17. The ends of the limbs are chamfered to enable adjacent index cards to slide over them without displacing the tab, and the sides are tapered in. wardly to form blunt tips 21, 25, Fig. 4, which increase the grip upon the card without mutila. tion. In a modification an aperture is provided instead of a bulge in the longer limb to cooperate with the inturned end of the other limb in gripping the card. Reference has been directed by the Comptroller to Specifications 11492/11 and 291,387.
Patent GB-352175-A (GB)
Title: Egg boiler
IPC: A47J29/00
Filed: 1930-05-22
Abstract: 352,175. Egg-cooking apparatus, BECKER, K. L., Villingen, Baden, Germany. May 22, 1930, No. 15752. [Class 28 (i).] In an electric eggcooker, the eggs are supported on a plate 5 and are cooked by steam generated from water by two electrodes 7, 8 immersed therein. The time of cooking is determined by the quantity oi water inserted intc graduated filling funnel 3. The electrode 8 is provided with a sleeve into which the pin 11 is screwed, the pin 11 being connected to a plug-in pin 12. The electrode 7 is spaced from the electrode 8 by an insulating member 9 and is similarly screwed on to a, pin 10 connected to the other plug-in pin 12. The pin 10 also serves for retaining the bottom plate 13. The electrode 7 is protected by a perforated porcelain member 6 which has hooked projections 17 which engage the electrode 7 in such manner that the electrode must be removed from the pin 10 before the member 6 can be detached.
Patent GB-515174-A (GB)
Title: Improvements in electric circuit arrangements for operating electric discharge devices
IPC: H05B41/232
Filed: 1938-05-26
Abstract: 515,174. Supply systems for discharge lamps. CLAUDE-GENERAL NEON LIGHTS, Ltd.. and LARK, G. T. KINGSLEY-. May 26, 1938, No. 15755. [Class 38 (iv)] In the supply of electric discharge apparatus from A.C. mains substantially at domestic voltages, more particularly electric discharge tubes and lamps requiring voltages considerably in excess of mains voltages, the physical dimensions of the necessary transformers or the length of shielded high tension cable required are reduced by providing a plurality of step-up transformers, e.g., auto-transformers 2, arranged with one end of the secondary of one connected to one end of the secondary of another by a discharge path comprising a single discharge device or a group of such devices 1 in series or in parallel, the other ends of the transformer secondaries being connected together and a capacitative impedance 3 connected in series with the primaries of the transformers. The transformers may be close or loose coupled; if close coupled they may be fed from a leaky reactance main transformer or an equivalent transformer-impedance combination, and if they are loose coupled they may be fed either directly from the mains or through a close or loose coupled main transformer. The inserted capacitative impedance may be constituted by a condenser, or, in some instances, by capacitatively wound chokes. If the step-up transformers are fed from a main transformer 4 the latter may have a capacity 5 connected directly across its secondary winding. In the example the transformer 4 is a leaky reactance transformer of unity ratio. The primary windings of the autotransformers 2 are connected in series and have their common points earthed. By placing the transformers inside shields at each of the tube ends the use of shielded cable may be avoided. The tubes may be of either the cold cathode or thermionic electrode type.
Patent GB-1044888-A (GB)
Title: Improved plate closure device for preventing flames spreading in tubing
IPC: F16K51/00
Filed: 1964-04-16
Abstract: 1,044,888. Valves. J. NEUMANN. April 16, 1964 [May 2. 1963], No. 15782/64. Heading F2V. A plate closure for preventing flame spreading in tubing is provided in a widened closure chamber 2 or 10 situated between two ends of tubes 5 and 1 or 1 and 50 which open into said chamber, the closure plate 4 or 9 being suspended on the peripheral wall of the chamber substantially perpendicular to the tubes axis by radial-resilient suspension means such as springs, the plate closing the passage from one tube to the other by the pressure wave which accompanies an explosion in the tubing. In Fig. 1, there are two such interconnected closure members which move to the position (shown dotted) as a result of a pressure wave in the direction 7, similar movement also being possible in the opposite direction 11. In a further embodiment there may be only one chamber, the plate being at least twice the diameter of the base of the tubes, and flow is permitted around the periphery of the plate from one tube to another until closure is effected. Helical dampers may be provided in one or both of the tubes to assist the stopping of any flame. The plate may be suspended from an adjustable spring anchored to a nut which can be screwed in or out to adjust the spring tension. Furthermore, two hollow reinforeng cones may be attached to the centre of the plate.
Patent GB-529908-A (GB)
Title: Improvements in or relating to shuttles for looms
IPC: D03J5/24
Filed: 1939-05-30
Abstract: 529,908. Loom shuttles. CASS, A., and ABRAHAMS, B. May 30, 1939, No. 15827. [Class 142 (iii)] A self-threading shuttle is fitted with a sheet-metal or like box, one end 11 of which has a thread opening of the shape shown in Fig 2 and the other end 17 a foot-shaped thread opening as shown in Fig. 3 with an inside guide wire 18 and outside guide wires 19, 20. Secured to the bottom of the box by a plate 22 are two cleaning and tension members 21, one pressed by a spring 27 and the other adjustable by a screw 28. The top 10 is slotted for the entry of the thread. The shuttle eye 29 is of a similar shape to the eye in the plate 11. The spring 35 of the peg 32 carries a head 37 which engages a spring buffer 41.
Patent GB-122606-A (GB)
Title: Improvements in and relating to Electric Welding Apparatus.
IPC: B23K35/30
Filed: 1918-09-30
Abstract: 122,606. British Thomson - Houston Co., (General Electric Co.). Sept. 30, 1918. Heating by electricity.-An electrode for use in electric welding, formed of soft iron, steel, or an iron alloy, &c., is thinly coated with a compound having a high electron emissivity when heated, such as a compound or salt containing calcium, barium, strontium, magnesium, sodium, potassium, lithium, &c., or a mixture of these. Preferably the electrode is dipped in a bath of milk of lime and allowed to dry. In addition to the alkaline material, small quantities of other substances may be added to the coating mixture; e.g. aluminium or silica suspended in silicate of potassium or sodium may be used.
Patent GB-1179032-A (GB)
Title: Improvements in Circuits for Detecting the Presence of Low Level Sinusoidal Electric Signals
IPC: H03D1/00
Filed: 1967-04-06
Abstract: 1,179,032. Sinusoidal signal detector circuits. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 6 April, 1967 [28 April, 1966], No. 15934/67. Heading H3Q. [Also in Division G1] In a circuit for detecting the presence of low level, e.g. 100 dB below a watt, sinusoidal signals S1 having an amplitude modulator 1 fed with the input S1, the output from the modulator 1 is fed via a detector 2 to a selective amplifier 3 and the output from the selective amplifier 3 is fed to a load at S2 and as the modulation signal S2 for the second input of the modulator 1. This modulation signal S2 constitutes in the absence of an input signal S1, the noise signal present at the detector. The amplitude of the output from the detector 2 is responsive to the input signal level and when an input signal S1 is received, e.g. from an aerial, the level of the output signal S2 increases and this may be detected by connecting the output S2 to a level indicator. The input signal may be a pure sine wave or modulated such as in amplitude, frequency or phase. Further amplifiers 5, 6 each having a bandwidth greater than that of the selective amplifier 3 may be connected as shown. Alternatively the amplifier 5 may be connected between the output of 3 and S2 and the modulating signal for the modulator 1 may then be taken either from the output S2 at the output of 5 or from the output of 3 intermediate 3 and 5. A limiter 4 may be connected between the amplifier 6 and the modulator 1 so as to deliver a constant amplitude signal to the amplitude modulator 1. In the absence of an input signal a sinusoidal signal obtained by the selective amplifier 3 from the noise signal is passed by the limiter to the modulator, the output signal level corresponding to no signal at the input. The selective amplifier may include an oscillatory circuit having a high Q factor or a quartz filter. The circuit may be constructed of solid state components and frequencies in the UHF and microwave frequencies may be detected.
Patent GB-1081216-A (GB)
Title: A photographic shutter with reciprocating shutter blades
IPC: G03B9/22
Filed: 1966-04-12
Abstract: 1,081,216. Photographic shutters. PRONTORWERK ALFRED GAUTHIER G.m.b.H. April 12, 1966 [April 17, 1965], No. 15936/66. Heading G2A. A photographic shutter having two blades (9), (10) Fig. 1 (not shown) which execute a reciprocating movement during exposure and which are driven by means of an actuating lever 7, is provided with a reflex stop movable into the path of the lever 7 by means of the exposure time setting member 16 for fast shutter speeds in order to speed up the closing of the shutter blades. To make an exposure, a two-arm lever 4 is released to rotate anti-clockwise (as seen) under the action of a spring 11. An arm 4c of the lever 4 rotates the lever 7 anti-clockwise until the arm 4c escapes from a flap 7b. For slow exposure times, the arm 4c rotates the lever 7 clockwise to close the shutter blades by engaging with a flap 7a, and the reflex stop is positioned so that a plane face (14a) thereof is opposite an edge (7d) of the lever (7) Fig. 3 (not shown). For fast exposure times, rotation of the member 16 carries a pin 17a on which the reflex stop is mounted into the position 18b of a control cam 18 on the member 16, thereby bringing a curved portion of the stop opposite the edge 7d. The edge 7d strikes this curved portion causing the lever 7 to rebound and rotate clockwise under the action of a spring 12 to close the shutter blades.
Patent GB-784002-A (GB)
Title: Apparatus for use in the transportation of freight
IPC: B60P3/40
Filed: 1955-06-03
Abstract: 784,002. Vehicles with transferable bodies. OBES, A. N. June 3, 1955 [June 4, 1954], No. 15961/55. Class 78 (4). A vehicle body 10 can be applied alternatively to two independent sets of highway wheels 11, 12, Fig. 3, or to independent rail bogies 17, 18, Fig. 8. The body is formed with spigots 13, 14 by which it pivots on its undercarriages and by which it may be locked to the under carriages. The body is transferred between the different undercarriages by any suitable hoisting means and may be supported, as shown in Fig. 3, by a rest bar 15 and a single set 11 of road wheels. As illustrated, one set, 12, of highway wheels is formed by a mechanical horse.
Patent GB-224929-A (GB)
Title: Improved means of curing hay and cereal crops in ricks
IPC: A01F25/08
Filed: 1923-06-21
Abstract: 224,929. Matthews, R. B. June 21, 1923. Crops, storing and preserving.-Stacked crops of grass, cereals, &c. are dried or cured under controlled bacterial action, by forcing or drawing air through closed shafts formed in the material by the use of removable formers. A channel 2 cut in the ground or otherwise arranged below the stack distributes the air to vertical shafts 8 formed in the stack from which it escapes to the surface or to auxiliary shafts 5. The shafts are formed by building the stack around polygonal or cylindrical formers that are raised as the building proceeds and are withdrawn when the eaves level is reached. A grating or lattice is placed over each shaft and the upper part of the stack completed. Valves 3, 4 operated manually or by ropes control the distribution of air. The stack mav be treated in sections as it is built, and, if the formers are closed at one end or both, the treatment with air may be commenced before the formers are withdrawn. Condensing curtains or surfaces which may be cooled by water-sprays &c., may be arranged in proximity to the outer surface of the stack or within the auxiliary shafts.
Patent GB-838976-A (GB)
Title: Improvements in compound sheet material
IPC: B32B15/08
Filed: 1957-05-21
Abstract: 838,976. Rigid laminates. FIRE-PROOF STEEL CO. Ltd., and GALT, G. S. May 14, 1958 [May 21, 1957], No. 16069/57. Class 140. A laminated building or like board comprises a base layer 1 of metal, such as galvanized steel, brass or copper, stabbed as at 2 to provide projecting tongues 3, a layer 4 of thermal insulating material such as asbestos cement, plywood or fibreboard or other compressed wood, and a surface layer 5 of polyester resin reinforced with mineral fibre material such as glass mat or fabric. A method of making the laminate comprises pressing a layer of unset asbestos cement on to a stabbed metal layer and allowing it to set, rolling a layer of polyester resin containing the reinforcing material on to a regenerated cellulose, polyvinyl chloride, polyvinyl alcohol, treated paper, or other carrier foil, superimposing the combined under layers. coated if desired with polyester resin, and curing the resin under pressure in a mould with or without heating, the carrier foil then being stripped off. For handling convenience a second foil which is stripped off before the final laminating step, may be applied to the resin layer. The carrier foil may be laid in the mould on a layer of rubber, cork sheet, exfoliated mica or granulated cork, which latter may impart a decorative finish to the resin surface. The resin may also be coloured, and may be treated to render it incombustible or selfextinguishing.
Patent GB-820281-A (GB)
Title: Method of producing metallic or non-metallic coatings
IPC: C23C16/02
Filed: 1956-05-24
Abstract: Before coating articles of high-melting metallic (i.e melting-point not less than 1050 DEG C.) or highly refractory non-metallic (i.e. capable of withstanding temperatures of at least 1050 DEG C. without melting or undergoing chemical change) materials with metals of the 3rd to 6th groups of the Periodic System such as titanium, tungsten and vanadium, or their hard carbides, nitrides, borides or silicides, or mixed crystals thereof, by reaction in the gaseous phase, the partial pressure of the gases contained in the basic material is reduced to below 1 mm. Hg. when measured with the basic material at a temperature of 600 DEG -1000 DEG C.  The partial pressure may be reduced by (1) heating the material in a vacuum, (2) heating the material in an inert gas or in hydrogen with or without an admixture of hydrocarbons, (3) heating the material in the presence of titanium, calcium or magnesium, (4) alloying titanium with the material, or (5) melting the material in a vacuum during its production.  The material may be steel or cast iron e.g. of the spheroidal graphite type, and the coating method may be that disclosed in Specification 785,236.
Patent GB-686078-A (GB)
Title: Improvements in or relating to the packing of articles or substances
IPC: B65B9/213
Filed: 1950-06-29
Abstract: 686,078. Pocketing-machines. LEVER BROS. & UNILEVER, Ltd. June 29, 1950 [July 9, 1949], No. 16240/50. Class 94(i) In a method of or machine for packing articles or substances, in which a tube of wrapping material is flattened and sealed transversely at spaced points and the article or substance is inserted between successive sealing operations, the ears formed above and below each transverse seam are squeezed and sealed to form laterallyextending, flat, triangular portions. Completed packages of the form shown in Fig. 8 may then be separated from the tube by cutting through the transverse seams 22. The triangular portions may be left projecting, folded flat against the sides of the package (see Fig. 9 not shown) or partially cut off. As shown in Figs. 1 and 2 a strip of heatsealable wrapping material is fed from a roll 1 and formed into a tube of rectangular cross-section by co-operating guides 2 and 3, the edges of the strip being sealed together by heated wheels 4, 5 to form a projecting seam 6. The tube then passes through a sleeve 7, against which it may be pressed by air under pressure introduced through the guide 2, whereby the seam 6 is folded flat. A transverse seam is then produced by jaws 8, 9 and the four ears thus formed flattened and sealed by jaws 10-13. The flattening of the tube may be assisted by movable guides 14, 15. The jaws 8, 9 may be arranged to leave a small unsealed portion, through which air can escape, which portion is subsequently sealed by auxiliary jaws 19, 20, Fig. 3 (not shown). Alternatively, the jaws 8, 9 may be closed in stages. The substance or article to be packed is then inserted through a tube 18, the tube is moved downwardly by grippers 16, 17 and the operations repeated to form the top closure of the filled package and the bottom closure of the succeeding package. If block-shaped articles are to be packed, the sealing wheels 4, 5 are located immediately above the transverse sealing jaws so that the seam 6 is left open as long as possible to allow the escape of air.
Patent GB-692857-A (GB)
Title: Improvements in or relating to fuel systems for internal combustion engines
Inventor: BASFORD KENNETH ARNOLD
IPC: F02D9/00
Filed: 1949-06-17
Abstract: 692,857. Spray carburetters. ROLLS-ROYCE, Ltd. June 14, 1950 [June 17, 1949], No. 16249/49. Class 7 (iii) [Also in Group XXIX] A fuel system comprises a main conduit 13 fed by a variable-capacity metering means 12, and an auxiliary conduit 50a through which fuel is added to or subtracted from the flow in the conduit 13, the flow in the auxiliary conduit being controlled by an orifice 52, adjusted by a valve 55 controlled by an engine operating variable, and by a device 54 which maintains the pressure drop across the orifice 52 as a function of the flow in the conduit 13. In Fig. 1 the conduit 50a bypasses fuel from the conduit 13 back to the inlet of a swash-plate metering pump 12. The valve 55 is controlled by a capsule 56 responsive to fuel temperature and the device 54 comprises a valve 59 actuated by a diaphragm 60 to maintain the pressure at 50b downstream of the orifice 52 equal to that at 13b downstream of a restriction 58 in the conduit 13, .i.e. the pressure drop across the orifice 52 equals that across the orifice 58. A back pressure valve 64 in the pipe 13c leading to the injection nozzle 11 in the intake manifold 10 is spring-loaded to maintain the pressure at 13b greater than that at the pump inlet 29 which is fed by a supply pump 28. The pump 12 is controlled by axial adjustment of the section 17 of the swash-plate driving shaft by means of levers 19, 20. The lever 19 is actuated by a fluid pressure servo-motor 31 having a control valve 38 actuated by a lever 39 connected to a capsule 42 responsive to intake manifold temperature, and the lever 20 is controlled by a piston 46 subject to boost pressure. In Fig. 2 the device 54 is replaced by a valve 71, the spring-loading of which is the same as that of the valve 64 whereby the pressure 50b is maintained equal to that at 13b. The valve 55 may be controlled by intake manifold temperature. In a modification in which the conduit 50a adds fuel to the conduit 13 a pressure reducing valve is provided in the pipe 29 to ensure a pressure at 50c greater than that at 50a. The pressure reducing valve is not necessary if the metering means is not a pump.