baber/WOPTO huggingface dataset:
Patent GB-879795-A (GB)
Title: Improvements in or relating to television circuit arrangements
IPC: H04N5/18
Filed: 1957-12-12
Abstract: 879,795. Television. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 12, 1957 [Dec. 15, 1956], No. 38663/57. Class 40(3) Positive and negative gating pulses to operate a television bridge-type D.C. restorer incorporating a pair of oppositely-connected diodes 10, 11 are derived by differentiation in circuit 14, 15 of a first pulse (preferably the line synchronizing or flyback pulse, or a pulse derived therefrom) whereby the two gating pulses, and as a consequence the conductive periods of the respective diodes, are displaced in time. Providing the conductive periods both coincide with reference level intervals of equal value in the video signal, the circuit functions correctly to restore the D.C. level. It is stated that by deformation and/or shifting of the first pulse, the gating pulses, which correspond to the leading and trailing edge of the pulse, may be made to coincide with the front and back porch respectively with a sufficient degree of accuracy. In a modification, Fig. 2 (not shown), two stages of differentiation. are employed (the first comprising an inductor in the anode of the sync. separator stage and the second coupling capacitors 6, 7 and resistors 8 and 9 of the restorer circuit), whereby the two gating pulses are closely adjacent and both occur during the same porch, preferably the back porch.
Patent GB-1523389-A (GB)
Title: Method of making metal cored elastomeric rolls
IPC: B29C45/14
Filed: 1976-09-20
Abstract: 1523389 Moulding elastomeric rolls AMES RUBBER CORP 20 Sept 1976 [26 Jan 1976] 38920/76 Heading B5A A metal cored elastomeric roll (e.g. for electrostatic printing) having a protective sleeve 7 (e.g. of PTFE) is made by placing the metal core 11 in a mould 1, locating the protective sleeve 7 within the mould spaced from the mould walls, injecting air into the mould to expand the sleeve into contact with the mould walls, and injecting rubber between the core 11 and the sleeve 7 to form the roll. The air pressure is applied through an adapter 19 and passages in a plug 10, and is maintained during injection of silicone rubber 20 by a ram (not shown) through passages in a plug 6. The sleeve is initially held away from the mould walls by locating its ends in annular spaces formed between rings 4, 8 and the plugs 6, 10. The rubber is allowed to overflow into the air adapter 19 which is then removed, and end caps 21, 22 with bleed holes 23, 24 (Fig. 5, not shown) are attached while the mould is heated to cure the rubber.
Patent GB-1447981-A (GB)
Title: Apparatus for reproducing a microfilm or the like
IPC: H04N1/387
Filed: 1972-08-22
Abstract: 1447981 Microfiche copying GROOVE CONSULTING CO Ltd and K E GROVES 22 Nov 1973 [22 Aug 1972] 39007/72 Heading H4F Successive frames of an information bearing microfiche are scanned to produce corresponding video signals which are reproduced as optical images and synchronously recorded on corresponding frames of a second unexposed microfiche means being provided for interrupting the scanning of selected frames of the second microfiche and for recording on the latter visual information from a source other than the first microfiche. As shown in Fig. 2, an X, Y film transporter mechanism 10 positions successive frames (such as frames 2, Fig. 1) of a microfiche 12 for scanning by a flying-spot CRT 14 to produce video signals which are displayed as corresponding optical images on a display CRT 20 and optically projected via semi-silvered mirror 23 and lens 22 on to spatially corresponding frames on an unexposed microfiche 13 positioned by X, Y film transporter 11 operating synchronously with mechanism 10. A 5000 live scan resolution may be used. When it is required to change the information contained in a particular frame (such as frame 3, Fig. 1) the image of such frame on CRT 20 is obturated (or the corresponding video interrupted) and replaced by desired information such as by exposure to the optical image of a document &c. on a table 24. Alternatively, the new desired information may comprise a source of video signals, e.g. a computer. The output from multiplier 18 may be stored on a magnetic disc. For coloured microfiche a dichroic block and three photo multipliers 18 are provided for generating component colour signals and three CRTs 20 with different colour phosphors and a dichroic combining optics are provided for reproduction.
Patent GB-1129131-A (GB)
Title: Improvements in or relating to the aeration of liquids
Inventor: CLOUGH GEORGE FRANCIS GILBERT
IPC: C02F3/16
Filed: 1964-09-25
Abstract: 1,129,131. Aerating sewage. SIMON CARVES Ltd. 14 Sept., 1965 [25 Sept., 1964], No. 39130/64. Heading C1C. [Also in Division B1] A sewage treatment plant comprises a tank 12 and a plurality of aeration devices 14. Liquid to be treated flows continuously from the valve 202 (Fig. 2, not shown) through the tank 12 and out over outlet weirs (not shown).
Patent GB-1449418-A (GB)
Title: Switching mechanism eg for an alarm timepiece
IPC: G04C21/20
Filed: 1974-09-09
Abstract: 1449418 Time switches SEIKOSHA KK 9 Sept 1974 [11 Sept 1973] 39213/74 Heading H1N A time switch mechanism comprises a base plate 6, a setting wheel 1 made of non-conducting material, resiliently urged against the base plate 6 and provided with axially-extending projections 4, a contact plate 7, provided with a plurality of contacts 12 and secured to the setting wheel 1 such that the contacts 12 extend in the same direction as, but to a less extent than, the projections 4 and are spaced from them by a first predetermined angle; and an electrically conductive contact wheel 17 biased towards the setting wheel 1 by a coil spring 29, the contact wheel 17 being time driven and provided with first holes (27, Fig. 9, not shown) through which the said projections 4 may extend and second holes (28) through which the contacts 12 may extend, the first and second holes being spaced apart by a second predetermined angle which is larger than said first angle, whereby the contacts engage said contact wheel when the said projections enter the first holes, and disengage the contact wheel when the contacts subsequently enter the second holes. As shown, the contacts 12 have an overhanging shape such that when they enter the holes (28) they are spaced from wheel 17. The projections 4 have sloping faces (4a, Fig. 10, not shown) such that continued rotation of wheel 17 cams itself back to the position shown before contacts 12 abut the edges of holes (28). A resilient conductive plate 15, having a lead (16, Fig. 7, not shown), urges wheel 1 against insulating base plate 6 and forms a connection to the plate 7. The wheel 17 is driven synchronously with hour wheel 18 by pinions 23 and 24 on shaft 22.
Patent GB-883652-A (GB)
Title: Improvements in or relating to tobacco-manipulating machines
IPC: A24C5/18
Filed: 1957-12-18
Abstract: 883,652. Cigarette-making machines. USINES DECOUFLE. Dec. 18, 1957 [Jan. 11, 1957], No. 39345/57. Class 130. [Also in Groups XXXV and XXXVIII] To compensate for variations in the quantity per unit length of a tobacco stream of constant width on a travelling band 2, Fig. 3, the stream is trimmed by coacting rotary discs 12 to a crossseetional size determined by the position of an opposed section 13 of the band support bed vertically adjustable under the control of a device arranged to measure the quantity of tobacco in a part of the stream upstream or downstream of the discs 12. As described, the stream is formed by showering tobacco from a hopper on to the band 2, and the trimmed stream passes to a travelling paper web for wrapping therein to form a continuous cigarette rod, the trimmed-off tobacco being returned to the hopper. The bed section 13 is an elongated member with ramp portions fore and aft and is adjusted through two spaced rods 21 thereon joined by a bracket 20 having screwed engagement with a spindle 19 chain-driven from a servomotor 14 via a reduction gear 15. The measuring device 25, Fig. 4, supplies an electric current whose voltage and strength are determined by the quantity per unit length of the tobacco stream and which via an amplifier 26 and an integrator 27 causes to be available across the output terminals of an indicator 28 a positive or negative voltage according as the actual average stream quantity per unit length measured over about one second is higher or lower than a desired average stream quantity per unit length. During approximately onesecond intervals whilst a machine-driven cam 40 closes a switch 39, this voltage, if above a predetermined value, acts according to its sign and through a biased relay 35 to close contacts 36, 37 or 36, 38 and via switchgear 29 or 30 drive the motor 14 in one or other direction. Reference is made to the use of Beta radiation in connection with tobacco stream quantity per unit length determination. Specifications 662,949 and 854,736 are referred to.
Patent GB-1473400-A (GB)
Title: Method for diffusing impurities into nitride semiconductor crystals
IPC: H01L21/223
Filed: 1974-09-10
Abstract: 1473400 Semi-conductor devices RCA CORPORATION 10 Sept 1974 [24 Sept 1973] 39372/74 Heading H1K A dopant 18 is diffused into a surface layer 22 of a nitride body 16 by contacting the body 16 with the dopant vapour in an ammonia atmosphere while heating the body 16. The body 16 may be GaN, InN, A1N or their alloys with each other and the dopant 18 may be Li, Mg or Zn. If GaN is used it is heated to 900-1100 C. and the dopant 18 is heated to 400-700 C. if it is Zn, 500-900 C. if Mg and 600-1000 C. if Li. Surfaces of body 16 where diffusion is not desired may be protected by a layer of Si 3 N 4 . Apparatus 10 for carrying out the method consists of a diffusion furnace 12 heated by coils 14, and an ammonia supply 20.
Patent GB-984915-A (GB)
Title: Blow-moulding process and apparatus
Inventor: FORD ANDREW GEORGE
IPC: B29C48/09
Filed: 1962-10-18
Abstract: 984,915. Blow-moulding processes. IMPERIAL CHEMICAL INDUSTRIES Ltd. Sept. 16, 1963 [Oct. 18, 1962], No. 39477/62. Heading B5A. In a blow-moulding process for shaped articles, organic thermoplastic material is extruded from a helical die extrusion head 21 comprising a barrel 10 containing a tapering core member 11 having a helical groove 17 therein the depth of which decreases to zero as the core tapers, through a tube forming die, the tube thus formed being enclosed in a mould 28 and expanded by fluid pressure to conform to the shape of the mould. The use of the helical extrusion head prevents join lines in the finished article. Materials used in the process are e.g. polyolefine, polypropylene and poly-4-methyl-pentane-1. Specification 823,066 is referred to.
Patent GB-798791-A (GB)
Title: Apparatus for feeding articles such as caramels into a machine
IPC: B65G29/00
Filed: 1956-12-31
Abstract: 798,791. Orientating caramels. SOC. G. D. IN ACCOMANDITA SEMPLICE. Dec. 31, 1956 [Dec. 30, 1955; April 11, 1956], No. 39705/56. Class 78 (1). Caramels 29 are thrown into hopper 27 and fall into the round bottomless pockets 23 of rotary disc 21 which advances each caramel step by step along support 24 positioned beneath the disc and out of the hopper till the caramel slides between guides 32 so as to be orientated squarely to be wrapped at 33. Alternately, the orientation may be accomplished by inclining the support 24 (Fig. 4) so that the caramel settles to rest against stationary guide 44 as it advances. The circular pockets 23 may be flared. The guides 32 may pass through slots formed in the disc.
Patent GB-1218068-A (GB)
Title: Convergence system for a color picture tube
IPC: H01J31/20
Filed: 1968-08-20
Abstract: 1,218,068. Cathode-ray tube circuits. SONY CORP. 20 Aug., 1968 [24 Aug., 1967], No. 39753/68. Heading H4T: [Also in Division H1] In a colour television display tube of the type wherein three co-planar electron beams pass through a common lens system and then through convergence deflection plates which converge the beams on a colour grid or a shadow mask, spherical aberration is corrected in the plane of the beams by a dynamic convergence voltage applied to the convergence deflection plates and in the other plane by a suitable non- linear magnetic field in the respective scanning deflection system. Preferably the beams lie in a horizontal plane and the dynamic convergence voltage is derived from the horizontal scanning waveform. In this case the vertical scanning magnetic field should be barrel-shaped (Fig. 4, not shown) and this may be provided by the coil system shown in Fig. 3 wherein the vertical deflecting coils 35a and 35b are connected in series with coils 37a and 37b which are oppositely wound on the core 36; the horizontal deflecting coils 40 are also illustrated. The distortion of the magnetic field depends on the angular extent of the four coil portions and of the gaps between them. If the beams lie in a vertical plane the horizontal scanning magnetic field should be pin-cushion shaped (Fig. 7, not shown) produced by oppositely wound horizontal deflecting coils (Fig. 6, not shown). Fig. 5 shows a circuit for generating a convergence voltage; the static convergence component is derived through diode 30 from a transformer 23 fed from the line fly-back transformer 21, and the parabolic dynamic component is derived across capacitor 28 which is in series with inductor 27. A variable impedance 25 allows the convergence to be adjusted, and the E.H.T. voltage is derived from a rectifier 34.
Patent GB-1502379-A (GB)
Title: Seal assemblies
IPC: F16J9/06
Filed: 1975-09-30
Abstract: 1502379 Pistons A-T-O Inc 30 Sept 1975 [3 Feb 1975] 40010/75 Heading F2T A deformable expander ring 28, used with a non-deformable annular seal 24, 26 in a groove in a reciprocating member 12, has rounded clearance surfaces 56 and re-entrant corners adjacent the inner circumference, the seal having axially short inner surfaces providing clearance 58 between them and the groove base and has tapering sides 38 to the recess housing the expander ring. The seal may be in two parts and of nylon and the expander of neoprene.
Patent GB-1392550-A (GB)
Title: Count comparison system
IPC: G06M3/02
Filed: 1972-08-31
Abstract: 1392550 Sheet counters GLORY KOGYO KK 31 Aug 1972 [9 Sept 1971 (2)] 40376/72 Heading G4D In a sheet counter for counting out a predetermined number of sheets the number counted is held in a binary counter 7 and the predetermined number in a register 6 each digit of the two numbers being compared by an exclusive- OR gate U 1 -U n  comprising a pair of MOS transistors. When all digits are in equality a logical-0 appears at the input to an inverter I which delivers at 1 to AND-gate 3. The AND- gate 3 releases the 1 pulse to a control circuit (not shown), at the end of last count pulse, due to a delay circuit 2.
Patent GB-1025501-A (GB)
Title: Improvements in or relating to electrical resistance thermometers
IPC: G01K7/18
Filed: 1963-10-14
Abstract: 1,025,501. Temperature sensitive resistors. ROSEMOUNT ENGINEERING CO. Ltd., and B. ROGERS. Oct. 2, 1964 [Oct. 14, 1963], No. 40468/63. Heading H1K. [Also in Division G1] The helical resistance element 19 of, e.g. a platinum resistance thermometer, is contained in bores 12, 13, 14, 15 in a ceramic tube 11, and is adjusted to a required value by withdrawing a loop of the element through an opening 16, twisting the loop to short circuit it, and continuing the withdrawing and twisting until the required resistance is measured between connectors 22. A cement is used to close the opening 16. The element extends from one connector 22 down bore 14, to the closed end 18 of the tube, back along bore 12 to the opening 16, back to the closed end down bore 13 and then to the other connector 22 down bore 15. Fragments of glass may be placed in the bores and melted to form a lake which is allowed to set prior to insertion of the element, the whole being fired after insertion of the element to secure the element by means of the glass to the bore wall. Alternatively a slurry of ceramic and water is introduced into the bores after insertion of the element, the water evaporated, and the whole fired. Openings 17 enable a cement to be inserted to secure that portion of the element which is loosened by the withdrawing and twisting process. Glass beads seal the ends of the tube.
Patent GB-861923-A (GB)
Title: Improvements in or relating to electric arc furnaces
Inventor: RENTON ROBERT CHARLES
IPC: F27B3/06
Filed: 1958-12-16
Abstract: 861,923. Electric arc furnaces. CLINO FOUNDRY SUPPLIES Ltd. Dec. 10, 1959 [Dec. 16, 1958], No. 40581/58. Class 39 (3). [Also in Group XII] An electric arc furnace is rotatably mounted to turn about an axis adjacent to its centre of gravity on a carriage which is itself moveable in a horizontal direction; during tilting for pouring, the furnace is so constrained that the pouring lip travels in a vertical line, the resulting horizontal movement of the tilting axis being taken up by movement of the carriage. The pouring lip may also be moved upwardly to a charging position, the furnace turning about its centre without movement of the carriage. The furnace casing 2 has end plates 3 resting on the wheels 13 of the carriage 9, the wheels running on rails 8. Each wheel consists of a pair of discs on either side of a ball bearing. The front wheels are supported on a stub shaft to provide a gap permitting the movement of the pouring spout 6 to a downwardly projecting position below the carriage. The movement of the furnace during tilting is controlled by projections or guide rollers 24, 25 engaging in shaped arcuate tracks 26, 27, respectively which are carried by fixed side plates 28. The projections may be located adjacent the pour point and co-operate with vertical guide tracks. The furnace electrodes 34 are mounted in slide members 33 movable along horizontal track rods mounted in brackets on the carriage 9. The slide members engage screw-threaded shafts which are rotated by a chain and sprocket gearing 37, 38, 39 from a common shaft 40. A hand-wheel 41 is provided on one of the screw-threaded shafts to cause relative longitudinal movement of the electrodes. The slide members 33 are watercooled. The furnace crucible 1 is made in two halves, e.g. of pure recrystallised alumina, which when assembled in the furnace casing are located radially and axially by blocks of refractory material, e.g. sillimanite, mullite, or molochite. The two halves of the crucible meet in a diametral plane and are located by interengaging spigots and grooves. The crucible may have frusto-conical end portions abutting against each end of a two-part central cylindrical portion. The remaining space inside the casing is filled with discrete refractory material.
Patent GB-1273097-A (GB)
Title: Improvements in or relating to the manufacture of hollow bodies of semiconductor material
IPC: C30B29/60
Filed: 1970-08-24
Abstract: 1,273,097. Hollow bodies of semi-conductor material. SIEMENS A.G. 24 Aug., 1970 [26 Aug., 1969], No. 40616/70. Heading B5A. [Also in Divisions C1 and F2] A hollow body e.g. a tube of semi-conductor material open at least at one end, is prepared by depositing the semi-conductor material e.g. silicon, silicon carbide, germanium from a reaction gas on to a heated carrier body. The carrier body being composed of a material other than the semi-conductor material e.g. graphite and having a higher coefficient of thermal expansion than the semi-conductor material; raising the temperature of the carrier body during the deposition such that cracks appear in the layer of semi-conductor material until the cracks have been covered and thereafter removing the carrier body from the hollow body after cooling.
Patent GB-1401305-A (GB)
Title: Magnetic recording materials
IPC: G11B5/735
Filed: 1972-09-01
Abstract: 1401305 Coated magnetic recording material IMPERIAL CHEMICAL INDUSTRIES LTD 3 Aug 1973 [1 Sept 1972] 40672/72 Heading B2E A magnetic recording material comprises a molecularly oriented and heat set polyester film having a coating comprising vinyl chloride polymer particles on one surface and a magnetic coating on the other surface, the vinyl chloride polymer coating having a weight of 0.01 to 1.4 mgdm<SP>-2</SP>. The preferred film is polyethylene terephthalate which may be biaxially oriented. Biaxially oriented film may be further stretched in the transverse direction and then to a greater extent in the longitudinal direction. The coating may be applied prior to, during or after stretching, from aqueous dispersions followed by heating to dry the coating and fuse the particles to the film surface. The magnetic coating may be a ferromagnetic material applied by vacuum deposition, electroless plating, electrodeposition or as a dispersion in a resin binder e.g. polyurethane, cellulose acetate, cellulose nitrate. The recording material may be in the form of magnetic recording tape e.g. computer, audio or video tape.
Patent GB-1062288-A (GB)
Title: Improvements in or relating to apparatus for processing electric signals
Inventor: PALFREEMAN JOHN SIEGFRIED
IPC: H04B10/00
Filed: 1964-10-06
Abstract: 1,062,288. Delay lines. MULLARD Ltd. Sept. 14, 1965 [Oct. 6, 1964], No. 40713/64. Heading H3U. [Also in Division G1] Apparatus for the time reversal of discrete signal packets comprises two photoelastic delay lines, 2, 13. The input signal is applied to the line 2 by a piezoelectric transducer 3, the line being illuminated by parallel light. The moving light pattern produced by the stress pattern 4 in the delay line 2 is imaged half size on to the delay line 13. As soon as the whole packet has been fed into the delay line 2, an interrogation pulse is applied to delay line 13 which overtakes the moving light pattern and effectively samples it by making delay line 13 transparent point-bypoint so allowing sampled light to pass to a photomultiplier. If the light pattern is imaged on the delay line 13 more or less than half size, the reversed signal is stretched or compressed. The delay lines may be of the type in which the refractive index or bi-refringence is affected by stress.
Patent GB-1113057-A (GB)
Title: Impregnated compositions
IPC: C10M169/00
Filed: 1964-10-06
Abstract: An insulating composition comprises an insulating oil and at least 1 wt. per cent of a solvent refined Fischer Tropsch wax. The insulating oil may be dodecylbenzene or a mineral oil.  The composition may contain one or more polyolefins, petrolatum or a resin of low dielectric loss, e.g. colophony.ALSO:Cables or capacitors are impregnated with a composition comprising an insulating oil and at least 1 wt % of a solvent refined Fischer Tropoch wax.  The oil may be dodecylbenzene or a mineral oil.  The composition may contain one or more polyolefins, petrolatum or a resin of low dielectric loss e.g. colophony.
Patent GB-1010805-A (GB)
Title: Improvements in runners for centrifugal fans of the forward curved multiblade type
Inventor: FUJII NORIYOSHI
IPC: F04D29/30
Filed: 1961-11-14
Abstract: 1,010,805. Making turbine blades. SHINKO KOGYO KABUSHIKI KAISHA. Nov. 14, 1961, No. 40763/61. Drawings to Specification. Heading B3A. [Also in Division F1] The blades for a centrifugal fan (see Division F1) are made by extruding a beam of aluminium and cutting it into lengths. The ends of each blade length are provided with projections which are used for fixing the blades between a pair of parallel plates.