baber/WOPTO huggingface dataset:
Patent GB-538947-A (GB)
Title: Improvements in television signal-translating systems
IPC: H04N5/16
Filed: 1939-12-18
Abstract: 538,947. Television ; valve amplifying circuits. HAZELTINE CORPORATION. Dec. 18, 1939, Nos. 32445 and 32446. Convention dates, Jan. 14 and Jan. 27. [Classes 40 (iii) and 40 (v)] The contrast or gamma of .a television receiver is automatically varied in accordance with (1) the instantaneous value of the signal, e.g. by feeding the signals to two grids of the same valve, or (2) the general brightness of the subject or average intensity of the signal. Signals derived from different points of a potentiometer 22 following the video-frequency amplifier 16 are fed through amplifiers 23, 30 to the first and third grids of the valve 21, diodes 24, 31 deriving bias voltages equal to the peak value of the signal to supplement the fixed bias.voltages and representing the uni-directional background illumination components. The non- linear amplification of the signals in accordance with their instantaneous values constitutes an automatic gamma control. This control may be varied in accordance with the average intensity of the signals by applying to the grid of valve 30 a further biasing voltage derived by the rectifier 38 receiving part of the video signals.
Patent GB-491573-A (GB)
Title: Control diaphragm for electron rays, especially for television purposes
IPC: H01J29/48
Filed: 1936-11-27
Abstract: 491,573. Cathode ray tubes. HEIMANN, W. Nov. 27, 1936, No. 32506. Void. Convention date, Dec. 2, 1935. [Class 39 (i)] A diaphragm in front of the cathode of a cathode-ray tube serves both to control the beam current and to be reproduced on the fluorescent screen, and has an aperture of diameter 0À5 mm. and a thickness of 0À25 mm. Preferably, the ratio of the thickness to the aperture diameter is equal to or less than 0À5. In a modification, a thin diaphragm 0À1 mm. thick is placed over the aperture in the thick diaphragm B. Alternatively, a recess may be made in the thick diaphragm on the cathode side.
Patent GB-341969-A (GB)
Title: Improvements relating to the manufacture of mono azo dyestuffs
IPC: C09B29/15
Filed: 1929-10-25
Abstract: Monoazo dyes are made by coupling a diazo compound of an aromatic aminosulphonic acid with the condensated product of 2-naphthol-3-carboxylic acid and an aromatic sulphonylchloride of the formula <FORM:0341969/IV/1> In examples 4-toluidine-3-sulphonic acid and 2-chloro-5-toluidine-4-sulphonic acid are used as diazo components and p-toluenesulphonylchloride as the aromatic sulphonylchloride. The dyes are soluble in water and suitable for the manufacture of lakes.
Patent GB-410817-A (GB)
Title: Improvements relating to conveyors or elevators
IPC: B65H31/30
Filed: 1932-11-18
Abstract: 410,817. Conveyers for newspapers &c. SMITH, J. H. W., 177, Fleet Street, London. Nov. 18, 1932, No. 32649. [Class 78 (i).] Apparatus for conveying bundles of printed sheets, newspapers &c. without disturbing the alignment of the edges comprises a series of endless bands, chains &c. provided with prongs to engage the edges of the bundles, flexible cords, or wires &c. for retaining the bundles on the conveyer bands, and auxiliary belts or wires with reaches oblique to the reaches of the conveyer bands at points where the supporting positions of the bundles are changed. As shown in elevation, bundles 1 are delivered by parallel narrow bands 3 to a series of conveyers 2, 10, 14, 29, 34, comprising parallel narrow bands, having prongs 2<a>, 10<a>, 14<a>, 29<a>, 34a. The bundles are supported on parallel narrow bands 3 whilst being moved by the prongs 2<a> into the path of the prongs 10<a>. The conveyer 10 in co-operation with the oblique belt 12 turns the bundles through a right angle and brings them into the path of the vertical reach of the convever 14. Endless wires &c. 14<b> and 15 retain the bundles against the pronged conveyers 10 and 14 during this transfer, and endless belts or wires 19 retain the bundles in position where the conveyer 14 changes direction in passing over the pulley 18. The horizontal reach of the conveyer bands 14 may slide over longitudinal supporting bars, or the bundles may be moved along such bars by the prongs on the bands. The bundles may be passed over conical live rollers in order to change direction, the bundles being delivered to and from the rollers by plain bands. The bundles are delivered to the horizontal reach of a pronged conveyer 29. This conveyer comprises the vertical reach shown and co-operates with retaining wires 33 and delivers to the pronged conveyer 34 and horizontal conveyer bands 38. In a modification (Fig. 5 not shown), the bundles are delivered to the conveyer 29 by a pronged conveyer. Any of the driving pulleys may be provided with a ratchet device to permit overrunning. Idler rollers such as 16<a>, 17 are adjustable for tensioning, and the rollers 17 may be provided with cranked spindles to permit passage of the prongs. The retaining cords or wires co-operating with two or more of the bands may be continuous and they may consist of coiled wires. The bands may be twisted helically along a reach.
Patent GB-449441-A (GB)
Title: Improvements in or relating to folding ironing boards, tables, and the like
IPC: D06F81/02
Filed: 1935-11-26
Abstract: 449,441. Tables &c. VAUGHAN, E., Field House, Clent, near Stourbridge, Worcestershire. Nov. 26, 1935, No. 32715. [Class 52 (iii)] In a folding ironing-board, table, bench, &c. the leg parts 15, 17, which are stayed by links 26, 28, are connected by a pivot 18, and kept rigid in line by a spring latch pin 20. This being removed, the part 17 may be turned on the part 15, which is turned towards the part 1 and away from the legs 5, causing the links 26 to turn the legs 5 in the same direction as the legs 15. To enable the leg structures to fold flat, the parts are proportioned so that the sums of the distances between the pivots 6, 18 are equal whether taken at the pivot 27, the pivot 14, or the pivot 29. As shown, the parts are made of bent metal. Non-slip pads 31, 33 are fitted.
Patent GB-654865-A (GB)
Title: Improvements in apparatus for manufacture of carbon black
IPC: C09C1/50
Filed: 1948-12-17
Abstract: Apparatus for making carbon black comprises an elongated, rectangular cross-section, chamber not exceeding 1 1/2 feet in width with a burner at one end to produce a high-velocity, violently turbulent, stream of blast flame gases through the chamber, and a plurality of hydrocarbon gas injection tubes, 1/4 -\ba3/4 inch diameter, uniformly spaced, 1 1/2 -5 inches between centres, over the height of and substantially perpendicular or at least at some angle not less than 30 degrees to opposite sides of the chamber, near to and equidistant from the burner end thereof, each tube being opposite a corresponding tube.  The apparatus particularly described is the same as that described in Specification 654,864.  Reference has been directed by the Comptroller to Specification 654,340.
Patent GB-211964-A (GB)
Title: Method of and means for effecting or assisting vehicle propulsion
IPC: B62M1/18
Filed: 1922-11-30
Abstract: 211,964. Morf, J. R. H. Nov. 30, 1922. Body motion and weight of rider, mechanism for propelling by, combined with other driving mechanism.-In a velocipede in which the weight of the rider is supported by an auxiliary wheel adapted to press on the rim of the road wheel t a point slightly in front of or behind the point of contact with the ground to assist in the propulsion or retardation of the vehicle, the weight is applied to a lever at the lower end of which the auxiliary wheel is mounted, the lever being longitudinally slotted for the accommodation of Lhe axle of the main wheel. In a velocipede cornprising front and rear road wheels 6 and a central wheel 1, the saddle 7 is secured to the top of a lever 3 slotted to receive the wheel axle 2 and supported at its lower end on an auxiliary wheel 5, stops 21 limiting the backward or forward movements of the lever which assist or retard the motion of the velocipede.
Patent GB-1469076-A (GB)
Title: Bending press
IPC: B21D5/02
Filed: 1975-08-06
Abstract: 1469076 Press tools VEREINIGTE OSTERREICHISCHE EISEN - UND STAHLWERKE - ALPINE MONTAN AG 6 Aug 1975 [21 Oct 1974] 32883/75 Heading B3E A metal folding press comprises an upper punch 4 on a ram 2 and a lower die 3 on a platen 1, and a further tool 5 which can be connected to the upper punch to form a punch for use with the lower die or inserted into the lower die to form a die for use with the upper punch. In the figure, the tool 5 is shown retained on the upper punch by pairs of tie rods 6, which can be unlocked from tool 5 by being rotated through 90 degrees by couplings 9, 13 operated by pneumatic jacks through rods 15. The tie rods are then withdrawn by pneumatic actuators 18, 17. The tool 5 can be reconnected to the punch by the reverse sequence. The use of tool 5 may be replaceable.
Patent GB-1062449-A (GB)
Title: Derivatives of uracil and method of preparing the same
Inventor: PARTENHEIMER HERBERT
Filed: 1964-08-07
Abstract: New compounds of formula <FORM:1062449/C2/1> where R2 is alkyl (1-6 C) or b -hydroxyethyl, R2 is alkyl, cycloalkyl, aralkyl, alkenyl or aryl, and X is hydrogen or chlorine, are prepared by a corresponding 5-unsubstituted compound with formaldehyde and HOCH2CH2NHR1; mentioned is hydrogenation to displace a Cl atom X by H.
Patent GB-1183736-A (GB)
Title: Improvements in Electrical Generators.
IPC: H02J7/22
Filed: 1967-07-20
Abstract: 1,183,736. Automatic voltage control. ROBERT BOSCH G.m.b.H. July 20, 1967 [July 21, 1966], No. 33295/67. Heading G3R. A voltage regulator for an alternator 10 comprises: a relay coil 19 which controls, in response to variations in the output voltage of the alternator, a normally closed contact 20 connected in series with the aternator field winding 24; a free-wheeling diode 25 connected across the winding 24; and a capacitor 26 connected, optionally together with a resistor 27, in parallel with the contact 20. The arrangement is such that when contact 20 opens to break the field circuit, the capacitor 26 is charged in the first instance, and thus temporarily takes over the field current for the short time period required for the diode 25 to conduct and maintain the current flow in the usual manner. The alternator supplies the electrical load of a motor vehicle by way of a full-wave rectifier 13, the field winding 24 being supplied over a separate rectifier 15 and the circuit further including an ignition switch 18 and an indicator lamp 17.
Patent GB-913107-A (GB)
Title: Improvements in or relating to articles having adhesive backing
Inventor: LEWIS ARTHUR GWYNNE
IPC: F16B47/00
Filed: 1959-10-01
Abstract: 913,107. Mirrors. LIONITE SPECIALITIES Ltd. Sept. 15, 1960 [Oct. 1, 1959], No. 33313/59. Class 52 (4). [Also in Group XXV] A mirror, bracket or other article 1 has secured thereto a backing 2 of foam plastic the face of which remote from the article 1 has a coating 3 of pressure adhesive material normally covered by a protective layer 4 of paper.
Patent GB-193194-A (GB)
Title: Improvements in window fasteners
IPC: E05F11/00
Filed: 1921-12-12
Abstract: 193,194. Neate, F. W. Dec. 12, 1921. Hasp fastenings.-An arm 21, pivoted at 22 to the upper sash 4 of a window so as to swing in a vertical plane, engages teeth on an upstanding lug 28 on the lower sash and is held in engagement therewith by the action of a spring 30 mounted on the arm. An abutment 26 acts as a fulcrum for the arm to force the sashes to closed pisition, and a V-shaped projection 34 engages the front of the abutment, drawing the two sashes together.
Patent GB-1391945-A (GB)
Title: Method and apparatus for electrostratic printing
IPC: G03G15/22
Filed: 1972-07-18
Abstract: 1391945 Electrostatic printing ZELLWEGER USTER Ltd 18 July.1972 [16 Aug 1971] 33463/72 Heading G2H The substance of this Specification is to be found in Specification 1380005.but the claims are directed to a method and apparatus for subjecting the latent image to a corona discharge for polarity opposite that of the polarity of the charge of the image.
Patent GB-1124263-A (GB)
Title: A control arrangement for electrical energy converters
IPC: H02M7/00
Filed: 1965-08-05
Abstract: 1,124,263. Inverting. N. G. HINGORANI. 4 Nov., 1966 [5 Aug., 1965], No. 33477/65. Heading H2F. In order to ensure that the valves of an inverter are fired at the correct time despite variation in commutation voltage and output current, the commutating voltage is integrated from an instant which is the required extinction angle 8 after the commutating voltage passes through zero in a positive-negative direction and the integrator output is added to a second signal which is a function of the required minimum angle of advance. The resultant signal is fed to a level detector which produces a firing pulse when the resultant signal reaches zero, after which the integrator is clamped to zero ready for the next integration. Further signals may be added to the integrated signal to give larger angles of advance. Clamping of the integrator is effected by a monostable circuit which clamps the integrator to zero for a period 8 after the commutating voltage passes through zero.
Patent GB-1353099-A (GB)
Title: Process for the dyeing of synthetic fibre materials with quino phthalone dyestuffs from organic solvents
IPC: C09B25/00
Filed: 1971-07-16
Abstract: 1353099 Dyeing synthetic fibre materials BAYER AG 16 July 1971 [18 July 1970] 33482/71 Heading D1B Synthetic fibre materials e.g. polyesters, polyamides, polyurethanes, polyacrylonitrile, cellulose tri- and 2¢ acetates, are dyed by an exhaustion dyeing process in an organic waterimmiscible solvent preferably of BP 40-170C with a quinophthalone dye or mixture of dyes of formula I: in which R 1  is halogen, alkyl, alkoxy, nitro, amino, acylamino, alkylamino, carboxylic ester, or aryl radical, R 2  is halogen, alkyl, alkoxy, nitro, or acylamino or two adjacent substituents R 2  together with the carbon atoms to which they are attached form an aromatic ring n and m are independantly integers from 0 to 4. Up to 1% by weight of water referred to the weight of the organic solvent may be employed, preferred solvents being tri- and tetra-chloroethylene, 1, 1, 1-trichloroethane, and 1, 1, 1-trichloropropane, which may be used alone or as mixtures.
Patent GB-631579-A (GB)
Title: Automatic self-feed rounding or turning machines
IPC: B27C7/00
Filed: 1947-12-19
Abstract: 631,579. Lathes. LIPERT, S. Dec. 19, 1947, No. 33589. [Class 83 (iii)] [Also in Group XXIV] A machine for turning rods of rigid material, e.g. timber or metal, comprises a hollow mandrel headstock 2 carrying a hollow rotary cutter head 5, and two pairs of feed-wheels 14, 15 and 16, 17, the wheels of each pair each being carried by a rockable lever 21, or 22, and the levers 21, 22 being connected by toggle links 30, 31 to a spring-pressed axially-slidable rod 33 which is operable by a pivoted hand lever 38 to separate the feed-wheels when desired. The work is led.,to the feed-wheels 14, 15 by means of a guide channel 50 which is adjustable both vertically and laterally, and is fed from the cutter head to the take-off feed-wheels by means of a flared guide tube projecting into the headstock mandrel. The mandrel and both pairs of feed-wheels are driven from a common driving source, e.g. an electric motor or a countershaft. The feed-wheels are grooved and the take-off feed-wheels lined with resilient tyres. The base of the machine is provided with a ramp 11 to take away cuttings.
Patent GB-1399719-A (GB)
Title: Cable coupling
Inventor: CUNNINGHAM F V
IPC: H02G15/10
Filed: 1972-07-18
Abstract: 1399719 Cable joints JOSLYN MFG & SUPPLY CO 18 July 1972 [19 July 1971] 33603/72 Heading H2E A high voltage cable joint comprises an enclosure 32 formed by the sleeve 33 and a stainless steel casing 34 and elastomeric sleeves 25 urged apart, by an assembly 42 comprising springs 50, to form seals and air-free interfaces with the cables 11, 12 and with the housing 32, the sleeves being retained by collars 20 comprising fingers which bite into but do not completely penetrate the outer sheaths 17. The cables comprise insulation 15, having conductive coatings on both surfaces, and copper tape 16 which is protected from unravelling by securing tape 18. Connection from the tape 16 to the outer casing 32 and to earthing terminals 40 is made through rings 26, incorporated in the sleeves 25, and massive metal members 38 which also dissipate heat from the rings 26. The cable cores are connected by a crimping sleeve 30. To eliminate stressed air spaces and so prevent corona discharge all the voltage stress is concentrated in an insulating epoxy sleeve 33 by coating the inner and outer surfaces of the sleeve 33 with conductive epoxy layers 36, 35 and connecting the layers 36, 35 to the cable cores and outer conductors 16 respectively. The inner conductive layer 36 and the spring assembly 42 are connected to the sleeve 30 by a wad of copper mesh 54. Another embodiment (Figs. 10-12, not shown) is similar but is applied to cables comprising outer conductors formed by helically wound wires (67). At the ends of the joint the wires (67) are retained by single wires (67a) wrapped around the cables. The wires (67) of the two cables are connected together by a crimping sleeve (80). In the making of the joint (Figs. 14-17, not shown, and Fig. 13) the housing 32 and one elastomeric sleeve 25 are forced over one cable 11 by a jack assembly 90 comprising a base 91, a support 95, a brace 96, a lever 92 and a pressure member 97. The other elastomeric filler 25 is then similarly formed over the other cable 12 (Fig. 14, not shown). Then the sleeve 30 and the biasing assembly 42 are fitted. Finally the jack 90 is used to force the housing 32 to its final central position (Fig. 15, not shown) and the ends 55 (Fig. 1) of the housing 32 are peened over the collars 20.
Patent GB-1496599-A (GB)
Title: Variable emission strip width semiconductor laser
IPC: H01S5/062
Filed: 1975-08-13
Abstract: 1496599 Electroluminescence NORTHERN TELECOM Ltd 13 Aug 1975 [17 Sept 1974] 33750/75 Heading C4S [Also in Division H1] In a stripe electrode semi-conductor heterostructure laser, the width of the ribbon output beam is controlled by applying a potential to one or more auxiliary electrodes. With a suitably limited current between the main electrodes of the semiconductor, such control enables the laser to switch from a non-lasing to a lasing condition as the width of the output beam is reduced, and vice versa. The laser consists basically of confining layers 21 and 23 of AlGaAs, Fig. 3, a GaAs laser active layer 22, and a GaAs capping layer 24, the layers being epitaxially grown on a substrate layer 20. The layers 20, 21 and layers 22, 23, 24 are of opposite conductivity type. Dopants may be Al, Te, Ge or Sn. In Fig. 3 a zinc diffusion zone 27 is provided, together with main and auxiliary electrodes 28a, 28b which are formed by evaporating Au/Ge, followed by Au, in windows 26 in an oxide layer 25. A main electrode 29 is similarly formed on the substrate. A modified semi-conductor construction providing a Schottky barrier type device is shown in Fig. 4, the constructional process involving the selective slight etching of regions of layer 24 to remove skin diffusion, followed by the deposition of layer 32 which is then stripe etched to provide main and auxiliary electrodes 32a, 32b. A metal insulator semi-conductor is also described, Fig. 5, in which layer 24 is selectively diffused to form region 35, followed by the selective deposition of an oxide layer 36 in areas 37. Main and auxiliary contacts 38 and 39 are then deposited on the regions 35 and 37, respectively. The laser may function as a modulator or as on-off switch with a suitability for a pulse modulation system.
Patent GB-1402346-A (GB)
Title: Synchronising switch circuits for flash synchronised photography
IPC: H05B41/32
Filed: 1972-07-19
Abstract: 1402346 Flash synchronizing circuits ASAHI KOGAKU KOGYO K K 19 July 1972 [20 July 19711 33757/72 Heading G2A A flash synchronizing circuit has a flash-bulb terminal 2, a flash tube terminal I, a flash-bulb and a flash tube synchronizing switches 4, 3 which are closed sequentially in that order upon shutter operation, a voltage regulator 5 and a shortcircuit part 6 connected in parallel with the flashbulb synchronizing switch. With either a flash tube or a flash-bulb synchro-cord connected in their correct terminals, normal flash operation is achieved. With a flash-bulb synchro-cord connected in the flash tube terminal, voltage regulator 5, e.g. of trigger value 25 volts, prevents the flow of a trigger current upon closing of switch 3, the flashbulb device being powered by 22À5 volts. With a flash tube synchro-cord connected in the flash-bulb terminal, the short-circuit part 6, e.g. of 100K# short-circuits the tube trigger circuit so that a tube trigger current is not produced upon closure of switch 4. In a modification, a second voltage regulator is connected in series with resistor 6 to prevent battery drain. Only one terminal may be provided connected to a changeover switch Fig. 3 (not shown). An indicator powered by the current generated during incorrect operation may be provided.
Patent GB-828087-A (GB)
Title: Improvements in or relating to ferroelectric devices
IPC: H01G7/02
Filed: 1956-11-06
Abstract: 828,087. Piezo-electric elements. WESTERN ELECTRIC CO. Inc. Nov. 6, 1956 [Nov. 8, 1955], No. 33849/56. Class 40 (8). [Also in Groups II and XXXVI] A ferroelectric device comprises a thin layer of insulating, electrochemically inert non-ferroelectric material such as metallic oxide or fluoride formed directly on the ferroelectric body and underlying the electrodes. The invention avoids the deterioration in response when the body, operating as a storage element, is subjected to high-frequency pulsing with irregular rest periods. The decay is believed to be due to space charge effects resulting from electrolytic reaction of oxygen and other ions in ferroelectric substances such as alkali tantalates and niobates, which is avoided by providing the thin insulating layer preferably of high dielectric constant, between the electrodes and the body. In one example, a body of barium titanate is exposed to anhydrous hydrogen fluoride or fluorine to convert the surface to barium titanium hexafluoride BaTiF6. Alternatively the surface may be etched with hydrochloric acid to form titanium hydroxide which on drying in air forms titanium dioxide. Other acids such as nitric or sulphuric may be used, which form insoluble oxynitrate compounds or barium sulphate respectively. After etching, the body may be dried or baked at 300- 500‹ C. for 16 to 20 hours to provide an adherent insulating film, and washed in ethyl alcohol. Alternatively, the insulating layer may be deposited on the surface of the ferroelectric body, for example by vacuum deposition of aluminium oxide, zirconium dioxide, silicon dioxide or magnesium fluoride, or of titanium dioxide if necessary with a final reoxidization step, or by depositing a film of aluminium, titanium or other metal and subsequently oxidizing. Alternatively oxide films may be produced by spraying a coating of tetrabutyltitanate or tetraisopropyl titanate and drying or firing to provide titanium dioxide, or by decomposing organic compounds of the metals whose oxides are wanted, such as tetraethylsilicate. Fig. 1 shows a barium titanate crystal 11 coated with layers 12 of titanium dioxide across each of which lie metallic electrodes 13 of silver paste or platinum, providing a central operative crystal region 14. Fig. 2 shows a coating chamber comprising a base 21 with cover 22, evacuating outlet 23, tungsten boat 26 containing the material to vaporize on heating by current through terminals 24, a perforated platform 28 being a perforated foil 29 which supports the ferro-electric crystal 201 Coil 204 contains a coolant to condense any remaining gas or oil vapour. Evaporation of the specified dielectric materials is effected by heating to between 1500‹ C. and 2000‹ C. in vacuo, and the evaporation may be controlled by means of movable shield 202.