baber/WOPTO huggingface dataset:
Patent GB-106765-A (GB)
IPC: A47H1/19
Abstract: 106,765. Barrett, B. J., and Amo, E. J. Oct. 30, 1916. Curtains, suspending; brackets, adjusting and securing.-Curtains are supported by horizontal elastic members connected to end supports, which they retain in engagement with the window framing. The elastic members 22, 26, shown in elevation in Figs. 1 and 3 and in plan in Figs. 2 and 4, consist of coiled springs, into the ends of which are screwed eyes 23, 27 to engage hooks on the end supports 12. These end supports are provided with sharpened claws 16 to enter the window framing. To prevent sagging, the elastic members 22, 26 may be supported at the centre by a bracket 47 vertically adjustable on a rackbar 45 suspended from the window framing by a sharpened claw. Each elastic member may be in two parts connected to hooks or an eye on a central bracket. The bracket may be made from a single piece of material, a portion of which is cut out at the centre and bent outwardly to form a stay.
Patent GB-312452-A (GB)
Title: Glare-eliminator or anti-dazzle device for use on vehicle lamps
IPC: F21V5/00
Filed: 1928-04-11
Abstract: 312,452. Canham, F. April 11, 1928. Lantern fronts. - A front glass for a vehicle lamp is provided on both sides with a series of staggened oblique markings. The front markings A and the back markings B may be confined to the upper portion only of the front glass, and instead of providing the markings or both sides of a single glass, the outer surfaces only of a pair of glasses stuck or placed together may be provided with the markings. The markings may be produced by means of white aciding, painting, or bv means of strips of paper or other material, stuck on to the glass.
Patent GB-570359-A (GB)
Title: Improvements in or relating to lecher wire systems
IPC: H01P7/02
Filed: 1940-06-21
Abstract: 570,359. Electric resonators. STANDARD TELEPHONES & CABLES, Ltd., and SMYTH, C. N. June 21, 1940, No. 10705. Drawings to Specification. [Class 40 (iii)] In a resonator comprising a pair of Lecher wires short-circuited at one end, connected to a balanced modulator at the other end and mounted inside a cylindrical screen, resonance between the wires and the screen is prevented by connecting the short-circuited end of the wires to the screen through a resistance equal, to the characteristic impedance of the transmission line formed by the wires and the screen.
Patent GB-107062-A (GB)
IPC: H02K21/32
Abstract: 107,062. Bennett, A. E. June 15, 1916. Drawings to Specification. Magneto-electric machines.-The casing of an ignition or other magneto-electric machine is formed by casting the metal around the polepieces which are in the form of laminated plates and are positioned in the core-box so that the laminated pole-tips are completely covered by the cast metal. The permanent magnet is afterwards slipped over the laminated pole-pieces.
Patent GB-814782-A (GB)
Title: Heating system for dielectric material
IPC: H05B6/50
Filed: 1957-04-02
Abstract: 814,782. Electric tests. ETABLISSEMENTS T.R.M.-TECHNIQUE RADIO MECANIQUE. April 2, 1957 [April 4, 1956], No. 10737/57. Class 37. [Also in Group XXXVII] The high-frequency electric heating of a dielectric material is controlled by measuring the loss angle of the material (as an indication of the temperature of the material) and cutting off the H.T. supply to the power oscillator at a predetermined value of the loss angle. It is stated that in a continuously operating machine, the power oscillator output may be held constant and the rate of feed of the material controlled so as to maintain the loss angle constant, or alternatively a uniform feed rate may be used and the oscillator output controlled to maintain the loss angle constant. In one embodiment, the output of the power oscillator 1 is applied to the load electrodes 3, the voltage across the load being measured by a transformer 39. The output of an auxiliary, low-frequency oscillator 7 is also applied to the load, and the voltage across resistor 45 (which is proportional to the current supplied by oscillator 7) is applied to a transformer 38. Resistor 45 is part of a network 45, 46, 47 which is so proportioned that the voltage across resistor 45 is in quadrature phase relationship with the voltage across transformer 39 at the desired loss angle of the load. Transformers 38, 39 are part of a phase discriminator 2, the output of which falls to zero under these conditions. This removes part of the bias from a thyratron 30 which fires and energizes a relay 25 to interrupt the mains supply to the H.T. circuit of the power oscillator 1. At the same time, the oscillator 1 is biased to cut-off by the voltage across capacitor 28. In a modification, Fig. 5 (not shown) the auxiliary oscillator is omitted and the main load current and voltage are compared.
Patent GB-1145923-A (GB)
Title: High impact styrene polymer compositions and process of making the same
IPC: C08L25/06
Filed: 1966-03-11
Abstract: 1,145,923. High impact styrene polymers. DOW CHEMICAL CO. 11 March, 1966 [15 March, 1965], No. 10748/66. Heading C3G. A high impact styrene polymer is prepared by a process comprising polymerizing from 99 to 80 parts by weight of a styrene monomer with from 1 to 20 parts of an elastomer consisting of natural rubber, a homopolymer of butadiene or a rubbery copolymer of butadiene in the presence of from 0À5 to 10 parts by weight of the styrene monomer and elastomer taken together of (a) a block copolymer of a conjugated diolefin and and an alkenyl aromatic hydrocarbon or (b) a graft copolymer of an alkenyl aromatic hydrocarbon upon a polymer of a conjugated diolefin, said copolymer (a) or (b) containing in chemically combined form from 30 to 90 weight per cent of the alkenyl aromatic hydrocarbon and from 70 to 10 weight per cent of the conjugated diolefin, the polymerization mixture being agitated during at least the initial part of the polymerization. In one embodiment, a solution of the elastomer in the styrene monomer is partially polymerized with agitation prior to addition of copolymer (a) or (b) and completion of polymerization. Alternatively, a mixture of the styrene monomer, the elastomer and copolymer (a) or (b) is partially polymerized with agitation and polymerization is completed without agitation. In the examples, stereospecific polybutadiene is grafted with styrene in the presence of (a) a butadiene-styrene or isoprenestyrene block copolymer or (b) a stereospecific polybutadiene grafted with styrene.
Patent GB-1281112-A (GB)
Title: A method of preparing catalysts
Inventor: MARKINA MARGARITA IVANOVNA
IPC: B01J37/00
Filed: 1970-03-06
Abstract: 1281112 Catalysts M I MARKINA T A SEMENOVA G P CHERKASOV N I JUSHKINA A S ANOKHINA B I SHTEINBERT L I KOZLOV AD KRUTOV I K MAIOROV and N N AXENOV 6 May 1970 10769/70 Heading B1E [Also in Division C5] Catalysts are made by mixing a 35-80 wt. % aq. solution or a melt of a nitrate or acetate of Mg, Al or an element of atomic number 20-31 and 38-84 with oxalic acid or a powdered hydroxide, carbonate or basic carbonate of one of the above metals and calcining the mixture at 300-700‹C. The calcinate may be mixed with binders such as kaolin or cement and lubricants such as graphite and talc. In a typical example an aq. soln. of Al(NO 3 ) 3 , Cr(NO 3 ) 3  and Cu(NO 3 ) 2  is mixed with basic magnesium carbonate and the mixture is calcined at 550‹C, ground mixed with graphite and tabletted. In a similar example Al(OH) 3  is added with the basic carbonate in each case the catalyst consists of Al 2 O 3 , Cr 2 O 3 , CuO, MgO. Other catalysts made in examples are ZnO, Al 2 O 3 , CuO, MgO; Al 2 O 3 , Cr 2 O 3 , CuO, MnO; ZnO, Al 2 O 3 , CuO; and Ni 2 O 3 , Al 2 O 3 , MgO, Fe 2 O 3 : the oxides being present in various proportions.
Patent GB-329771-A (GB)
Title: Improvement in backing for artificial teeth
IPC: A61C13/10
Filed: 1929-04-08
Abstract: 329,771. Montuori, F. C. April 8, 1929. Teeth, artificial.-Backing plates 3 for artificial teeth 8 are formed on the side remote from the teeth with longitudinal ribs 10 which serve to prevent gravitational flow of the solder 6 when connecting a series of such backings to form a bridge as in Fig. 1, and serve also to gauge the uniform application of the solder. Each plate 3 may be formed with one or more ribs which may be soldered or otherwise secured thereto, or formed integral therewith, as in Fig. 9, and may be straight or curved, may be inclined to the longitudinal axis of the plate 3, or may be each constituted by a series of separate protuberances 13, as in Fig. 12. The solder may be applied so as to form slight depressions 12, Fig. 5, between the ribs 10. The porcelain teeth are formed with grooves 9 engaging tongues 7 on the labial sides of the backing plates.
Patent GB-348326-A (GB)
Title: Improvements in the manufacture of tennis rackets
IPC: A63B49/08
Filed: 1930-04-05
Abstract: 348,326. Rackets. POLETTI, G., 18, Via Revere, Milan, Italy. April 5, 1930, No. 10914. Convention date, June 17, 1929. [Class 132 (ii).] Relates to a tennis racket wherein the frame comprises a piece of wood D bent to the required shape and having its end portions J connected together to form a core for the handle K, and consists in forming grooves L in the adjacent surfaces of the end portions J to permit these end portions to interlock as shown. The junction of the end portions is covered on both sides of the racket by means of overlapping wooden strips G, H glued to the frame and handle. The strengthening effect of the overlapping strips allows the usual wedge and bridge-piece to be dispensed with.
Patent GB-692432-A (GB)
Title: Improvements in or relating to the polymerization of vinyl chloride and/or vinylidene chloride
IPC: C08F14/06
Filed: 1950-05-04
Abstract: Latex-like polymer dispersions are made, in the absence of emulsifiers, protective colloids and other surface-active agents, oils, plasticizers, solvents and other organic liquids, by agitating at 0 DEG  to 100 DEG  C. an aqueous medium containing only 100 parts of liquid monomeric material comprising vinyl chloride and/or vinylidene chloride, 400 to 600 parts of water, 0.1 to 1.0 part of a water-soluble persulphate, e.g. sodium, potassium and ammonium persulphates and an alkaline buffer salt, e.g. sodium carbonate, bicarbonate, acetate, tetraborate, pyrophosphate and silicate, ammonium carbonate, bicarbonate.  The monomeric material may include methyl, ethyl, propyl, butyl and octyl acrylates; methyl methacrylate, butyl ethacrylate; acrylonitrile, methacrylonitrile, a -chloroacrylonitrile; methacrylamide; styrene, p-chlorostyrene, 3,5-dichlorostyrene, p-methoxystyrene; vinyl bromide, fluoride, and iodide; vinylidene bromide and chlorofluoride; vinyl acetate, propionate, butyrate, benzoate; diethyl fumarate; vinyl methyl ketone; vinyl methyl ether; vinyl pyridine and vinyl carbazole. Figures are given for the tensile strength, modulus at 100 per cent elongation and elongation at break for polyvinyl chloride plasticized with di-2-ethyl hexyl phthalate.
Patent GB-1360705-A (GB)
Title: Chroma key circuit
IPC: H04N9/75
Filed: 1972-03-09
Abstract: 1360705 Colour television PHILIPS BROADCAST EQUIPMENT CORP 9 March 1972 [12 March 1971] 11064/72 Heading H4F In a television system for superimposing a person viewed by a first camera on a background viewed by a second camera an identification circuit is provided for determining when the first camera is scanning a selected colour, e.g. blue forming the background viewed by the first camera, the identification circuit then producing an output pulse to gate out the signal from the first camera and gate in the signal from the second camera. The R, G, B signals from the first camera are passed to a matrix 22 which develops -(B-M) and -(R-M) colour difference signals which are passed to variable gain amplifiers 23, 24 and 25, 26 each of which also receives an amplification gain control input either from inverter 33 or from one of voltage generators 31, 32 which generate triangular voltages approximating to -sinx and -cosx respectively, where x is an adjustable input voltage. The resulting signals from amplifiers 23, 25 and 24, 26 which are each the inverse of the product of the respective input signals are fed to adder, inverter and clamp circuits 34, 35 to derive (B-M) sinx-(R-M)cosx and (BM)cosx + (R-M)sinx voltages respectively which are fed to AND gate 36 to produce an output pulse when the signals fed to it from 34, 35 indicate a selected colour, input voltage x being adjusted to select this colour, a variable negative bias supply 91 also being connected to gate 36 to provide fine colour adjustment by adjusting the trigger level of gate 36. A delay 37 is provided to compensate for delay caused to the signals from the first camera due to an encoding circuit provided prior to transmission of the signal from the first camera and the output pulses from the identification circuit, the transmitted camera signal also being added to a pedestal voltage, which is removed at the location of the second camera. The pulse from delay 37 is shaped at 38 and clipped at 39. Other embodiments are described for biasing gate 36 with parts of the outputs from 34 and 35 (Fig. 5, not shown), or by passing the output from 34 to two inputs of gate 36, the output from 35 being passed via an AND gate to an inhibit terminal of gate 36 (Fig. 6, not shown). Voltage generators 31, 32 may each comprise an operational amplifier with one input connected to voltage x via a resistor and another input connected to voltage x via a diode arrangement of two oppositely poled diodes for the -cosx generator (Fig. 3, not shown) or a four diode bridge for the -sinx generator (Fig. 4, not shown).
Patent GB-428497-A (GB)
Title: Improvements in and relating to rotary swivels for well boring apparatus
IPC: E21B21/02
Filed: 1934-04-12
Abstract: 428,497. Force - feed lubricating. NATIONAL SUPPLY CORPORATION, 120, Broadway, New York, U.S.A., and OIL WELL ENGINEERING CO., Ltd., Cheadle Heath, Stockport, Cheshire. April 12, 1934, No. 11088. Convention date, Sept. 12, 1933. [Class 12 (iii)] [See also Group XXI] A swivel for well-drilling apparatus comprises a body 1 supported by bails 3, and a sleeve 8 secured to the drill pipes and rotatable in bearings comprising a downthrust bearing 11, an upthrust bearing 10 and radial bearings 12, 13, the sleeve 8 and the bearings being removable as a unit. An anchor plate 16 for the bearings is normally held by a sleeve 20 and a threaded split ring 21 locked by a screw 32. The upthrust bearing 10 is supported on a collar 26 threaded to the sleeve 8. A sleeve 30 and shims 31 between the bearings 10, 12, provide for adjustment. Lubricating means comprises a cam 44, Fig. 3, on the collar 26 which operates a spring pressed plunger 40 to pump oil from the body 1 through ports in the body and cover 14 to the bearing 13 which is surrounded by a sleeve 47 over which the oil passes to the remaining bearings.
Patent GB-591213-A (GB)
Title: Improved process for producing wood grain effects on a rigid base
IPC: B44F9/02
Filed: 1945-05-03
Abstract: A resilient stamp for applying wood grain effects on rigid bases (see Group XV), is made from a line drawing on paper or similar material of the grain required.  The stamp is made of vulcanized rubber or other resilient material.
Patent GB-353047-A (GB)
Title: Improvements in the manufacture and production of alcohols
IPC: C07C29/50
Filed: 1930-04-10
Abstract: Alcohols; esters.-Products consisting mainly of alcohols together with some esters are obtained by oxidizing hydrocarbons having boiling points above 180 DEG  C. in the liquid state with air or other gaseous oxidant at atmospheric pressure in the presence of at least two per cent by weight of the initial hydrocarbons of acids having a dissociation constant between 2,5 X 10-4 and 2 X 10-13, the operation being stopped as soon as a sample shows a saponification value of 70.  Suitable acids are formic, acetic, propionic, maleic or benzoic acids, or inorganic acids such as boric acid or anhydride, stannic acid, or antimony pentoxide; since water is formed in the reaction, the anhydrides may be added originally instead of the acids themselves.  The acids may be added all at once or in fractions, or may be led into the reaction mass in vapour form with the current of oxidizing gas; they may be recovered in any suitable manner from the vapours leaving the reaction vessel.  Aliphatic hydrocarbons such as petroleum fractions, middle oils, paraffin, ceresin, naphthene hydrocarbons, or synthetic hydrocarbons obtained by the hydrogenation of tars may be used as starting instances. Catalysts such as resinates or naphthenates, for example, manganese naphthenale, may be present in addition to the acids. After the removal of the acid constituents the reaction products are separated in known manner, for example, with the aid of organic solvents such as ethyl alcohol, or by crystallization. Examples are given.  The Provisional Specification mentions the use instead of acids of acid esters or acid chlorides which decompose to form the corresponding acid or leave an acid reaction.  Specifications 142,507, 183,186, 255,020, and 287,514, [all in Class 2 (iii), Dyes &c.], are referred to.
Patent GB-712298-A (GB)
Title: Improvements in and relating to vibrating reed interrupters and applications thereof
Inventor: MACINTYRE DOUGLAS STEWART
IPC: H01H50/76
Filed: 1952-05-06
Abstract: 712,298. Electromagnetic interrupters. ULTRA ELECTRIC, Ltd. March 6, 1953 [May 6, 1952], No. 11443/52. Class 38(5) [Also in Group XXXV] A vibrating interrupter comprises a vibrating reed 1mounted on a magnetic core 2 which caries a main winding 5 energized from a source 7, and an auxiliary winding 6 in series with the supply 7, a fixed contact 4, a contact 3 mounted on the reed 1, and the primary winding p of an output transformer. When winding 5 is energized, reed 1 is attracted downwards, contacts 3, 4 engage, winding 6 is energized to produce an M.M.F. which opposes that of winding 5 and the reed is released to move upwards. This make and break at contacts 3, 4 interrupts continuously the current through winding p. Main contacts 8. 9 may also be operated. In a modification, Fig. 2 (not shown) the core has three limbs carrying respectively the windings 5, 6 and an output winding which is energized by periodic flux changes in the core limb which carries it.
Patent GB-400264-A (GB)
Title: Improvements in or relating to colour cinematography
IPC: G03B33/00
Filed: 1932-04-22
Abstract: 400,264. Colour kinematography. MURRAY, H. D. and SPENCER, D. A., 118, Fulham Road, London. April 22, 1932, Nos. 11629/32 and 3999/33. [Classes 97 (i) and 98 (ii).] A process of colour kinematography comprises recording on one side of a doublecoated film positive images corresponding alternately to negative selection records of two primary colours, and on the other side images corresponding to a negative selection record of the third primary colour ; toning all the images on one side in one colour and all those on the other side in another colour ; and projecting successive frames of the film through two filters which are additively complementary and are of such colour and so appropriated to the frames that each filter will absorb those rays of light which are transmitted by the primary colour a record of which is absent from the frame. The projection filter may be a rotating disc or may be a coloured stain applied to the film itself. In one example of the process, negatives 11, 12, 13 are taken through blue, red and green filters, for example, on bipack material using a light-splitting device of known type, the red record being duplicated, and printed on double coated stock, one frame bearing the positive records 15, 16 from the negatives 11, 12 and the succeeding frame the positive records 17, 18 from the negative 13 and the duplicate red record negative 14. The positives 15, 17 on one side of the film are toned primary red and the positives 16, 18 toned minus-red, and the records are projected through a blue and a minus-blue filter respectively. The Figure shows the steps in the case of a colour chart 10 of the primary colours, the minuscolours, black, and white. In a further example, a negative record is obtained on a bipack film by the method described in Specification 363,000, by means of which a film is produced having successive green and blue records on the front and a continuous red record on the rear. The green and blue records are printed on the front of a double coated positive film and toned red. Alternate red records are printed on the rear of the same film in register with the green records and toned green, the areas behind the blue records being left blank. The superposed records are projected through a minus-blue filter and the single record through a blue filter. The projection of the frames may be effected successively, or an optical device used to combine the pairs of images. The colouring of the images may be effected by the process of Specification 377,706. It is stated that the process may be employed to give a stereoscopic effect. Specification 363,616 also is referred to.
Patent GB-473992-A (GB)
Title: Manufacture of bromonaphthoic acid
IPC: C07C51/363
Filed: 1936-04-25
Abstract: 8-Bromo-1-naphthoic acid is made by interacting anhydro-8-hydroxymercuri-1-naphthoic acid and bromine in aqueous hydrochloric acid.  In examples, anhydro - 8 - hydroxymercuri - 1 p - naphthoic acid is mixed with water and caustic potash, cooled to 0--5 DEG  C. and treated with bromine and hydrochloric acid, or heated with water and caustic potash to 60--80 DEG  C. to give potassium 8-hydroxymercuri-1-naphthoate and then cooled and brominated.
Patent GB-623342-A (GB)
Title: Improvements in or relating to circulating lubricating systems
IPC: F16N7/40
Filed: 1947-05-02
Abstract: 623,342. Force feed lubrication system. SHARPLES CORPORATION. May 2, 1947, No. 11843. Convention date, May 16, 1946. [Class 12 (iii)] In a lubricant circulation system the energy contained in the fluid, returning under the action of a scavenge pump 13 from the sump of an engine 11 to a reservoir 10, is utilized to drive a hydraulic-type motor 15 which actuates a booster pump 16 adjacent the reservoir outlet. This ensures a supply of lubricant at super-atmospheric pressure to an engine pump 12 which otherwise is liable to an insufficient feed, e.g. in aircraft engines, due, as a result of conduit friction, to enlargement of air bubbles entrained in the lubricant and, at high altitudes, to lack of gravity head and atmospheric pressure.
Patent GB-126961-A (GB)
Title: A New Process for Decomposing Mercury, and Obtaining Radium and Gold, which are Contained in the Formation of this Metal.
Inventor: PEREZ GERMAN BOTELLA
IPC: G21G1/00
Filed: 1919-05-12
Abstract: 126,961. Perez, G. B. May 15, 1918, [Convention date]. Sulphur dioxide.-Gold and radio-active material in the form of sulphurous anhydride or radium are alleged to be obtained by the decomposition of mercury by subjecting it to the action of electric discharges in a Crookes tube. The apparatus used comprises a Crookes tube having electrodes C, D, each comprising two converging wires downwardly inclined towards a depression A closed by a plug. The operation is carried out at 40‹ C.