baber/WOPTO huggingface dataset:
Patent GB-927082-A (GB)
Title: Improvements relating to the reading of characters
Inventor: INGHAM WILLIAM ELLIS
IPC: G06V30/224
Filed: 1958-08-23
Abstract: 927,082. Automatic character reading. ELECTRIC & MUSICAL INDUSTRIES Ltd. Aug. 20, 1959 [Aug. 23, 1958], No. 27126/58. Class 106 (1). Magnetic characters of the kind shown in Figs. 1 and 2 are passed beneath a group of magnetic reading heads which sense strips A-G &c., Fig. 1, to produce corresponding A.C. signals which are sampled at points a-e and applied to a threshold device to derive binary signals, the binary signals on the several strips being combined to produce a further binary signal at each sample point, and identifying the character from these sample point signals. In the form described there are ten strips, the character being covered by 5. This compensates for vertical misalignment. The ten read heads 7a-7j, Fig. 5, are connected to transistor amplifiers 8a-8j and impedances 9a-9c connected between adjacent pairs compensate for cross-talk between heads, alternate coils being oppositely poled. After passing through variable gain amplifiers 10a-10j, peak rectifiers 11a and further amplifiers 12a-12j the signals pass to threshold devices 13a-13j. The threshold value is set by a device 14 which is controlled by a diode detector 15 which provides a signal equal to the highest signal on any of the lines. Adjacent lines are gated together, an Or gate 17 giving an output when a signal appears on any pair of adjacent lines. The drive mechanism for the cheque feed includes a disc 39, Fig. 6, having holes round the circumference photo-electrically sensed to produce clock pulses on lead 29 (Fig. 7c). The first output from gate 17 sets a bi-stable device 22 which remains set as shown in Fig. 7b. Gate 27 is thereby controlled to pass a group of pulses which are applied to counter 24, 25, 26. The successive states of these stages are shown in Fig. 7d, 7e, 7f. A three-input gate 20 receives the output of gate 17 on line 18 and the outputs of counter stages 25 and 26, the presence of a signal on line 18 at a count of eight causing a " 1 " to be entered into stage 30 of the shift register store 32. Successive samples, five in number, are entered into the stages of the shift register. The samples for the character " 5 " are shown in Fig. 7h. If a spurious signal sets trigger 22 and starts the counter 24-26, this signal will not last long enough to cause a " 1 " to enter the shift register at the count of eight. The " 0 " in the first stage allows the first sampling pulse to pass through gates 36, 37 to reset the trigger 22 and the counter. The presence of a " 0 " in the first stage does not normally cause resetting in this way because of a trigger 35 which is set as shown at 7i to inhibit gate 36. Outputs from the middle five stages of the shift register pass to a decoding matrix in which certain combinations of five binary bits give a character indication on one of ten lines.
Patent GB-1263397-A (GB)
Title: Improvements in drill chucks
IPC: B23B31/12
Filed: 1970-06-05
Abstract: 1,263,397. Chucks. ROBERT BOSCH G.m.b.H. 5 June, 1970 [7 June, 1969], No. 27136/70. Heading B3B.  In a three jaw drill chuck of the kind comprising a chuck body 1 having an internally screw-threaded bore 2 for screwing on to a drive spindle for operating the chuck, a sleeve 4 rigidly connected to the said body and having an internal conical surface 7, a jaw closing member 11 axially movable in the chuck body and comprising a plate 9 and a spigot 10 for abutting the spindle, and springs 14 supporting the jaws 12 against the internal conical surface 7, the said chuck is characterized in that the diameter of the spigot 10 is arranged to be at least one-third of the diameter of the plate 9, and the top endface of the spigot 10 and the bottom end-face of the plate 9, which faces extend perpendicularly to the axis of the chuck body, are arranged to lie in parallel planes. The diameter of the spigot 10 is preferably one-half the diameter of the plate 9, and the half-apex angle of the conical surface is between 24 and 28 degrees, preferably 26 degrees.
Patent GB-297441-A (GB)
Title: Manufacture of acid dyestuffs of the phenonaphthosafranine series
IPC: C09B17/04
Filed: 1928-09-21
Abstract: 297,441. Geigy Akt.-Ges., J. R. Sept. 21, 1927, [Convention date]. Addition to 265,986 and 284,615. Azine dyes.-Acid dyestuffs fast to alkali are preheated by further sulphonating phenonaphthosafranine monosulphonic acids of the following general formula: in which R stands for arylkyl or aryl, R' for hydrogen, alkyl, aralkyl or aryl, R<2> for alkyl and R<3> for hydrogen or alkyl. The phenonaphthosafranine-16-sulphanic acids are prepared according to the process of Specification 284,615 and are insoluble in dilute acids and sodium carbonate solutions. According to an example, the phononaphthosafranine.16-sulphonic acid prepared by coupling 6-sulpho-3-ethylbenzylisorosinduline with sodium 1 - methyl - 2 - ethylamino-5-amino-4-sulphonate is sulphonated by means of fuming sulphuric acid. 6-Sulpho-3-ethylbenzylisorosinduline is prepared by coupling 2-phenylnaphthylamine with 4-nitroso- 1-ethylbenzylaniline, sulphonating by means of alkali sulphite and oxidizing. Specifications 24410/97, 8898/93, 284,614 and 285,486 also are referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the sulphonation of phenonaphthosafranine-16-sulphonic acids, having the above general formula, in which the substituted amino group in the 18-position may be aralkyl- or aryl-amino. This subject-matter does not appear in the Specification as accepted.
Patent GB-1283989-A (GB)
Title: Allergenic extracts and method for their preparation
Inventor: WHITTLE GEOFFREY
IPC: A61K39/36
Filed: 1969-12-15
Abstract: 1283989 Allergenic extracts OMEGA LABORATORIES Ltd 24 Nov 1970 [15 Dec 1969 5 June 1970] 60943/69 and 27227/70 Heading A5B An extract of an allergenic inhalant, characterised by its substantial insolubility in water, the presence of all the glycerine-soluble allergenic factors, the absence of organic complexes and fatty fractions and its stability to storage, is prepared by a process which comprises treating a defatted, dialyzed, aqueous extract of an allergenic inhalant with an equal volume of a flocculating agent (seleoted from alkali metal and alkaline earth metal aluminium sulphates) while maintaining the pH within the range 7.4-7.6 thereby to precipitate the allergenic factors, separating the precipitate, removing any electrolytes from the precipitate by washing, and maintaining the washed precipitate at a temperature of 0‹C or below and, after allowing the precipitate to reach room temperature, resuspending the precipitate thus obtained in sterile water.
Patent GB-153771-A (GB)
Title: Improvements in casement stays and in the manufacture of the same
IPC: E05C17/18
Filed: 1919-11-05
Abstract: 153,771. Parkes, S. R. Nov. 5, 1919. Double and multiple hinges. - A casement stay made by press tools from wrought iron or steel comprises a stay bar A formed with a slotted loop a<1> to take a pivoted link B with an abutment b<3> for the bar, the opposite end of the link B being twisted through a right angle and pivoted between the upturned lugs d<1> of a plate D fixed to the window sash.
Patent GB-519314-A (GB)
Title: Improved process for working up polyvinyl acetals
IPC: C08L29/14
Filed: 1938-09-19
Abstract: 519,314. Artificial filaments etc.; polyvinyl acetal resins. DEUTSCHE , CELLULOIDFABRIK AKT.-GES.. Sept. 19, 1938, No. 27260. Convention date, Sept. 17, 1937. [Classes 2 (ii) and 2 (iii)] Shaped structures, e.g., threads, are made by bringing into contact a solution of a polyvinyl acetal in an aqueous mineral acid of at least 6N-concentration and an alkaline or ammoniacal solution of cellulose or a cellulose derivative so as to produce a mixed structure comprising polyvinyl and cellulosic materials. The cellulosic solution may be a solution of cellulose in ammoniacal copper oxide, or of oxyethyl cellulose, cellulose glycollic acid, a cellulose ether or a cellulose ether carboxylic acid in alkali or mixtures thereof. In an example polyvinyl formal dissolved in 6N-hydrochloric acid or 10N-sulphuric acid is extruded through the. inner part of an annular tube to meet a solution of cellulosic material coming from the outer part of the tube. The threads produced may be woven or knitted. The Specification as open to inspection under 'Sect. 91 refers broadly to the use in working up polyvinyl acetals of solutions thereof in acids of concentration at least 6N, and states that from sucn solutions films or threads may be precipitated by water or alkaline or ammoniacal liquids. In additional examples : a solution of polyvinyl formal in 6N-hydrochloric acid is poured through a slit into water to obtain a film ; a solution of polyvinyl formal in 10 N-sulphuric acid is precipitated in an aqueous sodium carbonate bath to obtain a porous mass suitable for use as a sponge or as a carrier for " active masses." This subjectmatter does not appear in the Specification as accepted.
Patent GB-767544-A (GB)
Title: Improvements in or relating to coin freed weighing machines
IPC: G07F17/26
Filed: 1954-09-21
Abstract: 767,544. Photo-electric control systems. SIMPKIN, W. A. Sept. 21, 1955 [Sept. 21, 1954], No. 27285/54. Class 40 (3). [Also in Group XVIII] In a coin-freed weighing machine, the date when the machine was last checked is reproduced from an endless recording tape 119, driven by a motor which is set in operation by a switch 6 operated by the coin trip lever 7 and, after one circuit of the tape, is stopped when a lamp 24 shining through a notch or transparency in the tape and through a slotted screen 46 excites a photo-electric cell 23.
Patent GB-868045-A (GB)
Title: Dried egg product and method of preparation
IPC: A23L15/00
Filed: 1959-08-10
Abstract: Whole eggs, yolks, or whole eggs to which some additional yolk has been added, are treated with corn syrup or malt syrup with a dextrose equivalent of 20-35%, in quantities varying from 5-20% by weight and drying, preferably to a moisture content not greater than 8%.  The dried product is preferably stored in a moisture-proof container at 45 DEG  \sB 5 DEG F.
Patent GB-385922-A (GB)
Title: Improvements in and relating to a method and apparatus for the manufacture of tubes from sheet metal
IPC: B21C37/08
Filed: 1932-10-01
Abstract: 385,922. Making tubes by bending. MANNESMANNRÍHREN - WERKE, 1B, Berger Ufer, D³sseldorf, Germany. Oct. 1, 1932, No. 27323. Convention date, Oct. 3, 1931. [Class 83 (iv).] Both of the flat edges of a longitudinally butt-seamed metal tube are simultaneously rounded by inner and outer bending rollers moved relatively to the edges from one end of the seam to the other. A pair of preliminary rollers 2a, 3a and a pair of finishing rollers 2, 3 may be mounted in frames relatively adjustable by screws 6 in a bracket 7 which is passed through the seam and is of such thickness as not to cause opening of the seam beyond the elastic limit of the metal. The tube may be pulled or pushed through the apparatus, the apparatus may be traversed over the tube, or the rollers may be positively driven so as to feed the tube therethrough. Instead of the outer rolls being of such length as to cover the part to be rounded, a number of discs 9 may be mounted in supports axially adjustable in carriers 10 which are adjustable in circumferential grooves in their frames. The inner roll 3 may also be replaced by separate rolls 11, one on each side of the bracket 7. The radius of the rolls is slightly smaller than that desired in the finished tube so that when the pressure is relieved it will spring out to the required radius.
Patent GB-1478481-A (GB)
Title: Cleaning methods and compositions
IPC: C11D7/32
Filed: 1974-06-20
Abstract: 1478481 Oven cleaning process CHURCH & DWIGHT Inc 20 June 1974 [20 July 1973] 27333/74 Heading C5D A method of removing cooking soils containing free or combined organic acids from a surface, e.g. an oven, comprises contacting the soiled surface with a composition containing an aliphatic compound having two or more hydroxy groups, in which the numerical ratio of carbon atoms to hydroxyl groups is not greater than 15, and, in an amount of up to 2% by weight, an alkaline acting catalyst capable of accelerating alcoholysis reactions, heating the soiled surface and composition to at least 250 F. and removing the soil residue from the surface. The hydroxy compound may be ethylene glycol, diethylene glycol, triethylene glycol, glycerol, diglycerol, triglycerol, pentaerythritol, sorbitol, mannitol, inositol, trimethylol propane, trimethylol ethane, C 2  to C 7  aliphatic diols, C 3  to C 7  aliphatic triols and partial esters of polyols and C 1  to C 7  aliphatic carboxylic acids. The alkaline catalyst may be an alkali metal hydroxide or alcoholate, calcium hydroxide, alkali metal carbonates, formates, acetates, glycinates or glycolates, or the oxides or alkoxides of Ca, Mg, Pb, Sn or zinc. Optional additions are (C) anionic, cationic, nonionic or amphoteric surfactants or mixtures thereof; (D) thickening agents such as magnesium aluminium silicates, gums and water-soluble polymers; (F) granular water-insoluble material such as calcium carbonate. The compositions may be in the form of pastes, liquids or aerosols. After the composition has been applied to the soil surface and heated to at least 250 F., the residue is then washed off with water.
Patent GB-957608-A (GB)
Title: Improvements in or relating to infra-red radiators
IPC: C09K11/08
Filed: 1960-08-08
Abstract: A material, emitting infra-red radiation of wavelength with a maximum between 1.8 and 2.4 microns under excitation by visible or U.V. light or electrons, comprises a compound of one or both of Zn and Cd and at least one of S, Se and Te, activated with from 10-2 to 10-6, preferably 5 X 10-5 to 5 X 10-4, atoms of V per mol. of compound. A coactivator may be present comprising the same proportion of at least one of Cu, Hg and Au.  In an example a mixture of ZnS, a solution of ammonium metavanadate and a solution of silver nitrate is dried at between 80 DEG  C. and 150 DEG  C. and heated in a quartz vessel at 1100 DEG  C. for 2 hours in an atmosphere of dry H2S.  After cooling the fired product is ground, homogenized and again heated under the same conditions and for the same period.  Chlorides or fluorides of the alkali metals can be used as fluxes.  Vanadium pentoxide can be used instead of the metavanadate. If desired the compounds containing the activator and coactivator elements can be mixed as dry substances with the zinc sulphide.  The heating temperature when using cadmium selenide is preferably about 950 DEG  C. The selenide materials are preferably heated in an atmosphere of H2Se to which a quantity of hydrogen or nitrogen has been added.  The telluride materials are preferably heated in an atmosphere of hydrogen or nitrogen.  The materials in the form of a disc can be used in inductor or switch in combination with a disc of photo-sensitive lead sulphide which has a maximum excitation at about 2.5 microns.
Patent GB-1460064-A (GB)
Title: Packages comprising eye baths and eye lotions
IPC: A61H35/02
Filed: 1974-06-20
Abstract: 1460064 Eye baths OPTREX Ltd 18 June 1975 [20 June 1974] 27444/74 Heading A5R [Also in Division B8] A packaged assembly comprises at least one eye bath and at least one discrete aliquot of eye lotion sufficient to fill the eye bath to an appropriate level for bathing an eye, the interior of the eye bath and the eye lotion being sterile and being sealed against contamination. As shown in Fig. 1, the assembly may comprise eye baths 2, 2' having a common base 3 each filled with eye lotion and sealed by membranes 4, 4'. The assembly may be surrounded by a sealed envelope 6. The membranes may be formed with lines of weakness and provided with tabs or rings 8, 8'. The eye baths may be filled through tubes 9, 9'. The package may also comprise an eye bath 20, containing an inner envelope 21 which contains the eye lotion, and an outer envelope 22 surrounding eye bath 20 and envelope 21, (Fig. 3, not shown). In a further embodiment, a package comprises a dual eye bath unit of similar shape to that shown in Fig. I containing a sealed sachet of eye lotion in each eye bath portion and an outer sealed envelope surrounding the dual eye bath unit and sachets (Fig. 4 not shown). A dual eye bath unit may be made by a blow-moulding process and injection filled. The membrane 46 may be connected to the wall 44 at a line of weakness 47 and may be provided with a rib 48 and ring structures 49 to facilitate removal. Alternatively, the package may comprise an eye bath 60, see Fig. 8, holding an aliquot of eye lotion and sealed by a membrane 62, which may be provided with a tab 63. Each eye bath may be open at the bottom and may be provided with a bottom edge 67 which conforms to the shape of the rim section 61, thereby assisting stacking of a plurality of such eye baths. In further embodiments the rim of the eye bath is in the form of a flange which is smoothly bent over in a downward direction, and the eye bath is sealed by a membrane which extends over the flange (Fig. 9 not shown). The floor of one bath may act as a sealing membrane for an eye bath arranged below it (Fig. 10 not shown). The membrane may be provided with a line of weakness and tab, (Fig. 11, not shown).
Patent GB-406781-A (GB)
Title: Improvements in and relating to airscrew
IPC: B64C11/24
Filed: 1932-10-04
Abstract: 406,781. Screw propellers. CARTER, J., Amara, Farnborough Road, Farnborough, Hampshire. Oct. 4, 1932, No. 27470. [Class 114.] In an air forced feed device for aeroplane engines air is compressed by means of the propeller, the blades of which are provided with a partial longitudinal partition 2 extending from admission openings 1 in the neighbourhood of the propeller boss towards the tip. The air which is driven by centrifugal force towards the propeller tip is led back along the compartment 3 on the other side of the partition 3 through openings 4 and the stuffing box 5 to the power unit. To warm the inflowing air, exhaust gases from the engine are led to the compartment 9 adjacent to the compartment 9 and finally escape at the trailing edge of the blade through perforations 10.
Patent GB-297742-A (GB)
IPC: F22B1/28
Filed: 1928-09-25
Abstract: 297,742. British Thomson-Houston Co., Ltd., (Assignees of Otis, A. N.). Sept. 26, 1927, [Convention date]. Heating by electricity.-A vertical steam generator has sections 10, 11 of different diameter connected by a flange 12 carrying immersion heaters 14. A cylindrical baffle 16 is arranged on supports 17 to promote circulation. The heaters 14 comprise sheathed units in the shape of hairpins and mounted in plugs 15 screwed into the flange 12. The flange and heaters are inclined in Fig. 2. Feed water is supplied through a pipe 19.
Patent GB-1549073-A (GB)
Title: Transmitting and processing switching characteristics for connection traffic in a telephone network
IPC: H04Q3/62
Filed: 1976-07-02
Abstract: The AC audio-frequency signalling method with a large switching signal stock is used for the connection traffic between primary systems and dial-up secondary systems in telephone networks, the individual switching signals being composed of primary signals (HK1...HK4) and secondary signals (NK1...NK1''') and the primary signals (HK1...HK4) and secondary signals (NK1...NK1''') being able to be distinguished from one another by different frequencies and to have individually different lengths. The purpose of the method is to safeguard through-connection for a specific transmission direction when switching signals from different directions collide and interfere with one another. This is achieved through repetition of a secondary signal transmitted between two primary signals. <IMAGE>
Patent GB-708801-A (GB)
Title: Improvements in or relating to the production of fused cyclic derivatives of thiophene
Filed: 1948-10-23
Abstract: Fused cyclic thiophene derivatives are made by a modification of the process of Specification 672,124 which comprises reacting with a carbocyclic or heterocyclic compound containing, on adjacent nuclear carbon atoms, a hydrogen atom and an aliphatic side chain of at least two carbon atoms, which does not contain an olefinic bond in conjugated relationship with an olefinic or other unsaturated bond in the cyclic portion of the compound, hydrogen sulphide or a volatile thermally labile sulphide and mixtures thereof at at least 700 DEG F. in the presence of a surface active or solid contact oxide or sulphide catalyst which is stable under the reaction conditions. Preferably aryl compounds containing an alkyl substituent are reacted with hydrogen sulphide at 700-1400 DEG  F. in the presence of catalysts such as molybdena-alumina and silica-chromia-alumina. Specified starting materials are ethylbenzene, cumene, paracymene, propyl thiophene, 3-ethyl thiophene, 2-ethyl pyridine, 2-phenyl ethanol and p-chloro ethyl benzene.  When substituted derivatives of the cyclic compounds are used it is necessary that the cyclic compound contains a hydrogen atom on a nuclear carbon atom adjacent to the carbon atom containing the aliphatic-side chain and that the beta carbon atom of this side chain contains at least one hydrogen atom attached thereto or a readily replaceable group such as hydroxyl, bromine or chlorine.  Sulphides mentioned include organic and inorganic sulphides, hydrosulphides and polysulphides.  Metal sulphides are excluded as non-volatile.  Representative of specified sulphides are ammonium sulphide, hydrosulphide and polysulphide, ethyl mercaptan and tert. butyl sulphide.  Representative of other specified catalysts are alumina, oxides of chromium, vanadium, boron and silica and sulphides of iron, tungsten and tin. Preferred catalysts are oxides or sulphides of Group IV metals on a surface-active material such as alumina or silica.  Fixed bed or fluid catalysts may be used.  A space velocity of about 0.3-10 weight of hydrocarbon per hour per weight of catalyst and mol. ratios of hydrogen sulphide to hydrocarbon of 0.5 to 10 are generally preferred.  The contact time is about 0.7 seconds. Catalyst regeneration by conventional methods may be resorted to when necessary.  The fused cyclic product may be recovered by condensation, oil extraction and other conventional methods.  In examples (1) ethyl benzene; (2) cumene; and (3) p-cymene are passed with hydrogen sulphide over a chromia silica-stabilized alumina catalyst to yield thionaphthene, 3-methyl thionaphthene and thionaphthene, and 3,6-dimethyl thionaphthene, 3-methyl thionaphthene and thionapthene respectively.  Picrates of 3-methyl and 3,6-dimethyl thionaphthene are described and 3-methyl thionaphthene is fused with potassium hydroxide to yield 2-ethyl thiophenol.  Specification 454,668 also is referred to.