baber/WOPTO huggingface dataset:
Patent GB-777084-A (GB)
Title: Improvements in or relating to cathode ray tube oscilloscopes
IPC: G01R13/20
Filed: 1955-03-15
Abstract: 777,084. Cathode - ray oscilloscopes. LORENZO, U. DE. March 15, 1955 [April 2, 1954], No. 7452/55. Class 40(7) The cathode-ray tube 5 of an oscilloscope is supported in a magnetic shield casing 11 which is mounted at one end by a ball and socket joint 6, 3, 7 on the top of a magnetic shield casing 1 containing the other electrical components of the oscilloscope so that the screen of the tube may be viewed from any desired angle. The shield 11 fits into a hole in the ball 6 which is retained by the part-spherical seating formed by the inside surfaces of the rigidly interconnected annular members 3 and 7, and the member 3 is supported at an angle by the circular aperture of a curved extension 2 of the casing 1. The supply leads for the tube extend from the tube socket 13 through the ball 7 to terminals 14 on an insulated plate 15. The shield 11 projects at 12 beyond the screen of the tube 5 to form a light shield.
Patent GB-267961-A (GB)
Title: Improvements in frictional bodies for clutches and the like and in the method of making the same
IPC: F16D69/02
Filed: 1927-03-17
Abstract: 267,961. Kirchbach'sche Werke Kirchbach &. Co. March 17, 1926, [Convention date]. Cone and disc. - The frictional elements of clutches, brakes, &c. are made by applying plastic friction material in large masses to perforated annular carrier discs and forcing it into the pertorations. A steel disc 2, Fig. 1, is provided with circular or other holes 1. which may be undercut, and the material 3, consisting of fibres, such as asbestos, cotton, hemp, brass wires, or any mixtures thereof, or, a wover fabric, bonded by "Bakelite," synthetic resin, or other binding-agent, is applied in a continuous layer to each side of the disc, the two layers being united at the perforations by pressure, The facings are hardened under pressure by heat, and are then ground. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification, in which separate sector-shaped pieces 14, 14a, Figs. 4 and 7 (Cancelled), are so applied to both sides of an annular disc 11 as to form practically coutinuous surfaces. The disc 11 has groups of round-edged holes 12, 13, the larger central hole 13 of each group receiving a long projection 16 on the piece 14, while the holes 12 receive short projections 15, 15<a> on the pieces 14, 14<a> respectively. Under pressure, the projections 15, 15<a> are united midway in the holes 12, the projection 16 being received in a bore of the piece 14a. Before application of the facings, they and the carrier disc are preferably coated with the binding-agent. Instead of passing to the middle of the thickness of the disc, the projections 15, 15<a> may alternately pass completely through the disc. This subject-matter does not appear in the Specification as accepted.
Patent GB-1240675-A (GB)
Title: Improvements in data printing apparatus
Inventor: MASON FREDERICK PERCIVAL
IPC: B41J2/43
Filed: 1968-02-15
Abstract: 1,240,675. Selective printing. CREED & CO. Ltd. 12 Feb., 1969 [15 Feb., 1968], No. 7512/68. Heading B6F. A printing machine in which mosaic characters are magnetically or electrostatically recorded on an endless web or drum 1 from which they are e.g. offset printed to a permanent record, comprises at least two groups of recording heads A, B used alternatively for alternate lines so that after the surface 1 has received the characters in an annular line or part line A it moves over to the third annular line or part line 6. During the period of movement the recording heads B are recording the second line. The signals which energize the recording heads B for recording are delayed by the time it takes for the surface 1 to travel between lines 5, 9 on the cylinder to avoid an uneven commencing line.
Patent GB-774529-A (GB)
Title: Preparation of divalent heavy metal biscyclopentadienides
IPC: C07F17/00
Filed: 1954-03-15
Abstract: Divalent heavy metal bis-cyclopentadienyls (other than those of nickel and iron) are prepared by reacting an alkali or alkaline-earth metal cyclopentadienyl with the desired anhydrous heavy metal salt in the presence of liquid ammonia or an N-organic base having an acid dissociation constant less than 1 X 10-16.  Reaction may take place at a temperature between - 80 DEG  and + 200 DEG  C.  The cyclopentadiene may be substituted with 1 to 5 alkyl groups if desired.  Suitable metal compounds are the halides, sulphates, nitrates, acetates, acetonylacetates, formates and propionates. Conveniently the alkali or alkaline earth metal cyclopentadienyl may be prepared in the presence of liquid ammonia or of the N-organic base.  The final reaction product may be sublimed or extracted from the reaction mixture by means of a hydrocarbon solvent such as petroleum hexanes or toluene.  In an example anhydrous cobaltous chloride is reacted with sodium cyclopentadienyl in liquid ammonia (a solid CO2-acetone bath being used to maintain the low temperature) to yield cobalt bis-cyclopentadienyl.  Other examples describe the preparation of tin, lead and copper bis-cyclopentadienyls.
Patent GB-933308-A (GB)
Title: Improvements in or relating to electrical connections
Inventor: TAYLOR HERBERT WILLOTT
IPC: H01R4/36
Filed: 1959-03-04
Abstract: 933,308. Electrical connections. BOWTHORPE ELECTRIC CO. Ltd., and H. W. TAYLOR. June 3, 1960 [March 4, 1959], No. 7522/59. Class 38 (1). One or more, but not all, of the strands of a multi-strand electrical conductor 12 are connected to another conductor 22 or its strands. Specifications 933,309 and 933,310 are referred to.
Patent GB-994680-A (GB)
Title: Improved electroluminescent device
Inventor: RANBY PETER WHITTEN
IPC: H05B33/14
Filed: 1963-02-25
Abstract: A flexible electroluminescent device, e.g. as described in Specification 970,146, contains an electroluminescent material of zinc sulphide, zinc selenide, zinc sulpho-selenide or zinc-cadmium sulphide, mixed with or in contact with 0.25-30 w/o, preferably 5-15 w/o, of boric acid or boric oxide.  This gives improved maintenance of light output.
Patent GB-682104-A (GB)
Title: Improvements relating to movements particularly for toy or educational clocks
Inventor: DARBY CHARLES HERBERT
IPC: G04B11/04
Filed: 1950-03-27
Abstract: 682,104. Toy clocks etc.; teaching time. PAGE SENSIBLE TOYS, Ltd., H. March 27, 1951. [March 27, 1950] No. 7583/50. Classes 132 (iii) and 146 (ii). A toy clock comprises a pivoted arm 20 having at one end a pawl 21 which engages teeth 18 of a ratchet wheel 16, manual depression of the end 25 of arm 20 thus causing the minute hand 12 to move one step. Two deep teeth 18a are formed diametrically opposite on the wheel, and when teeth 18a are engaged, pawl 21 is permitted also to engage a further ratchet wheel 17 so that depression of the arm 20 then causes both wheels to turn one step. Ratchet wheel 16 is mounted on a minute hand spindle 13 and a sleeve 15 turning on spindle 13 carries ratchet 17 and the hour hand. Pawls 23, 24 prevent reverse movement of the ratchet wheels and a slot 22 in the clock casing acts as stop means for the lever 20. The ratchet wheels may have more than 24 teeth, e.g. 48 teeth, four deep teeth 18a then being provided. The toy may alternatively be in the form of a watch. The Provisional Specification specifies a pendulum for attachment to the operating lever.
Patent GB-1417061-A (GB)
Title: Tyre vulcanizing press
IPC: B29C33/02
Filed: 1973-02-16
Abstract: 1417061 Moulding tyres VREDESTEIN ENSCHEDE BV 16 Feb 1973 [21 Feb 1972] 7619/73 Heading B5A A tyre vulcanizing press of the kind in which a radially expansible bag 4 is, in its non- operative position, accommodated in a cylindrical container 3 depending centrally from a tyre moulding cavity 2, is characterized in that a sleeve 7 with a flange 8 is replaceably connected to the upper end of the container; the flange defines the container rim, and the bag mouth overlies the flange and rim and is clamped between the container and that part of the mould defining the lower tyre bead seating surface 6; the arrangement is such that there is a small gap a between the bag wall and the radial inner extremity of the said surface so that, in operation, the bag first contacts the lower bead area of the tyre causing it to be seated before the bag contacts other tyre portions. The bag is forced into the tyre interior by steam fed in to the container base. Radial grooves 18, Fig. 4, may be provided in the flange to promote steam flow to the flange face 12; such flow may be assisted by a plate 16. Alternatively, in addition to a steam supply at 11, Fig. 6, a chamber 19 is supplied with steam through an inlet 20.
Patent GB-1280438-A (GB)
Title: Methanol synthesis process
Inventor: KARAFIAN MAXIM
IPC: C07C29/60
Filed: 1971-03-23
Abstract: 1280438 Methanol synthesis and purification CHEMICAL CONSTRUCTION CORP 23 March 1971 7667/71 Heading C2C The invention comprises a process for the catalytic synthesis of methanol wherein the synthesis gas, prior to conversion to methanol, is cooled in at least one stage and the product gas, after methanol synthesis, is cooled and the separated methanol is distilled in at least one column having a lower reboiler, the latter being heated by direct or indirect (in which the heat is transferred by a circulating fluid) heat exchange with the feed gases or product gas. In a preferred embodiment, the methanol is distilled in a three column system, the bottom of the first and third columns being heated by direct heat exchange with the hot synthesis gases derived from the steam reformation of a fluid hydrocarbon and the bottom of the second column being heated by indirect heat exchange with the product gases from the methanol synthesis step.
Patent GB-100597-A (GB)
Title: Improvements in the Process and Apparatus for the Manufacture of Sulphuric Acid.
Inventor: BASSET LUCIEN PAUL
IPC: C01B17/765
Filed: 1916-05-31
Abstract: 100,597. Basset, L. P. May 31, 1915, [Convention date]. Cements, Portland, compositions and processes for making. - In the catalytic production of sulphuric acid, the collection of the sulphurous acid which escapes conversion by the catalyst, is effected in a cement paste of clay, gypsum, and calcium carbonate or clay and calcium carbonate, which gives it up again in the cement furnace. Usually the clay and gypsum contain enough calcium carbonate to fix the sulphurous acid, but if this is not the case calcium carbonate is added. Sulphurous acid gases from a cement furnace a pass through a dust chamber b to a tower c where much of their steam is removed by washing with cold water circulated by a pump d through a filter e and cooler f. The gases pass thence through pipes g where they are heated, to the catalytic chamber h. The gases leave the chamber h by a pipe and pass through a cooler k and a tower l in which the sulphur trioxide is removed by water or sulphuric acid and the sulphurous acid remaining is absorbed in a tower m having baffles m<1> over which a stream of cement paste descends, the paste being passed by a pump n to the furnace a.
Patent GB-565939-A (GB)
Title: Improvements in and relating to rivet extractors
IPC: B25B27/22
Filed: 1943-05-19
Abstract: 565,939. Rivet extractors. PYE, J. R. May 19, 1943, No. 7928. [Class 61 (iii)] A chain rivet extractor comprises a base 10 on which the chain can lie with an elongated aperture 14 in line with the rivet 23 and means for centring the rivet, such as a fixed jaw 11 adapted to engage a roller, 17 and adjustable jaw 13 secured by a screw 15 and bolt 15a. The base may be provided with a bracket 18 and extracting screw 20 and punch 21.
Patent GB-711187-A (GB)
Title: Improvements in or relating to chewing gum
IPC: A23G4/00
Filed: 1952-03-29
Abstract: Chewing gum is made by drying and grinding tobacco to a fine powder and incorporating the powder in a gum base, e.g. chicle, together with pepsin and a filling agent, e.g. kola powder.  A sweetener may be added, e.g. saccharine.  The composition may be covered with a hard sweetener.  The ingredients comprise by weight 70-80 per cent of gum base, 10 to 20 per cent filling agent, 2 to 6 per cent of the dried powder tobacco, 1.5 to 2 per cent. of pepsin, and 0.5 to 1 per cent of sweetener.  The tobacco is dried by toasting at 300 DEG F for a short period, e.g. 5 minutes.
Patent GB-910410-A (GB)
Title: Photoelectric exposure meter and reflex viewfinder for use with a photographic camera
IPC: G03B7/0997
Filed: 1959-03-09
Abstract: 910,410. Exposure meters in reflex viewfinders AGFA A.G. March 9, 1959 [March 21, 1958], No. 8127/59. Class 98 (1). In a combined photo-electric exposure meter and reflex viewfinder for use with a photographic camera and comprising an optical system for producing an upright viewfinder image in combination with an objective and a reflex mirror, the photo-cell of the exposure meter is located behind a normally reflecting surface of the said system and either the said surface is rendered permanently partly light transmitting or means are provided for temporarily rendering the said surface partially or completely light transmitting. As shown (Fig. 1), where a pentagonal prism 5a in a viewfinder housing 8 a  is arranged above a single lens reflex camera, the prism surface 9 is semi-silvered and has placed therebehind the photo-cell 10a of an exposure meter (not shown). In a first modification (Figs. 2-4, not shown) in which a ridged prism is used and a matt disc or matted lower surface of said prism optionally replaces the clear lens 4, both the surface 9 and a movable glass plate positioned between and parallel to surface 9 and cell 10a have alternate horizontal strips which are completely silvered or left clear, by which arrangement it is possible to present either a completely reflecting surface (when using the viewfinder) or a partially transmitting surface (when using the exposure meter). To facilitate the displacement of the glass plate, a frame member supporting said plate movable on two pin-and-slot guides is provided, spring detent means and a hand-knob being provided for locating said plate in either of its two operative positions. In a second modification (Figs. 5 and 6) provided with a ridged prism 5a, the photo-cell 10c is mounted behind a glass block 23, the angled surfaces 23a, 23b of which exactly fit the ridged surface of the prism 5c. The photo-cell and glass block are mounted in a frame 22 which is displaceable in the direction of the arrow A by pressing a knob 24 against the loading of a spring 27. When using the viewfinder, the block 23 is in its raised position (Fig. 5), but when it is desired to use the exposure meter, knob 24 is depressed, reflections at the ridged surface of the prism are destroyed, and light rays pass through to the photo-cell 10c. In further modifications, the prism is replaced by two plane mirrors, and the photocell is either placed behind one which is semisilvered (Fig. 7, not shown) or behind two glass plates, each of which has alternate silvered and plain strips for the purpose described above.
Patent GB-308587-A (GB)
Title: Improvements in or relating to flexible sheet material
Filed: 1929-03-13
Abstract: 308,587. British Celanese, Ltd., (Assignees of Dreyfus, C.). March 23, 1928, [Convention date]. Addition to 307,462. Single coatings; multiple superposed coatings; special fabric bases. - In transparent or translucent flexible sheet material of the kind described in the parent Specification a resin of the polymerized vinyl compound type is incorporated with the cellulose acetate or other cellulose derivative. The resin may be applied as a preliminary coating, followed by a coating of cellulose acetate or other cellulose derivative, or a single coating comprising both materials may be used. The vinyl compounds may be polymerized after their addition to the coating composition, and the polymerization may be partly effected before application to the base material and completed subsequently. Preferably the vinyl compounds are partially polymerized before their addition to the coating composition. Vinyl acetate is the preferred compound, but other vinyl compounds, such as the compound formed by dehalogenating a vinyl halide by means of zinc dust, vinyl propionate, vinyl phosphate and vinyl chloride, may be used. The compound may be polymerized by sunlight or by ultra violet light, catalytic agents such as uranium salts and carbon tetrachloride may be used, and heat may be employed to assist polymerization. The openwork foundation material may be any of those referred to in the parent Specification. The cellulose derivatives may be any of those mentioned in the parent Specification, and plastifiers and natural or semisynthetic resins may be added. Examples are as follows : (1) An iron or steel screen of 14 meshes per inch is dipped in solutions containing either, A. 10 parts of polymerized vinyl acetate and 100 parts of low boiling solvent; or, B. 8 parts of polymerized vinyl acetate, 2 parts of diethyl phthalate, 100 parts of low boiling solvent, 5 parts of ethyl lactate. The solution is allowed to drain off so that the meshes are not filled in, the screen is then dried and exposed to light and heat so that the vinyl compounds are polymerized to a sufficient extent to be insoluble in the solvents used in the second coating. The second composition may be, A. 10 parts of cellulose acetate in 100 parts of acetone, or, B. 5 parts of cellulose acetate, 50 parts of acetone, 25 parts of alcohol, 25 parts of benzene, and 2 parts of ethyl lactate, or, C. 15 parts of cellulose acetate, 1 part of diethyl phthalate, 1 part of tricresyl phosphate, 1 part of triphenyl phosphate, 1 part of triacetin, 100 parts of acetone. The meshes are closed by the second solution. (2). One coating, comprising for example, A. 10 parts of cellulose acetate, 2 parts of polymerized vinyl acetate resin, and 100 parts of acetone, or, B. 10 parts of cellulose acetate, 5 parts of polymerized vinyl acetate resin, 3 parts of diethyl phthalate, 100 parts of acetone, and 2 parts of ethyl lactate, is applied to completely close the meshes of the screen. Pigments, dyes, powdered metal, &c., may be added to the coating compositions.
Patent GB-609853-A (GB)
Title: Improved lens mounts for photographic cameras with coupled range-finder
IPC: G03B13/20
Filed: 1946-03-15
Abstract: 609,853. Photographic cameras. MONTGOMERY, G. B. March 15, 1946, No. 8201. [Classes 97 (i) and 98 (i)] A focusing lens mount coupled with the range-finder adjustment of a photographic camera comprises two coaxial tubes which are relatively movable and screwed into an annular body for engagement with the camera, one tube carrying an objective lens while the other engages the camera range-finding mechanism, a pin projecting from the wall of one tube engaging a helical slot in the wall of the other tube, the pitch of the helix and the difference in pitch between the screw threads in the annular body being such that, upon rotation of the lens tube for focusing, the other tube moves to an extent sufficient to adjust the range-finder mechanism to give the range corresponding to the actual focal length; of the objective in use. As shown, the annular member is threaded into the camera body 3 and has internal screw-threads which respectively co-operate with external screw-threads of different pitches on a tube 4, which carries an objective 5, and on a coaxial tube 6, which engages a roller 8 to adjust the camera rangefinding mechanism. The tube 4 has a pin 9 on its surface which rides in a helical slot 10 in the tube 6, the pitch of the helix being such as to modify the extent of the relative movement between tubes 4 and 6 and thereby compensate for the amount by which the actual focal length of lens 5 differs from the nominal focal length thereof.
Patent GB-916167-A (GB)
Title: Improvements relating to the cleaning of rolls in roller-coating apparatus
IPC: C23C2/36
Filed: 1959-03-10
Abstract: 916,167. Turning coating rolls. INLAND STEEL CO. March 10, 1959 [March 17, 1958], No. 8209/59. Class 83 (3). Apparatus-for turning or trimming coating rolls, such as for galvanizing, comprises translating means rotatably journalled between frame members, track means extending between support members and a carriage assembly comprising a cutting tool adapted to ride on the track means. The coating rolls 10, Figs. 1 and 2, are supported in vertical frame members 14 connected to an overhead beam 16. A pair of feed-screws 18 are rotatably supported between the frame members 14 and driven by a reversible motor 58. A pair of cross-heads are oscillatably carried at each end of a feed screw and a pair of guide rails 62 extend between each pair of cross-heads. The latter each carry two legs 22, 26, Fig. 2, with bearing pads at their ends to engage a boss on the roll-ends and spring- pressed together so that they act to centralize the guide rails relative to the roll axes. A toolcarriage 60 is guided by rollers 66 to run on each pair of rail tracks and supports an adjustable arm 68 which carries a trimming-tool 70. The carriage 60 is automatically reversed at the end of the stroke by switches 59, Fig. 1.
Patent GB-847867-A (GB)
Title: Air blast electric circuit breaker
IPC: H01H35/24
Filed: 1958-03-14
Abstract: 847,867. Air-blast switches. ALLMANNA SVENSKA ELEKTRISKA A.B. March 14, 1958 [March 15, 1957], No. 8214/58. Class 38 (5). Should an arc persist in an air-blast switch, the contacts are automatically reclosed by means of a piston 16 which is moved against the bias of a spring 17, by the resulting increase in pressure in the compressedair container 1, to push back a catch 19 and release a contact-carrying rod 20. The downward movement of the rod 20 under the bias of a spring 21 closes contacts 10, 22 to complete a circuit for the " closing " solenoid of a control valve, Fig. 1 (not shown) and opens contacts 11, 23 to open the circuit for the " opening " solenoid of the valve.
Patent GB-1129281-A (GB)
Title: Improvements in or relating to the treatment of hydrocarbon feedstocks
Inventor: HEBDEN DENNIS
Filed: 1965-02-25
Abstract: 1,129,281. Making combustible gas. GAS COUNCIL. 25 Feb., 1966 [25 Feb., 1965], No. 8219/65. Heading C5E. In a method of catalytically steam-reforming a hydrocarbon feedstock in vaporized form in a single stage, the catalyst being maintained at a temperature of at least 500‹ C., a proportion of the product gases are recycled and are preheated before or after being mixed with the hydrocarbon vapour and steam. The feedstock which, with the steam, may be separately preheated may be methane, propane, butane or a light petroleum distillate. Any recirculation ratio may be used, but when the recycled gases are added to a feedstock containing hydrocarbons higher than methane and before the preheating stage, the ratio should be high, e.g. 10: 1. Where separate preheating stages are carried out, the feedstock and steam should not exceed 600‹ C., but the recycled gases may be heated to 50‹ to 100‹ C. above the temperature (600‹ to 700‹ C.) at which they left the catalyst. A specific example is described.