baber/WOPTO huggingface dataset:
Patent GB-1301203-A (GB)
Title: Keyboard-actuated apparatus and attachment for deriving coded electric output signals representative of characters to be recorded
IPC: H03K17/972
Filed: 1970-03-12
Abstract: 1301203 Selective signalling DATACQ SYSTEMS CORP 12 March 1970 [14 March 1969] 11864/70 Heading G4H Key-actuated members carry coded patterns which are each sensed serially on actuation, by an optical-to-electric converter. When a typewriter key is actuated and the corresponding print arm moves to the print position, a coded pattern on the arm is sensed to provide coded electric signals identifying the character being printed which are supplied via a dial tone receiver connection, or direct wire connection, to a computer. The coded pattern is sensed photoelectrically (being of light reflecting bars, or light-transmitting marks or slots). Optical fibres or lenses may be used for conducting the light to and/or from the sensing position. Sensing is serial by bit. The coded pattern may be provided on/in a detachable inverted U-shaped member which is clipped over the print head on the end of the print arm. Two patterns may be provided on a given arm, corresponding to the upper and lower case characters carried by the arm, being at different heights so that only the appropriate one is sensed. The same pattern may be provided on both sides of the head, the two outputs from sensing the two sides being combined to compensate for lateral mispositioning of the head. The pattern may be sensed during both forward and reverse movement of the head for parity checking using a counter, or the code may incorporate parity information. Spacing of the typewriter carriage is indicated by optical sensing (via optical fibres) of a scale on the carriage, encoded signals being produced from a converter to indicate spacing. Line beginning is also indicated from the scale. Beginning of line and other format information can also be indicated by pressing respective auxiliary keys which move respective coded patterns past sensing means. Encoding of more than one key in the typewriter at a time may be prevented. Sensing may use infra-red or ultra-violet, and in the latter case the coded patterns may be of fluorescent ink or paint. Application to the keyboard of a desk calculator is mentioned.
Patent GB-1298068-A (GB)
Title: Joining superconductors
Inventor: GARRETT MICHAEL ERNEST
IPC: B23K20/233
Filed: 1969-03-06
Abstract: 1298068 Welding by pressure BRITISH OXYGEN CO Ltd 5 March 1970 [6 March 1969] 11911/69 Heading B3R [Also in Division H2] A method of joining lengths of superconductors which are in the form of filaments of superconductive material supported in a matrix of normal material, e.g. copper, comprises removing the normal material to expose end portions of the filaments and cold pressure welding the exposed portions to an intermediate member of superconductive material. The temperature is such that the crystal structure is not altered through the weld. Pressure may be applied either transiently, e.g. by an explosion or blow or for a period of time. The intermediate member of superconductive material may be forced between the ends of the superconductor filaments, e.g. by a transverse wedging movement or by screwing into a tapped recess in which the ends are positioned. Welding may be effected with slight heating or with cooling to bring the superconductor filaments to the temperature at which they become superconductive. The welding process may be followed by local annealing and the matrix material may be replaced around the welded filaments, e.g. by extrusion or clamping the welds between pieces of copper. Superconductive materials referred to include alloys of niobium, zirconium, titanium or aluminium.
Patent GB-987851-A (GB)
Title: Improvements relating to rotary-piston internal combustion engines
IPC: F01C21/04
Filed: 1964-03-20
Abstract: 987,851. Rotary-piston internal combustion engines. DAIMLER-BENZ A.G. March 20, 1964 [March 23, 1963], No. 11948/64. Heading F1F. A rotary-piston I.C. engine of trochoidal type having an oil sump 2 beneath the engine, includes an elevated reservoir 6 connected to the sump by a duct 7 controlled at its outlet by a float-actuated valve 8 and to the inner surface 3 of the engine housing 1 by a duct 5 having a pump 4 so that cool lubricating oil free from air can be delivered to the surface 3. On a lowering of the oil level in the sump the valve 8 opens so that the sump is replenished from the reservoir. The reservoir 6 is made of transparent plastic material to enable the oil level therein to be seen. So that lubricating oil is always available to the engine the duct 7 is connected to the reservoir above the duct 5. No dipstick is required. The sump 2 may be relatively small in capacity providing there is sufficient capacity in the reservoir 6 above the duct 7.
Patent GB-540196-A (GB)
Title: Improvements relating to bricks or blocks for building purposes
IPC: E04B2/04
Filed: 1940-07-20
Abstract: 540,196. Building bricks or blocks. GOSLING, A. July 20, 1940, No. 11961. [Class 87 (i)] Bricks or blocks are provided on one face with rectangular tongues or ridges which are not less in height than one third of the width of the face, the opposite face being provided with corresponding slots or depressions whereby the separation of interengaged bricks by a tilting movement is prevented. As shown the block b is furnished with a ridge bl taking into slot b<SP>2</SP> in a superposed block, and tilting of the upper block about the line x is prevented by the corner b<SP>1</SP>x of the lower block. The tongues &c. may be cubical or ridges running parallel or at right angles may be provided. Reference has been directed by the Comptroller to Specifications 18139/90, 7541/02, [both in Class 87], and 291,328, [Class 87(i)].
Patent GB-951957-A (GB)
Title: Improvements in or relating to control systems
IPC: B65G47/50
Filed: 1961-04-04
Abstract: 951,957. Endless conveyers. TELEFUNKEN PATENTVERWERTUNGS-G.m.b.H. April 4, 1961 [April 8, 1960], No. 11978/61. Heading B8A. [Also in Division G5] Items of luggage on a moving belt conveyer are sorted by manually coding the address of each item on to a magnetic belt which moves in synchronism with the conveyer, and automatically operating a selected one of 28 discharge devices when the belt passes the particular one of 28 reading heads that responds to the address code. The luggage is loaded at 3 and discharged at 28 points 41... 28, from the conveyer 1. The magnetic belt 5, which is normally much smaller than the conveyer, but is coupled to move at a synchronized scale speed, has an 8 track erasing head 7, an 8 track recording head 8, and 28 pairs of reading heads 9 1 ... 9 28  each responsive only to a particular pair of tracks. In the absence of instructions, a 25 c.p.s. signal is impressed on all 8 tracks. Operation of a keyboard 13 causes the signal to be omitted from the selected pair of tracks. Amplifiers e.g. 11, coupled to each pair of reading heads, respond only when the input signal disappears from both tracks, to operate the discharge mechanism. The full 8 track signal is restored automatically as each piece of luggage passes a check point. Alternatively the instructions may be coded on to a fully modulated belt by selected pairs of erasing heads.
Patent GB-753265-A (GB)
Title: Improvements relating to a magnetic band separator for separating magnetisable particles
IPC: B03C1/12
Filed: 1954-04-26
Abstract: 753,265. Magnetic separators. SPODIG, H. April 26, 1954, No. 12024/54. Class 117. In a belt separator the material passes through a unidirectional field between a homopolar magnetic roller and a roller of magnetic material. As shown, two homopolar magnetic rollers 1, 2 co-operate with a roller of magnetic material 3 to produce two unidirectional magnetic separating fields, the magnetic circuits being completed through the axles and supporting frame. Material is fed on to belt 13 and magnetic material separated out in the field between rollers 1, 3 is removed on the belt 10; the material then passes through the field between rollers 2, 3 and any further magnetic material is removed on belt 11.
Patent GB-1347089-A (GB)
Title: Apparatus for soldering a bus bar to an electrode in the production of an electrically-heated window
IPC: H05B3/84
Filed: 1971-04-29
Abstract: 1347089 Making electrically heated windows; soldering LIBBEY-OWENS-FORD CO 29 April 1971 [6 May 1970] 12176/71 Headings B3A and B3R Apparatus for soldering a bus-bar 45 to an elongated electrode 12 on the glass window 5 of an automobile comprises one or more soldering irons 51, a locating device 15 for supporting the bus-bar on the margin of the glass window, the device having a channel-shaped portion 18 to slide over an edge of the window, a channel 27 in one of the walls of the device for retaining the busbar and a series of openings 32 in the channel to expose the bus-bar to the iron or irons, and at least two channel shaped clamp members 34 to urge the walls of the device into contact with the glass window. Fine metal wires 11 across the window 5 are connected to electrodes 12, the wires and electrodes being formed of fired silver frit, and wire braid bus-bars 45 are soldered to the electrodes 12. The locating device 15 is a clip like body of transparent plastics material having an upper wall 16, which is flat except where formed with an upstanding interrupted hollow rib 27, an interrupted side wall 17 and a lower wall 22 with a downwardly curved edge 23 and is placed over the edge of the glass window and at least two metal clips 34 are positioned over the body 15. A wire-braid bus-bar 46 is located within the channel formed by the rib 27 and where exposed by the apertures 32 in the rib is soldered to the electrode 12 by the soldering iron or soldering irons 51 passed through the apertures 32. Solder is supplied to the juncture of the soldering iron tip and the busbar which latter has been fluxed. The pig tail like extension 44 of the bus-bar is held in clips 43 formed in the body 15 and after soldering the body 15 is removed from the window.
Patent GB-986486-A (GB)
Title: Photosensitive compositions
IPC: G03C1/675
Filed: 1961-04-05
Abstract: 986,486. Photographic materials and processes. HORIZONS Inc. April 5,1961[April 18, 1960], No. 12230/61. Heading G2C. Coloured print-out or developable-out images are produced by exposing a light-sensitive composition containing at least one arylamine or a heterocyclic nitrogen compound or its N-vinyl derivative and at least two organic halogen containing compounds which yield different free radicals on exposure to light, to illumination which matches the wavelengths at which the halogen radicals are released, the composition being dispersed in or as a film coated on synthetic resins, hydrocarbon waxes or combinations thereof. Specified heterocyclic compounds are indole, pyrrole and carbazole and their N-vinyl derivatives and the specified arylamine is diphenylamine. Preferred halogen compounds are carbon tetraiodide, carbon tetrabromide and hexachloroethane. Other halogen compounds specified are tribromoiodomethane, trichloroiodomethane, dichloro- and dibromoiodomethane, thrichloro and dichloro-bromomethane and carbon tetrachloride. Specified wavelengths are 4300-4100 A, 3000-4500Šand 2500- 3500Š. In the examples, carbon tetraiodide, carbon tetrabromide, hexachloroethene, and diphenylamine is dispersed in nitrocellulose and the composition is exposed to a sunlamp which radiates at the specific wavelengths to obtain an image in half the time required using only one halogen source. Polystyrene and indole may be used in place of nitrocellulose and diphenylamine. Alternatively, carbon tetrabromide and carbon tetraiodide with N-vinyl carbazole are dispersed in n-eicosane and n-hexahexacontane and exposed to the sunlamp through a filter opaque to wavelengths lower than 3600A which prevents photopolymerization of N-vinyl carbazole to give an image in shortor time. The N-vinyl compositions may be exposed to light and developed by exposure to heat, i.e. developable-out compositions. Specifications 916,779, 941,488 959,033, 959,034, 959,035, 959,036 and 986,487 are referred to.
Patent GB-835110-A (GB)
Title: New and improved apparatus and method for producing gas-generating charges
Inventor: WHITWORTH EDWARD
IPC: F42B33/02
Filed: 1956-04-21
Abstract: 835,110. Moulding gas-generating charges. IMPERIAL CHEMICAL INDUSTRIES Ltd. Jan. 17, 1957 [April 21, 1956], No. 12276/56. Class 87(2). Apparatus for producing pressed gas generating charges comprises a cylindrical mould 3, a mandrel 4, a pressing block 8 surrounding the mandrel, a hollow ram 9 having an outlet 12 foi connection to a source of  vacuum, and a resilient sealing ring 11 between the ram and the mould. In use the mould is loaded with a granular composition, vacuum created in the mould, and the charge pressed to the desired consistency -while maintaining the vacuum. The material pressed may be a mixture of ammonium nitrate and a waxy or elastomeric fuel.
Patent GB-379715-A (GB)
Title: Process for obtaining contrasts with regenerated cellulose by means of light
IPC: G03C1/66
Filed: 1931-04-25
Abstract: Contrasts with regenerated cellulose by means of light are obtained by treating the material with colouring agents the absorption of which is influenced by locally exposing the regenerated cellulose in the presence of a chromium compound in which chromium is more than trivalent and which changes to a trivalent chromium compound due to the said exposure, the unexposed parts being coloured.  The process may be modified so that after one exposure use is made of different colouring agents having opposite properties with respect to the exposed and unexposed parts, said parts being both coloured. Colouring agents include substances which colour the regenerated cellulose themselves or substances which, in co-operation with a substance present in the regenerated cellulose, produce a coloured compound, e.g. oxidation of colouring agents by the converted chromium compound and formation of chromates, as well as compounds passing over into a coloured compound upon some after-treatment, e.g. lead chromate which blackens upon treatment with H2S.  In examples, (1) a sheet of "cellophane" is soaked in a solution of potassium bichromate to which alcohol has been added, dried, exposed under a templet or negative and exposed to light, washed and then soaked in methylene blue whereby the unexposed parts become coloured; crystal violet, fluorescein, eosin and fuchsine may be similarly used, (2) viscose is bichromated as above and after exposure is soaked in an alkaline solution of alizarin S; the dyestuff is absorbed by the parts not struck by light; using "cellophane" transparent photographs are obtained, (3) viscose silk or cellophane is successively soaked in a solution of ammonium bichromate, dried, exposed and rinsed out, whereupon it is successively soaked in a solution of a dyestuff which is absorbed by the exposed part (e.g. alizarin dyes) and in a solution of a dyestuff which is absorbed only by the unexposed part, (4) viscose silk or cellophane is soaked in an alcoholic ammonium bichromate solution, dried and exposed, whereupon it is soaked in lead acetate solution whereby yellow lead chromate is produced at the exposed parts, the unexposed parts being then coloured by means of a dyestuff; other metal compounds, e.g. silver and mercury salts may be similarly used, (5) viscose silk or cellophane is bichromated as above, washed and soaked in a solution of resorcinol whereby the latter is oxidized to a green dyestuff by the chromium compound converted at the exposed spots, the unexposed parts being then coloured by means of a dyestuff.  Reference has been directed by the Comptroller to Specification 367,386, [Group XX].
Patent GB-327591-A (GB)
Title: Improvements in electric lamp holders
IPC: H01R33/46
Filed: 1929-04-20
Abstract: 327,591. Lundberg & Sons, Ltd., A. P., and Pegg, G. April 20, 1929. Holders.-An electric lamp holder made of insulating material is formed in two parts 11, 12 held together by the screwed ring 13. The lower portion of part 11, adapted to receive the lamp cap has a metal inset 15 embedded in its inner surface, which is cut to stand slightly forward of the bayonet slots 14. This inset is in electrical connection with the earthing wire of the supply leads. Specification 278,598, [Class 38 (i), Electric couplings &c.], is referred to.
Patent GB-1388132-A (GB)
Title: Correction apparatus for optical reading mechanism
IPC: H04N1/029
Filed: 1972-03-16
Abstract: 1388132 Optical character reader ZELLWEGER USTER Ltd 16 March 1972 [22 March 1971] 12336/72 Heading G4M In an optical character reader light reflected from a scanned character is passed through two line filters 24A, 24B arranged in respective planes whose normals intersect at an acute angle. The arrangement compensates for variations in the intensity of the reflected light due to variations in the position of the point from which the light is reflected during the scanning. Light reflected from points E1, E2 at the ends of the scanning track passes perpendicularly through respective filters 24A, 24B and is thus unattenuated. Light from a more central position, e.g. M, passes partially through both filters at an angle and is thus attenuated, the attenuation varying with the angle. Since more light is reflected from central positions intensity compensation is provided.  The arrangement is otherwise similar to that described in Specification 1,388,131 which is referred to and includes a laser and a rotating mirror providing the scanning beam. A photodetector, e.g. a photo-multiplier receives the light reflected from the character to generate an output signal.
Patent GB-1111639-A (GB)
Title: Torsion deformable packing arrangement for limited angle rotations
Inventor: NICOLAU IOAN
IPC: F16J3/04
Filed: 1967-03-16
Abstract: 1,111,639. Seals. MINISTERUL PETRO. LULUI, RUMANIA. 16 March, 1967, No. 12405/67. Heading F2B. A corrugated elastomer tube 1 for sealing and allowing limited rotation of a shaft 2 is radially supported and provided with an axial reinforcement which consists of metal or textile threads and which cannot stretch longitudinally, the threads assuming approximately a catenary shape between the radial supports by an external pressure. The radial supports may be provided by rings 4, a boss 7 and a shaft collar 8. Both ends of the tube may be clamped to bosses (7), Fig. 2b (not shown), and the middle of the tube clamped to a shaft collar (8).
Patent GB-959744-A (GB)
Title: Process for the combined production of butadiene and isoprene
Inventor: MERCIER CLAUDE
IPC: C07C11/167
Filed: 1962-03-30
Abstract: Butadiene and isoprene are obtained from a C4 hydrocarbon feed containing both normal and branched chain hydrocarbons by subjecting the feed to dehydrogenation, separating and recovering butadiene, subjecting at least part of the residue to reaction with formaldehyde to convert not more than 99% of the isobutene into isoprene and/or 4,4-dimethyl metadioxane which is subsequently converted into isoprene, recovering isoprene and separating and recycling to the dehydrogenation unreacted hydrocarbons.  The feed containing at least one of isobutane and isobutene and at least one of n-butane and n-butenes is dehydrogenated conventionally, e.g. over a mixed oxides catalyst. The effluent is preferably fractionated to separate a C4 stream and butadiene is selectively dissolved in cuprous ammonium acetate or subjected to extractive distillation with furfural. The residue is preferably distilled or subjected to solvent extraction to separate an isobutene-rich fraction. the remainder being recycled direct to the dehydrogenation. Reaction with formaldehyde is effected over an acid on a support to produce isoprene or passed into an acid containing formaldehyde polymer to form 4,4-dimethylmetadioxane which is subsequently decomposed into isoprene. Unreacted hydrocarbons are recycled.  In modifications a further C4 feed is introduced, e.g. a steam cracking product is introduced immediately before the recovery of butadiene or a catalytic cracking product after the recovery of butadiene.
Patent GB-752685-A (GB)
Title: Improvements in or relating to balanced mixers
IPC: H03D9/06
Filed: 1954-04-29
Abstract: 752,685. Microwave frequency changers. RAYTHEON MANUFACTURING CO. April 29, 1954 [Oct. 1, 1953], No. 12461/54. Class 40 (6). The .invention relates to frequency changers of the type in which two oscillations are applied respectively to two waveguides having a common wall with an aperture therein, the difference frequency being derived from two non-linear impedances located respectively in the guides. According to the invention the non-linear elements are spaced by an odd integral number of wavelengths at an unwanted output frequency of the mixer.' The two waveguides shown which form a directional coupler are fed respectively with received radar signals via a T.R. switch 17 and local oscillations from a source 25. 20 and 21 are non-linear elements and an I.F. signal is derived from transformer 34. It is explained that the local oscillatoin will mix with the intermediate frequency signal to produce the image frequency but by spacing the two non-linear elements by a quarter wavelength at this frequency the image frequency energy will be propagated only in the guide 18. The T.R. switch is parallel resonant at the received signal frequency and presents a short circuit at the image frequency. Accordingly the image frequency energy is reflected and at the non-linear impedances is converted to the I.F. frequency. A variable attenuator 27 is provided in the oscillator guide.
Patent GB-815352-A (GB)
Title: A stopper for collapsible tubes
IPC: B65D41/18
Filed: 1957-04-16
Abstract: 815,352. Stoppers. GORGET, L. F. April 16, 1957 [April 24, 1956, April 8, 1957], No. 12467/57. Class 125(3). A closure cap 1 of polythene or like material has a conical cavity in which is formed an annular rib 1a which engages a groove 3a in an intermediate piece 3 of harder plastic or metal screwed on to the neck of a collapsible tube.
Patent GB-128668-A (GB)
Title: Improvements in or relating to Internal Combustion Engines.
Inventor: GOOLD-ADAMS HENRY EDWARD FANE
IPC: F01P3/22
Filed: 1917-08-30
Abstract: 128,668. Adams, H. E. F. Goold-, and Marshall, C. F. D. Aug. 30, 1917. Respiratory appliances.-A device for maintaining the air supplied to the carburettor of an engine for aircraft at a constant predetermined pressure is used to supply air at constant pressure for respiration. A blow-off altitude valve a is controlled by compressed air supplied to a chamber b by a hand pump. Air is supplied under pressure by a fan or other means to a pipe g.