baber/WOPTO huggingface dataset:
Patent GB-936609-A (GB)
Title: Improvements in or relating to stabilized photographic physical developers
IPC: G03C5/58
Filed: 1959-10-08
Abstract: 936,609. Photographic physical development. PHILIPS' GLOEILAMPENFABRIEKEN. N.V. Oct. 8, 1959 [Oct. 11, 1958], No. 34155/59. Drawings to Specification. Class 98 (2). A metal germ image which has been obtained from a photo-sensitive compound either (a) directly by exposure to light or (b) by exposure followed by an after-treatment, is developed in a physical developer containing an ionic surfaceactive agent as stabilizer. The metal germ image may be formed directly by exposure of a photographic silver halide emulsion, or by exposure of a light-sensitive diazonium compound, diazosulphonate or diazocyanide, followed by after-treatment, e.g. with an aqueous solution of mercurous nitrate and nitric acid, or with an aqueous solution of silver nitrate, acetic acid and sodium acetate. The surface-active agent may be cationic, anionic or amphoteric. Compounds specified are salts of primary alkylamines having an alkyl group of at least 8 carbon atoms, the methyl sulphate of polyvinyl imidazole and various compounds mentioned by trade names which compounds are salts of primary or tertiary amines, salts of pyridine, morpholine or iminazoline, alkyl-aryl sulphonates or sulphates of aliphatic alcohols. The physical developers may contain, as reducing agent, hydroquinone, pyrocateohol, pyrogallol, gallic acid, ascorbic acid, o- or p-aminophenol, metal, N-p-hydroxyphenyl-glycine, o- or pphenylene diamine, N,N-diethyl-p-phenylene diamine, 1-phenyl-3-pyrazolidone or inorganic compounds containing ferrous, titanous or vanadous ions which may be present as complexes, e.g. the ferrous-oxalate complex. The physical developers may contain water-soluble salts of silver, mercury or gold, and they may be in acid, alkaline or neutral solution, for which purpose citric acid, nitric acid, lactic acid, oxalic acid, sodium sulphite or borax may be added. In certain of the examples the developer contains also potassium thiocyanate. In Example XVII, a photosensitive material sensitized with an aqueous solution containing mercuric chloride, ferric ammonium oxalate and ammonium oxalate is used. Specifications 690,094, 690,212, 717,915 and 737,874 are referred to.
Patent GB-836611-A (GB)
Title: Improvements in or relating to starting and operating electric discharge lamps
Inventor: CATES JULIUS
IPC: H05B41/18
Filed: 1957-11-01
Abstract: 836,611. Discharge lamp circuits. GENERAL ELECTRIC CO. Ltd. Oct. 17, 1958 [Nov. 1, 1957], No. 34171/57. Class 38 (4).. A starting circuit for operating two or more discharge lamps 1 from a D.C. supply comprises a relay 5, 8, 10 whose contacts 5 close the lamp heater circuit through a ballast resistor 4 and whose contacts 8 shunt a capacitor 13 in series with an air-gapped inductor 7 and a lamp 6, the opening of contacts 8 causing a high-voltage pulse to be applied to the lamp starting conductors 9. A reversing switch 12 connects the circuit to the supply and a further switch 11 controls the coil 10 of the relay which may be normally operated or normally released. Ballast resistor 4 may comprise a tungsten filament lamp. The starting conductors 9 consist of four lengths of stranded insulated wire spaced about # inch apart and ¢ inch away from the lamp. Constructional details of the inductor are described in the Specification.
Patent GB-1313809-A (GB)
Title: Process for the production of urea condensation products
IPC: C07C273/18
Filed: 1971-07-21
Abstract: 1313809 Biuret AE & CI Ltd 21 July 1971 [21 July 1970] 34184/71 Heading C2C Condensation products of urea (e.g. biuret) are produced by introducing a urea melt into the reaction zone of an elongate tubular reactor at sub-atmospheric pressure, maintaining the reactor wall in the reaction zone at a temperature of 110-250‹ C., forming a film of the melt on the wall, causing the film to flow along the wall, collecting the resulting reaction mass consisting of condensation products and unreacted urea, and cooling the mass.
Patent GB-174580-A (GB)
Title: Improvements in a process for hardening steel alloys
IPC: C23C8/00
Filed: 1921-12-20
Abstract: 174,580. Krupp Akt.-Ges., F. Jan. 27, 1921, [Convention date]. Alloys.-Steel alloys and, in particular, those containing aluminium, chromium manganese and silicon are subjected to nitrogenization at temperatures below 580‹ C. By heating in a current of ammonia at 500‹ C., the Brinell hardness of a steel containing 0.39 per cent of carbon and 2.88 per cent of chromium is increased from 282 to 471. By similar treatment, the Brinell hardness of a steel containing 0.44 per cent of carbon. 1.07 per cent of manganese, and 1.93 per cent of chromium is increased from 298 to 500. Specification 19493/06, [Class 72, Iron &c.] is referred to.
Patent GB-325548-A (GB)
Title: Improvements relating to electric furnaces
IPC: F27B3/12
Filed: 1928-11-21
Abstract: 325,548. Wild-Barfield Electric Furnaces, Ltd., and Wild, L. W. Nov. 21, 1928. Resistance furnaces.-In an electric furnace in which the roof bricks A are supported by ties B, the resistance elements F are supported in channels E in the bricks.
Patent GB-421859-A (GB)
Title: Improvements in electric switches particularly for lamp-holders
IPC: H01R33/955
Filed: 1933-12-06
Abstract: 421,859. Snap-action switches; electriclamp holders. GARDE, H., 66, Mark Lane, London. Dec. 6, 1933, No. 34367. [Class 38 (v)] [See also Group XI] A switch adapted for use in a lampholder has an insulating operating bar 17 sliding in a trans. verse slot in the insulating body 10. The upper side of the bar 17 has a recess having two pairs of shoulders on its lower side, one shoulder of each pair being provided with a contact member 18 wrapped round the bar. Above the bar 17 are two fixed contacts 19 each made from a T-shaped strip secured by screws 22 passing through the head of the T and having the shank doubled round to engage the contacts 18. Below the bar 17 are arranged U-shaped contact strips 27 urged against the bar by springs 26, the lower ends of which engage screws 14 which hold in position the spring plungers 15 for engaging a lamp. Movement of the bar to the left causes the contacts 19 to engage insulating shoulders on the bar to break circuit and the movement is limited by the engagement of lugs 28 with a Z-shaped insulating plate 29 held in position by the screws 22. Specifications 295,764 and 295,765, [both in Class 38 (v)], and 362,842 are referred to.
Patent GB-1010071-A (GB)
Title: Improvements relating to x-ray fluorescence analysis
Inventor: DOTHIE HAROLD JAMES
IPC: G01N23/223
Filed: 1962-09-02
Abstract: 1,010,071. X-ray analysis. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 4, 1963 [Sept. 7, 1962], No. 34388/62. Heading H5R. A method of analysing a solid, powder or liquid specimen by a non-dispersive X-ray fluorescent technique, comprises irradiating the specimen to emit X-rays and making successive measurements of the intensity of the emitted X-rays, each through a particular one of two or more filters, each filter containing an element so chosen that the absoption edge of one of said filters lies on the low wavelength side and the absorption edge of another of said filters lies on the high wavelength side of the characteristic X-radiation emitted by a given element in the specimen. A solid specimen 10 is carried on a supporting flange 6 in an aluminium-lined housing 5 and the radio-active source 11, e.g. a tritium bremsstrahlung source, on a plastics strip 16 on a flange 7, so that the X-rays produced from the specimen are directed up through the filter 12 into a Geiger-Muller counter 13. The number of counts is measured for filters composed of different elements and the ratio R of counts with and without the specimen in position is obtained for each filter. The Specification defines how X-rays from an element of a particular atomic number Z can pass more readily through a filter composed of an element of an atomic number. Z-n, near to this value, than through a filter composed of an element of number Z - (n + 1), where n is an integer having a value according to a table given in the Specification. Using this principle, calibration graphs of the values of the ratio R for each filter element can indicate the composition of the specimen. In the quantitative investigation of a copper specimen and a yellow brass specimen, vanadium, manganese, iron, cobalt, nickel and copper foil filters are used. Count values without the specimen represent X-rays scattered within the housing only. In the investigation of liquids, the liquid is contained in a tray placed on the floor 14 of the housing 5. In the determination of a calibration curve for the concentration of manganese in manganese dichloride solution, the ratio of counts with and without the specimen present is obtained, using a manganese and a vanadium or chromium filter, for solutions of different concentrations. The method may be used in the analysis of plant ash and of copper in aluminium alloys.
Patent GB-603629-A (GB)
Title: Arrangement for straining paper-pulp and similar suspended matters
IPC: D21D5/06
Filed: 1945-12-19
Abstract: 603,629. Preparation of paper pulp. TAMMERFORS LINNE - OCH JERNMANUFAKTUR AKTIEBOLAG. Dec. 19, 1945, No. 34468. Convention date, March 18, 1944. [Class 96] [Also in Group I] Paper pulp &c. supplied at 8 passes to a central chamber 9, through outlets 10 which are so directed as to give rotary movement to the pulp &c. in a compartment 11, the outer wall of which is a sifting cylinder 1 which has spring suspension 2 and is vibrated at 6. The coarser pulp &c. overflows to an outlet 14 aided by jets &c. 18, and the finer pulp through a series of rotary valves or gates, controlled at 22, in a cylinder 20 to one or more outlets 13. The rotary movement in the compartment 11 can be aided by dilution water from jet pipes 17.
Patent GB-1484958-A (GB)
Title: Magnetic recording tapes
IPC: C09D7/12
Filed: 1975-08-19
Abstract: 1484958 Magnetic recording tape SONY CORP 19 Aug 1975 [26 Aug 1974] 34502/75 Heading B2E A magnetic recording tape has a non-magnetisable base and an inner coating of a homogeneous dispersion of ferromagnetic iron oxide powder in a resinous binder, of thickness 7-12 microns, a coercive force of 260-320 oersteds, a saturation residual flex density of 1150-1600 gauss and an outer layer of thickness 1-5 microns of a homogeneous dispersion of ferromagnetic powder in a resinous binder, having a coercive force of 380-500 oersteds, and having a saturation residual flex density of 1200-1300 gauss, the ferromagnetic powders in the outer layer including at least ferromagnetic chromium dioxide powder having a coercive force of 450-600 oersteds and a ferromagnetic iron oxide powder having a coercive force of 320-450 oersteds, the weight ratio of the ferromagnetic chromium dioxide and ferromagnetic iron oxide in the outer layer being in the range 1:4 to 4:1.
Patent GB-391396-A (GB)
Title: Improvements in or relating to tuft yarn threading machines and to thread engaging elements therefor
IPC: D03D39/02
Filed: 1932-12-06
Abstract: 391,396. Threading tuft-yarn tubes. SPIERS, Ltd., W., XL Works, Walnut Street, Leicester, and PORTER, D., 64, Segrave Road, Sileby, near Loughborough. Dec. 6, 1932, No. 34552. [Class 142 (ii).] To prevent the yarns from being jammed between the sides of the needles and the tuft-yarn tubes, each needle is reduced in thickness at its thread-engaging extremity as compared with the shank 1 of the needle. In the form shown in Fig. 2, the hook of the needle has grooves 4 on its sides. In a modification, the thickness of the upper end of the hook is reduced by swaging to form parallel sides, or sides tapering towards the point of the needle. In some cases, the thickness of the needle is reduced gradually from the point where the neck of the needle merges into the stem to the outside top of the hook. In the form shown in Fig. 10, a reduced part of the strip 1 is swaged to produce a rounded portion 12 which is flattened to the shape shown in Fig. 11 and is bent to form the hook 2c.
Patent GB-1370864-A (GB)
Title: Method and apparatus for making ceramic shell moulds
IPC: B22C9/04
Filed: 1972-07-25
Abstract: 1370864 Investment casting apparatus PRECISION METALSMITHS Inc 25 July 1972 [16 Aug 1971] 34721/72 Heading B5A Apparatus for investment casting multiple shell moulds comprises an array of pattern set-ups 11 mounted for rotation as a group about an axis 13 transverse to the vertical and radially spaced from this axis, e.g. on rods 24 in slots in end discs 12 so that when the array is rotated by a motor 39, each set-up in turn will dip into a refractory slurry 35. The assembly is preferably provided with a housing cover 45 sealed at 46 to the tank 36 and having an outlet 48 to apply a vacuum. In an alternative embodiment (Fig. 4 to 6, not shown) a set of gears and pinions is mounted on the end of the shaft 13 to rotate the set-up shafts 24 individually, the array then being rotated in step-wise fashion to bring each set-up in turn into the slurry tank, where it is then rotated about its own axis by the gearing which is driven by a separate motor. In this embodiment the set-up cylinder is only partially immersed in the slurry. In both embodiments the individual patterns are mounted on corrugated cardboard sleeves on wax or wax-coated cylinders around the reds 24 (Figs. 1 and 2, not shown). The central shaft 13 is located in a spring-loaded bearing 41 so that the array may readily be removed. Typically the patterns are coated with a slurry of zirconium silicate and fused silica in a colloidal silica sol binder with small amounts of an organic film former, a wetting agent and a defoaming agent; they are then stuccoed with coarse refractory material by rotating the set-ups to pass through an airfluidized bed; then forced-air-dried and additional coatings applied as desired.
Patent GB-646175-A (GB)
Title: Improvements in agglomerating presses
IPC: B30B11/16
Filed: 1947-12-30
Abstract: 646,175. Rotary briqueting presses. SAHUT, COUREUR & CIE. Dec. 30, 1947, No. 34752. Convention date, Oct. 4, 1943. [Class 87 (ii)] A rotary agglomerating press is of the type comprising wheels with annular grooves 2, Fig. 1, of which the flanks 1, diverge outwardly, and which alternate with annular ribs of the same cross-section, the ribs on each wheel co-operating with the grooves on the other wheel, the ribs on at least one of the wheels having transverse notches or recesses 3, Fig. 2. The recesses 3, Fig. 3, have bottoms which are rounded in the plane of the wheel, and the walls of the notches or recesses 3 are given a concave curvature 3<SP>1</SP> transversely to the plane of the wheel. Due to this transverse curvature the adjacent faces of the agglomerates obtained, Figs. 4, 5 and 6 (not shown), form between them dihedral angles of approximately 90 degrees so that the edges formed are not fragile. The recesses may be provided alternately on the two wheels with a corresponding spacing between the recesses on each wheel, and may have a maximum depth smaller than, equal to, or greater than the projection of the ribs. The recesses may also be asymmetrical in shape, their deepest points being displaced towards one or the other of the ends.
Patent GB-195167-A (GB)
Title: An epicyclic variable speed and reversing gear, for turbines, factory plant, or motor cars, or other machinery
IPC: F16H3/66
Filed: 1921-12-28
Abstract: 195,167. Johnston, R. Dec. 28, 1921. Variable-speed epicyclic gearing comprises bevel gearing and a special clutch for obtaining a solid drive. Planet gears 5, 6, 7 upon a spider 8 fast upon the driven shaft 3 mesh with a sun gear 1 on the driving-shaft 2 and with sun gears 12, 15, 18, 21, 24 which are adapted to be enclosed alternatively by suitable brakes 30. The clutch comprises a band 25 of spring steel, which expands into contact with two brake-drums 13, 16, simultaneously, so as to lock the parts together. It may be supported by springs 33 from a loose disc 19. The clutch is thrown out of action by compressing it between a pair of fixed arms 26 which can be drawn together by a screw 27. The extended arms of the spider 8 carry a brake drum 9.
Patent GB-173515-A (GB)
Title: Galvanic cell
IPC: H01M6/04
Filed: 1921-12-28
Abstract: 173,515. Heil, A. Dec. 28, 1921. Electrodes; electrolytes.- An element which can be used as a primary or secondary battery consists of a lead container a containing a copper gauze cage b which forms the soluble electrode and a carbon rod d surrounded by manganese depolarizer c. The electrode b may also consist of copperplated lead or copper-plated carbon. The depolarizer may consist of ordinary manganese dioxide or it may be prepared chemically and may be hydrated. The electrolyte is dilute sulphuric acid which may contain salts such as sulphate of copper or manganese in solution. The cell is closed hermetically by a lid f soldered to the casing a. The carbon electrode d stands on an insulating plate h.
Patent GB-852445-A (GB)
Title: Improvements in or relating to an electrical impulse current installation
IPC: H03K3/537
Filed: 1958-10-30
Abstract: 852,445. Spark gaps. SIEMENS-SCHUCKERTWERKE A.G. Oct. 30, 1958 [Nov. 8, 1957], No. 34873/58. Class 39)1). [Also in Group XXXV] In an impulse current installation whereby a plurality of parallel connected capacitors 2 are discharged across an enclosed spark gap 1, to reduce the inductance of the connecting leads, the capacitors are arranged concentrically around the gap and are connected to it by means of substantially planar collector electrodes 3, 4. In the Figure one capacitor lead is connected through an opening 10 in the other electrode. In another arrangement the capacitors are connected by separate leads to the edges of the electrodes which may be dimentioned to withstand the forces exerted by the discharge currents, and which may be split up into individual circular segments, or constructed from perforated sheets or wire netting. Alternatively the electrodes may be stuck or sprayed on to the dielectric 9. The latter may alternatively be of liquid form.
Patent GB-466225-A (GB)
Title: Improvements relating to seats, chairs, settees, and the like
IPC: A47C1/023
Filed: 1935-12-18
Abstract: 466,225. Sliding seats. VAUGHAN, E. Dec. 18, 1935, No. 35057. [Class 52 (ii)] A wheeled seat running on a track is constrained by tension springs c mounted substantially centrally between the wheels and normally vertical.
Patent GB-855217-A (GB)
Title: A process of and apparatus for producing uranium fluoride
Inventor: DELANGE MAURICE
IPC: B01J8/12
Filed: 1958-10-31
Abstract: <PICT:0855217/III/1> <PICT:0855217/III/2> A process of producing uranium fluoride by fluorination of uranium oxide is carried out in at least two successive treating chambers through which flow currents of hydrofluoric acid gas the main fluorination being effected in the first chamber and the finishing treatment in the other or another chamber.  The means for performing this finishing treatment include a horizontal tube 8, a screw 9 for causing uranium fluoride to travel through said tube, an electric heating system 10 and heat insulating means 11. Screw 9 is controlled either manually at 12, or by a speed reducing gear and motor system 13, 14.  Fresh hydrofluoric acid is fed at 15 and the residual gases flow out at 16.  Screw 9 serves both to propel the solid material through tube 8 and to stir it in the presence of the gas.  The connection with the main oven is ensured by means of a corrugated sleeve 17 which is capable of absorbing thermal expansions.  Furthermore, means for the entry of a neutral gas for preventing the gases which are used, respectively in tube 8 and in oven 1, from passing each into the other of said elements are described.  The feed of, for example, nitrogen to said means is shown at 211 at the bottom end of a funnel-shaped member 18.  When leaving tube 8, the solid material drops at 22 into a container 24, through a coupling sleeve 23.  In this case also, means such as above described may be used in order to prevent mixing of the gas present in tube 8 and of that present in chamber 24.  The feed of nitrogen into said means is shown at 212.  Automatic control of the reaction is shown in Fig. 2.  Specification 800,692 is referred to.
Patent GB-1393924-A (GB)
Title: Printer for producing very large sized prints
IPC: G03B21/11
Filed: 1972-07-27
Abstract: 1393924 Photographic projection printer ITEK CORP 27 July 1972 [19 Aug 1971] 35134/72 Heading G2A A projection printer includes a screen 26, 27 on to which an image can be focused and subsequently a photo sensitive paper 42 can be fed from a roll 41, within a cassette housing 40, for exposure. The projected image is derived from an image on a strip or mounted on an aperture card. Within the housing 40 are a pair of rollers 43, 44 for feeding the paper 42 into a gap 28 between a transparent 27 and translucent layer 26 of the screen. The image is focused on the lower surface (as viewed) of the layer 26. A rotatable blade 54 is mounted slidably on bar 57, by means of ring 56, so that the blade 54 can move across the opening of the housing 40, in co-operation with blade 53 of the cassette, to sever the strip of paper 42 in the gap 28 from the roll 41. The rollers 43, 44 may be manually rotatable in either direction or motor driven. In both cases roller 44 is driven and roller 43 is an idler, the former is rubber coated and the latter has a steel surface. At the opposite end of the screen 26, 27 to that shown in Fig. 5 is a roller for driving the severed exposed paper 42 into a processor located adjacent to the exit end of the screen 26, 27. The components producing the image on screen 26, 27 are the subject of copending application 35129/72.
Patent GB-1483603-A (GB)
Title: Double bit lock key
IPC: E05B19/14
Filed: 1974-08-09
Abstract: 1483603 Keys CISA SpA 9 Aug 1974 35149/74 Heading E2A A double-bit key having at each end of its Shank 1 identical but reversed double bits 4, 5 and 6, 7 for inside and outside use on an appropriate lock, has a shroud 14 which may be slid along the shank to cover the bit which is not in use. A stirrup 26 which is indexed in slots 24, 25, keeps the shroud in place. Unsymetrical ribs such as 11, on the bit prevent reverse insertion of the key. A modified stirrup is described, (Fig 3, not shown). The central part 5, 6, 7, 8 of the bit operates the lock bolt.