baber/WOPTO huggingface dataset:
Patent GB-1132834-A (GB)
Title: Improvements in or relating to transformers, reactors or the like
IPC: H01F27/32
Filed: 1965-11-19
Abstract: 1,132,834. Transformers. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. 19 Nov., 1965 [20 Nov., 1964], No. 49270/65. Heading H1T. Clamping pressure from member 12 is exerted on winding layers 1, 2 through bracing structures comprising sets of blocks 7 secured at spaced intervals around cylindrical strip members 8, apertures 16 being provided in the cylindrical members 8 so that cooling medium (oil), after flowing up channels between spacer bars 11 arranged between the winding cylinders, can flow radially through the apertures 16 as at 9<SP>1</SP>. The apertures 16 may be oval or rectangular or may result from making the depth of the strip 8 at any point less than that of the adjacent blocks 7 (Fig. 5, not shown). The bracing structures may be machine made in " Venetian blind " form, cut into wedgeshaped strips and bent to the required cylindrical form. Alternatively, the blocks may be secured to the cylinders during construction of the winding. The ends of the spacer bars may fit into radial slots in annular discs.
Patent GB-1068845-A (GB)
Title: Improvements in or relating to means for controlling the amplification of transistoramplifiers
IPC: H03G3/30
Filed: 1963-12-13
Abstract: 1,068,845. Transistor gain control circuits; tuning indicators. PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES Ltd. Dec. 13, 1963 [Dec. 15, 1962], No. 49353/63. Headings H3Q and H3T. In a transistor amplifier having two or more stages in cascade, and in which the gain is varied by variation of the collector currents in two stages, the gain in the one stage is decreased by decrease in collector current whereas that in the other stage is decreased by increase in collector current. As applied to a radio receiver, of which only the D.C. control circuits are shown, R.F. stage 2 derives a gain-controlling base bias from the collector load 5 of an auxiliary D.C. amplifier 1, to the base of which the gain control current -I b1  is applied, while the I.F. amplifier 3 derives base bias from a resistor 4 in the emitter circuit of D.C. amplifier 1. By applying a fixed bias to the emitter of transistor 3, from potentiometer 7, 8 a delay may be introduced into the gain variation of this transistor. The D.C. amplifier 1 may be operated in a bottoming condition: this gives a region in its base current/collector potential characteristic over which the collector potential is substantially constant (U c1 , Fig. 3a, not shown) and over which the gain of the R.F. stage 2 is maintained constant. The combination of this effect with the delay on transistor 3 may be utilized to obtain an overall characteristic in which the gain of transistor 3 is first reduced while that of the R.F. stage 2 remains constant, following which the gain of the latter is reduced while the gain of I.F. stage 3 is held constant (Fig. 3c, not shown). The resistors 5 and/or 4 may be replaced by lamps to provide tuning indication.
Patent GB-978650-A (GB)
Title: Improvements in or relating to leg assemblies for furniture
Inventor: SPICER JOHN HENRY
IPC: F16B12/52
Filed: 1963-12-16
Abstract: 978,650. Furniture joints. ROBIN COMPONENTS Ltd. Dec. 16, 1963, No. 49555/63. Heading A4W. A furniture leg assembly includes a T- shaped nut 1, a leg 7 having a bolt 6 and a face plate 10 with a rim 11 and a locating projection 12 to engage in a notch 13 in the underside 8 of the furniture base 9, the plate 10 being inclined to cause the leg to be at an angle to the base 9. The base 9 has a T-shaped slot 15 so that the nut can be inserted from below and moved into the shorter leg of the slot and retained there against rotation as the leg is screwed in.
Patent GB-1086918-A (GB)
Title: A teaching device
IPC: G09B3/04
Filed: 1964-12-08
Abstract: 1,086,918. Teaching machines. A. JOBANSEN. Dec. 8, 1964 [Dec. 23, 1963], No. 49855/64. Heading Q5G. A teaching machine comprises a lockable case 1 and a cover plate 2, the case 1 carrying a stack of sheets 4 which are advanced one at a time by means of a hand-operated pad between a backing plate 13 and an upper plate 14 where each sheet is engaged by a feed wheel 16, which feeds each sheet past a reading area and through a passage formed by the plates 13, 14 to the underside of the machine. A cover glass 22 carries contacts which engage each sheet which is provided with holes so that the contacts 27 contact the backing plate and close a circuit thus starting a tape recorder which plays a text relating to the text which is visible in the reading area.
Patent GB-1481525-A (GB)
Title: Red electrostatographic developer
IPC: G03G9/09
Filed: 1974-11-19
Abstract: 1481525 Electrostatographic developer XEROX CORP 19 Nov 1974 [27 Dec 1973] 49969/74 Heading G2H The developer comprises (a) toner particles comprising, dispersed in resin material, a red colourant of the general structure: - in which R 1  is hydrogen, a methyl group, or a trimethyl ammonium chloride group; and R 2 , R 3 , R 4 , R 5  are selected from hydrogen and a methyl group; and (b) steel carrier particles coated with a terpolymer formed from the monomers styrene, methyl methacrylate and vinyltriethoxysilane. Many known dyes of the above formula are specified. Resin materials exemplified are: a styrene/ butylmethacrylate copolymer plus polyvinyl butyral; polystyrene plus polyvinyl butyral; a styrene/ methylmethacrylate copolymer; a vinyl acetate/acrylonitrile copolymer; a styrene/ethylacrylate copolymer plus polyvinyl butyral; a polymeric condensation product of: - 2,2-bis(3-methyl-4-#-hydroxy/ethoxy/phenyl)- propane and fumaric acid plus polyvinyl butyral; a polymeric condensation product of 2, 2-bis(3- methyl-4-#-hydroxy ethoxy phenyl)-propane and maleic acid anhydride; and a polymeric condensation product of: - 1,1-bis(4-#-hydroxy ethoxy phenyl)-cyclohexane and succinic acid.
Patent GB-1291453-A (GB)
Title: Spectacles for improving deficient colour vision
IPC: G02C7/10
Filed: 1969-10-10
Abstract: 1291453 Spectacles; photographic multicolour screen NATIONAL PATENT DEVELOPMENT CORP and F A PIRINGER 10 Oct 1969 [14 Oct 1968] 49977/69 Headings G2C and G2J A pair of spectacles for a person with defective colour vision has a lens comprising a support and a filter material made up of a mosaic of differently coloured regions of differing light transmitting properties, adjacent regions being primary colour filters having spectral transmission factors which are inversely related to the colour sensitivity of the intended user. The mosaic is a photographic diapositive bonded on the side of the support facing the wearer or alternatively the photograph may be developed on the support. The coloured regions are hexagonal and of such a size that, because of the eye's continual unconcious movements, it is unable to focus on each region individually so that the overall visual effect is that of a superimposition of colour filters transmitting white light; however, movement from one coloured region to another sensitizes the retina to the complementary colour to give a truer representation of the colours. Adjustment of the transmission factors of the filter material enhances or diminishes the eye's sensitivity for that colour. The filters are prepared by making three black/white diapositives by photographing an image from a projector, projected on to a screen at three different angles. The diapositives are then placed one in each of the beams of the three projectors, each diapositive having hexagonal opaque areas, so that a grid is formed on the screen and, a different primary colour filter placed in each beam will give an image of the desired filter material on the screen which is then photographed by either transmission or reflection and reduced in size.
Patent GB-1300452-A (GB)
Title: Rotary rake head assembly for an agricultural machine
IPC: A01D78/12
Filed: 1970-10-22
Abstract: 1300452 Haymaking machines MASCHINENFABRIK FAHR AG 22 Oct 1970 [30 Oct 1969] 50176/70 Heading A1F A rake-head for a haymaking machine comprises a housing 3 rotating about the axle 2, the housing 3 carrying spokes 11 fitted with spring mounted prongs 12. The spokes 11 are mounted in sleeves 13 fixed to the housing and contain pins 14 engaging in slots 15 which enable the spokes 11 to turn axially raising the prongs 12 from the ground as the spokes move inwardly towards the axle 2. A spring 16 is attached between each spoke 11 and sleeve 13 and serves to retain the prongs 12 in their raised transport position. In operation, as the rake-head rotates, the spokes 11 are drawn outwardly by centrifugal force against the action of the spring 16. The ground wheel 6 is mounted on an axle 5 which is fixed relative to the axle 2 by an arm 4 and which contains a rotatable disc 19 engaging links 20, the other end of which is displaceably mounted in an extension 21 of the spoke 11. The disc 19, arm 4, pins 14 and slots 15 serve to pull the spokes 11 inwardly over a portion of their path, thus periodically raising the prongs 12, The prongs 12 are fitted with sliding shoes 29 to enable them to adapt more easily to irregularties in the ground level, and for the same reason, the spokes 11 contain a sliding skid 23 adjustable by means of the bolt 27 and holes 28. After switching off the drive to the rake-head the spokes 11 are drawn inwardly by the springs 16 and turned by the pins 14 and slots 15 to raise the prongs. In a second embodiment (Fig. 3) the spokes 43 are mounted in a neck 53 fixed to an extension 39 of the housing 33, and the raising of the prongs 44 over a portion of their path is effected by links 50 provided with stops 55, and an eccentric 48 having a cam track 49. As the spokes 43 are pulled inwardly by the links 50 during rotation, the prongs 44 are raised by the rollers 47 moving in helical slots 42. After operation the spokes are pulled inwardly by the springs 51 and the prongs are raised for transport purposes.
Patent GB-1367957-A (GB)
Title: Process for preparing cephalosporins
IPC: A61K31/546
Filed: 1971-10-28
Abstract: 1367957 Schiff bases of penicillins and cephalosporins E R SQUIBB & SONS Inc 28 Oct 1971 [28 Oct 1970 8 July 1971] 50220/71 Heading C2A The Schiff bases of the 1-oxides of 6-amino. penicillanic acid of Formula VI wherein R is an organic radical and R<SP>11</SP> is hydrogen, a cation or an esterifying group may be prepared by reaction of the corresponding 1- oxide of 6-APA with an aldehyde RCHO or by oxidation of a Schiff base of 6-APA of Formula VII  wherein R<SP>1</SP> is an esterifying group. Also the Schiff bases of 7-amino-3-desacetoxycephalosporanic acid of Formula II may be prepared by heating the corresponding compounds of Formula VI which have their carboxyl groups protected, e.g. by esterification preferably the heating is to a temperature of 70 to 145 C. in the presence of a catalyst and with the Schiff base dissolved in an inert solvent. The catalyst may be an acid such as an organic acid or anhydride, an amine salt or a metal salt such as stannic chloride or aluminium chloride. The Schiff bases of Formula II may be hydrolysed to 7-ADCA.
Patent GB-1435619-A (GB)
Title: Treatment of sulphur plant feed gas
IPC: B01J27/043
Filed: 1973-10-29
Abstract: 1435619 Treatment of sulphur plant feed gas RALPH M PARSONS CO 29 Oct 1973 [30 Oct 1972] 50232/73 Heading C1A An acid gas stream containing water and hydrogen sulphide, for feed to a sulphurproducing process, which also contains hydrogen cyanide and/or ammonia is treated by contacting said acid gas stream with a catalyst comprising at least one metal sulphide wherein the metal is selected from Group Va, Group VIa, the fourth period Group VIII and the two Rare Earth Series of the Periodic Table deposited on a support of silica, alumina, silica-alumina or mixtures thereof at a temperature above 1000‹ F., whereby said hydrogen cyanide and/or ammonia are converted to inert nitrogen. In preferred embodiments the temperature is in the range 1000-2000‹ F., especially 1200- 1500‹ F., the catalyst comprises a sulphide of iron, cobalt, nickel, molybdenum or thorium (or any mixture thereof) on a support of activated alumina, and the proportion of hydrogen cyanide and ammonia to hydrogen sulphide in the feed gas is in the range 1 : 200 to 10 : 1 by volume. Two methods are described of attaining the necessary temperature for the catalytic conversion. In one, the feed gas is passed over the catalyst in a tower which is surrounded by a furnace which maintains the catalyst at a suitable temperature. In the other, the feed gas is first mixed with a hot gas formed by burning a hydrocarbon fuel in air in a hot gas generator. After treatment, the feed gas is subjected to conventional processes (and in particular, the Claus or Stretford processes) for conversion of the hydrogen sulphide contained therein to sulphur.
Patent GB-1261999-A (GB)
Title: Suction devices for drawrolls
IPC: D02J13/00
Filed: 1969-10-14
Abstract: ..1,261,999. Drawing filaments. MASCHINENFABRIK RIETER A.G. 14 Oct., 1969 [24 Oct., 1968], No. 50334/69. Heading B5B. A suction device for removing undesirable vapours arising during the hot-drawing of filaments comprises a suction tube 6 partially surrounding the circumference of a drawroll 3 and extending across part of its width, the side of the tube facing the drawroller being flattened and provided with a slot. Suction may be applied at the top of tube 6 via duct 8, the roll rotating in the direction shown. A condensation trap 10 may be provided.
Patent GB-1480370-A (GB)
Title: Diffusion-transfer colour photographic silver halide film unit
IPC: G03C8/36
Filed: 1974-11-20
Abstract: 1480370 Colour photographic diffusion transfer silver halide film unit FUJI PHOTO FILM CO. Ltd. 20 Nov 1974 [20 Nov 1973] 50378/74 Heading G2C A photographic film unit comprises (1) a lightsensitive element comprising a support bearing at least one pair of layers each comprising (i) a negative type light-sensitive silver halide emulsion layer containing a ballasted compound capable of reacting with an oxidized aromatic primary amine colour developing agent to form a non-diffusible compound and (ii) an adjacent light-insensitive layer containing physical development nuclei and a ballasted coupler capable of reacting with an oxidized aromatic primary amine colour developing agent to form a diffusible dye, (2) an imagereceiving element comprising a support bearing an image-receiving layer capable of fixing diffusible dye released from the light-sensitive element (1) and (3) a rupturable container containing an alkaline processing composition capable when ruptured of releasing its contents between (1) and (2), the film unit containing (a) an aromatic primary amine colour developing agent in (3), or a material capable upon hydrolysis by the processing composition of forming such developing agent in (1), (b) a silver halide solvent and (c) at least one development accelerator of one of the formulae:- where R<SP>1</SP> and R<SP>2</SP> are each 1-4C alkylene and R<SP>3</SP> is H, amino, 1-4C alkyl or 1-4C aminoalkyl. In the Examples the development accelerator is in the processing composition but it may be present in the silver halide emulsion layer.
Patent GB-506877-A (GB)
Abstract: 506,877. Television receivers ; thermionic distributers. TOULON, P. M. G. June 9, 1938, No. 17228. Convention date, June 15, 1937. Addition to 497,367. [Classes 40 (iii) and 40 (v)] Signals are distributed to electro-optical cells 9 .. 12 by unblocking in rotation associated thermionic valves 13 .. 16 by a static distributer III. The impulses for the latter may be derived from two periodic potentials of different frequency. The vision signals from an amplifier V are applied to the anodes of the valves, and the distributing sinusoidal impulses, which pass down the delay network III from a synchronized oscillator I, are applied to the grids of the valves. The signal for each cell is stored in a condenser 17 .. 20, which is coupled to the cell by a condenser 23 and resistance 22 to smooth the change in the vision potential. According to modifications: the signals are applied to one grid and the distributing impulses to another grid of multi-grid valves, Fig. 2 (not shown), which may amplify the signals, Fig. 3 (not shown); the vision signals modulate a local high-frequency carrier, Fig. 4 (not shown); the distributing impulses are obtained by the superposition of two frequencies in order to obtain sharper impulses, Figs. 5 and 6 (not shown), and multi-grid valves may again be used, Fig. 7 (both shown). Specification 497,404 is referred to.
Patent GB-1237522-A (GB)
Title: Sulphonylamino-pyrimidines
IPC: C07D239/69
Filed: 1969-10-15
Abstract: 1,237,522. Sulphonamido - pyrimidines. BOEHRINGER MANNHEIM G.m.b.H. 15 Oct., 1969 [17 Oct., 1968], No. 50723/69. Heading C2C. Novel compounds I (including salts and hydrates thereof) where A is C 1-3  alkylene, R 1  is H or together with A comprises trimethylene, R 2  is alkyl, cycloalkyl, cycloalkylalkyl, aryl, aralkyl, alkoxy, cycloalkoxy, alkoxyalkyl, alkoxyalkoxy, or alkylmercapto, optionally substituted by halogen, hydroxy or alkyl, R 3  is H or C 1-3  alkyl or R 2  and R 3  together signify 3 to 5 methylene radicals to comprise a ring and n is 0, 1 or 2 are made by standard methods including cyclization to form the pyrimidine nucleus and hydrogenation of corresponding fluorenylidene compounds. Pharmaceutical preparations having strong blood sugar sinking action contain I as active ingredient; administration may be enterally or parenterally.
Patent GB-1262851-A (GB)
Title: Improvements in flexible dams
Inventor: HOPKINS LESLIE ARTHUR
IPC: E02B7/00
Filed: 1967-11-09
Abstract: 1,262,851. Flexible dams. NATIONAL RESEARCH DEVELOPMENT CORP. 7 Feb., 1969 [9 Nov., 1967], No. 51116/67. Heading E1H. A dam consists of a flexible sheet 2 fitted with ribs 3 at intervals and ties 4 allowing the sheet to belly to form U-shaped walls between the ribs. In use it is fitted across the river 10 and positioned by pegs 13, 15; 16, 17 the laths carrying the bottom ties which are slack to allow the sheet to bed in the river. A takeoff pipe 27 may be fitted. The tops of the ribs may have struts extending to the river bed for support.
Patent GB-1024282-A (GB)
Title: Improvements in methods of forming sheaves, pulleys and the like
IPC: B21H1/04
Filed: 1963-12-30
Abstract: 1,024,282. Making pulleys etc.; rolling. ARROWHEAD ENGINEERING CORPORATION. Dec. 30, 1963 [Jan. 10, 1963], No. 51224/63. Headings B3A, B3M and B3V. A method of forming a pulley etc. comprises progressively slitting a steel, aluminium &c. blank 90 at its peripheral edge to form a groove 100, Fig. 12 (not shown), and two flanges, and simultaneously, with a different tool, pressing the flanges laterally and expanding the groove. Blanks of flat or cupped form may be used with holes 34, Figs. 1 and 2 (not shown), for pegs on driving dies which rotate the blank. The blank, Fig. 10 (not shown), between the driving dies (not shown), is slit by a wheel 92, the flanges are separated by a wheel 96, and the base and the peripheral edges 110, 112, 114 of the V-groove are formed by a wheel 108, Fig. 14. Instead of the wheels 92, 96, 108 being driven by contact with the blank, one or all of them may be driven independently. In another form (not shown), a slitting wheel may be followed by a bottom-forming wheel and then by a split, adjustable width-forming wheel. The inner surfaces of the flanges may be marked with radial grooves &c. by a roll to prevent slipping. A modified forming tool may be used, Fig. 6 (not shown).
Patent GB-1088169-A (GB)
Title: Improved paperboard container
IPC: B65D5/06
Filed: 1964-12-17
Abstract: 1,088,169. Gable top containers. EXCELL-O CORPORATION. Dec. 17, 1964 [Dec. 27, 1963], No. 51349/64. Heading B8P. [Also in Division B5] A gable top container of the type disclosed in Specification 1,026,893, which is referred to, which is made from paperboard coated on both sides with a thermoplastic material, e.g. polyethylene, and there is an intermediate foil layer, e.g. aluminium foil between the paperboard and the inner thermoplastic material layer. The inner layer has a thickness substantially twice that of the outermost layer.
Patent GB-1161001-A (GB)
Title: Improvements in or relating to Photographic Copying Processes and Apparatus
IPC: G03C8/06
Filed: 1966-11-16
Abstract: 1,161,001. Photo-copying apparatus. W. ZINDLER [trading as LUMOPRINT ZINDLER K.G.]. Nov.16, 1966 [Nov.25, 1965], No.51424/66. Headings G2A and G2C. Apparatus for carrying out a silver salt diffusion transfer process using a negative material, on the silver halide emulsion layer of which an image is formed, and a receptor material to which the image is transferred, includes two baths for containing liquids, one 22 for moistening the exposed negative material for development and another 21 which contains a liquid having in aqueous solution, reduction nucleii and a silver salt solvent for moistening the receptor material, a pair of common squeeze rollers 9, 10 for comprising the materials in contact, and another pair of squeeze rollers 11, 12 for the moistened receptor material between its bath 21 and the first rollers. The liquid baths may be replaced by roller applicators. Shells 1 and 2 contain the liquids and have guide webs 3, 4, 5, 6 formed as raised ribs to reduce friction and inclined to the direction of advance. Excess liquid is removed from the receptor sheet at rollers 11, 12 and runs back into bath 21 while excess liquid from the rollers 9, 10 runs back to bath 22. The rollers are driven through transmissions 145, 146, 147 by motor 144. In another form, the rollers are driven by separate motors, the common squeeze rollers rotating more slowly than the preceding rollers so as to bow the sheet upwards, Fig.3a (not shown), and facilitate draining. Certain guides are omitted, the planes containing the rollers being inclined to direct the sheets to the common rollers. In yet another form, Fig.5 (not shown), an exposure light source (99) is mounted within translucent glass cylinder (98) mounted between rollers (94, 95, 96) carrying a guiding band (97). Processing solution is stored in two elastic containers (100, 101) and supplied through pipes (104, 105) to the baths as the containers are compressed by plate (102) in response to hand-crank operated lever (103). According to the silver salt diffusion transfer process of the present invention, the receptor material may be paper, film or textile material and is moistened with an aqueous solution containing reduction nuclei and a silver salt solvent. The solution may comprise 0À02% hexachloroplatinic (IV) acid and/or gold (III) chloride hydrochloride.
Patent GB-1095735-A (GB)
Title: Improvements in or relating to adhesives
IPC: D01D5/08
Filed: 1964-12-17
Abstract: A heat fusible rod which is substantially uniform in cross-section along its length, which is flexible enough to be coiled on a reel and unwound therefrom, and which is sufficiently stiff to be pushed endwise into a passageway of an apparatus adapted to melt the rod and apply it to a workpiece in which passageway the rod fits snugly, comprises an outer sheath of a first material, which is stable and comprises a heat fusible synthetic polymer, which sheath surrounds a core of a second material which is also heat fusible, the two materials being such that when the rod is melted and the two molten materials mixed together, a molten adhesive composition is provided which may be applied to a workpiece.  Said first material may be, for example, polyethylene or a polyamide (such as that obtained by reacting polymerized soy bean oil fatty acid with ethylenediamine); the polyethylene may be combined with an ethylene/ethyl acrylate copolymer or a hydrocarbon resin, e.g. a beta-pinene resin.  Said second material may be (a) a vinyl acetate homopolymer or copolymer, e.g. a vinyl acetate/ethylene copolymer; this may be optionally admixed with, for example, a soft tacky thermoplastic saturated hydrocarbon resin or a styrene polymer, (b) a mixture of a beta-pinene polymer, an isobutylene polymer (e.g. an isobutylene-isoprene copolymer), a polyamide and an epoxide resin, and (c) a gum rosin comprising abietic acid.  The second material may also include a plasticizer, e.g. dibutyl phthalate, for the first material.