baber/WOPTO huggingface dataset:
Patent GB-229885-A (GB)
Title: Improvements in method of manufacturing artificial marble, granite and the like
IPC: C04B28/06
Filed: 1924-03-31
Abstract: 229,885. Goffart, E. March 31, 1924. Compound or composite bricks, blocks, and slabs; pottery surfaces, ornamenting and treating. -A process of manufacturing artificial marble and granite, and imitations of stoneware, pottery, crockery and the like, consists of first depositing upon a non-absorbing support or mould a colouring layer imitating the product to be obtained, this layer being coated after hardening with a consolidation layer. Each layer is mixed with a binding ingredient, such as aluminate of lime, which crystallises quickly and prevents subsequent chemical action within the mass. Any small proportion of calcium hydrate set free, may be neutralized by impregnating the colouring layer with an easily emulsified vegetable oil, an insoluble calcareous soap being formed, the vegetable oil impregnation further clearly marking the colours, making the impregnated mass neutral, thereby preserving the colours, and making the surface liquid-proof. To produce a moulded article, the original may be coated with a layer without colouring matter, which can be used as a counterpart or dismountable mould.
Patent GB-552368-A (GB)
Title: Improvements in light sensitive photographic materials
IPC: G03C1/035
Filed: 1941-06-27
Abstract: 552,368. Photographic materials. KODAK, Ltd. (Eastman Kodak Co.). June 27, 1941, No. 8149. [Class 98 (ii)] A photographic sensitive silver salt film, plate, or paper capable of giving a gradation depending upon the colour of the light used for exposure is produced by applying to the support in admixture two portions of unequal size of the same similar photographic emulsion, both portions being dye-sensitized to spectral ranges outside their natural sensitivity such that either can be exposed without substantially exposing the other. The smaller portion may be red-sensitized and the larger green-sensitized or vice versa.. A silver chloride, chloriodide, chlorobromide, chlorobromiodide, bromide, or bromiodide emulsion may be used. The smaller portion may be from 1/7 to 1/3 of the larger portion. The two portions may be prepared separately provided that they are substantially identical in composition. Both portions are preferably sensitized with an amount of dye less than that required to produce optimum sensitization. Dye-wandering may be prevented by the means referred to in Specifications 540,451, 540,464, 541,510, or 541,511, or non-wandering dyes may be used as described in Specification 532,098. Dye-wandering may also be reduced by digesting the emulsion after adding the sensitizing dye but before bringing into contact with the other portion. A further substance may be added to the dye-sensitized emulsion to give a supersensitizing effect. Sensitizing dyes may be selected from the thia-21-cyanine, benzthia-21-cyanine, selena-21-cyanine, 2:21-cyanine, thiazolo-2<SP>1</SP>-cyanine, dibenzythiacarbocyanine, 5:5<SP>1</SP>- dichlorothiacarbocyanine, 5-chlorothiacarbocyanine, 5-chlorothiaselenacarbocyanine, 5-chlorothiabenzthiacarbocyanine, 5:5<SP>1</SP>-dichloroselenacarbocyanine, 5-chloroselenacarbocyanine, 5-chloroselenathiacarbocyanine, 5-chloroselenabenzthiacarbocyanine, merocyanine (which may contain a longchain organic group), merocarbocyanine, and merodicarbocyanine classes. The emulsion binder may be gelatin, a resin, or a cellulose derivative. In an example, a silver-bromiodide emulsion is divided into two portions A and B, and portion (A) is sensitized with 2:21:dimethyl-8-ethyl-3:4: 3<SP>1</SP>:4<SP>1</SP>- dibenzthiacarbocyanine bromide and portion (B) with 2:11-diethyl-3:4-dibenzthiacarbocyanine bromide. The portions are held at 50‹ C. for 10 minutes before mixing. The material may be exposed with green and with red light. Three or more portions of emulsion may be used similarly. Specifications 498,031, 498,289, 498,290, 498,291, 514,159, 514,198 and 515,372 also are referred to.
Patent GB-1388914-A (GB)
Title: Pressure vessels
IPC: F16L55/052
Filed: 1972-02-22
Abstract: 1388914 Fluid-pressure accumulators J H MERCIER 22 Feb 1972 [4 March 1971] 8174/72 Heading F1D A fluid-pressure accumulator 10 comprises a flexible bladder 15 having two parts 15a, 15b joined by a bond zone 22 located obliquely of  the bladder. To relieve the stresses on this zone 22, the bladder has a stress-relieving zone 23 which comprises a reduced thickness mid-point 24 produced by gradual thinning of the bladder 15 from each end of zone 23. The width C of the stressrelieving zone 23 must be at least equal to the width A of the bond zone 22 while the distance separating the zones must be less than twice the width of the bond zone. An alternative embodiment is also described, Figs.2 and 3 (not shown) in which the bond zone joins the bladder to a closure member for a fluid part of the accumulator.
Patent GB-855875-A (GB)
Title: Process for the prevention of slip in driving belts of polyamide fibre fabrics by impregnation with a synthetic resin composition
Inventor: HEIDINGER WERNER
IPC: F16G1/14
Filed: 1957-03-13
Abstract: Slip is prevented in polyamide fibre fabric driving belts by impregnating the fabric with a mixture of (i) 1 1/2 -2\ba1/2 parts by weight of a ureaformaldehyde resin, (ii) 1 part of a cyclo-aliphatic ketone formaldehyde resin, and (iii) 10-40% by weight of the mixture of a condensation product of a carbamic acid ester of an aliphatic or cycloaliphatic alcohol with formaldehyde.  Specified components are (i) a methanol-modified dimethylolurea, (ii) an alkali-condensed cyclohexanoneformaldehyde resin, and (iii) a formaldehydeisobutyl carbamate condensation product.  There is preferably added to the mixture, in a quantity sufficient to ensure elasticization, a polyester of an aliphatic or aromatic dicarboxylic acid (e.g. adipic) and a polyvalent aliphatic alcohol (e.g. trimethylol-propane or -ethane, glycerine or hexane triol). There is also preferably added 2-6%, by weight of resins (i), (ii), (iii) and the polyester, of an ester of a dicarboxylic acid with a mono-alcohol, e.g. butyl phthalate or cyclohexanol adipate.  The mixture is applied in the form of a 60% C1-5 alcoholic solution containing a hardener (e.g. NH4CNS) by rolling or brushing, and is hardened in situ by hot air or infra red rays, the belt being stretched during the hardening process. Polyamide fabrics treated in this way are particularly useful as grinding wheel spindle belts or conveyer belts.
Patent GB-333552-A (GB)
Title: Improvements in and relating to electrical condensers
IPC: H01G4/38
Filed: 1929-03-14
Abstract: 333,552. Turner, J., and Ferranti, Ltd. March 14, 1929. Condensers.-A high-voltage condenser is built up from elements each formed by rolling strips of tin foil a, b with an interposed strip of paper c, the tin-foil strips projecting at opposite edges of the paper and being pressed over to contact with the edges of the strips of adjacent elements in an insulating tube d, the several elements being thus connected in series. A number of condenser units so formed are then mounted in zigzag formation on an insulating framework and connected in series for use in high-voltage work.
Patent GB-288200-A (GB)
Title: Improvements in artificial teeth
IPC: A61C13/10
Filed: 1928-03-19
Abstract: 288,200. Pollak, J. E., (Hiltebrandt Zahnfabrik Akt.-Ges., Dr.). April 4, 1927, [Convention date]. Teeth, artificial. - In order to prevent the metal backing plate from showing through the comparatively thin cutting edge of a porcelain tooth, the latter is provided on its back surface with a layer b of non- transparent porcelain harder than the usual body porcelain used for the front portion a. The mass b extends at least up to the fastening pins c and preferably up to the neck of the tooth, and may consist of a porcelain containing a higher proportion of quartz and clay than that used for the part a. Specifications 19208/06 and 254,075 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) states also that the porcelain used for the rear portion b of the tooth is such as to acquire a " polish-like smooth surface " when burnt. This subject-matter does not appear in the Specification as accepted.
Patent GB-319375-A (GB)
Title: Improvements in or relating to resistance-coupled amplifiers
IPC: H03F1/08
Filed: 1928-03-19
Abstract: 319,375. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). March 19, 1928. Thermionic amplifiers.- A resistance-coupled amplifier is characterized by the use of a known type of valve having two or more parallel filaments 7, 14 energized by a terminal pressure of not more than one volt.
Patent GB-398561-A (GB)
Title: Process of manufacturing ª‰ phenyl ethyl alcohol
IPC: C07C29/00
Filed: 1932-03-21
Abstract: b -Phenylethyl alcohol is prepared by heating chlorobenzene with magnesium to a temperature of 150-160 DEG  C. in the absence of a solvent, condensing the resulting phenyl magnesium chloride with an ethylene halohydrin or ethylene oxide in a hydrocarbon medium, and decomposing the reaction product with water.  In the first stage of the process, the chlorobenzene is preferably added at intervals in portions to the magnesium, and to facilitate the reaction a small amount of phenyl magnesium chloride is added. The use of ethylene chlorhydrin in the presence of benzene as solvent in the second stage is described.  British Specification 122,630, [Class 2 (iii), Dyes &c.], and French Specification 348,957 are referred to.
Patent GB-768140-A (GB)
Title: Improvements in saturable core reactance devices
Inventor: BELSEY FREDERICK HAROLD
IPC: H01F29/14
Filed: 1954-03-23
Abstract: 768,140. Inductors. METROPOLITANVICKERS ELECTRICAL CO., Ltd. March 23, 1955 [March 23, 1954], No. 8482/54. Class 38 (2). A saturable inductor comprises a relatively thin permanent magnet 8 magnetized in the direction of its shortest dimension, and two saturable limbs 1, 2 each having one end in magnetic connection with one pole face of the magnet, the magnetic circuit being completed by a yoke 9, 10, 11 which extends from the other ends of the limbs 1, 2 to the other pole face of magnet 10. The cross-sectional areas of the yoke 9, 10, 11 and of the permanent magnet 8 are large compared with that of limbs 1, 2. A.C. coils 3, 4 are wound on laminated limbs 1, 2 the A.C. magnetic circuit being completed by laminated yokes 5, 6 of greater cross-sectional area than the limbs so that these saturate first. A soft iron plate 7 is interposed between magnet 8 and the A.C. core structure. In the modification shown in Fig. 4 a permanent magnet 8, 81 is arranged at each end of the limbs 7 which are clamped between flanges 20, 20<SP>1</SP> on plates 7, 71 and angle members 21, 21<SP>1</SP>.
Patent GB-1458841-A (GB)
Title: Process for the continuous melt thermoforming of polymers
IPC: B29C51/22
Filed: 1974-02-25
Abstract: 1458841 Continuous melt thermoforming DU PONT OF CANADA Ltd 25 Feb 1974 [28 Feb 1973] 8504/74 Heading B5A A process for the continuous melt forming of articles of uniform thickness, e.g. pie plates from a thermoplastic polymer, e.g. polyamide. comprises the steps of extruding a flat web 18 downwardly over a series of mould cavities 14 in a wheel or belt to sequentially cover the cavities, and cooling the polymers, the cavities being formed in moulds comprising a porous metal, e.g. bronze or stainless steel. In the figure the wheel is driven by a motor 6 and belt 5, and a segment 8 sequentially connects each mould with a sourse of vacuum 10 via a pipe 9. The formed articles can be cooled by a fan or internal cooling means on the wheel.
Patent GB-686253-A (GB)
Title: Improvements in and relating to milk-warming apparatus
IPC: A47J27/56
Filed: 1950-04-05
Abstract: 686,253. Floats for milk-warming vessels. STOTT & CO. (ENGINEERS), Ltd., J., and STOTT, R. E. April 5, 1951 [April 5, 1950], No. 8534/50. Class 66  A float 3 on the surface of milk in a parallel-sided, lined urr 1 protects the milk surface from exposure to air and reduces the formation of skin. The float may be of stainless steel, plastic, or coated &c. hardwood &c. and may have a knob or ring handle 5. It has no cavities &c. in which milk could lodge.
Patent GB-567187-A (GB)
Title: Improvements in or relating to means for conveying liquids from or into containers
IPC: B64D37/14
Filed: 1943-05-28
Abstract: 567,187. Containers for liquids. SHAKESBY, L., SMITH, S. H., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 28, 1943, No. 8553. [Class 21] A flexible container 1 for liquids of the kind consisting of a non-rigid structure in which the liquid-containing envelope consists of flexible non-metallic material, is provided with means for filling or emptying, consisting of a pipe, conduit, &c. 3, 4 secured by welding, brazing, &c. to a cylindrical extension 5 apertured at 11 and flanged at 7 for securing to a base-plate 17 by means of bolts 12. A gauze &c. filter may be inserted in member 5 to cover the apertures 11.
Patent GB-1422755-A (GB)
Title: Radiating coaxial cable arrangement
IPC: H01Q5/00
Filed: 1974-02-26
Abstract: 1422755 Aerials STANDARD TELEPHONES & CABLES Ltd 26 Feb 1974 8579/74 Heading H4A A radiating co-axial cable arrangement comprises a first length of radiating cable, having a first periodic slot array for radiating a signal at a first frequency, coupled to a second length of radiating cable having a second, different periodic slot array for radiating a signal at a second, different frequency, the first length of cable serving as a transmission line for conveying the signal at the second frequency to the second length of cable. In a first embodiment (Fig. 1, not shown) three lengths of coaxial cable, having different slot arrays in their outer conductors, are connected in series. Signals of different frequencies F1, F2, F3 are fed in, and radiation at the frequency F1 takes place from the array in the first length, whilst the signals at the frequencies F2, F3 are conveyed to the second length without appreciable radiation thereof from the first length. Similarly, the slot array in the second length of cable radiates the signal at the frequency F2 and conveys the signal at the frequency F3 to the third length, from which it is radiated. In a second embodiment (Fig. 3, not shown) a first length of slotted coaxial cable radiates a signal at the frequency Fl whilst acting as a feeder for spur lengths of differently slotted coaxial cables, which radiate signals at the frequencies F2, F3, respectively.
Patent GB-293102-A (GB)
Title: Improvements in or relating to knives for splitting or other machines
IPC: C14B1/14
Filed: 1927-03-29
Abstract: 293,102. British United Shoe Machinery Co., Ltd., and Hallam, H. March 29, 1927. Splitting-machines.-The knife of a leathersplitting or other machine has one edge 6 sharpened and the edge edge 5 shaped to be sharpened with a minimum of grinding. The edge 5 forms an abutment while the edge 6 is in use. The knife is clamped by slots 2. Specification 14725/02 is referred to.
Patent GB-1099871-A (GB)
Title: Improvements in or relating to a method and apparatus for printing legible characters
IPC: B41J2/395
Filed: 1965-03-01
Abstract: 1,099,871. High speed selective printing. ROBERT BOSCH G.m.b.H. March 1, 1965 [March 13, 1964], No. 8608/65. Heading B6F. Ink-less printing; characters formed by an assembly of dots.-A method of printing characters from a row of electrodes selectively energized as a metal coated insulating material record carrier is fed past them, comprises applying a voltage of 20-50 v. so that the resilient free ends of the electrodes vaporize the metal layer to form the characters. In Fig. 1 (not shown), the carrier is a tape fed longitudinally past a row of seven electrodes and the characters are formed as the tape moves. In Fig. 3 (not shown) the method is applied to a line printer. An erodable sheet 23 is attached to a platen so that a single printing head 24 moves relatively thereto such that with every full revolution of the platen a line of text is vaporized out of the metal layer of the metal layer of the recording carrier. Multiple character printing.-The method may be applied to line printers where a vaporizing head is in each character position, see Fig. 7 (not shown). Printing heads.-Each printing head comprises a wire 30, Fig. 4 (not shown), mounted at one end on a terminal plate 31. Each plate 31 is separated by an insulating plate 32 and mounted in a housing 34. The free ends project on to the record through apertures in a plate 33. In a modification, Fig. 6 (not shown), the wires are mounted on circular discs which may be adjusted as the ends of the wires wear. Cleaning printing heads.-A jet of air may be introduced into the printing heads which in passing through the apertures in the plate 33 keeps the electrodes clean. In a modification the head is moved away from the record and cleaned by a brush.
Patent GB-558228-A (GB)
Title: Machine for collecting fish
IPC: A22C25/08
Filed: 1942-06-23
Abstract: 558,228. Conveyers. AKTIEBOLAGET G. AREHNS MEKANISKA VERKSTAD. June 23, 1942, No. 8623. Convention date, July 4, 1941. [Class 78 (i)] A machine for collecting fish has a conveyer for feeding the fish transversely, and a device for successively transferring spits from a spit conveyer to means for supporting the spits in the fish-feeding direction to cause the fish conveyer to thread the fish successively on to the spit in the supporting means. As shown in Fig. 1, the empty spits 1 rest in recesses in a frame 4 carried along by a chain conveyer 7 intermittently driven through a distance equal to the spacing of the spits by a sprocket 12 driven by cam mechanism. The chain driven fish conveyer 26 comprises a number of plates 29 each formed at one end with three pockets 30 into each of which is packed a fish, belly upwards, its head just touching a gauge plate 31. After each movement of the spit-carrying frame, a pair of arms 36, intermittently driven through one revolution, lift the end spit and deposit it on a pair of inclined arms 44 down which it rolls until it comes to rest in notches on the pockets 30 of the fish conveyer, where it is held against longitudinal movement by a stop 34, and against lateral displacement by a roller 45 on a spring controlled arm 48. Movement of the fish conveyer causes the spit to be filled with fish, the roller 45 yielding to allow the passage of fish. At this stage, plates 29 on the fish conveyer which do not carry fish, being gapped at one end 32, have come opposite the ends of the spit. This allows a pair of intermittently driven arms 50 to rotate and lift the filled spit and deposit its ends on the curved edges of guide plates 54 down which it slides to fall into notches on an empty spitcarrying frame on the conveyer 7. In a modification, a plurality of fish conveyers may be operated together with a joint spit carrier.
Patent GB-1570937-A (GB)
Title: Process for the production of n - (2 - methyl - 4 - chlorophenyl) - formamidine derivatives
IPC: A01N37/52
Filed: 1977-03-01
Abstract: A process is described for the preparation of N-(2-methyl-4-chlorophenyl)formamidine derivative of the formula <IMAGE> in which R1 denotes hydrogen or an alkyl group having 1 to 4 carbon atoms and R2 denotes an alkyl group having 1 to 4 carbon atoms, which is based on reacting an alkyl formamide with an inorganic acid chloride, condensation of the resulting intermediate with o-toluidine and chlorination of the resulting N-(2-methylphenyl)formamidine derivative. The essential feature of the process is that all reaction steps are carried out in a halogenated hydrocarbon. The N-(2-methyl-4-chlorophenyl)formamidine derivatives of the above formula which can be prepared by this process are pesticides, in particular acaricides.
Patent GB-580920-A (GB)
Title: Improvements in and relating to terminal banks and distributing frames for automatic telephone exchange and like systems
IPC: H01H63/06
Filed: 1939-03-17
Abstract: 580,920. Automatic exchange switches and distributing frames. GROSE, H. J. (Telefon Fabrik Automatic Aktieselskabet). March 17, 1939, No. 8626. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 7, 1939.] [Class 40 (iv)] [Also in Group XXXVI] Multipling wires 8 ... 10 for switches and distributing frames built up from two or more spaced thin sheets of insulating material in holes in which the contacts or terminals are held by friction, are connected to the terminals resiliently. As shown, the multipling wires are twisted to form double helices which embrace the terminal ends loosely and are connected by soldering only at the ends 20 so that the mechanical connection is a resilient one. Further wires may be soldered round or within the loops 25 formed at the ends of the helices. According to the Specification as open to inspection under Sect. 91, the other ends of the distributing frame terminals may be formed as shown in Fig. 3 (Cancelled) with reduced portions to limit transfer of heat from the soldering eye to the main body of the terminal. This subjectmatter does not appear in the Specification as accepted.
Patent GB-244626-A (GB)
Title: Improvements in pan lids
IPC: A47J36/06
Filed: 1925-04-01
Abstract: 244,626. Lewis, E. April 1, 1925. Lids.-The lid of a pan or other cooling vessel has sightapertures a, covered with mica &c., disposed on either side of a central bar c to which the handle h is attached. Steam escape openings b are formed in the domed edge of the lid.
Patent GB-757782-A (GB)
Title: Improvements in and relating to the production of transparent electrically conductive films
Inventor: PRESTON JOHN SILVEY
IPC: H01B1/00
Filed: 1952-04-04
Abstract: A transparent, electrically conductive coating is formed on a transparent glass or other vitreous support by applying a thin, transparent layer of an oxide of Cd, Pb, Te, Sb or Bi, applying thereto by cathode sputtering in an inert atmosphere at least p initially free of oxygen a film of gold thin enough to be transparent, and heating to a temperature not exceeding 250 DEG C. Alternatively, a thin transparent layer of a protective material may be applied over the gold film when a temperature up to 350 DEG C. may be employed.  The protective material may be of the same or a different oxide and each oxide layer may be slightly less than quarter-wave.  The oxide layers may be formed by sputtering of the elemental material in argon containing a trace of oxygen and the metal layer in argon free from oxygen.  According to the Provisional Specification, the product may be laminated to another glass or other covering by means of a resin or other cement, the conductive film may be of silver and may be applied by evaporation, the oxides may be applied by dissolving a salt in collodion, applying a coating and burning off and the outer covering may be of ZnO.