baber/WOPTO huggingface dataset:
Patent GB-406644-A (GB)
Title: Improvements in non-brittle sheets for safety glass and in their manufacture
IPC: C09J133/08
Filed: 1932-07-21
Abstract: A transparent cellulosic sheet is coated with a polymerized acrylic ester.  The polymerized ester is extruded (for example as a solution in acetone) on one side of a strip of the material sold under the Registered Trade Mark "Cellophane," or of cellulose acetate, and when the coating is dry, the other side is similarly coated. Alternatively both sides may be coated simultaneously by passing the strip vertically between two extrusion slots, or the coating may be formed by spraying or dipping.  Incompletely polymerized acrylic ester may be applied, and the polymerization completed subsequently. According to the Provisional Specification, any polymerization or condensation product, such as a polyvinyl compound (e.g. polyvinyl acetate), or an alkyd resin may be applied, the basic sheet may be of celluloid, and different condensation or polymerization products may be applied successively.
Patent GB-373476-A (GB)
Title: An improvement in ball or float valves or cocks
IPC: F16K31/26
Filed: 1931-07-20
Abstract: 373,476. Ball and float valves. KING, W. M., 4, Vivian Street, Wellington, New Zealand. July 20, 1931, No. 20701. Convention date, May 29. [Class 135.] Relates to ball and float 'valves for water tanks wherein the water supply passes a valve seating 2 adapted to be closed by a valve 12 having grooves or flutings in its stem below the valve seat, the stem being operated by a pivoted float-controlled lever 18. According to the invention the passage in which the valve stem is guided has on opposite sides grooves or flutes 13 and the valve stem has grooves or flattened portions 15 the adjacent grooves 13, 15, forming openings through which water passes to the tank when the valve is open. As shown the valve 12 seats on a rubber ring 3 and the stem has a reduced portion 21 and a slot 16 for the cam-like end 20 of the operating lever 18. The sleeve 1 housing the valve stem is screwed at its upper end to a casing 4 having a restricted orifice 9 and a screwed connection 5 for the supply pipe and at its lower end the sleeve 1 is screwed to receive a discharge pipe 25. The float may comprise a vessel 27 with an open bottom so that as the water in the tank 8 rises the air trapped in the vessel 27 gives buoyancy to the float.
Patent GB-676374-A (GB)
Title: Improvements in or relating to the production of organic fluorine-containing compounds
IPC: C07B39/00
Filed: 1949-08-10
Abstract: Organic fluorine compounds of high thermal stability are produced by a process which comprises reacting an organic compound containing hydrogen with chlorine trifluoride in the presence of antimony or an antimony containing compound as catalyst. Halogenated organic material prepared by reacting an organic compound with chlorine trifluoride until no more reaction ensures according to the process of Specification 633,678 may be employed as starting materials. Products having lubricating properties may be obtained.  In examples: (1)-(3) halogenated products obtained by reacting white spirit, decalin and cetane respectively with chlorine trifluoride according to the process of Specification 633,678, are treated with further chlorine trifluoride in the presence of (1) antimony powder, (2) and (3) antimony pentochloride.  The products are washed with aqueous caustic soda and sulphuric acid and after distillation the acidity produced by passing air through the heated material is determined.
Patent GB-726148-A (GB)
Title: New carbocyanine dyes, methods for making them and photographic silver halide emulsions containing them
IPC: G03C1/18
Filed: 1953-07-28
Abstract: Carbocyanine dyes of the general formula <FORM:0726148/IV (c)/1> are described, wherein R and R1 represent substituted or unsubstituted alkyl groups, R2 represents hydrogen, or a substituted or unsubstituted alkyl or aryl group, R3 represents an acyl group, or, if R2 represents H, R3 may also represent H, X represents an anion, and Z and Z1 complete nuclei of the benzthiazole or naphthathiazole series.  R and R1 may be alkyl groups of 1 to 4 carbon atoms, benzyl or b -phenylethyl; R2 may be an alkyl group of 1 to 8 carbon atoms, a benzene ring (which may be substituted with chlorine, bromine or alkoxy radicals), o-, m-, or p-tolyl, or naphthyl; and R3 may be an acyl group of a carboxylic acid containing 2 to 6 carbon atoms, or it may be benzoyl, o-, m-, or p-toluyl or o-, m-, or p-methoxybenzoyl. The benzene ring of the benzthiazole may contain substituents such as methyl, ethyl, chloro, bromo, methoxy, ethoxy, phenyl and dimethylamino.  The dyes wherein the meso-substituent is -NH2 may be prepared by the reaction of ammonia on the corresponding mesothioalkyl or thioaryl compound.  The dyes containing an acyl group may be prepared by heating together a carboxylic anhydride and the corresponding dye having an -NHR2 substituent in the meso position, preferably in a solvent such as pyridine, quinoline or acetic acid.  The dyes containing a meso -NHR2 group may be made from the corresponding thioalkyl or thioacyl compounds by reacting them with a primary amine of the formula R2.NH2, preferably by heating the reactants in a solvent such as pyridine or quinoline.  Examples are given of the preparation of dyes according to the invention and of the preparation of the intermediate dyes having a meso -NHR2 substituent. Specifications 663,440 and 684,622 are referred to.
Patent GB-745135-A (GB)
Title: Improvements in the cooling arrangement of electric contacts of heavy-current mechanical current converters
IPC: H02M1/20
Filed: 1952-08-20
Abstract: 745,135. Switch contacts. LICENTIA PATENT-VERWALTUNGS-GES. Aug. 20, 1952 [Aug. 20, 1951],. No. 20921/52. Class 38(5) In a heavy-current mechanical currentconverter, the contacts are cooled by an artificially produced gas stream applied externally to a member associated with the or each stationary contact in such a manner that the gas does not come into direct touch with the contact faces of the contacts. In the arrangement shown, a spring biased bridging contact 8 co-operates with fixed contact pieces 5, 6 on carriers 3, 4 fixed to conductors 1, 2. Attached to the carriers 3, 4 are cooling bodies 11, 12 with ribs 13 over which the gas is directed as indicated. Good conductivity between the carriers 3, 4 and the bodies 11, 12 may be obtained by the use of grease containing metal powder between their mating surfaces. The quantity or velocity of the gas may be controlled in dependence on the load or temperature of the contacts. In an alternative arrangement the bodies 11, 12 may be omitted and the fins 13 may be directly soldered to the conductors 1 and 2. Reference is also made to the application of the gas stream to the carriers 3, 4 at points remote from the contacts.
Patent GB-1109761-A (GB)
Title: Apparatus for separating solid foreign matter from leaf material
Inventor: HOPPER FREDERICK AISTON
IPC: B03B4/02
Filed: 1964-05-21
Abstract: 1,109,761. Pneumatic separators. MARSHALL'S TEA MACHINERY CO. Ltd. 20 Aug., 1965 [21 May, 1964], No. 20963/64. Heading B2H. Apparatus for separating foreign matter from tea leaf comprises a trough 1 having an inclined floor 2, ridge portions 15, means for reciprocating it and means for supplying an upward current of air. Material to be separated is fed through a hopper 13 on to the upper end of the trough which is supported on leaf springs 4, 5 for reciprocation by an eccentric 10. Air delivered by a fan 21 is directed through ducts 18 and apertures (17), Fig. 3 (not shown), in the floor 2 for lifting the tea leaf over the ridge portions 15 for delivery over the end 7 of the trough. The heavy foreign material accumulates in the spaces between the ridge portions for periodic removal and any material falling through the apertures (17) may be removed through hinged doors (22). In another embodiment, Fig. 4 (not shown), the air is supplied via a duct (24) to the discharge end only of the trough. If desired, links (26) may be employed instead of leaf springs. In this arrangement, any material falling through the apertures (17) is collected in a tray (29).
Patent GB-1219194-A (GB)
Title: Electroplatable polyolefins
IPC: C08K5/38
Filed: 1968-05-03
Abstract: 1,219,194. Polyolefin compositions. AVISUN CORP. 3 May, 1968 [3 May, 1967], No. 21083/68. Heading C3P. [Also in Divisions C6-C7] Polyolefin compositions suitable for plating comprise 0À1 to 2 weight per cent, based on the polymer, of a compatible surface-active agent. Specified polymers are of thylene, propylene, butene-1, 3-methylbutene-1, 4-methylpentene-1 and styrene, and copolymers of ethylene and propylene and of olefins with acrylates, methacrylates, vinyl esters and acrylonitrile. The compositions may contain compatible sulphur compounds, e.g. dialkyl thiodialkanoates, and conventional fillers, e.g. asbestos and glass fibres, carbon and silica; and may be shaped into articles which may be electroplated. Preferred surface-active agents are condensates of ethylene and/or propylene oxides, optionally with alkyl phenols, fatty alcohols, alkylmercaptans, fatty acids and partial esters thereof with polyhydric compounds. Examples describe compositions comprising (1) polypropylene and isooctylphenol/ethylene oxide condensates, optionally together with (2) calcium stearate and dilauryl or distearyl thiodipropionate, and (3) talc.
Patent GB-597438-A (GB)
Title: Improvements in or relating to milling and like rotary cutters
IPC: B23C5/22
Filed: 1945-08-18
Abstract: 597,438. Milling-cutters. WHITICKER, E., CHAPMAN, P. E., and RUSTON & HORNSBY, Ltd. Aug. 18, 1945, No. 21113. [Class 83 (iii)] In an inserted blade milling-cutter, the blades 9 are secured in wedge-shaped slots 8 by transverse cotters 7, the axes of the cotter holes 5 and of the slots 8 being at a small angle to each other to provide the wedging action. The axis of each cotter hole is parallel to the axis of rotation and each slot is inclined at an angle a, which may provide all or part of the negative rake angle e. The wedge formation of each slot may be provided by both walls of the slot or the wall adjacent the cotter hole may be radial ; the bottom 10 of the slot is parallel to the axis of rotation. The cotters 7 have a flat tapering face inclined at the same angle a as the slots. The body has recesses 16 adjacent to each blade to permit the escape of chips and is slotted at 2 and 3 for securing to the driving-spindle by bolts passed through holes 4.
Patent GB-166047-A (GB)
Title: Improvements in or relating to stop-motions for nap-raising and other machines for operating on or dealing with lengths of textile and other fabrics
IPC: D06C11/00
Filed: 1920-07-13
Abstract: 166,047. Cansell, W. E. July 13, 1920. Feeding webs.-A roller &c. a, Fig. 1, which is normally rotated by lengths of fabric c<1>, c<2> passing thereover in a nap-raising or other machine, is provided with a helical gripping-surface b, formed of perforated metal plates, velvet, &c., the remainder of the cylindrical surface being smooth. If one of the lengths of fabric tears, the roller ceases to rotate as soon as the other length of fabric comes opposite the smooth surface, and stops the machine in the usual way. The roller may be loaded by a brake device, as described in Specification 145,258, or by other means. The continuous helix may be replaced by stepped sections. Fig. 6 is a developed plan of such a roller adapted to deal with four lengths of fabric. The gripping-surfaces may be detachable members e, Fig. 7, taking into grooves d on the surface of the roller, so that the roller can be adapted to operate with any number of lengths of fabric as required.
Patent GB-960871-A (GB)
Title: Xerographic recording media and manufacturing process therefor
IPC: G03G5/147
Filed: 1960-06-16
Abstract: 960,871. Electrophographic plates. RANKXEROX Ltd. (Haloid Co.). June 16, 1960, No. 21143/60. Heading H1K. An electrophotographic plate comprises a conductive base and a layer of photoconductive insulating particles incorporated in an insulat. ing binder overcoated with a transparent insulating layer. Suitable materials for the insulating layer are polyvinyl alcohol, polyvinyl chloride, polyvinyl acetate, polyvinyl formal, polyester resins, cellulose acetate, cellulose acetate butyrate, ethyl cellulose, epoxy resins, polyurethanes, and polymerized alkyl esters of acrylic and methacrylic acids. Preferably the overcoating is applied from a solution in a solvent in which the binder is insoluble. If the binder is a thermoplastic it may be rendered insoluble by curing to a thermosetting condition after application to the base. The solution may be applied by spraying or dip rolling, with an air knife or doctor blade, or by dipping the plate into the solution and then withdrawing at a constant rate. A typical plate is produced by coating a solution containing 2.5 parts by weight zinc oxide, 1 part styrenealkyd copolymer, 3 parts toluene, and preferably Rose bengal on an aluminium backing to form a layer 1 mil. thick. After curing at 140‹ F. for half an hour a 1 Á thick overcoat is applied from a solution of 10 parts polyester and 90 parts isocyanate in 500 parts of " Cellosolve " (Registered Trade Mark) acetate. The overcoating resin is subsequently cured by storing in a high humidity atmosphere. Plates comprising a coating of photoconductive zinc oxide in silicone resin and those comprising selenium in a binder, as described in Specification 693,112 may be similarly overcoated. The overcoating provides a smooth durable surface from which developer may be readily removed after use thereby enabling the plate to be used repeatedly without deterioration.
Patent GB-299288-A (GB)
Title: Improved means for washing, drying and polishing tumblers, cups and like articles
IPC: A47L15/00
Filed: 1927-10-19
Abstract: 299,288. Griffiths, A., and Kleenglas, Ltd. Oct. 19, 1927. Divided on 296,581. Cups, drinking-vessels, and cylindrical articles. washing, cleaning, and drying.-In a machine for cleaning individually tumblers and like articles, employing squeegees a carried by a rotatable stem f and adapted to clean the interior and exterior of the vessel, a laminated or plate spring j, is interposed between the stem f and each carrier c of a squeegee operating upon the interior of the vessel. The plate c is provided with a lug g for engagement in a slot in the stem f, the lug being provided with rounded edges to permit rolling movement of the plate c. A screw h in the stem f passes through a hole : i in the lug g. The spring is apertured for the passage of the lug g and is provided with rounded knobs for engagement in slots in the plate c and stem f. The squeegees for operating upon the outside of the vessel are carried by levers o, which are secured to a base plate it and are engaged by springs r so as to press the squeegees against the vessel. The stem which is secured to the base plate u, may be hollow and perforated to conduct liquid within the vessel. Specification 248,080 is referred to.
Patent GB-1071573-A (GB)
Title: Improvements in and relating to methods of manufacturing crystals
IPC: C01B31/36
Filed: 1964-05-22
Abstract: A crystal body of cubic silicon carbide is manufactured by heating a chamber having a wall of SiC and/or Si and C containing an inert gas atmosphere (e.g. argon) to above 2600 DEG  C. and then cooling to 1900 DEG  C., whereby SiC in a cubic crystalline form is deposited. The SiC crystals may be formed in the hexagonal crystal form on the wall, e.g. from monomethyltrichlorosilane and hydrogen on a heated carbon surface at a temperature of not more than 2600 DEG  C. and subsequently heated to above 2600 DEG  C., preferably 2650-2750 DEG C., to form cubic crystalline SiC.  A doping substance may be added to the atmosphere, e.g. nitrogen (a donor) and/or aluminium (an acceptor) to give n- and/or p-type semiconductive crystals respectively.  The cubic SiC crystals may be integral with a hexagonal crystal of SiC.  Silicon crystals of conical shape may also be formed during cooling and may be integral with the body of cubic SiC or the body of cubic SiC integral with hexagonal SiC.
Patent GB-371709-A (GB)
Title: Improvements in or relating to the manufacture of ammonia
IPC: C01C1/08
Filed: 1931-07-24
Abstract: In the production of ammonia, a mixture of crude alkali bicarbonate obtained directly from the precipitation apparatus of the ammonia-soda process is mixed with carboniferous material and cyanidized by nitrogen at high temperature, the resulting cyanide being hydrolysed to produce ammonia.  The ammonia generated during the cyanidization is recovered, say by being returned to the ammonia-soda process.  The ammonia produced by the hydrolysis may also be so returned being converted into ammonium chloride. Specification 347,426 is referred to.
Patent GB-978097-A (GB)
Title: Improvements in or relating to the removal of solids or liquids from a stream of air
IPC: B01D45/02
Filed: 1962-06-02
Abstract: 978,097. Purifying charge. L. J. BEDDOW. June 4, 1963 [June 2, 1962], No. 21345/62. Heading FIB. [Also in Division B1] In a device for removing solids or liquids from a stream of air passing through the device, e.g. to an I.C. engine carburetter, the stream of air together with an atomized liquid picked up from within the device impinges on a baffle which retains the liquid and allows the air to pass from the device through flanged orifices. When used in conjunction with an I.C. engine carburetter, the device also acts as a silencer. Inner housing 18 rests on, but is not attached to, base 17; the lower peripheries of the housing 18 and inlet shroud 16 lie beneath the surface of a liquid 11. The liquid is normally oil, but if the impurity to be removed is acidic, the liquid is basic, and vice versa. Air enters inlet 12 and passes via the shroud 16 through the liquid and into chamber 10. The air leaves chamber 10 and impinges on the baffle 20; the liquid agglomerates on the baffle and drains back for re-use, and the air passes through flanged orifices 21 to an outlet chamber 13 and outlet 14. A drain plug 24 is provided for draining and replacing the liquid.
Patent GB-1082012-A (GB)
Title: Sensitive photographic materials and emulsions therefor
Inventor: BYERLEY BERNARD LEONARD JOHN
IPC: G03C1/76
Filed: 1964-05-23
Abstract: 1,082,012. Protective layers. KODAK Ltd. July 28, 1965 [May 23, 1964], No.21405/64. Heading G2C. A hydrophilic colloid silver halide emulsion layer for use as a protective matte layer either coated on the front or the back of a photographic light-sensitive material comprising a supported gelatino silver halide emulsion layer with a hydrophilic backing layer is obtained by precipitating the silver halide grains of said protective layer from a water-soluble silver salt and a watersoluble halide in the presence of a bismuth salt so that the grains are virtually insensitive to light compared with the photographic material on which they are coated. Athallium salt may also be present during the precipitation and produces spherical grains of mean grain diameter at least 0À5Á. If the photographic material is a colour material the protective layer must be fogged e.g. by sulphur compounds, ammonia and excess silver nitrate, alkaline formalin or thiourea dioxide and the silver grains of the protective layer are silver chloride.
Patent GB-580115-A (GB)
Title: Improvements in or relating to transmitting or receiving aerials
IPC: H01Q21/24
Filed: 1944-04-26
Abstract: 580,115. Wave guides. CORK, E. C., and MANIFOLD, M. BOWMAN-. April 26, 1944, No. 21410. Divided out of Complete Specification of 580,090 [Class 40 (v)] Radiating or receiving apparatus comprises a hollow conductor 10, the cross-section of which has one dimension large relative to the other, one end 12 of the conductor being closed and the wave-exciting or pick-up wire 16 being situ. ated at the open end 11. The wire 16 extends in the direction of the smaller dimension of the hollow conductor, and is formed as the unenclosed extremity of the inner conductor 15 of a coaxial feeder 13. The hollow conductor's dimensions may be in the ratio 12 to 1, and the smaller dimension may be one-eighth of a wavelength or less. In order to attenuate currents on the rim or external surface of the conductor 10, a sheath 17 is provided enclosing the conductor and connected thereto at the rear end, its front end being open. The space within the conductor 10 may be filled with solid dielectric material. Specifications 580,090 and 580,114 are referred to.
Patent GB-678221-A (GB)
Title: An improved method of and apparatus for producing a protected metal article
IPC: H01B1/00
Filed: 1949-08-17
Abstract: 678,221. Edge grinding. ARNOLD, J. C. (Robertson Co., H. H.). Aug. 17, 1949, No. 21436/49. Class 60. [Also in Group VIII] A trimmer device 58 for removing excess material projecting beyond the lateral edges of laminated strip material frictionally fed from bonding rolls 25, (see Group VIII), comprises grinding wheels 59, 60, controlled by adjustable springs 64.
Patent GB-1167063-A (GB)
Title: Improvements in or relating to Photoelectric Semiconductor Devices.
IPC: H01L31/167
Filed: 1967-05-09
Abstract: 1,167,063. Photo-electric information transmission path. SIEMENS A. G. May 9, 1967 [May 10, 19661, No. 21463/67. Heading G1A. [Also in Division H1] The gate electrode and insulation of an IGFET are made optically transparent so that the output of the transistor may be modulated by light reaching the channel formed by a standing gate bias. In one unit light reaches the transistor through a lens in its housing. In another a light emitting diode is mounted in a common housing with the transistor. The semi-conductor may be silicon, germanium, or gallium arsenide. The gate insulation may be silicon, silicon monoxide, calcium fluoride, or alumina. The gate electrode may be tin oxide, indium oxide, calcium oxide, or zinc oxide - a circumferential contact body is provided. A gallium arsenide diode may be used with a silicon transistor.
Patent GB-262026-A (GB)
Title: Cycle stand
IPC: B62H3/00
Filed: 1926-09-01
Abstract: 262,026. Stoeckermann, J. H. Sept. 1, 1926. Stands.-In cycle stands of the type comprising a head-piece 1 rotatable in the upper end of the stand tube, a bearer bar 2 rotatably adjustable in the head-piece 1 and formed at its ends with bends 3, 4 to engage the cycle frame, and a screw 7 and wing-nut by which a clamp 9 is engaged against the cylindrical part of the crank bracket, the screw spindle 7 is pivoted on the bearer bar 2 at the side of the head-piece, is bent at its upper end, and is provided with a tubular member 8 having a clamp 9, which is adapted to be placed on the left-hand part of the crank bracket and is clamped by a wing-nut 12. In a modification, the screw spindle 7 is straight, and passes through a boss rotatably mounted on the bearer bar.