baber/WOPTO huggingface dataset:
Patent GB-1382030-A (GB)
Title: Covers for conveyor belts
IPC: B29D29/00
Filed: 1971-08-18
Abstract: 1382030 Laminated conveyer belts COAL INDUSTRY (PATENTS) Ltd 18 Aug 1972 [18 Aug 1971] 38814/71 Heading B5N A fabric reinforced conveyer belt comprises as the cover thereof, a thermoplastic composition which comprises at least 10% of coal pitch, between 18 and 65% of a polymeric thermoplastic material compatible with the coal pitch, 1 to 20% of finely divided fibrous material, at least 10% of a plasticizer for the polymeric thermoplastic material and at least 0À2% of an anti-static agent, the percentages being by weight and based on the total composition. A coal pitch is defined as being a tar or pitch formed by the destructive distillation of coal, or a similar material formed by the extraction of soluble or solubilizable components of coal into solvents. The belt may be formed by coating sheets of fabric to form multiply belts with for example a polyvinyl chloride mixture and laminating the sheets together under heat and pressure, e.g. on a drum or on a stationary press, the thermoplastic composition for the cover being laminated therewith during or after lamination of the core. The polymeric thermoplastic material may be polyvinyl chloride, a copolymer of vinyl chloride with a suitable monomer, e.g. vinylidene dichlbride or vinylacetate, or a mixture thereof. The fibres are preferably organic fibres, e.g. cotton, cellulose, polyamide or polyester fibres, at least 75% by number thereof having a length of less than about 15 mm. The plasticizer may be an ester, e.g. a diester of an aliphatic or aromatic dicarboxylic acid, a phosphate ester or a low molecular weight diol-dicarboxylic acid polyester, many suitable plasticizers being specified. The anti-static agent may be a quaternary amminium salt, e.g. a tetraalkyl ammonium salt, a polyether, a long chain amine or amide, an oxyalkylated or polyoxyalkylated amine or a sulphonate, many such compounds being specified. The composition may also contain a suitable quantity of a material having similar properties to coal pitch, e.g. bituminous material formed from petroleum oil. Natural or synthetic rubber, e.g. a chloroprene rubber, an ethylene-propylene rubber, an isoprene rubber, a styrene-butadiene rubber, an acrylonitrilebutadiene-styrene rubber, a chlorosulphonated polyethylene rubber, a nitrile rubber or a copolymer of acrylonitrile with butadiene or styrene may be included in the composition as may a fire-retardant substance, e.g. a brominated organic compound or antimony trioxide alone or in admixture with a further fire-retardant substance, e.g. ammonium fluoroborate, dichlorane or a chlorinated wax, fillers, e.g. carbon black or chalk or extenders, e.g. chlorinated hydrocarbons.
Patent GB-911874-A (GB)
Title: Improvements in and relating to the production of reinforced bags
IPC: B65D33/02
Filed: 1960-11-14
Abstract: 911,874. Tobacco pouches. HAMMER, S. Nov. 14, 1960 [Nov. 21, 1959], No. 39102/60. Class 133.  Tobacco pouches having double walls and a closing flap, one made by inserting a stiffening sheet 7 between two foils 3, 4 forming the walls of the pouch and welding the two foils together along lines outward of the stiffening sheet, which has been welded or adhered to the foils prior to welding and severing to form the bag. The web 1 is folded as shown at Fig. 2, and the stiffening sheet 7 is fed into the folded web through a shoot 5 and then spot welded or adhered to the web by a member 9. After folding at 3, 4, 11, 12, the web is transversely heat sealed by a member 17. Instead of a folded web 1, a single sheet roll may be used and an appropriate folding operation added prior to the insertion of the stiffening sheets 7.
Patent GB-894597-A (GB)
Title: Apparatus and method for making a secondary image from an original or primary image having a periodic structure of lines or dots
IPC: G03C5/02
Filed: 1958-12-09
Abstract: 894,597. Optical filters. CANON CAMERA CO. Ltd. Dec. 9, 1958 [March 4, 1958], No. 39733/58. Class 97(1). A photographic filter comprises a flat parallel-sided transparent plate having on its surface a large number of small discrete spots formed from transparent material and being of equal size and thickness; the sum of the areas of the spots is substantially equal to the area of the uncovered part of the surface and the refractive index of the spots is such that, for a particular wavelength of light, the optical thickness of the spots differs by half a wavelength from the optical thickness of a layer of air of the same thickness. Apparatus for making a secondary image from an original which has a periodic structure is shown in Fig. 4 and comprises the original 3, the above filter 5, an objective lens 4, a half tone sheet 7 and a photo sensitive sheet 6; the arrangement being such that the mean diameter of the spots ° = 1#L/m, where # is the wavelength of the light, m is the lens magnification and L is the repetition frequency of the periodic structure of the original.
Patent GB-349956-A (GB)
Title: Manufacture of new condensation products of formaldehyde with aromatic sulphonamidesand n-aryl derivatives thereof, and their application
IPC: C08G12/24
Filed: 1929-12-31
Abstract: Crystalline compounds are prepared by heating an aromatic sulphonamide, or an N-aryl derivative thereof, with formaldehyde, or a reagent yielding formaldehyde, to a temperature not substantially exceeding 150 DEG  C. in the presence of an acid condensing agent, or by heating the sulphonamide &c. with the formaldehyde &c. to a temperature not substantially exceeding 150 DEG  C. and subsequently adding an acid condensing agent.  In an example, approximately equimolecular amounts of p-toluene-sulphonamide and paraformaldehyde are heated to 100-150 DEG  C., and when a clear liquid is obtained, there is added 0,1-3 per cent of sulphuric acid, or 0,5-6 per cent of zinc chloride, calculated on the sulphonamide; a crystalline product is obtained. The same product may be obtained by heating the reagents to 60-120 DEG  C. in acetic acid solution, and then adding 10 per cent of sulphuric acid or zinc chloride, calculated on the sulphonamide. Instead of p-toluenesulphonamide there may be used an N-aryl derivative thereof, or a mixture of o- and p-toluenesulphonamides, or benzene, xylene and naphthalene sulphonamides and their N-aryl derivatives.  The formaldehyde may also be supplied as a polyoxymethylene or an acetal, or as formaldehyde solution.  The products are useful as plasticizers for cellulose derivatives, such as cellulose acetate and nitrate, or as lacquer &c. ingredients.ALSO:Cellulose derivatives, such as cellulose acetate and nitrate, are plasticized by means of crystalline compounds prepared by heating an aromatic sulphonamide, or an N-aryl derivative thereof, with formaldehyde, or a reagent yielding formaldehyde, to a temperature not substantially exceeding 150 DEG C. in the presence of an acid condensing agent, or by heating the sulphonamide &c. with the formaldehyde &c. to a temperature not substantially exceeding 150 DEG  C. and subsequently adding an acid condensing agent.
Patent GB-1036958-A (GB)
Title: Linear travelling wave accelerator with focusing by uhf-field
IPC: H05H9/02
Filed: 1964-10-01
Abstract: 1,036,958. Linear travelling wave particle accelerators. CSF.-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Oct. 1, 1964 [Oct. 8, 1963], No. 39948/64. Heading H1D. A delay line structure for a linear travelling wave particle accelerator comprises a series of elements spaced apart along the beam path having an aperture symmetrical with respect to two orthogonal axes, the centre of the apertures being aligned along the axis of the accelerator to allow passage of the accelerated beam, wherein the shape of each of the apertures is elongated along one of the orthogonal axes, and the spatial position of successive apertures is shifted by a predetermined fixed angle from one to the next of the elements. The shapes of the apertures may be rectangular, elliptical, oval, or defined by two parallel lines joined by arcs of circles or by arcs of hyperbolas joined by arcs of circles (i.e. dumb-bell shaped). The shifting angle between adjacent apertures is equal to #/n, where n is any integer higher than unity. The elements may be diaphragms, plates, fingers or bars, and the invention can be applied to the delay line described in Specification 986,301. The beam is focused by the radio frequency field.
Patent GB-1283044-A (GB)
Title: Improvements in and relating to steam turbines
Inventor: SMITH ALLEN
IPC: F01D25/32
Filed: 1968-08-21
Abstract: 1283044 Steam turbines C A PARSONS & CO Ltd 5 Aug 1969 [21 Aug 1968] 39987/68 Heading F1T A steam turbine comprises means for extracting water from wet steam, there being a drainage area 4 in the turbine casing 2 located downstream of a row of rotor blades 1 and upstream of a row of stator blades 3, the drainage area comprising a plurality of circumferentially spaced elongated slots 5, the slots being disposed to lie in planes containing the axis of rotation of the rotor and being connected to a region which in operation of the turbine is at a lower pressure than the steam pressure in the region of the drainage area. (For Figures see next page)
Patent GB-1474227-A (GB)
Title: Measuring apparatus
IPC: G01B11/16
Filed: 1974-09-16
Abstract: 1474227 Measuring birefringence VISHAY INTERTECHNOLOGY Inc 16 Sept 1974 [17 Sept 1973] 40265/74 Heading G1A In an apparatus for measuring the birefringence of stressed materials 40, light from an incandescent source 31 passes as shown via a lens system 32, a polarizer 34, quarter wave plate 36 and a compensating birefringent plate 41 into the stressed material. The different areas of different degrees of stress will effect the polarization properties of the different wavelengths of the light passing through. The resulting radiation is split up into two sub-beams 47 and 48 by a semi reflector 45 after passing through a compensating birefringent plate 42, a quarter wave plate 37 a rotating polarizer 35 (that periodically modulates the light intensity) and a lens 44. Each sub-beam 47, 48 passes through a different wavelength filter 49, 50 to be received by a respective photo-electric device 52, 53. The detectors are connected to a phasemeter 55 that supplies a meter or an oscillograph 58 with two signals representative of the two different beam intensities.
Patent GB-1074876-A (GB)
Title: Improvements in spring-operated brades
IPC: F16D65/14
Filed: 1964-10-05
Abstract: 1,074,876. Brakes. ALIMANNA SVENSKA/ ELEIRTRISKA A.B. Oct. 5, 1964 [Oct. 8, 1963], No.40466/64. Heading F2E. In a brake wherein the braking member is applied by a spring and released by fluid pressure acting on a piston, the spring abuts a second member which is adjustable in the direction of movement of the piston, the second member also providing a stop for the piston in the disengaged position of the braking member. In a disc brake the brake member 23 is connected to the piston 4, the spring 6 abutting an end wall 9 adjustably located on a screw thread 10 in the cylinder 5. An adjustable stop 14 provided in the end wall limits the disengaging movement of the piston.
Patent GB-1425148-A (GB)
Title: Method of and devices for breaking the bond between metal and plastics material
IPC: H01B15/00
Filed: 1974-09-17
Abstract: 1425148 Unjoining VEREINIGTE ALUMINIUM-WERKE AG 17 Sept 1974 [19 Sept 1973] 40531/74 Heading B3V The bond between a metal and a plastics material is broken by subjecting a metalplastics composite to a reduced temperature at which marked embrittlement of the plastics material occurs and simultaneously or thereafter subjecting the composite to stress to cause the embrittled plastics material to separate from the metal. As applied to re-cycling material the bond may be broken between a screw closure cap and its plastic seal, a P.V.C. coating on aluminium sheet, a plastics sheath on copper wire or metal pipe, or a metal coating on plastics; coated wire netting may also be treated. The temperature of the composite may be reduced by liquid nitrogen or air, and the stress produced by ultrasonic waves, magnetic vibrations, hammerings, beating or cutting. In an example, Fig. 1, composites 2 in a rotating wire-mesh cylinder 1 are cooled by liquid nitrogen, &c. 4 and stressed by impact with steel balls &c. 3. The mesh may retain the metal and allow the separated plastics material to fall through. In another form, Fig. 2 (not shown), plastics coated sheet (6) is preferably transported by a belt (5) beneath a cooling source (7) and then beneath a beater (8).
Patent GB-1486315-A (GB)
Title: Key board transducer
IPC: H01G7/02
Filed: 1974-09-17
Abstract: 1486315 Piezoelectric elements KUREHA KAGAKU KOGYO KK 17 Sept 1974 [17 Sept 1973 22 Oct 1973] 40566/74 Heading H1E [Also in Divisions B6 and H2] In a keyboard transducer, a polymer film element A, which is piezoelectric at least in the portions between electrodes 2, 3 provided on its surfaces, is laid on a substrate sheet B in such a manner that windows or recesses 4 in the sheet B correspond in position to the piezoelectric portions, and the piezoelectric portions are secured to the sheet B, e.g. by way of adhesive material 8, so as to prevent a stress applied to one portion from being transmitted to another portion. The film A may be poly-γ-methylglutamate, polyvinylfluoride, or polyvinylidene fluoride with #-type crystal structure, and the substrate B may be metal, resin, rubber, wood, litho plate, concrete, or plaster board. The electrodes 2 are joined by electro-conducting adhesive 7 and contacts (5, Fig. 2, not shown) to a printed circuit (6) with output terminals (T 1 -T 9 ) on the substrate B, each terminal being connected to a F.E.T. circuit 10, 11; the printed circuit could alternatively be on the film A. In the embodiment of Fig. 3 (not shown) a polymer film (A 1 ) with electrodes (2a, 3a) is clamped (at 12, 13) between two substrates (B 1 , B 2 ) and buttons (16) may be pressed to locally distort a flexible sheet (15) whereby to increase the pressure of a gas or liquid in the window regions (4a) above the piezoelectric portions, thereby to stress the portions. In the embodiment of Fig. 4 (not shown), an apertured plate (D) is clamped to a substrate (B 3 ), and pressure is applied to a flexible shock absorber (C) and polymer film (A 2 ) through apertures (19) in the plate.
Patent GB-1155179-A (GB)
Title: Filter unit.
IPC: B01D29/54
Filed: 1966-09-13
Abstract: 1,155,179. Filter with indicator. BENDIX CORP. 13 Sept., 1966 [27 Sept., 1965], No. 40831/66. Heading B1D. Means for indicating the pressure differential across an inward flow edge type filter element 22 or for indicating the absence of such an element comprises a movable indicator pin 46 which is urged downwards towards washer 34 by spring 48, which washer is balanced by spring 38 resting on piston member 36. Piston member 36 is subjected to the said pressure differential across its two faces so that as the differential increases, member 36 moves downwardly to compress the element 22 with a reduced proportional movement of pin 46 opposite scale 50. If element 22 is absent pin 46 will be in its lowest position. The element 22 may be formed of paper or cellulose washers 30 or of a ribbon like material wound edgewise and is enclosed in a perforated cylinder 26. Specifications 922,322 and 9.84,145 are referred to.
Patent GB-987855-A (GB)
Title: Improvements in or relating to the synchronised operation of a number of hydraulic rams
Inventor: MISSELKE KURT ARTHUR ROBERT
IPC: F15B11/22
Filed: 1960-12-02
Abstract: 987,855. Fluid-pressure servomotor systems. PLESSEY CO. Ltd. Jan. 23, 1962 [Dec. 2, 1960], No. 41499/60. Heading G3P. A pump 2, Fig. 1, draws liquid from a reservoir 1 and supplies it through a relief valve or an accumulator 4 with a pressure or level switch, to a manifold 5 having four branches, each including a double-acting ram 6-9, pipes 14, 15 leading to a rotary valve 10-13 and connections to a line 16 returning to the reservoir. Each ram cylinder 6, Fig. 2, is open at each end to both the manifold 5 via restrictor 17, 18, and with its valve 10 through lines 19, 20; the latter lead to ports 19a, 20a in the rotary closure 21 while the seat 22 contains a port 23 open to the line 16. The seat 22 is attached to the ram rod 27 by a helical cam 25 which provides a rotary "follow-up" movement to the seat. The shaft 29 of the rotary closure 21 carries a sprocket 30, Fig. 3, which is coupled by a chain 34 to sprockets on the other valve shafts 31-33 and to a further sprocket 35 which is connected by a lost-motion device to a manual control whereby the rams are controlled each occupying an identical position at any one time. The ports 19a, 20a may be arranged with an overlap relative to the port 23 so that some liquid passes into both lines 19, 20 when the valves are in the neutral position. In a modification, the outlet from the ends of each ram cylinder 6a, Fig. 5, is controlled by a piston valve 38 having ports 39, 40 which lead to the line 16 via a restrictor 41; the valve casing is attached to the cylinder 6a, the ram 28a of which is fixed while the cylinder is movable. Each valve is connected by a rod 44 to a bar 45 joined by linkage and a lost-motion device to a manual control.
Patent GB-1426578-A (GB)
Title: Process for separating metals from mixtures thereof
IPC: C22B3/44
Filed: 1973-09-04
Abstract: 1426578 Separating metals from mixtures UNITED KINGDOM ATOMIC ENERGY AUTHORITY 2 Sept 1974 [4 Sept 1973] 41612/73 Addition to 1325870 Heading C1A The process of Specification 1,325,870 is modified in that the viscous mixture of a polymer and a solution or sol. of metal compounds is not formed into drops and thus is not in the form of drops when it is contacted with the reagents which effect the precipitation of one or more of the metals. This contact may be effected by streaming or pouring the reagents into the viscous mixture, or vice versa. Examples describe the separation of the following pairs of metals (the first-named in each pair being precipitated): Fe/Ni, Th/Cu, Zr/Ba, Fe/Co, Fe/Al, Fe/Cu.
Patent GB-1512260-A (GB)
Title: Cross-linked polyvinyl chloride resin
IPC: C08K5/37
Filed: 1975-10-10
Abstract: 1512260 Cross-linked PVC NIPPON ZEON CO Ltd 10 Oct 1975 [11 Oct 1974 26 March 1975] 41661/75 Heading C3P PVC is cross-linked by reaction with a dimercapto-s-triazine or a metal salt thereof, the triazine also containing a substituent selected from phenyl, naphthyl, morpholino, OOR1, -SR1, -NH2, -NHR2, or -NR3R4 as defined. A cross-linking assistant may be included, e.g. MgO, CaCO3, polyethylene glycol or the stearate of Mg, Ca, Ba or Cd.
Patent GB-1527981-A (GB)
Title: Recovery of gallium
IPC: C22B58/00
Filed: 1974-09-25
Abstract: 1527981 Recovery of gallium JOHNSON MATTHEY & CO Ltd 15 Sept 1975 [25 Sept 1974] 41688/74 Heading C1A [Also in Division C7] Recovery of Ga from a particulate solid by (a) preparing a mix of the solid with an excess of alkali, (b) sintering the mix, (c) leaching the sintered product obtained with an aqueous solution, (d) cementation of Ga present in resulting aqueous solution with Zn, Mn, Al or Mg and (e) collecting the Ga obtained by cementation. The alkali used in step (a) is preferably K 2 C0 3 , NaOH or KOH and the sintering of step (b) carried out at 500 C. to 800 C. in air for at least 10 minutes.
Patent GB-1195459-A (GB)
Title: Data-Collection System
IPC: G08B26/00
Filed: 1968-09-03
Abstract: 1,195,459. Electric selective signalling. SUSQUEHANNA CORP. 3 Sept., 1968 [18 Sept., 1967], No. 41804/68. Heading G4H. Data from a series of filed stations 12a-12n is transmitted to a central station 10 under the control of a distributer 18 at the station 10, the outputs 20a-20g of which are connected to sample the outputs of seven sensors in each of the field stations, each field station also having a bi-stable unit which when set enables the station to transmit its data, the bi-stables being serially connected to form a shift-register, the stepping of which enables the field stations in turn. At the end of a cycle when all the shift-register stages are reset a signal is applied to stop the clock 16. Seven binary signals are applied from the sensor circuits to seven gates which are enabled in turn by the signals from distributer 18. This is an 8-stage ring counter, the output of the eighth stage being connected to set the shift-register stage in the station A, and subsequently to set the following stages in turn. The outputs of the seven sampling gates in each field station are applied through an Or-gate to the return line. At the central station a parity circuit 28 adds an eighth bit if necessary to make the number of bits in the group odd or even, as required for the parity check. These signals are transmitted via an Or gate 34 out of the central station. Each of the bi-stable units in the several field stations is connected by a diode to a line 30, the diodes forming a gate so that when all the bi-stables are reset at the end of a complete scanning cycle, the signal on line 30 changes to stop the clock. It also resets a flip-flop 32, previously set by the start signal, to provide a signal on the "O" output which is applied to gate 34. By this means a steady mark signal is presented by the output line in periods between scanning cycles.
Patent GB-1138267-A (GB)
Title: Polymeric dicarboxylic acids of block copolymers of alpha-methyl styrene and conjugated diolefins and method of making the same
Inventor: DENNIS KENT SEDDENS
IPC: C08F8/00
Filed: 1967-09-13
Abstract: 1,138,267. Aryl-alkali metal addition compounds. DOW CHEMICAL CO. 13 Sept., 1967, No. 41824/67. Heading C2J. [Also in Division C3] Sodium alpha-methyl styrene trimer to hexamer is prepared by reacting alphamethylstyrene with potassium in the presence of anthracene and tetrahydrofuran, and adding a dispersion of sodium particles in decalin. The principal product is the tetramer with the alkali metal on each terminal carbon atom.
Patent GB-1404348-A (GB)
Title: Disazo pigments and processes for their manufacture and use
IPC: C08L23/00
Filed: 1972-09-08
Abstract: 1404348 Disazo pigments CIBA-GEIGY AG 8 Sept 1972 [10 Sept 1971] 41926/72 Heading C4P Novel disazo pigments of the formula where A is an optionally substituted 1,3- or 1,4-phenylene radical and R represents a benzene radical containing at least 3 non-watersolubilizing substituents, at least 2 of which are Cl, the two R radicals being the same or different, are obtained by coupling a diazo or diazoamino compound of an appropriate amine or amines with a bisacetoacetyl-m- or p-phenylene diamine in a molar ratio of 2 : 1. In one example coupling is effected in the presence of n-butyl sulphoricinoleate; and in another the reactants are suspended in DMF and glacial acetic acid and n-butyl nitrite in o-dichlorobenzene is added to effect coupling. The resulting yellow pigments are optionally subjected to an after-treatment by heating in an organic solvent and may be used for pigmenting high molecular weight organic material, e.g. cellulose esters, natural and synthetic resins, polyamides, polyurethanes and polyesters, and lacquers, paints and printing inks.