baber/WOPTO huggingface dataset:
Patent GB-899699-A (GB)
Title: Improvements in or relating to the purification of acetylene
IPC: C07C7/171
Filed: 1961-02-14
Abstract: Acetylene is purified, to remove unsaturated hydrocarbons having more than two carbon atoms, by contact with sulphuric acid containing up to 5% by volume of the sulphuric acid of p-toluene sulphonic acid. The sulphuric acid is preferably of about 95% concentration and the gas is scrubbed with the acids at 20 DEG C.-35 DEG C.  Belgian Specification 582,826 and French Specification 716,882 are referred to.
Patent GB-994679-A (GB)
Title: Electrophotographic material
IPC: G03G5/09
Filed: 1963-02-11
Abstract: 994,679. Electrophotographic materials. KALLE A.G. Feb. 11, 1963 [Feb. 17, 1962], No. 5550/63. Drawings to Specification. Heading H1K. The single photoconductive layer of an electrophotographic material contains a mixture of coloured substances which is colour compensated in such a fashion that the layer appears achromatic. The coloured substances may be inorganic or organic photoconductors for example cadmium sulphide, oxazoles, azomethines, or triazines), optically sensitizing dyestuffs, pigments, fillers, or dyestuffs added merely as colour compensators. Good results are obtained with white photoconductors or photoconductor mixtures (for example, using zinc oxide, titanium dioxide, zinc sulphide, oxadiazoles, triazoles, or imidazoles) and particularly good results are obtained when a dyestuff sensitizer used with these is colour compensated by another dyestuff sensitizer. The photoconductive layer is prepared in the normal way and may contain resinous binders. A list of suitable binders is given. A list of common dyestuff sensitizers is given and the specific electrophotographic materials described use a colour compensated mixture of two or three of these in conjunction with zinc oxide and a silicone resin binder. In one of the examples the support is specified as being of paper.
Patent GB-875051-A (GB)
Title: Aminodiboron compounds and method of making same
IPC: C07F5/02
Filed: 1960-02-17
Abstract: A tetraaminodiboron is made by reacting a compound of the formula B2(NR2),4, where R is a monovalent aliphatic or cycloaliphatic organic radical having at least one hydrogen atom on its a -carbon atom, with a compound of the formula R12NH or R11NH2, where R1 is a monovalent aliphatic or cycloaliphatic radical having at least one hydrogen atom on its a -carbon atom or a phenyl radical or substituted phenyl radical having hydrogen atoms in the ortho-positions, or R12NH is piperidine, and R11 is an alkyl radical, with not more than 18 carbon atoms or a phenyl or substituted phenyl radical, the boiling point of the amine R2NH which corresponds with the reactant B2(NR2)4 being lower than that of the amine R12NH or R11NH2.  The tetraaminodiboron reactants B2(NR2)4 are described and claimed in Specification 868,191.  It is preferred to use tetra(dialkylamino)diborons whose alkyl radicals have from 1 to 3 carbon atoms.  A number of amine reactants are specified.  The transamination may be catalyzed by ammonium chloride, bromide or sulphate, or an amine salt of hydrochloric, hydrobromic, sulphuric or trifluoracetic acid.
Patent GB-670954-A (GB)
Title: Improvements in free-piston internal combustion engines
IPC: F02B71/00
Filed: 1948-02-25
Abstract: 670,954. Engine stop-gear. BALDWINLIMA-HAMILTON CORPORATION. Feb. 25, 1948 [Dec. 26, 1944], No. 5584/48. Class 122(iv) [Also in Group XXVII] In an opposed-piston free-piston internalcombustion engine having piston synchronizing means between the opposed pistons comprising facing racks meshing with a common pinion and having a fuel injection system, the common pinion is mounted for yieldable movement to one side or the other and is arranged to operate means which interrupts the engine fuel injection means whenever a predetermined yielding movement of the pinion mounting means takes place in response to out-ofphase operation of the engine pistons. Fig. 1 shows an opposed-piston free-piston internal-combustion engine in which rack bars 8, 9 are connected respectively to righthand and left-hand compressor pistons 4 forming part of opposed free-piston assemblies. Each rack bar meshes with a pinion 11 which is mounted, Figs. 2 and 3, in a carriage 13 supported in a frame 66, bolted to the side of the engine cylinder, in guideways 65 in which it can slide against the action of springs 71 which tend to keep it in a central position. The springs act through pads 68 which engage adjustable screws 69. The rack bars and the pinion operate in the usual manner to synchronize the opposed free-piston assemblies. If an unbalanced force should arise, due, for example, to the sticking of one of the freepiston assemblies, then the pinion can be displaced with its carriage. If it should be displaced to the right it will normally after a predetermined movement actuate a rod 75 through which it opens a valve 55, Fig. 1, and allows fuel pressure from a pump 52 to actuate a piston 45, Fig. 6, which withdraws a locking pin 43 from a sleeve 33 and allows a spring 35 to move the sleeve to the right and through the medium of a rod 30 cut off the fuel supply to the engine by actuating a rack bar 22 of a fuel pump 15. A similar sequence of operations takes place if the carriage is displaced to the left. A member 36 slidable on the rod 30 effects manual control of the fuel supply. In a modification the carriage 13 operates a lever having opposed arms each of which directly actuates its own valve in the fuel supply pipe to the fuel injector to release the fuel injection pressure. In another modification the carriage operates electrical contacts which are in circuit with a solenoid which withdraws the pin 43 and in a still further modification the solenoid operates directly on the rack bar of the fuel injection pump to cut off the fuel supply.
Patent GB-1436983-A (GB)
Title: Flow energising means for pneumatic pipeline conveyors
IPC: B65G51/12
Filed: 1974-02-07
Abstract: 1436983 Boosting pneumatic conveyance BRITISH HYDROMECHANICS RESEARCH ASSOCIATION 24 Jan 1975 [7 Feb 1974] 05629/74 Heading B8A A device for boosting air flow in a pneumatic conveyer comprises a transfer pipe 1 for capsules 14, a fan 3 in a by-pass line 2, and a valve 6 which allows the passage of articles but prevents the back flow of air. The valve may comprise a flap valve or two sector members which can be pivoted out of the pipe 1.
Patent GB-766086-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L9/14
Filed: 1955-02-25
Abstract: 766,086. Suction cleaners; filter bags. LEWYT CORPORATION. Feb. 25, 1955 [April 22, 1954], No. 5728/55. Drawings to Specification. Classes 8(1) and 8(2) A vacuum cleaner is provided with a filter bag having an air impervious area so located that substantially all the air entering the bag through its inlet opening impinges first on the impervious area. The air impervious area may be material secured by its edges to the edges of the porous material, material overlaying the porous material or a coated or impregnated area of the porous material. Specification 760.275 is referred to.
Patent GB-1483182-A (GB)
Title: Cryogenic fluid storage and supply system with all-attitude gas vent means
IPC: F17C6/00
Filed: 1975-02-11
Abstract: 1483182 Venting cryogenic vÞssels UNION CARBIDE CORP 11 Feb 1975 [18 March 1974] 5854/75 Addition to 1427354 Heading F4P The dispensing containers of the cryogenic fluid supply system described and claimed in parent Specification have additional all-attitude gas venting means which includes a first pressure relief valve 32 located between vaporizer 26 and flow control valve 31, a second relief valve 36 which is set to vent gas at a pressure lower than that of valve 32 and which is located in a branch conduit 34 leading from conduit 18, and a further vaporizer 35 upstream of valve 36, the second valve 36 being constructed to vent gas at a rate of from between 3 and 25 times the normal evaporation rate, and preferably between 5 and 20 times, and the vaporizer 35 having a heat transfer capacity not greater than one-third, and preferably less than one-fifth, of the vaporizer 26, this heat capacity being sufficient to vaporize cryogenic liquid at a rate from 1À04 to 1À30, and preferably from 1À08 to 1-25, times the maximum venting rate of second relief valve 36. A restrictor 36a is associated with valve 36. Thus, whatever the attitude of container 10, gas will be vented in a gaseous form, the venting rate being increased at the higher pressure level. A high-pressure bursting disc 38 is also provided. A practical portable assembly incorporating the above system is also described (Figs. 5 to 7, not shown).
Patent GB-1380919-A (GB)
Title: Hardening agent compositions for synthetic resins
IPC: C08J3/00
Filed: 1971-03-03
Abstract: 1380919 Stable thermosetting resin adhesive compositions BORDEN (UK) Ltd 14 Feb 1972 [3 March 1971] 5952/71 Heading C3R An acid-hardenable thermosetting resin adhesive composition contains as catalyst an ammonium salt of an acid of dissociation constant exceeding 10<SP>-2</SP> and sufficient of a carbonate to retard gelation at room temperature while permitting gelation on heating Suitable resins include urea-formaldehyde resins and thiourea- or melamine-modified urea-formaldehyde resins. Suitable ammonium salts are the chloride and sulphate, in amounts 0À5-5 wt. per cent of the resin. Suitable carbonates are those of Ca, Na, K or Ba, in amounts 0À1-1 wt. per cent of the resin. In the examples 2 wt. per cent of NH 4 Cl and 0À1 0À2 or 0À3% of CaCO 3  is added to a fast- or slow-setting VF resin.
Patent GB-242849-A (GB)
Title: Improvements in folding mechanism
IPC: B41F13/60
Filed: 1925-03-04
Abstract: 242,849. Hoe & Co., Ltd., R., (Hoe & Co., Inc., R.). March 4, 1925. Folding paper. - Rotary folding-machines are provided with means for automatically controlling t he sheet-taking devices to compensate for changes in speed consequent on an adjustment of the control'er of the driving-mechanism. The apparatus is described as applied to a rotary perfecting- machine from which the web is fed to a rotary folder adapted to cut and fold sheets from the web. In the form shown in Fig. 1, the operation of the controller 20 of the driving-motor energizes, through contacts 30 - - 35 and a contact maker 36. a progressive solenoid 23 which causes a core 46 to rise as the contact maker 36 descends. A wedge 49, carried by the core 46, adjusts, through a second wedge block 51 and a spring-controlled rod 41, a cam 16 loose on the shaft 2 of the folder, thereby modifying the time of operation of the sheet-taking pins 9, 10 with respect to the tucking-blade 6. In a modification, the rod 37 of the controller is provided with a piston which adjusts the cam through hydraulic means.
Patent GB-420126-A (GB)
Title: Improvements in cutting machines for slicing meat and the like
IPC: B26B7/00
Filed: 1934-02-23
Abstract: 420,126. Hand cutting - appliances. PAOLINI, M., 3, Scala Feroli, Trieste, and PERCO, F., Lucinico di Gorizia, both in Italy. Feb. 23, 1934, No. 5991. Convention date, Feb. 23, 1933. [Class 5 (i)] [See also Groups VI and VIII] A power-driven hand tool for slicing or carving comprises a handle 1 enclosing eccentric gear on a shaft 2 which is coupled, e.g., by a flexible shaft, to a source of power, the occentric gear being arranged to reciprocate a knife blade or blades 10 guided at one end in the handle and at the other end in a head 18 which is spaced from the handle 1 by a bridge piece 19. The slice thickness is determined by a roller 23 which bears on the surface of the meat and is adjustable away from and towards the knife blade by set screws 25. As shown in Fig. 3, one knife blade is provided, and balancing is effected by a reciprocating weight 13 actuated, counter to the knife reciprocations, by an eccentric 4 placed between two eccentrics 6 which are coupled by rods 7 to the guide member 9 to which the knife is secured. When more than one knife is provided, the reciprocations thereof are arranged to effect balancing. A lubricating opening 16 is closed by a screw cap 17.
Patent GB-1000251-A (GB)
Title: Improvements in or relating to loudspeakers
IPC: H04R7/12
Filed: 1960-08-19
Abstract: 1,000,251. Loudspeakers. H. M. HOWARD. Nov. 17, 1961 [Aug. 19, 1960], No. 6041/60. Heading H4J. A loudspeaker comprises a driving unit 9 (Figs. 1, 2) flexibly connected to two (or more) sound radiators 1 between which is an air space, each sound radiator consisting of two or more rigid panels 2, 3 flexibly connected together. The loud speaker also includes a substantially air-impervious cover 12 formed at least in part of compliant material and restricting movement of air into and out of the air space whilst permitting limited vibrational movements of the panels 2, 3 in response to vibration of the driving unit 9. Portions of the compliant material are held under tension over the panels 2, 3. The panels 2, 3 of each radiator are joined by flexible connectors 4 and are secured by flexible connectors 6 and 7 to an anchorage 5 and a support member 8 respectively. The support member 8 carries the driving unit 9. In operation, vibration of the driving unit 9 is transmitted to the sound radiators 1 to provide transverse movements substantially at right angles to the axis of movement of the driving unit. The cover 12 may be of close woven material such as silk or cambric. The sound radiators 1 are joined to one another at their side edges by resilient strips 13 which hold layers of non-resonant folded material 14 between the strips 13 and the cover 12. Two driving units may be provided, connected respectively to opposite ends of the sound radiators. The driving unit or units are of the moving coil type. The panels may be triangular or trapezoidal and may be concave. As shown, they are flat and include side members 10 and struts 11. Several such loudspeakers covering a variery of frequency ranges may be provided within a common housing or assembly.
Patent GB-670432-A (GB)
Title: Improvements in and relating to weather forecasting devices
IPC: G01W1/10
Filed: 1949-03-07
Abstract: 670,432. Meteorological appliances. KRICK, I. P. Feb. 23, 1950 [March 7, 1949], No. 6152/49. Addition to 658,533. Class 97 (iii). A weather forecasting device comprises a casing 28, Fig. 1, provided with a series of windows 29 behind which are mounted indicia or illustrations representing cloud formations such as clear, cirrus, altocumulus, altostratus, nimbus, cumulus, strato-cumulus; in line with each window a set of compass points 31 is marked on the casing. Also mounted within the casing is an endless band passing over upper and lower rollers, the spindles of which are inserted in bearing recesses in a carrier, the lower roller being operated by a knob 5; the band carries a set of indicia providing forecasts and at its left-hand with an arrow appropriately cited and viewable through slits 30 in the casing. The knob is tuned until the arrow is seen through the slit 30 adjacent the selected cloud illustration and is opposite the compass point corresponding to the observed wind direction. The appropriate forecast is then viewable through a window or slot 32 in the casing. As shown in section in Fig. 4, the endless band 2 is supported on the back plate 17 and a removable front plate 21 of a frame 10 which carries the upper and lower rollers and is inserted into the lower end of the casing and is secured at the top by a screw 36 which may carry a supporting ring. The lower part of the casing is closed by a cap member 11 mounted over the lower roller and provided with spring-engaging means. The illustrations of cloud conditions are provided on a sheet 26 bent over the frame and secured by an adhesive. A sheet 27 of transparent material covers the sheet 26. A duplicate set of cloud condition illustrations is provided on the under limb of the sheet 26, viewable through windows 34 at the back of the casing. The uppermost window and illustration, corresponding to CLEAR, are however missing in this set, the corresponding part of the casing exhibiting information as to the manner of using the device. A compass is accommodated in a recess 25 in an extension of the frame and viewed through an aperture 33 in the casing. The margin of the endless band may be marked in sectors corresponding to different seasons with an arrow for alignment with the appropriate compass point in each. The frame and casing may be tapered from bottom to top.
Patent GB-1333544-A (GB)
Title: Method for processing at elevated temperature solutions containi ng ammonium carbamate
IPC: C07C273/04
Filed: 1972-02-09
Abstract: 1333544 Urea; melamine STAMIOARBON NV 9 Feb 1972 [13 Feb 1971] 6155/72 Heading C2C In the synthesis of urea or melamine, the processing of the intermediate ammonium carbamate solution at elevated temperature is conducted in plant wherein at least the surfaces thereof which are in contact with the solution are made of a nickel-free ferritic steel consisting essentially of at least 25% by weight of chromium, from 0 to 3% by weight of molybdenum, and having a combined content of carbon plus nitrogen of not more than 0À035% by weight and the balance of iron.
Patent GB-697247-A (GB)
Title: Improvements in or relating to apparatus for measuring capacitances having an associated shunt conductance
IPC: G01R17/00
Filed: 1951-03-14
Abstract: 697,247. Electric tests and measurements; condensers. GENERAL ELECTRIC CO., Ltd., JAMES, E. G., and LINDELL, A. O. E. Nov. 26, 1951 [March 14, 1951], No. 6159/51. Class 37. A network for measuring a capacitance C, Fig. 1, with an associated shunt conductance G comprises two T-networks in parallel, fed with an A.C. signal and adjusted so that the net output is zero, the unknown capacitance C and conductance G being measured individually by two variable condensers C1, C2, respectively. The output, from terminals T2, is fed to a cathode-ray oscilloscope, an initial balance without C and G providing a permanent reference line 1, Fig. 2, after which C1 is adjusted for the correct value of C, and C2 made to sweep the appropriate range, so that the trace on the CRO is curve 2, which becomes curve 3 when the capacitance of C is the correct value. Capacitor construction. The variable capacitor C2 comprises a set of fixed and movable vanes in the shape of interleaved concentric cylinders, the movable vanes being attached to a moving coil mounted on a magnetic pole and fed with sinusoidal A.C. Specification 680,528 is referred to.
Patent GB-1169135-A (GB)
Title: Improvements in and relating to Mass Analyzers
IPC: G01N27/62
Filed: 1968-02-08
Abstract: 1,169,135. Mass spectrometers. BELL & HOWELL CO. 8 Feb., 1968 [19 June, 1967], No. 6205/68. Heading H1D. In a mass spectrometer of the quadrupole. monopole or dualpole type the spacing between the electrodes in the analysing region is reduced at one or both ends to reduce the length of the fringing fields and to increase transmission efficiency. In the figure the spacing between electrode rods 21, 23 is reduced at the ion entry end by enlargments only in the Y- direction. In alternative embodiments discs or collars may be provided on the ends of the electrodes.
Patent GB-455072-A (GB)
Title: Improvements relating to water softeners
IPC: C02F1/42
Filed: 1936-03-02
Abstract: 455,072. Softening water. HAWTHORN, J., 17, Hale Drive, Mill Hill, London. March 2, 1936, No. 6272. [Class 46] Salt for regenerating the base-exchange material of a water softener is placed in a perforated vessel 5 which has vanes 8 at the upper end so that water entering through a jet 9 rotates the vessel and dissolves the salt, afterwards flowing downward through the base-exchange material in the compartment 3 of the container 1. The vessel 5 may be mounted on a pin 6 on a perforated plate 4 which divides the container 1 into upper and lower compartments. The normal flow of water to be softened is upward through the medium from an inlet pipe 12 to an outlet pipe 11, swivelled on the lid 10. The lid 10 is held in place by a clamp bar 15 with pressure screw 17 and claw-shaped ends which engage a shoulder on the container.
Patent GB-940704-A (GB)
Title: Improvements in or relating to the coating of webs
Inventor: MARSHALL GEOFFREY
IPC: D06N3/00
Filed: 1961-02-21
Abstract: 940,704. Laminates and laminating. BRITISH CELLOPHANE Ltd. Feb. 6, 1962 [Feb. 21, 1961], No. 6342/61. Heading B5N] A porous web, such as a knitted or woven fabric, non-woven fabric, fleece, felt, porous paper, for example a woven rayon fabric, is coated with a continuous film of a thermoplastic polymer, such as polyethylene, polypropylene, polyamides, polyesters, polyvinyl chloride, copolymers of vinyl chloride and vinyl acetate, polystyrene and cellulose acetate, which may contain small quantities of conventional additives such as softeners, plasticizers and pigments, by drawing a molten film of the polymer into intimate contact with one surface of the web by applying suction to the other surface, and cooling the film to below the solidification point of the polymer while still maintaining the suction. The molten film may be applied by first applying a solid film, which is then melted by heat, or it may be applied directly by a sheet extrusion die. The molten film is desirably pressed against one surface of the porous web, cooled to solidify it, and then remelted prior to being drawn against the web by suction. The porous web is preferably preheated, and may have been preheated with a bonding resin, for example a urea/formaldehyde condensate or a polymer of the same composition as the film. The Figure illustrates a suitable apparatus for carrying out the invention, in which a porous web 1 is heated by radiant heater 3, coated with polyalkylene 6 via die 7, and passed through nip and chill rollers 4 and 5. The coated web is now passed over a perforated drum 11, to which internal suction is applied, heated to a molten state by heater 15, and finally cooled to below the solidification point by cooling air from nozzles 16. Specification 688,637 and German Specification 1,014,313 are referred to.
Patent GB-109229-A (GB)
Title: Improvements in or relating to the Water-cooled Tubes of Gas Fired Shell Billet and like Heating Furnaces.
IPC: B21J17/00
Filed: 1917-05-04
Abstract: 109,229. Dowson & Mason Gas Plant Co., Wright, T., and Mawby, E. W. May 4, 1917. Metal-heating furnaces.-Water-cooled tubes a, with inner circulation tubes b, the water in which circulates as shown or reversely, are fitted in channels in raised portions of the bed of a shellbillet or like gas-fired heating-furnace to support the billets &c. as they slide through the furnace. The flow of water is controlled by cocks a<2>, b<3>.
Patent GB-789744-A (GB)
Title: Improvements in or relating to the evaporation and/or boiling of aqueous sugar solutions
Inventor: AIKEN JOHN KEMPTON
IPC: B01B1/04
Filed: 1955-03-04
Abstract: In order to prevent foaming during the evaporation of aqueous solutions of sugar, such as cane sugar or beet sugar, a small proportion of an ether or an ester of a polyalkylene glycol is added to the solution.  The molecular weight of the polyethylene glycol, from which the ether or ester is derived, is not less than 200 and not more than 3000.  The etherifying and esterifying radicals should contain 8 to 22 carbon atoms.  The additive is preferably present in the proportion.  The mono- or di-stearate of a polyethylene glycol of M.W. 300, 600 or 1000, or the mono-stearate of a polypropylene glycol of M.W. 1200 or 2000, may be used.  The mono- or di-cetyl ethers of the above-mentioned polyethylene or polypropylene glycols may be used.  An examples relates to the distillation of concentrated sugar-beet juice at low pressure (2.5 cms. Hg) using 10 pp.m. of the monostearate of a polyethylene glycol of M.W. 600 as antifoaming agent.