baber/WOPTO huggingface dataset:
Patent GB-642107-A (GB)
Title: Improved vacuum pans
IPC: C13B25/00
Filed: 1946-12-30
Abstract: A vacuum pan with an internal calandria of the vertical tube type, and a central downtake, wherein upwardly-flaring vanes form a tube-like separation-device with peripheral apertures above the downtake and below the operational level of the fluid mass in the pan, whereby the ascending current of mass from the tubes does not interfere with the descending current flowing to the downtake.  In the pan shown in Fig. 1, three annular vanes 18 are mounted on angle members 20 which are welded to the walls of the downtake 3. In the concentration of sugar syrups the initial charge <PICT:0642107/III/1> <PICT:0642107/III/2> <PICT:0642107/III/3> <PICT:0642107/III/4> is admitted to level 15, but as the concentration proceeds, additional syrup is drawn into the pan through pipe 10 until the contents reach strike level 16.  In another embodiment (not shown), the diameter of the pan above the top tube sheet is greater than the diameter of the calandria, thus providing increased area for circulation.  In Fig. 4 the separation-device comprises four staggered sets of curved vanes 23, 24, 25, 26 mounted above upper tube sheet 28 and downtake 29.  In Fig. 6 the device is formed by two helical vanes 31, 32.  The Specification as open to inspection under Sect. 91 describes the pan shown in Fig. 8, (Cancelled), wherein there is a small central downtake 38, and an annular downtake 37 surrounding the calandria. The downtakes are associated with separation-devices 40, 41, both formed of annular vanes.  This subject-matter does not appear in the Specification as accepted.
Patent GB-369236-A (GB)
Title: Improvements in or relating to the manufacture of dyes
IPC: C09B23/06
Filed: 1930-12-16
Abstract: Carbocyanine dyes, having a substituent in the carbocyanine chain are produced by treating two molecular proportions of a quaternary salt of a heterocyclic nitrogenous base having an active a -methyl group with at least two molecular proportions of an organic carboxylic acid anhydride, in the presence of not more than one molecular proportion of an acid-binding substance, e.g. the salt of a weak acid.  If acetic anhydride is used as the acid anhydride, an a -acetylmethyl derivative of the quaternary salt is first formed, with liberation of a molecule of acetic acid, and a second molecule of the quaternary salt then condenses with the acetyl derivative, a further molecule of acetic anhydride being used as a dehydrating agent, and the acid-binding substance removing one molecule of the hydriodic or other acid of the quaternary salt.  According to examples, (1) acetic anhydride is condensed with 1-methylbenzthiazole ethiodide, 2 : 3 : 3-trimethylindolenine ethiodide, quinaldine ethiodide, 1-methylbenzoxazole ethiodide, 1-methyl-3 : 4-benzbenzthiazole ethiodide and 1-methyl-5 : 6 - benzbenzthiazole ethiode, by heating under reflux in the presence of anhydrous sodium acetate: (2) 1-methylbenzoxazole ethiodide is similarly condensed with benzoic anhydride: (3) 1-methylbenzthiazole ethiodide is condensed with acetic anhydride in the presence of sodium formate. Sodium salicylate is also mentioned as an acid-binding agent, and propionic anhydride as a suitable anhydride.  Many of the products are photographic sensitizers.  Specification 232,740, [Class 2 (iii), Dyes &c.], is referred to.  According to the Provisional Specification, acid anhydrides may be condensed with quaternary salts of heterocyclic nitrogenous bases having either a reactive hydrogen atom or methyl group in the a  or g  positions.  For example, benzthiazole ethiodide may be condensed with acetic anhydride.  Quinoline and lepidine are also mentioned as suitable bases whose quaternary salts may be used.
Patent GB-347199-A (GB)
Title: Improvements in and relating to continuously fired steam generators
IPC: F22B1/22
Filed: 1929-12-12
Abstract: 347,199. Methods of generating steam ; water-tube boilers. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Dec. 12, 1929, No. 38143. Convention date, Dec. 19, 1928. [Class 123 (ii).] The gases in the combustion chamber 1 of a steam generator 5 are under a constant high pressure, e.g. 2À5 atmospheres, such that they flow through the heating tubes 6 at about the velocity of sound in the gases. The generator discharges into a steam and water drum 8 from which water is withdrawn and rapidly circulated through the generator by a pump 7. A superheater 11 is arranged in the upper part of the combustion chamber. In a modification, the walls of the combustion chamber are lined with water-tubes each surrounding one or more heating tubes. The gases may flow through the annular space between a central and surrounding watertubes. The fuel and air compressor 13 may be driven by an internal-combustion engine, and the engine exhaust may be mixed with the combustion gases to assist in the steam generation.
Patent GB-1192924-A (GB)
Title: Fancy-Effect Textiles
Inventor: BONSER ARTHUR
IPC: D02G3/34
Filed: 1966-08-25
Abstract: 1,192,924. Fancy effect textiles; carding. COURTAULDS Ltd. 24 Aug., 1967 [25 Aug., 1966], No. 38189/66. Headings D1F, D1N, D1R and D1W. A fancy effect textile structure-for example a sliver, roving, top or yarn, a knitted or woven fabric, a tufted carpet, or a carded web which may be needled, stitched, or bonded-is made by feeding to the carding section of a carding engine by means of a cross-laying device two or more slivers differing in one or more of the following, colour, dyeing affinity, lustre, fibre type, fibre dimensions or cross-sectional propenties, or cohesion of its component fibres, carding the slivers to form a web, and, if necessary, converting the web to form the textile structure. A scotch feed may be used as the cross-laying device. A main sliver of a wool blend may be fed to the carding section from a scribbling section, and one or more thin differently coloured slivers of synthetic or regenerated fibres, e.g. nylon, may be drawn from cans. Alternatively, differently coloured wool blends may be fed to each side of a divided hopper of the scribbling section which has a divided doffer to produce two different slivers which are drawn from cans. Alternatively, differently coloured wool blends may be fed to each side of a divided hopper of the scribbling section which has a divided doffer to produce two different slivers which are drawn onto the same intermediate feed carriage, or onto separate carriages if they are to be fed at different rates to the carding section. Additional slivers may be introduced at the intermediate feed. To obtain a thorough mixing of the fibres the carding section may have a normal setting, or, to obtain a less homogeneous mixing, the card setting may be more open. A colloidal dispersion of silica may be applied to a sliver so that there is little breakdown of the sliver during carding to produce stub effects. In an example, slivers of white and black acrylic fibres were used, the setting of the carding section was very open and the condensed fibres were spun into a yarn having successive portions ranging from white through various shades of grey to black.
Patent GB-1530393-A (GB)
Title: Roller hearth glass furnace for glass sheets
IPC: C03B35/16
Filed: 1976-02-18
Abstract: 1530393 Tempering sheet glass H A McMASTER and N C NITSCHKE 18 Feb 38539/77 1976 [19 Feb 1975] Divided out of 1530392 Heading C1M (Also in Division F41 A roller hearth furnace for use in tempering sheet glass as described in Specification 1,530,392 in which the elongated housing of hollow construction has a substantially circular cross-section; the housing including upper and lower portions 72, 70 of substantially semi-circular cross-section. Heating elements 90 are fitted to both the upper and lower housing portions. The lower housing portion 70 may have a stainless steel shield 92 to prevent broken glass falling on to the heater elements.
Patent GB-826533-A (GB)
Title: Naphthoquinone derivatives
IPC: C07D203/14
Filed: 1957-12-11
Abstract: The invention comprises compounds of the general formula <FORM:0826533/IV (b)/1> (wherein R and R1, which may be the same or different, are hydrogen atoms or alkyl radicals with not more than four carbon atoms, and X is a halogen atom or an alkoxy radical with not more than four carbon atoms), and the preparation thereof by reacting an a ,b -alkylene imine (e.g. aziridine) with a 1,2-naphthoquinone.  3-Methoxy-1,2-naphthoquinone is made by oxidizing 2 - hydroxy - 3 - methoxy - naphthalene with potassium bifluoride. Specifications 762,723, 765,658, 793,860, 796,218 and 806,079 are referred to.
Patent GB-1023382-A (GB)
Title: Stabilization of halogenated aliphatic hydrocarbons
IPC: C07C17/42
Filed: 1963-10-01
Abstract: Halogenated aliphatic hydrocarbons, e.g. trichlorethylene, perchlorethylene, dichlorethylene and vinylidene chloride, which may be used for cyclic degreasing and cleaning processes are stabilized against photo-oxidation by adding at least one ketimine or imino-ethane of general formula <FORM:1023382/C4-C5/1> in which each of R1, R2 and R3 represents an alkyl, alkenyl, alkoxy or alkenoxy group, each group containing less than 8 carbon atoms and being unsubstituted or halogen substituted, e.g. fluorine substituted, or in which R3 represents a hydrogen atom and R1 and R2 are as defined. The groups R1, R2 and R3 may have a conjugated double bond with one of the imine function, or the group R3 linked to the N atom of the imine may be a branched chain group. Compounds specified are 1-ethoxy ethanimine, 1-ethoxy propanimine, 1-n-propoxy ethanimine, N-isopropyl 2-propanimine, N-isobutyl 2-propanimine, N-methyl-2-butanimine and N-propyl-2-butanimine. Other stabilizers such as phenols, esters, aliphatic alcohols and a -epoxy compounds may also be present.ALSO:Stabilizers for halogenated aliphatic hydrocarbons, e.g trichlorethylene, perchlorethylene, dichlorethylenes and vinyl dene chloride comprise at least one ketimine or imino-ether of general formula: <FORM:1023382/C2/1> in which each of R1, R2 and R3 represents an alkyl, alkenyl, alkoxy or alkenoxy group, each group containing less than 8 carbon atoms and being unsubstituted or halogen substituted, e.g. fluorine substituted, or in which R3 represents a hydrogen atom and R1 and R2 are as defined. The groups R1, R2 and R3 may have a conjugated double bond with one of the imine functions, or the group R3 linked to the N atom of the imine may be a branched chain group.  Compounds specified are 1-ethoxy ethanimine, 1-ethoxypropanimine, 1-n-propoxy ethanimine, N - isopropyl 2 - propanimine, N - isobutyl 2 - propanimine, N - methyl - 2 - butanimine and N-propyl 2-butanimine.  Other stabilizers such as phenols, esters, aliphatic alcohols and a -epoxy compounds may also be present.
Patent GB-1388587-A (GB)
Title: Electrically operated fluid pressure control valve
IPC: G05D16/20
Filed: 1972-08-18
Abstract: 1388587 Valves H€GGLUND & SÍNER AB 18 Aug 1972 [20 Aug 1971] 38721/72 Heading F2V A valve for maintaining a pressure at inlet port 6 proportional to the current supplied to electromagnet 2 has a closure member 11 carried by armature 10 which biases it towards seat 9 with a force dependent on the current, the armaturt extending with slight clearance through a combined bearing/seal 16 through which fluid from outlet chamber 12 can leak to serve as a lubricant. The armature is also displaceable by push-button 24. A check valve 19 in coupling 18 can be unseated, following removal of cap 21, by introduction of the stem of a pressure gauge. The effective diameter of seat 9 may be variable by providing a linearly movable or rotary plate having apertures of various diameter selectively alignable with the seat. Alternatively, nested liners in the passage through nozzle 8 may be selectively raised to define the inner diameter of the seat. The effects of hysteresis may be reduced by including an A.C. component to induce dither or by rotating the armature using an auxiliary motor or propeller, which latter may also produce a thrust on the armature. The closure member may alternatively have a male or female conical shape and may be connected to the armature with some lost-motion. In Fig. 23, an additional closure member 53 is included which seats at 58 upon de-energization of the magnet to prevent flow to port 56. In this case, the valve acts to maintain a pressure at port 56 proportional to the current supplied to the magnet. In either case, the constant of proportionality relating pressure and current may alternatively be varied by using closure members or seats of different diameter. The nozzle 8 may be radially constrictable, e.g. by means, e.g. a screw to adjust the constant of proportionality.
Patent GB-916025-A (GB)
Title: Spraying apparatus
Inventor: HARTLEY GILBERT SPENCER
IPC: A01M7/00
Filed: 1959-11-17
Abstract: 916,025. Spraying apparatus. FISONS PEST CONTROL Ltd. Feb. 7, 1961 [Nov. 17, 1959], No. 38872/59. Class 69 (3). In a process and apparatus for spraying agricultural chemicals from a moving vehicle, a mixture of a solution or suspension of an agricultural chemical and water is forced to spray nozzles by a main pump, the pump drawing water from a main tank and the solution or suspension from a metering pump which forces the solution or suspension to the main pump from a subsidiary tank, the metering pump being driven in direct proportion to the speed of the moving vehicle. Thus the amount of chemical supplied per unit area of land sprayed is maintained constant and independent of vehicle speed. The vehicle may comprise a railway train in which case the main tank consists of a tanker. The metering pump operates at a rate considerably below that of the main pump whereby the variation in the volume of liquid fed by the metering pump makes no appreciable difference in the volume of liquid forced by the main pump to the nozzles. In the Figure a main pump 4 draws water from a main tank, not shown, along a line 7 and forces it through a three-way valve 8 and line 9 to nozzles 6. The metering pump 3, geared to a landwheel of the vehicle on which the apparatus is carried, draws chemical in solution or suspension from tank 1 through three-way valve 18 and line 10 into line 7. The nozzles always spray the liquid at optimum pressure but the chemical concentration varies. A mixing tank 2, a subsidiary pump 5 and interconnecting lines and three-way valves 15, 16, 18 and 19 are provided whereby during spraying, with the valves appropriately adjusted, the pump 5 draws liquid from tank 2 and feeds it to tank 1 which is kept full, and excess liquid flows back to tank 2 through an overflow pipe 25. In order to spray the contents from both tanks 1 and 2 at the end of a run, a valve 22 in a line 21 is opened. To replenish the tank 2 the various valves are appropriately adjusted whereby water is supplied from the main tank to the tank 2, and fresh chemical simultaneously supplied. By suitable adjustment of the valves the system may be rinsed through with water from the main tank. During temporary stops the valves 8 and 12 are adjusted so that the pumps 3 and 4 operate in closed circuit, a drive from pump 4 being connected to pump 3 when the vehicle is at rest.
Patent GB-1526527-A (GB)
Title: Method and device for breaking hard compact material
IPC: E02F5/30
Filed: 1976-09-20
Abstract: 1526527 Blasting ATLAS COPCO AB 20 Sept 1976 [19 Sept 1975] 38916/76 Heading E1F [Also in Divisions B5 and F3] A method of breaking a hard material, e.g. in situ rock, wherein at least one hole is drilled in the material, a blasting charge 21 is loaded into the hole, and detonation of the charge as well as necessary stemming and, if required, compression of the charge is carried out by means of relatively incompressible fluid, which is accelerated and directed into the hole in the form of a collected quantity which fills the hole so that the charge is detonated by means of the pressure pulse which arises in said quantity of fluid when it impacts the charge. The fluid may be a liquid, e.g. water, a plastic material or a mixture of solids and liquid. The apparatus for carrying out the method comprises a barrel 13, a back head 14 screwed into the rear of. the barrel and having a check valved passage through which the fluid is fed into the barrel, a charge chamber 16 for a power fluid, e.g. pressurised air or a like gas, for accelerating the fluid in the barrel when released against the rear of said fluid by appropriate actuation of a valve 17 associated with the chamber. The charge 21 may be entered into the hole before actuation of the apparatus or may be propelled into the hole by the accelerated fluid, the charge then contacting the leading face of the fluid in either free association therewith or through an encapsulating, projectile-defining, paper or plastics cover wholly or partly embracing the charge.
Patent GB-914377-A (GB)
Title: Adapter for connecting power drills to powerless tools
IPC: B23D57/00
Filed: 1960-11-14
Abstract: 914,377. Securing tools on shafts. SKIL CORPORATION. Nov. 14, 1960 [Nov. 27, 1959], No. 38977/60. Class 80 (2). [Also in Groups I, XXIII and XXV] Hand tools, such as rotary or jig saws, orbital sanders or hedge trimmers, are adapted for fitting to an electric power-drill by the provision of an adapter plate 44 with recesses 47 which form a bayonet-type fastener with studs on the power drill and of splines 39 on the tool shaft which mate with a spline nut on the drill shaft. The recesses 47 may be key-hole slots outwardly of the central opening 46 for the drill shaft or may open into this opening 46 and have enlarged ends 50 for receiving the enlarged heads of the studs. The adapter plate is made of spring stock and has a pair of offset portions 53 which, when the drill is rotated relatively to the tool, draws them together and connects them frictionally. The reverse torque of the drill tends to retain the studs in the end portions 48 of the recesses 47 but one of the studs is positively locked by a spring member 55 which is flexed back as the stud is entered in the recess and then springs back as the stud reaches the end of the recess; a tab 58 permits the member 55 to be disengaged when removing the drill from the tool.
Patent GB-1384677-A (GB)
Title: Reflecting antenna primaryl for the ghz bands
IPC: H01Q1/24
Filed: 1973-08-17
Abstract: 1384677 Aerials GRUNZWEIG & HARTMANN UND GLASFASER AG and ROHDE & SCHWARZ 17 Aug 1973 [19 Aug 1972] 39067/73 Heading H4A An aerial comprises a main reflector made from synthetic resin with an electrically conducting surface, with a drive system which is mounted in the region of the pole of the main reflector and which is mechanically and electrically connected through a rod-like waveguiding member to an auxiliary reflector mounted in the region of the focus of the main reflector. The auxiliary reflector, wave-guiding member and drive system form a separate unit capable of being mounted on, and detached from the main reflector through an opening provided for this purpose in the main reflector in the region of its pole. When the unit is in place the opening in the main reflector is closed by a plate having a reflecting surface which is flush with that of the main reflector. A first embodiment comprises a paraboloidal main reflector 1, Fig. 1, made of synthetic resin with a rearwardly-extending cylindrical housing 2, stiffening rim flange 7, and (optionally) stiffening ribs 8. The rear end of the housing 2 is closed by a wall 4 having a central hole 16. The front end of said housing is open and receives a drive circuit 10 and a plate 5 of a feed unit 13, said plate being received in a recess in the main reflector, and being registered by dowels 14. The plate 5 is made of the same material as the main reflector 1. Its surface is a continuation of that of the main reflector, and both surfaces are coated electrolytically with a metallic layer 6. An extension 15 at the rear of the drive circuit 10 projects through the hole 16 and is engaged by a securing nut 17. The feed unit 13 also comprises a cylindrical waveguide 20 extending towards an auxiliary reflector 22, which is in the form of a metal disc, and which is located near the focus 12 of the main reflector 1. The waveguide 20 supports the auxiliary reflector 22 by means of an insulating spacer 21 and is soldered to the coating 6 where it passes through. A radome 29 may be provided, and a protective layer of synthetic resin may be formed on the reflective coating 6. The aerial may be attached to a mast by means of a clamping bracket 30. In a second embodiment, the rear end of the housing 2, Fig. 2, is open to receiving a large diameter securing ring 18, and the plate 5 is of smaller diameter than in the first embodiment. A round rod 23 of synthetic resin extends towards the focus 12, and terminates in a mushroom shaped head 26, of no greater diameter than the plate 5. The face 24 of the head 26 is of substantially paraboloidal shape, with focus 12, and is conductively coated, as is the surface of the rod 23. The other face of the head 26 is substantially spherical shape, with centre 12, and is provided with grooves or blind holes 27 to improve matching. A mixer diode 28 may be provided at the other end of the rod 23.
Patent GB-1478650-A (GB)
Title: Mixtures of fatty acid alkanol amides
IPC: C11D1/52
Filed: 1974-09-10
Abstract: 1478650 Long chain aliphatic alkanolamides ETHYL CORP 10 Sept 1974 [17 Sept 1973] 39395/74 Heading C2C [Also in Division C5] A process for producing an alkanol amide mixture comprises (a) reacting a di-alkanol amine with a mixture of lower alkyl esters of aliphatic monocarboxylic acids whose acyl groups contain from 8 to 20 carbon atoms, the ester mixture including branched-chain ester in which the acyl groups carry in the α position an alkyl substituent at least two carbon atoms in length, the branched-chain ester being substantially unreactive with the di-lower-alkanol amine; and then (b) reacting the product from step (a) with a mono lower alkanol amine to convert unreacted ester into mono-lower-alkanol amide. The ester is preferably that obtained by reacting an olefin containing 7-19 carbon atoms, carbon monoxide and a lower aliphatic alcohol (especially methanol).