baber/WOPTO huggingface dataset:
Patent GB-688228-A (GB)
Title: Method of recovering solvents from waste gases
Filed: 1950-10-09
Abstract: Phenols are recovered from the waste liquors obtained in the carbonization of lignite, coal, &c. by extraction of the liquor with butyl acetate &c. and distillation of the extract to remove the solvent as vapour and leave the phenol as still residue. Residual solvent in the extracted liquor is recovered by distillation of the liquor to remove solvent together with gases formed; the solvent is then separated by condensation and the gases are scrubbed with the phenol to recover any solvent carried over therewith.  A combined solvent extraction and distillation plant is described (see Group III).ALSO:<PICT:0688228/III/1> In the recovery of solvent which remains behind in an extracted liquor after said liquor has been extracted with said solvent to recover valuable compounds e.g. in the recovery of phenols from waste liquors by extraction with butyl acetate the extracted liquor is distilled to remove solvent, the solvent is condensed and separted from gases formed in the distillation, and the gases are washed to remove any residual solvent remaining therein, by the valuable compound which has been recovered from the solvent.  Waste liquor containing phenols from a cooler 1 is fed in counter current to butyl acetate through a series of extractors 3 supplied with butyl acetate from a tank 13.  The extracted liquor passes to a tank 4 and is pumped by a pump 22 through heat exchangers 5, 6 into a distillation tower 11 heated by steam.  Residual water is drawn off from the base 10 of the tower and evacuated through the heat exchanger 5 and line 25.  Vapour and gases pass off through line 26 and condenser 9 to gas and liquid separators 7, 8, the condensed solvent being returned to tank 13 and water to tank 4. The gases are led through line 30 to a washer 31 where residual solvent is removed by washing them with a countercurrent of the recovered phenol.  This latter is obtained by feeding the extract from the extractors 3 through line 32 to distillation tower 16 where the extract is heated to distill off solvent, which is condensed in condenser 16 and returned to tank 13, and leave behind as residue the phenol which is passed through cooler 19 to tank 20 part being recycled to the washer 31.
Patent GB-696686-A (GB)
Title: Damper system for a domestic fireplace with a back boiler flue
IPC: F24B1/189
Filed: 1950-10-10
Abstract: 696,686. Fireplaces. ANDERSON, J. M. Oct. 10, 1951 [Oct. 10, 1950], No. 24696/50. Class 126 A damper system for a solid fuel fireplace comprises a frame with a guide channel on its upper face for a sliding damper, a hook projecting from the sliding damper and a lever projecting from the forward edge of the slide, and a counterbalanced swivel damper with a cam engageable with the hook member. The damper 3 controlling the hot water flue slides in guides 2 on a frame 1. The main flue is controlled by a damper 7 pivoted in sockets 13 on the frame 1 with counterbalancing weights 11 arranged on either side of an operating lever 4 projecting from the front of the hot water damper 3. A hook 9 projecting from the hot water damper 3 engages a cam 8 on the swivel damper 7 to close the main flue when the hot water flue is opened by pulling damper 3 forwards. A flange 10 at the rear edge of the damper 3 extends the hot water flue upwardly. When the hot water flue is closed, the main flue damper 7 is allowed to. open by the action of weights 11. ,
Patent GB-674517-A (GB)
Title: Improvements in or relating to ammonium nitrate containing explosive compositions
IPC: C06B31/30
Filed: 1950-10-10
Abstract: 674,517. Ammonium nitrate explosive. ATLAS POWDER CO. Oct. 10, 1950. [Oct. 14, 1949] No. 24706/50. Class 9 (ii). An explosive composition comprises granular ammonium nitrate, a sensitizer, a solid fuel, and a solid finely-divided hydrophilic reaction product of formaldehyde with at least one of the compounds from the group urea, thiourea, and melamine, 0.5-5 per cent of the reaction product may be present, which may be a simple product, e.g. dimethylol urea, or a partially polymerized product with or without setting catalysts, such as acids, acid salts or ammonium salts of strong acids, or fillers, such as wood flour or starch. Preferred products are formaldehyde-urea reacted in the molecular ratio 1.05 : 1 to 2.7 : 1; formaldehyde melamine reacted in the molecular ratio 1 : 1 to 6 : 1; or urea-melamine-formaldehyde, suitable sensitizers, present as 5-20 per cent, are explosive liquid nitric esters, e.g. nitroglycerine, or explosive nitro-aromatic compounds, e.g. trinitrotoluene or trinitronaphthalene, and fuels, present as 4-15 per cent, may be wood pulp, bagasse, ivory nut meal, ground walnut shells, apricot pip pulp, corn flour, charcoal, coal, or sulphur. The ammonium nitrate may be a mixture of wax coated fine and coarse particles. Other ingredients are nitrocotton, fine and coarse sodium nitrate, calcium carbonate, and magnesium carbonate.
Patent GB-480966-A (GB)
Title: Improvements in or relating to grand pianos
IPC: G10C3/02
Filed: 1936-09-10
Abstract: 480,966. Pianoforte cases. TRIUMPH AUTO PIANOS (1930), Ltd., and CRAMPTON, G. A. Sept. 10, 1936, No. 24726. [Class 88 (ii)] [Also in Group XIV] The fall 15 and a music desk 16 separate therefrom are arranged so that the music desk is automatically moved to its operative position as the fall is raised to uncover the keyboard, and restored to its inoperative position when the fall is lowered. The fall 15 has a rear extension 24 provided with a cam 33 adapted to contact with the end 28a of a lever 28 pivoted to the side member 10 of the casing at 29a and connected by a link 27 with the front part 16 of the top which is hinged at 26 and in the open position shown forms the desk. The front 22 of the fall with its lip 23 forms the ledge of the desk. The member 16 extends across the entire width of the piano, forming the front half of the top cover and the linkage 27, 28 is such that its weight tends to keep the fall 15 in its raised position. The cam 33 is in the form of a bent metal strip. A blade spring may act on the lever 28 to check the descent of the part 16 on closing the fall. The front rail 17 to which the part 16 is hinged is secured to the side walls of the casing by sliding latches 25 and the pivots for the fall comprise screws 18 engaging tapped holes in brackets 19 on the fall and entering recesses in bearing plates sunk into the keyboard cheeks 11. The pin 31 connecting the part 16 to the link 27 is readily removable. The linkage 27, 28 may be provided at one or both ends of the fall.
Patent GB-639734-A (GB)
Title: Improvements in or relating to the dehydration of methyl ethyl ketonic by distillation
IPC: C07C49/10
Filed: 1947-09-09
Abstract: <PICT:0639734/III/1> Anhydrous methyl ethyl ketone is recovered from aqueous mixtures containing it by distilling the aqueous mixture under an absolute pressure of at least 20 lbs. per sq. inch, condensing the distillate and cooling it whereby a ketone-rich phase and a water-rich phase are formed, refluxing the ketone-rich phase to the distillation zone, and withdrawing anhydrous ketone as bottoms from the distillation zone.  Crude methyl ethyl ketone, prepared by the dehydrogenation of secondary butanol, is supplied through line 1 to fractionator 2 from which the ketone-water azeotrope is withdrawn as distillate through line 3, while secondary butanol is removed as bottoms.  The distillate is supplied through line 6 to column 7 wherein an absolute pressure in the range of from 20 to 200 lbs. per sq. inch is maintained.  Anhydrous methyl ethyl ketone is withdrawn from column 7 through line 13.  The vapours from the head of column 7 are condensed.  The condensate is cooled to 25 DEG  C., and passed to decanter 9.  The upper layer which separates is the ketone-rich layer, and this is refluxed to column 7.  The aqueous, lower layer is fractionated in tower 15 from the bottom of which, water is withdrawn; while the ketone-water azeotrope corresponding to the pressure employed, is taken overhead through line 16 and returned to column 7 or fractionator 2.  Alternatively, tower 15 may be operated at sufficient pressure to give a heterogeneous condensate which, in this case, would be passed to decanter 9.
Patent GB-1096308-A (GB)
Title: Photographic film processing apparatus
IPC: G03D5/06
Filed: 1966-06-03
Abstract: 1,096,308. Photographic processing apparatus. EASTMAN KODAK CO. June 3, 1966 [June 7, 1965], No.24827/66. Heading G2A. A photographic processing apparatus comprises a processing station 10 having a support 12 for a film 14 to be processed; a continuous movable web 18 having a porous surface to which an applicator 26 applies processing solution first before the web enters the processing stations; a drive roller 22 which moves the web in a closed path so that the porous surface receives the solution from the applicator and imparts it to the film against which the web is pressed when in the station 10; and a roller 28, downstream of the station exit, which extracts excess solution from the surface so that the surface is ready to once again receive and apply processing solution to the film. The support 12 may be heated. The web and film may be continuously or intermittently transported through the processing station in the same or in opposite directions. The excess solution extracted by the roller 28 is removed by a vacuum solution extractor 30. In another embodiment, Fig. 2 (not shown), the web 18 is replaced by a rotatable drum (32) having a porous surface layer (34). In a further embodiment, Fig. 3 (not shown), a plurality of applicators (26") is provided for applying different processing solutions in succession to the porous web.
Patent GB-411807-A (GB)
Title: Device for purifying and rendering non-poisonous the exhaust gases of internal-combustion engines
IPC: F01N13/02
Filed: 1932-09-06
Abstract: <PICT:0411807/III/1> <PICT:0411807/III/2> <PICT:0411807/III/3> The exhaust is purified either by electric and catalytic action or by electric action.  In one form the gases first pass through four tubes 4, Fig. 1, in series, wherein they are subjected to electrostatic action to filter the gases and condense any vapour. They then pass through four tubes 8 containing catalysers; heated air is admitted to the gases while in the pipes 4 and the action of the catalysers converts carbon monoxide to dioxide.  The tubes may be heated by exhaust jackets.  All the tubes have sludge outlets 13.  In modifications concentric tubes may be used for the catalysers and electric filters.  Small asbestos cylinders 115<a> 115<b>, Fig. 12 carrying the catalysts are mounted in concentric tubes 109, 110, 115 to which the gases flow after electric filtering.  This is effected by discharge obtained between a central electrode 6, Fig. 14, and a dividing wall 123 which are connected to an electric source and outer walls, the walls 121, 123 and 124 having pointed projections 130 to promote the electric charging.  The gases may be purified by electric action only in which case only tubes such as the tubes 4 are used. Electricity may be supplied by a magneto or by a coil and battery. A distributer may be used to serve the tubes in turn. Catalysts.--These may be in the form of rings 15 of steatite impregnated with one or more of manganese dioxide, cupric oxide or silver oxide, or they may be formed of perforated plates, gratings or cylinders made of asbestos.  The fibre with the catalyst and powdered pumice or steatite is made into a pulp from which any form may be moulded.  Alkali silicates or silicic esters may be used as binding media for the catalysts.  Before use and to fix the catalysts on their mounts, the silica compositions are treated with CO2 and thereafter with water; or they are warmed.
Patent GB-1165513-A (GB)
Title: Memory matrices.
IPC: G11C5/02
Filed: 1968-05-24
Abstract: 1,165,513. Magnetic storage apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 24 May, 1968 [27 May, 1967], No. 24909/68. Heading H3B. A magnetic storage matrix is formed by inserting annular cores 1, into circular recesses 3 in a metal plate 2, each recess containing at least one plate projection 5 which extends through the associated core and above the plate surface, and the plate having grooves 7 of greater depth then the recesses. Subsequently, the recesses, grooves, and the plate are coated with a layer of insulating material e.g. epoxy resin, the extremities of the plate projections being exposed. The plate projections are then interconnected by wiring such as printed conductors, and the bases of the plate projections electrically separated from each other by removing material from the surface of the plate opposite the recesses to an extent such as to expose the grooves. The recesses and grooves may be formed either by etching or a compression and extrusion process, and the material is removed by either etching or grinding. Suction holes (11), Fig. 2 (not shown) are provided in the recesses to facilitate introducing the cores.
Patent GB-241195-A (GB)
Title: Improvements in spinning apparatus
IPC: D01G15/10
Filed: 1925-10-06
Abstract: 241,195. Meinke, M. Oct. 8, 1924, [Convention date]. Carding-engines. - Flax, cotton, wool, or the like is worked up into a fleece on a small carding- engine and is spun or doubled on a frame adapted to be operated by hand and comprising means for dividing the carded web into slivers, a device to draw and twist slightly the slivers, and spinning or doubling devices such as ring and traveller spindles. The web dividing device comprises a series of belts 1, 2, 3, 4, Figs. 1 and 3, and a companion series of lower belts between which the web passes. Adjacent belts 1, 2 pass under a roller 5 over a roller 6, under a roller 7 and round rollers 8, 9, the last being a driving-roller. The lower belts pass round rollers 10, 11 and follow the belts 1, 2 round the rollers 6, 7. The adjacent belts 3, 4, pass round the roller 5 and then under a roller 12, over a roller 13 then round the rollers 8. 9. The belts are spaced by grooves in the rollers 5, 10, 6, 12, 8, 11 and are so arranged that the pairs of belts 1, 2, 3, 4 approach one another as they travel to the roller 8, and narrow down the strip of web carried by them. The strips pass between a leather 19 and rubbing-roller 20 to the drafting-device. This device comprises a block 21 which is reciprocated on guides 22 by a cam 34 and lever 35. The block carries a number of sleeves 23, Fig. 1, rotated by bands from a roller rotated by an endless band. The slivers pass through the sleeves and when the block is at the bottom of the slide the sliver is nipped and is drawn and twisted by the upward movement of the block. At the top of the slide the sliver is released and the block slides down quickly. The drawn slivers are passed between rollers to spindles 47 which may be of the ring and traveller type. By disengaging the web divider and the drawing-device the frame may be employed for twisting and doubling. Specification 2628/76 is referred to.
Patent GB-1044935-A (GB)
Title: Improvements in buckles
IPC: A44B11/25
Filed: 1965-06-14
Abstract: 1,044,935. Latches; buckles. RIVERTON PRODUCTS (PROPRIETARY) Ltd. June 14, 1965 [June 18, 1964], No. 24942/65. Heading E2A. A two part buckle comprises as one part, a channel section part 2 having a perforation 5 through the web 3 thereof and supporting between the flanges thereof a pivotally-mounted cam 6 with a lever arm 7 and a pair of relatively movable belt-retaining rods 14, 15 and as the other part, a tongue 23 with means at one end for securing a belt thereto and a stop 27 at the other end, the tongue being adapted to slide on the web of the channel of the first part under the cam to engage the stop in the perforation through the channel web. As shown, the cam is spring loaded to the buckle-fastened position and the cam, lever arm tongue and channel are made from lengths of extruded light alloy.
Patent GB-599527-A (GB)
Title: Improvements in and relating to lighters
IPC: F23Q2/08
Filed: 1945-09-26
Abstract: 599,527. Frictional igniters. BENKOE, I. Sept. 26, 1945, No. 24963. [Class 75 (iii)] In a lighter in which the lid 21 is pivotedon the friction wheel pivot, the lid is opened by a spring 18 after passing through a dead-centre position. The spring may be mounted on the body or on the lid bearing against a cam on the other part, or it may be mounted in the body urging a link pivoted to the lid. The spring 18, Fig. 14, may surround the flint tube 14 and may urge the link 24 so that the lid will be snapped open if raised further from the dead-centre position shown, or snapped shut if lowered from this position. The spring 18, Fig. 5, may alternatively bear against a cam-shaped projection on the lid, or a leaf-spring may be mounted on the lid and bear against a camshaped projection on the body. A dog rotating with the lid 5 provided to rotate the friction wheel during the opening but not during the closing of the lid.
Patent GB-948118-A (GB)
Title: Driving device for magnetic recording ond reproducing of high-frequency signals
IPC: H04N5/78
Filed: 1962-06-29
Abstract: 948,118. Magnetic tape recording; television. LOEWE OPTA A. G. June 29, 1962 [July 4, 1961], No. 24974/62. Heading G5R. A helical-wrap recorder has the sound and drive-synchronizing heads 9,10 behind as usual, but the video heads and guide drums 4, 5 ahead of the tape-driving capstan 1 and pinch-roller 3, the tape being tensioned about the drums 4, 5 only by the tape take-up means. With a 360 degrees wrap particularly, the influence of the video head tape-drag at the heads 9, 10 in terms of wow and flutter is isolated by the capstan, 1. Specification 909,909 is referred to.
Patent GB-1254776-A (GB)
Title: Dimerisation process
Inventor: GODIN GEORGE WILLIAM
IPC: C07C/
Filed: 1969-05-16
Abstract: 1,254,776. Dimerization process. BP CHEMICALS Ltd. 13 April, 1970 [16 May, 1969], No. 25096/69. Heading C2C. Dinitriles, e.g. adiponitrile and/or dicyanobutenes, are produced in a continuous liquidphase process by (a) feeding acrylonitrile to a reaction zone, (b) heating it under hydrogen pressure in the presence of a ruthenium compound as catalyst, and (c) continuously removing liquid reaction mixture and recovering dimerization products therefrom. Propionitrile may be produced as a by-product. Specified catalysts are ruthenium acetate, ruthenium acetyl acetonate and ruthenium chloride.
Patent GB-683132-A (GB)
Title: Improvements in and relating to hectographic duplicators
IPC: B41L11/00
Filed: 1949-09-30
Abstract: 683,132. Copying documents; printing surfaces. FLACH, W. Sept. 30, 1949 [Oct. 1, 1948], No. 25119/49. Class 100 (ii). In a hectographic duplicating apparatus in which the drum accommodates simultaneously a plurality of mirror script originals, at least one of the originals has both ends connected to means disposed inside the drum by which it can be displaced from inside the drum for part printing such as a single line or a series of lines therefrom. The drum 1 has an original 3 with its total text, such as main headings, lying on the outside of the drum and secured by a spring actuated clamping ledge 4, and a second original 8 with a part 13 of its text, such as single lines, on the outside of the drum, the original 8 being secured at each end to a roller 14, 15 and passing over a bridge block 10 freely fitting into a slot 9 at a suitable distance on the drum from the clamp 4. Guides 16 are provided either side of the block 10 which is tapered as shown and, if the whole drum is required for a single original, can be turned so that it completely fills the slot 9. Each roller 14, 15 comprises a roller 17 with slot 24 in which the end of original 8 is secured by small spring pressed pins 22 on an axle 20, a slot 21 being provided for positioning the end, and the axle 20 being then turned by a knob 26 till the pins 22 abut the edge of the slot 24, a stop 27 being provided at this position of the axle 20. The rollers 14, 15 are operated from driving wheels (not shown), extending beyond the periphery of the drum which engage gear wheels 18 so that either roller can be turned to move the original 8 across the slot 9 to present a fresh surface 13 between each copying operation. Several bridges 10 may be provided over the circumference of the drum, each having rollers 14, 15 for an original 8. In place of the clamping ledge 4, the original 3 may be clamped by a roller 17 similarly to the original 8.
Patent GB-278352-A (GB)
Title: Improvements in and relating to electric annealing resistance furnaces
IPC: G05D23/22
Filed: 1927-09-23
Abstract: 278,352. Akt.-Ges. Brown, Boveri, et Cie. Sept. 30, 1926, [Convention date]. Controlling consuming devices.-A cut-out or change over device 2, operated by a novoltage magnet, is arranged in the furnace supply leads, on the furnace side of the temperature controlled main switch 1, to alter the furnace connections when the current is first interrupted so that on reclosing of the main switch 1 the energy consumed is reduced. The main switch is controlled by a heat sensitive element 5 and a temperature measuring instrument 4 with maximum and minimum contacts. The device 2 changes the connection of the heating elements 3 from delta to star. When star connected the energy consumed is a little greater than the radiation loss.
Patent GB-742621-A (GB)
Title: Improvements in rotary regenerative heat exchangers
IPC: F28D19/04
Filed: 1953-09-11
Abstract: 742,621. Regenerative heat-exchangers. SVENSKA ROTOR MASKINER AKTIEBOLAG. Sept. 11, 1953 [Sept. 11, 1952], No. 25148/53. Class 64(1). Relates to regenerative heat-exchangers having a rotor 10 rotating about a vertical axis and surrounded by a cylindrical housing 20 supported at its lower end, e.g. by feet 45, and in turn supporting the rotor, said housing incorporating upper and lower end plates 21, 22 mounted adjacent the ends of the rotor and apertured to permit heat exchanging media, such as gas and air, to flow by way of admission and discharge ducts 15, 16, 17, 18 separately through heat transfer material carried by the rotor. According to the invention, in order to minimise thermal distortion in the apparatus due to uneven heating, the cylindrical housing is slit along its axial length in a position 30 located adjacent the path of the heating medium and at least the upper end plate 21 is radially slit at its periphery in a circumferential location 35 adjacent the slit in the housing, sealing means, such as indicated at 50 in Fig. 3, being provided around the slits. In the form shown, the apertures in the end plates are connected to the ducts 16-18 by means of transition pieces and the upper transition piece 43 and the lower end plate 22 are also provided with slits 40, 38 respectively in circumferential positions contiguous to the slits in the upper end plate 21 and housing 20.
Patent GB-620509-A (GB)
Title: Paper and method of making same
IPC: D21H17/55
Filed: 1946-08-23
Abstract: 620,509. Polyamide-treated paper. MUNISING PAPER CO. Aug. 23, 1946, No. 25187. Convention date, Oct. 27, 1945. [Classes 96 and 140] Paper for towelling, filtering, labelling, &c. is given high wet strength by impregnating with formaldehyde or its equivalent or dimethylol urea and with a synthetic linear polyamide made by reacting a monoaminocarboxylic acid or mixtures of a diamine with a dibasic carboxylic acid, drying in the presence of acid which is insufficient to degrade the cellulose, washing the paper till it is substantially acid free, and again drying. Synthetic linear polyamides which may be used are polymerized 6-amino caproic acid, 9-amino nonanoic acid, 11-amino undecanoic acid, polyhexamethylene-adipamide or -sebacamide. They may be in the proportion of 1 mol. of the monomer to 1 to 15 of formaldehyde. Acids specified are oxalic, formic, acetic, sulphuric, hydrochloric and phosphoric. The liquid medium of the impregnating composition may be ethyl alcohol or an acid in which the polymer is soluble.