baber/WOPTO huggingface dataset:
Patent GB-751866-A (GB)
Title: Improvements in or relating to method of recovering metals
Inventor: MONTGOMERY RICHARD BACON
IPC: C22B15/00
Filed: 1953-12-21
Abstract: <PICT:0751866/III/1> Aqueous ammoniacal ammonium salt solutions containing at least one of the metals copper, nickel and cobalt in the form of a water-soluble gas-reducible complex with ammonia are treated, prior to precipitation of the metal by gas reduction, to remove dissolved or suspended impurities such as tin, lead, manganese and silica by adjusting the ammonia and ammonium salt content to provide for optimum retention of the required metal in solution at the reduction temperature and preheating the solution to a temperature in the range 250-500 DEG F. under a pressure at least equal to the autogenous vapour pressure of the solution at that temperature, the resulting precipitate being removed, e.g. by filtration.  Adjustment of a solution containing copper and carbonate ions for a preheat temperature of 350 DEG F. is illustrated in the accompanying graph.  Solutions containing ammonia, carbon dioxide and cuprous oxide in mole fractions on or just below the line A-H may be preheated to 350 DEG F. without precipitation of copper as cuprous oxide.  Treatment of a solution containing 100-160 grams/litre of carbon dioxide, 160-190 grams/litre of ammonia and 125-135 grams/litre of copper is referred to.ALSO:Copper, nickel or cobalt are precipitated in metallic form from aqueous ammoniacal ammonium salt solutions containing at least one such metal as a gas-reducible water-soluble complex with ammonia and contaminant material in amount exceeding its maximum solubility at the reduction temperature, by adjusting the ammonia and ammonium salt content of the solution to produce optimum retention of dissolved metal in solution at the reduction temperature, preheating the adjusted solution to a temperature in the range 250 DEG -500 DEG F. under a pressure at least equal to the autogenous vapour pressure at that temperature, removing the precipitate so produced and treating the solution with a reducing gas at a temperature above the normal boiling point of the solution and under a pressure at least equal to the autogenous vapour pressure of the solution at that temperature.  Removal of the impurity precipitate and initiation of gas reduction should take place as rapidly as possible, say within fifteen minutes, after the preheating temperature is attained.
Patent GB-336842-A (GB)
IPC: G03B27/62
Filed: 1929-11-20
Abstract: 336,842. Hoh, R., Hoh, W., Keller, K. and Hahne, J. July 8, 1929, [Convention date]. Enlarging, copying, and reducing.-A holder for supporting the original or copy sheet comprises a slotted plate a as of metal, to which the sheet k is attached by clips having jaws d, h, the jaw d being passed through a slot adjacent to one edge of the sheet, so that the sheet may be held against the front of the plate by pressure of the jaw h on its edge, while the jaw d rests against the back of the plate. The slots bare oppositely inclined in adjacent rows. The jaw d of the clip has a cylindrical shank d<1> which rests in the slot through which the jaw has been passed, and allows rotation of the clip to bring the other jaw h over the edge of the sheet. The jaws are carried by arms m pivoted at g, and are forced together as by a spring f or by screw means. Preferably the jaw h is broader than the jaw d.
Patent GB-1510977-A (GB)
Title: Tetrahydropyridine and piperidine derivatives and processes for the production thereof
IPC: A61K31/445
Filed: 1975-08-28
Abstract: The novel piperidine derivatives of the general formula I <IMAGE> in which R1 denotes a saturated aliphatic hydrocarbon radical having 1-12 or a saturated cycloaliphatic hydrocarbon radical having 3-12 carbon atoms, which radicals can be substituted by hydroxyl groups and/or interrupted by oxygen, or a phenyl-(lower alkyl) or cinnamyl radical which is optionally substituted in a specific manner, R2 denotes hydrogen or a lower alkyl group, R3 and R4 independently of one another denote hydrogen, lower alkyl or lower alkoxy groups, halogen atoms up to atomic number 35, benzyloxy or hydroxyl groups, and R3 also denotes a trifluoromethyl group, a lower 1-hydroxyalkyl group, a 1-hydroxycycloalkyl or cycloalkyl group each having 5-8 carbon atoms, or R3 and R4 together denote the trimethylene, tetramethylene or 1,3-butadienylene radical, R5 denotes hydrogen or an alkyl group having at most 4 carbon atoms and A and B denote divalent saturated aliphatic hydrocarbon radicals and B can also denote the direct bond, where A and B together always form 3 ring members and together with R5 have a total of at most 9 carbon atoms, and their acid addition salts have antidepressant activity. They are prepared by hydrogenation of the corresponding tetrahydropyridine derivatives.
Patent GB-478852-A (GB)
Title: Improvements in or relating to electric devices in which an electronic picture is projected on a projection surface
IPC: H01J29/68
Filed: 1936-12-28
Abstract: 478,852. Image intensifiers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENTABRIEKEN. Dec. 28, 1936, No. 35557. Convention date, Dec. 30, 1935. [Class 39 (i)] The composite electron stream of an image reproducer is concentrated by an annular permanent magnet which is arranged coaxially with the device and extends over a portion of the electron path in such manner that rotation of the image is prevented. A reproducer 1 has optical lenses 2, 3 which support a photocathode 6 and a fluorescent anode 7. The cathode is formed by a silver film coated with a mixture of particles of silver, caesium oxide and caesium and then with caesium. The anode may consist of a silver film coated with zinc silicate. An image of a body 8 is projected by the lens 3 on to the cathode and the enlarged or reduced fluorescent image is observed through the lens 2. The lenses are set in rings 4 which bear on the tube and are apertured to facilitate evacuation. The electron beam is concentrated by the magnet 9, the plane of symmetry of which coincides with the plane side of the lens 2. In another form, the image such as a luminous, infra-red or ultraviolet image is projected on to this side of the cathode which is remote from the anode, and the reproduced image may be viewed through a transparent anode or be projected directly on to a photographic plate. The cathode may be thermionic, and the invention may be used to examine the electron emission of cathodes. An electron multiplier may be included. The Specification contains dimensions of the tube and magnet.
Patent GB-784526-A (GB)
Title: A multi-layer heat insulating board
Inventor: ELFVING THORE MARTIN
IPC: B61D27/00
Filed: 1954-12-09
Abstract: 784,526. Laminates. AKTIEBOLAGET ISOFLEX. Dec. 9, 1954, No. 35721/54. Class 140. A laminated heat-insulating board comprises two or more layers of corrugated reflective metal foil 20, 21, such as aluminium foil and one or more interposed blankets of insulating material 22 such as glass fibre mat cemented or glued to the apices of the corrugations. The adhesive may be a solution of a copolymer of vinyl chloride, vinyl acetate, and maleic acid in isopropyl or n-propyl acetate.
Patent GB-1535112-A (GB)
Title: Electrolytic apparatus
IPC: C25B9/19
Filed: 1976-08-31
Abstract: 1535112 Diaphragm electrolysis cells HOECHST AG 31 Aug 1976 [29 Aug 1975 11 March 1976] 36004/76 Heading C7B The cell, e.g. for chlor-alkali production, has two complementary shell portions 1, 10 divided by a selectively permeable (asbestos or fluorinated i-x resin) diaphragm. Each electrode 3, 7 has a current inlet element 2 passing through a shell wall. The electrodes and elements are clamped against the diaphragms by the intermediary of insulating spacers 5, e.g. by a U-frame 12 with bolts 24 and springs 11. The figure shows a series bi-polar setup.
Patent GB-818295-A (GB)
Title: Process for the production of cyanuric chloride
Filed: 1955-12-15
Abstract: Cyanuric chloride is produced by the polymerization of cyanogen chloride under elevated pressure and at a temperature higher than 200 DEG  C., preferably 250-400 DEG  C., in a body of liquid cyanuric chloride.  Liquid cyanogen chloride may be injected into liquid cyanuric chloride with or without stirring.  The product is preferably cooled under pressure to a temperature of below 200 DEG C. and then expanded.  An example is given.
Patent GB-1276058-A (GB)
Title: A camera provided with date recording device
Inventor: GOSHIMA TAKESHI
IPC: G03B17/24
Filed: 1970-07-25
Abstract: 1276058 Photographic cameras CANON K K 25 July 1970 36168/70 Heading G2A In a photographic camera 1, the space 4 between , a film supply chamber 3 and a light shield 2 contains a date recording device which comprises a cylindrical member (22), Fig. 2 (not shown), supporting three rings (19, 20, 21) for the day, month and year respectively, the member containing a light source (17) operated in synchronism with the camera shutter to illuminate a slit (23) in the member (22). The rings (19-21) carry appropriate markings, one marking of each ring being positioned at the slit (23) for imaging, via a mirror 7 and lens 8, on to a portion of film F in the exposure station 2. Associated with each ring (19-21) is a further ring (24-26), a portion of which is visible in a window 29. Each further ring has an associated gear 44-46 which is turned by hand to set the further ring, and hence the ring (19-21) to the appropriate marking. A shield 9 is provided to block the light path from the date recording device except when the shutter is operated. A changeover member is also provided to lock the shield 9 when it is not desired to record a date. An indication of date recording may be provided in the camera view-finder.
Patent GB-1224925-A (GB)
Title: Improvements in or relating to structures, for example prosthetic devices
IPC: A61L27/46
Filed: 1968-07-30
Abstract: 1,224,925. Collagen composition. FMC CORP. 30 July, 1968 [1 Sept., 1967], No. 36224/68. Heading C3H. A unitary three-dimensional structure comprises an intimate and homogeneous mixture of calcium phosphate and a water-insoluble, microcrystalline, ionizable salt of collagen which forms a 0À5% aqueous soliquoid having a pH of 3À2 0À2 and having a stable viscosity for at least 100 hours at 5 C. when stored in a closed container, at least 1% by weight of the collagen salt consisting of bundles of aggregated tropocollagen units forming particles whose maximum dimension in any one direction is less than 1 micron. The collagen salt may be that of Specification 1,143,533. The structures may be reinforced with fibres of polyester, nylon, P.T.F.E., polyolefins, polycarbonates, collagen, amylose or chitin. Fabrics formed from such fibres may also be included. The products may be used as prosthetic devices to replace mammalian bone, or to replace ivory in piano keys, billiard balls and costume jewellery, or to make combs and spatulas. Many specified inorganic, or monomeric or polymeric organic cross-linking agents may be added, and antibiotics and the like may be added when the products are used for prosthetic purposes.
Patent GB-736949-A (GB)
Title: Method of and apparatus for producing suspension of a finely divided solid in a flowing gas
IPC: B01F23/30
Filed: 1953-12-30
Abstract: 736,949. Pneumatic conveyers. STAMICARBON N.V. Dec. 30, 1953 [Jan. 2, 1953; Nov. 28, 1953], No. 36230/53. Class 78 (1). Finely divided solids, e.g. catalysts dispersed on pulverulent carriers, finely divided ores, fine grained carbonaceous material, &c., contained in a hopper 1 are fed by a rotary delivery valve 2 into the casing 3 of a screw conveyer 4 which delivers them into a chamber 5 above a perforated plate 7 where they are fluidized by gas supplied by the pipe 6. This gas, with solid particles suspended uniformly therein, passes through the convergent top 8 of the chamber and the conduit 9 to a reaction space. The casing 4 may be connected to the chamber 5 by an upwardly inclined pipe.
Patent GB-1299597-A (GB)
Title: Improvements in winches
Inventor: HOWLETT FRANCIS CHARLES
IPC: B66D1/12
Filed: 1969-07-18
Abstract: 1299597 Measuring tension electrically CLARKE CHAPMAN-JOHN THOMPSON Ltd 10 July 1970 [18 July 1969] 36262/69 Heading G1N A winch is powered by a direct current motor whose armature current is supplied to an ammeter which is calibrated in terms of rope tension. The arrangement depends on the fact that the torque of a D.C. motor is proportional to armature current. The ammeter may have a dual scale for leaving and rendering, and may be marked with the maximum mooring tension. The armature current may also be used to provide audible or visible warning of excessive or lost tension.
Patent GB-1404673-A (GB)
Title: Method of determing the frictional and mechanical properties of materials and apparatus for putting the method into practise
IPC: G01N3/52
Filed: 1972-08-03
Abstract: 1404673 Determining functional & mechanical properties GOSUDARSTVENNY NAUCHNOISSLEDOVATELSKY INSTITUT MASHINOVEDENIA 3 Aug 1972 36270/72 Heading G1S [Also in Division B6] To determine the functional and mechanical properties of a material, e.g. such properties as the coefficients of sliding and rolling friction, the coefficient of cohesion, the modulus of elasticity, and impact hardness, a test body is set rotating about a horizontal axis and is then dropped to impact against a reference surface, parameters of the impact and subsequent trajectory of the test body being determined and used to calculate the properties of the materials of which the test body and reference surface are made. As shown in Fig. 2, the test body may be a wheel E which can be rotated by a jet of air acting on a turbine wheel 15 fixed to the wheel hub 9 as in Fig. 4. On release of the limbs of a holder 5 the wheel falls vertically on to a horizontal surface K, its trajectory being traced on a coordinate sheet 25 by a jet of marker liquid ejected from the hub. In an alternative embodiment, as in Figs. 5 and 6, a ball N is rotated by a D.C. motor 38 about a horizontal axis and is then released to fall on a reference specimen 29 whose temperature can be varied by means (not shown). The ball rebounds from the specimen 29 and the length and height of its rebounding is meausred by imprints it makes on adjustable plates 45, 52 carrying carbon paper.
Patent GB-345960-A (GB)
Title: Improvements in apparatus for playing games of skill
IPC: A63D15/00
Filed: 1929-11-27
Abstract: 345,960. Table games. BRADSHAW, G., 11D, Regent Street, London. Nov. 27, 1929, Nos. 36281/29 and 10670/30. [Class 132 (ii).] In an apparatus for playing a game of skill wherein sliders are projected by hand along a table means are provided on the table whereby a film of air is formed under the slider during its sliding movement so that the slider will slide freely over the table with very little friction. The table has a smooth cast-iron surface surrounded by an edging 16 of hard wood or rubber, and is divided by transverse grooves 9 into a number of beds. The player's end 8 of the table is divided from the remainder of the table by a groove 7 and is slightly higher so that the sliders when descending to the lower level entrap a film of air beneath the slider and thus reduce the friction. Alternatively, the surface 8 may slope upwardly towards the groove 7. The sliders, of circular shape and formed of castiron, may be provided with a knurled knob 24, Fig. 5, and with a rubber buffer 25 which may be let into a peripheral recess. The under surfaces of the sliders are polished and may be formed with a number of concentric recesses which create air eddies and pick up dust or grit from the surface of the table.
Patent GB-954568-A (GB)
Title: Enol ethers of 6-methyl-3-oxo-4,6-dienic steroids and process for the preparation thereof
Inventor: COOLEY GEORGE
IPC: C07J1/00
Filed: 1961-10-10
Abstract: The invention comprises enol ethers of 6-methyl -3- oxo-4, 6-dienic steroids wherein the etherifying group at the 3-position is an alkyl or cycloalkyl radical of at most 7 carbon atoms i.e. 3-alkoxy or cycloalkoxy -6- methyl-3, 5, 7-trienic-steroids, and their preparation by treating the parent dienes with the appropriate alkanol or cycloalkanol or an orthoformic ester thereof in the presence of a catalytic quantity of hydrogen ions. Preferably a trialkyl orthoformate in the presence of a catalytic quantity of the corresponding alkanol and an acid catalyst is used, in an inert solvent. If the product is a methyl or ethyl ether this may then be reacted with another alcohol e.g. cyclohexanol, to give a different ether. Acid catalysts referred to are hydrochloric, sulphuric, toluene-p-sulphonic and perchloric. The starting steroid may be of the cholestane, androstane, pregnane or spirostane series and may contain unsaturated linkages e.g. at positions 9(11), 11, 15, 16, 17(20) or 20, hydroxy or acyloxy groups at positions 11, 16, 17, 20 or 21, oxo groups at positions 11, 17 or 20, low alkyl groups at positions 1, 2, 11, 16, 17 or 21, ethynyl and substituted ethynyl groups at position 17, methylene groups at positions 11 or 16 or bridging 16 and 17, halogen atoms at positions 9, 11, 16, 17 and 21, isopropylidenedioxy bridging positions 16 and 17, and bis-methylenedioxy at position 17a , 20:20, 21. Examples are given. Specification 886,619 is referred to
Patent GB-1042798-A (GB)
Title: Process for preparation of a fermented beverage
IPC: C12H6/04
Filed: 1964-09-04
Abstract: A process for preparing a palatable, fermented malt beverage concentrate comprises removing by freeze crystallisation a portion of the water from a brewed beer made from wort hopped with an amount of hops substantially below that normally used and recovering the resulting mother liquor or concentrate as the beverage. Any conventional additives normally used in beer which will upon freeze concentration of the beer attain an undesirably high level in the concentrate such as to degrade the tast and other desirable properties, are also reduced in amount.  The beverage concentrate may be reconstituted.  Preferably, the wort is boiled with from 5 to 20 lbs. of hops instead of the normal 34 lbs. per 100 barrels of brew, and from a brewed beer having an alcohol content of from 3 to 8 volume per cent, between 25 and 85 weight per cent of water is removed to yield a beverage concentrate according to the invention having between 4 and 25 volume per cent alcohol content.  The freeze crystallization removes materials giving rise to haze and sediment. The beverage concentrate contains less than 0.3 weight per cent of furfuryl alcohol.  Low-hops beer feed passes through a chiller 5, provided with agitaing or scraping means 10 of straight or helical configuration, to a crystallizer column 13 wherein the reciprocation of a porous piston 20 effects the separation of the mother liquor or concentrate through line 25 from ice crystals which are melted during contact with heat exchanger 17. The concentrate is collected in a tank 26 held under pressure of carbon dioxide.  Part of the melted ice is forced up the column counter-current to the movement of the descending crystals, by the compacting force of the order 400 lbs/sq. in ga. of the piston 20 on the crystals.  The slurry of ice crystals containing, for example, 10-60 weight per cent ice, encounters first a cooling jacket 14 <PICT:1042798/C6-C7/1> supplied with a proprietary refrigerant fluid and then the heating jacket 17 supplied with a hot water-glycol mixture.  The head of the piston is constructed from filter screen material to permit the flow of mother liquor through the head.  All of the concentrate can be recycled through line 30 until sufficient water has been removed.  A proportion of the melted ice can be recycled also from line 24, if required.  The Specification discloses in detail a working example according to which a beverage concentrate having an ethyl alcohol content of 11.2 volume per cent and containing 0.02 weight per cent of furfuryl alcohol, was obtained 50 hours after the formation of a crystal bed in the crystallizer column 13.  The crystallizer column of 4" internal diameter was provided with a piston having a filter screen with a filter area of 12.6 sq. in. and a piston stroke of 8 3/4 in.  In starting up the crystallizer, the piston was maintained at the top of its stroke and no heating fluid was passed into the heating coil 17 until a sufficient bed of crystals was disposed in the bottom of the column on top of the heating coil.
Patent GB-934602-A (GB)
Title: Improvements in or relating to devices for securing two members together
Inventor: BOLTON JAMES CYRIL
IPC: B62J17/00
Filed: 1958-11-13
Abstract: 934,602. Clamp fastenings. BIRMINGHAM SMALL ARMS CO. Ltd. Nov. 12, 1959 [Nov. 13, 1958], No. 36472/58. Class 44. A Windscreen 5, Fig. 1, is secured to a support rod 4 projecting upwardly from the handlebars &c. of a motor scooter &c. by a device comprising two interengageable elements 1, 7 of moulded flexible plastic having respective transverse openings 3, 10 which, in operational position of the device, align to accommodate the rod. To secure the screen to the rod the element 1 is inserted through an aperture 11 in the screen and subjected to axial pressure whilst the element 7 is engaged therewith such that the openings 3, 10 are aligned to allow the rod to be passed therethrough.
Patent GB-1341577-A (GB)
Title: Multi-level tool magazine
IPC: B23Q3/155
Filed: 1971-08-03
Abstract: 1341577 Tool changers DSO "Z M M" 3 Aug 1971 [7 Aug 1970] 36516/71 Heading B3F A multi-level tool storage magazine comprises a vertically arranged rotatable cylinder 6 mounted on a base 5 by means of a disc 7, the said cylinder including a toothed rim 8 by which means the cylinder is rotated, and a number of levels of substantially horizontal tool receiving mountings in which the tools are held with their axes parallel to a line tangential to the cylinder but not intersecting with the cylinder.
Patent GB-906057-A (GB)
Title: Photoelectrical control system
IPC: G08G1/054
Filed: 1958-11-13
Abstract: 906,057. Photo-cell circuits. AGFA A.G. Nov. 13, 1958 [Nov. 30, 1957], No. 36595/58. Class 40 (3). A system effecting control operations in dependence upon changes in the illumination of a photo-cell comprises a valve connectable to two alternative circuits including the photo-cell which cause the valve to conduct and perform a control operation on increase or decrease, respectively, of the illumination on the photocell. Each control operation is accompanied by a change-over to the other circuit. In apparatus for photographing the traffic offenders, a flash tube 33 is brought into readiness by the system as darkness falls. As the illumination of cell 12 decreases the igniter potential of glow tube 7 increases until ignition occurs, energizing a relay 8. Contact 8a short-circuits tube 7, but relay 8 is held on for a short time by the discharge of condenser 11. Contact 8b energizes a flip-flop relay 9 to change over contacts 9a-9e and connect the flash device 1 to the current source by means of contact 9d. The change in the photo-cell connections results in the tube 7 next being triggered by increasing illumination to disconnect flash device 1. Condenser 27 reduces the effect of brief fluctuations near the critical light intensity. In a development, the system may control the connection of tube 33 to different condensers 34 to give a flash of brightness appropriate to the prevailing illumination.