baber/WOPTO huggingface dataset:
Patent GB-1500314-A (GB)
Title: Process for electrolytically precipitating a metal in pulverulent form and an electrolytic cell for carrying out the process
IPC: C25C7/00
Filed: 1975-04-11
Abstract: 1500314 Electro-depositing metal powder COMPAGNIE ROYALE ASTURIENNE DES MINES 11 April 1975 [12 April 1974 29 May 1974] 15020/75 Heading C7B Pulverulent metal is electrolytically prepared directly from a compound of the metal in an ionized solution, e.g. Zn powder from an alkaline solution (KOH) of ZnO, in an electrolytic cell I at least partially filled with the solution 16 in which the cathode 12 includes a bed 12a of powder of the metal, cathode current input means 12b formed as a horizontal grid is disposed in the midst of the bed, and an anode 15, preferably a horizontal perforate stainless steel disc having an insulating covering 15a on its upper face, is placed above the cathode. Current is passed, e.g. via cathode leads 13 and anode leads 15b, sufficient to prevent deposition of metal in continuous form to form a pulverulent deposit of the metal which is recovered e.g. via insulating suction tube 18 extending through an aperture in the anode. The cathode leads 13 may be received in vertical grooves 14 in the side wall of the cell tank, covered with panels 14a; input means 12b is preferably formed of or coated with the same metal as the cathode bed. As shown in Fig. 3, a suspension of the pulverulent metal may be drawn off via tube 18 by pump 20 and delivered into a settling tank 2, preferably having a dihedral bottom with inclined common edge along which a conveyer screw 22 is disposed to remove the settled metal e.g. into receptacle 25. The settling tank may also be provided with overflow 23 and agitator 24 for spilling solution into a storage tank 3 where it is recycled by pump 30 to four injectors 17 disposed tangentially at right angles, Fig. 2 (not shown) for putting the deposited pulverulent metal into turbulent suspension. The means for drawing off and recycling (pumps 20, 30) are coupled for simultaneous operation and may include time controls for intermittent operation. The tank 3 may also be provided with mixing device 32 and recovery pump 33 connected to supply tank 34 for adjusting the concentration of the ionized solution. A plurality of superposed cells may be provided, Fig. 4 (not shown), each associated with means for supplying ionized solution and removing suspension, which may be controlled sequentially.
Patent GB-698137-A (GB)
Title: Improvements in or relating to the production of phenols
Filed: 1951-06-26
Abstract: In a process for the production of phenols by direct conversion of alicyclic ketones wherein the carbon atom of the carbonyl group is one of the carbon atoms forming a carbocyclic hexatomic ring, the said ketones are contacted with an active carbon catalyst at a temperature between 225 and 650 DEG  C.  The active carbon is any carbon having adsorptive properties, e.g. charcoal, and may be active carbon that has been activated by (i) heating at temperatures greater than those used in the manufacture of charcoal and preferably at between 700 DEG  and 1200 DEG  C.; (ii) the action of an oxidizing gas such as steam, air or chlorine at between 300 DEG  and 800 DEG C.; or (iii) the action of a reducing gas at elevated temperatures, e.g. 300 DEG  to 800 DEG  C. or by combinations of such treatments. The catalyst may contain up to about 20 per cent of promoters, e.g. compounds of heavy metals such as zinc oxide, chromium oxide, iron oxide, molybdenum sulphide, vanadium oxide, copper oxide or the metals themselves.  It may be used as fragments, or on a supporting base, or in a fluidized form or with binding agents as pellets.  The process may be carried out continuously, with the catalyst in tubes surrounded by heat-transfer fluid, and the ketone being vaporized in a pre-heater or in the forefront of the reaction tubes.  The catalyst may also be suspended as a dust in a moving stream of vaporized alicyclic ketone.  The reactor may be made of iron, glass, porcelain or alloys, e.g. chromium steel or chromium-nickel steel.  Liquid ketone hourly space velocities of 0.01 to 25 are suitable.  The ketone vapour may contain diluents, e.g. steam, nitrogen, methane, flue gas or hydrogen.  Other organic materials may be present; thus in the production of phenol from cyclohexanone, cyclohexane and/or cyclohexanol may be present. Examples describe the preparation of phenol from the mixed vapours of cyclohexanone and water using as catalyst (1) and (2) walnut-shell active carbon; (3) activated carbon from wood carbon; (4) to (6) activated coconut-shell carbon with a chromium oxide promotor (prepared from chromium nitrate); (7) activated coconut-shell carbon; (9) lignite active carbon; (10) activated wood carbon with a zinc oxide promotor (from zinc nitrate). In example (8) pure cyclohexanone vapour is used with activated coconut-shell carbon.  The process is applicable to the conversion of other alicyclic ketones such as 3 - or 4 - methylcyclohexanone, 3,3,5 - trimethylcyclohexanone, 3,3,5 - trimethyl - 2 - cyclohexene - 1 - one, 3 - methyl - 5,5 - diethyl - 2 - cyclohexene - 1 - one, 3,3,5 - tributyl - cyclohexanone, 4 - phenyl - cyclohexanone, 4 - phenethyl-cyclohexanone and 1,4-cyclohexanedione.  The process of Specification 640,363 is disclaimed.
Patent GB-436747-A (GB)
Title: Improvements in or relating to speed-responsive friction clutches
IPC: F16D43/10
Filed: 1934-05-18
Abstract: 436,747. Clutches. NEWTON, N. B., Newton & Bennett Works, Valetta Road, Acton, London. May 18, 1934, No. 15120. [Class 80 (ii)] Relates to centrifugal clutches of the kind having weighted levers c pivoted near one end at c<2> anc having a short crank ed arm c<3> engaging the clutch assembly each lever extending over the clutch assem bly and engaging a stop. According to the invention, the movement of the levers c is transmitted to the clutch assembly through a resilient member. In the form shown, the levers c are pivoted on stirrups b secured to the driving flywheel a and act on a plate g connected through springs m to the presser plate i. The separation of the plates g, i is limited by shouldered pins h. The levers c are guided in slots in the abutment plate e. The plate g is urged towards disengaged position by springs, not shown, surrounding pins passing right through the clutch assembly. In a modification, (not shown), the levers c are supported by ball-and-socketjoints in the flywheel a. In a further modification, the levers are pivoted to the cover plate and act through plungers on a plate connected by springs to the presser plate.
Patent GB-1498854-A (GB)
Title: Vehicle washing apparatus
IPC: B60S3/06
Filed: 1975-04-14
Abstract: 1498854 Vehicle washing installation CECCATO & C SpA 14 April 1975 [11 July 1974] 15183/75 Heading B7J A vehicle washing installation comprises a gantry 20 running on rails 20<SP>1</SP>, a trolley 18 movable on gantry rails 19 extending transversely of the installation, and a support 2 pivotally mounted on the trolley by a hinge 16 and carrying a plurality of brushes 3-6, 3<SP>1</SP>-6<SP>1</SP> rotatable about horizontal axes 7-10, 7<SP>1</SP>-10<SP>1</SP>. The support 2 houses a motor-driven endless chain or belt drive for the brushes and may be turned about a vertical axis by a motor 23 driving a gear train 21, 22 to move the brushes through an angle as they pass between the side and end faces of a vehicle. The gantry 20 runs along the rails 20<SP>1</SP> for washing the sides of a vehicle and the trolleys run along the rails 19 across the width of the gantry for washing the end faces of the vehicle, whereby the brush axes are maintained parallel to the vehicle wall being washed.
Patent GB-781440-A (GB)
Title: Improvements in the manufacture of silver azide
Inventor: TAYLOR GEORGE WILLIAM CHARLES
IPC: C01B21/08
Filed: 1949-06-08
Abstract: Cyrstalline silver azide is prepared by precipitating it from an aqueous ammonia solution.  Silver nitrate and sodium azide solutions may be added to dilute ammonia, or acid may be added to a solution of silver azide in aqueous ammonia.  In the case of double decomposition more crystals may be obtained by adding dilute acid, e.g. nitric acid, after mixing the solutions.  A non-ionic surface-active agent may be added to the silver azide solution just before adding the acid.
Patent GB-901366-A (GB)
Title: Improvements in or relating to electrical control circuits
Inventor: RAVENSCROFT JACK
IPC: H01F29/02
Filed: 1958-11-13
Abstract: 901,366. Transformers. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Nov. 13, 1958, No. 16330/60. Divided out of 901,365. Class 38 (2). A system for supplying an electric arc furnace during successive intervals at increasing and subsequently decreasing voltage levels incorporates off-load tap-changing mechanism for the supply transformer directly coupled to tapping switch S11 (Fig. 2) the tappings to be used being selected in a predetermined sequence by a multiposition switch having several levels Z1-Z7 (Figs. 1A and 1B together), means for driving the tap-changing mechanism being controlled through the chain of contacts EA 1 -EH 2 , the - pair of these contacts associated with a tapping being opened when that tapping is in use. Movement of the multi-position switch to effect change from one tapping position to the next is determined by a timing circuit including clock 12 (Fig. 1A) except that for certain positions it is dependent also on a temperature detector 10 and/or a temperature rate detector 11. The first stage utilizes the fifth tap and when manual switch S1a (Fig. 1A) is closed applying D.C. to Z1, either relay D or relay U is energized, depending on which of contacts EA1 to EH2 are already open. Either contactor W (Fig. 2) or contactor R is then energized and the apparatus moves in the appropriate direction until the fifth tap is reached when relay EE is energized, opening EE1 and EE2 which correspond to the fifth tap, so that tap-changing stops. EE3 is closed, energizing O which closes 02 (Fig. 2) to energize contactor G and cause closure of circuitbreaker B to start the furnace. O also closes the timing circuit including clock 12 which at the end of the predetermined time period opens T1 and closes T2. The multi-position switch then steps on to the next position, contactor K is energized with closure of O1 to energize M and cause raising of the furnace electrodes and tripping of circuit-breaker B. The wiper of Z1 makes contact with 6 and energizes U to cause tap-changing to tap 6 when the circuit-breaker is again closed and control by clock 12 is again established. For the fourth step the length of the period during which connection is made is dependent on the temperature detector and on the temperature rate detector as well as on the clock. For the ninth step the period depends on the temperature detector and the clock and for the tenth step on the former only. At the conclusion of the furnace cycle S1a is moved manually to " off " and the multi-position switch moves forward to the first position. The performance preselected can be over-ridden by the use of switches S2 to S7. The correctness of the tap in use is indicated by correspondence of the lamps illuminated in rows 17, 18.
Patent GB-555120-A (GB)
Title: Generative gear and like cutting machine
IPC: B23F1/02
Filed: 1941-12-01
Abstract: 555,120. Gear-cutting. FELLOWS GEAR SHAPER CO. Dec. 1, 1941, No. 15458. Convention date, Dec. 20, 1940. Addition to 536,997. [Class 83 (iii)] The machine for generating the profiles of gear teeth of the like set forth in the parent Specification is modified in that the work spindle and generating cam-shaft mounted on parallel axes on a reciprocable carriage are coupled by a connecting rod of the same length as the distance between the spindles. The frame supports an annular bed 25 which is adjustable about a vertical axis for generating helical gears. A table 26 on the bed carries a reciprocable work carriage 27 moving beneath an adjustable grinding-wheel 28 supported from the part 24 of the frame. The carriage is reciprocated to roll the work past the cutter by a cam 29 coacting with an abutment 30, return movement being effected by a weight, 291. The cam is mounted on a shaft 31 oscillated from a motor 33 in the manner described in the parent Specification. The work-spindle 43 carrying a blank 46 is carried between centres 44, 45. An arm 47 on the cam shaft is connected by a coupling rod 48 to an arm 49 loosely mounted on the work spindle, the length of the rod being the same as the distance between the centres of the work and cam shafts. The arm 49 carries a pawl engaging an index wheel 55 fixed to the work spindle, the pawl being normally held in engaged position by a spring 57 thus coupling the cam and work shafts so that they rotate in unison. For indexing, a motor 61 applies a torque to a pulley 56 on the index wheel through a slipping belt 59. When the work has rolled clear of the tool a pin 62 on the pawl engages a trip 63 on the carriage, the pawl being thus lifted and the work immediately indexed by the applied torque. The trip member is adjustable and is spring mounted so that it can be moved away from the pin 62 on the return movement. The work spindle may be advanced relatively to the cam 29 to increase the depth of cut. For this purpose the cam is keyed to a sleeve 71 loose on the shaft 31, the sleeve having arms 72 embracing a yoke 75, Fig. 10, and connected thereto by keys 73 engaging inclined grooves 74 in the yoke which is itself connected by keys 77 to a collar 78 on shaft 31. The yoke is mounted on a shaft 80 which is spring urged towards an abutment 83. Axial movement of the yoke 75 through the abutment 83 causes the yoke to be rotated through the inclined key-ways 74, this movement being transmitted through keys 77 to shaft 31 and thence to the work spindle. The keys are tapered and are adjusted to take up wear by screws 87. The inclinations of the grooves engaged by the keys 73, 77 respectively may be modified according to the fineness of angular adjustment desired. Traverse of the work carriage forward and' back with indexing at the end of each return traverse is repeated until all the teeth are ground. In some cases the abutment 83 may be actuated automatically to apply a feed after each revolution of the work. The grinding- wheel may be replaced by a milling-cutter. Specification 555,145 is referred to.
Patent GB-1488764-A (GB)
Title: Arrangement of a plurality of roll-like articles
IPC: B65B17/00
Filed: 1975-04-15
Abstract: 1488764 Stacking of roll-like articles TEIJIN Ltd 15 April 1975 [16 April 1974] 15467/75 Headings B8M and B8C A plurality of roll-like articles 4 are capped at their end faces by capping devices, each of which devices comprises a polygonal face wall 1, a side wall 2 extending from the polygonal face wall 1, a protrusion 3 engaged in the hollow core 5 of each article 4 and a cushioning material disposed between the face wall 1 and the adjacent end face of the associated article 4, and the articles 4 are stacked such that the side walls 2 of the capping devices contact each other and the articles are secured in the stacked position. The cushioning material is preferably made of polyurethane foam. The articles 4 can be wrapped with a plastics film to prevent contamination. The protrusion 3 has a through hole 6. The capping device can be made of plastics, wood or metal, In one embodiment the stacked articles 4 are placed on guides 4 of a pallet 7 (see Fig. 4) and secured by bands 9. A band 10 is passed through the tunnel formed by holes 6 and hollow cores 5 to tie the articles 4 together. Other packaging arrangements are shown in Figs. 5-8.
Patent GB-1455316-A (GB)
Title: Liquid pressure master cylinders
IPC: B60T11/16
Filed: 1974-04-08
Abstract: 1455316 Master cylinders AUTOMOTIVE PRODUCTS Ltd 1 April 1975 [8 April 1974] 15476/74 Heading F2F A master cylinder has a pressure chamber between one end of the bore formed by a tube 17 and a hollow piston 19 open at its end nearer the said end of the bore, a sealing ring 33, a stop 10 to limit movement of the ring during retraction of the piston to provide a space between ring and piston when the latter is fully retracted and a passage 36 connecting the space with a reservoir 37, the stop 10 being carried by a stem 9 supported at the end of the bore and projecting towards the piston. The sealing ring 33 is mounted round the stem 9 and urged towards the stop 10 by a spring 34 so that when the piston is fully retracted the working chamber is connected through the clearance between ring 33 and stem 9 and passage 36 to the reservoir 37.
Patent GB-300291-A (GB)
Title: Improvements in or relating to the manufacture of flour
IPC: A21D6/00
Filed: 1927-06-10
Abstract: 300,291. Fisher, E. A., and Jones, C. R. June 10, 1927. Treating with air ; treatment by damping.- Flour is subjected to treatment for a period not exceeding three hours by a current of air at such temperature and humidity as will raise the temperature of the flour to and maintain it within the approximate limits of 130‹ and 180‹ F. without reducing the moisture content of the flour to less than about 10 per cent. The period of treatment depends upon the temperature reached and the original moisture content of the flour and the humidity of the air. The air may be passed over heaters and sprays to raise it to the temperature and humidity appropriate to give and to maintain the desired temperature and moisture content of the flour, and over automatic controls operating on the beaters and sprays so that the air entering the flour chamber may be maintained automatically at the desired temperature and humidity. The air may be circulated over thin layers of flour on trays and then recirculated through the heater and sprays. In this case it is not desirable to reduce the relative humidity of the air below about 60 per cent. Maximum improvement is obtained by 1-2 hours treatment at 140‹ F. Ten to twenty minutes treatment is sufficient at 160‹ F. The flour may be cooled by circulating cold air through the plant. Moisture may be added if necessary, by spraying the flour with finely atomized water. The treatment can be applied to finished flour, to intermediate milling products such as semolina, middlings, and dunst, and to any or all of the various "divides." Specification 300,537 is referred to.
Patent GB-122380-A (GB)
Title: Improvements in Electrodes or Plates for Electric Accumulators of the Alkaline Type.
Inventor: STEWART WILLIS NELSON
IPC: H01M4/76
Filed: 1918-09-25
Abstract: 122,380. Stewart, W. N. Sept. 25, 1918. Electrodes; connexions.-An electrode for a nickel-iron accumulator consists of a number of split tubes a of wire net closed at the ends by wire netting and contained between outer covers e of thick netting, the whole being connected together by wires or sstaples. The edges a' of the tubes a overlap as shown in Fig. 4. The active material such as nickel hydroxide is contained within the tubes a and is inserted in layers which are separated by disks of nickel gauze. The whole electrode is then compressed to flatten the tubes a and bring them into contact with one another as shown in Fig. 5. The terminal lug may be a plate connected to the electrode by wires or staples, or it may be a short wire connected by being passed beneath the wire net e.
Patent GB-1121232-A (GB)
Title: Improvements in or relating to superconductive arrangements
Inventor: BALDWIN JOHN PATRICK
IPC: H03K3/38
Filed: 1966-04-07
Abstract: 1,121,232. Superconductive circuits. MULLARD Ltd. 7 July, 1967 [7 April, 1966], No. 15613/66. Heading H3B. [Also in Division H1] A superconductor device comprises a film of superconductor material exhibiting a magnetic hysteresis characteristic, means for subjecting the whole film to a constant magnetic field, and means for reducing (or increasing) the nett magnetic field applied to a predetermined path in the film to switch this path from the normal (or superconductive) state to the superconductive (or normal) state, in which state it remains after the field returns to the constant value. As shown, Fig. 2, the device comprises a substrate 1 on which are successively vapour deposited a lead ground plane 2, a thin film 3 of tin, and two sets 6, 8 of control conductors, mutually insulated and protected by layers 4, 5, 7 and 9 of silicon monoxide. As shown, Fig. 3, the tin film 3 is provided with input terminals 10 to 16 and output terminals 20 to 26 and is subjected to a constant field H o  produced by a superconductor magnet. Sections of film 3 are switched from the normal state to the superconductive state by applying half-value current pulses to appropriate pairs of conductors 6, 8 so that the nett magnetic field applied to a strip is reduced below the transition level. Consecutive strips are switched to define a superconductive path between an input terminal (e.g. 11) and an output terminal (e.g. 25). The pattern of the control conductors used, Figs. 4 and 5 (not shown), requires that sections of the path are switched separately, but by suitable choice of control conductor pattern the L- shaped parts of the path may be switched by simultaneously applying control pulses to appropriate conductors. A normal path can be produced in an initially superconducting film by reversing the polarity of the control pulses so that the net field is increased over the required sections of the path.
Patent GB-666435-A (GB)
Title: Purifying methyl ethyl ketone by a distillation and extraction process
IPC: C07C49/10
Filed: 1949-06-13
Abstract: <PICT:0666435/III/1> Purified methyl ethyl ketone is obtained from a mixture boiling between 68 and 75 DEG C and comprising methyl ethyl ketone, together with tetrahydrofurane, 2-methyl tetrahydrofurane, formals, acetals and oxides by distilling the mixture with hexane to separate an overhead fraction containing hexane and M.E.K., extracting M.E.K. from the fraction with water, subjecting the aqueous extract to extractive distillation with water to wash acetals therefrom and distil off the aqueous azeotrope of M.E.K., extracting M.E.K. from the aqueous azeotrope with a water-immiscible solvent, and separating the purified M.E.K. from the solvent by distillation. The process is particularly applicable to the separation of M.E.K. from the products obtained by the partial oxidation of butane or a mixture of propane and butane.  The narrow boiling mixture referred to above may be obtained from the oxidation products by extraction with pentane, stripping pentane from the extract, and then submitting it to fractionation.  A mixture of M.E.K., tetrahydrofurane, 2-methyl tetrahydrofurane, formals, acetals and oxides, is fed to distillation-coloumn 1 and a fraction boiling below 68 DEG C is taken off overhead.  Part of the material from reboiler 4 is passed to distillation-coloumn 5 from which the fraction coming overhead up to 75 DEG C is passed, via condenser 6. to distillation-column 8 together with 1 to 4 volumes of hexane.  A fraction coming over from column 8 up to 65 DEG C, containing hexane and M.E.K., is taken off via condenser 9, and fed to extractor 12, together with 4 to 8 volumes of water.  The hexane which separates in extractor 12, is recycled to column 8; while the aqueous extract is fed to distillation-column 13.  Water is supplied to column 13 in sufficient volume to maintain the concentration of water at from 50 to 80 volume per cent on each tray of the column.  The M.E.K./water azeotrope taken off overhead is condensed; the condensate is mixed with 2 to 4 volumes of pentane and introduced into extractor 17.  The upper layer which forms in extractor 17 comprises M.E.K. and pentane, and is fed to distillation-column 18 from which pentane is recovered overhead and recycled to extractor 17, while purified M.E.K. is removed from reboiler 21.