baber/WOPTO huggingface dataset:
Patent GB-485284-A (GB)
Title: Improvements in and relating to magnetic separators
IPC: B03C1/035
Filed: 1936-08-12
Abstract: 485,284. Magnetic separators. FRANTZ, S. G. Aug. 12, 1936, No. 22185. [Class 72] In a magnetic separator having a feed channel through which a grain stream is adapted to pass longitudinally, the polepieces extend longitudinally of the channel on opposite sides thereof, and have cylindrical pole faces contoured to form a gap which gradually decreases in width and have a cross-sectional area wholly enclosing the cross-section of the channel so that magnetic particles in the stream while being carried along are urged in a direction substantially perpendicular to the stream towards the narrow portion of the gap. The pole faces may be contoured so as to produce an isodynamic or an anadynamic field. The mixture to be treated is fed by a pipe 11, Fig. 1, into inclined tubes 9, each tube being placed between polepieces 12 energized by windings 13, Fig. 2, the gap x between the pole faces being given by the formula x9(R - r) equal to a constant, r being the radius from the axis and R a constant. The lower parts of the tubes are divided by a plate 14 to form constricted tubes 18, 17, which discharge the magnetic and non-magnetic particles into receptacles 16, 15 respectively. The mixture may be fed in dry or flooded with water as shown. The stream passing through the tubes may be rendered turbulent by means of water jets or mechanical stirrers. In another form, Fig. 5, the material is fed into a trough 21 containing water up to the level 22, the trough being situated between polepieces similar to the pieces 12. The non-magnetic particles are conveyed by a screw 23 to the pipe 17 and the magnetic particles are urged by a conveyer 24 into the pipe 18. In another form, Fig. 7, the tubes 9 and the pole faces 12 are of helicoidal form surrounding an axis around which the windings 13 are arranged so that particles descending through the tubes, which decrease in width with decreasing radius are at the same time given a rotary motion round the axis. Dividers 14 are placed in, and near, the bottom of the tubes 9 and divide the magnetic and non- magnetic particles, as in the other form described.
Patent GB-1149743-A (GB)
Title: Process for reclaiming a metal descaling electrolyte
IPC: B01J39/04
Filed: 1966-05-18
Abstract: 1,149,743. Regeneration of aqueous solutions of salts of chelating acids. GENERAL DYNAMICS CORP. 18 May, 1966 [24 May, 1965], No. 22190/66. Heading C2C. [Also in Division C7] Spent aqueous electrolytes resulting from the electrolytic descaling of surfaces of metals (which metals form hydroxides which are insoluble in aqueous solutions of pH 10À5 and above, said aqueous electrolyte being a solution of pH 3-7 of an alkali metal or nitrogen base salt of a chelating acid (said acid being soluble in water and forming complexes which are stable at pH 3-7, but unstable at a pH of 10À5 or above) are reclaimed by contact with an alkali metal water-soluble hydroxide in sufficient amount to raise the pH of the spent electrolyte to at least 10À5, separating any precipitated solids and contacting the resultant solution with at least one cation exchange resin to reduce the pH to 3-7 when reclaiming an alkali metal salt of the chelating acid, or 1-2 when reclaiming a nitrogen base salt of the chelating acid and, in the latter instance, raising the pH to 3-7 by addition of a nitrogenous base. It is preferred to heat the solution obtained at the precipitation step in order to drive off volatile components, e.g. NH 3 , and coagulate the precipitate. Specified chelating acids are gluconic, tartaric, diglycolic, glycolic and citric acid. Preferred electrolytes for regeneration are ammonium, sodium and potassium citrates. Preferred soluble hydroxides are NaOH and KOH. The process is illustrated by reference to a flow chart (not shown).
Patent GB-531741-A (GB)
Title: Improvements in devices for the dyeing and bleaching of human hair
IPC: A45D19/02
Filed: 1939-08-01
Abstract: 531,741. Device for applying dye to the hair. CLAIROL N. V., and MEYER, H. H. Aug. 1, 1939, No. 22236. [Classes 81 (i) and 81 (ii)] A device for applying dye &c. to the hair comprises a reservoir a for containing liquid and a holder c to receive a stick g of solid dye and soap. Passages e allow the flow of liquid, which may be hydrogen peroxide, on to the stick of dye. A spring mounted closure member h is provided for one of the passages e. In the modification shown in Fig. 3 a passage e is provided with a valve member o, and the stick g and a stick g<SP>1</SP>, of a soluble oxidising agent are fitted in a socket which is held adjustably in the holder c. Specification 524,293, [Group IV], is referred to.
Patent GB-652465-A (GB)
Title: Thread advancing reel
IPC: D01D10/04
Filed: 1948-08-25
Abstract: 652,465. Thread-advancing reels. AMERICAN VISCOSE CORPORATION. Aug. 25, 1948, No. 22398. Convention date, Sept. 8, 1947. [Class 120(ii)] A thread-advancing reel comprises a cage-like member having a plurality of resilient thread-supporting bars each having a thread-contacting portion which bows inwardly from its ends when the bar is in an unstressed condition before assembly into a reel and means for supporting the bars, in the reel, at their ends and at an intermediate point, so that the threadcontacting portions 52 of the bars are held in straight lines and the intermediate portions exert an inwardly directed force to oppose the centrifugal force developed during rotation of the reel, the bars exerting the inwardly directed force against the intermediate supporting means. The bars 16, seated towards their centre points in radial slots 54 in a disc 19 and held at their slotted ends 51 by discs 17, are clamped together in a longitudinal direction between members 21, 23 by a nut 24 and spring 26. The assembly of bars is carried upon a stationary hollow shaft 10 keyed at 12 to a supporting block 11. The set of bars 16 rotates concentrically about the shaft 10, whereas the other set, 29, carried by shoes 32 and guided longitudinally by rods 39, are mounted for eccentric rotation on bushings 44 and are positively reciprocated by stationary cams 40, 41 with which contact rollers 43, 43a on the shoes. The cam 41 is spring-urged at 42 so that "play" is avoided. Protective sleeves 38 of synthetic rubber &c. seal certain parts of the reel against the corrosive action of treating fluids.
Patent GB-1425372-A (GB)
Title: Prostaglandins and process therefor
IPC: C07F7/18
Filed: 1973-05-10
Abstract: 1425372 Prostaglandins SYNTEX CORP 10 May 1973 [12 May 1972] 22429/73 Heading C2C [Also in Division C3] The invention comprises dl-11α-hydroxy-9- oxoprosta - cis - 5, trans - 13 - dienoic acid, the C 1-6  alkyl, 2-chloroethyl and 2,2,2 - trichloroethyl esters thereof and pharmaceutically acceptable salts thereof and dl-compounds of the Formula V: wherein R<SP>1</SP> is C 1-6  alkyl, 2-chloroethyl or 2,2,2- trichloroethyl and R<SP>2</SP> is C(CH 3 ) 2 O(CH 2 ) x CH 3 , in which x is 0 to 3, and their preparation. dl-11α- Hydroxy - 9 - oxoprosta - cis - 5,13 - transdienoic acid is prepared by treating its 2-chloroethyl or 2,2,2-trichloroethyl esters with reducing agents. The C 1-6  alkyl esters, 2-chloroethyl and 2,2,2-trichloroethyl esters of dl-11α-hydroxy-9- oxoprosta - cis - 5, trans - 13 - dienoic acid are obtained by treating compounds of Formula V above with weak organic acids, compounds of Formula V above are obtained by reacting compounds of Formula IV: where R is -C(CH 3 ) 2 O(CH 2 ) x CH 3  with C 1-6  alkyl, 2-chloroethyl or 2,2,2-trichloroethyl 7- bromohept-cis-5-enoates in inert organic solvents. The following intermediates are also prepared: 1 - bromooct - trans - 1 - ene, 1 - iodooct - trans - 1 - ene, 7 - (2 - tetrahydropyranyloxy) - 5 - heptynoic acid 2 - chloroethyl ester, 2 - chloroethyl 7 - (2 - tetrahydropyranyloxy)- cis - 5 - heptenoate, 2 - chloroethyl - 7 - hydroxy - cis - 5 - heptenoate and the methanesulphonate thereof, 2-chloroethyl and 2,2,2-trichloroethyl 7 - bromo - cis - 5 - heptenoate, dlcis- and trans-4-(2-chloroethoxy)cyclopent-2-en- 1 - ol, dl - 4 - (2 - chloroethoxylcyclopent - 2- en - 1 - one, and dl - 4 - [(1 - methoxy - 1- methyl)ethoxy]cyclopent-2-en-1-one. Pharmaceutical compositions, suitable for oral, parenteral or inhalation, contain the above prostaglandins together with pharmaceutical carriers. The compounds exhibit prostaglandinlike pharmacological properties.
Patent GB-700537-A (GB)
Title: Arrangement in connection with potato lifters
IPC: A01D19/16
Filed: 1951-09-26
Abstract: 700,537. Potato-lifters. LARSEN, N and LARSEN, L.B. Sept. 26, 1951 [Sept. 27, 1950], No. 22491/51. Class 6 (3) A potato-lifter of the type having a share 2 followed by a pair of juxtaposed spinners or grids 6, 7 rotating on nearly-vertical shafts 4, 5, is characterized in that the shaft 4 of the spinner 6 immediately behind the share slopes forwardly whilst the laterally-offset shaft 5 slopes laterally. The bars of the spinner 6 overlap those of the spinner 7 and a fixed grid 8, carried by the share 2, is interposed between them. The frame 1 carrying the share and spinner shafts is mounted on a tractor which drives the shafts through gearing (not shown).
Patent GB-598095-A (GB)
Title: Improvement in vibratory switching device for oscillographs
IPC: G01R13/28
Filed: 1945-09-01
Abstract: 598,095. Oscillographs. PLESSEY CO., Ltd. Sept. 1, 1945, No. 22526. Convention date, Sept. 2, 1944. [Class 37] A vibratory interrupter alternately connects two input voltages so that both are exhibited simultaneously on an oscillograph. The horizontal deflecting plates 14 of a cathode-ray oscillograph 10 are fed from a sweep frequency generator 16, the vertical deflecting plates 15 being fed from an amplifier 17. The two input voltages A, B are supplied to input terminals 29, 30 which are alternately connected to the input of the amplifier 17 by a vibratory interrupter 23. This comprises a vibratory reed 24 clamped at one end and carrying an armature 25 at the other end and also a pair of contacts 26 co-operating with fixed contacts 27. The armature 25 is maintained in vibration by a driver coil 28 energized from the A.C. mains 21 through a secondary winding 31 on the transformer 19 that supplies the cathode-ray tube 10. A phase shifter 32 enables the phase of operation of the interrupter with respect to the phase of the power line to be adjusted. Alternate half-cycles are cut-off by a half-wave rectifier 33, or alternatively the armature 28 may be replaced by a permanent magnet having poles at the sides to the right and left of the axial line of the driver coil. A reversing switch may be provided for inverting the connections of the inputs A, B to the fixed contacts 27 or alternatively for reversing the polarity of the rectifier 33. Potentiometer resistances may be connected across the input terminals 29, 30 so that the input voltages may be individually adjusted. A synchronising voltage may be selectively impressed on one or other of the two signal inputs A, B by means of a double-throw switch.
Patent GB-1273966-A (GB)
Title: Thermo-mechanical support device
Inventor: SUOZZO LEONARD SALVATORE
IPC: F16L3/20
Filed: 1971-04-19
Abstract: 1,273,966. Pipe support. L. S. SUOZZO. 19 April, 1971 [17 Aug., 1970], No. 22542/71. Heading F2P. Equipment, such as a pipe 10, which is subject to thermal expansion, is supported by a device comprising actuating means, connected to the pipe at two locations, which include a rigid member 22 and a mechanism 23 which converts longitudinal movement of the member 22 into rotary motion, this being transmitted to a coupling assembly connected to a fixed support 60. As the pipe 10 expands axially, a threaded portion 28 of a rod 25 coupled to the rigid member 22 is displaced longitudinally to rotate a nut 31, mounted on bearings 32 to a support plate 19, and carrying a bevel gear 33. A train of gears 34, 35, 42 transmits this rotation to a second screw member 43 supported on a thrust bearing 48 to axially displace a nut 50 along the screw. The nut 50 is connected to the fixed support 60 by means of plates 51, 52, coupling rods 56, 57 and a pivot pin 58 and is prevented from rotating with the screw 43 by pins 53 which project through vertical slots in a bore portion 21 secured to the support plate 19. The gearing is such that as the pipe 10 expands axially the screw 43 is lowered through the nut 50 to lower the pipe, whilst maintaining its support, through a distance which is a multiple of the axial expansion between brackets 14, 17 to a position where the pipe is unstrained by the thermal change. Upon subsequent cooling of the pipe the direction of rotation of the nut 31, gearing and screw 43 are reversed and the pipe is raised. In other embodiments, the movement of the rigid member 22 is transmitted to a screw engaged with the nut 31 by means of a pivoted bell-crank lever (73) (Fig. 2, not shown) or by a straight lever (90) (Fig. 3, not shown) attached to the rigid member at a pivot (74) intermediate its end portions.
Patent GB-497614-A (GB)
Title: Method and apparatus for filling coal storage bunkers
IPC: C10B31/00
Filed: 1937-08-17
Abstract: 497,614. Charging loading-bunkers. WOODALL-DUCKHAM (1920), Ltd., and McEWAN, J. H. Aug. 17, 1937, No. 22550. [Class 78 (iv)] Coal or like material is delivered to a storage bunker in a succession of thin layers over the entire area of the bunker by apparatus which distributes it in a succession of rectilinear parallel passes over the bunker The Figure shows a bunker in plan, divided into four compartments by partitions 6, 7. Twc wheeled frames 9 travel slowly to-and-fro along the longitudinal walls of the bunker, and thus move the bridge 10 carrying the reversible endless-belt conveyer 11. Carriages 12, carrying reversible endless belts 13, move to-and-fro across the bunker in the frames 9 at a faster rate than frames 9 progress longitudinally. The material is delivered by a conveyer (not shown) to the belt 11 at the intersection of the partitions 6, 7, and is delivered thence to one of the belts 13, which spreads it evenly over one compartment of the bunker; all the compartments being filled in turn. In a modification, the frames 9 only move intermittently between successive traverses of the carriages 12.
Patent GB-295051-A (GB)
Title: Process for manufacturing, out of by-products, ferrous bricks for use as iron ore invarious metal furnaces
IPC: C22B1/24
Filed: 1928-08-03
Abstract: 295,051. Soc. Lorraine des AciÚries de Rombas. Aug. 6, 1927, [Convention date]. Briquetting and agglomerating processes. - Briquettes to be used as ore in metal furnaces are made from a dampened mixture of blastfurnace mouth dust, coke dust, and ferrous flux by means of an ordinary press, and are fired in a kiln of the kind used for clay bricks., The ferrous flux consists of ashes containing oxides, preferably ferrous oxide.
Patent GB-188423-A (GB)
Title: Improvements in grippers for looms for weaving tufted or pile fabrics
IPC: D03D39/02
Filed: 1921-08-26
Abstract: 188,423. Brintons, Ltd., and Brinton, R. S. Aug. 26, 1921. Pile-fabric looms.-In grippers for looms for weaving tufted or pile fabrics, the lower jaw 1 of each pair has a tongue 3 of triangular shape adapted to pass through a central slot in the upper jaw 5, a lateral opening 6, through which the tongue projects, being provided to prevent the slot from becoming choked with fluff. The jaws have interengaging teeth, and the arm supporting the lower jaw is resilient. Specification 15680/90 is referred to.
Patent GB-170145-A (GB)
Title: Improvements relating to machines for making wafer and like biscuits
IPC: A21B5/02
Filed: 1920-07-30
Abstract: 170,145. Hollings, H., and Hollings, E. July 30, 1920. Waffle, wafer, and like baking-apparatus.-Flat, cone or cup wafers are separated from the usual hingedly - connected baking-irons by a plurality of longitudinally-slidable wedges a which are normally housed, with the baking-iron surface, in wedge-shaped grooves d. When flat irons are employed, the wedges a contact with the under surface of the biscuit and lift it to facilitate removal. With cupped irons the wedges contact with the plane surfaces between the cup wafers, which are formed integrally therewith. Fig. 3 shows one iron in which the wedges are retained in position by headed bolts e which move in slots f, and are simultaneously operated by the handle m on the fhaft h on which are mounted the fingers j engaging with slots k in the wedges. The weight of the handle m returns the wedges to the flush position. In a modification, bars mounted at the ends on rocking levers are housed in the grooves, the bars being raised from the baking-iron surface by simultaneously operating the levers. Either or both irons may be provided with wedges.
Patent GB-295931-A (GB)
Title: Improvements in or relating to methods of and apparatus for applying material to cores
IPC: B29C48/05
Filed: 1928-08-07
Abstract: 295,931. Electrical Research Products, Inc., (Assignees of Martell, C., and Hagen, B. A.). Aug. 20, 1927, [Convention date]. Extrusion machines.-A method of applying material to a core such as a cable consists in passing the core through one or more vacuum chambers and then through a chamber containing the coating material at a pressure less than atmospheric pressure. The invention is particularly applicable, to continuously loaded electric conductors, such as submarine cables, the coating material being a semi-fluid bitumen which films the spaces between the turns of the loading material or tape and between the latter and the conductor. The apparatus comprises a vacuum chamber 10, Fig. 2, within a casing 11, communicating with a vacuum pump by a pipe 12. Stuffing boxes 15, 16 at the ends of the casing 11 permit the passage of the conductor 14. Two resilient discs 18, spaced apart and secured by means of a sleeve 19 and a nut 20, assist in keeping the chamber 10 airtight. The conductor passes from the casing 11 through a tube to a second chamber 26, also connected by a pipe 31 with the pump. The chamber 26 is formed in a casing 27 which is divided into two chambers 26, 30, by a partition 29. The chamber 30 contains semi-fluid coating material, supplied through a funnel 34, and communicates with the vacuum pump by a pipe 32. A removable glass window 38 is provided in the cover of the casing 27. The cable passes from the chamber 30 through a restricted conduit 40 to an extruding device 42, in which an external coating of insulating material 43, such as gutta percha, is applied to the cable by means of nozzles or dies. Fig. 4 shows a cross-section of. the cable after impregnation, the semi-fluid . material 35 surrounding the core 22, while the spirally wound loading material 23 is embedded in the former.
Patent GB-677436-A (GB)
Title: Improvements relating to gas heated furnaces
Inventor: BRATT LAWRENCE ASHLEY
IPC: F23C99/00
Filed: 1949-09-02
Abstract: 677,436. Furnaces. RADIATION, Ltd. Aug. 30, 1950 [Sept. 2, 1949], No. 22764/49. Classes 51 (i) and 51 (ii). A gas-heated furnace has an assembly of gas-heated radiants f of the type shown in Specifications 565,879 or 570,067, [both in Group XI], disposed along one or more of the inner walls b and heated by luminous-flame burners d supplied by pipes e. The radiants are supported on the base a and their upper ends are secured by a bar h.
Patent GB-237758-A (GB)
Title: Improvements in lifting jacks
IPC: B66F3/16
Filed: 1924-09-27
Abstract: 237,758. Maxfield, A. I. B. Sept. 27, 1924. Jacks.-In jacks of the multiple screw type the outer screw 2 is prevented from rotating by a blade or other spring 8, spring plunger &c. mounted in the standard until it has been raised or lowered to the fullest extent. At the end of its movement stops 11, 12 on the screw 2 engage shouldered portions B formed at the ends of the thread 10 in the actuating nut 5 and the screw is rotated with the nut against the resistance of the spring 8.
Patent GB-1486778-A (GB)
Title: Stereo disc cutter
IPC: H04R1/16
Filed: 1975-01-29
Abstract: 1486778 Stereophonic record cutters J MARTIN 29 Jan 1975 [22 May 1974] 22818/74 Heading H4J A stereophonic cutter of the moving coil type has a cutting stylus holder 18 connected by two rods 20, mutually at right angles, to respective moving coils 16 in the air gaps of magnetic circuits 12, 14. Each magnetic circuit uses an annular permanent magnet 22 and polepieces 24 and 26. Each polepiece 24 has a central boss 24a embraced by a coil 16. Each coil 16 consists of a windings impregnated with epoxy resin and may have a main driving winding and a feedback winding. Feedback signals from the feedback windings are amplified by a directly coupled amplifier and are fed back to the input of the stereo signal power amplifier. Each boss 24a has a bore 24b in which is secured a rod 20 by silicone rubber 32. The remainder of the bore 24b is filled with silicone grease. A cross-shaped member 30 is adhered to each rod 20 and the outer ends of its legs 30b are secured to the coil. A connecting tube (not shown) may be provided between the member 30 and coil 16. A damper 34 surrounds the otherwise open parts of the rods 20. This includes a support plate 36 (Fig. 2) fixed to a back plate (not shown) to which the magnetic circuits 12 and 14 are also fixed. L- shaped brackets 40 on opposite sides of the rods 20 are held to support plate 36 by screws 42 and damping layers 44. A screw 46 varies the distance apart of the brackets 40 and hence the compression of layers 44. The rods 20 are of stainless steel (e.g. hypodermic needles), stylus holder 18 is of aluminium and the cross-shaped members 30 are of hard laminated plastics material. An alternative embodiment (Fig. 3, not shown) has each feedback coil (52) stationary and physically separated from the main driving coil (54) and co-operates with a solid metal armature (56) secured to its respective rod 20 and cross-shaped member 30. The stylus holder (60) is provided with a tapered threaded portion (60a) for receiving the stylus and a tapered nut (62) for co-operation with the threaded portion (60a) to securely clamp the stylus. A torsion rod (64) secured to the rods 20 or stylus holder and to the back plate 38 further assists damping of the rods 20.
Patent GB-425397-A (GB)
Title: Improvements in and relating to heating walls with internal heating flues for low temperature carbonizing ovens
IPC: C10B29/02
Filed: 1934-08-07
Abstract: 425,397. Coking - ovens. PUENING, F., 2, Eiland, and KRETZ, T., 54, Richard Wagner-strasse, both in Essen, Germany. Aug. 7, 1934, No. 22819. Convention date, Aug. 16, 1933. [Class 51 (ii)] Metal heating-walls for low-temperature coking-ovens of the kind described in Specification 362,522, are built up of plate strips of channel and like section welded together, each strip comprising a web portion 1 and portions 2 forming parts of the outer surface of the wall. With this construction the welds 3 are all exterior and the webs form the inner walls of the flues. Figs. 5 and 7 show representative forms in which the sections instead of being plain channels are additionally angled, thus giving rise to surface ribs adapted to increase the heating surface. In assembling, ribs are arranged opposite recesses to obtain uniform coal thickness. The strips may all be similar as in Fig. 5, or strips of different sections may alternate as in Fig. 7.