baber/WOPTO huggingface dataset:
Patent GB-1488797-A (GB)
Title: Fluid pressure intensifier
IPC: B05B12/06
Filed: 1973-10-10
Abstract: 1488797 Reciprocating pumps ENERGY SECRETARY OF STATE FOR 10 Oct 1974 [10 Oct 1973] 47421/73 Heading F1A [Also in Divisions El and E2] A fluid-pressure intensifier for use in a system for repetitively ejecting a pulse of liquid at a highpressure to fracture rock. The intensifier comprises a piston cylinder unit, the output side of which is constituted by a chamber 10 to which liquid is delivered for ejection through a nozzle 11  as an extension of the piston, which extension maintains for all positions of the piston within the cylinder a fluid tight seal between the chambers 9, 10 of the cylinder, when the piston 8 is driven to the left through the cylinder. Liquid is delivered from a reservoir 13 to the chamber 10 by a pump 21, filter 22, valve 23 and non-return valve 24 and to the chamber 9 by a pump 12, valve 20, and non-return valve 14. The chamber 9 can be vented through valve 19 and a large bore conduit to reservoir 13 when such venting is required. An air compressor 2 supplies compressed air by reduction valve 17 and conduit system 16 to pumps 12, 21 and valves 19, 20, 23 to operate the valves 19, 20, 23 and pumps 12, 21 associated with the intensifier and by filter unit 3 to an air reservoir 1 to power a second intensifier having an hydraulic output connected to the chamber 6 of the first intensifier. Preferably a pressure of 5000 lbs/in<SP>2</SP> is applied to chamber 6 and a pressure of 6000 lbs/in<SP>2</SP> is applied to chamber 9. Electrical relays permit of appropriate control of valves 19, 23 and of pumps 12 to permit of repetitive ejection of high-pressure pulses of liquid from the orifice 11 when rapid movement of the piston 8 is caused by opening valve 19 to vent chamber 9 to reservoir 13.
Patent GB-1358773-A (GB)
Title: Drain plug
IPC: A47K1/14
Filed: 1971-10-12
Abstract: 1358773 Bath &c plugs SHU-LIEN LIOU and CHIN-CHIH CHUANG 12 Oct 1971 47465/71 Heading A4N A bath &c. drain plug, suitable for use with a conventional drain socket 1, 5, 6, comprises a hollow shaft 3 adapted to be attached to the socket, a spring 4 located within the shaft, a stem 2 mounted within the shaft and co-operating with the spring, and an elastic plug 9 in the form of a diaphragm held by the stem and capable of adopting a first stable position, Fig.1, inwhich the plug is concave towards the socket and obturates the outlet, and a second stable position, Fig. 2, (not shown) in which the plug is concave away from the socket and water may escape between the members 5 and 9. Nuts 7, 11 engage threads on the shaft 3 and either nut may be replaced by a flange. A head 14 on the stem engages the plug 9 and a washer, snap ring or cotter pin engages the bottom end of the stem. The spring may be replaced by a mechanical equivalent. The plug is changed from the first to the second position by pushing downwardly against the centre of the plug and depressing the spring.
Patent GB-1334109-A (GB)
Title: Active filter circuit
IPC: B66F9/14
Filed: 1971-10-13
Abstract: 1334109 Load engaging devices EATON GmbH 13 Oct 1971 [14 Oct 1970] 47573/71 Heading B8H A shelf loading device comprises a base-plate 4 mounted on a stacking crane (not shown), a drive unit 5 movable on guide-rails 2 on said plate 4 by means of rollers 8, and forks 6 mounted on the drive unit 5, the connection between said forks 6 and drive unit 5 being such that said forks 6 can either move in the opposite direction relative to the direction of motion of the drive unit 5 and thus maintain their position relative to the base-plate 4, or alternatively the forks 6 can remain fixed relative to, and thus move along with, the drive unit 5. The drive unit has an electric motor 12 having a transmission 13 on whose drive-shaft on both sides thereof a drive gear 15 is mounted to engage a toothed rack 3 on the base-plate 4 for movement of the drive unit 5, each gear 15 meshing with an intermediate gear 22 mounted on a shaft 20 on which a further gear 21 is mounted in meshing engagement with a toothed rack 7 on the underside of the respective forks 6. If it is desired to hold the forks 6 fixed relative to the base-plate 4 as the drive unit 5 moves from one side of the base-plate 4 to the other side electromagnetic clutches 27 are applied to secure both the intermediate gears 22 against rotation relative to the shafts 20, electromagnetic brakes 29 are released, thus freeing the shafts 20 for rotation and the drive from the drive gears 15 is transmitted to the toothed racks 7 on the forks 6 via the gears 22, 21. However, if the brakes 29 are operated and the clutches 27 released, the shafts 20 and thus gears 21 are secured against rotation relative to the gears 15 and the forks 6 are thus carried along with and thus maintain their position relative to the drive unit 5.
Patent GB-1512429-A (GB)
Title: Magnetic storage element
IPC: G11B23/00
Filed: 1975-11-19
Abstract: 1512429 Magnetic disc records PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 Nov 1975 [22 Nov 1974] 47631/75 Heading G5R A magnetic data storage element 1 adapted to be fitted on a drive spindle 3, e.g. in the apparatus described in Specification 1,512,430, comprises a magnetic disc 5 contained in a casing 4 formed from two circular halves 8, 9 on opposite sides of the dsic which are urged together by springs 11 to form a dust-proof enclosure for the disc, are axially separable to leave an annular peripheral gap for the entry of a magnetic head, and are coupled to the disc (e.g. by the springs 11) to prevent relative rotation.
Patent GB-1099239-A (GB)
Title: Graft polymerization of vinyl compound onto cellulose
Inventor: GOTOHDA MASAO
IPC: C08F251/02
Filed: 1966-10-24
Abstract: A vinyl monomer is grafted in an emulsified system containing alumina or alumina-silica sol on to cellulosic fibres previously subjected to ionizing radiation.  In the examples, the monomers used are styrene, vinyl acetate and n-butyl acrylate and the cellulosic backbones are polynosic rayon, cotton or high tenacity rayon irradiated with electron beams or polynosic rayon irradiated with Co60 g -rays.  The grafting takes place by immersing the irradiated fibres in an aqueous homogeneous emulsion of the monomer and alumina or alumina-silica sol.
Patent GB-1039616-A (GB)
Title: Improvements in or relating to indicators
Inventor: MULLARKEY ALFRED JOHN
IPC: G09G1/10
Filed: 1963-12-03
Abstract: 1,039,616. Cathode-ray tube display systems. STANDARD TELEPHONES & CABLES Ltd. Dec. 3, 1963, No. 47659/63. Heading H4T. Each one of a plurality of parameters to be monitored controls the vertical deflection of successive segments of a single horizontal line trace on the screen of a cathode-ray tube such that departure of any one of the parameters from its intended value results in the vertical displacement of the corresponding segment from the horizontal line trace. The parameters (which may represent the operating conditions in a power-generating station) in the form of D.C. voltages are supplied via respective amplifiers SA (Fig. 3) to sampling switches SS operated by a ring counter RC to supply their outputs sequentially via switch CSW to the vertical deflection plates of a display cathode-ray tube CRT, the horizontal deflection of which is produced by a saw-tooth generator SO triggered by the counter re-set pulse. The amplifiers SA are adjusted so that an unbroken horizontal trace is produced when all the parameters have their intended value and departure from such value then results in various segments of the trace being displaced (Fig. 1, not shown), by an amount and in a direction proportional to the magnitude and sign of such departure with reference to the datum level indicated by segments 4 and 5 (traced during operation of the unused stages 1 and 14 of the counter). During the horizontal re-trace period a pulse from position 15 of the counter operates a suppression switch SW which applies a blanking pulse to the tube grid. For calibration purposes output pulses from a selection of stages of the counter, e.g. from stages 2, 4, 6, 9, 11 and 13, are supplied to the vertical deflection plates via switch CSW and the line scan is then adjusted so that the deflection produced by each pulse is aligned with vertically engraved lines on a plastic sheet (Fig. 2, not shown) mounted in front of the tube screen. The positions of the datum segments 4 and 5 are also engraved on the sheet which additionally carries inscriptions indicative of the various parameters. It is stated that two or more line traces each relating to a different set of signals may be employed.
Patent GB-1022055-A (GB)
Title: Improvements in or relating to directional signal flashers, notably for automobiles
IPC: H01H61/06
Filed: 1963-12-03
Abstract: 1,022,055. Road traffic signals on vehicles. J. M. VERNHES. Dec. 3, 1963 [Dec. 3, 1962], No. 47729/63. Heading G4Q. [Also in Division H2] A directional signal flasher 1 for intermittently lighting lamps 2, 3, 4, 5, on a vehicle comprises three parallel contact-carrying spring blades 8, 17, 26, with blade 8 having an extension 13 engaging blade 26 such that both blades 8, 26 are held away from their equilibrium positions by a thermally expansible resistance wire 15, and a relay 32 having a winding connected in series with wire 15 and the spring blades and for which blade 17 provides the armature. When a control switch 6 is operated to position 6a, say, the current through wire 15 causes it to expand and allow blades 8, 26 to move to their equilibrium positions, while the energized relay 32 attracts blade 17 away from its adjustable biasing spring 19, such that the contacts 12, 24, 25, 28, 29 and 31 all engage, where contact 31 is a fixed contact connected to a tell-tale lamp 7. The wire 15 and the winding of relay 32 are thus short-circuited and the lamps 2, 3, 4, 5 and 7 are lighted directly from current source 22. Wire 15 begins to cool, thus pulling blade 8 and, eventually, blade 26 upwardly to break contacts 25, 28, first, then contacts 12, 24, and finally contacts 29, 31. Current then passes again through wire 15, relay 32 is reenergized and the operation is repeated indefinitely.
Patent GB-1129458-A (GB)
Title: Improvements in or relating to electrophotographic copying machines
IPC: G03D15/02
Filed: 1965-11-11
Abstract: 1,129,458. Electro-photographic copying apparatus. FORMFOTO MFG. CO. Nov. 11, 1965 [Nov. 12, 1964], No.47921/65. Heading G2H. In an electro-photographic copying machine, an original is conveyed by driven rollers 15, 20, 24 past scanning aperture 29 for episcopic projection, by means of tubular lamp 41 and reflector 42, mirror 43, and lens 52, on to exposure aperture 53 past which sheets of sensitized copy paper 59 are fed from magazine 60 in synchronism with the movement of the originals, before development in liquid developer trough 82 and heat fixing and drying on guide plate 101. Originals are delivered from passage 38, while copies are deposited on plate 109 for removal at 110. A blower cools lamp 41 and extracts the hot air through port 102 for discharge through louvres 107 in plate 101 to provide a hot air cushion for descending damp copies. Liquid developer 84 is constantly circulated from supply tank 85 by pump 87 and motor 90. Copy sheets 59, which may be of zinc oxide coated paper, are fed by roller 62 to corona discharge wires 75 for sensitizing. Manually operated shutter 132 controls the intensity of light reflected by mirror 43. Panels 49, 54 define a light tight tunnel from mirror 43 to exposure aperture 53.
Patent GB-1465997-A (GB)
Title: Calculator having merged key codes
IPC: G06F3/023
Filed: 1974-11-07
Abstract: 1465997 Electronic calculators HEWLETTPACKARD CO 7 Nov 1974 [17 Dec 1973] 48227/74 Heading G4A A programmable electronic calculator 10 comprises a keyboard 12 having 35 data and function keys, some of the operations of the calculator requiring the successive depression of two keys (a "prefix" key followed by a function key), a unique binary key code being generated for each key by an encoder 14 and stored in a read-write memory 24 whence it is used to address a corresponding binary instruction in a ROM 22 for use by a CPU 20, certain selected combinations of key codes for a prefix key and a function key being detected by a program stored in the ROM 22 and a single merged code, corresponding to one of the key codes not employed by the keyboard 12, being entered into the readwrite memory 24 in place of the two key codes of each such combination. Each entered key code is checked to see whether it can be prefixed; if it cannot, and if it is not a prefix, the instruction corresponding to that key code is executed; if it cannot be prefixed, and if it is a prefix, the prefix key code is stored in a status register 32, the storage being by overwriting (in the case of the calculator being in the PROGRAM mode of a program/run switch 30, the key code is also inserted into the memory 24). If the key can be prefixed, the calculator checks whether it is prefixed; if it is not, the corresponding instruction is executed; whereas if it is, a merged code routine is started. This routine determines which prefix was assigned, and whether that prefix can be validly assigned to the function key. If the prefix is not valid, the previously set prefix status is cleared from register 32 and the function key code entered into memory 24. If the prefix is valid, the routine checks whether the combination of key codes corresponds to a merged code. If its does not, register 32 is cleared and the function key code is entered into memory 24. If the combination corresponds to a merged code, the routine first checks whether the calculator is in PROGRAM mode; if it is, the prefix key code is selected from memory 24 and the merged code generated and stored in memory 24. If the calculator is in RUN mode, the step of deleting the prefix key code from memory 24 is omitted; the merged code then being transferred to ROM 22 and the corresponding instruction executed. The merged code may be generated from a look-up table or by a subroutine stored in ROM 22. The flowchart of the merged code routine is given in Figs. 2, 3 (not shown); this may be implemented in terms of a program stored in ROM 22 or by equivalent hardware logic.
Patent GB-1430286-A (GB)
Title: Method and apparatus for manufacturing pipes
IPC: F16L9/16
Filed: 1973-10-17
Abstract: 1430286 Pipe winding apparatus VETKOKESINA SpA 17 Oct 1973 [31 Jan 1973] 48451/73 Heading B8G [Also in Division F2] In a machine for making pipes, rotatable mandrels are turret-mounted for indexing from one work station to the next. As shown, Fig. 1, turret 12 supports four mandrels 5 for indexing between stations A-C, and has gears for separately rotating each mandrel about its longitudinal axis. One or more stations may have a mandrel support 4, including a tailstock, which may be mounted on guides 13, Fig. 4. In the simultaneous operations shown: at A liner ribbon 6 is wound on a mandrel and sprayed with resin, e.g. polyester resin, containing glass fibres; at B, a liner is wound with resin-impregnated filaments; at C, a pipe is manually finished; and at D a pipe is removed from a mandrel, e.g. pushed off by a pneumatically operated head. Each station may have a suction hood 9. At least one of the stations may have a bed 1 supporting a trolley 2. The pipes formed may comprise an insulating layer, e.g. of expanded polyurethane, sandwiched by glass reinforced resin layers.
Patent GB-1401237-A (GB)
Title: Articulated belt
IPC: B65G17/08
Filed: 1972-10-20
Abstract: 1401237 Conveyer belts DRAADINDUSTRIE JONGE POERINK BV 20 Oct 1972 [23 Oct 1971] 48552/72 Heading B8A [Also in Division D1] A conveyer belt comprises transverse rods 1, adjacent pairs of which are interconnected by zig-zag coupling elements 2, each coupling element comprising portions 2a, 2b extending between the rods and lying in a common plane, and being interconnected by loop portions 3 which all project to the same side of the common plane. The elements 2 are flexible and are compressed transversely of the belt to urge adjacent loops 3 against one another. The rods and the elements may be metal or plastics.
Patent GB-1011653-A (GB)
Title: Improvements relating to weighing apparatus
IPC: G01G13/00
Filed: 1963-12-09
Abstract: 1,011,653. Automatic feed weighers. O. HOFLIGER and R. KARG [trading as HOFLIGER & KARG]. Dec. 9, 1963 [Dec. 8, 1962], No. 48589/63. Heading G1W. In a weighing apparatus for measuring out quantities of fluent material, weigh containers or pans 8, 9 (Fig. 1) fed by vibrating conveyer feeders 11, 10 respectively are hung alternately on a carrier 3 of a weigher unit 1 such that the change over from one container to the other always takes place at the commencement of discharge or during the discharge of the one container. The weigher 1 may be electronic (not discribed) and may control solenoids, to stop the feed to and to lift a filled container off the carrier 3 and open a bottom discharge flap thereof, also to place the other container on the weigher. The containers may be suspended from the carrier by bows 6, 7. In an alternative embodiment Fig. 4 (not shown), the two containers are suspended from a ring which is suspended from a spring balance and a photo-electric device detects the extension of the spring balance when the load reaches a predetermined weight and initiates the stopping of the feed and the changeover from one container to the other. Instead of by solenoids the containers may be lifted and the flaps opened by cams. Each pan may be fed by two conveyers one for initial filling and the second for topping up.
Patent GB-1089818-A (GB)
Title: Hydraulic machines having reciprocatory pistons
Inventor: SCOTT GEORGE WILLIAM PEARSON
IPC: F03C1/06
Filed: 1963-12-10
Abstract: 1,089,818. Reciprocating motors and pumps. SERCK R. & D. Ltd. Nov. 26, 1964 [Dec. 10, 1963], No. 48664/63. Heading F1A. In an axial piston motor or pump, drive shaft 14 and cylinder block 16 are mounted independently in housing 10 and drivingly coupled to permit slight axial and transverse movement of block 16. Shaft 14 is supported by ball bearings 13 and a plain or needle roller bearing 15. Block 16 is supported by a hydrostatic bearing 21 having peripheral grooves 21a connected to highpressure port 19 via fine bores 21c and passage 10a, and by a hydrostatic bearing comprising part-spherical faces on the block and valve plate 11. The valve plate face has grooves (11a), Fig. 2 (not shown) connected through fine bores (11c) and groove 1 to high-pressure port 19. The valve plate is secured to housing 10 by bolts (9) and is angularly adjustable. The valve plate and cylinder block faces alternatively may be flat and the block supported by bearings 21 at both ends. Portion 14a of drive shaft 14 has a non-circular cross-section, e.g. splines or flats, and block 16 has a bore of corresponding cross-section but of larger dimensions to permit relative movement. Pistons 17 may be spring- loaded against cam-face 12a.
Patent GB-993953-A (GB)
Title: Improvements in and relating to plate type heat exchangers
IPC: B21D53/04
Filed: 1962-12-27
Abstract: 993,953. Plate - type heat exchangers. L. HENDERSON. Dec. 24, 1963 [Dec. 27, 1962], No. 48687/62. Heading F4S. [Also in Division B3] A heat exchanger comprises a stack of flat and corrugated plates 1, 2, 3 (Fig. 1) clamped between end plates 5 by rods 4. The rods extend through the corner regions of the plates which are cut away so that header boxes 6, 7 (Fig. 4) may be brazed or welded to the exposed parts of the rods and to the plates 5.
Patent GB-1073386-A (GB)
Title: Improvements in or relating to the purification of alkali metal halides
IPC: C01D3/20
Filed: 1964-12-01
Abstract: In a process for the electrolysis of alkali metal halides, more especially chlorides, the halide is first purified by fusing, treating while fused with chlorine, passing an inert gas into the molten chlorine treated halide to strip excess chlorine and the reaction products of the chlorine with impurities contained in the halide and then filtering the thus stripped halide.  The inert gas is preferably argon and the filter is preferably of sintered zirconium. The molten halide is preferably treated in countercurrent with chlorine and then the inert gas.  Subsequent electrolysis of a thus purified fused alkali metal chloride (e.g. Na Cl, KCl) is preferably performed in a conventional cell having a flowing cathode of molten lead.  Part of the hot chlorine produced in electrolysis may be used in the purification of further alkali metal chloride.  The molten lead used for the cathode, after vapourisation of the alkali metal alloyed therewith, may be used to melt more impure alkali metal chloride. The chlorine purified alkali metal halide may be used in conjunction with other electrolyte operations e.g. the Dawns cell (when fed with molten halide), or the mercury cathode or diaphragm cell.  The purified halide may be converted to a brine before being introduced into the latter cells.ALSO:Alkali metal halides are purified by fusing the halide, treating the molten halide with chlorine, passing an inert gas into the molten chlorine-treated halide to strip excess chlorine and the reaction products of the chlorine with impurities contained in the halide and then filtering the thus stripped halide.  The alkali metal halide may be sodium chloride or potassium chloride, the inert gas may be argon and the filtering may be effected with a sintered zirconium filter.  In a preferred embodiment the molten halide is treated in countercurrent with chlorine, (which may be pre-heated) and the inert gas e.g. by passing the gases up columns packed with a granular, inert, refractory material, e.g. a ceramic or graphite, down which the molten halide flows.  Treatment with the two gases may take place in separate columns or in different parts of the same column. Temperatures in the treatment zones are selected such that the salt will always be molten, even after contact with the gases. The process is preferably operated in conjunction with a cell for the electrolysis of fused alkali metal chloride, e.g. NaCl or KCl wherein the chloride, purified as above, is electrolysed in a cell using a molten lead cathode and produces hot chlorine gas part of which may be used in the purification of further alkali metal chloride.  The molten lead used for the cathode, after vaporization of the alkali metal alloyed with it, may be utilized to melt the impure alkali metal chloride.
Patent GB-1487790-A (GB)
Title: Device for triggering the discharge of flash tubes
IPC: H05B41/30
Filed: 1975-11-27
Abstract: 1487790 Control systems for flash discharge tubes COMPAGNIE GENERALE D'ELECTRICITE 27 Nov 1975 [29 Nov 1974] 48899/75 Heading H2H A plurality of flash discharge lamps 1-4 are ignited by means of a circuit arrangement which includes a spark gap device 21, a pulse generator 30, an energizing source 28 and various capacitors 8, 18, 25, 32-35. Initially all the capacitors are charged and when it is desired to charge the lamps 1-4 a pulse from the generator 30 is applied to a trigger electrode 31 of the spark gap 31 whereupon the spark gap 21 ionizes and breaks down. Breakdown of the gap 21 allows capacitors 8, 18, 25 to discharge through the primary windings of the respective transformers 6, 15, 23 to induce pulses in the secondary windings of these transformers. The output pulse from the transformer 15 causes an ignition 9 to become conductive and the output pulses from the transformers 6, 23 cause ignition of the lamps 1, 2 respectively whereupon capacitors 32, 33 discharge through these lamps causing an emission of light therefrom, the discharge path for the capacitors 32, 33 including the ignition 9. Lamps 3, 4 operate simultaneously, the circuit arrangement 27 being similar to the circuit arrangement 26. The ignitions may, if desired be replaced by thyristors.
Patent GB-924705-A (GB)
Title: Item dispensing unit
IPC: B65B43/42
Filed: 1959-05-05
Abstract: 924,705. Dispensing articles. D. G. GUMPERTZ. May 5, 1959 [May 5, 1958], No. 49119/62. Divided out of 924,703. Class 116. The subject-matter is included in Specification 924,703, but the claims relate to the operation of the paddle wheel dispensing element by an escapement mechanism.