baber/WOPTO huggingface dataset:
Patent GB-978989-A (GB)
Title: Decolorizing and recovering naphthalene 2,6-dicarboxylic acids
Inventor: BOHRER BYRON BENARD
IPC: C07C51/47
Filed: 1963-11-22
Abstract: A method for removing colour from naphthalene 2, 6-dicarboxylic acid comprises (a) dissolving the naphthalene 2, 6-di-carboxylic acid in a N-dialiphatic substituted formamide solvent having from 1 to 4 carbon atoms in each substituent, (b) contacting the solution with a solid absorbent e.g. activated charcoal thereby removing the colour from the acid, (c) passing the solution containing decolorized naphthalene 2,6-dicarboxylic acid into a first cell of a dialysis chamber containing at least two cells separated by a membrane substantially permeable to the amide and substantially impermeable to the acid, (d) recovering decolorized naphthalene 2,6-di-carboxylic acid from said first cell, and (e) removing the amide from a second cell of said dialysis chamber. The membrane may be made from polyethylene, polypropylene, polytetrafluoroethylene, a polymer of 2-chlorobutadiene, a copolymer of butadiene and styrene, a copolymer of isoprene and isobutylene, a cross-linked copolymer of ethylene and propylene, or vulcanized natural rubber.  The second cell may also contain a carrier liquid which may have a boiling point above the boiling point of the amide such as water, ether, alcohol, glycol, glycerol, or a N-paraffinic hydrocarbon.
Patent GB-1480523-A (GB)
Title: Reference card indexing device
IPC: B42F17/34
Filed: 1974-10-25
Abstract: 1480523 Card indexing devices T NONAKA 25 Oct 1974 [10 April 1974] 46394/74 Heading B6E A card indexing device comprises a base 10, Fig. 3, having a chamber 14 in which is located a selection means including a push button 46 which when depressed causes a finger 48 to engage a tab 72, Fig. 4, of an index card 68, to raise unwanted cards and present a selected card when the lid 52 is pivoted into an open position and the unwanted cards are held by a belt 60 pivotally presented on the inside of the lid. On depression of the push button 46 a lever 44 causes a detent 50 to pivot and disengage recesses 59 in the lid and the bail 60 is urged into cooperation with the cards 68 by resilient tongues 62 on the bail. On closing the lid, the bail is cammed out of engagement with the cards by cams 16.
Patent GB-1450711-A (GB)
Title: Reflective roadway marker
IPC: G02B5/126
Filed: 1973-10-08
Abstract: 1450711 Road surface marker studs ANCHOR HOCKING CORP 8 Oct 1973 [12 Oct 1972] 46806/73 Heading E1G [Also in Division G2] A solid roadway marker stud, which may be reflex-reflective, comprises an inverted dish of tempered glass having an impact strength of at least 10,000 p.s.i., the dish being filled with a potting compound and the lower face of the dish and compound being coated with adhesive for securement to the road. The underside of the glass dish is stippled to improve adhesion. As shown the stud is stepped to provide opposed set-back side walls 16 moulded to provide protruding reflex-reflective balls 20 having inner and outer part-spherical and partcylindrical surfaces of different radii and centres. Fig. 8 (not shown) illustrates a marker moulded to provide a single reflective ball. Figs. 9-15 (not shown) illustrate a circular dished glass marker having a single front wall (116) moulded to provide reflex-reflective balls, the top surface tapering rearwardly down to the road surface; such tapering one-sided marker is suitable for pedestrian crossings, Fig. 16 (not shown).
Patent GB-1439974-A (GB)
Title: Automatic ignition advance method and installation for an intenal combustion engine
IPC: F02P5/155
Filed: 1973-10-08
Abstract: 1439974 Ignition systems; timing ignition DUCELLIER & CIE 8 Oct 1973 [13 Oct 1972] 46861/73 Addition to 1235407 Heading F1B In a method of obtaining an automatic ignition advance for an internal combustion engine as claimed in claim 1 of Specification 1235407 there is added to the voltage which increases with the angular separation between a reference position of the engine flywheel and the actual position of the engine flywheel (voltage U1) a variable voltage U3 dependent upon at least one of the internal combustion engine operational parameters so that when the voltage U1+U3 coincides with the voltage which depends on the speed of rotation of the engine (voltage U2) an ignition impulse is obtained triggering the ignition spark at that moment. As shown an integrator 27 supplies the voltage U1 proportional to the angle of rotation of the main shaft from a reference point to which is added the voltage U3 from a sensor 28 dependent on at least one parameter, for instance the vacuum within the engine inlet manifold and/or the temperature measured at any point in the engine. The tachometer generator 3A comprises a generator 29 supplying an amplifier 30 from signals emitted by a shaping device 21 associated with a detector 20 operated by the engine. The amplifier 30 supplies the voltage U 2 . The impulse generator 7A comprises a comparator 23 and a monostable oscillator 22. The outputs of the comparator 23 and the monostable oscillator 22 are applied to an amplifier 24 and the output of the latter is applied to the input of an ignition device 25. At starting the ignition system is directly fed from the monostable oscillator 22 by way of the amplifier 24.
Patent GB-1160267-A (GB)
Title: Improvements in or relating to Semiconductor Devices
Inventor: ROBERTS DEREK HARRY
IPC: H01L29/00
Filed: 1965-11-05
Abstract: 1,160,267. Semi-conductor device. PLESSEY CO. Ltd. 7 Oct., 1966 [5 Nov., 1965], No. 47103/65. Heading H1K. A semi-conductor device comprises an insulating support member in the form of a single crystal having a surface cut parallel to the 112 crystal plane, and deposited on said surface a single crystal film of semi-conductor material of one conductivity type and a junction in said film disposed in a plane at right angles to the interface between said film and support member and formed by injecting an impurity which forms the opposite conductivity type semiconducting material into a predetermined area of said one conductivity type semi-conducting material. A quartz or α-alumina substrate 2 is chemically polished and has a 2Á film of N-type Si 1 grown thereon by thermal decomposition of silane. Boron is diffused into layer 1 through an oxide mask to give a square P- type region 3 with PN-junctions 4 and 6. The diode may be used as a microwave detector or an ultra-fast switching device because of its low junction capacitance. Transistors or IGFET's may also be made.
Patent GB-1499119-A (GB)
Title: Filter
IPC: B01D33/04
Filed: 1975-11-20
Abstract: 1499119 Filter apparatus BIRD MACHINE CO INC 20 Nov 1975 [16 Dec 1974] 47306/75 Heading BID  A filter for separating solids from a slurry is of the type forming the subject matter of U.K. Specification 1499120, but is characterised in that the means to inhibit initial drainage of slurry liquid through the filter medium to allow formation of a settled cake thereon comprises backflushing means for supply of liquid to the underside of the filter medium at the settling zone for passage upwardly through the medium. The exemplified filter constructions are a horizontal rotary pan filter and a moving belt filter.  The horizontal rotary pan filter, showed in schematic, opened-out form in Fig. 5, comprises a plurality of pans 10, 12, 14 &c of segment form rotatable about a central distribution box and also each pivotable about a horizontal conduit mounted centrally below the pan and connected to the distribution box for application of suction or supply of backflushing liquid. The sequence of operation is (i) At stage A, the pan is being returned to the horizontal and vacuum dried after pivoting to remove cake at washing at stage G of the previous cycle: (ii) At stage B, slurry is supplied from feed means 75 and settles to form a cake, backflushing liquid being supplied by pump 77; (iii) At stage C, liquor is removed from above the cake, e.g. by suction pipe 54 or by tipping the pan. As liquor removal nears completion, suction is applied from below the filter medium, the filtrate being led back to slurry feed tank 71; (iv) At stage D, a first washing liquid is applied from means 84 and removed by suction through the filter medium, the washing liquid originating from second washing stage E and the filtrate from this stage providing the backflushing liquid for stage B; and (v) At stages E and F, washing is repeated. The moving band filter shown in Figure 6 is operated in an analogous manner. The band 100 is positioned between side walls 122 and is moved through feed zone 130 and settling zone 132 wherein backflushing liquid is supplied by line 134 and removed together with slurry liquor, by suction pipe 124 from above the cake. This is followed by filtrate removal by suction means 131 and then passage through washing zones above suction boxes VC. Cake is removed by scraping at end roller 114 and the returning band is washed at 116. The band may be moved intermittently by reciprocation of the suction boxes. Blank section 136 is provided to prevent liquid flow through the belt whilst no suction box is therebeneath and blank section 136 prevents short circuiting of liquor under suction pipe 124.
Patent GB-1405476-A (GB)
Title: Methods of examining particles
IPC: G01N33/49
Filed: 1972-10-13
Abstract: 1405476 Particle analysis COULTER ELECTRONICS Ltd 13 Oct 1972 [14 Oct 1971] 47378/72 Heading G1N In a Coulter-type particle analyzer, to clearly distinguish between different particles of the same size e.g. red and white cells, or different forms of white cells they are treated as by lysing so that they acquire detectably different R.F. impedances. This method is described with reference to the apparatus disclosed in Specification 1248169 using two different measurement signal frequencies. DETAILS. It is suggested that polystyrene particles which are unaffected by lysing may be added to the suspension to give a datum signal. Detergents, plant alkaloids, and enzymes suitable as lysing agents are mentioned. Selected signal ranges may be excluded by opposing bias.
Patent GB-1281045-A (GB)
Title: Spinning-top
Inventor: BAER HENRI
IPC: A63H1/06
Filed: 1969-09-26
Abstract: 1281045 Spinning-top with electric motor. MELADOS SA 26 Sept 1969 47485/69 Heading A6S A spinning-top comprises a body 1 with a symmetry axis AB; a handle 10 by which the top can be grasped; an electric motor 3 mounted within the body with its axis coincident with that of the body, having a stator and a rotor, one of which is mounted in or on the body and the other of which is torquetransmittingly connected to the handle; and an electric circuit for supplying current to the motor; suspension of the top by its handle causing relative axial movement between the handle and the body thereby operating a switch, e.g. comprising contacts 13 1 , 13 2  that allows current to be supplied to the motor, thus causing the body to rotate. In the embodiment illustrated in Fig. 1 the handle 10 is connected to the shaft 9 of the motor; batteries 5 are placed in housing S4, and balance weights 7 are placed in housings 6, which housings are spaced symmetrically about AB. Among other optional features are a propellor disposed on the handle to keep the switch closed when the top is in motion; an electric lamp which switches off when the top rotates at high speed; a musical device having vibratory reeds; also a support on which the top may rest by which the batteries may be recharged (by means of external contacts on the body of the top and recharging means comprising conducting rings disposed on the support). Other forms of switch and Handle arrangements are also described.
Patent GB-987366-A (GB)
Title: Improvements in or relating to the manufacture of copying sheets
IPC: B41M5/10
Filed: 1963-12-02
Abstract: Emulsions are described which can be used to make the transfer coating of "carbon" paper (see Division D2).  In Example 3, phthalocyanine is dispersed in an aqueous solution of methylcellulose.  A hydrocarbon wax made by Fischer-Tropsch synthesis is dispersed in water, using a water-soluble non-ionic fatty-alcohol derivative as emulsifying agent.  These two dispersions are then mixed.ALSO:Emulsions are described which can be used to make the transfer coating of "carbon" paper (see Division D2).  In Example 2, a hydrocarbon wax made by Fischer-Tropsch synthesis is dispersed in water, using a water-soluble non-ionic fatty alcohol derivative as emulsifying agent.  Carbon black is dispersed in a solution of gum arabic in water.  The components are then mixed.  In Example 3, phthalocyanine is dispersed in an aqueous solution of methyl cellulose, and used in place of the carbon black dispersion of Example 2.ALSO:Copying sheets are made by preparing a solution of a first binding-agent component in a liquid, volatile solvent (e.g. water) in which a second binding-agent component and pigmenting matter are dispersed, coating a sheet with the solution, and evaporating the solvent, so that the binding-agent components form a stable disperse system with the pigmenting matter in the outer phase. The component forming the outer phase may be the dissolved one, and may be a film-former, e.g. gum, gelatine or methyl-cellulose. The component forming the inner phase may be the suspended one and may be a non-film-former, e.g. a vinyl chloride butyl acrylate copolymer or a wax.  Pigments referred to are carbon-black and phthalocyanine.
Patent GB-1519524-A (GB)
Title: Butt splicer for butt-joining a fresh web to an expiring web
IPC: B65H19/18
Filed: 1975-11-19
Abstract: 1519524 Unwinding webs AGFA GEVAERT 4 Nov 1976 [19 Nov 1975] 47696/75 Heading B8R A butt splicer for joining a fresh web 11 to an expiring web 12 comprises relatively movable web clamps 16, 17, 18 which initially clamp the webs in different paths; both webs 11, 12 are then cut, e.g. by blade 51 and one of the webs is cut again, e.g. by blade 50, the resulting strip being removed, e.g. by plough 52 so that a tape applicator 43 can join the webs while they are stil clamped. The new web 11 is firstly joined to a rod 73 which is moved up to position 83 and then air is admitted to air motors (28, 29) Fig. 4 (not shown) to move the clamps 16, 17, 18 together and air motor 46 moves a cutter carriage 42 across the webs to cut them and remove the excess strip. In one embodiment a butt control bar 36 is advanced to shift web 12 to ensure no web overlap occurs and in another embodiment (Fig. 8) plate 32 has a recess (91) into which the web ends are pushed applicator 43 so that the ends slightly move apart. Cutters 61 then remove excess tape and clamps 16, 17, 18 are moved apart to allow free movement of the new web 11 which movement may be started by clamp 18 actuating a microswitch. In the embodiment of Fig. 8 the applicator 43 and cutter carriage 42 can move together. A milling blade (100) Fig. 9 (not shown) with suction cleaning device (105, 106) may replace blade 51 and as a consequence web separation is not required to prevent overlap.
Patent GB-1126585-A (GB)
Title: Nuclear reactor and control rod therefor
IPC: G21C7/113
Filed: 1965-11-11
Abstract: 1,126,585. Controlling nuclear reactors. COMBUSTION ENG. Inc. 11 Nov., 1965 [30 Dec., 1964], No. 47979/65. Heading G6C. A control rod for a nuclear reactor comprises a long flat flexible blade. The control blades pass through narrow gaps between the straight sides of square or hexagonal assemblies of fuel elements in a pressurized water reactor. The flexibility of the blades permits the gaps between the assemblies to be reduced in width. Guides for the flexible blades may be provided above the reactor core. The blades may be carried by H-, Y-, or cross-shaped members connected to drive mechanisms. Each blade may be divided into a plurality of rectangular plates, Fig. 6 (not shown).
Patent GB-1094872-A (GB)
Title: Process for the preparation of interpolymer latexes
Inventor: ARCANGELI MARINO
IPC: C08F2/22
Filed: 1964-12-30
Abstract: Copolymer latices are produced by emulsion polymerization in an aqueous medium of a monoethylenically unsaturated carboxylic acid, a monoalkenyl aromatic monomer containing 6-10 carbon atoms in its aromatic nucleus, and an open-chain conjugated diene of 4-9 carbon atoms; an initial monomer increment comprising at least some of the acid and diene is dispersed in the aqueous medium at a temperature of from 30 DEG  C. to the polymerization temperature prior to the adding of polymerization catalyst, polymerization is then induced and/or maintained and the remainder of the monomers is added.  The unsaturated carboxylic acid may be acrylic, fumaric and/or itaconic. The mono-alkenyl aromatic monomer may be styrene.  The open-chain conjugated diene may be butadiene.  The catalyst may be potassium persulphate.  The initial monomer increment may contain at least some of the alkenyl aromatic monomer and may contain 10-20% of each monomer.  Polymerization may be carried out at 50-80 DEG  C.  The acid monomer may be 1-3% of the total monomers and at least a part may be added to the polymerization mixture, e.g. when 80-95% of the non-acidic monomers have been polymerized, after all the other monomers.  The diene may be 9-56% of the total monomers.
Patent GB-1055829-A (GB)
Title: An improved shaping stand for the production of helically welded tubes
IPC: B21C37/12
Filed: 1964-11-26
Abstract: 1,055,829. Making helically wound tubes. SCHLOEMANN A.G. Nov. 26, 1964 [Dec. 27. 1963], No. 48065/64. Headings B3A and B3E. A shaping stand for the production of helically welded tubes is constructed as a gantrylike housing of which the guiding and centring unit consists of guiding rollers 8, 9, 10 arranged substantially uniformly within the housing. The rollers 9, 10 are arranged on cross-bars 6, 7 and the rollers 8 are arranged on a frame 5, both cross-bars and frame being guided and adjustable in height on upright members 2 (Figs. 1, 2, not shown). Threaded spindles 11, 12 adjust the heights of the cross-bars and frame and the pitch of the screw threads 19 is double that of the threads 18 to maintain the relative vertical spacing of the rollers. The rollers 8, 9, 10, 30 are manually adjustable by worm gears 24, 25, 26, 32 respectively.
Patent GB-1316390-A (GB)
Title: Carburettor for motor vehicles
IPC: F02M7/17
Filed: 1971-10-15
Abstract: 1316390 Spray carburetters DEUTSCHE VERGASER GmbH & CO K G 15 Oct 1971 [24 Oct 1970] 48074/71 Heading F1B A valve 46, controlling mixture flow into the induction passage 13 downstream of the throttle valve 31, is operated by a diaphragm 50 subject to the suction downstream of the throttle valve and provides for increased mixture flow with decreased suction in order to provide a substantially constant engine idling speed with variations in engine load. The diaphragm 50 is subjected to suction under the control of a valve 79 operated in accordance with engine speed by suction or a switch 94 which is closed below a predetermined engine speed exceeding the idling speed. The valve 79 includes a ball 84 which opens a suction connection 81 and closes an atmospheric pressure connection 82 when the solenoid 89 is energized to attract the armature 88. The connection 81 is connected to the passage 13 downstream of the region of movement of the valve 31 or connections 92 and 93 may be provided upstream and downstream of the valve. Mixture is supplied to the valve 46 through passages 44 and 45 connected to fuel and air sources through respective calibrated orifices 47 and 43 or mixture may be supplied through a passage 95 from the passage 13 between the air and throttle valves 14 and 31. The application of suction to the diaphragm 50 is through a non-return valve 61 and non-return bypass 64, 65, 66 such that a fall in induction passage suction is more rapidly effective than a rise. The mixture control valve (125), Fig. 2 (not shown), may comprise a valve plunger (115) spring urged away from its seat (137).
Patent GB-1218959-A (GB)
Title: Feed control for stuffer crimper
IPC: D02G1/12
Filed: 1968-10-11
Abstract: 1,218,959. Stuffer-box crimping. JOSEPH BANCROFT & SONS CO. 11 Oct., 1968 [11 Oct., 1967], No. 48250/68. Heading D1F. Apparatus for crimping yarn comprises a stuffer crimper having a crimping chamber 10, means feeding yarn 16 into one end of the crimping chamber to be crimped against the mass of previously crimped yarn in the chamber, means including a switch 49 having magnetically operated contacts for controlling the relative rates of feed and withdrawal of the yarn from the crimping chamber, means including a feeler 45 adapted to rest on a core of crimped yarn in the chamber to rise and fall therewith, and a magnet 50 mounted for movement with the feeler in a path to open and close the contacts of the switch 49 in response to movement of the magnet 50 which is arranged such that the magnetic force for actuating the contacts is applied in a direction transverse to the path of movement of the magnet, whereby any reactive force on the magnet is not transferred to the feeler means and does not affect the back pressure thereof on the core of crimped yarn. The chamber 10 is formed by tubes 10 and 10a extending through a sleeve 10b. The feed means comprises a pair of rollers 14, 15, the roller 14 rotating on a fixed axis 17 and the roller 15 being mounted in a bracket 30 movable relative to a pivoted bracket 32 to vary the bite spacing of the rollers and to adjust the parallelism of the rolls. The switch 49 energises a solenoid 25, the plunger 26 of which engages a disc 27 adjustably mounted on a pivoted link 22 to move the link against a spring 23 and reduce the tension on the driving belt 19 for the roller 14 to reduce the speed of that roller. In this way the level of the mass of crimped yarn in the chamber 10 falls and the contacts of the switch 49 are opened by the movement of the magnet 50. The speed of the roller 14 then returns to its initial speed.
Patent GB-1532230-A (GB)
Title: Treatment of chromated metal surfaces with sulphur-compounds
IPC: C23C22/82
Filed: 1975-11-24
Abstract: 1532230 Coating black chromated metal surfaces IMASA Ltd 8 Nov 1976 [24 Nov 1975] 48273/75 Heading B2E [Also in Division C7] Black chromate coated zinc or cadmium surfaces, e.g. Zn panels, zinc die castings or Cd plated panels are rendered resistant to corrosion by coating with aqueous solutions or dispersions of sulphur containing compounds selected from thiosulphates, thioglycolates and thiourea. The sodium salts of the first two are preferred.  Coating is preferably effected by dipping and the treated surfaces may be dried at up to 60C. Chromating may be effected by treatment with an aqueous solution of hexavalent chromium and silver.
Patent GB-1390727-A (GB)
Title: Transmissions with torque converter and hydrostatic drives
IPC: F16H47/00
Filed: 1973-10-18
Abstract: 1390727 Variable speed gear GENERAL MOTORS CORP 18 Oct 1973 [10 Nov 1972] 48597/73 Heading F2D An input shaft 14, driven by a reciprocating engine 12, drives an aligned output shaft 48 of a motor vehicle through a torque-combining three-element planet gear 40, having a single output ring gear 44, and two inputs, one a carrier 36 driven through a first path including an hydrodynamic torque converter 20 and releasable clutch 30, the other, a control sun 42, driven through a second path including a variable stroke hydrostatic pump 58 driving a similar motor 60. Initially the planet gear is locked by a clutch 68, the pump and motor 58, 60 are set at zero stroke by a servo control 86, and the torque converter 20 drives alone. On reaching coupling phase the engine is governed at 12 for constant speed and a change is made to split torque drive by releasing the planet lock-up clutch 68 and increasing the stroke of the pump 58 to drive the control sun 42 at the lock-up speed, this change being assisted by temporarily engaging a lock-up clutch 21 of the torque converter 20. The pump stroke is then gradually reduced to reduce sun speed and thus overdrive the output, increased overdrives being obtained by driving the sun reversely after stationing it. An all hydrostatic reverse is provided by braking the planet carrier at 70, releasing the torque-converter clutch 30, and driving the control sun 42 forwards through the pumpmotor unit.