baber/WOPTO huggingface dataset:
Patent GB-1227987-A (GB)
IPC: G03G15/02
Filed: 1968-06-04
Abstract: 1,227,987. Corona charging devices. RANK XEROX Ltd. June 4, 1968 [June 5, 1967], No. 26519/68. Heading G2H. In a corona charging apparatus, accumulated stray toner particles are removed from the corona wire 105 Fig. 2, by passing a current through the wire from the secondary winding 128 of a transformer 130, the primary winding 132 being energized by logical circuitry 150 which is programmed to operate, after a given number of reproduction cycles of the xerographic apparatus Fig. 1 (not shown) in which the corona charger is included, or during the warm up period of the xerographic machine. Double pole switches 122, 124 switch the corona wire between the current generating cleaning means 150 and the high voltage corona source 31. In another embodiment Figs. 5, 6 (not shown) wires (173) are connected in parallel at the lip portions of the side walls (172) of the corona generator housing, and a current passed through these wires removes accumulated dust from the housing. The corona charger may be employed to apply an initial sensitizing charge to a xerographic drum 19, Fig. 1 (not shown), or at a transfer station (53) or, if of opposite polarity to the initial charge, may be used to clean the drum after transfer of the developed image.
Patent GB-1229133-A (GB)
IPC: C07C51/48
Filed: 1969-09-26
Abstract: 1,229,133. Purifying terephthalic acid. E. I. DU PONT DE NEMOURS & CO. 26 Sept., 1969 [3 Oct., 1963], No. 47500/69. Heading C2C. A process for purifying crude terephthalic acid comprises the step of washing the crude acid with aqueous acetone containing at least 50% by weight of water at a temperature of 225‹ to 275‹ C.
Patent GB-1229530-A (GB)
IPC: H01G4/01
Filed: 1969-12-01
Abstract: 1,229,530. Capacitors. SPRAGUE ELECTRIC CO. 1 Dec., 1969 [24 Dec., 1968], No. 58595/69. Heading H1M. A stacked capacitor comprises rhombic electrodes separated by spacers 16, alternate electrodes 14 being rotated about their longitudinal or transverse axes through 180 degrees from electrodes 12, the triangular extending portions of different polarity being laterally spaced from each other at each of two sides. Alternatively each electrode may be a trapezium (Fig. 3, not shown) and triangular extending portions of electrodes of the same polarity are at corresponding corners instead of alternate corners. The extensions are crushed together and leads welded or riveted thereto. The capacitor may be an aluminium or tantalum polar or non-polar liquid electrolytic capacitor.
Patent GB-1231231-A (GB)
IPC: C08J7/02
Filed: 1968-09-05
Abstract: 1,231,231. Splicing record tapes. AGFAGEVAERT A.G. 5 Sept., 1968 [7 Sept., 1967], No. 42279/68. Heading G5R. [Also in Division G2] A method of splicing two polyester strips or a polyester strip to a cellulose acetate strip, comprises applying an oxime as a swelling agent to one or both ends to be joined and heating them under pressure to a temperature of up to 200 C. Suitable oximes are those of aldehydes or ketones containing benzene or naphthalene nucleii. Additional swelling agents such as mono- or polyhydricphenols may be applied. The agents may be diluted by solvents. Suitable apparatus comprises holders 1 for polyester strips 4 having image layers 3, and a metal die 2 for applying pressure.
Patent GB-1232426-A (GB)
IPC: C10M177/00
Filed: 1968-07-19
Abstract: 1,232,426. Electro-deposition of iron. ESSO RESEARCH & ENG. CO. July 19, 1968 [Aug.4, 1967], No.34614/68. Heading C7B. [Also in Division F2] High strength metallic alloy gears, cams or bearing surfaces, are coated with a thin coating, e.g. between 0À01 inch to 0À0001 inch, of metallic iron to render the surfaces more amenable chemically to the lubricants having extreme pressure additives. The coating may be applied by known methods of vacuum coating, gas plating, or electro-plating. One such method uses the gear etc. as the cathode with a metallic iron or steel anode, the electrolyte being 300 grms/litre of ferrous chloride and 335 grms/litre of calcium chloride maintained at a temperature between 90 and 110‹ C., with a cathode current density between 100-180 amps/sq. ft. Again, 350 grms/litre of ferrous ammonium sulphate in 0À25 grms/litre of sulphonic acid may be used with a cathode density between 20 and 30 amps./sq. ft. at a temperature between 20‹ -30‹C. Examples of alloys for the gears etc. are given, e.g. stainless steel, nickel-, cobalt-, chromium-based alloys, as is a list of conventional extreme pressure additives.
Patent GB-1234120-A (GB)
IPC: C10G65/10
Filed: 1969-07-30
Abstract: 1,234,120. Producing lubricating oil by hydrocracking. CHEVRON RESEARCH CO. 30 July, 1969 [31 July, 1968], No. 38353/69. Heading C5E. Lubricating oil is obtained from a two-stage hydrocracking in which (i) a hydrocarbon oil boiling in the range 800-1200‹ F., and containing less than 5% by wt. asphaltenes is at least 20% converted in a first hydrocracking zone at 700-850‹ F. to form materials boiling below the initial boiling point of the feed, and a hydrocarbon wax boiling in the range 750-1100‹ F., which is separated, and (ii) at least a portion of said wax is hydrocracked in a second zone at 650-830‹ F. together with a second hydrocarbon oil boiling in the range 700-1100‹ F., containing less than 5% by wt. asphaltenes and having an average boiling point no higher than that of the first oil feed, to convert at least 20% of said wax and oil feed to materials boiling below the feed boiling range, and at least one light neutral oil of viscosity index above 110 is recovered from the second zone effluent. The catalyst in each zone comprises Group VI and Group VIII metal components in association with a refractory oxide, specifically oxides or sulphides of Mo or W with those of the iron group, noble metals, Co, Ni, Pt or Pd, and cogels or coprecipitates of SiO 2  with Al 2 O 3 , MgO, ZrO 2 , TiO 2  or B 2 O 3 . The first oil teed may, be a straight-run gas oil or a deasphalted oil, optionally desulphurized or denitrified, and the second oil feed may also be a straight-run gas oil. The effluent from either or both zones may be U.V.-stabilized by solvent extraction with phenol or furfural.
Patent GB-1238772-A (GB)
IPC: G09B17/00
Filed: 1969-02-28
Abstract: 1,238,772. Card games. T. KREMER and J. R. HICKS. 26 May, 1970 [28 Feb., 1969], No. 10788/69. Heading A6H. [Also in Division G5] A pack of cards for use in teaching, reading or playing a game comprises a plurality of sets of cards, each card of a set carrying a word 9 and an illustration 8 to identify the card from all others of the set and illustrations and/or words 10 serving to identify the other cards of the set.
Patent GB-1251686-A (GB)
IPC: F16J15/16
Filed: 1968-12-06
Abstract: 1,251,686. Seals. SVENSKA PRECISIONS-VERKTYG A.B. 6 Dec., 1968 [11 Dec., 1967], No. 58048/68. Heading F2B.  A pump for liquids containing solid particles comprises a main first packing 50 which is surrounded by an oil chamber 48, a second packing 78 of elastomeric material which is connected to the pump housing and co-operates with a rotary surface to provide a space 86 between the two packings, and a slot 74 provided between the impeller 18 and the pump housing, the second packing having an annular surface 80 under axial pressure and an annular undercut lip which in operation permits communication between the slot and the said space so that the pressure on the forward side of the main packing is reduced to effect lubrication of the main packing. The main packing 50 consists of a stationary ring 52 engaged by a rotary twoelement ring 54 carried by an elastomeric sleeve 56 and a rigid spring-urged retainer 58. The second packing 78 may be connected to, or formed integrally with, a rubber protective facing 62 which is reinforced by a member 66 and secured to the pump cover 26 by means of screws 72 and a snap-on flange 70. During rotation of the impeller 18, a reduced pressure is created in the slot 74 causing the sealing lip to open to evacuate the space 86 and thereby effect lubrication of the main packing 50 with oil from the chamber 48. When the pump stops, the reduced pressure in the space 86 is retained by the sealing lip which is pressed into sealing contact by the higher pressure in the slot 74.
Patent GB-1252359-A (GB)
IPC: B29C45/68
Filed: 1969-11-20
Abstract: 1,252,359. Casting machines. V. H. MUTTART. 20 Nov., 1969 [5 Dec., 1968], No. 56949/69. Heading B3F. [Also in Division B5] A die-casting machine is provided with platenclosing mechanism comprising two pairs of toggle linkages 18, 27 connected between a movable platen 5 and a reciprocating piston 15, each toggle joint including a roller 37 which co-operates with an inclined wedge surface 44 so as to impart a clamping action to the platen during movement of the toggle joints. The wedge surfaces 44 terminate in a curved seating 41 the radius of curvature of which is equal to that of the rollers 37. Linear motion of the piston 15 and its rod 16 is ensured by guide means comprising rollers 31 carried by a member 30 connected to piston-rod 16. Alternatively a pin 29 pivotally connecting member 30 to toggle links 27 may be extended axially at both ends so as to engage in guide grooves (50) in base platen 2 (Fig. 4, not shown).
Patent GB-1257675-A (GB)
IPC: F23Q3/00
Filed: 1969-02-13
Abstract: 1,257,675. Igniting burners. BAKER PERKINS Ltd. 13 Feb., 1969 [14 March, 1968], No. 7817/69. Heading F4F. A rod 23 having a spark ignition flag electrode 24 is fixed in a casing 21 rotatably mounted in a cover plate 17 of a burner box 15 in an oven wall W, adjacent a tubular burner B having a longitudinally extending burner port, Fig. 5, (not shown), and a handle 26 on the end of casing 21 remote from the electrode is used to move the rod manually between a first limiting position wherein the charge transmitting edge 24a of the flag is separated from the burner port, and a second limiting position in which the edge 24 touches the burner port and scrapes graphite deposits from the ribbons or grill forming the port. The end 26c of the handle 26 moves freely along the shank of a bolt (31) threaded in an angle member 28 secured to the plate 17, against the action of a spring (33) and between a washer adjacent the bolt head and the member 28, thus defining the first and second limiting positions respectively. With the electrical power turned on, the electrode is brought into contact with the burner port to give a short circuit, and subsequent release of arm 26 causes it to return rapidly to its first position and give a spark between the electrode and burner port. The electrode assembly is removable from the oven by disconnecting member 28 from plate 17 and disengaging casing 21 from the open end of a yoke Y secured on the burner case 10 and normally holding the electrode assembly in position. A peep hole 35, 36, 37, is provided.
Patent GB-1258607-A (GB)
IPC: A47B3/083
Filed: 1969-10-10
Abstract: 1,258,607. Hinges for folding tables. F. BREMSHEY, W. FULLING and H. BREMSHEY [trading as BREMSHEY & CO]. 10 Oct., 1969 [10 Oct., 1968; 14 Jan., 1969], No. 49763/69. Heading E2F. [Also in Division A4] Each of at least two vertically spaced table tops is pivoted at its ends on bars such as 3, and comprises two halves 5 (6) foldable relative to one another about an axis 9 parallel to bar 3. Each half has a pair of spaced apart end walls 5f, 5a, Fig. 4, which engage around bar 3, the half being retained by a strip 14 having ribs 14a received in grooves 15 in walls 5f, 5a. The folding axis 9 is defined by a pin 9 passing through aligned alternate sleeves 5c, 6c, Fig. 5, of the halves 5, (6).
Patent GB-1259113-A (GB)
IPC: C10L1/18
Filed: 1968-04-11
Abstract: 1,259,113. Liquid fuel compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd. 28 March, 1969 [11 April, 1968; 20 Dec., 1968], Nos. 17544/68 and 60720/68. Heading C5G. The tendency of hydrocarbon fuels of flash point at least 90‹ F. and suitable for aircraft gasturbines to particulate dissemination on shock is reduced by the presence, in solution, of a polymer of viscosity average molecular weight greater than 10<SP>6</SP> or of intrinsic viscosity greater than 2À5 dls./gm. in a concentration such that there is molecular overlap of the polymer molecules in the liquid. Suitable polymers are polyisobutylenes, ethylene/propylene copolymers, polybutadiene, polyisoprene, polystyrene, polyalkylstyrene, and those derived from vinyl isobutyl ether, vinyl octyl ether, 2 ethylhexyl acrylate, octyl, cetyl and lauryl methacrylates, vinyl stearate and vinyl octoate. The polymers used have molecular weights of 10<SP>6</SP>-10<SP>7</SP> and intrinsic viscosities of 4À25-10À4 and are used in amounts of 0À01-2 wt. per cent. The fuels also contain (a) 8À6-24mg./litre of antioxidants which are N,N<SP>1</SP> dialkyl para-phenylenediamines, mixtures of N,N<SP>1</SP> dialkyl ortho- and para-phenylenediamines, 2,4,6-trialkyl-and 2,6-dialkyl-phenols and mixtures of these phenols with monoalkyl phenols; (b) not more than 5À8 mg. litre of N,N<SP>1</SP> disalicylidene-1,2 propane diamine as a metal deactivator; and (c) 0-10 to 0À15 volume per cent of ethylene glycol monomethyl ether which can be mixed with glycerol as an icing inhibitor.
Patent GB-1259441-A (GB)
IPC: H05B7/18
Filed: 1970-01-06
Abstract: 1,259,441. Continuous casting; casting processes. VSESOJUZNY NAUGHNO-ISSLEDOVATELSKY INSTITUT ELEKTROTERMICHESKOGO OBORUDOVANIA. 6 Jan., 1970, No. 610/70. Heading B3F. [Also in Divisions H3-H5] In apparatus for arc-remelting of a consumable electrode of highly reactive metal such as titanium under vacuum or in an inert-gas atmosphere, wherein the arc is struck between the electrode 6 and a cooled hearth 2 having an aperture 10 allowing the molten metal to pass to a cooled ingot mould 3, the hearth 2 has an annular depression 11 around the aperture 10 for .retaining a layer of molten metal which protects the hearth from the action of the arc. A conventional mechanism 8 for withdrawing the ingot 9 is provided below the cooling chamber 4, and a mechanism 7 allows for movement of the electrode 6 and its holder 5. Cooling water flows through ducts 12 in the hearth 2.
Patent GB-1264643-A (GB)
IPC: C09B1/60
Filed: 1969-06-26
Abstract: 1,264,643. Anthraquinone dyestuffs. FARBENFABRIKEN BAYER A.G. 26 June, 1969 [29 June, 1968 (2)], No. 32381/69. Heading C4P. The invention comprises dyestuffs of the formulµ wherein X is an alkylene radical which may be substituted by -OH, Y is H, Cl, Br or a group -S-X-OH, R and R 1  are optionally substituted alkyl or cycloalkyl radicals; R 2  and R 3  are hydrogen or a substituent and n and m are 0 to 3. They are prepared by (a) reacting the corresponding mono- or di-halogeno-1,4- diamino anthraquinone with a compound H-S-X-OH preferably in an organic solvent in presence of an acid binding agent, the product being optionally subsequently chlorinated or brominated; (b) reducing a compound of the general formula to form the dihydro compound where X is as above and Y 1  is H, halogen or HO-X-S- and then replacing the hydroxyl groups by alkyl- and/or cycloalkyl-amino groups or (c) reacting a compound of general formula wherein Z<SP>1</SP> is Cl or Br and p is 1 or 2 with a thiol HS-X-OH, where X is as above and then with at least 2 mol. of an amine R 2 NH 2  or R 3 NH 2  where R 2  and R 3  are as above. The dyestuffs give greenish blue and blue dyeings on synthetic polyamides.
Patent GB-1266967-A (GB)
IPC: D21F2/00
Filed: 1969-05-14
Abstract: 1,266,967. Papermaking apparatus. BELOIT CORP. 14 May, 1969 [23 May, 1968], No. 24657/69. Heading D2A.  A web pickup arrangement comprises a forming wire, for receiving stock to form a web, arranged to travel over a couch roll and then down an inclined run 11a; a looped pickup belt 14; a suctionpickup roll 15 within the loop, urging the pickup belt into contact with the forming wire at a pickup point; a looped press felt 30 having a substantially horizontal top run 30a; a guide roll 31a within the loop and mounted just beneath the pickup belt so that the belt and felt travel together without being pressed together to receive the web at a transfer point, the web and the belt travelling directly between the pickup point and the transfer point without additional support, and without passing through a press nip, the belt being turned directly off the inclined wire run at the pickup point and carried onto the substantially horizontal top felt run at the transfer point by the belt, and a first press nip receiving the press felt with the web, the pickup belt leaving the press felt prior to the press nip. The pickup roll preferably has a suction area extending from the pickup point to the transfer point. One of the press rolls, preferably at the bottom, may be grooved, and has a suction gland. The suction pickup roll may be swingably mounted on front and back framing means to move the pickup roll away from the pickup point, towards the interior of the felt loop to facilitate pickup belt change. This belt may be a wire-cloth or a felt. The framing may also swingably mount the guide roll for the press felt loop. When the pickup roll is removed, the machine may be operated without this roll, the web passing over an open draw, possibly with the aid of a small roll.
Patent GB-1267133-A (GB)
IPC: G11B15/675
Filed: 1970-05-28
Abstract: 1,267,133. Loading and ejecting cassettes. SONY CORP. 28 May, 1970 [29 May, 1969], No. 25831/70. Heading G5R. A cassette loading and ejecting arrangement includes three springs 50, 44 and 34 which respectively are used to lower the cassette holder, raise the cassette holder, and eject the cassette. On partially sliding a cassette C into the holder 25 a cam arm 31 rotates, a main slide 39 is moved by intermediaries towards the left, and the roller 37 of a pivoted bell-crank lever 27 rides on a first surface 36a of the cam 31 and maintains the orientation of the lever; springs 50, 44 and 34 are thereby all loaded. Further insertion of the cassette however causes the roller 37 to transfer to a second surface 36b of the cam 31, whereupon the spring 50 causes the lever 27 to pivot and so lower the cassette holder 25 to the operative position. For ejection, a plunger (76, Fig. 4, not shown) is operable to activate intermediaries to release the tension in spring 44 and so move the slide 39 back to its former position. The movement causes a bracket 47 to bear against a projection 27c of the lever 27 and the consequent rotation of the lever causes the cassette holder to be elevated, whereupon the roller 37 transfers back to cam surface 36a and the tension of spring 34 is released to eject the cassette from the holder. The lowering of the cassette holder to the operative position activates means to bring a carriage (116, Fig. 1, not shown), on which a head (122), tape guide (123), and pinch roller (124) are mounted, into an operative position relative to the cassette. Various locating, locking and latching arrangements are described.
Patent GB-1288154-A (GB)
IPC: H05B37/02
Filed: 1970-03-20
Abstract: 1288154 Programmed control of lighting THORN ELECTRICAL INDUSTRIES Ltd 19 April 1971 [20 March 1970] 13738/70 Heading G3N [Also in Division H3] A square loop core is read by a pulse of insufficient magnitude to switch the core from one storage state to the other. The core is operated between a saturated state O, Fig.1, and a state 1b which is of opposite magnetisation but which is preferably below saturation as shown. To write into the O state, a negative going pulse is used, while to write into the state 1b a positive pulse terminated by a small negative pulse is used. To read, a small negative pulse is used, which does not switch the core to state O. Reading is thus non-destructive. Because of the slope of the magnetisation curve at 1 b, the sensed output signals are approximately proportional to the magnitude of the read pulse for a range of read pulse values. Lighting control:- Fig.2 shows a core matrix used to control a sequence of lighting patterns for three theatre lights. During writing, a switch 52 controls which of the three rows is written into, while switch 54 control which of the columns is written into. Auxilary cores 11 always receive a write O current, and are used in subsequent reading to cancel the small spurious output which occurs when a O is read, thus simplifying discrimination between O and 1. Suppose the cores of the first column are set in states 1, 0, 1; this will illuminate lights 1 and 3 during reading but not light 2. The other columns may be set into differing patterns, so that the light illumination depends on which column is being read. To read the cores, read source 18 is activated to give a train of pulses, and switches 26 and 27 are set to supply the pulses to columns 1 and 2. Rheostat 20 is set to provide maximum current to column 1 and minimum current to column 2. Hence the sense amplifiers receive signals dependant on the state of the column 1 cores, and drive the lights in known manner. If the rheostat is moved to the other extreme, the light pattern is determined by the cores of column 2. Cross finding between the two columns is thus achieved. Switches 26 and 27 may be set to allow cross fading between any two columns. In another embodiment each core in the three columns is replaced by five cores; Fig.3 shows the resulting five columns which replace column 1 in Fig.2. The five columns receive read currents through resistors 60 1  = 60 5  in the ratio of 1:¢:“:#:1/16, and since the sensed outputs are proportional to the read current any one of 32 different sensed outputs may be obtained depending on the state of the cores in a row. For example, if cores 10 1 -10 5  are in states 1,0,0,0,1 the seventeenth sensed output would be obtained. Thus the brightness of each light may be controlled over 32 discrete values.
Patent GB-1288856-A (GB)
IPC: F16H9/24
Filed: 1970-11-09
Abstract: 1288856 Expanding pulley gear; chains J BAUER 9 Nov 1970 [22 Nov 1969] 53171/70 Headings F2D and F2Q In an expanding pulley gear in which two pairs of toothed conical sprocket flanges 6, 17 of an infinitely variable gear system are connected by a positive drive chain 22, the flanges 6, 17 having toothed projections and depressions engaged by chain slat pins 3 which move tranvsersely to U- shaped chain links 1 which carry them, each chain link 1 carries a pair of slat pins 3 arranged in transverse bores in the parallel legs 4 of each U-shaped link 1 in which each leg has a bore 20 closely fitting the end of one pin 3 and has an enlarged bore 5 loosely locating the end of the other pin 3 of the pair, the lower (i.e. radially inner with respect to the sprocket flanges) surface of the closely fitting bore 20 in one leg being coaxially aligned with the lower surface of the enlarged bore 5 in the other leg whereby each pin 3 is located adjacent its ends in a pair of close and loosely fitting bores 20, 5 such that it may freely slide along the aligned inner surfaces of the bores for correct meshing engagement in the pulley flanges, after which any biasing movement of the loosely mounted end of each pin 3 out of the axis of the aligned surfaces tends to jam i.e. self-lock the pin in its drive operating position. Each pin 3 may be slotted at 8 for engagement with guide rails 9 to bring the pins into correct running-in position between the pairs of toothed conical flanges 6, 17 the guide rails 9 being suitably adjusted at 10, 12 during ratio change. Alternatively, in Figs. 7 and 8 (not shown), each pair of slat pins 3 is biased to its correct location by a common spring (13) mounted in recesses in the pins 3, pegs (15) correctly locating the outward position of the pins 3. The pins 3 have flats at their opposing sides, an amount of play being left between the flattened sides of each pair of pins so that they may also slightly turn during transverse displacement to match the toothed flanks of the conical flanges 6, 17.