baber/WOPTO huggingface dataset:
Patent GB-1248964-A (GB)
Title: An electric defrosting arrangement for rotating blade systems
Inventor: FLEURY GERARD
IPC: B64D15/12
Filed: 1968-11-22
Abstract: 1,248,964. De-icing aircraft. SUD-AVIATION, SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. 22 Nov., 1968 [6 Dec., 1967], No. 55556/68. Heading B7W. [Also in Divisions H2 and H3-H5] In an aircraft electric de-icing system each blade of a rotating aerofoil, e.g. in a helicopter, is provided with five heaters a-e (Fig. 4) connected at one end to a phase of a polyphase supply, the blades being arranged in two groups of three and the like heaters a, b, c, d or e of each group of blades are star-connected at the hub end by a closed conductor with a controlled rectifier (e.g. a thyristor) between each pair of consecutive resistances of the star, each group of rectifiers being cut-in serially by a stepping- switch. Each group of thyristors is contained in a trapezoidal segment 15 1 -15 10  of a ring 6 of the aerofoil hub (Fig. 1), an eleventh segment 17 containing switching circuitry. Current is supplied through a collector 3 and a number of control rings 5 which provide a connection between a control box 2 and the switching facilities 17. The heaters a to e on the blades have a greater dissipation capacity at the centre of the rotor than near the blade tip. When a timer in control box 2 is activated the heaters on each group of blades are energized in the order d, e, c, b, a for a predetermined period of time, e.g. a cycle of 10 to 30 seconds, the thyristor circuit ensuring correct cycling of the like heaters e.g. a of each star-connected group. After the heaters of one group of blades have been energized there is a predetermined gap before the heaters of the other group are energized. The cycle is then restarted. The rear rotor of a helicopter has a similar cyclic arrangement except that heating is continuous.
Patent GB-1135989-A (GB)
Title: Process for pre-heating raw stock in anhydrite sulphuric acid plant
Inventor: WEIHER ROLF
IPC: C01B17/50
Filed: 1966-12-13
Abstract: 1,135,989. Sulphur dioxide; sulphuric acid. FARBENFABRIK WOLFEN VEB. 13 Dec., 1966, No. 55730/66. Heading C1A. Raw stock in anhydrite sulphuric acid plant is preheated by passage along heated conveying devices through which flow hot combustion gases from a separately situated combustion plant for solid, liquid or gaseous fuels. "Raw stock " is a mixture of CaSO 4 , coke and clay. The fuel may be sulphur and/or sulphurcontaining materials and/or carbon-containing materials and the SO 2 -containing combustion gases may eventually be passed to the contact chambers of an anhydrite sulphuric acid plant. Fig. 1 (not shown) shows a plant in which the conveying devices are screw conveyors provided with double mantels, hollow shafts and hollow screw windings through which the hot combustion gases flow.
Patent GB-1412601-A (GB)
Title: Manufacture of steel files
IPC: C09D5/23
Filed: 1972-12-04
Abstract: 1412601 Heat treating seals USS ENGS & CONSULTANTS Inc 4 Dec 1972 [22 Dec 1971] 55811/72 Heading C7N [Also in Division B3] A method of making high carbon flat bar stock for steel files comprises hot rolling high-carbon steel into a slab, hot rolling the slab at a temperature within the range 1600-2200‹F, coiling the strip at a temperature above 1000‹F, furnaceannealing the coil at a temperature above the A 1  critical temperature for at least two hours in a reducing atmosphere, cooling the coil at a rate of about 20 to 40‹F per hour to a temperature of about 1250‹F to form spheroidized carbide precipitates, furnace-cooling the coil to a temperature below 400‹F, and slitting the uncoiled strip into bars having the width of the bar stock. The bars are then cut into file blanks. The annealing is preferably a box annealing within the range 1350‹ to 1380‹F with the dew point of the reducing atmosphere being adjusted, after the temperature has reached 1100‹ F, to 15. F. Prior to the slitting operation the strip may be given a light roll to eliminate coil set. The files may be produced by surface grinding the stock to remove the thin outer layer of pure iron and decarbonized steel and then cutting grooves or teeth. The files can then be rehardened by immersion in a molten lead bath at 1450‹F for 3 to 4 minutes followed by quenching in a saturated brine solution.
Patent GB-1287117-A (GB)
Title: Extrusion head for the production of tubular laminated films
IPC: B29C48/10
Filed: 1969-11-14
Abstract: 1287117 Extruding multi-layer tubes and films BARMAG BARMER MASCHINENFABRIK AG 14 Nov 1969 [14 Nov 1968] 55975/69 Headings B5A and B5B As shown in Figs. 1 and 2, an extrusion die 1 for producing tubular laminated blown fibres is provided with two concentric ducts of annular cross-section terminating in annular concentric extrusion orifices 2 and 3. The ducts communicate with concentric ducts of annular crosssection 4 and 5 respectively. The ducts 4 and 5 communicate with annular ducts 6 and 7 respectively which lie in planes normal to the extrusion axis of the die. Ducts 6 and 7 communicate through a number of radial ducts 8 and 9 with annular ducts 10 and 11 lying in planes normal to the extrusion axis of the die. Ducts 10 and 11 communicate through a number of radial ducts 12 and 13 with the ends 14 and 15 of the feed ducts 16 and 17. The feed duct 17 passes to the end 15 between a pair of the radial ducts 12 and the ends 15 and 14 of the feed ducts 16 and 17 respectively are situated substantially on the vertical axis of the extrusion die. In the embodiment shown in Fig. 3, the die 18 is rotatable about the extrusion axis while the part 19 of the extrusion head containing the feed ducts is stationary and rigidly mounted on the frame of the extrusion machine. The feed ducts 16 and 17 communicate with the concentric annular ducts 20 and 21 respectively, which lie in a plane normal to the extrusion axis. The ducts 20 and 21 are formed by concentric annular recesses machined in the opposing faces of the stationary part 19 and the rotatable part 18 of the extrusion head. A running gland 22 which may consist of polytetrafluoroethylene or of porous sintered bronze is advantageously provided between the opposing faces of the members 18 and 19. The concentric annular ducts 20 and 21 communicate through ducts 24 and 23 respectively with distribution centres 15 and 14 which communicate by means of radial ducts with two of the annular concentric extrusion orifices in the same manner as in the first embodiment of the extrusion die of the invention. A third component of the laminar film is in the second embodiment supplied to the third and outermost of the three concentric annular extrusion orifices through the central feed duct 25 lying in the axis of the extrusion die. Both embodiments of the extrusion die of the invention may be provided in the usual manner with heating sleeves 27.
Patent GB-1475510-A (GB)
Title: Cold chamber die-casting machine
IPC: B22D17/30
Filed: 1974-12-30
Abstract: 1475510 Pressure die-casting machines IDRA-PRESSEN GmbH 30 Dec 1974 [10 Jan 1974 11 Jan 1974 12 Jan 1974] 55978/74 Heading B3F In a die-casting machine the shot piston is subjected to multiphase operation by apparatus comprising a press piston 2, the piston-rod 3 of which is attached to the shot piston (not shown), and a hollow multiplier piston 10 having a hollow piston-rod 11. In operation, fluid introduced through a line 7 enters a chamber 6 (valve member 28 of a valve 27 is closed) and moves piston 2 to the left. At a predetermined point, a valve 32 is changed allowing fluid to pass along lines 31, 50 to a tank 34, whereupon the valve 27 and a valve 45 open, and hence fluid from a store 26 enters the chamber 6 to increase the speed of travel of the piston 2. Pressure build-up in chamber 6 (as a result of increased mould filling) actuates a valve 23 which connects a line 22 to a tank 25, and fluid in a chamber 12, which has prevented the multipler piston 10 from moving under pressure exerted by a high pressure store 16, escapes via a line 19 and through a valve 20 to a low pressure store 18, thus allowing movement of the piston 10, the rod 11 of which engages the piston 2 to increase further the speed of travel of piston 2.
Patent GB-1223020-A (GB)
Title: Method of preparing dye-bearing matrixes
IPC: G03G13/26
Filed: 1968-11-27
Abstract: 1,223,020. Printing apparatus. FUJI SHASHIN FILM K.K. 27 Nov., 1968 [1 Dec., 1967], No. 56363/68. Heading B6C. [Also in Division G2] A printing plate ready for printing is produced by forming an electrostatic latent image on the surface of a preferably hydrophobic insulating material, developing it with a dye-absorbing particulate toner, fixing the developed image and treating the image with an aqueous solution of a dye, so that the toner absorbs the dye. When a sheet of material to be printed on is placed in face-to-face contact with the plate, dye is transferred to it from the toner. When repeated printing exhausts the dye, the image may have more dye applied to it. Multiple printing plates, prepared by, for example, colour separation, may be used to make multicoloured prints from, for example, colour transparencies. The plate material may be a thermoplastics material, and have a photoconductive response throughout the visible spectrum and to infra-red radiation. A latent image may be formed on the plate electrophotographically or a charge pattern may be applied directly to the plate. A uniformly charged plate surface may be produced, prior to exposure to light, by means of a corona discharge. Developement may be by immersion of the plate in a suspension of a hydrophilic toner material, such as gelatine, casein, glue or albumen, in, for example, cyclohexane, or in an aliphatic hydrocarbon or a fluorchlorinated hydrocarbon. A development electrode may be employed, and may be a stainless steel container for the developer. Excess developer may be removed by washing with kerosene, and the toner be fixed by heat, by exposure to solvent vapour, or by application of a lacquer. An aqueous or aqueous-organic solution of a dye is then applied to the toner image and excess dye is washed out. Prior to being brought into contact with the plate, the material to be printed on may be dipped in an aqueous mordanting solution containing aluminium sulphate.
Patent GB-1365165-A (GB)
Title: Production of carbon fibres
IPC: D01F9/22
Filed: 1971-12-09
Abstract: 1365165 Carbon fibres KANEGAFUCHI BOSEKI KK 9 Dec 1971 [10 Dec 1970] 57294/71 Heading C1A [Also in Divisions B5 and C3] Carbon fibres are formed from fibres of an acrylonitrile polymer in which a portion of the nitrile groups have been converted to amidoxime groups, by heat treating the polymer fibres at a temperature of from 200‹ to 300‹ C. under an oxidizing atmosphere and then carbonizing the heat-treated fibres at a temperature of from 800‹ to 3000‹ C. under a non-oxidizing atmosphere. The polymer has a DO/DN ratio of from 3 to 30. The ratio is measured by the ratio of the absorbancy DO, of the amidoxime group at an absorption band of substantially 6 Á, to the absorbancy DN of the nitrile groups in the absorption band at 4À5 Á. The polymers aftertreated to introduce amidoxime groups may be polyacrylonitrile or a copolymer of at least 85% by weight of acrylonitrile and a vinyl or allyl monomer. A list of such monomers is given selected from the classes vinyl esters, esters of acrylic or methacrylic acid, or acid chlorides or amides of these acids, allyl vinyl or vinylidene halides and sulphonates. Exemplified polymers are polyacrylonitrile aftertreated with hydroxylamine and anhydrous sodium carbonate and copolymers of acrylonitrile and vinyl acetate or methyl acrylate similarly treated. The fibres may be in the form of filaments, tows, staple fibres and yarns, woven and non-woven fabrics and knitted goods. The heat-treatment and carbonization are carried out using conventional techniques.
Patent GB-1328918-A (GB)
Title: Isomerization of polymethylbenzenes
IPC: C10G35/00
Filed: 1971-12-13
Abstract: 1328918 Isomerizing polymethylbenzenes ESSO RESEARCH & ENG CO 13 Dec 1971 [16 Dec 1970] 57747/71 Heading C5E A mixture of polymethylbenzenes in other than equilibrium ratio is isomerized with a catalyst comprising molybdenum oxide supported on a crystalline aluminosilicate zeolite in its hydrogen form. The zeolite is or has the composition where x = 0.001-0.2, Y = 0-10 and M is one or more alkali metals. The feed may be a mixture of xylene isomers and ethylbenzene, and the isomerization may increase the p-xylene content of the stream, the p-xylene being separated by crystallization and distillation. The isomerization may be carried out in the vapour phase at 700-950 F. over a catalyst comprising MoO a  on offretite.
Patent GB-1141140-A (GB)
Title: Identification system for telephone or like exchanges
IPC: H04Q3/54
Filed: 1967-12-20
Abstract: 1,141,140. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORP. 20 Dec., 1967 [29 Dec., 1966], No. 57894/67. Heading H4K. A path tracing facility determines the identity of links in a path, traced back from a known junctor to an unknown line circuit, by taking a census of busy links at each stage of the network and comparing the results of that census with the results of a second census taken with the busy condition momentarily removed from the private wire at its termination in the junctor. If it is desired to establish the identity of an unknown junctor connected to a known line circuit, the private wire is monitored from the line circuit as the busy conditions applied from the junctors are sequentially and momentarily interrupted; detection of an interruption at the line circuit halting the sequential interference with the junctors at that junctor connected to the line circuit. Examination of the busy/idle condition of links may be made in a replica network otherwise employed for route finding, Fig. 2 (not shown).
Patent GB-1439779-A (GB)
Title: Hermetically sealed electrochemical cell
IPC: H01M50/178
Filed: 1973-12-14
Abstract: 1439779 Sealed cell casing VARTA BATTERIEAG 14 Dec 1973 [18 Dec 1972] 58100/73 Heading H1B An hermetically-sealed cell casing comprises a strip of insulating material wound several times around the cell element comprising the positive and negative electrodes and intervening separator, the strip being coated with adhesive and carrying at least two flexible terminal plates connected, respectively, to the positive and negative electrodes of the cell element, the ends of the casing being sealed by casting resin. Fig. 1 shows a cylindrical cell element 2 with terminal lugs 3, 4, the insulating adhesive strip 1 and terminal plates 5, 6 prior to winding the strip around the cell element. The strip 1 is wound commencing at the end 0 and finishing at the end 9, the lugs 3, 4 being welded to the plates 5, 6 at the locations 10, 11 during the winding process. Finally, the casing ends are sealed by casting resin 20, 21. The casting resin 20, 21 may be supported on insulating plates 24, 25 to form gas spaces 26, 27. The removal of heat from the cell may be improved by providing the inner turns of the strip 1 with holes 22. The strip 1 may be of PVC coated with adhesive. In modifications (Figs. 3-5, not shown) the cell element 2 has two pairs of terminal lugs and the strip 1 carries four terminal plates.
Patent GB-1269673-A (GB)
Title: Improved pump shaft sealing arrangement
Inventor: LIPE BRUCE R
IPC: F04D29/42
Filed: 1969-11-28
Abstract: 1,269,673. Rotary shaft seals. ALLISCHALMERS MFG. CO. 28 Nov., 1969 [10 Dec., 1968], No. 58367/69. Heading F2B. [Also in Division F1] A sealing arrangement for a rotary pump shaft 12 comprises a seal housing 8 removably connected to the pump casing 9 and forming an enclosed chamber 18 around the shaft, means within the housing for sealing the shaft thereto, and a pressurized lubricant contained with the chamber. The pump impeller 26 is driven by a motor 7 and the shaft is sealed where it extends through the housing 8 by seals 32 each comprising a seal element urged by springs 33 into rubbing sealing contact with a respective side of a flange 31 on the shaft. A lubricating liquid and then a pressurized gas is admitted to the chamber 18 through an opening 34 which is then closed by a plug 36. The pump casing 9 may be removed from the seal housing 8 and also, if required, the impeller may be removed from the shaft, without depressurizing the housing.
Patent GB-1110934-A (GB)
Title: Control mechanism for fuel injection device
Inventor: SKINNER ROBERT THOMAS JOHN
IPC: F02D1/00
Filed: 1964-04-09
Abstract: 1,110,934. Regulating I. C. engines. JOSEPH LUCAS (INDUSTRIES) Ltd. May 14, 1965 [April 9, 1964], No. 58401/67. Divided out of 1,110,933. Heading F1B. A fuel injection control mechanism comprises a bellows 42 responsive to inlet manifold pressure to move a first lever 46, Fig. 1, having a roller 47, along a first support block 48, a movable control lever 49 also engaging the roller 47 and carrying a roller 55 which engages a further support block 52, and control means connected to the control lever for moving it to vary the fuel delivery. An engine-driven distributer disc supplies fuel alternately to the opposite ends of bore 12 containing a shuttle 13, the movement of which is controlled by the position of plugs 14, 15. Control lever 49 adjusts the position of plug 15. The transmission ratio is varied by moving roller 55 along block 52 by means of link 57 and lever 58 which have manual or automatic actuation. Plunger 60 is retracted into recess 61 as control lever 49 is moved to permit plug 15 to move into housing 40 thereby increasing fuel supply. At the end of travel of roller 47 the slope of block 48 is sharply increased to reduce the fuel supply under decreasing manifold pressure e. g. under overrun conditions. The mechanism is also responsive to changes in atmospheric pressures which acts on the outer end of bellows 42 whilst manifold pressure acts on the inner end. In a modification a knob (64), Fig. 2 (not shown) changes the relative position of an arm in relation to the pressure responsive member to control the response of the mechanism to correspond to a predominating atmospheric pressure.
Patent GB-1214830-A (GB)
Title: Sheet processing machines
Inventor: NORTON ROBERT KIRKWOOD
IPC: B41F33/14
Filed: 1967-12-22
Abstract: 1,214,830. Rotary printing machines. HARRIS INTERTYPE CORP. 22 Dec., 1967 [28 Dec., 1966], No. 58500/67. Heading B6C. [Also in Division B8] In a rotary, offset, lithographic printing press where the sheet feeder and the delivery mechanism operate in timed relationship to the press, control means automatically interrupt the feed of sheets to the press during the period when an auxiliary stack support means is being interposed between the main stack support and the sheets delivered from the press. The throwing-on of each of the printing units (A, B and C, Fig. 1, not shown) is controlled in sequence as the leading sheet passes through the press. When the press is to be switched-off each of the units is thrown-off in sequence as the last sheet passes through, the speed of the press being maintained until the last unit is thrown off after which the press runs at "trip-slow" speed. A master trip is provided which enables all units to be thrownoff without delay and the feeder stopped. Trip mechanisms are provided for the inking rollers, the plate cylinders and the blanket cylinders of each printing unit each trip mechanism comprising a tripping cam and a cam follower which is positionable so that the cam throws the unit on or off depending upon the energization of one or the other of a pair of solenoids. Once a solenoid has been set the cam trips the unit at the correct time in the machine cycle. Detecting faulty feed.-In response to a failure to detect a sheet registered at the front stops a control device stops the feeder and throws-of the printing units in sequence as the last correctly fed sheet passes through the press. Insertion of auxiliary stack support.-In response to the operation of a control for interposing the auxiliary stack support the feeder is disabled for a predetermined number of feed cycles and the printing units are thrown off and then on again as the gap in the feed passes through the press, the interposition of the platen being effected "in the gap". When the press is set to operate in this manner the faulty feed detector is disabled.
Patent GB-1420797-A (GB)
Title: Mill roll
IPC: D21G1/02
Filed: 1973-12-19
Abstract: 1420797 Rollers PROCTER & GAMBLE CO 19 Dec 1973 [20 Dec 1972 (2)] 58763/73 Heading B3M [Also in Division F2] A mill roller is heated or cooled by conducting a heat transfer medium through the journals and circumferentially-spaced axially-extending passageways 42, there being means disposed within the passageways for increasing the heat transfer. Such means may include rods 31 and grooves 46 which impart turbulent flow. Each passageway may be fed through radial bores 40, an annulus 49 and a bush 30 which serves as a heat insulator. The end cover 22 may also be thermally isolated by gaskets 28, 29 and provided with sockets 50 for the rods 31. Turbulence in the passageways may also be created by ridges on the rods and the velocity varied by tapering the rods.
Patent GB-1219347-A (GB)
Title: An apparatus and method for etching a face of a glass plate preferably according to predetermined patterns
IPC: C03C15/00
Filed: 1968-12-11
Abstract: 1,219,347. Etching apparatus. L. BRESCIANI, and A. BRESCIANI, [trading as VITREAL SPECCHI DEI FRATELLI BRESCIANI]. 11 Dec., 1968 [11 Dec., 1967], No. 58893/68. Heading B6J. [Also in Division C1] Apparatus for etching a face of a glass plate comprises a work-table including an acidcontaining tank with means for clamping the plate and for rotating the table with respect to a stand so that the face to be etched directly contacts acid in the tank. Fig. 1 illustrates a support stand 1 for a pivotable work-table 2 comprising a frame 3 in which is mounted a tank 6 provided with an acid-resistant seal 7; the glass plate 9 is clamped to the edges of the tank by a retaining frame 8 provided with suitable resilient gaskets 8b and by locking members (not shown). In use, the table 2 is rotated to a horizontal position (Fig. 3, not shown), and acid is introduced through inlet (11) (Fig. 4, not shown); the acid is removed after a time through outlet (12), and water is circulated, after which the plate is returned to a vertical position for removal. Air and fumes are removed through a breather (15). By coating the plate with acid-resistant paint in certain areas, the etching may be slective.
Patent GB-1235178-A (GB)
Title: Methods of manufacturing semiconductor devices
IPC: H01L21/32
Filed: 1968-06-05
Abstract: 1,235,178. IGFETS. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 5 June, 1968 [8 June, 1967], No. 58941/70. Divided out of 1,235,177. Heading H1K. The subject matter of this application is included in Specification 1,235,177 from which it is divided but the claims relate to a method of making a silicon IGFET involving providing only on the part of a silicon body destined to form the channel a layer of diffusion masking material consisting for at least part of its thickness of a material, other than silicon oxide, capable of masking against oxidation, treating the masked body to form on the unmasked parts an inset oxide layer, removing parts of the oxide adjacent opposite edges of the masking to form apertures, and then diffusing impurity therein to form the source and drain regions and oxidizing to form inset oxide layers thereon. Specification 1,235,197 is referred to.