baber/WOPTO huggingface dataset:
Patent GB-893470-A (GB)
Title: Film extrusion nozzle
IPC: B29C48/08
Filed: 1960-08-03
Abstract: <PICT:0893470/IV (a)/1> <PICT:0893470/IV (a)/2> <PICT:0893470/IV (a)/3> <PICT:0893470/IV (a)/4> A film having beads along its opposite longitudinal edges, each bead having a cross section whose width, in the direction at right angles to the plane of the film, is greater than the thickness of the film, is made by shaping a flowable film-forming material into two independent streams of desired cross-section, concomitantly and independently shaping the material into a web of uniform thickness throughout its width and of less thickness than the shaped streams, arranging the streams and the web so that the streams are laterally spaced from one-another and the web extends between and is spaced from the shaped streams, engaging the streams with the longitudinal edges of the web while the material of both the streams and the web is in a flowable condition, and setting same, for instance by cooling, in their engaged positions to form a unitary structure.  As shown in Fig. 1, a single stream of a molten polymer, such as polyethylene, is delivered through a supply conduit 23 into an elongated housing 15 and is separated into three independent streams which move respectively into the extrusion orifice 31 (Fig. 3) and the end block channels 43 (Figs. 1 and 2). In passing through the extrusion orifice 31, the melt is shaped by the co-operating blades 17 (Figs. 1 and 3) into a web 49 of uniform thickness along its width.  The streams of melt forced outwardly from the ends of the feed chamber 27, however, are shaped by the walls of the channels 43 in the end block 21 into continuous beads 51, each thicker than the film web 49.  The outlets 44 of the channels 43 are aligned longitudinally with the orifice 31 so that the beads 51 engage with the adjacent edges of the web 49 immediately as they move beyond the feathered edges 48 (Fig. 5) of the plates 19 (Fig. 1, 2 and 5).  Setting of the film beads and web into an integral structure is effected by cooling them, as by a blast of cold air or a tank of cold water, outwardly of the nozzle.  The blades 17 are held in place on the housing 15 by bolts 35 and can be adjusted towards and away from each other by tension screws 36 and nuts 37.  A screw 46 extends through each of the end blocks 21 for regulating the flow of melt into the channels 43.  Films produced as described above are of uniform thickness across their entire width right up to their beaded edges.
Patent GB-442036-A (GB)
Title: Improvements in or relating to coal washers
IPC: B03B5/24
Filed: 1934-09-19
Abstract: 442,036. Coal-cleaning plant. INTERNATIONAL COMBUSTION, Ltd., and DAVIDSON, G. W., Aldwych House, Aldwych, London. Sept. 19, 1934, No. 26939. [Classes 82 (ii) and 117] The discharge of shale in coal-cleaning plants in which water or air is caused to pulsate through the material fed to the washer box or cleaning table and in which the shale discharge gate or door is connected to a float resting on the shale bed is controlled by mechanism comprising continuously oscillating pawls associated with ratchet means connected to the discharge gate, and guard members which are also oscillated and hold the pawls out of engagement with the ratchet means as long as the shale bed is of the desired thickness. The pawls and guard members are separately driven and their relative position is determined by the position of the float so that a change in the thickness of the shale bed results in relative movement between them and permits one of the pawls to engage the ratchet means to effect movement of the discharge gate in one direction or the other. The Figures show a Baum washer in which a shale discharge gate is provided at each end of the box, each gate being connected by a rope 25 to a drum 24 on a shaft 23. At each end a float 8 rests on the shale bed, suspended from levers 9a, 9b rotatably mounted on a shaft 10 and provided with counterweights 10a 10b. Ratchet wheels 11a, 11b are fixed on the shaft 10 and between the wheels a lever 12 carrying pawls 19a, 19b is rotatably mounted on the shaft. The lever 12 is oscillated by an eccentric 17 mounted on a shaft 18 from which the air valves of the washer are driven. The levers 9a, 9b carry guard members 20a, 20b and the oscillation of the lever 12 is arranged to synchronize with that of the levers 9a, 9b due to the pulsation of the water so that the guard members keep the pawls out of engagement with the ratchet wheels when the level of the shale bed is normal. If the level of the shale bed alters the relative position of the guard members and the pawls is changed and one of the pawls comes into engagement with one of the ratchet wheels and operates the discharge gate through a worm 21 on the shaft 10 and a wheel 22 on the shaft 23. If desired the wheels 11a, 11b may be combined into a single wheel, the arrangement of the levers carrying the pawls and guard plates being modified accordingly..
Patent GB-1482387-A (GB)
Title: Process for sheet converting in a platen press and a press for carrying out the process
IPC: B31B50/20
Filed: 1975-06-25
Abstract: 1482387 Sheet handling J BOBST & FILS SA 25 June 1975 [16 July 1974] 26971/75 Heading B8R A sheet converting press comprises a feeding station producing an intermittently fed shingled stream 3 of sheets the first of which is centred and aligned by adjustable stops in device 5 and then fed between plates 7 and 8 so that its rear edge is adjacent the front edge of the next sheet 9. Sheets 6 and 9 are then connected by a thermo-adhesive strip 36, cut and pressed into position by a heated piston, the joined sheets then being die-cut and the waste stripped away in station 11. Further sheets are joined thus forming a web which proceeds to a cam-operated cross-cutter 14 which separates the web into sheets which are fed through unit 15 to grippers on chain 17 which deposit the sheets on a stack in delivery station 18. The front stop in device 5 is moved into and out of position with each sheet by a lever following a rotating cam and lateral alignment is achieved using rollers which urge the sheet against a fixed stop.
Patent GB-1513797-A (GB)
Title: Method of and apparatus for producing a stretched film comprising a thermoplastic material
IPC: B29C48/21
Filed: 1975-06-27
Abstract: 1513797 Stretched films HOECHST AG 27 June 1975 [29 June 1974] 27299/75 Headings B5N and B5B Two or more stretched films are produced by extruding a melt of a thermoplastic material, e.g. polyester or polypropylene, through a slot die, longitudinally dividing the thermoplastic material to form two or more films, superposing at least two of the films and stretching them transversely. The melt may be longitudinally divided in the die lip during extrusion or the cooled film may be divided using knives, inductively heated dividing devices or laser devices. The films may have a thickness of 2-100 Á. The transverse stretching may be preceded by longitudinal stretching which may be effected while the films are parallel to adjacent each other before superposing them. Heat-setting may be effected after transverse stretching and the films then cut to suitable widths. In Fig. 1 melt leaving extruder 1 through slot die 2 is divided into two streams 4, 4<SP>1</SP> by dividing wedge 18 and the melt streams after solidification on cooling roller 3 are passed over roller 20 to a longitudinal stretching device comprising rollers 5a to 5f driven at different speeds. The films are superposed in device 12 in which film 4 is guided over rollers 8 and 11 supported by bearings 13 and 15 and film 4<SP>1</SP> is deviated over rollers 9 and 10 supported by bearings 14 and 16. The superimposed films are guided over collecting roller 11<SP>1</SP> and clamped by clips 17 and 17<SP>1</SP> and stretched by the transverse stretching frame having heating chamber 19. The film web may be separated and longitudinally stretched and then wound separately, or simultaneously wound or directly subjected to further treatment, e.g. coating or printing.
Patent GB-767286-A (GB)
Title: Improvements in or relating to low-reflectance colour filters
IPC: G02B1/115
Filed: 1952-10-30
Abstract: 767,286. Colour filters. HEIDECKE, R., [trading as FRANKE & HEIDECKE.]. Oct. 30, 1952 [Dec. 8, 1951], No. 27301/52. Drawings to Specification. Class 97(1) A low-reflectance colour filter for photographic purposes comprises a light-transmitting element forming a colour filter and provided on one surface with two superimposed light-transmitting layers the inner and outer layers having a refractive index respectively higher and lower than that of the said element and the thickness of the layers being respectively substantially equal to S#/64n 1 , and S#/16n 2 , where n 1  and n 2  are the refractive indices of the materials forming the layers and # the wavelength corresponding approximately to the centre of the spectral range transmitted by the light-transmitting element, the coated filer giving a reflectance curve with low reflectance (relatively to that of the uncoated element) at the margins of transmission range and substantially zero reflectance at a point between the said margins. The inner layer may be of tantalum oxide and the outer layer of magnesium fluoride.
Patent GB-733442-A (GB)
Title: Improvements in milking machine installations
IPC: A01J7/00
Filed: 1952-10-30
Abstract: 733,442. Cow-milkers. FULLWOOD & BLAND, Ltd., R. J., and SKETT, H. E. Feb. 24, 1953 [Oct. 30, 1952], No. 27352/52. Class 84. A cow-milking installation comprises an overhead runway system having a main runway 1 and branch runways 2, the former extending down and behind the row of cows and the latter being above the spaces between cows. The milking cluster and milk receiver forming a unit 4 is carried by a carrier running on the runways and by means of turntables or other devices on the runways the carrier can be moved to any position on the rails. More than one milking unit 4 can be used. The outer ends of branch runways 2 can be supported on the vacuum pipe lines of the system. If desired branches 2 can be provided on both sides of the main runway to deal with a double row of cows.
Patent GB-444636-A (GB)
Title: Improvements in or relating to the stabilisation of chlorinated rubber
IPC: C08C19/14
Filed: 1934-09-24
Abstract: Chlorinated rubber of improved stability is produced by treating it, in solution in a volatile organic solvent, with an aqueous solution of an antichlor, i.e. a substance, such as alkali metal and ammonium bisulphite, sulphite and thiosulphate, which reacts with free chlorine or oxidizing chlorine compounds such as hypochlorites. Advantageously, a solution of rubber in carbon tetrachloride is chlorinated beyond the point at which chlorine is absorbed readily, an emulsion of this solution and an aqueous solution of the antichlor is made and the solid chlorinated rubber separated by precipitation with alcohol or evaporation of the solvent as by injecting the emulsion into boiling water.  The concentration of the aqueous solution of antichlor may vary from 0,02 to 5 per cent and be used in proportions of antichlor solution to chlorinated rubber solution of 0,125 to 1 up to 1 to 1.  Results of tests are given.
Patent GB-1172479-A (GB)
Title: Composition for glass ceramic sufaces
Inventor: HYDE JAMES FRANKLIN
IPC: C11D3/16
Filed: 1968-06-10
Abstract: 1,172,479. Emulsion-polymerized dimethylsiloxane cleaning compositions. DOW CORNING CORP. 10 June, 1968 [26 June, 1967], No. 27420/68. Heading C5D. [Also in Division C3] An aqueous cleaning composition comprises: (a) 1À5-6À5 wt. per cent of an emulsionpolymerized dimethylsiloxane having a viscosity of 350-15,000 cs. at 25‹ C., (b) 0À5-1À5 wt. per cent of an alkali metal silicate, borate, carbonate or phosphate, (c) 20-30 wt. per cent of an abrasive, (d) 0-0À4 wt. per cent of a thickening agent, (e) 0-5 wt. per cent of a nonionic surfactant, and (f) the balance water. Suitable components listed are; (a) polymers containing not more than 5 mol. per cent of the siloxane units of units R 3 SiO 1 / 2 , R 2 SiO, RSiO 3 / 2  and SiO 2  in which R represents a hydrocarbon or substituted hydrocarbon group; (b) Na, K and Li metasilicates, tetraborates, phosphates, pyrophosphates, tripolyphosphates and carbonates; (c) silica and diatomaceous earth; (d) methyl cellulose, hydroxyethyl cellulose, colloidal SiO 2 , bentonite and polyvinylcarboxy polymers; (e) polyoxyalkylene nonionic surfactants. In examples compositions are prepared containing (a) emulsion polymerized dimethylsiloxanes of viscosities from 500 to 14,200 cs., (b) sodium metasilicate Œ sodium tripolyphosphate or sodium carbonate, or borax, (c) diatomaceous earth or aluminium oxide, (d) optionally a polyvinylcarboxyl polymer, (e) optionally isooctylphenyl polyoxyethylene alcohol, and (f) water; they are used to clean glass ceramic surfaces.
Patent GB-1399523-A (GB)
Title: Colour television receiver
IPC: H04N9/465
Filed: 1972-06-12
Abstract: 1399523 Colour television MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 12 June 1972 [22 June 1971 (2)] 27426/72 Heading H4F A PAL-switch in a colour television receiver is controlled in phase by the circuit of Fig. 2 receiving the received colour bursts at 11, the bursts being amplified at 13 and passed via a detector 14 and amplifiers 15, 16 to produce a rectangular wave output during each vertical blanking period, the trailing edge of this rectangular wave coinciding with the occurrence of the first colour burst following the vertical blanking period, the rectangular wave being differentiated at 17 and the positive pulses eliminated at 18 to provide a negative pulse coinciding with the first burst (at +135 degree phase relative to the B-Y modulation axis) following each vertical blanking period. In a further embodiment (Fig. 5, not shown) the rectangular wave is fed to a NOR circuit (26) which also receives a signal derived by integrating the synchronizing signal, shaping this integrated signal and integrating the shaped signal. The output of the NOR circuit is passed via a differentiator and diode to produce an output signal as in Fig. 2.
Patent GB-643363-A (GB)
Title: Improvements in or relating to electrostatic dust precipitation
IPC: B03C3/45
Filed: 1947-10-14
Abstract: 643,363. Electrostatic precipitation. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Oct. 14, 1947, No. 27520. Convention date, Oct. 30, 1946. [Class 39 (i)] Back ionization in the ionizing zone of a twostage precipitation is reduced by cooling one or more of the non-discharging electrodes to a temperature below that of the gas under treatment by the passage of cooling fluid therethrough out of contact with the gas. A two-stage precipitator of the kind described in Specification 475,443 comprises an ionizing stage A, Fig. 1 and a precipitation stage B, both mounted in a duct C. Cooling fluid from a pump 32 and heat exchanger or cooler 34 is supplied through tubular non-discharging electrodes 22, which extend between headers formed on opposite sides by the supporting rectangular frame 4, mounted in the casing C. The outer tubular electrodes 20 are sealed to the frame 4 throughout their length so that they have a semicircular cross-section. The wire discharging positive electrodes extend between arms 44 supported by insulators 40 carried by a bar 38. Electrode dimensions and potentials are specified; the electrodes 20, 22 may consist of aluminium, coated iron or of stainless steel. The precipitation stage B comprises discharging and non-discharging plate electrodes 46, 48 arranged alternately. In a modification, the supporting frame 4, Fig. 5, has the waterheaders 50 subdivided by partitions 54, 56 so that the cooling liquid circulates through pairs of non-discharging electrodes 64, 68 in parallel. Dust-scraping rings 62, 66 are reciprocated through rods 70, which are shown displaced by 90 degrees from their operating position. Curves are included to show the maximum temperature of the non-discharging electrodes permissible for various electrode voltages without back-ionization in air treated for the removal of silica dust, and show also permissible temperature with varying dew points of the treated air. The cooled electrodes may be washed by the flow of condensate collected by troughs 82, Fig. 8, fixed on sloping sides 80 by the supporting frame. A pipe 84 may connect the water-cooling headers of adjacent units.
Patent GB-1189534-A (GB)
Title: A Method of and Apparatus for Installing Electric Power Cables
Inventor: ENDACOTT JOHN DERRICK
IPC: H02G15/24
Filed: 1967-06-15
Abstract: 1,189,534. Cable joints and terminations. BRITISH INSULATED CALLENDER'S CABLES Ltd. 14 June, 1968 [15 June, 1967], No. 27585/67. Heading H2E. [Also in Division F2] In a method of jointing or terminating cables through which dielectric and/or cooling fluid flows, the duct of the cable is blocked by the insertion of an expansible blocking means, or by the application of a mechanical blocking means to the orifice of the duct. These means may be used separately (Figs. 1 and 2, not shown) or together (Fig. 3) in blocking one cable duct. The expansible means may comprise a catheter 1, e.g. of nitrite rubber, which is inserted into the duct and then inflated by the injection of a fluid at high pressure, and the mechanical means a spring-loaded plunger 32. The blocking means may be positioned before, i.e. in the factory, or after capping of the cable, and before or after the exposed cable end has been prepared for jointing or terminating, after which rigid mandrels may be inserted into the duct. A conductive ferrule is attached, e.g. by compression jointing, after the blocking, and includes transverse passages 29 in its sides, through which fluid may flow outside the ferrule and the blocking means may be removed after use. The plunger 32 in the arrangement shown is attached to an operating rod 31 which extends through a bore 35 in the ferrule, and is held in the blocking position against the action of an axial coil spring 36 by tubular latches 39. The end of the rod engages indentations in the latches when they are screwed in; release is effected by applying additional fluid pressure to the back of the plunger to force it closer to the duct, which causes release of the engagement, which in turn results in the latches being forced outwards by further springs 40. A release cord or Bowden cable may also be used. When in position a sealing ring 34 (Fig. 2, not shown) holds the plunger firmly against the ferrule. Good electrical connection is achieved by the bolting together of the interfitting ferrules (Fig. 4, not shown) in the region shown about the line IVIV in Fig. 3.
Patent GB-1019364-A (GB)
Title: Improvements in the production of titanium dioxide
Inventor: MAS ROBERT JEAN
IPC: C01G23/07
Filed: 1962-07-18
Abstract: Titanium dioxide is made by the oxidation of titanium tetrachloride at an elevated temperature produced in a flame in the reaction zone, wherein at least some of the suspension of titanium dioxide in hot gas produced is withdrawn preferably by suction from the reaction zone through at least one cooled exit pipe which passes through the walls bounding the reaction zone and opens into the reaction zone at a point remote from said bounding walls at or beyond the further extremity of the flame.  A preferred embodiment consists of an essentially cylindrical reactor with its longitudinal axis vertical, a single axial downward pointing flame and the withdrawal tubes for titanium dioxide being arranged radially and opening at or near the axis. Some of the tubes for withdrawing the titanium dioxide bearing gases may be used to introduce cold gases and may be arranged so that the suction force for removal of the product is obtained by Venturi action.  Product not thus withdrawn may be collected from the bottom of the reactor.  The invention is described with reference to three figures (not shown) which show a reactor arranged for suction, an alternative wherein gas injection is employed to provide the suction and a detail drawing of a Venturi action withdrawal tube.
Patent GB-1101094-A (GB)
Title: A contact arrangement for a junctionless non-rectifying solid state switching device
IPC: H01L45/00
Filed: 1965-06-30
Abstract: 1,101,094. Solid-state switching devices. DANFOSS A.S. 30 June, 1965 [4 July, 1964], No. 27709/65. Heading HlK. In a contact arrangement including two electrodes, at least one electrode is provided with an evaporated junctionless non-rectifying solid-state switching layer, and the two electrodes are urged together to compress the layer. An electrode 3, e.g. of C or Ta, is located in bushing 1. The electrode 6, e.g. of burnt or sintered carbon, has an evaporated solid-state switching layer 7 thereon and this layer is compressed against electrode 3 by a ring of epoxy resin 8. In an alternative embodiment (Fig. 2, not shown), two electrodes are provided, each having an evaporated switching layer (11, 12) together with an additional switching layer (13) between the two layers whilst the whole easing is filled with an epoxy resin. In another embodiment (Fig. 3, not shown), two Ta wires each bent into a hook at one end and having a switching layer over the hook portion, are hooked together and held in a stressed condition by epoxy resin.
Patent GB-175328-A (GB)
Title: Improvements in cylinder reboring machines
IPC: B23B41/12
Filed: 1920-10-01
Abstract: 175,328. Adams, G. R. Oct. 1, 1920. Boring-bar machines.-In a machine for boring internal-combustion engine cylinders, the boring- bar is worm-driven at 8, Fig. 2, and drives a feathered plate-cam 14, Fig. 4, which rocks a link 18 thereby intermittingly engaging a pawl with a ratchet-toothed feed-nut 22, the latter being mounted on the threaded portion of the bar and adapted normally to rotate with it. The push-rod 19, Fig. 3, is adjustable in the link 18 for varying the feed-intervals and carries a stop 27a engaging a slot in the pawl 20, which is normally held in engagement with the feed-nut by means of a spring 27. The halves of the divided feed-nut 22, Fig. 5, are held together by a garterspring 29. The boring-bar is balanced by a hanging weight 50, Fig. 2, and is returned to lifted position by a hand-crank 49 and pinion and rack 48, 47, after the feed-nut segments have been removed.
Patent GB-862876-A (GB)
Title: Improvements in or relating to fibrous boxes and like containers
Inventor: PANKHURST KENNETH GEORGE ALFRE
IPC: B65D27/16
Filed: 1958-08-29
Abstract: 862,876. Envelopes. REED & CO. Ltd., A. E. Aug. 19, 1959 [Aug. 29, 1958], No. 27855/58. Class 146(2). [Also in Group XVII] An envelope has a pair of co-operating closure surfaces, e.g. 9, 10, the surface 9 having a normally non-tacky adhesive coating and the surface 10 a normally tacky adhesive coating of resinous or elastomeric nature, so that they adhere on being pressed together but are separable without transfer of one coating to the other. The blank shown has perforations 3, 4 along the inner edge of the coated surfaces 9, 10 as wide as windows 7, 8 and is folded together along a crease line 2 to enclose an article..