baber/WOPTO huggingface dataset:
Patent GB-1425990-A (GB)
Title: Multiphase rectifier arrangement
IPC: H02M7/162
Filed: 1973-06-22
Abstract: 1425990 Rectifying LICENTIA PATENTVERWALTUNGS GmbH 22 June 1973 [23 June 1972] 29894/73 Heading H2F A multiphase rectifier comprises for each phase, a single phase bridge of two controlled rectifiers 10, 12 and two further rectifiers 11, 13 and a commutating capacitor 14 connected across a diagonal of the bridge, one side of the capacitor 14 being connected to one phase connection whilst the other side is connected via a further rectifier 15 to another phase or to the A.C. neutral. The invention is applicable to forced commutation rectifying circuits in which each controlled rectifier 10, 20, 30 is turned off by a respective capacitor 14, 24, 34 and commutating thyristor 12, 22, 32 before the time of natural commutation so as to improve the power factor of the system. For minimum output voltage only some or all of the commutation thyristors 12, 22, 32 are triggered. In Fig. 2 (not shown) diodes 15, 25, 35 for charging the commutating capacitors 14, 24, 34 via resistors 16, 26, 36 are connected to the neutral point O. A resistor is also included in series with each diode 13, 23, 33. In Fig. 3 (not shown) a further capacitor is included between the cathodes of diodes 11, 13 and a further diode included between the cathode of diode 13 and the right hand side of capacitor 14.
Patent GB-1312948-A (GB)
Title: Method and apparatus for blow moulding plastics articles
IPC: B29C49/34
Filed: 1970-06-19
Abstract: 1312948 Blow-moulding OWENS-ILLINOIS Inc 19 June 1970 [20 June 1969] 29946/70 Heading B5A In an extrusion-blow moulding process, successive portions of a continuously, vertically extruded tube are engaged within a series of vertically reciprocating blow-moulds travelling along separate pairs of guides parallel to the direction of travel of the blow moulds at least one blow-mould travelling downwardly while the tube is inflated therein and while at least one other blow-mould travels upwardly. As shown in Figs. 1, 2, a tubular parison 46 is fed from extruder 30 and engaged by one of blow moulds 44, 46 which moves downwardly therewith while the other blow-mould is open and moves upwardly past it. Blow mould 44 is supported by carrier 60 comprising two plates 100, 102 and slides on rods 68, 70. The mould halves 48, 50 are keyed to rods 84, 86 which are rotated for mould opening or closing through linkage 144 by cam roller 140. Blow mould 46 is similarly supported on carrier 66. Vertical movement of carriers 60, 66 is effected through linkages 112, 114 from cam wheels 108, 110 (see Fig. 3, not shown). Blowing air is supplied to the moulds when descending and closed around the parison through lines 210 via rotating valve 200 (Figs. 7, 8, not shown). Valve 200, cam rollers 140, 142, and cam wheels 108, 110 are all mounted on a common drive shaft 116. The moulds are held closed against blowing pressure by biasing mechanism (Figs. 4, 6, not shown) actuated from cams 314, 316. The moulds have refrigerated cooling ducts (278, Fig. 10, not shown), and an electroformed metallic surface (260) encapsulated, e.g. in a silicone compound (262).
Patent GB-722893-A (GB)
Title: Improvements in and relating to enclosed resilient wheels for vehicles
IPC: B60B17/00
Filed: 1950-12-07
Abstract: 722,893. Vehicle wheels. MACLEAN, J. M. Dec. 7, 1950. No. 29947/50. Class 144 (1). A resilient wheel of the form described in Specification 594,180 comprising a rubber &c. filling 16 extruding from the hub 10 to the rim and two sets of blades 11, 14 extending alternately from the rim radially towards the hub and vice versa, is formed (or fitted) with side-plates 12, 15 extending from the hub (or rim) into proximity with the rim (or hub). The blades may be provided with tongues 18, 21, extending through apertures 19, 22 in the side-plates, to which tierings 17, 20 may be fitted
Patent GB-1269719-A (GB)
Title: Fabrication of metal tube from helically rolled strip
Inventor: WEST KENNETH WILLIAM THOMAS
IPC: B21C37/12
Filed: 1969-06-13
Abstract: 1,269,719. Helical tube forming; joining strip end to end; welding by fusion; flying shears. BYARD KENWEST ENG. Ltd. 9 June, 1970. [13 June, 1969], No. 30025/69. Headings B3A, B3E, B3R and B3W] Apparatus for coiling flat strip into a helical tube comprises a first set of rollers 31, Fig. 8, which engage the underside of a horizontally fed strip, a second set of rollers 36 which engage the top side of the strip and a third set of rollers 40 which engage the underside of the strip, each roller of a set being adjustable about an axis normal to its rotation axis to alter the helix angle and the third set of rollers being adjustable toward and away from the first two sets of rollers to alter the tube diameter. The strip is guided to the bending rollers 31, 36, 40 by rollers 53 which engage its edges. The strip may be continuous, Figs. 12A, 12B, being passed from a coil to a straightener, which comprises upper and lower staggered rolls 79, 80, the lower rolls being adjustable in directions 81, and a drive roll 82 adjustable in a direction 83, then to a welding station 85 where the leading edge of a strip is welded to the trailing edge of another strip, after being aligned by blocks 84, then to shearing discs 87 for edge trimming the strip, an edge beveller (92), Fig. 12B (not shown), and thence via guide rolls to the bending apparatus. Alternatively the strip may be made by connecting plates end to end, Figs. 1 to 5 (not shown). A plate is moved from a stack (10) to a table (1) where its end edges are bevelled and thence to a table (2) from which it is moved by rolls to abut the trailing end of the strip. A welding head (22) welds the two ends while they are moving in a longitudinal direction along the table (2). The transfer from the stack (10) to table (1) and then table (2) is by means of suction pads (9) mounted on a boom (4). The tube is welded inside and out, both sides of each edge of the strip having been bevelled. The welding is of the electric three wire type and each welding position has three reels, one for each wire, and a flux hopper. The formed tube may be divided into lengths by a blade (65), Fig. 6A (not shown), which contacts one side of the tube and is moved at the same speed as the tube.
Patent GB-1158560-A (GB)
Title: Improved Gas-Flow Circuit Interrupters having improved Orifice and Contact Constructions
IPC: H01H33/91
Filed: 1967-06-29
Abstract: 1,158,560. Fluid blast switches. WESTINGHOUSE ELECTRIC CORP. 29 June, 1967 [1 Sept., 1966], No. 30086/67. Heading H1N. In a fluid blast switch the moving contact assembly 20 moves with an insulating nozzle 14 surrounding the contacts and having a throat 15 spaced downstream from the moving contact assembly. The nozzle 14 is attached to a cylinder 7 co-operating with a fixed piston 8 to produce the fluid blast. The switch may be immersed in liquid such as oil or gas such as CO 2  or SF 6 . Both fixed and moving contacts 4, 20 are hollow allowing the compressed fluid to flow though them. In a modification (Fig. 2, not shown) the outlet 16 (31) of the nozzle closely surrounds the fixed contact 4 and slides over it. In another modification (Fig. 3, not shown) the contact member 24 is solid and contact 20 vents through passages (43) in the solid end 12 of cylinder 7. The piston and cylinder end may have embedded coils (50, 55) connected in series with an insulated arcing contact (60), Figs. 4, 6, 7, not shown) which under heavy current conditions assist movement of the portion as described in Specification 1,149,660. In another modification (Fig. 9, not shown) a resistance 100 in series with the insulated arcing contact is enclosed in the piston.
Patent GB-210841-A (GB)
Title: Improvements in or relating to screw propellers or the like
IPC: B63H1/16
Filed: 1922-11-03
Abstract: 210,841. Gill, J. H. W., and Gill Propeller Co., Ltd. Nov. 3, 1922. Screw and like propellers.-Relates to screw propellers and the like having a shroud or casing attached to or integral with the blade tips the contour of the inner surface of the casing being such that the nett cross sectional area, after deducting the area of boss and blades, varies irversely as the square root of the axial distance of the particular section from a datum section. The blades C, Fig. 1, are attached to a boss A having a fairing B and carry a casing D. With blades of negligible thickness the inner contour of the casing would be curved as at E. In considering blade thickness, blades and boss are designed so that the contour is mainly that of a conical frustrum F with bevelled front and rear edges G, G<1>, following the shape E. The blades have a maximum thickness at about onetihrd of the width from the leading edge. The axial pitch increases from the leading, to the following edge such that the product of the square root of the cross sectional area and the mean pitch is constant. The radial pitch may also be increased from tip to root. The blade edges may be straight or curved so as to be convex on the inlet side. The length of the casing is one-fifth to one-quarter of the diameter at the inlet, and the angle of the coned part F is between 9‹ and 13‹. The propeller may be placed in a casing between two sets of fixed guide blades when used as an axial-flow impeller. The casing may be made in sections S, T, Fig. 11, each carried integrally by a blade tip, the blade U, V, being secured to the boss W by bolts. The sections terminate in diagonally disposed inwardly arranged flanges x, and are secured together by bolts through the abutting flanges. Specifications 142,713, 175,922, and 177,047 are referred to.
Patent GB-995282-A (GB)
Title: Improvements in or relating to apparatus for teasing fibrous material
Inventor: FRASER HENRY KENNEDY
IPC: D01G11/00
Filed: 1962-05-01
Abstract: The subject-matter of this Specification is substantially the same as that described in Specification 995,281, but the claims are concerned with mounting and adjusting a wedge for securing a bladed member in operative relationship to a pinned feed roller and a pinned cylinder.
Patent GB-684204-A (GB)
Title: Process for the production of a surface layer on iron or steel
IPC: C23C22/47
Filed: 1950-12-11
Abstract: Iron or steel is treated with an acid aqueous solution containing oxalic acid and/or an oxalate, a chlorate and phosphoric acid or a phosphate of which the cation is capable of forming a complex iron salt soluble in the solution; such phosphate may be ammonium phosphate.  If hard water is used in making the solution, sulphuric acid or a water softener may be added or sodium tripolyphosphate may be used as the only phosphate or in conjunction with another phosphate.
Patent GB-154181-A (GB)
Title: Improvements in wireless telephone transmitters
IPC: H03C1/26
Filed: 1920-10-26
Abstract: 154,181. Ges. f³r Drahtlose Telegraphie. Nov. 11, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Wireless telephony; wireless signalling.-In a wireless telephone transmitter, the microphone 1 varies the amplitude of oscillations produced by a valve generator 4, through the medium of a thermionic relay 3 the anode-cathode resistance of which is included in the anode circuit of the valve 4. Microphone currents vary the internal resistance of the valve 3 and hence the potential of the anode of the generating-valve 4.
Patent GB-812924-A (GB)
Title: Improvements in sensitising dyes for photographic silver halide emulsions
IPC: C09B23/06
Filed: 1955-10-24
Abstract: Unsymmetrical carbocyanine dyes of the general formula <FORM:0812924/IV (c)/1> wherein R and R1 are substituted or unsubstituted alkyl or aralkyl groups, R2 is an alkyl, hydroxyalkyl or aryl group, V is an aryl group, n and n1 are 1 or 2 and X represents an anion, are prepared by reacting a quaternary salt of a chloro-substituted 2-methylbenzimidazole with a phenyl-substituted benzoxazole base carrying a 2-(o -anilformyl methylene) group. Examples are given of the preparation of dyes wherein n is 2, n1 is 1, V is phenyl and R1 is ethyl, and wherein R is p-carboxybenzyl and R2 is ethyl, or wherein R is ethyl and R2 is b -hydroxyethyl. Specification 505,979, [Group XX], is referred to.
Patent GB-1425493-A (GB)
Title: Apparatus for intermittently advancing a web of flexible film
IPC: B31B23/02
Filed: 1973-06-26
Abstract: 1425493 Variable-speed gearing SHELDAHL Inc 26 June 1973 [10 April 1973] 30405/73 Addition to 1424709 Heading F2D  In a modification of the apparatus for intermittently advancing a web of flexible film disclosed in Specification 1,424,709, one way clutches 65a, 67a are incorporated in the drives to the output shaft 70.
Patent GB-427970-A (GB)
Title: Improvements in or relating to electric fuse holders and boxes therefor
IPC: H01H85/20
Filed: 1933-11-02
Abstract: 427,970. Electric cut-outs. WIRTH, E. H., 5, Batson Street, PARTRIDGE, E. G., and BROWN, W. H., 112, Uxbridge Road, both in Shepherd's Bush, London. Nov. 2, 1933, No. 30413. [Class 38 (i)] A fuse box comprises one or more insulator bodies, each of which carries a number of fuses adapted to be bridged across a pair of terminals one at a time, means being provided for inspecting and indicating the fuse in use. As shown, the bodies are hexagonal prisms mounted on pins by means of bushes 15 which are engaged by external handles provided with pointers co-operating with numerals on the cover. Windows 30 are also provided to enable the fuses in circuit to be viewed. The fuse wires are carried through passages and end grooves in the bodies and are secured by means of screws 22 to terminal plates which co-operate with stationary terminals 17, 18.
Patent GB-1045617-A (GB)
Title: Improvements in and relating to lifeboats
IPC: B63C9/02
Filed: 1964-08-04
Abstract: 1,045,617. Lifeboats. CANTIERE NAVALE DI COGOLETO BIANCHI & CECCHI. Aug. 4, 1964 [March 10, 1964], No. 30522/64. Heading B7A. In a lifeboat obtained by firmly connecting a prefabricated hollow element 1 (Fig. 1, not shown), constituting the hull of the boat to another prefabricated element including in a single piece the saxboard 8 and the gunwale 7, the back 6 of the longitudinal benches 5, the benches 4, 5 and an element 5<SP>1</SP> substantially perpendicular to the benches, the element 5<SP>1</SP> extending downwards from the inner edge of benches 5 defines with the bench seat 5 and the hull 1 a buoyancy compartment 10 to be filled with buoyant material, said compartment extending to a cofferdam 9 formed by the upper portion 3 of the wale, by the gunwale 7, and by the backs 6 of the benches 5.
Patent GB-486728-A (GB)
Title: Improvements in electrodes for the production of per-compounds
IPC: C25B11/08
Filed: 1937-11-06
Abstract: 486,728. Electrolytic production of percompounds ; electrodes. ADOLPH, G., and BRETSCHGER, M. E. Nov. 6, 1937, No. 30523. Convention date, Nov. 12, 1936. [Class 41] An anode for the production of percompounds comprises a platinum sheet 4 connected by tantalum rods 3 to a copper lead-in rod 1 covered by a rubber sheath 2 having lips 5 extending partially over the tantalum rods. By the interposition of the tantalum member, on which nascent oxygen does not develop, corrosion of the sheath 2 is prevented.
Patent GB-648109-A (GB)
Title: Improvements in and relating to axial-flow pumps
IPC: F04D3/00
Filed: 1948-11-25
Abstract: 648,109. Axial-flow pumps; hydraulic turbines. WIGLEY, G. A. Nov. 25, 1948, No. 30579. [Classes 110((i) and 110(iii)] Water or other liquid passes through the hollow shaft of an axial-flow pump and is ejected in the form of propulsive jets through orifices situated at the trailing edges of the impeller blades. Water from a pump 3, Fig. 1. passes by way of a hollow shaft 1 provided with ports 2 to a cavity 4 in the impeller hub 5 and thence to tubes or channels 6, Figs. 1 and 3, in the trailing edges of impeller blades 8, where it issues through nozzles 9, thereby rotating the impeller, and joins the water being pumped by the impeller. The nozzles may have circular or oval outlets or may be in the form of slots extending lengthwise of the impeller blades. There may be several impellers in series. The pump 3 may supply propulsive water to more than one axial-flow pump. In a modification, the shaft is stationary, and the impeller is journalled to rotate thereon.
Patent GB-1067715-A (GB)
Title: Improvements in sheet feeding apparatus
Inventor: SCHWEBEL ADOLF
IPC: B65H1/30
Filed: 1964-08-04
Abstract: 1,067,715. Feeding sheets. MABEG MASCHINENBAU G.m.b.H. NACHF HENSE & PLEINES G.m.b.H. & CO. Aug. 4, 1964, No. 30595/64. Heading B6B. In sheet feeding apparatus wherein a new sheet pile 1 is raised by a power drive to engage the depleted pile 10 which is also being raised by an auxiliary power drive, a safety device is arranged to cut-off power to the drive for the pile 1 when any part of the pile 1 engages the pile 10 and lifts it. As shown, the pile 1 is on a table 2 suspended by chains 3 guided on wheels 4, 5, the wheel 4 being driven continuously or step-by-step by a motor (not shown) having terminals 24, 25. The pile 10, from which sheets are being separated by a sucker 12, rests on bars 11 supported by slides 7, 8 suspended by chains 13 guided on wheels 40, 41, one of which is power driven. At least one chain 13 is resiliently engaged by a roller 14 associated with a switch in the circuit of the motor for the pile 1, and the arrangement is such that when the top of the pile 1, or even a raised corner 1a thereof, engages and lifts the pile 10, the chain 13 will be slack, and the roller 12 will thus move forward bodily to open a switch 19 in the motor for the pile 1. The roller 14 is carried by a rod 16, urged by a spring 15 from a housing 42, and provided with an adjustment screw 17 which is engaged by a roller 20 on a bar 42 carrying the switch 19. The bar 42 is urged towards the rod 16 by a spring 44, and the switch 19 is closed when the chain 13 is taut. Modifications of the mounting of the roller 14, the switch 19, and of the circuit of the motor for the pile 1 are described and shown.
Patent GB-1163069-A (GB)
Title: Motor Unit for Machine Tool Heads.
IPC: B23Q1/48
Filed: 1968-06-26
Abstract: 1,163,069. Grinding. FRIEDRICH DECKEL PR€ZISIONS MECHANIK & MASCHINENBAU oH.G. 26 June, 1968 [19 July, 1967], No. 30597/68. Heading B3D. [Also in Division F1] A flange 12, projecting downwardly from the housing 10 of a grinding head and mounted on a shaft rotating about an axis A, has a dovetail guide 14 in which an end plate 16 can be adjusted radially of the axis A and clamped in adjusted position. A hub 24 fixed to the plate 16 has mounted therein, by axially spaced ball bearings, a shaft 28 rotating about an axis B and carrying a chuck 20 in which a grinding tool 22 is insertable. A turbine rotor 38 is mounted on the shaft 28 outward of the hub. A hollow housing 26 is mounted by ball bearings on the hub 24 and has a cap member 30 secured thereto. A compressed air line is connected to a bore 32 in the cap, the air entering an annular chamber 34 defined between the side wall of the cap 30 and a wall portion of the housing 26 and flows through nozzles 36 in the housing wall to impinge on the blades of the rotor 38 to rotate the shaft 28.
Patent GB-155810-A (GB)
Title: Improved grinding tool
IPC: B24D18/00
Filed: 1920-10-29
Abstract: 155,810. Mayer, F. Dec. 22, 1919, [Convention date]. Addition to 149,686. Tools.-Instead of using aluminium as a metallic support for the abrading-material in making grinding-tools as set out in the parent Specification, zinc, cadmium, tin, lead, or silver, or other metals of like properties, or alloys of these with aluminium, are used. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of alloys of the metals set out above with one another. This subject-matter does not appear in the Specification as accepted.
Patent GB-997077-A (GB)
Title: Improvements in or relating to methods of preparing binary crystalline compounds
Inventor: BROWN ALLAN
IPC: C30B9/00
Filed: 1960-09-06
Abstract: Binary crystalline compounds are produced by preparing a mixture consisting essentially of the two constituent elements of the compound and a third element which has a melting point within the range of temperatures in which the said compound can exist in the desired crystalline form, and in which third element at least one of the constituent elements of said compound is soluble when the third element is molten; heating the mixture and agitating it so as to produce a mixture consisting essentially of a liquid phase and two solid phases, the liquid phase being a saturated solution of at least one of said constituent elements in the third element and the two constituent elements being present respectively in the two solid phases; continuously agitating the mixture so produced while maintaining it at a temperature, within the range of temperatures in which the said compound can exist in the desired crystalline form, such that the compound is formed in said crystalline form by reaction between a solute element and the solid phase in which the other constituent element is present and such that the compound is stable with respect to the third element; and separating the compound from the remainder of the mixture produced by the first three steps.  The elements in the initial mixture may be present at least partially in combined or alloyed form. In the example the b  polymorph of thorium disilicide is formed by placing a mixture of silicon, bismuth and thorium in a silica capsule which is pressurized, sealed and subjected to vibration.  After heating the capsule to above 271 DEG C. (m.p. of Bi) and then to 700 DEG  C., the product of thorium disilicide embedded in a solid matrix of bismuth, thorium and silicon is treated with nitric acid and the crystals of thorium disilicide separated from the remaining thoria and silicon by screening. Thorium digermanide and uranium disilicide may be prepared in a similar way.  Reference has been directed by the Comptroller to Specification 889,775.
Patent GB-636149-A (GB)
Title: Improvements in and relating to dog spikes
IPC: E01B9/08
Filed: 1947-11-19
Abstract: 636,149. Spikes. WILLIAMS, Ltd., H., and WILLIAMS, O. R. Nov. 19, 1947, No. 30724. Addition to 605,792. [Class 89 (ii)] Resilient rail spikes of oval sectior with a curved head e as in the parent Specification have the start of the head formed by a loop c the centre of which lies in the axis of the shank a. The loop receives a mandrel to counteract the resilience of the head during the driving of the spike.
Patent GB-950618-A (GB)
Title: Improved non-return valve
IPC: F16K15/14
Filed: 1960-09-07
Abstract: 950,618. Valves. ALUMASAC Ltd., E. C. LEWIS, and R. P. PEAKE. March 28, 1961 [Sept. 7, 1960], No. 30766/60. Heading F2V. A non-return valve comprises a body 1 having an orifice 12 disposed in a face 9 formed on a flange 6 in which one or more openings 14 are provided, a diaphragm being mounted across the face so as to either seat against the latter under fluid pressure in one direction for closing the orifice or lift therefrom for permitting fluid flow to take place in the opposite direction from the orifice for passage between the diaphragm and the face to escape via the openings. The diaphragm 7, which may be of metal, rubber or synthetic plastic material, is provided with a bead 10 for engagement with the flange. A reinforcement 15 may be provided on the diaphragm. In a modification, the opening 14 may be slotted outwardly.