baber/WOPTO huggingface dataset:
Patent GB-1511185-A (GB)
Title: Apparatus for and method of making paper and/or paper articles
IPC: D21J7/00
Filed: 1976-12-13
Abstract: 1511185 Paper-making J M KIDD 13 Dec 1976 [3 Feb 1976 16 March 1976] 4101/76 and 10430/76 Heading D2A [Also in Division D5] Apparatus for making paper articles from pulp comprises an open ended box 10 over the mouth of which is located a screen 12. A mould 11 having walls 20 which define the outline of the article to be made is located over the screen. In use, the base/ screen/mould assembly is immersed in a water tank 28 with the screen below the water level. Pulp 31 is then poured into the mould 11 and the whole assembly is raised to the position deposited in Fig. 4 where a layer of pulp 33 has been formed on the screen and the screen is at the water level. Further raising of the assembly, as in Fig. 5, causes the falling water level within the box 10 to form a vacuum in the box which consolidates the layer 33. The article thus formed can be pressed between the screen and an upper plate and then dried in an oven. Water marks may be applied (see Figs. 8 and 9 not shown) to the article before pressing and a mask may be interposed between the mould and box to control the outline of the article.
Patent GB-1483135-A (GB)
Title: Coal gasification process with procedures for continuously feeding lump coal under pressure and apparatus therefor
IPC: C10J3/02
Filed: 1975-01-30
Abstract: 1483135 Wet separating KAMYR Inc 30 Jan 1975 [31 Jan 1974 20 Jan 1975] 4102/75 Heading B2H [Also in Division C5] A method of delivering to a gasifier vessel 10, Fig. 1, coal, oil shale or lignite of particle sizes falling within a predetermined range of sizes (free of fines), the lower limit of which is approximately " nominal diameter e.g. in the range "-2" nominal diameters involves the establishment of a continuous flow of liquid (water or oil and light tar) along a first continuous flow path 20 at low (atmospheric) pressure, feeding coal or like particles from a hopper 42 downwardly through the free surface of the liquid in the chamber 50 forming part of the first flow path, transferring coal particles of the required size in incremental volumes of liquid into a second continuous flow path of liquid 26 at elevated pressure by use of a sluicing aparatus 30 (described below) provided with a screen 92 of the requisite size, and conveying the particles in the liquid of the second flow path by line 70 to a mechanical separator 32 mounted at the inlet 12 to the gasifier vessel 10. In the separator the particles are moved by a screw conveyor 96 upwardly through the free surface of the liquid, thereby falling into the inlet 12. Liquid and entrained fines passing through a screen 98 surrounding the screw conveyor, flow along line 102 to a centrifuge 36 where such fines are removed. The purified liquid is pumped back to the sluicing apparatus. Entrained fines in the first liquid flow are similarly removed by centrifuge 34. The apparatus includes provision for counteracting the net loss of liquid, particularly from the second flow path to the first. The sluicing apparatus, Figs. 2 to 4, consists of a pocketed wheel 72, see Fig. 4, mounted for rotation within a liner 76 having ports 78, 80, 82 and 84 which register with the inlets 52, 64 and outlets 58, 68 to the apparatus, in the first and second flow paths, respectively, see Fig. 2. During filling of a pocket 74 in the rotating wheel 72, fine coal particles are drawn through the peripheral slots in the screen 92. The liner may be provided with peripherally projecting grooves 94 acting as flow breakers adjacent the port openings 80 and 84 of the second flow path. The pocketed wheel 72 may be either cylindrical or tapered with the wheel diameter increasing in the direction of a clearance adjusting hand wheel 88, Fig. 3.
Patent GB-794431-A (GB)
Title: Improvements in or relating to scaffolding
IPC: E04G1/14
Filed: 1955-02-11
Abstract: 794,431. Scaffolding. MITCHELL ENGINEERING, Ltd., and WING, W. F. April 19, 1956 [Feb. 11, 1955], No. 4182/55. Class 20(2) A scaffolding for inclined structures comprises a plurality of H-units having uprights 1, 2 which are inclined, or are adjustable to an inclined position, in the plane of the H-unit. In the embodiment described, H-units of adjustable inclination comprise upright 1, 2 pivotally connected to the ends of a cross member 3. Vertically adjacent .H-units are connected together by two L-shaped tubular steel units 14 each comprising a length 15 having a shorter length 16 pivoted thereto, the lengths 15 and 16 being connected to the uprights 1, 2 and cross members 3 respectively by means of clips 13-secured to the uprights and cross members. In an alternative form, the means for connecting vertically adjacent H-units consists of a U-shaped unit having two pivotal joints in its cross member. The upper ends of the uprights of the H-units have brackets 7 which may be secured to the horizontal scaffolding members. Swivel clamping couplings (not shown) for bracing members are carried by loose rivets 5 of the pivotal joints between the uprights 1, 2 and cross members 3. One of the uprights 1 of each H-unit carries a fixing' bracket 12 which can be secured to the wall adjacent to which the scaffolding is erected.
Patent GB-1000581-A (GB)
Title: Miniature semiconductor device
IPC: H01L23/485
Filed: 1963-02-01
Abstract: 1,000,581. Semi-conductor devices. HUGHES AIRCRAFT CO. Feb. 1, 1963 [Feb. 9, 1962], No. 4223/63. Heading H1K. A semi-conductor device comprises a semiconductor body with an electrode attachment to one surface extending over an insulating layer on the body surface, a housing with a conductive end wall attached to the opposite surface of the body, an insulating side wall, and an insulating wall at the other end through a passage in which a contact to the electrode attachment is hermetically sealed. In a typical embodiment circular superimposed P and N regions are formed in one face of an N-type body by sequential diffusion of boron and phosphorus or arsenic respectively through oxide masking. Circular and arcuate electrodes 8<SP>1</SP>, 6<SP>1</SP>, Fig. 2, are formed on the regions with extensions to large areas 10, 12 on the oxide layer by vapour deposition of aluminium through a metal templet. The resulting element is mounted electrodes uppermost on a nickel-iron or molybdenum plate 20 (Fig. 4). A flattened section from which concave ended protrusions extend is then stamped in the bend of a length of wire. The apertured base of ceramic cup 24 metallized at 33, 33<SP>1</SP> is threaded over the protrusions, in which gold-alloy balls 22, 22<SP>1</SP> are placed, and the plate carrying the semi-conductor assembled over it with areas 10, 12 in register with the gold balls. The assembly is heated to bond the various parts together and the flattened section of wire then cut to isolate the electrodes. In another arrangement (Fig. 5) external connection to the gold balls is made via the metallized walls of conical depressions 44, 46 formed in the base of the cup and metal coatings or plates 48 originally applied as one and later separated by the slot. The resulting sealed assembly is attached via a metal plate and ceramic heat sink to the inner base wall of a metal cup and covered with potting resin through which connections to the electrodes extend. Alternatively it is placed on a metal header through which leads extend and a metal cap sealed over it.
Patent GB-727730-A (GB)
Title: Improvements in variable speed electric drives embodying a frequency converter or frequency changer
IPC: H02P27/04
Filed: 1952-02-18
Abstract: 727,730. Converters. SCHWARZ, B. Feb. 13, 1953 [Feb. 18, 1952], No. 4247/52. Class 35. [Also in Group XXXVII] A self-driven frequency converter FC has a stator winding S, commutator C, and slip-rings SL, and is adapted to supply a motor M through reversing switches 1, 2. Commutator brushes B are connected to tappings t<SP>1</SP>-t<SP>4</SP> in the secondary winding SE of a transformer T, each phase winding of the transformer having tappings similar to those shown. The machine FC is started by closing switch a to apply maximum voltage to the commutator C, and is accelerated by closing switches b, c, d, in sequence, only one of the switches being closed at a time. When the switch d is closed, so that the frequency converter is running at maximum speed, the motor M is connected to the sliprings SL and is thus started at the lowest operational frequency. Increasing the voltage applied to the brushes B has the effect of reducing the speed of the frequency converter and increasing the voltage and frequency supplied through slip-rings SL to the motor M. Although the operation of the switches a-d causes abrupt changes in the voltages applied to the brushes B, the acceleration of the motor M proceeds at a smooth rate since the frequency at the slip-rings SL increases only with decreasing speed of the frequency converter. Reduction of the motor speed leads to regenerative braking at a controlled rate. Switches 3, 4, connect the motor stator winding SM directly to the transformer secondary winding SE for high-speed operation, whilst a switch 5 establishes a star-point for the winding SM. In a modification, Fig. 2 (not shown), the frequency converter has a stator winding as well as the rotor winding connected to tapping- points in the transformer winding SE. A combined regulation of the rotor and stator voltages of the machine FC is thus obtained. In a further arrangement, Fig. 3 (not shown), the secondary windings of two induction regulators or other variable voltage transformers, may be selectively connected to the rotor circuit of the frequency converter. Reversal of the motor may be effected by means of the frequency converter acting as a phase-changing machine, and a separate auxiliary motor may be available for driving the frequency converter when desired. The variable frequency may be derived from the commutator of the converter, whilst the supply transformer may be an autotransformer. Specification 684,415 is referred to.
Patent GB-396807-A (GB)
Title: Improvements in or relating to machines for sizing, grading or classifying
IPC: B07B1/28
Filed: 1932-02-12
Abstract: 396,807. Sifting and separating apparatus. BERRISFORD, W. H., Highfields, Sandon Road, Longton, Stoke-on- Trent. Feb. 12, 1932, No. 4275. [Class 117.] Jigging apparatus for screening or classifying coal, ores, &c. consists of a frame 1 reciprocated by a crank mechanism 16, 17, 18, and provided with hard steel pads 9, 11 co-acting with ratchet wheels 12,13 which are free to be driven in one direction by the pads and are held stationary in the other direction by pawls 14, 15. Alternatively, one of the ratchet wheels may be replaced by a crank-shaft or eccentric on which the corresponding end of the frame is supported. In the example shown, the frame has mounted on it three mesh plates 2, 3, 4, and a solid plate 5. The invention is also applied to apparatus for separating materials according to the density of the type in which the materials are caused to stratify by shaking with or without the use of a medium of intermediate density such as sand.
Patent GB-1036735-A (GB)
Title: A rotary coupling
IPC: F16D3/68
Filed: 1963-02-01
Abstract: 1,036,735. Universal joints. 8. M. USTINOV, and N. D. BOCHKOV. Feb. 1, 1963, No. 4279/63. Heading F2U.  A torque transmitting coupling comprises resilient blocks 9, 10 interposed between interpenetrating blades 7, 2 on driving and driven parts 5, 1 and centring means comprising a resilient sleeve 21. fixed to rigid sleeves 19, 20, the outer sleeve 19 being a clearance fit in an aperture in the driving part 5, and the inner sleeve 20 being a clearance fit on a sleeve 11 which is an interference fit in an extension 12 of the driven part 1. The coupling is particularly suitable for coupling marine engines to propeller shafts, and in the normal direction of rotation the blocks 9 are compressed. The blocks 9 may be made twice as thick as the blocks 10, and may be formed by two resilient elements equal in thickness to those forming the blocks 10.
Patent GB-524938-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L9/22
Filed: 1939-02-10
Abstract: 524,938. Motor mountings. ELECTROLUX, Ltd. Feb. 10, 1939, No. 4448. Convention date, March 8, 1938. [Class 35] In a vacuum cleaner with one end of the motor fan unit supported by a ring of rubber or 'the like interposed either between the motor fan housing and a spaced surrounding housing or between the latter and a spaced surrounding outer casing or an abutment thereon, the gap between the portions of the housings transverse to the axis is non-uniform and the ring is disposed at the point of minimum distance between the spaced housings and is provided with a flange extending into a wider part of the gap and spaced from one or both of the housings. In the form shown the ring 14 is disposed where the gap 21 between the transverse casing member 18 and the end 20 of the motor fan unit 13 is a minimum and the flange 19 of the rubber ring rests against the end 20 or between that and the tapering portion of the member 18. To eliminate interference with wireless, condensers may be connected to the inner casing 13. The other end of the unit may be supported by an insulating partition 15 and a rubber ring 16.
Patent GB-687072-A (GB)
Title: Manufacture of shaped articles of woven or knitted material made from yarns of nylon
IPC: D06M23/14
Filed: 1950-02-21
Abstract: 687,072. Moulding nylon fabric into threedimensional articles. BROCKLEHURST-WHISTON AMALGAMATED, Ltd., HULME, T. H. W., and CASTLE, V. Jan. 15, 1951 [Feb. 21, 1950; April 13, 1950], Nos. 4468/50 and 9163/50. Class 87 (ii). In a method for the manufacture of shaped articles of woven or knitted material made from yarns of nylon the fabric which is to receive a permanent three-dimensional form is subjected to gradually, and uniformly increasing pressure from a heated former at a temperature high enough to permit the material to take a permanent set but not high enough to injure the fabric. The appropriate temperature range is 200‹-220‹ C., and the yarns are then extended to form the shape of the article required and become permanently set. The time required is up to one minute. The fabric to be shaped is clamped between two plates 12, 13 which have holes 14, located exactly opposite by dowels 16, to permit the formers 15 to pass through them. The formers are of solid aluminium, cylindrical and domed at their ends for articles such as brassieres and filter caps. They may be heated electrically by cartridge type elements inserted in them. The formers are mounted on a plate 20 which is moved by hydraulic pressure applied to pistons 23 in cylinders 25, their upward travel being regulated by collars 30 on columns 19 on which the plate 20 is guided and which support the clamping device. The pressure is controlled by a lever 29 which operates valves 27, 28. The clamping plates may be faced with leather to prevent the fabric from slipping, and the edges of the holes should be bevelled to prevent nipping of the fabric. By placing several layers of fabric on the machine several mouldings may be made simultaneously. The first Provisional Specification mentions that the material may be provided with hems of another material and with ties or other fastening devices.
Patent GB-716285-A (GB)
Title: Improvements in or relating to radio communication systems
Inventor: COLE ALICK WILLIAM HAMILTON
IPC: H04B7/08
Filed: 1953-02-03
Abstract: 716,285. Radio signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 3, 1953 [Feb. 20, 1952], No. 4530/52. Class 40 (5) A main station for communicating with a number of mobile stations comprises a transmitter T connected to an aerial system TA1 ... TA4, and a plurality of receiving aerials RA1 ... RA4, each feeding its own receiver R1 ... R4 respectively, and adapted for reception in a different direction. The heterodyne receivers have a common local oscillator L0 and a common automatic gain control system AGC. The receiver outputs are fed to a switching arrangement RSS which automatically connects that giving the best signal to the operator's desk OD. At the same time the transmitter T may be switched automatically by circuit RSS over lead CL and switching arrangement TSS, to that transmitting aerial which is correspondingly directed, These operations may be performed alternatively by manuallyoperated means. The transmitter may alternatively be connected to an omni-directional aerial OA.
Patent GB-266707-A (GB)
Title: Improvements in writing telegraphs and like systems
IPC: G08C21/00
Filed: 1927-02-18
Abstract: 266,707. Tuscher, J. E. Feb. 23, 1926, [Convention date]. Writing telegraphs. -Relates to writing telegraphs of the kind in which the movement of a stylus at the transmitter varies a resistance a, Fig. 1, and so governs the current in a coil f, which, influenced by a constant magnetic field and a control-spring, controls the movement of a stylus at the receiver. According to the present invention the resistance a varies with displacement of the cursor c in proportion to the ordinates of a hyperbola, in order that the line current may be proportional to that displacement. The receiver stylus is lifted out of action simultaneously with the transmitter stylus under the control of alternating current. Transmitter. In the transmitter, Fig. 7, the writing is traced by a stylus 1 mounted at the apex of a pantograph which comprises links 3, 3<1> pivoted to arms 4, 4<1>, which rotate upon shafts 5, 5<1>, carrying cursors 8, 8<1>. The cursors serve to tap off varying amounts of resistance from the hyperbolically wound rheostats 7, 7<1>, which are capable of angular adjustment about the shafts 5, 5<1>, and are in series respectively with the adjustable resistances 12, 12<1>, and with the line terminals 13, 13<1> and common return 10. The magnitudes of the resistances are such that the currents in the lines are proportional to the displacement of the cursors. When the stylus 1 and arms 3, 3<1> are raised, an alternating current circuit is closed through the terminals 14, 13<1> by a switch which comprises a frame 18 pivoted at 19. The frame is lifted' by a spring when the arms 3, 3<1> are raised, and thereby brings the spring 16 upwards into contact with a terminal 15. In a modification in which A.C. replaces the D.C. current, the resistances 7, 7<1> are wound so that their intercepts are inversely proportional to the squares of the displacements of the cursors. Receiver. The receiver may comprise a pantograph 53, 53, 54, 54, Fig. 10, carrying a stylus 29 for marking a travelling paper band. Each pivoted arm 54 is controlled by a spring 5, is counterweighted at 28, and is integral with a coil f located in a magnetic field, the coil taking up a position corresponding to the strength of the current received from the lines through the terminals 33, 33<1> and common return terminal 37, regulating resistances 34, 34 being also provided. When the stylus at the transmitting station is lifted, alternating current is superimposed on the direct current supplied to the terminals 33, 37 and the R.M.S. current through the coil 38 then becomes strong enough to pull down the armature 41, raising the frame 43 which is pivoted at 40 and lifting the arms 53. In modifications (a) various types of winding may be substituted for the coils f, or the magnetic rield may be provided by a solenoid; (b) the arms 54, 54 may be pivoted on a common axis, and (c) a relay arrangement may be adopted, each arm 54 controlling a hyperbolically, wound rheostat in the circuit of a further receiving apparatus similar to that described above.
Patent GB-525045-A (GB)
Title: Improvements in or relating to dress shields and apparatus for making same
IPC: A41D27/13
Filed: 1939-02-13
Abstract: 525,045. Dress shields; moulding plastic materials. SPANEL, A. N. Feb. 13, 1939, No. 4668. [Class 141] [Also in Group V] A dress shield includes a seamless foundation deposited from rubber latex and comprising two crescent-shaped flaps curving integrally into each other at the concave margins thereof. The foundation is provided preferably with reinforcing ridges at the convex margins thereof, the ridges being formed during the deposition process. In the form shown in Figs. 1 and 2, the foundation 10 has inner and outer fabric coverings 16, 17 secured thereto by stitching 18 passing through holes 13 in the convex margins of the foundation, the holes being formed during the deposition process. In a modification, the convex margins of the foundation are reinforced by ridges of semi-pear shape or having the shape of distorted ellipses, and the holes may be dispensed with. In another modification, the fabric coverings are dispensed with, and wicking or other absorbent material is passed through the openings in the foundation. In a further modification, the foundation has a partial covering stitched to the outer side thereof. The foundation is formed by deposition on a mould which may take the form shown in Figs. 5 and 7 comprising a crescent-shaped member 21 bounded by a raised border 24 having abrupt edges 26, the member being provided with a series of circular bosses 27 each having an abrupt edge 28. The moulds. are mounted in parallel planes on a rotatable shaft 31, Fig. 10, disposed in a bath containing an aqueous-dispersion of rubber. In a modification, the bosses provided on the mould are of elongated formation. In another modification, the raised border is omitted, and the mould is provided with abrupt edges at the convex margins thereof to enable semi-pear shaped ridges to be formed. In a further modification, the mould flares outwardly at the convex margins to enable ridges having the shape of distorted ellipses to be formed.
Patent GB-1493046-A (GB)
Title: Magnetically focussed power valves
IPC: H01J21/18
Filed: 1975-02-04
Abstract: 1493046 Magnetically focused valves STANDARD TELEPHONES & CABLES Ltd 4 Feb 1975 4713/75 Heading H1D A magnet assembly with two opposed pole pieces is enclosed in an insulating housing having an aperture whereby a power triode valve 7a may be inserted into the gap 7 between the polepieces. The housing of vacuum moulded polypropylene comprises a casing 1 with a flange 4 to which caps 5, 6 are screwed. The housing may be drum shaped with an aperture in one flat side.
Patent GB-122082-A (GB)
Title: Improvements in or connected with Agricultural Digging Implements.
Inventor: YOUENS HARRY
IPC: A01B1/02
Filed: 1918-03-18
Abstract: 122,082. Youens, H. March 18, 1918. Forks; spades.-To render a digging-implement such as a spade or fork capable of being used by a one-handed man, a frame 1 is provided rigidly secured to a base portion 4 and connected at its upper end to a swinging arm 3 the lower end of which is loosely attached to the digging- implement to serve as a support for the same. In the operation of digging, the implement and frame take the position shown in Fig. 1, the base portion 4 of the frame with an adjacent portion 5 resting on the top edge 6 of the spade or other digging implement and serving as a tread therefor. Extra guiding-bars 7, 8 serve to give a little play in the position of the frame on the edge 6. Bars 9, 10 strengthen the frame as a whole. The spade 11 is attached to the swinging arm 3 by an eye-bolt 12 passed through the handle and screwed by a fly-nut 13. The eye-bolt is secured to the arm by passing through an eye formed by making partial eyes in the end of the arm 3 and in the end of a link 14 pivoted at 15 to the arm 3 so that when the link and arm are angularly disposed a passage for the insertion of the ring of the eye-bolt into the eye is left but on arranging the link and arm in alinement this passage is closed. The link and arm are locked in the position by a bolt 16. After the spade has been forced into the ground and the handle depressed, the implement and frame take the position shown in Fig. 2 in which the frame rests on the ground and the spade swings freely supported by the arm 3. On pushing the spade slightly forward so that the tread clears the frame, the spade may be turned to either side to dispose of its load.