baber/WOPTO huggingface dataset:
Patent GB-171118-A (GB)
Title: Improvements in furnaces for fuel in dust or powdered form
IPC: F23C3/00
Filed: 1921-11-07
Abstract: 171,118. Oertel, F. Nov. 6, 1920, [Convention date]. Pulverulent - fuel furnaces. - An ignition and combustion chamber 1, circular or polygonal in cross section, is arranged transversely to the heating-chamber 4. Powdered fuel and air from a nozzle 7, and air from a pipe 2 surrounding the nozzle are injected vertically and tangentially into the combustion chamber. The combustion products after following the course indicated by the arrows intersect the path of the fuel and air before entering the heating-chamber 4. An opening 3 at the bottom of the combustion chamber allows slag to pass into a collector 13. Cooling- channels 5<b> are arranged between the inner and outer walls of the combustion chamber.
Patent GB-296889-A (GB)
Abstract: 296,889. O'Hare, T. V. Aug. 26, 1927. Jigs c for treating tin ores and other materials are mounted back to back and their plungers d are operated simultaneously by a rocking shaft s and doublearmed lever r mounted between them. The shaft s is operated from a rotary shaft v, adjustable crank pin 6, and links 7, 8. Springs i are interposed between the upper ends of the plunger rod f and bars h extending across the jig, and ball joints are provided in the rods f for connection to the levers r. Each jig c may be divided into a number of compartments, and one rotary shaft v may operate two pairs of jigs placed end to end with the operating means between the two pairs.
Patent GB-1440582-A (GB)
Title: Anion exchange resins
IPC: B01J41/14
Filed: 1973-06-22
Abstract: 1440582 Extracting uranium from solutions ROHM & HAAS CO 22 June 1973 [29 June 1972] 29779/73 Addition to 1335991 Heading C1A [Also in Division C3] Uranium is extracted from acidic solutions, e.g. of uranyl sulphate, by contact with a strong base anion exchange resin containing quaternary ammonium groups as substituents on aromatic nuclei, the resin containing more than 50 wt. per cent of monovinyl aromatic units and being cross-linked by a mixture of trimethylolpropane trimethacrylate and divinylbenzone in a weight ratio from 5 : 1 to 1 : 1. In an example, the resin is a styrene/divinylbenzene/trimethylolpropane trimethacrylate copolymer which has been chloromethylated with chloromethyl methyl ether and then aminated with trimethylamine.
Patent GB-231829-A (GB)
Title: Improvements in firelighters
IPC: C10L11/04
Filed: 1924-12-11
Abstract: 231,829. Samsioe, S. April 7, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Composition fuel.- A firelighter consists of a cardboard casing or the like containing sawdust impregnated with paraffin to which may be added potassium chlorate and upon which a layer of charcoal pieces is applied. A further layer of the sawdust may be placed on the charcoal. The ends of the firelighter may be dipped in molten paraffin.
Patent GB-1358854-A (GB)
Title: Control circuit for ac supply circuit
IPC: G05F1/45
Filed: 1971-06-25
Abstract: 1358854 Automatic voltage and current control LICENTIA PATENT-VERWALTUNGS GmbH 25 June 1971 [25 June 1970 3 Oct 1970] 29957/71 Heading G3R A circuit for controlling the current in a load includes two arrangements for limiting the current through anti-parallel thyristors in series with the load. Normally, switching is for complete cycles, but phase-chopping may be used by one limiting arrangement. In the circuit shown in Fig.1, a heating resistor 4 is supplied with power from a source u w  through anti-parallel thyristors 1, 2 controlled by a regulator input 6 producing a control voltage U R  which charges a capacitor 8. The voltage U R  is opposed by a feedback voltage U g  derived from a voltage transformer 11 which senses the load voltage u 4 . The resultant voltage U 8  determines the response time of a Schmitt trigger circuit 12, the output from which is fed to coincidence circuits 13, 13'. These circuits also receive synchronizing signals from pulse generators 14, 14' so that a flip-flop 15 causes firing pulses from a generator 3 to trigger thyristors 1, 2 at the beginning of a cycle. In normal operation, the power to the load is controlled by opening and closing the switch 1, 2 for complete cycles in a ratio determined by the control voltage. The load current is sensed by a transformer 16 connected to a current limiting circuit 20. When the load current exceeds the rated current of the thyristors 1, 2, a diode 18 becomes conductive and varies the charge time of the capacitor 8 in such a manner as to reduce the time for which the thyristors are gated on. A second current limiting stage includes a Zener diode (26) Fig. 2 (not shown). When this diode breaks down, a D.C. voltage is combined with a sawtooth voltage in a flip-flop (27) to produce, through a coincidence circuit 19, a phase delay in the firing pulses from generator 3. The thyristors 1, 2 are thus controlled by phasechopping to provide accurate control at high current levels.
Patent GB-728008-A (GB)
Title: Vehicle wheels and tyres therefor
IPC: B60C7/22
Filed: 1952-11-26
Abstract: 728,008. Wheel tyres. A.P.V. CO., Ltd., BOISSELOT, J. L., and BOISSELOT, L. E. Nov. 26, 1952 [Nov. 30, 1951], No. 29997/52. Class 144 (2). A solid tyre for wheelbarrow, truck and like wheels comprises a rubber ring 16 with a metal ring 17 embedded therein so that the radially inner surface 18 of an extension of the ring 17 lies flush with the inner periphery of the rubber ring to form a surface to seat on the rim 15 of a wheel. As shown, a solid wheel body 10 with an axle hole 11 and a flanged tyre-seating rim 12, 15 has a removable tyre-retaining flange 13 bolted thereto. A T-section reinforcing ring 17 of the rubber tyre has its limb or web 21 flanged at 18<SP>1</SP> to provide the inner peripheral surface 18, and has radial and lateral projections 19, 20 respectively formed on its cross-member to provide for firm bonding with the rubber. Holes 22 may be provided in the web 21 further to improve the said bonding.
Patent GB-661548-A (GB)
Title: Improved v-shaped belts
IPC: F16G5/00
Filed: 1949-11-23
Abstract: 661,548. Belt gearing. HJARTSATER, J. J. Nov. 23, 1949, No. 30005/49. Class 80 (i). A V-belt has a section suitable for a drive between a grooved pulley and a flat pulley. Half of Fig. 1 shows the belt placed in a grooved pulley 1, the other half showing the belt on a flat pulley 2. The belt has a convex upper face and a 'concave lower face, the profile of each being formed of straight portions a and a curved portion b. The angle subtended by the straight portions of the lower face is greater than that subtended by the upper face. In a modification a belt is formed with flat upper and lower faces and concave side faces, the profiles thereof having straight and curved portions similar to those described above.
Patent GB-1169439-A (GB)
Title: Improvements in or relating to the Continuous Casting of Metals.
Inventor: WERTLI ALFRED
IPC: B22D11/04
Filed: 1967-06-29
Abstract: 1,169,439. Continuous casting. A. WERTLI. 29 June, 1967 [12 Aug., 1966], No. 30047/67. Heading B3F. One or more moulds 2 are connected to a furnace 1 and surrounded by a cooler 3 and a cast strand 6 is withdrawn intermittently by at least one pair of first rollers 8, 9 and at least one pair of second rollers 8<SP>1</SP>, 9<SP>1</SP> which intermittently and alternately grip the strand and have their lower rolls 9, 9<SP>1</SP> rotated, also intermittently, by a rack and pinion 28, 27. The first top rolls 8 are pressed down to cause gripping of the strand 6 when the bottom rolls 9 are rotated forwards several times to cause 20 or 30 short forwarding movements of the strand before a limit switch 15 actuates a changeover valve 13 (controlling a pressure fluid) to cease the operation of the rack 28 and cause the second rolls 9<SP>1</SP> to rotate. The strokes of the racks 28, 28<SP>1</SP> are determined by a valve 19 operated by a pulse generator or cam 21, the speed and form of which determines the stroke cycle and strand movement time respectively. In a modification, the racks (28, 28<SP>1</SP>) are on opposite sides of a flat strand (6). Both rollers 8, 9 of a pair may be pressed against the strand and both may be rotatably driven.
Patent GB-855903-A (GB)
Title: Improvements in the autothermal cracking of hydrocarbons to cracked gas rich in olefins
Inventor: EDER KURT
IPC: B01J8/04
Filed: 1959-09-03
Abstract: The cracking of gaseous or vaporisable hydrocarbons to gases rich in olefines, e.g. ethylene and propylene is effected autothermally and flamelessly in the presence of inert, nonporous, refractory, rigidly-arranged bodies in two stages, the preheated hydrocarbon being reacted in the first stage with insufficient oxygen for complete combustion, with or without the addition of steam, in the presence of copper and/or cobalt and/or compounds thereof coated on the inert bodies and in the second stage the remaining hydrocarbons being cracked in the presence of the inert bodies.  Preferably a single reactor is used, the gases passing successively through three layers of inert bodies, the middle layer only having the catalyst coating.  The bodies are preferably ceramic, e.g. porcelain, sillimanite or corundum balls of 20-100 mm diameter carrying 0,05-2% by weight of catalyst which may be activated with up to 0,5-5% of cerium.  Steam may be added in amounts of 5-30% by volume of hydrocarbon and oxygen 10-40%.  The hydrocarbon may be ethane, propane or butane or liquid hydrocarbons boiling in the range 40-200 DEG C. and may contain up to 30% by volume of olefines.  The reactants may be preheated to 300-650 DEG C.
Patent GB-836432-A (GB)
Title: Improvements in or relating to electrical servo-systems
IPC: G05D3/14
Filed: 1956-10-02
Abstract: 836,432. Electric follow - up systems. GENERAL ELECTRIC CO. Ltd., and WAYMAN, C. J. Oct. 2, 1956, No. 30058/56. Class 40 (1). [Also in Group XIX] In a servo-system in which a controlled member is driven into a position corresponding to the value of an input voltage, the value of the error signal fed to an amplifier in the system is limited to a variable extent which depends upon the instantaneous position of the controlled member. The input voltage is applied over terminals 14a, 14b, to high-gain D.C. amplifier 17 which drives a motor 18 until this displaces a potentiometer 23 sufficiently to back off the input voltage. The backing-off potential is applied to the grids of cathode followers 38 and 39 and determines the potentials across diode limiters 45 and 46 connected to the input of the amplifier. If, with a negative input voltage, potentiometer 23 provides a positive backing- off voltage cathode follower 39 conducts more to increase the voltage on the anode of diode 46, thereby decreasing the negative error signal capable of causing diode 46 to conduct. Similarly with a positive input signal and a negative backing-off voltage cathode follower 38 drops the voltage on the cathode of diode 45 and diminishes the positive error voltage necessary to cause diode 45 to conduct. The setting of variable taps on resistors 42 and 44 determines the outside limits between which the motor 18 can follow the input signal. A generator 22 driven by motor 18 is loaded by parallel resistors 27, 28 and 29. A tap on resistor 27 provides negative rate feed-back over a resistor 31 while a tap on resistor 28 provides such feedback over a non-linear resistance 32 to augment negative feed-back when the speed of motor 18 exceeds a predetermined value. Negative rate feed-back is also applied by resistor 29 to the grids of cathode followers 38 and 39 and causes anticipation of the limits applied to diodes 45 and 46 by the potentiometer 23. One such servo system as described may rotate a drum in accordance with one input variable while a second such servo-system may drive a pen over the surface of the drum in accordance with a second input variable to produce a cartesian plot. The inputs to the systems may be switched, including lifting the pen from the drum surface, to record two sets of two variables simultaneously.
Patent GB-248856-A (GB)
Title: Improvements in and relating to pitot tubes for flow meters
IPC: G01F1/46
Filed: 1924-12-15
Abstract: 248,856. Cole, E. S. Dec. 15, 1924. Pitot-tube apparatus.-In order to correct for errors due to angularity of flow relative to the ends of Pitot tubes, the tube is so formed that the angle A, between the tangent to the lower end and the vertical is about 76‹ 28<1>.
Patent GB-1405338-A (GB)
Title: Hot-melt compositions
IPC: C09D157/02
Filed: 1973-06-25
Abstract: 1405338 Polymer compositions MITSUI PETROCHEMICAL INDUSTRIES Ltd 25 June 1973 30160/73 Heading C3P Hot melt adhesive and coating compositions comprise (1) a petroleum resin having a softening point of 60 to 130 C. and a bromine value of 10 to 50, and produced by polymerizing in the presence of a Friedel-Crafts catalyst mixtures of hydrocarbons produced in the cracking or reforming of petroleum and boiling at (A) -15 to +45 C. comprising predominantly C 4  and/or C 5  olefins and diolefins and at (B) + 145 to +280 C. comprising predominantly unsaturated aromatic compounds, in a weight ratio of (A) : (B) of 5 : 100 to 80 : 100, and (2) a copolymer of ethylene with 15 to 40 weight per cent of vinyl acetate having a melt index of 2À5 to 200 and/or amorphous polypropylene, in a weight ratio of (1) : (2) of 1 : 2 to 4 : 1. The compositions may also contain dialkyl phthalate plasticizers, petroleum and polyethylene waxes, phenolic and metal stearate stabilizers. Examples describe hot melt adhesive compositions comprising petroleum resins, paraffin wax and (1 to 3) ethylene/vinyl acetate copolymer and (4 to 6) amorphous polypropylene.
Patent GB-862068-A (GB)
Title: A dipper tooth for earth-excavating equipment
Inventor: RATKOWSKI THOMAS A
IPC: E02F9/28
Filed: 1959-09-04
Abstract: 862,068. Earth-working equipment. AMERICAN BRAKE SHOE CO. Sept. 4, 1959, No. 30234/59. Class 68(1). A detachable nose portion 30 is located on the shank portion 31 of a digger tooth of earthworking equipment by lugs 57a entering sockets 57 and a pin 65 secures the nose and shank portions together, the pin being held in position by a C-shaped leaf spring 66 fitted over a boss 68 in a slot in the forward side of a keyway 60 extending through the nose of the shank portion. Three preferred embodiments are described in detail.
Patent GB-1478201-A (GB)
Title: Cops made of plastics material
IPC: B65H75/30
Filed: 1974-07-08
Abstract: 1478201 Disposable cop tube MONTEFIBRE SpA 8 July 1974 [10 July 1973] 30247/74 Heading B8M A plastics disposable cop tube comprises a hollow cylindrical body having 12 to 20 equispaced, longitudinal reinforcing ribs which extend radially inwardly, which terminate 6 mm short of one body end, which are terminated or shaped at the other body end to form a seating for a body whose cross-section is in the form of an equilateral triangle and where axial length is 12 mm, and which at a section nearer the one body end extend further inwardly. Body 1 has ribs 2 whose wider portions 3 grip a spindle. The whole cop tube is moulded from one piece, e.g. from high impact polystyrene or ABS resin. The cross-sectional shape of the ribs is preferably that of an isosceles triangle. The ribs may flex when the cop tube is placed on a spindle. The outer cop-tube surface may be roughened.
Patent GB-1534220-A (GB)
Title: Mandrel for fabricating an air spring
IPC: B29C33/00
Filed: 1977-07-19
Abstract: 1534220 Expanding rollers GOODYEAR TIRE & RUBBER CO 19 July 1977 [24 Aug 1976] 30292/77 Heading F2U A mandrel for use in fabricating an air spring has a fixed diameter portion 60 and an expansible portion 60<1> formed by levers 65, the portions 60, 60<1> extending between end members 30, 34 on a rotatable shaft 12. The levers 65 have notches 65a to enable an inexpansible ring to be fitted on the end of the air spring, which end is turned over to accommodate the ring. Portions 32, 36 of the mandrel are telescopically arranged, sliding of end member 30 varying the axial length. The levers 65 are simultaneously pivoted and the end of the air spring turned up by the inflation of tubes 71, 81. There may be levers 65 at both ends of the mandrel (Fig. 3, not shown).
Patent GB-370881-A (GB)
Title: System for regulating electric motors or generators by means of conductors or circuits the resistance of which varies as a function of the voltage applied to the terminals thereof
IPC: G05F1/00
Filed: 1930-10-09
Abstract: 370,881. Maintaining defined speeds. GAUMONT - FRANCO - FILM - AUBERT, 3, Rue Caulaincourt, Paris.-(Assignees of Soc. des Etablissements Gaumont ; 57, Rue St.-Roch, Paris.) Oct. 9, 1930, No. 30299. Convention date, Oct. 12, 1929. Void [Published under Sect. 91 of the Acts]. [Class 38 (iii).] For automatically maintaining constant speed of motors, or constant voltage, or frequency of generators a regulating resistance is placed in circuit which varies in value according to the voltage applied to it. The resistance may be any of the following : electrolytic "valves," different metals, metalloids or their components in contact, mercury or carbon arcs, Crookes' tubes, electron tubes, or any combination of these in series or parallel. The resistance 10, Fig. 8, is placed in series with the field 9 of a shunt motor 8 to maintain constant motor speed in spite of voltage variations in the supply. Alternatively the field 9 may be that of a generator supplying the field of the motor 8. In a further arrangement, a shunt motor has an additional field energized by the plate current of an electron tube, the grid potential of which is tapped from a resistance connected across a shunt generator driven by the motor. In other arrangements described, both the field circuit of the motor, and of the generator supplying the motor field, have regulating resistances, and the generator may have an additional opposing field. In Fig. 14, a generator 49 has opposing fields 50, 51, the latter being supplied by a controlling generator 52, the field 53 of which is supplied by the generator 49 through a regulating resistance 54, so that the voltage of the generator 49 remains constant. In another arrangement the regulating resistance 54 is in the circuit of one of two opposing fields of the generator 52. Constant frequency of an alternating current supply is obtained by regulating the motor of a rotary converter so that it runs at constant speed.
Patent GB-605964-A (GB)
Title: Joining arrangement for sectional members
IPC: F16B7/18
Filed: 1945-11-14
Abstract: 605,964. Bolted joints. BERNAUDIN, M. Nov. 14, 1945, No. 30523. Convention date, Nov. 16, 1943. [Class 83 (iv)] [Also in Group X] Sectional members converging towards a common point are joined by means of fish-plates, each having more than two radially extending arms and adapted to be engaged between the flanges of the sectional members and secured thereto by bolts. In the form shown in Fig. 1, four I-section girders 1, 11 and 2, 21 are joined by means of two crossshaped members 3, 3<SP>1</SP> having arms adapted to fit between the flanges of the girders. In a modification, the joining members have additional slotted arms 8, 8<SP>1</SP> forming a fork adapted to embrace and be bolted to additional girders 9 and 91, Fig. 4. The Specification as open to inspection under Sect. 91 comprises also further modifications, in one of which the cross-shaped joining members may be in the form .of hollow shells. In another form, Fig. 11 (Cancelled), the vertical girders 1 and 1<SP>1</SP> bear on the horizontal girders 2 and 2<SP>1</SP> through flat members 4b welded to or merely laid against the latter. The joining members comprise cross-shaped fish-plates 3, 3<SP>1</SP> which may be reinforced by additional members 3<SP>11</SP>, Fig. 12, (Cancelled), and may have cut-away portions 11 to receive the ends of additional girders 9 which are bolted between L-shaped plates 12, 12<SP>1</SP>, the bolts of the bases of which are housed within the space 13 between the girders 2 and 2<SP>1</SP>. This subject-matter does not appear in the Specification as accepted.
Patent GB-866337-A (GB)
Title: Catalysts for decomposing hydrogen peroxide
Inventor: LAXTON JAMES WILLIAM
IPC: B01J23/89
Filed: 1957-09-30
Abstract: A catalyst for the decomposition of hydrogen peroxide comprises pellets consisting of powdered silver and powdered copper oxide sintered together.  The pellets preferably contain 80-95%, particularly 91.3% silver, the balance being copper oxide.
Patent GB-436764-A (GB)
Title: Process for balancing out voltage fluctuations of direct current sources
IPC: G05F1/52
Filed: 1934-10-25
Abstract: 436,764. Automatic regulation. KRAWINKEL, G., 25, Bothstrasse, Lichterfelde-Ost, and SCHOLZ, W., 11, Sch÷neberger Strasse, Tempelhof, both in Berlin. Oct. 25, 1934, No. 30620. Convention date, Oct. 25, 1933. [Class 38 (iv)] A compensating circuit for a direct current source E subject to variation of voltage comprises a thermionic triode V and a resistance across which a constant potential e is thereby maintained. As shown in Fig. 1, the resistance r and the triode in series therewith are connected across a portion a, c of a potential divider and the grid circuit of the triode is connected across a portion b, c of the potential divider. In a modification, Fig. 2, the triode V and a resistance r are in series across the potential divider and the grid is connected to a tapping on the last. The grid circuit in each case contains a bias voltage to set the triode to operate about the middle of the straight portion of its anode current-grid volts characteristic. The potential divider may be constituted by two rectifier units when using the invention with an A.C. supply.
Patent GB-282211-A (GB)
Title: Improved airship mooring mast gear
IPC: B64F1/14
Filed: 1926-12-04
Abstract: 282,211. Babcock & Wilcox, Ltd., Brown, A. Hall-, and Jones, E. W. Dec. 4, 1926. Anchoring.-In a mooring mast comprising telescopic elements mounted in gimbals the inner element is formed as a piston and is controlled by the admission to either side of it of pressure fluid e.g. air or oil at different pressures. The mast is centred automatically by the downward movement of the piston and the main haul rope is passed over pulleys on the gimbal frames in such a way that the universal movement of the mast does not alter the tension of the rope. In the arrangementshown in Fig. 1, the piston is first raised by admitting low pressure fluid to the lower end of the cylinder. The ship is then hauled in by means of a rope 16 passing over pulleys on the gimbal frames, the mast at this time being free to swivel without restrain from the haul in cable or the centering ropes 10. The nose fitting of the ship is locked automatically to the cup on the mast and hauling is continued or high pressure fluid is admitted to the cylinder at its upper end. The shoulder 7 on the extension 5 of the piston forces down a crosshead 8 and so raises by means of ropes 10 the weights of a known centering arrangement comprising sliding weights which at the top of their travel engage abutments. Pressure fluid is then admitted to a cylinder 19 to force a socket 17 into engagement with a spigot on the end of the extension 5 and so lock the mast on its central position. The socket 18 may be fixed. Modified locking means are described in which the spigot is carried by an extension of the crosshead the socket being movable as in Fig. 1 or fixed. In a further modification the crosshead is movable in guides carried by an extension of the cylinder which is furnished at its lower end with a socket engaged to lock the mast in its central position by a fluid controlled spigot. In a further modification the crosshead is depressed to centre the mast by one or more plungers working in cylinders to which pressure fluid is admitted from the main cylinder when the main plunger passes a port connecting the two cylinders. Where the control is hydraulic a pneumatic dash pot is provided in the accumulator to give increased flexibility of recoil. According to the Provisional Specifications the ram may be centred by pneumatic or hydraulic cylinders instead of by the ropes 10.