baber/WOPTO huggingface dataset:
Patent GB-1100099-A (GB)
Title: Improvements in convergent-divergent jet exhaust nozzle for supersonic aircraft
Inventor: MEHR HANS PETER
IPC: F02K1/12
Filed: 1966-06-28
Abstract: 1,100,099. Jet propulsion nozzles. GENERAL ELECTRIC CO. June 28, 1966 [Dec. 8, 1965], No.28966/66. Heading F1J. The invention relates to a convergent-divergent propulsion nozzle for a supersonic jet engine, the engine comprising a jet pipe 24 and an outer casing 36 which together define a passage 11 for flow of secondary fluid. The invention is described as applied to a gas turbine jet engine and may be applied to a gas turbine ducted fan engine. The nozzle is formed by a series of flaps 20 which are pivotally mounted at the end 22 of the jet pipe 24 and constitute an adjustable convergent portion of the nozzle. The divergent portion of the nozzle is formed by a series of flaps 28 which are pivotally connected at their downstream ends 30 to a series of outer support flaps 32 which in turn are pivotally connected at their upstream ends 34 to the downstream end of the outer casing 36. The upstream ends of the inner divergent flaps are supported by pivotal links 44 in spaced relation with respect to the convergent flaps 20 in a substantially unconstrained manner so that the divergent flaps 28 are positioned solely by the relative fluid-pressure differentials across the outer support flaps 32 and the inner divergent flaps 28. As shown, the pivotal links 44 are connected to bell-crank levers 48 to which are connected links 46 which in turn are connected to the convergent flaps 20. The bell-crank levers 48 are connected to actuators (not shown) whereby the position of the convergent flaps 20 and hence the nozzle throat area As may be varied. It is not however an essential feature of the invention that the convergent flaps are variable. The essential feature is that the divergent flaps and support flaps are "freely floating" so that they take up positions in dependence on the relative fluid-pressures of the gas stream within the jet nozzle, of the secondary fluid within the passage 11 and of the ambient pressure. The length L of the divergent flaps 28 is substantially greater than the length Lo of the support flaps 32. The secondary fluid in the passage 11 flows into the jet nozzle through the annular gap 40 between the convergent and divergent flaps.
Patent GB-443354-A (GB)
Title: Improvements in and relating to rotary printing machines
IPC: B41F30/04
Filed: 1935-10-21
Abstract: 443,354. Printing-machines. FEENY, V. F., 73A, Queen Victoria Street, London.- (Miehle Printing Press & Manufacturing Co. ; 14th Street, Chicago, U.S.A.) Oct. 21, 1935, No. 28983. Drawings to Specification. [Class 100 (ii)] A rotary printing - machine employing cylinders which are of approximately equal diameter and rotate at the same angular speed, such as an offset machine in which one of the cylinders is covered with soft yielding material, e.g. rubber, is constructed to prevent defective printing caused by creeping of the rubber relatively to the plate cylinder. This is effected by fitting bearers of equal size to the cylinders and arranging that the diameters of the cylinders which coact with the rubber covered cylinder are slightly greater than the diameter of the bearers, and the diameter of the rubber-covered offset or like cylinder is slightly less than that of the bearers.
Patent GB-1068244-A (GB)
Title: Furnace lining block
Inventor: BOOTH CYRIL
IPC: F23M5/06
Filed: 1964-07-14
Abstract: 1,068,244. Furnace lining blocks. STEETLEY REFRACTORY BRICK CO. Ltd. July 13, 1965 [July 14, 1964], No. 29012/64. Heading F4B. Prefabricated blocks of tarred dolomite for metallurgical furnaces, e.g. electric arc furnaces, incorporate a framework comprising U-shaped members 10 and 11 of steel rod connected by rods 12-14 and formed with loops 15-18 extending upwardly of the blocks to facilitate handling. Anchoring of the U-shaped members in the block material is ensured by loops 26-28 placed over the U-legs which are strengthened by cross-ties 23. Reinforcement for the blocks comprises lengths 29 of wire mesh bent in zig-zag fashion and arranged in staggered formation. During manufacture, the framework engages the sides of a mould, batches of heated dolomite/tar mix are added, and the mould is vibrated during or after such additions. The loop 26-28 and reinforcement 29 are inserted during this process, or the loop may be welded to the U-legs initially. In a modification, Fig. 3 (not shown), the U- legs are connected by single rods welded thereto and have L-shaped anchor members similarly attached.
Patent GB-802082-A (GB)
Title: Polymerisation process
Inventor: AGIUS PETER JOSEPH VERMONT JAM
IPC: C08F2/46
Filed: 1955-10-12
Abstract: An unsaturated nitrogenous base is polymerized or copolymerized by exposing the monomers to ionizing radiation, particularly gamma rays, until the polymerization is effected (see Group IV (a).  Mineral lubricating oil compositions comprise an oil and a minor proportion of a polymer or copolymer prepared as above, examples referring to the use of (a) a copolymer prepared from 75 parts by weight of palm-kernel fumarate, 18 parts by weight of vinyl acetate and 6 parts by weight of allylamine or 2-vinyl-5-ethyl pyridine and (b) a graft polymer prepared by grafting 5 parts by weight of allylamine or 2-vinyl-5-ethyl pyridine on to polybutene.  Specification 774,897, [Group IV (a)], is referred to.ALSO:An unsaturated nitrogenous base is polymerized or copolymerized by exposing the monomers to ionizing radiation, particularly gamma rays, until the polymerization is effected. The base may be allylamine, vinyl-allylamine, vinyl ethyl amine, 5-aza-undecene-1, vinyl diethyl ammonia, di-allyl amylammonia, vinyl di-allyl ammonia, 2-vinyl or 2-vinyl 5-ethyl pyridine, 2-allyl or 4-vinyl pyrimidine, vinyl piperazine, 2-allyl pyrazine, 2-allyl or 2-vinyl 8-ethyl purine, 2-vinyl pyrroline or 2-allyl-4 ethyl pyrrolidine.  Monomers with which the base may be copolymerized include maleates and fumarates of palm-kernel alcohols, vinyl acetate, unsaturated hydrocarbons, unsaturated ethers and thio-ethers and acrylonitrile.  Graft polymers may be obtained by polymerizing the base with a polymerized hydrocarbon such as polyethylene, polybutene, polystyrene or a polyalkylstyrene.  Polymerization may be effected in bulk or in solution in a solvent such as toluene or cetane.  Specification 774,897 is referred to.
Patent GB-1358292-A (GB)
Title: Industrial process control system for operations with long time constants
IPC: G05B11/26
Filed: 1971-06-22
Abstract: 1358292 Control of motors F K PREIKSCHAT 22 June 1971 [13 July 1970] 29079/71 Heading H2J [Also in Division G3] A process variable is controlled by a motor driven actuator, e.g. an arrangement for restricting a tube to regulate fluid flow or a continuously running, variable speed, conveyer. (See Division G3.) Two motor control systems are described. In Fig. 3, the motor 34 is a synchronous stepping motor which moves one step per cycle of an A.C. supply. Its direction depends on whether L1 or L2 is energized directly, the other winding being energized via capacitor C6, and this is determined by the triggering of triac TR1 or TR2. Triggering is effected by the respective transistors Q1 ... Q6 for a time dependent upon the difference between a control signal B and a current feedback signal via R17  (which depends only upon the control signal, not the motor speed or current). The difference is applied to an integrating operational amplifier A4. As the motor runs the control signal (process error) diminishes until the transistors turn off. LS1 is a manual override switch and LS2 a limit switch. In Fig. 4, the armature of a D.C. motor is energized for rotation in a direction and at a speed determined by the instant of triggering a triac TR3 in series with an A.C. supply. This is effected in the required half cycle by transistors Q7, Q9 or Q8, Q10. Q7, Q8 emitters are connected to the output of an integrating operational amplifier A5 whose input is the difference between a control signal B and the back e.m.f. of the motor via R37. The base of these transistors receive a biased sine wave from potential divider R38, R41, C9, R43 and their conduction thus depends upon the magnitude and polarity of the output of A5 relative to this sine wave. LS3 are limit switches; L3 is the motor field. The circuits have a dead band when TR3 is not triggered, to ensure that the motor is not energized in both directions at once.
Patent GB-1072474-A (GB)
Title: Compression type refrigerator
IPC: F25D29/00
Filed: 1964-07-15
Abstract: 1,072,474. Refrigerators. SIEMENS-ELECTROGER€TE G.m.b.H. July 15, 1964 [July 15, 1963; Aug. 2, 1963], No. 29154/64. Heading F4H. A compressor type refrigerator comprises an evaporator 6 which cools a low temperature compartment 7 and a normal cooling compartment 8 heat insulated therefrom by walls 9, the temperature of the normal cooling compartment being regulated by a flap 10 or other throttling member which is controlled by a bellows-type thermostat 16 and regulates the flow of cold air from compartment 7 to compartment 8. The temperature of compartment 7 is controlled by a thermostat 20 which controls the operation of a compressor 4. The evaporator comprises wire-ribbed tubing bent to a U-shape and a drip channel 12 of a corresponding U-shape (Fig. 2, not shown), the whole, together with the heat insulating walls 9, 11, being assembled as one unit and installed in the refrigerator through aperture 18. Fig. 3 shows a pivoted control flap 101 provided in a side wall of the evaporator compartment 102, and actuated by a heat-sensitive bellows 110. A spring 107 returns the flap to the closed position when the bellows contracts. The flap may alternatively comprise the normal front access door of the evaporator compartment, Fig. 4 (not shown), the door in this ease being urged towards its closed position by a torsion spring 125. In this embodiment the spring bellows is supported by a bracket 123 on a side wall 124 of the compartment 7. The spring bellows is protected from excess pressure on the flap by a safety spring 126, Fig. 4 (not shown), and by a protective shutter 127, Fig. 5 (not shown).
Patent GB-750923-A (GB)
Title: Process for grafting one polymer onto another polymer
IPC: C08J7/16
Filed: 1953-10-22
Abstract: Thermoplastic synthetic polymer graft coatings on films, sheets, rods, tubes and other articles made of a chemically different thermoplastic synthetic polymer are made by polymerizing in the vapour phase, in the presence of the article and a polymerization catalyst, an ethylenically unsaturated monomer excluding any ethylenically unsaturated hydrocarbon. Monomers mentioned are tetrafluoroethylene and methyl methacrylate.  The article may be made of polyethylene or a superpolyamide.  During the polymerization a small amount of water and also a dispersing agent, e.g. ammonium perfluorocarboxylate, may be present.  The catalyst may be ammonium persulphate or benzoin, and the polymerization may be assisted by ultraviolet light.
Patent GB-893434-A (GB)
Title: Improvements in oil or gas burner
IPC: F23D11/00
Filed: 1958-09-12
Abstract: 893,434. Valves. DRAIJER, W. Sept. 12, 1958 [Sept. 24, 1957], No. 29275/58. Class 135. [Also in Group XI] In an oil or gas burner having a combustion air passage concentrically surrounding the burner, the mouth of the passage is fitted with a device comprising two parts movable relatively to one another for controlling the amount and degree of convergence of the air flow, the parts being so apertured and disposed that relative movement in one direction increase the air flow and directs it more axially, whereas movement in the other direction reduces the air flow and directs it more radially inward. The device may consist of a fixed set of spokes 6 mounted on a fixed sleeve 4 surrounding the burner body 1 and carrying a set of coaxial rings 7 forming a truncated cone, and a second set of spokes 9 mounted on a sleeve 8 slidable on the sleeve 4 and carrying a set of coaxial rings 11 forming a second truncated cone. The angles of the two cones are chosen so that the apertures between the rings close progressively from the outermost inwards as the airflow is reduced. Both sets of rings or the fixed set only may be in the form of tubes through which a coolant flows.
Patent GB-285579-A (GB)
Title: Improvements in and relating to cylinder locks, latches, padlocks and the like
IPC: E05B27/04
Filed: 1926-11-20
Abstract: 285,579. Birch, C., and Phipps, W. Nov. 20, 1926. Locks, revolving-barrel. - In a revolving barrel lock the tumbler pins a, Fig. 1, in the stationary member have reduced extensions b within the usual springs c and serving to limit inward movement of the pins to prevent picking the lock by forcing both pin-members bodily into the stationary member.
Patent GB-1357705-A (GB)
Title: Aromatic polyimides comprising carbinol chains their preparation  and use and intermediates therefor
IPC: B05D7/24
Filed: 1972-06-22
Abstract: 1357705 Para - phenylene - bis - (4 - hydroxymethylenephthalic) acid and its esters INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS 22 June 1972 [23 June 1971] 29349/72 Addition to 1258882 Heading C2C [Also in Division C3] The invention comprises compounds having the general formulµ wherein R and R<SP>1</SP> are univalent, substituted or unsubstituted, aliphatic, aromatic or heteroaromatic radicals. They may be prepared by oxidation of compounds of the formula respectively. The compounds of the invention may be used in the preparation of polyimides.
Patent GB-1280909-A (GB)
Title: Method for making copper-plated aluminum wires
Inventor: ZIEMEK GERHARD
IPC: B23K20/233
Filed: 1970-06-17
Abstract: 1280909 Making composite wire; bending and covering KABELUND METALLWERKE GUTEHOFFNUNGSHUTTE AG 17 June 1970 29381/70 Headings B3A and B3E A method of making wires having an aluminium core and a copper sheath comprises forming a copper tape 4 into a sheath 5 around an extruded aluminium string 2, welding the edges of the copper tape and drawing the sheath 5 down to at least the original diameter of the string 2. The temperature of the string after extrusion from a press 1 is reduced to the range of 200-300‹ C. before the tape is formed around the string. To prevent oxidation of the aluminium string a protective gas atmosphere is provided between the extrusion press 1 and welding means 6. An endless belt feed 7, having jaws 8, pulls the sheath 5 through a die 9 to draw the sheath down to the diameter of the string 2 after which the diameter of the wire is further reduced by drawing the wire through a second die 10 by a disc 11. The wire is finally coiled on a drum 12.
Patent GB-951242-A (GB)
Title: Machine and method for curling lips of container articles
Inventor: EDWARDS BRYANT
IPC: B29C57/12
Filed: 1960-08-25
Abstract: 951,242. Nestable cups &c. ILLINOIS TOOL WORKS Inc. Aug. 25, 1960, No. 29407/60. Heading A4A. [Also in Division B5] A cup of e.g. polystyrene or waxed paper is formed with a rolled over lip 26. Ridges 24 for gripping the cup and a stepped part at the base for nesting are provided.
Patent GB-1369768-A (GB)
Title: Radio navigation beacon
IPC: G01S1/40
Filed: 1973-06-21
Abstract: 1369768 Radio navigation STANDARD TELEPHONES & CABLES Ltd 21 June 1973 29502/73 Heading H4D  A radio navigation beacon comprises a rectilinear array of aerials which are all equallyspaced and to which R.F. energy of a first frequency F1 is commutated to each aerial in turn and to which R.F. energy of a second frequency F2 (differing by a fixed amount from frequency F1) is also commutated to each aerial in turn; the two commutations are at the same constant velocity and in anti-phase relationship whereby the first and second frequencies are simultaneously commutated along the array in opposite directions, or the two commutations are in opposite directions but interleaved in time. It is stated that multipath interference is thereby less troublesome than in the prior art in which a reference aerial radiates frequency F2.
Patent GB-398043-A (GB)
Title: Mattress
IPC: A47C27/00
Filed: 1932-10-22
Abstract: 398,043. Cushions. BROEKMAN, A. J., 125, Oude Gracht, Utrecht, Holland. Oct. 22, 1932, No. 29568. Convention date, Aug. 3. [Class 52 (iv).] A cover contains an assembly of loose cushions 3 .. 7 of equal height and is fitted with a sliding clasp or other quicklyreleasable fastener 2. The cushions may be arranged in two directions, as shown, and may themselves comprise assemblies of smaller cushions within covers. Reference has been directed by the Comptroller to Specification 16565/12, [Class 52 (iv), Upholstery &c.].
Patent GB-1390435-A (GB)
Title: Accelerometer
IPC: G01P15/08
Filed: 1972-06-23
Abstract: 1390435 Rate of change responsive switching circuits TELDIX GmbH 23 June 1972 [23 Aug 1971] 29579/72 Heading H3T [Also in Division G1] The rate of change of a voltage signal at terminal 35 (Fig. 4), e.g. representing the angular velocity of a wheel, determined by differentiating the voltage by capacitor 28 and resistor 32, is compared in differential amplifier 38 with a preset value obtained from resistance network 29, 30, 31, 33. When the rate of change signal is greater than the present value, the resistance of a feedback diode 37 is controlled to keep the output voltage from amplifier 38 at a constant value, the diode 37 may be replaced by a transistor. In one embodiment the gain of amplifier 38 is reduced at a preset output level, and its output maintained constant at a preset input level.
Patent GB-988861-A (GB)
Title: Improvements in or relating to thermionic valves
Inventor: GUNNING WILLIAM JOHN
IPC: H01J21/36
Filed: 1961-08-16
Abstract: 988,861. Thermionic valves. STANDARD TELEPHONES & CABLES Ltd. Aug. 16, 1961, No. 29601/61. Heading H1D. A thermionic valve comprises a plurality of spaced, parallel bars 9, Fig. 1, secured along their lengths to a circular grid support plate 2, a grid being stretched across and secured to the bars 9. An indirectly-heated cathode 11 is insulatingly supported between each adjacent pair of bars 9 and between plate 2 and the grid. An anode 4 is mounted parallel to, and accurately spaced from grid plate 2 by insulating pillars 5. As shown in Fig. 2, the cathodes 11 are mounted between pairs of insulating rollers 12, 13 located between the end grid bars 9. The upper rollers are urged downwards by cantilever springs 14 mounted on plate 2 by pillars 18. A connector 15 secured to the cathodes 11 acts as a stop for the roller 13. The metal bars 9 are brazed in grooves or slots in grid plate 2, and grid wires 10 or an electroformed planar grid are welded to the bars 9. In an alternative arrangement, cantilever springs 20, Fig. 6, mounted at their mid-points, are used to spring load the rollers 12 and pegs 19, 23 hold the rollers in position. Ceramic pillars 21, 22 determine the grid-anode spacing. The copper anode 4 may be fitted with water-cooling means in the centre of ring 3 which is of copper, nickel-iron or nickel-copper. The valve envelope is completed by a glass portion 8 and metal rings 6, 7 having a similar coefficient of expansion. Alternatively, copper rings 26, Fig. 8, may be interposed between plates 2, 3 and rings 7, 6, stress-bearing clamping rings 27 being provided as shown. During manufacture, the anode, sealed to an outer glass sleeve, is urged downwardly against the cathode-grid assembly, which is sealed to an inner glass sleeve, the two glass sleeves then being sealed together during rotation of the complete assembly to form the envelope portion 8.
Patent GB-1488507-A (GB)
Title: Diesel power plant
IPC: B63H21/20
Filed: 1975-06-25
Abstract: 1488507 Power plant HAWTHORN LESLIE (ENGS) Ltd 25 June 1975 [4 July 1974 16 Sept 1974] 29715/74 and 40266/74 Heading F1Q [Also in Divisions B7 and F2]  A transmission between an electric motor 10 or alternator and a diesel engine output shaft 11 which includes a scoop trimmed fluid coupling 12 and a gear box 13 is controlled by means which commence filling the coupling 12 when the engine speed exceeds 82% of maximum speed. As shown in a power augmentation unit for a ship the transmission electric motor 10 is energized from an alternator driven by a turbine which is driven by steam generated by utilizing waste heat from the exhaust of the diesel engine. The electric motor 10 drives through the fluid coupling 12, reduction gear box 13 and a flexible coupling 14 to provide additional power to the diesel engine output shaft 11. The fluid level in the fluid coupling and thus the torque transmitted from the motor 10 to the shaft 11 is controlled by a scoop tube 16 which is actuated hydraulically under electronic control to commence filling the coupling when the speed of the engine exceeds 82% of maximum speed at which the output of the alternator exceeds the normal electrical requirements of the ship. The transmission may, as shown, drive the diesel engine crank-shaft or may alternatively be connected to any shaft between the engine and propellor. In Fig. 5 (not shown) the diesel engine drives through a friction clutch, step-up gear box and scoop trimmed fluid coupling an alternator which provides the ships electrical requirements when the engine speed exceeds 85% of maximum speed.
Patent GB-399325-A (GB)
Title: An improved anti-skid device for pneumatic tyres
IPC: B60C27/00
Filed: 1932-10-24
Abstract: 399,325. Wheel tyres. COENNING, E., 18, Herkulesstrasse, Cassel, Germany. Oct. 24, 1932, No. 29738. Convention date, Dec. 22, 1931. [Class 144 (ii).] The tread surface of a tyre cover, or a separate detachable band, is moulded with several rows of projecting suction-cups 2, the cavities tapering to an apex at the bottom of each cup. In the case of a separate tread band, the edges may be fitted with double retaining wires 4 the looped ends of which are connected by hooks 7.
Patent GB-429733-A (GB)
Title: Improvements in upwardly swelling fishing nets
IPC: A01K73/02
Filed: 1934-10-17
Abstract: 429,733. Trawling. DAHL, O., and BLACK, W. F., 29, Quai Valin, La Rochelle, Charente-InfÚrieure, France. Oct. 17, 1934, No. 29750. Convention date, March 23. [Class 48] The rear pocket of a bellyless upwardly swelling trawl net comprises two or more superposed portions. The top sheet of the upper portion operates at the level of the apex of the head rope and the bottom sheet of the lower portion remains in contact with the ground. In one form of the invention, the ground rope H, J, J<1>, H<1>, Fig. 3, takes the traction force and side cables N, N<1> are connected to the seam G, F<1>, G<1> joining the upper and lower pocket portions. In a second form, the side cables N, N<1> take the traction force and are connected to cones P, P<1> and danlenos G, G<1>. The traction is also taken by a rope R extending between the head rope and the seams G, F<1>, G<1>. Specification 409,643 is referred to.
Patent GB-273646-A (GB)
Title: Improvements in or relating to cranes for handling timber
IPC: B66C7/00
Filed: 1926-11-24
Abstract: 273,646. Sievers, A., and Gralle, H., (trading as Sievers & Co., A.). July 5. 1926. I Convention date]. Addition to 261,372. Drawings to Specification. Circular-saw machines.-The apparatus of the parent Specification is modified by carrying the saw and the hoisting-gear for the timber on separate trollys movable along the bridge ot the crane so as to provide a greater range of adjustment. The timber may be lifted and held for sawing by tongs mounted in a rigid guide on the trolly.