baber/WOPTO huggingface dataset:
Patent GB-974856-A (GB)
Title: Process for separating paraffin wax from hydrocarbon oils by treatment with urea
IPC: C10G31/06
Filed: 1961-01-30
Abstract: In the dewaxing of hydrocarbon oils by urea adduction, the formation of lumpy agglomerates of the adduct is avoided by using for the adduct formation a saturated solution in which the weight ratio of saturated urea solution to solid urea is 1-1.2: 1.  The process may be adapted for continuous operation, the adduct formation being suitably carried out in the presence of methylene chloride; after some time, the urea solution is regenerated by filtering through active carbon, diluting with an equal weight of water, and then evaporating the resulting solution to the required concentration.
Patent GB-233526-A (GB)
Title: Improvements in containers or boxes for thermionic valves, incandescent electric lamps and the like
IPC: B65D85/42
Filed: 1924-05-21
Abstract: 233,526. Elliott, W. May 21, 1924. Contents, viewing and testing; fittings, internal. -To enable a thermionic valve contained in a sealed box to be tested, contact members accessible from the outside of the box and connected to or contacting the terminals of the valve are provided. The contact members may comprise flat strips g<1>, Fig. 2, which are exposed through apertures h<1> in the end of the box or may be formed of wire surrounding the terminals and brought to the outside of the box and wrapped round metal projections. Inspection openings i, preferably covered with transparent material, may be provided in the walls of the box and the valve may be positioned and prevented from rotating within the box by cup-shaped supports c, d which are apertured to receive the bulb and terminals of the valve.
Patent GB-685478-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
Inventor: NIXON JOHN ESMONDE ARTHUR
IPC: H04N5/16
Filed: 1950-05-18
Abstract: 685,478. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 4, 1951 [May 18, 1950], No. 12515/50. Class 40 (iii). A circuit arrangement for fixing the D.C. level in a television &c. system comprises two diodes, one, 5, connected between the grid 2 of an amplifying valve 3 and a source 7 of datum potential, and the other, 9, between the grid 2 and a point at which signals appear. in the same sense as at grid 2, the diodes being connected in opposite senses so that one is operative for current flow away from the grid and the other for current flow towards the grid. In the arrangement shown, the diode 9 is connected through a resistor 11 to the junction of a condenser 12 and a resistor 13 in the output circuit of a succeeding amplifier 14. With this arrangement, the diode 5 always conducts on the peak of the synchronizing pulses and clamps the signals to the datum level determined by the setting of potentiometer 7, even though the distortion of the waveform (due to absence of a stabilized D.C. level) may be so great that the synchronizing pulses, if diode 5 only were employed, would fail to cross the predetermined datum level to render this diode conducting. If the input signals are in the opposite sense to that shown at A, the connections of the diodes are inverted, Fig. 2 (not shown).
Patent GB-641920-A (GB)
Title: Improvements relating to combustion equipment for gas-turbine engines
Inventor: MORLEY FREDERICK WILLIAM WALTO
IPC: F23R3/08
Filed: 1948-05-06
Abstract: 641,920. Generating combustion products under pressure. ROLLS-ROYCE, Ltd. May 6, 1948, No. 12540. [Class 51(i)] In combustion chambers for gas turbines in which the one or more flame tubes are arranged in an air jacket which supply the secondary and tertiary air to the tubes through inclined annular passages,. the inclination of these passages increases with their distance from the inlet end of the flame tube. The combustion chamber shown, Fig. 1, comprises an air casing 12 enclosing a flame tube formed of a primary zone combustion chamber 17 and a number of cylindrical or frusto-conical sections 14, 15 and 16. Secondary air is introduced into the flame tube through an annular passage 23 and tertiary or dilution air through additional annular passages 24, 25. The passages 23, 24 and 25 are formed by the overlapping of the inlet and exit ends of the sections 14. 15, 16 and 17. The section 17 is formed with an in-turned lip 27, the sections 14, 15 with bell-mouthed inlet ends 28, 30, and inturned exit ends 29, 31, and the section 16 with a bellmouthed inlet 32. The sections 17, 14, 15 and 16 may be interconnected by deforming the walls as at 34, Fig. 1B, and welding the deformations together. In a modification the walls are interconnected by Z-bars locally welded to the surfaces of the sections. In another arrangement the passages 23, 24 and 25 are formed by cylindrical or conical sections to the inlet ends of which are attached conical members which extend inwardly and outwardly from the wall of the flametube. A combustion system having an annular flame tube is also described. Specification 543,918 is referred to.
Patent GB-129967-A (GB)
Title: Improved Means for Washing and Moistening Air in connection with Internal Combustion Engines.
IPC: F02M1/00
Filed: 1919-05-19
Abstract: 129,967. Ford & Son, H., (Assignees of Ford, H.). July 17, 1918, [Convention date]. Air, moistening and washing.-Apparatus for removing dust from and moistening the air supply of internal-combustion engines, more particularly for use on tractors, comprises a receptacle 1 containing water having an air guide 10 buoyantly supported on floats 13 so that air is drawn through the water in the receptacle a fixed distance below its surface. The air guide 10 carries a. deflector 14 and is rectangular in form and carries guides which engage fins 5 on the central air inlet 3. The outlet 16 is the full width of the cover and connected to the suction of the engine.
Patent GB-559759-A (GB)
Title: Improvements in or relating to pick-up crop lifting machines for agricultural purposes
IPC: A01D87/02
Filed: 1942-09-07
Abstract: 559,759. Harvesting cut-crops. HAWKEN, D. J. Sept. 7, 1942. Nos. 12604 and 14360. [Class 6 (iii)] A crop-lifting machine comprises a wheeled carriage 10, vertical supports 15, 24 for an inclined convey :r 18 the front and lower end of which extends close to the ground, lateral discharge means receiving from the elevator, and actuating means for vehicle and elevator. The elevator and the vertical supports are in hinged sections, facilitating folding for reducing height during transport. A triangular lateral frame 60, 61 is hinged to one side of the carriage and carries a frame 65 on which is pivoted one or a pair of drawbars, extending forwardly for attachment to a tractor and rearwardly for connection to a waggon receiving material from the transversely moving conveyer 34.
Patent GB-746927-A (GB)
Title: Improvements relating to the manufacture of glasses
Inventor: STANWORTH JOHN EDWIN
IPC: C03C3/23
Filed: 1954-04-30
Abstract: 746,927. Glass. BRITISH THOMSONHOUSTON CO., Ltd. April 30, 1954, No. 12645/54 Addition to 736,073. Class 56 The tellurite glasses of the parent Specification are made by melting the constituents in a container or crucible of, or lined with, gold.
Patent GB-126866-A (GB)
Title: Improvements in Supporting and Steering Devices for the Front Wheels of Motor Vessels or the like.
Inventor: LARSEN PEDER ANTON CHRISTIAN
IPC: B62D7/00
Filed: 1918-08-02
Abstract: 126,866. Larsen, P. A. C. June 25, 1918, [Convention date]. Deflectable axle-ends and intermediate connexions therefor.-The pivots of steering- wheels are vertical and located in the central plane of the wheel about 1-5 the wheel radius in front of the wheel axis. The wheel comprises a pair of dished plates d, e carried on an axle g mounted in a bearing c. The bearing c is pivoted at l to a fork k on the front axle. The bearings are connected by a rod n to which the operating rod p is linked.
Patent GB-1186717-A (GB)
Title: Photographic Emulsions
Inventor: JONES EVAN THOMAS
IPC: C09B23/10
Filed: 1967-03-17
Abstract: 1,186,717. Direct positive emulsions. EASTMAN KODAK CO. March 17, 1967 [Feb.24, 1967], No.12688/67. Heading G2C. The speed of direct positive emulsions comprising either (a) fogged silver halide grains having adsorbed on their surface an electron acceptor or (b) fogged covered grain silver halide emulsions as described in Specification 1, 151, 781, the total silver halide content of which grains is at least 50 mole per cent bromide, is increased by adding to the emulsion a water-soluble iodide. Specified iodides are ammonium, K, Li, Na, Cd or Sr iodide. The emulsions may contain electron acceptors as described in Specifications 1, 186, 714, 1, 186, 715 and 1,186, 716, electron acceptors and blue speed increasing compounds as described in Specification 1,186, 718, and fogging agents as described in Specification 1, 186, 713 and the emulsions may be of the type described in Specifications 1, 186, 711 and 1,186,712.
Patent GB-574012-A (GB)
Title: A new or improved moulding powder
IPC: C08L21/00
Filed: 1941-10-01
Abstract: The moulding-powder described in the parent Specification is prepared by the use of liquid blood in place of blood albumen.
Patent GB-1188771-A (GB)
Title: X-Y Plotting Devices.
Inventor: HENDERSON KENNETH JAMES
IPC: G01D15/24
Filed: 1968-03-15
Abstract: 1,188,771. Recording apparatus. SOUTHERN INSTRUMENTS Ltd. Jan. 15, 1969 [March 15, 1968], No. 12756/68. Heading G1J. In an x-y plotter comprising a writing head 1 movable over a recording surface 2 to trace a curve 3 representing a function relating two input signals x, y four wires or tapes 4, 5, 7, 6 extend from the head 1 to reels 8 driven by pairs of motors 9, 10 and 11, 12 energized respectively by the input signals x, y. The tapes may be flexible steel strips of arcuate cross-section and one motor (9 and 11) of each pair may be replaced by a tensioning device. Single or multi-turn potentiometers associated with the motors 10, 12 serve as pick-offs to indicate the instantaneous positions of the writing head 1. In an alternative embodiment each pair of tapes may be replaced by an endless band driven by at least one servomotor and pulleys with tension springs permit movement of the writing head 1.
Patent GB-528205-A (GB)
Title: Improvements in hot air engines
IPC: F02G1/043
Filed: 1939-04-29
Abstract: 528,205. Hot-air engines. WATSON, T. April 29, 1939, No. 12896. [Class 7 (i)] In a hot-air engine suitable for driving a fan, in which the working medium is caused to oscillate between cylinder ends, maintained at a difference of temperature, by means of a displacer d disposed in the same cylinder b as a pressure-changing piston c, the displacer is connected to the power shaft e by a rod f passing through the centre of the piston c and the latter is connected to the shaft e by a resilient connecting-rod h eccentric to the piston. The rod h is formed to take a ball bearing i surrounding the crank or equivalent on the shaft e, on which a ventilating fan may be mounted. The cylinder b may be provided with cooling ribs and is heated at the lower end by a burner k or other means.
Patent GB-587169-A (GB)
Title: Improvements in switch contacts
IPC: H01H1/04
Filed: 1944-07-06
Abstract: 587,169. Contacts. LANDIS & GYR SOC. ANON. July 6, 1944, No. 12949. Convention date, July 9, 1943. [Class 38 (v)] Tendency to weld is avoided by making the co-operating contacts of automatic circuitbreakers of copper and silver respectively.
Patent GB-999833-A (GB)
Title: Improvements in or relating to drum closures
Inventor: WALDE STEPHEN STEWART
IPC: B65D39/08
Filed: 1963-04-02
Abstract: 999,833. Closures for lined containers. VICTOR BLAGDEN (MANCHESTER) Ltd. June 1, 1964 [April 2, 1963], No. 13071/63. Headings B8D and B8T. A boss 18 of a polythene inner drum 17 projects through a bung-opening in the top 14 of an outer steel drum 11, and a seal between the boss and the opening provided by a screwthreaded ring 22, of plastics material, a rubber gasket 29, which seats on the ring 22 and on a seat 26 on the boss, and a screw-threaded ring 28 which forces the gasket against its seats. The boss 18 receives a polythene bung 20 which bears on a rubber gasket 21, the bung having a screw-threaded aperture 34 to receive a stopper. A metallic cap 31 is screwed on to the ring 22 which has recesses 24 on its underside at circumferentially spaced positions to receive raised portions 23 on the top 14 of the drum to prevent its rotation. The drum may have several such closure structures, one of which may project from the drum side wall. The drum 11 is cyclindrical with circumferential stiffening corrugations and with seamed-on ends.
Patent GB-1502671-A (GB)
Title: Oscillator
IPC: H03B5/32
Filed: 1975-03-27
Abstract: 1502671 FET crystal oscillators EBAUCHES SA 27 March 1975 [1 April 1974] 13095/75 Heading H3T An oscillator comprises a piezoelectric resonator Q, Fig. 1 maintained by two IGFETs T 1 , T 2  in series across a D.C. source having a capacitive voltage divider C 1 , C 2  connected between the gate of T 1  and the source of T 2  and its tap connected to the common point c between the IGFETs. T 1  and T 2  supply the maintaining current in alternate half cycles, the other one being off. The gates of T 1  and T 2  are biased from positive and negative sources Voa and Vob respectively. In an integrated circuit embodying the invention, Fig. 6, two such circuits T 1 , T 2 ; T 1 <SP>1</SP>, T 2 <SP>1</SP>, are provided in a symmetrical driving arrangement, and the circuitry towards the top of Fig. 6 is provided to derive both positive and negative bias supplies from the one cell P c  by using the alternating control voltages of the transistors. The transistors T 6 , T 7 , T 8 , T 6 <SP>1</SP>, T 7 <SP>1</SP>, T 8 <SP>1</SP> determine the potential of the reference level M relative to the substrate O. The biasing voltages for the transistors T 1 , T 2 , T 1 <SP>1</SP>, T 2 <SP>1</SP> are derived from the oscillating signals at d and d<SP>1</SP> which are fractions of the output signals at a and a<SP>1</SP> determined by voltage dividers C 3 , C 4 , C 3 <SP>1</SP>, C 4 <SP>1</SP>. A mathematical analysis of the biasing arrangement is given.
Patent GB-651488-A (GB)
Title: Thermostatic control for chemical plant
IPC: C10J3/72
Filed: 1948-05-13
Abstract: 651,488. Automatic temperature control systems. BALFOUR & CO., Ltd., H., BURNS, W. L., and BUREAU, A. C. May 13, 1948, No. 13135. [Class 38 (iv)] [Also in Group XXIX] Apparatus for controlling the temperature of a reaction chamber or combustion chamber in response to the average temperature throughout the chamber comprise heat-sensitive elements disposed within or adjacent to a mass of metal embedded in a wall of heat-resisting material surrounding the reaction zone. As shown in Fig. 1 the walls 5 of a furnace having a combustion chamber 6 have embedded in them a thick metal plate 3 in indirect heat contact with the combustion chamber 6. In contact with the plate 3 are a number of thermocouples having hot junctions 1 and cold junctions 2 arranged round and down the side of the furnace. The output of the thermocouple is used to control the rate of combustion in the furnace by operating air or fuel valves. In one embodiment (Fig. 4, not shown), the output of the thermocouple is applied to a millivoltmeter having a pointer and chopper bar, which are used to control a reversible motor operating the valve. In a further embodiment, the output of the thermocouples is applied to relays (Figs. 5, 8, not shown) for operating the reversible motor. In another embodiment the heatsensitive element is a bellows operating fluidpressure mechanism (see Group XXIX).
Patent GB-1331916-A (GB)
Title: Nut and cage systems
IPC: F16B37/04
Filed: 1972-03-21
Abstract: 1331916 Caged nuts COMPAGNIE DE MATERIEL ET D'EQUIPEMENTS TECHNIQUES 21 March 1972 [5 May 1971] 13190/72 Addition to 1265583 Heading F2H A nut 1 is anchored to a panel 5 by a plastics cage comprising a thin-walled tubular body 6 having longitudinal openings 7 through which project radial lugs 2 on the nut to allow axial but not angular movement of the nut in the cage, the tubular body 6 being open at one end and having a continuous external and internal flange 10 at the other end, the internal flange defining a central hole 21 having a diameter equal to that of the nut bore. Lugs 11 under the external flange co-operate with slots 4 extending from the hole 3 in the panel 5 to prevent rotation of the cage. Preferably the external flange has a sealing lip 19 and the internal flange has a lip (23) (Fig. 3, not shown) at its inner edge. The diameter D of the hole 21 equals the root diameter of the thread on a screw 14 which co-operates with the nut 1, to resist loosening of the screw.
Patent GB-132019-A (GB)
IPC: H05B31/00
Abstract: 132,019. Wrench, H. H., and Engelke, W. Sept. 2, 1918. Arc lamps.-Connexion between each terminal and a carbon-holder is made by a number of strips or the like pivoted together to allow of movement of the carbons in a plane and sufficiently elastic, or provided with an additional joint or the like, to allow small adjustments at right-angles to that plane. The strips need not be covered with insulating material. As shown, three flat strips 1-3 of copper or the like are pivoted together, one strip 1 being rigidly secured to the terminal and another 3 pivoted to the carbonholder. Spring washers may be provided at the pivots to ensure good contact. The extra joint may be provided by replacing the strip 1 by two strips, the ends of which are bent at right-angles and pivoted together. The connector for the upper carbon may be situated at the opposite side of the supports.
Patent GB-1024846-A (GB)
Title: Improvements in or relating to valve timing devices
IPC: F02B67/06
Filed: 1963-04-03
Abstract: 1,024,846. I.C. engine valve gear. F. FORNELLI. April 3, 1963 [Dec. 27, 1962], No. 13267/63. Heading F1B. In a device for adjusting I.C. engine valve timing gear in dependence on engine speed a first chain wheel 9 acted on by a piston/cylinder device 13 and a second chain wheel supported resiliently on a stem 10 engage opposite sections of the valve gear driving chain 5. Chain wheels 6, 7 driving valve camshafts are driven from the crankshaft by chain wheel 1, chain 2, intermediate chain wheels 3, 4 and chain 5. Cylinder 13 is connected to the engine lubrication system so that with increasing engine speed chain wheel 9 acts to lengthen the section of chain 5 between chain wheels 7 and 4 whilst tie-rod 12 moves chain wheel 8 against spring 14 to allow corresponding shortening of the opposite section of chain 5. In modifications a viscosity-sensitive valve is arranged in the oil circuit, the oil circuit is independent of the main circuit, tie rod 12 is omitted or spring 14 is replaced by a compressed gas cylinder. In another embodiment the device is applied to a single camshaft which acts through tappets and rocker arms on the valve stems. In a further embodiment two cam-shafts are driven by independent chains, a single piston/ cylinder device acts through two separate chain wheels on one section of each chain, whilst independent resiliently mounted chain wheels act on the opposite section of each chain.
Patent GB-133002-A (GB)
IPC: B63H23/00
Abstract: 133,002. Jogensen, O. E. May 20, 1919. Lighting systems; systems depending on the use of two or more machines.-On a Dieselengine-driven ship in which the lights, pumps, winches, &c. are supplied from an auxiliary set consisting of a Diesel engine and dynamo, the ship's lanterns, engine-room lights, and any other device which must be run to ensure the safety of the ship are supplied from a motor-generator set having an associated fly-wheel, the motor being connected to the auxiliary set. The flywheel stores sufficient energy to enable the motorgenerator set to supply the lanterns &c. if the main auxiliary should stop, until a spare enginedynamo set can be started up. The motor generator supplies at a lower voltage than the auxiliary set.
Patent GB-110563-A (GB)
Title: Improvements in Metal Milling Machines.
Inventor: WADKIN JOSEPH WILLIAM
IPC: B23C1/12
Filed: 1916-09-20
Abstract: 110,563. Wadkin, J. W. Sept. 20, 1916. Milling-machines having a fixed horizontal cutter-spindle Dare provided with an additional spindle M universally angularly adjustable. The drive is taken from the main spindle and passes by the shaft F through the arm that supports the outboard bearing. Graduations are provided on the parts of the gear housing to facilitate setting and a reversing-gear may be included. The shaft F is connected to the cutter spindle M by bevel-gears including the double wheel E. Worm, helical, or chain gearing may be employed. The outer end of the shaft F may be conical in a part G of the steady-rest for the horizontal spindle D.
Patent GB-763009-A (GB)
Title: Improvements in photo-electric relay apparatus
Inventor: WATTS BERHARD NELSON
IPC: H05B37/02
Filed: 1954-05-07
Abstract: 763,009. Semi-conductor devices. BRITISH THOMSON-HOUSTON CO., Ltd. April 29, 1955 [May 7, 1954], No. 13411/54. Class 37. [Also in Group XL (b)] The output of a photo-electric cell 1 is amplified by a transistor 4 which is also subject to the same light as that incident on the cell thus increasing the amplification of the transistor. The photo-cell 2 is of cadmium sulphide selenite or telluride although mercury sulphide or selenite may be used while the transistor is of germanium. In the arrangement shown in Fig. 3, the photo-cell 2 is a cadmium-sulphide crystal and is incorporated in a window 19 mounted in a recess in the top of casing 17 in which it is sealed by a mass of solder glass 25. One of the conductors attached to the cell is connected to conductive casing 26 while the other extends to the exterior of the window for connection to the external circuit. Inside the conducting housing is a germanium wafer 20 attached to the base by a low melting-point solder. Conductors 22, 23 extend through metal to glass seals 21 and engage the germanium wafer at their parted ends. The wafer together with the soldered base contact and pointed leads constitutes the transistor and is subject to the illumination. Specification 675,594, [Group XXIII], is referred to.
Patent GB-720570-A (GB)
Title: Improvements in or relating to drying plants for small coal
IPC: C10L5/22
Filed: 1952-05-27
Abstract: 720,570. Drying coal. COAL INDUSTRY (PATENTS), Ltd., and GROUNDS, A. May 26, 1953 [May 27, 1952], No. 13414/52. Class 34 (2). Most small coal is sprayed with oil, before it is dried in a pneumatic drier, to agglomerate the coal dust. The oil may be heavy oil residue from'gear boxes or a residue from the distillation of naphthalene or anthracene oil..
Patent GB-645965-A (GB)
Title: Improvements in or relating to trithioacetals
Inventor: DOYLE FRANK PETER
Filed: 1948-05-19
Abstract: Trithioacetals of one of the isomeric general formul <FORM:0645965/IV (b)/1> and <FORM:0645965/IV (b)/2> wherein X is alkyl or aryl and R1 is alkyl or aralkyl are prepared by reacting an aldehyde of the general formula X-CO-CH2-CHO or a tautomer thereof, or a salt of such aldehyde, with an alkyl or aralkyl mercaptan.  The reaction may be effected in the presence of a strong acid, e.g. hydrochloric, sulphuric, or phosphoric acid, and of an inert diluent, e.g. diethyl ether.  o -Formylacetone trithioacetal is prepared by passing dry HCl gas into sodio formyl acetone covered with ethyl mercaptan and dry ether.  o -Formylacetophenone trithioacetal is similarly prepared. Specifications 645,966 and 645,968, [Group IV (c)], are referred to.
Patent GB-528408-A (GB)
Title: Improvements in or relating to rotary engines and hydraulic power transmission
IPC: F16H39/02
Filed: 1939-05-06
Abstract: 528,408. Rotary engines. RAYER, F. H., and BETHELL, G. R. May 6, 1939, No. 13546. [Class 110 (ii)] A rotor a having three vanes d cooperates with two rotary abutments g rotating at three times the speed of the rotor. Inlet and exhaust ports k, l are provided in the side-walls of the chamber and these are covered during parts of the working strokes by arcuate flanges. The flanges m covering the inlet ports extend forwardly from the vanes and the flanges n covering the exhaust ports extend rearwardly. Relief valves p byepass the ports.