baber/WOPTO huggingface dataset:
Patent GB-790639-A (GB)
Title: Improvements in or relating to processes for making articles from bonded fibrous material
Inventor: POLLARD HAROLD JOHN
IPC: B29C70/48
Filed: 1955-02-01
Abstract: 790,639. Moulding resin-fibre articles. BRISTOL AIRCRAFT, Ltd. Jan. 13, 1956 [Feb. 1, 1955], No. 3004/55. Class 87(2). A curved shell is formed by placing layers of fibres, e.g., glass fibres or vegetable or animal fibres, or knitted fabrics between mould parts 20, 26, and then impregnating the fibres with a thermoplastic or thermosetting resin, preferably a polyester resin, by applying compressed air to a container 40 to force the resin through an opening in the mould part 26. The resin escapes through pipes 31 to which suction may be applied. At least one side of the mould is made of light permeable material, e.g., glass fibres and resin, and the mould is irradiated, e.g., by bulbs 51, to allow the course of the resin to be followed. To facilitate this the resin may contain fluorescent material. Some of the outlet holes are plugged, the plugged holes being changed during impregnation to alter the flow path of the resin. Alternatively, several inlets may be used or an outlet may be used as an inlet. The progress of the impregnation may also be followed by watching for air bubbles in transparent parts 53 of the pipes 31. The resin may be mixed with an accelerator or hardener or they may be previously incorporated in the fibre. The mould parts may be formed by applying a parting layer, e.g., wax, to a plaster model, Fig. 3, building up layers 18 of woven glass fibre impregnated with polyester resin on the model to the thickness of the desired shell, setting the resin, applying a parting agent to the layer 18, applying a layer 20 of woven glass fibre impregnated with resin, setting the layer, removing the plaster model and applying a similar layer to the other side of the layer 18. The layer 18 is then removed. Strengthening ribs 24 may be provided on the layer 20. Outlet and inlet holes' may be drilled in the layer 20. A boss may be formed in the layer 26 where an inlet is to be formed.
Patent GB-310784-A (GB)
Title: Improvements relating to the manufacture of basic derivatives of anthraquinone
IPC: C09B1/20
Filed: 1928-01-31
Abstract: 310,784. British Celanese, Ltd., Hall, J., Olpin, H. C., Reeves, G., and Kirk, E. W. Jan. 31, 1928. Basic derivatives of anthraquinone are obtained by treating leuco-oxyanthraquinones or anthranols with ammonia or alkylamines at ordinary or increased pressure in the presence of caustic soda or other inorganic alkali followed by oxidation. In an example, 1:2:5: 8-tetraoxyanthraquinone is reduced with alkaline hydrosulphite, refluxed with monomethylamine (1.5 molecular equivalents) and the resulting leuco compound oxidized, without previous isolation, with sodium perborate. Cellulose acetate is dyed greenish blue. Other starting materials specified are quinizarin, 1 : 4- amino-oxyanthraquinone, 1:4: 5-trioxyanthraquinone, 1:4:5: 8-tetraoxyanthraquinone, diaminoanthrarufin and diaaminochrysazin.
Patent GB-690420-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J21/36
Filed: 1949-02-03
Abstract: 690,420. Thermionic valves. HIVAC, Ltd., GOULDING, F. A., and BREWSTER, H. G. Feb. 3, 1949, No. 3042/49. Class 39(i). In a valve similar to that of Specification 619,771, the electrodes and interposed mica spacers are secured together in a stack by tongues 28 on the outermost elements passing through slots 34 in transverse insulating side plates 33 and then bemg bent over inwardly so as to press the latter against the side edges of the electrode stack. The tongues may, as shown, be formed on the anodes 25, or on sheetlike members connected to the outer electrodes. The side plates are extended laterally so as to position the stack in the container 10, and the parts 30 of the anode are bent over and welded together to form a getter support. Specifications 655,567, 655.568 and 655.594 also are referred to.
Patent GB-631339-A (GB)
Title: Improvements in magnetrons
IPC: H01J23/213
Filed: 1947-01-31
Abstract: 631,339. Magnetrons. BRITISH THOMSON - HOUSTON CO., Ltd. Jan. 31, 1947, No. 3073. Convention date, May 12, 1945. [Class 39 (i)] [Also in Group XL (b)] In a magnetron having tuning discs at each end of the anode structure and an output loop in one of the openings in the anode, the tuning discs are shaped to increase the coupling to the output as the frequency is increased. The Figures show a magnetron with a copper envelope 1 which has radial vanes 5 which define the anode cavities. Alternate cavities are joined together by anode straps 7, 8 and there is an output loop 18 in one of them. Tuning discs 10, 11 may be moved up and down from outside the envelope by the screw cap 18 and bellows 15. The disc 10 is provided with a paddle-like extension 19 and the disc 11 has an opening 20 aligned with the coupling loop 18. A depending flange 21 surrounding the opening 20 and an extension 22 on the lower face of the disc 11 may also be provided, the extension 22 conforming to the space between the vanes. The paddle 19 and opening 20, together with members 21, 22 serve to alter the output coupling as the frequency is altered. The discs are connected to the metal envelope by flexible leads 23. The cathode 6 is supported bv tube 24 sealed to sleeve 25 which is sealed to a glass sleeve 26 supported from an upstanding sleeve 27 formed on the envelope. The heater lead 29 runs through the centre of tube 24 and is supported by insulator 30 and sealed at the end through a body of glass 31. Specification 644,852 is referred to.
Patent GB-1507281-A (GB)
Title: Observation port primarily for a door
IPC: G02B/
Filed: 1976-01-27
Abstract: 1507281 Spy-holes R R J SVENSSON 27 Jan 1976 [12 March 1975] 03140/76 Heading E1J An observation port for a door comprises a housing 1 with a faceted surface 3, 5, 6 and at least two tubular spy-hole devices 7, 8, 9, e.g. with eye-piece and object lens, at an angle. The housing may be secured to a backing plate 24 by bolts 21, 22. A second embodiment (Figs. 4, 5 not shown) comprises three viewing arrangements, the central one being movable.
Patent GB-725681-A (GB)
Title: Improvements in and relating to methods of providing aluminium with a flexible oxidecoating
IPC: C25D11/24
Filed: 1953-02-04
Abstract: 725,681. Flexible oxide coatings on aluminium. GENERAL ELECTRIC CO. Feb. 4, 1953 [Feb. 15, 1952], No. 3169/53. Class 41. A method of providing an aluminium surface with a flexible oxide coating consists in anodically oxidizing the surface in an aqueous solution of oxalic acid and thereafter immersing the oxide-coated surface in an aqueous solution of oxalic acid at a temperature of at least 80 ‹ C. The surface may be anodized in a solution of from 1 to 10 per cent oxalic acid for 1 to 3 minutes at a temperature up to 50‹ C. followed by immersion in a solution of from 2.5 to 10 per cent oxalic acid, preferably at a temperature between 84 and 95‹ C. for between 30 and 120 seconds. An aluminium wire may be passed continuously through a cleaning bath of ethyl alcohol and ethylene dichloride, wiped and dried and through an anodizing bath and then immediately into an oxalic acid bath. The wire may then be coated with a resin, such as a polymeric monochlortrifluorethylene resin. The wire may consist of a copper core covered with an aluminium or aluminium alloy surface coating.
Patent GB-937911-A (GB)
Title: Improvements connected with automatic or semi-automatic weighing apparatus
Inventor: ROUND DAVID STANLEY
IPC: G01G21/00
Filed: 1961-01-27
Abstract: 937,911. Compound lever weighing apparatus. W. & T. AVERY Ltd. April 18, 1962 [Jan. 27, 1961], No. 3188/61. Class 143. In a weighing apparatus (of the kind comprising a beam which is fulcrumed in a frame and has, pivotally mounted on the beam, a leg carrying a scale pan above the beam and connected to a stay to constitute an inverted Roberval type lever system), there are a coaxial pair of axles 6a, 6b (Fig. 2) fulcrumed in coaxial ball bearing races 10a, 10b held in circular collars 11a, 11b in the frame 11, and a second pair of axles 5a, 5b on the beam 4 pivotally mounted in ball-races 13a, 13b held in collars 14 on goods plate support leg 15 (Fig. 1), one of the axles being mounted on the beam so as to be capable of radial adjustment. In the embodiment described the position of axle 6a is adjustable, being mounted in a bore of a plate 8. having clearance apertures which receive set pins 9. The axle is radially adjusted before the plate is clamped by pins 9. Screw 7a clamps the axle 6a in the plate bore. The leg 15 is connected to an adjustable post 17 on the frame by a ribbon-type flexure stay 18 and is coupled to a dashpot 19. The beam 4 is connected to a tension weighing spring 20 and through rack 21 to an indicator spindle (not shown).
Patent GB-297631-A (GB)
Title: Accessories for filling petrol or the like tanks in automobiles or the like
IPC: B60K15/04
Filed: 1928-02-02
Abstract: 297,631. Christen, V. H. Feb. 2, 1928. Tanks.-A filling accessory for the tanks of automobiles &c. comprises a pan 1 for catching spilled petrol &c. having a central upwardly flanged opening 3 which fits over the rim of the filler opening of the tank to locate the pan. The body of the pan 1 is shaped to seat closely on the tank &c. 4 and is formed of sheet metal. An outer covering of cloth may be provided to prevent the pan from scratching the paintwork of the car &c. An internal indiarubber bush may be provided in the neck 3, and handles 15 for lifting the pan may be fitted. A cork or plug 20 for the neck 3 may be attached by a chain 21.
Patent GB-1493965-A (GB)
Title: Method for working metal and metal workpieces with lubricants thereon
IPC: C10N10/08
Filed: 1975-01-24
Abstract: 1493965 Lubricants LUBRIZOL CORP 24 Jan 1975 [4 Feb 1974 9 Sept 1974] 3265/75 Heading C5F Metals being worked are lubricated by the application of a composition comprising (A) an oil of lubricating viscosity, (B) an acyclic carboxylic acid containing 6 to 75 carbon atoms, or the anhydride or lithium salt of such an acid, and (C) a salt of the formula where M is a metal of Group I or of Group II or aluminium, tin, cobalt, lead, molybdenum, manganese, nickel or ammonium, each of R<SP>1</SP> and R<SP>2</SP> is a substantially hydrocarbon radical, each of X<SP>1</SP> and X<SP>2</SP> is oxygen or sulphur, and a and b are each 0 or each 1. "Substantially hydrocarbon" means having a predominantly hydrocarbon character, and does not exclude a minor proportion of other atoms, e.g. halogen, oxygen, nitrogen or sulphur. Preferably the acid (B) is a substituted succinic acid, and the salt (C) is a zinc dialkyl dithiophosphate, but long lists of substances suitable for all three components are given. The composition may also contain a chlorinated wax or other known additive. The working may be drawing.
Patent GB-1507011-A (GB)
Title: Colour television
IPC: H04N11/04
Filed: 1976-01-28
Abstract: 1507011 Colour television ROBERT BOSCH GmbH 28 Jan 1976 [4 Feb 1975] 03274/76 Heading H4F A method of transmitting the chrominance component of a colour television signal comprises transmitting the sum and difference of colour difference signals in alternate lines. As described with reference to a PAL signal the complete signal (FBAS) is fed to the positive terminal of a subtracting circuit and also to the inverting terminal via a one line delay. Available at the output of the subtracting circuit are U+V and U - V in alternate lines. These signals are subsequently demodulated and transmitted in digital form by a differential pulse code modulator. At the receiver U and V are retrieved by a comb filter comprising a one line delay, an adding and a subtracting circuit. Signal V is phase inverted each line and both are applied to a PAL coder, which also receives the luminance signal transmitted along another channel which reconstructs the original signal (FBAS).
Patent GB-1275033-A (GB)
Title: Selector boards
IPC: H01R24/58
Filed: 1971-01-27
Abstract: 1275033 Making selector boards SEALECTRO Ltd and S T DEAKIN 27 Jan 1971 3286/71 Heading B3A [Also in Division H2] A method of making an electrical selector board which comprises two crossing sets of rows of contact sockets includes disposing the strips 9 of one set in channels 6 of a board 1, disposing strips 13 of the other set on an array of pegs 18 on a platen head 17, the pegs 18 engaging tubular eyelets in the strips 13, inserting the pegs into holes 7 provided along the channels 6, forcing the array of pegs into the holes causing portions 11 of strips 9 to be pressed out to lock the strips and tabs 16 of strips 13 to be located in holes in ridges 4 to retain the strips 13 on the board 1, and subsequently removing the pegs from the holes.
Patent GB-1043391-A (GB)
Title: Rotary piston internal combustion engine
IPC: F02B53/00
Filed: 1963-03-26
Abstract: 1,043,391. Rotary-piston internal combustion engines. R. BAR. March 26, 1963, No. 3338/63. Heading F1F. A rotary-piston I.C. engine comprises a housing 1, Fig. 1, having portions 1a, 1b whose inner surfaces are concentric and eccentric respectively with respect to the axis of a shaft 3 on which is mounted for rotation a rotor 2 having radially sliding spring-urged slides 7 dividing the space between the inner periphery of the housing and the outer periphery of the rotor into working chambers 10, 11, 12. The rotor 2 which is formed with a hub 5 and radial webs 4 extending to a rim 6 to carry the slides, includes projecting peripheral portions 25 of less width than the rim 6. These portions 25 from the trailing slide to the leading slide of a chamber progressively decrease in radial depth. Gaseous fuel mixture is admitted through an inlet port 18, Fig. 2 (not shown) in the housing end wall 19 which co-operates with arcuate ports 13, 14, 15 in the rotor hub 4, to be partially compressed in radial ducts 16 having poppet or check valves 17 before entering a working chamber in which the phases of induction, compression, ignition, expansion and exhaust are carried out. To facilitate sealing ring-like projections 27 on the housing cooperate with complementary recesses 28 in the rotor.
Patent GB-700794-A (GB)
Title: Improvements in or relating to method and apparatus for agglomerating finely dividedmineral material
IPC: C22B1/24
Filed: 1952-02-08
Abstract: 700,794. Treating ores. ERIE MINING CO. Feb. 8. 1952 [Feb. 16, 1951], No. 3388/52. Class 82 (1) In a method of agglomerating moist finely divided ore fines into balls by causing loose fines with or without returned under-sized balls to roll upon a compacted layer of fines lining the interior of an inclined and rotating drum, the thickness of the compacted layer is continuously limited and the layer kept in a state of controlled roughness by a doctoring means which acts simultaneously at a number of small areas spaced axially along the length of the drum and in such a manner that the entire area of the compacted layer is eventually doctored. An apparatus for carying out the above method comprises, Figs. 1 and 2, an inclined steel drum 10 mounted on rollers 14, 15 and rotated by a motor 22 via a chain 23, the drum 10 being lined with a layer 47 of concrete or expanded metal and a dense layer of moist ore fines 48. The lower end of the drum enters a frustoconical trommel 25 which is arranged with its axis horizontal and is rotated by a motor 40 via a chain 41, the trommel consisting of a framework made up of lengths of angle bar 26 and bands 27, around the inside of which is wound a helix or round wire 28. Moist ore fines are fed into the upper end 10a of the drum and roll on the compacted fines layer 48 as the drum rotates, the so-formed balls passing down the drum and into the trommel 25. Undersized balls pass outward through the interstices in, the helical screen 28 and on to a conveyer 77 from whence they are returned via conveyers 78, 79 to the upper end 10a and fed in again with further moist ore fines, whilst correctly sized balls are discharged from the end 2'5b of the trommel on to a conveyer 81 for transport to the indurating furnace. The doctoring means for the layer 48 comprises a plurality of teeth. 51 projecting laterally from a bar 50 which is supported at its ends on wheels running in trackways 55. 68. The teeth, which have renewable hard metal carbide tips. are more closely spaced at the end 10a of the drum and the bar 50 is reciprocated bv a crank arm 61 journalled to a pin eccentrically mounted on a plate 63 which is rotated by a motor 66. The plate 63 has a plurality of pins thereon so that the stroke of the bar 50 may be varied. The bar and its supporting and reciprocating members may be moved transversely by adjusting screws 74 and the bar is preferably positioned so that the teeth act on the rising side of the drum.
Patent GB-453049-A (GB)
Title: Improvements in or relating to ventilating plant
IPC: E21F1/00
Filed: 1935-02-02
Abstract: 453,049. Screw fans. WALKER BROS. (WIGAN), Ltd., Pagefield Iron Works, Wigan, and COLQUHOUN, C. B. H., 10, Hervey Road, Blackheath, London. Feb. 2, 1935, No. 3426. [Class 110 (i)] [See also Groups X and XXVIII] Screw fans are mounted on a carriage in an air duct so that one fan can be replaced by another. In one form the carriage comprises a turntable 10 with two fan casings 27, 28. At the periphery of the turntable are frustoconical rollers 17 which run on a bevelled track 18. Renewable hardened portions of the track are provided in the regions where the carriage is at rest. The turntable is driven by a motor 40 which actuates a pinion in engagement with the toothed rim 42. An electromagnetic plunger retains the turntable in the operative positions. Sealing between a fan casing and the sections of the air duct is effected bv a spring pressed ring 53, Fig. 10, made of segments. The edge of the ring is bevelled to facilitate entry of the casing between the sections. The section of the air duct and the fan casing carry complementary streamlined fairing elements which form a complete fairing when the fan is in position. A ventilator housing 70, Fig. 11, contains an exhaust shaft 71 with an outlet 72 and an intake shaft 73, 74. Fans are mounted in casings 77, 78 on a carriage at each shaft so that one fan can be replaced by another. In a second form, the carriage is mounted on a straight track and moves to and fro. Movement of the carriage is controlled by a system of press-button switches and photo-electric cells whereby the carriage is automatically brought to rest in its correct position, two groups of projector lamps, each comprising three lamps at different radial distances or at different levels being mounted at appropriate positions on the carriage and as they come opposite corresponding cells on the frame the motor is slowed down, stopped and if necessary reversed before the locking plunger, which is raised on initiation of the movement, is finally shot home. Provision is made for stopping the carriage should the lamps fail and a switch enabling the motor to be reversed by manual intervention is provided. Alternatively, mechanical trip gear may be used.
Patent GB-538630-A (GB)
Title: Arrangement for automatic or manual selectivity or tuning control of electric oscillatory circuits
IPC: H03J7/14
Filed: 1940-02-23
Abstract: 538,630. Wireless receiving apparatus. KRAMOLIN, L. L. DE. Feb. 23, 1940, No. 3428. Convention date, Feb. 25, 1939. Addition to 510,862. [Class 40 (v)] [Also in Group XXXV] Tuning or selectivity control is effected by an inductance which is varied by an applied current or voltage which is amplified by a valve used in the apparatus for a different purpose, the regulating means being connected in the cathode lead. The Figure shows an arrangement in which automatic tuning correction is effected by a magnet in the cathode lead of the output valve VI. The control is by an error detector valve 1 which controls the bias applied to the valve V1. The signals are applied through condenser C3 and volume control is effected by the contact S. Selectivity control may control the received band width in any known manner and may be in accordance with the noise level e.g. by filtering the 9-10 Kc./sec. resonance from the detector circuit. Specifications 449,240, 451,097,. [Group XXXVI], 455,190, 470,945, 472,710, 473,384, 481,062, 485,285, 490,508, 510,862, 510,941; 511,031, [Group XXXV], and 513,626 are referred to.
Patent GB-720079-A (GB)
Title: Improvements in and relating to aircraft gun installations
IPC: F41G9/00
Filed: 1948-02-06
Abstract: 720,079. Aircraft guns. BOULTON PAUL AIRCRAFT, Ltd., and NORTH, J. D. Jan. 13, 1949 [Feb. 6, 1948], No. 3498/48. Class 92(2). In an aircraft gun installation the gun or guns are moveable relative to the aircraft over a limited angle or angles, e.g. 5 degrees to 10 degrees, by means of a servo mechanism controlled jointly by means for measuring the angular displacement and/or time derivative thereof of the control column, and means for measuring the angular displacement of the aircraft and/or time derivation thereof, so that the gun or guns are moved relative to the aircraft in accordance with the difference between the desired and actual angular motion of the aircraft, means also being provided to return the gun or guns to zero displacement. In the Figure an electrical signal fn(q) is derived from the measured displacement q of the control column 1, the signal being fed via a servo system 2 to move a control surface 3. A signal fn(°<SP>1</SP>), derived from the actual displacement of the craft obtainable from the gyro unit 6, is fed with fn(q) into a servo system 4 by which the gun 5 is moved in accordance with the difference between the aircraft displacement and the control column displacement or any time derivation thereof. A function of this difference is also fed to the servo system 2 to move the craft so that the gun is again at zero displacement. Excessive overshooting is prevented by feeding the signal fn(°<SP>1</SP>) into the servo system 2 Overstrain of the aircraft structure may be prevented by feeding the gyro unit 6 with a signal from an airspeed motor and/or from an accelerometer to limit the speed and/or acceleration of the aircraft.
Patent GB-873510-A (GB)
Title: Improvements in or relating to cavity-resonator magnetrons
Inventor: VAUGHAN JAMES RODNEY MITCHELL
IPC: H01J23/36
Filed: 1957-02-01
Abstract: 873,510. Magnetrons. ELECTRIC- & MUSICAL INDUSTRIES Ltd. Nov. 21, 1957 [Feb. 1, 1957], No. 3498/57. Class 39(1). In a cavity resonator magnetron, the body portion 7, Fig. 2, is made from a single cylindrical copper block and has a transverse circular bore 8 into which a separate cylindrical resonator portion is fitted. Body portion 7 has a waveguide output channel 14 disposed along its axis and communicating with bore 8. Two side walls of channel 14 are chamfered as at 17 to avoid sparking and the boss 15 is provided with an annular recess 16 forming a high frequency choke. The resonator system, shown in plan in Fig. 6, comprises a copper cylinder 18, recessed at both ends as at 19, with an axial bore 20 and cavities 21. The output is removed by a slot 22, preferably oblique to the axis of cylinder 18, which constitutes a transformer formed integrally with the resonator portion and which couples the resonator system to the waveguide channel 14. The ends of the slot 22 may be enlarged. The assembled magnetron is shown in Fig. 7, one end of block 18 rests against shoulder 9, the oblique output slot 22 shown in Fig. 6. being closed at one end by this shoulder and at the other by a copper ring 23. At steel sleeve 24 is brazed into bore 8, a cathode 25 is inserted in bore 20, and the magnet pole piece structures 12, 13 are inserted in the countersunk portions of block 7. Sleeve 24 and cylinder 26 together constitute the pole piece 13. The magnetron may be evacuated by way of a bore 27 in the cylinder 26. The waveguide output channel is sealed by a window 28 in a cup 29 which is brazed to a sleeve 30 which in turn is brazed to the boss 15.