baber/WOPTO huggingface dataset:
Patent GB-537784-A (GB)
Title: An amplifier for direct current and alternating voltages of low frequency
IPC: G01R17/02
Filed: 1939-12-30
Abstract: 537,784. Photo-electrically controlled thermionic amplifiers for electric measurements. STEGHART, F. L. Dec. 30, 1939, No. 33078. [Class 40(iii)] [Also in Group XXXVI] Relates to thermionic amplifiers of direct current and alternating current voltages of low frequency of the kind comprising one circuit containing a galvanometer 2 adapted to modulate light from a source 10 to a photo-electric cell 8 and a second circuit constituted by the anode circuit of a valve 5 the grid of which is controlled by the photo-electric cell, the two circuits having a common resistance 3 whereby anode current is fed back substantially to zeroise the galvanometer, so that a small voltage such as from a thermo-couple 1 in the first circuit can be measured by the anode current of the valve. According to the invention the valve is a gas filled triode fed from A.C. mains and controlled by the timing of the start of its discharge during the positive half wave, the feed-back being arranged to be as nearly in phase as possible to avoid oscillations. The timing depends on the magnitude and phase of the bias applied to the grid. The phase of the feed back is preserved by having no smoothing across the resistance 3, a smoothing arrangement of choke 14, resistance 15 and condenser 13 being provided for the anode current after it has passed .the resistance 3. The smoothed anode current serves to operate a recorder 6 and a meter 7. As shown, gratings 11, 12 are provided to increase the sensitiveness of the optical system, the photo-electric cell and the valve are fed from secondaries of a mains transformer 4, the cell 8 is arranged as shown with a condenser 9 in the grid circuit of the valve, and a thermal delay switch 16 is provided to prevent anode current before the cathode is hot. In a more elaborate circuit, Fig. 2 (not shown) various accessory features are provided. Anti-vibration devices may be provided for the photo-electric galvanometer apparatus, and ventilation may be provided to remove the heat generated in the valve and in the transformer.
Patent GB-1094194-A (GB)
Title: Improvements in or relating to irises
Inventor: KING GEOFFREY
IPC: H04N9/04
Filed: 1964-08-14
Abstract: 1,094,194. Colour television. MARCONI CO. Ltd. June 15, 1965 [Aug. 14, 1964], No. 33148/64. Heading H4F. [Also in Division G2] The colour television arrangement of Specification 1,094,193 is fitted with an iris (see Division G2) wherein the opening is defined by a plurality of coplanar blades (e.g. of triangular shape, each of which has an edge which slides along an adjacent edge of adjacent blade; the surfaces of the blades are of reflecting glass so that the incident light beam is split into two beams, one of which passes through the iris into a luminance camera, the other being reflected by the iris and directed into branch paths each of which leads to a different colour camera. The ratio of the effective aperture of the emergent and reflected beams may be held constant by putting a further aperture in the path of the reflected beam, which is gangcontrolled with the first aperture. The gangcontrol is preferably fitted with a manual override so that in failing light the iris controlling the aperture of the emergent light may be progressively opened so that the light passed to the colour camera is reduced compared with that to the luminance tube and the picture produced on a television receiver changes, as the light fails, from full colour to black and white.
Patent GB-292030-A (GB)
Title: Improvements in adjustable spanners, wrenches, pipe grips and pipe cutters
IPC: B25B13/16
Filed: 1927-12-08
Abstract: 292,030. Cleaver, A., and Jackson & Son,. Ltd., C. Dec. 8, 1927. Pipe cutters.-In a wrench or pipe cutter of the kind comprising a body carrying a fixed jaw and a central screwed stem carrying the movable jaw and adjusted by a cylindrical nut member rotatably mounted in a tubular portion of the body part, the cylindrical nut member is held against longitudinal movement by local indentations in the wall of the body part engaging an annular recess in the nut member. The screwed stem 5 of the movable jaw member 4 which slides within the body 1 carrying the fixed jaw 2 is engaged by the reduced forward part 12 of the adjusting member 6, the cylindrical part 12 being held against longitudinal movement in the tubular portion 13 of the body 1 by small projections 15 pressed in the wall of the tubular body part so as to engage the annular recess 14 in the part 12.
Patent GB-1320201-A (GB)
Title: Apex seals for rotary piston engines
IPC: C22C1/10
Filed: 1970-07-08
Abstract: 1320201 Carbide bonded carbon TOYO KOGYO KK and NIPPON CARBON KK 8 July 1970 [15 July 1969] 33234/70 Heading C1A [Also in Divisions B3 F1 and F2] An apex seal member for a rotary piston engine has a structure which comprises carbon particles and aluminium or an aluminium alloy, wherein individual carbon particles are dispersed in the aluminium or the aluminium alloy and are bonded thereto by a layer of aluminium carbide. The carbon may be present in an amount of 40 to 80% by volume, and the alloy may contain 11À0 to 13À0% by weight of silicon. The carbon particles may be finer then 100 US mesh. The carbon used for the seal may be obtained from anthracite, coke, coking coal, or graft polymerized coke, i.e. carbon powder which has been subjected to a graft polymerization treatment with, for example, polyacrylonitrile, by calcining the source at more than 800‹ C. The seal member may be prepared by packing the carbon particles of selected size into a vessel comprising aluminium or an alloy of aluminium, immersing the packed vessel in a bath of molten Al or alloy so as to impregnate the carbon, lifting the impregnated mass from the bath, cooling it and shaping into the desired shape.
Patent GB-664697-A (GB)
Title: Machine for lifting root crops
IPC: A01D25/02
Filed: 1948-12-24
Abstract: 664,697. Digging root-crops. KIND, P. J. March 22, 1950 [Dec. 24, 1948], No. 33328/48. Class 6(iii) A root-crop harvester comprises two juxtaposed, inclined shares 34 preceded by two discs 31 penetrating into the ground to a greater depth than the shares, so that a band of earth and soil is lifted on to an inclined, endless conveyer 16, The conveyer has side-walls 48 to which are fixed arms 14 and 50, together adjustably supporting a frame 36 carrying the shares 34. The arms 14 extend forwardly and upwardly, and carry a quadrant 19 and lever 20 linked to a frame 10, 11, which is supported on wheels 12, and pivoted at 13 to the arms 14 the discs 31 being secured to the inner sides of the wheels. Movement of the frame 10 and 11 and wheels 12 relatively to the conveyer is effected by the lever 20. The space between the share and conveyer is closed by bars 41. Soil falls through the conveyer mesh and the cleaning action is assisted by trailing chains 46.
Patent GB-1291051-A (GB)
Title: Apparatus for simulating the pressure and temperature of explosions
IPC: G01N3/30
Filed: 1965-08-04
Abstract: 1291051 Simulating explosions NITROCHEMIE GmbH 4 Aug 1965 [19 Sept 1964] 33457/65 Heading F3A [Also in Division G1] Apparatus for simulating the pressure and temperature of an explosion, particularly of a nuclear bomb explosion, ecomprises a tubular chamber open at both ends and containing a propellant grain, e.g. a conventional solventless nitrocellulose-nitroglycerin type grain, at least one baffle plate, and igniting means located at equal distances from the ends of the chamber. In one particular apparatus there is a grating faced by a baffle plate and adjoining a Lavel nozzle at each end of the chamber. The baffle plates may, however, be located in the nozzle throats or even in front of the nozzles, and may consist of a plastic, e.g. polyethylene, or of sheet metal, e.g. copper. Ignition is preferably effected electrically with the aid of an initiating charge or by means of a detonating fuze cord. The apparatus is intended for testing the resistance of protective devices, such as shelters, shelter doors and ceilings. By suitable bunching of a number of such chambers, surfaces of a considerable size can be exposed. The duration of the pressure wave produced is between a half and one second which makes the device particularly suitable for simulating nuclear bomb explosions.
Patent GB-366157-A (GB)
Title: Improvements in drag or tension devices for yarn winding and like machines
IPC: B65H59/22
Filed: 1930-11-07
Abstract: 366,157. Tension arrangements for yarn-winding machines. HIGGINSON, J. and ARUNDEL, COULTHARD, & CO., Ltd., Sovereign Works, Stockport. Nov. 7, 1930, No. 33502. [Class 120 (ii).] In a yarn winding &c. machine provided with a yarn drag of the type in which the yarn passes between two discs a, b capable of relative rotary movements, the discs are mounted upon a pin c which can swing freely under the pull of the yarn. The pin is secured to a bracket by a spring clip m which is located in a slot in the end of a bush o and engages in a groove beneath the spherical head of the pin, a clearance being provided between the pin and the bush. The disc a is loose on the stem, is provided with a boss which projects below the level of the yarn passing between the discs, and is cupped to hold weighting discs ; the disc b is formed from a short metal tube with a turned-over edge i, and is attached to an apertured disc j which seats upon a conical or spherical shoulder k on the pin c.
Patent GB-313464-A (GB)
Title: Improvements in or relating to a method of and means for producing transformation effects for theatrical and like purposes
IPC: F21S2/00
Filed: 1927-12-12
Abstract: 313,464. Martinez, N. H., (Craig, R. M.). Dec. 12, 1927. Theatrical appliances.-A theatre stage is lighted by zones of red and blue (or blue-green) light which, in combination, produce substantially white light so that persons in costumes coloured red, blue, and white appear to changethe colour of their clothes as they move from one zone to another. Two rows of red and blue (or blue-green) lamps, 9 and 11 respectively, arranged parallel to the proscenium 2 produce red and blue zones 13 and 14 and a. substantially white zone where the red and blue lights merge. The floor covering 7 is of a. neutral colour such as dark grey, black, tobacco brown, or Indian red. Each dancer-has a red bodice 17, a blue skirt 18, and white stockings 19 so that as each dancer moves backwards and forwards the various parts of the costume change colour, e.g. in the blue zone 14 the red bodices will appear substantially black. Different parts of a trapeze 20 and the costume of the acrobat 23 are also coloured red, blue, and white. Behind the back scene 8 red and blue lamps 35, 36 are used alternately to illuminate parts of a. ship on the scene. 27 and 28 are red and blue spot lights. In a modification the rows of lamps 9 and 11 are at rightangles to the proscenium 2. In further modifications red, white, and blue lamps (or yellow-green, blue-violet, and red lamps) producing the coloured zones are in the auditorium and the coloured zones do not overlap.
Patent GB-325277-A (GB)
Title: Improvements in means for indicating density and change of density of fluid in evaporators, boilers and other vessels
IPC: G01N27/06
Filed: 1928-11-16
Abstract: 325,277. Crockatt, W. C., and Crockatt & Sons, Ltd., W. Nov. 16, 1928. Resistance measurements; casings for instruments; liquid resistances. -In order to indicate the density and change of density of fluid in evaporators, boilers, &c., by measurement of the conductivity, one or more electrodes are mounted in an insulating member which is clamped to the shell of the vessel with the interposition of watertight packing so that the electrodes extend into the liquid to be tested. In the construction shown two identical units, each having one electrode 17, are fitted on opposite sides of a pipe line 18 for testing water flowing therein. Each electrode 17 has its head covered with platinum 19 and is clamped watertight in an insulating block 21 by means of a nut 20 and washer 23, a washer 22 being interposed between the head of the electrode and the insulating block. The blocks 21 are secured to the body of the pipe line 18 with the heads 19 of the electrodes projecting thereinto by means of a gland 24 which clamps the block 21 between packing rings. The outer end of each electrode passes through an insulating bush 26. A terminal box is arranged as shown in dotted lines. In a modification for clamping to the shell of an evaporator, both electrodes are mounted in one insulating block. The terminals are connected across supply mains in series with an ammeter graduated to show directly the density of the liquid. A water-tight switch may be mounted on the side of the ammeter casing for connecting to the mains. The instrument box may form part of the unit applied to the evaporator shell &c., or may be separate and situated at a distance therefrom.
Patent GB-978985-A (GB)
Title: A method of packing and packages of flowers
Filed: 1963-08-23
Abstract: 978,985. Packaging. EXPA A.G. Aug. 23, 1963 [March 14, 1963], No. 33585/63. Heading B8C. Flowers are packed in a plastics envelope charged with a gas the nitrogen content of which exceeds that of air and in which the nitrogen-oxygen ratio is at least 5:1. The ingredients of the gas may vary within the following limits: nitrogen 78-92%, oxygen 4-16%, carbon dioxide 4-11%, by volume. The gas is mixed in a chamber, and cooled to a temperature below 0 C., before being filled into the envelope. A pressure of 20-28 lbs. p.s.i. may be applied to the envelope interior as a means of keeping it inflated. The flowers may be cooled to about 3 C. before being packed. The envelope is sealed by conventional means.
Patent GB-998581-A (GB)
Title: Improvements in or relating to heat pump arrangements
Inventor: PARKER RALPH
IPC: F25B29/00
Filed: 1960-09-30
Abstract: 998,581. Refrigerating. ENGLISH ELECTRIC CO. Ltd. Sept. 20, 1961 [Sept. 30, 1960], No. 33587/60. Heading F4H. [Also in Division B1] The vapour discharged from a distillation column 2 is condensed in a heat exchanger 4 by means of water, which vaporizes as it absorbs the latent heat of condensation, and the condensed product is withdrawn through pipe 5. The steam is compressed in rotary compressor 12, and the compressed steam flows to heat exchanger 7, where it causes the vaporization of the liquid withdrawn from the base of the column 2. The process vapours are returned to the column through pipe 8. The condensed water leaving heat exchanger 7 via pipe 15 passes through heat exchanger 16, where it is cooled, and then through the throttle valve 18. The low pressure water then returns to heat exchanger 4 via pipe 10. In order to eliminate surging in compressor 12 when the output of column 2 varies, some of the compressed steam leaving the compressor may be returned to the inlet of the compressor through connection 20, which contains a throttle valve 21 and passes through de-superheater 22. Compressor 12 may be driven by a steam turbine, the boiler for which is supplied with water which has been preheated by using it as cooling-medium in heat exchanger 16 and de-superheater 22. The throttle valve 21 and the de-superheater 22 may be replaced by a recovery turbine mounted on the shaft of compressor 12. A system of two or more distillation columns, operated at the same inlet and outlet temperatures, may be connected to a single heat pump circuit with branches in parallel.
Patent GB-1076764-A (GB)
Title: Seal devices and wellhead members and installations embodying the same
IPC: E21B33/00
Filed: 1964-08-17
Abstract: 1,076,764. Wells &c. ARMCO STEEL CORPORATION. Aug. 17, 1964 [Aug. 19, 1963], No. 33595/64. Heading E1F. A device for sealing against a telescopically adjacent well member (not shown) comprises rigid tubular members 66, 72 having spaced, apposed, seal-engaging, end-surfaces and arranged for relative axial movement, a ring shaped flexible seal 90 between the end surfaces, means 100 constraining the members 66, 72 from the axial movement, and means 87 preventing further axial movement of the tubular members after the seal is brought into sealing engagement with the well member. The seal is bonded to the means 87, and the members 87, 72 are releasably fixed to the member 66 by shear pins 99, 100. The device shown in Fig. 4 has a further seal 73, and is adapted to land on a casing hanger in a wellhead, the seals preventing flow through a by-pass into the wellhead and the device being held against upward movement by spring urged pins 112. The device shown in Fig. 5 is adapted to land on a casing hanger in a wellhead and has a seal 151 engaging the wellhead and a seal 152 engaging an upwardly projecting part in the hanger, the tubular members 132, 134 being fixed by shear pins 167, 168 to the means 150 which is bonded to the seals. In modification the device is incorporated in casing hangers.
Patent GB-663209-A (GB)
Title: Improvements relating to carrying straps for bags
IPC: A63B55/00
Filed: 1948-12-31
Abstract: 663,209. Portmanteaux &c. handles. LEYLAND & BIRMINGHAM RUBBER CO., Ltd., and GOUDIE, A. N. Dec. 31, 1948, No. 33650. Class 133. [Also in Group XV] A carrying strap for bags comprises a portion 2 with a loop 3 and connected to a second portion 1 by stitching, the two portions also being connected by a coil spring 4 through strips 7 and 8.
Patent GB-1516742-A (GB)
Title: Exhaust gas purifying device
IPC: F01N3/26
Filed: 1975-08-13
Abstract: 1516742 I,C. engine afterburners NISSAN MOTOR CO Ltd 13 Aug 1975 [13 Aug 1974] 33690/75 Heading F4B An afterburning device 12 for an I. C. engine 10 delivers a first exhaust gas flow into first inlet ports 30, 36 of the reaction chamber 28 and a second flow of different composition into second inlet ports 32, 34, passageways 38, 40 in the chamber extending respectively from ports 32, 34 towards the front of the ports 30, 36 for intensively mixing the flows prior to exhaust through an outlet port 42 of the chamber. An I.C. engine utilizing a carburettor 22 to provide above and below stoichiometric air-fuel ratios, is described but fuel-injected type engine may be combined with the device. The engine may have six or more combustion chambers, the inlet ports for which are formed in two groups.
Patent GB-506920-A (GB)
Title: Improvements in and relating to speed indicating apparatus
IPC: G01P3/36
Filed: 1937-12-06
Abstract: 506,920. Speed indicators. WILLIAMSON, S., and WILLIAMSON MANUFACTURING CO., Ltd. Dec. 6, 1937, Nos. 33714/37 and 19908/38. [Class 106 (iii)] In an apparatus for determining speed in relation to a distant object in which an image of the object and an image of a moving member are viewed by an optical system and the speed of the moving member is adjusted until the images move at the same speed, the moving member comprises a drum 4 having slits 5 and illuminated from behind. A semisilvered reflector 3 is used to superimpose the two images. The drum may be arranged at the side of the optical apparatus as shown or may be arranged around the optical apparatus with its axis coaxial therewith.
Patent GB-1313629-A (GB)
Title: Display devices
IPC: G09F23/02
Filed: 1971-07-19
Abstract: 1313629 Display devices DISPLAY CORP INTERNATIONAL 19 July 1971 [20 July 1970 11 Feb 1971] 33728/71 Heading G5C A knob for a draught beer tap comprises an outer transparent shell 16 and an inner shell 18, which has a design or advertisement thereon, mounted for rotation on jewelled bearings 32. A weight 34 gives the inner shell 18 an uneven weight distribution thereby causing the shell 18 to rotate or oscillate when it is displaced to or from the position shown. In modifications, the weight has an asymmetric shape or is slidably mounted on a rod. In a further modification, the shells are concentric spheres, the inner rotatable sphere comprising a wall of uneven thickness or a weight embedded in a wall of even thickness.
Patent GB-459568-A (GB)
Title: Improvements in or relating to wireless receiving sets
IPC: H03G3/26
Filed: 1935-12-06
Abstract: 459,568. Valve circuits for wireless reception. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ACKROYD, J. O., c/o General Electric Co., Ltd., Wembley, Middlesex. Dec. 6, 1935, No. 33871. [Class 40 (v)] The anode of the signal diode rectifier 6, 19 of a wireless receiver is positively biassed by the inclusion in its circuit of the resistance 10 carrying current from the H.T. supply, so that its impedance is low for weak signals and the rectified output is inappreciable. This muting action may be removed by the closing of a switch 14 connected across the resistance 10 and the switch may be ganged with the volume control resistance 2 so that it is closed when the sensitivity of the controlled valve 1 is at a maximum.
Patent GB-773497-A (GB)
Title: An improved mixing machine
IPC: B01F7/24
Filed: 1953-12-07
Abstract: 773,497. Mixing-machines. THORDAHL, G., [trading as THORDAHL & CO., G. J.]. and PODMORE, A. March 4, 1955 [Dec. 7, 1953], No. 33909/53. Class 86 A mixing-machine suitable for example, for mixing meal, comprises a casing 11 containing a vertical screw 13 the upper portion of which is surrounded by a cylindrical tube 31 and the screw carrying a spinner plate 32a adapted to project material coming out of the tube 31 against the inner wall of the casing 11. The screw has also an upper arm 32 and a lower arm 33 to prevent caking or clogging of the material. The bottom end of the screw may be tapered as shown. The screw is driven through gearing from a motor 21 and drives through a belt 49 and pulleys 48, 27 a vertical screw conveyer 44. The conveyer at its lower end is provided with a frusto-conical feed member 51 surrounding the conveyer casing 43 and connected to two driving rods 52 which at their upper ends are pivotally connected to horizontally-extending arms 55 of a bell crank lever assembly fulcrummed on a pin 56 carried by upstanding lugs 57 pivotally mounted on the casing 11. An arm 58 extending up from the pin 56 is pivoted through a ball-joint 59 to a rod 60 terminating in a plunger enclosed in a sleeve containing a spring 61 which bears against the plunger. The end of the sleeve is connected by a ball-joint 62 to a crankpin carried by the crank 28 so that as the screw 13 and the conveyer 44 rotate the feed member 51 is reciprocated vertically. Above the feed member 51 is a second feed member 154 which . surrounds only half of the conveyer casing 43.
Patent GB-333117-A (GB)
Title: Improvements relating to discharge valves for drums, barrels and the like
IPC: F16K27/00
Filed: 1929-11-07
Abstract: 333,117. Noble, P. Nov. 7, 1929. Connecting to drums and barrels.-A tapping device for drums, barrels &c. comprises an orifice 4 obturated by a spring-controlled piston 5 which carries on its forward end an extension 15 to reduce the liability of the valve to drip at the port, the device being secured to a tubular neck projectipg from the barrel &c. by first inserting a flange 9 while the plane of the flange is inclined to the axis of the neck and thereafter screwing up a nut 7 so that a washer 17 is pressed against the edge of the neck to form a tight joint.