baber/WOPTO huggingface dataset:
Patent GB-1475112-A (GB)
Title: Apparatus for receiving or tra-smitting optical electro magnetic radiation
IPC: F41G7/22
Filed: 1974-06-04
Abstract: 1475112 Receiving and transmitting using a gyro stabilized mirror BOFORS AB 4 June 1974 [8 June 1973] 24779/74 Heading G2J In a device for receiving or transmitting radiation in which the receiving or the transmitting direction must be gyro stabilized, e.g. in a laser guided missile, a mirror surface 2 of a gyroscope is used to receive or transmit radiation through a lens system 1. The lens system is at a distance away of one half the focal length of the system so that the incident or transmitted beam which is parallel to the gyro stabilized direction is focused on a detector 4, Fig. 3, or transmitted from a source, laser, of radiation 17, Fig. 4. In a receiver for use in a missile, Fig. 3, the mirror 2 is supported on a hub 6 by a bearing 7 and is set in rotation by a spiral spring 8, or by an  induction motor for the corresponding transmitter. When the spring 8 is wound up it engages in the mirror section by a gripping lug 10 but, until use, its torque is counteracted by a blocking pin 11 which is withdrawn when firing by a solenoid 12 causing the mirror to rotate. The hub 6 is mounted on a cardanic (universal) suspension. The mirror gyro can be given a different direction by precessing it by means of torque motors 13 and 14 which activate the hub 6 via push-rods 15 and 16. The Fig. 3 embodiment may be modified to become a transmitter along the optical lines of Fig. 4.
Patent GB-586905-A (GB)
Title: Improvements in or relating to boxes or cartons
IPC: B65D5/50
Filed: 1944-12-11
Abstract: 586,905. Boxes. MORRIS, L. S. Dec. 11, 1944, No. 24813. [Class 18] A box or carton of the kind comprising an outer container with an inner enclosure for the article to be packed consisting of separate supporting means and shock-absorbing devices, has end supports with slots formed therein to receive the spindle or projecting end parts of an electric generator or other machine, and consisting of channel members spaced from the ends of the box by separately formed spacing or buffer members secured to them, and held in place by a shock-absorbing or buffer member located at each side of the box and wedged between the end supports. As shown, a waterproof wrapping g is first inserted in the carton a, followed by a lower member c consisting of a sheet to which two supports c' of corrugated cardboard are attached. The channel shaped. end supports d have slots d<1> and are spaced from the ends of the box by buffer members d<2>. Members formed of sheets of cardboard folded to form one or more hollow rectangular sections e<1> are wedged between the members d. The packing is completed by an upper member which may be similar to the lower one after which the waterproof liner is folded over and the lid or cover placed in position.
Patent GB-1137000-A (GB)
Title: Improvements in high stretch thermal insulating laminates
IPC: B63C11/04
Filed: 1967-05-30
Abstract: 1,137,000. Laminates. UNIROYAL Inc. 30 May, 1967 [31 May, 1966], No. 24833/67. Heading B5N. A flexible, high stretch thermally-insulating laminate comprises a core sheet 11 of cellular sponge or foam covered on both faces with fluidimpermeable skins 12 composed of rubber or plastics material, the core sheet 11 being cut with a number of slits 13 lying at angles of between 30 and 60 degrees, and preferably 45 degrees, to a line extending perpendicular to the two skins. The cellular sponge or foam is preferably of open-cell structure and the slits are arranged substantially parallel. The slits may extend entirely through core sheet 11 or alternate slits may start at opposite faces of the core sheet and terminate short of the other face of the core sheet (Fig. 2, not shown). The core sheet may be made of polyurethane foam or vinyl foam, or it may be composed of natural rubber foam, styrene-butadiene foam, neoprene, isoprene or blends of natural and synthetic rubber. The same materials but unfoamed may be used for the skins 12. When the core 11 comprises open cells the cells may be pressurized with gas. The laminate may be used in the construction of space or diving suits or in the construction of walls for collapsible and inflatable shelters or vehicles.
Patent GB-151259-A (GB)
Title: A process for the production of alumina from aluminium nitrate solutions
IPC: C01F7/24
Filed: 1920-08-27
Abstract: A solution of aluminium nitrate is evaporated to distil off dilute nitric acid, and water, steam, or fresh solution is added so as to keep the temperature constant (about 140 DEG  C.) until the bulk of the alumina is precipitated as a crystalline basic nitrate which is practically free from iron even if the solution is ferruginous.  It is advantageous to treat solutions containing calcium or sodium nitrate, which remains in solution in the mother-liquor.  Such solutions may be obtained by adding some base or salt such as limestone to the nitrate solution before heating. Alternatively the solution of nitrate to which such a base or salt has been added, or from which some acid has been distilled off may be heated under pressure in an autoclave to effect the precipitation of the basic nitrate.  The basic nitrate obtained as above described is heated to obtain alumina and nitrogen oxides which are converted into nitric acid.  The mother-liquor is treated with nitric acid to convert the alumina content to normal nitrate and the solution is evaporated until aluminium nitrate crystallizes out and may be returned to the original solution and the remaining mother-liquor is evaporated to dryness to recover the sodium or calcium nitrate.ALSO:A solution of aluminium nitrate is evaporated to distil off dilute nitric acid and water, steam, or fresh solution is added so as to keep the temperature constant (about 140 DEG  C.) until the bulk of the alumina is precipitated as a crystalline basic nitrate which is practically free from iron even if the solution is ferruginous.  It is advantageous to treat solutions containing calcium or sodium nitrate, which remains in solution in the mother-liquor.  Such solutions may be obtained by adding some base or salt such as limestone to the nitrate solution before heating. Alternatively the solution of nitrate to which such a base or salt has been added or from which some acid has been distilled off may be heated under pressure in an autoclave to effect the precipitation of the basic nitrate.  The basic nitrate obtained as above described is heated to obtain alumina and nitrogen oxides which are converted into nitric acid.  The mother-liquor is treated with nitric acid to convert the alumina content to normal nitrate, and the solution is evaporated until aluminium nitrate crystallizes out and may be returned to the original solution and the remaining mother-liquor is evaporated to dryess to recover the sodium or calcium nitrate.
Patent GB-791731-A (GB)
Title: The antiviral substance produced by the fermentation of nocardia formica
IPC: C07D207/22
Filed: 1954-08-26
Abstract: <PICT:0791731/IV (b)/1> An antibiotic active against viruses and designated Noformicin is isolated from a fermentation broth in which the micro-organism Nocardia formica Nov. Spec. NRRL-2470 has been grown by contacting the broth with an adsorbent material, eluting the adsorbed material with an aqueous acidic solution, concentrating the eluate to small volume, subjecting the concentrate to chromatographic purification by adding an aqueous solution thereof to a column of adsorbent material, developing and eluting the column with aqueous acid solution and collecting fractions of eluate having a pH below 6 and concentrating the collected eluate to obtain the active material. The adsorbent may be charcoal or a cation exchange resin deriving its exchange capacity from carboxylic groups, e.g. "Amberlite" (Registered Trade Mark) IRC 50.  The adsorbent used in the preliminary adsorption step and in the chromatographic purification step may be the same or different.  Elution is by aqueous mineral acid, <FORM:0791731/IV (b)/1> it shows broad infra-red absorption at 3-4, 5.92; 6.0 and 6.45 microns.  There are no characteristic ultra-violet peaks and very little e.g. hydrochloric or sulphuric acid, aqueous alcoholic solution of pH below 6.0 (especially where adsorbent is charcoal) and aqueous aliphatic acid containing up to six carbon atoms, e.g. acetic or propionic.  A further purification is obtained by dissolving in an aliphatic alcohol such as methanol, ethanol or propanol and adding a non-solvent such as nitromethane or ether. Noformicin is obtained as the hydrochloride when hydrochloric acid is used in the elution steps.  The sulphate is produced by adding triethylamine sulphate to a methanol solution of the hydrochloride.  The picrate is produced by adding picric acid to an aqueous solution of the hydrochloride.  Noformicin is a nitrogenous, basic water-soluble, dialysable, somewhat solvent-soluble, colourless organic substance.  Active against swine influenza and plant viruses (see Group VI).  Dihydrochloride contains 36.5 per cent carbon, 6.0 per cent hydrogen, 25.8 per cent nitrogen and 24.6 per cent chlorine and has the formula: absorption over the range 2300-4000  .  The fermentation medium contains (a) one or more nitrogenous nutrients, e.g. meat extract, casein hydrolysate, soybean meal, corn steep solids and distillers' solubles; (b) a sugar, e.g. maltose or dextrose; and (c) minerals, e.g. sodium chloride.  Preferred is a medium containing 1 to 2 per cent nitrogenous substance; 1 per cent sugar, and 0.5 per cent mineral salt.  The pH is initially 7.0 to 7.2, the temperature of fermentation 20-37 DEG  C. and preferably 27 DEG  to 28 DEG  C. and the duration of fermentation 48 to 96 and especially 72 hours.ALSO:An antiviral antibiotic noformicin, obtained by the fermentation of Nocaridia formica NRRL-2470 (see Group IV (b)), is used as a 0.1 per cent solution for the treatment of virus diseases.
Patent GB-227168-A (GB)
Title: Improved apparatus for heating bitumen, tar and other substances
IPC: C10C3/12
Filed: 1923-10-06
Abstract: 227,168. Coleman & Sons, Ltd., T., and Coleman, F. Oct. 6, 1923. Cauldrons.-A tar boiler of the kind in which the tar tank is divided into a number of communicating chambers, has the floor of the hottest chamber raised above. the floors of the others and the communicating passages arranged immediately above the floors and directly over the furnace. In the form shown, the furnace a has a domed roof c and the chambers f, g, h are longitudinal, the communicating passages k being controlled by strips j adjustable on the partitions c. Solid substances to be melted are charged into the chamber f through the opening m, the molten material flowing into the chambers g, h through the passages k. Alternatively, tar may be charged into the chambers g, h, the chamber f taking the overflow during boiling.
Patent GB-1417348-A (GB)
Title: Mould for manufacturing plastic articles and method of manufacturing the mould
IPC: C22C38/04
Filed: 1973-05-24
Abstract: 1417348 Precipitation hardened alloy steel STORA KOPPARBERGS BERGSLAGS A B 24 May 1973 [26 May 1972] 24990/73 Heading C7A A mould for the manufacture of plastics articles consists of a precipitation hardened alloy steel of composition C 0 - 0.05% Ni 5 - 7% To facilitate cutting in the untempered state the steel may contain .035 - 2% S. The steel may be prepared by vacuum degassing or electro-slag refining and the mould may be prepared by solution treatment of a blank of the steel for one hour at 800 to 1050‹C, air cooling, machining to shape, hardening by heating to 400 - 500‹C for 12 to 36 hours and polishing.
Patent GB-878157-A (GB)
Title: Improvements in moulding presses
IPC: B29C45/18
Filed: 1958-08-05
Abstract: 878,157. Injection moulding. HEHL, A., HEHL, K., and HEHL, E., [trading as ARBURG FEINGERATEFABRIK O.H.G. HEHL & SOHNE.]. Aug. 5, 1958 [Aug. 5, 1957], No. 25127/58. Addition to 877,300. Class 87(2). In an injection moulding machine according to the parent Specification predried raw material is prevented from taking up moisture e.g. by means of an air tight cover 2, Fig. 1, on the filling hopper 6 and by a hygroscopic agent 4, e.g. silica gel, contained in a perforated casing 1 within the filling hopper. Springs 22, Fig. 3, biasing a nozzle valve to closed position are housed outside the injection cylinder 11 to prevent deterioration through heat. The valve comprises a needle 18 pivoted at 19 in a piston 17 which is slidable within a torpedo member 12 in the cylinder 11. Adjustment of the valve can be effected by rotating a micrometer sleeve 25 to vary the pressure transmitted through a bevel ended member 16 and a ball or roller 20 carried by the piston 17.
Patent GB-1508093-A (GB)
Title: Capacitor discharge ignition system
IPC: F02P15/00
Filed: 1976-06-17
Abstract: 1508093 Ignition systems BENDIX CORP 17 June 1976 [14 Aug 1975] 25177/76 Heading F1B A capacitor discharge ignition system comprises a transformer having a primary winding 11 and a secondary winding 13, a storage capacitor 50 charged from the secondary winding 13 by way of rectifying means 21, 22 and a spark-plug 90 for periodically discharging the electrical energy stored in the storage capacitor 50 and the transformer includes a third winding 12 in series with the primary winding 11 and a correction capacitor 3 is connected across the primary winding 11 and the third winding 12. When the voltage on the storage capacitor reaches the breakdown voltage of the control gap 60 the control gap is rendered conductive. When this occurs the trigger capacitor 70 discharges through the primary winding 81 of the transformer 80 resulting in a stepped up voltage across the secondary winding 82 simultaneously with the initiation of an arc across the gap of the sparking plug 90 the energy contained in the storage capacitor 50 is discharged through the control gap 60 the secondary winding 82 and through the gap in the spark-plug 90. The transformer 10 may be powered by an interrupted D.C. source.
Patent GB-913614-A (GB)
Title: Improvements in or relating to dry rectifier assemblies
IPC: H01L23/047
Filed: 1960-07-19
Abstract: 913,614. Semi-conductor devices. SIEMENSSCHUCKERTWERKE A.G. July 19, 1960 [July 22, 1959], No. 25196/60. Class 37. Figs. 1, 2 and 3 show a rectifier stack consisting of a number of selenium rectifier tablets 5 terminal plates 7, resilient compressing members 8 and, if necessary, dummy plates 6, mounted in and insulated from a U-shaped housing 2. Figs. 4 and 5 show details of the housing which is provided with end clips 2a bent over to hold the rectifiers between insulating end-pieces 4. The top of the housing is bent slightly outwards to receive a lid 10 (Fig. 9) which has a stepped portion 13b engaging the edge of the turned-out portion of the U. Clips 2b, 2c are turned down to hold the lid in position. The terminals 7b pass to the exterior of the housing through slots in the lid. Tags 3a may be pushed through holes in a mounting-plate and twisted as described and claimed in Specification 912,792.
Patent GB-1158652-A (GB)
Title: Reclining Mechanism for T Cushion Chair
Inventor: RE FRANK MANUEL
IPC: A47C1/0355
Filed: 1967-06-01
Abstract: 1,158,652. Reclining chairs. DUAL MFG. & ENG. Inc. 1 June, 1967, No. 25222/67. Heading A4J. The seat of a reclining chair is arranged to move forwardly and upwardly, as the backrest is tilted rearwardly, so that lateral projections 10, of the seat cushion, clear the ends of the chair arm rests, and thus do not impede the movement of the chair to the reclined positions. The linkage system is carried on support plates 52 screwed to the chair base. Stationary pivots 60, (71), for levers 70, 104 and 112 are fixed on plate 52 to carry the whole system. A push bar 62 carries pivots 72, 84, 118 and 124 and the seat side rail 22 carries pivots 80, 88, 122 and 138. The initial rearward tilting of the backrest 44 erects the footrest 156 by movement of bar 62 relatively to rail 22. Further movement rotates the lever 102 to lift the front of the seat and footrest into the fully reclined position.
Patent GB-1115524-A (GB)
Title: Improvements in or relating to electro-acoustic transducers
IPC: G01S1/72
Filed: 1965-06-15
Abstract: 1,115,524. Subaqueous transducers. ELECTROACUSTIC G.m.b.H. 15 June, 1965 [15 June, 1964], No. 25346/65. Heading H4J. A subaqueous transducer comprises a diaphragm 2 operable in piston-like manner by means of a piezo or magnetostrictive transducer 1, which diaphragm defines with the transducer housing an air chamber 5 and has a surface area substantially equal to that of the housing. A plurality of such transducers can be mounted together by means of e.g. tongues located in adjacent grooves 26 whereby the diaphragms form a virtually continuous sheet. The air chamber acts as a screen for preventing interference from the rear edge of the diaphragm and as a buffer against high pressures surrounding the transducer. The transducer 1 is attached on its lower face to a massive block 13 which is resiliently supported by arms 14 to the casing 15, 14. A compression joint 16 seals the cable gland 18 to the housing 14. A plastics cover 11 completely enshrouds the gland and housing. The diaphragm as shown comprises two portions 2 and 2a of which the latter is resiliently supported by arms 3 to the housing 4. However, the housing, diaphragm and support arms may be an integral structure. Numerous alternatives for the shapes of the diaphragm, air chamber 5 and support arms 3 are discussed with reference to Figs. 3 to 17 (not shown). The shape of the housing i.e. cylindrical, conical, can be altered so as to enable the transducers to be placed close together to provide various shapes of radiating surface i.e. plane, spherical.
Patent GB-604822-A (GB)
Title: Improvements in the construction of fishing casts
IPC: A01K91/04
Filed: 1946-08-26
Abstract: 604,822. Fishing. HEDDERWICK, H. J. Aug. 26, 1946, No. 25377. [Class 48] A method of joining two or more fishing lines together comprises a tubular fitting C, of metal or other material through which the lines are threaded after which the fitting is pinched on to the lines by pliers or another tool. The Figure shows a dropper D and two main lines A, B coupled together. The internal surface of the fitting may be roughened. Specifications 533,548 and 604,821 are referred to.
Patent GB-1508987-A (GB)
Title: Thrust bearing for a clutch release mechanism
IPC: F16C19/10
Filed: 1974-06-07
Abstract: 1508987 Clutch control; bearings RANSOME HOFFMANN POLLARD Ltd 6 June 1975 [7 June 1974] 25379/74 Headings F2L and F2A In a clutch release thrust bearing for a motor vehicle wherein caged balls 4 engage rotatable and non-rotatable races 1, 2 having limited relative radial freedom and the balls 4 engage a grooved raceway 1a on one race and a planar raceway 2a on the other race, a pressed steel or moulded plastics cover is provided. The grooved raceway 1a may be provided on the rotatable race 1 or on the non-rotatable race (Fig. 8, not shown). The ball cage 5 has axial extensions 5b which limit the relative radial movement between the races 1, 2. The rotatable race 1 carries or is integral with a ring 6 which engages the clutch disengaging mechanism. The ring 6 may have a convex or concave face. When the ring 6 engages a diaphragm spring it may be provided with axial projections which engage between the diaphragm spring tongues. The non-rotatable race 2 may, as shown, be fast with a hub 3 axially slidable on a sleeve (not shown). Alternatively the non-rotatable race 2 may be carried by a ring having trunnions engaging a clutch release fork.
Patent GB-368270-A (GB)
Title: Improvements in and relating to electric negative resistances
IPC: H03F3/62
Filed: 1930-08-27
Abstract: 368,270. Generating and amplifying oscillations. HABANN, E., 44, Stargarderstrasse, Berlin. Aug. 27, 1930, No. 25593. Convention date, Nov. 23, 1929. Addition to 367,790. [Class 40 (v).] Resistance materials as claimed in the parent Specification, and applicable for generating or amplifying electric oscillations, are prepared from a substance, such as copper or zinc oxide, which is a good conductor at ordinary temperature when fused or sintered, but is a non-conductor when powdered and compressed. Copper or zinc oxide alone, or a mixture of zinc oxide with 3 per cent by weight of copper oxide, is fused or sintered, pulverized, and poured into a glass tube about 1 mm. in internal diameter. Two metal dies are then pushed in to form electrodes, the layer of powder being not more than one or two millimetres thick. A pressure of over 300 volts is then applied, which breaks down the resistance. The pressure of the electrodes is then adjusted to the optimum value. A little metallic powder such as copper, iron, or zinc may be added to the pulverized substance. A nonconducting oxide may be added as a separating medium for regulating the distance between the particles of the effective substance.
Patent GB-672677-A (GB)
Title: Method and apparatus for measuring the volume of higher harmonic frequencies in alternating current
IPC: G01R23/02
Filed: 1948-10-01
Abstract: 672,677. Measuring harmonic content. VACKAR, J. Oct. 1,. 1948, No. 25610/48. Class 37. Apparatus for measuring the even harmonic content when the peak of the fundamental coincides with a peak of the harmonic, comprises means D1, D2, Fig. 1, for rectifying the oscillation to produce two currents proportional to the negative and positive half-cycles, which are impressed on one coil of a ratiometer whose other coil is fed with the mean value of the oscillation. The deflection is a measure of the content of even harmonics. Apparatus for measuring the odd harmonic content comprises means D1, D2, Fig. 2, for obtaining a current in R3 proportional to the peak value of the oscillation, and means D3, D4 for obtaining a current in R4 proportional to the mean value, both currents being impressed in opposition on one coil of a ratiometer whose other coil is fed with the peak value only. The deflection is a measure of the content of odd harmonics. Specification 381,940 is referred to.
Patent GB-502259-A (GB)
Title: Improvements in advertising signs and the like comprising electric discharge lamps
IPC: H05B41/39
Filed: 1937-09-21
Abstract: 502,259. Control systems for discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen) Sept. 21, 1937, No. 25615. [Class 38 (iv)] Resistance control.-An advertising-sign or the like in which a discharge lamp having a rare gas filling and a luminescent material in contact with the gas has its colour varied cyclically by varying the current through the lamp automatically and cyclically. A discharge lamp 1 filled with neon and having an internal coating of willemite or zinc-beryllium silicate or the tungstate of magnesium, zinc or cadmium is connected to A.C. supply 8 in series with a variable resistance 14, the contact arm 13 of which is moved to and fro by clockwork. The discharge current is varied from a low value at which the colour of the luminescence predominates, to a high value at which the colour of the gas discharge predominates. Specification 457,486, [Group XL], is referred to.