baber/WOPTO huggingface dataset:
Patent GB-914294-A (GB)
Title: Improvements in or relating to electronic switching devices
IPC: H03K17/62
Filed: 1961-04-07
Abstract: 914,294. Transistor switching - circuits. ROCHAR ELECTRONIQUE. April 7, 1961 [April 9, 1960], No. 12611/61. Class 40 (6). [Also in Group XXXVIII] A transistor switching circuit comprises two transistors 3, 4, of opposite conductivity types, having their collectors connected together to an output terminal 6, and their emitters connected across a source of reference potential 7; and a third transistor 8, of the same conductivity as transistor 3, having its base connected to the emitter of transistor 3, its emitter connected to the base of transistor 3, and its collector connected to the base of transistor 4; the arrangement being such that when no input signal is applied to the base of transistor 3, it is conductive and transistors 4, 8 are cut-off, and when an input signal is present, transistor 3 is cut-off, and transistors 4, 8 are conductive. With no input signal present bias source 9 biases PNP transistor 3 on, and PNP transistor 8 off and bias source 12 biases NPN transistor 4 off. Application of a signal of the appropriate polarity to the input 1, 2 produces a potential which opposes bias 9 cutting transistor 3 off and switching transistor 8 on, and the change in potential across resistor 14 due to the collector current of transistor 8 is sufficient to switch transistor 4 on. Diode 11 is provided to limit the baseemitter potential across transistor 4. The circuit may form part of a digital-to-analogue converter, one circuit as described being associated with each sealer. Output resistors 6 are then made proportional to the weighted coefficient of each sealer. If the polarities of the biases and the conductivity type of transistor 8 are reversed the functions of transistors 3, 4 may also be reversed.
Patent GB-1224508-A (GB)
Title: Production of iron oxide
Inventor: BLICKLE TIBOR
IPC: C01G49/06
Filed: 1968-03-15
Abstract: 1,224,508. Ferric oxide production. MTA MUSZAKI KEMIAI KUTATO INTEZET. 15 March, 1968, No. 12734/68. Heading C1A. [Also in Division F4] Red ferric oxide is produced by partially dehydrating ferrous sulphate heptahydrate and decomposing the product by heating in a lower fluidized bed 17 in a reactor 15, at least 5% of the ferric oxide formed being cycled to an upper fluidized bed 48 in the reactor at 400-600‹ C. where any sulphur dioxide produced in the lower bed is oxidized to sulphur trioxide using the ferric oxide as catalyst, there being continuous circulation between the two beds so that catalyst sulphatized in the upper bed is regenerated in the lower bed. In the embodiment, the sulphate is partially dehydrated in a fluidized bed reactor 7 at 100‹ to 200‹ C. The lower fluidized bed is maintained at 600‹ to 900‹ C. The product is mixed with water at 23 and separated into fine and coarse particle sizes in cyclone 25, the coarse slurry passing to ball mill 28. The fine slurry is washed at 27 and passed to a centrifuge and drier. The gas leaving the reactors is passed through cyclones 35 and 36 and countercurrent gas-liquid foam washers 37 and 38 to remove solids.
Patent GB-918882-A (GB)
Title: New alkylene-bis-n : n-nitro carbamates
Inventor: TAYLER FREDERICK MAURICE
IPC: A01N51/00
Filed: 1960-04-11
Abstract: The invention comprises (1) ethylene-bis-N,N1-nitro-n-propyl-carbamate, ethylene-bis-N,N1-nitro-isopropyl-carbamate, ethylene-bis-N,N1 - nitro - n - butyl-carbamate, ethylene-bis-N,N1 - nitro - isoamyl-carbamate, ethylene-bis-N,N1 - nitro - 3,5,5 - trimethylhexyl-carbamate, ethylene - bis - N,N1 - nitro-lauryl-carbamate, ethylene-bis-N,N1-nitro-cetyl-carbamate, ethylene - bis - N,N1 - nitro-cyclohexyl-carbamate, propylene - bis - N,N1-nitro-urethane, trimethylene-bis-N,N1-nitro-urethane and decamethylene-bis-N,N1-nitro-urethane; and (2) the preparation of these and other alkylene-bis-N,N1-nitrocarbamates of the formula: - <FORM:0918882/IV (b)/1> wherein R is a monovalent hydrocarbon group and X is a divalent alkylene radical, by reacting a diamine H2N-X-NH2 or a salt thereof, in the presence of aqueous alkali solution with a chloroformate RO.CO.Cl, and subjecting the product to nitration, e.g. with mixed fuming nitric acid and acetic anhydride. Specification 917,869 is referred to.
Patent GB-164942-A (GB)
Title: Improvements in or relating to advertising and display devices
IPC: G09F1/06
Filed: 1920-05-08
Abstract: 164,942. Mathews, T. May 8, 1920. Card and like stands.-A collapsable showcard comprises a front member 5 and a back member 1, both hinged to a base 3, and a strut 6 vertically hinged to the rear of the front member 5 and passing through a slot 11 in the back member 1. A notch 10 and a shoulder 9 in the strut 6 engage the member 1 to lock the whole in upright position. The slot 11 is continued in to the base 3 to permit the collapsing movement to take place. In a modification, two shouldered struts are provided, both vertically hinged to the rear of the front member and working through an opening in the back member.
Patent GB-723630-A (GB)
Title: Improved products deriving from st. john's bread seed-meal
Inventor: JULICHER WOLFGANG
IPC: C08B37/14
Filed: 1952-05-21
Abstract: Ethers of St. John's bread seed meal are prepared by treating the seed meal with mineral acid or other acid of similar dissociation constant in the presence of an inert liquid diluent and under specified conditions which avoid and substantial hydrolysis of the meal or the formation of reducing sugars, and subsequently etherifying the treated seed meal in alkaline solution by addition of halogenated fatty acid.  The acid-treatment is carried out under such conditions of time, temperature and kind of acid, its concentration and its water content (if any) that by boiling 1 gm. of the acid-treated meal in 100 ml. of water for 20 mins. and slowly cooling with vigorous stirring during a further 20 mins. the resulting solution shows a viscosity which is at least one-third lower than that of a solution prepared in the same manner with meal not subjected to the acid treatment; also, the solution must give a negative result when tested with Fehling's solution.  In an example, the seed meal is suspended in methanol and concentrated hydrochloric acid added; the mixture is heated for 15-30 mins. at 50 DEG  C. and then neutralized with solid caustic soda; etherification of the product is effected by slow addition thereto of a solution of caustic soda and a solution of mono-chloracetic acid in methanol. The product may be used as a thickening agent for textiles.
Patent GB-560098-A (GB)
Title: Improved carburising plant
IPC: C21D1/46
Filed: 1942-09-11
Abstract: 560,098. Carburizing furnaces. GURNEY & EWER, Ltd., EWER, H. N., and RUSHTON, G. D. Sept. 11, 1942, No. 12852. [Class 51 (ii)] Articles to be carburized are conveyed through a carburizing liquid in a bath 1, which is externally heated, upon a conveyer 2 provided with hooks 10 on which the articles 15 are suspended. The articles pass through a slot in the end wall 25 to a preheating chamber 26 before entering the bath. The conveyer chain is protected by refractory members 21, 22 supported in channel members 13, 14, 24. The conveyer chain passes around' sprockets 3 and guide rollers 5, 6 the rollers 6 being supported on a counterweighted lever 7 for tensioning the conveyer chain. Scrapers 18 operated by rods 19 are provided on the edges of the bath.
Patent GB-540162-A (GB)
Title: Improvements in and connected with electric cable clamps
IPC: H01R4/32
Filed: 1940-08-12
Abstract: 540,162. Binding-posts. CRABTREE & CO., Ltd., J. A., McLOUGHLIN, H. F., and HILL, W. E. Aug. 12, 1940, No. 12866. [Class 38 (i)] A slotted screw a in which slides a clamping member f cooperates with a nut e having a closed top, within which the clamping member is located, the top wall of the nut acting on the clamping member and a flange at the open end of the nut cooperating with projections f<1> on the member, the flange being 'formed from the thin edge g of the nut spun over the projections. A label having a circular opening may be pressed into an annular groove in the nut.
Patent GB-437040-A (GB)
Title: Improvements in or relating to very short wave radio transmitting apparatus
IPC: H03C7/02
Filed: 1934-04-28
Abstract: 437,040. Wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, and LINSELL, A. A., 80, Crystal Palace Park Road, both in London. April 28, 1934, No. 12893. [Class 40 (v)] A number of energy-absorbing conductors 3 ... 11, Fig. 1, arranged in the path of a short-wave beam transmitted from a station 1, 2, may be variably tuned, to give the beam a desired degree of convergence, divergence, or direction, or to modulate it. As shown in Fig. 2, the absorbing conductors 5 ... 9 include the anode-cathode path of a corresponding number of valves 12 ... 16 the internal impedance of which is controlled progressively (owing to the different biassing - voltages B12....B16) by a microphone 17 coupled in parallel with each valve. The valves may be coupled to each absorbing aerial through a transformer, instead of being connected directly in circuit, and the line of elements 3 .... 11, Fig. 1, may be inclined at an angle to the path of the beam instead of being at right-angles to it. Specification 413,646 is referred to.
Patent GB-915574-A (GB)
Title: Improvements in the treatment of proteinaceous materials
Inventor: VALENTINE LESLIE MACKENZIE
IPC: D06M13/278
Filed: 1959-06-02
Abstract: Cellulosic materials, e.g. fibres, yarns, filaments, films and woven, knitted or non-woven fabrics comprising cotton, viscose rayon, linen or secondary cellulose acetate, are chemically modified by treating them with bis-b -hydroxyethyl sulphone and an alkaline or potentially alkaline catalyst, e.g. sodium hydroxide, carbonate, silicate or bicarbonate, under such conditions that reaction takes place.  The materials may be impregnated with an aqueous solution of the bis-b -hydroxyethyl sulphone which may be alkaline or the materials may be treated with alkali as a separate step.  After impregnation the materials may be dried by heating or dried and heated to a temperature higher than 100 DEG C. without previous removal of the catalyst. Specifications 664,795 and 915,571 also are referred to.ALSO:Fibres, yarns, filaments and woven, knitted or non-woven fabrics comprising cellulosic or proteinaceous materials, e.g. cotton, viscose rayon, linen or secondary cellulose acetate alone or in admixture with nylon or polyester fibres, are chemically modified by treating them with bis-b -hydroxyethyl sulphone and an alkaline or potentially alkaline catalyst, e.g. sodium hydroxide, carbonate, silicate or bicarbonate, under such conditions that reaction takes place to improve their shrink resistance, crease resistance, ability to retain creases and mechanical effects, e.g. pleated, glazed and embossed effects made before or during treatment, abrasion resistance, fixation of stiffening agents, e.g. starch or starch products, and resistance to chlorine retention.  The fibrous materials treated may be impregnated with an aqueous solution of the bis-b -hydroxyethyl sulphone which may be alkaline or the material may be treated with alkali as a separate step.  After impregnation the material may be dried by heating or dried and heated to a temperature higher than 100 DEG C. without previous removal of the catalyst.  The material may be dyed simultaneously with reactive dyestuffs, e.g. those sold under the (Registered Trade Marks) "Procion", "Cibacron" and "Remazol".  Specifications 664,795 and 915,571 also are referred to.
Patent GB-1086611-A (GB)
Title: High strength prestressed spherical sonobuoy
IPC: F17C1/02
Filed: 1965-03-26
Abstract: 1,086,611. Housings for electrical equipment. SANDERS ASSOCIATES Inc. March 26, 1965 [March 26, 1964], No. 13014/65. Heading H1R [Also in Division G4] The two hemi-spherical shells 12, 13 of a sonobuoy are provided with grooves 23, 24 near their mating edges 20 which engage with protrusions 21, 22 on a split ring 19 surrounding the shell. The assembly is then cooled until an outer ring 18 can be fitted over ring 19. On subsequent expansion the outer ring 18 grips the inner ring 19, pre-stressing the buoy against impact shocks.
Patent GB-884067-A (GB)
Title: Improvements relating to the removal of dissolved solids from liquids
Inventor: KRESSMAN THEODORE ROGER ERNEST
IPC: B01D15/04
Filed: 1960-04-12
Abstract: 884,067. Electro-dialysis. PERMUTIT CO. Ltd. April 12, 1960, No. 13063/60. Addition to 879,181. Class 41. In the process of removing salts from solutions by electro-dialysis as described in the parent Specification, wherein a two-compartment cell each bounded on the cathode side by a cation-permeable selective membrane, and on the anode side by an anionic permselective membrane, and also being filled with respectively cationic and anionic exchange material, the anionic exchange material used is weakly basic, or a mixture of strong and weak base materials, in place of the strongly basic material used in the parent Specification. As weakly basic materials, there may be used compounds containing primary, secondary or tertiary amino groups, with, if desired, some quaternary compounds.
Patent GB-569895-A (GB)
Title: Improvements in and relating to speed control devices
IPC: G05D13/00
Filed: 1943-08-13
Abstract: 569,895. Automatic control systems. DICKINSON, F. H., and LONDON PASSENGER TRANSPORT BOARD. Aug. 13, 1943. No. 13130. [Class 38 (iv)] [Also in Group XXVI] The speed of a turbine alternator 12 is equalized to that of a master device comprising a fly-wheel 1. driven by an electric motor 2 having a brake disc governor 9, 10 through a differential 11 connected to a master control switch 57 which controls a motor 26 to open and close a governor-controlled valve 27 of the turbine : the connection between the differential and the switch includes a second differential 23 to which is connected a device sensitive to load. This device may comprise a wound rotor induction motor, to one winding of which the voltage of an auxiliary alternator 106, driven mechanically from the main alternator, and to the other the voltage of the main alternator transformed in a transformer 14 in opposite phase sequence ; the rotor moves in correspondence with the load angle of the main alternator and its motion is compared with that of a motor 18 driven from the mains 4, 5 which supply the motor 2, under the control of a rotary switch 21 operated by a differential 17. This differential is connected to the differential 23 through a shaft 22. The differential 11 is driven by the fly-wheel 1 and by a synchronous motor 13 supplied by the transformer 14 and its shaft 24 is connected to the differential 23, the motion of which is conveyed to a shaft 28 carrying a pinion 29 operating a train of discs 30, 33, 36 and pinions, e.g. at 10-1 ratio. The shaft 28 and the shafts of the discs carry, respectively, cut-away and notched cams co-operating with followers on a. lever 50 and the shaft 28 carries also a notched cam 52 to engage a rod carrying the switch 57. Movement of the shaft 28 causes this cam to engage the rod and move a pin on it along a slot in the lever 50 ; further movement causes the lever to rock and move the switch 57 to one of its contacts. One of two relays 62, 64 is then energized, and a circuit is completed in one or other direction through the motor 26 to open or close the valve 27. The motor 26 is caused to rotate faster when the speed of the alternator is diverging from that of the constant speed device when it reapproaches this speed by a contact 89 frictionally driven by a disc 83 on shaft 28 towards one or other of contacts 90, 91 to actuate a relay 94 to cut a resistance 73 out of the motor circuit.
Patent GB-1532900-A (GB)
Title: Shaped articles from regenerated chitin
IPC: B29C55/00
Filed: 1976-04-01
Abstract: 1532900 Films and fibres from chitin UNIVERSITY OF DELAWARE 1 April 1976 [16 April 1975] 13175/76 Heading B5B Oriented films and fibres of chitin are obtained by forming an anhydrous solution of chitin, casting or extruding the solution coagulating the film or fibre with an anhydrous coagulating medium and cold drawing the resultant film or fibre. Suitable solvents for the chitin include trichloracetic acid with a chlorinated solvent and chloral or chloral hydrate and the coagulants include ketones especially acetone. The renatured chitin is treated with an alkaline system to neutralize or to leach out the acid, if used.
Patent GB-543978-A (GB)
Title: Improvements in filtering apparatus
IPC: B01D35/26
Filed: 1940-08-19
Abstract: 543,978. Filters ; tripod stands. PATERSON ENGINEERING CO., Ltd., and ROYCE, J. G. Aug. 19, 1940, No. 13199. [Class 46] [Also in Group XIV] A stand for a portable filter comprises clamping bands b, c, which encircle the filter a, and brackets d, detachably connected to the bands and having sockets at their lower end to receive tripod legs e. The brackets d may engage slots in the bands b, c and may be held in position by spring catches f engaging the band b. Gravity hooks g on the ,brackets hold the legs in the sockets. A pump k may be supported by bosses i<SP>1</SP> on a plate i detachably fixed to the bands b, c. Hinged counterweighted plates hare provided on the legs to prevent them sinking into the ground. The detached parts may be packed with other filter accessories in a suitable frame or box.
Patent GB-398951-A (GB)
Title: Improvements in connection with ventilating systems
IPC: F24F13/06
Filed: 1932-05-07
Abstract: 398,951. Ventilators. MUSGRAVE, J. L. and CRITTALL & CO., Ltd., R., 43, Bloomsbury Square, London. May 7, 1932, No. 13215. [Class 137.] A ventilator fitting comprises a number of flat rings A which may be supported at the mouth of a duct B through which air enters or is withdrawn, the coaxial rings being spaced apart so that the external diameter of the first ring is approximately equal to the internal diameter of the air duct, and the external diameter of each succeeding ring is approximately the same diameter as the internal diameter of the ring immediately preceding it. By proportioning the internal diameter of each ring relative to the external diameter of the succeeding ring below it, the direction of discharge of the air can be varied, and an inflow of air induced through the space between the lower rings.
Patent GB-132370-A (GB)
IPC: D06C13/00
Abstract: 132,370. Whiteley, J. B., and Harris, H. H. Sept. 21, 1918. Cropping and shearing.-A device for setting the blades or knives of cropping-machines consists of inclined slides or plates B co-operating with the usual screws A for adjusting the cutting- blades relatively to the guide H. The plates B are adjusted by a handle C, Fig. 2, through a worm D and a pinion E engaging the plate B, the plate 'at the other side of the machine being operated by a wheel on a shaft coupled by a tuba to the shaft of the wheel E. A spaced index is provided to co-operate with the plate to indicate the depth of cut. According to the Provisional Specification, the blocks on which the screws A rest may be raised and lowered by eccentrics adjusted by the aid of a marked dial.
Patent GB-132458-A (GB)
IPC: F16L19/02
Abstract: 132,458. Bosco, V. April 1, 1919 Joint-making packing. - A washer of steel or other hard material to make a joint to stand high pressure has con. centric grooves separated by projections 7 of triangular cross-section which penetrate the surfaces between which the joint is required.
Patent GB-543336-A (GB)
Title: Ultra short wave beacons
IPC: H04B7/10
Filed: 1940-08-21
Abstract: 543,336. Directive wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. Aug. 21, 1940, No. 13286. Convention date, Oct. 19, 1939. [Class 40 (v)] In order to reduce difficulties due to the reflection of short waves by the earth's surface in radio beacon systems, two antennae (or two pairs of antennae) are arranged at different vertical heights and energized alternately as to produce radiation patterns such that the maxima of one antenna coincide with the minima of the other, as indicated in Fig. 2A, so as to produce a substantially smooth effective pattern. In Fig. 2, the di-poles 31, 32 are keyed alternately by a push-pull valve circuit 34, Fig. 3 (not shown), fed with keying and radio frequency, and the energy passing to each di-pole is modulated by condensers 36 driven by a motor 35. In a further system, Fig. 4 (not shown), two pairs of vertical antennae are used, each individual antenna having a parasitic reflecting antenna. The Specification as open to inspection under Sect. 91 also describes (1) an arrangement, Fig. 2 (Cancelled) (not shown), in which two vertical di-poles carried by a mast are fed by separate lines from an oscillator, the relative phase being determined by a phase-adjuster and the spacing of the di-poles; and (2) a course guiding system shown in Fig. 5 (Cancelled) in which overlapping beams are transmitted by two pairs of antennae 51, 52 and 51<SP>1</SP>, 521. Each pair comprises two horizontal V-type antennae 51, 52 arranged one above the other and energized in suitable phase as in Fig. 2 (Cancelled) (not shown). This subjectmatter does not appear in the Specification as accepted.
Patent GB-133355-A (GB)
IPC: C01B32/942
Abstract: 133,355. Becket. F. M. April. 30, 1918. Calcium carbide. -Aggregates for the production of carbide are made by coking a mixture of carbonaceous material, such as bituminous coal, with unburnt limestone, without stirring during the heating. The mixture from the storage bin 3 is passed by the feeding-device 4 to the shallow trays 2, which pass very slowly through the heating-chamber 1. Heating is effected by a burner 7 at the end, and also, if desired, by lateral burners 8. The products of combustion and the carbon dioxide escape through the outlet 9, while the products of the coking operation are mainly given off beneath the apron 6, pass away through the outlet 10, and may be treated for the extraction of by-products and then supplied to the burners 7, 8.