baber/WOPTO huggingface dataset:
Patent GB-1154647-A (GB)
Title: Supervisory Circuit for Unattended Repeaters.
Inventor: HEYES ROGER WALLACE
IPC: H04B17/40
Filed: 1967-09-01
Abstract: 1,154,647. Supervising repeaters. STANDARD TELEPHONES & CABLES Ltd. 1 Sept., 1967, No. 40019/67. Heading H4R. In a carrier current communication system employing uni-directional repeaters in a signalling path, which repeaters are powered over the signalling path, the power circuits of the repeaters are bi-directional and control signals in a first frequency band are passed along the path and through each power circuit in delayed fashion in a direction opposite to the signalling direction causing the repeaters to respond in succession by returning a response signal in a second frequency band over the signalling path. A second path may be provided for signalling in the other direction. The two paths may be independently monitored (at the receiver end) or the two paths may be serially connected through a filter and monitored by a single unit. As shown square wave pulses 22 generated at 21, are differentiated at 23 and applied to the line 1. At the repeater (Fig. 2), each differentiated pulse passes through a low pass filter 8 to the power circuit of the repeater. The power circuit comprises a direct through path comprising a band stop filter 10 and a Zener diode 11 which connects between the low pass filter 8 and a low pass filter 9, and a supervisory unit enclosed in the dashed line 12. The differentiated pulse enters the supervisory unit via a transformer 13 and an amplifier 14 and is delayed and converted to a square waveform by a pair of mono-stable circuits 8 1  and 8 2  and used to close a switch 17 gating a tone from a tone generator 18 to the signalling path. The tone is thus returned to the monitoring unit. The square waveform is also differentiated by a transformer 20 and applied via low pass filter 9 to the transmission path to similarly activate the next repeater in the series. At the monitoring unit (Fig. 4), the tones entering via a band-pass filter 26 are amplified at 27 detected at 28 and applied to a level discriminator 29. If the level is adeqate the tones are replaced by pulses from a generator 30 and applied to a counter 32. The counter is monitored by a comparator 33 which operates an alarm 34 if the count does not reach a given level (the number of repeaters) within a given period. In order to reduce noise errors the pulses pass through a switch 31 closed at the appropriate moment by the previously passed pulse fed back via a delay 35. In order to assess the performance of a particular repeater a peak reading voltmeter is connected in at the appropriate moments by a switch 38 controlled by an adjustable comparator 39. At the repeater additional monostables 15<SP>1</SP>, 16<SP>1</SP> and a switch 5 opened by a marginal relay (not shown) when a fault caution detected from another parameter exists, may be provided. This latter type of fault is a non-disabling fault and to monitor repeaters beyond such a faulty repeater, additional circuitry (Fig. 4), is provided in the monitoring unit to insert dummy response pulses.
Patent GB-917364-A (GB)
Title: Improvements in or relating to racks for holding wine glasses and like articles, more particularly under mobile conditions as in vehicles, ships or aircraft
IPC: A47B81/04
Filed: 1960-11-22
Abstract: 917,364. Racks. UNSWORTH, A. R. Nov. 16, 1961 [Nov. 22, 1960], No. 40031/60. Class 52 (5). A glass-holding rack comprises a plate member, or members 11, 12 having at least one slot 13 formed therein, or therebetween, wherein glass stems may be engaged, and means 16 for bearing resiliently against and thereby locating the bases of said glasses against accidental displacement from the slot. A back plate 10 receives at its bottom the beaded ends 21a and 15a of the plate member 12 and a member 15 respectively, the latter member 15 serving to hold against the members 11, 12 a resilient interlining 16 e.g. of sponge rubber. The plate 11 and member 15 are similarly attached at the top of the back plate 10. For support by a wall x the divergent sides 10a of the back plate 10 slidably engage recessed portions 18a of wall brackets 18, lugs 10b simultaneously engaging shoulders 18c and catch members 20 engaging lugs 18d, the resilient interlining 16 being utilized to bias the catch members 20 to the engaged position.
Patent GB-823496-A (GB)
Title: Improvements in method of preparing high purity silicon
Inventor: KELLY HENRY CURTIS
IPC: C01B33/04
Filed: 1957-12-27
Abstract: Silicon tetrahydride is produced by reacting silicon tetrahalide with an aluminium-containing hydride in solution in a polyethylene glycol dialkyl ether, e.g. tetra-ethylene glycol dimethylether.  The silicon tetrahalide may be silicon tetrachloride.  The aluminium-containing hydride may be aluminium hydride or sodium or lithium aluminium hydride.  The silicon hydride may be condensed at - 196 DEG C., after cooling to - 160 DEG C. to remove volatile impurities.  Silicon tetrachloride may be condensed into a solution of lithium aluminium hydride in tetraethylene glycol dimethyl ether maintained at - 196 DEG C., the solution temperature then being allowed to rise to room temperature with stirring (Example 1), or a solution of silicon tetrachloride in tetraethylene glycol dimethyl ether may be added drop-wise to a solution of lithium aluminium hydride in tetraethylene glycol dimethyl ether at room temperature (Example 2).  Silicon may be produced by passing the gaseous silicon hydride produced in Example 2 through a heated quartz tube after cooling to - 160 DEG C. to remove volatile impurities.
Patent GB-888929-A (GB)
Title: Process for preparation of lower alkyl borates
Inventor: JR CHARLES OREN WILSON
IPC: C07F5/04
Filed: 1958-12-16
Abstract: An alkyl borate is made by preparing an admixture of a sodium and/or calcium borate salt, a polyhydric alcohol boiling within the range from 175 DEG C. to 375 DEG C., and ammonium chloride or sodium acid sulphate, distilling the mixture to separate the water therefrom until the mixture is substantially anhydrous, admixing the anhydrous mixture with a saturated aliphatic monohydric alcohol containing from one to three carbon atoms, distilling the reaction mixture and removing an azeotrope of the borate ester of the monohydric alcohol and the monohydric alcohol as overhead, and separating the said ester from the azeotrope.  Preferred borate salts are borax, colemanite and ulexite.  The preferred polyhydric alcohols are ethylene glycol and diethylene glycol and the preferred mohydric alcohol is methyl alcohol.  Many other starting materials are specified.  The azeotrope may be separated by such methods as fractional distillation, washing with sulphuric acid, or treatment with carbon disulphide to form an azeotrope of carbon disulphide and alcohol which is distilled from the borate ester.
Patent GB-938270-A (GB)
Title: Improvements in or relating to anchoring missiles adapted to be fired by cartridge-operated tools
IPC: F16B19/14
Filed: 1960-11-25
Abstract: 938,270. Gas checks; cartridge-operated tools. SOC. CIVILE D'ETUDE DE PROCEDES DE SCELLEMENT. Nov. 25, 1960 [Jan. 5, 1960], No. 40700/60. Classes 9 (1) and 119. A missile for cartridge-operated tools comprises a bolt p and a gas check 1 of non-rigid material, preferably plastics. The gas-check has a cylindrical front portion 1<SP>1</SP> which slidingly fits the barrel of the tool and a rearwardly flared frusto-conical portion 1<SP>2</SP>. The head t of the bolt is shown encased in the portion 1<SP>2</SP> and has a diameter somewhat larger than that of the band so that slight deformation of the rim of the head t as well as of portion 1<SP>2</SP> occurs before the missile is propelled from the tool. A second embodiment employs a gas-check which encases the bolt as in the first, and has a rearwardlyflared portion, but the rear wall is recessed as in Specification 876,745. In a third embodiment an axial bore is formed in the front face of the gas - check into which a bolt with a screwthreaded rim may be fitted. A barrel with a conical bearing surface C<SP>2</SP> is shown at Fig. 7 so that the missile may be inserted from the rear through chamber C<SP>1</SP> prior to the insertion of a cartridge.
Patent GB-1176326-A (GB)
Title: Improvements in and relating to Semiconductor Devices
IPC: H01L23/498
Filed: 1967-03-13
Abstract: 1,176,326. Semi-conductor devices; semiconductor circuit assemblies. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 13 Sept., 1966 [24 March, 1966], No. 40804/66. Headings H1K and H1R. A semi-conductor device comprises an insulating substrate 1 (Fig. 1) with metallization at three levels 10, 16, 15. An active semiconductor device, e.g. the planar silicon transistor shown, is mounted on the metallization at the lowest (or the intermediate) level which is connected to metallization at the upper level to provide an external collector connection. The interdigitated emitter 21 and base 22 are connected to metallization at the intermediate (or lowest) level which extends on to the top level to provide external connections 13, 15. In the embodiment the substrate is of alumina, beryllia or boron nitride extruded and cut to the form shown, or of moulded glass. The contoured surface is metallized overall by sputtering with titanium and then vapour depositing first platinum and then gold, which is thickened by electroplating if desired. Alternatively, it is metallized by the molybdenum-manganese process. Slots 7 and 8 are next cut to isolate parts of the metallization, though this may be avoided if metallization if effected through a mask. After attaching the transistor by heating to 400‹ C. wires 25, 26 are thermocompression bonded to its electrodes and the metallized intermediate levels and then embedded in epoxy resin. The arrangement is such that the interconnections and resin lie wholly within the channel so that the device is protected against damage and can be bonded directly to contact channel so that the device is protected against damage and can be bonded directly to contact areas of a printed circuit in an inverted position (Fig. 3, not shown). One or more diodes or a tetrode may be mounted on modified substrates providing all the requisite external connections at the upper level.
Patent GB-1192098-A (GB)
Title: Process for preparing Self-Condensation Products
IPC: C07C41/01
Filed: 1968-08-27
Abstract: 1,192,098. Preparation of diphenoquinones. MITSUBISHI EDOGAWA KAGAKU K.K. 27 Aug., 1968 [31 Aug., 1967; 15 April, 1968; 13 May, 1968], No. 40872/68. Heading C2C. [Also in Division C3] Diphenoquinones are obtained by reacting oxygen with a compound of formula where X is hydrogen, chlorine, bromine or iodine, R<SP>1</SP> is hydrogen or a hydrocarbon, halohydrocarbon or hydrocarbonoxy radical, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are the same as R<SP>1</SP> or are halogen and n is 1 or more, in a solvent in the presence of a catalyst containing ruthenium, rhodium, palladium, iridium or platinum. The catalyst metal may be carried on or mixed with lithium, magnesium, calcium, barium, aluminium, titanium, vanadium, chromium, molybdenum, tungsten, manganese, nickel, iron, cobalt, zinc, copper, silicon, tin or boron or an oxide thereof, or an alkaline earth metal carbonate or sulphate, or activated carbon or silk. In an example 2,2<SP>1</SP>,6,6<SP>1</SP>-tetra-t-butyl diphenoquinone is obtained by reacting oxygen with 2,6-di-t-butyl phenol using as catalyst palladium on a magnesia-alumina carrier.
Patent GB-1016505-A (GB)
Title: Method of recovering organic solvents from coagulation and/or stretching baths
IPC: D01F6/18
Filed: 1963-10-16
Abstract: 1,016,505. Polyacrylonitrile spinning. SNIA VISCOSA SOC. NAZIONALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. Oct. 16, 1963 [Oct. 22, 1962], No. 40875/63. Heading B5B. Organic solvents are recovered from coagulation and stretching baths used in the wet spinning of polyacrylonitrile, and comprising organic solvents and concentrated aqueous solutions of potassium formate or acetate, by extraction, using monomeric acrylonitrile as an extracting agent. Extraction may be effected at room temperature and in one stage, or in two or more successive stages. Desirably the congulating or stretching bath contains 25-45% by weight of water and 5-40% by weight of organic solvent, especially dimethylformamide. In general, the bath is extracted with acrylonitrile and on standing separates into an upper layer containing mainly dimethyl formamide and acrylonitrile, with a small proportion of water, and a lower layer containing an aqueous solution of the potassium salt, a small proportion of dimethyl formamide, and a smaller proportion of acrylonitrile. The proportion of water in the upper layer may be reduced by salting-out with potassium formate or anhydrous potassium acetate, whereupon separation occurs into two layers, an upper layer consisting of mainly of dimethyl formamide and acrylonitrile, with a small proportion of water, and a lower layer consisting of the concentrated aqueous solution of the salt. This lower layer may be added to the first mentioned lower layer and recycled into the spinning process after removal of the acrylonitrile and suitable dilution, while the combined upper layers may be purified by passage through carbon granules or ion-exchange resins, distilled and recycled for polymerization. The method is especially useful where the polyacrylonitrile is obtained by polymerization of monomeric acrylonitrile in dimethyl formamide.
Patent GB-960435-A (GB)
Title: Microwave transmission system
IPC: H04B7/155
Filed: 1960-12-01
Abstract: 960,435. Multiplex radio signalling. WESTERN ELECTRIC CO. Inc. Dec. 1, 1960 [Dec. 24, 1959], No. 41338/60. Heading H4L. In order to bridge a gap caused by a river 11 in a waveguide system 12, 13 in a broadband microwave communication system, equipment is provided in a terminal building 14 to divide the broadband signal on the guide 12 into a plurality of narrower band channels and translate the frequency of each into a common carrier band. The narrower band channels are supplied via waveguides to respective antenna systems 18, 22, 23, each antenna system having n separate feeds and radiating n lobes. In this way provision is made for n<2> channels. The signals are arranged to be radiated in directions displaced by acute angles from each other and are received by three corresponding antenna systems 24, 25, 26, on the opposite bank. Thus lobe 1 of antenna 18 is received upon lobe 1 of antenna 24, lobe 2 upon lobe 2 of antenna 25, lobe 3 upon lobe 3 of antenna 26, and so on. The received signals are translated in frequency and recombined by equipment in building 27 for further transmission upon guide 13. Specifications 574,610 and 606,926 are referred to.
Patent GB-1510807-A (GB)
Title: Apparatus for determining the position of a focal plane
IPC: G02B7/32
Filed: 1975-10-09
Abstract: 1510807 Photoelectric focus detection ERNST LEITZ WETZLAR GmbH 9 Oct 1975 [21 Dec 1974] 41378/75 Addition to 1472454 Heading H4D Apparatus for determining the position of a focal plane of an image within an optical device comprises a pair of optical deflecting systems 19, 20 so arranged in front of an optical imaging system 10 that each half pupil thereof receives light exclusively from a respective deflecting system, an optical grating 11 of a spatial frequency filter disposed at least in the vicinity of the focal plane of the imaging system, means 15, Fig. 1 (not shown) for effecting relative motion between the image and the grating, photo-electric receivers 14-17 to provide output signals in response to respective partial light fluxes from the spatial frequency filter, and means (not shown) to process these signals to provide further signals indicative of the required position. This apparatus is stated to be an improvement in or modification of that of Parent Specification. In order to detect and counteract or compensate for changes in transmission characteristics of any of the paths affecting the image position, there are provided means 22 to generate a reference beam, a mark carrier 23, and means such as 21, Fig. 2, or 25 and 26, Fig. 3, to cause the beam to pass through the apparatus to grating 11 (or another mark carrier), thence to a photo-electric receiver 24 whose output indicates the position of mark carrier 23 relative to grating 11. The spacing of the lens and the image plane may be altered by means of a double wedge 30-33. Wedge elements 30, 32 are movable, and their positions are controllable by signals derived from the reference and the image beams respectively. As well as providing compensation for changes in optical characteristics, this arrangement may be used for automatic focusing.
Patent GB-1215188-A (GB)
Title: Improvements in or related to the carburetion of spark-ignition engines
Inventor: COATES MICHAEL
IPC: F02M1/00
Filed: 1968-08-30
Abstract: 1,215,188. I. C. engine carburetters; Jet pumps. M. COATES AND J. SWITHENBANK. Aug.15, 1969 [Aug.30, 1968], No.41409/68. Headings F1B and F1E. A method of carburetting a spark-ignition engine comprises using a flow of vapourized fuel under pressure to eject to the engine a mixture of the vapourized fuel and the air requirement of the fuel, the air being induced by and into the fuel flow and mixed with the fuel as a result of its induction. The fuel is either a liquid fuel, e. g. petrol, which is pumped through a heat exchanger to vapourize it or is a low pressure gas, e.g. propane or butane, which issues from a storage bottle in vapour form at, say, 100 p. s. i. and is passed through a heat exchanger to prevent freezing. In either case the heat exchanger uses heat from the engine cooling water or from the engine exhaust manifold or, at starting, from a pilot heater. The vapourized fuel is passed via a throttle valve 3, Fig. 3 and a pipe 29 to an inlet connection 12, Figs. 3 and 4, of a Coanda ejector, where it passes via an annular chamber 13 and an annular gap 14 into a divergent tube 16 thereby entraining air into the tube 16. The resultant mixture is of essentially constant mixture ratio over the whole range of running conditions. The mixture ratio can be set to the stoichiometric value by adjusting the gap 14 by means of a screwed ring 18. Alternatively, the mixture ratio may be raised automatically, e. g. by pneumatic control of the gap. Other forms of ejector may be used instead. In addition to the throttle valve 3, a further throttle valve 8 may be provided in the tube 16 to ensure smooth idling. Both valves 3, 8 are controlled by a common cable 25. Vaporization of liquid fuel may be assisted by mixing a small proportion, say 10%, of the exhaust gases with the fuel before it reaches the ejector. In addition, the vapour feed line may pass a hot spot.
Patent GB-1284276-A (GB)
Title: Improvements in load control of ship's engines
IPC: F01L13/00
Filed: 1969-08-20
Abstract: 1284276 Conjoint control of engines and propellers KARLSTADS MEKANISKA WERSTAD AB 20 Aug 1969 [21 Aug 1968] 41439/69 Heading B7V [Also in Division G3] In a system in which the speed of ships' engines is automatically controlled by adjustment of a fuel supply pump, the pump setting is compared with a predetermined limit value and if this is exceeded a signal in the form of a pulse train is provided which operates a servosystem to adjust the pitch of the propeller(s) in a stepwise manner, one step per pulse, or if the limit is grossly exceeded continuous adjustment may be made until the setting is within the range of stepped operation. As shown, the pitch of a single propeller 4 is controlled from the bridge by line 7 or by the servo 6 in response to pulses generated at 9 when either of sensors 11 on respective engines 1, 2 detect that the fuel pump setting has exceeded upper or lower limits. Alternatively, the sensors may respond to one limit only. 10 is a "selector" and either activates the pulse generator 9 or transmits a continuous correction signal on line 12. The servo system 6 is electro-hydraulic (Fig. 2, not shown) and is arranged so that the magnitude of each step adjustment depends upon the prevailing pitch, being zero when the pitch is zero. The pulse generator incorporates a delay so that short term errors are ignored. Both the pulse duration and frequency are said to be adjustable, and the engine speed is kept constant by undisclosed means.
Patent GB-845345-A (GB)
Title: Improvements in or relating to apparatus for incorporating a reagent into a flowing stream
IPC: C02F1/68
Filed: 1958-12-23
Abstract: 845,345. Mixing apparatus. VOGELMANN, E., [trading as CILLICHEMIE E. VOGELMANN]. Dec. 23, 1958 [Dec. 27, 1957], No. 41446/58. Class 86. In apparatus for adding a reagent to a flowing liquid, a part of the stream is diverted to a chamber 11 where it is dosed with the reagent before it is returned to the main liquid flow, the reagent 53, when in powder form, being held in the chamber whilst the diverted liquid flows into an expansible bag 31 and out of the bag through passages 321 in a bottom member 32; and, when in liquid form, is contained in the bag 31, Fig. 2, whereby the pressure of the diverted liquid flow squeezes reagent out of the bag at 33 into the liquid as it leaves the chamber 11 to be returned to the main flow. A restriction 42 generates the pressure head to produce the diverted flow through the pipes 43. In Fig. 1, the member 32 is guided by a central rod 122 and, because of its weight and convexity, keeps in contact with the powder 53 as it diminishes in quantity, to ensure that the liquid is contacted with the reagents. In a modification, the expansible bag 32 is of bellows form, and the member 31 is flat and is provided with a central outlet member for the diverted liquid, radial passages in the member directing the liquid into the powder. A by-pass, controlled by a valve, is arranged between the pipes 43, 44, the pipe 43 being connected to a central opening in the cover 14 to direct the liquid into the bellows.
Patent GB-1163724-A (GB)
Title: Hardening Photographic Binder Layers
IPC: G03C1/053
Filed: 1966-09-16
Abstract: 1,163,724. Hardening photographic materials. EASTMAN KODAK CO. Sept. 16, 1966 [Oct. 28, 1965], No. 41500/66. Heading G2C. Photographic binder layers having a binder mixture containing gelatine and 20 to 80 per cent by weight of a water-insoluble polymerized vinyl compound are hardened by incorporating formaldehyde or a precursor thereof and a halogensubstituted aldehyde acid (e. g. mucochloric or mucobromic acid) or salts thereof. The layers may be emulsion, filter or anti-static layers and may contain binders other than gelatine and the vinyl polymer. The vinyl polymer may be a homopolymer of alkyl acrylates or methacrylates or copolymers of these with a wide variety of vinyl compounds such as esters, amides, nitriles, ketones, halides, ethers, unsaturated acids and esters thereof and olefins. Preferred vinyl polymers are co-polymers of acrylates or methacrylates with acrylic acid and a sulphobetaine of the formula: or copolymers of acrylates or methacrylates with sulphoesters of the formula;- where R1, R2, R3 and R5 are hydrogen or alkyl and R1, R4 and R6 are divalent hydrocarbon radicals and Ra can also be an aliphatic divalent hydrocarbon radical in which the chain is interrupted by oxygen and/or sulphur. Precursors of formaldehyde which may be used are formaldehyde alkali metal bisulphite compounds, methylol derivatives of hydantoins or primary aliphatic nitro alcohols, water-soluble hydantoin-formaldehyde resinous products and 2-nitro-1, 3-propandiol. Additional aldehyde hardeners may be present.