baber/WOPTO huggingface dataset:
Patent GB-1514078-A (GB)
Title: Pilot-operated valve having constant closing rate
IPC: F16K47/10
Filed: 1976-09-15
Abstract: 1514078 Valves AUTOMATIC SWITCH CO 15 Sept 1976 [19 Sept 1975] 38108/76 Heading F2V The rate of closing of a pilot-operated main valve 22 is maintained constant regardless of pressure variations at the inlet 13 and outlet 14 by providing a flow regulator 46 in the inlet 32 to a chamber 20 controlled by the pilot 39. The regulator 46 is of rubber with a central orifice which is reduced in cross-section by an increase in the pressure drop across the regulator. The passage 32 may be omitted and the regulator mounted in an orifice of the main valve. Actuation of the pilot may be effected electrically, pneumatically or hydraulically.
Patent GB-303167-A (GB)
IPC: C10C1/04
Filed: 1928-12-27
Abstract: 303,167. Barrett Co., (Assignees of Millers, S. P.). Dec. 29, 1927, [Convention date]. Condensing processes; pitch.-Low and high carbon tars are separately condensed from gases collected separately during early and later portions of the coking operation in coke oven or other coal distillation plant. A coke oven plant has two collector mains 3, 4, the uptake 2 from each oven &c. having valves 5, 6 for connecting it with one or other of the mains. Cross-over mains 7, 8 lead to multipass water-cooled condensers 11, 12 of indirect type. The mains 3, 4 are supplied with admixed tar and ammonia liquor through pipes 15, 16 and the mains 7, 8 with ammonia liquor through spray pipes 9, 10. Tar and ammonia liquor escape from the collector mains through pipes 19, 20, and may be pumped back to the appropriate mains, excess tar being collected in wells 21<1>, 22<1>, and pumped to storage tanks 23, 24. Tar or tarry oils thrown down in the crossover mains are passed to decanting vessels 29, 30, separated from ammonia liquor and stored in tanks 29<1>, 30<1>. The light tars or tarry oils from the condensers are discharged into decanting vessels 39 - - 42, similarly separated from ammonia liquor and stored in tanks 43 - - 46. In a modification, condensate from each pass may be separately treated. In an example to obtain a low carbon tar, gases from the first third of the coking operation are passed through main 3 and the remainder through main 4. A high carbon tar may be obtained by collecting the gases from the last third of the coking period in main 4. In either case tar recovered from the collector main is relatively heavy and the lighter tar or oil from the condensers may be employed separately or blended with the heavy tar or other products. A single condenser may replace the condensers 11, 12 when a single tar or tarry oil fraction is required. Or direct contact condensers in which water or ammonia liquor is sprayed into the gases may be employed. Modifications of the plant to obtain both a low and a high carbon tar or several tars comprise the provision of three or more mains. Thus gases from an initial period and a final period may be collected in two of the mains and the remaining gases directed into the third main from which intermediate tars are obtained. In one form a coke oven battery is divided into three sections each having two collector mains, three of the mains being independently operated to obtain varying high or low carbon tars, and lighter tars of varying character being obtained in two condensing systems each of which is connected to three mains. Specifications 289,378, 303,163, 303,164, and 303,165 are referred to. Reference has been directed by the Comptroller to Specification 17494/01.
Patent GB-955177-A (GB)
Title: Voltage regulator circuits
Inventor: TAYLOR WALTER
IPC: G05F1/38
Filed: 1961-10-25
Abstract: 955,177. Automatic control of voltage. MINISTER OF AVIATION. Oct. 10, 1962 [Oct. 25, 1961], No. 38191/61. Heading G3R. In a voltage control arrangement a transformer T1 supplies a load, across 300V terminals, through a full-wave rectifier D1 and the load voltage is stabilized by varying the load on a transformer T2 having a primary winding W2 in series with a primary winding W1 of the transformer T1. The voltage at a tapping of a potential divider R1, R2, P1, across the load, is compared with that of a Zener diode Z1 by a long-tailed pair comprising transistors Q1,Q2. The difference voltage is amplified by a transistor Q3 which varies the bias on transistors Q4, Q5 to load the transformer T2 so as to tend to maintain the load voltage constant. It is stated that the transistor Q3 can be replaced by a bistable threshold circuit controlling the load on the transformer T2 by rendering the transistors Q4, Q5 respectively conductive and non-conductive. It is also stated that the alternating voltage across a load connected to a secondary W3 of the transformer can also be stabilized by this arrangement. The supply to the transistors Q1- Q3 is derived from a 24V source and stabilized by a Zener diode 22.
Patent GB-904480-A (GB)
Title: A process for desulphurising liquid hydrocarbons
IPC: F02B3/06
Filed: 1960-11-08
Abstract: Liquid hydrocarbons, e.g. crude oils, mineral oil products such as white oil or diesel oil, coking plant products such as benzine or xylene, and synthetic hydrocarbons, are desulphurized by p  treatment with an organo-sodium compound.  If preferred, the organo-sodium compound may be formed in situ by reacting either an organic halogen compound, e.g. chloro- or bromobenzene, benzyl or butyl chloride, or butyl or cyclohexyl bromide, or an organic substance containing an active hydrogen atom such as pentadiene, with a dispersion of sodium, the sodium generally being present in excess.  The sodium sulphide formed may be removed by centrifuging, filtering or by washing with water, suitably after the excess sodium has been fixed with methanol.
Patent GB-344946-A (GB)
Title: Improvements in or relating to furnaces for cremating or incinerating
IPC: F23G1/00
Filed: 1929-12-16
Abstract: 344,946. Crematory furnaces. LUDWIG, K., 65, Hansastrasse, Hamburg, Germany. Dec. 16, 1929, No. 38449. [Class 51 (ii).] A crematory or incinerating furnace having adjustable air nozzles o, p at the sides of the combustion chamber b for delivering air on to the object being burned is provided at the rear with a chamber d to which air is supplied through a passage k to complete the combustion of smoke &c. deflected downwardly into the chamber d by a depending baffle h. The combustion chamber is heated initially by gas and air supplied through channels m, n which are closed as soon as the chamber is heated up to such a temperature that combustion may be maintained by air supplied through the nozzles o, p. Residues are pushed from the combustion chamber over the bridge i on to the grate e of the chamber d.
Patent GB-1108560-A (GB)
Title: Preparation of a diazo resin salt
Inventor: HOULE JAMES FRANK
IPC: C08G12/08
Filed: 1965-02-26
Abstract: A cadmium salt of a light-sensitive diazo resin is obtained from sulphuric acid solution by (a) treating the solution with a cadmium salt, (b) separating the precipitated cadmium salt and treating it with BaCl2 in excess of that required to precipitate the sulphate ion remaining and (c) extracting the resin salt from the resulting mixture of solids.  The resin solution is obtained by adding an intimate mixture of a diazo aniline salt and an aldehyde to concentrated sulphuric acid.  In the Example a mixture of a p-diazodiphenylamine-zinc chloride double salt and paraformaldehyde is added to conc. H2SO4 below 5 DEG  C.  The solution is mixed with ice and excess CdCl2, then isopropanol is added and the slurry filtered.  The solids are slurried with water and BaCl2, then filtered and twice extracted with HF solution and once with water. The combined filtrates are treated with excess CdCl2, then with isopropanol and the resultant slurry filtered.
Patent GB-1087262-A (GB)
Title: Method of making a former for making cavities in concrete
Inventor: STARK CHARLES HENRY
IPC: E04G15/06
Filed: 1964-09-22
Abstract: 1,087,262. Floor shuttering. OWENS-ILLINOIS Inc. Sept.22, 1964, No. 38623/64. Heading E1S. A former for making cavities, particularly in concrete floors, is constructed by securing to floor shuttering 10 a bottom panel 11, surrounding it with a side wall 14 having bottom tabs 16 secured under the panel, inserting stiffening and closing the top with another panel. The stiffening comprises a number of egg box type grids.
Patent GB-1495015-A (GB)
Title: Monitoring and/or control of burners
IPC: F23N5/16
Filed: 1975-09-01
Abstract: 1495015 Controlling burners BRITISH PETROLEUM CO Ltd 1 Sept 1975 [4 Sept 1974] 38639/74 Heading F4T [Also in Division G3] A method of monitoring and/or controlling a burner comprises modulating the flow of one or more reactants to the burner, sensing the pressure fluctuations in the flame and generating therefrom an electrical signal and comparing this signal with a base signal of the same frequency as the modulation. The modulation, preferably in the range 10-100 Hz, is achieved by an electronically vibrating reed or by a pulsating membrane. The pressure fluctuations are sensed by a microphone and the signals are compared by a circuit comprising a phase sensitive detector whose output is integrated and the resultant signal used to modify the mixture ratio to the burner to promote optimum (i.e. stoichiometric) combustion.
Patent GB-875443-A (GB)
Title: Improvements in or relating to electrically wound spring or weight timing mechanisms
Inventor: LOVEGROVE HENRY JOSEPH
IPC: G04C11/08
Filed: 1956-12-20
Abstract: 875,443. Clocks. SANGAMO WESTON Ltd. Oct. 22, 1957 [Dec. 20, 1956], No. 38900/56. Class 139 In a spring driven clock the spring is continuously wound by a synchronous electric motor through a slipping clutch and the balance is forced to oscillate in synchronism with the alternating current supply. A shaft 20, Fig. 3, driven by the synchronous motor carries an eccentric pin 22 which through a pivoted lever 24 and a pin 27 reciprocates a bar 28 in a U- shaped frame 29 adjustable about the balance staff axis. The outer coil of the balance spring 35 is located in a notch 34 in a depending lug 33 of the bar 28 so that the balance is forced to oscillate in synchronism with the alternating current supply. Upon supply failure, the main spring drives the train, the bar 28 remaining in the angular position to which it was initially adjusted. The lever 24 may be replaced by a connecting rod.
Patent GB-1100296-A (GB)
Title: Preparation of a chromatographic medium
IPC: B01J20/281
Filed: 1965-09-14
Abstract: Influenza virus is purified by chromatographing on a column containing specially treated calcium dihydrogen phosphate (see Division C1). In an example, allantoic fluid containing the virus and 0.01M sodium trimetaphosphate and having pH of 9.0 was passed through the column, the column washed with 0.01 sodium trimetaphosphate and the virus eluted with 0.5M phosphate buffer.ALSO:Calcium dihydrogen orthophosphate is treated in suspension with an alkaline solution to adjust the pH thereof to 6-7 and thereafter washed with water until the washings have pH from 7.2 to 7.4.  Optionally, the thus treated salt may be treated with sufficient alkali metal trimetaphosphate, such as sodium trimetaphosphate (No. 3 P3 09) to raise the pH of the salt to 7.8 to 8.2.  In the first treatment 1 to 5 parts by weight of water to one part salt are mixed and the alkaline solution stirred in over 1/2 -2 hours at 10-40 DEG  C.  In the second treatment the trimetaphosphate solution may be of 0.01 molar content.  The treated salt is effective in adsorbing influenza virus.ALSO:Calcium dihydrogen orthophosphate for use as a chromatographic medium is treated in suspension with an alkaline solution to adjust the pH thereof to 6-7 and thereafter washed with water until the washings have pH from 7.2 to 7.4.  Optionally, the thus treated salt may be treated with sufficient alkali metal trimetaphosphate, such as sodium trimetaphosphate (No. 3 P3 09) to raise the pH of the salt to 7.8 to 8.2.  The treated salt is effective in adsorbing influenza virus from for example allantoic fluid, preferably at pH about 8.  The virus may be eluted with phosphate buffer.
Patent GB-1180645-A (GB)
Title: Improvements relating to Mowers
Inventor: WHITTALL RAYMOND FRANK
IPC: A01D34/86
Filed: 1967-05-30
Abstract: 1,180,645. Mowers; hitches. ORCHARD EQUIPMENT Ltd. 29 May, 1968 [30 May, 1967; 26 Aug., 1967], Nos. 24812/67 and 39364/67. Headings A1F and A1P. A mower comprises a plurality of rotatable scythe-like cutters 21 having parallel axes and mounted on a casing 10 and a further auxiliary cutter mounted on a swinging arm 60 at one lateral end of the casing, the arm 60 being adapted to move arcuately about an axis 61 parallel to the cutter axis. The swinging arm 60 is urged forward by spring 80 extending between stop 81 on the casing and stop 82 on the ram 83 of an hydraulic cylinder 85. When a probe 90 attached to the swinging arm 60 hits an obstacle it is displaced towards the arm 60 and acts via rod 93 to close valve 94. Consequently pressure builds up in the hydraulic circuit and ram 83 is displaced, swinging the arm backwards in the direction F. The hydraulic circuit comprising flexible pipes 96, valve 94 and hydraulic cylinder 85 may be connected to the hydraulic system of the tractor. The swinging arm 60 is journalled to pin 67 to allow movement in a vertical plane. The end cutters have castor wheels or convex shaped .skids 35 secured to a square stem 36 in bearing 37 welded to the casing 10. By turning the bolt 36a against the action of a biasing spring 37 the cutter height is adjusted. The mower may be mounted on the front, rear or sides of a tractor and the cutters are coupled together and driven from gearbox 24. In the rear position two alternative positions are provided for the mower which may be moved from one to the other by swinging about swivel link 43 and securing bolts 45, 46 in slot 44. The cutters may be driven by a hydraulic motor or motors mounted on the casing. There may be a swinging arm at each end of the casing.
Patent GB-1334130-A (GB)
Title: Ion exchange method
IPC: B01J47/10
Filed: 1971-08-23
Abstract: 1334130 Ion-exchange DEGREMONT SOC GENERALE D'EPURATION ET D'ASSAINISSEMENT 23 Aug 1971 [21 Aug 1970] 39434/71 Heading B1J Ion exchange is carried out with a liquid containing solid particles by stirring the exchanger in contact with the liquid and then washing with a rinsing liquid at such a rate as to separate the suspended solid particles. Agitation may be with gas. The process may be regeneration with milk or lime.
Patent GB-874164-A (GB)
Title: Improvements in or relating to the preparation of citronellol and its aluminium intermediates
IPC: C07F5/06
Filed: 1958-12-08
Abstract: The invention comprises tricitronellyl aluminium, which may be prepared by adding aluminium hydride in ether solution to 2,6-dimethyl-2,7-octadiene, or by displacement of the alkyl groups in a trialkyl aluminium in which the alkyl groups are of the structure. <FORM:0874164/IV (b)/1> by 2,6-dimethyl-2,7-octadiene.  If desired the aluminium hydride may be prepared in situ by treating lithium aluminium hydride with an ether solution of anhydrous aluminium chloride or by reacting lithium hydride with aluminium chloride in ether.  Other suitable solvents are tetrahydrofuran and diethylene glycol dimethyl ether.  Tricitronellyl aluminate is prepared by oxidising tricitronellyl aluminium with a stream of dry air. Citronellol may then be obtained by hydrolysis of the tricitronellyl aluminate.  2,6-dimethyl-2,7-octadiene is obtained by hydrogenation with a Raney nickel catalyst of a -pinene (which may be obtained from American turpentine).  The hydrogenated product, pinane, may be pyrolysed in the presence of a mildly acidic catalyst, desirably on the surface of an absorbent such as pumice to yield a mixture from which 2,6-dimethyl-2,7-octadiene may be obtained by fractional distillation.
Patent GB-1390587-A (GB)
Title: Retainer for sheet transfer in sorting machine
IPC: B07C1/04
Filed: 1973-08-22
Abstract: 1390587 Delivering sheets NORFIN Inc 22 Aug 1973 [13 Sept 1972] 39782/73 Heading B8R A sheet distributer for conveying sheets past a plurality of receiver shelves 12, Fig. 3, and deflecting them on to selected shelves by deflector means 14, Fig. 2, indexable along the conveying path, as described in Specification 1,153,665, comprises means for retaining sheets in contact with conveyer belts 13, 26 until they are deflected, said means consisting of elongated strands 40 of nylon, cotton, polyester or other material, secured at one end to a bracket 41 and each secured at the other end to a coil spring 42 the deflector means carrying a guide tube 44 for each strand, the strand passing through the tube so as to be diverted laterally out of the path of a sheet on to a shelf. Further strands 45 may be suspended from the tubes.
Patent GB-1307193-A (GB)
Title: Sliding clasp fasteners
IPC: A44B19/40
Filed: 1971-08-26
Abstract: 1307193 Shaping sliding clasp fasteners S W SPINDLER 26 Aug 1971 [26 Aug 1970] 40156/71 Heading B5A [Also in Division E2] A process of making sliding clasp fastener elements comprises forming two filaments 1, 2 of thermoplastic material into generally regular, serpentine configurations as shown in Fig. 1, positioning them in anti-phase overlapping relationship, joining the filaments together by welding (e.g. ultrasonically) along the central longitudinal axis of the assembly forming engageable heads 9, 10, Fig. 4, in the welding operation, preferably by means of welding plates 12, 13, dividing the welded assembly along its central longitudinal axis to form two separate rows (one shown in Fig. 5) of fastener elements, and joining the rows of elements to supporting tapes 7, 8 either prior to or after division of the assembly. Preferably spacer members, e.g. wires 11, Fig. 4, are used during the welding operation to maintain the upper and lower parts of the elements spaced to enable engagement of the heads 9, 10. In addition or alternatively the filaments may be bent at 3<SP>1</SP> and 4<SP>1</SP>, Fig. 3, before welding. The filaments may be welded or sewn to the tapes (Fig. 6, not shown).
Patent GB-1138128-A (GB)
Title: Positioning systems
IPC: G11C13/04
Filed: 1967-09-04
Abstract: 1,138,128. Read-only stores. INTERNATIONAL BUSINESS MACHINES CORP. 4 Sept., 1967 [12 Jan., 1967], No. 40317/67. Heading G4A. Positioning means is controlled by position detecting means responsive to the frequency pattern produced by a Lippmann film registration area in or on the object to be positioned. As described, the object is a Lippmann film optical read-only storage plate, i.e. a transparent photographic plate in which information is stored as light reflecting layers with characteristic spacing by directing light of selected frequencies at areas of the plate e.g. by use of lasers, grating, and electro-optic deflector, to set up standing waves, then removing the plate, developing it, and replacing it. Data is read using selected frequency light again, a grating to separate the frequencies reflected, and photodetectors. To facilitate accurate positioning on replacement, registration information in three areas was recorded along with the data. Registration information is read from two of the areas alternately and compared. The table on which the plate is mounted is rotated in a sense determined by the difference until identical signals are obtained from both areas, then the table is moved rectilinearly in X and Y directions until the signals from the two areas reach standard (equal) values.
Patent GB-1327692-A (GB)
Title: Slope limiter apparatus
IPC: G01C11/06
Filed: 1971-08-27
Abstract: 1327692 Reducing signal slope HOBROUGH Ltd 27 Aug 1971 [27 Aug 1970] 40327/71 Heading H3W The slope between two values of a signal is effectively reduced by adding to the first value of the signal a fraction of the difference between the values and subtracting the fraction from the second value. In Fig. 1, if the difference between the signal stored in the 10-bit store 13 and the new value at 10 is larger than the reference levels 22, 23 an OR gate 24 opens an AND gate 19 which passes a binary value equal to half the difference to an adder 27 where it is combined with the first value stored at 28. It is also fed to a subtractor 26 where it is combined with the new value before entering the store. Accordingly the incremental step (depicted in analogue form as V in Fig. 1A) is connected to two equal steps B1, B2. If a plurality of stores are used, the duration of the intermediate step may be extended and if a number of circuits are connected in sequence or if the signal is recirculated, the single step may be converted to a plurality of smaller steps (Figs. 4 and 4A, not shown). A fraction other than half may be used (Figs. 3 and Fig. 4, (477) not shown). In addition, the fraction may be derived before the store. The invention may be applied to a stereo photograph analysis system (Specification 1,231,998) to reduce the signal slope caused by terrain discontinuities, noise or blank spots.
Patent GB-1436379-A (GB)
Title: Decoder for use in 4-2-4-matrix playback system
IPC: H04S3/02
Filed: 1973-08-28
Abstract: 1436379 Four-channel matrix decoders SANSUI ELECTRIC CO Ltd 28 Aug 1973 [9 Sept 1972] 40517/73 Heading H4R In a decoder for two-channel signals L, R of, e.g. a 4-2-4 matrix audio system, the channels are split into at least two frequency bands and for each band a control unit 13 detects the phase difference between the channels and controls the coefficients of a matrix 14 combining the L and R signals in various amplitude and phase relationships to produce four outputs FL, FR, BL, BR subsequently combined 15-18 with the corresponding outputs of the other frequency bands. Separation of opposed corner, front/rear and left/right signals is thereby improved, especially noticeable for opposed signals of equal level but different frequency. Dividing frequencies are 800 Hz and/or 5 kHz. The decoder is applicable to variable matrixes outlined in Figs. 2 to 5 not shown and described in detail in Specifications 1,402,320 and 1,411,408.
Patent GB-901634-A (GB)
Title: Improvements relating to nuclear reactors
Inventor: MORLAND JOHN GEORGE
IPC: G21C5/02
Filed: 1958-12-17
Abstract: 901,634. Reactors. A.E.I.-J. THOMPSON NUCLEAR ENERGY CO. Ltd. March 15, 1960 [Dec. 17, 1958], No. 40781/58. Class 39 (4). In a gas-cooled graphite moderated nuclear reactor, the coolant passage 2 is extended, by tube 4, through the support plate 6. Lateral relative movement between the moderator 1 and 6 is permitted by the ball bearings 7. Leakage of the coolant gas through the plate 6 and bearings 7, into the core, is prevented by the stainless steel hose 12 welded at 11, 13.